--- libgig/trunk/src/DLS.cpp 2004/12/04 14:13:49 317 +++ libgig/trunk/src/DLS.cpp 2016/11/25 18:34:45 3048 @@ -1,9 +1,9 @@ /*************************************************************************** * * - * libgig - C++ cross-platform Gigasampler format file loader library * + * libgig - C++ cross-platform Gigasampler format file access library * * * - * Copyright (C) 2003, 2004 by Christian Schoenebeck * - * * + * Copyright (C) 2003-2016 by Christian Schoenebeck * + * * * * * This library is free software; you can redistribute it and/or modify * * it under the terms of the GNU General Public License as published by * @@ -23,6 +23,50 @@ #include "DLS.h" +#include +#include + +#ifdef __APPLE__ +#include +#elif defined(HAVE_UUID_UUID_H) +#include +#endif + +#include "helper.h" + +// macros to decode connection transforms +#define CONN_TRANSFORM_SRC(x) ((x >> 10) & 0x000F) +#define CONN_TRANSFORM_CTL(x) ((x >> 4) & 0x000F) +#define CONN_TRANSFORM_DST(x) (x & 0x000F) +#define CONN_TRANSFORM_BIPOLAR_SRC(x) (x & 0x4000) +#define CONN_TRANSFORM_BIPOLAR_CTL(x) (x & 0x0100) +#define CONN_TRANSFORM_INVERT_SRC(x) (x & 0x8000) +#define CONN_TRANSFORM_INVERT_CTL(x) (x & 0x0200) + +// macros to encode connection transforms +#define CONN_TRANSFORM_SRC_ENCODE(x) ((x & 0x000F) << 10) +#define CONN_TRANSFORM_CTL_ENCODE(x) ((x & 0x000F) << 4) +#define CONN_TRANSFORM_DST_ENCODE(x) (x & 0x000F) +#define CONN_TRANSFORM_BIPOLAR_SRC_ENCODE(x) ((x) ? 0x4000 : 0) +#define CONN_TRANSFORM_BIPOLAR_CTL_ENCODE(x) ((x) ? 0x0100 : 0) +#define CONN_TRANSFORM_INVERT_SRC_ENCODE(x) ((x) ? 0x8000 : 0) +#define CONN_TRANSFORM_INVERT_CTL_ENCODE(x) ((x) ? 0x0200 : 0) + +#define DRUM_TYPE_MASK 0x80000000 + +#define F_RGN_OPTION_SELFNONEXCLUSIVE 0x0001 + +#define F_WAVELINK_PHASE_MASTER 0x0001 +#define F_WAVELINK_MULTICHANNEL 0x0002 + +#define F_WSMP_NO_TRUNCATION 0x0001 +#define F_WSMP_NO_COMPRESSION 0x0002 + +#define MIDI_BANK_COARSE(x) ((x & 0x00007F00) >> 8) // CC0 +#define MIDI_BANK_FINE(x) (x & 0x0000007F) // CC32 +#define MIDI_BANK_MERGE(coarse, fine) ((((uint16_t) coarse) << 7) | fine) // CC0 + CC32 +#define MIDI_BANK_ENCODE(coarse, fine) (((coarse & 0x0000007F) << 8) | (fine & 0x0000007F)) + namespace DLS { // *************** Connection *************** @@ -42,28 +86,53 @@ ControlBipolar = CONN_TRANSFORM_BIPOLAR_CTL(Header->transform); } + Connection::conn_block_t Connection::ToConnBlock() { + conn_block_t c; + c.source = Source; + c.control = Control; + c.destination = Destination; + c.scale = Scale; + c.transform = CONN_TRANSFORM_SRC_ENCODE(SourceTransform) | + CONN_TRANSFORM_CTL_ENCODE(ControlTransform) | + CONN_TRANSFORM_DST_ENCODE(DestinationTransform) | + CONN_TRANSFORM_INVERT_SRC_ENCODE(SourceInvert) | + CONN_TRANSFORM_BIPOLAR_SRC_ENCODE(SourceBipolar) | + CONN_TRANSFORM_INVERT_CTL_ENCODE(ControlInvert) | + CONN_TRANSFORM_BIPOLAR_CTL_ENCODE(ControlBipolar); + return c; + } + // *************** Articulation *************** // * - Articulation::Articulation(RIFF::List* artList) { - if (artList->GetListType() != LIST_TYPE_ART2 && - artList->GetListType() != LIST_TYPE_ART1) { - throw DLS::Exception(" or chunk expected"); - } - uint32_t headerSize = artList->ReadUint32(); - Connections = artList->ReadUint32(); - artList->SetPos(headerSize); + /** @brief Constructor. + * + * Expects an 'artl' or 'art2' chunk to be given where the articulation + * connections will be read from. + * + * @param artl - pointer to an 'artl' or 'art2' chunk + * @throws Exception if no 'artl' or 'art2' chunk was given + */ + Articulation::Articulation(RIFF::Chunk* artl) { + pArticulationCk = artl; + if (artl->GetChunkID() != CHUNK_ID_ART2 && + artl->GetChunkID() != CHUNK_ID_ARTL) { + throw DLS::Exception(" or chunk expected"); + } + HeaderSize = artl->ReadUint32(); + Connections = artl->ReadUint32(); + artl->SetPos(HeaderSize); pConnections = new Connection[Connections]; Connection::conn_block_t connblock; - for (uint32_t i = 0; i <= Connections; i++) { - artList->Read(&connblock.source, 1, 2); - artList->Read(&connblock.control, 1, 2); - artList->Read(&connblock.destination, 1, 2); - artList->Read(&connblock.transform, 1, 2); - artList->Read(&connblock.scale, 1, 4); + for (uint32_t i = 0; i < Connections; i++) { + artl->Read(&connblock.source, 1, 2); + artl->Read(&connblock.control, 1, 2); + artl->Read(&connblock.destination, 1, 2); + artl->Read(&connblock.transform, 1, 2); + artl->Read(&connblock.scale, 1, 4); pConnections[i].Init(&connblock); } } @@ -72,6 +141,28 @@ if (pConnections) delete[] pConnections; } + /** + * Apply articulation connections to the respective RIFF chunks. You + * have to call File::Save() to make changes persistent. + * + * @param pProgress - callback function for progress notification + */ + void Articulation::UpdateChunks(progress_t* pProgress) { + const int iEntrySize = 12; // 12 bytes per connection block + pArticulationCk->Resize(HeaderSize + Connections * iEntrySize); + uint8_t* pData = (uint8_t*) pArticulationCk->LoadChunkData(); + store16(&pData[0], HeaderSize); + store16(&pData[2], Connections); + for (uint32_t i = 0; i < Connections; i++) { + Connection::conn_block_t c = pConnections[i].ToConnBlock(); + store16(&pData[HeaderSize + i * iEntrySize], c.source); + store16(&pData[HeaderSize + i * iEntrySize + 2], c.control); + store16(&pData[HeaderSize + i * iEntrySize + 4], c.destination); + store16(&pData[HeaderSize + i * iEntrySize + 6], c.transform); + store32(&pData[HeaderSize + i * iEntrySize + 8], c.scale); + } + } + // *************** Articulator *************** @@ -100,15 +191,15 @@ RIFF::List* lart = pParentList->GetSubList(LIST_TYPE_LAR2); if (!lart) lart = pParentList->GetSubList(LIST_TYPE_LART); if (lart) { - uint32_t artCkType = (lart->GetListType() == LIST_TYPE_LAR2) ? LIST_TYPE_ART2 - : LIST_TYPE_ART1; - RIFF::List* art = lart->GetFirstSubList(); + uint32_t artCkType = (lart->GetListType() == LIST_TYPE_LAR2) ? CHUNK_ID_ART2 + : CHUNK_ID_ARTL; + RIFF::Chunk* art = lart->GetFirstSubChunk(); while (art) { - if (art->GetListType() == artCkType) { + if (art->GetChunkID() == artCkType) { if (!pArticulations) pArticulations = new ArticulationList; pArticulations->push_back(new Articulation(art)); } - art = lart->GetNextSubList(); + art = lart->GetNextSubChunk(); } } } @@ -125,12 +216,45 @@ } } + /** + * Apply all articulations to the respective RIFF chunks. You have to + * call File::Save() to make changes persistent. + * + * @param pProgress - callback function for progress notification + */ + void Articulator::UpdateChunks(progress_t* pProgress) { + if (pArticulations) { + ArticulationList::iterator iter = pArticulations->begin(); + ArticulationList::iterator end = pArticulations->end(); + for (; iter != end; ++iter) { + (*iter)->UpdateChunks(pProgress); + } + } + } + + /** + * Not yet implemented in this version, since the .gig format does + * not need to copy DLS articulators and so far nobody used pure + * DLS instrument AFAIK. + */ + void Articulator::CopyAssign(const Articulator* orig) { + //TODO: implement deep copy assignment for this class + } + // *************** Info *************** // * + /** @brief Constructor. + * + * Initializes the info strings with values provided by an INFO list chunk. + * + * @param list - pointer to a list chunk which contains an INFO list chunk + */ Info::Info(RIFF::List* list) { + pFixedStringLengths = NULL; + pResourceListChunk = list; if (list) { RIFF::List* lstINFO = list->GetSubList(LIST_TYPE_INFO); if (lstINFO) { @@ -150,8 +274,157 @@ LoadString(CHUNK_ID_ISRC, lstINFO, Source); LoadString(CHUNK_ID_ISRF, lstINFO, SourceForm); LoadString(CHUNK_ID_ICMS, lstINFO, Commissioned); + LoadString(CHUNK_ID_ISBJ, lstINFO, Subject); + } + } + } + + Info::~Info() { + } + + /** + * Forces specific Info fields to be of a fixed length when being saved + * to a file. By default the respective RIFF chunk of an Info field + * will have a size analogue to its actual string length. With this + * method however this behavior can be overridden, allowing to force an + * arbitrary fixed size individually for each Info field. + * + * This method is used as a workaround for the gig format, not for DLS. + * + * @param lengths - NULL terminated array of string_length_t elements + */ + void Info::SetFixedStringLengths(const string_length_t* lengths) { + pFixedStringLengths = lengths; + } + + /** @brief Load given INFO field. + * + * Load INFO field from INFO chunk with chunk ID \a ChunkID from INFO + * list chunk \a lstINFO and save value to \a s. + */ + void Info::LoadString(uint32_t ChunkID, RIFF::List* lstINFO, String& s) { + RIFF::Chunk* ck = lstINFO->GetSubChunk(ChunkID); + ::LoadString(ck, s); // function from helper.h + } + + /** @brief Apply given INFO field to the respective chunk. + * + * Apply given info value to info chunk with ID \a ChunkID, which is a + * subchunk of INFO list chunk \a lstINFO. If the given chunk already + * exists, value \a s will be applied. Otherwise if it doesn't exist yet + * and either \a s or \a sDefault is not an empty string, such a chunk + * will be created and either \a s or \a sDefault will be applied + * (depending on which one is not an empty string, if both are not an + * empty string \a s will be preferred). + * + * @param ChunkID - 32 bit RIFF chunk ID of INFO subchunk + * @param lstINFO - parent (INFO) RIFF list chunk + * @param s - current value of info field + * @param sDefault - default value + */ + void Info::SaveString(uint32_t ChunkID, RIFF::List* lstINFO, const String& s, const String& sDefault) { + int size = 0; + if (pFixedStringLengths) { + for (int i = 0 ; pFixedStringLengths[i].length ; i++) { + if (pFixedStringLengths[i].chunkId == ChunkID) { + size = pFixedStringLengths[i].length; + break; + } } } + RIFF::Chunk* ck = lstINFO->GetSubChunk(ChunkID); + ::SaveString(ChunkID, ck, lstINFO, s, sDefault, size != 0, size); // function from helper.h + } + + /** @brief Update chunks with current info values. + * + * Apply current INFO field values to the respective INFO chunks. You + * have to call File::Save() to make changes persistent. + * + * @param pProgress - callback function for progress notification + */ + void Info::UpdateChunks(progress_t* pProgress) { + if (!pResourceListChunk) return; + + // make sure INFO list chunk exists + RIFF::List* lstINFO = pResourceListChunk->GetSubList(LIST_TYPE_INFO); + + String defaultName = ""; + String defaultCreationDate = ""; + String defaultSoftware = ""; + String defaultComments = ""; + + uint32_t resourceType = pResourceListChunk->GetListType(); + + if (!lstINFO) { + lstINFO = pResourceListChunk->AddSubList(LIST_TYPE_INFO); + + // assemble default values + defaultName = "NONAME"; + + if (resourceType == RIFF_TYPE_DLS) { + // get current date + time_t now = time(NULL); + tm* pNowBroken = localtime(&now); + char buf[11]; + strftime(buf, 11, "%F", pNowBroken); + defaultCreationDate = buf; + + defaultComments = "Created with " + libraryName() + " " + libraryVersion(); + } + if (resourceType == RIFF_TYPE_DLS || resourceType == LIST_TYPE_INS) + { + defaultSoftware = libraryName() + " " + libraryVersion(); + } + } + + // save values + + SaveString(CHUNK_ID_IARL, lstINFO, ArchivalLocation, String("")); + SaveString(CHUNK_ID_IART, lstINFO, Artists, String("")); + SaveString(CHUNK_ID_ICMS, lstINFO, Commissioned, String("")); + SaveString(CHUNK_ID_ICMT, lstINFO, Comments, defaultComments); + SaveString(CHUNK_ID_ICOP, lstINFO, Copyright, String("")); + SaveString(CHUNK_ID_ICRD, lstINFO, CreationDate, defaultCreationDate); + SaveString(CHUNK_ID_IENG, lstINFO, Engineer, String("")); + SaveString(CHUNK_ID_IGNR, lstINFO, Genre, String("")); + SaveString(CHUNK_ID_IKEY, lstINFO, Keywords, String("")); + SaveString(CHUNK_ID_IMED, lstINFO, Medium, String("")); + SaveString(CHUNK_ID_INAM, lstINFO, Name, defaultName); + SaveString(CHUNK_ID_IPRD, lstINFO, Product, String("")); + SaveString(CHUNK_ID_ISBJ, lstINFO, Subject, String("")); + SaveString(CHUNK_ID_ISFT, lstINFO, Software, defaultSoftware); + SaveString(CHUNK_ID_ISRC, lstINFO, Source, String("")); + SaveString(CHUNK_ID_ISRF, lstINFO, SourceForm, String("")); + SaveString(CHUNK_ID_ITCH, lstINFO, Technician, String("")); + } + + /** + * Make a deep copy of the Info object given by @a orig and assign it to + * this object. + * + * @param orig - original Info object to be copied from + */ + void Info::CopyAssign(const Info* orig) { + Name = orig->Name; + ArchivalLocation = orig->ArchivalLocation; + CreationDate = orig->CreationDate; + Comments = orig->Comments; + Product = orig->Product; + Copyright = orig->Copyright; + Artists = orig->Artists; + Genre = orig->Genre; + Keywords = orig->Keywords; + Engineer = orig->Engineer; + Technician = orig->Technician; + Software = orig->Software; + Medium = orig->Medium; + Source = orig->Source; + SourceForm = orig->SourceForm; + Commissioned = orig->Commissioned; + Subject = orig->Subject; + //FIXME: hmm, is copying this pointer a good idea? + pFixedStringLengths = orig->pFixedStringLengths; } @@ -159,8 +432,18 @@ // *************** Resource *************** // * + /** @brief Constructor. + * + * Initializes the 'Resource' object with values provided by a given + * INFO list chunk and a DLID chunk (the latter optional). + * + * @param Parent - pointer to parent 'Resource', NULL if this is + * the toplevel 'Resource' object + * @param lstResource - pointer to an INFO list chunk + */ Resource::Resource(Resource* Parent, RIFF::List* lstResource) { pParent = Parent; + pResourceList = lstResource; pInfo = new Info(lstResource); @@ -180,28 +463,118 @@ if (pInfo) delete pInfo; } + /** @brief Update chunks with current Resource data. + * + * Apply Resource data persistently below the previously given resource + * list chunk. This will currently only include the INFO data. The DLSID + * will not be applied at the moment (yet). + * + * You have to call File::Save() to make changes persistent. + * + * @param pProgress - callback function for progress notification + */ + void Resource::UpdateChunks(progress_t* pProgress) { + pInfo->UpdateChunks(pProgress); + + if (pDLSID) { + // make sure 'dlid' chunk exists + RIFF::Chunk* ckDLSID = pResourceList->GetSubChunk(CHUNK_ID_DLID); + if (!ckDLSID) ckDLSID = pResourceList->AddSubChunk(CHUNK_ID_DLID, 16); + uint8_t* pData = (uint8_t*)ckDLSID->LoadChunkData(); + // update 'dlid' chunk + store32(&pData[0], pDLSID->ulData1); + store16(&pData[4], pDLSID->usData2); + store16(&pData[6], pDLSID->usData3); + memcpy(&pData[8], pDLSID->abData, 8); + } + } + + /** + * Generates a new DLSID for the resource. + */ + void Resource::GenerateDLSID() { +#if defined(WIN32) || defined(__APPLE__) || defined(HAVE_UUID_GENERATE) + + if (!pDLSID) pDLSID = new dlsid_t; + +#ifdef WIN32 + + UUID uuid; + UuidCreate(&uuid); + pDLSID->ulData1 = uuid.Data1; + pDLSID->usData2 = uuid.Data2; + pDLSID->usData3 = uuid.Data3; + memcpy(pDLSID->abData, uuid.Data4, 8); + +#elif defined(__APPLE__) + + CFUUIDRef uuidRef = CFUUIDCreate(NULL); + CFUUIDBytes uuid = CFUUIDGetUUIDBytes(uuidRef); + CFRelease(uuidRef); + pDLSID->ulData1 = uuid.byte0 | uuid.byte1 << 8 | uuid.byte2 << 16 | uuid.byte3 << 24; + pDLSID->usData2 = uuid.byte4 | uuid.byte5 << 8; + pDLSID->usData3 = uuid.byte6 | uuid.byte7 << 8; + pDLSID->abData[0] = uuid.byte8; + pDLSID->abData[1] = uuid.byte9; + pDLSID->abData[2] = uuid.byte10; + pDLSID->abData[3] = uuid.byte11; + pDLSID->abData[4] = uuid.byte12; + pDLSID->abData[5] = uuid.byte13; + pDLSID->abData[6] = uuid.byte14; + pDLSID->abData[7] = uuid.byte15; +#else + uuid_t uuid; + uuid_generate(uuid); + pDLSID->ulData1 = uuid[0] | uuid[1] << 8 | uuid[2] << 16 | uuid[3] << 24; + pDLSID->usData2 = uuid[4] | uuid[5] << 8; + pDLSID->usData3 = uuid[6] | uuid[7] << 8; + memcpy(pDLSID->abData, &uuid[8], 8); +#endif +#endif + } + + /** + * Make a deep copy of the Resource object given by @a orig and assign it + * to this object. + * + * @param orig - original Resource object to be copied from + */ + void Resource::CopyAssign(const Resource* orig) { + pInfo->CopyAssign(orig->pInfo); + } // *************** Sampler *************** // * Sampler::Sampler(RIFF::List* ParentList) { + pParentList = ParentList; RIFF::Chunk* wsmp = ParentList->GetSubChunk(CHUNK_ID_WSMP); - if (!wsmp) throw DLS::Exception("Mandatory chunk not found."); - uint32_t headersize = wsmp->ReadUint32(); - UnityNote = wsmp->ReadUint16(); - FineTune = wsmp->ReadInt16(); - Gain = wsmp->ReadInt32(); - SamplerOptions = wsmp->ReadUint32(); + if (wsmp) { + uiHeaderSize = wsmp->ReadUint32(); + UnityNote = wsmp->ReadUint16(); + FineTune = wsmp->ReadInt16(); + Gain = wsmp->ReadInt32(); + SamplerOptions = wsmp->ReadUint32(); + SampleLoops = wsmp->ReadUint32(); + } else { // 'wsmp' chunk missing + uiHeaderSize = 20; + UnityNote = 60; + FineTune = 0; // +- 0 cents + Gain = 0; // 0 dB + SamplerOptions = F_WSMP_NO_COMPRESSION; + SampleLoops = 0; + } NoSampleDepthTruncation = SamplerOptions & F_WSMP_NO_TRUNCATION; NoSampleCompression = SamplerOptions & F_WSMP_NO_COMPRESSION; - SampleLoops = wsmp->ReadUint32(); pSampleLoops = (SampleLoops) ? new sample_loop_t[SampleLoops] : NULL; - wsmp->SetPos(headersize); - for (uint32_t i = 0; i < SampleLoops; i++) { - wsmp->Read(pSampleLoops + i, 4, 4); - if (pSampleLoops[i].Size > sizeof(sample_loop_t)) { // if loop struct was extended - wsmp->SetPos(pSampleLoops[i].Size - sizeof(sample_loop_t), RIFF::stream_curpos); + if (SampleLoops) { + wsmp->SetPos(uiHeaderSize); + for (uint32_t i = 0; i < SampleLoops; i++) { + wsmp->Read(pSampleLoops + i, 4, 4); + if (pSampleLoops[i].Size > sizeof(sample_loop_t)) { // if loop struct was extended + wsmp->SetPos(pSampleLoops[i].Size - sizeof(sample_loop_t), RIFF::stream_curpos); + } } } } @@ -210,45 +583,320 @@ if (pSampleLoops) delete[] pSampleLoops; } + void Sampler::SetGain(int32_t gain) { + Gain = gain; + } + + /** + * Apply all sample player options to the respective RIFF chunk. You + * have to call File::Save() to make changes persistent. + * + * @param pProgress - callback function for progress notification + */ + void Sampler::UpdateChunks(progress_t* pProgress) { + // make sure 'wsmp' chunk exists + RIFF::Chunk* wsmp = pParentList->GetSubChunk(CHUNK_ID_WSMP); + int wsmpSize = uiHeaderSize + SampleLoops * 16; + if (!wsmp) { + wsmp = pParentList->AddSubChunk(CHUNK_ID_WSMP, wsmpSize); + } else if (wsmp->GetSize() != wsmpSize) { + wsmp->Resize(wsmpSize); + } + uint8_t* pData = (uint8_t*) wsmp->LoadChunkData(); + // update headers size + store32(&pData[0], uiHeaderSize); + // update respective sampler options bits + SamplerOptions = (NoSampleDepthTruncation) ? SamplerOptions | F_WSMP_NO_TRUNCATION + : SamplerOptions & (~F_WSMP_NO_TRUNCATION); + SamplerOptions = (NoSampleCompression) ? SamplerOptions | F_WSMP_NO_COMPRESSION + : SamplerOptions & (~F_WSMP_NO_COMPRESSION); + store16(&pData[4], UnityNote); + store16(&pData[6], FineTune); + store32(&pData[8], Gain); + store32(&pData[12], SamplerOptions); + store32(&pData[16], SampleLoops); + // update loop definitions + for (uint32_t i = 0; i < SampleLoops; i++) { + //FIXME: this does not handle extended loop structs correctly + store32(&pData[uiHeaderSize + i * 16], pSampleLoops[i].Size); + store32(&pData[uiHeaderSize + i * 16 + 4], pSampleLoops[i].LoopType); + store32(&pData[uiHeaderSize + i * 16 + 8], pSampleLoops[i].LoopStart); + store32(&pData[uiHeaderSize + i * 16 + 12], pSampleLoops[i].LoopLength); + } + } + + /** + * Adds a new sample loop with the provided loop definition. + * + * @param pLoopDef - points to a loop definition that is to be copied + */ + void Sampler::AddSampleLoop(sample_loop_t* pLoopDef) { + sample_loop_t* pNewLoops = new sample_loop_t[SampleLoops + 1]; + // copy old loops array + for (int i = 0; i < SampleLoops; i++) { + pNewLoops[i] = pSampleLoops[i]; + } + // add the new loop + pNewLoops[SampleLoops] = *pLoopDef; + // auto correct size field + pNewLoops[SampleLoops].Size = sizeof(DLS::sample_loop_t); + // free the old array and update the member variables + if (SampleLoops) delete[] pSampleLoops; + pSampleLoops = pNewLoops; + SampleLoops++; + } + + /** + * Deletes an existing sample loop. + * + * @param pLoopDef - pointer to existing loop definition + * @throws Exception - if given loop definition does not exist + */ + void Sampler::DeleteSampleLoop(sample_loop_t* pLoopDef) { + sample_loop_t* pNewLoops = new sample_loop_t[SampleLoops - 1]; + // copy old loops array (skipping given loop) + for (int i = 0, o = 0; i < SampleLoops; i++) { + if (&pSampleLoops[i] == pLoopDef) continue; + if (o == SampleLoops - 1) { + delete[] pNewLoops; + throw Exception("Could not delete Sample Loop, because it does not exist"); + } + pNewLoops[o] = pSampleLoops[i]; + o++; + } + // free the old array and update the member variables + if (SampleLoops) delete[] pSampleLoops; + pSampleLoops = pNewLoops; + SampleLoops--; + } + + /** + * Make a deep copy of the Sampler object given by @a orig and assign it + * to this object. + * + * @param orig - original Sampler object to be copied from + */ + void Sampler::CopyAssign(const Sampler* orig) { + // copy trivial scalars + UnityNote = orig->UnityNote; + FineTune = orig->FineTune; + Gain = orig->Gain; + NoSampleDepthTruncation = orig->NoSampleDepthTruncation; + NoSampleCompression = orig->NoSampleCompression; + SamplerOptions = orig->SamplerOptions; + + // copy sample loops + if (SampleLoops) delete[] pSampleLoops; + pSampleLoops = new sample_loop_t[orig->SampleLoops]; + memcpy(pSampleLoops, orig->pSampleLoops, orig->SampleLoops * sizeof(sample_loop_t)); + SampleLoops = orig->SampleLoops; + } // *************** Sample *************** // * - Sample::Sample(File* pFile, RIFF::List* waveList, unsigned long WavePoolOffset) : Resource(pFile, waveList) { - ulWavePoolOffset = WavePoolOffset - LIST_HEADER_SIZE; + /** @brief Constructor. + * + * Load an existing sample or create a new one. A 'wave' list chunk must + * be given to this constructor. In case the given 'wave' list chunk + * contains a 'fmt' and 'data' chunk, the format and sample data will be + * loaded from there, otherwise default values will be used and those + * chunks will be created when File::Save() will be called later on. + * + * @param pFile - pointer to DLS::File where this sample is + * located (or will be located) + * @param waveList - pointer to 'wave' list chunk which is (or + * will be) associated with this sample + * @param WavePoolOffset - offset of this sample data from wave pool + * ('wvpl') list chunk + */ + Sample::Sample(File* pFile, RIFF::List* waveList, file_offset_t WavePoolOffset) : Resource(pFile, waveList) { + pWaveList = waveList; + ullWavePoolOffset = WavePoolOffset - LIST_HEADER_SIZE(waveList->GetFile()->GetFileOffsetSize()); pCkFormat = waveList->GetSubChunk(CHUNK_ID_FMT); pCkData = waveList->GetSubChunk(CHUNK_ID_DATA); - if (!pCkFormat || !pCkData) throw DLS::Exception("Mandatory chunks in wave list not found."); + if (pCkFormat) { + // common fields + FormatTag = pCkFormat->ReadUint16(); + Channels = pCkFormat->ReadUint16(); + SamplesPerSecond = pCkFormat->ReadUint32(); + AverageBytesPerSecond = pCkFormat->ReadUint32(); + BlockAlign = pCkFormat->ReadUint16(); + // PCM format specific + if (FormatTag == DLS_WAVE_FORMAT_PCM) { + BitDepth = pCkFormat->ReadUint16(); + FrameSize = (BitDepth / 8) * Channels; + } else { // unsupported sample data format + BitDepth = 0; + FrameSize = 0; + } + } else { // 'fmt' chunk missing + FormatTag = DLS_WAVE_FORMAT_PCM; + BitDepth = 16; + Channels = 1; + SamplesPerSecond = 44100; + AverageBytesPerSecond = (BitDepth / 8) * SamplesPerSecond * Channels; + FrameSize = (BitDepth / 8) * Channels; + BlockAlign = FrameSize; + } + SamplesTotal = (pCkData) ? (FormatTag == DLS_WAVE_FORMAT_PCM) ? pCkData->GetSize() / FrameSize + : 0 + : 0; + } - // common fields - FormatTag = pCkFormat->ReadUint16(); - Channels = pCkFormat->ReadUint16(); - SamplesPerSecond = pCkFormat->ReadUint32(); - AverageBytesPerSecond = pCkFormat->ReadUint32(); - BlockAlign = pCkFormat->ReadUint16(); - - // PCM format specific - if (FormatTag == WAVE_FORMAT_PCM) { - BitDepth = pCkFormat->ReadUint16(); - FrameSize = (FormatTag == WAVE_FORMAT_PCM) ? (BitDepth / 8) * Channels - : 0; - SamplesTotal = (FormatTag == WAVE_FORMAT_PCM) ? pCkData->GetSize() / FrameSize - : 0; - } - else { - BitDepth = 0; - FrameSize = 0; - SamplesTotal = 0; + /** @brief Destructor. + * + * Removes RIFF chunks associated with this Sample and frees all + * memory occupied by this sample. + */ + Sample::~Sample() { + RIFF::List* pParent = pWaveList->GetParent(); + pParent->DeleteSubChunk(pWaveList); + } + + /** + * Make a deep copy of the Sample object given by @a orig (without the + * actual sample waveform data however) and assign it to this object. + * + * This is a special internal variant of CopyAssign() which only copies the + * most mandatory member variables. It will be called by gig::Sample + * descendent instead of CopyAssign() since gig::Sample has its own + * implementation to access and copy the actual sample waveform data. + * + * @param orig - original Sample object to be copied from + */ + void Sample::CopyAssignCore(const Sample* orig) { + // handle base classes + Resource::CopyAssign(orig); + // handle actual own attributes of this class + FormatTag = orig->FormatTag; + Channels = orig->Channels; + SamplesPerSecond = orig->SamplesPerSecond; + AverageBytesPerSecond = orig->AverageBytesPerSecond; + BlockAlign = orig->BlockAlign; + BitDepth = orig->BitDepth; + SamplesTotal = orig->SamplesTotal; + FrameSize = orig->FrameSize; + } + + /** + * Make a deep copy of the Sample object given by @a orig and assign it to + * this object. + * + * @param orig - original Sample object to be copied from + */ + void Sample::CopyAssign(const Sample* orig) { + CopyAssignCore(orig); + + // copy sample waveform data (reading directly from disc) + Resize(orig->GetSize()); + char* buf = (char*) LoadSampleData(); + Sample* pOrig = (Sample*) orig; //HACK: circumventing the constness here for now + const file_offset_t restorePos = pOrig->pCkData->GetPos(); + pOrig->SetPos(0); + for (file_offset_t todo = pOrig->GetSize(), i = 0; todo; ) { + const int iReadAtOnce = 64*1024; + file_offset_t n = (iReadAtOnce < todo) ? iReadAtOnce : todo; + n = pOrig->Read(&buf[i], n); + if (!n) break; + todo -= n; + i += (n * pOrig->FrameSize); } + pOrig->pCkData->SetPos(restorePos); } + /** @brief Load sample data into RAM. + * + * In case the respective 'data' chunk exists, the sample data will be + * loaded into RAM (if not done already) and a pointer to the data in + * RAM will be returned. If this is a new sample, you have to call + * Resize() with the desired sample size to create the mandatory RIFF + * chunk for the sample wave data. + * + * You can call LoadChunkData() again if you previously scheduled to + * enlarge the sample data RIFF chunk with a Resize() call. In that case + * the buffer will be enlarged to the new, scheduled size and you can + * already place the sample wave data to the buffer and finally call + * File::Save() to enlarge the sample data's chunk physically and write + * the new sample wave data in one rush. This approach is definitely + * recommended if you have to enlarge and write new sample data to a lot + * of samples. + * + * Caution: the buffer pointer will be invalidated once + * File::Save() was called. You have to call LoadChunkData() again to + * get a new, valid pointer whenever File::Save() was called. + * + * @returns pointer to sample data in RAM, NULL in case respective + * 'data' chunk does not exist (yet) + * @throws Exception if data buffer could not be enlarged + * @see Resize(), File::Save() + */ void* Sample::LoadSampleData() { - return pCkData->LoadChunkData(); + return (pCkData) ? pCkData->LoadChunkData() : NULL; } + /** @brief Free sample data from RAM. + * + * In case sample data was previously successfully loaded into RAM with + * LoadSampleData(), this method will free the sample data from RAM. + */ void Sample::ReleaseSampleData() { - pCkData->ReleaseChunkData(); + if (pCkData) pCkData->ReleaseChunkData(); + } + + /** @brief Returns sample size. + * + * Returns the sample wave form's data size (in sample points). This is + * actually the current, physical size (converted to sample points) of + * the RIFF chunk which encapsulates the sample's wave data. The + * returned value is dependant to the current FrameSize value. + * + * @returns number of sample points or 0 if FormatTag != DLS_WAVE_FORMAT_PCM + * @see FrameSize, FormatTag + */ + file_offset_t Sample::GetSize() const { + if (FormatTag != DLS_WAVE_FORMAT_PCM) return 0; + return (pCkData) ? pCkData->GetSize() / FrameSize : 0; + } + + /** @brief Resize sample. + * + * Resizes the sample's wave form data, that is the actual size of + * sample wave data possible to be written for this sample. This call + * will return immediately and just schedule the resize operation. You + * should call File::Save() to actually perform the resize operation(s) + * "physically" to the file. As this can take a while on large files, it + * is recommended to call Resize() first on all samples which have to be + * resized and finally to call File::Save() to perform all those resize + * operations in one rush. + * + * The actual size (in bytes) is dependant to the current FrameSize + * value. You may want to set FrameSize before calling Resize(). + * + * Caution: You cannot directly write to enlarged samples before + * calling File::Save() as this might exceed the current sample's + * boundary! + * + * Also note: only DLS_WAVE_FORMAT_PCM is currently supported, that is + * FormatTag must be DLS_WAVE_FORMAT_PCM. Trying to resize samples with + * other formats will fail! + * + * @param NewSize - new sample wave data size in sample points (must be + * greater than zero) + * @throws Exception if FormatTag != DLS_WAVE_FORMAT_PCM + * @throws Exception if \a NewSize is less than 1 or unrealistic large + * @see File::Save(), FrameSize, FormatTag + */ + void Sample::Resize(file_offset_t NewSize) { + if (FormatTag != DLS_WAVE_FORMAT_PCM) throw Exception("Sample's format is not DLS_WAVE_FORMAT_PCM"); + if (NewSize < 1) throw Exception("Sample size must be at least one sample point"); + if ((NewSize >> 48) != 0) + throw Exception("Unrealistic high DLS sample size detected"); + const file_offset_t sizeInBytes = NewSize * FrameSize; + pCkData = pWaveList->GetSubChunk(CHUNK_ID_DATA); + if (pCkData) pCkData->Resize(sizeInBytes); + else pCkData = pWaveList->AddSubChunk(CHUNK_ID_DATA, sizeInBytes); } /** @@ -256,13 +904,22 @@ * bytes). Use this method and Read() if you don't want to load * the sample into RAM, thus for disk streaming. * + * Also note: only DLS_WAVE_FORMAT_PCM is currently supported, that is + * FormatTag must be DLS_WAVE_FORMAT_PCM. Trying to reposition the sample + * with other formats will fail! + * * @param SampleCount number of sample points * @param Whence to which relation \a SampleCount refers to + * @returns new position within the sample, 0 if + * FormatTag != DLS_WAVE_FORMAT_PCM + * @throws Exception if no data RIFF chunk was created for the sample yet + * @see FrameSize, FormatTag */ - unsigned long Sample::SetPos(unsigned long SampleCount, RIFF::stream_whence_t Whence) { - if (FormatTag != WAVE_FORMAT_PCM) return 0; // failed: wave data not PCM format - unsigned long orderedBytes = SampleCount * FrameSize; - unsigned long result = pCkData->SetPos(orderedBytes, Whence); + file_offset_t Sample::SetPos(file_offset_t SampleCount, RIFF::stream_whence_t Whence) { + if (FormatTag != DLS_WAVE_FORMAT_PCM) return 0; // failed: wave data not PCM format + if (!pCkData) throw Exception("No data chunk created for sample yet, call Sample::Resize() to create one"); + file_offset_t orderedBytes = SampleCount * FrameSize; + file_offset_t result = pCkData->SetPos(orderedBytes, Whence); return (result == orderedBytes) ? SampleCount : result / FrameSize; } @@ -276,11 +933,61 @@ * @param pBuffer destination buffer * @param SampleCount number of sample points to read */ - unsigned long Sample::Read(void* pBuffer, unsigned long SampleCount) { - if (FormatTag != WAVE_FORMAT_PCM) return 0; // failed: wave data not PCM format + file_offset_t Sample::Read(void* pBuffer, file_offset_t SampleCount) { + if (FormatTag != DLS_WAVE_FORMAT_PCM) return 0; // failed: wave data not PCM format return pCkData->Read(pBuffer, SampleCount, FrameSize); // FIXME: channel inversion due to endian correction? } + /** @brief Write sample wave data. + * + * Writes \a SampleCount number of sample points from the buffer pointed + * by \a pBuffer and increments the position within the sample. Use this + * method to directly write the sample data to disk, i.e. if you don't + * want or cannot load the whole sample data into RAM. + * + * You have to Resize() the sample to the desired size and call + * File::Save() before using Write(). + * + * @param pBuffer - source buffer + * @param SampleCount - number of sample points to write + * @throws Exception if current sample size is too small + * @see LoadSampleData() + */ + file_offset_t Sample::Write(void* pBuffer, file_offset_t SampleCount) { + if (FormatTag != DLS_WAVE_FORMAT_PCM) return 0; // failed: wave data not PCM format + if (GetSize() < SampleCount) throw Exception("Could not write sample data, current sample size to small"); + return pCkData->Write(pBuffer, SampleCount, FrameSize); // FIXME: channel inversion due to endian correction? + } + + /** + * Apply sample and its settings to the respective RIFF chunks. You have + * to call File::Save() to make changes persistent. + * + * @param pProgress - callback function for progress notification + * @throws Exception if FormatTag != DLS_WAVE_FORMAT_PCM or no sample data + * was provided yet + */ + void Sample::UpdateChunks(progress_t* pProgress) { + if (FormatTag != DLS_WAVE_FORMAT_PCM) + throw Exception("Could not save sample, only PCM format is supported"); + // we refuse to do anything if not sample wave form was provided yet + if (!pCkData) + throw Exception("Could not save sample, there is no sample data to save"); + // update chunks of base class as well + Resource::UpdateChunks(pProgress); + // make sure 'fmt' chunk exists + RIFF::Chunk* pCkFormat = pWaveList->GetSubChunk(CHUNK_ID_FMT); + if (!pCkFormat) pCkFormat = pWaveList->AddSubChunk(CHUNK_ID_FMT, 16); // assumes PCM format + uint8_t* pData = (uint8_t*) pCkFormat->LoadChunkData(); + // update 'fmt' chunk + store16(&pData[0], FormatTag); + store16(&pData[2], Channels); + store32(&pData[4], SamplesPerSecond); + store32(&pData[8], AverageBytesPerSecond); + store16(&pData[12], BlockAlign); + store16(&pData[14], BitDepth); // assuming PCM format + } + // *************** Region *************** @@ -289,64 +996,250 @@ Region::Region(Instrument* pInstrument, RIFF::List* rgnList) : Resource(pInstrument, rgnList), Articulator(rgnList), Sampler(rgnList) { pCkRegion = rgnList; + // articulation information RIFF::Chunk* rgnh = rgnList->GetSubChunk(CHUNK_ID_RGNH); - rgnh->Read(&KeyRange, 2, 2); - rgnh->Read(&VelocityRange, 2, 2); - uint16_t optionflags = rgnh->ReadUint16(); - SelfNonExclusive = optionflags & F_RGN_OPTION_SELFNONEXCLUSIVE; - KeyGroup = rgnh->ReadUint16(); - // Layer is optional - if (rgnh->RemainingBytes() >= sizeof(uint16_t)) { - rgnh->Read(&Layer, 1, sizeof(uint16_t)); + if (rgnh) { + rgnh->Read(&KeyRange, 2, 2); + rgnh->Read(&VelocityRange, 2, 2); + FormatOptionFlags = rgnh->ReadUint16(); + KeyGroup = rgnh->ReadUint16(); + // Layer is optional + if (rgnh->RemainingBytes() >= sizeof(uint16_t)) { + rgnh->Read(&Layer, 1, sizeof(uint16_t)); + } else Layer = 0; + } else { // 'rgnh' chunk is missing + KeyRange.low = 0; + KeyRange.high = 127; + VelocityRange.low = 0; + VelocityRange.high = 127; + FormatOptionFlags = F_RGN_OPTION_SELFNONEXCLUSIVE; + KeyGroup = 0; + Layer = 0; } - else Layer = 0; + SelfNonExclusive = FormatOptionFlags & F_RGN_OPTION_SELFNONEXCLUSIVE; + // sample information RIFF::Chunk* wlnk = rgnList->GetSubChunk(CHUNK_ID_WLNK); - optionflags = wlnk->ReadUint16(); - PhaseMaster = optionflags & F_WAVELINK_PHASE_MASTER; - MultiChannel = optionflags & F_WAVELINK_MULTICHANNEL; - PhaseGroup = wlnk->ReadUint16(); - Channel = wlnk->ReadUint32(); - WavePoolTableIndex = wlnk->ReadUint32(); + if (wlnk) { + WaveLinkOptionFlags = wlnk->ReadUint16(); + PhaseGroup = wlnk->ReadUint16(); + Channel = wlnk->ReadUint32(); + WavePoolTableIndex = wlnk->ReadUint32(); + } else { // 'wlnk' chunk is missing + WaveLinkOptionFlags = 0; + PhaseGroup = 0; + Channel = 0; // mono + WavePoolTableIndex = 0; // first entry in wave pool table + } + PhaseMaster = WaveLinkOptionFlags & F_WAVELINK_PHASE_MASTER; + MultiChannel = WaveLinkOptionFlags & F_WAVELINK_MULTICHANNEL; pSample = NULL; } + /** @brief Destructor. + * + * Removes RIFF chunks associated with this Region. + */ Region::~Region() { + RIFF::List* pParent = pCkRegion->GetParent(); + pParent->DeleteSubChunk(pCkRegion); } Sample* Region::GetSample() { if (pSample) return pSample; File* file = (File*) GetParent()->GetParent(); - unsigned long soughtoffset = file->pWavePoolTable[WavePoolTableIndex]; + uint64_t soughtoffset = file->pWavePoolTable[WavePoolTableIndex]; Sample* sample = file->GetFirstSample(); while (sample) { - if (sample->ulWavePoolOffset == soughtoffset) return (pSample = sample); + if (sample->ullWavePoolOffset == soughtoffset) return (pSample = sample); sample = file->GetNextSample(); } return NULL; } + /** + * Assign another sample to this Region. + * + * @param pSample - sample to be assigned + */ + void Region::SetSample(Sample* pSample) { + this->pSample = pSample; + WavePoolTableIndex = 0; // we update this offset when we Save() + } + + /** + * Modifies the key range of this Region and makes sure the respective + * chunks are in correct order. + * + * @param Low - lower end of key range + * @param High - upper end of key range + */ + void Region::SetKeyRange(uint16_t Low, uint16_t High) { + KeyRange.low = Low; + KeyRange.high = High; + + // make sure regions are already loaded + Instrument* pInstrument = (Instrument*) GetParent(); + if (!pInstrument->pRegions) pInstrument->LoadRegions(); + if (!pInstrument->pRegions) return; + + // find the r which is the first one to the right of this region + // at its new position + Region* r = NULL; + Region* prev_region = NULL; + for ( + Instrument::RegionList::iterator iter = pInstrument->pRegions->begin(); + iter != pInstrument->pRegions->end(); iter++ + ) { + if ((*iter)->KeyRange.low > this->KeyRange.low) { + r = *iter; + break; + } + prev_region = *iter; + } + + // place this region before r if it's not already there + if (prev_region != this) pInstrument->MoveRegion(this, r); + } + + /** + * Apply Region settings to the respective RIFF chunks. You have to + * call File::Save() to make changes persistent. + * + * @param pProgress - callback function for progress notification + * @throws Exception - if the Region's sample could not be found + */ + void Region::UpdateChunks(progress_t* pProgress) { + // make sure 'rgnh' chunk exists + RIFF::Chunk* rgnh = pCkRegion->GetSubChunk(CHUNK_ID_RGNH); + if (!rgnh) rgnh = pCkRegion->AddSubChunk(CHUNK_ID_RGNH, Layer ? 14 : 12); + uint8_t* pData = (uint8_t*) rgnh->LoadChunkData(); + FormatOptionFlags = (SelfNonExclusive) + ? FormatOptionFlags | F_RGN_OPTION_SELFNONEXCLUSIVE + : FormatOptionFlags & (~F_RGN_OPTION_SELFNONEXCLUSIVE); + // update 'rgnh' chunk + store16(&pData[0], KeyRange.low); + store16(&pData[2], KeyRange.high); + store16(&pData[4], VelocityRange.low); + store16(&pData[6], VelocityRange.high); + store16(&pData[8], FormatOptionFlags); + store16(&pData[10], KeyGroup); + if (rgnh->GetSize() >= 14) store16(&pData[12], Layer); + + // update chunks of base classes as well (but skip Resource, + // as a rgn doesn't seem to have dlid and INFO chunks) + Articulator::UpdateChunks(pProgress); + Sampler::UpdateChunks(pProgress); + + // make sure 'wlnk' chunk exists + RIFF::Chunk* wlnk = pCkRegion->GetSubChunk(CHUNK_ID_WLNK); + if (!wlnk) wlnk = pCkRegion->AddSubChunk(CHUNK_ID_WLNK, 12); + pData = (uint8_t*) wlnk->LoadChunkData(); + WaveLinkOptionFlags = (PhaseMaster) + ? WaveLinkOptionFlags | F_WAVELINK_PHASE_MASTER + : WaveLinkOptionFlags & (~F_WAVELINK_PHASE_MASTER); + WaveLinkOptionFlags = (MultiChannel) + ? WaveLinkOptionFlags | F_WAVELINK_MULTICHANNEL + : WaveLinkOptionFlags & (~F_WAVELINK_MULTICHANNEL); + // get sample's wave pool table index + int index = -1; + File* pFile = (File*) GetParent()->GetParent(); + if (pFile->pSamples) { + File::SampleList::iterator iter = pFile->pSamples->begin(); + File::SampleList::iterator end = pFile->pSamples->end(); + for (int i = 0; iter != end; ++iter, i++) { + if (*iter == pSample) { + index = i; + break; + } + } + } + WavePoolTableIndex = index; + // update 'wlnk' chunk + store16(&pData[0], WaveLinkOptionFlags); + store16(&pData[2], PhaseGroup); + store32(&pData[4], Channel); + store32(&pData[8], WavePoolTableIndex); + } + + /** + * Make a (semi) deep copy of the Region object given by @a orig and assign + * it to this object. + * + * Note that the sample pointer referenced by @a orig is simply copied as + * memory address. Thus the respective sample is shared, not duplicated! + * + * @param orig - original Region object to be copied from + */ + void Region::CopyAssign(const Region* orig) { + // handle base classes + Resource::CopyAssign(orig); + Articulator::CopyAssign(orig); + Sampler::CopyAssign(orig); + // handle actual own attributes of this class + // (the trivial ones) + VelocityRange = orig->VelocityRange; + KeyGroup = orig->KeyGroup; + Layer = orig->Layer; + SelfNonExclusive = orig->SelfNonExclusive; + PhaseMaster = orig->PhaseMaster; + PhaseGroup = orig->PhaseGroup; + MultiChannel = orig->MultiChannel; + Channel = orig->Channel; + // only take the raw sample reference if the two Region objects are + // part of the same file + if (GetParent()->GetParent() == orig->GetParent()->GetParent()) { + WavePoolTableIndex = orig->WavePoolTableIndex; + pSample = orig->pSample; + } else { + WavePoolTableIndex = -1; + pSample = NULL; + } + FormatOptionFlags = orig->FormatOptionFlags; + WaveLinkOptionFlags = orig->WaveLinkOptionFlags; + // handle the last, a bit sensible attribute + SetKeyRange(orig->KeyRange.low, orig->KeyRange.high); + } // *************** Instrument *************** // * + /** @brief Constructor. + * + * Load an existing instrument definition or create a new one. An 'ins' + * list chunk must be given to this constructor. In case this 'ins' list + * chunk contains a 'insh' chunk, the instrument data fields will be + * loaded from there, otherwise default values will be used and the + * 'insh' chunk will be created once File::Save() was called. + * + * @param pFile - pointer to DLS::File where this instrument is + * located (or will be located) + * @param insList - pointer to 'ins' list chunk which is (or will be) + * associated with this instrument + */ Instrument::Instrument(File* pFile, RIFF::List* insList) : Resource(pFile, insList), Articulator(insList) { pCkInstrument = insList; - RIFF::Chunk* insh = pCkInstrument->GetSubChunk(CHUNK_ID_INSH); - if (!insh) throw DLS::Exception("Mandatory chunks in list chunk not found."); - Regions = insh->ReadUint32(); midi_locale_t locale; - insh->Read(&locale, 2, 4); + RIFF::Chunk* insh = pCkInstrument->GetSubChunk(CHUNK_ID_INSH); + if (insh) { + Regions = insh->ReadUint32(); + insh->Read(&locale, 2, 4); + } else { // 'insh' chunk missing + Regions = 0; + locale.bank = 0; + locale.instrument = 0; + } + MIDIProgram = locale.instrument; IsDrum = locale.bank & DRUM_TYPE_MASK; MIDIBankCoarse = (uint8_t) MIDI_BANK_COARSE(locale.bank); MIDIBankFine = (uint8_t) MIDI_BANK_FINE(locale.bank); MIDIBank = MIDI_BANK_MERGE(MIDIBankCoarse, MIDIBankFine); - pRegions = NULL; + pRegions = NULL; } Region* Instrument::GetFirstRegion() { @@ -363,19 +1256,93 @@ } void Instrument::LoadRegions() { + if (!pRegions) pRegions = new RegionList; RIFF::List* lrgn = pCkInstrument->GetSubList(LIST_TYPE_LRGN); - if (!lrgn) throw DLS::Exception("Mandatory chunks in chunk not found."); - uint32_t regionCkType = (lrgn->GetSubList(LIST_TYPE_RGN2)) ? LIST_TYPE_RGN2 : LIST_TYPE_RGN; // prefer regions level 2 - RIFF::List* rgn = lrgn->GetFirstSubList(); - while (rgn) { - if (rgn->GetListType() == regionCkType) { - if (!pRegions) pRegions = new RegionList; - pRegions->push_back(new Region(this, rgn)); + if (lrgn) { + uint32_t regionCkType = (lrgn->GetSubList(LIST_TYPE_RGN2)) ? LIST_TYPE_RGN2 : LIST_TYPE_RGN; // prefer regions level 2 + RIFF::List* rgn = lrgn->GetFirstSubList(); + while (rgn) { + if (rgn->GetListType() == regionCkType) { + pRegions->push_back(new Region(this, rgn)); + } + rgn = lrgn->GetNextSubList(); } - rgn = lrgn->GetNextSubList(); } } + Region* Instrument::AddRegion() { + if (!pRegions) LoadRegions(); + RIFF::List* lrgn = pCkInstrument->GetSubList(LIST_TYPE_LRGN); + if (!lrgn) lrgn = pCkInstrument->AddSubList(LIST_TYPE_LRGN); + RIFF::List* rgn = lrgn->AddSubList(LIST_TYPE_RGN); + Region* pNewRegion = new Region(this, rgn); + pRegions->push_back(pNewRegion); + Regions = pRegions->size(); + return pNewRegion; + } + + void Instrument::MoveRegion(Region* pSrc, Region* pDst) { + RIFF::List* lrgn = pCkInstrument->GetSubList(LIST_TYPE_LRGN); + lrgn->MoveSubChunk(pSrc->pCkRegion, (RIFF::Chunk*) (pDst ? pDst->pCkRegion : 0)); + + pRegions->remove(pSrc); + RegionList::iterator iter = find(pRegions->begin(), pRegions->end(), pDst); + pRegions->insert(iter, pSrc); + } + + void Instrument::DeleteRegion(Region* pRegion) { + if (!pRegions) return; + RegionList::iterator iter = find(pRegions->begin(), pRegions->end(), pRegion); + if (iter == pRegions->end()) return; + pRegions->erase(iter); + Regions = pRegions->size(); + delete pRegion; + } + + /** + * Apply Instrument with all its Regions to the respective RIFF chunks. + * You have to call File::Save() to make changes persistent. + * + * @param pProgress - callback function for progress notification + * @throws Exception - on errors + */ + void Instrument::UpdateChunks(progress_t* pProgress) { + // first update base classes' chunks + Resource::UpdateChunks(pProgress); + Articulator::UpdateChunks(pProgress); + // make sure 'insh' chunk exists + RIFF::Chunk* insh = pCkInstrument->GetSubChunk(CHUNK_ID_INSH); + if (!insh) insh = pCkInstrument->AddSubChunk(CHUNK_ID_INSH, 12); + uint8_t* pData = (uint8_t*) insh->LoadChunkData(); + // update 'insh' chunk + Regions = (pRegions) ? pRegions->size() : 0; + midi_locale_t locale; + locale.instrument = MIDIProgram; + locale.bank = MIDI_BANK_ENCODE(MIDIBankCoarse, MIDIBankFine); + locale.bank = (IsDrum) ? locale.bank | DRUM_TYPE_MASK : locale.bank & (~DRUM_TYPE_MASK); + MIDIBank = MIDI_BANK_MERGE(MIDIBankCoarse, MIDIBankFine); // just a sync, when we're at it + store32(&pData[0], Regions); + store32(&pData[4], locale.bank); + store32(&pData[8], locale.instrument); + // update Region's chunks + if (!pRegions) return; + RegionList::iterator iter = pRegions->begin(); + RegionList::iterator end = pRegions->end(); + for (int i = 0; iter != end; ++iter, ++i) { + // divide local progress into subprogress + progress_t subprogress; + __divide_progress(pProgress, &subprogress, pRegions->size(), i); + // do the actual work + (*iter)->UpdateChunks(&subprogress); + } + __notify_progress(pProgress, 1.0); // notify done + } + + /** @brief Destructor. + * + * Removes RIFF chunks associated with this Instrument and frees all + * memory occupied by this instrument. + */ Instrument::~Instrument() { if (pRegions) { RegionList::iterator iter = pRegions->begin(); @@ -386,13 +1353,87 @@ } delete pRegions; } + // remove instrument's chunks + RIFF::List* pParent = pCkInstrument->GetParent(); + pParent->DeleteSubChunk(pCkInstrument); + } + + void Instrument::CopyAssignCore(const Instrument* orig) { + // handle base classes + Resource::CopyAssign(orig); + Articulator::CopyAssign(orig); + // handle actual own attributes of this class + // (the trivial ones) + IsDrum = orig->IsDrum; + MIDIBank = orig->MIDIBank; + MIDIBankCoarse = orig->MIDIBankCoarse; + MIDIBankFine = orig->MIDIBankFine; + MIDIProgram = orig->MIDIProgram; + } + + /** + * Make a (semi) deep copy of the Instrument object given by @a orig and assign + * it to this object. + * + * Note that all sample pointers referenced by @a orig are simply copied as + * memory address. Thus the respective samples are shared, not duplicated! + * + * @param orig - original Instrument object to be copied from + */ + void Instrument::CopyAssign(const Instrument* orig) { + CopyAssignCore(orig); + // delete all regions first + while (Regions) DeleteRegion(GetFirstRegion()); + // now recreate and copy regions + { + RegionList::const_iterator it = orig->pRegions->begin(); + for (int i = 0; i < orig->Regions; ++i, ++it) { + Region* dstRgn = AddRegion(); + //NOTE: Region does semi-deep copy ! + dstRgn->CopyAssign(*it); + } + } } - // *************** File *************** // * + /** @brief Constructor. + * + * Default constructor, use this to create an empty DLS file. You have + * to add samples, instruments and finally call Save() to actually write + * a DLS file. + */ + File::File() : Resource(NULL, pRIFF = new RIFF::File(RIFF_TYPE_DLS)) { + pRIFF->SetByteOrder(RIFF::endian_little); + pVersion = new version_t; + pVersion->major = 0; + pVersion->minor = 0; + pVersion->release = 0; + pVersion->build = 0; + + Instruments = 0; + WavePoolCount = 0; + pWavePoolTable = NULL; + pWavePoolTableHi = NULL; + WavePoolHeaderSize = 8; + + pSamples = NULL; + pInstruments = NULL; + + b64BitWavePoolOffsets = false; + } + + /** @brief Constructor. + * + * Load an existing DLS file. + * + * @param pRIFF - pointer to a RIFF file which is actually the DLS file + * to load + * @throws Exception if given file is not a DLS file, expected chunks + * are missing + */ File::File(RIFF::File* pRIFF) : Resource(NULL, pRIFF) { if (!pRIFF) throw DLS::Exception("NULL pointer reference to RIFF::File object."); this->pRIFF = pRIFF; @@ -409,27 +1450,37 @@ Instruments = colh->ReadUint32(); RIFF::Chunk* ptbl = pRIFF->GetSubChunk(CHUNK_ID_PTBL); - if (!ptbl) throw DLS::Exception("Mandatory chunk not found."); - uint32_t headersize = ptbl->ReadUint32(); - WavePoolCount = ptbl->ReadUint32(); - pWavePoolTable = new uint32_t[WavePoolCount]; - ptbl->SetPos(headersize); - - // Check for 64 bit offsets (used in gig v3 files) - if (ptbl->GetSize() - headersize == WavePoolCount * 8) { - for (int i = 0 ; i < WavePoolCount ; i++) { - // Just ignore the upper bits for now - uint32_t upper = ptbl->ReadUint32(); - pWavePoolTable[i] = ptbl->ReadUint32(); - if (upper || (pWavePoolTable[i] & 0x80000000)) - throw DLS::Exception("Files larger than 2 GB not yet supported"); + if (!ptbl) { // pool table is missing - this is probably an ".art" file + WavePoolCount = 0; + pWavePoolTable = NULL; + pWavePoolTableHi = NULL; + WavePoolHeaderSize = 8; + b64BitWavePoolOffsets = false; + } else { + WavePoolHeaderSize = ptbl->ReadUint32(); + WavePoolCount = ptbl->ReadUint32(); + pWavePoolTable = new uint32_t[WavePoolCount]; + pWavePoolTableHi = new uint32_t[WavePoolCount]; + ptbl->SetPos(WavePoolHeaderSize); + + // Check for 64 bit offsets (used in gig v3 files) + b64BitWavePoolOffsets = (ptbl->GetSize() - WavePoolHeaderSize == WavePoolCount * 8); + if (b64BitWavePoolOffsets) { + for (int i = 0 ; i < WavePoolCount ; i++) { + pWavePoolTableHi[i] = ptbl->ReadUint32(); + pWavePoolTable[i] = ptbl->ReadUint32(); + //NOTE: disabled this 2GB check, not sure why this check was still left here (Christian, 2016-05-12) + //if (pWavePoolTable[i] & 0x80000000) + // throw DLS::Exception("Files larger than 2 GB not yet supported"); + } + } else { // conventional 32 bit offsets + ptbl->Read(pWavePoolTable, WavePoolCount, sizeof(uint32_t)); + for (int i = 0 ; i < WavePoolCount ; i++) pWavePoolTableHi[i] = 0; } } - else ptbl->Read(pWavePoolTable, WavePoolCount, sizeof(uint32_t)); pSamples = NULL; pInstruments = NULL; - Instruments = 0; } File::~File() { @@ -454,7 +1505,10 @@ } if (pWavePoolTable) delete[] pWavePoolTable; + if (pWavePoolTableHi) delete[] pWavePoolTableHi; if (pVersion) delete pVersion; + for (std::list::iterator i = ExtensionFiles.begin() ; i != ExtensionFiles.end() ; i++) + delete *i; } Sample* File::GetFirstSample() { @@ -471,14 +1525,14 @@ } void File::LoadSamples() { + if (!pSamples) pSamples = new SampleList; RIFF::List* wvpl = pRIFF->GetSubList(LIST_TYPE_WVPL); if (wvpl) { - unsigned long wvplFileOffset = wvpl->GetFilePos(); + file_offset_t wvplFileOffset = wvpl->GetFilePos(); RIFF::List* wave = wvpl->GetFirstSubList(); while (wave) { if (wave->GetListType() == LIST_TYPE_WAVE) { - if (!pSamples) pSamples = new SampleList; - unsigned long waveFileOffset = wave->GetFilePos(); + file_offset_t waveFileOffset = wave->GetFilePos(); pSamples->push_back(new Sample(this, wave, waveFileOffset - wvplFileOffset)); } wave = wvpl->GetNextSubList(); @@ -487,12 +1541,11 @@ else { // Seen a dwpl list chunk instead of a wvpl list chunk in some file (officially not DLS compliant) RIFF::List* dwpl = pRIFF->GetSubList(LIST_TYPE_DWPL); if (dwpl) { - unsigned long dwplFileOffset = dwpl->GetFilePos(); + file_offset_t dwplFileOffset = dwpl->GetFilePos(); RIFF::List* wave = dwpl->GetFirstSubList(); while (wave) { if (wave->GetListType() == LIST_TYPE_WAVE) { - if (!pSamples) pSamples = new SampleList; - unsigned long waveFileOffset = wave->GetFilePos(); + file_offset_t waveFileOffset = wave->GetFilePos(); pSamples->push_back(new Sample(this, wave, waveFileOffset - dwplFileOffset)); } wave = dwpl->GetNextSubList(); @@ -501,6 +1554,39 @@ } } + /** @brief Add a new sample. + * + * This will create a new Sample object for the DLS file. You have to + * call Save() to make this persistent to the file. + * + * @returns pointer to new Sample object + */ + Sample* File::AddSample() { + if (!pSamples) LoadSamples(); + __ensureMandatoryChunksExist(); + RIFF::List* wvpl = pRIFF->GetSubList(LIST_TYPE_WVPL); + // create new Sample object and its respective 'wave' list chunk + RIFF::List* wave = wvpl->AddSubList(LIST_TYPE_WAVE); + Sample* pSample = new Sample(this, wave, 0 /*arbitrary value, we update offsets when we save*/); + pSamples->push_back(pSample); + return pSample; + } + + /** @brief Delete a sample. + * + * This will delete the given Sample object from the DLS file. You have + * to call Save() to make this persistent to the file. + * + * @param pSample - sample to delete + */ + void File::DeleteSample(Sample* pSample) { + if (!pSamples) return; + SampleList::iterator iter = find(pSamples->begin(), pSamples->end(), pSample); + if (iter == pSamples->end()) return; + pSamples->erase(iter); + delete pSample; + } + Instrument* File::GetFirstInstrument() { if (!pInstruments) LoadInstruments(); if (!pInstruments) return NULL; @@ -515,12 +1601,12 @@ } void File::LoadInstruments() { + if (!pInstruments) pInstruments = new InstrumentList; RIFF::List* lstInstruments = pRIFF->GetSubList(LIST_TYPE_LINS); if (lstInstruments) { RIFF::List* lstInstr = lstInstruments->GetFirstSubList(); while (lstInstr) { if (lstInstr->GetListType() == LIST_TYPE_INS) { - if (!pInstruments) pInstruments = new InstrumentList; pInstruments->push_back(new Instrument(this, lstInstr)); } lstInstr = lstInstruments->GetNextSubList(); @@ -528,6 +1614,355 @@ } } + /** @brief Add a new instrument definition. + * + * This will create a new Instrument object for the DLS file. You have + * to call Save() to make this persistent to the file. + * + * @returns pointer to new Instrument object + */ + Instrument* File::AddInstrument() { + if (!pInstruments) LoadInstruments(); + __ensureMandatoryChunksExist(); + RIFF::List* lstInstruments = pRIFF->GetSubList(LIST_TYPE_LINS); + RIFF::List* lstInstr = lstInstruments->AddSubList(LIST_TYPE_INS); + Instrument* pInstrument = new Instrument(this, lstInstr); + pInstruments->push_back(pInstrument); + return pInstrument; + } + + /** @brief Delete an instrument. + * + * This will delete the given Instrument object from the DLS file. You + * have to call Save() to make this persistent to the file. + * + * @param pInstrument - instrument to delete + */ + void File::DeleteInstrument(Instrument* pInstrument) { + if (!pInstruments) return; + InstrumentList::iterator iter = find(pInstruments->begin(), pInstruments->end(), pInstrument); + if (iter == pInstruments->end()) return; + pInstruments->erase(iter); + delete pInstrument; + } + + /** + * Returns extension file of given index. Extension files are used + * sometimes to circumvent the 2 GB file size limit of the RIFF format and + * of certain operating systems in general. In this case, instead of just + * using one file, the content is spread among several files with similar + * file name scheme. This is especially used by some GigaStudio sound + * libraries. + * + * @param index - index of extension file + * @returns sought extension file, NULL if index out of bounds + * @see GetFileName() + */ + RIFF::File* File::GetExtensionFile(int index) { + if (index < 0 || index >= ExtensionFiles.size()) return NULL; + std::list::iterator iter = ExtensionFiles.begin(); + for (int i = 0; iter != ExtensionFiles.end(); ++iter, ++i) + if (i == index) return *iter; + return NULL; + } + + /** @brief File name of this DLS file. + * + * This method returns the file name as it was provided when loading + * the respective DLS file. However in case the File object associates + * an empty, that is new DLS file, which was not yet saved to disk, + * this method will return an empty string. + * + * @see GetExtensionFile() + */ + String File::GetFileName() { + return pRIFF->GetFileName(); + } + + /** + * You may call this method store a future file name, so you don't have to + * to pass it to the Save() call later on. + */ + void File::SetFileName(const String& name) { + pRIFF->SetFileName(name); + } + + /** + * Apply all the DLS file's current instruments, samples and settings to + * the respective RIFF chunks. You have to call Save() to make changes + * persistent. + * + * @param pProgress - callback function for progress notification + * @throws Exception - on errors + */ + void File::UpdateChunks(progress_t* pProgress) { + // first update base class's chunks + Resource::UpdateChunks(pProgress); + + // if version struct exists, update 'vers' chunk + if (pVersion) { + RIFF::Chunk* ckVersion = pRIFF->GetSubChunk(CHUNK_ID_VERS); + if (!ckVersion) ckVersion = pRIFF->AddSubChunk(CHUNK_ID_VERS, 8); + uint8_t* pData = (uint8_t*) ckVersion->LoadChunkData(); + store16(&pData[0], pVersion->minor); + store16(&pData[2], pVersion->major); + store16(&pData[4], pVersion->build); + store16(&pData[6], pVersion->release); + } + + // update 'colh' chunk + Instruments = (pInstruments) ? pInstruments->size() : 0; + RIFF::Chunk* colh = pRIFF->GetSubChunk(CHUNK_ID_COLH); + if (!colh) colh = pRIFF->AddSubChunk(CHUNK_ID_COLH, 4); + uint8_t* pData = (uint8_t*) colh->LoadChunkData(); + store32(pData, Instruments); + + // update instrument's chunks + if (pInstruments) { + // divide local progress into subprogress + progress_t subprogress; + __divide_progress(pProgress, &subprogress, 20.f, 0.f); // arbitrarily subdivided into 5% of total progress + + // do the actual work + InstrumentList::iterator iter = pInstruments->begin(); + InstrumentList::iterator end = pInstruments->end(); + for (int i = 0; iter != end; ++iter, ++i) { + // divide subprogress into sub-subprogress + progress_t subsubprogress; + __divide_progress(&subprogress, &subsubprogress, pInstruments->size(), i); + // do the actual work + (*iter)->UpdateChunks(&subsubprogress); + } + + __notify_progress(&subprogress, 1.0); // notify subprogress done + } + + // update 'ptbl' chunk + const int iSamples = (pSamples) ? pSamples->size() : 0; + int iPtblOffsetSize = (b64BitWavePoolOffsets) ? 8 : 4; + RIFF::Chunk* ptbl = pRIFF->GetSubChunk(CHUNK_ID_PTBL); + if (!ptbl) ptbl = pRIFF->AddSubChunk(CHUNK_ID_PTBL, 1 /*anything, we'll resize*/); + int iPtblSize = WavePoolHeaderSize + iPtblOffsetSize * iSamples; + ptbl->Resize(iPtblSize); + pData = (uint8_t*) ptbl->LoadChunkData(); + WavePoolCount = iSamples; + store32(&pData[4], WavePoolCount); + // we actually update the sample offsets in the pool table when we Save() + memset(&pData[WavePoolHeaderSize], 0, iPtblSize - WavePoolHeaderSize); + + // update sample's chunks + if (pSamples) { + // divide local progress into subprogress + progress_t subprogress; + __divide_progress(pProgress, &subprogress, 20.f, 1.f); // arbitrarily subdivided into 95% of total progress + + // do the actual work + SampleList::iterator iter = pSamples->begin(); + SampleList::iterator end = pSamples->end(); + for (int i = 0; iter != end; ++iter, ++i) { + // divide subprogress into sub-subprogress + progress_t subsubprogress; + __divide_progress(&subprogress, &subsubprogress, pSamples->size(), i); + // do the actual work + (*iter)->UpdateChunks(&subsubprogress); + } + + __notify_progress(&subprogress, 1.0); // notify subprogress done + } + + // the RIFF file to be written might now been grown >= 4GB or might + // been shrunk < 4GB, so we might need to update the wave pool offset + // size and thus accordingly we would need to resize the wave pool + // chunk + const file_offset_t finalFileSize = pRIFF->GetRequiredFileSize(); + const bool bRequires64Bit = (finalFileSize >> 32) != 0; + if (b64BitWavePoolOffsets != bRequires64Bit) { + b64BitWavePoolOffsets = bRequires64Bit; + iPtblOffsetSize = (b64BitWavePoolOffsets) ? 8 : 4; + iPtblSize = WavePoolHeaderSize + iPtblOffsetSize * iSamples; + ptbl->Resize(iPtblSize); + } + + __notify_progress(pProgress, 1.0); // notify done + } + + /** @brief Save changes to another file. + * + * Make all changes persistent by writing them to another file. + * Caution: this method is optimized for writing to + * another file, do not use it to save the changes to the same + * file! Use Save() (without path argument) in that case instead! + * Ignoring this might result in a corrupted file! + * + * After calling this method, this File object will be associated with + * the new file (given by \a Path) afterwards. + * + * @param Path - path and file name where everything should be written to + * @param pProgress - optional: callback function for progress notification + */ + void File::Save(const String& Path, progress_t* pProgress) { + { + // divide local progress into subprogress + progress_t subprogress; + __divide_progress(pProgress, &subprogress, 2.f, 0.f); // arbitrarily subdivided into 50% of total progress + // do the actual work + UpdateChunks(&subprogress); + + } + { + // divide local progress into subprogress + progress_t subprogress; + __divide_progress(pProgress, &subprogress, 2.f, 1.f); // arbitrarily subdivided into 50% of total progress + // do the actual work + pRIFF->Save(Path, &subprogress); + } + UpdateFileOffsets(); + __notify_progress(pProgress, 1.0); // notify done + } + + /** @brief Save changes to same file. + * + * Make all changes persistent by writing them to the actual (same) + * file. The file might temporarily grow to a higher size than it will + * have at the end of the saving process. + * + * @param pProgress - optional: callback function for progress notification + * @throws RIFF::Exception if any kind of IO error occurred + * @throws DLS::Exception if any kind of DLS specific error occurred + */ + void File::Save(progress_t* pProgress) { + { + // divide local progress into subprogress + progress_t subprogress; + __divide_progress(pProgress, &subprogress, 2.f, 0.f); // arbitrarily subdivided into 50% of total progress + // do the actual work + UpdateChunks(&subprogress); + } + { + // divide local progress into subprogress + progress_t subprogress; + __divide_progress(pProgress, &subprogress, 2.f, 1.f); // arbitrarily subdivided into 50% of total progress + // do the actual work + pRIFF->Save(&subprogress); + } + UpdateFileOffsets(); + __notify_progress(pProgress, 1.0); // notify done + } + + /** @brief Updates all file offsets stored all over the file. + * + * This virtual method is called whenever the overall file layout has been + * changed (i.e. file or individual RIFF chunks have been resized). It is + * then the responsibility of this method to update all file offsets stored + * in the file format. For example samples are referenced by instruments by + * file offsets. The gig format also stores references to instrument + * scripts as file offsets, and thus it overrides this method to update + * those file offsets as well. + */ + void File::UpdateFileOffsets() { + __UpdateWavePoolTableChunk(); + } + + /** + * Checks if all (for DLS) mandatory chunks exist, if not they will be + * created. Note that those chunks will not be made persistent until + * Save() was called. + */ + void File::__ensureMandatoryChunksExist() { + // enusre 'lins' list chunk exists (mandatory for instrument definitions) + RIFF::List* lstInstruments = pRIFF->GetSubList(LIST_TYPE_LINS); + if (!lstInstruments) pRIFF->AddSubList(LIST_TYPE_LINS); + // ensure 'ptbl' chunk exists (mandatory for samples) + RIFF::Chunk* ptbl = pRIFF->GetSubChunk(CHUNK_ID_PTBL); + if (!ptbl) { + const int iOffsetSize = (b64BitWavePoolOffsets) ? 8 : 4; + ptbl = pRIFF->AddSubChunk(CHUNK_ID_PTBL, WavePoolHeaderSize + iOffsetSize); + } + // enusre 'wvpl' list chunk exists (mandatory for samples) + RIFF::List* wvpl = pRIFF->GetSubList(LIST_TYPE_WVPL); + if (!wvpl) pRIFF->AddSubList(LIST_TYPE_WVPL); + } + + /** + * Updates (persistently) the wave pool table with offsets to all + * currently available samples. Caution: this method assumes the + * 'ptbl' chunk to be already of the correct size and the file to be + * writable, so usually this method is only called after a Save() call. + * + * @throws Exception - if 'ptbl' chunk is too small (should only occur + * if there's a bug) + */ + void File::__UpdateWavePoolTableChunk() { + __UpdateWavePoolTable(); + RIFF::Chunk* ptbl = pRIFF->GetSubChunk(CHUNK_ID_PTBL); + const int iOffsetSize = (b64BitWavePoolOffsets) ? 8 : 4; + // check if 'ptbl' chunk is large enough + WavePoolCount = (pSamples) ? pSamples->size() : 0; + const file_offset_t ulRequiredSize = WavePoolHeaderSize + iOffsetSize * WavePoolCount; + if (ptbl->GetSize() < ulRequiredSize) throw Exception("Fatal error, 'ptbl' chunk too small"); + // save the 'ptbl' chunk's current read/write position + file_offset_t ullOriginalPos = ptbl->GetPos(); + // update headers + ptbl->SetPos(0); + uint32_t tmp = WavePoolHeaderSize; + ptbl->WriteUint32(&tmp); + tmp = WavePoolCount; + ptbl->WriteUint32(&tmp); + // update offsets + ptbl->SetPos(WavePoolHeaderSize); + if (b64BitWavePoolOffsets) { + for (int i = 0 ; i < WavePoolCount ; i++) { + tmp = pWavePoolTableHi[i]; + ptbl->WriteUint32(&tmp); + tmp = pWavePoolTable[i]; + ptbl->WriteUint32(&tmp); + } + } else { // conventional 32 bit offsets + for (int i = 0 ; i < WavePoolCount ; i++) { + tmp = pWavePoolTable[i]; + ptbl->WriteUint32(&tmp); + } + } + // restore 'ptbl' chunk's original read/write position + ptbl->SetPos(ullOriginalPos); + } + + /** + * Updates the wave pool table with offsets to all currently available + * samples. Caution: this method assumes the 'wvpl' list chunk + * exists already. + */ + void File::__UpdateWavePoolTable() { + WavePoolCount = (pSamples) ? pSamples->size() : 0; + // resize wave pool table arrays + if (pWavePoolTable) delete[] pWavePoolTable; + if (pWavePoolTableHi) delete[] pWavePoolTableHi; + pWavePoolTable = new uint32_t[WavePoolCount]; + pWavePoolTableHi = new uint32_t[WavePoolCount]; + if (!pSamples) return; + // update offsets int wave pool table + RIFF::List* wvpl = pRIFF->GetSubList(LIST_TYPE_WVPL); + uint64_t wvplFileOffset = wvpl->GetFilePos(); + if (b64BitWavePoolOffsets) { + SampleList::iterator iter = pSamples->begin(); + SampleList::iterator end = pSamples->end(); + for (int i = 0 ; iter != end ; ++iter, i++) { + uint64_t _64BitOffset = (*iter)->pWaveList->GetFilePos() - wvplFileOffset - LIST_HEADER_SIZE(pRIFF->GetFileOffsetSize()); + (*iter)->ullWavePoolOffset = _64BitOffset; + pWavePoolTableHi[i] = (uint32_t) (_64BitOffset >> 32); + pWavePoolTable[i] = (uint32_t) _64BitOffset; + } + } else { // conventional 32 bit offsets + SampleList::iterator iter = pSamples->begin(); + SampleList::iterator end = pSamples->end(); + for (int i = 0 ; iter != end ; ++iter, i++) { + uint64_t _64BitOffset = (*iter)->pWaveList->GetFilePos() - wvplFileOffset - LIST_HEADER_SIZE(pRIFF->GetFileOffsetSize()); + (*iter)->ullWavePoolOffset = _64BitOffset; + pWavePoolTable[i] = (uint32_t) _64BitOffset; + } + } + } + // *************** Exception *************** @@ -540,4 +1975,25 @@ std::cout << "DLS::Exception: " << Message << std::endl; } + +// *************** functions *************** +// * + + /** + * Returns the name of this C++ library. This is usually "libgig" of + * course. This call is equivalent to RIFF::libraryName() and + * gig::libraryName(). + */ + String libraryName() { + return PACKAGE; + } + + /** + * Returns version of this C++ library. This call is equivalent to + * RIFF::libraryVersion() and gig::libraryVersion(). + */ + String libraryVersion() { + return VERSION; + } + } // namespace DLS