Take advantage of per-channel exponent and exponent strategy layout to

[ffmpeg] / libavformat / avformat.h

diff --git a/libavformat/avformat.h b/libavformat/avformat.h
index 1e878819d0ad4c7e21c1950139561b1b9e079e1c..919933ff688ed9d020c85e2b53d803a6b1bca76b 100644 (file)
--- a/libavformat/avformat.h
+++ b/libavformat/avformat.h
@@ -22,7 +22,7 @@
 #define AVFORMAT_AVFORMAT_H
 
 #define LIBAVFORMAT_VERSION_MAJOR 52
-#define LIBAVFORMAT_VERSION_MINOR 89
+#define LIBAVFORMAT_VERSION_MINOR 93
 #define LIBAVFORMAT_VERSION_MICRO  0
 
 #define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \
@@ -226,6 +226,16 @@ attribute_deprecated void av_metadata_conv(struct AVFormatContext *ctx, const AV
                                                                         const AVMetadataConv *s_conv);
 #endif
 
+/**
+ * Copy metadata from one AVMetadata struct into another.
+ * @param dst pointer to a pointer to a AVMetadata struct. If *dst is NULL,
+ *            this function will allocate a struct for you and put it in *dst
+ * @param src pointer to source AVMetadata struct
+ * @param flags flags to use when setting metadata in *dst
+ * @note metadata is read using the AV_METADATA_IGNORE_SUFFIX flag
+ */
+void av_metadata_copy(AVMetadata **dst, AVMetadata *src, int flags);
+
 /**
  * Free all the memory allocated for an AVMetadata struct.
  */
@@ -323,6 +333,7 @@ typedef struct AVFormatParameters {
 #define AVFMT_TS_DISCONT    0x0200 /**< Format allows timestamp discontinuities. Note, muxers always require valid (monotone) timestamps */
 #define AVFMT_VARIABLE_FPS  0x0400 /**< Format allows variable fps. */
 #define AVFMT_NODIMENSIONS  0x0800 /**< Format does not need width/height */
+#define AVFMT_NOSTREAMS     0x1000 /**< Format does not require any streams */
 
 typedef struct AVOutputFormat {
     const char *name;
@@ -367,6 +378,8 @@ typedef struct AVOutputFormat {
     const AVMetadataConv *metadata_conv;
 #endif
 
+    const AVClass *priv_class; ///< AVClass for the private context
+
     /* private fields */
     struct AVOutputFormat *next;
 } AVOutputFormat;
@@ -1139,6 +1152,37 @@ AVFormatContext *avformat_alloc_context(void);
  */
 int av_find_stream_info(AVFormatContext *ic);
 
+/**
+ * Find the "best" stream in the file.
+ * The best stream is determined according to various heuristics as the most
+ * likely to be what the user expects.
+ * If the decoder parameter is non-NULL, av_find_best_stream will find the
+ * default decoder for the stream's codec; streams for which no decoder can
+ * be found are ignored.
+ *
+ * @param ic                media file handle
+ * @param type              stream type: video, audio, subtitles, etc.
+ * @param wanted_stream_nb  user-requested stream number,
+ *                          or -1 for automatic selection
+ * @param related_stream    try to find a stream related (eg. in the same
+ *                          program) to this one, or -1 if none
+ * @param decoder_ret       if non-NULL, returns the decoder for the
+ *                          selected stream
+ * @param flags             flags; none are currently defined
+ * @return  the non-negative stream number in case of success,
+ *          AVERROR_STREAM_NOT_FOUND if no stream with the requested type
+ *          could be found,
+ *          AVERROR_DECODER_NOT_FOUND if streams were found but no decoder
+ * @note  If av_find_best_stream returns successfully and decoder_ret is not
+ *        NULL, then *decoder_ret is guaranteed to be set to a valid AVCodec.
+ */
+int av_find_best_stream(AVFormatContext *ic,
+                        enum AVMediaType type,
+                        int wanted_stream_nb,
+                        int related_stream,
+                        AVCodec **decoder_ret,
+                        int flags);
+
 /**
  * Read a transport packet from a media file.
  *