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avplay: Do not try to allocate new frames when the player is closing 

The allocation event can trigger while the decoding thread is already
closing.

Bug-Id: 1052
CC: libav-stable@libav.org
This commit is contained in:
Luca Barbato 2017-04-17 22:22:17 +00:00
parent 41262498ff
commit 8c0cadd17e
1 changed files with 13 additions and 2 deletions
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15
avtools/avplay.c
View File

@ -213,6 +213,7 @@ typedef struct PlayerState {
AVFilterContext *in_video_filter; // the first filter in the video chain
AVFilterContext *out_video_filter; // the last filter in the video chain
SDL_mutex *video_filter_mutex;
float skip_frames;
float skip_frames_index;
@ -1201,6 +1202,7 @@ static void player_close(PlayerState *is)
vp->bmp = NULL;
}
}
SDL_DestroyMutex(is->video_filter_mutex);
SDL_DestroyMutex(is->pictq_mutex);
SDL_DestroyCond(is->pictq_cond);
SDL_DestroyMutex(is->subpq_mutex);
@ -1617,6 +1619,9 @@ static int video_thread(void *arg)
stream_pause(player);
}
the_end:
SDL_LockMutex(is->video_filter_mutex);
is->out_video_filter = NULL;
SDL_UnlockMutex(is->video_filter_mutex);
av_freep(&vfilters);
avfilter_graph_free(&graph);
av_packet_unref(&pkt);
@ -2552,6 +2557,8 @@ static int stream_open(PlayerState *is,
return ret;
}
is->video_filter_mutex = SDL_CreateMutex();
/* start video display */
is->pictq_mutex = SDL_CreateMutex();
is->pictq_cond = SDL_CreateCond();
@ -2827,8 +2834,12 @@ static void event_loop(void)
do_exit();
break;
case FF_ALLOC_EVENT:
video_open(event.user.data1);
alloc_picture(event.user.data1);
SDL_LockMutex(player->video_filter_mutex);
if (player->out_video_filter) {
video_open(event.user.data1);
alloc_picture(event.user.data1);
}
SDL_UnlockMutex(player->video_filter_mutex);
break;
case FF_REFRESH_EVENT:
video_refresh_timer(event.user.data1);