// decode a frame
static mp_image_t* decode(sh_video_t *sh,void* data,int len,int flags){
mp_image_t* mpi;
static vo_mpegpes_t packet;
mp_mpeg_header_t picture;
const unsigned char *d = data;
if(len>10 && !d[0] && !d[1] && d[2]==1 && d[3]==0xB3) {
float old_aspect = sh->aspect;
int oldw = sh->disp_w, oldh = sh->disp_h;
mp_header_process_sequence_header(&picture, &d[4]);
sh->aspect = mpeg12_aspect_info(&picture);
sh->disp_w = picture.display_picture_width;
sh->disp_h = picture.display_picture_height;
if(sh->aspect != old_aspect || sh->disp_w != oldw || sh->disp_h != oldh) {
if(!mpcodecs_config_vo(sh, sh->disp_w,sh->disp_h,IMGFMT_MPEGPES))
return 0;
}
}
mpi=mpcodecs_get_image(sh, MP_IMGTYPE_EXPORT, 0, sh->disp_w, sh->disp_h);
packet.data=data;
packet.size=len;
packet.timestamp=sh->timer*90000.0;
packet.id=0x1E0; //+sh_video->ds->id;
mpi->planes[0]=(uint8_t*)(&packet);
return mpi;
}
int video_read_frame(sh_video_t* sh_video,float* frame_time_ptr,unsigned char** start,int force_fps){
demux_stream_t *d_video=sh_video->ds;
demuxer_t *demuxer=d_video->demuxer;
float frame_time=1;
float pts1=d_video->pts;
float pts=0;
float fps;
int picture_coding_type=0;
int in_size=0;
video_codec_t video_codec = find_video_codec(sh_video);
*start=NULL;
if(video_codec == VIDEO_MPEG12){
int in_frame=0;
//float newfps;
//videobuf_len=0;
while(videobuf_len<VIDEOBUFFER_SIZE-MAX_VIDEO_PACKET_SIZE){
int i=sync_video_packet(d_video);
//void* buffer=&videobuffer[videobuf_len+4];
int start=videobuf_len+4;
if(in_frame){
if(i<0x101 || i>=0x1B0){ // not slice code -> end of frame
if(!i) return -1; // EOF
break;
}
} else {
if(i==0x100){
pts=d_video->pts;
d_video->pts=0;
}
if(i>=0x101 && i<0x1B0) in_frame=1; // picture startcode
else if(!i) return -1; // EOF
}
if(!read_video_packet(d_video)) return -1; // EOF
// process headers:
switch(i){
case 0x1B3: mp_header_process_sequence_header (&picture, &videobuffer[start]);break;
case 0x1B5: mp_header_process_extension (&picture, &videobuffer[start]);break;
case 0x1B2: process_userdata (&videobuffer[start], videobuf_len-start);break;
case 0x100: picture_coding_type=(videobuffer[start+1] >> 3) & 7;break;
}
}
fps = picture.fps * picture.frame_rate_extension_n / picture.frame_rate_extension_d;
*start=videobuffer; in_size=videobuf_len;
// get mpeg fps:
if(sh_video->fps!=fps) if(!force_fps && !telecine){
mp_msg(MSGT_CPLAYER,MSGL_WARN,"Warning! FPS changed %5.3f -> %5.3f (%f) [%d] \n",sh_video->fps,fps,sh_video->fps-fps,picture.frame_rate_code);
sh_video->fps=fps;
sh_video->frametime=1.0/fps;
}
// fix mpeg2 frametime:
frame_time=(picture.display_time)*0.01f;
picture.display_time=100;
videobuf_len=0;
telecine_cnt*=0.9; // drift out error
telecine_cnt+=frame_time-5.0/4.0;
mp_msg(MSGT_DECVIDEO,MSGL_DBG2,"\r telecine = %3.1f %5.3f \n",frame_time,telecine_cnt);
if(telecine){
frame_time=1;
if(telecine_cnt<-1.5 || telecine_cnt>1.5){
mp_msg(MSGT_DECVIDEO,MSGL_INFO,MSGTR_LeaveTelecineMode);
telecine=0;
}
} else
if(telecine_cnt>-0.5 && telecine_cnt<0.5 && !force_fps){
sh_video->fps=sh_video->fps*4/5;
sh_video->frametime=sh_video->frametime*5/4;
mp_msg(MSGT_DECVIDEO,MSGL_INFO,MSGTR_EnterTelecineMode);
telecine=1;
}
} else if(video_codec == VIDEO_MPEG4){
int video_read_properties(sh_video_t *sh_video){
demux_stream_t *d_video=sh_video->ds;
video_codec_t video_codec = find_video_codec(sh_video);
// Determine image properties:
switch(video_codec){
case VIDEO_OTHER: {
if((d_video->demuxer->file_format == DEMUXER_TYPE_ASF) || (d_video->demuxer->file_format == DEMUXER_TYPE_AVI)) {
// display info:
// in case no strf chunk has been seen in avi, we have no bitmap header
if(!sh_video->bih) return 0;
sh_video->format=sh_video->bih->biCompression;
sh_video->disp_w=sh_video->bih->biWidth;
sh_video->disp_h=abs(sh_video->bih->biHeight);
}
break;
}
case VIDEO_MPEG4: {
int pos = 0, vop_cnt=0, units[3];
videobuf_len=0; videobuf_code_len=0;
mp_msg(MSGT_DECVIDEO,MSGL_V,"Searching for Video Object Start code... ");
while(1){
int i=sync_video_packet(d_video);
if(i<=0x11F) break; // found it!
if(!i || !skip_video_packet(d_video)){
mp_msg(MSGT_DECVIDEO,MSGL_V,"NONE :(\n");
return 0;
}
}
mp_msg(MSGT_DECVIDEO,MSGL_V,"OK!\n");
if(!videobuffer) {
videobuffer = memalign(8, VIDEOBUFFER_SIZE + MP_INPUT_BUFFER_PADDING_SIZE);
if (videobuffer) memset(videobuffer+VIDEOBUFFER_SIZE, 0, MP_INPUT_BUFFER_PADDING_SIZE);
else {
mp_msg(MSGT_DECVIDEO,MSGL_ERR,MSGTR_ShMemAllocFail);
return 0;
}
}
mp_msg(MSGT_DECVIDEO,MSGL_V,"Searching for Video Object Layer Start code... ");
while(1){
int i=sync_video_packet(d_video);
mp_msg(MSGT_DECVIDEO,MSGL_V,"M4V: 0x%X\n",i);
if(i>=0x120 && i<=0x12F) break; // found it!
if(!i || !read_video_packet(d_video)){
mp_msg(MSGT_DECVIDEO,MSGL_V,"NONE :(\n");
return 0;
}
}
pos = videobuf_len+4;
if(!read_video_packet(d_video)){
mp_msg(MSGT_DECVIDEO,MSGL_ERR,"Can't read Video Object Layer Header\n");
return 0;
}
mp4_header_process_vol(&picture, &(videobuffer[pos]));
mp_msg(MSGT_DECVIDEO,MSGL_V,"OK! FPS SEEMS TO BE %.3f\nSearching for Video Object Plane Start code... ", sh_video->fps);
mp4_init:
while(1){
int i=sync_video_packet(d_video);
if(i==0x1B6) break; // found it!
if(!i || !read_video_packet(d_video)){
mp_msg(MSGT_DECVIDEO,MSGL_V,"NONE :(\n");
return 0;
}
}
pos = videobuf_len+4;
if(!read_video_packet(d_video)){
mp_msg(MSGT_DECVIDEO,MSGL_ERR,"Can't read Video Object Plane Header\n");
return 0;
}
mp4_header_process_vop(&picture, &(videobuffer[pos]));
sh_video->disp_w = picture.display_picture_width;
sh_video->disp_h = picture.display_picture_height;
units[vop_cnt] = picture.timeinc_unit;
vop_cnt++;
//mp_msg(MSGT_DECVIDEO,MSGL_V, "TYPE: %d, unit: %d\n", picture.picture_type, picture.timeinc_unit);
if(!picture.fps) {
int i, mn, md, mx, diff;
if(vop_cnt < 3)
goto mp4_init;
i=0;
mn = mx = units[0];
for(i=0; i<3; i++) {
if(units[i] < mn)
mn = units[i];
if(units[i] > mx)
mx = units[i];
}
md = mn;
for(i=0; i<3; i++) {
if((units[i] > mn) && (units[i] < mx))
md = units[i];
}
mp_msg(MSGT_DECVIDEO,MSGL_V, "MIN: %d, mid: %d, max: %d\n", mn, md, mx);
if(mx - md > md - mn)
diff = md - mn;
else
diff = mx - md;
if(diff > 0){
picture.fps = ((float)picture.timeinc_resolution) / diff;
mp_msg(MSGT_DECVIDEO,MSGL_V, "FPS seems to be: %f, resolution: %d, delta_units: %d\n", picture.fps, picture.timeinc_resolution, diff);
}
}
if(picture.fps) {
sh_video->fps=picture.fps;
sh_video->frametime=1.0/picture.fps;
mp_msg(MSGT_DECVIDEO,MSGL_INFO, "FPS seems to be: %f\n", picture.fps);
}
mp_msg(MSGT_DECVIDEO,MSGL_V,"OK!\n");
sh_video->format=0x10000004;
break;
}
case VIDEO_H264: {
int pos = 0;
videobuf_len=0; videobuf_code_len=0;
mp_msg(MSGT_DECVIDEO,MSGL_V,"Searching for sequence parameter set... ");
while(1){
int i=sync_video_packet(d_video);
if((i&~0x60) == 0x107 && i != 0x107) break; // found it!
if(!i || !skip_video_packet(d_video)){
mp_msg(MSGT_DECVIDEO,MSGL_V,"NONE :(\n");
return 0;
}
}
mp_msg(MSGT_DECVIDEO,MSGL_V,"OK!\n");
if(!videobuffer) {
videobuffer = memalign(8, VIDEOBUFFER_SIZE + MP_INPUT_BUFFER_PADDING_SIZE);
if (videobuffer) memset(videobuffer+VIDEOBUFFER_SIZE, 0, MP_INPUT_BUFFER_PADDING_SIZE);
else {
mp_msg(MSGT_DECVIDEO,MSGL_ERR,MSGTR_ShMemAllocFail);
return 0;
}
}
pos = videobuf_len+4;
if(!read_video_packet(d_video)){
mp_msg(MSGT_DECVIDEO,MSGL_ERR,"Can't read sequence parameter set\n");
return 0;
}
h264_parse_sps(&picture, &(videobuffer[pos]), videobuf_len - pos);
sh_video->disp_w=picture.display_picture_width;
sh_video->disp_h=picture.display_picture_height;
mp_msg(MSGT_DECVIDEO,MSGL_V,"Searching for picture parameter set... ");
while(1){
int i=sync_video_packet(d_video);
mp_msg(MSGT_DECVIDEO,MSGL_V,"H264: 0x%X\n",i);
if((i&~0x60) == 0x108 && i != 0x108) break; // found it!
if(!i || !read_video_packet(d_video)){
mp_msg(MSGT_DECVIDEO,MSGL_V,"NONE :(\n");
return 0;
}
}
mp_msg(MSGT_DECVIDEO,MSGL_V,"OK!\nSearching for Slice... ");
while(1){
int i=sync_video_packet(d_video);
if((i&~0x60) == 0x101 || (i&~0x60) == 0x102 || (i&~0x60) == 0x105) break; // found it!
if(!i || !read_video_packet(d_video)){
mp_msg(MSGT_DECVIDEO,MSGL_V,"NONE :(\n");
return 0;
}
}
mp_msg(MSGT_DECVIDEO,MSGL_V,"OK!\n");
sh_video->format=0x10000005;
if(picture.fps) {
sh_video->fps=picture.fps;
sh_video->frametime=1.0/picture.fps;
mp_msg(MSGT_DECVIDEO,MSGL_INFO, "FPS seems to be: %f\n", picture.fps);
}
break;
}
case VIDEO_MPEG12: {
if (d_video->demuxer->file_format == DEMUXER_TYPE_ASF) { // DVR-MS
if(!sh_video->bih) return 0;
sh_video->format=sh_video->bih->biCompression;
}
mpeg_header_parser:
// Find sequence_header first:
videobuf_len=0; videobuf_code_len=0;
telecine=0; telecine_cnt=-2.5;
mp_msg(MSGT_DECVIDEO,MSGL_V,"Searching for sequence header... ");
while(1){
int i=sync_video_packet(d_video);
if(i==0x1B3) break; // found it!
if(!i || !skip_video_packet(d_video)){
if( mp_msg_test(MSGT_DECVIDEO,MSGL_V) ) mp_msg(MSGT_DECVIDEO,MSGL_V,"NONE :(\n");
mp_msg(MSGT_DECVIDEO,MSGL_ERR,MSGTR_MpegNoSequHdr);
return 0;
}
}
mp_msg(MSGT_DECVIDEO,MSGL_V,"OK!\n");
// ========= Read & process sequence header & extension ============
if(!videobuffer) {
videobuffer = memalign(8, VIDEOBUFFER_SIZE + MP_INPUT_BUFFER_PADDING_SIZE);
if (videobuffer) memset(videobuffer+VIDEOBUFFER_SIZE, 0, MP_INPUT_BUFFER_PADDING_SIZE);
else {
mp_msg(MSGT_DECVIDEO,MSGL_ERR,MSGTR_ShMemAllocFail);
return 0;
}
}
if(!read_video_packet(d_video)){
mp_msg(MSGT_DECVIDEO,MSGL_ERR,MSGTR_CannotReadMpegSequHdr);
return 0;
}
if(mp_header_process_sequence_header (&picture, &videobuffer[4])) {
mp_msg(MSGT_DECVIDEO,MSGL_ERR,MSGTR_BadMpegSequHdr);
goto mpeg_header_parser;
}
if(sync_video_packet(d_video)==0x1B5){ // next packet is seq. ext.
int pos=videobuf_len;
if(!read_video_packet(d_video)){
mp_msg(MSGT_DECVIDEO,MSGL_ERR,MSGTR_CannotReadMpegSequHdrEx);
return 0;
}
if(mp_header_process_extension (&picture, &videobuffer[pos+4])) {
mp_msg(MSGT_DECVIDEO,MSGL_ERR,MSGTR_BadMpegSequHdrEx);
return 0;
}
}
// display info:
sh_video->format=picture.mpeg1?0x10000001:0x10000002; // mpeg video
sh_video->fps=picture.fps * picture.frame_rate_extension_n / picture.frame_rate_extension_d;
if(!sh_video->fps){
sh_video->frametime=0;
} else {
sh_video->frametime=1.0/sh_video->fps;
}
sh_video->disp_w=picture.display_picture_width;
sh_video->disp_h=picture.display_picture_height;
// bitrate:
if(picture.bitrate!=0x3FFFF) // unspecified/VBR ?
sh_video->i_bps=picture.bitrate * 400 / 8;
// info:
mp_dbg(MSGT_DECVIDEO,MSGL_DBG2,"mpeg bitrate: %d (%X)\n",picture.bitrate,picture.bitrate);
mp_msg(MSGT_DECVIDEO,MSGL_INFO,"VIDEO: %s %dx%d (aspect %d) %5.3f fps %5.1f kbps (%4.1f kbyte/s)\n",
picture.mpeg1?"MPEG1":"MPEG2",
sh_video->disp_w,sh_video->disp_h,
picture.aspect_ratio_information,
sh_video->fps,
sh_video->i_bps * 8 / 1000.0,
sh_video->i_bps / 1000.0 );
break;
}
case VIDEO_VC1: {
// Find sequence_header:
videobuf_len=0;
videobuf_code_len=0;
mp_msg(MSGT_DECVIDEO,MSGL_INFO,"Searching for VC1 sequence header... ");
while(1){
int i=sync_video_packet(d_video);
if(i==0x10F) break; // found it!
if(!i || !skip_video_packet(d_video)){
if( mp_msg_test(MSGT_DECVIDEO,MSGL_V) ) mp_msg(MSGT_DECVIDEO,MSGL_V,"NONE :(\n");
mp_msg(MSGT_DECVIDEO,MSGL_ERR, "Couldn't find VC-1 sequence header\n");
return 0;
}
}
mp_msg(MSGT_DECVIDEO,MSGL_INFO,"found\n");
if(!videobuffer) {
videobuffer = memalign(8, VIDEOBUFFER_SIZE + MP_INPUT_BUFFER_PADDING_SIZE);
if (videobuffer) memset(videobuffer+VIDEOBUFFER_SIZE, 0, MP_INPUT_BUFFER_PADDING_SIZE);
else {
mp_msg(MSGT_DECVIDEO,MSGL_ERR,MSGTR_ShMemAllocFail);
return 0;
}
}
if(!read_video_packet(d_video)){
mp_msg(MSGT_DECVIDEO,MSGL_ERR, "Couldn't read VC-1 sequence header!\n");
return 0;
}
while(1) {
int i=sync_video_packet(d_video);
if(i==0x10E) break; // found it!
if(!i || !skip_video_packet(d_video)){
mp_msg(MSGT_DECVIDEO,MSGL_V,"Couldn't find VC-1 entry point sync-code:(\n");
return 0;
}
}
if(!read_video_packet(d_video)){
mp_msg(MSGT_DECVIDEO,MSGL_V,"Couldn't read VC-1 entry point sync-code:(\n");
return 0;
}
if(mp_vc1_decode_sequence_header(&picture, &videobuffer[4], videobuf_len-4)) {
sh_video->bih = calloc(1, sizeof(*sh_video->bih) + videobuf_len);
if(sh_video->bih == NULL) {
mp_msg(MSGT_DECVIDEO,MSGL_ERR,"Couldn't alloc %d bytes for VC-1 extradata!\n", sizeof(*sh_video->bih) + videobuf_len);
return 0;
}
sh_video->bih->biSize= sizeof(*sh_video->bih) + videobuf_len;
memcpy(sh_video->bih + 1, videobuffer, videobuf_len);
sh_video->bih->biCompression = sh_video->format;
sh_video->bih->biWidth = sh_video->disp_w = picture.display_picture_width;
sh_video->bih->biHeight = sh_video->disp_h = picture.display_picture_height;
if(picture.fps > 0) {
sh_video->frametime=1.0/picture.fps;
sh_video->fps = picture.fps;
}
mp_msg(MSGT_DECVIDEO,MSGL_INFO,"VIDEO: VC-1 %dx%d, %5.3f fps, header len: %d\n",
sh_video->disp_w, sh_video->disp_h, sh_video->fps, videobuf_len);
}
break;
}
} // switch(file_format)
return 1;
}