video.c

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// read video frame

#include "config.h"

#include <mplaylib.h>
#ifdef HAVE_MALLOC_H
#include <uclib.h>
#endif
#include <mplaylib.h>
#include <mplaylib.h>
#include <mplaylib.h>

#include "mp_msg.h"
#include "help_mp.h"

#include "stream/stream.h"
#include "demuxer.h"
#include "stheader.h"
#include "parse_es.h"
#include "mpeg_hdr.h"

/* sub_cc (closed captions)*/

#ifdef USE_LIBAVCODEC_SO
#include <ffmpeg/avcodec.h>
#elif defined(USE_LIBAVCODEC)
#include "libavcodec/avcodec.h"
#else
#define FF_INPUT_BUFFER_PADDING_SIZE 8
#endif

/* biCompression constant */
#define BI_RGB        0L

#ifdef STREAMING_LIVE555
#include "demux_rtp.h"
#endif
#undef memcpy
#define memcpy uc_memcpy
static mp_mpeg_header_t picture;

static int telecine=0;
static float telecine_cnt=-2.5;

int video_read_properties(sh_video_t *sh_video){
demux_stream_t *d_video=sh_video->ds;

enum {
	VIDEO_MPEG12,
	VIDEO_MPEG4,
	VIDEO_H264,
	VIDEO_VC1,
	VIDEO_OTHER
} video_codec;

if((d_video->demuxer->file_format == DEMUXER_TYPE_PVA) ||
   (d_video->demuxer->file_format == DEMUXER_TYPE_MPEG_ES) ||
   (d_video->demuxer->file_format == DEMUXER_TYPE_MPEG_GXF) ||
   (d_video->demuxer->file_format == DEMUXER_TYPE_MPEG_PES) ||
   (d_video->demuxer->file_format == DEMUXER_TYPE_MPEG_PS && ((! sh_video->format) || (sh_video->format==0x10000001) || (sh_video->format==0x10000002))) ||
   (d_video->demuxer->file_format == DEMUXER_TYPE_MPEG_TY) ||
   (d_video->demuxer->file_format == DEMUXER_TYPE_MPEG_TS && ((sh_video->format==0x10000001) || (sh_video->format==0x10000002)))
#ifdef STREAMING_LIVE555
  || ((d_video->demuxer->file_format == DEMUXER_TYPE_RTP) && demux_is_mpeg_rtp_stream(d_video->demuxer))
#endif
  )
    video_codec = VIDEO_MPEG12;
  else if((d_video->demuxer->file_format == DEMUXER_TYPE_MPEG4_ES) ||
    ((d_video->demuxer->file_format == DEMUXER_TYPE_MPEG_TS) && (sh_video->format==0x10000004)) ||
    ((d_video->demuxer->file_format == DEMUXER_TYPE_MPEG_PS) && (sh_video->format==0x10000004))
  )
    video_codec = VIDEO_MPEG4;
  else if((d_video->demuxer->file_format == DEMUXER_TYPE_H264_ES) ||
    ((d_video->demuxer->file_format == DEMUXER_TYPE_MPEG_TS) && (sh_video->format==0x10000005)) ||
    ((d_video->demuxer->file_format == DEMUXER_TYPE_MPEG_PS) && (sh_video->format==0x10000005))
  )
    video_codec = VIDEO_H264;
  else if((d_video->demuxer->file_format == DEMUXER_TYPE_MPEG_PS || d_video->demuxer->file_format == DEMUXER_TYPE_MPEG_TS) && (sh_video->format==mmioFOURCC('W', 'V', 'C', '1')))
    video_codec = VIDEO_VC1;
  else
    video_codec = VIDEO_OTHER;
    
// 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... ");fflush(stdout);
   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=(char*)memalign(32,VIDEOBUFFER_SIZE + FF_INPUT_BUFFER_PADDING_SIZE);
     if (videobuffer) memset(videobuffer+VIDEOBUFFER_SIZE, 0, FF_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... ");fflush(stdout);
   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);fflush(stdout);
 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]));
   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... ");fflush(stdout);
   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=(char*)memalign(32,VIDEOBUFFER_SIZE + FF_INPUT_BUFFER_PADDING_SIZE);
     if (videobuffer) memset(videobuffer+VIDEOBUFFER_SIZE, 0, FF_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);
   mp_msg(MSGT_DECVIDEO,MSGL_V,"Searching for picture parameter set... ");fflush(stdout);
   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... ");fflush(stdout);
   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: {
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... ");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( 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=(char*)memalign(32,VIDEOBUFFER_SIZE + FF_INPUT_BUFFER_PADDING_SIZE);
     if (videobuffer) memset(videobuffer+VIDEOBUFFER_SIZE, 0, FF_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;
   if(!sh_video->fps){
     sh_video->frametime=0;
   } else {
     sh_video->frametime=1.0/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=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");