mplayer_novideo_0.21.c

自己移植的linux下的流媒体播放器原代码,支持mms协议,支持ftp和http协议.

if(!sh_audio){
  mp_msg(MSGT_CPLAYER,MSGL_INFO,MSGTR_NoSound);
  mp_msg(MSGT_CPLAYER,MSGL_V,"Freeing %d unused audio chunks.\n",d_audio->packs);
  ds_free_packs(d_audio); // free buffered chunks
  d_audio->id=-2;         // do not read audio chunks
  goto goto_next_file;
}



//==================== START PLAYING =======================

if(loop_times>1) loop_times--; else
if(loop_times==1) loop_times = -1;

mp_msg(MSGT_CPLAYER,MSGL_INFO,MSGTR_StartPlaying);fflush(stdout); //"starting  playback..."

InitTimer();



total_time_usage_start=GetTimer();
audio_time_usage=0; video_time_usage=0; vout_time_usage=0;
total_frame_cnt=0; drop_frame_cnt=0; // fix for multifile fps benchmark
play_n_frames=play_n_frames_mf;

if(play_n_frames==0){
  eof=PT_NEXT_ENTRY; goto goto_next_file;
}

while(!eof){
    float aq_sleep_time=0;

    if(play_n_frames>=0){
      --play_n_frames;
      if(play_n_frames<0) eof = PT_NEXT_ENTRY;
    }

/*========================== PLAY AUDIO ============================*/

while(sh_audio){
  unsigned int t;
  double tt;
  int playsize;

  current_module="play_audio";
  
  ao_data.pts=((sh_video?sh_video->timer:0)+sh_audio->delay)*90000.0;
  playsize=audio_out->get_space();
  
  // handle audio-only case:
  if(playsize < ao_data.outburst &&
      !sh_video) {  // buffer is full, do not block here!!!
    usec_sleep(10000); // Wait a tick before retry
    continue;
  }
  
  if(playsize>MAX_OUTBURST) playsize=MAX_OUTBURST; // we shouldn't exceed it!

  // Fill buffer if needed:
  current_module="decode_audio";   // Enter AUDIO decoder module
  t=GetTimer();
  while(sh_audio->a_out_buffer_len<playsize && !d_audio->eof){
    int ret=decode_audio(sh_audio,&sh_audio->a_out_buffer[sh_audio->a_out_buffer_len],
        playsize-sh_audio->a_out_buffer_len,sh_audio->a_out_buffer_size-sh_audio->a_out_buffer_len);
    if(ret<=0) break; // EOF?
    sh_audio->a_out_buffer_len+=ret;
  }
  t=GetTimer()-t;
  tt = t*0.000001f; audio_time_usage+=tt;
  if(playsize>sh_audio->a_out_buffer_len) playsize=sh_audio->a_out_buffer_len;

  // play audio:  
  current_module="play_audio";
  playsize=audio_out->play(sh_audio->a_out_buffer,playsize,0);

  if(playsize>0){
      sh_audio->a_out_buffer_len-=playsize;
      memmove(sh_audio->a_out_buffer,&sh_audio->a_out_buffer[playsize],sh_audio->a_out_buffer_len);
      sh_audio->delay+=playback_speed*playsize/((float)((ao_data.bps && sh_audio->afilter) ?
          ao_data.bps : sh_audio->o_bps));
  }

  break;
} // while(sh_audio)


  if(!quiet) {
    float a_pos = sh_audio->delay - audio_out->get_delay() * playback_speed;
    print_status(a_pos, 0, 0);
  }
  if(d_audio->eof) eof = PT_NEXT_ENTRY;



/*========================== PLAY VIDEO ============================*/

//============================ Handle PAUSE ===============================

  current_module="pause";

#ifdef USE_OSD
  if(osd_visible){
    if (!--osd_visible){
       vo_osd_progbar_type=-1; // disable
       vo_osd_changed(OSDTYPE_PROGBAR);
       if (osd_function != OSD_PAUSE)
	   osd_function = OSD_PLAY;
    }
  }
#endif

  if(osd_function==OSD_PAUSE){
    mp_cmd_t* cmd;
      if(!quiet) {
	mp_msg(MSGT_CPLAYER,MSGL_STATUS,MSGTR_Paused);
	fflush(stdout);
      }



      if (audio_out && sh_audio)
         audio_out->pause();	// pause audio, keep data if possible

      while( (cmd = mp_input_get_cmd(20,1,1)) == NULL) {



             usec_sleep(20000);
         }
      if (cmd && cmd->id == MP_CMD_PAUSE) {
      cmd = mp_input_get_cmd(0,1,0);
      mp_cmd_free(cmd);
      }
         osd_function=OSD_PLAY;
      if (audio_out && sh_audio)
        audio_out->resume();	// resume audio

      (void)GetRelativeTime();	// keep TF around FT in next cycle

  }

// handle -sstep
if(step_sec>0) {
	osd_function=OSD_FFW;
	rel_seek_secs+=step_sec;
}



//================= EDL =========================================



//================= Keyboard events, SEEKing ====================

  current_module="key_events";

{
  mp_cmd_t* cmd;
  int brk_cmd = 0;
  while( !brk_cmd && (cmd = mp_input_get_cmd(0,0,0)) != NULL) {
    switch(cmd->id) {
    case MP_CMD_SEEK : {
      float v;
      int abs;
      osd_show_percentage = 25;
      v = cmd->args[0].v.f;
      abs = (cmd->nargs > 1) ? cmd->args[1].v.i : 0;
      if(abs==2) { /* Absolute seek to a specific timestamp in seconds */
        abs_seek_pos = 1;

	rel_seek_secs = v;
      }
      else if(abs) { /* Absolute seek by percentage */
	abs_seek_pos = 3;

	rel_seek_secs = v/100.0;
      }
      else {
	rel_seek_secs+= v;
	osd_function= (v > 0) ? OSD_FFW : OSD_REW;
      }
      brk_cmd = 1;
    } break;


    case MP_CMD_AUDIO_DELAY : {
      float v = cmd->args[0].v.f;
      audio_delay += v;
      osd_show_av_delay = 9;
      if(sh_audio) sh_audio->delay+= v;
    } break;
    case MP_CMD_SPEED_INCR : {
      float v = cmd->args[0].v.f;
      playback_speed += v;

      build_afilter_chain(sh_audio, &ao_data);
    } break;
    case MP_CMD_SPEED_MULT : {
      float v = cmd->args[0].v.f;
      playback_speed *= v;

      build_afilter_chain(sh_audio, &ao_data);
    } break;
    case MP_CMD_SPEED_SET : {
      float v = cmd->args[0].v.f;
      playback_speed = v;

      build_afilter_chain(sh_audio, &ao_data);
    } break;
    case MP_CMD_FRAME_STEP :
    case MP_CMD_PAUSE : {
      cmd->pausing = 1;
      brk_cmd = 1;
    } break;
    case MP_CMD_QUIT : {
      exit_player_with_rc(MSGTR_Exit_quit, (cmd->nargs > 0)? cmd->args[0].v.i : 0);
    }
    case MP_CMD_GRAB_FRAMES : {
      grab_frames=2;
    } break;
    case MP_CMD_PLAY_TREE_STEP : {
      int n = cmd->args[0].v.i == 0 ? 1 : cmd->args[0].v.i;
      int force = cmd->args[1].v.i;

      if(!force && playtree_iter) {
	play_tree_iter_t* i = play_tree_iter_new_copy(playtree_iter);
	
	if(play_tree_iter_step(i,n,0) == PLAY_TREE_ITER_ENTRY)
	  eof = (n > 0) ? PT_NEXT_ENTRY : PT_PREV_ENTRY;
	play_tree_iter_free(i);
      } else
	eof = (n > 0) ? PT_NEXT_ENTRY : PT_PREV_ENTRY;
      if(eof)
	play_tree_step = n;
      brk_cmd = 1;
    } break;
    case MP_CMD_PLAY_TREE_UP_STEP : {
      int n = cmd->args[0].v.i > 0 ? 1 : -1;
      int force = cmd->args[1].v.i;

      if(!force && playtree_iter) {
	play_tree_iter_t* i = play_tree_iter_new_copy(playtree_iter);
	if(play_tree_iter_up_step(i,n,0) == PLAY_TREE_ITER_ENTRY)
	  eof = (n > 0) ? PT_UP_NEXT : PT_UP_PREV;
	play_tree_iter_free(i);
      } else
	eof = (n > 0) ? PT_UP_NEXT : PT_UP_PREV;
      brk_cmd = 1;
    } break;
    case MP_CMD_PLAY_ALT_SRC_STEP : {
      if(playtree_iter && playtree_iter->num_files > 1) {
	int v = cmd->args[0].v.i;
	if(v > 0 && playtree_iter->file < playtree_iter->num_files)
	  eof = PT_NEXT_SRC;
	else if(v < 0 && playtree_iter->file > 1)
	  eof = PT_PREV_SRC;
      }
      brk_cmd = 1;
    } break;






    case MP_CMD_VOLUME :  {
      int v = cmd->args[0].v.i;

		// start change for absolute volume value
		int abs = (cmd->nargs > 1) ? cmd->args[1].v.i : 0;
		

		if( abs )
		{
			mixer_setvolume(&mixer, (float)v, (float)v );
		} else {
      if(v > 0)
	mixer_incvolume(&mixer);
      else
	mixer_decvolume(&mixer);
		}
	  

    } break;
    case MP_CMD_MUTE:

      mixer_mute(&mixer);
      break;
    case MP_CMD_LOADFILE : {
      play_tree_t* e = play_tree_new();
      play_tree_add_file(e,cmd->args[0].v.s);

      // Go back to the start point
      while(play_tree_iter_up_step(playtree_iter,0,1) != PLAY_TREE_ITER_END)
	/* NOP */;
      play_tree_free_list(playtree->child,1);
      play_tree_set_child(playtree,e);
      play_tree_iter_step(playtree_iter,0,0);
      eof = PT_NEXT_SRC;
      brk_cmd = 1;
    } break;
    case MP_CMD_LOADLIST : {
      play_tree_t* e = parse_playlist_file(cmd->args[0].v.s);
      if(!e)
	mp_msg(MSGT_CPLAYER,MSGL_ERR,MSGTR_PlaylistLoadUnable,cmd->args[0].v.s);
      else {
	// Go back to the start point
	while(play_tree_iter_up_step(playtree_iter,0,1) != PLAY_TREE_ITER_END)
	  /* NOP */;
	play_tree_free_list(playtree->child,1);
	play_tree_set_child(playtree,e);
	play_tree_iter_step(playtree_iter,0,0);
	eof = PT_NEXT_SRC;	
      }
      brk_cmd = 1;
    } break;



    case MP_CMD_FRAMEDROPPING :  {
      int v = cmd->args[0].v.i;
      if(v < 0){
	frame_dropping = (frame_dropping+1)%3;

      }
      else
	frame_dropping = v > 2 ? 2 : v;
    } break;









    case MP_CMD_GET_TIME_LENGTH : {
	mp_msg(MSGT_GLOBAL,MSGL_INFO,MSGTR_AnsLength, demuxer_get_time_length(demuxer));
    } break;



    case MP_CMD_SWITCH_AUDIO :
        demuxer_switch_audio(demuxer);
        break;



    default : {

      mp_msg(MSGT_CPLAYER, MSGL_V, "Received unknown cmd %s\n",cmd->name);
    }
    }
    if (cmd->pausing)
      osd_function = OSD_PAUSE;
    mp_cmd_free(cmd);
  }
}

  if (seek_to_sec) {
    int a,b; float d;
    
    if (sscanf(seek_to_sec, "%d:%d:%f", &a,&b,&d)==3)
	rel_seek_secs += 3600*a +60*b +d ;
    else if (sscanf(seek_to_sec, "%d:%f", &a, &d)==2)
	rel_seek_secs += 60*a +d;
    else if (sscanf(seek_to_sec, "%f", &d)==1)
	rel_seek_secs += d;

     seek_to_sec = NULL;
  }
  
  /* Looping. */
  if(eof==1 && loop_times>=0) {
    int l = loop_times;
    play_tree_iter_step(playtree_iter,0,0);
    loop_times = l;
    mp_msg(MSGT_CPLAYER,MSGL_V,"loop_times = %d, eof = %d\n", loop_times,eof);

    if(loop_times>1) loop_times--; else
    if(loop_times==1) loop_times=-1;
    play_n_frames=play_n_frames_mf;
    eof=0;
    abs_seek_pos=3; rel_seek_secs=0; // seek to start of movie (0%)
    loop_seek = 1;
  }

if(rel_seek_secs || abs_seek_pos){
  current_module="seek";
  if(demux_seek(demuxer,rel_seek_secs,abs_seek_pos)){
      // success:
      /* FIXME there should be real seeking for vobsub */

      fflush(stdout);


      if(sh_audio){
        current_module="seek_audio_reset";
        audio_out->reset(); // stop audio, throwing away buffered data
      }


	  	
  }

  rel_seek_secs=0;
  abs_seek_pos=0;
  frame_time_remaining=0;
  current_module=NULL;
  loop_seek=0;
}




//================= Update OSD ====================

} // while(!eof)

mp_msg(MSGT_GLOBAL,MSGL_V,"EOF code: %d  \n",eof);

}

goto_next_file:  // don't jump here after ao/vo/getch initialization!

mp_msg(MSGT_CPLAYER,MSGL_INFO,"\n");

if(benchmark){
  double tot=video_time_usage+vout_time_usage+audio_time_usage;
  double total_time_usage;
  total_time_usage_start=GetTimer()-total_time_usage_start;
  total_time_usage = (float)total_time_usage_start*0.000001;
  mp_msg(MSGT_CPLAYER,MSGL_INFO,"\nBENCHMARKs: VC:%8.3fs VO:%8.3fs A:%8.3fs Sys:%8.3fs = %8.3fs\n",
	 video_time_usage,vout_time_usage,audio_time_usage,
	 total_time_usage-tot,total_time_usage);
  if(total_time_usage>0.0)
    mp_msg(MSGT_CPLAYER,MSGL_INFO,"BENCHMARK%%: VC:%8.4f%% VO:%8.4f%% A:%8.4f%% Sys:%8.4f%% = %8.4f%%\n",
	   100.0*video_time_usage/total_time_usage,
	   100.0*vout_time_usage/total_time_usage,
	   100.0*audio_time_usage/total_time_usage,
	   100.0*(total_time_usage-tot)/total_time_usage,
	   100.0);
  if(total_frame_cnt && frame_dropping)
    mp_msg(MSGT_CPLAYER,MSGL_INFO,"BENCHMARKn: disp: %d (%3.2f fps)  drop: %d (%d%%)  total: %d (%3.2f fps)\n",
	total_frame_cnt-drop_frame_cnt,
	(total_time_usage>0.5)?((total_frame_cnt-drop_frame_cnt)/total_time_usage):0,
	drop_frame_cnt,
	100*drop_frame_cnt/total_frame_cnt,
	total_frame_cnt,
	(total_time_usage>0.5)?(total_frame_cnt/total_time_usage):0);
  
}

// time to uninit all, except global stuff:
uninit_player(INITED_ALL-(INITED_GUI+INITED_INPUT+(fixed_vo?INITED_VO:0)));



if(eof == PT_NEXT_ENTRY || eof == PT_PREV_ENTRY) {
  eof = eof == PT_NEXT_ENTRY ? 1 : -1;
  if(play_tree_iter_step(playtree_iter,play_tree_step,0) == PLAY_TREE_ITER_ENTRY) {
    eof = 1;
  } else {
    play_tree_iter_free(playtree_iter);
    playtree_iter = NULL;
  }
  play_tree_step = 1;
} else if (eof == PT_UP_NEXT || eof == PT_UP_PREV) {
  eof = eof == PT_UP_NEXT ? 1 : -1;
  if ( playtree_iter ) {
    if(play_tree_iter_up_step(playtree_iter,eof,0) == PLAY_TREE_ITER_ENTRY) {
     eof = 1;
    } else {
      play_tree_iter_free(playtree_iter);
      playtree_iter = NULL;
    }
   }
} else { // NEXT PREV SRC
     eof = eof == PT_PREV_SRC ? -1 : 1;
}

if(eof == 0) eof = 1;

while(playtree_iter != NULL) {
  filename = play_tree_iter_get_file(playtree_iter,eof);
  if(filename == NULL) {
    if( play_tree_iter_step(playtree_iter,eof,0) != PLAY_TREE_ITER_ENTRY) {
      play_tree_iter_free(playtree_iter);
      playtree_iter = NULL;
    };
  } else
    break;
} 



if(use_gui || playtree_iter != NULL){

  eof = 0;
  goto play_next_file;
}


exit_player_with_rc(MSGTR_Exit_eof, 0);

return 1;
}