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v4l2codecs: vp9: Make compressed hdr control optional

Browse source 
This is to supported by Mediatek VP9 driver. Mediatek handles
the forward probabilities in hardware hence does not need and
does not implement support for
V4L2_CID_STATELESS_VP9_COMPRESSED_HDR.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1600>
This commit is contained in:
Nicolas Dufresne 2022-01-28 14:49:42 -05:00
parent 7bebb2ea38
commit 13944cf3ee
2 changed files with 21 additions and 8 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

23
subprojects/gst-plugins-bad/sys/v4l2codecs/gstv4l2codecvp9dec.c
View file

@ -369,6 +369,10 @@ gst_v4l2_codec_vp9_dec_open (GstVideoDecoder * decoder)
return FALSE;
}
vp9dec->parse_compressed_headers =
gst_v4l2_decoder_query_control_size (self->decoder,
V4L2_CID_STATELESS_VP9_COMPRESSED_HDR, NULL);
/* V4L2 does not support non-keyframe resolution change, this will ask the
* base class to drop frame until the next keyframe as a workaround. */
gst_vp9_decoder_set_non_keyframe_format_change_support (vp9dec, FALSE);
@ -623,7 +627,9 @@ gst_v4l2_codec_vp9_dec_new_sequence (GstVp9Decoder * decoder,
}
gst_v4l2_codec_vp9_dec_fill_dec_params (self, frame_hdr, NULL);
gst_v4l2_codec_vp9_dec_fill_prob_updates (self, frame_hdr);
if (decoder->parse_compressed_headers)
gst_v4l2_codec_vp9_dec_fill_prob_updates (self, frame_hdr);
if (negotiation_needed) {
self->need_negotiation = TRUE;
@ -734,6 +740,7 @@ gst_v4l2_codec_vp9_dec_end_picture (GstVp9Decoder * decoder,
GstV4l2Request *request = NULL;
GstFlowReturn flow_ret;
gsize bytesused;
guint num_controls = 1;
/* *INDENT-OFF* */
struct v4l2_ext_control decode_params_control[] = {
@ -743,11 +750,17 @@ gst_v4l2_codec_vp9_dec_end_picture (GstVp9Decoder * decoder,
.size = sizeof(self->v4l2_vp9_frame),
},
{
/* V4L2_CID_STATELESS_VP9_COMPRESSED_HDR */
},
};
if (decoder->parse_compressed_headers) {
decode_params_control[num_controls++] = (struct v4l2_ext_control) {
.id = V4L2_CID_STATELESS_VP9_COMPRESSED_HDR,
.ptr = &self->v4l2_delta_probs,
.size = sizeof (self->v4l2_delta_probs),
},
};
};
}
/* *INDENT-ON* */
bytesused = self->bitstream_map.size;
@ -782,7 +795,7 @@ gst_v4l2_codec_vp9_dec_end_picture (GstVp9Decoder * decoder,
}
if (!gst_v4l2_decoder_set_controls (self->decoder, request,
decode_params_control, G_N_ELEMENTS (decode_params_control))) {
decode_params_control, num_controls)) {
GST_ELEMENT_ERROR (decoder, RESOURCE, WRITE,
("Driver did not accept the bitstream parameters."), (NULL));
goto fail;
@ -1025,8 +1038,6 @@ gst_v4l2_codec_vp9_dec_get_property (GObject * object, guint prop_id,
static void
gst_v4l2_codec_vp9_dec_init (GstV4l2CodecVp9Dec * self)
{
GstVp9Decoder *parent = GST_VP9_DECODER (self);
parent->parse_compressed_headers = TRUE;
}
static void

6
subprojects/gst-plugins-bad/sys/v4l2codecs/gstv4l2decoder.c
View file

@ -739,7 +739,8 @@ gst_v4l2_decoder_query_control_size (GstV4l2Decoder * self,
.id = control_id,
};
*control_size = 0;
if (control_size)
*control_size = 0;
ret = ioctl (self->video_fd, VIDIOC_QUERY_EXT_CTRL, &control);
if (ret < 0)
@ -749,7 +750,8 @@ gst_v4l2_decoder_query_control_size (GstV4l2Decoder * self,
*/
return FALSE;
*control_size = control.elem_size;
if (control_size)
*control_size = control.elem_size;
return TRUE;
}