avfilter/x86/vf_blend : add 16 bit version for BLEND_SIMPLE, phoenix, difference...

[ffmpeg] / libavformat / mpegts.c

diff --git a/libavformat/mpegts.c b/libavformat/mpegts.c
index 0a3ad057264475de69c5aa7c0f1dad43b4c265f3..37a6aa8bffee71ceb2e3f931fcbee2b288519ee9 100644 (file)
--- a/libavformat/mpegts.c
+++ b/libavformat/mpegts.c
@@ -1840,7 +1840,9 @@ int ff_parse_mpeg2_descriptor(AVFormatContext *fc, AVStream *st, int stream_type
         }
         if (i && language[0]) {
             language[i - 1] = 0;
-            av_dict_set(&st->metadata, "language", language, 0);
+            /* don't overwrite language, as it may already have been set by
+             * another, more specific descriptor (e.g. supplementary audio) */
+            av_dict_set(&st->metadata, "language", language, AV_DICT_DONT_OVERWRITE);
         }
         break;
     case 0x05: /* registration descriptor */
@@ -1895,6 +1897,42 @@ int ff_parse_mpeg2_descriptor(AVFormatContext *fc, AVStream *st, int stream_type
                 st->internal->need_context_update = 1;
             }
         }
+        if (ext_desc_tag == 0x06) { /* supplementary audio descriptor */
+            int flags;
+
+            if (desc_len < 1)
+                return AVERROR_INVALIDDATA;
+            flags = get8(pp, desc_end);
+
+            if ((flags & 0x80) == 0) /* mix_type */
+                st->disposition |= AV_DISPOSITION_DEPENDENT;
+
+            switch ((flags >> 2) & 0x1F) { /* editorial_classification */
+            case 0x01:
+                st->disposition |= AV_DISPOSITION_VISUAL_IMPAIRED;
+                break;
+            case 0x02:
+                st->disposition |= AV_DISPOSITION_HEARING_IMPAIRED;
+                break;
+            case 0x03:
+                st->disposition |= AV_DISPOSITION_VISUAL_IMPAIRED;
+                break;
+            }
+
+            if (flags & 0x01) { /* language_code_present */
+                if (desc_len < 4)
+                    return AVERROR_INVALIDDATA;
+                language[0] = get8(pp, desc_end);
+                language[1] = get8(pp, desc_end);
+                language[2] = get8(pp, desc_end);
+                language[3] = 0;
+
+                /* This language always has to override a possible
+                 * ISO 639 language descriptor language */
+                if (language[0])
+                    av_dict_set(&st->metadata, "language", language, 0);
+            }
+        }
         break;
     default:
         break;