[FFmpeg-devel] [PATCH] Pass the HDR10+ metadata to the packet side data in VP9 encoder
Mohammad Izadi
izadi at google.com
Tue May 25 01:22:43 EEST 2021
Any more comments or looks good to go?
Thanks,
Mohammad
On Mon, Apr 26, 2021 at 6:54 PM Mohammad Izadi <izadi at google.com> wrote:
> 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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