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vaapi_h264.c
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1 /*
2  * H.264 HW decode acceleration through VA API
3  *
4  * Copyright (C) 2008-2009 Splitted-Desktop Systems
5  *
6  * This file is part of FFmpeg.
7  *
8  * FFmpeg is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License as published by the Free Software Foundation; either
11  * version 2.1 of the License, or (at your option) any later version.
12  *
13  * FFmpeg is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with FFmpeg; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  */
22 
23 #include "h264dec.h"
24 #include "h264_ps.h"
25 #include "vaapi_decode.h"
26 
27 /**
28  * @file
29  * This file implements the glue code between FFmpeg's and VA API's
30  * structures for H.264 decoding.
31  */
32 
33 /**
34  * Initialize an empty VA API picture.
35  *
36  * VA API requires a fixed-size reference picture array.
37  */
38 static void init_vaapi_pic(VAPictureH264 *va_pic)
39 {
40  va_pic->picture_id = VA_INVALID_ID;
41  va_pic->flags = VA_PICTURE_H264_INVALID;
42  va_pic->TopFieldOrderCnt = 0;
43  va_pic->BottomFieldOrderCnt = 0;
44 }
45 
46 /**
47  * Translate an FFmpeg Picture into its VA API form.
48  *
49  * @param[out] va_pic A pointer to VA API's own picture struct
50  * @param[in] pic A pointer to the FFmpeg picture struct to convert
51  * @param[in] pic_structure The picture field type (as defined in mpegvideo.h),
52  * supersedes pic's field type if nonzero.
53  */
54 static void fill_vaapi_pic(VAPictureH264 *va_pic,
55  const H264Picture *pic,
56  int pic_structure)
57 {
58  if (pic_structure == 0)
59  pic_structure = pic->reference;
60  pic_structure &= PICT_FRAME; /* PICT_TOP_FIELD|PICT_BOTTOM_FIELD */
61 
62  va_pic->picture_id = ff_vaapi_get_surface_id(pic->f);
63  va_pic->frame_idx = pic->long_ref ? pic->pic_id : pic->frame_num;
64 
65  va_pic->flags = 0;
66  if (pic_structure != PICT_FRAME)
67  va_pic->flags |= (pic_structure & PICT_TOP_FIELD) ? VA_PICTURE_H264_TOP_FIELD : VA_PICTURE_H264_BOTTOM_FIELD;
68  if (pic->reference)
69  va_pic->flags |= pic->long_ref ? VA_PICTURE_H264_LONG_TERM_REFERENCE : VA_PICTURE_H264_SHORT_TERM_REFERENCE;
70 
71  va_pic->TopFieldOrderCnt = 0;
72  if (pic->field_poc[0] != INT_MAX)
73  va_pic->TopFieldOrderCnt = pic->field_poc[0];
74 
75  va_pic->BottomFieldOrderCnt = 0;
76  if (pic->field_poc[1] != INT_MAX)
77  va_pic->BottomFieldOrderCnt = pic->field_poc[1];
78 }
79 
80 /** Decoded Picture Buffer (DPB). */
81 typedef struct DPB {
82  int size; ///< Current number of reference frames in the DPB
83  int max_size; ///< Max number of reference frames. This is FF_ARRAY_ELEMS(VAPictureParameterBufferH264.ReferenceFrames)
84  VAPictureH264 *va_pics; ///< Pointer to VAPictureParameterBufferH264.ReferenceFrames array
85 } DPB;
86 
87 /**
88  * Append picture to the decoded picture buffer, in a VA API form that
89  * merges the second field picture attributes with the first, if
90  * available. The decoded picture buffer's size must be large enough
91  * to receive the new VA API picture object.
92  */
93 static int dpb_add(DPB *dpb, const H264Picture *pic)
94 {
95  int i;
96 
97  if (dpb->size >= dpb->max_size)
98  return -1;
99 
100  for (i = 0; i < dpb->size; i++) {
101  VAPictureH264 * const va_pic = &dpb->va_pics[i];
102  if (va_pic->picture_id == ff_vaapi_get_surface_id(pic->f)) {
103  VAPictureH264 temp_va_pic;
104  fill_vaapi_pic(&temp_va_pic, pic, 0);
105 
106  if ((temp_va_pic.flags ^ va_pic->flags) & (VA_PICTURE_H264_TOP_FIELD | VA_PICTURE_H264_BOTTOM_FIELD)) {
107  va_pic->flags |= temp_va_pic.flags & (VA_PICTURE_H264_TOP_FIELD | VA_PICTURE_H264_BOTTOM_FIELD);
108  /* Merge second field */
109  if (temp_va_pic.flags & VA_PICTURE_H264_TOP_FIELD) {
110  va_pic->TopFieldOrderCnt = temp_va_pic.TopFieldOrderCnt;
111  } else {
112  va_pic->BottomFieldOrderCnt = temp_va_pic.BottomFieldOrderCnt;
113  }
114  }
115  return 0;
116  }
117  }
118 
119  fill_vaapi_pic(&dpb->va_pics[dpb->size++], pic, 0);
120  return 0;
121 }
122 
123 /** Fill in VA API reference frames array. */
124 static int fill_vaapi_ReferenceFrames(VAPictureParameterBufferH264 *pic_param,
125  const H264Context *h)
126 {
127  DPB dpb;
128  int i;
129 
130  dpb.size = 0;
131  dpb.max_size = FF_ARRAY_ELEMS(pic_param->ReferenceFrames);
132  dpb.va_pics = pic_param->ReferenceFrames;
133  for (i = 0; i < dpb.max_size; i++)
134  init_vaapi_pic(&dpb.va_pics[i]);
135 
136  for (i = 0; i < h->short_ref_count; i++) {
137  const H264Picture *pic = h->short_ref[i];
138  if (pic && pic->reference && dpb_add(&dpb, pic) < 0)
139  return -1;
140  }
141 
142  for (i = 0; i < 16; i++) {
143  const H264Picture *pic = h->long_ref[i];
144  if (pic && pic->reference && dpb_add(&dpb, pic) < 0)
145  return -1;
146  }
147  return 0;
148 }
149 
150 /**
151  * Fill in VA API reference picture lists from the FFmpeg reference
152  * picture list.
153  *
154  * @param[out] RefPicList VA API internal reference picture list
155  * @param[in] ref_list A pointer to the FFmpeg reference list
156  * @param[in] ref_count The number of reference pictures in ref_list
157  */
158 static void fill_vaapi_RefPicList(VAPictureH264 RefPicList[32],
159  const H264Ref *ref_list,
160  unsigned int ref_count)
161 {
162  unsigned int i, n = 0;
163  for (i = 0; i < ref_count; i++)
164  if (ref_list[i].reference)
165  fill_vaapi_pic(&RefPicList[n++], ref_list[i].parent,
166  ref_list[i].reference);
167 
168  for (; n < 32; n++)
169  init_vaapi_pic(&RefPicList[n]);
170 }
171 
172 /**
173  * Fill in prediction weight table.
174  *
175  * VA API requires a plain prediction weight table as it does not infer
176  * any value.
177  *
178  * @param[in] h A pointer to the current H.264 context
179  * @param[in] list The reference frame list index to use
180  * @param[out] luma_weight_flag VA API plain luma weight flag
181  * @param[out] luma_weight VA API plain luma weight table
182  * @param[out] luma_offset VA API plain luma offset table
183  * @param[out] chroma_weight_flag VA API plain chroma weight flag
184  * @param[out] chroma_weight VA API plain chroma weight table
185  * @param[out] chroma_offset VA API plain chroma offset table
186  */
188  int list,
189  unsigned char *luma_weight_flag,
190  short luma_weight[32],
191  short luma_offset[32],
192  unsigned char *chroma_weight_flag,
193  short chroma_weight[32][2],
194  short chroma_offset[32][2])
195 {
196  const H264SliceContext *sl = &h->slice_ctx[0];
197  unsigned int i, j;
198 
199  *luma_weight_flag = sl->pwt.luma_weight_flag[list];
200  *chroma_weight_flag = sl->pwt.chroma_weight_flag[list];
201 
202  for (i = 0; i < sl->ref_count[list]; i++) {
203  /* VA API also wants the inferred (default) values, not
204  only what is available in the bitstream (7.4.3.2). */
205  if (sl->pwt.luma_weight_flag[list]) {
206  luma_weight[i] = sl->pwt.luma_weight[i][list][0];
207  luma_offset[i] = sl->pwt.luma_weight[i][list][1];
208  } else {
209  luma_weight[i] = 1 << sl->pwt.luma_log2_weight_denom;
210  luma_offset[i] = 0;
211  }
212  for (j = 0; j < 2; j++) {
213  if (sl->pwt.chroma_weight_flag[list]) {
214  chroma_weight[i][j] = sl->pwt.chroma_weight[i][list][j][0];
215  chroma_offset[i][j] = sl->pwt.chroma_weight[i][list][j][1];
216  } else {
217  chroma_weight[i][j] = 1 << sl->pwt.chroma_log2_weight_denom;
218  chroma_offset[i][j] = 0;
219  }
220  }
221  }
222 }
223 
224 /** Initialize and start decoding a frame with VA API. */
226  av_unused const uint8_t *buffer,
227  av_unused uint32_t size)
228 {
229  const H264Context *h = avctx->priv_data;
231  const PPS *pps = h->ps.pps;
232  const SPS *sps = h->ps.sps;
233  VAPictureParameterBufferH264 pic_param;
234  VAIQMatrixBufferH264 iq_matrix;
235  int err;
236 
238 
239  pic_param = (VAPictureParameterBufferH264) {
240  .picture_width_in_mbs_minus1 = h->mb_width - 1,
241  .picture_height_in_mbs_minus1 = h->mb_height - 1,
242  .bit_depth_luma_minus8 = sps->bit_depth_luma - 8,
243  .bit_depth_chroma_minus8 = sps->bit_depth_chroma - 8,
244  .num_ref_frames = sps->ref_frame_count,
245  .seq_fields.bits = {
246  .chroma_format_idc = sps->chroma_format_idc,
247  .residual_colour_transform_flag = sps->residual_color_transform_flag,
248  .gaps_in_frame_num_value_allowed_flag = sps->gaps_in_frame_num_allowed_flag,
249  .frame_mbs_only_flag = sps->frame_mbs_only_flag,
250  .mb_adaptive_frame_field_flag = sps->mb_aff,
251  .direct_8x8_inference_flag = sps->direct_8x8_inference_flag,
252  .MinLumaBiPredSize8x8 = sps->level_idc >= 31, /* A.3.3.2 */
253  .log2_max_frame_num_minus4 = sps->log2_max_frame_num - 4,
254  .pic_order_cnt_type = sps->poc_type,
255  .log2_max_pic_order_cnt_lsb_minus4 = sps->log2_max_poc_lsb - 4,
256  .delta_pic_order_always_zero_flag = sps->delta_pic_order_always_zero_flag,
257  },
258  .num_slice_groups_minus1 = pps->slice_group_count - 1,
259  .slice_group_map_type = pps->mb_slice_group_map_type,
260  .slice_group_change_rate_minus1 = 0, /* FMO is not implemented */
261  .pic_init_qp_minus26 = pps->init_qp - 26,
262  .pic_init_qs_minus26 = pps->init_qs - 26,
263  .chroma_qp_index_offset = pps->chroma_qp_index_offset[0],
264  .second_chroma_qp_index_offset = pps->chroma_qp_index_offset[1],
265  .pic_fields.bits = {
266  .entropy_coding_mode_flag = pps->cabac,
267  .weighted_pred_flag = pps->weighted_pred,
268  .weighted_bipred_idc = pps->weighted_bipred_idc,
269  .transform_8x8_mode_flag = pps->transform_8x8_mode,
270  .field_pic_flag = h->picture_structure != PICT_FRAME,
271  .constrained_intra_pred_flag = pps->constrained_intra_pred,
272  .pic_order_present_flag = pps->pic_order_present,
273  .deblocking_filter_control_present_flag = pps->deblocking_filter_parameters_present,
274  .redundant_pic_cnt_present_flag = pps->redundant_pic_cnt_present,
275  .reference_pic_flag = h->nal_ref_idc != 0,
276  },
277  .frame_num = h->poc.frame_num,
278  };
279 
280  fill_vaapi_pic(&pic_param.CurrPic, h->cur_pic_ptr, h->picture_structure);
281  err = fill_vaapi_ReferenceFrames(&pic_param, h);
282  if (err < 0)
283  goto fail;
284 
285  err = ff_vaapi_decode_make_param_buffer(avctx, pic,
286  VAPictureParameterBufferType,
287  &pic_param, sizeof(pic_param));
288  if (err < 0)
289  goto fail;
290 
291  memcpy(iq_matrix.ScalingList4x4,
292  pps->scaling_matrix4, sizeof(iq_matrix.ScalingList4x4));
293  memcpy(iq_matrix.ScalingList8x8[0],
294  pps->scaling_matrix8[0], sizeof(iq_matrix.ScalingList8x8[0]));
295  memcpy(iq_matrix.ScalingList8x8[1],
296  pps->scaling_matrix8[3], sizeof(iq_matrix.ScalingList8x8[0]));
297 
298  err = ff_vaapi_decode_make_param_buffer(avctx, pic,
299  VAIQMatrixBufferType,
300  &iq_matrix, sizeof(iq_matrix));
301  if (err < 0)
302  goto fail;
303 
304  return 0;
305 
306 fail:
307  ff_vaapi_decode_cancel(avctx, pic);
308  return err;
309 }
310 
311 /** End a hardware decoding based frame. */
313 {
314  const H264Context *h = avctx->priv_data;
316  H264SliceContext *sl = &h->slice_ctx[0];
317  int ret;
318 
319  ret = ff_vaapi_decode_issue(avctx, pic);
320  if (ret < 0)
321  goto finish;
322 
323  ff_h264_draw_horiz_band(h, sl, 0, h->avctx->height);
324 
325 finish:
326  return ret;
327 }
328 
329 /** Decode the given H.264 slice with VA API. */
331  const uint8_t *buffer,
332  uint32_t size)
333 {
334  const H264Context *h = avctx->priv_data;
336  const H264SliceContext *sl = &h->slice_ctx[0];
337  VASliceParameterBufferH264 slice_param;
338  int err;
339 
340  slice_param = (VASliceParameterBufferH264) {
341  .slice_data_size = size,
342  .slice_data_offset = 0,
343  .slice_data_flag = VA_SLICE_DATA_FLAG_ALL,
344  .slice_data_bit_offset = get_bits_count(&sl->gb),
345  .first_mb_in_slice = (sl->mb_y >> FIELD_OR_MBAFF_PICTURE(h)) * h->mb_width + sl->mb_x,
346  .slice_type = ff_h264_get_slice_type(sl),
347  .direct_spatial_mv_pred_flag = sl->slice_type == AV_PICTURE_TYPE_B ? sl->direct_spatial_mv_pred : 0,
348  .num_ref_idx_l0_active_minus1 = sl->list_count > 0 ? sl->ref_count[0] - 1 : 0,
349  .num_ref_idx_l1_active_minus1 = sl->list_count > 1 ? sl->ref_count[1] - 1 : 0,
350  .cabac_init_idc = sl->cabac_init_idc,
351  .slice_qp_delta = sl->qscale - h->ps.pps->init_qp,
352  .disable_deblocking_filter_idc = sl->deblocking_filter < 2 ? !sl->deblocking_filter : sl->deblocking_filter,
353  .slice_alpha_c0_offset_div2 = sl->slice_alpha_c0_offset / 2,
354  .slice_beta_offset_div2 = sl->slice_beta_offset / 2,
355  .luma_log2_weight_denom = sl->pwt.luma_log2_weight_denom,
356  .chroma_log2_weight_denom = sl->pwt.chroma_log2_weight_denom,
357  };
358 
359  fill_vaapi_RefPicList(slice_param.RefPicList0, sl->ref_list[0],
360  sl->list_count > 0 ? sl->ref_count[0] : 0);
361  fill_vaapi_RefPicList(slice_param.RefPicList1, sl->ref_list[1],
362  sl->list_count > 1 ? sl->ref_count[1] : 0);
363 
365  &slice_param.luma_weight_l0_flag,
366  slice_param.luma_weight_l0,
367  slice_param.luma_offset_l0,
368  &slice_param.chroma_weight_l0_flag,
369  slice_param.chroma_weight_l0,
370  slice_param.chroma_offset_l0);
372  &slice_param.luma_weight_l1_flag,
373  slice_param.luma_weight_l1,
374  slice_param.luma_offset_l1,
375  &slice_param.chroma_weight_l1_flag,
376  slice_param.chroma_weight_l1,
377  slice_param.chroma_offset_l1);
378 
379  err = ff_vaapi_decode_make_slice_buffer(avctx, pic,
380  &slice_param, sizeof(slice_param),
381  buffer, size);
382  if (err) {
383  ff_vaapi_decode_cancel(avctx, pic);
384  return err;
385  }
386 
387  return 0;
388 }
389 
391  .name = "h264_vaapi",
392  .type = AVMEDIA_TYPE_VIDEO,
393  .id = AV_CODEC_ID_H264,
394  .pix_fmt = AV_PIX_FMT_VAAPI,
395  .start_frame = &vaapi_h264_start_frame,
396  .end_frame = &vaapi_h264_end_frame,
397  .decode_slice = &vaapi_h264_decode_slice,
398  .frame_priv_data_size = sizeof(VAAPIDecodePicture),
401  .priv_data_size = sizeof(VAAPIDecodeContext),
402 };
int chroma_format_idc
Definition: h264_ps.h:47
int long_ref
1->long term reference 0->short term reference
Definition: h264dec.h:154
H264POCContext poc
Definition: h264dec.h:465
int weighted_bipred_idc
Definition: h264_ps.h:116
int chroma_qp_index_offset[2]
Definition: h264_ps.h:119
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
int ff_vaapi_decode_make_param_buffer(AVCodecContext *avctx, VAAPIDecodePicture *pic, int type, const void *data, size_t size)
Definition: vaapi_decode.c:27
int luma_weight_flag[2]
7.4.3.2 luma_weight_lX_flag
Definition: h264_parse.h:35
AVHWAccel ff_h264_vaapi_hwaccel
Definition: vaapi_h264.c:390
int chroma_weight[48][2][2][2]
Definition: h264_parse.h:39
static VASurfaceID ff_vaapi_get_surface_id(AVFrame *pic)
Definition: vaapi_decode.h:35
Sequence parameter set.
Definition: h264_ps.h:43
Picture parameter set.
Definition: h264_ps.h:108
int frame_mbs_only_flag
Definition: h264_ps.h:61
int mb_height
Definition: h264dec.h:440
int max_size
Max number of reference frames. This is FF_ARRAY_ELEMS(VAPictureParameterBufferH264.ReferenceFrames)
Definition: vaapi_h264.c:83
H264Context.
Definition: h264dec.h:341
AVFrame * f
Definition: h264dec.h:129
H264Picture * long_ref[32]
Definition: h264dec.h:469
int picture_structure
Definition: h264dec.h:413
unsigned int ref_count[2]
num_ref_idx_l0/1_active_minus1 + 1
Definition: h264dec.h:271
static int vaapi_h264_decode_slice(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size)
Decode the given H.264 slice with VA API.
Definition: vaapi_h264.c:330
uint8_t scaling_matrix4[6][16]
Definition: h264_ps.h:124
int deblocking_filter_parameters_present
deblocking_filter_parameters_present_flag
Definition: h264_ps.h:120
const PPS * pps
Definition: h264_ps.h:144
int ff_vaapi_decode_uninit(AVCodecContext *avctx)
Definition: vaapi_decode.c:517
uint8_t
static av_cold int uninit(AVCodecContext *avctx)
Definition: crystalhd.c:287
static void fill_vaapi_plain_pred_weight_table(const H264Context *h, int list, unsigned char *luma_weight_flag, short luma_weight[32], short luma_offset[32], unsigned char *chroma_weight_flag, short chroma_weight[32][2], short chroma_offset[32][2])
Fill in prediction weight table.
Definition: vaapi_h264.c:187
int gaps_in_frame_num_allowed_flag
Definition: h264_ps.h:57
int slice_alpha_c0_offset
Definition: h264dec.h:198
int bit_depth_chroma
bit_depth_chroma_minus8 + 8
Definition: h264_ps.h:98
int ff_vaapi_decode_issue(AVCodecContext *avctx, VAAPIDecodePicture *pic)
Definition: vaapi_decode.c:148
int chroma_weight_flag[2]
7.4.3.2 chroma_weight_lX_flag
Definition: h264_parse.h:36
int cabac
entropy_coding_mode_flag
Definition: h264_ps.h:110
static void finish(void)
Definition: movenc.c:344
static int get_bits_count(const GetBitContext *s)
Definition: get_bits.h:199
int redundant_pic_cnt_present
redundant_pic_cnt_present_flag
Definition: h264_ps.h:122
ptrdiff_t size
Definition: opengl_enc.c:101
int luma_weight[48][2][2]
Definition: h264_parse.h:38
void ff_h264_draw_horiz_band(const H264Context *h, H264SliceContext *sl, int y, int height)
Definition: h264dec.c:104
H.264 parameter set handling.
int mb_aff
mb_adaptive_frame_field_flag
Definition: h264_ps.h:62
int chroma_log2_weight_denom
Definition: h264_parse.h:34
int poc_type
pic_order_cnt_type
Definition: h264_ps.h:50
int constrained_intra_pred
constrained_intra_pred_flag
Definition: h264_ps.h:121
void * hwaccel_picture_private
hardware accelerator private data
Definition: h264dec.h:142
int deblocking_filter
disable_deblocking_filter_idc with 1 <-> 0
Definition: h264dec.h:197
int weighted_pred
weighted_pred_flag
Definition: h264_ps.h:115
#define PICT_TOP_FIELD
Definition: mpegutils.h:37
int direct_spatial_mv_pred
Definition: h264dec.h:255
int frame_num
frame_num (raw frame_num from slice header)
Definition: h264dec.h:149
int residual_color_transform_flag
residual_colour_transform_flag
Definition: h264_ps.h:99
int ff_h264_get_slice_type(const H264SliceContext *sl)
Reconstruct bitstream slice_type.
Definition: h264_slice.c:2114
#define fail()
Definition: checkasm.h:85
int delta_pic_order_always_zero_flag
Definition: h264_ps.h:52
static int fill_vaapi_ReferenceFrames(VAPictureParameterBufferH264 *pic_param, const H264Context *h)
Fill in VA API reference frames array.
Definition: vaapi_h264.c:124
static void fill_vaapi_RefPicList(VAPictureH264 RefPicList[32], const H264Ref *ref_list, unsigned int ref_count)
Fill in VA API reference picture lists from the FFmpeg reference picture list.
Definition: vaapi_h264.c:158
uint8_t scaling_matrix8[6][64]
Definition: h264_ps.h:125
int ref_frame_count
num_ref_frames
Definition: h264_ps.h:56
const char * name
Name of the hardware accelerated codec.
Definition: avcodec.h:3771
int reference
Definition: h264dec.h:160
int ff_vaapi_decode_init(AVCodecContext *avctx)
Definition: vaapi_decode.c:421
static int vaapi_h264_end_frame(AVCodecContext *avctx)
End a hardware decoding based frame.
Definition: vaapi_h264.c:312
H264PredWeightTable pwt
Definition: h264dec.h:201
int size
Current number of reference frames in the DPB.
Definition: vaapi_h264.c:82
int init_qp
pic_init_qp_minus26 + 26
Definition: h264_ps.h:117
H.264 / AVC / MPEG-4 part10 codec.
H264SliceContext * slice_ctx
Definition: h264dec.h:354
int direct_8x8_inference_flag
Definition: h264_ps.h:63
int n
Definition: avisynth_c.h:684
#define FIELD_OR_MBAFF_PICTURE(h)
Definition: h264dec.h:91
#define FF_ARRAY_ELEMS(a)
int pic_order_present
pic_order_present_flag
Definition: h264_ps.h:111
VASurfaceID output_surface
Definition: vaapi_decode.h:45
AVCodecContext * avctx
Definition: h264dec.h:343
H264Picture * short_ref[32]
Definition: h264dec.h:468
int field_poc[2]
top/bottom POC
Definition: h264dec.h:147
main external API structure.
Definition: avcodec.h:1690
static void fill_vaapi_pic(VAPictureH264 *va_pic, const H264Picture *pic, int pic_structure)
Translate an FFmpeg Picture into its VA API form.
Definition: vaapi_h264.c:54
static int dpb_add(DPB *dpb, const H264Picture *pic)
Append picture to the decoded picture buffer, in a VA API form that merges the second field picture a...
Definition: vaapi_h264.c:93
H264Picture * cur_pic_ptr
Definition: h264dec.h:350
const SPS * sps
Definition: h264_ps.h:145
int log2_max_poc_lsb
log2_max_pic_order_cnt_lsb_minus4
Definition: h264_ps.h:51
int ff_vaapi_decode_cancel(AVCodecContext *avctx, VAAPIDecodePicture *pic)
Definition: vaapi_decode.c:220
int transform_8x8_mode
transform_8x8_mode_flag
Definition: h264_ps.h:123
unsigned int list_count
Definition: h264dec.h:272
int init_qs
pic_init_qs_minus26 + 26
Definition: h264_ps.h:118
int pic_id
pic_num (short -> no wrap version of pic_num, pic_num & max_pic_num; long -> long_pic_num) ...
Definition: h264dec.h:152
int log2_max_frame_num
log2_max_frame_num_minus4 + 4
Definition: h264_ps.h:49
H264ParamSets ps
Definition: h264dec.h:461
Bi-dir predicted.
Definition: avutil.h:276
int bit_depth_luma
bit_depth_luma_minus8 + 8
Definition: h264_ps.h:97
static int vaapi_h264_start_frame(AVCodecContext *avctx, av_unused const uint8_t *buffer, av_unused uint32_t size)
Initialize and start decoding a frame with VA API.
Definition: vaapi_h264.c:225
void * priv_data
Definition: avcodec.h:1732
#define PICT_FRAME
Definition: mpegutils.h:39
static void init_vaapi_pic(VAPictureH264 *va_pic)
Initialize an empty VA API picture.
Definition: vaapi_h264.c:38
Decoded Picture Buffer (DPB).
Definition: vaapi_h264.c:81
int mb_width
Definition: h264dec.h:440
int slice_group_count
num_slice_groups_minus1 + 1
Definition: h264_ps.h:112
H264Ref ref_list[2][48]
0..15: frame refs, 16..47: mbaff field refs.
Definition: h264dec.h:273
VAPictureH264 * va_pics
Pointer to VAPictureParameterBufferH264.ReferenceFrames array.
Definition: vaapi_h264.c:84
int slice_beta_offset
Definition: h264dec.h:199
int level_idc
Definition: h264_ps.h:46
int ff_vaapi_decode_make_slice_buffer(AVCodecContext *avctx, VAAPIDecodePicture *pic, const void *params_data, size_t params_size, const void *slice_data, size_t slice_size)
Definition: vaapi_decode.c:56
int nal_ref_idc
Definition: h264dec.h:447
GetBitContext gb
Definition: h264dec.h:183
int cabac_init_idc
Definition: h264dec.h:324
GLuint buffer
Definition: opengl_enc.c:102
#define av_unused
Definition: attributes.h:125
int short_ref_count
number of actual short term references
Definition: h264dec.h:484
int mb_slice_group_map_type
Definition: h264_ps.h:113