support reordering pts in the decoder (this might be equivalent to mplayers -correct-pts mode)

enable it with -drp (=decoder reorders pts)

Originally committed as revision 8419 to svn://svn.ffmpeg.org/ffmpeg/trunk

ffplay.c

@@ -211,6 +211,7 @@ static enum AVDiscard skip_idct= AVDISCARD_DEFAULT;
 static enum AVDiscard skip_loop_filter= AVDISCARD_DEFAULT;
 static int error_resilience = FF_ER_CAREFUL;
 static int error_concealment = 3;
+static int decoder_reorder_pts= 0;
 
 /* current context */
 static int is_full_screen;
@@ -1328,6 +1329,21 @@ static int output_picture2(VideoState *is, AVFrame *src_frame, double pts1)
     return queue_picture(is, src_frame, pts);
 }
 
+static uint64_t global_video_pkt_pts= AV_NOPTS_VALUE;
+
+static int my_get_buffer(struct AVCodecContext *c, AVFrame *pic){
+    int ret= avcodec_default_get_buffer(c, pic);
+    uint64_t *pts= av_malloc(sizeof(uint64_t));
+    *pts= global_video_pkt_pts;
+    pic->opaque= pts;
+    return ret;
+}
+
+static void my_release_buffer(struct AVCodecContext *c, AVFrame *pic){
+    if(pic) av_freep(&pic->opaque);
+    avcodec_default_release_buffer(c, pic);
+}
+
 static int video_thread(void *arg)
 {
     VideoState *is = arg;
@@ -1350,13 +1366,20 @@ static int video_thread(void *arg)
 
         /* NOTE: ipts is the PTS of the _first_ picture beginning in
            this packet, if any */
-        pts = 0;
-        if (pkt->dts != AV_NOPTS_VALUE)
-            pts = av_q2d(is->video_st->time_base)*pkt->dts;
-
+            global_video_pkt_pts= pkt->pts;
             len1 = avcodec_decode_video(is->video_st->codec,
                                         frame, &got_picture,
                                         pkt->data, pkt->size);
+
+            if(   (decoder_reorder_pts || pkt->dts == AV_NOPTS_VALUE)
+               && frame->opaque && *(uint64_t*)frame->opaque != AV_NOPTS_VALUE)
+                pts= *(uint64_t*)frame->opaque;
+            else if(pkt->dts != AV_NOPTS_VALUE)
+                pts= pkt->dts;
+            else
+                pts= 0;
+            pts *= av_q2d(is->video_st->time_base);
+
 //            if (len1 < 0)
 //                break;
             if (got_picture) {
@@ -1735,6 +1758,9 @@ static int stream_component_open(VideoState *is, int stream_index)
 
         packet_queue_init(&is->videoq);
         is->video_tid = SDL_CreateThread(video_thread, is);
+
+        enc->    get_buffer=     my_get_buffer;
+        enc->release_buffer= my_release_buffer;
         break;
     case CODEC_TYPE_SUBTITLE:
         is->subtitle_stream = stream_index;
@@ -2446,6 +2472,7 @@ const OptionDef options[] = {
     { "vismv", HAS_ARG | OPT_EXPERT, {(void*)opt_vismv}, "visualize motion vectors", "" },
     { "fast", OPT_BOOL | OPT_EXPERT, {(void*)&fast}, "non spec compliant optimizations", "" },
     { "genpts", OPT_BOOL | OPT_EXPERT, {(void*)&genpts}, "generate pts", "" },
+    { "drp", OPT_BOOL |OPT_EXPERT, {(void*)&decoder_reorder_pts}, "let decoder reorder pts", ""},
     { "lowres", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&lowres}, "", "" },
     { "skiploop", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&skip_loop_filter}, "", "" },
     { "skipframe", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&skip_frame}, "", "" },