// return value:
// 0 = EOF or no stream found
// 1 = successfully read a packet
static int demux_smjpeg_fill_buffer(demuxer_t *demux, demux_stream_t *ds)
{
int dtype, dsize, dpts;
demux->filepos = stream_tell(demux->stream);
dtype = stream_read_dword_le(demux->stream);
dpts = stream_read_dword(demux->stream);
dsize = stream_read_dword(demux->stream);
switch(dtype)
{
case mmioFOURCC('s','n','d','D'):
/* fixme, but no decoder implemented yet */
ds_read_packet(demux->audio, demux->stream, dsize,
(float)dpts/1000.0, demux->filepos, 0);
break;
case mmioFOURCC('v','i','d','D'):
ds_read_packet(demux->video, demux->stream, dsize,
(float)dpts/1000.0, demux->filepos, 0);
break;
case mmioFOURCC('D','O','N','E'):
return 1;
default:
return 0;
}
return 1;
}
// return value:
// 0 = EOF or no stream found
// 1 = successfully read a packet
static int demux_roq_fill_buffer(demuxer_t *demuxer, demux_stream_t *ds)
{
sh_video_t *sh_video = demuxer->video->sh;
roq_data_t *roq_data = (roq_data_t *)demuxer->priv;
roq_chunk_t roq_chunk;
if (roq_data->current_chunk >= roq_data->total_chunks)
return 0;
roq_chunk = roq_data->chunks[roq_data->current_chunk];
// make sure we're at the right place in the stream and fetch the chunk
stream_seek(demuxer->stream, roq_chunk.chunk_offset);
if (roq_chunk.chunk_type == CHUNK_TYPE_AUDIO)
ds_read_packet(demuxer->audio, demuxer->stream, roq_chunk.chunk_size,
0,
roq_chunk.chunk_offset, 0);
else
ds_read_packet(demuxer->video, demuxer->stream, roq_chunk.chunk_size,
roq_chunk.video_chunk_number / sh_video->fps,
roq_chunk.chunk_offset, 0);
roq_data->current_chunk++;
return 1;
}
// return value:
// 0 = EOF or no stream found
// 1 = successfully read a packet
static int demux_fli_fill_buffer(demuxer_t *demuxer, demux_stream_t *ds){
fli_frames_t *frames = (fli_frames_t *)demuxer->priv;
sh_video_t *sh_video = demuxer->video->sh;
// see if the end has been reached
if (frames->current_frame >= frames->num_frames)
return 0;
// fetch the frame from the file
// first, position the file properly since ds_read_packet() doesn't
// seem to do it, even though it takes a file offset as a parameter
stream_seek(demuxer->stream, frames->filepos[frames->current_frame]);
ds_read_packet(demuxer->video,
demuxer->stream,
frames->frame_size[frames->current_frame],
frames->current_frame/sh_video->fps,
frames->filepos[frames->current_frame],
0 /* what flags? -> demuxer.h (alex) */
);
// get the next frame ready
frames->current_frame++;
return 1;
}
// return value:
// 0 = EOF or no stream found
// 1 = successfully read a packet
static int demux_lmlm4_fill_buffer(demuxer_t *demux, demux_stream_t *ds)
{
FrameInfo frameInfo;
double pts;
int id=1;
int ret;
//hdr:
demux->filepos = stream_tell(demux->stream);
mp_msg(MSGT_DEMUX, MSGL_DBG2, "fpos = %"PRId64"\n", (int64_t)demux->filepos);
ret=getFrame(demux, &frameInfo);
if(ret<=0) return ret; // EOF/error
pts=demux->video->sh ? frames*((sh_video_t*)(demux->video->sh))->frametime : 0;
switch(frameInfo.frameType) {
case FRAMETYPE_AUDIO_MPEG1L2:
mp_dbg(MSGT_DEMUX, MSGL_DBG2, "Audio Packet\n");
if (!video)
{
stream_skip(demux->stream, frameInfo.frameSize + frameInfo.paddingSize);
mp_msg(MSGT_DEMUX, MSGL_V, "Skip Audio Packet\n");
return -1; //goto hdr;
}
if(demux->audio->id==-1) {
if(!demux->a_streams[id]) new_sh_audio(demux,id, NULL);
demux->audio->id=id;
demux->audio->sh=demux->a_streams[id];
((sh_audio_t*)(demux->audio->sh))->format=0x50; // mpeg audio layer 1/2
}
if(demux->audio->id==id)
ds_read_packet(demux->audio, demux->stream, frameInfo.frameSize,
pts, demux->filepos, 0);
else
stream_skip(demux->stream,frameInfo.frameSize);
break;
case FRAMETYPE_I:
if (!video) {
video = 1;
mp_dbg(MSGT_DEMUX, MSGL_DBG2, "First Video Packet\n");
}
case FRAMETYPE_P:
frames=(frames+1)&(1024*1024-1); // wrap around at 4 hrs to avoid inaccurate float calculations
if (!video)
{
stream_skip(demux->stream, frameInfo.frameSize + frameInfo.paddingSize);
mp_msg(MSGT_DEMUX, MSGL_V, "Skip Video P Packet\n");
return -1; //goto hdr;
}
mp_dbg(MSGT_DEMUX, MSGL_DBG2, "Video Packet\n");
if(demux->video->id==-1) {
if(!demux->v_streams[id]) new_sh_video(demux,id);
demux->video->id=id;
demux->video->sh=demux->v_streams[id];
((sh_video_t*)(demux->video->sh))->format=0x10000004; // mpeg4-ES
}
if(demux->video->id==id)
ds_read_packet(demux->video, demux->stream, frameInfo.frameSize,
pts, demux->filepos, 0);
break;
default:
stream_skip(demux->stream,frameInfo.frameSize);
}
stream_skip(demux->stream, frameInfo.paddingSize);
return 1;
}
static int demux_avi_read_packet(demuxer_t *demux,demux_stream_t *ds,unsigned int id,unsigned int len,int idxpos,int flags){
avi_priv_t *priv=demux->priv;
int skip;
float pts=0;
mp_dbg(MSGT_DEMUX,MSGL_DBG3,"demux_avi.read_packet: %X\n",id);
if(ds==demux->audio){
if(priv->pts_corrected==0){
if(priv->pts_has_video){
// we have video pts now
float delay=0;
if(((sh_audio_t*)(ds->sh))->wf->nAvgBytesPerSec)
delay=(float)priv->pts_corr_bytes/((sh_audio_t*)(ds->sh))->wf->nAvgBytesPerSec;
mp_msg(MSGT_DEMUX,MSGL_V,"XXX initial v_pts=%5.3f a_pos=%d (%5.3f) \n",priv->avi_audio_pts,priv->pts_corr_bytes,delay);
//priv->pts_correction=-priv->avi_audio_pts+delay;
priv->pts_correction=delay-priv->avi_audio_pts;
priv->avi_audio_pts+=priv->pts_correction;
priv->pts_corrected=1;
} else
priv->pts_corr_bytes+=len;
}
if(pts_from_bps){
pts = priv->audio_block_no *
(float)((sh_audio_t*)demux->audio->sh)->audio.dwScale /
(float)((sh_audio_t*)demux->audio->sh)->audio.dwRate;
} else
pts=priv->avi_audio_pts; //+priv->pts_correction;
priv->avi_audio_pts=0;
// update blockcount:
priv->audio_block_no+=priv->audio_block_size ?
((len+priv->audio_block_size-1)/priv->audio_block_size) : 1;
} else
if(ds==demux->video){
// video
if(priv->skip_video_frames>0){
// drop frame (seeking)
--priv->skip_video_frames;
ds=NULL;
}
pts = priv->avi_video_pts = priv->video_pack_no *
(float)((sh_video_t*)demux->video->sh)->video.dwScale /
(float)((sh_video_t*)demux->video->sh)->video.dwRate;
priv->avi_audio_pts=priv->avi_video_pts+priv->pts_correction;
priv->pts_has_video=1;
if(ds) ++priv->video_pack_no;
}
skip=(len+1)&(~1); // total bytes in this chunk
if(ds){
mp_dbg(MSGT_DEMUX,MSGL_DBG2,"DEMUX_AVI: Read %d data bytes from packet %04X\n",len,id);
ds_read_packet(ds,demux->stream,len,pts,idxpos,flags);
skip-=len;
}
skip = FFMAX(skip, 0);
if (avi_stream_id(id) > 99 && id != mmioFOURCC('J','U','N','K'))
skip = FFMIN(skip, 65536);
if(skip){
mp_dbg(MSGT_DEMUX,MSGL_DBG2,"DEMUX_AVI: Skipping %d bytes from packet %04X\n",skip,id);
stream_skip(demux->stream,skip);
}
return ds?1:0;
}
// return value:
// 0 = EOF or no stream found
// 1 = successfully read a packet
static int demux_film_fill_buffer(demuxer_t *demuxer, demux_stream_t *ds)
{
int i;
unsigned char byte_swap;
int cvid_size;
sh_video_t *sh_video = demuxer->video->sh;
sh_audio_t *sh_audio = demuxer->audio->sh;
film_data_t *film_data = (film_data_t *)demuxer->priv;
film_chunk_t film_chunk;
int length_fix_bytes;
demux_packet_t* dp;
// see if the end has been reached
if (film_data->current_chunk >= film_data->total_chunks)
return 0;
film_chunk = film_data->chunks[film_data->current_chunk];
// position stream and fetch chunk
stream_seek(demuxer->stream, film_chunk.chunk_offset);
// load the chunks manually (instead of using ds_read_packet()), since
// they require some adjustment
// (all ones in syncinfo1 indicates an audio chunk)
if (film_chunk.syncinfo1 == 0xFFFFFFFF)
{
if(demuxer->audio->id>=-1){ // audio not disabled
dp = new_demux_packet(film_chunk.chunk_size);
if (stream_read(demuxer->stream, dp->buffer, film_chunk.chunk_size) !=
film_chunk.chunk_size)
return 0;
dp->pts = film_chunk.pts;
dp->pos = film_chunk.chunk_offset;
dp->flags = 0;
// adjust the data before queuing it:
// 8-bit: signed -> unsigned
// 16-bit: big-endian -> little-endian
if (sh_audio->wf->wBitsPerSample == 8)
for (i = 0; i < film_chunk.chunk_size; i++)
dp->buffer[i] += 128;
else
for (i = 0; i < film_chunk.chunk_size; i += 2)
{
byte_swap = dp->buffer[i];
dp->buffer[i] = dp->buffer[i + 1];
dp->buffer[i + 1] = byte_swap;
}
/* for SegaSaturn .cpk file, translate audio data if stereo */
if (sh_audio->wf->nChannels == 2) {
if (sh_audio->wf->wBitsPerSample == 8) {
unsigned char* tmp = dp->buffer;
unsigned char buf[film_chunk.chunk_size];
for(i = 0; i < film_chunk.chunk_size/2; i++) {
buf[i*2] = tmp[i];
buf[i*2+1] = tmp[film_chunk.chunk_size/2+i];
}
memcpy( tmp, buf, film_chunk.chunk_size );
}
else {/* for 16bit */
unsigned short* tmp = dp->buffer;
unsigned short buf[film_chunk.chunk_size/2];
for(i = 0; i < film_chunk.chunk_size/4; i++) {
buf[i*2] = tmp[i];
buf[i*2+1] = tmp[film_chunk.chunk_size/4+i];
}
memcpy( tmp, buf, film_chunk.chunk_size );
}
}
// append packet to DS stream
ds_add_packet(demuxer->audio, dp);
}
}
else
{
// if the demuxer is dealing with CVID data, deal with it a special way
if (sh_video->format == mmioFOURCC('c', 'v', 'i', 'd'))
{
if (film_data->film_version)
length_fix_bytes = 2;
else
length_fix_bytes = 6;
// account for the fix bytes when allocating the buffer
dp = new_demux_packet(film_chunk.chunk_size - length_fix_bytes);
// these CVID data chunks have a few extra bytes; skip them
if (stream_read(demuxer->stream, dp->buffer, 10) != 10)
return 0;
stream_skip(demuxer->stream, length_fix_bytes);
if (stream_read(demuxer->stream, dp->buffer + 10,
film_chunk.chunk_size - (10 + length_fix_bytes)) !=
(film_chunk.chunk_size - (10 + length_fix_bytes)))
return 0;
dp->pts = film_chunk.pts;
dp->pos = film_chunk.chunk_offset;
dp->flags = (film_chunk.syncinfo1 & 0x80000000) ? 1 : 0;
// fix the CVID chunk size
cvid_size = film_chunk.chunk_size - length_fix_bytes;
dp->buffer[1] = (cvid_size >> 16) & 0xFF;
dp->buffer[2] = (cvid_size >> 8) & 0xFF;
dp->buffer[3] = (cvid_size >> 0) & 0xFF;
// append packet to DS stream
ds_add_packet(demuxer->video, dp);
}
else
{
ds_read_packet(demuxer->video, demuxer->stream, film_chunk.chunk_size,
film_chunk.pts,
film_chunk.chunk_offset, (film_chunk.syncinfo1 & 0x80000000) ? 1 : 0);
}
}
