diff options
Diffstat (limited to 'video/smk_decoder.cpp')
| -rw-r--r-- | video/smk_decoder.cpp | 31 |
1 files changed, 15 insertions, 16 deletions
diff --git a/video/smk_decoder.cpp b/video/smk_decoder.cpp index d8057ac068..55b43bd746 100644 --- a/video/smk_decoder.cpp +++ b/video/smk_decoder.cpp @@ -29,7 +29,6 @@ #include "common/endian.h" #include "common/util.h" #include "common/stream.h" -#include "common/memstream.h" #include "common/bitstream.h" #include "common/system.h" #include "common/textconsole.h" @@ -54,9 +53,9 @@ enum SmkBlockTypes { class SmallHuffmanTree { public: - SmallHuffmanTree(Common::BitStream8LSB &bs); + SmallHuffmanTree(Common::BitStreamMemory8LSB &bs); - uint16 getCode(Common::BitStream8LSB &bs); + uint16 getCode(Common::BitStreamMemory8LSB &bs); private: enum { SMK_NODE = 0x8000 @@ -70,10 +69,10 @@ private: uint16 _prefixtree[256]; byte _prefixlength[256]; - Common::BitStream8LSB &_bs; + Common::BitStreamMemory8LSB &_bs; }; -SmallHuffmanTree::SmallHuffmanTree(Common::BitStream8LSB &bs) +SmallHuffmanTree::SmallHuffmanTree(Common::BitStreamMemory8LSB &bs) : _treeSize(0), _bs(bs) { uint32 bit = _bs.getBit(); assert(bit); @@ -118,7 +117,7 @@ uint16 SmallHuffmanTree::decodeTree(uint32 prefix, int length) { return r1+r2+1; } -uint16 SmallHuffmanTree::getCode(Common::BitStream8LSB &bs) { +uint16 SmallHuffmanTree::getCode(Common::BitStreamMemory8LSB &bs) { byte peek = bs.peekBits(MIN<uint32>(bs.size() - bs.pos(), 8)); uint16 *p = &_tree[_prefixtree[peek]]; bs.skip(_prefixlength[peek]); @@ -139,11 +138,11 @@ uint16 SmallHuffmanTree::getCode(Common::BitStream8LSB &bs) { class BigHuffmanTree { public: - BigHuffmanTree(Common::BitStream8LSB &bs, int allocSize); + BigHuffmanTree(Common::BitStreamMemory8LSB &bs, int allocSize); ~BigHuffmanTree(); void reset(); - uint32 getCode(Common::BitStream8LSB &bs); + uint32 getCode(Common::BitStreamMemory8LSB &bs); private: enum { SMK_NODE = 0x80000000 @@ -159,13 +158,13 @@ private: byte _prefixlength[256]; /* Used during construction */ - Common::BitStream8LSB &_bs; + Common::BitStreamMemory8LSB &_bs; uint32 _markers[3]; SmallHuffmanTree *_loBytes; SmallHuffmanTree *_hiBytes; }; -BigHuffmanTree::BigHuffmanTree(Common::BitStream8LSB &bs, int allocSize) +BigHuffmanTree::BigHuffmanTree(Common::BitStreamMemory8LSB &bs, int allocSize) : _bs(bs) { uint32 bit = _bs.getBit(); if (!bit) { @@ -256,7 +255,7 @@ uint32 BigHuffmanTree::decodeTree(uint32 prefix, int length) { return r1+r2+1; } -uint32 BigHuffmanTree::getCode(Common::BitStream8LSB &bs) { +uint32 BigHuffmanTree::getCode(Common::BitStreamMemory8LSB &bs) { byte peek = bs.peekBits(MIN<uint32>(bs.size() - bs.pos(), 8)); uint32 *p = &_tree[_prefixtree[peek]]; bs.skip(_prefixlength[peek]); @@ -386,7 +385,7 @@ bool SmackerDecoder::loadStream(Common::SeekableReadStream *stream) { byte *huffmanTrees = (byte *) malloc(_header.treesSize); _fileStream->read(huffmanTrees, _header.treesSize); - Common::BitStream8LSB bs(new Common::MemoryReadStream(huffmanTrees, _header.treesSize, DisposeAfterUse::YES), DisposeAfterUse::YES); + Common::BitStreamMemory8LSB bs(new Common::BitStreamMemoryStream(huffmanTrees, _header.treesSize, DisposeAfterUse::YES), DisposeAfterUse::YES); videoTrack->readTrees(bs, _header.mMapSize, _header.mClrSize, _header.fullSize, _header.typeSize); _firstFrameStart = _fileStream->pos(); @@ -469,7 +468,7 @@ void SmackerDecoder::readNextPacket() { _fileStream->read(frameData, frameDataSize); - Common::BitStream8LSB bs(new Common::MemoryReadStream(frameData, frameDataSize + 1, DisposeAfterUse::YES), DisposeAfterUse::YES); + Common::BitStreamMemory8LSB bs(new Common::BitStreamMemoryStream(frameData, frameDataSize + 1, DisposeAfterUse::YES), DisposeAfterUse::YES); videoTrack->decodeFrame(bs); _fileStream->seek(startPos + frameSize); @@ -553,14 +552,14 @@ Graphics::PixelFormat SmackerDecoder::SmackerVideoTrack::getPixelFormat() const return _surface->format; } -void SmackerDecoder::SmackerVideoTrack::readTrees(Common::BitStream8LSB &bs, uint32 mMapSize, uint32 mClrSize, uint32 fullSize, uint32 typeSize) { +void SmackerDecoder::SmackerVideoTrack::readTrees(Common::BitStreamMemory8LSB &bs, uint32 mMapSize, uint32 mClrSize, uint32 fullSize, uint32 typeSize) { _MMapTree = new BigHuffmanTree(bs, mMapSize); _MClrTree = new BigHuffmanTree(bs, mClrSize); _FullTree = new BigHuffmanTree(bs, fullSize); _TypeTree = new BigHuffmanTree(bs, typeSize); } -void SmackerDecoder::SmackerVideoTrack::decodeFrame(Common::BitStream8LSB &bs) { +void SmackerDecoder::SmackerVideoTrack::decodeFrame(Common::BitStreamMemory8LSB &bs) { _MMapTree->reset(); _MClrTree->reset(); _FullTree->reset(); @@ -774,7 +773,7 @@ Audio::AudioStream *SmackerDecoder::SmackerAudioTrack::getAudioStream() const { } void SmackerDecoder::SmackerAudioTrack::queueCompressedBuffer(byte *buffer, uint32 bufferSize, uint32 unpackedSize) { - Common::BitStream8LSB audioBS(new Common::MemoryReadStream(buffer, bufferSize), DisposeAfterUse::YES); + Common::BitStreamMemory8LSB audioBS(new Common::BitStreamMemoryStream(buffer, bufferSize), DisposeAfterUse::YES); bool dataPresent = audioBS.getBit(); if (!dataPresent) |