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Parse and use the information from the frame rate extension header for MPEG-2. 

-identify still does not show the right values though.
Fixes bug #1636.


git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@30681 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
reimar 2010-02-21 13:53:41 +00:00
parent 28cf6ea2be
commit 264e6c23fe
3 changed files with 11 additions and 4 deletions
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3
libmpdemux/mpeg_hdr.c
View File

@ -81,6 +81,9 @@ static int header_process_sequence_extension (mp_mpeg_header_t * picture,
return 1;
picture->progressive_sequence = (buffer[1] >> 3) & 1;
picture->frame_rate_extension_n = ((buffer[5] >> 5) & 3) + 1;
picture->frame_rate_extension_d = (buffer[5] & 0x1f) + 1;
picture->mpeg1 = 0;
return 0;
}

2
libmpdemux/mpeg_hdr.h
View File

@ -27,6 +27,8 @@ typedef struct {
int aspect_ratio_information;
int frame_rate_code;
float fps;
int frame_rate_extension_n;
int frame_rate_extension_d;
int bitrate; // 0x3FFFF==VBR
// timing:
int picture_structure;

10
libmpdemux/video.c
View File

@ -433,6 +433,7 @@ int video_read_frame(sh_video_t* sh_video,float* frame_time_ptr,unsigned char**
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);
@ -469,14 +470,15 @@ int video_read_frame(sh_video_t* sh_video,float* frame_time_ptr,unsigned char**
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!=picture.fps) if(!force_fps && !telecine){
mp_msg(MSGT_CPLAYER,MSGL_WARN,"Warning! FPS changed %5.3f -> %5.3f (%f) [%d] \n",sh_video->fps,picture.fps,sh_video->fps-picture.fps,picture.frame_rate_code);
sh_video->fps=picture.fps;
sh_video->frametime=1.0/picture.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: