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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-25 01:30:38 +00:00
h264: implement {start,end}_frame() hooks.
Implement GstVaapiDecoder.start_frame() and end_frame() semantics so that to create new VA context earlier and submit VA pictures to the HW for decoding as soon as possible. i.e. don't wait for the next frame to start decoding the previous one.
This commit is contained in:
Gwenole Beauchesne
parent
f7f7393148
commit
d9ec93fe46
1 changed files with 36 additions and 43 deletions
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@ -1058,15 +1058,10 @@ decode_current_picture(GstVaapiDecoderH264 *decoder)
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{
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GstVaapiDecoderH264Private * const priv = decoder->priv;
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GstVaapiPictureH264 * const picture = priv->current_picture;
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GstVaapiDecoderStatus status;
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if (!picture)
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return GST_VAAPI_DECODER_STATUS_SUCCESS;
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status = ensure_context(decoder, picture->pps->sequence);
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if (status != GST_VAAPI_DECODER_STATUS_SUCCESS)
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return status;
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if (!exec_ref_pic_marking(decoder, picture))
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goto error;
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if (!dpb_add(decoder, picture))
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@ -1165,7 +1160,7 @@ decode_sequence_end(GstVaapiDecoderH264 *decoder)
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return status;
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dpb_flush(decoder);
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return GST_VAAPI_DECODER_STATUS_END_OF_STREAM;
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return GST_VAAPI_DECODER_STATUS_SUCCESS;
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}
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/* 8.2.1.1 - Decoding process for picture order count type 0 */
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@ -2047,13 +2042,11 @@ init_picture_refs(
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static gboolean
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init_picture(
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GstVaapiDecoderH264 *decoder,
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GstVaapiPictureH264 *picture,
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GstH264SliceHdr *slice_hdr,
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GstH264NalUnit *nalu
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)
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GstVaapiPictureH264 *picture, GstVaapiDecoderUnitH264 *unit)
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{
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GstVaapiDecoderH264Private * const priv = decoder->priv;
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GstVaapiPicture * const base_picture = &picture->base;
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GstH264SliceHdr * const slice_hdr = &unit->data.slice_hdr;
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priv->prev_frame_num = priv->frame_num;
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priv->frame_num = slice_hdr->frame_num;
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@ -2063,7 +2056,7 @@ init_picture(
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base_picture->pts = GST_VAAPI_DECODER_CODEC_FRAME(decoder)->pts;
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/* Reset decoder state for IDR pictures */
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if (nalu->type == GST_H264_NAL_SLICE_IDR) {
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if (unit->nalu.type == GST_H264_NAL_SLICE_IDR) {
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GST_DEBUG("<IDR>");
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GST_VAAPI_PICTURE_FLAG_SET(picture, GST_VAAPI_PICTURE_FLAG_IDR);
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dpb_flush(decoder);
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@ -2101,7 +2094,7 @@ init_picture(
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picture->structure = base_picture->structure;
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/* Initialize reference flags */
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if (nalu->ref_idc) {
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if (unit->nalu.ref_idc) {
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GstH264DecRefPicMarking * const dec_ref_pic_marking =
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&slice_hdr->dec_ref_pic_marking;
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@ -2442,15 +2435,12 @@ vaapi_fill_picture(VAPictureH264 *pic, GstVaapiPictureH264 *picture,
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}
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static gboolean
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fill_picture(
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GstVaapiDecoderH264 *decoder,
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GstVaapiPictureH264 *picture,
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GstH264SliceHdr *slice_hdr,
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GstH264NalUnit *nalu
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)
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fill_picture(GstVaapiDecoderH264 *decoder,
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GstVaapiPictureH264 *picture, GstVaapiDecoderUnitH264 *unit)
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{
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GstVaapiDecoderH264Private * const priv = decoder->priv;
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GstVaapiPicture * const base_picture = &picture->base;
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GstH264SliceHdr * const slice_hdr = &unit->data.slice_hdr;
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GstH264PPS * const pps = picture->pps;
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GstH264SPS * const sps = pps->sequence;
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VAPictureParameterBufferH264 * const pic_param = base_picture->param;
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@ -2596,17 +2586,14 @@ is_new_picture(
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}
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static GstVaapiDecoderStatus
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decode_picture(GstVaapiDecoderH264 *decoder, GstH264NalUnit *nalu, GstH264SliceHdr *slice_hdr)
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decode_picture(GstVaapiDecoderH264 *decoder, GstVaapiDecoderUnitH264 *unit)
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{
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GstVaapiDecoderH264Private * const priv = decoder->priv;
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GstVaapiPictureH264 *picture;
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GstVaapiDecoderStatus status;
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GstH264SliceHdr * const slice_hdr = &unit->data.slice_hdr;
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GstH264PPS * const pps = slice_hdr->pps;
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GstH264SPS * const sps = pps->sequence;
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status = decode_current_picture(decoder);
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if (status != GST_VAAPI_DECODER_STATUS_SUCCESS)
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return status;
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GstVaapiPictureH264 *picture;
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GstVaapiDecoderStatus status;
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status = ensure_context(decoder, sps);
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if (status != GST_VAAPI_DECODER_STATUS_SUCCESS)
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@ -2639,9 +2626,9 @@ decode_picture(GstVaapiDecoderH264 *decoder, GstH264NalUnit *nalu, GstH264SliceH
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return status;
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}
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if (!init_picture(decoder, picture, slice_hdr, nalu))
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if (!init_picture(decoder, picture, unit))
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return GST_VAAPI_DECODER_STATUS_ERROR_UNKNOWN;
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if (!fill_picture(decoder, picture, slice_hdr, nalu))
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if (!fill_picture(decoder, picture, unit))
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return GST_VAAPI_DECODER_STATUS_ERROR_UNKNOWN;
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return GST_VAAPI_DECODER_STATUS_SUCCESS;
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}
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@ -2798,20 +2785,13 @@ decode_slice(GstVaapiDecoderH264 *decoder, GstVaapiDecoderUnitH264 *unit)
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GstH264SliceHdr * const slice_hdr = &unit->data.slice_hdr;
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GstH264NalUnit * const nalu = &unit->nalu;
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GstVaapiDecoderStatus status;
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GstVaapiPictureH264 *picture;
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GstVaapiSliceH264 *slice = NULL;
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GstVaapiSliceH264 *slice;
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GST_DEBUG("slice (%u bytes)", nalu->size);
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if (!priv->got_sps || !priv->got_pps)
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return GST_VAAPI_DECODER_STATUS_SUCCESS;
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if (!priv->has_context) {
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status = ensure_context(decoder, slice_hdr->pps->sequence);
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if (status != GST_VAAPI_DECODER_STATUS_SUCCESS)
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return status;
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}
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unit->base.buffer = gst_buffer_create_sub(
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GST_VAAPI_DECODER_CODEC_FRAME(decoder)->input_buffer,
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unit->base.offset, unit->base.size);
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@ -2828,19 +2808,12 @@ decode_slice(GstVaapiDecoderH264 *decoder, GstVaapiDecoderUnitH264 *unit)
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}
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slice->slice_hdr = *slice_hdr;
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if (is_new_picture(decoder, nalu, slice_hdr)) {
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status = decode_picture(decoder, nalu, slice_hdr);
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if (status != GST_VAAPI_DECODER_STATUS_SUCCESS)
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goto error;
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}
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picture = priv->current_picture;
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if (!fill_slice(decoder, slice, nalu)) {
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status = GST_VAAPI_DECODER_STATUS_ERROR_UNKNOWN;
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goto error;
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}
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gst_vaapi_picture_add_slice(
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GST_VAAPI_PICTURE_CAST(picture),
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GST_VAAPI_PICTURE_CAST(priv->current_picture),
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GST_VAAPI_SLICE_CAST(slice)
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);
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return GST_VAAPI_DECODER_STATUS_SUCCESS;
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@ -3141,6 +3114,24 @@ gst_vaapi_decoder_h264_decode(GstVaapiDecoder *base_decoder,
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return decode_unit(decoder, (GstVaapiDecoderUnitH264 *)unit);
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}
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static GstVaapiDecoderStatus
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gst_vaapi_decoder_h264_start_frame(GstVaapiDecoder *base_decoder,
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GstVaapiDecoderUnit *base_unit)
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{
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GstVaapiDecoderH264 * const decoder = GST_VAAPI_DECODER_H264(base_decoder);
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GstVaapiDecoderUnitH264 * const unit = (GstVaapiDecoderUnitH264 *)base_unit;
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return decode_picture(decoder, unit);
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}
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static GstVaapiDecoderStatus
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gst_vaapi_decoder_h264_end_frame(GstVaapiDecoder *base_decoder)
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{
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GstVaapiDecoderH264 * const decoder = GST_VAAPI_DECODER_H264(base_decoder);
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return decode_current_picture(decoder);
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}
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static void
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gst_vaapi_decoder_h264_finalize(GObject *object)
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{
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@ -3178,6 +3169,8 @@ gst_vaapi_decoder_h264_class_init(GstVaapiDecoderH264Class *klass)
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decoder_class->parse = gst_vaapi_decoder_h264_parse;
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decoder_class->decode = gst_vaapi_decoder_h264_decode;
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decoder_class->start_frame = gst_vaapi_decoder_h264_start_frame;
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decoder_class->end_frame = gst_vaapi_decoder_h264_end_frame;
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}
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static void
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