[FFmpeg-devel] [PATCH 4/5] avcodec/qsvdec: Implement SEI parsing for QSV decoders
Xiang, Haihao
haihao.xiang at intel.com
Wed Dec 29 08:26:45 EET 2021
On Mon, 2021-11-29 at 18:51 +0000, Soft Works wrote:
> Signed-off-by: softworkz <softworkz at hotmail.com>
> ---
> libavcodec/qsvdec.c | 210 ++++++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 210 insertions(+)
>
> diff --git a/libavcodec/qsvdec.c b/libavcodec/qsvdec.c
> index 8bce9f2cf0..62f3e65455 100644
> --- a/libavcodec/qsvdec.c
> +++ b/libavcodec/qsvdec.c
> @@ -45,6 +45,12 @@
> #include "hwconfig.h"
> #include "qsv.h"
> #include "qsv_internal.h"
> +#include "h264dec.h"
> +#include "h264_sei.h"
> +#include "hevcdec.h"
> +#include "hevc_ps.h"
> +#include "hevc_sei.h"
> +#include "mpeg12.h"
>
> static const AVRational mfx_tb = { 1, 90000 };
>
> @@ -92,6 +98,8 @@ typedef struct QSVContext {
>
> mfxExtBuffer **ext_buffers;
> int nb_ext_buffers;
> +
> + Mpeg1Context mpeg_ctx;
> } QSVContext;
>
> static const AVCodecHWConfigInternal *const qsv_hw_configs[] = {
> @@ -498,6 +506,185 @@ static QSVFrame *find_frame(QSVContext *q,
> mfxFrameSurface1 *surf)
> return NULL;
> }
>
> +static int find_start_offset(mfxU8 data[1024])
> +{
> + if (data[0] == 0 && data[1] == 0 && data[2] == 1)
> + return 3;
> +
> + if (data[0] == 0 && data[1] == 0 && data[2] == 0 && data[3] == 1)
> + return 4;
> +
> + return 0;
> +}
> +
> +static int parse_sei_h264(AVCodecContext* avctx, QSVContext* q, AVFrame* out)
> +{
> + H264SEIContext sei = { 0 };
> + GetBitContext gb = { 0 };
> + mfxU8 data[1024] = { 0 };
> + mfxPayload payload = { 0, .Data = &data[0], .BufSize = sizeof(data) };
> + mfxU64 ts;
> + int ret;
> +
> + while (1) {
> + int start;
> + memset(&data[0], 0, sizeof(data));
> +
> + ret = MFXVideoDECODE_GetPayload(q->session, &ts, &payload);
The *out* frame returned from MFXVideoDECODE_DecodeFrameAsync is in display
order. Does MFXVideoDECODE_GetPayload get payload in display order too ? I
didn't see such description in
https://github.com/Intel-Media-SDK/MediaSDK/blob/master/doc/mediasdk-man.md
Thanks
Haihao
> + if (ret != MFX_ERR_NONE) {
> + av_log(avctx, AV_LOG_WARNING, "error getting SEI payload: %d \n",
> ret);
> + return ret;
> + }
> +
> + if (payload.NumBit == 0 || payload.NumBit >= sizeof(data) * 8) {
> + break;
> + }
> +
> + start = find_start_offset(data);
> +
> + switch (payload.Type) {
> + case SEI_TYPE_BUFFERING_PERIOD:
> + case SEI_TYPE_PIC_TIMING:
> + continue;
> + }
> +
> + if (init_get_bits(&gb, &data[start], payload.NumBit - start * 8) < 0)
> + av_log(avctx, AV_LOG_ERROR, "Error initializing bitstream
> reader");
> + else
> + ret = ff_h264_sei_decode(&sei, &gb, NULL, avctx);
> +
> + if (ret < 0)
> + av_log(avctx, AV_LOG_WARNING, "Error parsing SEI type:
> %d Numbits %d error: %d\n", payload.Type, payload.NumBit, ret);
> + else
> + av_log(avctx, AV_LOG_DEBUG, "mfxPayload Type: %d Numbits %d\n",
> payload.Type, payload.NumBit);
> + }
> +
> + if (out)
> + return ff_h264_export_frame_props(avctx, &sei, NULL, out);
> +
> + return 0;
> +}
> +
> +static int parse_sei_hevc(AVCodecContext* avctx, QSVContext* q, AVFrame* out)
> +{
> + HEVCSEI sei = { 0 };
> + HEVCParamSets ps = { 0 };
> + GetBitContext gb = { 0 };
> + mfxU8 data[1024] = { 0 };
> + mfxPayload payload = { 0, .Data = &data[0], .BufSize = sizeof(data) };
> + mfxU64 ts;
> + int ret;
> +
> + while (1) {
> + int start;
> + memset(&data[0], 0, sizeof(data));
> +
> + ret = MFXVideoDECODE_GetPayload(q->session, &ts, &payload);
> + if (ret != MFX_ERR_NONE) {
> + av_log(avctx, AV_LOG_WARNING, "error getting SEI payload: %d \n",
> ret);
> + return ret;
> + }
> +
> + if (payload.NumBit == 0 || payload.NumBit >= sizeof(data) * 8) {
> + break;
> + }
> +
> + start = find_start_offset(data);
> +
> + switch (payload.Type) {
> + case SEI_TYPE_BUFFERING_PERIOD:
> + case SEI_TYPE_PIC_TIMING:
> + continue;
> + case SEI_TYPE_MASTERING_DISPLAY_COLOUR_VOLUME:
> + case SEI_TYPE_CONTENT_LIGHT_LEVEL_INFO:
> + // There seems to be a bug in MSDK for these
> + payload.NumBit -= 8;
> + break;
> + }
> +
> + if (init_get_bits(&gb, &data[start], payload.NumBit - start * 8) < 0)
> + av_log(avctx, AV_LOG_ERROR, "Error initializing bitstream
> reader");
> + else
> + ret = ff_hevc_decode_nal_sei(&gb, avctx, &sei, &ps,
> HEVC_NAL_SEI_PREFIX);
> +
> + if (ret < 0)
> + av_log(avctx, AV_LOG_WARNING, "error parsing SEI type:
> %d Numbits %d error: %d\n", payload.Type, payload.NumBit, ret);
> + else
> + av_log(avctx, AV_LOG_DEBUG, "mfxPayload Type: %d Numbits %d\n",
> payload.Type, payload.NumBit);
> + }
> +
> + if (out)
> + return ff_set_side_data(avctx, &sei, NULL, out);
> +
> + return 0;
> +}
> +
> +static int parse_sei_mpeg12(AVCodecContext* avctx, QSVContext* q, AVFrame*
> out)
> +{
> + Mpeg1Context *mpeg_ctx = &q->mpeg_ctx;
> + mfxU8 data[1024] = { 0 };
> + mfxPayload payload = { 0, .Data = &data[0], .BufSize = sizeof(data) };
> + mfxU64 ts;
> + int ret;
> +
> + while (1) {
> + int start;
> +
> + memset(&data[0], 0, sizeof(data));
> + ret = MFXVideoDECODE_GetPayload(q->session, &ts, &payload);
> + if (ret != MFX_ERR_NONE) {
> + av_log(avctx, AV_LOG_WARNING, "error getting SEI payload: %d \n",
> ret);
> + return ret;
> + }
> +
> + if (payload.NumBit == 0 || payload.NumBit >= sizeof(data) * 8) {
> + break;
> + }
> +
> + start = find_start_offset(data);
> +
> + start++;
> +
> + ff_mpeg_decode_user_data(avctx, mpeg_ctx, &data[start],
> (int)((payload.NumBit + 7) / 8) - start);
> +
> + if (ret < 0)
> + av_log(avctx, AV_LOG_WARNING, "error parsing SEI type:
> %d Numbits %d error: %d\n", payload.Type, payload.NumBit, ret);
> + else
> + av_log(avctx, AV_LOG_DEBUG, "mfxPayload Type: %d Numbits %d
> start %d -> %.s\n", payload.Type, payload.NumBit, start, (char
> *)(&data[start]));
> + }
> +
> + if (!out)
> + return 0;
> +
> + if (mpeg_ctx->a53_buf_ref) {
> +
> + AVFrameSideData *sd = av_frame_new_side_data_from_buf(out,
> AV_FRAME_DATA_A53_CC, mpeg_ctx->a53_buf_ref);
> + if (!sd)
> + av_buffer_unref(&mpeg_ctx->a53_buf_ref);
> + mpeg_ctx->a53_buf_ref = NULL;
> + }
> +
> + if (mpeg_ctx->has_stereo3d) {
> + AVStereo3D *stereo = av_stereo3d_create_side_data(out);
> + if (!stereo)
> + return AVERROR(ENOMEM);
> +
> + *stereo = mpeg_ctx->stereo3d;
> + mpeg_ctx->has_stereo3d = 0;
> + }
> +
> + if (mpeg_ctx->has_afd) {
> + AVFrameSideData *sd = av_frame_new_side_data(out, AV_FRAME_DATA_AFD,
> 1);
> + if (!sd)
> + return AVERROR(ENOMEM);
> +
> + *sd->data = mpeg_ctx->afd;
> + mpeg_ctx->has_afd = 0;
> + }
> +
> + return 0;
> +}
> +
> static int qsv_decode(AVCodecContext *avctx, QSVContext *q,
> AVFrame *frame, int *got_frame,
> const AVPacket *avpkt)
> @@ -535,6 +722,8 @@ static int qsv_decode(AVCodecContext *avctx, QSVContext
> *q,
> insurf, &outsurf, sync);
> if (ret == MFX_WRN_DEVICE_BUSY)
> av_usleep(500);
> + else if (avctx->codec_id == AV_CODEC_ID_MPEG1VIDEO || avctx->codec_id
> == AV_CODEC_ID_MPEG2VIDEO)
> + parse_sei_mpeg12(avctx, q, NULL);
>
> } while (ret == MFX_WRN_DEVICE_BUSY || ret == MFX_ERR_MORE_SURFACE);
>
> @@ -570,6 +759,27 @@ static int qsv_decode(AVCodecContext *avctx, QSVContext
> *q,
> return AVERROR_BUG;
> }
>
> + switch (avctx->codec_id) {
> + case AV_CODEC_ID_MPEG1VIDEO:
> + case AV_CODEC_ID_MPEG2VIDEO:
> + ret = parse_sei_mpeg12(avctx, q, out_frame->frame);
> + break;
> + case AV_CODEC_ID_H264:
> + ret = parse_sei_h264(avctx, q, out_frame->frame);
> + break;
> + case AV_CODEC_ID_HEVC:
> + ret = parse_sei_hevc(avctx, q, out_frame->frame);
> + break;
> + default:
> + ret = 0;
> + }
> +
> + if (ret < 0) {
> + av_log(avctx, AV_LOG_ERROR, "Error parsing SEI data\n");
> + av_freep(&sync);
> + return ret;
> + }
> +#
> out_frame->queued = 1;
> av_fifo_generic_write(q->async_fifo, &out_frame, sizeof(out_frame),
> NULL);
> av_fifo_generic_write(q->async_fifo,
> &sync, sizeof(sync), NULL);
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