[PATCH] Allow provider name and service name to be set in mpegts muxer

[Georgi Chorbadzhiyski]

With this patch mpegts muxer uses provider_name and service_name (in
addition to title) metadata to set service_provider_name and service_name
fields in SDT.

Example usage:
   ffmpeg -i file.ts -f mpegts -acodec copy -vcodec copy -f mpegts -metadata provider_name="Some provider" -metadata service_name="Some Channel" "udp://239.0.70.2:5000?pkt_size=1316&ttl=1"
---
 libavformat/avformat.h  |    2 ++
 libavformat/mpegtsenc.c |   10 +++++++---
 2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/libavformat/avformat.h b/libavformat/avformat.h
index b484649..1f4e0bc 100644
--- a/libavformat/avformat.h
+++ b/libavformat/avformat.h
@@ -163,6 +163,8 @@ struct AVFormatContext;
  * publisher    -- name of the label/publisher.
  * title        -- name of the work.
  * track        -- number of this work in the set, can be in form current/total.
+ * provider_name-- Set service_provider_name when using mpegts muxer.
+ * service_name -- Set service_name when using mpegts muxer.
  */
 
 #define AV_METADATA_MATCH_CASE      1
diff --git a/libavformat/mpegtsenc.c b/libavformat/mpegtsenc.c
index bfd21db..bd50750 100644
--- a/libavformat/mpegtsenc.c
+++ b/libavformat/mpegtsenc.c
@@ -391,18 +391,22 @@ static int mpegts_write_header(AVFormatContext *s)
     MpegTSWriteStream *ts_st;
     MpegTSService *service;
     AVStream *st, *pcr_st = NULL;
-    AVMetadataTag *title;
+    AVMetadataTag *title, *provider;
     int i, j;
     const char *service_name;
+    const char *provider_name;
     int *pids;
 
     ts->tsid = DEFAULT_TSID;
     ts->onid = DEFAULT_ONID;
     /* allocate a single DVB service */
     title = av_metadata_get(s->metadata, "title", NULL, 0);
+    if (!title)
+        title = av_metadata_get(s->metadata, "service_name", NULL, 0);
     service_name = title ? title->value : DEFAULT_SERVICE_NAME;
-    service = mpegts_add_service(ts, DEFAULT_SID,
-                                 DEFAULT_PROVIDER_NAME, service_name);
+    provider = av_metadata_get(s->metadata, "provider_name", NULL, 0);
+    provider_name = provider ? provider->value : DEFAULT_PROVIDER_NAME;
+    service = mpegts_add_service(ts, DEFAULT_SID, provider_name, service_name);
     service->pmt.write_packet = section_write_packet;
     service->pmt.opaque = s;
     service->pmt.cc = 15;
-- 
1.7.3.4


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