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bink_decoder.cpp
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bink_decoder.cpp
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/* 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.
*
*/
// Based on eos' Bink decoder which is in turn
// based quite heavily on the Bink decoder found in FFmpeg.
// Many thanks to Kostya Shishkov for doing the hard work.
#include "audio/audiostream.h"
#include "audio/decoders/raw.h"
#include "common/util.h"
#include "common/textconsole.h"
#include "common/math.h"
#include "common/stream.h"
#include "common/substream.h"
#include "common/file.h"
#include "common/str.h"
#include "common/bitstream.h"
#include "common/huffman.h"
#include "common/rdft.h"
#include "common/dct.h"
#include "common/system.h"
#include "graphics/yuv_to_rgb.h"
#include "graphics/surface.h"
#include "video/binkdata.h"
#include "video/bink_decoder.h"
static const uint32 kBIKfID = MKTAG('B', 'I', 'K', 'f');
static const uint32 kBIKgID = MKTAG('B', 'I', 'K', 'g');
static const uint32 kBIKhID = MKTAG('B', 'I', 'K', 'h');
static const uint32 kBIKiID = MKTAG('B', 'I', 'K', 'i');
static const uint32 kVideoFlagAlpha = 0x00100000;
static const uint16 kAudioFlagDCT = 0x1000;
static const uint16 kAudioFlagStereo = 0x2000;
// Number of bits used to store first DC value in bundle
static const uint32 kDCStartBits = 11;
namespace Video {
BinkDecoder::BinkDecoder() {
_bink = 0;
}
BinkDecoder::~BinkDecoder() {
close();
}
bool BinkDecoder::loadStream(Common::SeekableReadStream *stream) {
close();
uint32 id = stream->readUint32BE();
if ((id != kBIKfID) && (id != kBIKgID) && (id != kBIKhID) && (id != kBIKiID))
return false;
uint32 fileSize = stream->readUint32LE() + 8;
uint32 frameCount = stream->readUint32LE();
uint32 largestFrameSize = stream->readUint32LE();
if (largestFrameSize > fileSize) {
warning("Largest frame size greater than file size");
return false;
}
stream->skip(4);
uint32 width = stream->readUint32LE();
uint32 height = stream->readUint32LE();
uint32 frameRateNum = stream->readUint32LE();
uint32 frameRateDen = stream->readUint32LE();
if (frameRateNum == 0 || frameRateDen == 0) {
warning("Invalid frame rate (%d/%d)", frameRateNum, frameRateDen);
return false;
}
_bink = stream;
uint32 videoFlags = _bink->readUint32LE();
// BIKh and BIKi swap the chroma planes
addTrack(new BinkVideoTrack(width, height, getDefaultHighColorFormat(), frameCount,
Common::Rational(frameRateNum, frameRateDen), (id == kBIKhID || id == kBIKiID), videoFlags & kVideoFlagAlpha, id));
uint32 audioTrackCount = _bink->readUint32LE();
if (audioTrackCount > 0) {
_audioTracks.resize(audioTrackCount);
_bink->skip(4 * audioTrackCount);
// Reading audio track properties
for (uint32 i = 0; i < audioTrackCount; i++) {
AudioInfo &track = _audioTracks[i];
track.sampleRate = _bink->readUint16LE();
track.flags = _bink->readUint16LE();
initAudioTrack(track);
}
_bink->skip(4 * audioTrackCount);
}
// Reading video frame properties
_frames.resize(frameCount);
for (uint32 i = 0; i < frameCount; i++) {
_frames[i].offset = _bink->readUint32LE();
_frames[i].keyFrame = _frames[i].offset & 1;
_frames[i].offset &= ~1;
if (i != 0)
_frames[i - 1].size = _frames[i].offset - _frames[i - 1].offset;
_frames[i].bits = 0;
}
_frames[frameCount - 1].size = _bink->size() - _frames[frameCount - 1].offset;
return true;
}
void BinkDecoder::close() {
VideoDecoder::close();
delete _bink;
_bink = 0;
_audioTracks.clear();
_frames.clear();
}
void BinkDecoder::readNextPacket() {
BinkVideoTrack *videoTrack = (BinkVideoTrack *)getTrack(0);
if (videoTrack->endOfTrack())
return;
VideoFrame &frame = _frames[videoTrack->getCurFrame() + 1];
if (!_bink->seek(frame.offset))
error("Bad bink seek");
uint32 frameSize = frame.size;
for (uint32 i = 0; i < _audioTracks.size(); i++) {
AudioInfo &audio = _audioTracks[i];
uint32 audioPacketLength = _bink->readUint32LE();
frameSize -= 4;
if (frameSize < audioPacketLength)
error("Audio packet too big for the frame");
if (audioPacketLength >= 4) {
// Get our track - audio index plus one as the first track is video
BinkAudioTrack *audioTrack = (BinkAudioTrack *)getTrack(i + 1);
uint32 audioPacketStart = _bink->pos();
uint32 audioPacketEnd = _bink->pos() + audioPacketLength;
// Number of samples in bytes
audio.sampleCount = _bink->readUint32LE() / (2 * audio.channels);
audio.bits = new Common::BitStream32LELSB(new Common::SeekableSubReadStream(_bink,
audioPacketStart + 4, audioPacketEnd), DisposeAfterUse::YES);
audioTrack->decodePacket();
delete audio.bits;
audio.bits = 0;
_bink->seek(audioPacketEnd);
frameSize -= audioPacketLength;
}
}
uint32 videoPacketStart = _bink->pos();
uint32 videoPacketEnd = _bink->pos() + frameSize;
frame.bits = new Common::BitStream32LELSB(new Common::SeekableSubReadStream(_bink,
videoPacketStart, videoPacketEnd), DisposeAfterUse::YES);
videoTrack->decodePacket(frame);
delete frame.bits;
frame.bits = 0;
}
VideoDecoder::AudioTrack *BinkDecoder::getAudioTrack(int index) {
// Bink audio track indexes are relative to the first audio track
Track *track = getTrack(index + 1);
if (!track || track->getTrackType() != Track::kTrackTypeAudio)
return 0;
return (AudioTrack *)track;
}
BinkDecoder::VideoFrame::VideoFrame() : bits(0) {
}
BinkDecoder::VideoFrame::~VideoFrame() {
delete bits;
}
BinkDecoder::AudioInfo::AudioInfo() : bits(0), bands(0), rdft(0), dct(0) {
}
BinkDecoder::AudioInfo::~AudioInfo() {
delete bits;
delete[] bands;
delete rdft;
delete dct;
}
BinkDecoder::BinkVideoTrack::BinkVideoTrack(uint32 width, uint32 height, const Graphics::PixelFormat &format, uint32 frameCount, const Common::Rational &frameRate, bool swapPlanes, bool hasAlpha, uint32 id) :
_frameCount(frameCount), _frameRate(frameRate), _swapPlanes(swapPlanes), _hasAlpha(hasAlpha), _id(id) {
_curFrame = -1;
for (int i = 0; i < 16; i++)
_huffman[i] = 0;
for (int i = 0; i < kSourceMAX; i++) {
_bundles[i].countLength = 0;
_bundles[i].huffman.index = 0;
for (int j = 0; j < 16; j++)
_bundles[i].huffman.symbols[j] = j;
_bundles[i].data = 0;
_bundles[i].dataEnd = 0;
_bundles[i].curDec = 0;
_bundles[i].curPtr = 0;
}
for (int i = 0; i < 16; i++) {
_colHighHuffman[i].index = 0;
for (int j = 0; j < 16; j++)
_colHighHuffman[i].symbols[j] = j;
}
// Make the surface even-sized:
_surfaceHeight = height;
_surfaceWidth = width;
if (height & 1) {
_surfaceHeight++;
}
if (width & 1) {
_surfaceWidth++;
}
_surface.create(_surfaceWidth, _surfaceHeight, format);
// Since we over-allocate to make surfaces even-sized
// we need to set the actual VIDEO size back into the
// surface.
_surface.h = height;
_surface.w = width;
// Compute the video dimensions in blocks
_yBlockWidth = (width + 7) >> 3;
_yBlockHeight = (height + 7) >> 3;
_uvBlockWidth = (width + 15) >> 4;
_uvBlockHeight = (height + 15) >> 4;
// The planes are sized according to the number of blocks
_curPlanes[0] = new byte[_yBlockWidth * 8 * _yBlockHeight * 8]; // Y
_curPlanes[1] = new byte[_uvBlockWidth * 8 * _uvBlockHeight * 8]; // U, 1/4 resolution
_curPlanes[2] = new byte[_uvBlockWidth * 8 * _uvBlockHeight * 8]; // V, 1/4 resolution
_curPlanes[3] = new byte[_yBlockWidth * 8 * _yBlockHeight * 8]; // A
_oldPlanes[0] = new byte[_yBlockWidth * 8 * _yBlockHeight * 8]; // Y
_oldPlanes[1] = new byte[_uvBlockWidth * 8 * _uvBlockHeight * 8]; // U, 1/4 resolution
_oldPlanes[2] = new byte[_uvBlockWidth * 8 * _uvBlockHeight * 8]; // V, 1/4 resolution
_oldPlanes[3] = new byte[_yBlockWidth * 8 * _yBlockHeight * 8]; // A
// Initialize the video with solid green
memset(_curPlanes[0], 0, _yBlockWidth * 8 * _yBlockHeight * 8);
memset(_curPlanes[1], 0, _uvBlockWidth * 8 * _uvBlockHeight * 8);
memset(_curPlanes[2], 0, _uvBlockWidth * 8 * _uvBlockHeight * 8);
memset(_curPlanes[3], 255, _yBlockWidth * 8 * _yBlockHeight * 8);
memset(_oldPlanes[0], 0, _yBlockWidth * 8 * _yBlockHeight * 8);
memset(_oldPlanes[1], 0, _uvBlockWidth * 8 * _uvBlockHeight * 8);
memset(_oldPlanes[2], 0, _uvBlockWidth * 8 * _uvBlockHeight * 8);
memset(_oldPlanes[3], 255, _yBlockWidth * 8 * _yBlockHeight * 8);
initBundles();
initHuffman();
}
BinkDecoder::BinkVideoTrack::~BinkVideoTrack() {
for (int i = 0; i < 4; i++) {
delete[] _curPlanes[i]; _curPlanes[i] = 0;
delete[] _oldPlanes[i]; _oldPlanes[i] = 0;
}
deinitBundles();
for (int i = 0; i < 16; i++) {
delete _huffman[i];
_huffman[i] = 0;
}
_surface.free();
}
void BinkDecoder::BinkVideoTrack::decodePacket(VideoFrame &frame) {
assert(frame.bits);
if (_hasAlpha) {
if (_id == kBIKiID)
frame.bits->skip(32);
decodePlane(frame, 3, false);
}
if (_id == kBIKiID)
frame.bits->skip(32);
for (int i = 0; i < 3; i++) {
int planeIdx = ((i == 0) || !_swapPlanes) ? i : (i ^ 3);
decodePlane(frame, planeIdx, i != 0);
if (frame.bits->pos() >= frame.bits->size())
break;
}
// Convert the YUV data we have to our format
// We're ignoring alpha for now
// The width used here is the surface-width, and not the video-width
// to allow for odd-sized videos.
assert(_curPlanes[0] && _curPlanes[1] && _curPlanes[2]);
YUVToRGBMan.convert420(&_surface, Graphics::YUVToRGBManager::kScaleITU, _curPlanes[0], _curPlanes[1], _curPlanes[2],
_surfaceWidth, _surfaceHeight, _yBlockWidth * 8, _uvBlockWidth * 8);
// And swap the planes with the reference planes
for (int i = 0; i < 4; i++)
SWAP(_curPlanes[i], _oldPlanes[i]);
_curFrame++;
}
void BinkDecoder::BinkVideoTrack::decodePlane(VideoFrame &video, int planeIdx, bool isChroma) {
uint32 blockWidth = isChroma ? _uvBlockWidth : _yBlockWidth;
uint32 blockHeight = isChroma ? _uvBlockHeight : _yBlockHeight;
uint32 width = blockWidth * 8;
uint32 height = blockHeight * 8;
DecodeContext ctx;
ctx.video = &video;
ctx.planeIdx = planeIdx;
ctx.destStart = _curPlanes[planeIdx];
ctx.destEnd = _curPlanes[planeIdx] + width * height;
ctx.prevStart = _oldPlanes[planeIdx];
ctx.prevEnd = _oldPlanes[planeIdx] + width * height;
ctx.pitch = width;
for (int i = 0; i < 64; i++) {
ctx.coordMap[i] = (i & 7) + (i >> 3) * ctx.pitch;
ctx.coordScaledMap1[i] = ((i & 7) * 2 + 0) + (((i >> 3) * 2 + 0) * ctx.pitch);
ctx.coordScaledMap2[i] = ((i & 7) * 2 + 1) + (((i >> 3) * 2 + 0) * ctx.pitch);
ctx.coordScaledMap3[i] = ((i & 7) * 2 + 0) + (((i >> 3) * 2 + 1) * ctx.pitch);
ctx.coordScaledMap4[i] = ((i & 7) * 2 + 1) + (((i >> 3) * 2 + 1) * ctx.pitch);
}
for (int i = 0; i < kSourceMAX; i++) {
_bundles[i].countLength = _bundles[i].countLengths[isChroma ? 1 : 0];
readBundle(video, (Source) i);
}
for (ctx.blockY = 0; ctx.blockY < blockHeight; ctx.blockY++) {
readBlockTypes (video, _bundles[kSourceBlockTypes]);
readBlockTypes (video, _bundles[kSourceSubBlockTypes]);
readColors (video, _bundles[kSourceColors]);
readPatterns (video, _bundles[kSourcePattern]);
readMotionValues(video, _bundles[kSourceXOff]);
readMotionValues(video, _bundles[kSourceYOff]);
readDCS (video, _bundles[kSourceIntraDC], kDCStartBits, false);
readDCS (video, _bundles[kSourceInterDC], kDCStartBits, true);
readRuns (video, _bundles[kSourceRun]);
ctx.dest = ctx.destStart + 8 * ctx.blockY * ctx.pitch;
ctx.prev = ctx.prevStart + 8 * ctx.blockY * ctx.pitch;
for (ctx.blockX = 0; ctx.blockX < blockWidth; ctx.blockX++, ctx.dest += 8, ctx.prev += 8) {
BlockType blockType = (BlockType) getBundleValue(kSourceBlockTypes);
// 16x16 block type on odd line means part of the already decoded block, so skip it
if ((ctx.blockY & 1) && (blockType == kBlockScaled)) {
ctx.blockX += 1;
ctx.dest += 8;
ctx.prev += 8;
continue;
}
switch (blockType) {
case kBlockSkip:
blockSkip(ctx);
break;
case kBlockScaled:
blockScaled(ctx);
break;
case kBlockMotion:
blockMotion(ctx);
break;
case kBlockRun:
blockRun(ctx);
break;
case kBlockResidue:
blockResidue(ctx);
break;
case kBlockIntra:
blockIntra(ctx);
break;
case kBlockFill:
blockFill(ctx);
break;
case kBlockInter:
blockInter(ctx);
break;
case kBlockPattern:
blockPattern(ctx);
break;
case kBlockRaw:
blockRaw(ctx);
break;
default:
error("Unknown block type: %d", blockType);
}
}
}
if (video.bits->pos() & 0x1F) // next plane data starts at 32-bit boundary
video.bits->skip(32 - (video.bits->pos() & 0x1F));
}
void BinkDecoder::BinkVideoTrack::readBundle(VideoFrame &video, Source source) {
if (source == kSourceColors) {
for (int i = 0; i < 16; i++)
readHuffman(video, _colHighHuffman[i]);
_colLastVal = 0;
}
if ((source != kSourceIntraDC) && (source != kSourceInterDC))
readHuffman(video, _bundles[source].huffman);
_bundles[source].curDec = _bundles[source].data;
_bundles[source].curPtr = _bundles[source].data;
}
void BinkDecoder::BinkVideoTrack::readHuffman(VideoFrame &video, Huffman &huffman) {
huffman.index = video.bits->getBits(4);
if (huffman.index == 0) {
// The first tree always gives raw nibbles
for (int i = 0; i < 16; i++)
huffman.symbols[i] = i;
return;
}
byte hasSymbol[16];
if (video.bits->getBit()) {
// Symbol selection
memset(hasSymbol, 0, 16);
uint8 length = video.bits->getBits(3);
for (int i = 0; i <= length; i++) {
huffman.symbols[i] = video.bits->getBits(4);
hasSymbol[huffman.symbols[i]] = 1;
}
for (int i = 0; i < 16; i++)
if (hasSymbol[i] == 0)
huffman.symbols[++length] = i;
return;
}
// Symbol shuffling
byte tmp1[16], tmp2[16];
byte *in = tmp1, *out = tmp2;
uint8 depth = video.bits->getBits(2);
for (int i = 0; i < 16; i++)
in[i] = i;
for (int i = 0; i <= depth; i++) {
int size = 1 << i;
for (int j = 0; j < 16; j += (size << 1))
mergeHuffmanSymbols(video, out + j, in + j, size);
SWAP(in, out);
}
memcpy(huffman.symbols, in, 16);
}
void BinkDecoder::BinkVideoTrack::mergeHuffmanSymbols(VideoFrame &video, byte *dst, const byte *src, int size) {
const byte *src2 = src + size;
int size2 = size;
do {
if (!video.bits->getBit()) {
*dst++ = *src++;
size--;
} else {
*dst++ = *src2++;
size2--;
}
} while (size && size2);
while (size--)
*dst++ = *src++;
while (size2--)
*dst++ = *src2++;
}
void BinkDecoder::BinkVideoTrack::initBundles() {
uint32 bw = (_surface.w + 7) >> 3;
uint32 bh = (_surface.h + 7) >> 3;
uint32 blocks = bw * bh;
for (int i = 0; i < kSourceMAX; i++) {
_bundles[i].data = new byte[blocks * 64];
_bundles[i].dataEnd = _bundles[i].data + blocks * 64;
}
uint32 cbw[2] = { (uint32)((_surface.w + 7) >> 3), (uint32)((_surface.w + 15) >> 4) };
uint32 cw [2] = { (uint32)( _surface.w ), (uint32)( _surface.w >> 1) };
// Calculate the lengths of an element count in bits
for (int i = 0; i < 2; i++) {
int width = MAX<uint32>(cw[i], 8);
_bundles[kSourceBlockTypes ].countLengths[i] = Common::intLog2((width >> 3) + 511) + 1;
_bundles[kSourceSubBlockTypes].countLengths[i] = Common::intLog2(((width + 7) >> 4) + 511) + 1;
_bundles[kSourceColors ].countLengths[i] = Common::intLog2((cbw[i]) * 64 + 511) + 1;
_bundles[kSourceIntraDC ].countLengths[i] = Common::intLog2((width >> 3) + 511) + 1;
_bundles[kSourceInterDC ].countLengths[i] = Common::intLog2((width >> 3) + 511) + 1;
_bundles[kSourceXOff ].countLengths[i] = Common::intLog2((width >> 3) + 511) + 1;
_bundles[kSourceYOff ].countLengths[i] = Common::intLog2((width >> 3) + 511) + 1;
_bundles[kSourcePattern ].countLengths[i] = Common::intLog2((cbw[i] << 3) + 511) + 1;
_bundles[kSourceRun ].countLengths[i] = Common::intLog2((cbw[i]) * 48 + 511) + 1;
}
}
void BinkDecoder::BinkVideoTrack::deinitBundles() {
for (int i = 0; i < kSourceMAX; i++)
delete[] _bundles[i].data;
}
void BinkDecoder::BinkVideoTrack::initHuffman() {
for (int i = 0; i < 16; i++)
_huffman[i] = new Common::Huffman<Common::BitStream32LELSB>(binkHuffmanLengths[i][15], 16, binkHuffmanCodes[i], binkHuffmanLengths[i]);
}
byte BinkDecoder::BinkVideoTrack::getHuffmanSymbol(VideoFrame &video, Huffman &huffman) {
return huffman.symbols[_huffman[huffman.index]->getSymbol(*video.bits)];
}
int32 BinkDecoder::BinkVideoTrack::getBundleValue(Source source) {
if ((source < kSourceXOff) || (source == kSourceRun))
return *_bundles[source].curPtr++;
if ((source == kSourceXOff) || (source == kSourceYOff))
return (int8) *_bundles[source].curPtr++;
int16 ret = *((int16 *) _bundles[source].curPtr);
_bundles[source].curPtr += 2;
return ret;
}
uint32 BinkDecoder::BinkVideoTrack::readBundleCount(VideoFrame &video, Bundle &bundle) {
if (!bundle.curDec || (bundle.curDec > bundle.curPtr))
return 0;
uint32 n = video.bits->getBits(bundle.countLength);
if (n == 0)
bundle.curDec = 0;
return n;
}
void BinkDecoder::BinkVideoTrack::blockSkip(DecodeContext &ctx) {
byte *dest = ctx.dest;
byte *prev = ctx.prev;
for (int j = 0; j < 8; j++, dest += ctx.pitch, prev += ctx.pitch)
memcpy(dest, prev, 8);
}
void BinkDecoder::BinkVideoTrack::blockScaledSkip(DecodeContext &ctx) {
byte *dest = ctx.dest;
byte *prev = ctx.prev;
for (int j = 0; j < 16; j++, dest += ctx.pitch, prev += ctx.pitch)
memcpy(dest, prev, 16);
}
void BinkDecoder::BinkVideoTrack::blockScaledRun(DecodeContext &ctx) {
const uint8 *scan = binkPatterns[ctx.video->bits->getBits(4)];
int i = 0;
do {
int run = getBundleValue(kSourceRun) + 1;
i += run;
if (i > 64)
error("Run went out of bounds");
if (ctx.video->bits->getBit()) {
byte v = getBundleValue(kSourceColors);
for (int j = 0; j < run; j++, scan++)
ctx.dest[ctx.coordScaledMap1[*scan]] =
ctx.dest[ctx.coordScaledMap2[*scan]] =
ctx.dest[ctx.coordScaledMap3[*scan]] =
ctx.dest[ctx.coordScaledMap4[*scan]] = v;
} else
for (int j = 0; j < run; j++, scan++)
ctx.dest[ctx.coordScaledMap1[*scan]] =
ctx.dest[ctx.coordScaledMap2[*scan]] =
ctx.dest[ctx.coordScaledMap3[*scan]] =
ctx.dest[ctx.coordScaledMap4[*scan]] = getBundleValue(kSourceColors);
} while (i < 63);
if (i == 63)
ctx.dest[ctx.coordScaledMap1[*scan]] =
ctx.dest[ctx.coordScaledMap2[*scan]] =
ctx.dest[ctx.coordScaledMap3[*scan]] =
ctx.dest[ctx.coordScaledMap4[*scan]] = getBundleValue(kSourceColors);
}
void BinkDecoder::BinkVideoTrack::blockScaledIntra(DecodeContext &ctx) {
int32 block[64];
memset(block, 0, 64 * sizeof(int32));
block[0] = getBundleValue(kSourceIntraDC);
readDCTCoeffs(*ctx.video, block, true);
IDCT(block);
int32 *src = block;
byte *dest1 = ctx.dest;
byte *dest2 = ctx.dest + ctx.pitch;
for (int j = 0; j < 8; j++, dest1 += (ctx.pitch << 1) - 16, dest2 += (ctx.pitch << 1) - 16, src += 8) {
for (int i = 0; i < 8; i++, dest1 += 2, dest2 += 2)
dest1[0] = dest1[1] = dest2[0] = dest2[1] = src[i];
}
}
void BinkDecoder::BinkVideoTrack::blockScaledFill(DecodeContext &ctx) {
byte v = getBundleValue(kSourceColors);
byte *dest = ctx.dest;
for (int i = 0; i < 16; i++, dest += ctx.pitch)
memset(dest, v, 16);
}
void BinkDecoder::BinkVideoTrack::blockScaledPattern(DecodeContext &ctx) {
byte col[2];
for (int i = 0; i < 2; i++)
col[i] = getBundleValue(kSourceColors);
byte *dest1 = ctx.dest;
byte *dest2 = ctx.dest + ctx.pitch;
for (int j = 0; j < 8; j++, dest1 += (ctx.pitch << 1) - 16, dest2 += (ctx.pitch << 1) - 16) {
byte v = getBundleValue(kSourcePattern);
for (int i = 0; i < 8; i++, dest1 += 2, dest2 += 2, v >>= 1)
dest1[0] = dest1[1] = dest2[0] = dest2[1] = col[v & 1];
}
}
void BinkDecoder::BinkVideoTrack::blockScaledRaw(DecodeContext &ctx) {
byte row[8];
byte *dest1 = ctx.dest;
byte *dest2 = ctx.dest + ctx.pitch;
for (int j = 0; j < 8; j++, dest1 += (ctx.pitch << 1) - 16, dest2 += (ctx.pitch << 1) - 16) {
memcpy(row, _bundles[kSourceColors].curPtr, 8);
for (int i = 0; i < 8; i++, dest1 += 2, dest2 += 2)
dest1[0] = dest1[1] = dest2[0] = dest2[1] = row[i];
_bundles[kSourceColors].curPtr += 8;
}
}
void BinkDecoder::BinkVideoTrack::blockScaled(DecodeContext &ctx) {
BlockType blockType = (BlockType) getBundleValue(kSourceSubBlockTypes);
switch (blockType) {
case kBlockRun:
blockScaledRun(ctx);
break;
case kBlockIntra:
blockScaledIntra(ctx);
break;
case kBlockFill:
blockScaledFill(ctx);
break;
case kBlockPattern:
blockScaledPattern(ctx);
break;
case kBlockRaw:
blockScaledRaw(ctx);
break;
default:
error("Invalid 16x16 block type: %d", blockType);
}
ctx.blockX += 1;
ctx.dest += 8;
ctx.prev += 8;
}
void BinkDecoder::BinkVideoTrack::blockMotion(DecodeContext &ctx) {
int8 xOff = getBundleValue(kSourceXOff);
int8 yOff = getBundleValue(kSourceYOff);
byte *dest = ctx.dest;
byte *prev = ctx.prev + yOff * ((int32) ctx.pitch) + xOff;
if ((prev < ctx.prevStart) || (prev > ctx.prevEnd))
error("Copy out of bounds (%d | %d)", ctx.blockX * 8 + xOff, ctx.blockY * 8 + yOff);
for (int j = 0; j < 8; j++, dest += ctx.pitch, prev += ctx.pitch)
memcpy(dest, prev, 8);
}
void BinkDecoder::BinkVideoTrack::blockRun(DecodeContext &ctx) {
const uint8 *scan = binkPatterns[ctx.video->bits->getBits(4)];
int i = 0;
do {
int run = getBundleValue(kSourceRun) + 1;
i += run;
if (i > 64)
error("Run went out of bounds");
if (ctx.video->bits->getBit()) {
byte v = getBundleValue(kSourceColors);
for (int j = 0; j < run; j++)
ctx.dest[ctx.coordMap[*scan++]] = v;
} else
for (int j = 0; j < run; j++)
ctx.dest[ctx.coordMap[*scan++]] = getBundleValue(kSourceColors);
} while (i < 63);
if (i == 63)
ctx.dest[ctx.coordMap[*scan++]] = getBundleValue(kSourceColors);
}
void BinkDecoder::BinkVideoTrack::blockResidue(DecodeContext &ctx) {
blockMotion(ctx);
byte v = ctx.video->bits->getBits(7);
int16 block[64];
memset(block, 0, 64 * sizeof(int16));
readResidue(*ctx.video, block, v);
byte *dst = ctx.dest;
int16 *src = block;
for (int i = 0; i < 8; i++, dst += ctx.pitch, src += 8)
for (int j = 0; j < 8; j++)
dst[j] += src[j];
}
void BinkDecoder::BinkVideoTrack::blockIntra(DecodeContext &ctx) {
int32 block[64];
memset(block, 0, 64 * sizeof(int32));
block[0] = getBundleValue(kSourceIntraDC);
readDCTCoeffs(*ctx.video, block, true);
IDCTPut(ctx, block);
}
void BinkDecoder::BinkVideoTrack::blockFill(DecodeContext &ctx) {
byte v = getBundleValue(kSourceColors);
byte *dest = ctx.dest;
for (int i = 0; i < 8; i++, dest += ctx.pitch)
memset(dest, v, 8);
}
void BinkDecoder::BinkVideoTrack::blockInter(DecodeContext &ctx) {
blockMotion(ctx);
int32 block[64];
memset(block, 0, 64 * sizeof(int32));
block[0] = getBundleValue(kSourceInterDC);
readDCTCoeffs(*ctx.video, block, false);
IDCTAdd(ctx, block);
}
void BinkDecoder::BinkVideoTrack::blockPattern(DecodeContext &ctx) {
byte col[2];
for (int i = 0; i < 2; i++)
col[i] = getBundleValue(kSourceColors);
byte *dest = ctx.dest;
for (int i = 0; i < 8; i++, dest += ctx.pitch - 8) {
byte v = getBundleValue(kSourcePattern);
for (int j = 0; j < 8; j++, v >>= 1)
*dest++ = col[v & 1];
}
}
void BinkDecoder::BinkVideoTrack::blockRaw(DecodeContext &ctx) {
byte *dest = ctx.dest;
byte *data = _bundles[kSourceColors].curPtr;
for (int i = 0; i < 8; i++, dest += ctx.pitch, data += 8)
memcpy(dest, data, 8);
_bundles[kSourceColors].curPtr += 64;
}
void BinkDecoder::BinkVideoTrack::readRuns(VideoFrame &video, Bundle &bundle) {
uint32 n = readBundleCount(video, bundle);
if (n == 0)
return;
byte *decEnd = bundle.curDec + n;
if (decEnd > bundle.dataEnd)
error("Run value went out of bounds");
if (video.bits->getBit()) {
byte v = video.bits->getBits(4);
memset(bundle.curDec, v, n);
bundle.curDec += n;
} else
while (bundle.curDec < decEnd)
*bundle.curDec++ = getHuffmanSymbol(video, bundle.huffman);
}
void BinkDecoder::BinkVideoTrack::readMotionValues(VideoFrame &video, Bundle &bundle) {
uint32 n = readBundleCount(video, bundle);
if (n == 0)
return;
byte *decEnd = bundle.curDec + n;
if (decEnd > bundle.dataEnd)
error("Too many motion values");
if (video.bits->getBit()) {
byte v = video.bits->getBits(4);
if (v) {
int sign = -(int)video.bits->getBit();
v = (v ^ sign) - sign;
}
memset(bundle.curDec, v, n);
bundle.curDec += n;
return;
}
do {
byte v = getHuffmanSymbol(video, bundle.huffman);
if (v) {
int sign = -(int)video.bits->getBit();
v = (v ^ sign) - sign;
}
*bundle.curDec++ = v;
} while (bundle.curDec < decEnd);
}
const uint8 rleLens[4] = { 4, 8, 12, 32 };
void BinkDecoder::BinkVideoTrack::readBlockTypes(VideoFrame &video, Bundle &bundle) {
uint32 n = readBundleCount(video, bundle);
if (n == 0)
return;
byte *decEnd = bundle.curDec + n;
if (decEnd > bundle.dataEnd)
error("Too many block type values");
if (video.bits->getBit()) {
byte v = video.bits->getBits(4);
memset(bundle.curDec, v, n);
bundle.curDec += n;
return;
}
byte last = 0;
do {
byte v = getHuffmanSymbol(video, bundle.huffman);
if (v < 12) {
last = v;
*bundle.curDec++ = v;
} else {
int run = rleLens[v - 12];
memset(bundle.curDec, last, run);
bundle.curDec += run;
}
} while (bundle.curDec < decEnd);
}
void BinkDecoder::BinkVideoTrack::readPatterns(VideoFrame &video, Bundle &bundle) {
uint32 n = readBundleCount(video, bundle);
if (n == 0)
return;
byte *decEnd = bundle.curDec + n;
if (decEnd > bundle.dataEnd)
error("Too many pattern values");
byte v;
while (bundle.curDec < decEnd) {
v = getHuffmanSymbol(video, bundle.huffman);
v |= getHuffmanSymbol(video, bundle.huffman) << 4;
*bundle.curDec++ = v;
}
}
void BinkDecoder::BinkVideoTrack::readColors(VideoFrame &video, Bundle &bundle) {
uint32 n = readBundleCount(video, bundle);
if (n == 0)
return;
byte *decEnd = bundle.curDec + n;
if (decEnd > bundle.dataEnd)