[FFmpeg-devel] [PATCH] avcodec/nvenc: add support for writing mastering metadata SEI messages
James Almer
jamrial at gmail.com
Tue Feb 4 18:30:33 EET 2025
Including Mastering Display and Content Light Level.
Requires SDK 13.0, and only supports HEVC and AV1.
Signed-off-by: James Almer <jamrial at gmail.com>
---
libavcodec/nvenc.c | 82 ++++++++++++++++++++++++++++++++++++++++++++++
libavcodec/nvenc.h | 2 ++
2 files changed, 84 insertions(+)
diff --git a/libavcodec/nvenc.c b/libavcodec/nvenc.c
index 1f6b670c1b..9780fc712c 100644
--- a/libavcodec/nvenc.c
+++ b/libavcodec/nvenc.c
@@ -35,6 +35,7 @@
#include "libavutil/mem.h"
#include "libavutil/pixdesc.h"
#include "libavutil/mathematics.h"
+#include "libavutil/mastering_display_metadata.h"
#include "atsc_a53.h"
#include "codec_desc.h"
#include "encode.h"
@@ -1470,6 +1471,15 @@ static av_cold int nvenc_setup_hevc_config(AVCodecContext *avctx)
#endif
}
+#ifdef NVENC_HAVE_HEVC_AND_AV1_MASTERING_METADATA
+ ctx->mdm = hevc->outputMasteringDisplay = !!av_frame_side_data_get(avctx->decoded_side_data,
+ avctx->nb_decoded_side_data,
+ AV_FRAME_DATA_MASTERING_DISPLAY_METADATA);
+ ctx->cll = hevc->outputMaxCll = !!av_frame_side_data_get(avctx->decoded_side_data,
+ avctx->nb_decoded_side_data,
+ AV_FRAME_DATA_CONTENT_LIGHT_LEVEL);
+#endif
+
#ifdef NVENC_HAVE_HEVC_CONSTRAINED_ENCODING
if (ctx->constrained_encoding)
hevc->enableConstrainedEncoding = 1;
@@ -1638,6 +1648,15 @@ static av_cold int nvenc_setup_av1_config(AVCodecContext *avctx)
av1->pixelBitDepthMinus8 = (IS_10BIT(ctx->data_pix_fmt) || ctx->highbitdepth) ? 2 : 0;
#endif
+#ifdef NVENC_HAVE_HEVC_AND_AV1_MASTERING_METADATA
+ ctx->mdm = av1->outputMasteringDisplay = !!av_frame_side_data_get(avctx->decoded_side_data,
+ avctx->nb_decoded_side_data,
+ AV_FRAME_DATA_MASTERING_DISPLAY_METADATA);
+ ctx->cll = av1->outputMaxCll = !!av_frame_side_data_get(avctx->decoded_side_data,
+ avctx->nb_decoded_side_data,
+ AV_FRAME_DATA_CONTENT_LIGHT_LEVEL);
+#endif
+
if (ctx->b_ref_mode >= 0)
av1->useBFramesAsRef = ctx->b_ref_mode;
@@ -2892,6 +2911,10 @@ static int nvenc_send_frame(AVCodecContext *avctx, const AVFrame *frame)
int res, res2;
int sei_count = 0;
int i;
+#ifdef NVENC_HAVE_HEVC_AND_AV1_MASTERING_METADATA
+ MASTERING_DISPLAY_INFO mastering_disp_info = { 0 };
+ CONTENT_LIGHT_LEVEL content_light_level = { 0 };
+#endif
NvencContext *ctx = avctx->priv_data;
NvencDynLoadFunctions *dl_fn = &ctx->nvenc_dload_funcs;
@@ -2956,6 +2979,65 @@ static int nvenc_send_frame(AVCodecContext *avctx, const AVFrame *frame)
sei_count = res;
}
+#ifdef NVENC_HAVE_HEVC_AND_AV1_MASTERING_METADATA
+ if (ctx->mdm || ctx->cll) {
+ const AVFrameSideData *sd_mdm = av_frame_get_side_data(frame, AV_FRAME_DATA_MASTERING_DISPLAY_METADATA);
+ const AVFrameSideData *sd_cll = av_frame_get_side_data(frame, AV_FRAME_DATA_CONTENT_LIGHT_LEVEL);
+ const int chroma_den = (avctx->codec->id == AV_CODEC_ID_AV1) ? 1 << 16 : 50000;
+ const int max_luma_den = (avctx->codec->id == AV_CODEC_ID_AV1) ? 1 << 8 : 10000;
+ const int min_luma_den = (avctx->codec->id == AV_CODEC_ID_AV1) ? 1 << 14 : 10000;
+
+ if (!sd_mdm)
+ sd_mdm = av_frame_side_data_get(avctx->decoded_side_data,
+ avctx->nb_decoded_side_data,
+ AV_FRAME_DATA_MASTERING_DISPLAY_METADATA);
+ if (!sd_cll)
+ sd_cll = av_frame_side_data_get(avctx->decoded_side_data,
+ avctx->nb_decoded_side_data,
+ AV_FRAME_DATA_CONTENT_LIGHT_LEVEL);
+
+ if (sd_mdm) {
+ const AVMasteringDisplayMetadata *mdm = (AVMasteringDisplayMetadata *)sd_mdm->data;
+
+ mastering_disp_info.r.x = av_rescale(mdm->display_primaries[0][0].num, chroma_den,
+ mdm->display_primaries[0][0].den);
+ mastering_disp_info.r.y = av_rescale(mdm->display_primaries[0][1].num, chroma_den,
+ mdm->display_primaries[0][1].den);
+ mastering_disp_info.g.x = av_rescale(mdm->display_primaries[1][0].num, chroma_den,
+ mdm->display_primaries[1][0].den);
+ mastering_disp_info.g.y = av_rescale(mdm->display_primaries[1][1].num, chroma_den,
+ mdm->display_primaries[1][1].den);
+ mastering_disp_info.b.x = av_rescale(mdm->display_primaries[2][0].num, chroma_den,
+ mdm->display_primaries[2][0].den);
+ mastering_disp_info.b.y = av_rescale(mdm->display_primaries[2][1].num, chroma_den,
+ mdm->display_primaries[2][1].den);
+ mastering_disp_info.whitePoint.x = av_rescale(mdm->white_point[0].num, chroma_den,
+ mdm->white_point[0].den);
+ mastering_disp_info.whitePoint.y = av_rescale(mdm->white_point[1].num, chroma_den,
+ mdm->white_point[1].den);
+ mastering_disp_info.maxLuma = av_rescale(mdm->max_luminance.num, max_luma_den,
+ mdm->max_luminance.den);
+ mastering_disp_info.minLuma = av_rescale(mdm->min_luminance.num, min_luma_den,
+ mdm->min_luminance.den);
+
+ if (avctx->codec->id == AV_CODEC_ID_HEVC)
+ pic_params.codecPicParams.hevcPicParams.pMasteringDisplay = &mastering_disp_info;
+ else
+ pic_params.codecPicParams.av1PicParams.pMasteringDisplay = &mastering_disp_info;
+ }
+ if (sd_cll) {
+ const AVContentLightMetadata *cll = (AVContentLightMetadata *)sd_cll->data;
+
+ content_light_level.maxContentLightLevel = cll->MaxCLL;
+ content_light_level.maxPicAverageLightLevel = cll->MaxFALL;
+
+ if (avctx->codec->id == AV_CODEC_ID_HEVC)
+ pic_params.codecPicParams.hevcPicParams.pMaxCll = &content_light_level;
+ else
+ pic_params.codecPicParams.av1PicParams.pMaxCll = &content_light_level;
+ }
+ }
+#endif
res = nvenc_store_frame_data(avctx, &pic_params, frame);
if (res < 0)
return res;
diff --git a/libavcodec/nvenc.h b/libavcodec/nvenc.h
index 55a95f8399..dbd18cac12 100644
--- a/libavcodec/nvenc.h
+++ b/libavcodec/nvenc.h
@@ -104,6 +104,7 @@ typedef void ID3D11Device;
#define NVENC_HAVE_422_SUPPORT
#define NVENC_HAVE_AV1_UHQ_TUNING
#define NVENC_HAVE_H264_AND_AV1_TEMPORAL_FILTER
+#define NVENC_HAVE_HEVC_AND_AV1_MASTERING_METADATA
#endif
typedef struct NvencSurface
@@ -306,6 +307,7 @@ typedef struct NvencContext
int lookahead_level;
int unidir_b;
int split_encode_mode;
+ int mdm, cll;
} NvencContext;
int ff_nvenc_encode_init(AVCodecContext *avctx);
--
2.48.1
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