[FFmpeg-devel] [PATCH 08/11] avcodec/hevcdec: check for DOVI configuration record in AVCodecContext side data

[James Almer]

Signed-off-by: James Almer <jamrial at gmail.com>
---
 libavcodec/avcodec.h |  2 +-
 libavcodec/decode.c  | 10 ++++++++++
 libavcodec/decode.h  |  6 ++++++
 libavcodec/hevcdec.c | 15 ++++++++++++++-
 4 files changed, 31 insertions(+), 2 deletions(-)

diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index 09400b97b0..42b34ee89a 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -1907,7 +1907,7 @@ typedef struct AVCodecContext {
     /**
      * Additional data associated with the entire coded stream.
      *
-     * - decoding: unused
+     * - decoding: may be set by user before calling avcodec_open2().
      * - encoding: may be set by libavcodec after avcodec_open2().
      */
     AVPacketSideData *coded_side_data;
diff --git a/libavcodec/decode.c b/libavcodec/decode.c
index 8f94678e9b..d81c418e10 100644
--- a/libavcodec/decode.c
+++ b/libavcodec/decode.c
@@ -1403,6 +1403,16 @@ int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
     return ret;
 }
 
+const AVPacketSideData *ff_get_coded_side_data(const AVCodecContext *avctx,
+                                               enum AVPacketSideDataType type)
+{
+    for (int i = 0; i < avctx->nb_coded_side_data; i++)
+        if (avctx->coded_side_data[i].type == type)
+            return &avctx->coded_side_data[i];
+
+    return NULL;
+}
+
 static int add_metadata_from_side_data(const AVPacket *avpkt, AVFrame *frame)
 {
     size_t size;
diff --git a/libavcodec/decode.h b/libavcodec/decode.h
index a52152e4a7..be03c136e7 100644
--- a/libavcodec/decode.h
+++ b/libavcodec/decode.h
@@ -153,4 +153,10 @@ int ff_side_data_update_matrix_encoding(AVFrame *frame,
 int ff_hwaccel_frame_priv_alloc(AVCodecContext *avctx, void **hwaccel_picture_private,
                                 AVBufferRef **hwaccel_priv_buf);
 
+/**
+ * Get side data of the given type from a decoding context.
+ */
+const AVPacketSideData *ff_get_coded_side_data(const AVCodecContext *avctx,
+                                               enum AVPacketSideDataType type);
+
 #endif /* AVCODEC_DECODE_H */
diff --git a/libavcodec/hevcdec.c b/libavcodec/hevcdec.c
index 2be62ddfb2..5acaa407dd 100644
--- a/libavcodec/hevcdec.c
+++ b/libavcodec/hevcdec.c
@@ -3343,8 +3343,15 @@ static int hevc_decode_frame(AVCodecContext *avctx, AVFrame *rframe,
     }
 
     sd = av_packet_get_side_data(avpkt, AV_PKT_DATA_DOVI_CONF, &sd_size);
-    if (sd && sd_size > 0)
+    if (sd && sd_size > 0) {
+        int old = s->dovi_ctx.dv_profile;
+
         ff_dovi_update_cfg(&s->dovi_ctx, (AVDOVIDecoderConfigurationRecord *) sd);
+        if (old)
+            av_log(avctx, AV_LOG_DEBUG,
+                   "New DOVI configuration record from input packet (profile %d -> %u).\n",
+                   old, s->dovi_ctx.dv_profile);
+    }
 
     s->ref = NULL;
     ret    = decode_nal_units(s, avpkt->data, avpkt->size);
@@ -3649,12 +3656,18 @@ static av_cold int hevc_decode_init(AVCodecContext *avctx)
     atomic_init(&s->wpp_err, 0);
 
     if (!avctx->internal->is_copy) {
+        const AVPacketSideData *sd;
+
         if (avctx->extradata_size > 0 && avctx->extradata) {
             ret = hevc_decode_extradata(s, avctx->extradata, avctx->extradata_size, 1);
             if (ret < 0) {
                 return ret;
             }
         }
+
+        sd = ff_get_coded_side_data(avctx, AV_PKT_DATA_DOVI_CONF);
+        if (sd && sd->size > 0)
+            ff_dovi_update_cfg(&s->dovi_ctx, (AVDOVIDecoderConfigurationRecord *) sd->data);
     }
 
     return 0;
-- 
2.42.0