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/*************************************************************************** |
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* * |
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* libsf2 - C++ cross-platform SF2 format file access library * |
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* * |
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* Copyright (C) 2009 Grigor Iliev <grigor@grigoriliev.com> * |
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* Copyright (C) 2009 Christian Schoenebeck * |
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* Copyright (C) 2009 Andreas Persson * |
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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 <vector> |
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|
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#include "RIFF.h" |
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|
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#include "SF.h" |
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|
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#include "helper.h" |
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#include <math.h> |
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|
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#define _1200TH_ROOT_OF_2 1.000577789506555 |
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#define _200TH_ROOT_OF_10 1.011579454259899 |
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|
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namespace sf2 { |
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double ToSeconds(int Timecents) { |
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if (Timecents == 0) return 1.0; |
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if (Timecents == -32768) return 0.0; |
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return pow(_1200TH_ROOT_OF_2, Timecents); |
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} |
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|
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double ToPermilles(int Centibels) { |
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if (Centibels == 0) return 1000.0; |
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if (Centibels < 0) return 0.0; |
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return pow(_200TH_ROOT_OF_10, Centibels); |
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} |
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|
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RIFF::Chunk* GetMandatoryChunk(RIFF::List* list, uint32_t chunkId) { |
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RIFF::Chunk* ck = list->GetSubChunk(chunkId); |
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if(ck == NULL) throw Exception("Mandatory chunk in RIFF list chunk not found: " + ToString(chunkId)); |
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return ck; |
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} |
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|
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void LoadString(RIFF::Chunk* ck, std::string& s, int strLength) { |
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if(ck == NULL) return; |
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char* buf = new char[strLength]; |
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int len = 0; |
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for(int i = 0; i < strLength; i++) { |
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buf[i] = ck->ReadInt8(); |
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if(buf[i] == 0 && !len) len = i; |
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} |
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if(!len) len = strLength; |
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s.assign(buf, len); |
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delete [] buf; |
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} |
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|
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/** |
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* Throws an error if the chunk is NULL or |
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* the chunk data size is less than size (in bytes). |
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*/ |
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void VerifySize(RIFF::Chunk* ck, int size) { |
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if (ck == NULL) throw Exception("NULL chunk"); |
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if (ck->GetSize() < size) { |
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throw Exception("Invalid chunk size. Chunk ID: " + ToString(ck->GetChunkID())); |
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} |
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} |
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|
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Modulator::Modulator(SFModulator mod) { |
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Type = mod >> 10; // The last 6 bits |
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Polarity = mod & (1 << 9); |
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Direction = mod & (1 << 8); |
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MidiPalete = mod & (1 << 7); // two paletes - general or MIDI |
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Index = mod & 0x7f; /* index field */; |
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|
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} |
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|
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ModulatorItem::ModulatorItem(ModList& mod) : |
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ModSrcOper(Modulator(mod.ModSrcOper)), |
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ModAmtSrcOper(Modulator(mod.ModAmtSrcOper)) |
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{ |
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|
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} |
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|
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Version::Version(RIFF::Chunk* ck) { |
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if(ck != NULL) VerifySize(ck, 4); |
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Major = ck ? ck->ReadUint16() : 0; |
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Minor = ck ? ck->ReadUint16() : 0; |
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} |
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|
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// *************** Info *************** |
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// * |
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|
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/** @brief Constructor. |
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* |
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* Initializes the info strings with values provided by an INFO list chunk. |
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* |
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* @param list - pointer to a list chunk which contains an INFO list chunk |
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*/ |
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Info::Info(RIFF::List* list) { |
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if (list) { |
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RIFF::List* lstINFO = list->GetSubList(LIST_TYPE_INFO); |
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if (lstINFO) { |
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pVer = new Version(GetMandatoryChunk(lstINFO, CHUNK_ID_IFIL)); |
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LoadString(CHUNK_ID_ISNG, lstINFO, SoundEngine); |
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LoadString(CHUNK_ID_INAM, lstINFO, BankName); |
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LoadString(CHUNK_ID_IROM, lstINFO, RomName); |
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pRomVer = new Version(lstINFO->GetSubChunk(CHUNK_ID_IVER)); |
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LoadString(CHUNK_ID_ICRD, lstINFO, CreationDate); |
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LoadString(CHUNK_ID_IENG, lstINFO, Engineers); |
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LoadString(CHUNK_ID_IPRD, lstINFO, Product); |
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LoadString(CHUNK_ID_ICOP, lstINFO, Copyright); |
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LoadString(CHUNK_ID_ICMT, lstINFO, Comments); |
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LoadString(CHUNK_ID_ISFT, lstINFO, Software); |
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|
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} |
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} |
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} |
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|
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Info::~Info() { |
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delete pVer; |
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delete pRomVer; |
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} |
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|
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/** @brief Load given INFO field. |
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* |
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* Load INFO field from INFO chunk with chunk ID \a ChunkID from INFO |
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* list chunk \a lstINFO and save value to \a s. |
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*/ |
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void Info::LoadString(uint32_t ChunkID, RIFF::List* lstINFO, String& s) { |
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RIFF::Chunk* ck = lstINFO->GetSubChunk(ChunkID); |
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::LoadString(ck, s); // function from helper.h |
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} |
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|
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Sample::Sample(RIFF::Chunk* ck, RIFF::Chunk* pCkSmpl, RIFF::Chunk* pCkSm24) { |
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this->pCkSmpl = pCkSmpl; |
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this->pCkSm24 = pCkSm24; |
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|
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LoadString(ck, Name, 20); |
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Start = ck->ReadInt32(); |
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End = ck->ReadInt32(); |
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StartLoop = ck->ReadInt32(); |
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EndLoop = ck->ReadInt32(); |
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SampleRate = ck->ReadInt32(); |
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OriginalPitch = ck->ReadInt8(); |
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PitchCorrection = ck->ReadInt8(); |
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SampleLink = ck->ReadInt16(); |
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SampleType = ck->ReadInt16(); |
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|
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if (Start > End || !pCkSmpl || pCkSmpl->GetSize() <= End) { |
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throw Exception("Broken SF2 file (invalid sample info)"); |
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} |
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|
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ChannelCount = 1; |
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switch(SampleType) { |
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case 0 : // terminal sample |
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case sf2::Sample::MONO_SAMPLE : |
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case sf2::Sample::ROM_MONO_SAMPLE : break; |
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case sf2::Sample::RIGHT_SAMPLE : |
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case sf2::Sample::LEFT_SAMPLE : |
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case sf2::Sample::ROM_RIGHT_SAMPLE : |
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case sf2::Sample::ROM_LEFT_SAMPLE : ChannelCount = 2; break; |
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case sf2::Sample::LINKED_SAMPLE : |
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case sf2::Sample::ROM_LINKED_SAMPLE : std::cerr << "Linked samples not implemented yet"; break; |
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default: throw Exception("Broken SF2 file (invalid sample type)"); |
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} |
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|
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RAMCache.Size = 0; |
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RAMCache.pStart = NULL; |
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RAMCache.NullExtensionSize = 0; |
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} |
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|
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int Sample::GetChannelCount() { |
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return ChannelCount; |
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} |
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|
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long Sample::GetTotalFrameCount() { |
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return (End - Start); |
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} |
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|
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/** |
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* @returns The frame size in bytes |
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*/ |
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int Sample::GetFrameSize() { |
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return ChannelCount * ((pCkSm24 != NULL) ? 3 : 2); |
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} |
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|
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bool Sample::HasLoops() { |
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return StartLoop != 0 && EndLoop != 0; |
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} |
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|
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/** |
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* Reads \a SampleCount number of sample points from the position stored |
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* in \a pPlaybackState into the buffer pointed by \a pBuffer and moves |
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* the position within the sample respectively, this method honors the |
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* looping informations of the sample (if any). Use this |
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* method if you don't want to load the sample into RAM, thus for disk |
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* streaming. All this methods needs to know to proceed with streaming |
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* for the next time you call this method is stored in \a pPlaybackState. |
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* You have to allocate and initialize the playback_state_t structure by |
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* yourself before you use it to stream a sample: |
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* @code |
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* PlaybackState playbackstate; |
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* playbackstate.position = 0; |
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* playbackstate.reverse = false; |
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* playbackstate.loop_cycles_left = pSample->LoopPlayCount; |
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* @endcode |
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* You don't have to take care of things like if there is actually a loop |
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* defined or if the current read position is located within a loop area. |
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* The method already handles such cases by itself. |
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* |
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* @param pBuffer destination buffer |
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* @param FrameCount number of sample points to read |
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* @param pPlaybackState will be used to store and reload the playback |
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* state for the next ReadAndLoop() call |
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* @returns number of successfully read sample points |
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*/ |
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unsigned long Sample::ReadAndLoop ( |
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void* pBuffer, |
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unsigned long FrameCount, |
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PlaybackState* pPlaybackState |
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) { |
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SetPos(pPlaybackState->position); |
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long frames = Read(pBuffer, FrameCount); |
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pPlaybackState->position = GetPos(); |
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// TODO: Implement looping |
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return frames; |
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} |
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|
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Region::Region() { |
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pSample = NULL; |
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pInstrument = NULL; |
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loKey = hiKey = NONE; |
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minVel = maxVel = NONE; |
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startAddrsOffset = startAddrsCoarseOffset = endAddrsOffset = 0; |
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startloopAddrsOffset = endloopAddrsOffset = 0; |
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pan = fineTune = 0; |
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|
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EG1PreAttackDelay = EG1Attack = EG1Hold = EG1Decay = EG1Release = ToSeconds(-12000); |
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EG1Sustain = 0; |
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EG2PreAttackDelay = EG2Attack = EG2Hold = EG2Decay = EG2Release = ToSeconds(-12000); |
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EG2Sustain = 0; |
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} |
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|
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void Region::SetGenerator(sf2::File* pFile, GenList& Gen) { |
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switch(Gen.GenOper) { |
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case START_ADDRS_OFFSET: |
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startAddrsOffset = Gen.GenAmount.wAmount; |
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break; |
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case END_ADDRS_OFFSET: |
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if (Gen.GenAmount.shAmount <= 0) { |
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endAddrsOffset = Gen.GenAmount.shAmount; |
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} else { |
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std::cerr << "Ignoring invalid endAddrsOffset" << std::endl; |
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} |
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break; |
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case STARTLOOP_ADDRS_OFFSET: |
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startloopAddrsOffset = Gen.GenAmount.shAmount; |
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break; |
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case ENDLOOP_ADDRS_OFFSET: |
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endloopAddrsOffset = Gen.GenAmount.shAmount; |
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break; |
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case START_ADDRS_COARSE_OFFSET: |
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startAddrsCoarseOffset = Gen.GenAmount.wAmount; |
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break; |
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case MOD_LFO_TO_PITCH: |
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break; |
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case VIB_LFO_TO_PITCH: |
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break; |
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case MOD_ENV_TO_PITCH: |
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break; |
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case INITIAL_FILTER_FC: |
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break; |
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case INITIAL_FILTER_Q: |
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break; |
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case MOD_LFO_TO_FILTER_FC: |
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break; |
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case MOD_ENV_TO_FILTER_FC: |
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break; |
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case END_ADDRS_COARSE_OFFSET: |
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break; |
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case MOD_LFO_TO_VOLUME: |
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break; |
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case CHORUS_EFFECTS_SEND: |
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break; |
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case REVERB_EFFECTS_SEND: |
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break; |
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case PAN: |
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pan = Gen.GenAmount.shAmount; |
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pan * 64; pan /= 500; |
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if (pan < -64) pan = -64; |
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if (pan > 63) pan = 63; |
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break; |
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case DELAY_MOD_LFO: |
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break; |
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case FREQ_MOD_LFO: |
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break; |
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case DELAY_VIB_LFO: |
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break; |
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case FREQ_VIB_LFO: |
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break; |
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case DELAY_MOD_ENV: |
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EG2PreAttackDelay = ToSeconds(Gen.GenAmount.shAmount); |
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break; |
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case ATTACK_MOD_ENV: |
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EG2Attack = ToSeconds(Gen.GenAmount.shAmount); |
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break; |
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case HOLD_MOD_ENV: |
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EG2Hold = ToSeconds(Gen.GenAmount.shAmount); |
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break; |
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case DECAY_MOD_ENV: |
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EG2Decay = ToSeconds(Gen.GenAmount.shAmount); |
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break; |
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case SUSTAIN_MOD_ENV: |
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EG2Sustain = 1000 - Gen.GenAmount.shAmount; |
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break; |
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case RELEASEMODENV: |
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EG2Release = ToSeconds(Gen.GenAmount.shAmount); |
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break; |
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case KEYNUM_TO_MOD_ENV_HOLD: |
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break; |
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case KEYNUM_TO_MOD_ENV_DECAY: |
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break; |
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case DELAY_VOL_ENV: |
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EG1PreAttackDelay = ToSeconds(Gen.GenAmount.shAmount); |
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break; |
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case ATTACK_VOL_ENV: |
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EG1Attack = ToSeconds(Gen.GenAmount.shAmount); |
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break; |
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case HOLD_VOL_ENV: |
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EG1Hold = ToSeconds(Gen.GenAmount.shAmount); |
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break; |
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case DECAY_VOL_ENV: |
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EG1Decay = ToSeconds(Gen.GenAmount.shAmount); |
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break; |
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case SUSTAIN_VOL_ENV: |
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EG1Sustain = ToPermilles(Gen.GenAmount.shAmount); |
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break; |
350 |
case RELEASE_VOL_ENV: |
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EG1Release = ToSeconds(Gen.GenAmount.shAmount); |
352 |
break; |
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case KEYNUM_TO_VOL_ENV_HOLD: |
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break; |
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case KEYNUM_TO_VOL_ENV_DECAY: |
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break; |
357 |
case INSTRUMENT: { |
358 |
uint16_t id = Gen.GenAmount.wAmount; |
359 |
if (id >= pFile->Instruments.size()) { |
360 |
throw Exception("Broken SF2 file (missing instruments)"); |
361 |
} |
362 |
pInstrument = pFile->Instruments[id]; |
363 |
break; |
364 |
} |
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case KEY_RANGE: |
366 |
loKey = Gen.GenAmount.ranges.byLo; |
367 |
hiKey = Gen.GenAmount.ranges.byHi; |
368 |
break; |
369 |
case VEL_RANGE: |
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minVel = Gen.GenAmount.ranges.byLo; |
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maxVel = Gen.GenAmount.ranges.byHi; |
372 |
break; |
373 |
case STARTLOOP_ADDRS_COARSE_OFFSET: |
374 |
break; |
375 |
case KEYNUM: |
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break; |
377 |
case VELOCITY: |
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break; |
379 |
case INITIAL_ATTENUATION: |
380 |
break; |
381 |
case ENDLOOP_ADDRS_COARSE_OFFSET: |
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break; |
383 |
case COARSE_TUNE: |
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break; |
385 |
case FINE_TUNE: |
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fineTune = Gen.GenAmount.shAmount; |
387 |
break; |
388 |
case SAMPLE_ID: { |
389 |
uint16_t sid = Gen.GenAmount.wAmount; |
390 |
if (sid >= pFile->Samples.size()) { |
391 |
throw Exception("Broken SF2 file (missing samples)"); |
392 |
} |
393 |
pSample = pFile->Samples[sid]; |
394 |
break; |
395 |
} |
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case SAMPLE_MODES: |
397 |
break; |
398 |
case SCALE_TUNING: |
399 |
break; |
400 |
case EXCLUSIVE_CLASS: |
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break; |
402 |
case OVERRIDING_ROOT_KEY: |
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break; |
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} |
405 |
} |
406 |
|
407 |
void Region::SetModulator(sf2::File* pFile, ModList& Mod) { |
408 |
modulators.push_back(ModulatorItem(Mod)); |
409 |
/*switch(srcType) { |
410 |
case NO_CONTROLLER: |
411 |
break; |
412 |
case NOTE_ON_VELOCITY: |
413 |
break; |
414 |
case NOTE_ON_KEY_NUMBER: |
415 |
break; |
416 |
case POLY_PRESSURE: |
417 |
break; |
418 |
case CHANNEL_PRESSURE: |
419 |
break; |
420 |
case PITCH_WHEEL: |
421 |
break; |
422 |
case PITCH_WHEEL_SENSITIVITY: |
423 |
break; |
424 |
case LINK: |
425 |
break; |
426 |
default: std::cout << "Unknown controller source: " << srcType << std::endl; |
427 |
}*/ |
428 |
} |
429 |
|
430 |
InstrumentBase::InstrumentBase(sf2::File* pFile) { |
431 |
this->pFile = pFile; |
432 |
pGlobalRegion = NULL; |
433 |
} |
434 |
|
435 |
InstrumentBase::~InstrumentBase() { |
436 |
if (pGlobalRegion) delete pGlobalRegion; |
437 |
for (int i = regions.size() - 1; i >= 0; i--) { |
438 |
if (regions[i]) delete (regions[i]); |
439 |
} |
440 |
} |
441 |
|
442 |
int InstrumentBase::GetRegionCount() { |
443 |
return regions.size() - 1; // exclude terminal region |
444 |
} |
445 |
|
446 |
Region* InstrumentBase::GetRegion(int idx) { |
447 |
if (idx < 0 || idx >= GetRegionCount()) { |
448 |
throw Exception("Region index out of bounds"); |
449 |
} |
450 |
|
451 |
return regions[idx]; |
452 |
} |
453 |
|
454 |
std::vector<Region*> InstrumentBase::GetRegionsOnKey(int key, uint8_t vel) { |
455 |
std::vector<Region*> v; |
456 |
for (int i = 0; i < GetRegionCount(); i++) { |
457 |
Region* r = GetRegion(i); |
458 |
if ( |
459 |
key >= r->loKey && key <= r->hiKey && |
460 |
((r->minVel == NONE && r->maxVel == NONE) || (vel >= r->minVel && vel <= r->maxVel)) |
461 |
) { |
462 |
v.push_back(r); |
463 |
} |
464 |
} |
465 |
|
466 |
return v; |
467 |
} |
468 |
|
469 |
Instrument::Instrument(sf2::File* pFile, RIFF::Chunk* ck) : InstrumentBase(pFile) { |
470 |
this->pFile = pFile; |
471 |
LoadString(ck, Name, 20); |
472 |
InstBagNdx = ck->ReadInt16(); |
473 |
} |
474 |
|
475 |
Instrument::~Instrument() { |
476 |
|
477 |
} |
478 |
|
479 |
void Instrument::LoadRegions(int idx1, int idx2) { |
480 |
for (int i = idx1; i < idx2 - 1; i++) { |
481 |
int gIdx1 = pFile->InstBags[i].InstGenNdx; |
482 |
int gIdx2 = pFile->InstBags[i + 1].InstGenNdx; |
483 |
|
484 |
if (gIdx1 < 0 || gIdx2 < 0 || gIdx1 > gIdx2 || gIdx2 >= pFile->InstGenLists.size()) { |
485 |
throw Exception("Broken SF2 file (invalid InstGenNdx)"); |
486 |
} |
487 |
|
488 |
int mIdx1 = pFile->InstBags[i].InstModNdx; |
489 |
int mIdx2 = pFile->InstBags[i + 1].InstModNdx; |
490 |
|
491 |
if (mIdx1 < 0 || mIdx2 < 0 || mIdx1 > mIdx2 || mIdx2 >= pFile->InstModLists.size()) { |
492 |
throw Exception("Broken SF2 file (invalid InstModNdx)"); |
493 |
} |
494 |
|
495 |
Region* reg = new Region; |
496 |
|
497 |
for (int j = gIdx1; j < gIdx2; j++) { |
498 |
reg->SetGenerator(pFile, pFile->InstGenLists[j]); |
499 |
// TODO: ignore generators following a sampleID generator |
500 |
} |
501 |
|
502 |
for (int j = mIdx1; j < mIdx2; j++) { |
503 |
reg->SetModulator(pFile, pFile->InstModLists[j]); |
504 |
} |
505 |
|
506 |
if (reg->pSample == NULL) { |
507 |
if (i == idx1) { |
508 |
pGlobalRegion = reg; // global zone |
509 |
} else { |
510 |
std::cerr << "Ignoring instrument's region without sample" << std::endl; |
511 |
delete reg; |
512 |
} |
513 |
} else { |
514 |
regions.push_back(reg); |
515 |
} |
516 |
} |
517 |
} |
518 |
|
519 |
Preset::Preset(sf2::File* pFile, RIFF::Chunk* ck): InstrumentBase(pFile) { |
520 |
this->pFile = pFile; |
521 |
LoadString(ck, Name, 20); |
522 |
PresetNum = ck->ReadInt16(); |
523 |
Bank = ck->ReadInt16(); |
524 |
PresetBagNdx = ck->ReadInt16(); |
525 |
Library = ck->ReadInt32(); |
526 |
Genre = ck->ReadInt32(); |
527 |
Morphology = ck->ReadInt32(); |
528 |
} |
529 |
|
530 |
Preset::~Preset() { |
531 |
|
532 |
} |
533 |
|
534 |
void Preset::LoadRegions(int idx1, int idx2) { |
535 |
for (int i = idx1; i < idx2 - 1; i++) { |
536 |
int gIdx1 = pFile->PresetBags[i].GenNdx; |
537 |
int gIdx2 = pFile->PresetBags[i + 1].GenNdx; |
538 |
|
539 |
if (gIdx1 < 0 || gIdx2 < 0 || gIdx1 > gIdx2 || gIdx2 >= pFile->PresetGenLists.size()) { |
540 |
throw Exception("Broken SF2 file (invalid PresetGenNdx)"); |
541 |
} |
542 |
|
543 |
Region* reg = new Region; |
544 |
|
545 |
for (int j = gIdx1; j < gIdx2; j++) { |
546 |
reg->SetGenerator(pFile, pFile->PresetGenLists[j]); |
547 |
} |
548 |
if (reg->pInstrument == NULL) { |
549 |
if (i == idx1) { |
550 |
pGlobalRegion = reg; // global zone |
551 |
} else { |
552 |
std::cerr << "Ignoring preset's region without instrument" << std::endl; |
553 |
delete reg; |
554 |
} |
555 |
} else { |
556 |
regions.push_back(reg); |
557 |
} |
558 |
} |
559 |
} |
560 |
|
561 |
/** @brief Constructor. |
562 |
* |
563 |
* Load an existing SF2 file. |
564 |
* |
565 |
* @param pRIFF - pointer to a RIFF file which is actually the SF2 file |
566 |
* to load |
567 |
* @throws Exception if given file is not a SF2 file, expected chunks |
568 |
* are missing |
569 |
*/ |
570 |
File::File(RIFF::File* pRIFF) { |
571 |
if (!pRIFF) throw Exception("NULL pointer reference to RIFF::File object."); |
572 |
this->pRIFF = pRIFF; |
573 |
|
574 |
if (pRIFF->GetListType() != RIFF_TYPE_SF2) { |
575 |
throw Exception("Not a SF2 file"); |
576 |
} |
577 |
|
578 |
pInfo = new Info(pRIFF); |
579 |
if (pInfo->pVer->Major != 2) { |
580 |
throw Exception("Unsupported version: " + ToString(pInfo->pVer->Major)); |
581 |
} |
582 |
|
583 |
RIFF::List* lstSDTA = pRIFF->GetSubList(LIST_TYPE_SDTA); |
584 |
if (lstSDTA == NULL) { |
585 |
throw Exception("Broken SF2 file (missing sdta)"); |
586 |
} |
587 |
|
588 |
RIFF::Chunk* pCkSmpl = lstSDTA->GetSubChunk(CHUNK_ID_SMPL); |
589 |
RIFF::Chunk* pCkSm24 = lstSDTA->GetSubChunk(CHUNK_ID_SM24); |
590 |
if (pCkSmpl != NULL && pCkSm24 != NULL) { |
591 |
long l = pCkSmpl->GetSize() / 2; |
592 |
if (l%2) l++; |
593 |
if (pCkSm24->GetSize() != l) { |
594 |
pCkSm24 = NULL; // ignoring sm24 due to invalid size |
595 |
} |
596 |
} |
597 |
|
598 |
RIFF::List* lstPDTA = pRIFF->GetSubList(LIST_TYPE_PDTA); |
599 |
if (lstPDTA == NULL) { |
600 |
throw Exception("Broken SF2 file (missing pdta)"); |
601 |
} |
602 |
|
603 |
RIFF::Chunk* ck = lstPDTA->GetSubChunk(CHUNK_ID_PHDR); |
604 |
if (ck->GetSize() < 38) { |
605 |
throw Exception("Broken SF2 file (broken phdr)"); |
606 |
} |
607 |
|
608 |
int count = ck->GetSize() / 38; |
609 |
for (int i = 0; i < count; i++) { |
610 |
Presets.push_back(new Preset(this, ck)); |
611 |
} |
612 |
|
613 |
ck = GetMandatoryChunk(lstPDTA, CHUNK_ID_PBAG); |
614 |
if (ck->GetSize() < 4 || (ck->GetSize() % 4)) { |
615 |
throw Exception("Broken SF2 file (broken pbag)"); |
616 |
} |
617 |
|
618 |
count = ck->GetSize() / 4; |
619 |
for (int i = 0; i < count; i++) { |
620 |
PresetBag pb; |
621 |
pb.GenNdx = ck->ReadInt16(); |
622 |
pb.ModNdx = ck->ReadInt16(); |
623 |
PresetBags.push_back(pb); |
624 |
} |
625 |
//std::cout << "Preset bags: " << PresetBags.size() << std::endl; |
626 |
|
627 |
ck = GetMandatoryChunk(lstPDTA, CHUNK_ID_PMOD); |
628 |
if (ck->GetSize() % 10) { |
629 |
throw Exception("Broken SF2 file (broken pmod)"); |
630 |
} |
631 |
|
632 |
count = ck->GetSize() / 10; |
633 |
for (int i = 0; i < count; i++) { |
634 |
ModList ml; |
635 |
ml.ModSrcOper = ck->ReadInt16(); |
636 |
ml.ModDestOper = ck->ReadInt16(); |
637 |
ml.ModAmount = ck->ReadInt16(); |
638 |
ml.ModAmtSrcOper = ck->ReadInt16(); |
639 |
ml.ModTransOper = ck->ReadInt16(); |
640 |
PresetModLists.push_back(ml); |
641 |
} |
642 |
//std::cout << "Preset mod lists: " << PresetModLists.size() << std::endl; |
643 |
|
644 |
ck = GetMandatoryChunk(lstPDTA, CHUNK_ID_PGEN); |
645 |
if (ck->GetSize() < 4 || (ck->GetSize() % 4)) { |
646 |
throw Exception("Broken SF2 file (broken pgen)"); |
647 |
} |
648 |
|
649 |
count = ck->GetSize() / 4; |
650 |
for (int i = 0; i < count; i++) { |
651 |
GenList gl; |
652 |
gl.GenOper = ck->ReadInt16(); |
653 |
gl.GenAmount.wAmount = ck->ReadInt16(); |
654 |
PresetGenLists.push_back(gl); |
655 |
} |
656 |
//std::cout << "Preset gen lists: " << PresetGenLists.size() << std::endl; |
657 |
|
658 |
ck = GetMandatoryChunk(lstPDTA, CHUNK_ID_INST); |
659 |
if (ck->GetSize() < (22 * 2) || (ck->GetSize() % 22)) { |
660 |
throw Exception("Broken SF2 file (broken inst)"); |
661 |
} |
662 |
count = ck->GetSize() / 22; |
663 |
for (int i = 0; i < count; i++) { |
664 |
Instruments.push_back(new Instrument(this, ck)); |
665 |
} |
666 |
|
667 |
ck = GetMandatoryChunk(lstPDTA, CHUNK_ID_IBAG); |
668 |
if (ck->GetSize() < 4 || (ck->GetSize() % 4)) { |
669 |
throw Exception("Broken SF2 file (broken ibag)"); |
670 |
} |
671 |
|
672 |
count = ck->GetSize() / 4; |
673 |
for (int i = 0; i < count; i++) { |
674 |
InstBag ib; |
675 |
ib.InstGenNdx = ck->ReadInt16(); |
676 |
ib.InstModNdx = ck->ReadInt16(); |
677 |
InstBags.push_back(ib); |
678 |
} |
679 |
//std::cout << "Instrument bags: " << InstBags.size() << std::endl; |
680 |
|
681 |
ck = GetMandatoryChunk(lstPDTA, CHUNK_ID_IMOD); |
682 |
if (ck->GetSize() % 10) { |
683 |
throw Exception("Broken SF2 file (broken imod)"); |
684 |
} |
685 |
|
686 |
count = ck->GetSize() / 10; |
687 |
for (int i = 0; i < count; i++) { |
688 |
ModList ml; |
689 |
ml.ModSrcOper = ck->ReadInt16(); |
690 |
ml.ModDestOper = ck->ReadInt16(); |
691 |
ml.ModAmount = ck->ReadInt16(); |
692 |
ml.ModAmtSrcOper = ck->ReadInt16(); |
693 |
ml.ModTransOper = ck->ReadInt16(); |
694 |
InstModLists.push_back(ml); |
695 |
} |
696 |
//std::cout << "Instrument mod lists: " << InstModLists.size() << std::endl; |
697 |
|
698 |
ck = GetMandatoryChunk(lstPDTA, CHUNK_ID_IGEN); |
699 |
if (ck->GetSize() < 4 || (ck->GetSize() % 4)) { |
700 |
throw Exception("Broken SF2 file (broken igen)"); |
701 |
} |
702 |
|
703 |
count = ck->GetSize() / 4; |
704 |
for (int i = 0; i < count; i++) { |
705 |
GenList gl; |
706 |
gl.GenOper = ck->ReadInt16(); |
707 |
gl.GenAmount.wAmount = ck->ReadInt16(); |
708 |
InstGenLists.push_back(gl); |
709 |
} |
710 |
//std::cout << "Instrument gen lists: " << InstGenLists.size() << std::endl; |
711 |
|
712 |
ck = GetMandatoryChunk(lstPDTA, CHUNK_ID_SHDR); |
713 |
if ((ck->GetSize() % 46)) { |
714 |
throw Exception("Broken SF2 file (broken shdr)"); |
715 |
} |
716 |
count = ck->GetSize() / 46; |
717 |
for (int i = 0; i < count; i++) { |
718 |
Samples.push_back(new Sample(ck, pCkSmpl, pCkSm24)); |
719 |
} |
720 |
|
721 |
// Loading instrument regions |
722 |
for (int i = 0; i < Instruments.size() - 1; i++) { |
723 |
Instrument* instr = Instruments[i]; |
724 |
int x1 = instr->InstBagNdx; |
725 |
int x2 = Instruments[i + 1]->InstBagNdx; |
726 |
if (x1 < 0 || x2 < 0 || x1 > x2 || x2 >= InstBags.size()) { |
727 |
throw Exception("Broken SF2 file (invalid InstBagNdx)"); |
728 |
} |
729 |
|
730 |
instr->LoadRegions(x1, x2); |
731 |
} |
732 |
|
733 |
// Loading preset regions |
734 |
for (int i = 0; i < Presets.size() - 1; i++) { |
735 |
Preset* preset = Presets[i]; |
736 |
int x1 = preset->PresetBagNdx; |
737 |
int x2 = Presets[i + 1]->PresetBagNdx; |
738 |
if (x1 < 0 || x2 < 0 || x1 > x2 || x2 >= PresetBags.size()) { |
739 |
throw Exception("Broken SF2 file (invalid PresetBagNdx)"); |
740 |
} |
741 |
|
742 |
preset->LoadRegions(x1, x2); |
743 |
} |
744 |
} |
745 |
|
746 |
File::~File() { |
747 |
delete pInfo; |
748 |
for (int i = Presets.size() - 1; i >= 0; i--) { |
749 |
if (Presets[i]) delete (Presets[i]); |
750 |
} |
751 |
for (int i = Instruments.size() - 1; i >= 0; i--) { |
752 |
if (Instruments[i]) delete (Instruments[i]); |
753 |
} |
754 |
for (int i = Samples.size() - 1; i >= 0; i--) { |
755 |
if (Samples[i]) delete (Samples[i]); |
756 |
} |
757 |
} |
758 |
|
759 |
int File::GetPresetCount() { |
760 |
return Presets.size() - 1; // exclude terminal preset (EOP) |
761 |
} |
762 |
|
763 |
Preset* File::GetPreset(int idx) { |
764 |
if (idx < 0 || idx >= GetPresetCount()) { |
765 |
throw Exception("Preset index out of bounds"); |
766 |
} |
767 |
|
768 |
return Presets[idx]; |
769 |
} |
770 |
|
771 |
int File::GetInstrumentCount() { |
772 |
return Instruments.size() - 1; // exclude terminal instrument (EOI) |
773 |
} |
774 |
|
775 |
Instrument* File::GetInstrument(int idx) { |
776 |
if (idx < 0 || idx >= GetInstrumentCount()) { |
777 |
throw Exception("Instrument index out of bounds"); |
778 |
} |
779 |
|
780 |
return Instruments[idx]; |
781 |
} |
782 |
|
783 |
int File::GetSampleCount() { |
784 |
return Samples.size() - 1; // exclude terminal sample (EOS) |
785 |
} |
786 |
|
787 |
Sample* File::GetSample(int idx) { |
788 |
if (idx < 0 || idx >= GetSampleCount()) { |
789 |
throw Exception("Sample index out of bounds"); |
790 |
} |
791 |
|
792 |
return Samples[idx]; |
793 |
} |
794 |
|
795 |
void File::DeleteSample(Sample* pSample) { |
796 |
for (int i = 0; i < GetSampleCount(); i++) { |
797 |
if (Samples[i] == pSample) { |
798 |
delete pSample; |
799 |
Samples[i] = NULL; |
800 |
return; |
801 |
} |
802 |
} |
803 |
|
804 |
throw Exception("Unknown sample: " + pSample->Name); |
805 |
} |
806 |
|
807 |
bool File::HasSamples() { |
808 |
for (int i = 0; i < GetSampleCount(); i++) { |
809 |
if (Samples[i] != NULL) return true; |
810 |
} |
811 |
|
812 |
return false; |
813 |
} |
814 |
|
815 |
/** |
816 |
* Loads the whole sample wave into RAM. Use |
817 |
* ReleaseSampleData() to free the memory if you don't need the cached |
818 |
* sample data anymore. |
819 |
* |
820 |
* @returns buffer_t structure with start address and size of the buffer |
821 |
* in bytes |
822 |
* @see ReleaseSampleData(), Read(), SetPos() |
823 |
*/ |
824 |
Sample::buffer_t Sample::LoadSampleData() { |
825 |
return LoadSampleDataWithNullSamplesExtension(GetTotalFrameCount(), 0); // 0 amount of NullSamples |
826 |
} |
827 |
|
828 |
/** |
829 |
* Reads and caches the first \a SampleCount |
830 |
* numbers of SamplePoints in RAM. Use ReleaseSampleData() to free the |
831 |
* memory space if you don't need the cached samples anymore. |
832 |
* Read the <i>Size</i> member of the <i>buffer_t</i> structure |
833 |
* that will be returned to determine the actual cached samples, but note |
834 |
* that the size is given in bytes! You get the number of actually cached |
835 |
* samples by dividing it by the frame size of the sample: |
836 |
* @code |
837 |
* buffer_t buf = pSample->LoadSampleData(acquired_samples); |
838 |
* long cachedsamples = buf.Size / pSample->FrameSize; |
839 |
* @endcode |
840 |
* |
841 |
* @param SampleCount - number of sample points to load into RAM |
842 |
* @returns buffer_t structure with start address and size of |
843 |
* the cached sample data in bytes |
844 |
* @see ReleaseSampleData(), Read(), SetPos() |
845 |
*/ |
846 |
Sample::buffer_t Sample::LoadSampleData(unsigned long SampleCount) { |
847 |
return LoadSampleDataWithNullSamplesExtension(SampleCount, 0); // 0 amount of NullSamples |
848 |
} |
849 |
|
850 |
/** |
851 |
* Loads the whole sample wave into RAM. Use |
852 |
* ReleaseSampleData() to free the memory if you don't need the cached |
853 |
* sample data anymore. |
854 |
* The method will add \a NullSamplesCount silence samples past the |
855 |
* official buffer end (this won't affect the 'Size' member of the |
856 |
* buffer_t structure, that means 'Size' always reflects the size of the |
857 |
* actual sample data, the buffer might be bigger though). Silence |
858 |
* samples past the official buffer are needed for differential |
859 |
* algorithms that always have to take subsequent samples into account |
860 |
* (resampling/interpolation would be an important example) and avoids |
861 |
* memory access faults in such cases. |
862 |
* |
863 |
* @param NullSamplesCount - number of silence samples the buffer should |
864 |
* be extended past it's data end |
865 |
* @returns buffer_t structure with start address and |
866 |
* size of the buffer in bytes |
867 |
* @see ReleaseSampleData(), Read(), SetPos() |
868 |
*/ |
869 |
Sample::buffer_t Sample::LoadSampleDataWithNullSamplesExtension(uint NullSamplesCount) { |
870 |
return LoadSampleDataWithNullSamplesExtension(GetTotalFrameCount(), NullSamplesCount); |
871 |
} |
872 |
|
873 |
/** |
874 |
* Reads and caches the first \a SampleCount |
875 |
* numbers of SamplePoints in RAM. Use ReleaseSampleData() to free the |
876 |
* memory space if you don't need the cached samples anymore. |
877 |
* Read the <i>Size</i> member of the <i>buffer_t</i> structure |
878 |
* that will be returned to determine the actual cached samples, but note |
879 |
* that the size is given in bytes! You get the number of actually cached |
880 |
* samples by dividing it by the frame size of the sample: |
881 |
* @code |
882 |
* buffer_t buf = pSample->LoadSampleDataWithNullSamplesExtension(acquired_samples, null_samples); |
883 |
* long cachedsamples = buf.Size / pSample->FrameSize; |
884 |
* @endcode |
885 |
* The method will add \a NullSamplesCount silence samples past the |
886 |
* official buffer end (this won't affect the 'Size' member of the |
887 |
* buffer_t structure, that means 'Size' always reflects the size of the |
888 |
* actual sample data, the buffer might be bigger though). Silence |
889 |
* samples past the official buffer are needed for differential |
890 |
* algorithms that always have to take subsequent samples into account |
891 |
* (resampling/interpolation would be an important example) and avoids |
892 |
* memory access faults in such cases. |
893 |
* |
894 |
* @param SampleCount - number of sample points to load into RAM |
895 |
* @param NullSamplesCount - number of silence samples the buffer should |
896 |
* be extended past it's data end |
897 |
* @returns buffer_t structure with start address and |
898 |
* size of the cached sample data in bytes |
899 |
* @see ReleaseSampleData(), Read(), SetPos() |
900 |
*/ |
901 |
Sample::buffer_t Sample::LoadSampleDataWithNullSamplesExtension(unsigned long SampleCount, uint NullSamplesCount) { |
902 |
if (SampleCount > GetTotalFrameCount()) SampleCount = GetTotalFrameCount(); |
903 |
if (RAMCache.pStart) delete[] (int8_t*) RAMCache.pStart; |
904 |
unsigned long allocationsize = (SampleCount + NullSamplesCount) * GetFrameSize(); |
905 |
SetPos(0); // reset read position to begin of sample |
906 |
RAMCache.pStart = new int8_t[allocationsize]; |
907 |
RAMCache.Size = Read(RAMCache.pStart, SampleCount) * GetFrameSize(); |
908 |
RAMCache.NullExtensionSize = allocationsize - RAMCache.Size; |
909 |
// fill the remaining buffer space with silence samples |
910 |
memset((int8_t*)RAMCache.pStart + RAMCache.Size, 0, RAMCache.NullExtensionSize); |
911 |
return GetCache(); |
912 |
} |
913 |
|
914 |
/** |
915 |
* Returns current cached sample points. A buffer_t structure will be |
916 |
* returned which contains address pointer to the begin of the cache and |
917 |
* the size of the cached sample data in bytes. Use |
918 |
* <i>LoadSampleData()</i> to cache a specific amount of sample points in |
919 |
* RAM. |
920 |
* |
921 |
* @returns buffer_t structure with current cached sample points |
922 |
* @see LoadSampleData(); |
923 |
*/ |
924 |
Sample::buffer_t Sample::GetCache() { |
925 |
// return a copy of the buffer_t structure |
926 |
buffer_t result; |
927 |
result.Size = this->RAMCache.Size; |
928 |
result.pStart = this->RAMCache.pStart; |
929 |
result.NullExtensionSize = this->RAMCache.NullExtensionSize; |
930 |
return result; |
931 |
} |
932 |
|
933 |
/** |
934 |
* Frees the cached sample from RAM if loaded with |
935 |
* <i>LoadSampleData()</i> previously. |
936 |
* |
937 |
* @see LoadSampleData(); |
938 |
*/ |
939 |
void Sample::ReleaseSampleData() { |
940 |
if (RAMCache.pStart) delete[] (int8_t*) RAMCache.pStart; |
941 |
RAMCache.pStart = NULL; |
942 |
RAMCache.Size = 0; |
943 |
RAMCache.NullExtensionSize = 0; |
944 |
} |
945 |
|
946 |
/** |
947 |
* Sets the position within the sample (in sample points, not in |
948 |
* bytes). Use this method and <i>Read()</i> if you don't want to load |
949 |
* the sample into RAM, thus for disk streaming. |
950 |
* |
951 |
* @param SampleCount number of sample points to jump |
952 |
* @returns the new sample position |
953 |
* @see Read() |
954 |
*/ |
955 |
unsigned long Sample::SetPos(unsigned long SampleCount) { |
956 |
pCkSmpl->SetPos((Start * 2) + (SampleCount * 2), RIFF::stream_start); |
957 |
if(pCkSm24) pCkSm24->SetPos(Start + SampleCount, RIFF::stream_start); |
958 |
return SampleCount; |
959 |
} |
960 |
|
961 |
/** |
962 |
* Returns the current position in the sample (in sample points). |
963 |
*/ |
964 |
unsigned long Sample::GetPos() { |
965 |
return (pCkSmpl->GetPos() - (Start * 2)) / 2; |
966 |
} |
967 |
|
968 |
/** |
969 |
* Reads \a SampleCount number of sample points from the current |
970 |
* position into the buffer pointed by \a pBuffer and increments the |
971 |
* position within the sample. Use this method |
972 |
* and <i>SetPos()</i> if you don't want to load the sample into RAM, |
973 |
* thus for disk streaming. |
974 |
* |
975 |
* For 16 bit samples, the data in the buffer will be int16_t |
976 |
* (using native endianness). For 24 bit, the buffer will |
977 |
* contain three bytes per sample, little-endian. |
978 |
* |
979 |
* @param pBuffer destination buffer |
980 |
* @param SampleCount number of sample points to read |
981 |
* @returns number of successfully read sample points |
982 |
* @see SetPos() |
983 |
*/ |
984 |
unsigned long Sample::Read(void* pBuffer, unsigned long SampleCount) { |
985 |
if (SampleCount == 0) return 0; |
986 |
long pos = GetPos(); |
987 |
if (pos + SampleCount > GetTotalFrameCount()) SampleCount = GetTotalFrameCount() - pos; |
988 |
|
989 |
if (GetFrameSize() / GetChannelCount() == 3 /* 24 bit */) { |
990 |
uint8_t* pBuf = (uint8_t*)pBuffer; |
991 |
if (SampleType == MONO_SAMPLE || SampleType == ROM_MONO_SAMPLE) { |
992 |
for (int i = 0; i < SampleCount; i++) { |
993 |
pBuf[i*3] = pCkSmpl->ReadInt16(); |
994 |
pBuf[i*3 + 2] = pCkSm24->ReadInt8(); |
995 |
} |
996 |
} else if (SampleType == LEFT_SAMPLE || SampleType == ROM_LEFT_SAMPLE) { |
997 |
for (int i = 0; i < SampleCount; i++) { |
998 |
pBuf[i*6] = pCkSmpl->ReadInt16(); |
999 |
pBuf[i*6 + 2] = pCkSm24->ReadInt8(); |
1000 |
pBuf[i*6 + 3] = pBuf[i*6 + 4] = pBuf[i*6 + 5] = 0; |
1001 |
} |
1002 |
} else if (SampleType == RIGHT_SAMPLE || SampleType == ROM_RIGHT_SAMPLE) { |
1003 |
for (int i = 0; i < SampleCount; i++) { |
1004 |
pBuf[i*6] = pBuf[i*6 + 1] = pBuf[i*6 + 2] = 0; |
1005 |
pBuf[i*6 + 3] = pCkSmpl->ReadInt16(); |
1006 |
pBuf[i*6 + 5] = pCkSm24->ReadInt8(); |
1007 |
} |
1008 |
} |
1009 |
} else { |
1010 |
if (SampleType == MONO_SAMPLE || SampleType == ROM_MONO_SAMPLE) { |
1011 |
return pCkSmpl->Read(pBuffer, SampleCount, 2); |
1012 |
} |
1013 |
|
1014 |
int16_t* pBuf = (int16_t*)pBuffer; |
1015 |
if (SampleType == LEFT_SAMPLE || SampleType == ROM_LEFT_SAMPLE) { |
1016 |
pCkSmpl->Read(pBuf, SampleCount, 2); |
1017 |
for (int i = SampleCount - 1; i >= 0; i--) { |
1018 |
pBuf[i*2] = pBuf[i]; |
1019 |
pBuf[i*2 + 1] = 0; |
1020 |
} |
1021 |
} else if (SampleType == RIGHT_SAMPLE || SampleType == ROM_RIGHT_SAMPLE) { |
1022 |
pCkSmpl->Read(pBuf, SampleCount, 2); |
1023 |
for (int i = SampleCount - 1; i >= 0; i--) { |
1024 |
pBuf[i*2] = 0; |
1025 |
pBuf[i*2 + 1] = pBuf[i]; |
1026 |
} |
1027 |
} |
1028 |
} |
1029 |
|
1030 |
if (pCkSmpl->GetPos() > (End * 2)) { |
1031 |
std::cerr << "Read after the sample end. This is a BUG!" << std::endl; |
1032 |
std::cerr << "Current position: " << GetPos() << std::endl; |
1033 |
std::cerr << "Total number of frames: " << GetTotalFrameCount() << std::endl << std::endl; |
1034 |
} |
1035 |
return SampleCount; |
1036 |
} |
1037 |
|
1038 |
|
1039 |
// *************** functions *************** |
1040 |
// * |
1041 |
|
1042 |
/** |
1043 |
* Returns the name of this C++ library. |
1044 |
*/ |
1045 |
String libraryName() { |
1046 |
return PACKAGE; |
1047 |
} |
1048 |
|
1049 |
/** |
1050 |
* Returns version of this C++ library. |
1051 |
*/ |
1052 |
String libraryVersion() { |
1053 |
return VERSION; |
1054 |
} |
1055 |
|
1056 |
} // namespace sf2 |