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v4l2codecs: h264: Reduce controls for subsequent slices

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Only the SLICE_PARAMS and PRED_WEIGHTS are needed for the second and
following slices.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1624>
This commit is contained in:
Nicolas Dufresne 2020-11-27 16:00:03 -05:00 committed by GStreamer Merge Bot
parent 1c082b79e1
commit 84daea6be2
1 changed files with 29 additions and 22 deletions
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51
sys/v4l2codecs/gstv4l2codech264dec.c
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@ -67,6 +67,7 @@ struct _GstV4l2CodecH264Dec
guint bitdepth;
guint chroma_format_idc;
guint num_slices;
gboolean first_slice;
GstV4l2CodecAllocator *sink_allocator;
GstV4l2CodecAllocator *src_allocator;
@ -883,6 +884,8 @@ gst_v4l2_codec_h264_dec_start_picture (GstH264Decoder * decoder,
gst_v4l2_codec_h264_dec_fill_decoder_params (self, &slice->header, picture,
dpb);
self->first_slice = TRUE;
return TRUE;
}
@ -1027,24 +1030,17 @@ gst_v4l2_codec_h264_dec_submit_bitstream (GstV4l2CodecH264Dec * self,
GstV4l2Request *prev_request, *request = NULL;
gsize bytesused;
gboolean ret = FALSE;
guint count;
guint count = 0;
/* *INDENT-OFF* */
/* Reserve space for controls */
struct v4l2_ext_control control[] = {
{
.id = V4L2_CID_STATELESS_H264_PPS,
.ptr = &self->pps,
.size = sizeof (self->pps),
},
{
.id = V4L2_CID_STATELESS_H264_DECODE_PARAMS,
.ptr = &self->decode_params,
.size = sizeof (self->decode_params),
},
{ },
{ },
{ },
{ },
{ }, /* SPS */
{ }, /* PPS */
{ }, /* DECODE_PARAMS */
{ }, /* SLICE_PARAMS */
{ }, /* SCALING_MATRIX */
{ }, /* PRED_WEIGHTS */
};
/* *INDENT-ON* */
@ -1080,9 +1076,6 @@ gst_v4l2_codec_h264_dec_submit_bitstream (GstV4l2CodecH264Dec * self,
goto done;
}
/* Always set PPS and DECODE_PARAMS */
count = 2;
if (self->need_sequence) {
control[count].id = V4L2_CID_STATELESS_H264_SPS;
control[count].ptr = &self->sps;
@ -1091,11 +1084,25 @@ gst_v4l2_codec_h264_dec_submit_bitstream (GstV4l2CodecH264Dec * self,
self->need_sequence = FALSE;
}
if (self->scaling_matrix_present) {
control[count].id = V4L2_CID_STATELESS_H264_SCALING_MATRIX;
control[count].ptr = &self->scaling_matrix;
control[count].size = sizeof (self->scaling_matrix);
if (self->first_slice) {
control[count].id = V4L2_CID_STATELESS_H264_PPS;
control[count].ptr = &self->pps;
control[count].size = sizeof (self->pps);
count++;
if (self->scaling_matrix_present) {
control[count].id = V4L2_CID_STATELESS_H264_SCALING_MATRIX;
control[count].ptr = &self->scaling_matrix;
control[count].size = sizeof (self->scaling_matrix);
count++;
}
control[count].id = V4L2_CID_STATELESS_H264_DECODE_PARAMS;
control[count].ptr = &self->decode_params;
control[count].size = sizeof (self->decode_params);
count++;
self->first_slice = FALSE;
}
/* If it's not slice-based then it doesn't support per-slice controls. */