Merge commit '5f30ac27795f9f98043e8582ccaad8813104adc4'

* commit '5f30ac27795f9f98043e8582ccaad8813104adc4':
  lavc: deprecate avcodec_copy_context()

Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>

libavcodec/avcodec.h

@@ -4147,6 +4147,7 @@ int avcodec_get_context_defaults3(AVCodecContext *s, const AVCodec *codec);
  */
 const AVClass *avcodec_get_class(void);
 
+#if FF_API_COPY_CONTEXT
 /**
  * Get the AVClass for AVFrame. It can be used in combination with
  * AV_OPT_SEARCH_FAKE_OBJ for examining options.
@@ -4173,8 +4174,16 @@ const AVClass *avcodec_get_subtitle_rect_class(void);
  *             avcodec_alloc_context3(NULL), but otherwise uninitialized
  * @param src source codec context
  * @return AVERROR() on error (e.g. memory allocation error), 0 on success
+ *
+ * @deprecated The semantics of this function are ill-defined and it should not
+ * be used. If you need to transfer the stream parameters from one codec context
+ * to another, use an intermediate AVCodecParameters instance and the
+ * avcodec_parameters_from_context() / avcodec_parameters_to_context()
+ * functions.
  */
+attribute_deprecated
 int avcodec_copy_context(AVCodecContext *dest, const AVCodecContext *src);
+#endif
 
 /**
  * Allocate a new AVCodecParameters and set its fields to default values

libavcodec/options.c

@@ -179,6 +179,7 @@ void avcodec_free_context(AVCodecContext **pavctx)
     av_freep(pavctx);
 }
 
+#if FF_API_COPY_CONTEXT
 int avcodec_copy_context(AVCodecContext *dest, const AVCodecContext *src)
 {
     const AVCodec *orig_codec = dest->codec;
@@ -258,6 +259,7 @@ fail:
     av_opt_free(dest);
     return AVERROR(ENOMEM);
 }
+#endif
 
 const AVClass *avcodec_get_class(void)
 {

libavcodec/version.h

@@ -217,6 +217,9 @@
 #ifndef FF_API_OLD_BSF
 #define FF_API_OLD_BSF          (LIBAVCODEC_VERSION_MAJOR < 59)
 #endif
+#ifndef FF_API_COPY_CONTEXT
+#define FF_API_COPY_CONTEXT     (LIBAVCODEC_VERSION_MAJOR < 59)
+#endif
 #ifndef FF_API_NVENC_OLD_NAME
 #define FF_API_NVENC_OLD_NAME    (LIBAVCODEC_VERSION_MAJOR < 59)
 #endif