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/*************************************************************************** |
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* * |
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* libgig - C++ cross-platform Gigasampler format file access library * |
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* * |
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* Copyright (C) 2003-2007 by Christian Schoenebeck * |
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* <cuse@users.sourceforge.net> * |
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* * |
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* This library is free software; you can redistribute it and/or modify * |
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* it under the terms of the GNU General Public License as published by * |
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* the Free Software Foundation; either version 2 of the License, or * |
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* (at your option) any later version. * |
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* * |
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* This library is distributed in the hope that it will be useful, * |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of * |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
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* GNU General Public License for more details. * |
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* * |
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* You should have received a copy of the GNU General Public License * |
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* along with this library; if not, write to the Free Software * |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, * |
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* MA 02111-1307 USA * |
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***************************************************************************/ |
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|
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#include "gig.h" |
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|
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#include "helper.h" |
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|
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#include <math.h> |
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#include <iostream> |
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|
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/// Initial size of the sample buffer which is used for decompression of |
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/// compressed sample wave streams - this value should always be bigger than |
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/// the biggest sample piece expected to be read by the sampler engine, |
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/// otherwise the buffer size will be raised at runtime and thus the buffer |
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/// reallocated which is time consuming and unefficient. |
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#define INITIAL_SAMPLE_BUFFER_SIZE 512000 // 512 kB |
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|
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/** (so far) every exponential paramater in the gig format has a basis of 1.000000008813822 */ |
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#define GIG_EXP_DECODE(x) (pow(1.000000008813822, x)) |
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#define GIG_EXP_ENCODE(x) (log(x) / log(1.000000008813822)) |
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#define GIG_PITCH_TRACK_EXTRACT(x) (!(x & 0x01)) |
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#define GIG_PITCH_TRACK_ENCODE(x) ((x) ? 0x00 : 0x01) |
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#define GIG_VCF_RESONANCE_CTRL_EXTRACT(x) ((x >> 4) & 0x03) |
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#define GIG_VCF_RESONANCE_CTRL_ENCODE(x) ((x & 0x03) << 4) |
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#define GIG_EG_CTR_ATTACK_INFLUENCE_EXTRACT(x) ((x >> 1) & 0x03) |
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#define GIG_EG_CTR_DECAY_INFLUENCE_EXTRACT(x) ((x >> 3) & 0x03) |
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#define GIG_EG_CTR_RELEASE_INFLUENCE_EXTRACT(x) ((x >> 5) & 0x03) |
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#define GIG_EG_CTR_ATTACK_INFLUENCE_ENCODE(x) ((x & 0x03) << 1) |
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#define GIG_EG_CTR_DECAY_INFLUENCE_ENCODE(x) ((x & 0x03) << 3) |
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#define GIG_EG_CTR_RELEASE_INFLUENCE_ENCODE(x) ((x & 0x03) << 5) |
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|
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namespace gig { |
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|
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// *************** progress_t *************** |
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// * |
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|
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progress_t::progress_t() { |
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callback = NULL; |
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custom = NULL; |
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__range_min = 0.0f; |
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__range_max = 1.0f; |
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} |
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|
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// private helper function to convert progress of a subprocess into the global progress |
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static void __notify_progress(progress_t* pProgress, float subprogress) { |
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if (pProgress && pProgress->callback) { |
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const float totalrange = pProgress->__range_max - pProgress->__range_min; |
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const float totalprogress = pProgress->__range_min + subprogress * totalrange; |
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pProgress->factor = totalprogress; |
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pProgress->callback(pProgress); // now actually notify about the progress |
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} |
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} |
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|
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// private helper function to divide a progress into subprogresses |
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static void __divide_progress(progress_t* pParentProgress, progress_t* pSubProgress, float totalTasks, float currentTask) { |
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if (pParentProgress && pParentProgress->callback) { |
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const float totalrange = pParentProgress->__range_max - pParentProgress->__range_min; |
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pSubProgress->callback = pParentProgress->callback; |
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pSubProgress->custom = pParentProgress->custom; |
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pSubProgress->__range_min = pParentProgress->__range_min + totalrange * currentTask / totalTasks; |
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pSubProgress->__range_max = pSubProgress->__range_min + totalrange / totalTasks; |
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} |
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} |
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|
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|
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// *************** Internal functions for sample decompression *************** |
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// * |
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|
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namespace { |
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|
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inline int get12lo(const unsigned char* pSrc) |
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{ |
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const int x = pSrc[0] | (pSrc[1] & 0x0f) << 8; |
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return x & 0x800 ? x - 0x1000 : x; |
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} |
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|
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inline int get12hi(const unsigned char* pSrc) |
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{ |
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const int x = pSrc[1] >> 4 | pSrc[2] << 4; |
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return x & 0x800 ? x - 0x1000 : x; |
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} |
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|
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inline int16_t get16(const unsigned char* pSrc) |
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{ |
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return int16_t(pSrc[0] | pSrc[1] << 8); |
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} |
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|
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inline int get24(const unsigned char* pSrc) |
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{ |
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const int x = pSrc[0] | pSrc[1] << 8 | pSrc[2] << 16; |
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return x & 0x800000 ? x - 0x1000000 : x; |
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} |
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|
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inline void store24(unsigned char* pDst, int x) |
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{ |
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pDst[0] = x; |
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pDst[1] = x >> 8; |
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pDst[2] = x >> 16; |
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} |
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|
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void Decompress16(int compressionmode, const unsigned char* params, |
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int srcStep, int dstStep, |
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const unsigned char* pSrc, int16_t* pDst, |
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unsigned long currentframeoffset, |
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unsigned long copysamples) |
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{ |
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switch (compressionmode) { |
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case 0: // 16 bit uncompressed |
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pSrc += currentframeoffset * srcStep; |
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while (copysamples) { |
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*pDst = get16(pSrc); |
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pDst += dstStep; |
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pSrc += srcStep; |
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copysamples--; |
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} |
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break; |
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|
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case 1: // 16 bit compressed to 8 bit |
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int y = get16(params); |
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int dy = get16(params + 2); |
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while (currentframeoffset) { |
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dy -= int8_t(*pSrc); |
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y -= dy; |
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pSrc += srcStep; |
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currentframeoffset--; |
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} |
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while (copysamples) { |
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dy -= int8_t(*pSrc); |
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y -= dy; |
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*pDst = y; |
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pDst += dstStep; |
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pSrc += srcStep; |
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copysamples--; |
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} |
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break; |
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} |
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} |
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|
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void Decompress24(int compressionmode, const unsigned char* params, |
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int dstStep, const unsigned char* pSrc, uint8_t* pDst, |
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unsigned long currentframeoffset, |
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unsigned long copysamples, int truncatedBits) |
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{ |
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int y, dy, ddy, dddy; |
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|
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#define GET_PARAMS(params) \ |
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y = get24(params); \ |
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dy = y - get24((params) + 3); \ |
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ddy = get24((params) + 6); \ |
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dddy = get24((params) + 9) |
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|
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#define SKIP_ONE(x) \ |
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dddy -= (x); \ |
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ddy -= dddy; \ |
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dy = -dy - ddy; \ |
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y += dy |
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|
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#define COPY_ONE(x) \ |
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SKIP_ONE(x); \ |
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store24(pDst, y << truncatedBits); \ |
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pDst += dstStep |
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|
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switch (compressionmode) { |
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case 2: // 24 bit uncompressed |
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pSrc += currentframeoffset * 3; |
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while (copysamples) { |
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store24(pDst, get24(pSrc) << truncatedBits); |
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pDst += dstStep; |
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pSrc += 3; |
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copysamples--; |
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} |
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break; |
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|
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case 3: // 24 bit compressed to 16 bit |
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GET_PARAMS(params); |
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while (currentframeoffset) { |
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SKIP_ONE(get16(pSrc)); |
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pSrc += 2; |
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currentframeoffset--; |
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} |
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while (copysamples) { |
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COPY_ONE(get16(pSrc)); |
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pSrc += 2; |
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copysamples--; |
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} |
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break; |
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|
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case 4: // 24 bit compressed to 12 bit |
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GET_PARAMS(params); |
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while (currentframeoffset > 1) { |
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SKIP_ONE(get12lo(pSrc)); |
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SKIP_ONE(get12hi(pSrc)); |
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pSrc += 3; |
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currentframeoffset -= 2; |
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} |
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if (currentframeoffset) { |
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SKIP_ONE(get12lo(pSrc)); |
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currentframeoffset--; |
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if (copysamples) { |
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COPY_ONE(get12hi(pSrc)); |
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pSrc += 3; |
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copysamples--; |
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} |
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} |
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while (copysamples > 1) { |
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COPY_ONE(get12lo(pSrc)); |
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COPY_ONE(get12hi(pSrc)); |
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pSrc += 3; |
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copysamples -= 2; |
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} |
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if (copysamples) { |
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COPY_ONE(get12lo(pSrc)); |
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} |
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break; |
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|
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case 5: // 24 bit compressed to 8 bit |
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GET_PARAMS(params); |
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while (currentframeoffset) { |
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SKIP_ONE(int8_t(*pSrc++)); |
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currentframeoffset--; |
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} |
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while (copysamples) { |
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COPY_ONE(int8_t(*pSrc++)); |
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copysamples--; |
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} |
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break; |
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} |
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} |
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|
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const int bytesPerFrame[] = { 4096, 2052, 768, 524, 396, 268 }; |
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const int bytesPerFrameNoHdr[] = { 4096, 2048, 768, 512, 384, 256 }; |
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const int headerSize[] = { 0, 4, 0, 12, 12, 12 }; |
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const int bitsPerSample[] = { 16, 8, 24, 16, 12, 8 }; |
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} |
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|
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|
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|
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// *************** Other Internal functions *************** |
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// * |
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|
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static split_type_t __resolveSplitType(dimension_t dimension) { |
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return ( |
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dimension == dimension_layer || |
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dimension == dimension_samplechannel || |
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dimension == dimension_releasetrigger || |
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dimension == dimension_keyboard || |
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dimension == dimension_roundrobin || |
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dimension == dimension_random || |
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dimension == dimension_smartmidi || |
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dimension == dimension_roundrobinkeyboard |
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) ? split_type_bit : split_type_normal; |
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} |
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|
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static int __resolveZoneSize(dimension_def_t& dimension_definition) { |
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return (dimension_definition.split_type == split_type_normal) |
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? int(128.0 / dimension_definition.zones) : 0; |
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} |
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|
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|
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|
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// *************** Sample *************** |
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// * |
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|
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unsigned int Sample::Instances = 0; |
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buffer_t Sample::InternalDecompressionBuffer; |
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|
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/** @brief Constructor. |
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* |
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* Load an existing sample or create a new one. A 'wave' list chunk must |
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* be given to this constructor. In case the given 'wave' list chunk |
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* contains a 'fmt', 'data' (and optionally a '3gix', 'smpl') chunk, the |
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* format and sample data will be loaded from there, otherwise default |
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* values will be used and those chunks will be created when |
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* File::Save() will be called later on. |
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* |
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* @param pFile - pointer to gig::File where this sample is |
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* located (or will be located) |
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* @param waveList - pointer to 'wave' list chunk which is (or |
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* will be) associated with this sample |
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* @param WavePoolOffset - offset of this sample data from wave pool |
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* ('wvpl') list chunk |
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* @param fileNo - number of an extension file where this sample |
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* is located, 0 otherwise |
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*/ |
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Sample::Sample(File* pFile, RIFF::List* waveList, unsigned long WavePoolOffset, unsigned long fileNo) : DLS::Sample((DLS::File*) pFile, waveList, WavePoolOffset) { |
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static const DLS::Info::FixedStringLength fixedStringLengths[] = { |
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{ CHUNK_ID_INAM, 64 }, |
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{ 0, 0 } |
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}; |
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pInfo->FixedStringLengths = fixedStringLengths; |
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Instances++; |
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FileNo = fileNo; |
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|
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pCk3gix = waveList->GetSubChunk(CHUNK_ID_3GIX); |
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if (pCk3gix) { |
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uint16_t iSampleGroup = pCk3gix->ReadInt16(); |
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pGroup = pFile->GetGroup(iSampleGroup); |
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} else { // '3gix' chunk missing |
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// by default assigned to that mandatory "Default Group" |
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pGroup = pFile->GetGroup(0); |
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} |
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|
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pCkSmpl = waveList->GetSubChunk(CHUNK_ID_SMPL); |
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if (pCkSmpl) { |
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Manufacturer = pCkSmpl->ReadInt32(); |
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Product = pCkSmpl->ReadInt32(); |
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SamplePeriod = pCkSmpl->ReadInt32(); |
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MIDIUnityNote = pCkSmpl->ReadInt32(); |
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FineTune = pCkSmpl->ReadInt32(); |
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pCkSmpl->Read(&SMPTEFormat, 1, 4); |
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SMPTEOffset = pCkSmpl->ReadInt32(); |
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Loops = pCkSmpl->ReadInt32(); |
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pCkSmpl->ReadInt32(); // manufByt |
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LoopID = pCkSmpl->ReadInt32(); |
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pCkSmpl->Read(&LoopType, 1, 4); |
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LoopStart = pCkSmpl->ReadInt32(); |
337 |
LoopEnd = pCkSmpl->ReadInt32(); |
338 |
LoopFraction = pCkSmpl->ReadInt32(); |
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LoopPlayCount = pCkSmpl->ReadInt32(); |
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} else { // 'smpl' chunk missing |
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// use default values |
342 |
Manufacturer = 0; |
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Product = 0; |
344 |
SamplePeriod = uint32_t(1000000000.0 / SamplesPerSecond + 0.5); |
345 |
MIDIUnityNote = 64; |
346 |
FineTune = 0; |
347 |
SMPTEOffset = 0; |
348 |
Loops = 0; |
349 |
LoopID = 0; |
350 |
LoopStart = 0; |
351 |
LoopEnd = 0; |
352 |
LoopFraction = 0; |
353 |
LoopPlayCount = 0; |
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} |
355 |
|
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FrameTable = NULL; |
357 |
SamplePos = 0; |
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RAMCache.Size = 0; |
359 |
RAMCache.pStart = NULL; |
360 |
RAMCache.NullExtensionSize = 0; |
361 |
|
362 |
if (BitDepth > 24) throw gig::Exception("Only samples up to 24 bit supported"); |
363 |
|
364 |
RIFF::Chunk* ewav = waveList->GetSubChunk(CHUNK_ID_EWAV); |
365 |
Compressed = ewav; |
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Dithered = false; |
367 |
TruncatedBits = 0; |
368 |
if (Compressed) { |
369 |
uint32_t version = ewav->ReadInt32(); |
370 |
if (version == 3 && BitDepth == 24) { |
371 |
Dithered = ewav->ReadInt32(); |
372 |
ewav->SetPos(Channels == 2 ? 84 : 64); |
373 |
TruncatedBits = ewav->ReadInt32(); |
374 |
} |
375 |
ScanCompressedSample(); |
376 |
} |
377 |
|
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// we use a buffer for decompression and for truncating 24 bit samples to 16 bit |
379 |
if ((Compressed || BitDepth == 24) && !InternalDecompressionBuffer.Size) { |
380 |
InternalDecompressionBuffer.pStart = new unsigned char[INITIAL_SAMPLE_BUFFER_SIZE]; |
381 |
InternalDecompressionBuffer.Size = INITIAL_SAMPLE_BUFFER_SIZE; |
382 |
} |
383 |
FrameOffset = 0; // just for streaming compressed samples |
384 |
|
385 |
LoopSize = LoopEnd - LoopStart + 1; |
386 |
} |
387 |
|
388 |
/** |
389 |
* Apply sample and its settings to the respective RIFF chunks. You have |
390 |
* to call File::Save() to make changes persistent. |
391 |
* |
392 |
* Usually there is absolutely no need to call this method explicitly. |
393 |
* It will be called automatically when File::Save() was called. |
394 |
* |
395 |
* @throws DLS::Exception if FormatTag != DLS_WAVE_FORMAT_PCM or no sample data |
396 |
* was provided yet |
397 |
* @throws gig::Exception if there is any invalid sample setting |
398 |
*/ |
399 |
void Sample::UpdateChunks() { |
400 |
// first update base class's chunks |
401 |
DLS::Sample::UpdateChunks(); |
402 |
|
403 |
// make sure 'smpl' chunk exists |
404 |
pCkSmpl = pWaveList->GetSubChunk(CHUNK_ID_SMPL); |
405 |
if (!pCkSmpl) pCkSmpl = pWaveList->AddSubChunk(CHUNK_ID_SMPL, 60); |
406 |
// update 'smpl' chunk |
407 |
uint8_t* pData = (uint8_t*) pCkSmpl->LoadChunkData(); |
408 |
SamplePeriod = uint32_t(1000000000.0 / SamplesPerSecond + 0.5); |
409 |
store32(&pData[0], Manufacturer); |
410 |
store32(&pData[4], Product); |
411 |
store32(&pData[8], SamplePeriod); |
412 |
store32(&pData[12], MIDIUnityNote); |
413 |
store32(&pData[16], FineTune); |
414 |
store32(&pData[20], SMPTEFormat); |
415 |
store32(&pData[24], SMPTEOffset); |
416 |
store32(&pData[28], Loops); |
417 |
|
418 |
// we skip 'manufByt' for now (4 bytes) |
419 |
|
420 |
store32(&pData[36], LoopID); |
421 |
store32(&pData[40], LoopType); |
422 |
store32(&pData[44], LoopStart); |
423 |
store32(&pData[48], LoopEnd); |
424 |
store32(&pData[52], LoopFraction); |
425 |
store32(&pData[56], LoopPlayCount); |
426 |
|
427 |
// make sure '3gix' chunk exists |
428 |
pCk3gix = pWaveList->GetSubChunk(CHUNK_ID_3GIX); |
429 |
if (!pCk3gix) pCk3gix = pWaveList->AddSubChunk(CHUNK_ID_3GIX, 4); |
430 |
// determine appropriate sample group index (to be stored in chunk) |
431 |
uint16_t iSampleGroup = 0; // 0 refers to default sample group |
432 |
File* pFile = static_cast<File*>(pParent); |
433 |
if (pFile->pGroups) { |
434 |
std::list<Group*>::iterator iter = pFile->pGroups->begin(); |
435 |
std::list<Group*>::iterator end = pFile->pGroups->end(); |
436 |
for (int i = 0; iter != end; i++, iter++) { |
437 |
if (*iter == pGroup) { |
438 |
iSampleGroup = i; |
439 |
break; // found |
440 |
} |
441 |
} |
442 |
} |
443 |
// update '3gix' chunk |
444 |
pData = (uint8_t*) pCk3gix->LoadChunkData(); |
445 |
store16(&pData[0], iSampleGroup); |
446 |
} |
447 |
|
448 |
/// Scans compressed samples for mandatory informations (e.g. actual number of total sample points). |
449 |
void Sample::ScanCompressedSample() { |
450 |
//TODO: we have to add some more scans here (e.g. determine compression rate) |
451 |
this->SamplesTotal = 0; |
452 |
std::list<unsigned long> frameOffsets; |
453 |
|
454 |
SamplesPerFrame = BitDepth == 24 ? 256 : 2048; |
455 |
WorstCaseFrameSize = SamplesPerFrame * FrameSize + Channels; // +Channels for compression flag |
456 |
|
457 |
// Scanning |
458 |
pCkData->SetPos(0); |
459 |
if (Channels == 2) { // Stereo |
460 |
for (int i = 0 ; ; i++) { |
461 |
// for 24 bit samples every 8:th frame offset is |
462 |
// stored, to save some memory |
463 |
if (BitDepth != 24 || (i & 7) == 0) frameOffsets.push_back(pCkData->GetPos()); |
464 |
|
465 |
const int mode_l = pCkData->ReadUint8(); |
466 |
const int mode_r = pCkData->ReadUint8(); |
467 |
if (mode_l > 5 || mode_r > 5) throw gig::Exception("Unknown compression mode"); |
468 |
const unsigned long frameSize = bytesPerFrame[mode_l] + bytesPerFrame[mode_r]; |
469 |
|
470 |
if (pCkData->RemainingBytes() <= frameSize) { |
471 |
SamplesInLastFrame = |
472 |
((pCkData->RemainingBytes() - headerSize[mode_l] - headerSize[mode_r]) << 3) / |
473 |
(bitsPerSample[mode_l] + bitsPerSample[mode_r]); |
474 |
SamplesTotal += SamplesInLastFrame; |
475 |
break; |
476 |
} |
477 |
SamplesTotal += SamplesPerFrame; |
478 |
pCkData->SetPos(frameSize, RIFF::stream_curpos); |
479 |
} |
480 |
} |
481 |
else { // Mono |
482 |
for (int i = 0 ; ; i++) { |
483 |
if (BitDepth != 24 || (i & 7) == 0) frameOffsets.push_back(pCkData->GetPos()); |
484 |
|
485 |
const int mode = pCkData->ReadUint8(); |
486 |
if (mode > 5) throw gig::Exception("Unknown compression mode"); |
487 |
const unsigned long frameSize = bytesPerFrame[mode]; |
488 |
|
489 |
if (pCkData->RemainingBytes() <= frameSize) { |
490 |
SamplesInLastFrame = |
491 |
((pCkData->RemainingBytes() - headerSize[mode]) << 3) / bitsPerSample[mode]; |
492 |
SamplesTotal += SamplesInLastFrame; |
493 |
break; |
494 |
} |
495 |
SamplesTotal += SamplesPerFrame; |
496 |
pCkData->SetPos(frameSize, RIFF::stream_curpos); |
497 |
} |
498 |
} |
499 |
pCkData->SetPos(0); |
500 |
|
501 |
// Build the frames table (which is used for fast resolving of a frame's chunk offset) |
502 |
if (FrameTable) delete[] FrameTable; |
503 |
FrameTable = new unsigned long[frameOffsets.size()]; |
504 |
std::list<unsigned long>::iterator end = frameOffsets.end(); |
505 |
std::list<unsigned long>::iterator iter = frameOffsets.begin(); |
506 |
for (int i = 0; iter != end; i++, iter++) { |
507 |
FrameTable[i] = *iter; |
508 |
} |
509 |
} |
510 |
|
511 |
/** |
512 |
* Loads (and uncompresses if needed) the whole sample wave into RAM. Use |
513 |
* ReleaseSampleData() to free the memory if you don't need the cached |
514 |
* sample data anymore. |
515 |
* |
516 |
* @returns buffer_t structure with start address and size of the buffer |
517 |
* in bytes |
518 |
* @see ReleaseSampleData(), Read(), SetPos() |
519 |
*/ |
520 |
buffer_t Sample::LoadSampleData() { |
521 |
return LoadSampleDataWithNullSamplesExtension(this->SamplesTotal, 0); // 0 amount of NullSamples |
522 |
} |
523 |
|
524 |
/** |
525 |
* Reads (uncompresses if needed) and caches the first \a SampleCount |
526 |
* numbers of SamplePoints in RAM. Use ReleaseSampleData() to free the |
527 |
* memory space if you don't need the cached samples anymore. There is no |
528 |
* guarantee that exactly \a SampleCount samples will be cached; this is |
529 |
* not an error. The size will be eventually truncated e.g. to the |
530 |
* beginning of a frame of a compressed sample. This is done for |
531 |
* efficiency reasons while streaming the wave by your sampler engine |
532 |
* later. Read the <i>Size</i> member of the <i>buffer_t</i> structure |
533 |
* that will be returned to determine the actual cached samples, but note |
534 |
* that the size is given in bytes! You get the number of actually cached |
535 |
* samples by dividing it by the frame size of the sample: |
536 |
* @code |
537 |
* buffer_t buf = pSample->LoadSampleData(acquired_samples); |
538 |
* long cachedsamples = buf.Size / pSample->FrameSize; |
539 |
* @endcode |
540 |
* |
541 |
* @param SampleCount - number of sample points to load into RAM |
542 |
* @returns buffer_t structure with start address and size of |
543 |
* the cached sample data in bytes |
544 |
* @see ReleaseSampleData(), Read(), SetPos() |
545 |
*/ |
546 |
buffer_t Sample::LoadSampleData(unsigned long SampleCount) { |
547 |
return LoadSampleDataWithNullSamplesExtension(SampleCount, 0); // 0 amount of NullSamples |
548 |
} |
549 |
|
550 |
/** |
551 |
* Loads (and uncompresses if needed) the whole sample wave into RAM. Use |
552 |
* ReleaseSampleData() to free the memory if you don't need the cached |
553 |
* sample data anymore. |
554 |
* The method will add \a NullSamplesCount silence samples past the |
555 |
* official buffer end (this won't affect the 'Size' member of the |
556 |
* buffer_t structure, that means 'Size' always reflects the size of the |
557 |
* actual sample data, the buffer might be bigger though). Silence |
558 |
* samples past the official buffer are needed for differential |
559 |
* algorithms that always have to take subsequent samples into account |
560 |
* (resampling/interpolation would be an important example) and avoids |
561 |
* memory access faults in such cases. |
562 |
* |
563 |
* @param NullSamplesCount - number of silence samples the buffer should |
564 |
* be extended past it's data end |
565 |
* @returns buffer_t structure with start address and |
566 |
* size of the buffer in bytes |
567 |
* @see ReleaseSampleData(), Read(), SetPos() |
568 |
*/ |
569 |
buffer_t Sample::LoadSampleDataWithNullSamplesExtension(uint NullSamplesCount) { |
570 |
return LoadSampleDataWithNullSamplesExtension(this->SamplesTotal, NullSamplesCount); |
571 |
} |
572 |
|
573 |
/** |
574 |
* Reads (uncompresses if needed) and caches the first \a SampleCount |
575 |
* numbers of SamplePoints in RAM. Use ReleaseSampleData() to free the |
576 |
* memory space if you don't need the cached samples anymore. There is no |
577 |
* guarantee that exactly \a SampleCount samples will be cached; this is |
578 |
* not an error. The size will be eventually truncated e.g. to the |
579 |
* beginning of a frame of a compressed sample. This is done for |
580 |
* efficiency reasons while streaming the wave by your sampler engine |
581 |
* later. Read the <i>Size</i> member of the <i>buffer_t</i> structure |
582 |
* that will be returned to determine the actual cached samples, but note |
583 |
* that the size is given in bytes! You get the number of actually cached |
584 |
* samples by dividing it by the frame size of the sample: |
585 |
* @code |
586 |
* buffer_t buf = pSample->LoadSampleDataWithNullSamplesExtension(acquired_samples, null_samples); |
587 |
* long cachedsamples = buf.Size / pSample->FrameSize; |
588 |
* @endcode |
589 |
* The method will add \a NullSamplesCount silence samples past the |
590 |
* official buffer end (this won't affect the 'Size' member of the |
591 |
* buffer_t structure, that means 'Size' always reflects the size of the |
592 |
* actual sample data, the buffer might be bigger though). Silence |
593 |
* samples past the official buffer are needed for differential |
594 |
* algorithms that always have to take subsequent samples into account |
595 |
* (resampling/interpolation would be an important example) and avoids |
596 |
* memory access faults in such cases. |
597 |
* |
598 |
* @param SampleCount - number of sample points to load into RAM |
599 |
* @param NullSamplesCount - number of silence samples the buffer should |
600 |
* be extended past it's data end |
601 |
* @returns buffer_t structure with start address and |
602 |
* size of the cached sample data in bytes |
603 |
* @see ReleaseSampleData(), Read(), SetPos() |
604 |
*/ |
605 |
buffer_t Sample::LoadSampleDataWithNullSamplesExtension(unsigned long SampleCount, uint NullSamplesCount) { |
606 |
if (SampleCount > this->SamplesTotal) SampleCount = this->SamplesTotal; |
607 |
if (RAMCache.pStart) delete[] (int8_t*) RAMCache.pStart; |
608 |
unsigned long allocationsize = (SampleCount + NullSamplesCount) * this->FrameSize; |
609 |
RAMCache.pStart = new int8_t[allocationsize]; |
610 |
RAMCache.Size = Read(RAMCache.pStart, SampleCount) * this->FrameSize; |
611 |
RAMCache.NullExtensionSize = allocationsize - RAMCache.Size; |
612 |
// fill the remaining buffer space with silence samples |
613 |
memset((int8_t*)RAMCache.pStart + RAMCache.Size, 0, RAMCache.NullExtensionSize); |
614 |
return GetCache(); |
615 |
} |
616 |
|
617 |
/** |
618 |
* Returns current cached sample points. A buffer_t structure will be |
619 |
* returned which contains address pointer to the begin of the cache and |
620 |
* the size of the cached sample data in bytes. Use |
621 |
* <i>LoadSampleData()</i> to cache a specific amount of sample points in |
622 |
* RAM. |
623 |
* |
624 |
* @returns buffer_t structure with current cached sample points |
625 |
* @see LoadSampleData(); |
626 |
*/ |
627 |
buffer_t Sample::GetCache() { |
628 |
// return a copy of the buffer_t structure |
629 |
buffer_t result; |
630 |
result.Size = this->RAMCache.Size; |
631 |
result.pStart = this->RAMCache.pStart; |
632 |
result.NullExtensionSize = this->RAMCache.NullExtensionSize; |
633 |
return result; |
634 |
} |
635 |
|
636 |
/** |
637 |
* Frees the cached sample from RAM if loaded with |
638 |
* <i>LoadSampleData()</i> previously. |
639 |
* |
640 |
* @see LoadSampleData(); |
641 |
*/ |
642 |
void Sample::ReleaseSampleData() { |
643 |
if (RAMCache.pStart) delete[] (int8_t*) RAMCache.pStart; |
644 |
RAMCache.pStart = NULL; |
645 |
RAMCache.Size = 0; |
646 |
} |
647 |
|
648 |
/** @brief Resize sample. |
649 |
* |
650 |
* Resizes the sample's wave form data, that is the actual size of |
651 |
* sample wave data possible to be written for this sample. This call |
652 |
* will return immediately and just schedule the resize operation. You |
653 |
* should call File::Save() to actually perform the resize operation(s) |
654 |
* "physically" to the file. As this can take a while on large files, it |
655 |
* is recommended to call Resize() first on all samples which have to be |
656 |
* resized and finally to call File::Save() to perform all those resize |
657 |
* operations in one rush. |
658 |
* |
659 |
* The actual size (in bytes) is dependant to the current FrameSize |
660 |
* value. You may want to set FrameSize before calling Resize(). |
661 |
* |
662 |
* <b>Caution:</b> You cannot directly write (i.e. with Write()) to |
663 |
* enlarged samples before calling File::Save() as this might exceed the |
664 |
* current sample's boundary! |
665 |
* |
666 |
* Also note: only DLS_WAVE_FORMAT_PCM is currently supported, that is |
667 |
* FormatTag must be DLS_WAVE_FORMAT_PCM. Trying to resize samples with |
668 |
* other formats will fail! |
669 |
* |
670 |
* @param iNewSize - new sample wave data size in sample points (must be |
671 |
* greater than zero) |
672 |
* @throws DLS::Excecption if FormatTag != DLS_WAVE_FORMAT_PCM |
673 |
* or if \a iNewSize is less than 1 |
674 |
* @throws gig::Exception if existing sample is compressed |
675 |
* @see DLS::Sample::GetSize(), DLS::Sample::FrameSize, |
676 |
* DLS::Sample::FormatTag, File::Save() |
677 |
*/ |
678 |
void Sample::Resize(int iNewSize) { |
679 |
if (Compressed) throw gig::Exception("There is no support for modifying compressed samples (yet)"); |
680 |
DLS::Sample::Resize(iNewSize); |
681 |
} |
682 |
|
683 |
/** |
684 |
* Sets the position within the sample (in sample points, not in |
685 |
* bytes). Use this method and <i>Read()</i> if you don't want to load |
686 |
* the sample into RAM, thus for disk streaming. |
687 |
* |
688 |
* Although the original Gigasampler engine doesn't allow positioning |
689 |
* within compressed samples, I decided to implement it. Even though |
690 |
* the Gigasampler format doesn't allow to define loops for compressed |
691 |
* samples at the moment, positioning within compressed samples might be |
692 |
* interesting for some sampler engines though. The only drawback about |
693 |
* my decision is that it takes longer to load compressed gig Files on |
694 |
* startup, because it's neccessary to scan the samples for some |
695 |
* mandatory informations. But I think as it doesn't affect the runtime |
696 |
* efficiency, nobody will have a problem with that. |
697 |
* |
698 |
* @param SampleCount number of sample points to jump |
699 |
* @param Whence optional: to which relation \a SampleCount refers |
700 |
* to, if omited <i>RIFF::stream_start</i> is assumed |
701 |
* @returns the new sample position |
702 |
* @see Read() |
703 |
*/ |
704 |
unsigned long Sample::SetPos(unsigned long SampleCount, RIFF::stream_whence_t Whence) { |
705 |
if (Compressed) { |
706 |
switch (Whence) { |
707 |
case RIFF::stream_curpos: |
708 |
this->SamplePos += SampleCount; |
709 |
break; |
710 |
case RIFF::stream_end: |
711 |
this->SamplePos = this->SamplesTotal - 1 - SampleCount; |
712 |
break; |
713 |
case RIFF::stream_backward: |
714 |
this->SamplePos -= SampleCount; |
715 |
break; |
716 |
case RIFF::stream_start: default: |
717 |
this->SamplePos = SampleCount; |
718 |
break; |
719 |
} |
720 |
if (this->SamplePos > this->SamplesTotal) this->SamplePos = this->SamplesTotal; |
721 |
|
722 |
unsigned long frame = this->SamplePos / 2048; // to which frame to jump |
723 |
this->FrameOffset = this->SamplePos % 2048; // offset (in sample points) within that frame |
724 |
pCkData->SetPos(FrameTable[frame]); // set chunk pointer to the start of sought frame |
725 |
return this->SamplePos; |
726 |
} |
727 |
else { // not compressed |
728 |
unsigned long orderedBytes = SampleCount * this->FrameSize; |
729 |
unsigned long result = pCkData->SetPos(orderedBytes, Whence); |
730 |
return (result == orderedBytes) ? SampleCount |
731 |
: result / this->FrameSize; |
732 |
} |
733 |
} |
734 |
|
735 |
/** |
736 |
* Returns the current position in the sample (in sample points). |
737 |
*/ |
738 |
unsigned long Sample::GetPos() { |
739 |
if (Compressed) return SamplePos; |
740 |
else return pCkData->GetPos() / FrameSize; |
741 |
} |
742 |
|
743 |
/** |
744 |
* Reads \a SampleCount number of sample points from the position stored |
745 |
* in \a pPlaybackState into the buffer pointed by \a pBuffer and moves |
746 |
* the position within the sample respectively, this method honors the |
747 |
* looping informations of the sample (if any). The sample wave stream |
748 |
* will be decompressed on the fly if using a compressed sample. Use this |
749 |
* method if you don't want to load the sample into RAM, thus for disk |
750 |
* streaming. All this methods needs to know to proceed with streaming |
751 |
* for the next time you call this method is stored in \a pPlaybackState. |
752 |
* You have to allocate and initialize the playback_state_t structure by |
753 |
* yourself before you use it to stream a sample: |
754 |
* @code |
755 |
* gig::playback_state_t playbackstate; |
756 |
* playbackstate.position = 0; |
757 |
* playbackstate.reverse = false; |
758 |
* playbackstate.loop_cycles_left = pSample->LoopPlayCount; |
759 |
* @endcode |
760 |
* You don't have to take care of things like if there is actually a loop |
761 |
* defined or if the current read position is located within a loop area. |
762 |
* The method already handles such cases by itself. |
763 |
* |
764 |
* <b>Caution:</b> If you are using more than one streaming thread, you |
765 |
* have to use an external decompression buffer for <b>EACH</b> |
766 |
* streaming thread to avoid race conditions and crashes! |
767 |
* |
768 |
* @param pBuffer destination buffer |
769 |
* @param SampleCount number of sample points to read |
770 |
* @param pPlaybackState will be used to store and reload the playback |
771 |
* state for the next ReadAndLoop() call |
772 |
* @param pDimRgn dimension region with looping information |
773 |
* @param pExternalDecompressionBuffer (optional) external buffer to use for decompression |
774 |
* @returns number of successfully read sample points |
775 |
* @see CreateDecompressionBuffer() |
776 |
*/ |
777 |
unsigned long Sample::ReadAndLoop(void* pBuffer, unsigned long SampleCount, playback_state_t* pPlaybackState, |
778 |
DimensionRegion* pDimRgn, buffer_t* pExternalDecompressionBuffer) { |
779 |
unsigned long samplestoread = SampleCount, totalreadsamples = 0, readsamples, samplestoloopend; |
780 |
uint8_t* pDst = (uint8_t*) pBuffer; |
781 |
|
782 |
SetPos(pPlaybackState->position); // recover position from the last time |
783 |
|
784 |
if (pDimRgn->SampleLoops) { // honor looping if there are loop points defined |
785 |
|
786 |
const DLS::sample_loop_t& loop = pDimRgn->pSampleLoops[0]; |
787 |
const uint32_t loopEnd = loop.LoopStart + loop.LoopLength; |
788 |
|
789 |
if (GetPos() <= loopEnd) { |
790 |
switch (loop.LoopType) { |
791 |
|
792 |
case loop_type_bidirectional: { //TODO: not tested yet! |
793 |
do { |
794 |
// if not endless loop check if max. number of loop cycles have been passed |
795 |
if (this->LoopPlayCount && !pPlaybackState->loop_cycles_left) break; |
796 |
|
797 |
if (!pPlaybackState->reverse) { // forward playback |
798 |
do { |
799 |
samplestoloopend = loopEnd - GetPos(); |
800 |
readsamples = Read(&pDst[totalreadsamples * this->FrameSize], Min(samplestoread, samplestoloopend), pExternalDecompressionBuffer); |
801 |
samplestoread -= readsamples; |
802 |
totalreadsamples += readsamples; |
803 |
if (readsamples == samplestoloopend) { |
804 |
pPlaybackState->reverse = true; |
805 |
break; |
806 |
} |
807 |
} while (samplestoread && readsamples); |
808 |
} |
809 |
else { // backward playback |
810 |
|
811 |
// as we can only read forward from disk, we have to |
812 |
// determine the end position within the loop first, |
813 |
// read forward from that 'end' and finally after |
814 |
// reading, swap all sample frames so it reflects |
815 |
// backward playback |
816 |
|
817 |
unsigned long swapareastart = totalreadsamples; |
818 |
unsigned long loopoffset = GetPos() - loop.LoopStart; |
819 |
unsigned long samplestoreadinloop = Min(samplestoread, loopoffset); |
820 |
unsigned long reverseplaybackend = GetPos() - samplestoreadinloop; |
821 |
|
822 |
SetPos(reverseplaybackend); |
823 |
|
824 |
// read samples for backward playback |
825 |
do { |
826 |
readsamples = Read(&pDst[totalreadsamples * this->FrameSize], samplestoreadinloop, pExternalDecompressionBuffer); |
827 |
samplestoreadinloop -= readsamples; |
828 |
samplestoread -= readsamples; |
829 |
totalreadsamples += readsamples; |
830 |
} while (samplestoreadinloop && readsamples); |
831 |
|
832 |
SetPos(reverseplaybackend); // pretend we really read backwards |
833 |
|
834 |
if (reverseplaybackend == loop.LoopStart) { |
835 |
pPlaybackState->loop_cycles_left--; |
836 |
pPlaybackState->reverse = false; |
837 |
} |
838 |
|
839 |
// reverse the sample frames for backward playback |
840 |
SwapMemoryArea(&pDst[swapareastart * this->FrameSize], (totalreadsamples - swapareastart) * this->FrameSize, this->FrameSize); |
841 |
} |
842 |
} while (samplestoread && readsamples); |
843 |
break; |
844 |
} |
845 |
|
846 |
case loop_type_backward: { // TODO: not tested yet! |
847 |
// forward playback (not entered the loop yet) |
848 |
if (!pPlaybackState->reverse) do { |
849 |
samplestoloopend = loopEnd - GetPos(); |
850 |
readsamples = Read(&pDst[totalreadsamples * this->FrameSize], Min(samplestoread, samplestoloopend), pExternalDecompressionBuffer); |
851 |
samplestoread -= readsamples; |
852 |
totalreadsamples += readsamples; |
853 |
if (readsamples == samplestoloopend) { |
854 |
pPlaybackState->reverse = true; |
855 |
break; |
856 |
} |
857 |
} while (samplestoread && readsamples); |
858 |
|
859 |
if (!samplestoread) break; |
860 |
|
861 |
// as we can only read forward from disk, we have to |
862 |
// determine the end position within the loop first, |
863 |
// read forward from that 'end' and finally after |
864 |
// reading, swap all sample frames so it reflects |
865 |
// backward playback |
866 |
|
867 |
unsigned long swapareastart = totalreadsamples; |
868 |
unsigned long loopoffset = GetPos() - loop.LoopStart; |
869 |
unsigned long samplestoreadinloop = (this->LoopPlayCount) ? Min(samplestoread, pPlaybackState->loop_cycles_left * loop.LoopLength - loopoffset) |
870 |
: samplestoread; |
871 |
unsigned long reverseplaybackend = loop.LoopStart + Abs((loopoffset - samplestoreadinloop) % loop.LoopLength); |
872 |
|
873 |
SetPos(reverseplaybackend); |
874 |
|
875 |
// read samples for backward playback |
876 |
do { |
877 |
// if not endless loop check if max. number of loop cycles have been passed |
878 |
if (this->LoopPlayCount && !pPlaybackState->loop_cycles_left) break; |
879 |
samplestoloopend = loopEnd - GetPos(); |
880 |
readsamples = Read(&pDst[totalreadsamples * this->FrameSize], Min(samplestoreadinloop, samplestoloopend), pExternalDecompressionBuffer); |
881 |
samplestoreadinloop -= readsamples; |
882 |
samplestoread -= readsamples; |
883 |
totalreadsamples += readsamples; |
884 |
if (readsamples == samplestoloopend) { |
885 |
pPlaybackState->loop_cycles_left--; |
886 |
SetPos(loop.LoopStart); |
887 |
} |
888 |
} while (samplestoreadinloop && readsamples); |
889 |
|
890 |
SetPos(reverseplaybackend); // pretend we really read backwards |
891 |
|
892 |
// reverse the sample frames for backward playback |
893 |
SwapMemoryArea(&pDst[swapareastart * this->FrameSize], (totalreadsamples - swapareastart) * this->FrameSize, this->FrameSize); |
894 |
break; |
895 |
} |
896 |
|
897 |
default: case loop_type_normal: { |
898 |
do { |
899 |
// if not endless loop check if max. number of loop cycles have been passed |
900 |
if (this->LoopPlayCount && !pPlaybackState->loop_cycles_left) break; |
901 |
samplestoloopend = loopEnd - GetPos(); |
902 |
readsamples = Read(&pDst[totalreadsamples * this->FrameSize], Min(samplestoread, samplestoloopend), pExternalDecompressionBuffer); |
903 |
samplestoread -= readsamples; |
904 |
totalreadsamples += readsamples; |
905 |
if (readsamples == samplestoloopend) { |
906 |
pPlaybackState->loop_cycles_left--; |
907 |
SetPos(loop.LoopStart); |
908 |
} |
909 |
} while (samplestoread && readsamples); |
910 |
break; |
911 |
} |
912 |
} |
913 |
} |
914 |
} |
915 |
|
916 |
// read on without looping |
917 |
if (samplestoread) do { |
918 |
readsamples = Read(&pDst[totalreadsamples * this->FrameSize], samplestoread, pExternalDecompressionBuffer); |
919 |
samplestoread -= readsamples; |
920 |
totalreadsamples += readsamples; |
921 |
} while (readsamples && samplestoread); |
922 |
|
923 |
// store current position |
924 |
pPlaybackState->position = GetPos(); |
925 |
|
926 |
return totalreadsamples; |
927 |
} |
928 |
|
929 |
/** |
930 |
* Reads \a SampleCount number of sample points from the current |
931 |
* position into the buffer pointed by \a pBuffer and increments the |
932 |
* position within the sample. The sample wave stream will be |
933 |
* decompressed on the fly if using a compressed sample. Use this method |
934 |
* and <i>SetPos()</i> if you don't want to load the sample into RAM, |
935 |
* thus for disk streaming. |
936 |
* |
937 |
* <b>Caution:</b> If you are using more than one streaming thread, you |
938 |
* have to use an external decompression buffer for <b>EACH</b> |
939 |
* streaming thread to avoid race conditions and crashes! |
940 |
* |
941 |
* For 16 bit samples, the data in the buffer will be int16_t |
942 |
* (using native endianness). For 24 bit, the buffer will |
943 |
* contain three bytes per sample, little-endian. |
944 |
* |
945 |
* @param pBuffer destination buffer |
946 |
* @param SampleCount number of sample points to read |
947 |
* @param pExternalDecompressionBuffer (optional) external buffer to use for decompression |
948 |
* @returns number of successfully read sample points |
949 |
* @see SetPos(), CreateDecompressionBuffer() |
950 |
*/ |
951 |
unsigned long Sample::Read(void* pBuffer, unsigned long SampleCount, buffer_t* pExternalDecompressionBuffer) { |
952 |
if (SampleCount == 0) return 0; |
953 |
if (!Compressed) { |
954 |
if (BitDepth == 24) { |
955 |
return pCkData->Read(pBuffer, SampleCount * FrameSize, 1) / FrameSize; |
956 |
} |
957 |
else { // 16 bit |
958 |
// (pCkData->Read does endian correction) |
959 |
return Channels == 2 ? pCkData->Read(pBuffer, SampleCount << 1, 2) >> 1 |
960 |
: pCkData->Read(pBuffer, SampleCount, 2); |
961 |
} |
962 |
} |
963 |
else { |
964 |
if (this->SamplePos >= this->SamplesTotal) return 0; |
965 |
//TODO: efficiency: maybe we should test for an average compression rate |
966 |
unsigned long assumedsize = GuessSize(SampleCount), |
967 |
remainingbytes = 0, // remaining bytes in the local buffer |
968 |
remainingsamples = SampleCount, |
969 |
copysamples, skipsamples, |
970 |
currentframeoffset = this->FrameOffset; // offset in current sample frame since last Read() |
971 |
this->FrameOffset = 0; |
972 |
|
973 |
buffer_t* pDecompressionBuffer = (pExternalDecompressionBuffer) ? pExternalDecompressionBuffer : &InternalDecompressionBuffer; |
974 |
|
975 |
// if decompression buffer too small, then reduce amount of samples to read |
976 |
if (pDecompressionBuffer->Size < assumedsize) { |
977 |
std::cerr << "gig::Read(): WARNING - decompression buffer size too small!" << std::endl; |
978 |
SampleCount = WorstCaseMaxSamples(pDecompressionBuffer); |
979 |
remainingsamples = SampleCount; |
980 |
assumedsize = GuessSize(SampleCount); |
981 |
} |
982 |
|
983 |
unsigned char* pSrc = (unsigned char*) pDecompressionBuffer->pStart; |
984 |
int16_t* pDst = static_cast<int16_t*>(pBuffer); |
985 |
uint8_t* pDst24 = static_cast<uint8_t*>(pBuffer); |
986 |
remainingbytes = pCkData->Read(pSrc, assumedsize, 1); |
987 |
|
988 |
while (remainingsamples && remainingbytes) { |
989 |
unsigned long framesamples = SamplesPerFrame; |
990 |
unsigned long framebytes, rightChannelOffset = 0, nextFrameOffset; |
991 |
|
992 |
int mode_l = *pSrc++, mode_r = 0; |
993 |
|
994 |
if (Channels == 2) { |
995 |
mode_r = *pSrc++; |
996 |
framebytes = bytesPerFrame[mode_l] + bytesPerFrame[mode_r] + 2; |
997 |
rightChannelOffset = bytesPerFrameNoHdr[mode_l]; |
998 |
nextFrameOffset = rightChannelOffset + bytesPerFrameNoHdr[mode_r]; |
999 |
if (remainingbytes < framebytes) { // last frame in sample |
1000 |
framesamples = SamplesInLastFrame; |
1001 |
if (mode_l == 4 && (framesamples & 1)) { |
1002 |
rightChannelOffset = ((framesamples + 1) * bitsPerSample[mode_l]) >> 3; |
1003 |
} |
1004 |
else { |
1005 |
rightChannelOffset = (framesamples * bitsPerSample[mode_l]) >> 3; |
1006 |
} |
1007 |
} |
1008 |
} |
1009 |
else { |
1010 |
framebytes = bytesPerFrame[mode_l] + 1; |
1011 |
nextFrameOffset = bytesPerFrameNoHdr[mode_l]; |
1012 |
if (remainingbytes < framebytes) { |
1013 |
framesamples = SamplesInLastFrame; |
1014 |
} |
1015 |
} |
1016 |
|
1017 |
// determine how many samples in this frame to skip and read |
1018 |
if (currentframeoffset + remainingsamples >= framesamples) { |
1019 |
if (currentframeoffset <= framesamples) { |
1020 |
copysamples = framesamples - currentframeoffset; |
1021 |
skipsamples = currentframeoffset; |
1022 |
} |
1023 |
else { |
1024 |
copysamples = 0; |
1025 |
skipsamples = framesamples; |
1026 |
} |
1027 |
} |
1028 |
else { |
1029 |
// This frame has enough data for pBuffer, but not |
1030 |
// all of the frame is needed. Set file position |
1031 |
// to start of this frame for next call to Read. |
1032 |
copysamples = remainingsamples; |
1033 |
skipsamples = currentframeoffset; |
1034 |
pCkData->SetPos(remainingbytes, RIFF::stream_backward); |
1035 |
this->FrameOffset = currentframeoffset + copysamples; |
1036 |
} |
1037 |
remainingsamples -= copysamples; |
1038 |
|
1039 |
if (remainingbytes > framebytes) { |
1040 |
remainingbytes -= framebytes; |
1041 |
if (remainingsamples == 0 && |
1042 |
currentframeoffset + copysamples == framesamples) { |
1043 |
// This frame has enough data for pBuffer, and |
1044 |
// all of the frame is needed. Set file |
1045 |
// position to start of next frame for next |
1046 |
// call to Read. FrameOffset is 0. |
1047 |
pCkData->SetPos(remainingbytes, RIFF::stream_backward); |
1048 |
} |
1049 |
} |
1050 |
else remainingbytes = 0; |
1051 |
|
1052 |
currentframeoffset -= skipsamples; |
1053 |
|
1054 |
if (copysamples == 0) { |
1055 |
// skip this frame |
1056 |
pSrc += framebytes - Channels; |
1057 |
} |
1058 |
else { |
1059 |
const unsigned char* const param_l = pSrc; |
1060 |
if (BitDepth == 24) { |
1061 |
if (mode_l != 2) pSrc += 12; |
1062 |
|
1063 |
if (Channels == 2) { // Stereo |
1064 |
const unsigned char* const param_r = pSrc; |
1065 |
if (mode_r != 2) pSrc += 12; |
1066 |
|
1067 |
Decompress24(mode_l, param_l, 6, pSrc, pDst24, |
1068 |
skipsamples, copysamples, TruncatedBits); |
1069 |
Decompress24(mode_r, param_r, 6, pSrc + rightChannelOffset, pDst24 + 3, |
1070 |
skipsamples, copysamples, TruncatedBits); |
1071 |
pDst24 += copysamples * 6; |
1072 |
} |
1073 |
else { // Mono |
1074 |
Decompress24(mode_l, param_l, 3, pSrc, pDst24, |
1075 |
skipsamples, copysamples, TruncatedBits); |
1076 |
pDst24 += copysamples * 3; |
1077 |
} |
1078 |
} |
1079 |
else { // 16 bit |
1080 |
if (mode_l) pSrc += 4; |
1081 |
|
1082 |
int step; |
1083 |
if (Channels == 2) { // Stereo |
1084 |
const unsigned char* const param_r = pSrc; |
1085 |
if (mode_r) pSrc += 4; |
1086 |
|
1087 |
step = (2 - mode_l) + (2 - mode_r); |
1088 |
Decompress16(mode_l, param_l, step, 2, pSrc, pDst, skipsamples, copysamples); |
1089 |
Decompress16(mode_r, param_r, step, 2, pSrc + (2 - mode_l), pDst + 1, |
1090 |
skipsamples, copysamples); |
1091 |
pDst += copysamples << 1; |
1092 |
} |
1093 |
else { // Mono |
1094 |
step = 2 - mode_l; |
1095 |
Decompress16(mode_l, param_l, step, 1, pSrc, pDst, skipsamples, copysamples); |
1096 |
pDst += copysamples; |
1097 |
} |
1098 |
} |
1099 |
pSrc += nextFrameOffset; |
1100 |
} |
1101 |
|
1102 |
// reload from disk to local buffer if needed |
1103 |
if (remainingsamples && remainingbytes < WorstCaseFrameSize && pCkData->GetState() == RIFF::stream_ready) { |
1104 |
assumedsize = GuessSize(remainingsamples); |
1105 |
pCkData->SetPos(remainingbytes, RIFF::stream_backward); |
1106 |
if (pCkData->RemainingBytes() < assumedsize) assumedsize = pCkData->RemainingBytes(); |
1107 |
remainingbytes = pCkData->Read(pDecompressionBuffer->pStart, assumedsize, 1); |
1108 |
pSrc = (unsigned char*) pDecompressionBuffer->pStart; |
1109 |
} |
1110 |
} // while |
1111 |
|
1112 |
this->SamplePos += (SampleCount - remainingsamples); |
1113 |
if (this->SamplePos > this->SamplesTotal) this->SamplePos = this->SamplesTotal; |
1114 |
return (SampleCount - remainingsamples); |
1115 |
} |
1116 |
} |
1117 |
|
1118 |
/** @brief Write sample wave data. |
1119 |
* |
1120 |
* Writes \a SampleCount number of sample points from the buffer pointed |
1121 |
* by \a pBuffer and increments the position within the sample. Use this |
1122 |
* method to directly write the sample data to disk, i.e. if you don't |
1123 |
* want or cannot load the whole sample data into RAM. |
1124 |
* |
1125 |
* You have to Resize() the sample to the desired size and call |
1126 |
* File::Save() <b>before</b> using Write(). |
1127 |
* |
1128 |
* Note: there is currently no support for writing compressed samples. |
1129 |
* |
1130 |
* @param pBuffer - source buffer |
1131 |
* @param SampleCount - number of sample points to write |
1132 |
* @throws DLS::Exception if current sample size is too small |
1133 |
* @throws gig::Exception if sample is compressed |
1134 |
* @see DLS::LoadSampleData() |
1135 |
*/ |
1136 |
unsigned long Sample::Write(void* pBuffer, unsigned long SampleCount) { |
1137 |
if (Compressed) throw gig::Exception("There is no support for writing compressed gig samples (yet)"); |
1138 |
return DLS::Sample::Write(pBuffer, SampleCount); |
1139 |
} |
1140 |
|
1141 |
/** |
1142 |
* Allocates a decompression buffer for streaming (compressed) samples |
1143 |
* with Sample::Read(). If you are using more than one streaming thread |
1144 |
* in your application you <b>HAVE</b> to create a decompression buffer |
1145 |
* for <b>EACH</b> of your streaming threads and provide it with the |
1146 |
* Sample::Read() call in order to avoid race conditions and crashes. |
1147 |
* |
1148 |
* You should free the memory occupied by the allocated buffer(s) once |
1149 |
* you don't need one of your streaming threads anymore by calling |
1150 |
* DestroyDecompressionBuffer(). |
1151 |
* |
1152 |
* @param MaxReadSize - the maximum size (in sample points) you ever |
1153 |
* expect to read with one Read() call |
1154 |
* @returns allocated decompression buffer |
1155 |
* @see DestroyDecompressionBuffer() |
1156 |
*/ |
1157 |
buffer_t Sample::CreateDecompressionBuffer(unsigned long MaxReadSize) { |
1158 |
buffer_t result; |
1159 |
const double worstCaseHeaderOverhead = |
1160 |
(256.0 /*frame size*/ + 12.0 /*header*/ + 2.0 /*compression type flag (stereo)*/) / 256.0; |
1161 |
result.Size = (unsigned long) (double(MaxReadSize) * 3.0 /*(24 Bit)*/ * 2.0 /*stereo*/ * worstCaseHeaderOverhead); |
1162 |
result.pStart = new int8_t[result.Size]; |
1163 |
result.NullExtensionSize = 0; |
1164 |
return result; |
1165 |
} |
1166 |
|
1167 |
/** |
1168 |
* Free decompression buffer, previously created with |
1169 |
* CreateDecompressionBuffer(). |
1170 |
* |
1171 |
* @param DecompressionBuffer - previously allocated decompression |
1172 |
* buffer to free |
1173 |
*/ |
1174 |
void Sample::DestroyDecompressionBuffer(buffer_t& DecompressionBuffer) { |
1175 |
if (DecompressionBuffer.Size && DecompressionBuffer.pStart) { |
1176 |
delete[] (int8_t*) DecompressionBuffer.pStart; |
1177 |
DecompressionBuffer.pStart = NULL; |
1178 |
DecompressionBuffer.Size = 0; |
1179 |
DecompressionBuffer.NullExtensionSize = 0; |
1180 |
} |
1181 |
} |
1182 |
|
1183 |
/** |
1184 |
* Returns pointer to the Group this Sample belongs to. In the .gig |
1185 |
* format a sample always belongs to one group. If it wasn't explicitly |
1186 |
* assigned to a certain group, it will be automatically assigned to a |
1187 |
* default group. |
1188 |
* |
1189 |
* @returns Sample's Group (never NULL) |
1190 |
*/ |
1191 |
Group* Sample::GetGroup() const { |
1192 |
return pGroup; |
1193 |
} |
1194 |
|
1195 |
Sample::~Sample() { |
1196 |
Instances--; |
1197 |
if (!Instances && InternalDecompressionBuffer.Size) { |
1198 |
delete[] (unsigned char*) InternalDecompressionBuffer.pStart; |
1199 |
InternalDecompressionBuffer.pStart = NULL; |
1200 |
InternalDecompressionBuffer.Size = 0; |
1201 |
} |
1202 |
if (FrameTable) delete[] FrameTable; |
1203 |
if (RAMCache.pStart) delete[] (int8_t*) RAMCache.pStart; |
1204 |
} |
1205 |
|
1206 |
|
1207 |
|
1208 |
// *************** DimensionRegion *************** |
1209 |
// * |
1210 |
|
1211 |
uint DimensionRegion::Instances = 0; |
1212 |
DimensionRegion::VelocityTableMap* DimensionRegion::pVelocityTables = NULL; |
1213 |
|
1214 |
DimensionRegion::DimensionRegion(RIFF::List* _3ewl) : DLS::Sampler(_3ewl) { |
1215 |
Instances++; |
1216 |
|
1217 |
pSample = NULL; |
1218 |
|
1219 |
memcpy(&Crossfade, &SamplerOptions, 4); |
1220 |
if (!pVelocityTables) pVelocityTables = new VelocityTableMap; |
1221 |
|
1222 |
RIFF::Chunk* _3ewa = _3ewl->GetSubChunk(CHUNK_ID_3EWA); |
1223 |
if (_3ewa) { // if '3ewa' chunk exists |
1224 |
_3ewa->ReadInt32(); // unknown, always == chunk size ? |
1225 |
LFO3Frequency = (double) GIG_EXP_DECODE(_3ewa->ReadInt32()); |
1226 |
EG3Attack = (double) GIG_EXP_DECODE(_3ewa->ReadInt32()); |
1227 |
_3ewa->ReadInt16(); // unknown |
1228 |
LFO1InternalDepth = _3ewa->ReadUint16(); |
1229 |
_3ewa->ReadInt16(); // unknown |
1230 |
LFO3InternalDepth = _3ewa->ReadInt16(); |
1231 |
_3ewa->ReadInt16(); // unknown |
1232 |
LFO1ControlDepth = _3ewa->ReadUint16(); |
1233 |
_3ewa->ReadInt16(); // unknown |
1234 |
LFO3ControlDepth = _3ewa->ReadInt16(); |
1235 |
EG1Attack = (double) GIG_EXP_DECODE(_3ewa->ReadInt32()); |
1236 |
EG1Decay1 = (double) GIG_EXP_DECODE(_3ewa->ReadInt32()); |
1237 |
_3ewa->ReadInt16(); // unknown |
1238 |
EG1Sustain = _3ewa->ReadUint16(); |
1239 |
EG1Release = (double) GIG_EXP_DECODE(_3ewa->ReadInt32()); |
1240 |
EG1Controller = DecodeLeverageController(static_cast<_lev_ctrl_t>(_3ewa->ReadUint8())); |
1241 |
uint8_t eg1ctrloptions = _3ewa->ReadUint8(); |
1242 |
EG1ControllerInvert = eg1ctrloptions & 0x01; |
1243 |
EG1ControllerAttackInfluence = GIG_EG_CTR_ATTACK_INFLUENCE_EXTRACT(eg1ctrloptions); |
1244 |
EG1ControllerDecayInfluence = GIG_EG_CTR_DECAY_INFLUENCE_EXTRACT(eg1ctrloptions); |
1245 |
EG1ControllerReleaseInfluence = GIG_EG_CTR_RELEASE_INFLUENCE_EXTRACT(eg1ctrloptions); |
1246 |
EG2Controller = DecodeLeverageController(static_cast<_lev_ctrl_t>(_3ewa->ReadUint8())); |
1247 |
uint8_t eg2ctrloptions = _3ewa->ReadUint8(); |
1248 |
EG2ControllerInvert = eg2ctrloptions & 0x01; |
1249 |
EG2ControllerAttackInfluence = GIG_EG_CTR_ATTACK_INFLUENCE_EXTRACT(eg2ctrloptions); |
1250 |
EG2ControllerDecayInfluence = GIG_EG_CTR_DECAY_INFLUENCE_EXTRACT(eg2ctrloptions); |
1251 |
EG2ControllerReleaseInfluence = GIG_EG_CTR_RELEASE_INFLUENCE_EXTRACT(eg2ctrloptions); |
1252 |
LFO1Frequency = (double) GIG_EXP_DECODE(_3ewa->ReadInt32()); |
1253 |
EG2Attack = (double) GIG_EXP_DECODE(_3ewa->ReadInt32()); |
1254 |
EG2Decay1 = (double) GIG_EXP_DECODE(_3ewa->ReadInt32()); |
1255 |
_3ewa->ReadInt16(); // unknown |
1256 |
EG2Sustain = _3ewa->ReadUint16(); |
1257 |
EG2Release = (double) GIG_EXP_DECODE(_3ewa->ReadInt32()); |
1258 |
_3ewa->ReadInt16(); // unknown |
1259 |
LFO2ControlDepth = _3ewa->ReadUint16(); |
1260 |
LFO2Frequency = (double) GIG_EXP_DECODE(_3ewa->ReadInt32()); |
1261 |
_3ewa->ReadInt16(); // unknown |
1262 |
LFO2InternalDepth = _3ewa->ReadUint16(); |
1263 |
int32_t eg1decay2 = _3ewa->ReadInt32(); |
1264 |
EG1Decay2 = (double) GIG_EXP_DECODE(eg1decay2); |
1265 |
EG1InfiniteSustain = (eg1decay2 == 0x7fffffff); |
1266 |
_3ewa->ReadInt16(); // unknown |
1267 |
EG1PreAttack = _3ewa->ReadUint16(); |
1268 |
int32_t eg2decay2 = _3ewa->ReadInt32(); |
1269 |
EG2Decay2 = (double) GIG_EXP_DECODE(eg2decay2); |
1270 |
EG2InfiniteSustain = (eg2decay2 == 0x7fffffff); |
1271 |
_3ewa->ReadInt16(); // unknown |
1272 |
EG2PreAttack = _3ewa->ReadUint16(); |
1273 |
uint8_t velocityresponse = _3ewa->ReadUint8(); |
1274 |
if (velocityresponse < 5) { |
1275 |
VelocityResponseCurve = curve_type_nonlinear; |
1276 |
VelocityResponseDepth = velocityresponse; |
1277 |
} else if (velocityresponse < 10) { |
1278 |
VelocityResponseCurve = curve_type_linear; |
1279 |
VelocityResponseDepth = velocityresponse - 5; |
1280 |
} else if (velocityresponse < 15) { |
1281 |
VelocityResponseCurve = curve_type_special; |
1282 |
VelocityResponseDepth = velocityresponse - 10; |
1283 |
} else { |
1284 |
VelocityResponseCurve = curve_type_unknown; |
1285 |
VelocityResponseDepth = 0; |
1286 |
} |
1287 |
uint8_t releasevelocityresponse = _3ewa->ReadUint8(); |
1288 |
if (releasevelocityresponse < 5) { |
1289 |
ReleaseVelocityResponseCurve = curve_type_nonlinear; |
1290 |
ReleaseVelocityResponseDepth = releasevelocityresponse; |
1291 |
} else if (releasevelocityresponse < 10) { |
1292 |
ReleaseVelocityResponseCurve = curve_type_linear; |
1293 |
ReleaseVelocityResponseDepth = releasevelocityresponse - 5; |
1294 |
} else if (releasevelocityresponse < 15) { |
1295 |
ReleaseVelocityResponseCurve = curve_type_special; |
1296 |
ReleaseVelocityResponseDepth = releasevelocityresponse - 10; |
1297 |
} else { |
1298 |
ReleaseVelocityResponseCurve = curve_type_unknown; |
1299 |
ReleaseVelocityResponseDepth = 0; |
1300 |
} |
1301 |
VelocityResponseCurveScaling = _3ewa->ReadUint8(); |
1302 |
AttenuationControllerThreshold = _3ewa->ReadInt8(); |
1303 |
_3ewa->ReadInt32(); // unknown |
1304 |
SampleStartOffset = (uint16_t) _3ewa->ReadInt16(); |
1305 |
_3ewa->ReadInt16(); // unknown |
1306 |
uint8_t pitchTrackDimensionBypass = _3ewa->ReadInt8(); |
1307 |
PitchTrack = GIG_PITCH_TRACK_EXTRACT(pitchTrackDimensionBypass); |
1308 |
if (pitchTrackDimensionBypass & 0x10) DimensionBypass = dim_bypass_ctrl_94; |
1309 |
else if (pitchTrackDimensionBypass & 0x20) DimensionBypass = dim_bypass_ctrl_95; |
1310 |
else DimensionBypass = dim_bypass_ctrl_none; |
1311 |
uint8_t pan = _3ewa->ReadUint8(); |
1312 |
Pan = (pan < 64) ? pan : -((int)pan - 63); // signed 7 bit -> signed 8 bit |
1313 |
SelfMask = _3ewa->ReadInt8() & 0x01; |
1314 |
_3ewa->ReadInt8(); // unknown |
1315 |
uint8_t lfo3ctrl = _3ewa->ReadUint8(); |
1316 |
LFO3Controller = static_cast<lfo3_ctrl_t>(lfo3ctrl & 0x07); // lower 3 bits |
1317 |
LFO3Sync = lfo3ctrl & 0x20; // bit 5 |
1318 |
InvertAttenuationController = lfo3ctrl & 0x80; // bit 7 |
1319 |
AttenuationController = DecodeLeverageController(static_cast<_lev_ctrl_t>(_3ewa->ReadUint8())); |
1320 |
uint8_t lfo2ctrl = _3ewa->ReadUint8(); |
1321 |
LFO2Controller = static_cast<lfo2_ctrl_t>(lfo2ctrl & 0x07); // lower 3 bits |
1322 |
LFO2FlipPhase = lfo2ctrl & 0x80; // bit 7 |
1323 |
LFO2Sync = lfo2ctrl & 0x20; // bit 5 |
1324 |
bool extResonanceCtrl = lfo2ctrl & 0x40; // bit 6 |
1325 |
uint8_t lfo1ctrl = _3ewa->ReadUint8(); |
1326 |
LFO1Controller = static_cast<lfo1_ctrl_t>(lfo1ctrl & 0x07); // lower 3 bits |
1327 |
LFO1FlipPhase = lfo1ctrl & 0x80; // bit 7 |
1328 |
LFO1Sync = lfo1ctrl & 0x40; // bit 6 |
1329 |
VCFResonanceController = (extResonanceCtrl) ? static_cast<vcf_res_ctrl_t>(GIG_VCF_RESONANCE_CTRL_EXTRACT(lfo1ctrl)) |
1330 |
: vcf_res_ctrl_none; |
1331 |
uint16_t eg3depth = _3ewa->ReadUint16(); |
1332 |
EG3Depth = (eg3depth <= 1200) ? eg3depth /* positives */ |
1333 |
: (-1) * (int16_t) ((eg3depth ^ 0xffff) + 1); /* binary complementary for negatives */ |
1334 |
_3ewa->ReadInt16(); // unknown |
1335 |
ChannelOffset = _3ewa->ReadUint8() / 4; |
1336 |
uint8_t regoptions = _3ewa->ReadUint8(); |
1337 |
MSDecode = regoptions & 0x01; // bit 0 |
1338 |
SustainDefeat = regoptions & 0x02; // bit 1 |
1339 |
_3ewa->ReadInt16(); // unknown |
1340 |
VelocityUpperLimit = _3ewa->ReadInt8(); |
1341 |
_3ewa->ReadInt8(); // unknown |
1342 |
_3ewa->ReadInt16(); // unknown |
1343 |
ReleaseTriggerDecay = _3ewa->ReadUint8(); // release trigger decay |
1344 |
_3ewa->ReadInt8(); // unknown |
1345 |
_3ewa->ReadInt8(); // unknown |
1346 |
EG1Hold = _3ewa->ReadUint8() & 0x80; // bit 7 |
1347 |
uint8_t vcfcutoff = _3ewa->ReadUint8(); |
1348 |
VCFEnabled = vcfcutoff & 0x80; // bit 7 |
1349 |
VCFCutoff = vcfcutoff & 0x7f; // lower 7 bits |
1350 |
VCFCutoffController = static_cast<vcf_cutoff_ctrl_t>(_3ewa->ReadUint8()); |
1351 |
uint8_t vcfvelscale = _3ewa->ReadUint8(); |
1352 |
VCFCutoffControllerInvert = vcfvelscale & 0x80; // bit 7 |
1353 |
VCFVelocityScale = vcfvelscale & 0x7f; // lower 7 bits |
1354 |
_3ewa->ReadInt8(); // unknown |
1355 |
uint8_t vcfresonance = _3ewa->ReadUint8(); |
1356 |
VCFResonance = vcfresonance & 0x7f; // lower 7 bits |
1357 |
VCFResonanceDynamic = !(vcfresonance & 0x80); // bit 7 |
1358 |
uint8_t vcfbreakpoint = _3ewa->ReadUint8(); |
1359 |
VCFKeyboardTracking = vcfbreakpoint & 0x80; // bit 7 |
1360 |
VCFKeyboardTrackingBreakpoint = vcfbreakpoint & 0x7f; // lower 7 bits |
1361 |
uint8_t vcfvelocity = _3ewa->ReadUint8(); |
1362 |
VCFVelocityDynamicRange = vcfvelocity % 5; |
1363 |
VCFVelocityCurve = static_cast<curve_type_t>(vcfvelocity / 5); |
1364 |
VCFType = static_cast<vcf_type_t>(_3ewa->ReadUint8()); |
1365 |
if (VCFType == vcf_type_lowpass) { |
1366 |
if (lfo3ctrl & 0x40) // bit 6 |
1367 |
VCFType = vcf_type_lowpassturbo; |
1368 |
} |
1369 |
if (_3ewa->RemainingBytes() >= 8) { |
1370 |
_3ewa->Read(DimensionUpperLimits, 1, 8); |
1371 |
} else { |
1372 |
memset(DimensionUpperLimits, 0, 8); |
1373 |
} |
1374 |
} else { // '3ewa' chunk does not exist yet |
1375 |
// use default values |
1376 |
LFO3Frequency = 1.0; |
1377 |
EG3Attack = 0.0; |
1378 |
LFO1InternalDepth = 0; |
1379 |
LFO3InternalDepth = 0; |
1380 |
LFO1ControlDepth = 0; |
1381 |
LFO3ControlDepth = 0; |
1382 |
EG1Attack = 0.0; |
1383 |
EG1Decay1 = 0.0; |
1384 |
EG1Sustain = 0; |
1385 |
EG1Release = 0.0; |
1386 |
EG1Controller.type = eg1_ctrl_t::type_none; |
1387 |
EG1Controller.controller_number = 0; |
1388 |
EG1ControllerInvert = false; |
1389 |
EG1ControllerAttackInfluence = 0; |
1390 |
EG1ControllerDecayInfluence = 0; |
1391 |
EG1ControllerReleaseInfluence = 0; |
1392 |
EG2Controller.type = eg2_ctrl_t::type_none; |
1393 |
EG2Controller.controller_number = 0; |
1394 |
EG2ControllerInvert = false; |
1395 |
EG2ControllerAttackInfluence = 0; |
1396 |
EG2ControllerDecayInfluence = 0; |
1397 |
EG2ControllerReleaseInfluence = 0; |
1398 |
LFO1Frequency = 1.0; |
1399 |
EG2Attack = 0.0; |
1400 |
EG2Decay1 = 0.0; |
1401 |
EG2Sustain = 0; |
1402 |
EG2Release = 0.0; |
1403 |
LFO2ControlDepth = 0; |
1404 |
LFO2Frequency = 1.0; |
1405 |
LFO2InternalDepth = 0; |
1406 |
EG1Decay2 = 0.0; |
1407 |
EG1InfiniteSustain = false; |
1408 |
EG1PreAttack = 1000; |
1409 |
EG2Decay2 = 0.0; |
1410 |
EG2InfiniteSustain = false; |
1411 |
EG2PreAttack = 1000; |
1412 |
VelocityResponseCurve = curve_type_nonlinear; |
1413 |
VelocityResponseDepth = 3; |
1414 |
ReleaseVelocityResponseCurve = curve_type_nonlinear; |
1415 |
ReleaseVelocityResponseDepth = 3; |
1416 |
VelocityResponseCurveScaling = 32; |
1417 |
AttenuationControllerThreshold = 0; |
1418 |
SampleStartOffset = 0; |
1419 |
PitchTrack = true; |
1420 |
DimensionBypass = dim_bypass_ctrl_none; |
1421 |
Pan = 0; |
1422 |
SelfMask = true; |
1423 |
LFO3Controller = lfo3_ctrl_modwheel; |
1424 |
LFO3Sync = false; |
1425 |
InvertAttenuationController = false; |
1426 |
AttenuationController.type = attenuation_ctrl_t::type_none; |
1427 |
AttenuationController.controller_number = 0; |
1428 |
LFO2Controller = lfo2_ctrl_internal; |
1429 |
LFO2FlipPhase = false; |
1430 |
LFO2Sync = false; |
1431 |
LFO1Controller = lfo1_ctrl_internal; |
1432 |
LFO1FlipPhase = false; |
1433 |
LFO1Sync = false; |
1434 |
VCFResonanceController = vcf_res_ctrl_none; |
1435 |
EG3Depth = 0; |
1436 |
ChannelOffset = 0; |
1437 |
MSDecode = false; |
1438 |
SustainDefeat = false; |
1439 |
VelocityUpperLimit = 0; |
1440 |
ReleaseTriggerDecay = 0; |
1441 |
EG1Hold = false; |
1442 |
VCFEnabled = false; |
1443 |
VCFCutoff = 0; |
1444 |
VCFCutoffController = vcf_cutoff_ctrl_none; |
1445 |
VCFCutoffControllerInvert = false; |
1446 |
VCFVelocityScale = 0; |
1447 |
VCFResonance = 0; |
1448 |
VCFResonanceDynamic = false; |
1449 |
VCFKeyboardTracking = false; |
1450 |
VCFKeyboardTrackingBreakpoint = 0; |
1451 |
VCFVelocityDynamicRange = 0x04; |
1452 |
VCFVelocityCurve = curve_type_linear; |
1453 |
VCFType = vcf_type_lowpass; |
1454 |
memset(DimensionUpperLimits, 0, 8); |
1455 |
} |
1456 |
|
1457 |
pVelocityAttenuationTable = GetVelocityTable(VelocityResponseCurve, |
1458 |
VelocityResponseDepth, |
1459 |
VelocityResponseCurveScaling); |
1460 |
|
1461 |
curve_type_t curveType = ReleaseVelocityResponseCurve; |
1462 |
uint8_t depth = ReleaseVelocityResponseDepth; |
1463 |
|
1464 |
// this models a strange behaviour or bug in GSt: two of the |
1465 |
// velocity response curves for release time are not used even |
1466 |
// if specified, instead another curve is chosen. |
1467 |
if ((curveType == curve_type_nonlinear && depth == 0) || |
1468 |
(curveType == curve_type_special && depth == 4)) { |
1469 |
curveType = curve_type_nonlinear; |
1470 |
depth = 3; |
1471 |
} |
1472 |
pVelocityReleaseTable = GetVelocityTable(curveType, depth, 0); |
1473 |
|
1474 |
curveType = VCFVelocityCurve; |
1475 |
depth = VCFVelocityDynamicRange; |
1476 |
|
1477 |
// even stranger GSt: two of the velocity response curves for |
1478 |
// filter cutoff are not used, instead another special curve |
1479 |
// is chosen. This curve is not used anywhere else. |
1480 |
if ((curveType == curve_type_nonlinear && depth == 0) || |
1481 |
(curveType == curve_type_special && depth == 4)) { |
1482 |
curveType = curve_type_special; |
1483 |
depth = 5; |
1484 |
} |
1485 |
pVelocityCutoffTable = GetVelocityTable(curveType, depth, |
1486 |
VCFCutoffController <= vcf_cutoff_ctrl_none2 ? VCFVelocityScale : 0); |
1487 |
|
1488 |
SampleAttenuation = pow(10.0, -Gain / (20.0 * 655360)); |
1489 |
VelocityTable = 0; |
1490 |
} |
1491 |
|
1492 |
/** |
1493 |
* Apply dimension region settings to the respective RIFF chunks. You |
1494 |
* have to call File::Save() to make changes persistent. |
1495 |
* |
1496 |
* Usually there is absolutely no need to call this method explicitly. |
1497 |
* It will be called automatically when File::Save() was called. |
1498 |
*/ |
1499 |
void DimensionRegion::UpdateChunks() { |
1500 |
// first update base class's chunk |
1501 |
DLS::Sampler::UpdateChunks(); |
1502 |
|
1503 |
// make sure '3ewa' chunk exists |
1504 |
RIFF::Chunk* _3ewa = pParentList->GetSubChunk(CHUNK_ID_3EWA); |
1505 |
if (!_3ewa) _3ewa = pParentList->AddSubChunk(CHUNK_ID_3EWA, 140); |
1506 |
uint8_t* pData = (uint8_t*) _3ewa->LoadChunkData(); |
1507 |
|
1508 |
// update '3ewa' chunk with DimensionRegion's current settings |
1509 |
|
1510 |
const uint32_t chunksize = _3ewa->GetSize(); |
1511 |
store32(&pData[0], chunksize); // unknown, always chunk size? |
1512 |
|
1513 |
const int32_t lfo3freq = (int32_t) GIG_EXP_ENCODE(LFO3Frequency); |
1514 |
store32(&pData[4], lfo3freq); |
1515 |
|
1516 |
const int32_t eg3attack = (int32_t) GIG_EXP_ENCODE(EG3Attack); |
1517 |
store32(&pData[8], eg3attack); |
1518 |
|
1519 |
// next 2 bytes unknown |
1520 |
|
1521 |
store16(&pData[14], LFO1InternalDepth); |
1522 |
|
1523 |
// next 2 bytes unknown |
1524 |
|
1525 |
store16(&pData[18], LFO3InternalDepth); |
1526 |
|
1527 |
// next 2 bytes unknown |
1528 |
|
1529 |
store16(&pData[22], LFO1ControlDepth); |
1530 |
|
1531 |
// next 2 bytes unknown |
1532 |
|
1533 |
store16(&pData[26], LFO3ControlDepth); |
1534 |
|
1535 |
const int32_t eg1attack = (int32_t) GIG_EXP_ENCODE(EG1Attack); |
1536 |
store32(&pData[28], eg1attack); |
1537 |
|
1538 |
const int32_t eg1decay1 = (int32_t) GIG_EXP_ENCODE(EG1Decay1); |
1539 |
store32(&pData[32], eg1decay1); |
1540 |
|
1541 |
// next 2 bytes unknown |
1542 |
|
1543 |
store16(&pData[38], EG1Sustain); |
1544 |
|
1545 |
const int32_t eg1release = (int32_t) GIG_EXP_ENCODE(EG1Release); |
1546 |
store32(&pData[40], eg1release); |
1547 |
|
1548 |
const uint8_t eg1ctl = (uint8_t) EncodeLeverageController(EG1Controller); |
1549 |
pData[44] = eg1ctl; |
1550 |
|
1551 |
const uint8_t eg1ctrloptions = |
1552 |
(EG1ControllerInvert) ? 0x01 : 0x00 | |
1553 |
GIG_EG_CTR_ATTACK_INFLUENCE_ENCODE(EG1ControllerAttackInfluence) | |
1554 |
GIG_EG_CTR_DECAY_INFLUENCE_ENCODE(EG1ControllerDecayInfluence) | |
1555 |
GIG_EG_CTR_RELEASE_INFLUENCE_ENCODE(EG1ControllerReleaseInfluence); |
1556 |
pData[45] = eg1ctrloptions; |
1557 |
|
1558 |
const uint8_t eg2ctl = (uint8_t) EncodeLeverageController(EG2Controller); |
1559 |
pData[46] = eg2ctl; |
1560 |
|
1561 |
const uint8_t eg2ctrloptions = |
1562 |
(EG2ControllerInvert) ? 0x01 : 0x00 | |
1563 |
GIG_EG_CTR_ATTACK_INFLUENCE_ENCODE(EG2ControllerAttackInfluence) | |
1564 |
GIG_EG_CTR_DECAY_INFLUENCE_ENCODE(EG2ControllerDecayInfluence) | |
1565 |
GIG_EG_CTR_RELEASE_INFLUENCE_ENCODE(EG2ControllerReleaseInfluence); |
1566 |
pData[47] = eg2ctrloptions; |
1567 |
|
1568 |
const int32_t lfo1freq = (int32_t) GIG_EXP_ENCODE(LFO1Frequency); |
1569 |
store32(&pData[48], lfo1freq); |
1570 |
|
1571 |
const int32_t eg2attack = (int32_t) GIG_EXP_ENCODE(EG2Attack); |
1572 |
store32(&pData[52], eg2attack); |
1573 |
|
1574 |
const int32_t eg2decay1 = (int32_t) GIG_EXP_ENCODE(EG2Decay1); |
1575 |
store32(&pData[56], eg2decay1); |
1576 |
|
1577 |
// next 2 bytes unknown |
1578 |
|
1579 |
store16(&pData[62], EG2Sustain); |
1580 |
|
1581 |
const int32_t eg2release = (int32_t) GIG_EXP_ENCODE(EG2Release); |
1582 |
store32(&pData[64], eg2release); |
1583 |
|
1584 |
// next 2 bytes unknown |
1585 |
|
1586 |
store16(&pData[70], LFO2ControlDepth); |
1587 |
|
1588 |
const int32_t lfo2freq = (int32_t) GIG_EXP_ENCODE(LFO2Frequency); |
1589 |
store32(&pData[72], lfo2freq); |
1590 |
|
1591 |
// next 2 bytes unknown |
1592 |
|
1593 |
store16(&pData[78], LFO2InternalDepth); |
1594 |
|
1595 |
const int32_t eg1decay2 = (int32_t) (EG1InfiniteSustain) ? 0x7fffffff : (int32_t) GIG_EXP_ENCODE(EG1Decay2); |
1596 |
store32(&pData[80], eg1decay2); |
1597 |
|
1598 |
// next 2 bytes unknown |
1599 |
|
1600 |
store16(&pData[86], EG1PreAttack); |
1601 |
|
1602 |
const int32_t eg2decay2 = (int32_t) (EG2InfiniteSustain) ? 0x7fffffff : (int32_t) GIG_EXP_ENCODE(EG2Decay2); |
1603 |
store32(&pData[88], eg2decay2); |
1604 |
|
1605 |
// next 2 bytes unknown |
1606 |
|
1607 |
store16(&pData[94], EG2PreAttack); |
1608 |
|
1609 |
{ |
1610 |
if (VelocityResponseDepth > 4) throw Exception("VelocityResponseDepth must be between 0 and 4"); |
1611 |
uint8_t velocityresponse = VelocityResponseDepth; |
1612 |
switch (VelocityResponseCurve) { |
1613 |
case curve_type_nonlinear: |
1614 |
break; |
1615 |
case curve_type_linear: |
1616 |
velocityresponse += 5; |
1617 |
break; |
1618 |
case curve_type_special: |
1619 |
velocityresponse += 10; |
1620 |
break; |
1621 |
case curve_type_unknown: |
1622 |
default: |
1623 |
throw Exception("Could not update DimensionRegion's chunk, unknown VelocityResponseCurve selected"); |
1624 |
} |
1625 |
pData[96] = velocityresponse; |
1626 |
} |
1627 |
|
1628 |
{ |
1629 |
if (ReleaseVelocityResponseDepth > 4) throw Exception("ReleaseVelocityResponseDepth must be between 0 and 4"); |
1630 |
uint8_t releasevelocityresponse = ReleaseVelocityResponseDepth; |
1631 |
switch (ReleaseVelocityResponseCurve) { |
1632 |
case curve_type_nonlinear: |
1633 |
break; |
1634 |
case curve_type_linear: |
1635 |
releasevelocityresponse += 5; |
1636 |
break; |
1637 |
case curve_type_special: |
1638 |
releasevelocityresponse += 10; |
1639 |
break; |
1640 |
case curve_type_unknown: |
1641 |
default: |
1642 |
throw Exception("Could not update DimensionRegion's chunk, unknown ReleaseVelocityResponseCurve selected"); |
1643 |
} |
1644 |
pData[97] = releasevelocityresponse; |
1645 |
} |
1646 |
|
1647 |
pData[98] = VelocityResponseCurveScaling; |
1648 |
|
1649 |
pData[99] = AttenuationControllerThreshold; |
1650 |
|
1651 |
// next 4 bytes unknown |
1652 |
|
1653 |
store16(&pData[104], SampleStartOffset); |
1654 |
|
1655 |
// next 2 bytes unknown |
1656 |
|
1657 |
{ |
1658 |
uint8_t pitchTrackDimensionBypass = GIG_PITCH_TRACK_ENCODE(PitchTrack); |
1659 |
switch (DimensionBypass) { |
1660 |
case dim_bypass_ctrl_94: |
1661 |
pitchTrackDimensionBypass |= 0x10; |
1662 |
break; |
1663 |
case dim_bypass_ctrl_95: |
1664 |
pitchTrackDimensionBypass |= 0x20; |
1665 |
break; |
1666 |
case dim_bypass_ctrl_none: |
1667 |
//FIXME: should we set anything here? |
1668 |
break; |
1669 |
default: |
1670 |
throw Exception("Could not update DimensionRegion's chunk, unknown DimensionBypass selected"); |
1671 |
} |
1672 |
pData[108] = pitchTrackDimensionBypass; |
1673 |
} |
1674 |
|
1675 |
const uint8_t pan = (Pan >= 0) ? Pan : ((-Pan) + 63); // signed 8 bit -> signed 7 bit |
1676 |
pData[109] = pan; |
1677 |
|
1678 |
const uint8_t selfmask = (SelfMask) ? 0x01 : 0x00; |
1679 |
pData[110] = selfmask; |
1680 |
|
1681 |
// next byte unknown |
1682 |
|
1683 |
{ |
1684 |
uint8_t lfo3ctrl = LFO3Controller & 0x07; // lower 3 bits |
1685 |
if (LFO3Sync) lfo3ctrl |= 0x20; // bit 5 |
1686 |
if (InvertAttenuationController) lfo3ctrl |= 0x80; // bit 7 |
1687 |
if (VCFType == vcf_type_lowpassturbo) lfo3ctrl |= 0x40; // bit 6 |
1688 |
pData[112] = lfo3ctrl; |
1689 |
} |
1690 |
|
1691 |
const uint8_t attenctl = EncodeLeverageController(AttenuationController); |
1692 |
pData[113] = attenctl; |
1693 |
|
1694 |
{ |
1695 |
uint8_t lfo2ctrl = LFO2Controller & 0x07; // lower 3 bits |
1696 |
if (LFO2FlipPhase) lfo2ctrl |= 0x80; // bit 7 |
1697 |
if (LFO2Sync) lfo2ctrl |= 0x20; // bit 5 |
1698 |
if (VCFResonanceController != vcf_res_ctrl_none) lfo2ctrl |= 0x40; // bit 6 |
1699 |
pData[114] = lfo2ctrl; |
1700 |
} |
1701 |
|
1702 |
{ |
1703 |
uint8_t lfo1ctrl = LFO1Controller & 0x07; // lower 3 bits |
1704 |
if (LFO1FlipPhase) lfo1ctrl |= 0x80; // bit 7 |
1705 |
if (LFO1Sync) lfo1ctrl |= 0x40; // bit 6 |
1706 |
if (VCFResonanceController != vcf_res_ctrl_none) |
1707 |
lfo1ctrl |= GIG_VCF_RESONANCE_CTRL_ENCODE(VCFResonanceController); |
1708 |
pData[115] = lfo1ctrl; |
1709 |
} |
1710 |
|
1711 |
const uint16_t eg3depth = (EG3Depth >= 0) ? EG3Depth |
1712 |
: uint16_t(((-EG3Depth) - 1) ^ 0xffff); /* binary complementary for negatives */ |
1713 |
pData[116] = eg3depth; |
1714 |
|
1715 |
// next 2 bytes unknown |
1716 |
|
1717 |
const uint8_t channeloffset = ChannelOffset * 4; |
1718 |
pData[120] = channeloffset; |
1719 |
|
1720 |
{ |
1721 |
uint8_t regoptions = 0; |
1722 |
if (MSDecode) regoptions |= 0x01; // bit 0 |
1723 |
if (SustainDefeat) regoptions |= 0x02; // bit 1 |
1724 |
pData[121] = regoptions; |
1725 |
} |
1726 |
|
1727 |
// next 2 bytes unknown |
1728 |
|
1729 |
pData[124] = VelocityUpperLimit; |
1730 |
|
1731 |
// next 3 bytes unknown |
1732 |
|
1733 |
pData[128] = ReleaseTriggerDecay; |
1734 |
|
1735 |
// next 2 bytes unknown |
1736 |
|
1737 |
const uint8_t eg1hold = (EG1Hold) ? 0x80 : 0x00; // bit 7 |
1738 |
pData[131] = eg1hold; |
1739 |
|
1740 |
const uint8_t vcfcutoff = (VCFEnabled) ? 0x80 : 0x00 | /* bit 7 */ |
1741 |
(VCFCutoff & 0x7f); /* lower 7 bits */ |
1742 |
pData[132] = vcfcutoff; |
1743 |
|
1744 |
pData[133] = VCFCutoffController; |
1745 |
|
1746 |
const uint8_t vcfvelscale = (VCFCutoffControllerInvert) ? 0x80 : 0x00 | /* bit 7 */ |
1747 |
(VCFVelocityScale & 0x7f); /* lower 7 bits */ |
1748 |
pData[134] = vcfvelscale; |
1749 |
|
1750 |
// next byte unknown |
1751 |
|
1752 |
const uint8_t vcfresonance = (VCFResonanceDynamic) ? 0x00 : 0x80 | /* bit 7 */ |
1753 |
(VCFResonance & 0x7f); /* lower 7 bits */ |
1754 |
pData[136] = vcfresonance; |
1755 |
|
1756 |
const uint8_t vcfbreakpoint = (VCFKeyboardTracking) ? 0x80 : 0x00 | /* bit 7 */ |
1757 |
(VCFKeyboardTrackingBreakpoint & 0x7f); /* lower 7 bits */ |
1758 |
pData[137] = vcfbreakpoint; |
1759 |
|
1760 |
const uint8_t vcfvelocity = VCFVelocityDynamicRange % 5 | |
1761 |
VCFVelocityCurve * 5; |
1762 |
pData[138] = vcfvelocity; |
1763 |
|
1764 |
const uint8_t vcftype = (VCFType == vcf_type_lowpassturbo) ? vcf_type_lowpass : VCFType; |
1765 |
pData[139] = vcftype; |
1766 |
|
1767 |
if (chunksize >= 148) { |
1768 |
memcpy(&pData[140], DimensionUpperLimits, 8); |
1769 |
} |
1770 |
} |
1771 |
|
1772 |
// get the corresponding velocity table from the table map or create & calculate that table if it doesn't exist yet |
1773 |
double* DimensionRegion::GetVelocityTable(curve_type_t curveType, uint8_t depth, uint8_t scaling) |
1774 |
{ |
1775 |
double* table; |
1776 |
uint32_t tableKey = (curveType<<16) | (depth<<8) | scaling; |
1777 |
if (pVelocityTables->count(tableKey)) { // if key exists |
1778 |
table = (*pVelocityTables)[tableKey]; |
1779 |
} |
1780 |
else { |
1781 |
table = CreateVelocityTable(curveType, depth, scaling); |
1782 |
(*pVelocityTables)[tableKey] = table; // put the new table into the tables map |
1783 |
} |
1784 |
return table; |
1785 |
} |
1786 |
|
1787 |
leverage_ctrl_t DimensionRegion::DecodeLeverageController(_lev_ctrl_t EncodedController) { |
1788 |
leverage_ctrl_t decodedcontroller; |
1789 |
switch (EncodedController) { |
1790 |
// special controller |
1791 |
case _lev_ctrl_none: |
1792 |
decodedcontroller.type = leverage_ctrl_t::type_none; |
1793 |
decodedcontroller.controller_number = 0; |
1794 |
break; |
1795 |
case _lev_ctrl_velocity: |
1796 |
decodedcontroller.type = leverage_ctrl_t::type_velocity; |
1797 |
decodedcontroller.controller_number = 0; |
1798 |
break; |
1799 |
case _lev_ctrl_channelaftertouch: |
1800 |
decodedcontroller.type = leverage_ctrl_t::type_channelaftertouch; |
1801 |
decodedcontroller.controller_number = 0; |
1802 |
break; |
1803 |
|
1804 |
// ordinary MIDI control change controller |
1805 |
case _lev_ctrl_modwheel: |
1806 |
decodedcontroller.type = leverage_ctrl_t::type_controlchange; |
1807 |
decodedcontroller.controller_number = 1; |
1808 |
break; |
1809 |
case _lev_ctrl_breath: |
1810 |
decodedcontroller.type = leverage_ctrl_t::type_controlchange; |
1811 |
decodedcontroller.controller_number = 2; |
1812 |
break; |
1813 |
case _lev_ctrl_foot: |
1814 |
decodedcontroller.type = leverage_ctrl_t::type_controlchange; |
1815 |
decodedcontroller.controller_number = 4; |
1816 |
break; |
1817 |
case _lev_ctrl_effect1: |
1818 |
decodedcontroller.type = leverage_ctrl_t::type_controlchange; |
1819 |
decodedcontroller.controller_number = 12; |
1820 |
break; |
1821 |
case _lev_ctrl_effect2: |
1822 |
decodedcontroller.type = leverage_ctrl_t::type_controlchange; |
1823 |
decodedcontroller.controller_number = 13; |
1824 |
break; |
1825 |
case _lev_ctrl_genpurpose1: |
1826 |
decodedcontroller.type = leverage_ctrl_t::type_controlchange; |
1827 |
decodedcontroller.controller_number = 16; |
1828 |
break; |
1829 |
case _lev_ctrl_genpurpose2: |
1830 |
decodedcontroller.type = leverage_ctrl_t::type_controlchange; |
1831 |
decodedcontroller.controller_number = 17; |
1832 |
break; |
1833 |
case _lev_ctrl_genpurpose3: |
1834 |
decodedcontroller.type = leverage_ctrl_t::type_controlchange; |
1835 |
decodedcontroller.controller_number = 18; |
1836 |
break; |
1837 |
case _lev_ctrl_genpurpose4: |
1838 |
decodedcontroller.type = leverage_ctrl_t::type_controlchange; |
1839 |
decodedcontroller.controller_number = 19; |
1840 |
break; |
1841 |
case _lev_ctrl_portamentotime: |
1842 |
decodedcontroller.type = leverage_ctrl_t::type_controlchange; |
1843 |
decodedcontroller.controller_number = 5; |
1844 |
break; |
1845 |
case _lev_ctrl_sustainpedal: |
1846 |
decodedcontroller.type = leverage_ctrl_t::type_controlchange; |
1847 |
decodedcontroller.controller_number = 64; |
1848 |
break; |
1849 |
case _lev_ctrl_portamento: |
1850 |
decodedcontroller.type = leverage_ctrl_t::type_controlchange; |
1851 |
decodedcontroller.controller_number = 65; |
1852 |
break; |
1853 |
case _lev_ctrl_sostenutopedal: |
1854 |
decodedcontroller.type = leverage_ctrl_t::type_controlchange; |
1855 |
decodedcontroller.controller_number = 66; |
1856 |
break; |
1857 |
case _lev_ctrl_softpedal: |
1858 |
decodedcontroller.type = leverage_ctrl_t::type_controlchange; |
1859 |
decodedcontroller.controller_number = 67; |
1860 |
break; |
1861 |
case _lev_ctrl_genpurpose5: |
1862 |
decodedcontroller.type = leverage_ctrl_t::type_controlchange; |
1863 |
decodedcontroller.controller_number = 80; |
1864 |
break; |
1865 |
case _lev_ctrl_genpurpose6: |
1866 |
decodedcontroller.type = leverage_ctrl_t::type_controlchange; |
1867 |
decodedcontroller.controller_number = 81; |
1868 |
break; |
1869 |
case _lev_ctrl_genpurpose7: |
1870 |
decodedcontroller.type = leverage_ctrl_t::type_controlchange; |
1871 |
decodedcontroller.controller_number = 82; |
1872 |
break; |
1873 |
case _lev_ctrl_genpurpose8: |
1874 |
decodedcontroller.type = leverage_ctrl_t::type_controlchange; |
1875 |
decodedcontroller.controller_number = 83; |
1876 |
break; |
1877 |
case _lev_ctrl_effect1depth: |
1878 |
decodedcontroller.type = leverage_ctrl_t::type_controlchange; |
1879 |
decodedcontroller.controller_number = 91; |
1880 |
break; |
1881 |
case _lev_ctrl_effect2depth: |
1882 |
decodedcontroller.type = leverage_ctrl_t::type_controlchange; |
1883 |
decodedcontroller.controller_number = 92; |
1884 |
break; |
1885 |
case _lev_ctrl_effect3depth: |
1886 |
decodedcontroller.type = leverage_ctrl_t::type_controlchange; |
1887 |
decodedcontroller.controller_number = 93; |
1888 |
break; |
1889 |
case _lev_ctrl_effect4depth: |
1890 |
decodedcontroller.type = leverage_ctrl_t::type_controlchange; |
1891 |
decodedcontroller.controller_number = 94; |
1892 |
break; |
1893 |
case _lev_ctrl_effect5depth: |
1894 |
decodedcontroller.type = leverage_ctrl_t::type_controlchange; |
1895 |
decodedcontroller.controller_number = 95; |
1896 |
break; |
1897 |
|
1898 |
// unknown controller type |
1899 |
default: |
1900 |
throw gig::Exception("Unknown leverage controller type."); |
1901 |
} |
1902 |
return decodedcontroller; |
1903 |
} |
1904 |
|
1905 |
DimensionRegion::_lev_ctrl_t DimensionRegion::EncodeLeverageController(leverage_ctrl_t DecodedController) { |
1906 |
_lev_ctrl_t encodedcontroller; |
1907 |
switch (DecodedController.type) { |
1908 |
// special controller |
1909 |
case leverage_ctrl_t::type_none: |
1910 |
encodedcontroller = _lev_ctrl_none; |
1911 |
break; |
1912 |
case leverage_ctrl_t::type_velocity: |
1913 |
encodedcontroller = _lev_ctrl_velocity; |
1914 |
break; |
1915 |
case leverage_ctrl_t::type_channelaftertouch: |
1916 |
encodedcontroller = _lev_ctrl_channelaftertouch; |
1917 |
break; |
1918 |
|
1919 |
// ordinary MIDI control change controller |
1920 |
case leverage_ctrl_t::type_controlchange: |
1921 |
switch (DecodedController.controller_number) { |
1922 |
case 1: |
1923 |
encodedcontroller = _lev_ctrl_modwheel; |
1924 |
break; |
1925 |
case 2: |
1926 |
encodedcontroller = _lev_ctrl_breath; |
1927 |
break; |
1928 |
case 4: |
1929 |
encodedcontroller = _lev_ctrl_foot; |
1930 |
break; |
1931 |
case 12: |
1932 |
encodedcontroller = _lev_ctrl_effect1; |
1933 |
break; |
1934 |
case 13: |
1935 |
encodedcontroller = _lev_ctrl_effect2; |
1936 |
break; |
1937 |
case 16: |
1938 |
encodedcontroller = _lev_ctrl_genpurpose1; |
1939 |
break; |
1940 |
case 17: |
1941 |
encodedcontroller = _lev_ctrl_genpurpose2; |
1942 |
break; |
1943 |
case 18: |
1944 |
encodedcontroller = _lev_ctrl_genpurpose3; |
1945 |
break; |
1946 |
case 19: |
1947 |
encodedcontroller = _lev_ctrl_genpurpose4; |
1948 |
break; |
1949 |
case 5: |
1950 |
encodedcontroller = _lev_ctrl_portamentotime; |
1951 |
break; |
1952 |
case 64: |
1953 |
encodedcontroller = _lev_ctrl_sustainpedal; |
1954 |
break; |
1955 |
case 65: |
1956 |
encodedcontroller = _lev_ctrl_portamento; |
1957 |
break; |
1958 |
case 66: |
1959 |
encodedcontroller = _lev_ctrl_sostenutopedal; |
1960 |
break; |
1961 |
case 67: |
1962 |
encodedcontroller = _lev_ctrl_softpedal; |
1963 |
break; |
1964 |
case 80: |
1965 |
encodedcontroller = _lev_ctrl_genpurpose5; |
1966 |
break; |
1967 |
case 81: |
1968 |
encodedcontroller = _lev_ctrl_genpurpose6; |
1969 |
break; |
1970 |
case 82: |
1971 |
encodedcontroller = _lev_ctrl_genpurpose7; |
1972 |
break; |
1973 |
case 83: |
1974 |
encodedcontroller = _lev_ctrl_genpurpose8; |
1975 |
break; |
1976 |
case 91: |
1977 |
encodedcontroller = _lev_ctrl_effect1depth; |
1978 |
break; |
1979 |
case 92: |
1980 |
encodedcontroller = _lev_ctrl_effect2depth; |
1981 |
break; |
1982 |
case 93: |
1983 |
encodedcontroller = _lev_ctrl_effect3depth; |
1984 |
break; |
1985 |
case 94: |
1986 |
encodedcontroller = _lev_ctrl_effect4depth; |
1987 |
break; |
1988 |
case 95: |
1989 |
encodedcontroller = _lev_ctrl_effect5depth; |
1990 |
break; |
1991 |
default: |
1992 |
throw gig::Exception("leverage controller number is not supported by the gig format"); |
1993 |
} |
1994 |
default: |
1995 |
throw gig::Exception("Unknown leverage controller type."); |
1996 |
} |
1997 |
return encodedcontroller; |
1998 |
} |
1999 |
|
2000 |
DimensionRegion::~DimensionRegion() { |
2001 |
Instances--; |
2002 |
if (!Instances) { |
2003 |
// delete the velocity->volume tables |
2004 |
VelocityTableMap::iterator iter; |
2005 |
for (iter = pVelocityTables->begin(); iter != pVelocityTables->end(); iter++) { |
2006 |
double* pTable = iter->second; |
2007 |
if (pTable) delete[] pTable; |
2008 |
} |
2009 |
pVelocityTables->clear(); |
2010 |
delete pVelocityTables; |
2011 |
pVelocityTables = NULL; |
2012 |
} |
2013 |
if (VelocityTable) delete[] VelocityTable; |
2014 |
} |
2015 |
|
2016 |
/** |
2017 |
* Returns the correct amplitude factor for the given \a MIDIKeyVelocity. |
2018 |
* All involved parameters (VelocityResponseCurve, VelocityResponseDepth |
2019 |
* and VelocityResponseCurveScaling) involved are taken into account to |
2020 |
* calculate the amplitude factor. Use this method when a key was |
2021 |
* triggered to get the volume with which the sample should be played |
2022 |
* back. |
2023 |
* |
2024 |
* @param MIDIKeyVelocity MIDI velocity value of the triggered key (between 0 and 127) |
2025 |
* @returns amplitude factor (between 0.0 and 1.0) |
2026 |
*/ |
2027 |
double DimensionRegion::GetVelocityAttenuation(uint8_t MIDIKeyVelocity) { |
2028 |
return pVelocityAttenuationTable[MIDIKeyVelocity]; |
2029 |
} |
2030 |
|
2031 |
double DimensionRegion::GetVelocityRelease(uint8_t MIDIKeyVelocity) { |
2032 |
return pVelocityReleaseTable[MIDIKeyVelocity]; |
2033 |
} |
2034 |
|
2035 |
double DimensionRegion::GetVelocityCutoff(uint8_t MIDIKeyVelocity) { |
2036 |
return pVelocityCutoffTable[MIDIKeyVelocity]; |
2037 |
} |
2038 |
|
2039 |
double* DimensionRegion::CreateVelocityTable(curve_type_t curveType, uint8_t depth, uint8_t scaling) { |
2040 |
|
2041 |
// line-segment approximations of the 15 velocity curves |
2042 |
|
2043 |
// linear |
2044 |
const int lin0[] = { 1, 1, 127, 127 }; |
2045 |
const int lin1[] = { 1, 21, 127, 127 }; |
2046 |
const int lin2[] = { 1, 45, 127, 127 }; |
2047 |
const int lin3[] = { 1, 74, 127, 127 }; |
2048 |
const int lin4[] = { 1, 127, 127, 127 }; |
2049 |
|
2050 |
// non-linear |
2051 |
const int non0[] = { 1, 4, 24, 5, 57, 17, 92, 57, 122, 127, 127, 127 }; |
2052 |
const int non1[] = { 1, 4, 46, 9, 93, 56, 118, 106, 123, 127, |
2053 |
127, 127 }; |
2054 |
const int non2[] = { 1, 4, 46, 9, 57, 20, 102, 107, 107, 127, |
2055 |
127, 127 }; |
2056 |
const int non3[] = { 1, 15, 10, 19, 67, 73, 80, 80, 90, 98, 98, 127, |
2057 |
127, 127 }; |
2058 |
const int non4[] = { 1, 25, 33, 57, 82, 81, 92, 127, 127, 127 }; |
2059 |
|
2060 |
// special |
2061 |
const int spe0[] = { 1, 2, 76, 10, 90, 15, 95, 20, 99, 28, 103, 44, |
2062 |
113, 127, 127, 127 }; |
2063 |
const int spe1[] = { 1, 2, 27, 5, 67, 18, 89, 29, 95, 35, 107, 67, |
2064 |
118, 127, 127, 127 }; |
2065 |
const int spe2[] = { 1, 1, 33, 1, 53, 5, 61, 13, 69, 32, 79, 74, |
2066 |
85, 90, 91, 127, 127, 127 }; |
2067 |
const int spe3[] = { 1, 32, 28, 35, 66, 48, 89, 59, 95, 65, 99, 73, |
2068 |
117, 127, 127, 127 }; |
2069 |
const int spe4[] = { 1, 4, 23, 5, 49, 13, 57, 17, 92, 57, 122, 127, |
2070 |
127, 127 }; |
2071 |
|
2072 |
// this is only used by the VCF velocity curve |
2073 |
const int spe5[] = { 1, 2, 30, 5, 60, 19, 77, 70, 83, 85, 88, 106, |
2074 |
91, 127, 127, 127 }; |
2075 |
|
2076 |
const int* const curves[] = { non0, non1, non2, non3, non4, |
2077 |
lin0, lin1, lin2, lin3, lin4, |
2078 |
spe0, spe1, spe2, spe3, spe4, spe5 }; |
2079 |
|
2080 |
double* const table = new double[128]; |
2081 |
|
2082 |
const int* curve = curves[curveType * 5 + depth]; |
2083 |
const int s = scaling == 0 ? 20 : scaling; // 0 or 20 means no scaling |
2084 |
|
2085 |
table[0] = 0; |
2086 |
for (int x = 1 ; x < 128 ; x++) { |
2087 |
|
2088 |
if (x > curve[2]) curve += 2; |
2089 |
double y = curve[1] + (x - curve[0]) * |
2090 |
(double(curve[3] - curve[1]) / (curve[2] - curve[0])); |
2091 |
y = y / 127; |
2092 |
|
2093 |
// Scale up for s > 20, down for s < 20. When |
2094 |
// down-scaling, the curve still ends at 1.0. |
2095 |
if (s < 20 && y >= 0.5) |
2096 |
y = y / ((2 - 40.0 / s) * y + 40.0 / s - 1); |
2097 |
else |
2098 |
y = y * (s / 20.0); |
2099 |
if (y > 1) y = 1; |
2100 |
|
2101 |
table[x] = y; |
2102 |
} |
2103 |
return table; |
2104 |
} |
2105 |
|
2106 |
|
2107 |
// *************** Region *************** |
2108 |
// * |
2109 |
|
2110 |
Region::Region(Instrument* pInstrument, RIFF::List* rgnList) : DLS::Region((DLS::Instrument*) pInstrument, rgnList) { |
2111 |
// Initialization |
2112 |
Dimensions = 0; |
2113 |
for (int i = 0; i < 256; i++) { |
2114 |
pDimensionRegions[i] = NULL; |
2115 |
} |
2116 |
Layers = 1; |
2117 |
File* file = (File*) GetParent()->GetParent(); |
2118 |
int dimensionBits = (file->pVersion && file->pVersion->major == 3) ? 8 : 5; |
2119 |
|
2120 |
// Actual Loading |
2121 |
|
2122 |
LoadDimensionRegions(rgnList); |
2123 |
|
2124 |
RIFF::Chunk* _3lnk = rgnList->GetSubChunk(CHUNK_ID_3LNK); |
2125 |
if (_3lnk) { |
2126 |
DimensionRegions = _3lnk->ReadUint32(); |
2127 |
for (int i = 0; i < dimensionBits; i++) { |
2128 |
dimension_t dimension = static_cast<dimension_t>(_3lnk->ReadUint8()); |
2129 |
uint8_t bits = _3lnk->ReadUint8(); |
2130 |
_3lnk->ReadUint8(); // probably the position of the dimension |
2131 |
_3lnk->ReadUint8(); // unknown |
2132 |
uint8_t zones = _3lnk->ReadUint8(); // new for v3: number of zones doesn't have to be == pow(2,bits) |
2133 |
if (dimension == dimension_none) { // inactive dimension |
2134 |
pDimensionDefinitions[i].dimension = dimension_none; |
2135 |
pDimensionDefinitions[i].bits = 0; |
2136 |
pDimensionDefinitions[i].zones = 0; |
2137 |
pDimensionDefinitions[i].split_type = split_type_bit; |
2138 |
pDimensionDefinitions[i].zone_size = 0; |
2139 |
} |
2140 |
else { // active dimension |
2141 |
pDimensionDefinitions[i].dimension = dimension; |
2142 |
pDimensionDefinitions[i].bits = bits; |
2143 |
pDimensionDefinitions[i].zones = zones ? zones : 0x01 << bits; // = pow(2,bits) |
2144 |
pDimensionDefinitions[i].split_type = __resolveSplitType(dimension); |
2145 |
pDimensionDefinitions[i].zone_size = __resolveZoneSize(pDimensionDefinitions[i]); |
2146 |
Dimensions++; |
2147 |
|
2148 |
// if this is a layer dimension, remember the amount of layers |
2149 |
if (dimension == dimension_layer) Layers = pDimensionDefinitions[i].zones; |
2150 |
} |
2151 |
_3lnk->SetPos(3, RIFF::stream_curpos); // jump forward to next dimension definition |
2152 |
} |
2153 |
for (int i = dimensionBits ; i < 8 ; i++) pDimensionDefinitions[i].bits = 0; |
2154 |
|
2155 |
// if there's a velocity dimension and custom velocity zone splits are used, |
2156 |
// update the VelocityTables in the dimension regions |
2157 |
UpdateVelocityTable(); |
2158 |
|
2159 |
// jump to start of the wave pool indices (if not already there) |
2160 |
if (file->pVersion && file->pVersion->major == 3) |
2161 |
_3lnk->SetPos(68); // version 3 has a different 3lnk structure |
2162 |
else |
2163 |
_3lnk->SetPos(44); |
2164 |
|
2165 |
// load sample references |
2166 |
for (uint i = 0; i < DimensionRegions; i++) { |
2167 |
uint32_t wavepoolindex = _3lnk->ReadUint32(); |
2168 |
if (file->pWavePoolTable) pDimensionRegions[i]->pSample = GetSampleFromWavePool(wavepoolindex); |
2169 |
} |
2170 |
GetSample(); // load global region sample reference |
2171 |
} else { |
2172 |
DimensionRegions = 0; |
2173 |
} |
2174 |
|
2175 |
// make sure there is at least one dimension region |
2176 |
if (!DimensionRegions) { |
2177 |
RIFF::List* _3prg = rgnList->GetSubList(LIST_TYPE_3PRG); |
2178 |
if (!_3prg) _3prg = rgnList->AddSubList(LIST_TYPE_3PRG); |
2179 |
RIFF::List* _3ewl = _3prg->AddSubList(LIST_TYPE_3EWL); |
2180 |
pDimensionRegions[0] = new DimensionRegion(_3ewl); |
2181 |
DimensionRegions = 1; |
2182 |
} |
2183 |
} |
2184 |
|
2185 |
/** |
2186 |
* Apply Region settings and all its DimensionRegions to the respective |
2187 |
* RIFF chunks. You have to call File::Save() to make changes persistent. |
2188 |
* |
2189 |
* Usually there is absolutely no need to call this method explicitly. |
2190 |
* It will be called automatically when File::Save() was called. |
2191 |
* |
2192 |
* @throws gig::Exception if samples cannot be dereferenced |
2193 |
*/ |
2194 |
void Region::UpdateChunks() { |
2195 |
// in the gig format we don't care about the Region's sample reference |
2196 |
// but we still have to provide some existing one to not corrupt the |
2197 |
// file, so to avoid the latter we simply always assign the sample of |
2198 |
// the first dimension region of this region |
2199 |
pSample = pDimensionRegions[0]->pSample; |
2200 |
|
2201 |
// first update base class's chunks |
2202 |
DLS::Region::UpdateChunks(); |
2203 |
|
2204 |
// update dimension region's chunks |
2205 |
for (int i = 0; i < DimensionRegions; i++) { |
2206 |
pDimensionRegions[i]->UpdateChunks(); |
2207 |
} |
2208 |
|
2209 |
File* pFile = (File*) GetParent()->GetParent(); |
2210 |
const int iMaxDimensions = (pFile->pVersion && pFile->pVersion->major == 3) ? 8 : 5; |
2211 |
const int iMaxDimensionRegions = (pFile->pVersion && pFile->pVersion->major == 3) ? 256 : 32; |
2212 |
|
2213 |
// make sure '3lnk' chunk exists |
2214 |
RIFF::Chunk* _3lnk = pCkRegion->GetSubChunk(CHUNK_ID_3LNK); |
2215 |
if (!_3lnk) { |
2216 |
const int _3lnkChunkSize = (pFile->pVersion && pFile->pVersion->major == 3) ? 1092 : 172; |
2217 |
_3lnk = pCkRegion->AddSubChunk(CHUNK_ID_3LNK, _3lnkChunkSize); |
2218 |
} |
2219 |
|
2220 |
// update dimension definitions in '3lnk' chunk |
2221 |
uint8_t* pData = (uint8_t*) _3lnk->LoadChunkData(); |
2222 |
store32(&pData[0], DimensionRegions); |
2223 |
for (int i = 0; i < iMaxDimensions; i++) { |
2224 |
pData[4 + i * 8] = (uint8_t) pDimensionDefinitions[i].dimension; |
2225 |
pData[5 + i * 8] = pDimensionDefinitions[i].bits; |
2226 |
// next 2 bytes unknown |
2227 |
pData[8 + i * 8] = pDimensionDefinitions[i].zones; |
2228 |
// next 3 bytes unknown |
2229 |
} |
2230 |
|
2231 |
// update wave pool table in '3lnk' chunk |
2232 |
const int iWavePoolOffset = (pFile->pVersion && pFile->pVersion->major == 3) ? 68 : 44; |
2233 |
for (uint i = 0; i < iMaxDimensionRegions; i++) { |
2234 |
int iWaveIndex = -1; |
2235 |
if (i < DimensionRegions) { |
2236 |
if (!pFile->pSamples || !pFile->pSamples->size()) throw gig::Exception("Could not update gig::Region, there are no samples"); |
2237 |
File::SampleList::iterator iter = pFile->pSamples->begin(); |
2238 |
File::SampleList::iterator end = pFile->pSamples->end(); |
2239 |
for (int index = 0; iter != end; ++iter, ++index) { |
2240 |
if (*iter == pDimensionRegions[i]->pSample) { |
2241 |
iWaveIndex = index; |
2242 |
break; |
2243 |
} |
2244 |
} |
2245 |
if (iWaveIndex < 0) throw gig::Exception("Could not update gig::Region, could not find DimensionRegion's sample"); |
2246 |
} |
2247 |
store32(&pData[iWavePoolOffset + i * 4], iWaveIndex); |
2248 |
} |
2249 |
} |
2250 |
|
2251 |
void Region::LoadDimensionRegions(RIFF::List* rgn) { |
2252 |
RIFF::List* _3prg = rgn->GetSubList(LIST_TYPE_3PRG); |
2253 |
if (_3prg) { |
2254 |
int dimensionRegionNr = 0; |
2255 |
RIFF::List* _3ewl = _3prg->GetFirstSubList(); |
2256 |
while (_3ewl) { |
2257 |
if (_3ewl->GetListType() == LIST_TYPE_3EWL) { |
2258 |
pDimensionRegions[dimensionRegionNr] = new DimensionRegion(_3ewl); |
2259 |
dimensionRegionNr++; |
2260 |
} |
2261 |
_3ewl = _3prg->GetNextSubList(); |
2262 |
} |
2263 |
if (dimensionRegionNr == 0) throw gig::Exception("No dimension region found."); |
2264 |
} |
2265 |
} |
2266 |
|
2267 |
void Region::UpdateVelocityTable() { |
2268 |
// get velocity dimension's index |
2269 |
int veldim = -1; |
2270 |
for (int i = 0 ; i < Dimensions ; i++) { |
2271 |
if (pDimensionDefinitions[i].dimension == gig::dimension_velocity) { |
2272 |
veldim = i; |
2273 |
break; |
2274 |
} |
2275 |
} |
2276 |
if (veldim == -1) return; |
2277 |
|
2278 |
int step = 1; |
2279 |
for (int i = 0 ; i < veldim ; i++) step <<= pDimensionDefinitions[i].bits; |
2280 |
int skipveldim = (step << pDimensionDefinitions[veldim].bits) - step; |
2281 |
int end = step * pDimensionDefinitions[veldim].zones; |
2282 |
|
2283 |
// loop through all dimension regions for all dimensions except the velocity dimension |
2284 |
int dim[8] = { 0 }; |
2285 |
for (int i = 0 ; i < DimensionRegions ; i++) { |
2286 |
|
2287 |
if (pDimensionRegions[i]->DimensionUpperLimits[veldim] || |
2288 |
pDimensionRegions[i]->VelocityUpperLimit) { |
2289 |
// create the velocity table |
2290 |
uint8_t* table = pDimensionRegions[i]->VelocityTable; |
2291 |
if (!table) { |
2292 |
table = new uint8_t[128]; |
2293 |
pDimensionRegions[i]->VelocityTable = table; |
2294 |
} |
2295 |
int tableidx = 0; |
2296 |
int velocityZone = 0; |
2297 |
if (pDimensionRegions[i]->DimensionUpperLimits[veldim]) { // gig3 |
2298 |
for (int k = i ; k < end ; k += step) { |
2299 |
DimensionRegion *d = pDimensionRegions[k]; |
2300 |
for (; tableidx <= d->DimensionUpperLimits[veldim] ; tableidx++) table[tableidx] = velocityZone; |
2301 |
velocityZone++; |
2302 |
} |
2303 |
} else { // gig2 |
2304 |
for (int k = i ; k < end ; k += step) { |
2305 |
DimensionRegion *d = pDimensionRegions[k]; |
2306 |
for (; tableidx <= d->VelocityUpperLimit ; tableidx++) table[tableidx] = velocityZone; |
2307 |
velocityZone++; |
2308 |
} |
2309 |
} |
2310 |
} else { |
2311 |
if (pDimensionRegions[i]->VelocityTable) { |
2312 |
delete[] pDimensionRegions[i]->VelocityTable; |
2313 |
pDimensionRegions[i]->VelocityTable = 0; |
2314 |
} |
2315 |
} |
2316 |
|
2317 |
int j; |
2318 |
int shift = 0; |
2319 |
for (j = 0 ; j < Dimensions ; j++) { |
2320 |
if (j == veldim) i += skipveldim; // skip velocity dimension |
2321 |
else { |
2322 |
dim[j]++; |
2323 |
if (dim[j] < pDimensionDefinitions[j].zones) break; |
2324 |
else { |
2325 |
// skip unused dimension regions |
2326 |
dim[j] = 0; |
2327 |
i += ((1 << pDimensionDefinitions[j].bits) - |
2328 |
pDimensionDefinitions[j].zones) << shift; |
2329 |
} |
2330 |
} |
2331 |
shift += pDimensionDefinitions[j].bits; |
2332 |
} |
2333 |
if (j == Dimensions) break; |
2334 |
} |
2335 |
} |
2336 |
|
2337 |
/** @brief Einstein would have dreamed of it - create a new dimension. |
2338 |
* |
2339 |
* Creates a new dimension with the dimension definition given by |
2340 |
* \a pDimDef. The appropriate amount of DimensionRegions will be created. |
2341 |
* There is a hard limit of dimensions and total amount of "bits" all |
2342 |
* dimensions can have. This limit is dependant to what gig file format |
2343 |
* version this file refers to. The gig v2 (and lower) format has a |
2344 |
* dimension limit and total amount of bits limit of 5, whereas the gig v3 |
2345 |
* format has a limit of 8. |
2346 |
* |
2347 |
* @param pDimDef - defintion of the new dimension |
2348 |
* @throws gig::Exception if dimension of the same type exists already |
2349 |
* @throws gig::Exception if amount of dimensions or total amount of |
2350 |
* dimension bits limit is violated |
2351 |
*/ |
2352 |
void Region::AddDimension(dimension_def_t* pDimDef) { |
2353 |
// check if max. amount of dimensions reached |
2354 |
File* file = (File*) GetParent()->GetParent(); |
2355 |
const int iMaxDimensions = (file->pVersion && file->pVersion->major == 3) ? 8 : 5; |
2356 |
if (Dimensions >= iMaxDimensions) |
2357 |
throw gig::Exception("Could not add new dimension, max. amount of " + ToString(iMaxDimensions) + " dimensions already reached"); |
2358 |
// check if max. amount of dimension bits reached |
2359 |
int iCurrentBits = 0; |
2360 |
for (int i = 0; i < Dimensions; i++) |
2361 |
iCurrentBits += pDimensionDefinitions[i].bits; |
2362 |
if (iCurrentBits >= iMaxDimensions) |
2363 |
throw gig::Exception("Could not add new dimension, max. amount of " + ToString(iMaxDimensions) + " dimension bits already reached"); |
2364 |
const int iNewBits = iCurrentBits + pDimDef->bits; |
2365 |
if (iNewBits > iMaxDimensions) |
2366 |
throw gig::Exception("Could not add new dimension, new dimension would exceed max. amount of " + ToString(iMaxDimensions) + " dimension bits"); |
2367 |
// check if there's already a dimensions of the same type |
2368 |
for (int i = 0; i < Dimensions; i++) |
2369 |
if (pDimensionDefinitions[i].dimension == pDimDef->dimension) |
2370 |
throw gig::Exception("Could not add new dimension, there is already a dimension of the same type"); |
2371 |
|
2372 |
// assign definition of new dimension |
2373 |
pDimensionDefinitions[Dimensions] = *pDimDef; |
2374 |
|
2375 |
// auto correct certain dimension definition fields (where possible) |
2376 |
pDimensionDefinitions[Dimensions].split_type = |
2377 |
__resolveSplitType(pDimensionDefinitions[Dimensions].dimension); |
2378 |
pDimensionDefinitions[Dimensions].zone_size = |
2379 |
__resolveZoneSize(pDimensionDefinitions[Dimensions]); |
2380 |
|
2381 |
// create new dimension region(s) for this new dimension |
2382 |
for (int i = 1 << iCurrentBits; i < 1 << iNewBits; i++) { |
2383 |
//TODO: maybe we should copy existing dimension regions if possible instead of simply creating new ones with default values |
2384 |
RIFF::List* pNewDimRgnListChunk = pCkRegion->AddSubList(LIST_TYPE_3EWL); |
2385 |
pDimensionRegions[i] = new DimensionRegion(pNewDimRgnListChunk); |
2386 |
DimensionRegions++; |
2387 |
} |
2388 |
|
2389 |
Dimensions++; |
2390 |
|
2391 |
// if this is a layer dimension, update 'Layers' attribute |
2392 |
if (pDimDef->dimension == dimension_layer) Layers = pDimDef->zones; |
2393 |
|
2394 |
UpdateVelocityTable(); |
2395 |
} |
2396 |
|
2397 |
/** @brief Delete an existing dimension. |
2398 |
* |
2399 |
* Deletes the dimension given by \a pDimDef and deletes all respective |
2400 |
* dimension regions, that is all dimension regions where the dimension's |
2401 |
* bit(s) part is greater than 0. In case of a 'sustain pedal' dimension |
2402 |
* for example this would delete all dimension regions for the case(s) |
2403 |
* where the sustain pedal is pressed down. |
2404 |
* |
2405 |
* @param pDimDef - dimension to delete |
2406 |
* @throws gig::Exception if given dimension cannot be found |
2407 |
*/ |
2408 |
void Region::DeleteDimension(dimension_def_t* pDimDef) { |
2409 |
// get dimension's index |
2410 |
int iDimensionNr = -1; |
2411 |
for (int i = 0; i < Dimensions; i++) { |
2412 |
if (&pDimensionDefinitions[i] == pDimDef) { |
2413 |
iDimensionNr = i; |
2414 |
break; |
2415 |
} |
2416 |
} |
2417 |
if (iDimensionNr < 0) throw gig::Exception("Invalid dimension_def_t pointer"); |
2418 |
|
2419 |
// get amount of bits below the dimension to delete |
2420 |
int iLowerBits = 0; |
2421 |
for (int i = 0; i < iDimensionNr; i++) |
2422 |
iLowerBits += pDimensionDefinitions[i].bits; |
2423 |
|
2424 |
// get amount ot bits above the dimension to delete |
2425 |
int iUpperBits = 0; |
2426 |
for (int i = iDimensionNr + 1; i < Dimensions; i++) |
2427 |
iUpperBits += pDimensionDefinitions[i].bits; |
2428 |
|
2429 |
// delete dimension regions which belong to the given dimension |
2430 |
// (that is where the dimension's bit > 0) |
2431 |
for (int iUpperBit = 0; iUpperBit < 1 << iUpperBits; iUpperBit++) { |
2432 |
for (int iObsoleteBit = 1; iObsoleteBit < 1 << pDimensionDefinitions[iDimensionNr].bits; iObsoleteBit++) { |
2433 |
for (int iLowerBit = 0; iLowerBit < 1 << iLowerBits; iLowerBit++) { |
2434 |
int iToDelete = iUpperBit << (pDimensionDefinitions[iDimensionNr].bits + iLowerBits) | |
2435 |
iObsoleteBit << iLowerBits | |
2436 |
iLowerBit; |
2437 |
delete pDimensionRegions[iToDelete]; |
2438 |
pDimensionRegions[iToDelete] = NULL; |
2439 |
DimensionRegions--; |
2440 |
} |
2441 |
} |
2442 |
} |
2443 |
|
2444 |
// defrag pDimensionRegions array |
2445 |
// (that is remove the NULL spaces within the pDimensionRegions array) |
2446 |
for (int iFrom = 2, iTo = 1; iFrom < 256 && iTo < 256 - 1; iTo++) { |
2447 |
if (!pDimensionRegions[iTo]) { |
2448 |
if (iFrom <= iTo) iFrom = iTo + 1; |
2449 |
while (!pDimensionRegions[iFrom] && iFrom < 256) iFrom++; |
2450 |
if (iFrom < 256 && pDimensionRegions[iFrom]) { |
2451 |
pDimensionRegions[iTo] = pDimensionRegions[iFrom]; |
2452 |
pDimensionRegions[iFrom] = NULL; |
2453 |
} |
2454 |
} |
2455 |
} |
2456 |
|
2457 |
// 'remove' dimension definition |
2458 |
for (int i = iDimensionNr + 1; i < Dimensions; i++) { |
2459 |
pDimensionDefinitions[i - 1] = pDimensionDefinitions[i]; |
2460 |
} |
2461 |
pDimensionDefinitions[Dimensions - 1].dimension = dimension_none; |
2462 |
pDimensionDefinitions[Dimensions - 1].bits = 0; |
2463 |
pDimensionDefinitions[Dimensions - 1].zones = 0; |
2464 |
|
2465 |
Dimensions--; |
2466 |
|
2467 |
// if this was a layer dimension, update 'Layers' attribute |
2468 |
if (pDimDef->dimension == dimension_layer) Layers = 1; |
2469 |
} |
2470 |
|
2471 |
Region::~Region() { |
2472 |
for (int i = 0; i < 256; i++) { |
2473 |
if (pDimensionRegions[i]) delete pDimensionRegions[i]; |
2474 |
} |
2475 |
} |
2476 |
|
2477 |
/** |
2478 |
* Use this method in your audio engine to get the appropriate dimension |
2479 |
* region with it's articulation data for the current situation. Just |
2480 |
* call the method with the current MIDI controller values and you'll get |
2481 |
* the DimensionRegion with the appropriate articulation data for the |
2482 |
* current situation (for this Region of course only). To do that you'll |
2483 |
* first have to look which dimensions with which controllers and in |
2484 |
* which order are defined for this Region when you load the .gig file. |
2485 |
* Special cases are e.g. layer or channel dimensions where you just put |
2486 |
* in the index numbers instead of a MIDI controller value (means 0 for |
2487 |
* left channel, 1 for right channel or 0 for layer 0, 1 for layer 1, |
2488 |
* etc.). |
2489 |
* |
2490 |
* @param DimValues MIDI controller values (0-127) for dimension 0 to 7 |
2491 |
* @returns adress to the DimensionRegion for the given situation |
2492 |
* @see pDimensionDefinitions |
2493 |
* @see Dimensions |
2494 |
*/ |
2495 |
DimensionRegion* Region::GetDimensionRegionByValue(const uint DimValues[8]) { |
2496 |
uint8_t bits; |
2497 |
int veldim = -1; |
2498 |
int velbitpos; |
2499 |
int bitpos = 0; |
2500 |
int dimregidx = 0; |
2501 |
for (uint i = 0; i < Dimensions; i++) { |
2502 |
if (pDimensionDefinitions[i].dimension == dimension_velocity) { |
2503 |
// the velocity dimension must be handled after the other dimensions |
2504 |
veldim = i; |
2505 |
velbitpos = bitpos; |
2506 |
} else { |
2507 |
switch (pDimensionDefinitions[i].split_type) { |
2508 |
case split_type_normal: |
2509 |
if (pDimensionRegions[0]->DimensionUpperLimits[i]) { |
2510 |
// gig3: all normal dimensions (not just the velocity dimension) have custom zone ranges |
2511 |
for (bits = 0 ; bits < pDimensionDefinitions[i].zones ; bits++) { |
2512 |
if (DimValues[i] <= pDimensionRegions[bits << bitpos]->DimensionUpperLimits[i]) break; |
2513 |
} |
2514 |
} else { |
2515 |
// gig2: evenly sized zones |
2516 |
bits = uint8_t(DimValues[i] / pDimensionDefinitions[i].zone_size); |
2517 |
} |
2518 |
break; |
2519 |
case split_type_bit: // the value is already the sought dimension bit number |
2520 |
const uint8_t limiter_mask = (0xff << pDimensionDefinitions[i].bits) ^ 0xff; |
2521 |
bits = DimValues[i] & limiter_mask; // just make sure the value doesn't use more bits than allowed |
2522 |
break; |
2523 |
} |
2524 |
dimregidx |= bits << bitpos; |
2525 |
} |
2526 |
bitpos += pDimensionDefinitions[i].bits; |
2527 |
} |
2528 |
DimensionRegion* dimreg = pDimensionRegions[dimregidx]; |
2529 |
if (veldim != -1) { |
2530 |
// (dimreg is now the dimension region for the lowest velocity) |
2531 |
if (dimreg->VelocityTable) // custom defined zone ranges |
2532 |
bits = dimreg->VelocityTable[DimValues[veldim]]; |
2533 |
else // normal split type |
2534 |
bits = uint8_t(DimValues[veldim] / pDimensionDefinitions[veldim].zone_size); |
2535 |
|
2536 |
dimregidx |= bits << velbitpos; |
2537 |
dimreg = pDimensionRegions[dimregidx]; |
2538 |
} |
2539 |
return dimreg; |
2540 |
} |
2541 |
|
2542 |
/** |
2543 |
* Returns the appropriate DimensionRegion for the given dimension bit |
2544 |
* numbers (zone index). You usually use <i>GetDimensionRegionByValue</i> |
2545 |
* instead of calling this method directly! |
2546 |
* |
2547 |
* @param DimBits Bit numbers for dimension 0 to 7 |
2548 |
* @returns adress to the DimensionRegion for the given dimension |
2549 |
* bit numbers |
2550 |
* @see GetDimensionRegionByValue() |
2551 |
*/ |
2552 |
DimensionRegion* Region::GetDimensionRegionByBit(const uint8_t DimBits[8]) { |
2553 |
return pDimensionRegions[((((((DimBits[7] << pDimensionDefinitions[6].bits | DimBits[6]) |
2554 |
<< pDimensionDefinitions[5].bits | DimBits[5]) |
2555 |
<< pDimensionDefinitions[4].bits | DimBits[4]) |
2556 |
<< pDimensionDefinitions[3].bits | DimBits[3]) |
2557 |
<< pDimensionDefinitions[2].bits | DimBits[2]) |
2558 |
<< pDimensionDefinitions[1].bits | DimBits[1]) |
2559 |
<< pDimensionDefinitions[0].bits | DimBits[0]]; |
2560 |
} |
2561 |
|
2562 |
/** |
2563 |
* Returns pointer address to the Sample referenced with this region. |
2564 |
* This is the global Sample for the entire Region (not sure if this is |
2565 |
* actually used by the Gigasampler engine - I would only use the Sample |
2566 |
* referenced by the appropriate DimensionRegion instead of this sample). |
2567 |
* |
2568 |
* @returns address to Sample or NULL if there is no reference to a |
2569 |
* sample saved in the .gig file |
2570 |
*/ |
2571 |
Sample* Region::GetSample() { |
2572 |
if (pSample) return static_cast<gig::Sample*>(pSample); |
2573 |
else return static_cast<gig::Sample*>(pSample = GetSampleFromWavePool(WavePoolTableIndex)); |
2574 |
} |
2575 |
|
2576 |
Sample* Region::GetSampleFromWavePool(unsigned int WavePoolTableIndex, progress_t* pProgress) { |
2577 |
if ((int32_t)WavePoolTableIndex == -1) return NULL; |
2578 |
File* file = (File*) GetParent()->GetParent(); |
2579 |
if (!file->pWavePoolTable) return NULL; |
2580 |
unsigned long soughtoffset = file->pWavePoolTable[WavePoolTableIndex]; |
2581 |
unsigned long soughtfileno = file->pWavePoolTableHi[WavePoolTableIndex]; |
2582 |
Sample* sample = file->GetFirstSample(pProgress); |
2583 |
while (sample) { |
2584 |
if (sample->ulWavePoolOffset == soughtoffset && |
2585 |
sample->FileNo == soughtfileno) return static_cast<gig::Sample*>(sample); |
2586 |
sample = file->GetNextSample(); |
2587 |
} |
2588 |
return NULL; |
2589 |
} |
2590 |
|
2591 |
|
2592 |
|
2593 |
// *************** Instrument *************** |
2594 |
// * |
2595 |
|
2596 |
Instrument::Instrument(File* pFile, RIFF::List* insList, progress_t* pProgress) : DLS::Instrument((DLS::File*)pFile, insList) { |
2597 |
static const DLS::Info::FixedStringLength fixedStringLengths[] = { |
2598 |
{ CHUNK_ID_INAM, 64 }, |
2599 |
{ CHUNK_ID_ISFT, 12 }, |
2600 |
{ 0, 0 } |
2601 |
}; |
2602 |
pInfo->FixedStringLengths = fixedStringLengths; |
2603 |
|
2604 |
// Initialization |
2605 |
for (int i = 0; i < 128; i++) RegionKeyTable[i] = NULL; |
2606 |
|
2607 |
// Loading |
2608 |
RIFF::List* lart = insList->GetSubList(LIST_TYPE_LART); |
2609 |
if (lart) { |
2610 |
RIFF::Chunk* _3ewg = lart->GetSubChunk(CHUNK_ID_3EWG); |
2611 |
if (_3ewg) { |
2612 |
EffectSend = _3ewg->ReadUint16(); |
2613 |
Attenuation = _3ewg->ReadInt32(); |
2614 |
FineTune = _3ewg->ReadInt16(); |
2615 |
PitchbendRange = _3ewg->ReadInt16(); |
2616 |
uint8_t dimkeystart = _3ewg->ReadUint8(); |
2617 |
PianoReleaseMode = dimkeystart & 0x01; |
2618 |
DimensionKeyRange.low = dimkeystart >> 1; |
2619 |
DimensionKeyRange.high = _3ewg->ReadUint8(); |
2620 |
} |
2621 |
} |
2622 |
|
2623 |
if (!pRegions) pRegions = new RegionList; |
2624 |
RIFF::List* lrgn = insList->GetSubList(LIST_TYPE_LRGN); |
2625 |
if (lrgn) { |
2626 |
RIFF::List* rgn = lrgn->GetFirstSubList(); |
2627 |
while (rgn) { |
2628 |
if (rgn->GetListType() == LIST_TYPE_RGN) { |
2629 |
__notify_progress(pProgress, (float) pRegions->size() / (float) Regions); |
2630 |
pRegions->push_back(new Region(this, rgn)); |
2631 |
} |
2632 |
rgn = lrgn->GetNextSubList(); |
2633 |
} |
2634 |
// Creating Region Key Table for fast lookup |
2635 |
UpdateRegionKeyTable(); |
2636 |
} |
2637 |
|
2638 |
__notify_progress(pProgress, 1.0f); // notify done |
2639 |
} |
2640 |
|
2641 |
void Instrument::UpdateRegionKeyTable() { |
2642 |
RegionList::iterator iter = pRegions->begin(); |
2643 |
RegionList::iterator end = pRegions->end(); |
2644 |
for (; iter != end; ++iter) { |
2645 |
gig::Region* pRegion = static_cast<gig::Region*>(*iter); |
2646 |
for (int iKey = pRegion->KeyRange.low; iKey <= pRegion->KeyRange.high; iKey++) { |
2647 |
RegionKeyTable[iKey] = pRegion; |
2648 |
} |
2649 |
} |
2650 |
} |
2651 |
|
2652 |
Instrument::~Instrument() { |
2653 |
} |
2654 |
|
2655 |
/** |
2656 |
* Apply Instrument with all its Regions to the respective RIFF chunks. |
2657 |
* You have to call File::Save() to make changes persistent. |
2658 |
* |
2659 |
* Usually there is absolutely no need to call this method explicitly. |
2660 |
* It will be called automatically when File::Save() was called. |
2661 |
* |
2662 |
* @throws gig::Exception if samples cannot be dereferenced |
2663 |
*/ |
2664 |
void Instrument::UpdateChunks() { |
2665 |
// first update base classes' chunks |
2666 |
DLS::Instrument::UpdateChunks(); |
2667 |
|
2668 |
// update Regions' chunks |
2669 |
{ |
2670 |
RegionList::iterator iter = pRegions->begin(); |
2671 |
RegionList::iterator end = pRegions->end(); |
2672 |
for (; iter != end; ++iter) |
2673 |
(*iter)->UpdateChunks(); |
2674 |
} |
2675 |
|
2676 |
// make sure 'lart' RIFF list chunk exists |
2677 |
RIFF::List* lart = pCkInstrument->GetSubList(LIST_TYPE_LART); |
2678 |
if (!lart) lart = pCkInstrument->AddSubList(LIST_TYPE_LART); |
2679 |
// make sure '3ewg' RIFF chunk exists |
2680 |
RIFF::Chunk* _3ewg = lart->GetSubChunk(CHUNK_ID_3EWG); |
2681 |
if (!_3ewg) _3ewg = lart->AddSubChunk(CHUNK_ID_3EWG, 12); |
2682 |
// update '3ewg' RIFF chunk |
2683 |
uint8_t* pData = (uint8_t*) _3ewg->LoadChunkData(); |
2684 |
store16(&pData[0], EffectSend); |
2685 |
store32(&pData[2], Attenuation); |
2686 |
store16(&pData[6], FineTune); |
2687 |
store16(&pData[8], PitchbendRange); |
2688 |
const uint8_t dimkeystart = (PianoReleaseMode) ? 0x01 : 0x00 | |
2689 |
DimensionKeyRange.low << 1; |
2690 |
pData[10] = dimkeystart; |
2691 |
pData[11] = DimensionKeyRange.high; |
2692 |
} |
2693 |
|
2694 |
/** |
2695 |
* Returns the appropriate Region for a triggered note. |
2696 |
* |
2697 |
* @param Key MIDI Key number of triggered note / key (0 - 127) |
2698 |
* @returns pointer adress to the appropriate Region or NULL if there |
2699 |
* there is no Region defined for the given \a Key |
2700 |
*/ |
2701 |
Region* Instrument::GetRegion(unsigned int Key) { |
2702 |
if (!pRegions || !pRegions->size() || Key > 127) return NULL; |
2703 |
return RegionKeyTable[Key]; |
2704 |
|
2705 |
/*for (int i = 0; i < Regions; i++) { |
2706 |
if (Key <= pRegions[i]->KeyRange.high && |
2707 |
Key >= pRegions[i]->KeyRange.low) return pRegions[i]; |
2708 |
} |
2709 |
return NULL;*/ |
2710 |
} |
2711 |
|
2712 |
/** |
2713 |
* Returns the first Region of the instrument. You have to call this |
2714 |
* method once before you use GetNextRegion(). |
2715 |
* |
2716 |
* @returns pointer address to first region or NULL if there is none |
2717 |
* @see GetNextRegion() |
2718 |
*/ |
2719 |
Region* Instrument::GetFirstRegion() { |
2720 |
if (!pRegions) return NULL; |
2721 |
RegionsIterator = pRegions->begin(); |
2722 |
return static_cast<gig::Region*>( (RegionsIterator != pRegions->end()) ? *RegionsIterator : NULL ); |
2723 |
} |
2724 |
|
2725 |
/** |
2726 |
* Returns the next Region of the instrument. You have to call |
2727 |
* GetFirstRegion() once before you can use this method. By calling this |
2728 |
* method multiple times it iterates through the available Regions. |
2729 |
* |
2730 |
* @returns pointer address to the next region or NULL if end reached |
2731 |
* @see GetFirstRegion() |
2732 |
*/ |
2733 |
Region* Instrument::GetNextRegion() { |
2734 |
if (!pRegions) return NULL; |
2735 |
RegionsIterator++; |
2736 |
return static_cast<gig::Region*>( (RegionsIterator != pRegions->end()) ? *RegionsIterator : NULL ); |
2737 |
} |
2738 |
|
2739 |
Region* Instrument::AddRegion() { |
2740 |
// create new Region object (and its RIFF chunks) |
2741 |
RIFF::List* lrgn = pCkInstrument->GetSubList(LIST_TYPE_LRGN); |
2742 |
if (!lrgn) lrgn = pCkInstrument->AddSubList(LIST_TYPE_LRGN); |
2743 |
RIFF::List* rgn = lrgn->AddSubList(LIST_TYPE_RGN); |
2744 |
Region* pNewRegion = new Region(this, rgn); |
2745 |
pRegions->push_back(pNewRegion); |
2746 |
Regions = pRegions->size(); |
2747 |
// update Region key table for fast lookup |
2748 |
UpdateRegionKeyTable(); |
2749 |
// done |
2750 |
return pNewRegion; |
2751 |
} |
2752 |
|
2753 |
void Instrument::DeleteRegion(Region* pRegion) { |
2754 |
if (!pRegions) return; |
2755 |
DLS::Instrument::DeleteRegion((DLS::Region*) pRegion); |
2756 |
// update Region key table for fast lookup |
2757 |
UpdateRegionKeyTable(); |
2758 |
} |
2759 |
|
2760 |
|
2761 |
|
2762 |
// *************** Group *************** |
2763 |
// * |
2764 |
|
2765 |
/** @brief Constructor. |
2766 |
* |
2767 |
* @param file - pointer to the gig::File object |
2768 |
* @param ck3gnm - pointer to 3gnm chunk associated with this group or |
2769 |
* NULL if this is a new Group |
2770 |
*/ |
2771 |
Group::Group(File* file, RIFF::Chunk* ck3gnm) { |
2772 |
pFile = file; |
2773 |
pNameChunk = ck3gnm; |
2774 |
::LoadString(pNameChunk, Name); |
2775 |
} |
2776 |
|
2777 |
Group::~Group() { |
2778 |
// remove the chunk associated with this group (if any) |
2779 |
if (pNameChunk) pNameChunk->GetParent()->DeleteSubChunk(pNameChunk); |
2780 |
} |
2781 |
|
2782 |
/** @brief Update chunks with current group settings. |
2783 |
* |
2784 |
* Apply current Group field values to the respective chunks. You have |
2785 |
* to call File::Save() to make changes persistent. |
2786 |
* |
2787 |
* Usually there is absolutely no need to call this method explicitly. |
2788 |
* It will be called automatically when File::Save() was called. |
2789 |
*/ |
2790 |
void Group::UpdateChunks() { |
2791 |
// make sure <3gri> and <3gnl> list chunks exist |
2792 |
RIFF::List* _3gri = pFile->pRIFF->GetSubList(LIST_TYPE_3GRI); |
2793 |
if (!_3gri) _3gri = pFile->pRIFF->AddSubList(LIST_TYPE_3GRI); |
2794 |
RIFF::List* _3gnl = _3gri->GetSubList(LIST_TYPE_3GNL); |
2795 |
if (!_3gnl) _3gnl = pFile->pRIFF->AddSubList(LIST_TYPE_3GNL); |
2796 |
// now store the name of this group as <3gnm> chunk as subchunk of the <3gnl> list chunk |
2797 |
::SaveString(CHUNK_ID_3GNM, pNameChunk, _3gnl, Name, String("Unnamed Group"), true, 64); |
2798 |
} |
2799 |
|
2800 |
/** |
2801 |
* Returns the first Sample of this Group. You have to call this method |
2802 |
* once before you use GetNextSample(). |
2803 |
* |
2804 |
* <b>Notice:</b> this method might block for a long time, in case the |
2805 |
* samples of this .gig file were not scanned yet |
2806 |
* |
2807 |
* @returns pointer address to first Sample or NULL if there is none |
2808 |
* applied to this Group |
2809 |
* @see GetNextSample() |
2810 |
*/ |
2811 |
Sample* Group::GetFirstSample() { |
2812 |
// FIXME: lazy und unsafe implementation, should be an autonomous iterator |
2813 |
for (Sample* pSample = pFile->GetFirstSample(); pSample; pSample = pFile->GetNextSample()) { |
2814 |
if (pSample->GetGroup() == this) return pSample; |
2815 |
} |
2816 |
return NULL; |
2817 |
} |
2818 |
|
2819 |
/** |
2820 |
* Returns the next Sample of the Group. You have to call |
2821 |
* GetFirstSample() once before you can use this method. By calling this |
2822 |
* method multiple times it iterates through the Samples assigned to |
2823 |
* this Group. |
2824 |
* |
2825 |
* @returns pointer address to the next Sample of this Group or NULL if |
2826 |
* end reached |
2827 |
* @see GetFirstSample() |
2828 |
*/ |
2829 |
Sample* Group::GetNextSample() { |
2830 |
// FIXME: lazy und unsafe implementation, should be an autonomous iterator |
2831 |
for (Sample* pSample = pFile->GetNextSample(); pSample; pSample = pFile->GetNextSample()) { |
2832 |
if (pSample->GetGroup() == this) return pSample; |
2833 |
} |
2834 |
return NULL; |
2835 |
} |
2836 |
|
2837 |
/** |
2838 |
* Move Sample given by \a pSample from another Group to this Group. |
2839 |
*/ |
2840 |
void Group::AddSample(Sample* pSample) { |
2841 |
pSample->pGroup = this; |
2842 |
} |
2843 |
|
2844 |
/** |
2845 |
* Move all members of this group to another group (preferably the 1st |
2846 |
* one except this). This method is called explicitly by |
2847 |
* File::DeleteGroup() thus when a Group was deleted. This code was |
2848 |
* intentionally not placed in the destructor! |
2849 |
*/ |
2850 |
void Group::MoveAll() { |
2851 |
// get "that" other group first |
2852 |
Group* pOtherGroup = NULL; |
2853 |
for (pOtherGroup = pFile->GetFirstGroup(); pOtherGroup; pOtherGroup = pFile->GetNextGroup()) { |
2854 |
if (pOtherGroup != this) break; |
2855 |
} |
2856 |
if (!pOtherGroup) throw Exception( |
2857 |
"Could not move samples to another group, since there is no " |
2858 |
"other Group. This is a bug, report it!" |
2859 |
); |
2860 |
// now move all samples of this group to the other group |
2861 |
for (Sample* pSample = GetFirstSample(); pSample; pSample = GetNextSample()) { |
2862 |
pOtherGroup->AddSample(pSample); |
2863 |
} |
2864 |
} |
2865 |
|
2866 |
|
2867 |
|
2868 |
// *************** File *************** |
2869 |
// * |
2870 |
|
2871 |
const DLS::Info::FixedStringLength File::FixedStringLengths[] = { |
2872 |
{ CHUNK_ID_IARL, 256 }, |
2873 |
{ CHUNK_ID_IART, 128 }, |
2874 |
{ CHUNK_ID_ICMS, 128 }, |
2875 |
{ CHUNK_ID_ICMT, 1024 }, |
2876 |
{ CHUNK_ID_ICOP, 128 }, |
2877 |
{ CHUNK_ID_ICRD, 128 }, |
2878 |
{ CHUNK_ID_IENG, 128 }, |
2879 |
{ CHUNK_ID_IGNR, 128 }, |
2880 |
{ CHUNK_ID_IKEY, 128 }, |
2881 |
{ CHUNK_ID_IMED, 128 }, |
2882 |
{ CHUNK_ID_INAM, 128 }, |
2883 |
{ CHUNK_ID_IPRD, 128 }, |
2884 |
{ CHUNK_ID_ISBJ, 128 }, |
2885 |
{ CHUNK_ID_ISFT, 128 }, |
2886 |
{ CHUNK_ID_ISRC, 128 }, |
2887 |
{ CHUNK_ID_ISRF, 128 }, |
2888 |
{ CHUNK_ID_ITCH, 128 }, |
2889 |
{ 0, 0 } |
2890 |
}; |
2891 |
|
2892 |
File::File() : DLS::File() { |
2893 |
pGroups = NULL; |
2894 |
pInfo->FixedStringLengths = FixedStringLengths; |
2895 |
} |
2896 |
|
2897 |
File::File(RIFF::File* pRIFF) : DLS::File(pRIFF) { |
2898 |
pGroups = NULL; |
2899 |
pInfo->FixedStringLengths = FixedStringLengths; |
2900 |
} |
2901 |
|
2902 |
File::~File() { |
2903 |
if (pGroups) { |
2904 |
std::list<Group*>::iterator iter = pGroups->begin(); |
2905 |
std::list<Group*>::iterator end = pGroups->end(); |
2906 |
while (iter != end) { |
2907 |
delete *iter; |
2908 |
++iter; |
2909 |
} |
2910 |
delete pGroups; |
2911 |
} |
2912 |
} |
2913 |
|
2914 |
Sample* File::GetFirstSample(progress_t* pProgress) { |
2915 |
if (!pSamples) LoadSamples(pProgress); |
2916 |
if (!pSamples) return NULL; |
2917 |
SamplesIterator = pSamples->begin(); |
2918 |
return static_cast<gig::Sample*>( (SamplesIterator != pSamples->end()) ? *SamplesIterator : NULL ); |
2919 |
} |
2920 |
|
2921 |
Sample* File::GetNextSample() { |
2922 |
if (!pSamples) return NULL; |
2923 |
SamplesIterator++; |
2924 |
return static_cast<gig::Sample*>( (SamplesIterator != pSamples->end()) ? *SamplesIterator : NULL ); |
2925 |
} |
2926 |
|
2927 |
/** @brief Add a new sample. |
2928 |
* |
2929 |
* This will create a new Sample object for the gig file. You have to |
2930 |
* call Save() to make this persistent to the file. |
2931 |
* |
2932 |
* @returns pointer to new Sample object |
2933 |
*/ |
2934 |
Sample* File::AddSample() { |
2935 |
if (!pSamples) LoadSamples(); |
2936 |
__ensureMandatoryChunksExist(); |
2937 |
RIFF::List* wvpl = pRIFF->GetSubList(LIST_TYPE_WVPL); |
2938 |
// create new Sample object and its respective 'wave' list chunk |
2939 |
RIFF::List* wave = wvpl->AddSubList(LIST_TYPE_WAVE); |
2940 |
Sample* pSample = new Sample(this, wave, 0 /*arbitrary value, we update offsets when we save*/); |
2941 |
pSamples->push_back(pSample); |
2942 |
return pSample; |
2943 |
} |
2944 |
|
2945 |
/** @brief Delete a sample. |
2946 |
* |
2947 |
* This will delete the given Sample object from the gig file. You have |
2948 |
* to call Save() to make this persistent to the file. |
2949 |
* |
2950 |
* @param pSample - sample to delete |
2951 |
* @throws gig::Exception if given sample could not be found |
2952 |
*/ |
2953 |
void File::DeleteSample(Sample* pSample) { |
2954 |
if (!pSamples || !pSamples->size()) throw gig::Exception("Could not delete sample as there are no samples"); |
2955 |
SampleList::iterator iter = find(pSamples->begin(), pSamples->end(), (DLS::Sample*) pSample); |
2956 |
if (iter == pSamples->end()) throw gig::Exception("Could not delete sample, could not find given sample"); |
2957 |
if (SamplesIterator != pSamples->end() && *SamplesIterator == pSample) ++SamplesIterator; // avoid iterator invalidation |
2958 |
pSamples->erase(iter); |
2959 |
delete pSample; |
2960 |
} |
2961 |
|
2962 |
void File::LoadSamples() { |
2963 |
LoadSamples(NULL); |
2964 |
} |
2965 |
|
2966 |
void File::LoadSamples(progress_t* pProgress) { |
2967 |
// Groups must be loaded before samples, because samples will try |
2968 |
// to resolve the group they belong to |
2969 |
if (!pGroups) LoadGroups(); |
2970 |
|
2971 |
if (!pSamples) pSamples = new SampleList; |
2972 |
|
2973 |
RIFF::File* file = pRIFF; |
2974 |
|
2975 |
// just for progress calculation |
2976 |
int iSampleIndex = 0; |
2977 |
int iTotalSamples = WavePoolCount; |
2978 |
|
2979 |
// check if samples should be loaded from extension files |
2980 |
int lastFileNo = 0; |
2981 |
for (int i = 0 ; i < WavePoolCount ; i++) { |
2982 |
if (pWavePoolTableHi[i] > lastFileNo) lastFileNo = pWavePoolTableHi[i]; |
2983 |
} |
2984 |
String name(pRIFF->GetFileName()); |
2985 |
int nameLen = name.length(); |
2986 |
char suffix[6]; |
2987 |
if (nameLen > 4 && name.substr(nameLen - 4) == ".gig") nameLen -= 4; |
2988 |
|
2989 |
for (int fileNo = 0 ; ; ) { |
2990 |
RIFF::List* wvpl = file->GetSubList(LIST_TYPE_WVPL); |
2991 |
if (wvpl) { |
2992 |
unsigned long wvplFileOffset = wvpl->GetFilePos(); |
2993 |
RIFF::List* wave = wvpl->GetFirstSubList(); |
2994 |
while (wave) { |
2995 |
if (wave->GetListType() == LIST_TYPE_WAVE) { |
2996 |
// notify current progress |
2997 |
const float subprogress = (float) iSampleIndex / (float) iTotalSamples; |
2998 |
__notify_progress(pProgress, subprogress); |
2999 |
|
3000 |
unsigned long waveFileOffset = wave->GetFilePos(); |
3001 |
pSamples->push_back(new Sample(this, wave, waveFileOffset - wvplFileOffset, fileNo)); |
3002 |
|
3003 |
iSampleIndex++; |
3004 |
} |
3005 |
wave = wvpl->GetNextSubList(); |
3006 |
} |
3007 |
|
3008 |
if (fileNo == lastFileNo) break; |
3009 |
|
3010 |
// open extension file (*.gx01, *.gx02, ...) |
3011 |
fileNo++; |
3012 |
sprintf(suffix, ".gx%02d", fileNo); |
3013 |
name.replace(nameLen, 5, suffix); |
3014 |
file = new RIFF::File(name); |
3015 |
ExtensionFiles.push_back(file); |
3016 |
} else break; |
3017 |
} |
3018 |
|
3019 |
__notify_progress(pProgress, 1.0); // notify done |
3020 |
} |
3021 |
|
3022 |
Instrument* File::GetFirstInstrument() { |
3023 |
if (!pInstruments) LoadInstruments(); |
3024 |
if (!pInstruments) return NULL; |
3025 |
InstrumentsIterator = pInstruments->begin(); |
3026 |
return static_cast<gig::Instrument*>( (InstrumentsIterator != pInstruments->end()) ? *InstrumentsIterator : NULL ); |
3027 |
} |
3028 |
|
3029 |
Instrument* File::GetNextInstrument() { |
3030 |
if (!pInstruments) return NULL; |
3031 |
InstrumentsIterator++; |
3032 |
return static_cast<gig::Instrument*>( (InstrumentsIterator != pInstruments->end()) ? *InstrumentsIterator : NULL ); |
3033 |
} |
3034 |
|
3035 |
/** |
3036 |
* Returns the instrument with the given index. |
3037 |
* |
3038 |
* @param index - number of the sought instrument (0..n) |
3039 |
* @param pProgress - optional: callback function for progress notification |
3040 |
* @returns sought instrument or NULL if there's no such instrument |
3041 |
*/ |
3042 |
Instrument* File::GetInstrument(uint index, progress_t* pProgress) { |
3043 |
if (!pInstruments) { |
3044 |
// TODO: hack - we simply load ALL samples here, it would have been done in the Region constructor anyway (ATM) |
3045 |
|
3046 |
// sample loading subtask |
3047 |
progress_t subprogress; |
3048 |
__divide_progress(pProgress, &subprogress, 3.0f, 0.0f); // randomly schedule 33% for this subtask |
3049 |
__notify_progress(&subprogress, 0.0f); |
3050 |
GetFirstSample(&subprogress); // now force all samples to be loaded |
3051 |
__notify_progress(&subprogress, 1.0f); |
3052 |
|
3053 |
// instrument loading subtask |
3054 |
if (pProgress && pProgress->callback) { |
3055 |
subprogress.__range_min = subprogress.__range_max; |
3056 |
subprogress.__range_max = pProgress->__range_max; // schedule remaining percentage for this subtask |
3057 |
} |
3058 |
__notify_progress(&subprogress, 0.0f); |
3059 |
LoadInstruments(&subprogress); |
3060 |
__notify_progress(&subprogress, 1.0f); |
3061 |
} |
3062 |
if (!pInstruments) return NULL; |
3063 |
InstrumentsIterator = pInstruments->begin(); |
3064 |
for (uint i = 0; InstrumentsIterator != pInstruments->end(); i++) { |
3065 |
if (i == index) return static_cast<gig::Instrument*>( *InstrumentsIterator ); |
3066 |
InstrumentsIterator++; |
3067 |
} |
3068 |
return NULL; |
3069 |
} |
3070 |
|
3071 |
/** @brief Add a new instrument definition. |
3072 |
* |
3073 |
* This will create a new Instrument object for the gig file. You have |
3074 |
* to call Save() to make this persistent to the file. |
3075 |
* |
3076 |
* @returns pointer to new Instrument object |
3077 |
*/ |
3078 |
Instrument* File::AddInstrument() { |
3079 |
if (!pInstruments) LoadInstruments(); |
3080 |
__ensureMandatoryChunksExist(); |
3081 |
RIFF::List* lstInstruments = pRIFF->GetSubList(LIST_TYPE_LINS); |
3082 |
RIFF::List* lstInstr = lstInstruments->AddSubList(LIST_TYPE_INS); |
3083 |
Instrument* pInstrument = new Instrument(this, lstInstr); |
3084 |
pInstruments->push_back(pInstrument); |
3085 |
return pInstrument; |
3086 |
} |
3087 |
|
3088 |
/** @brief Delete an instrument. |
3089 |
* |
3090 |
* This will delete the given Instrument object from the gig file. You |
3091 |
* have to call Save() to make this persistent to the file. |
3092 |
* |
3093 |
* @param pInstrument - instrument to delete |
3094 |
* @throws gig::Exception if given instrument could not be found |
3095 |
*/ |
3096 |
void File::DeleteInstrument(Instrument* pInstrument) { |
3097 |
if (!pInstruments) throw gig::Exception("Could not delete instrument as there are no instruments"); |
3098 |
InstrumentList::iterator iter = find(pInstruments->begin(), pInstruments->end(), (DLS::Instrument*) pInstrument); |
3099 |
if (iter == pInstruments->end()) throw gig::Exception("Could not delete instrument, could not find given instrument"); |
3100 |
pInstruments->erase(iter); |
3101 |
delete pInstrument; |
3102 |
} |
3103 |
|
3104 |
void File::LoadInstruments() { |
3105 |
LoadInstruments(NULL); |
3106 |
} |
3107 |
|
3108 |
void File::LoadInstruments(progress_t* pProgress) { |
3109 |
if (!pInstruments) pInstruments = new InstrumentList; |
3110 |
RIFF::List* lstInstruments = pRIFF->GetSubList(LIST_TYPE_LINS); |
3111 |
if (lstInstruments) { |
3112 |
int iInstrumentIndex = 0; |
3113 |
RIFF::List* lstInstr = lstInstruments->GetFirstSubList(); |
3114 |
while (lstInstr) { |
3115 |
if (lstInstr->GetListType() == LIST_TYPE_INS) { |
3116 |
// notify current progress |
3117 |
const float localProgress = (float) iInstrumentIndex / (float) Instruments; |
3118 |
__notify_progress(pProgress, localProgress); |
3119 |
|
3120 |
// divide local progress into subprogress for loading current Instrument |
3121 |
progress_t subprogress; |
3122 |
__divide_progress(pProgress, &subprogress, Instruments, iInstrumentIndex); |
3123 |
|
3124 |
pInstruments->push_back(new Instrument(this, lstInstr, &subprogress)); |
3125 |
|
3126 |
iInstrumentIndex++; |
3127 |
} |
3128 |
lstInstr = lstInstruments->GetNextSubList(); |
3129 |
} |
3130 |
__notify_progress(pProgress, 1.0); // notify done |
3131 |
} |
3132 |
} |
3133 |
|
3134 |
Group* File::GetFirstGroup() { |
3135 |
if (!pGroups) LoadGroups(); |
3136 |
// there must always be at least one group |
3137 |
GroupsIterator = pGroups->begin(); |
3138 |
return *GroupsIterator; |
3139 |
} |
3140 |
|
3141 |
Group* File::GetNextGroup() { |
3142 |
if (!pGroups) return NULL; |
3143 |
++GroupsIterator; |
3144 |
return (GroupsIterator == pGroups->end()) ? NULL : *GroupsIterator; |
3145 |
} |
3146 |
|
3147 |
/** |
3148 |
* Returns the group with the given index. |
3149 |
* |
3150 |
* @param index - number of the sought group (0..n) |
3151 |
* @returns sought group or NULL if there's no such group |
3152 |
*/ |
3153 |
Group* File::GetGroup(uint index) { |
3154 |
if (!pGroups) LoadGroups(); |
3155 |
GroupsIterator = pGroups->begin(); |
3156 |
for (uint i = 0; GroupsIterator != pGroups->end(); i++) { |
3157 |
if (i == index) return *GroupsIterator; |
3158 |
++GroupsIterator; |
3159 |
} |
3160 |
return NULL; |
3161 |
} |
3162 |
|
3163 |
Group* File::AddGroup() { |
3164 |
if (!pGroups) LoadGroups(); |
3165 |
// there must always be at least one group |
3166 |
__ensureMandatoryChunksExist(); |
3167 |
Group* pGroup = new Group(this, NULL); |
3168 |
pGroups->push_back(pGroup); |
3169 |
return pGroup; |
3170 |
} |
3171 |
|
3172 |
/** @brief Delete a group and its samples. |
3173 |
* |
3174 |
* This will delete the given Group object and all the samples that |
3175 |
* belong to this group from the gig file. You have to call Save() to |
3176 |
* make this persistent to the file. |
3177 |
* |
3178 |
* @param pGroup - group to delete |
3179 |
* @throws gig::Exception if given group could not be found |
3180 |
*/ |
3181 |
void File::DeleteGroup(Group* pGroup) { |
3182 |
if (!pGroups) LoadGroups(); |
3183 |
std::list<Group*>::iterator iter = find(pGroups->begin(), pGroups->end(), pGroup); |
3184 |
if (iter == pGroups->end()) throw gig::Exception("Could not delete group, could not find given group"); |
3185 |
if (pGroups->size() == 1) throw gig::Exception("Cannot delete group, there must be at least one default group!"); |
3186 |
// delete all members of this group |
3187 |
for (Sample* pSample = pGroup->GetFirstSample(); pSample; pSample = pGroup->GetNextSample()) { |
3188 |
DeleteSample(pSample); |
3189 |
} |
3190 |
// now delete this group object |
3191 |
pGroups->erase(iter); |
3192 |
delete pGroup; |
3193 |
} |
3194 |
|
3195 |
/** @brief Delete a group. |
3196 |
* |
3197 |
* This will delete the given Group object from the gig file. All the |
3198 |
* samples that belong to this group will not be deleted, but instead |
3199 |
* be moved to another group. You have to call Save() to make this |
3200 |
* persistent to the file. |
3201 |
* |
3202 |
* @param pGroup - group to delete |
3203 |
* @throws gig::Exception if given group could not be found |
3204 |
*/ |
3205 |
void File::DeleteGroupOnly(Group* pGroup) { |
3206 |
if (!pGroups) LoadGroups(); |
3207 |
std::list<Group*>::iterator iter = find(pGroups->begin(), pGroups->end(), pGroup); |
3208 |
if (iter == pGroups->end()) throw gig::Exception("Could not delete group, could not find given group"); |
3209 |
if (pGroups->size() == 1) throw gig::Exception("Cannot delete group, there must be at least one default group!"); |
3210 |
// move all members of this group to another group |
3211 |
pGroup->MoveAll(); |
3212 |
pGroups->erase(iter); |
3213 |
delete pGroup; |
3214 |
} |
3215 |
|
3216 |
void File::LoadGroups() { |
3217 |
if (!pGroups) pGroups = new std::list<Group*>; |
3218 |
// try to read defined groups from file |
3219 |
RIFF::List* lst3gri = pRIFF->GetSubList(LIST_TYPE_3GRI); |
3220 |
if (lst3gri) { |
3221 |
RIFF::List* lst3gnl = lst3gri->GetSubList(LIST_TYPE_3GNL); |
3222 |
if (lst3gnl) { |
3223 |
RIFF::Chunk* ck = lst3gnl->GetFirstSubChunk(); |
3224 |
while (ck) { |
3225 |
if (ck->GetChunkID() == CHUNK_ID_3GNM) { |
3226 |
pGroups->push_back(new Group(this, ck)); |
3227 |
} |
3228 |
ck = lst3gnl->GetNextSubChunk(); |
3229 |
} |
3230 |
} |
3231 |
} |
3232 |
// if there were no group(s), create at least the mandatory default group |
3233 |
if (!pGroups->size()) { |
3234 |
Group* pGroup = new Group(this, NULL); |
3235 |
pGroup->Name = "Default Group"; |
3236 |
pGroups->push_back(pGroup); |
3237 |
} |
3238 |
} |
3239 |
|
3240 |
/** |
3241 |
* Apply all the gig file's current instruments, samples, groups and settings |
3242 |
* to the respective RIFF chunks. You have to call Save() to make changes |
3243 |
* persistent. |
3244 |
* |
3245 |
* Usually there is absolutely no need to call this method explicitly. |
3246 |
* It will be called automatically when File::Save() was called. |
3247 |
* |
3248 |
* @throws Exception - on errors |
3249 |
*/ |
3250 |
void File::UpdateChunks() { |
3251 |
// first update base class's chunks |
3252 |
DLS::File::UpdateChunks(); |
3253 |
|
3254 |
// update group's chunks |
3255 |
if (pGroups) { |
3256 |
std::list<Group*>::iterator iter = pGroups->begin(); |
3257 |
std::list<Group*>::iterator end = pGroups->end(); |
3258 |
for (; iter != end; ++iter) { |
3259 |
(*iter)->UpdateChunks(); |
3260 |
} |
3261 |
} |
3262 |
} |
3263 |
|
3264 |
|
3265 |
|
3266 |
// *************** Exception *************** |
3267 |
// * |
3268 |
|
3269 |
Exception::Exception(String Message) : DLS::Exception(Message) { |
3270 |
} |
3271 |
|
3272 |
void Exception::PrintMessage() { |
3273 |
std::cout << "gig::Exception: " << Message << std::endl; |
3274 |
} |
3275 |
|
3276 |
|
3277 |
// *************** functions *************** |
3278 |
// * |
3279 |
|
3280 |
/** |
3281 |
* Returns the name of this C++ library. This is usually "libgig" of |
3282 |
* course. This call is equivalent to RIFF::libraryName() and |
3283 |
* DLS::libraryName(). |
3284 |
*/ |
3285 |
String libraryName() { |
3286 |
return PACKAGE; |
3287 |
} |
3288 |
|
3289 |
/** |
3290 |
* Returns version of this C++ library. This call is equivalent to |
3291 |
* RIFF::libraryVersion() and DLS::libraryVersion(). |
3292 |
*/ |
3293 |
String libraryVersion() { |
3294 |
return VERSION; |
3295 |
} |
3296 |
|
3297 |
} // namespace gig |