bool FliPlayer::decodeFrame() {
FrameTypeChunkHeader frameHeader;
ChunkHeader cHeader = readChunkHeader(fli_data_);
do {
switch (cHeader.type) {
case 4:
setPalette(fli_data_ + 6);
g_System.setPalette8b3(palette_);
break;
case 7:
decodeDeltaFLC(fli_data_ + 6);
break;
case 15:
decodeByteRun(fli_data_ + 6);
break;
case FRAME_TYPE:
frameHeader = readFrameTypeChunkHeader(cHeader, fli_data_);
fli_info_.numFrames--;
//printf("Frames Remaining: %d\n", fli_info_.numFrames);
break;
default:
break;
}
if (cHeader.type != FRAME_TYPE)
fli_data_ += cHeader.size;
cHeader = readChunkHeader(fli_data_);
} while (isValidChunk(cHeader.type) && cHeader.type != FRAME_TYPE);
return isValidChunk(cHeader.type);
}
void FlicDecoder::FlicVideoTrack::handleFrame() {
uint16 chunkCount = _fileStream->readUint16LE();
// Note: The overridden delay is a 16-bit integer (word), whereas the normal delay is a 32-bit integer (dword)
// the frame delay is the FLIC "speed", in milliseconds.
uint16 newFrameDelay = _fileStream->readUint16LE(); // "speed", in milliseconds
if (newFrameDelay > 0)
_frameDelay = newFrameDelay;
_fileStream->readUint16LE(); // reserved, always 0
uint16 newWidth = _fileStream->readUint16LE();
uint16 newHeight = _fileStream->readUint16LE();
if ((newWidth != 0) || (newHeight != 0)) {
if (newWidth == 0)
newWidth = _surface->w;
if (newHeight == 0)
newHeight = _surface->h;
_surface->free();
delete _surface;
_surface = new Graphics::Surface();
_surface->create(newWidth, newHeight, Graphics::PixelFormat::createFormatCLUT8());
}
// Read subchunks
for (uint32 i = 0; i < chunkCount; ++i) {
uint32 frameSize = _fileStream->readUint32LE();
uint16 frameType = _fileStream->readUint16LE();
uint8 *data = new uint8[frameSize - 6];
_fileStream->read(data, frameSize - 6);
switch (frameType) {
case FLI_SETPAL:
unpackPalette(data);
_dirtyPalette = true;
break;
case FLI_SS2:
decodeDeltaFLC(data);
break;
case FLI_BRUN:
decodeByteRun(data);
break;
case FLI_COPY:
copyFrame(data);
break;
case PSTAMP:
/* PSTAMP - skip for now */
break;
default:
error("FlicDecoder::decodeNextFrame(): unknown subchunk type (type = 0x%02X)", frameType);
break;
}
delete[] data;
}
}
const Graphics::Surface *FlicDecoder::FlicVideoTrack::decodeNextFrame() {
// Read chunk
uint32 frameSize = _fileStream->readUint32LE();
uint16 frameType = _fileStream->readUint16LE();
uint16 chunkCount = 0;
switch (frameType) {
case FRAME_TYPE:
{
chunkCount = _fileStream->readUint16LE();
// Note: The overridden delay is a 16-bit integer (word), whereas the normal delay is a 32-bit integer (dword)
// the frame delay is the FLIC "speed", in milliseconds.
uint16 newFrameDelay = _fileStream->readUint16LE(); // "speed", in milliseconds
if (newFrameDelay > 0)
_frameDelay = newFrameDelay;
_fileStream->readUint16LE(); // reserved, always 0
uint16 newWidth = _fileStream->readUint16LE();
uint16 newHeight = _fileStream->readUint16LE();
if ((newWidth != 0) && (newHeight != 0)) {
if (newWidth == 0)
newWidth = _surface->w;
if (newHeight == 0)
newHeight = _surface->h;
_surface->free();
delete _surface;
_surface = new Graphics::Surface();
_surface->create(newWidth, newHeight, Graphics::PixelFormat::createFormatCLUT8());
}
}
break;
default:
error("FlicDecoder::decodeFrame(): unknown main chunk type (type = 0x%02X)", frameType);
break;
}
// Read subchunks
if (frameType == FRAME_TYPE) {
for (uint32 i = 0; i < chunkCount; ++i) {
frameSize = _fileStream->readUint32LE();
frameType = _fileStream->readUint16LE();
uint8 *data = new uint8[frameSize - 6];
_fileStream->read(data, frameSize - 6);
switch (frameType) {
case FLI_SETPAL:
unpackPalette(data);
_dirtyPalette = true;
break;
case FLI_SS2:
decodeDeltaFLC(data);
break;
case FLI_BRUN:
decodeByteRun(data);
break;
case FLI_COPY:
copyFrame(data);
break;
case PSTAMP:
/* PSTAMP - skip for now */
break;
default:
error("FlicDecoder::decodeNextFrame(): unknown subchunk type (type = 0x%02X)", frameType);
break;
}
delete[] data;
}
}
_curFrame++;
_nextFrameStartTime += _frameDelay;
if (_atRingFrame) {
// If we decoded the ring frame, seek to the second frame
_atRingFrame = false;
_fileStream->seek(_offsetFrame2);
}
return _surface;
}
