29 DXVA_PicParams_H264
pp;
39 unsigned index,
unsigned flag)
41 assert((index&0x7f) == index && (flag&0x01) == flag);
42 pic->bPicEntry = index | (flag << 7);
46 DXVA_PicParams_H264 *pp)
51 memset(pp, 0,
sizeof(*pp));
57 pp->UsedForReferenceFlags = 0;
58 pp->NonExistingFrameFlags = 0;
61 if (j < h->short_ref_count) {
65 while (!r && j < h->short_ref_count + 16)
74 pp->FieldOrderCntList[i][0] = r->
field_poc[0];
76 pp->FieldOrderCntList[i][1] = r->
field_poc[1];
80 pp->UsedForReferenceFlags |= 1 << (2*i + 0);
82 pp->UsedForReferenceFlags |= 1 << (2*i + 1);
84 pp->RefFrameList[i].bPicEntry = 0xff;
85 pp->FieldOrderCntList[i][0] = 0;
86 pp->FieldOrderCntList[i][1] = 0;
87 pp->FrameNumList[i] = 0;
91 pp->wFrameWidthInMbsMinus1 = h->
mb_width - 1;
92 pp->wFrameHeightInMbsMinus1 = h->
mb_height - 1;
118 pp->Reserved16Bits = 0;
120 pp->Reserved16Bits = 0x34c;
122 pp->Reserved16Bits = 3;
123 pp->StatusReportFeedbackNumber = 1 + ctx->
report_id++;
124 pp->CurrFieldOrderCnt[0] = 0;
126 current_picture->
field_poc[0] != INT_MAX)
127 pp->CurrFieldOrderCnt[0] = current_picture->
field_poc[0];
128 pp->CurrFieldOrderCnt[1] = 0;
130 current_picture->
field_poc[1] != INT_MAX)
131 pp->CurrFieldOrderCnt[1] = current_picture->
field_poc[1];
132 pp->pic_init_qs_minus26 = h->
pps.
init_qs - 26;
135 pp->ContinuationFlag = 1;
136 pp->pic_init_qp_minus26 = h->
pps.
init_qp - 26;
137 pp->num_ref_idx_l0_active_minus1 = h->
pps.
ref_count[0] - 1;
138 pp->num_ref_idx_l1_active_minus1 = h->
pps.
ref_count[1] - 1;
139 pp->Reserved8BitsA = 0;
148 pp->entropy_coding_mode_flag = h->
pps.
cabac;
154 pp->Reserved8BitsB = 0;
155 pp->slice_group_change_rate_minus1= 0;
162 memset(qm, 0,
sizeof(*qm));
164 for (i = 0; i < 6; i++)
165 for (j = 0; j < 16; j++)
168 for (i = 0; i < 64; i++) {
173 for (i = 0; i < 6; i++)
174 for (j = 0; j < 16; j++)
177 for (i = 0; i < 64; i++) {
186 assert(ctx->
cfg->ConfigBitstreamRaw == 1 ||
187 ctx->
cfg->ConfigBitstreamRaw == 2);
188 return ctx->
cfg->ConfigBitstreamRaw == 2;
192 unsigned position,
unsigned size)
194 memset(slice, 0,
sizeof(*slice));
195 slice->BSNALunitDataLocation = position;
196 slice->SliceBytesInBuffer =
size;
197 slice->wBadSliceChopping = 0;
204 if ((pp->RefFrameList[i].bPicEntry & 0x7f) == surface_index)
211 const DXVA_PicParams_H264 *pp,
unsigned position,
unsigned size)
217 memset(slice, 0,
sizeof(*slice));
218 slice->BSNALunitDataLocation = position;
219 slice->SliceBytesInBuffer =
size;
220 slice->wBadSliceChopping = 0;
223 slice->NumMbsForSlice = 0;
227 slice->slice_type += 5;
231 slice->num_ref_idx_l0_active_minus1 = h->
ref_count[0] - 1;
233 slice->num_ref_idx_l1_active_minus1 = h->
ref_count[1] - 1;
236 slice->Reserved8Bits = 0;
238 for (list = 0; list < 2; list++) {
241 if (list < h->list_count && i < h->ref_count[list]) {
251 for (plane = 0; plane < 3; plane++) {
264 slice->Weights[list][i][plane][0] = w;
265 slice->Weights[list][i][plane][1] = o;
269 slice->RefPicList[list][i].bPicEntry = 0xff;
270 for (plane = 0; plane < 3; plane++) {
271 slice->Weights[list][i][plane][0] = 0;
272 slice->Weights[list][i][plane][1] = 0;
277 slice->slice_qs_delta = 0;
291 DXVA2_DecodeBufferDesc *bs,
292 DXVA2_DecodeBufferDesc *sc)
310 DXVA2_BitStreamDateBufferType,
311 &dxva_data_ptr, &dxva_size)))
314 dxva_data = dxva_data_ptr;
316 end = dxva_data + dxva_size;
320 static const unsigned start_code_size =
sizeof(
start_code);
321 unsigned position,
size;
323 assert(offsetof(DXVA_Slice_H264_Short, BSNALunitDataLocation) ==
324 offsetof(DXVA_Slice_H264_Long, BSNALunitDataLocation));
325 assert(offsetof(DXVA_Slice_H264_Short, SliceBytesInBuffer) ==
326 offsetof(DXVA_Slice_H264_Long, SliceBytesInBuffer));
331 slice = (DXVA_Slice_H264_Short*)&ctx_pic->
slice_long[i];
333 position = slice->BSNALunitDataLocation;
334 size = slice->SliceBytesInBuffer;
335 if (start_code_size + size > end - current) {
340 slice->BSNALunitDataLocation = current - dxva_data;
341 slice->SliceBytesInBuffer = start_code_size +
size;
344 DXVA_Slice_H264_Long *
slice_long = (DXVA_Slice_H264_Long*)slice;
346 slice_long->NumMbsForSlice =
347 slice_long[1].first_mb_in_slice - slice_long[0].first_mb_in_slice;
349 slice_long->NumMbsForSlice = mb_count - slice_long->first_mb_in_slice;
352 memcpy(current, start_code, start_code_size);
353 current += start_code_size;
355 memcpy(current, &ctx_pic->
bitstream[position], size);
358 padding =
FFMIN(128 - ((current - dxva_data) & 127), end - current);
359 if (slice && padding > 0) {
360 memset(current, 0, padding);
363 slice->SliceBytesInBuffer += padding;
366 DXVA2_BitStreamDateBufferType)))
371 memset(bs, 0,
sizeof(*bs));
372 bs->CompressedBufferType = DXVA2_BitStreamDateBufferType;
373 bs->DataSize = current - dxva_data;
374 bs->NumMBsInBuffer = mb_count;
383 assert((bs->DataSize & 127) == 0);
385 DXVA2_SliceControlBufferType,
386 slice_data, slice_size, mb_count);
437 &ctx_pic->
pp, position, size);
441 ctx_pic->
pp.wBitFields &= ~(1 << 15);
455 &ctx_pic->
pp,
sizeof(ctx_pic->
pp),
456 &ctx_pic->
qm,
sizeof(ctx_pic->
qm),
464 .
name =
"h264_dxva2",
int long_ref
1->long term reference 0->short term reference
int ff_h264_get_slice_type(const H264Context *h)
Reconstruct bitstream slice_type.
int chroma_qp_index_offset[2]
int luma_weight_flag[2]
7.4.3.2 luma_weight_lX_flag
unsigned int ref_count[2]
num_ref_idx_l0/1_active_minus1 + 1
#define FF_DXVA2_WORKAROUND_INTEL_CLEARVIDEO
Work around for DXVA2 and old Intel GPUs with ClearVideo interface.
static int commit_bitstream_and_slice_buffer(AVCodecContext *avctx, DXVA2_DecodeBufferDesc *bs, DXVA2_DecodeBufferDesc *sc)
AVHWAccel ff_h264_dxva2_hwaccel
#define FF_ARRAY_ELEMS(a)
H264Picture * long_ref[32]
const DXVA2_ConfigPictureDecode * cfg
DXVA2 configuration used to create the decoder.
unsigned surface_count
The number of surface in the surface array.
static void fill_slice_long(AVCodecContext *avctx, DXVA_Slice_H264_Long *slice, const DXVA_PicParams_H264 *pp, unsigned position, unsigned size)
int ff_dxva2_common_end_frame(AVCodecContext *avctx, AVFrame *frame, const void *pp, unsigned pp_size, const void *qm, unsigned qm_size, int(*commit_bs_si)(AVCodecContext *, DXVA2_DecodeBufferDesc *bs, DXVA2_DecodeBufferDesc *slice))
DXVA_SliceInfo slice[MAX_SLICES]
uint8_t scaling_matrix4[6][16]
int deblocking_filter_parameters_present
deblocking_filter_parameters_present_flag
void * hwaccel_context
Hardware accelerator context.
int luma_weight[48][2][2]
int bit_depth_chroma
bit_depth_chroma_minus8 + 8
static av_cold int end(AVCodecContext *avctx)
int cabac
entropy_coding_mode_flag
unsigned int ref_count[2]
num_ref_idx_l0/1_active_minus1 + 1
#define PICT_BOTTOM_FIELD
static int get_bits_count(const GetBitContext *s)
int redundant_pic_cnt_present
redundant_pic_cnt_present_flag
int luma_log2_weight_denom
int chroma_weight[48][2][2][2]
H.264 / AVC / MPEG4 part10 codec.
unsigned ff_dxva2_get_surface_index(const struct dxva_context *ctx, const AVFrame *frame)
uint64_t workaround
A bit field configuring the workarounds needed for using the decoder.
int mb_aff
mb_adaptive_frame_field_flag
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
int poc_type
pic_order_cnt_type
int constrained_intra_pred
constrained_intra_pred_flag
void * hwaccel_picture_private
hardware accelerator private data
int direct_spatial_mv_pred
int weighted_pred
weighted_pred_flag
int frame_num
frame_num (raw frame_num from slice header)
int residual_color_transform_flag
residual_colour_transform_flag
int delta_pic_order_always_zero_flag
#define FIELD_OR_MBAFF_PICTURE(h)
uint8_t scaling_matrix8[6][64]
static void fill_scaling_lists(struct dxva_context *ctx, const H264Context *h, DXVA_Qmatrix_H264 *qm)
int ref_frame_count
num_ref_frames
const char * name
Name of the hardware accelerated codec.
int ff_dxva2_commit_buffer(AVCodecContext *avctx, struct dxva_context *ctx, DXVA2_DecodeBufferDesc *dsc, unsigned type, const void *data, unsigned size, unsigned mb_count)
H264Picture ref_list[2][48]
0..15: frame refs, 16..47: mbaff field refs.
int init_qp
pic_init_qp_minus26 + 26
int direct_8x8_inference_flag
#define FF_DXVA2_WORKAROUND_SCALING_LIST_ZIGZAG
Work around for DXVA2 and old UVD/UVD+ ATI video cards.
static int is_slice_short(struct dxva_context *ctx)
static void fill_picture_parameters(struct dxva_context *ctx, const H264Context *h, DXVA_PicParams_H264 *pp)
DXVA_Slice_H264_Long slice_long[MAX_SLICES]
unsigned report_id
Private to the FFmpeg AVHWAccel implementation.
int pic_order_present
pic_order_present_flag
int chroma_log2_weight_denom
static void fill_slice_short(DXVA_Slice_H264_Short *slice, unsigned position, unsigned size)
static int get_refpic_index(const DXVA_PicParams_H264 *pp, int surface_index)
H264 / AVC / MPEG4 part10 codec data table
int slice_alpha_c0_offset
static const uint8_t zigzag_scan[16+1]
H264Picture * short_ref[32]
int field_poc[2]
top/bottom POC
main external API structure.
H264Picture * cur_pic_ptr
const uint8_t ff_zigzag_direct[64]
int log2_max_poc_lsb
log2_max_pic_order_cnt_lsb_minus4
HW decoding through DXVA2, Picture.data[3] contains a LPDIRECT3DSURFACE9 pointer. ...
static int dxva2_h264_decode_slice(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size)
static const uint8_t start_code[]
void ff_h264_draw_horiz_band(H264Context *h, int y, int height)
int transform_8x8_mode
transform_8x8_mode_flag
const uint8_t * bitstream
int init_qs
pic_init_qs_minus26 + 26
int pic_id
pic_num (short -> no wrap version of pic_num, pic_num & max_pic_num; long -> long_pic_num) ...
int log2_max_frame_num
log2_max_frame_num_minus4 + 4
int bit_depth_luma
bit_depth_luma_minus8 + 8
static int dxva2_h264_start_frame(AVCodecContext *avctx, av_unused const uint8_t *buffer, av_unused uint32_t size)
static int dxva2_h264_end_frame(AVCodecContext *avctx)
int current_slice
current slice number, used to initialize slice_num of each thread/context
int slice_group_count
num_slice_groups_minus1 + 1
int chroma_weight_flag[2]
7.4.3.2 chroma_weight_lX_flag
IDirectXVideoDecoder * decoder
DXVA2 decoder object.
int deblocking_filter
disable_deblocking_filter_idc with 1 <-> 0
DXVA_Slice_H264_Short slice_short[MAX_SLICES]
static void fill_picture_entry(DXVA_PicEntry_H264 *pic, unsigned index, unsigned flag)
This structure is used to provides the necessary configurations and data to the DXVA2 FFmpeg HWAccel ...
int short_ref_count
number of actual short term references
int mb_slice_group_map_type