lavf,lavc,sws: add {avcodec,avformat,sws}_get_class() functions.

doc/APIchanges

@@ -13,6 +13,11 @@ libavutil:   2011-04-18
 
 API changes, most recent first:
 
+2011-08-xx - xxxxxxx - lavc 53.10.0
+                       lavf 53.6.0
+                       lsws  2.1.0
+  Add {avcodec,avformat,sws}_get_class().
+
 2011-08-xx - xxxxxxx - lavu 51.10.0
   Add AV_OPT_SEARCH_FAKE_OBJ flag for av_opt_find() function.
 

libavcodec/avcodec.h

@@ -4306,4 +4306,12 @@ int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op));
  */
 enum AVMediaType avcodec_get_type(enum CodecID codec_id);
 
+/**
+ * Get the AVClass for AVCodecContext. It can be used in combination with
+ * AV_OPT_SEARCH_FAKE_OBJ for examining options.
+ *
+ * @see av_opt_find().
+ */
+const AVClass *avcodec_get_class(void);
+
 #endif /* AVCODEC_AVCODEC_H */

libavcodec/options.c

@@ -662,3 +662,8 @@ fail:
     av_freep(&dest->rc_eq);
     return AVERROR(ENOMEM);
 }
+
+const AVClass *avcodec_get_class(void)
+{
+    return &av_codec_context_class;
+}

libavcodec/version.h

@@ -21,7 +21,7 @@
 #define AVCODEC_VERSION_H
 
 #define LIBAVCODEC_VERSION_MAJOR 53
-#define LIBAVCODEC_VERSION_MINOR  9
+#define LIBAVCODEC_VERSION_MINOR  10
 #define LIBAVCODEC_VERSION_MICRO  0
 
 #define LIBAVCODEC_VERSION_INT  AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \

libavformat/avformat.h

@@ -1613,4 +1613,12 @@ int av_match_ext(const char *filename, const char *extensions);
  */
 int avformat_query_codec(AVOutputFormat *ofmt, enum CodecID codec_id, int std_compliance);
 
+/**
+ * Get the AVClass for AVFormatContext. It can be used in combination with
+ * AV_OPT_SEARCH_FAKE_OBJ for examining options.
+ *
+ * @see av_opt_find().
+ */
+const AVClass *avformat_get_class(void);
+
 #endif /* AVFORMAT_AVFORMAT_H */

libavformat/options.c

@@ -123,3 +123,8 @@ AVFormatContext *avformat_alloc_context(void)
     avformat_get_context_defaults(ic);
     return ic;
 }
+
+const AVClass *avformat_get_class(void)
+{
+    return &av_format_context_class;
+}

libavformat/version.h

@@ -24,7 +24,7 @@
 #include "libavutil/avutil.h"
 
 #define LIBAVFORMAT_VERSION_MAJOR 53
-#define LIBAVFORMAT_VERSION_MINOR  5
+#define LIBAVFORMAT_VERSION_MINOR  6
 #define LIBAVFORMAT_VERSION_MICRO  0
 
 #define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \

libswscale/options.c

@@ -67,3 +67,8 @@ static const AVOption options[] = {
 };
 
 const AVClass sws_context_class = { "SWScaler", sws_context_to_name, options };
+
+const AVClass *sws_get_class(void)
+{
+    return &sws_context_class;
+}

libswscale/swscale.h

@@ -32,7 +32,7 @@
 #include "libavutil/pixfmt.h"
 
 #define LIBSWSCALE_VERSION_MAJOR 2
-#define LIBSWSCALE_VERSION_MINOR 0
+#define LIBSWSCALE_VERSION_MINOR 1
 #define LIBSWSCALE_VERSION_MICRO 0
 
 #define LIBSWSCALE_VERSION_INT  AV_VERSION_INT(LIBSWSCALE_VERSION_MAJOR, \
@@ -351,5 +351,12 @@ void sws_convertPalette8ToPacked32(const uint8_t *src, uint8_t *dst, int num_pix
  */
 void sws_convertPalette8ToPacked24(const uint8_t *src, uint8_t *dst, int num_pixels, const uint8_t *palette);
 
+/**
+ * Get the AVClass for swsContext. It can be used in combination with
+ * AV_OPT_SEARCH_FAKE_OBJ for examining options.
+ *
+ * @see av_opt_find().
+ */
+const AVClass *sws_get_class(void);
 
 #endif /* SWSCALE_SWSCALE_H */