HDR10+ metadata is stored in the bit stream for HEVC. The story is different
for VP9 and cannot store the metadata in the bit stream. HDR10+ should be
passed to packet side data an stored in the container (mkv) for VP9.
This CL is taking HDR10+ from AVFrame side data in libvpxenc and is passing it
to the AVPacket side data.
---
libavcodec/avpacket.c | 1 +
libavcodec/decode.c | 1 +
libavcodec/libvpxenc.c | 88 +++++++++++++++++++++++++++++++++++++++++-
libavcodec/packet.h | 8 ++++
4 files changed, 96 insertions(+), 2 deletions(-)
diff --git a/libavcodec/avpacket.c b/libavcodec/avpacket.c
index b5bac5c5f2..7a3b0a73e3 100644
--- a/libavcodec/avpacket.c
+++ b/libavcodec/avpacket.c
@@ -416,6 +416,7 @@ const char *av_packet_side_data_name(enum
AVPacketSideDataType type)
case AV_PKT_DATA_ICC_PROFILE: return "ICC Profile";
case AV_PKT_DATA_DOVI_CONF: return "DOVI configuration
record";
case AV_PKT_DATA_S12M_TIMECODE: return "SMPTE ST 12-1:2014
timecode";
+ case AV_PKT_DATA_DYNAMIC_HDR10_PLUS: return "HDR10+ Dynamic
Metadata (SMPTE 2094-40)";
}
return NULL;
}
diff --git a/libavcodec/decode.c b/libavcodec/decode.c
index 0956a6ac6f..bf5fbcca97 100644
--- a/libavcodec/decode.c
+++ b/libavcodec/decode.c
@@ -1736,6 +1736,7 @@ int ff_decode_frame_props(AVCodecContext *avctx, AVFrame
*frame)
{ AV_PKT_DATA_A53_CC, AV_FRAME_DATA_A53_CC },
{ AV_PKT_DATA_ICC_PROFILE, AV_FRAME_DATA_ICC_PROFILE },
{ AV_PKT_DATA_S12M_TIMECODE, AV_FRAME_DATA_S12M_TIMECODE
},
+ { AV_PKT_DATA_DYNAMIC_HDR10_PLUS,
AV_FRAME_DATA_DYNAMIC_HDR_PLUS },
};
if (IS_EMPTY(pkt) && av_fifo_size(avctx->internal->pkt_props) >=
sizeof(*pkt))
diff --git a/libavcodec/libvpxenc.c b/libavcodec/libvpxenc.c
index 3f36943c12..2096c08437 100644
--- a/libavcodec/libvpxenc.c
+++ b/libavcodec/libvpxenc.c
@@ -63,6 +63,12 @@ struct FrameListData {
struct FrameListData *next;
};
+typedef struct FrameHDR10PlusList {
+ int64_t pts;
+ AVBufferRef *hdr10_plus;
+ struct FrameHDR10PlusList *next;
+} FrameHDR10PlusList;
+
typedef struct VPxEncoderContext {
AVClass *class;
struct vpx_codec_ctx encoder;
@@ -120,6 +126,8 @@ typedef struct VPxEncoderContext {
int tune_content;
int corpus_complexity;
int tpl_model;
+ int discard_hdr10_plus;
+ struct FrameHDR10PlusList *hdr10_plus_list;
/**
* If the driver does not support ROI then warn the first time we
* encounter a frame with ROI side data.
@@ -315,6 +323,53 @@ static av_cold void free_frame_list(struct FrameListData
*list)
}
}
+
+static void add_hdr10_plus(void *list, struct FrameHDR10PlusList *data)
+{
+ struct FrameHDR10PlusList **p = list;
+ while (*p)
+ p = &(*p)->next;
+ *p = data;
+ data->next = NULL;
+}
+
+static av_cold void free_hdr10_plus(struct FrameHDR10PlusList *p)
+{
+ av_buffer_unref(&p->hdr10_plus);
+ av_free(p);
+}
+
+static av_cold void free_hdr10_plus_list(struct FrameHDR10PlusList *list)
+{
+ struct FrameHDR10PlusList *p = list;
+ while (p) {
+ list = list->next;
+ free_hdr10_plus(p);
+ p = list;
+ }
+}
+
+static int copy_hdr10_plus_to_pkt(void *list, AVPacket *pkt)
+{
+ struct FrameHDR10PlusList **p = list;
+ struct FrameHDR10PlusList *head = *p;
+
+ if (head && pkt && head->hdr10_plus && head->pts == pkt->pts) {
+ uint8_t *data;
+ *p = (*p)->next;
+ data = av_packet_new_side_data(pkt, AV_PKT_DATA_DYNAMIC_HDR10_PLUS,
head->hdr10_plus->size);
+
+ if (!data) {
+ free_hdr10_plus(head);
+ return AVERROR(ENOMEM);
+ }
+ memcpy(data, head->hdr10_plus->data, head->hdr10_plus->size);
+ free_hdr10_plus(head);
+
+ }
+ return 0;
+}
+
static av_cold int codecctl_int(AVCodecContext *avctx,
enum vp8e_enc_control_id id, int val)
{
@@ -383,6 +438,7 @@ static av_cold int vpx_free(AVCodecContext *avctx)
av_freep(&ctx->twopass_stats.buf);
av_freep(&avctx->stats_out);
free_frame_list(ctx->coded_frame_list);
+ free_hdr10_plus_list(ctx->hdr10_plus_list);
return 0;
}
@@ -828,6 +884,7 @@ static av_cold int vpx_init(AVCodecContext *avctx,
AVCPBProperties *cpb_props;
int res;
vpx_img_fmt_t img_fmt = VPX_IMG_FMT_I420;
+ ctx->discard_hdr10_plus = 1;
#if CONFIG_LIBVPX_VP9_ENCODER
vpx_codec_caps_t codec_caps = vpx_codec_get_caps(iface);
vpx_svc_extra_cfg_t svc_params;
@@ -850,11 +907,16 @@ static av_cold int vpx_init(AVCodecContext *avctx,
if (avctx->codec_id == AV_CODEC_ID_VP9) {
if (set_pix_fmt(avctx, codec_caps, &enccfg, &flags, &img_fmt))
return AVERROR(EINVAL);
+ // Keep HDR10+ if it has bit depth higher than 8 and
+ // it has PQ trc (SMPTE2084).
+ if (enccfg.g_bit_depth > 8 && avctx->color_trc == AVCOL_TRC_SMPTE2084)
{
+ ctx->discard_hdr10_plus = 0;
+ }
}
#endif
- if(!avctx->bit_rate)
- if(avctx->rc_max_rate || avctx->rc_buffer_size ||
avctx->rc_initial_buffer_occupancy) {
+ if (!avctx->bit_rate)
+ if (avctx->rc_max_rate || avctx->rc_buffer_size ||
avctx->rc_initial_buffer_occupancy) {
av_log( avctx, AV_LOG_ERROR, "Rate control parameters set without
a bitrate\n");
return AVERROR(EINVAL);
}
@@ -1245,6 +1307,14 @@ FF_ENABLE_DEPRECATION_WARNINGS
AV_WB64(side_data, 1);
memcpy(side_data + 8, cx_frame->buf_alpha, cx_frame->sz_alpha);
}
+ if (cx_frame->frame_number != -1) {
+ VPxContext *ctx = avctx->priv_data;
+ if (!ctx->discard_hdr10_plus) {
+ int err = copy_hdr10_plus_to_pkt(&ctx->hdr10_plus_list, pkt);
+ if (err < 0)
+ return err;
+ }
+ }
} else {
return ret;
}
@@ -1579,6 +1649,7 @@ static int vpx_encode(AVCodecContext *avctx, AVPacket
*pkt,
const struct vpx_codec_enc_cfg *enccfg = ctx->encoder.config.enc;
vpx_svc_layer_id_t layer_id;
int layer_id_valid = 0;
+ AVFrameSideData *hdr10_plus_metadata;
if (frame) {
const AVFrameSideData *sd = av_frame_get_side_data(frame,
AV_FRAME_DATA_REGIONS_OF_INTEREST);
@@ -1655,6 +1726,19 @@ static int vpx_encode(AVCodecContext *avctx, AVPacket
*pkt,
vp9_encode_set_roi(avctx, frame->width, frame->height, sd);
}
}
+
+ if (!ctx->discard_hdr10_plus) {
+ // Add HDR10+ metadata to queue.
+ hdr10_plus_metadata = av_frame_get_side_data(frame,
AV_FRAME_DATA_DYNAMIC_HDR_PLUS);
+ if (hdr10_plus_metadata) {
+ struct FrameHDR10PlusList *data = av_malloc(sizeof(*data));
+ if (!data)
+ return AVERROR(ENOMEM);
+ data->pts = frame->pts;
+ data->hdr10_plus = av_buffer_ref(hdr10_plus_metadata->buf);
+ add_hdr10_plus(&ctx->hdr10_plus_list, data);
+ }
+ }
}
// this is for encoding with preset temporal layering patterns defined in
diff --git a/libavcodec/packet.h b/libavcodec/packet.h
index ca18ae631f..23a146ea7b 100644
--- a/libavcodec/packet.h
+++ b/libavcodec/packet.h
@@ -290,6 +290,14 @@ enum AVPacketSideDataType {
*/
AV_PKT_DATA_S12M_TIMECODE,
+ /**
+ * HDR10+ dynamic metadata associated with a video frame. The metadata is
in
+ * the form of the AVDynamicHDRPlus struct and contains
+ * information for color volume transform - application 4 of
+ * SPMTE 2094-40:2016 standard.
+ */
+ AV_PKT_DATA_DYNAMIC_HDR10_PLUS,
+
/**
* The number of side data types.
* This is not part of the public API/ABI in the sense that it may
--
2.31.1.498.g6c1eba8ee3d-goog
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