void AVIDecoder::handleList(uint32 listSize) {
uint32 listType = _fileStream->readUint32BE();
listSize -= 4; // Subtract away listType's 4 bytes
uint32 curPos = _fileStream->pos();
debug(0, "Found LIST of type %s", tag2str(listType));
switch (listType) {
case ID_MOVI: // Movie List
// We found the movie block
_foundMovieList = true;
_movieListStart = curPos;
_fileStream->skip(listSize);
return;
case ID_HDRL: // Header List
// Mark the header as decoded
_decodedHeader = true;
break;
case ID_INFO: // Metadata
case ID_PRMI: // Unknown metadata, should be safe to ignore
// Ignore metadata
_fileStream->skip(listSize);
return;
case ID_STRL: // Stream list
default: // (Just hope we can parse it!)
break;
}
while ((_fileStream->pos() - curPos) < listSize)
parseNextChunk();
}
bool AVIDecoder::loadStream(Common::SeekableReadStream *stream) {
close();
uint32 riffTag = stream->readUint32BE();
if (riffTag != ID_RIFF) {
warning("Failed to find RIFF header");
return false;
}
int32 fileSize = stream->readUint32LE();
uint32 riffType = stream->readUint32BE();
if (riffType != ID_AVI) {
warning("RIFF not an AVI file");
return false;
}
_fileStream = stream;
// Go through all chunks in the file
while (_fileStream->pos() < fileSize && parseNextChunk())
;
if (!_decodedHeader) {
warning("Failed to parse AVI header");
close();
return false;
}
if (!_foundMovieList) {
warning("Failed to find 'MOVI' list");
close();
return false;
}
// Create the status entries
uint32 index = 0;
for (TrackListIterator it = getTrackListBegin(); it != getTrackListEnd(); it++, index++) {
TrackStatus status;
status.track = *it;
status.index = index;
status.chunkSearchOffset = _movieListStart;
if ((*it)->getTrackType() == Track::kTrackTypeVideo)
_videoTracks.push_back(status);
else
_audioTracks.push_back(status);
}
if (_videoTracks.size() != 1) {
close();
return false;
}
// Check if this is a special Duck Truemotion video
checkTruemotion1();
return true;
}
bool AVIDecoder::loadStream(Common::SeekableReadStream *stream) {
close();
uint32 riffTag = stream->readUint32BE();
if (riffTag != ID_RIFF) {
warning("Failed to find RIFF header");
return false;
}
/* uint32 fileSize = */ stream->readUint32LE();
uint32 riffType = stream->readUint32BE();
if (riffType != ID_AVI) {
warning("RIFF not an AVI file");
return false;
}
_fileStream = stream;
// Go through all chunks in the file
while (parseNextChunk())
;
if (!_decodedHeader) {
warning("Failed to parse AVI header");
close();
return false;
}
if (!_foundMovieList) {
warning("Failed to find 'MOVI' list");
close();
return false;
}
// Seek back to the start of the MOVI list
_fileStream->seek(_movieListStart);
// Check if this is a special Duck Truemotion video
checkTruemotion1();
return true;
}
void AVIDecoder::handleList(uint32 listSize) {
uint32 listType = _fileStream->readUint32BE();
listSize -= 4; // Subtract away listType's 4 bytes
uint32 curPos = _fileStream->pos();
debug(0, "Found LIST of type %s", tag2str(listType));
if (listType == ID_MOVI) {
// If we found the movie block
_foundMovieList = true;
_movieListStart = curPos;
_fileStream->skip(listSize);
return;
} else if (listType == ID_HDRL) {
// Mark the header as decoded
_decodedHeader = true;
}
while ((_fileStream->pos() - curPos) < listSize)
parseNextChunk();
}
bool AVIDecoder::loadStream(Common::SeekableReadStream *stream) {
close();
uint32 riffTag = stream->readUint32BE();
if (riffTag != ID_RIFF) {
warning("Failed to find RIFF header");
return false;
}
int32 fileSize = stream->readUint32LE();
uint32 riffType = stream->readUint32BE();
if (riffType != ID_AVI) {
warning("RIFF not an AVI file");
return false;
}
_fileStream = stream;
// Go through all chunks in the file
while (_fileStream->pos() < fileSize && parseNextChunk())
;
if (!_decodedHeader) {
warning("Failed to parse AVI header");
close();
return false;
}
if (!_foundMovieList) {
warning("Failed to find 'MOVI' list");
close();
return false;
}
// Create the status entries
uint32 index = 0;
for (TrackListIterator it = getTrackListBegin(); it != getTrackListEnd(); it++, index++) {
TrackStatus status;
status.track = *it;
status.index = index;
status.chunkSearchOffset = _movieListStart;
if ((*it)->getTrackType() == Track::kTrackTypeAudio) {
_audioTracks.push_back(status);
} else if (_videoTracks.empty()) {
_videoTracks.push_back(status);
} else {
// Secondary video track. For now we assume it will always be a
// transparency information track
status.chunkSearchOffset = getVideoTrackOffset(index);
assert(!_transparencyTrack.track);
assert(status.chunkSearchOffset != 0);
// Copy the track status information into the transparency track field
_transparencyTrack = status;
}
}
// If there is a transparency track, remove it from the video decoder's track list.
// This is to stop it being included in calls like getFrameCount
if (_transparencyTrack.track)
eraseTrack(_transparencyTrack.track);
// Check if this is a special Duck Truemotion video
checkTruemotion1();
return true;
}
void MediaParserBase::parserLoop(){
_parserThreadStartBarrier.wait();
while(!parserThreadKillRequested()){
parseNextChunk();
}
}
