android ffmpeg错误致命信号11

Question

我在 Android 上使用 ffmpeg。并使用 RTSP 网络摄像头。

我引用 here.

我得到了很好的视频。

但是当我结束视频时收到错误消息。
Fatal signal 11 (SIGSEGV) at 0x8a7c0d04 (code=1), thread 2537 (Thread-13225)
所以我使用日志发现了错误。但我不知道为什么会发生错误。

下面的代码是错误的位置。

void closeMovie(){
  av_read_pause(gFormatCtx);
  if (gVideoBuffer != NULL) {
    free(gVideoBuffer);
    gVideoBuffer = NULL;
  }
  if (gFrame != NULL)
      av_free(gFrame);
  if (gFrameRGB != NULL)
      av_free(gFrameRGB);
  if (gVideoCodecCtx != NULL) {
      avcodec_close(gVideoCodecCtx);
      av_free(gVideoCodecCtx);
      gVideoCodecCtx = NULL;
  }
  if (gFormatCtx != NULL) {
      **av_close_input_file(gFormatCtx);** //here
      gFormatCtx = NULL;
  }
}

和

void av_close_input_file(AVFormatContext *s)
{
  AVIOContext *pb = (s->iformat->flags & AVFMT_NOFILE) || (s->flags & AVFMT_FLAG_CUSTOM_IO) ?
                   NULL : s->pb;
  **av_close_input_stream(s);**// here
  if (pb)
    avio_close(pb);
}

和

void av_close_input_stream(AVFormatContext *s)
{
    flush_packet_queue(s);
    if (s->iformat->read_close)
       **s->iformat->read_close(s);** //here
    avformat_free_context(s);
}

如果 //s->iformat->read_close(s);不崩溃

但我无法再次打开视频。再次打开视频我必须退出应用程序。

对不起，我英语说得不太好。
谢谢阅读。

ps1。日志猫

12-10 10:08:02.991: D/TAG(21770): TAG - closeMovie1 - in
12-10 10:08:02.991: D/TAG(21770): TAG - avcodec_close - in
12-10 10:08:02.991: D/TAG(21770): av_opt_free - on
12-10 10:08:02.991: D/TAG(21770): av_opt_free - out
12-10 10:08:02.991: D/TAG(21770): TAG - avcodec_close - out
12-10 10:08:02.991: D/TAG(21770): TAG - av_close_input_file - in
12-10 10:08:02.991: D/TAG(21770): TAG - avformat_close_input - in
12-10 10:08:02.991: D/TAG(21770): TAG - flush_packet_queue - 
12-10 10:08:02.991: D/TAG(21770): flush_packet_queue - on
12-10 10:08:02.991: D/TAG(21770): flush_packet_queue - out
12-10 10:08:02.991: D/TAG(21770): TAG - s->iformat->read_close : 0
12-10 10:08:02.991: D/TAG(21770): TAG - avformat_free_context 
12-10 10:08:02.991: D/TAG(21770): TAG - avformat_free_context - in
12-10 10:08:02.991: D/TAG(21770): av_opt_free - on
12-10 10:08:02.991: D/TAG(21770): av_opt_free - out
12-10 10:08:02.991: D/TAG(21770): av_opt_free - on
12-10 10:08:02.991: D/TAG(21770): av_opt_free - out
12-10 10:08:02.991: D/TAG(21770): TAG - avformat_for_length s->nb_streams - 3
12-10 10:08:02.991: D/TAG(21770): TAG - avformat_for_nb_streams - in
12-10 10:08:02.991: D/TAG(21770): TAG - avformat_for_ nb_streams - out
12-10 10:08:02.991: D/TAG(21770): TAG - avformat_for_nb_streams - in
12-10 10:08:02.991: D/TAG(21770): TAG - avformat_for_ nb_streams - out
12-10 10:08:02.991: D/TAG(21770): TAG - avformat_for_nb_streams - in
12-10 10:08:02.991: D/TAG(21770): TAG - avformat_for_ nb_streams - out
12-10 10:08:02.991: D/TAG(21770): TAG - avformat_for_length s->nb_programs-1 - -1
12-10 10:08:02.991: D/TAG(21770): TAG - freep 1
12-10 10:08:02.991: D/TAG(21770): TAG - freep 2
12-10 10:08:02.991: D/TAG(21770): TAG - while
12-10 10:08:02.991: D/TAG(21770): TAG - freep 3
12-10 10:08:02.991: D/TAG(21770): TAG - dict_free 1
12-10 10:08:02.991: D/TAG(21770): TAG - freep 4
12-10 10:08:02.991: D/TAG(21770): TAG - freep 3
12-10 10:08:02.991: D/TAG(21770): TAG - avformat_free_context - out
12-10 10:08:02.991: D/TAG(21770): TAG - avio_close - in
12-10 10:08:02.991: D/TAG(21770): TAG - avio_close - 1
12-10 10:08:02.991: D/TAG(21770): TAG - avio_close - 2
12-10 10:08:02.991: D/TAG(21770): TAG - avio_close - out
12-10 10:08:02.991: D/TAG(21770): TAG - avio_close(pb) : 0
12-10 10:08:02.991: D/TAG(21770): TAG - avio_close - in
12-10 10:08:02.991: D/TAG(21770): TAG - avio_close - 1
12-10 10:08:02.991: D/TAG(21770): TAG - avio_close - 2
12-10 10:08:02.991: D/TAG(21770): TAG - avio_close - out
12-10 10:08:02.991: D/TAG(21770): TAG - avformat_close_input - out
12-10 10:08:02.991: D/TAG(21770): TAG - av_close_input_file - out
12-10 10:08:02.991: D/TAG(21770): TAG - closeMovie1 - out
12-10 10:08:03.151: D/AbsListView(21770): onVisibilityChanged() is called, visibility : 0
12-10 10:08:03.151: D/AbsListView(21770): unregisterIRListener() is called 
12-10 10:08:03.201: D/AbsListView(21770): unregisterIRListener() is called 
12-10 10:08:03.221: D/AbsListView(21770): unregisterIRListener() is called 
12-10 10:08:03.241: A/libc(21770): Fatal signal 11 (SIGSEGV) at 0x8bb85698 (code=1), thread 21938 (Thread-23561)

ps2.日志的顺序。

(BasicPlayer.c) closeMovie in->
(utils.c) avcodec_close ->
(utils.c) av_close_input_file ->
(utils.c) avformat_close_input ->
(utils.c) flush_packet_queue ->
(utils.c) **s->iformat->read_close(s)** ->
(utils.c) avformat_free_context ->
(utils.c) avio_close(pb) ->
(BasicPlayer.c) closeMovie out

Answer 1

谢谢阅读。

我不得不解决。

添加代码utils.c

typedef struct {
    int audio_size;    /**< audio packet size (bytes) */
    int video_size;    /**< video packet size (bytes) */
    int palette_size;  /**< palette size (bytes) */
    int video_type;    /**< per-frame video compression type */
} JVFrame;
typedef struct {
     JVFrame *frames;
     enum {
         JV_AUDIO = 0,
         JV_VIDEO,
         JV_PADDING
     } state;
     int64_t pts;
} JVDemuxContext;

和

static int read_close(AVFormatContext *s)
{

    JVDemuxContext *jv = s->priv_data;
    av_free(jv->frames);
    return 0;
}

并修改代码。

void av_close_input_stream(AVFormatContext *s)
{
    flush_packet_queue(s);
    if (s->iformat->read_close)
       //**s->iformat->read_close(s);** //here fixed --> 
       read_close(s);
    avformat_free_context(s);
}

我不知道为什么会产生错误。

但是通过修改代码解决了。

如果您有任何问题，我希望这会有所帮助。

对不起，我英语说得不太好。谢谢阅读。