[FFmpeg-devel] [PATCH 08/10] avcodec/libaomenc: implement dolby vision coding

[Niklas Haas <ffmpeg@haasn.xyz>]

From: Niklas Haas <git@haasn.dev>

---
 libavcodec/libaomenc.c | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/libavcodec/libaomenc.c b/libavcodec/libaomenc.c
index d660afab4ec..6bc46ec6e28 100644
--- a/libavcodec/libaomenc.c
+++ b/libavcodec/libaomenc.c
@@ -43,6 +43,7 @@
 #include "avcodec.h"
 #include "bsf.h"
 #include "codec_internal.h"
+#include "dovi_rpu.h"
 #include "encode.h"
 #include "internal.h"
 #include "libaom.h"
@@ -70,6 +71,7 @@ struct FrameListData {
 typedef struct AOMEncoderContext {
     AVClass *class;
     AVBSFContext *bsf;
+    DOVIContext dovi;
     struct aom_codec_ctx encoder;
     struct aom_image rawimg;
     struct aom_fixed_buf twopass_stats;
@@ -437,6 +439,7 @@ static av_cold int aom_free(AVCodecContext *avctx)
     av_freep(&avctx->stats_out);
     free_frame_list(ctx->coded_frame_list);
     av_bsf_free(&ctx->bsf);
+    ff_dovi_ctx_unref(&ctx->dovi);
     return 0;
 }
 
@@ -1023,6 +1026,10 @@ static av_cold int aom_init(AVCodecContext *avctx,
     if (!cpb_props)
         return AVERROR(ENOMEM);
 
+    ctx->dovi.logctx = avctx;
+    if ((res = ff_dovi_configure(&ctx->dovi, avctx)) < 0)
+        return res;
+
     if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER) {
         const AVBitStreamFilter *filter = av_bsf_get_by_name("extract_extradata");
         int ret;
@@ -1282,6 +1289,7 @@ static int aom_encode(AVCodecContext *avctx, AVPacket *pkt,
     unsigned long duration = 0;
     int res, coded_size;
     aom_enc_frame_flags_t flags = 0;
+    AVFrameSideData *sd;
 
     if (frame) {
         rawimg                      = &ctx->rawimg;
@@ -1319,6 +1327,24 @@ FF_ENABLE_DEPRECATION_WARNINGS
             break;
         }
 
+        sd = av_frame_get_side_data(frame, AV_FRAME_DATA_DOVI_METADATA);
+        if (ctx->dovi.cfg.dv_profile && sd) {
+            const AVDOVIMetadata *metadata = (const AVDOVIMetadata *)sd->data;
+            uint8_t *t35;
+            int size;
+            if ((res = ff_dovi_rpu_generate(&ctx->dovi, metadata, &t35, &size)) < 0)
+                return res;
+            res = aom_img_add_metadata(rawimg, OBU_METADATA_TYPE_ITUT_T35,
+                                       t35, size, AOM_MIF_ANY_FRAME);
+            av_free(t35);
+            if (res != AOM_CODEC_OK)
+                return AVERROR(ENOMEM);
+        } else if (ctx->dovi.cfg.dv_profile) {
+            av_log(avctx, AV_LOG_ERROR, "Dolby Vision enabled, but received frame "
+                   "without AV_FRAME_DATA_DOVI_METADATA");
+            return AVERROR_INVALIDDATA;
+        }
+
         if (frame->pict_type == AV_PICTURE_TYPE_I)
             flags |= AOM_EFLAG_FORCE_KF;
     }
-- 
2.44.0

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