Merge commit 'd4ae8ac92f619507aadd021bb67b517d39d3a36f'

[ffmpeg] / libavformat / utils.c

diff --git a/libavformat/utils.c b/libavformat/utils.c
index 13d4c6b1ee57ffd0b9bd49e3705b97c5d705f17c..6e828f7ce9ed27537e7238d6b8cd4516d6e78aa0 100644 (file)
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -712,34 +712,6 @@ static int determinable_frame_size(AVCodecContext *avctx)
     return 0;
 }
 
-/**
- * Get the number of samples of an audio frame. Return -1 on error.
- */
-int ff_get_audio_frame_size(AVCodecContext *enc, int size, int mux)
-{
-    int frame_size;
-
-    /* give frame_size priority if demuxing */
-    if (!mux && enc->frame_size > 1)
-        return enc->frame_size;
-
-    if ((frame_size = av_get_audio_frame_duration(enc, size)) > 0)
-        return frame_size;
-
-    /* Fall back on using frame_size if muxing. */
-    if (enc->frame_size > 1)
-        return enc->frame_size;
-
-    //For WMA we currently have no other means to calculate duration thus we
-    //do it here by assuming CBR, which is true for all known cases.
-    if (!mux && enc->bit_rate>0 && size>0 && enc->sample_rate>0 && enc->block_align>1) {
-        if (enc->codec_id == AV_CODEC_ID_WMAV1 || enc->codec_id == AV_CODEC_ID_WMAV2)
-            return  ((int64_t)size * 8 * enc->sample_rate) / enc->bit_rate;
-    }
-
-    return -1;
-}
-
 /**
  * Return the frame duration in seconds. Return 0 if not available.
  */
@@ -775,7 +747,7 @@ void ff_compute_frame_duration(int *pnum, int *pden, AVStream *st,
         }
         break;
     case AVMEDIA_TYPE_AUDIO:
-        frame_size = ff_get_audio_frame_size(st->codec, pkt->size, 0);
+        frame_size = av_get_audio_frame_duration(st->codec, pkt->size);
         if (frame_size <= 0 || st->codec->sample_rate <= 0)
             break;
         *pnum = frame_size;
@@ -1939,7 +1911,6 @@ int64_t ff_gen_search(AVFormatContext *s, int stream_index, int64_t target_ts,
             av_log(s, AV_LOG_ERROR, "read_timestamp() failed in the middle\n");
             return -1;
         }
-        assert(ts != AV_NOPTS_VALUE);
         if (target_ts <= ts) {
             pos_limit = start_pos - 1;
             pos_max   = pos;
@@ -3092,6 +3063,7 @@ int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
                 break;
             if (st->first_dts == AV_NOPTS_VALUE &&
                 !(ic->iformat->flags & AVFMT_NOTIMESTAMPS) &&
+                st->codec_info_nb_frames < ic->max_ts_probe &&
                 (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
                  st->codec->codec_type == AVMEDIA_TYPE_AUDIO))
                 break;
@@ -3553,6 +3525,7 @@ void avformat_free_context(AVFormatContext *s)
     av_dict_free(&s->metadata);
     av_freep(&s->streams);
     av_freep(&s->internal);
+    flush_packet_queue(s);
     av_free(s);
 }
 
@@ -4216,6 +4189,29 @@ int avformat_match_stream_specifier(AVFormatContext *s, AVStream *st,
         stream_id = strtol(spec, &endptr, 0);
         if (!*endptr)
             return stream_id == st->id;
+    } else if (*spec == 'm' && *(spec + 1) == ':') {
+        AVDictionaryEntry *tag;
+        char *key, *val;
+        int ret;
+
+        spec += 2;
+        val = strchr(spec, ':');
+
+        key = val ? av_strndup(spec, val - spec) : av_strdup(spec);
+        if (!key)
+            return AVERROR(ENOMEM);
+
+        tag = av_dict_get(st->metadata, key, NULL, 0);
+        if (tag) {
+            if (!val || !strcmp(tag->value, val + 1))
+                ret = 1;
+            else
+                ret = 0;
+        } else
+            ret = 0;
+
+        av_freep(&key);
+        return ret;
     } else if (!*spec) /* empty specifier, matches everything */
         return 1;