avcodec: add frame side data array to AVCodecContext

This allows configuring an encoder by using AVFrameSideData.

doc/APIchanges

@@ -2,6 +2,9 @@ The last version increases of all libraries were on 2024-03-07
 
 API changes, most recent first:
 
+2024-03-xx - xxxxxxxxxx - lavc 61.2.100 - avcodec.h
+  Add AVCodecContext.[nb_]decoded_side_data.
+
 2024-03-xx - xxxxxxxxxx - lavu 59.3.100 - frame.h
   Add av_frame_side_data_free(), av_frame_side_data_new(),
   av_frame_side_data_clone(), av_frame_side_data_get() as well

libavcodec/avcodec.h

@@ -2062,6 +2062,19 @@ typedef struct AVCodecContext {
      * Number of entries in side_data_prefer_packet.
      */
     unsigned nb_side_data_prefer_packet;
+
+    /**
+     * Array containing static side data, such as HDR10 CLL / MDCV structures.
+     * Side data entries should be allocated by usage of helpers defined in
+     * libavutil/frame.h.
+     *
+     * - encoding: may be set by user before calling avcodec_open2() for
+     *             encoder configuration. Afterwards owned and freed by the
+     *             encoder.
+     * - decoding: unused
+     */
+    AVFrameSideData  **decoded_side_data;
+    int             nb_decoded_side_data;
 } AVCodecContext;
 
 /**

libavcodec/options.c

@@ -176,6 +176,8 @@ void avcodec_free_context(AVCodecContext **pavctx)
     av_freep(&avctx->inter_matrix);
     av_freep(&avctx->rc_override);
     av_channel_layout_uninit(&avctx->ch_layout);
+    av_frame_side_data_free(
+        &avctx->decoded_side_data, &avctx->nb_decoded_side_data);
 
     av_freep(pavctx);
 }

libavcodec/version.h

@@ -29,8 +29,8 @@
 
 #include "version_major.h"
 
-#define LIBAVCODEC_VERSION_MINOR   1
-#define LIBAVCODEC_VERSION_MICRO 101
+#define LIBAVCODEC_VERSION_MINOR   2
+#define LIBAVCODEC_VERSION_MICRO 100
 
 #define LIBAVCODEC_VERSION_INT  AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
                                                LIBAVCODEC_VERSION_MINOR, \