mirror of
https://github.com/mpv-player/mpv
synced 2024-12-15 03:15:52 +00:00
e5833bde50
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@7466 b3059339-0415-0410-9bf9-f77b7e298cf2
346 lines
11 KiB
C
346 lines
11 KiB
C
// read video frame
|
|
|
|
#include "config.h"
|
|
|
|
#include <stdio.h>
|
|
#ifdef HAVE_MALLOC_H
|
|
#include <malloc.h>
|
|
#endif
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
#include "mp_msg.h"
|
|
#include "help_mp.h"
|
|
|
|
#include "stream.h"
|
|
#include "demuxer.h"
|
|
#include "stheader.h"
|
|
#include "parse_es.h"
|
|
#include "mpeg_hdr.h"
|
|
|
|
/* sub_cc (closed captions)*/
|
|
#include "../sub_cc.h"
|
|
|
|
/* biCompression constant */
|
|
#define BI_RGB 0L
|
|
|
|
static mp_mpeg_header_t picture;
|
|
|
|
int video_read_properties(sh_video_t *sh_video){
|
|
demux_stream_t *d_video=sh_video->ds;
|
|
|
|
// Determine image properties:
|
|
switch(d_video->demuxer->file_format){
|
|
case DEMUXER_TYPE_AVI:
|
|
case DEMUXER_TYPE_ASF: {
|
|
// display info:
|
|
|
|
#if 0
|
|
if(sh_video->bih->biCompression == BI_RGB &&
|
|
(sh_video->video.fccHandler == mmioFOURCC('D', 'I', 'B', ' ') ||
|
|
sh_video->video.fccHandler == mmioFOURCC('R', 'G', 'B', ' ') ||
|
|
sh_video->video.fccHandler == mmioFOURCC('R', 'A', 'W', ' ') ||
|
|
sh_video->video.fccHandler == 0)) {
|
|
sh_video->format = mmioFOURCC(0, 'R', 'G', 'B') | sh_video->bih->biBitCount;
|
|
}
|
|
else
|
|
#endif
|
|
sh_video->format=sh_video->bih->biCompression;
|
|
|
|
sh_video->disp_w=sh_video->bih->biWidth;
|
|
sh_video->disp_h=abs(sh_video->bih->biHeight);
|
|
|
|
#if 1
|
|
/* hack to support decoding of mpeg1 chunks in AVI's with libmpeg2 -- 2002 alex */
|
|
if ((sh_video->format == 0x10000001) ||
|
|
(sh_video->format == 0x10000002) ||
|
|
(sh_video->format == mmioFOURCC('m','p','g','1')) ||
|
|
(sh_video->format == mmioFOURCC('M','P','G','1')) ||
|
|
(sh_video->format == mmioFOURCC('m','p','g','2')) ||
|
|
(sh_video->format == mmioFOURCC('M','P','G','2')) ||
|
|
(sh_video->format == mmioFOURCC('m','p','e','g')) ||
|
|
(sh_video->format == mmioFOURCC('M','P','E','G')))
|
|
{
|
|
int saved_pos, saved_type;
|
|
|
|
/* demuxer pos saving is required for libavcodec mpeg decoder as it's
|
|
reading the mpeg header self! */
|
|
|
|
saved_pos = d_video->buffer_pos;
|
|
saved_type = d_video->demuxer->file_format;
|
|
|
|
d_video->demuxer->file_format = DEMUXER_TYPE_MPEG_ES;
|
|
video_read_properties(sh_video);
|
|
d_video->demuxer->file_format = saved_type;
|
|
d_video->buffer_pos = saved_pos;
|
|
// goto mpeg_header_parser;
|
|
}
|
|
#endif
|
|
break;
|
|
}
|
|
#ifdef STREAMING_LIVE_DOT_COM
|
|
case DEMUXER_TYPE_RTP:
|
|
// If the RTP stream is a MPEG stream, then we use this code to check
|
|
// for MPEG headers:
|
|
if (!demux_is_mpeg_rtp_stream(d_video->demuxer)) break;
|
|
// otherwise fall through to...
|
|
#endif
|
|
case DEMUXER_TYPE_PVA:
|
|
case DEMUXER_TYPE_MPEG_ES:
|
|
case DEMUXER_TYPE_MPEG_PS: {
|
|
//mpeg_header_parser:
|
|
// Find sequence_header first:
|
|
videobuf_len=0; videobuf_code_len=0;
|
|
mp_msg(MSGT_DECVIDEO,MSGL_V,"Searching for sequence header... ");fflush(stdout);
|
|
while(1){
|
|
int i=sync_video_packet(d_video);
|
|
if(i==0x1B3) break; // found it!
|
|
if(!i || !skip_video_packet(d_video)){
|
|
if(verbose) 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");
|
|
// sh_video=d_video->sh;sh_video->ds=d_video;
|
|
// mpeg2_init();
|
|
// ========= Read & process sequence header & extension ============
|
|
if(!videobuffer) videobuffer=(char*)memalign(8,VIDEOBUFFER_SIZE);
|
|
if(!videobuffer){
|
|
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);
|
|
return 0;
|
|
}
|
|
if(sync_video_packet(d_video)==0x1B5){ // next packet is seq. ext.
|
|
// videobuf_len=0;
|
|
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;
|
|
}
|
|
}
|
|
|
|
// printf("picture.fps=%d\n",picture.fps);
|
|
|
|
// fill aspect info:
|
|
switch(picture.aspect_ratio_information){
|
|
case 2: // PAL/NTSC SVCD/DVD 4:3
|
|
case 4: // SECAM 4:3? - XXX check with more files!
|
|
case 8: // PAL VCD 4:3
|
|
case 12: // NTSC VCD 4:3
|
|
sh_video->aspect=4.0/3.0;
|
|
break;
|
|
case 3: // PAL/NTSC Widescreen SVCD/DVD 16:9
|
|
case 6: // (PAL?)/NTSC Widescreen SVCD 16:9
|
|
sh_video->aspect=16.0/9.0;
|
|
break;
|
|
case 9: // Movie Type ??? / 640x480
|
|
sh_video->aspect=0.0;
|
|
break;
|
|
default:
|
|
fprintf(stderr,"Detected unknown aspect_ratio_information in mpeg sequence header.\n"
|
|
"Please report the aspect value (%i) along with the movie type (VGA,PAL,NTSC,"
|
|
"SECAM) and the movie resolution (720x576,352x240,480x480,...) to the MPlayer"
|
|
" developers, so that we can add support for it!\nAssuming 1:1 aspect for now.\n",
|
|
picture.aspect_ratio_information);
|
|
case 1: // VGA 1:1 - do not prescale
|
|
sh_video->aspect=0.0;
|
|
break;
|
|
}
|
|
// display info:
|
|
sh_video->format=picture.mpeg1?0x10000001:0x10000002; // mpeg video
|
|
sh_video->fps=picture.fps*0.0001f;
|
|
if(!sh_video->fps){
|
|
// if(!force_fps){
|
|
// fprintf(stderr,"FPS not specified (or invalid) in the header! Use the -fps option!\n");
|
|
// return 0;
|
|
// }
|
|
sh_video->frametime=0;
|
|
} else {
|
|
sh_video->frametime=10000.0f/(float)picture.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=1000*picture.bitrate/16;
|
|
// 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) %4.2f 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,
|
|
picture.bitrate*0.5f,
|
|
picture.bitrate/16.0f );
|
|
break;
|
|
}
|
|
} // switch(file_format)
|
|
|
|
return 1;
|
|
}
|
|
|
|
static void process_userdata(unsigned char* buf,int len){
|
|
int i;
|
|
/* if the user data starts with "CC", assume it is a CC info packet */
|
|
if(len>2 && buf[0]=='C' && buf[1]=='C'){
|
|
// mp_msg(MSGT_DECVIDEO,MSGL_DBG2,"video.c: process_userdata() detected Closed Captions!\n");
|
|
if(subcc_enabled) subcc_process_data(buf+2,len-2);
|
|
}
|
|
if(verbose<2) return;
|
|
printf( "user_data: len=%3d %02X %02X %02X %02X '",
|
|
len, buf[0], buf[1], buf[2], buf[3]);
|
|
for(i=0;i<len;i++)
|
|
// if(buf[i]>=32 && buf[i]<127) putchar(buf[i]);
|
|
if(buf[i]&0x60) putchar(buf[i]&0x7F);
|
|
printf("'\n");
|
|
}
|
|
|
|
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;
|
|
// unsigned char* start=NULL;
|
|
int in_size=0;
|
|
|
|
*start=NULL;
|
|
|
|
if(demuxer->file_format==DEMUXER_TYPE_MPEG_ES || demuxer->file_format==DEMUXER_TYPE_MPEG_PS
|
|
|| demuxer->file_format==DEMUXER_TYPE_PVA
|
|
#ifdef STREAMING_LIVE_DOT_COM
|
|
|| (demuxer->file_format==DEMUXER_TYPE_RTP && demux_is_mpeg_rtp_stream(demuxer))
|
|
#endif
|
|
){
|
|
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 0
|
|
// send END OF FRAME code:
|
|
videobuffer[videobuf_len+0]=0;
|
|
videobuffer[videobuf_len+1]=0;
|
|
videobuffer[videobuf_len+2]=1;
|
|
videobuffer[videobuf_len+3]=0xFF;
|
|
videobuf_len+=4;
|
|
#endif
|
|
if(!i) return -1; // EOF
|
|
break;
|
|
}
|
|
} else {
|
|
//if(i==0x100) in_frame=1; // picture startcode
|
|
if(i>=0x101 && i<0x1B0) in_frame=1; // picture startcode
|
|
else if(!i) return -1; // EOF
|
|
}
|
|
//if(grab_frames==2 && (i==0x1B3 || i==0x1B8)) grab_frames=1;
|
|
if(!read_video_packet(d_video)) return -1; // EOF
|
|
//printf("read packet 0x%X, len=%d\n",i,videobuf_len);
|
|
// 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;
|
|
}
|
|
}
|
|
|
|
// if(videobuf_len>max_framesize) max_framesize=videobuf_len; // debug
|
|
//printf("--- SEND %d bytes\n",videobuf_len);
|
|
// if(grab_frames==1){
|
|
// FILE *f=fopen("grab.mpg","ab");
|
|
// fwrite(videobuffer,videobuf_len-4,1,f);
|
|
// fclose(f);
|
|
// }
|
|
|
|
*start=videobuffer; in_size=videobuf_len;
|
|
//blit_frame=decode_video(video_out,sh_video,videobuffer,videobuf_len,drop_frame);
|
|
|
|
#if 1
|
|
// get mpeg fps:
|
|
//newfps=frameratecode2framerate[picture->frame_rate_code]*0.0001f;
|
|
if((int)(sh_video->fps*10000+0.5)!=picture.fps) if(!force_fps){
|
|
mp_msg(MSGT_CPLAYER,MSGL_WARN,"Warning! FPS changed %5.3f -> %5.3f (%f) [%d] \n",sh_video->fps,picture.fps*0.0001,sh_video->fps-picture.fps*0.0001,picture.frame_rate_code);
|
|
sh_video->fps=picture.fps*0.0001;
|
|
sh_video->frametime=10000.0f/(float)picture.fps;
|
|
}
|
|
#endif
|
|
|
|
// fix mpeg2 frametime:
|
|
frame_time=(picture.display_time)*0.01f;
|
|
picture.display_time=100;
|
|
videobuf_len=0;
|
|
|
|
} else {
|
|
// frame-based file formats: (AVI,ASF,MOV)
|
|
in_size=ds_get_packet(d_video,start);
|
|
if(in_size<0) return -1; // EOF
|
|
// if(in_size>max_framesize) max_framesize=in_size;
|
|
// blit_frame=decode_video(video_out,sh_video,start,in_size,drop_frame);
|
|
}
|
|
|
|
// vdecode_time=video_time_usage-vdecode_time;
|
|
|
|
//------------------------ frame decoded. --------------------
|
|
|
|
// Increase video timers:
|
|
sh_video->num_frames+=frame_time;
|
|
++sh_video->num_frames_decoded;
|
|
|
|
frame_time*=sh_video->frametime;
|
|
|
|
// override frame_time for variable/unknown FPS formats:
|
|
if(!force_fps) switch(demuxer->file_format){
|
|
case DEMUXER_TYPE_REAL:
|
|
if(d_video->pts>0 && pts1>0 && d_video->pts>pts1)
|
|
frame_time=d_video->pts-pts1;
|
|
break;
|
|
#ifdef USE_TV
|
|
case DEMUXER_TYPE_TV:
|
|
#endif
|
|
case DEMUXER_TYPE_MOV:
|
|
case DEMUXER_TYPE_FILM:
|
|
case DEMUXER_TYPE_VIVO:
|
|
case DEMUXER_TYPE_ASF: {
|
|
float next_pts = ds_get_next_pts(d_video);
|
|
float d= next_pts > 0 ? next_pts - d_video->pts : d_video->pts-pts1;
|
|
if(d>=0){
|
|
if(d>0){
|
|
if((int)sh_video->fps==1000)
|
|
mp_msg(MSGT_CPLAYER,MSGL_V,"\navg. framerate: %d fps \n",(int)(1.0f/d));
|
|
sh_video->frametime=d; // 1ms
|
|
sh_video->fps=1.0f/d;
|
|
}
|
|
frame_time = d;
|
|
} else {
|
|
mp_msg(MSGT_CPLAYER,MSGL_WARN,"\nInvalid frame duration value (%5.3f/%5.3f => %5.3f). Defaulting to %5.3f sec.\n",d_video->pts,next_pts,d,frame_time);
|
|
// frame_time = 1/25.0;
|
|
}
|
|
}
|
|
}
|
|
|
|
if(demuxer->file_format==DEMUXER_TYPE_MPEG_PS ||
|
|
demuxer->file_format==DEMUXER_TYPE_MPEG_ES) d_video->pts+=frame_time;
|
|
|
|
if(frame_time_ptr) *frame_time_ptr=frame_time;
|
|
return in_size;
|
|
|
|
}
|
|
|