avformat: Improve data streams/codec support

This adds data codec/stream handling where previously there was only
audio/video/subtitles

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavformat/avformat.h

@@ -551,6 +551,7 @@ typedef struct AVOutputFormat {
      * @see avdevice_capabilities_free() for more details.
      */
     int (*free_device_capabilities)(struct AVFormatContext *s, struct AVDeviceCapabilitiesQuery *caps);
+    enum AVCodecID data_codec; /**< default data codec */
 } AVOutputFormat;
 /**
  * @}
@@ -1704,6 +1705,14 @@ typedef struct AVFormatContext {
      */
     AVCodec *subtitle_codec;
 
+    /**
+     * Forced data codec.
+     * This allows forcing a specific decoder, even when there are multiple with
+     * the same codec_id.
+     * Demuxing: Set by user via av_format_set_data_codec (NO direct access).
+     */
+    AVCodec *data_codec;
+
     /**
      * Number of bytes to be written as padding in a metadata header.
      * Demuxing: Unused.
@@ -1755,6 +1764,12 @@ typedef struct AVFormatContext {
      * - demuxing: Set by user.
      */
     uint8_t *dump_separator;
+
+    /**
+     * Forced Data codec_id.
+     * Demuxing: Set by user.
+     */
+    enum AVCodecID data_codec_id;
 } AVFormatContext;
 
 int av_format_get_probe_score(const AVFormatContext *s);
@@ -1764,6 +1779,8 @@ AVCodec * av_format_get_audio_codec(const AVFormatContext *s);
 void      av_format_set_audio_codec(AVFormatContext *s, AVCodec *c);
 AVCodec * av_format_get_subtitle_codec(const AVFormatContext *s);
 void      av_format_set_subtitle_codec(AVFormatContext *s, AVCodec *c);
+AVCodec * av_format_get_data_codec(const AVFormatContext *s);
+void      av_format_set_data_codec(AVFormatContext *s, AVCodec *c);
 int       av_format_get_metadata_header_padding(const AVFormatContext *s);
 void      av_format_set_metadata_header_padding(AVFormatContext *s, int c);
 void *    av_format_get_opaque(const AVFormatContext *s);

libavformat/format.c

@@ -151,6 +151,8 @@ enum AVCodecID av_guess_codec(AVOutputFormat *fmt, const char *short_name,
         return fmt->audio_codec;
     else if (type == AVMEDIA_TYPE_SUBTITLE)
         return fmt->subtitle_codec;
+    else if (type == AVMEDIA_TYPE_DATA)
+        return fmt->data_codec;
     else
         return AV_CODEC_ID_NONE;
 }

libavformat/utils.c

@@ -110,6 +110,7 @@ MAKE_ACCESSORS(AVStream, stream, char *, recommended_encoder_configuration)
 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, video_codec)
 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, audio_codec)
 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, subtitle_codec)
+MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, data_codec)
 MAKE_ACCESSORS(AVFormatContext, format, int, metadata_header_padding)
 MAKE_ACCESSORS(AVFormatContext, format, void *, opaque)
 MAKE_ACCESSORS(AVFormatContext, format, av_format_control_message, control_message_cb)

libavformat/version.h

@@ -30,8 +30,8 @@
 #include "libavutil/version.h"
 
 #define LIBAVFORMAT_VERSION_MAJOR 56
-#define LIBAVFORMAT_VERSION_MINOR  18
+#define LIBAVFORMAT_VERSION_MINOR  19
-#define LIBAVFORMAT_VERSION_MICRO 101
+#define LIBAVFORMAT_VERSION_MICRO 100
 
 #define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \
                                                LIBAVFORMAT_VERSION_MINOR, \