avcodec: add frame side data array to AVCodecContext

This allows configuring an encoder by using AVFrameSideData.
jeeb · Mar 17, 2024 · 2cba6c0 · 2cba6c0
1 parent f4224b0
commit 2cba6c0
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diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
@@ -2062,6 +2062,18 @@ 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.
+     * - decoding: unused
+     */
+    AVFrameSideData  **encoder_side_data;
+    int             nb_encoder_side_data;
 } AVCodecContext;
 
 /**

diff --git a/libavcodec/options.c b/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->encoder_side_data, &avctx->nb_encoder_side_data);
 
     av_freep(pavctx);
 }