1 /*
2 * DXVA2 HEVC HW acceleration.
3 *
4 * copyright (c) 2014 - 2015 Hendrik Leppkes
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 "config_components.h"
24
25 #include "libavutil/avassert.h"
26
27 #include "dxva2_internal.h"
28 #include "hevc_data.h"
29 #include "hevcdec.h"
30
31 #define MAX_SLICES 256
32
33 struct hevc_dxva2_picture_context {
34 DXVA_PicParams_HEVC pp;
35 DXVA_Qmatrix_HEVC qm;
36 unsigned slice_count;
37 DXVA_Slice_HEVC_Short slice_short[MAX_SLICES];
38 const uint8_t *bitstream;
39 unsigned bitstream_size;
40 };
41
fill_picture_entry(DXVA_PicEntry_HEVC *pic, unsigned index, unsigned flag)42 static void fill_picture_entry(DXVA_PicEntry_HEVC *pic,
43 unsigned index, unsigned flag)
44 {
45 av_assert0((index & 0x7f) == index && (flag & 0x01) == flag);
46 pic->bPicEntry = index | (flag << 7);
47 }
48
get_refpic_index(const DXVA_PicParams_HEVC *pp, int surface_index)49 static int get_refpic_index(const DXVA_PicParams_HEVC *pp, int surface_index)
50 {
51 int i;
52 for (i = 0; i < FF_ARRAY_ELEMS(pp->RefPicList); i++) {
53 if ((pp->RefPicList[i].bPicEntry & 0x7f) == surface_index)
54 return i;
55 }
56 return 0xff;
57 }
58
fill_picture_parameters(const AVCodecContext *avctx, AVDXVAContext *ctx, const HEVCContext *h, DXVA_PicParams_HEVC *pp)59 static void fill_picture_parameters(const AVCodecContext *avctx, AVDXVAContext *ctx, const HEVCContext *h,
60 DXVA_PicParams_HEVC *pp)
61 {
62 const HEVCFrame *current_picture = h->ref;
63 const HEVCSPS *sps = h->ps.sps;
64 const HEVCPPS *pps = h->ps.pps;
65 int i, j;
66
67 memset(pp, 0, sizeof(*pp));
68
69 pp->PicWidthInMinCbsY = sps->min_cb_width;
70 pp->PicHeightInMinCbsY = sps->min_cb_height;
71
72 pp->wFormatAndSequenceInfoFlags = (sps->chroma_format_idc << 0) |
73 (sps->separate_colour_plane_flag << 2) |
74 ((sps->bit_depth - 8) << 3) |
75 ((sps->bit_depth - 8) << 6) |
76 ((sps->log2_max_poc_lsb - 4) << 9) |
77 (0 << 13) |
78 (0 << 14) |
79 (0 << 15);
80
81 fill_picture_entry(&pp->CurrPic, ff_dxva2_get_surface_index(avctx, ctx, current_picture->frame), 0);
82
83 pp->sps_max_dec_pic_buffering_minus1 = sps->temporal_layer[sps->max_sub_layers - 1].max_dec_pic_buffering - 1;
84 pp->log2_min_luma_coding_block_size_minus3 = sps->log2_min_cb_size - 3;
85 pp->log2_diff_max_min_luma_coding_block_size = sps->log2_diff_max_min_coding_block_size;
86 pp->log2_min_transform_block_size_minus2 = sps->log2_min_tb_size - 2;
87 pp->log2_diff_max_min_transform_block_size = sps->log2_max_trafo_size - sps->log2_min_tb_size;
88 pp->max_transform_hierarchy_depth_inter = sps->max_transform_hierarchy_depth_inter;
89 pp->max_transform_hierarchy_depth_intra = sps->max_transform_hierarchy_depth_intra;
90 pp->num_short_term_ref_pic_sets = sps->nb_st_rps;
91 pp->num_long_term_ref_pics_sps = sps->num_long_term_ref_pics_sps;
92
93 pp->num_ref_idx_l0_default_active_minus1 = pps->num_ref_idx_l0_default_active - 1;
94 pp->num_ref_idx_l1_default_active_minus1 = pps->num_ref_idx_l1_default_active - 1;
95 pp->init_qp_minus26 = pps->pic_init_qp_minus26;
96
97 if (h->sh.short_term_ref_pic_set_sps_flag == 0 && h->sh.short_term_rps) {
98 pp->ucNumDeltaPocsOfRefRpsIdx = h->sh.short_term_rps->rps_idx_num_delta_pocs;
99 pp->wNumBitsForShortTermRPSInSlice = h->sh.short_term_ref_pic_set_size;
100 }
101
102 pp->dwCodingParamToolFlags = (sps->scaling_list_enable_flag << 0) |
103 (sps->amp_enabled_flag << 1) |
104 (sps->sao_enabled << 2) |
105 (sps->pcm_enabled_flag << 3) |
106 ((sps->pcm_enabled_flag ? (sps->pcm.bit_depth - 1) : 0) << 4) |
107 ((sps->pcm_enabled_flag ? (sps->pcm.bit_depth_chroma - 1) : 0) << 8) |
108 ((sps->pcm_enabled_flag ? (sps->pcm.log2_min_pcm_cb_size - 3) : 0) << 12) |
109 ((sps->pcm_enabled_flag ? (sps->pcm.log2_max_pcm_cb_size - sps->pcm.log2_min_pcm_cb_size) : 0) << 14) |
110 (sps->pcm.loop_filter_disable_flag << 16) |
111 (sps->long_term_ref_pics_present_flag << 17) |
112 (sps->sps_temporal_mvp_enabled_flag << 18) |
113 (sps->sps_strong_intra_smoothing_enable_flag << 19) |
114 (pps->dependent_slice_segments_enabled_flag << 20) |
115 (pps->output_flag_present_flag << 21) |
116 (pps->num_extra_slice_header_bits << 22) |
117 (pps->sign_data_hiding_flag << 25) |
118 (pps->cabac_init_present_flag << 26) |
119 (0 << 27);
120
121 pp->dwCodingSettingPicturePropertyFlags = (pps->constrained_intra_pred_flag << 0) |
122 (pps->transform_skip_enabled_flag << 1) |
123 (pps->cu_qp_delta_enabled_flag << 2) |
124 (pps->pic_slice_level_chroma_qp_offsets_present_flag << 3) |
125 (pps->weighted_pred_flag << 4) |
126 (pps->weighted_bipred_flag << 5) |
127 (pps->transquant_bypass_enable_flag << 6) |
128 (pps->tiles_enabled_flag << 7) |
129 (pps->entropy_coding_sync_enabled_flag << 8) |
130 (pps->uniform_spacing_flag << 9) |
131 ((pps->tiles_enabled_flag ? pps->loop_filter_across_tiles_enabled_flag : 0) << 10) |
132 (pps->seq_loop_filter_across_slices_enabled_flag << 11) |
133 (pps->deblocking_filter_override_enabled_flag << 12) |
134 (pps->disable_dbf << 13) |
135 (pps->lists_modification_present_flag << 14) |
136 (pps->slice_header_extension_present_flag << 15) |
137 (IS_IRAP(h) << 16) |
138 (IS_IDR(h) << 17) |
139 /* IntraPicFlag */
140 (IS_IRAP(h) << 18) |
141 (0 << 19);
142 pp->pps_cb_qp_offset = pps->cb_qp_offset;
143 pp->pps_cr_qp_offset = pps->cr_qp_offset;
144 if (pps->tiles_enabled_flag) {
145 pp->num_tile_columns_minus1 = pps->num_tile_columns - 1;
146 pp->num_tile_rows_minus1 = pps->num_tile_rows - 1;
147
148 if (!pps->uniform_spacing_flag) {
149 for (i = 0; i < pps->num_tile_columns; i++)
150 pp->column_width_minus1[i] = pps->column_width[i] - 1;
151
152 for (i = 0; i < pps->num_tile_rows; i++)
153 pp->row_height_minus1[i] = pps->row_height[i] - 1;
154 }
155 }
156
157 pp->diff_cu_qp_delta_depth = pps->diff_cu_qp_delta_depth;
158 pp->pps_beta_offset_div2 = pps->beta_offset / 2;
159 pp->pps_tc_offset_div2 = pps->tc_offset / 2;
160 pp->log2_parallel_merge_level_minus2 = pps->log2_parallel_merge_level - 2;
161 pp->CurrPicOrderCntVal = h->poc;
162
163 // fill RefPicList from the DPB
164 for (i = 0, j = 0; i < FF_ARRAY_ELEMS(pp->RefPicList); i++) {
165 const HEVCFrame *frame = NULL;
166 while (!frame && j < FF_ARRAY_ELEMS(h->DPB)) {
167 if (&h->DPB[j] != current_picture && (h->DPB[j].flags & (HEVC_FRAME_FLAG_LONG_REF | HEVC_FRAME_FLAG_SHORT_REF)))
168 frame = &h->DPB[j];
169 j++;
170 }
171
172 if (frame) {
173 fill_picture_entry(&pp->RefPicList[i], ff_dxva2_get_surface_index(avctx, ctx, frame->frame), !!(frame->flags & HEVC_FRAME_FLAG_LONG_REF));
174 pp->PicOrderCntValList[i] = frame->poc;
175 } else {
176 pp->RefPicList[i].bPicEntry = 0xff;
177 pp->PicOrderCntValList[i] = 0;
178 }
179 }
180
181 #define DO_REF_LIST(ref_idx, ref_list) { \
182 const RefPicList *rpl = &h->rps[ref_idx]; \
183 for (i = 0, j = 0; i < FF_ARRAY_ELEMS(pp->ref_list); i++) { \
184 const HEVCFrame *frame = NULL; \
185 while (!frame && j < rpl->nb_refs) \
186 frame = rpl->ref[j++]; \
187 if (frame && frame->flags & (HEVC_FRAME_FLAG_LONG_REF | HEVC_FRAME_FLAG_SHORT_REF)) \
188 pp->ref_list[i] = get_refpic_index(pp, ff_dxva2_get_surface_index(avctx, ctx, frame->frame)); \
189 else \
190 pp->ref_list[i] = 0xff; \
191 } \
192 }
193
194 // Fill short term and long term lists
195 DO_REF_LIST(ST_CURR_BEF, RefPicSetStCurrBefore);
196 DO_REF_LIST(ST_CURR_AFT, RefPicSetStCurrAfter);
197 DO_REF_LIST(LT_CURR, RefPicSetLtCurr);
198
199 pp->StatusReportFeedbackNumber = 1 + DXVA_CONTEXT_REPORT_ID(avctx, ctx)++;
200 }
201
fill_scaling_lists(AVDXVAContext *ctx, const HEVCContext *h, DXVA_Qmatrix_HEVC *qm)202 static void fill_scaling_lists(AVDXVAContext *ctx, const HEVCContext *h, DXVA_Qmatrix_HEVC *qm)
203 {
204 unsigned i, j, pos;
205 const ScalingList *sl = h->ps.pps->scaling_list_data_present_flag ?
206 &h->ps.pps->scaling_list : &h->ps.sps->scaling_list;
207
208 memset(qm, 0, sizeof(*qm));
209 for (i = 0; i < 6; i++) {
210 for (j = 0; j < 16; j++) {
211 pos = 4 * ff_hevc_diag_scan4x4_y[j] + ff_hevc_diag_scan4x4_x[j];
212 qm->ucScalingLists0[i][j] = sl->sl[0][i][pos];
213 }
214
215 for (j = 0; j < 64; j++) {
216 pos = 8 * ff_hevc_diag_scan8x8_y[j] + ff_hevc_diag_scan8x8_x[j];
217 qm->ucScalingLists1[i][j] = sl->sl[1][i][pos];
218 qm->ucScalingLists2[i][j] = sl->sl[2][i][pos];
219
220 if (i < 2)
221 qm->ucScalingLists3[i][j] = sl->sl[3][i * 3][pos];
222 }
223
224 qm->ucScalingListDCCoefSizeID2[i] = sl->sl_dc[0][i];
225 if (i < 2)
226 qm->ucScalingListDCCoefSizeID3[i] = sl->sl_dc[1][i * 3];
227 }
228 }
229
fill_slice_short(DXVA_Slice_HEVC_Short *slice, unsigned position, unsigned size)230 static void fill_slice_short(DXVA_Slice_HEVC_Short *slice,
231 unsigned position, unsigned size)
232 {
233 memset(slice, 0, sizeof(*slice));
234 slice->BSNALunitDataLocation = position;
235 slice->SliceBytesInBuffer = size;
236 slice->wBadSliceChopping = 0;
237 }
238
commit_bitstream_and_slice_buffer(AVCodecContext *avctx, DECODER_BUFFER_DESC *bs, DECODER_BUFFER_DESC *sc)239 static int commit_bitstream_and_slice_buffer(AVCodecContext *avctx,
240 DECODER_BUFFER_DESC *bs,
241 DECODER_BUFFER_DESC *sc)
242 {
243 const HEVCContext *h = avctx->priv_data;
244 AVDXVAContext *ctx = DXVA_CONTEXT(avctx);
245 const HEVCFrame *current_picture = h->ref;
246 struct hevc_dxva2_picture_context *ctx_pic = current_picture->hwaccel_picture_private;
247 DXVA_Slice_HEVC_Short *slice = NULL;
248 void *dxva_data_ptr;
249 uint8_t *dxva_data, *current, *end;
250 unsigned dxva_size;
251 void *slice_data;
252 unsigned slice_size;
253 unsigned padding;
254 unsigned i;
255 unsigned type;
256
257 /* Create an annex B bitstream buffer with only slice NAL and finalize slice */
258 #if CONFIG_D3D11VA
259 if (ff_dxva2_is_d3d11(avctx)) {
260 type = D3D11_VIDEO_DECODER_BUFFER_BITSTREAM;
261 if (FAILED(ID3D11VideoContext_GetDecoderBuffer(D3D11VA_CONTEXT(ctx)->video_context,
262 D3D11VA_CONTEXT(ctx)->decoder,
263 type,
264 &dxva_size, &dxva_data_ptr)))
265 return -1;
266 }
267 #endif
268 #if CONFIG_DXVA2
269 if (avctx->pix_fmt == AV_PIX_FMT_DXVA2_VLD) {
270 type = DXVA2_BitStreamDateBufferType;
271 if (FAILED(IDirectXVideoDecoder_GetBuffer(DXVA2_CONTEXT(ctx)->decoder,
272 type,
273 &dxva_data_ptr, &dxva_size)))
274 return -1;
275 }
276 #endif
277
278 dxva_data = dxva_data_ptr;
279 current = dxva_data;
280 end = dxva_data + dxva_size;
281
282 for (i = 0; i < ctx_pic->slice_count; i++) {
283 static const uint8_t start_code[] = { 0, 0, 1 };
284 static const unsigned start_code_size = sizeof(start_code);
285 unsigned position, size;
286
287 slice = &ctx_pic->slice_short[i];
288
289 position = slice->BSNALunitDataLocation;
290 size = slice->SliceBytesInBuffer;
291 if (start_code_size + size > end - current) {
292 av_log(avctx, AV_LOG_ERROR, "Failed to build bitstream");
293 break;
294 }
295
296 slice->BSNALunitDataLocation = current - dxva_data;
297 slice->SliceBytesInBuffer = start_code_size + size;
298
299 memcpy(current, start_code, start_code_size);
300 current += start_code_size;
301
302 memcpy(current, &ctx_pic->bitstream[position], size);
303 current += size;
304 }
305 padding = FFMIN(128 - ((current - dxva_data) & 127), end - current);
306 if (slice && padding > 0) {
307 memset(current, 0, padding);
308 current += padding;
309
310 slice->SliceBytesInBuffer += padding;
311 }
312 #if CONFIG_D3D11VA
313 if (ff_dxva2_is_d3d11(avctx))
314 if (FAILED(ID3D11VideoContext_ReleaseDecoderBuffer(D3D11VA_CONTEXT(ctx)->video_context, D3D11VA_CONTEXT(ctx)->decoder, type)))
315 return -1;
316 #endif
317 #if CONFIG_DXVA2
318 if (avctx->pix_fmt == AV_PIX_FMT_DXVA2_VLD)
319 if (FAILED(IDirectXVideoDecoder_ReleaseBuffer(DXVA2_CONTEXT(ctx)->decoder, type)))
320 return -1;
321 #endif
322 if (i < ctx_pic->slice_count)
323 return -1;
324
325 #if CONFIG_D3D11VA
326 if (ff_dxva2_is_d3d11(avctx)) {
327 D3D11_VIDEO_DECODER_BUFFER_DESC *dsc11 = bs;
328 memset(dsc11, 0, sizeof(*dsc11));
329 dsc11->BufferType = type;
330 dsc11->DataSize = current - dxva_data;
331 dsc11->NumMBsInBuffer = 0;
332
333 type = D3D11_VIDEO_DECODER_BUFFER_SLICE_CONTROL;
334 }
335 #endif
336 #if CONFIG_DXVA2
337 if (avctx->pix_fmt == AV_PIX_FMT_DXVA2_VLD) {
338 DXVA2_DecodeBufferDesc *dsc2 = bs;
339 memset(dsc2, 0, sizeof(*dsc2));
340 dsc2->CompressedBufferType = type;
341 dsc2->DataSize = current - dxva_data;
342 dsc2->NumMBsInBuffer = 0;
343
344 type = DXVA2_SliceControlBufferType;
345 }
346 #endif
347
348 slice_data = ctx_pic->slice_short;
349 slice_size = ctx_pic->slice_count * sizeof(*ctx_pic->slice_short);
350
351 av_assert0(((current - dxva_data) & 127) == 0);
352 return ff_dxva2_commit_buffer(avctx, ctx, sc,
353 type,
354 slice_data, slice_size, 0);
355 }
356
357
dxva2_hevc_start_frame(AVCodecContext *avctx, av_unused const uint8_t *buffer, av_unused uint32_t size)358 static int dxva2_hevc_start_frame(AVCodecContext *avctx,
359 av_unused const uint8_t *buffer,
360 av_unused uint32_t size)
361 {
362 const HEVCContext *h = avctx->priv_data;
363 AVDXVAContext *ctx = DXVA_CONTEXT(avctx);
364 struct hevc_dxva2_picture_context *ctx_pic = h->ref->hwaccel_picture_private;
365
366 if (!DXVA_CONTEXT_VALID(avctx, ctx))
367 return -1;
368 av_assert0(ctx_pic);
369
370 /* Fill up DXVA_PicParams_HEVC */
371 fill_picture_parameters(avctx, ctx, h, &ctx_pic->pp);
372
373 /* Fill up DXVA_Qmatrix_HEVC */
374 fill_scaling_lists(ctx, h, &ctx_pic->qm);
375
376 ctx_pic->slice_count = 0;
377 ctx_pic->bitstream_size = 0;
378 ctx_pic->bitstream = NULL;
379 return 0;
380 }
381
dxva2_hevc_decode_slice(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size)382 static int dxva2_hevc_decode_slice(AVCodecContext *avctx,
383 const uint8_t *buffer,
384 uint32_t size)
385 {
386 const HEVCContext *h = avctx->priv_data;
387 const HEVCFrame *current_picture = h->ref;
388 struct hevc_dxva2_picture_context *ctx_pic = current_picture->hwaccel_picture_private;
389 unsigned position;
390
391 if (ctx_pic->slice_count >= MAX_SLICES)
392 return -1;
393
394 if (!ctx_pic->bitstream)
395 ctx_pic->bitstream = buffer;
396 ctx_pic->bitstream_size += size;
397
398 position = buffer - ctx_pic->bitstream;
399 fill_slice_short(&ctx_pic->slice_short[ctx_pic->slice_count], position, size);
400 ctx_pic->slice_count++;
401
402 return 0;
403 }
404
dxva2_hevc_end_frame(AVCodecContext *avctx)405 static int dxva2_hevc_end_frame(AVCodecContext *avctx)
406 {
407 HEVCContext *h = avctx->priv_data;
408 struct hevc_dxva2_picture_context *ctx_pic = h->ref->hwaccel_picture_private;
409 int scale = ctx_pic->pp.dwCodingParamToolFlags & 1;
410 int ret;
411
412 if (ctx_pic->slice_count <= 0 || ctx_pic->bitstream_size <= 0)
413 return -1;
414
415 ret = ff_dxva2_common_end_frame(avctx, h->ref->frame,
416 &ctx_pic->pp, sizeof(ctx_pic->pp),
417 scale ? &ctx_pic->qm : NULL, scale ? sizeof(ctx_pic->qm) : 0,
418 commit_bitstream_and_slice_buffer);
419 return ret;
420 }
421
422 #if CONFIG_HEVC_DXVA2_HWACCEL
423 const AVHWAccel ff_hevc_dxva2_hwaccel = {
424 .name = "hevc_dxva2",
425 .type = AVMEDIA_TYPE_VIDEO,
426 .id = AV_CODEC_ID_HEVC,
427 .pix_fmt = AV_PIX_FMT_DXVA2_VLD,
428 .init = ff_dxva2_decode_init,
429 .uninit = ff_dxva2_decode_uninit,
430 .start_frame = dxva2_hevc_start_frame,
431 .decode_slice = dxva2_hevc_decode_slice,
432 .end_frame = dxva2_hevc_end_frame,
433 .frame_params = ff_dxva2_common_frame_params,
434 .frame_priv_data_size = sizeof(struct hevc_dxva2_picture_context),
435 .priv_data_size = sizeof(FFDXVASharedContext),
436 };
437 #endif
438
439 #if CONFIG_HEVC_D3D11VA_HWACCEL
440 const AVHWAccel ff_hevc_d3d11va_hwaccel = {
441 .name = "hevc_d3d11va",
442 .type = AVMEDIA_TYPE_VIDEO,
443 .id = AV_CODEC_ID_HEVC,
444 .pix_fmt = AV_PIX_FMT_D3D11VA_VLD,
445 .init = ff_dxva2_decode_init,
446 .uninit = ff_dxva2_decode_uninit,
447 .start_frame = dxva2_hevc_start_frame,
448 .decode_slice = dxva2_hevc_decode_slice,
449 .end_frame = dxva2_hevc_end_frame,
450 .frame_params = ff_dxva2_common_frame_params,
451 .frame_priv_data_size = sizeof(struct hevc_dxva2_picture_context),
452 .priv_data_size = sizeof(FFDXVASharedContext),
453 };
454 #endif
455
456 #if CONFIG_HEVC_D3D11VA2_HWACCEL
457 const AVHWAccel ff_hevc_d3d11va2_hwaccel = {
458 .name = "hevc_d3d11va2",
459 .type = AVMEDIA_TYPE_VIDEO,
460 .id = AV_CODEC_ID_HEVC,
461 .pix_fmt = AV_PIX_FMT_D3D11,
462 .init = ff_dxva2_decode_init,
463 .uninit = ff_dxva2_decode_uninit,
464 .start_frame = dxva2_hevc_start_frame,
465 .decode_slice = dxva2_hevc_decode_slice,
466 .end_frame = dxva2_hevc_end_frame,
467 .frame_params = ff_dxva2_common_frame_params,
468 .frame_priv_data_size = sizeof(struct hevc_dxva2_picture_context),
469 .priv_data_size = sizeof(FFDXVASharedContext),
470 };
471 #endif
472