712 lines
19 KiB
C++
712 lines
19 KiB
C++
/*
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* Load_dbm.cpp
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* ------------
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* Purpose: DigiBooster Pro module Loader (DBM)
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* Notes : (currently none)
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* Authors: OpenMPT Devs
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* The OpenMPT source code is released under the BSD license. Read LICENSE for more details.
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*/
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#include "stdafx.h"
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#include "Loaders.h"
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#include "../common/mptStringBuffer.h"
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#ifndef NO_PLUGINS
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#include "plugins/DigiBoosterEcho.h"
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#endif // NO_PLUGINS
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#ifdef LIBOPENMPT_BUILD
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#define MPT_DBM_USE_REAL_SUBSONGS
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#endif
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OPENMPT_NAMESPACE_BEGIN
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struct DBMFileHeader
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{
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char dbm0[4];
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uint8 trkVerHi;
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uint8 trkVerLo;
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char reserved[2];
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};
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MPT_BINARY_STRUCT(DBMFileHeader, 8)
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// IFF-style Chunk
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struct DBMChunk
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{
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// 32-Bit chunk identifiers
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enum ChunkIdentifiers
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{
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idNAME = MagicBE("NAME"),
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idINFO = MagicBE("INFO"),
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idSONG = MagicBE("SONG"),
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idINST = MagicBE("INST"),
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idVENV = MagicBE("VENV"),
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idPENV = MagicBE("PENV"),
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idPATT = MagicBE("PATT"),
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idPNAM = MagicBE("PNAM"),
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idSMPL = MagicBE("SMPL"),
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idDSPE = MagicBE("DSPE"),
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idMPEG = MagicBE("MPEG"),
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};
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uint32be id;
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uint32be length;
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size_t GetLength() const
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{
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return length;
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}
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ChunkIdentifiers GetID() const
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{
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return static_cast<ChunkIdentifiers>(id.get());
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}
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};
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MPT_BINARY_STRUCT(DBMChunk, 8)
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struct DBMInfoChunk
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{
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uint16be instruments;
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uint16be samples;
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uint16be songs;
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uint16be patterns;
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uint16be channels;
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};
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MPT_BINARY_STRUCT(DBMInfoChunk, 10)
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// Instrument header
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struct DBMInstrument
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{
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enum DBMInstrFlags
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{
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smpLoop = 0x01,
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smpPingPongLoop = 0x02,
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};
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char name[30];
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uint16be sample; // Sample reference
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uint16be volume; // 0...64
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uint32be sampleRate;
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uint32be loopStart;
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uint32be loopLength;
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int16be panning; // -128...128
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uint16be flags; // See DBMInstrFlags
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};
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MPT_BINARY_STRUCT(DBMInstrument, 50)
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// Volume or panning envelope
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struct DBMEnvelope
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{
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enum DBMEnvelopeFlags
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{
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envEnabled = 0x01,
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envSustain = 0x02,
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envLoop = 0x04,
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};
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uint16be instrument;
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uint8be flags; // See DBMEnvelopeFlags
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uint8be numSegments; // Number of envelope points - 1
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uint8be sustain1;
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uint8be loopBegin;
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uint8be loopEnd;
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uint8be sustain2; // Second sustain point
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uint16be data[2 * 32];
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};
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MPT_BINARY_STRUCT(DBMEnvelope, 136)
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// Note: Unlike in MOD, 1Fx, 2Fx, 5Fx / 5xF, 6Fx / 6xF and AFx / AxF are fine slides.
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static constexpr ModCommand::COMMAND dbmEffects[] =
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{
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CMD_ARPEGGIO, CMD_PORTAMENTOUP, CMD_PORTAMENTODOWN, CMD_TONEPORTAMENTO,
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CMD_VIBRATO, CMD_TONEPORTAVOL, CMD_VIBRATOVOL, CMD_TREMOLO,
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CMD_PANNING8, CMD_OFFSET, CMD_VOLUMESLIDE, CMD_POSITIONJUMP,
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CMD_VOLUME, CMD_PATTERNBREAK, CMD_MODCMDEX, CMD_TEMPO,
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CMD_GLOBALVOLUME, CMD_GLOBALVOLSLIDE, CMD_NONE, CMD_NONE,
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CMD_KEYOFF, CMD_SETENVPOSITION, CMD_NONE, CMD_NONE,
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CMD_NONE, CMD_PANNINGSLIDE, CMD_NONE, CMD_NONE,
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CMD_NONE, CMD_NONE, CMD_NONE,
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#ifndef NO_PLUGINS
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CMD_DBMECHO, // Toggle DSP
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CMD_MIDI, // Wxx Echo Delay
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CMD_MIDI, // Xxx Echo Feedback
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CMD_MIDI, // Yxx Echo Mix
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CMD_MIDI, // Zxx Echo Cross
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#endif // NO_PLUGINS
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};
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static void ConvertDBMEffect(uint8 &command, uint8 ¶m)
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{
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uint8 oldCmd = command;
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if(command < std::size(dbmEffects))
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command = dbmEffects[command];
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else
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command = CMD_NONE;
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switch(command)
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{
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case CMD_ARPEGGIO:
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if(param == 0)
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command = CMD_NONE;
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break;
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case CMD_PATTERNBREAK:
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param = ((param >> 4) * 10) + (param & 0x0F);
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break;
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#ifdef MODPLUG_TRACKER
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case CMD_VIBRATO:
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if(param & 0x0F)
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{
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// DBM vibrato is half as deep as most other trackers. Convert it to IT fine vibrato range if possible.
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uint8 depth = (param & 0x0F) * 2u;
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param &= 0xF0;
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if(depth < 16)
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command = CMD_FINEVIBRATO;
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else
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depth = (depth + 2u) / 4u;
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param |= depth;
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}
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break;
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#endif
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// Volume slide nibble priority - first nibble (slide up) has precedence.
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case CMD_VOLUMESLIDE:
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case CMD_TONEPORTAVOL:
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case CMD_VIBRATOVOL:
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if((param & 0xF0) != 0x00 && (param & 0xF0) != 0xF0 && (param & 0x0F) != 0x0F)
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param &= 0xF0;
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break;
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case CMD_GLOBALVOLUME:
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if(param <= 64)
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param *= 2;
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else
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param = 128;
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break;
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case CMD_MODCMDEX:
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switch(param & 0xF0)
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{
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case 0x30: // Play backwards
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command = CMD_S3MCMDEX;
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param = 0x9F;
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break;
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case 0x40: // Turn off sound in channel (volume / portamento commands after this can't pick up the note anymore)
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command = CMD_S3MCMDEX;
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param = 0xC0;
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break;
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case 0x50: // Turn on/off channel
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// TODO: Apparently this should also kill the playing note.
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if((param & 0x0F) <= 0x01)
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{
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command = CMD_CHANNELVOLUME;
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param = (param == 0x50) ? 0x00 : 0x40;
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}
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break;
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case 0x70: // Coarse offset
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command = CMD_S3MCMDEX;
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param = 0xA0 | (param & 0x0F);
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break;
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default:
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// Rest will be converted later from CMD_MODCMDEX to CMD_S3MCMDEX.
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break;
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}
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break;
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case CMD_TEMPO:
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if(param <= 0x1F) command = CMD_SPEED;
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break;
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case CMD_KEYOFF:
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if (param == 0)
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{
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// TODO key off at tick 0
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}
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break;
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case CMD_MIDI:
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// Encode echo parameters into fixed MIDI macros
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param = 128 + (oldCmd - 32) * 32 + param / 8;
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}
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}
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// Read a chunk of volume or panning envelopes
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static void ReadDBMEnvelopeChunk(FileReader chunk, EnvelopeType envType, CSoundFile &sndFile, bool scaleEnv)
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{
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uint16 numEnvs = chunk.ReadUint16BE();
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for(uint16 env = 0; env < numEnvs; env++)
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{
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DBMEnvelope dbmEnv;
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chunk.ReadStruct(dbmEnv);
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uint16 dbmIns = dbmEnv.instrument;
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if(dbmIns > 0 && dbmIns <= sndFile.GetNumInstruments() && (sndFile.Instruments[dbmIns] != nullptr))
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{
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ModInstrument *mptIns = sndFile.Instruments[dbmIns];
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InstrumentEnvelope &mptEnv = mptIns->GetEnvelope(envType);
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if(dbmEnv.numSegments)
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{
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if(dbmEnv.flags & DBMEnvelope::envEnabled) mptEnv.dwFlags.set(ENV_ENABLED);
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if(dbmEnv.flags & DBMEnvelope::envSustain) mptEnv.dwFlags.set(ENV_SUSTAIN);
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if(dbmEnv.flags & DBMEnvelope::envLoop) mptEnv.dwFlags.set(ENV_LOOP);
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}
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uint8 numPoints = std::min(dbmEnv.numSegments.get(), uint8(31)) + 1;
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mptEnv.resize(numPoints);
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mptEnv.nLoopStart = dbmEnv.loopBegin;
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mptEnv.nLoopEnd = dbmEnv.loopEnd;
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mptEnv.nSustainStart = mptEnv.nSustainEnd = dbmEnv.sustain1;
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for(uint8 i = 0; i < numPoints; i++)
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{
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mptEnv[i].tick = dbmEnv.data[i * 2];
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uint16 val = dbmEnv.data[i * 2 + 1];
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if(scaleEnv)
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{
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// Panning envelopes are -128...128 in DigiBooster Pro 3.x
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val = (val + 128) / 4;
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}
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LimitMax(val, uint16(64));
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mptEnv[i].value = static_cast<uint8>(val);
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}
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}
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}
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}
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static bool ValidateHeader(const DBMFileHeader &fileHeader)
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{
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if(std::memcmp(fileHeader.dbm0, "DBM0", 4)
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|| fileHeader.trkVerHi > 3)
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{
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return false;
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}
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return true;
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}
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CSoundFile::ProbeResult CSoundFile::ProbeFileHeaderDBM(MemoryFileReader file, const uint64 *pfilesize)
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{
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DBMFileHeader fileHeader;
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if(!file.ReadStruct(fileHeader))
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{
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return ProbeWantMoreData;
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}
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if(!ValidateHeader(fileHeader))
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{
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return ProbeFailure;
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}
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MPT_UNREFERENCED_PARAMETER(pfilesize);
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return ProbeSuccess;
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}
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bool CSoundFile::ReadDBM(FileReader &file, ModLoadingFlags loadFlags)
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{
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file.Rewind();
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DBMFileHeader fileHeader;
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if(!file.ReadStruct(fileHeader))
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{
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return false;
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}
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if(!ValidateHeader(fileHeader))
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{
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return false;
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}
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if(loadFlags == onlyVerifyHeader)
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{
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return true;
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}
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ChunkReader chunkFile(file);
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auto chunks = chunkFile.ReadChunks<DBMChunk>(1);
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// Globals
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DBMInfoChunk infoData;
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if(!chunks.GetChunk(DBMChunk::idINFO).ReadStruct(infoData))
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{
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return false;
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}
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InitializeGlobals(MOD_TYPE_DBM);
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InitializeChannels();
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m_SongFlags = SONG_ITCOMPATGXX | SONG_ITOLDEFFECTS;
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m_nChannels = Clamp<uint16, uint16>(infoData.channels, 1, MAX_BASECHANNELS); // note: MAX_BASECHANNELS is currently 127, but DBPro 2 supports up to 128 channels, DBPro 3 apparently up to 254.
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m_nInstruments = std::min(static_cast<INSTRUMENTINDEX>(infoData.instruments), static_cast<INSTRUMENTINDEX>(MAX_INSTRUMENTS - 1));
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m_nSamples = std::min(static_cast<SAMPLEINDEX>(infoData.samples), static_cast<SAMPLEINDEX>(MAX_SAMPLES - 1));
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m_playBehaviour.set(kSlidesAtSpeed1);
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m_playBehaviour.reset(kITVibratoTremoloPanbrello);
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m_playBehaviour.reset(kITArpeggio);
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m_modFormat.formatName = U_("DigiBooster Pro");
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m_modFormat.type = U_("dbm");
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m_modFormat.madeWithTracker = MPT_UFORMAT("DigiBooster Pro {}.{}")(mpt::ufmt::hex(fileHeader.trkVerHi), mpt::ufmt::hex(fileHeader.trkVerLo));
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m_modFormat.charset = mpt::Charset::Amiga_no_C1;
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// Name chunk
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FileReader nameChunk = chunks.GetChunk(DBMChunk::idNAME);
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nameChunk.ReadString<mpt::String::maybeNullTerminated>(m_songName, nameChunk.GetLength());
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// Song chunk
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FileReader songChunk = chunks.GetChunk(DBMChunk::idSONG);
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Order().clear();
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uint16 numSongs = infoData.songs;
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for(uint16 i = 0; i < numSongs && songChunk.CanRead(46); i++)
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{
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char name[44];
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songChunk.ReadString<mpt::String::maybeNullTerminated>(name, 44);
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if(m_songName.empty())
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{
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m_songName = name;
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}
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uint16 numOrders = songChunk.ReadUint16BE();
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#ifdef MPT_DBM_USE_REAL_SUBSONGS
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if(!Order().empty())
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{
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// Add a new sequence for this song
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if(Order.AddSequence() == SEQUENCEINDEX_INVALID)
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break;
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}
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Order().SetName(mpt::ToUnicode(mpt::Charset::Amiga_no_C1, name));
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ReadOrderFromFile<uint16be>(Order(), songChunk, numOrders);
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#else
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const ORDERINDEX startIndex = Order().GetLength();
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if(startIndex < MAX_ORDERS && songChunk.CanRead(numOrders * 2u))
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{
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LimitMax(numOrders, static_cast<ORDERINDEX>(MAX_ORDERS - startIndex - 1));
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Order().resize(startIndex + numOrders + 1);
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for(uint16 ord = 0; ord < numOrders; ord++)
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{
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Order()[startIndex + ord] = static_cast<PATTERNINDEX>(songChunk.ReadUint16BE());
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}
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}
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#endif // MPT_DBM_USE_REAL_SUBSONGS
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}
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#ifdef MPT_DBM_USE_REAL_SUBSONGS
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Order.SetSequence(0);
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#endif // MPT_DBM_USE_REAL_SUBSONGS
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// Read instruments
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if(FileReader instChunk = chunks.GetChunk(DBMChunk::idINST))
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{
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for(INSTRUMENTINDEX i = 1; i <= GetNumInstruments(); i++)
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{
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DBMInstrument instrHeader;
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instChunk.ReadStruct(instrHeader);
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ModInstrument *mptIns = AllocateInstrument(i, instrHeader.sample);
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if(mptIns == nullptr || instrHeader.sample >= MAX_SAMPLES)
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{
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continue;
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}
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mptIns->name = mpt::String::ReadBuf(mpt::String::maybeNullTerminated, instrHeader.name);
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m_szNames[instrHeader.sample] = mpt::String::ReadBuf(mpt::String::maybeNullTerminated, instrHeader.name);
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mptIns->nFadeOut = 0;
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mptIns->nPan = static_cast<uint16>(instrHeader.panning + 128);
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LimitMax(mptIns->nPan, uint32(256));
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mptIns->dwFlags.set(INS_SETPANNING);
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// Sample Info
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ModSample &mptSmp = Samples[instrHeader.sample];
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mptSmp.Initialize();
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mptSmp.nVolume = std::min(static_cast<uint16>(instrHeader.volume), uint16(64)) * 4u;
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mptSmp.nC5Speed = Util::muldivr(instrHeader.sampleRate, 8303, 8363);
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if(instrHeader.loopLength && (instrHeader.flags & (DBMInstrument::smpLoop | DBMInstrument::smpPingPongLoop)))
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{
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mptSmp.nLoopStart = instrHeader.loopStart;
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mptSmp.nLoopEnd = mptSmp.nLoopStart + instrHeader.loopLength;
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mptSmp.uFlags.set(CHN_LOOP);
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if(instrHeader.flags & DBMInstrument::smpPingPongLoop)
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mptSmp.uFlags.set(CHN_PINGPONGLOOP);
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}
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}
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// Read envelopes
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ReadDBMEnvelopeChunk(chunks.GetChunk(DBMChunk::idVENV), ENV_VOLUME, *this, false);
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ReadDBMEnvelopeChunk(chunks.GetChunk(DBMChunk::idPENV), ENV_PANNING, *this, fileHeader.trkVerHi > 2);
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// Note-Off cuts samples if there's no envelope.
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for(INSTRUMENTINDEX i = 1; i <= GetNumInstruments(); i++)
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{
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if(Instruments[i] != nullptr && !Instruments[i]->VolEnv.dwFlags[ENV_ENABLED])
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{
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Instruments[i]->nFadeOut = 32767;
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}
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}
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}
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// Patterns
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FileReader patternChunk = chunks.GetChunk(DBMChunk::idPATT);
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#ifndef NO_PLUGINS
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bool hasEchoEnable = false, hasEchoParams = false;
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#endif // NO_PLUGINS
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if(patternChunk.IsValid() && (loadFlags & loadPatternData))
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{
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FileReader patternNameChunk = chunks.GetChunk(DBMChunk::idPNAM);
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patternNameChunk.Skip(1); // Encoding, should be UTF-8 or ASCII
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Patterns.ResizeArray(infoData.patterns);
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std::vector<std::pair<EffectCommand, ModCommand::PARAM>> lostGlobalCommands;
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for(PATTERNINDEX pat = 0; pat < infoData.patterns; pat++)
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{
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uint16 numRows = patternChunk.ReadUint16BE();
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uint32 packedSize = patternChunk.ReadUint32BE();
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FileReader chunk = patternChunk.ReadChunk(packedSize);
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if(!Patterns.Insert(pat, numRows))
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continue;
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std::string patName;
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patternNameChunk.ReadSizedString<uint8be, mpt::String::maybeNullTerminated>(patName);
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Patterns[pat].SetName(patName);
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PatternRow patRow = Patterns[pat].GetRow(0);
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ROWINDEX row = 0;
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lostGlobalCommands.clear();
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while(chunk.CanRead(1))
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{
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const uint8 ch = chunk.ReadUint8();
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if(!ch)
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{
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// End Of Row
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for(const auto &cmd : lostGlobalCommands)
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{
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Patterns[pat].WriteEffect(EffectWriter(cmd.first, cmd.second).Row(row));
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}
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lostGlobalCommands.clear();
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if(++row >= numRows)
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break;
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patRow = Patterns[pat].GetRow(row);
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continue;
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}
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ModCommand dummy = ModCommand::Empty();
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ModCommand &m = ch <= GetNumChannels() ? patRow[ch - 1] : dummy;
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const uint8 b = chunk.ReadUint8();
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if(b & 0x01)
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{
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uint8 note = chunk.ReadUint8();
|
|
|
|
if(note == 0x1F)
|
|
m.note = NOTE_KEYOFF;
|
|
else if(note > 0 && note < 0xFE)
|
|
m.note = ((note >> 4) * 12) + (note & 0x0F) + 13;
|
|
}
|
|
if(b & 0x02)
|
|
{
|
|
m.instr = chunk.ReadUint8();
|
|
}
|
|
if(b & 0x3C)
|
|
{
|
|
uint8 cmd1 = 0, cmd2 = 0, param1 = 0, param2 = 0;
|
|
if(b & 0x04) cmd2 = chunk.ReadUint8();
|
|
if(b & 0x08) param2 = chunk.ReadUint8();
|
|
if(b & 0x10) cmd1 = chunk.ReadUint8();
|
|
if(b & 0x20) param1 = chunk.ReadUint8();
|
|
ConvertDBMEffect(cmd1, param1);
|
|
ConvertDBMEffect(cmd2, param2);
|
|
|
|
if (cmd2 == CMD_VOLUME || (cmd2 == CMD_NONE && cmd1 != CMD_VOLUME))
|
|
{
|
|
std::swap(cmd1, cmd2);
|
|
std::swap(param1, param2);
|
|
}
|
|
|
|
const auto lostCommand = ModCommand::TwoRegularCommandsToMPT(cmd1, param1, cmd2, param2);
|
|
if(ModCommand::IsGlobalCommand(lostCommand.first, lostCommand.second))
|
|
lostGlobalCommands.insert(lostGlobalCommands.begin(), lostCommand); // Insert at front so that the last command of same type "wins"
|
|
|
|
m.volcmd = cmd1;
|
|
m.vol = param1;
|
|
m.command = cmd2;
|
|
m.param = param2;
|
|
#ifdef MODPLUG_TRACKER
|
|
m.ExtendedMODtoS3MEffect();
|
|
#endif // MODPLUG_TRACKER
|
|
#ifndef NO_PLUGINS
|
|
if(m.command == CMD_DBMECHO)
|
|
hasEchoEnable = true;
|
|
else if(m.command == CMD_MIDI)
|
|
hasEchoParams = true;
|
|
#endif // NO_PLUGINS
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
#ifndef NO_PLUGINS
|
|
// Echo DSP
|
|
if(loadFlags & loadPluginData)
|
|
{
|
|
if(hasEchoEnable)
|
|
{
|
|
// If there are any Vxx effects to dynamically enable / disable echo, use the CHN_NOFX flag.
|
|
for(CHANNELINDEX i = 0; i < m_nChannels; i++)
|
|
{
|
|
ChnSettings[i].nMixPlugin = 1;
|
|
ChnSettings[i].dwFlags.set(CHN_NOFX);
|
|
}
|
|
}
|
|
|
|
bool anyEnabled = hasEchoEnable;
|
|
// DBP 3 Documentation says that the defaults are 64/128/128/255, but they appear to be 80/150/80/255 in DBP 2.21
|
|
uint8 settings[8] = { 0, 80, 0, 150, 0, 80, 0, 255 };
|
|
|
|
if(FileReader dspChunk = chunks.GetChunk(DBMChunk::idDSPE))
|
|
{
|
|
uint16 maskLen = dspChunk.ReadUint16BE();
|
|
for(uint16 i = 0; i < maskLen; i++)
|
|
{
|
|
bool enabled = (dspChunk.ReadUint8() == 0);
|
|
if(i < m_nChannels)
|
|
{
|
|
if(hasEchoEnable)
|
|
{
|
|
// If there are any Vxx effects to dynamically enable / disable echo, use the CHN_NOFX flag.
|
|
ChnSettings[i].dwFlags.set(CHN_NOFX, !enabled);
|
|
} else if(enabled)
|
|
{
|
|
ChnSettings[i].nMixPlugin = 1;
|
|
anyEnabled = true;
|
|
}
|
|
}
|
|
}
|
|
dspChunk.ReadArray(settings);
|
|
}
|
|
|
|
if(anyEnabled)
|
|
{
|
|
// Note: DigiBooster Pro 3 has a more versatile per-channel echo effect.
|
|
// In this case, we'd have to create one plugin per channel.
|
|
SNDMIXPLUGIN &plugin = m_MixPlugins[0];
|
|
plugin.Destroy();
|
|
memcpy(&plugin.Info.dwPluginId1, "DBM0", 4);
|
|
memcpy(&plugin.Info.dwPluginId2, "Echo", 4);
|
|
plugin.Info.routingFlags = SNDMIXPLUGININFO::irAutoSuspend;
|
|
plugin.Info.mixMode = 0;
|
|
plugin.Info.gain = 10;
|
|
plugin.Info.reserved = 0;
|
|
plugin.Info.dwOutputRouting = 0;
|
|
std::fill(plugin.Info.dwReserved, plugin.Info.dwReserved + std::size(plugin.Info.dwReserved), 0);
|
|
plugin.Info.szName = "Echo";
|
|
plugin.Info.szLibraryName = "DigiBooster Pro Echo";
|
|
|
|
plugin.pluginData.resize(sizeof(DigiBoosterEcho::PluginChunk));
|
|
DigiBoosterEcho::PluginChunk chunk = DigiBoosterEcho::PluginChunk::Create(settings[1], settings[3], settings[5], settings[7]);
|
|
new (plugin.pluginData.data()) DigiBoosterEcho::PluginChunk(chunk);
|
|
}
|
|
}
|
|
|
|
// Encode echo parameters into fixed MIDI macros
|
|
if(hasEchoParams)
|
|
{
|
|
for(uint32 i = 0; i < 32; i++)
|
|
{
|
|
uint32 param = (i * 127u) / 32u;
|
|
m_MidiCfg.Zxx[i ] = MPT_AFORMAT("F0F080{}")(mpt::afmt::HEX0<2>(param));
|
|
m_MidiCfg.Zxx[i + 32] = MPT_AFORMAT("F0F081{}")(mpt::afmt::HEX0<2>(param));
|
|
m_MidiCfg.Zxx[i + 64] = MPT_AFORMAT("F0F082{}")(mpt::afmt::HEX0<2>(param));
|
|
m_MidiCfg.Zxx[i + 96] = MPT_AFORMAT("F0F083{}")(mpt::afmt::HEX0<2>(param));
|
|
}
|
|
}
|
|
#endif // NO_PLUGINS
|
|
|
|
// Samples
|
|
FileReader sampleChunk = chunks.GetChunk(DBMChunk::idSMPL);
|
|
if(sampleChunk.IsValid() && (loadFlags & loadSampleData))
|
|
{
|
|
for(SAMPLEINDEX smp = 1; smp <= GetNumSamples(); smp++)
|
|
{
|
|
uint32 sampleFlags = sampleChunk.ReadUint32BE();
|
|
uint32 sampleLength = sampleChunk.ReadUint32BE();
|
|
|
|
if(sampleFlags & 7)
|
|
{
|
|
ModSample &sample = Samples[smp];
|
|
sample.nLength = sampleLength;
|
|
|
|
SampleIO(
|
|
(sampleFlags & 4) ? SampleIO::_32bit : ((sampleFlags & 2) ? SampleIO::_16bit : SampleIO::_8bit),
|
|
SampleIO::mono,
|
|
SampleIO::bigEndian,
|
|
SampleIO::signedPCM)
|
|
.ReadSample(sample, sampleChunk);
|
|
}
|
|
}
|
|
}
|
|
|
|
#if defined(MPT_ENABLE_MP3_SAMPLES) && 0
|
|
// Compressed samples - this does not quite work yet...
|
|
FileReader mpegChunk = chunks.GetChunk(DBMChunk::idMPEG);
|
|
if(mpegChunk.IsValid() && (loadFlags & loadSampleData))
|
|
{
|
|
for(SAMPLEINDEX smp = 1; smp <= GetNumSamples(); smp++)
|
|
{
|
|
Samples[smp].nLength = mpegChunk.ReadUint32BE();
|
|
}
|
|
mpegChunk.Skip(2); // 0x00 0x40
|
|
|
|
// Read whole MPEG stream into one sample and then split it up.
|
|
FileReader chunk = mpegChunk.GetChunk(mpegChunk.BytesLeft());
|
|
if(ReadMP3Sample(0, chunk, true))
|
|
{
|
|
ModSample &srcSample = Samples[0];
|
|
const std::byte *smpData = srcSample.sampleb();
|
|
SmpLength predelay = Util::muldiv_unsigned(20116, srcSample.nC5Speed, 100000);
|
|
LimitMax(predelay, srcSample.nLength);
|
|
smpData += predelay * srcSample.GetBytesPerSample();
|
|
srcSample.nLength -= predelay;
|
|
|
|
for(SAMPLEINDEX smp = 1; smp <= GetNumSamples(); smp++)
|
|
{
|
|
ModSample &sample = Samples[smp];
|
|
sample.uFlags.set(srcSample.uFlags);
|
|
LimitMax(sample.nLength, srcSample.nLength);
|
|
if(sample.nLength)
|
|
{
|
|
sample.AllocateSample();
|
|
memcpy(sample.sampleb(), smpData, sample.GetSampleSizeInBytes());
|
|
smpData += sample.GetSampleSizeInBytes();
|
|
srcSample.nLength -= sample.nLength;
|
|
SmpLength gap = Util::muldiv_unsigned(454, srcSample.nC5Speed, 10000);
|
|
LimitMax(gap, srcSample.nLength);
|
|
smpData += gap * srcSample.GetBytesPerSample();
|
|
srcSample.nLength -= gap;
|
|
}
|
|
}
|
|
srcSample.FreeSample();
|
|
}
|
|
}
|
|
#endif // MPT_ENABLE_MP3_SAMPLES
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
OPENMPT_NAMESPACE_END
|