ffplay: always queue attachment pictures after flushing the video packet queue

Requeue them after seeking and also after opening a video stream. Also don't
fill the video queue in case of an attached picture video stream since there
will be no more than one packet from that stream.
Signed-off-by: Marton Balint <cus@passwd.hu>

ffplay.c

@@ -2552,6 +2552,7 @@ static int stream_component_open(VideoState *is, int stream_index)
 
         packet_queue_start(&is->videoq);
         is->video_tid = SDL_CreateThread(video_thread, is);
+        is->queue_attachments_req = 1;
         break;
     case AVMEDIA_TYPE_SUBTITLE:
         is->subtitle_stream = stream_index;
@@ -2851,12 +2852,18 @@ static int read_thread(void *arg)
                 }
             }
             is->seek_req = 0;
+            is->queue_attachments_req = 1;
             eof = 0;
             if (is->paused)
                 step_to_next_frame(is);
         }
         if (is->queue_attachments_req) {
-            avformat_queue_attached_pictures(ic);
+            if (is->video_st && is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC) {
+                AVPacket copy;
+                if ((ret = av_copy_packet(&copy, &is->video_st->attached_pic)) < 0)
+                    goto fail;
+                packet_queue_put(&is->videoq, &copy);
+            }
             is->queue_attachments_req = 0;
         }
 
@@ -2864,7 +2871,8 @@ static int read_thread(void *arg)
         if (infinite_buffer<1 &&
               (is->audioq.size + is->videoq.size + is->subtitleq.size > MAX_QUEUE_SIZE
             || (   (is->audioq   .nb_packets > MIN_FRAMES || is->audio_stream < 0 || is->audioq.abort_request)
-                && (is->videoq   .nb_packets > MIN_FRAMES || is->video_stream < 0 || is->videoq.abort_request)
+                && (is->videoq   .nb_packets > MIN_FRAMES || is->video_stream < 0 || is->videoq.abort_request
+                    || (is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC))
                 && (is->subtitleq.nb_packets > MIN_FRAMES || is->subtitle_stream < 0 || is->subtitleq.abort_request)))) {
             /* wait 10 ms */
             SDL_LockMutex(wait_mutex);
@@ -2919,7 +2927,8 @@ static int read_thread(void *arg)
                 <= ((double)duration / 1000000);
         if (pkt->stream_index == is->audio_stream && pkt_in_play_range) {
             packet_queue_put(&is->audioq, pkt);
-        } else if (pkt->stream_index == is->video_stream && pkt_in_play_range) {
+        } else if (pkt->stream_index == is->video_stream && pkt_in_play_range
+                   && !(is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC)) {
             packet_queue_put(&is->videoq, pkt);
         } else if (pkt->stream_index == is->subtitle_stream && pkt_in_play_range) {
             packet_queue_put(&is->subtitleq, pkt);
@@ -3050,8 +3059,6 @@ static void stream_cycle_channel(VideoState *is, int codec_type)
  the_end:
     stream_component_close(is, old_index);
     stream_component_open(is, stream_index);
-    if (codec_type == AVMEDIA_TYPE_VIDEO)
-        is->queue_attachments_req = 1;
 }