marfrit/libva-v4l2-request-fourier
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Add support for MPEG2 quantization matrices

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This adds support for MPEG2 quantization matrices, which are optional
given that fallback default matrices are used (on the kernel side) when
no such matrix is provided.

Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
This commit is contained in:
Paul Kocialkowski
2018-07-25 14:19:34 +02:00
parent 815f38a6a7
commit 7d1ac10517
3 changed files with 42 additions and 0 deletions
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src/mpeg2.c
+32
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@@ -44,9 +44,14 @@ int mpeg2_set_controls(struct request_data *driver_data,
{
VAPictureParameterBufferMPEG2 *parameters =
&surface_object->params.mpeg2.picture;
VAIQMatrixBufferMPEG2 *iqmatrix =
&surface_object->params.mpeg2.iqmatrix;
bool iqmatrix_set = surface_object->params.mpeg2.iqmatrix_set;
struct v4l2_ctrl_mpeg2_slice_params slice_params;
struct v4l2_ctrl_mpeg2_quantization quantization;
struct object_surface *forward_reference_surface;
struct object_surface *backward_reference_surface;
unsigned int i;
int rc;
memset(&slice_params, 0, sizeof(slice_params));
@@ -105,5 +110,32 @@ int mpeg2_set_controls(struct request_data *driver_data,
if (rc < 0)
return VA_STATUS_ERROR_OPERATION_FAILED;
if (iqmatrix_set) {
quantization.load_intra_quantiser_matrix =
iqmatrix->load_intra_quantiser_matrix;
quantization.load_non_intra_quantiser_matrix =
iqmatrix->load_non_intra_quantiser_matrix;
quantization.load_chroma_intra_quantiser_matrix =
iqmatrix->load_chroma_intra_quantiser_matrix;
quantization.load_chroma_non_intra_quantiser_matrix =
iqmatrix->load_chroma_non_intra_quantiser_matrix;
for (i = 0; i < 64; i++) {
quantization.intra_quantiser_matrix[i] =
iqmatrix->intra_quantiser_matrix[i];
quantization.non_intra_quantiser_matrix[i] =
iqmatrix->non_intra_quantiser_matrix[i];
quantization.chroma_intra_quantiser_matrix[i] =
iqmatrix->chroma_intra_quantiser_matrix[i];
quantization.chroma_non_intra_quantiser_matrix[i] =
iqmatrix->chroma_non_intra_quantiser_matrix[i];
}
rc = v4l2_set_control(driver_data->video_fd,
surface_object->request_fd,
V4L2_CID_MPEG_VIDEO_MPEG2_QUANTIZATION,
&quantization, sizeof(quantization));
}
return 0;
}