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author | Matthew Hoops | 2010-05-31 21:29:43 +0000 |
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committer | Matthew Hoops | 2010-05-31 21:29:43 +0000 |
commit | 2138fe0d5afbcb8566c90e8338a5c2896282772f (patch) | |
tree | fc2938e2db7237c7871f172a0917652ce40d3326 /graphics/video/smk_decoder.cpp | |
parent | 844ef9ba1a08de70058cfa8014f55a801b7c77aa (diff) | |
download | scummvm-rg350-2138fe0d5afbcb8566c90e8338a5c2896282772f.tar.gz scummvm-rg350-2138fe0d5afbcb8566c90e8338a5c2896282772f.tar.bz2 scummvm-rg350-2138fe0d5afbcb8566c90e8338a5c2896282772f.zip |
Fix our interpretation of the audio compression types to what FFmpeg currently does. Should fix bug #3009282.
svn-id: r49362
Diffstat (limited to 'graphics/video/smk_decoder.cpp')
-rw-r--r-- | graphics/video/smk_decoder.cpp | 35 |
1 files changed, 22 insertions, 13 deletions
diff --git a/graphics/video/smk_decoder.cpp b/graphics/video/smk_decoder.cpp index adc96a7820..0b7de774eb 100644 --- a/graphics/video/smk_decoder.cpp +++ b/graphics/video/smk_decoder.cpp @@ -422,27 +422,36 @@ bool SmackerDecoder::load(Common::SeekableReadStream &stream) { for (i = 0; i < 7; ++i) { // AudioRate - Frequency and format information for each sound track, up to 7 audio tracks. // The 32 constituent bits have the following meaning: - // * bit 31 - data is compressed + // * bit 31 - indicates Huffman + DPCM compression // * bit 30 - indicates that audio data is present for this track // * bit 29 - 1 = 16-bit audio; 0 = 8-bit audio // * bit 28 - 1 = stereo audio; 0 = mono audio - // * bits 27-26 - if both set to zero - use v2 sound decompression + // * bit 27 - indicates Bink RDFT compression + // * bit 26 - indicates Bink DCT compression // * bits 25-24 - unused // * bits 23-0 - audio sample rate uint32 audioInfo = _fileStream->readUint32LE(); - _header.audioInfo[i].isCompressed = audioInfo & 0x80000000; _header.audioInfo[i].hasAudio = audioInfo & 0x40000000; _header.audioInfo[i].is16Bits = audioInfo & 0x20000000; _header.audioInfo[i].isStereo = audioInfo & 0x10000000; - _header.audioInfo[i].hasV2Compression = !(audioInfo & 0x8000000) && - !(audioInfo & 0x4000000); _header.audioInfo[i].sampleRate = audioInfo & 0xFFFFFF; - if (_header.audioInfo[i].hasV2Compression) - warning("Unhandled Smacker v2 audio compression"); + if (audioInfo & 0x8000000) + _header.audioInfo[i].compression = kCompressionRDFT; + else if (audioInfo & 0x4000000) + _header.audioInfo[i].compression = kCompressionDCT; + else if (audioInfo & 0x80000000) + _header.audioInfo[i].compression = kCompressionDPCM; + else + _header.audioInfo[i].compression = kCompressionNone; + + if (_header.audioInfo[i].hasAudio) { + if (_header.audioInfo[i].compression == kCompressionRDFT || _header.audioInfo[i].compression == kCompressionDCT) + warning("Unhandled Smacker v2 audio compression"); - if (_header.audioInfo[i].hasAudio && i == 0) - _audioStream = Audio::makeQueuingAudioStream(_header.audioInfo[0].sampleRate, _header.audioInfo[0].isStereo); + if (i == 0) + _audioStream = Audio::makeQueuingAudioStream(_header.audioInfo[0].sampleRate, _header.audioInfo[0].isStereo); + } } _header.dummy = _fileStream->readUint32LE(); @@ -531,7 +540,7 @@ Surface *SmackerDecoder::decodeNextFrame() { chunkSize = _fileStream->readUint32LE(); chunkSize -= 4; // subtract the first 4 bytes (chunk size) - if (_header.audioInfo[i].isCompressed) { + if (_header.audioInfo[i].compression != kCompressionNone) { dataSizeUnpacked = _fileStream->readUint32LE(); chunkSize -= 4; // subtract the next 4 bytes (unpacked data size) } else { @@ -544,11 +553,11 @@ Surface *SmackerDecoder::decodeNextFrame() { _fileStream->read(soundBuffer, chunkSize); - if (_header.audioInfo[i].hasV2Compression) { - // TODO: Compressed audio (Bink RDFT encoded) + if (_header.audioInfo[i].compression == kCompressionRDFT || _header.audioInfo[i].compression == kCompressionDCT) { + // TODO: Compressed audio (Bink RDFT/DCT encoded) free(soundBuffer); continue; - } else if (_header.audioInfo[i].isCompressed) { + } else if (_header.audioInfo[i].compression == kCompressionDPCM) { // Compressed audio (Huffman DPCM encoded) queueCompressedBuffer(soundBuffer, chunkSize, dataSizeUnpacked, i); free(soundBuffer); |