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Diffstat (limited to 'engines/sci/sound/decoders/sol.h')
-rw-r--r-- | engines/sci/sound/decoders/sol.h | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/engines/sci/sound/decoders/sol.h b/engines/sci/sound/decoders/sol.h new file mode 100644 index 0000000000..1046d0b213 --- /dev/null +++ b/engines/sci/sound/decoders/sol.h @@ -0,0 +1,89 @@ +/* ScummVM - Graphic Adventure Engine + * + * ScummVM is the legal property of its developers, whose names + * are too numerous to list here. Please refer to the COPYRIGHT + * file distributed with this source distribution. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + */ + +#ifndef SCI_SOUND_DECODERS_SOL_H +#define SCI_SOUND_DECODERS_SOL_H +#include "audio/audiostream.h" +#include "common/stream.h" + +namespace Sci { + +enum SOLFlags { + kCompressed = 1, + k16Bit = 4, + kStereo = 16 +}; + +template <bool STEREO, bool S16BIT> +class SOLStream : public Audio::SeekableAudioStream { +private: + /** + * Read stream containing possibly-compressed SOL audio. + */ + Common::DisposablePtr<Common::SeekableReadStream> _stream; + + /** + * Start offset of the audio data in the read stream. + */ + int32 _dataOffset; + + /** + * Sample rate of audio data. + */ + uint16 _sampleRate; + + /** + * The raw (possibly-compressed) size of audio data in + * the stream. + */ + int32 _rawDataSize; + + /** + * The last sample from the previous DPCM decode. + */ + union { + int16 _dpcmCarry16; + uint8 _dpcmCarry8; + }; + + /** + * The calculated length of the stream. + */ + Audio::Timestamp _length; + + virtual bool seek(const Audio::Timestamp &where) override; + virtual Audio::Timestamp getLength() const override; + virtual int readBuffer(int16 *buffer, const int numSamples) override; + virtual bool isStereo() const override; + virtual int getRate() const override; + virtual bool endOfData() const override; + virtual bool rewind() override; + +public: + SOLStream(Common::SeekableReadStream *stream, const DisposeAfterUse::Flag disposeAfterUse, const int32 dataOffset, const uint16 sampleRate, const int32 rawDataSize); +}; + +Audio::SeekableAudioStream *makeSOLStream(Common::SeekableReadStream *stream, DisposeAfterUse::Flag disposeAfterUse); + +Audio::SeekableAudioStream *makeSOLStream(Common::SeekableReadStream *headerStream, Common::SeekableReadStream *dataStream, DisposeAfterUse::Flag disposeAfterUse); +} +#endif |