libavformat: add T.140 RTP depacketization (RFC 4103)

Map this to AV_CODEC_ID_TEXT.

Signed-off-by: Martin Storsjö <martin@martin.st>

Changelog

@@ -20,6 +20,7 @@ version <next>:
 - RTP depacketizer for loss tolerant payload format for MP3 audio (RFC 5219)
 - RTP depacketizer for DV (RFC 6469)
 - Canopus HQX decoder
+- RTP depacketization of T.140 text (RFC 4103)
 
 
 version 11:

libavformat/rtpdec.c

@@ -50,6 +50,12 @@ static RTPDynamicProtocolHandler opus_dynamic_handler = {
     .codec_id   = AV_CODEC_ID_OPUS,
 };
 
+static RTPDynamicProtocolHandler t140_dynamic_handler = { /* RFC 4103 */
+    .enc_name   = "t140",
+    .codec_type = AVMEDIA_TYPE_DATA,
+    .codec_id   = AV_CODEC_ID_TEXT,
+};
+
 static RTPDynamicProtocolHandler *rtp_first_dynamic_payload_handler = NULL;
 
 void ff_register_dynamic_payload_handler(RTPDynamicProtocolHandler *handler)
@@ -98,6 +104,7 @@ void ff_register_rtp_dynamic_payload_handlers(void)
     ff_register_dynamic_payload_handler(&opus_dynamic_handler);
     ff_register_dynamic_payload_handler(&realmedia_mp3_dynamic_handler);
     ff_register_dynamic_payload_handler(&speex_dynamic_handler);
+    ff_register_dynamic_payload_handler(&t140_dynamic_handler);
 }
 
 RTPDynamicProtocolHandler *ff_rtp_handler_find_by_name(const char *name,

libavformat/version.h

@@ -30,7 +30,7 @@
 #include "libavutil/version.h"
 
 #define LIBAVFORMAT_VERSION_MAJOR 56
-#define LIBAVFORMAT_VERSION_MINOR 15
+#define LIBAVFORMAT_VERSION_MINOR 16
 #define LIBAVFORMAT_VERSION_MICRO  0
 
 #define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \