/** Decode the given H.264 slice with VA API. */
static int decode_slice(AVCodecContext *avctx,
const uint8_t *buffer,
uint32_t size)
{
H264Context * const h = avctx->priv_data;
MpegEncContext * const s = &h->s;
VASliceParameterBufferH264 *slice_param;
av_dlog(avctx, "decode_slice(): buffer %p, size %d\n", buffer, size);
/* Fill in VASliceParameterBufferH264. */
slice_param = (VASliceParameterBufferH264 *)ff_vaapi_alloc_slice(avctx->hwaccel_context, buffer, size);
if (!slice_param)
return -1;
slice_param->slice_data_bit_offset = get_bits_count(&h->s.gb) + 8; /* bit buffer started beyond nal_unit_type */
slice_param->first_mb_in_slice = (s->mb_y >> FIELD_OR_MBAFF_PICTURE) * s->mb_width + s->mb_x;
slice_param->slice_type = ff_h264_get_slice_type(h);
slice_param->direct_spatial_mv_pred_flag = h->slice_type == AV_PICTURE_TYPE_B ? h->direct_spatial_mv_pred : 0;
slice_param->num_ref_idx_l0_active_minus1 = h->list_count > 0 ? h->ref_count[0] - 1 : 0;
slice_param->num_ref_idx_l1_active_minus1 = h->list_count > 1 ? h->ref_count[1] - 1 : 0;
slice_param->cabac_init_idc = h->cabac_init_idc;
slice_param->slice_qp_delta = s->qscale - h->pps.init_qp;
slice_param->disable_deblocking_filter_idc = h->deblocking_filter < 2 ? !h->deblocking_filter : h->deblocking_filter;
slice_param->slice_alpha_c0_offset_div2 = h->slice_alpha_c0_offset / 2 - 26;
slice_param->slice_beta_offset_div2 = h->slice_beta_offset / 2 - 26;
slice_param->luma_log2_weight_denom = h->luma_log2_weight_denom;
slice_param->chroma_log2_weight_denom = h->chroma_log2_weight_denom;
fill_vaapi_RefPicList(slice_param->RefPicList0, h->ref_list[0], h->list_count > 0 ? h->ref_count[0] : 0);
fill_vaapi_RefPicList(slice_param->RefPicList1, h->ref_list[1], h->list_count > 1 ? h->ref_count[1] : 0);
fill_vaapi_plain_pred_weight_table(h, 0,
&slice_param->luma_weight_l0_flag, slice_param->luma_weight_l0, slice_param->luma_offset_l0,
&slice_param->chroma_weight_l0_flag, slice_param->chroma_weight_l0, slice_param->chroma_offset_l0);
fill_vaapi_plain_pred_weight_table(h, 1,
&slice_param->luma_weight_l1_flag, slice_param->luma_weight_l1, slice_param->luma_offset_l1,
&slice_param->chroma_weight_l1_flag, slice_param->chroma_weight_l1, slice_param->chroma_offset_l1);
return 0;
}
/** Decode the given H.264 slice with VA API. */
static int vaapi_h264_decode_slice(AVCodecContext *avctx,
const uint8_t *buffer,
uint32_t size)
{
FFVAContext * const vactx = ff_vaapi_get_context(avctx);
H264Context * const h = avctx->priv_data;
H264SliceContext *sl = &h->slice_ctx[0];
VASliceParameterBufferH264 *slice_param;
/* Fill in VASliceParameterBufferH264. */
slice_param = (VASliceParameterBufferH264 *)ff_vaapi_alloc_slice(vactx, buffer, size);
if (!slice_param)
return -1;
slice_param->slice_data_bit_offset = get_bits_count(&sl->gb);
slice_param->first_mb_in_slice = (sl->mb_y >> FIELD_OR_MBAFF_PICTURE(h)) * h->mb_width + sl->mb_x;
slice_param->slice_type = ff_h264_get_slice_type(sl);
slice_param->direct_spatial_mv_pred_flag = sl->slice_type == AV_PICTURE_TYPE_B ? sl->direct_spatial_mv_pred : 0;
slice_param->num_ref_idx_l0_active_minus1 = sl->list_count > 0 ? sl->ref_count[0] - 1 : 0;
slice_param->num_ref_idx_l1_active_minus1 = sl->list_count > 1 ? sl->ref_count[1] - 1 : 0;
slice_param->cabac_init_idc = sl->cabac_init_idc;
slice_param->slice_qp_delta = sl->qscale - h->ps.pps->init_qp;
slice_param->disable_deblocking_filter_idc = sl->deblocking_filter < 2 ? !sl->deblocking_filter : sl->deblocking_filter;
slice_param->slice_alpha_c0_offset_div2 = sl->slice_alpha_c0_offset / 2;
slice_param->slice_beta_offset_div2 = sl->slice_beta_offset / 2;
slice_param->luma_log2_weight_denom = sl->pwt.luma_log2_weight_denom;
slice_param->chroma_log2_weight_denom = sl->pwt.chroma_log2_weight_denom;
fill_vaapi_RefPicList(slice_param->RefPicList0, sl->ref_list[0], sl->list_count > 0 ? sl->ref_count[0] : 0);
fill_vaapi_RefPicList(slice_param->RefPicList1, sl->ref_list[1], sl->list_count > 1 ? sl->ref_count[1] : 0);
fill_vaapi_plain_pred_weight_table(h, 0,
&slice_param->luma_weight_l0_flag, slice_param->luma_weight_l0, slice_param->luma_offset_l0,
&slice_param->chroma_weight_l0_flag, slice_param->chroma_weight_l0, slice_param->chroma_offset_l0);
fill_vaapi_plain_pred_weight_table(h, 1,
&slice_param->luma_weight_l1_flag, slice_param->luma_weight_l1, slice_param->luma_offset_l1,
&slice_param->chroma_weight_l1_flag, slice_param->chroma_weight_l1, slice_param->chroma_offset_l1);
return 0;
}
static void fill_slice_long(AVCodecContext *avctx, DXVA_Slice_H264_Long *slice,
unsigned position, unsigned size)
{
const H264Context *h = avctx->priv_data;
struct dxva_context *ctx = avctx->hwaccel_context;
const MpegEncContext *s = &h->s;
unsigned list;
memset(slice, 0, sizeof(*slice));
slice->BSNALunitDataLocation = position;
slice->SliceBytesInBuffer = size;
slice->wBadSliceChopping = 0;
slice->first_mb_in_slice = (s->mb_y >> FIELD_OR_MBAFF_PICTURE) * s->mb_width + s->mb_x;
slice->NumMbsForSlice = 0; /* XXX it is set once we have all slices */
slice->BitOffsetToSliceData = get_bits_count(&s->gb) + 8;
slice->slice_type = ff_h264_get_slice_type(h);
if (h->slice_type_fixed)
slice->slice_type += 5;
slice->luma_log2_weight_denom = h->luma_log2_weight_denom;
slice->chroma_log2_weight_denom = h->chroma_log2_weight_denom;
if (h->list_count > 0)
slice->num_ref_idx_l0_active_minus1 = h->ref_count[0] - 1;
if (h->list_count > 1)
slice->num_ref_idx_l1_active_minus1 = h->ref_count[1] - 1;
slice->slice_alpha_c0_offset_div2 = h->slice_alpha_c0_offset / 2 - 26;
slice->slice_beta_offset_div2 = h->slice_beta_offset / 2 - 26;
slice->Reserved8Bits = 0;
for (list = 0; list < 2; list++) {
unsigned i;
for (i = 0; i < FF_ARRAY_ELEMS(slice->RefPicList[list]); i++) {
if (list < h->list_count && i < h->ref_count[list]) {
const Picture *r = &h->ref_list[list][i];
unsigned plane;
fill_picture_entry(&slice->RefPicList[list][i],
ff_dxva2_get_surface_index(ctx, r),
r->reference == PICT_BOTTOM_FIELD);
for (plane = 0; plane < 3; plane++) {
int w, o;
if (plane == 0 && h->luma_weight_flag[list]) {
w = h->luma_weight[i][list][0];
o = h->luma_weight[i][list][1];
} else if (plane >= 1 && h->chroma_weight_flag[list]) {
w = h->chroma_weight[i][list][plane-1][0];
o = h->chroma_weight[i][list][plane-1][1];
} else {
w = 1 << (plane == 0 ? h->luma_log2_weight_denom :
h->chroma_log2_weight_denom);
o = 0;
}
slice->Weights[list][i][plane][0] = w;
slice->Weights[list][i][plane][1] = o;
}
} else {
unsigned plane;
slice->RefPicList[list][i].bPicEntry = 0xff;
for (plane = 0; plane < 3; plane++) {
slice->Weights[list][i][plane][0] = 0;
slice->Weights[list][i][plane][1] = 0;
}
}
}
}
slice->slice_qs_delta = 0; /* XXX not implemented by FFmpeg */
slice->slice_qp_delta = s->qscale - h->pps.init_qp;
slice->redundant_pic_cnt = h->redundant_pic_count;
if (h->slice_type == FF_B_TYPE)
slice->direct_spatial_mv_pred_flag = h->direct_spatial_mv_pred;
slice->cabac_init_idc = h->pps.cabac ? h->cabac_init_idc : 0;
if (h->deblocking_filter < 2)
slice->disable_deblocking_filter_idc = 1 - h->deblocking_filter;
else
slice->disable_deblocking_filter_idc = h->deblocking_filter;
slice->slice_id = h->current_slice - 1;
}
static void fill_slice_long(AVCodecContext *avctx, DXVA_Slice_H264_Long *slice,
const DXVA_PicParams_H264 *pp, unsigned position, unsigned size)
{
const H264Context *h = avctx->priv_data;
H264SliceContext *sl = &h->slice_ctx[0];
AVDXVAContext *ctx = avctx->hwaccel_context;
unsigned list;
memset(slice, 0, sizeof(*slice));
slice->BSNALunitDataLocation = position;
slice->SliceBytesInBuffer = size;
slice->wBadSliceChopping = 0;
slice->first_mb_in_slice = (sl->mb_y >> FIELD_OR_MBAFF_PICTURE(h)) * h->mb_width + sl->mb_x;
slice->NumMbsForSlice = 0; /* XXX it is set once we have all slices */
slice->BitOffsetToSliceData = get_bits_count(&sl->gb) - 8;
slice->slice_type = ff_h264_get_slice_type(sl);
if (sl->slice_type_fixed)
slice->slice_type += 5;
slice->luma_log2_weight_denom = sl->pwt.luma_log2_weight_denom;
slice->chroma_log2_weight_denom = sl->pwt.chroma_log2_weight_denom;
if (sl->list_count > 0)
slice->num_ref_idx_l0_active_minus1 = sl->ref_count[0] - 1;
if (sl->list_count > 1)
slice->num_ref_idx_l1_active_minus1 = sl->ref_count[1] - 1;
slice->slice_alpha_c0_offset_div2 = sl->slice_alpha_c0_offset / 2;
slice->slice_beta_offset_div2 = sl->slice_beta_offset / 2;
slice->Reserved8Bits = 0;
for (list = 0; list < 2; list++) {
unsigned i;
for (i = 0; i < FF_ARRAY_ELEMS(slice->RefPicList[list]); i++) {
if (list < sl->list_count && i < sl->ref_count[list]) {
const H264Picture *r = sl->ref_list[list][i].parent;
unsigned plane;
unsigned index;
if (DXVA_CONTEXT_WORKAROUND(avctx, ctx) & FF_DXVA2_WORKAROUND_INTEL_CLEARVIDEO)
index = ff_dxva2_get_surface_index(avctx, ctx, r->f);
else
index = get_refpic_index(pp, ff_dxva2_get_surface_index(avctx, ctx, r->f));
fill_picture_entry(&slice->RefPicList[list][i], index,
sl->ref_list[list][i].reference == PICT_BOTTOM_FIELD);
for (plane = 0; plane < 3; plane++) {
int w, o;
if (plane == 0 && sl->pwt.luma_weight_flag[list]) {
w = sl->pwt.luma_weight[i][list][0];
o = sl->pwt.luma_weight[i][list][1];
} else if (plane >= 1 && sl->pwt.chroma_weight_flag[list]) {
w = sl->pwt.chroma_weight[i][list][plane-1][0];
o = sl->pwt.chroma_weight[i][list][plane-1][1];
} else {
w = 1 << (plane == 0 ? sl->pwt.luma_log2_weight_denom :
sl->pwt.chroma_log2_weight_denom);
o = 0;
}
slice->Weights[list][i][plane][0] = w;
slice->Weights[list][i][plane][1] = o;
}
} else {
unsigned plane;
slice->RefPicList[list][i].bPicEntry = 0xff;
for (plane = 0; plane < 3; plane++) {
slice->Weights[list][i][plane][0] = 0;
slice->Weights[list][i][plane][1] = 0;
}
}
}
}
slice->slice_qs_delta = 0; /* XXX not implemented by FFmpeg */
slice->slice_qp_delta = sl->qscale - h->pps.init_qp;
slice->redundant_pic_cnt = sl->redundant_pic_count;
if (sl->slice_type == AV_PICTURE_TYPE_B)
slice->direct_spatial_mv_pred_flag = sl->direct_spatial_mv_pred;
slice->cabac_init_idc = h->pps.cabac ? sl->cabac_init_idc : 0;
if (sl->deblocking_filter < 2)
slice->disable_deblocking_filter_idc = 1 - sl->deblocking_filter;
else
slice->disable_deblocking_filter_idc = sl->deblocking_filter;
slice->slice_id = h->current_slice - 1;
}
