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Diffstat (limited to 'graphics/video/qt_decoder.cpp')
| -rw-r--r-- | graphics/video/qt_decoder.cpp | 1488 |
1 files changed, 0 insertions, 1488 deletions
diff --git a/graphics/video/qt_decoder.cpp b/graphics/video/qt_decoder.cpp deleted file mode 100644 index 9329966652..0000000000 --- a/graphics/video/qt_decoder.cpp +++ /dev/null @@ -1,1488 +0,0 @@ -/* 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. - * - * $URL$ - * $Id$ - * - */ - -// -// Heavily based on ffmpeg code. -// -// Copyright (c) 2001 Fabrice Bellard. -// First version by Francois Revol revol@free.fr -// Seek function by Gael Chardon gael.dev@4now.net -// - -#include "graphics/video/qt_decoder.h" - -#include "common/debug.h" -#include "common/endian.h" -#include "common/macresman.h" -#include "common/memstream.h" -#include "common/util.h" -#include "common/zlib.h" - -// Audio codecs -#include "sound/decoders/adpcm.h" -#include "sound/decoders/raw.h" -#include "graphics/video/codecs/qdm2.h" - -// Video codecs -#include "graphics/video/codecs/cinepak.h" -#include "graphics/video/codecs/mjpeg.h" -#include "graphics/video/codecs/qtrle.h" -#include "graphics/video/codecs/rpza.h" -#include "graphics/video/codecs/smc.h" -#include "graphics/video/codecs/cdtoons.h" - -namespace Graphics { - -//////////////////////////////////////////// -// QuickTimeDecoder -//////////////////////////////////////////// - -QuickTimeDecoder::QuickTimeDecoder() : VideoDecoder() { - _audStream = NULL; - _beginOffset = 0; - _curFrame = -1; - _startTime = _nextFrameStartTime = 0; - _audHandle = Audio::SoundHandle(); - _numStreams = 0; - _fd = 0; - _scaledSurface = 0; - _scaleFactorX = 1; - _scaleFactorY = 1; - _dirtyPalette = false; - _resFork = new Common::MacResManager(); - _palette = 0; - - initParseTable(); -} - -QuickTimeDecoder::~QuickTimeDecoder() { - close(); - delete _resFork; -} - -uint16 QuickTimeDecoder::getWidth() const { - if (_videoStreamIndex < 0) - return 0; - - return (Common::Rational(_streams[_videoStreamIndex]->width) / getScaleFactorX()).toInt(); -} - -uint16 QuickTimeDecoder::getHeight() const { - if (_videoStreamIndex < 0) - return 0; - - return (Common::Rational(_streams[_videoStreamIndex]->height) / getScaleFactorY()).toInt(); -} - -uint32 QuickTimeDecoder::getFrameCount() const { - if (_videoStreamIndex < 0) - return 0; - - return _streams[_videoStreamIndex]->nb_frames; -} - -Common::Rational QuickTimeDecoder::getScaleFactorX() const { - if (_videoStreamIndex < 0) - return 1; - - return (_scaleFactorX * _streams[_videoStreamIndex]->scaleFactorX); -} - -Common::Rational QuickTimeDecoder::getScaleFactorY() const { - if (_videoStreamIndex < 0) - return 1; - - return (_scaleFactorY * _streams[_videoStreamIndex]->scaleFactorY); -} - -uint32 QuickTimeDecoder::getFrameDuration() { - if (_videoStreamIndex < 0) - return 0; - - uint32 curFrameIndex = 0; - for (int32 i = 0; i < _streams[_videoStreamIndex]->stts_count; i++) { - curFrameIndex += _streams[_videoStreamIndex]->stts_data[i].count; - if ((uint32)_curFrame < curFrameIndex) { - // Ok, now we have what duration this frame has. - return _streams[_videoStreamIndex]->stts_data[i].duration; - } - } - - // This should never occur - error ("Cannot find duration for frame %d", _curFrame); - return 0; -} - -PixelFormat QuickTimeDecoder::getPixelFormat() const { - Codec *codec = findDefaultVideoCodec(); - - if (!codec) - return PixelFormat::createFormatCLUT8(); - - return codec->getPixelFormat(); -} - -uint32 QuickTimeDecoder::findKeyFrame(uint32 frame) const { - for (int i = _streams[_videoStreamIndex]->keyframe_count - 1; i >= 0; i--) - if (_streams[_videoStreamIndex]->keyframes[i] <= frame) - return _streams[_videoStreamIndex]->keyframes[i]; - - // If none found, we'll assume the requested frame is a key frame - return frame; -} - -void QuickTimeDecoder::seekToFrame(uint32 frame) { - assert(_videoStreamIndex >= 0); - assert(frame < _streams[_videoStreamIndex]->nb_frames); - - // Stop all audio (for now) - stopAudio(); - - // Track down the keyframe - _curFrame = findKeyFrame(frame) - 1; - while (_curFrame < (int32)frame - 1) - decodeNextFrame(); - - // Map out the starting point - _nextFrameStartTime = 0; - uint32 curFrame = 0; - - for (int32 i = 0; i < _streams[_videoStreamIndex]->stts_count && curFrame < frame; i++) { - for (int32 j = 0; j < _streams[_videoStreamIndex]->stts_data[i].count && curFrame < frame; j++) { - curFrame++; - _nextFrameStartTime += _streams[_videoStreamIndex]->stts_data[i].duration; - } - } - - // Adjust the video starting point - _startTime = g_system->getMillis() - Graphics::VideoTimestamp(_nextFrameStartTime, _streams[_videoStreamIndex]->time_scale).getUnitsInScale(1000); - resetPauseStartTime(); - - // Adjust the audio starting point - if (_audioStreamIndex >= 0) { - _audioStartOffset = VideoTimestamp(_nextFrameStartTime, _streams[_videoStreamIndex]->time_scale); - - // Re-create the audio stream - STSDEntry *entry = &_streams[_audioStreamIndex]->stsdEntries[0]; - _audStream = Audio::makeQueuingAudioStream(entry->sampleRate, entry->channels == 2); - - // First, we need to track down what audio sample we need - uint32 curTime = 0; - uint sample = 0; - bool done = false; - for (int32 i = 0; i < _streams[_audioStreamIndex]->stts_count && !done; i++) { - for (int32 j = 0; j < _streams[_audioStreamIndex]->stts_data[i].count; j++) { - curTime += _streams[_audioStreamIndex]->stts_data[i].duration; - - if (curTime > Graphics::VideoTimestamp(_nextFrameStartTime, _streams[_videoStreamIndex]->time_scale).getUnitsInScale(_streams[_audioStreamIndex]->time_scale)) { - done = true; - break; - } - - sample++; - } - } - - // Now to track down what chunk it's in - _curAudioChunk = 0; - uint32 totalSamples = 0; - for (uint32 i = 0; i < _streams[_audioStreamIndex]->sample_to_chunk_sz; i++, _curAudioChunk++) { - int sampleToChunkIndex = -1; - - for (uint32 j = 0; j < _streams[_audioStreamIndex]->sample_to_chunk_sz; j++) - if (i >= _streams[_audioStreamIndex]->sample_to_chunk[j].first) - sampleToChunkIndex = j; - - assert(sampleToChunkIndex >= 0); - - totalSamples += _streams[_audioStreamIndex]->sample_to_chunk[sampleToChunkIndex].count; - - if (sample < totalSamples) { - totalSamples -= _streams[_audioStreamIndex]->sample_to_chunk[sampleToChunkIndex].count; - break; - } - } - - // Reposition the audio stream - readNextAudioChunk(); - if (sample != totalSamples) { - // HACK: Skip a certain amount of samples from the stream - // (There's got to be a better way to do this!) - int16 *tempBuffer = new int16[sample - totalSamples]; - _audStream->readBuffer(tempBuffer, sample - totalSamples); - delete[] tempBuffer; - debug(3, "Skipping %d audio samples", sample - totalSamples); - } - - // Restart the audio - startAudio(); - } -} - -void QuickTimeDecoder::seekToTime(VideoTimestamp time) { - // TODO: Audio-only seeking (or really, have QuickTime sounds) - if (_videoStreamIndex < 0) - error("Audio-only seeking not supported"); - - // Convert to the local time scale - uint32 localTime = time.getUnitsInScale(_streams[_videoStreamIndex]->time_scale); - - // Try to find the last frame that should have been decoded - uint32 frame = 0; - uint32 totalDuration = 0; - bool done = false; - - for (int32 i = 0; i < _streams[_videoStreamIndex]->stts_count && !done; i++) { - for (int32 j = 0; j < _streams[_videoStreamIndex]->stts_data[i].count; j++) { - totalDuration += _streams[_videoStreamIndex]->stts_data[i].duration; - if (localTime < totalDuration) { - done = true; - break; - } - frame++; - } - } - - seekToFrame(frame); -} - -Codec *QuickTimeDecoder::createCodec(uint32 codecTag, byte bitsPerPixel) { - if (codecTag == MKID_BE('cvid')) { - // Cinepak: As used by most Myst and all Riven videos as well as some Myst ME videos. "The Chief" videos also use this. - return new CinepakDecoder(bitsPerPixel); - } else if (codecTag == MKID_BE('rpza')) { - // Apple Video ("Road Pizza"): Used by some Myst videos. - return new RPZADecoder(getWidth(), getHeight()); - } else if (codecTag == MKID_BE('rle ')) { - // QuickTime RLE: Used by some Myst ME videos. - return new QTRLEDecoder(getWidth(), getHeight(), bitsPerPixel); - } else if (codecTag == MKID_BE('smc ')) { - // Apple SMC: Used by some Myst videos. - return new SMCDecoder(getWidth(), getHeight()); - } else if (codecTag == MKID_BE('SVQ1')) { - // Sorenson Video 1: Used by some Myst ME videos. - warning("Sorenson Video 1 not yet supported"); - } else if (codecTag == MKID_BE('SVQ3')) { - // Sorenson Video 3: Used by some Myst ME videos. - warning("Sorenson Video 3 not yet supported"); - } else if (codecTag == MKID_BE('jpeg')) { - // Motion JPEG: Used by some Myst ME 10th Anniversary videos. - return new JPEGDecoder(); - } else if (codecTag == MKID_BE('QkBk')) { - // CDToons: Used by most of the Broderbund games. - return new CDToonsDecoder(getWidth(), getHeight()); - } else { - warning("Unsupported codec \'%s\'", tag2str(codecTag)); - } - - return NULL; -} - -void QuickTimeDecoder::startAudio() { - if (_audStream) { // No audio/audio not supported - updateAudioBuffer(); - g_system->getMixer()->playStream(Audio::Mixer::kPlainSoundType, &_audHandle, _audStream); - } -} - -void QuickTimeDecoder::stopAudio() { - if (_audStream) { - g_system->getMixer()->stopHandle(_audHandle); - _audStream = NULL; // the mixer automatically frees the stream - } -} - -void QuickTimeDecoder::pauseVideoIntern(bool pause) { - if (_audStream) - g_system->getMixer()->pauseHandle(_audHandle, pause); -} - -Codec *QuickTimeDecoder::findDefaultVideoCodec() const { - if (_videoStreamIndex < 0 || !_streams[_videoStreamIndex]->stsdEntryCount) - return 0; - - return _streams[_videoStreamIndex]->stsdEntries[0].videoCodec; -} - -const Surface *QuickTimeDecoder::decodeNextFrame() { - if (_videoStreamIndex < 0 || _curFrame >= (int32)getFrameCount() - 1) - return 0; - - if (_startTime == 0) - _startTime = g_system->getMillis(); - - _curFrame++; - _nextFrameStartTime += getFrameDuration(); - - // Update the audio while we're at it - updateAudioBuffer(); - - // Get the next packet - uint32 descId; - Common::SeekableReadStream *frameData = getNextFramePacket(descId); - - if (!frameData || !descId || descId > _streams[_videoStreamIndex]->stsdEntryCount) - return 0; - - // Find which video description entry we want - STSDEntry *entry = &_streams[_videoStreamIndex]->stsdEntries[descId - 1]; - - if (!entry->videoCodec) - return 0; - - const Surface *frame = entry->videoCodec->decodeImage(frameData); - delete frameData; - - // Update the palette - if (entry->videoCodec->containsPalette()) { - // The codec itself contains a palette - if (entry->videoCodec->hasDirtyPalette()) { - _palette = entry->videoCodec->getPalette(); - _dirtyPalette = true; - } - } else { - // Check if the video description has been updated - byte *palette = entry->palette; - - if (palette != _palette) { - _palette = palette; - _dirtyPalette = true; - } - } - - return scaleSurface(frame); -} - -const Surface *QuickTimeDecoder::scaleSurface(const Surface *frame) { - if (getScaleFactorX() == 1 && getScaleFactorY() == 1) - return frame; - - assert(_scaledSurface); - - for (int32 j = 0; j < _scaledSurface->h; j++) - for (int32 k = 0; k < _scaledSurface->w; k++) - memcpy(_scaledSurface->getBasePtr(k, j), frame->getBasePtr((k * getScaleFactorX()).toInt() , (j * getScaleFactorY()).toInt()), frame->bytesPerPixel); - - return _scaledSurface; -} - -bool QuickTimeDecoder::endOfVideo() const { - return (!_audStream || _audStream->endOfData()) && (!findDefaultVideoCodec() || VideoDecoder::endOfVideo()); -} - -uint32 QuickTimeDecoder::getElapsedTime() const { - if (_audStream) - return g_system->getMixer()->getSoundElapsedTime(_audHandle) + _audioStartOffset.getUnitsInScale(1000); - - return VideoDecoder::getElapsedTime(); -} - -uint32 QuickTimeDecoder::getTimeToNextFrame() const { - if (endOfVideo() || _curFrame < 0) - return 0; - - // Convert from the QuickTime rate base to 1000 - uint32 nextFrameStartTime = _nextFrameStartTime * 1000 / _streams[_videoStreamIndex]->time_scale; - uint32 elapsedTime = getElapsedTime(); - - if (nextFrameStartTime <= elapsedTime) - return 0; - - return nextFrameStartTime - elapsedTime; -} - -bool QuickTimeDecoder::loadFile(const Common::String &filename) { - if (!_resFork->open(filename) || !_resFork->hasDataFork()) - return false; - - _foundMOOV = false; - _numStreams = 0; - _videoStreamIndex = _audioStreamIndex = -1; - _startTime = 0; - - MOVatom atom = { 0, 0, 0xffffffff }; - - if (_resFork->hasResFork()) { - // Search for a 'moov' resource - Common::MacResIDArray idArray = _resFork->getResIDArray(MKID_BE('moov')); - - if (!idArray.empty()) - _fd = _resFork->getResource(MKID_BE('moov'), idArray[0]); - - if (_fd) { - atom.size = _fd->size(); - if (readDefault(atom) < 0 || !_foundMOOV) - return false; - } - delete _fd; - - atom.type = 0; - atom.offset = 0; - atom.size = 0xffffffff; - } - - _fd = _resFork->getDataFork(); - - if (readDefault(atom) < 0 || !_foundMOOV) - return false; - - init(); - return true; -} - -bool QuickTimeDecoder::load(Common::SeekableReadStream *stream) { - _fd = stream; - _foundMOOV = false; - _numStreams = 0; - _videoStreamIndex = _audioStreamIndex = -1; - _startTime = 0; - - MOVatom atom = { 0, 0, 0xffffffff }; - - if (readDefault(atom) < 0 || !_foundMOOV) { - _fd = 0; - return false; - } - - init(); - return true; -} - -void QuickTimeDecoder::init() { - // Remove non-Video/Audio streams - for (uint32 i = 0; i < _numStreams;) { - if (_streams[i]->codec_type == CODEC_TYPE_MOV_OTHER) { - delete _streams[i]; - for (uint32 j = i + 1; j < _numStreams; j++) - _streams[j - 1] = _streams[j]; - _numStreams--; - } else - i++; - } - - // Adjust time/duration - for (uint32 i = 0; i < _numStreams; i++) { - MOVStreamContext *sc = _streams[i]; - - if (!sc->time_rate) - sc->time_rate = 1; - - if (!sc->time_scale) - sc->time_scale = _timeScale; - - sc->duration /= sc->time_rate; - - if (sc->codec_type == CODEC_TYPE_VIDEO && _videoStreamIndex < 0) - _videoStreamIndex = i; - else if (sc->codec_type == CODEC_TYPE_AUDIO && _audioStreamIndex < 0) - _audioStreamIndex = i; - } - - // Initialize audio, if present - if (_audioStreamIndex >= 0) { - STSDEntry *entry = &_streams[_audioStreamIndex]->stsdEntries[0]; - - if (checkAudioCodecSupport(entry->codecTag)) { - _audStream = Audio::makeQueuingAudioStream(entry->sampleRate, entry->channels == 2); - _curAudioChunk = 0; - - // Make sure the bits per sample transfers to the sample size - if (entry->codecTag == MKID_BE('raw ') || entry->codecTag == MKID_BE('twos')) - _streams[_audioStreamIndex]->sample_size = (entry->bitsPerSample / 8) * entry->channels; - - startAudio(); - } - - _audioStartOffset = VideoTimestamp(0); - } - - // Initialize video, if present - if (_videoStreamIndex >= 0) { - for (uint32 i = 0; i < _streams[_videoStreamIndex]->stsdEntryCount; i++) { - STSDEntry *entry = &_streams[_videoStreamIndex]->stsdEntries[i]; - entry->videoCodec = createCodec(entry->codecTag, entry->bitsPerSample & 0x1F); - } - - if (getScaleFactorX() != 1 || getScaleFactorY() != 1) { - // We have to initialize the scaled surface - _scaledSurface = new Surface(); - _scaledSurface->create(getWidth(), getHeight(), getPixelFormat().bytesPerPixel); - } - } -} - -void QuickTimeDecoder::initParseTable() { - static const ParseTable p[] = { - { &QuickTimeDecoder::readDefault, MKID_BE('dinf') }, - { &QuickTimeDecoder::readLeaf, MKID_BE('dref') }, - { &QuickTimeDecoder::readDefault, MKID_BE('edts') }, - { &QuickTimeDecoder::readELST, MKID_BE('elst') }, - { &QuickTimeDecoder::readHDLR, MKID_BE('hdlr') }, - { &QuickTimeDecoder::readDefault, MKID_BE('mdat') }, - { &QuickTimeDecoder::readMDHD, MKID_BE('mdhd') }, - { &QuickTimeDecoder::readDefault, MKID_BE('mdia') }, - { &QuickTimeDecoder::readDefault, MKID_BE('minf') }, - { &QuickTimeDecoder::readMOOV, MKID_BE('moov') }, - { &QuickTimeDecoder::readMVHD, MKID_BE('mvhd') }, - { &QuickTimeDecoder::readLeaf, MKID_BE('smhd') }, - { &QuickTimeDecoder::readDefault, MKID_BE('stbl') }, - { &QuickTimeDecoder::readSTCO, MKID_BE('stco') }, - { &QuickTimeDecoder::readSTSC, MKID_BE('stsc') }, - { &QuickTimeDecoder::readSTSD, MKID_BE('stsd') }, - { &QuickTimeDecoder::readSTSS, MKID_BE('stss') }, - { &QuickTimeDecoder::readSTSZ, MKID_BE('stsz') }, - { &QuickTimeDecoder::readSTTS, MKID_BE('stts') }, - { &QuickTimeDecoder::readTKHD, MKID_BE('tkhd') }, - { &QuickTimeDecoder::readTRAK, MKID_BE('trak') }, - { &QuickTimeDecoder::readLeaf, MKID_BE('udta') }, - { &QuickTimeDecoder::readLeaf, MKID_BE('vmhd') }, - { &QuickTimeDecoder::readCMOV, MKID_BE('cmov') }, - { &QuickTimeDecoder::readWAVE, MKID_BE('wave') }, - { 0, 0 } - }; - - _parseTable = p; -} - -int QuickTimeDecoder::readDefault(MOVatom atom) { - uint32 total_size = 0; - MOVatom a; - int err = 0; - - a.offset = atom.offset; - - while(((total_size + 8) < atom.size) && !_fd->eos() && _fd->pos() < _fd->size() && !err) { - a.size = atom.size; - a.type = 0; - - if (atom.size >= 8) { - a.size = _fd->readUint32BE(); - a.type = _fd->readUint32BE(); - - // Some QuickTime videos with resource forks have mdat chunks - // that are of size 0. Adjust it so it's the correct size. - if (a.type == MKID_BE('mdat') && a.size == 0) - a.size = _fd->size(); - } - - total_size += 8; - a.offset += 8; - debug(4, "type: %08x %.4s sz: %x %x %x", a.type, tag2str(a.type), a.size, atom.size, total_size); - - if (a.size == 1) { // 64 bit extended size - warning("64 bit extended size is not supported in QuickTime"); - return -1; - } - - if (a.size == 0) { - a.size = atom.size - total_size; - if (a.size <= 8) - break; - } - - uint32 i = 0; - - for (; _parseTable[i].type != 0 && _parseTable[i].type != a.type; i++) - // empty; - - if (a.size < 8) - break; - - a.size -= 8; - - if (_parseTable[i].type == 0) { // skip leaf atoms data - debug(0, ">>> Skipped [%s]", tag2str(a.type)); - - _fd->seek(a.size, SEEK_CUR); - } else { - uint32 start_pos = _fd->pos(); - err = (this->*_parseTable[i].func)(a); - - uint32 left = a.size - _fd->pos() + start_pos; - - if (left > 0) // skip garbage at atom end - _fd->seek(left, SEEK_CUR); - } - - a.offset += a.size; - total_size += a.size; - } - - if (!err && total_size < atom.size) - _fd->seek(atom.size - total_size, SEEK_SET); - - return err; -} - -int QuickTimeDecoder::readLeaf(MOVatom atom) { - if (atom.size > 1) - _fd->seek(atom.size, SEEK_SET); - - return 0; -} - -int QuickTimeDecoder::readMOOV(MOVatom atom) { - if (readDefault(atom) < 0) - return -1; - - // We parsed the 'moov' atom, so we don't need anything else - _foundMOOV = true; - return 1; -} - -int QuickTimeDecoder::readCMOV(MOVatom atom) { -#ifdef USE_ZLIB - // Read in the dcom atom - _fd->readUint32BE(); - if (_fd->readUint32BE() != MKID_BE('dcom')) - return -1; - if (_fd->readUint32BE() != MKID_BE('zlib')) { - warning("Unknown cmov compression type"); - return -1; - } - - // Read in the cmvd atom - uint32 compressedSize = _fd->readUint32BE() - 12; - if (_fd->readUint32BE() != MKID_BE('cmvd')) - return -1; - uint32 uncompressedSize = _fd->readUint32BE(); - - // Read in data - byte *compressedData = (byte *)malloc(compressedSize); - _fd->read(compressedData, compressedSize); - - // Create uncompressed stream - byte *uncompressedData = (byte *)malloc(uncompressedSize); - - // Uncompress the data - unsigned long dstLen = uncompressedSize; - if (!Common::uncompress(uncompressedData, &dstLen, compressedData, compressedSize)) { - warning ("Could not uncompress cmov chunk"); - free(compressedData); - free(uncompressedData); - return -1; - } - - // Load data into a new MemoryReadStream and assign _fd to be that - Common::SeekableReadStream *oldStream = _fd; - _fd = new Common::MemoryReadStream(uncompressedData, uncompressedSize, DisposeAfterUse::YES); - - // Read the contents of the uncompressed data - MOVatom a = { MKID_BE('moov'), 0, uncompressedSize }; - int err = readDefault(a); - - // Assign the file handle back to the original handle - free(compressedData); - delete _fd; - _fd = oldStream; - - return err; -#else - warning ("zlib not found, cannot read QuickTime cmov atom"); - return -1; -#endif -} - -int QuickTimeDecoder::readMVHD(MOVatom atom) { - byte version = _fd->readByte(); // version - _fd->readByte(); _fd->readByte(); _fd->readByte(); // flags - - if (version == 1) { - warning("QuickTime version 1"); - _fd->readUint32BE(); _fd->readUint32BE(); - _fd->readUint32BE(); _fd->readUint32BE(); - } else { - _fd->readUint32BE(); // creation time - _fd->readUint32BE(); // modification time - } - - _timeScale = _fd->readUint32BE(); // time scale - debug(0, "time scale = %i\n", _timeScale); - - // duration - _duration = (version == 1) ? (_fd->readUint32BE(), _fd->readUint32BE()) : _fd->readUint32BE(); - _fd->readUint32BE(); // preferred scale - - _fd->readUint16BE(); // preferred volume - - _fd->seek(10, SEEK_CUR); // reserved - - // We only need two values from the movie display matrix. Most of the values are just - // skipped. xMod and yMod are 16:16 fixed point numbers, the last part of the 3x3 matrix - // is 2:30. - uint32 xMod = _fd->readUint32BE(); - _fd->skip(12); - uint32 yMod = _fd->readUint32BE(); - _fd->skip(16); - - _scaleFactorX = Common::Rational(0x10000, xMod); - _scaleFactorY = Common::Rational(0x10000, yMod); - - _scaleFactorX.debugPrint(1, "readMVHD(): scaleFactorX ="); - _scaleFactorY.debugPrint(1, "readMVHD(): scaleFactorY ="); - - _fd->readUint32BE(); // preview time - _fd->readUint32BE(); // preview duration - _fd->readUint32BE(); // poster time - _fd->readUint32BE(); // selection time - _fd->readUint32BE(); // selection duration - _fd->readUint32BE(); // current time - _fd->readUint32BE(); // next track ID - - return 0; -} - -int QuickTimeDecoder::readTRAK(MOVatom atom) { - MOVStreamContext *sc = new MOVStreamContext(); - - if (!sc) - return -1; - - sc->codec_type = CODEC_TYPE_MOV_OTHER; - sc->start_time = 0; // XXX: check - _streams[_numStreams++] = sc; - - return readDefault(atom); -} - -int QuickTimeDecoder::readTKHD(MOVatom atom) { - MOVStreamContext *st = _streams[_numStreams - 1]; - byte version = _fd->readByte(); - - _fd->readByte(); _fd->readByte(); - _fd->readByte(); // flags - // - //MOV_TRACK_ENABLED 0x0001 - //MOV_TRACK_IN_MOVIE 0x0002 - //MOV_TRACK_IN_PREVIEW 0x0004 - //MOV_TRACK_IN_POSTER 0x0008 - // - - if (version == 1) { - _fd->readUint32BE(); _fd->readUint32BE(); - _fd->readUint32BE(); _fd->readUint32BE(); - } else { - _fd->readUint32BE(); // creation time - _fd->readUint32BE(); // modification time - } - - /* st->id = */_fd->readUint32BE(); // track id (NOT 0 !) - _fd->readUint32BE(); // reserved - //st->start_time = 0; // check - (version == 1) ? (_fd->readUint32BE(), _fd->readUint32BE()) : _fd->readUint32BE(); // highlevel (considering edits) duration in movie timebase - _fd->readUint32BE(); // reserved - _fd->readUint32BE(); // reserved - - _fd->readUint16BE(); // layer - _fd->readUint16BE(); // alternate group - _fd->readUint16BE(); // volume - _fd->readUint16BE(); // reserved - - // We only need the two values from the displacement matrix for a track. - // See readMVHD() for more information. - uint32 xMod = _fd->readUint32BE(); - _fd->skip(12); - uint32 yMod = _fd->readUint32BE(); - _fd->skip(16); - - st->scaleFactorX = Common::Rational(0x10000, xMod); - st->scaleFactorY = Common::Rational(0x10000, yMod); - - st->scaleFactorX.debugPrint(1, "readTKHD(): scaleFactorX ="); - st->scaleFactorY.debugPrint(1, "readTKHD(): scaleFactorY ="); - - // these are fixed-point, 16:16 - // uint32 tkWidth = _fd->readUint32BE() >> 16; // track width - // uint32 tkHeight = _fd->readUint32BE() >> 16; // track height - - return 0; -} - -// edit list atom -int QuickTimeDecoder::readELST(MOVatom atom) { - _fd->readByte(); // version - _fd->readByte(); _fd->readByte(); _fd->readByte(); // flags - uint32 editCount = _streams[_numStreams - 1]->edit_count = _fd->readUint32BE(); // entries - - for (uint32 i = 0; i < editCount; i++){ - _fd->readUint32BE(); // Track duration - _fd->readUint32BE(); // Media time - _fd->readUint32BE(); // Media rate - } - - debug(0, "track[%i].edit_count = %i", _numStreams - 1, _streams[_numStreams - 1]->edit_count); - - if (editCount != 1) - warning("Multiple edit list entries. Things may go awry"); - - return 0; -} - -int QuickTimeDecoder::readHDLR(MOVatom atom) { - MOVStreamContext *st = _streams[_numStreams - 1]; - - _fd->readByte(); // version - _fd->readByte(); _fd->readByte(); _fd->readByte(); // flags - - // component type - uint32 ctype = _fd->readUint32LE(); - uint32 type = _fd->readUint32BE(); // component subtype - - debug(0, "ctype= %s (0x%08lx)", tag2str(ctype), (long)ctype); - debug(0, "stype= %s", tag2str(type)); - - if(ctype == MKID_BE('mhlr')) // MOV - debug(0, "MOV detected"); - else if(ctype == 0) { - warning("MP4 streams are not supported"); - return -1; - } - - if (type == MKID_BE('vide')) - st->codec_type = CODEC_TYPE_VIDEO; - else if (type == MKID_BE('soun')) - st->codec_type = CODEC_TYPE_AUDIO; - - _fd->readUint32BE(); // component manufacture - _fd->readUint32BE(); // component flags - _fd->readUint32BE(); // component flags mask - - if (atom.size <= 24) - return 0; // nothing left to read - - // .mov: PASCAL string - byte len = _fd->readByte(); - _fd->seek(len, SEEK_CUR); - - _fd->seek(atom.size - (_fd->pos() - atom.offset), SEEK_CUR); - - return 0; -} - -int QuickTimeDecoder::readMDHD(MOVatom atom) { - MOVStreamContext *st = _streams[_numStreams - 1]; - byte version = _fd->readByte(); - - if (version > 1) - return 1; // unsupported - - _fd->readByte(); _fd->readByte(); - _fd->readByte(); // flags - - if (version == 1) { - _fd->readUint32BE(); _fd->readUint32BE(); - _fd->readUint32BE(); _fd->readUint32BE(); - } else { - _fd->readUint32BE(); // creation time - _fd->readUint32BE(); // modification time - } - - st->time_scale = _fd->readUint32BE(); - st->duration = (version == 1) ? (_fd->readUint32BE(), _fd->readUint32BE()) : _fd->readUint32BE(); // duration - - _fd->readUint16BE(); // language - _fd->readUint16BE(); // quality - - return 0; -} - -int QuickTimeDecoder::readSTSD(MOVatom atom) { - MOVStreamContext *st = _streams[_numStreams - 1]; - - _fd->readByte(); // version - _fd->readByte(); _fd->readByte(); _fd->readByte(); // flags - - st->stsdEntryCount = _fd->readUint32BE(); - st->stsdEntries = new STSDEntry[st->stsdEntryCount]; - - for (uint32 i = 0; i < st->stsdEntryCount; i++) { // Parsing Sample description table - STSDEntry *entry = &st->stsdEntries[i]; - - MOVatom a = { 0, 0, 0 }; - uint32 start_pos = _fd->pos(); - int size = _fd->readUint32BE(); // size - uint32 format = _fd->readUint32BE(); // data format - - _fd->readUint32BE(); // reserved - _fd->readUint16BE(); // reserved - _fd->readUint16BE(); // index - - debug(0, "size=%d 4CC= %s codec_type=%d", size, tag2str(format), st->codec_type); - - entry->codecTag = format; - - if (st->codec_type == CODEC_TYPE_VIDEO) { - debug(0, "Video Codec FourCC: \'%s\'", tag2str(format)); - - _fd->readUint16BE(); // version - _fd->readUint16BE(); // revision level - _fd->readUint32BE(); // vendor - _fd->readUint32BE(); // temporal quality - _fd->readUint32BE(); // spacial quality - - uint16 width = _fd->readUint16BE(); // width - uint16 height = _fd->readUint16BE(); // height - - // The width is most likely invalid for entries after the first one - // so only set the overall width if it is not zero here. - if (width) - st->width = width; - - if (height) - st->height = height; - - _fd->readUint32BE(); // horiz resolution - _fd->readUint32BE(); // vert resolution - _fd->readUint32BE(); // data size, always 0 - _fd->readUint16BE(); // frames per samples - - byte codec_name[32]; - _fd->read(codec_name, 32); // codec name, pascal string (FIXME: true for mp4?) - if (codec_name[0] <= 31) { - memcpy(entry->codecName, &codec_name[1], codec_name[0]); - entry->codecName[codec_name[0]] = 0; - } - - entry->bitsPerSample = _fd->readUint16BE(); // depth - entry->colorTableId = _fd->readUint16BE(); // colortable id - - // figure out the palette situation - byte colorDepth = entry->bitsPerSample & 0x1F; - bool colorGreyscale = (entry->bitsPerSample & 0x20) != 0; - - debug(0, "color depth: %d", colorDepth); - - // if the depth is 2, 4, or 8 bpp, file is palettized - if (colorDepth == 2 || colorDepth == 4 || colorDepth == 8) { - // Initialize the palette - entry->palette = new byte[256 * 3]; - memset(entry->palette, 0, 256 * 3); - - if (colorGreyscale) { - debug(0, "Greyscale palette"); - - // compute the greyscale palette - uint16 colorCount = 1 << colorDepth; - int16 colorIndex = 255; - byte colorDec = 256 / (colorCount - 1); - for (byte j = 0; j < colorCount; j++) { - entry->palette[j * 3] = entry->palette[j * 3 + 1] = entry->palette[j * 3 + 2] = colorIndex; - colorIndex -= colorDec; - if (colorIndex < 0) - colorIndex = 0; - } - } else if (entry->colorTableId & 0x08) { - // if flag bit 3 is set, use the default palette - //uint16 colorCount = 1 << colorDepth; - - warning("Predefined palette! %dbpp", colorDepth); - } else { - debug(0, "Palette from file"); - - // load the palette from the file - uint32 colorStart = _fd->readUint32BE(); - /* uint16 colorCount = */ _fd->readUint16BE(); - uint16 colorEnd = _fd->readUint16BE(); - for (uint32 j = colorStart; j <= colorEnd; j++) { - // each R, G, or B component is 16 bits; - // only use the top 8 bits; skip alpha bytes - // up front - _fd->readByte(); - _fd->readByte(); - entry->palette[j * 3] = _fd->readByte(); - _fd->readByte(); - entry->palette[j * 3 + 1] = _fd->readByte(); - _fd->readByte(); - entry->palette[j * 3 + 2] = _fd->readByte(); - _fd->readByte(); - } - } - } - } else if (st->codec_type == CODEC_TYPE_AUDIO) { - debug(0, "Audio Codec FourCC: \'%s\'", tag2str(format)); - - uint16 stsdVersion = _fd->readUint16BE(); - _fd->readUint16BE(); // revision level - _fd->readUint32BE(); // vendor - - entry->channels = _fd->readUint16BE(); // channel count - entry->bitsPerSample = _fd->readUint16BE(); // sample size - - _fd->readUint16BE(); // compression id = 0 - _fd->readUint16BE(); // packet size = 0 - - entry->sampleRate = (_fd->readUint32BE() >> 16); - - debug(0, "stsd version =%d", stsdVersion); - if (stsdVersion == 0) { - // Not used, except in special cases. See below. - entry->samplesPerFrame = entry->bytesPerFrame = 0; - } else if (stsdVersion == 1) { - // Read QT version 1 fields. In version 0 these dont exist. - entry->samplesPerFrame = _fd->readUint32BE(); - debug(0, "stsd samples_per_frame =%d",entry->samplesPerFrame); - _fd->readUint32BE(); // bytes per packet - entry->bytesPerFrame = _fd->readUint32BE(); - debug(0, "stsd bytes_per_frame =%d", entry->bytesPerFrame); - _fd->readUint32BE(); // bytes per sample - } else { - warning("Unsupported QuickTime STSD audio version %d", stsdVersion); - return 1; - } - - // Version 0 videos (such as the Riven ones) don't have this set, - // but we need it later on. Add it in here. - if (format == MKID_BE('ima4')) { - entry->samplesPerFrame = 64; - entry->bytesPerFrame = 34 * entry->channels; - } - - if (entry->sampleRate == 0 && st->time_scale > 1) - entry->sampleRate = st->time_scale; - } else { - // other codec type, just skip (rtp, mp4s, tmcd ...) - _fd->seek(size - (_fd->pos() - start_pos), SEEK_CUR); - } - - // this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) - a.size = size - (_fd->pos() - start_pos); - if (a.size > 8) - readDefault(a); - else if (a.size > 0) - _fd->seek(a.size, SEEK_CUR); - } - - return 0; -} - -int QuickTimeDecoder::readSTSC(MOVatom atom) { - MOVStreamContext *st = _streams[_numStreams - 1]; - - _fd->readByte(); // version - _fd->readByte(); _fd->readByte(); _fd->readByte(); // flags - - st->sample_to_chunk_sz = _fd->readUint32BE(); - - debug(0, "track[%i].stsc.entries = %i", _numStreams - 1, st->sample_to_chunk_sz); - - st->sample_to_chunk = new MOVstsc[st->sample_to_chunk_sz]; - - if (!st->sample_to_chunk) - return -1; - - for (uint32 i = 0; i < st->sample_to_chunk_sz; i++) { - st->sample_to_chunk[i].first = _fd->readUint32BE() - 1; - st->sample_to_chunk[i].count = _fd->readUint32BE(); - st->sample_to_chunk[i].id = _fd->readUint32BE(); - //warning("Sample to Chunk[%d]: First = %d, Count = %d", i, st->sample_to_chunk[i].first, st->sample_to_chunk[i].count); - } - - return 0; -} - -int QuickTimeDecoder::readSTSS(MOVatom atom) { - MOVStreamContext *st = _streams[_numStreams - 1]; - - _fd->readByte(); // version - _fd->readByte(); _fd->readByte(); _fd->readByte(); // flags - - st->keyframe_count = _fd->readUint32BE(); - - debug(0, "keyframe_count = %d", st->keyframe_count); - - st->keyframes = new uint32[st->keyframe_count]; - - if (!st->keyframes) - return -1; - - for (uint32 i = 0; i < st->keyframe_count; i++) { - st->keyframes[i] = _fd->readUint32BE() - 1; // Adjust here, the frames are based on 1 - debug(6, "keyframes[%d] = %d", i, st->keyframes[i]); - - } - return 0; -} - -int QuickTimeDecoder::readSTSZ(MOVatom atom) { - MOVStreamContext *st = _streams[_numStreams - 1]; - - _fd->readByte(); // version - _fd->readByte(); _fd->readByte(); _fd->readByte(); // flags - - st->sample_size = _fd->readUint32BE(); - st->sample_count = _fd->readUint32BE(); - - debug(5, "sample_size = %d sample_count = %d", st->sample_size, st->sample_count); - - if (st->sample_size) - return 0; // there isn't any table following - - st->sample_sizes = new uint32[st->sample_count]; - - if (!st->sample_sizes) - return -1; - - for(uint32 i = 0; i < st->sample_count; i++) { - st->sample_sizes[i] = _fd->readUint32BE(); - debug(6, "sample_sizes[%d] = %d", i, st->sample_sizes[i]); - } - - return 0; -} - -static uint32 ff_gcd(uint32 a, uint32 b) { - return b ? ff_gcd(b, a % b) : a; -} - -int QuickTimeDecoder::readSTTS(MOVatom atom) { - MOVStreamContext *st = _streams[_numStreams - 1]; - uint32 duration = 0; - uint32 total_sample_count = 0; - - _fd->readByte(); // version - _fd->readByte(); _fd->readByte(); _fd->readByte(); // flags - - st->stts_count = _fd->readUint32BE(); - st->stts_data = new MOVstts[st->stts_count]; - - debug(0, "track[%i].stts.entries = %i", _numStreams - 1, st->stts_count); - - st->time_rate = 0; - - for (int32 i = 0; i < st->stts_count; i++) { - int sample_duration; - int sample_count; - - sample_count = _fd->readUint32BE(); - sample_duration = _fd->readUint32BE(); - st->stts_data[i].count = sample_count; - st->stts_data[i].duration = sample_duration; - - st->time_rate = ff_gcd(st->time_rate, sample_duration); - - debug(0, "sample_count=%d, sample_duration=%d", sample_count, sample_duration); - - duration += sample_duration * sample_count; - total_sample_count += sample_count; - } - - st->nb_frames = total_sample_count; - - if (duration) - st->duration = duration; - - return 0; -} - -int QuickTimeDecoder::readSTCO(MOVatom atom) { - MOVStreamContext *st = _streams[_numStreams - 1]; - - _fd->readByte(); // version - _fd->readByte(); _fd->readByte(); _fd->readByte(); // flags - - st->chunk_count = _fd->readUint32BE(); - st->chunk_offsets = new uint32[st->chunk_count]; - - if (!st->chunk_offsets) - return -1; - - for (uint32 i = 0; i < st->chunk_count; i++) { - // WORKAROUND/HACK: The offsets in Riven videos (ones inside the Mohawk archives themselves) - // have offsets relative to the archive and not the video. This is quite nasty. We subtract - // the initial offset of the stream to get the correct value inside of the stream. - st->chunk_offsets[i] = _fd->readUint32BE() - _beginOffset; - } - - return 0; -} - -int QuickTimeDecoder::readWAVE(MOVatom atom) { - if (_numStreams < 1) - return 0; - - MOVStreamContext *st = _streams[_numStreams - 1]; - - if (atom.size > (1 << 30)) - return -1; - - if (st->stsdEntries[0].codecTag == MKID_BE('QDM2')) // Read extradata for QDM2 - st->extradata = _fd->readStream(atom.size - 8); - else if (atom.size > 8) - return readDefault(atom); - else - _fd->skip(atom.size); - - return 0; -} - -void QuickTimeDecoder::close() { - stopAudio(); - - for (uint32 i = 0; i < _numStreams; i++) - delete _streams[i]; - - delete _fd; - _fd = 0; - - if (_scaledSurface) { - _scaledSurface->free(); - delete _scaledSurface; - _scaledSurface = 0; - } - - // The audio stream is deleted automatically - _audStream = NULL; - - VideoDecoder::reset(); -} - -Common::SeekableReadStream *QuickTimeDecoder::getNextFramePacket(uint32 &descId) { - if (_videoStreamIndex < 0) - return NULL; - - // First, we have to track down which chunk holds the sample and which sample in the chunk contains the frame we are looking for. - int32 totalSampleCount = 0; - int32 sampleInChunk = 0; - int32 actualChunk = -1; - - for (uint32 i = 0; i < _streams[_videoStreamIndex]->chunk_count; i++) { - int32 sampleToChunkIndex = -1; - - for (uint32 j = 0; j < _streams[_videoStreamIndex]->sample_to_chunk_sz; j++) - if (i >= _streams[_videoStreamIndex]->sample_to_chunk[j].first) - sampleToChunkIndex = j; - - if (sampleToChunkIndex < 0) - error("This chunk (%d) is imaginary", sampleToChunkIndex); - - totalSampleCount += _streams[_videoStreamIndex]->sample_to_chunk[sampleToChunkIndex].count; - - if (totalSampleCount > getCurFrame()) { - actualChunk = i; - descId = _streams[_videoStreamIndex]->sample_to_chunk[sampleToChunkIndex].id; - sampleInChunk = _streams[_videoStreamIndex]->sample_to_chunk[sampleToChunkIndex].count - totalSampleCount + getCurFrame(); - break; - } - } - - if (actualChunk < 0) { - warning ("Could not find data for frame %d", getCurFrame()); - return NULL; - } - - // Next seek to that frame - _fd->seek(_streams[_videoStreamIndex]->chunk_offsets[actualChunk]); - - // Then, if the chunk holds more than one frame, seek to where the frame we want is located - for (int32 i = getCurFrame() - sampleInChunk; i < getCurFrame(); i++) { - if (_streams[_videoStreamIndex]->sample_size != 0) - _fd->skip(_streams[_videoStreamIndex]->sample_size); - else - _fd->skip(_streams[_videoStreamIndex]->sample_sizes[i]); - } - - // Finally, read in the raw data for the frame - //printf ("Frame Data[%d]: Offset = %d, Size = %d\n", getCurFrame(), _fd->pos(), _streams[_videoStreamIndex]->sample_sizes[getCurFrame()]); - - if (_streams[_videoStreamIndex]->sample_size != 0) - return _fd->readStream(_streams[_videoStreamIndex]->sample_size); - - return _fd->readStream(_streams[_videoStreamIndex]->sample_sizes[getCurFrame()]); -} - -bool QuickTimeDecoder::checkAudioCodecSupport(uint32 tag) { - // Check if the codec is a supported codec - if (tag == MKID_BE('twos') || tag == MKID_BE('raw ') || tag == MKID_BE('ima4')) - return true; - -#ifdef GRAPHICS_QDM2_H - if (tag == MKID_BE('QDM2')) - return true; -#endif - - warning("Audio Codec Not Supported: \'%s\'", tag2str(tag)); - - return false; -} - -Audio::AudioStream *QuickTimeDecoder::createAudioStream(Common::SeekableReadStream *stream) { - if (!stream || _audioStreamIndex < 0) - return NULL; - - STSDEntry *entry = &_streams[_audioStreamIndex]->stsdEntries[0]; - - if (entry->codecTag == MKID_BE('twos') || entry->codecTag == MKID_BE('raw ')) { - // Fortunately, most of the audio used in Myst videos is raw... - uint16 flags = 0; - if (entry->codecTag == MKID_BE('raw ')) - flags |= Audio::FLAG_UNSIGNED; - if (entry->channels == 2) - flags |= Audio::FLAG_STEREO; - if (entry->bitsPerSample == 16) - flags |= Audio::FLAG_16BITS; - uint32 dataSize = stream->size(); - byte *data = (byte *)malloc(dataSize); - stream->read(data, dataSize); - delete stream; - return Audio::makeRawStream(data, dataSize, entry->sampleRate, flags); - } else if (entry->codecTag == MKID_BE('ima4')) { - // Riven uses this codec (as do some Myst ME videos) - return Audio::makeADPCMStream(stream, DisposeAfterUse::YES, stream->size(), Audio::kADPCMApple, entry->sampleRate, entry->channels, 34); -#ifdef GRAPHICS_QDM2_H - } else if (entry->codecTag == MKID_BE('QDM2')) { - // Several Myst ME videos use this codec - return makeQDM2Stream(stream, _streams[_audioStreamIndex]->extradata); -#endif - } - - error("Unsupported audio codec"); - - return NULL; -} - -uint32 QuickTimeDecoder::getAudioChunkSampleCount(uint chunk) { - if (_audioStreamIndex < 0) - return 0; - - uint32 sampleCount = 0; - - for (uint32 j = 0; j < _streams[_audioStreamIndex]->sample_to_chunk_sz; j++) - if (chunk >= _streams[_audioStreamIndex]->sample_to_chunk[j].first) - sampleCount = _streams[_audioStreamIndex]->sample_to_chunk[j].count; - - return sampleCount; -} - -void QuickTimeDecoder::readNextAudioChunk() { - STSDEntry *entry = &_streams[_audioStreamIndex]->stsdEntries[0]; - Common::MemoryWriteStreamDynamic *wStream = new Common::MemoryWriteStreamDynamic(); - - _fd->seek(_streams[_audioStreamIndex]->chunk_offsets[_curAudioChunk]); - - // First, we have to get the sample count - uint32 sampleCount = getAudioChunkSampleCount(_curAudioChunk); - assert(sampleCount); - - // Then calculate the right sizes - while (sampleCount > 0) { - uint32 samples = 0, size = 0; - - if (entry->samplesPerFrame >= 160) { - samples = entry->samplesPerFrame; - size = entry->bytesPerFrame; - } else if (entry->samplesPerFrame > 1) { - samples = MIN<uint32>((1024 / entry->samplesPerFrame) * entry->samplesPerFrame, sampleCount); - size = (samples / entry->samplesPerFrame) * entry->bytesPerFrame; - } else { - samples = MIN<uint32>(1024, sampleCount); - size = samples * _streams[_audioStreamIndex]->sample_size; - } - - // Now, we read in the data for this data and output it - byte *data = (byte *)malloc(size); - _fd->read(data, size); - wStream->write(data, size); - free(data); - sampleCount -= samples; - } - - // Now queue the buffer - _audStream->queueAudioStream(createAudioStream(new Common::MemoryReadStream(wStream->getData(), wStream->size(), DisposeAfterUse::YES))); - delete wStream; - - _curAudioChunk++; -} - -void QuickTimeDecoder::updateAudioBuffer() { - if (!_audStream) - return; - - uint32 numberOfChunksNeeded = 0; - - if (_curFrame == (int32)_streams[_videoStreamIndex]->nb_frames - 1) { - // If we're on the last frame, make sure all audio remaining is buffered - numberOfChunksNeeded = _streams[_audioStreamIndex]->chunk_count; - } else { - STSDEntry *entry = &_streams[_audioStreamIndex]->stsdEntries[0]; - - // Calculate the amount of chunks we need in memory until the next frame - uint32 timeToNextFrame = getTimeToNextFrame(); - uint32 timeFilled = 0; - uint32 curAudioChunk = _curAudioChunk - _audStream->numQueuedStreams(); - - for (; timeFilled < timeToNextFrame && curAudioChunk < _streams[_audioStreamIndex]->chunk_count; numberOfChunksNeeded++, curAudioChunk++) { - uint32 sampleCount = getAudioChunkSampleCount(curAudioChunk); - assert(sampleCount); - - timeFilled += sampleCount * 1000 / entry->sampleRate; - } - - // Add a couple extra to ensure we don't underrun - numberOfChunksNeeded += 3; - } - - // Keep three streams in buffer so that if/when the first two end, it goes right into the next - while (_audStream->numQueuedStreams() < numberOfChunksNeeded && _curAudioChunk < _streams[_audioStreamIndex]->chunk_count) - readNextAudioChunk(); -} - -QuickTimeDecoder::STSDEntry::STSDEntry() { - codecTag = 0; - bitsPerSample = 0; - memset(codecName, 0, 32); - colorTableId = 0; - palette = 0; - videoCodec = 0; - channels = 0; - sampleRate = 0; - samplesPerFrame = 0; - bytesPerFrame = 0; -} - -QuickTimeDecoder::STSDEntry::~STSDEntry() { - delete[] palette; - delete videoCodec; -} - -QuickTimeDecoder::MOVStreamContext::MOVStreamContext() { - // FIXME: Setting all members to 0 via memset is a hack -- it works - // because the only non-POD member of MOVStreamContext is of type - // Common::Rational, and that luckily has no virtual methods nor - // does it keep internal pointers or anything like that. But watch - // out if you ever extend MOVStreamContext! - memset(this, 0, sizeof(MOVStreamContext)); -} - -QuickTimeDecoder::MOVStreamContext::~MOVStreamContext() { - delete[] chunk_offsets; - delete[] stts_data; - delete[] sample_to_chunk; - delete[] sample_sizes; - delete[] keyframes; - delete[] stsdEntries; - delete extradata; -} - -} // End of namespace Graphics |