avformat: add an LCEVC stream group

Signed-off-by: James Almer <jamrial@gmail.com>

1 files changed, 27 insertions, 0 deletions

diff --git a/libavformat/avformat.h b/libavformat/avformat.h
index 4a3fb00529..56c1c80289 100644
--- a/libavformat/avformat.h
+++ b/libavformat/avformat.h
@@ -1084,11 +1084,37 @@ typedef struct AVStreamGroupTileGrid {
     int height;
 } AVStreamGroupTileGrid;
 
+/**
+ * AVStreamGroupLCEVC is meant to define the relation between video streams
+ * and a data stream containing LCEVC enhancement layer NALUs.
+ *
+ * No more than one stream of @ref AVCodecParameters.codec_type "codec_type"
+ * AVMEDIA_TYPE_DATA shall be present, and it must be of
+ * @ref AVCodecParameters.codec_id "codec_id" AV_CODEC_ID_LCEVC.
+ */
+typedef struct AVStreamGroupLCEVC {
+    const AVClass *av_class;
+
+    /**
+     * Index of the LCEVC data stream in AVStreamGroup.
+     */
+    unsigned int lcevc_index;
+    /**
+     * Width of the final stream for presentation.
+     */
+    int width;
+    /**
+     * Height of the final image for presentation.
+     */
+    int height;
+} AVStreamGroupLCEVC;
+
 enum AVStreamGroupParamsType {
     AV_STREAM_GROUP_PARAMS_NONE,
     AV_STREAM_GROUP_PARAMS_IAMF_AUDIO_ELEMENT,
     AV_STREAM_GROUP_PARAMS_IAMF_MIX_PRESENTATION,
     AV_STREAM_GROUP_PARAMS_TILE_GRID,
+    AV_STREAM_GROUP_PARAMS_LCEVC,
 };
 
 struct AVIAMFAudioElement;
@@ -1130,6 +1156,7 @@ typedef struct AVStreamGroup {
         struct AVIAMFAudioElement *iamf_audio_element;
         struct AVIAMFMixPresentation *iamf_mix_presentation;
         struct AVStreamGroupTileGrid *tile_grid;
+        struct AVStreamGroupLCEVC *lcevc;
     } params;
 
     /**