diff options
Diffstat (limited to 'engines/zvision/zork_raw.cpp')
| -rw-r--r-- | engines/zvision/zork_raw.cpp | 130 |
1 files changed, 82 insertions, 48 deletions
diff --git a/engines/zvision/zork_raw.cpp b/engines/zvision/zork_raw.cpp index 21613d9043..029600b758 100644 --- a/engines/zvision/zork_raw.cpp +++ b/engines/zvision/zork_raw.cpp @@ -41,65 +41,62 @@ namespace ZVision { -const int16 RawZorkStream::_stepAdjustmentTable[8] = {-1, -1, -1, 1, 4, 7, 10, 12}; - -const int32 RawZorkStream::_amplitudeLookupTable[89] = {0x0007, 0x0008, 0x0009, 0x000A, 0x000B, 0x000C, 0x000D, 0x000E, - 0x0010, 0x0011, 0x0013, 0x0015, 0x0017, 0x0019, 0x001C, 0x001F, - 0x0022, 0x0025, 0x0029, 0x002D, 0x0032, 0x0037, 0x003C, 0x0042, - 0x0049, 0x0050, 0x0058, 0x0061, 0x006B, 0x0076, 0x0082, 0x008F, - 0x009D, 0x00AD, 0x00BE, 0x00D1, 0x00E6, 0x00FD, 0x0117, 0x0133, - 0x0151, 0x0173, 0x0198, 0x01C1, 0x01EE, 0x0220, 0x0256, 0x0292, - 0x02D4, 0x031C, 0x036C, 0x03C3, 0x0424, 0x048E, 0x0502, 0x0583, - 0x0610, 0x06AB, 0x0756, 0x0812, 0x08E0, 0x09C3, 0x0ABD, 0x0BD0, - 0x0CFF, 0x0E4C, 0x0FBA, 0x114C, 0x1307, 0x14EE, 0x1706, 0x1954, - 0x1BDC, 0x1EA5, 0x21B6, 0x2515, 0x28CA, 0x2CDF, 0x315B, 0x364B, - 0x3BB9, 0x41B2, 0x4844, 0x4F7E, 0x5771, 0x602F, 0x69CE, 0x7462, 0x7FFF}; - -const SoundParams RawZorkStream::_zNemSoundParamLookupTable[6] = {{'6', 0x2B11, false, false}, - {'a', 0x5622, false, true}, - {'b', 0x5622, true, true}, - {'n', 0x2B11, false, true}, - {'s', 0x5622, false, true}, - {'t', 0x5622, true, true} -}; - -const SoundParams RawZorkStream::_zgiSoundParamLookupTable[5] = {{'a',0x5622, false, false}, - {'k',0x2B11, true, true}, - {'p',0x5622, false, true}, - {'q',0x5622, true, true}, - {'u',0xAC44, true, true} -}; - -RawZorkStream::RawZorkStream(uint32 rate, bool stereo, DisposeAfterUse::Flag disposeStream, Common::SeekableReadStream *stream) - : _rate(rate), - _stereo(0), - _stream(stream, disposeStream), - _endOfData(false) { +const int16 RawChunkStream::_stepAdjustmentTable[8] = { -1, -1, -1, 1, 4, 7, 10, 12}; + +const int32 RawChunkStream::_amplitudeLookupTable[89] = {0x0007, 0x0008, 0x0009, 0x000A, 0x000B, 0x000C, 0x000D, 0x000E, + 0x0010, 0x0011, 0x0013, 0x0015, 0x0017, 0x0019, 0x001C, 0x001F, + 0x0022, 0x0025, 0x0029, 0x002D, 0x0032, 0x0037, 0x003C, 0x0042, + 0x0049, 0x0050, 0x0058, 0x0061, 0x006B, 0x0076, 0x0082, 0x008F, + 0x009D, 0x00AD, 0x00BE, 0x00D1, 0x00E6, 0x00FD, 0x0117, 0x0133, + 0x0151, 0x0173, 0x0198, 0x01C1, 0x01EE, 0x0220, 0x0256, 0x0292, + 0x02D4, 0x031C, 0x036C, 0x03C3, 0x0424, 0x048E, 0x0502, 0x0583, + 0x0610, 0x06AB, 0x0756, 0x0812, 0x08E0, 0x09C3, 0x0ABD, 0x0BD0, + 0x0CFF, 0x0E4C, 0x0FBA, 0x114C, 0x1307, 0x14EE, 0x1706, 0x1954, + 0x1BDC, 0x1EA5, 0x21B6, 0x2515, 0x28CA, 0x2CDF, 0x315B, 0x364B, + 0x3BB9, 0x41B2, 0x4844, 0x4F7E, 0x5771, 0x602F, 0x69CE, 0x7462, 0x7FFF + }; + +RawChunkStream::RawChunkStream(bool stereo) { if (stereo) _stereo = 1; + else + _stereo = 0; + + init(); +} +void RawChunkStream::init() { _lastSample[0].index = 0; _lastSample[0].sample = 0; _lastSample[1].index = 0; _lastSample[1].sample = 0; +} - // Calculate the total playtime of the stream - if (stereo) - _playtime = Audio::Timestamp(0, _stream->size() / 2, rate); - else - _playtime = Audio::Timestamp(0, _stream->size(), rate); +RawChunkStream::RawChunk RawChunkStream::readNextChunk(Common::SeekableReadStream *stream) { + RawChunk tmp; + tmp.size = 0; + tmp.data = NULL; + + if (stream && (stream->size() == 0 || stream->eos())) + return tmp; + + tmp.size = (stream->size() - stream->pos()) * 2; + tmp.data = (int16 *)calloc(tmp.size, 1); + + readBuffer(tmp.data, stream, stream->size() - stream->pos()); + + return tmp; } -int RawZorkStream::readBuffer(int16 *buffer, const int numSamples) { - int bytesRead = 0; +int RawChunkStream::readBuffer(int16 *buffer, Common::SeekableReadStream *stream, const int numSamples) { + int32 bytesRead = 0; // 0: Left, 1: Right uint channel = 0; while (bytesRead < numSamples) { - byte encodedSample = _stream->readByte(); - if (_stream->eos()) { - _endOfData = true; + byte encodedSample = stream->readByte(); + if (stream->eos()) { return bytesRead; } bytesRead++; @@ -140,6 +137,46 @@ int RawZorkStream::readBuffer(int16 *buffer, const int numSamples) { // Increment and wrap the channel channel = (channel + 1) & _stereo; } + return bytesRead; +} + +const SoundParams RawZorkStream::_zNemSoundParamLookupTable[6] = {{'6', 0x2B11, false, false}, + {'a', 0x5622, false, true}, + {'b', 0x5622, true, true}, + {'n', 0x2B11, false, true}, + {'s', 0x5622, false, true}, + {'t', 0x5622, true, true} +}; + +const SoundParams RawZorkStream::_zgiSoundParamLookupTable[5] = {{'a', 0x5622, false, false}, + {'k', 0x2B11, true, true}, + {'p', 0x5622, false, true}, + {'q', 0x5622, true, true}, + {'u', 0xAC44, true, true} +}; + +RawZorkStream::RawZorkStream(uint32 rate, bool stereo, DisposeAfterUse::Flag disposeStream, Common::SeekableReadStream *stream) + : _rate(rate), + _stereo(0), + _stream(stream, disposeStream), + _endOfData(false), + _streamReader(stereo) { + if (stereo) + _stereo = 1; + + // Calculate the total playtime of the stream + if (stereo) + _playtime = Audio::Timestamp(0, _stream->size() / 2, rate); + else + _playtime = Audio::Timestamp(0, _stream->size(), rate); +} + +int RawZorkStream::readBuffer(int16 *buffer, const int numSamples) { + + int32 bytesRead = _streamReader.readBuffer(buffer, _stream.get(), numSamples); + + if (_stream->eos()) + _endOfData = true; return bytesRead; } @@ -148,10 +185,7 @@ bool RawZorkStream::rewind() { _stream->seek(0, 0); _stream->clearErr(); _endOfData = false; - _lastSample[0].index = 0; - _lastSample[0].sample = 0; - _lastSample[1].index = 0; - _lastSample[1].sample = 0; + _streamReader.init(); return true; } |