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dxva2_hevc: properly fill the scaling list structure

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The scaling list can be specified in either the SPS or PPS.
Additionally, compensate for the diagonal scan permutation applied
in the decoder.

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
This commit is contained in:
Hendrik Leppkes 2015-02-03 22:39:45 +01:00 committed by Luca Barbato
parent 9295d10ea9
commit 8029af586f
1 changed files with 18 additions and 12 deletions
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30
libavcodec/dxva2_hevc.c
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@ -192,23 +192,29 @@ static void fill_picture_parameters(struct dxva_context *ctx, const HEVCContext
static void fill_scaling_lists(struct dxva_context *ctx, const HEVCContext *h, DXVA_Qmatrix_HEVC *qm)
{
unsigned i, j;
unsigned i, j, pos;
const ScalingList *sl = h->pps->scaling_list_data_present_flag ?
&h->pps->scaling_list : &h->sps->scaling_list;
memset(qm, 0, sizeof(*qm));
for (i = 0; i < 6; i++) {
for (j = 0; j < 16; j++)
qm->ucScalingLists0[i][j] = h->pps->scaling_list.sl[0][i][j];
for (j = 0; j < 64; j++) {
qm->ucScalingLists1[i][j] = h->pps->scaling_list.sl[1][i][j];
qm->ucScalingLists2[i][j] = h->pps->scaling_list.sl[2][i][j];
if (i < 2)
qm->ucScalingLists3[i][j] = h->pps->scaling_list.sl[3][i][j];
for (j = 0; j < 16; j++) {
pos = 4 * ff_hevc_diag_scan4x4_y[j] + ff_hevc_diag_scan4x4_x[j];
qm->ucScalingLists0[i][j] = sl->sl[0][i][pos];
}
qm->ucScalingListDCCoefSizeID2[i] = h->pps->scaling_list.sl_dc[0][i];
for (j = 0; j < 64; j++) {
pos = 8 * ff_hevc_diag_scan8x8_y[j] + ff_hevc_diag_scan8x8_x[j];
qm->ucScalingLists1[i][j] = sl->sl[1][i][pos];
qm->ucScalingLists2[i][j] = sl->sl[2][i][pos];
if (i < 2)
qm->ucScalingLists3[i][j] = sl->sl[3][i][pos];
}
qm->ucScalingListDCCoefSizeID2[i] = sl->sl_dc[0][i];
if (i < 2)
qm->ucScalingListDCCoefSizeID3[i] = h->pps->scaling_list.sl_dc[1][i];
qm->ucScalingListDCCoefSizeID3[i] = sl->sl_dc[1][i];
}
}