FFmpeg  4.4.5
nvdec_hevc.c
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1 /*
2  * HEVC HW decode acceleration through NVDEC
3  *
4  * Copyright (c) 2017 Anton Khirnov
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 <stdint.h>
24 #include <string.h>
25 
26 #include "avcodec.h"
27 #include "nvdec.h"
28 #include "decode.h"
29 #include "internal.h"
30 #include "hevcdec.h"
31 #include "hevc_data.h"
32 
33 static void dpb_add(CUVIDHEVCPICPARAMS *pp, int idx, const HEVCFrame *src)
34 {
35  FrameDecodeData *fdd = (FrameDecodeData*)src->frame->private_ref->data;
36  const NVDECFrame *cf = fdd->hwaccel_priv;
37 
38  pp->RefPicIdx[idx] = cf ? cf->idx : -1;
39  pp->PicOrderCntVal[idx] = src->poc;
40  pp->IsLongTerm[idx] = !!(src->flags & HEVC_FRAME_FLAG_LONG_REF);
41 }
42 
43 static void fill_scaling_lists(CUVIDHEVCPICPARAMS *ppc, const HEVCContext *s)
44 {
45  const ScalingList *sl = s->ps.pps->scaling_list_data_present_flag ?
46  &s->ps.pps->scaling_list : &s->ps.sps->scaling_list;
47  int i, j, pos;
48 
49  for (i = 0; i < 6; i++) {
50  for (j = 0; j < 16; j++) {
52  ppc->ScalingList4x4[i][j] = sl->sl[0][i][pos];
53  }
54 
55  for (j = 0; j < 64; j++) {
57  ppc->ScalingList8x8[i][j] = sl->sl[1][i][pos];
58  ppc->ScalingList16x16[i][j] = sl->sl[2][i][pos];
59 
60  if (i < 2)
61  ppc->ScalingList32x32[i][j] = sl->sl[3][i * 3][pos];
62  }
63 
64  ppc->ScalingListDCCoeff16x16[i] = sl->sl_dc[0][i];
65  if (i < 2)
66  ppc->ScalingListDCCoeff32x32[i] = sl->sl_dc[1][i * 3];
67  }
68 }
69 
71  const uint8_t *buffer, uint32_t size)
72 {
73  const HEVCContext *s = avctx->priv_data;
74  const HEVCPPS *pps = s->ps.pps;
75  const HEVCSPS *sps = s->ps.sps;
76 
78  CUVIDPICPARAMS *pp = &ctx->pic_params;
79  CUVIDHEVCPICPARAMS *ppc = &pp->CodecSpecific.hevc;
80  FrameDecodeData *fdd;
81  NVDECFrame *cf;
82 
83  int i, j, dpb_size, ret;
84 
85  ret = ff_nvdec_start_frame(avctx, s->ref->frame);
86  if (ret < 0)
87  return ret;
88 
89  fdd = (FrameDecodeData*)s->ref->frame->private_ref->data;
90  cf = (NVDECFrame*)fdd->hwaccel_priv;
91 
92  *pp = (CUVIDPICPARAMS) {
93  .PicWidthInMbs = sps->width / 16,
94  .FrameHeightInMbs = sps->height / 16,
95  .CurrPicIdx = cf->idx,
96  .ref_pic_flag = 1,
97  .intra_pic_flag = IS_IRAP(s),
98 
99  .CodecSpecific.hevc = {
100  .pic_width_in_luma_samples = sps->width,
101  .pic_height_in_luma_samples = sps->height,
102  .log2_min_luma_coding_block_size_minus3 = sps->log2_min_cb_size - 3,
103  .log2_diff_max_min_luma_coding_block_size = sps->log2_diff_max_min_coding_block_size,
104  .log2_min_transform_block_size_minus2 = sps->log2_min_tb_size - 2,
105  .log2_diff_max_min_transform_block_size = sps->log2_max_trafo_size - sps->log2_min_tb_size,
106  .pcm_enabled_flag = sps->pcm_enabled_flag,
107  .log2_min_pcm_luma_coding_block_size_minus3 = sps->pcm_enabled_flag ? sps->pcm.log2_min_pcm_cb_size - 3 : 0,
108  .log2_diff_max_min_pcm_luma_coding_block_size = sps->pcm.log2_max_pcm_cb_size - sps->pcm.log2_min_pcm_cb_size,
109  .pcm_sample_bit_depth_luma_minus1 = sps->pcm_enabled_flag ? sps->pcm.bit_depth - 1 : 0,
110  .pcm_sample_bit_depth_chroma_minus1 = sps->pcm_enabled_flag ? sps->pcm.bit_depth_chroma - 1 : 0,
111 #if NVDECAPI_CHECK_VERSION(8, 1)
112  .log2_max_transform_skip_block_size_minus2 = pps->log2_max_transform_skip_block_size - 2,
113  .log2_sao_offset_scale_luma = pps->log2_sao_offset_scale_luma,
114  .log2_sao_offset_scale_chroma = pps->log2_sao_offset_scale_chroma,
115  .high_precision_offsets_enabled_flag = sps->high_precision_offsets_enabled_flag,
116 #endif
117  .pcm_loop_filter_disabled_flag = sps->pcm.loop_filter_disable_flag,
118  .strong_intra_smoothing_enabled_flag = sps->sps_strong_intra_smoothing_enable_flag,
119  .max_transform_hierarchy_depth_intra = sps->max_transform_hierarchy_depth_intra,
120  .max_transform_hierarchy_depth_inter = sps->max_transform_hierarchy_depth_inter,
121  .amp_enabled_flag = sps->amp_enabled_flag,
122  .separate_colour_plane_flag = sps->separate_colour_plane_flag,
123  .log2_max_pic_order_cnt_lsb_minus4 = sps->log2_max_poc_lsb - 4,
124  .num_short_term_ref_pic_sets = sps->nb_st_rps,
125  .long_term_ref_pics_present_flag = sps->long_term_ref_pics_present_flag,
126  .num_long_term_ref_pics_sps = sps->num_long_term_ref_pics_sps,
127  .sps_temporal_mvp_enabled_flag = sps->sps_temporal_mvp_enabled_flag,
128  .sample_adaptive_offset_enabled_flag = sps->sao_enabled,
129  .scaling_list_enable_flag = sps->scaling_list_enable_flag,
130  .IrapPicFlag = IS_IRAP(s),
131  .IdrPicFlag = IS_IDR(s),
132  .bit_depth_luma_minus8 = sps->bit_depth - 8,
133  .bit_depth_chroma_minus8 = sps->bit_depth - 8,
134 #if NVDECAPI_CHECK_VERSION(9, 0)
135  .sps_range_extension_flag = sps->sps_range_extension_flag,
136  .transform_skip_rotation_enabled_flag = sps->transform_skip_rotation_enabled_flag,
137  .transform_skip_context_enabled_flag = sps->transform_skip_context_enabled_flag,
138  .implicit_rdpcm_enabled_flag = sps->implicit_rdpcm_enabled_flag,
139  .explicit_rdpcm_enabled_flag = sps->explicit_rdpcm_enabled_flag,
140  .extended_precision_processing_flag = sps->extended_precision_processing_flag,
141  .intra_smoothing_disabled_flag = sps->intra_smoothing_disabled_flag,
142  .persistent_rice_adaptation_enabled_flag = sps->persistent_rice_adaptation_enabled_flag,
143  .cabac_bypass_alignment_enabled_flag = sps->cabac_bypass_alignment_enabled_flag,
144 #endif
145 
146  .dependent_slice_segments_enabled_flag = pps->dependent_slice_segments_enabled_flag,
147  .slice_segment_header_extension_present_flag = pps->slice_header_extension_present_flag,
148  .sign_data_hiding_enabled_flag = pps->sign_data_hiding_flag,
149  .cu_qp_delta_enabled_flag = pps->cu_qp_delta_enabled_flag,
150  .diff_cu_qp_delta_depth = pps->diff_cu_qp_delta_depth,
151  .init_qp_minus26 = pps->pic_init_qp_minus26,
152  .pps_cb_qp_offset = pps->cb_qp_offset,
153  .pps_cr_qp_offset = pps->cr_qp_offset,
154  .constrained_intra_pred_flag = pps->constrained_intra_pred_flag,
155  .weighted_pred_flag = pps->weighted_pred_flag,
156  .weighted_bipred_flag = pps->weighted_bipred_flag,
157  .transform_skip_enabled_flag = pps->transform_skip_enabled_flag,
158  .transquant_bypass_enabled_flag = pps->transquant_bypass_enable_flag,
159  .entropy_coding_sync_enabled_flag = pps->entropy_coding_sync_enabled_flag,
160  .log2_parallel_merge_level_minus2 = pps->log2_parallel_merge_level - 2,
161  .num_extra_slice_header_bits = pps->num_extra_slice_header_bits,
162  .loop_filter_across_tiles_enabled_flag = pps->loop_filter_across_tiles_enabled_flag,
163  .loop_filter_across_slices_enabled_flag = pps->seq_loop_filter_across_slices_enabled_flag,
164  .output_flag_present_flag = pps->output_flag_present_flag,
165  .num_ref_idx_l0_default_active_minus1 = pps->num_ref_idx_l0_default_active - 1,
166  .num_ref_idx_l1_default_active_minus1 = pps->num_ref_idx_l1_default_active - 1,
167  .lists_modification_present_flag = pps->lists_modification_present_flag,
168  .cabac_init_present_flag = pps->cabac_init_present_flag,
169  .pps_slice_chroma_qp_offsets_present_flag = pps->pic_slice_level_chroma_qp_offsets_present_flag,
170  .deblocking_filter_override_enabled_flag = pps->deblocking_filter_override_enabled_flag,
171  .pps_deblocking_filter_disabled_flag = pps->disable_dbf,
172  .pps_beta_offset_div2 = pps->beta_offset / 2,
173  .pps_tc_offset_div2 = pps->tc_offset / 2,
174  .tiles_enabled_flag = pps->tiles_enabled_flag,
175  .uniform_spacing_flag = pps->uniform_spacing_flag,
176  .num_tile_columns_minus1 = pps->num_tile_columns - 1,
177  .num_tile_rows_minus1 = pps->num_tile_rows - 1,
178 #if NVDECAPI_CHECK_VERSION(9, 0)
179  .pps_range_extension_flag = pps->pps_range_extensions_flag,
180  .cross_component_prediction_enabled_flag = pps->cross_component_prediction_enabled_flag,
181  .chroma_qp_offset_list_enabled_flag = pps->chroma_qp_offset_list_enabled_flag,
182  .diff_cu_chroma_qp_offset_depth = pps->diff_cu_chroma_qp_offset_depth,
183  .chroma_qp_offset_list_len_minus1 = pps->chroma_qp_offset_list_len_minus1,
184 #endif
185 
186  .NumBitsForShortTermRPSInSlice = s->sh.short_term_rps ? s->sh.short_term_ref_pic_set_size : 0,
187  .NumDeltaPocsOfRefRpsIdx = s->sh.short_term_rps ? s->sh.short_term_rps->rps_idx_num_delta_pocs : 0,
188  .NumPocTotalCurr = ff_hevc_frame_nb_refs(s),
189  .NumPocStCurrBefore = s->rps[ST_CURR_BEF].nb_refs,
190  .NumPocStCurrAfter = s->rps[ST_CURR_AFT].nb_refs,
191  .NumPocLtCurr = s->rps[LT_CURR].nb_refs,
192  .CurrPicOrderCntVal = s->ref->poc,
193  },
194  };
195 
196  if (pps->num_tile_columns > FF_ARRAY_ELEMS(ppc->column_width_minus1) ||
197  pps->num_tile_rows > FF_ARRAY_ELEMS(ppc->row_height_minus1)) {
198  av_log(avctx, AV_LOG_ERROR, "Too many tiles\n");
199  return AVERROR(ENOSYS);
200  }
201  for (i = 0; i < pps->num_tile_columns; i++)
202  ppc->column_width_minus1[i] = pps->column_width[i] - 1;
203  for (i = 0; i < pps->num_tile_rows; i++)
204  ppc->row_height_minus1[i] = pps->row_height[i] - 1;
205 
206 #if NVDECAPI_CHECK_VERSION(9, 0)
207  if (pps->chroma_qp_offset_list_len_minus1 > FF_ARRAY_ELEMS(ppc->cb_qp_offset_list) ||
208  pps->chroma_qp_offset_list_len_minus1 > FF_ARRAY_ELEMS(ppc->cr_qp_offset_list)) {
209  av_log(avctx, AV_LOG_ERROR, "Too many chroma_qp_offsets\n");
210  return AVERROR(ENOSYS);
211  }
212  for (i = 0; i <= pps->chroma_qp_offset_list_len_minus1; i++) {
213  ppc->cb_qp_offset_list[i] = pps->cb_qp_offset_list[i];
214  ppc->cr_qp_offset_list[i] = pps->cr_qp_offset_list[i];
215  }
216 #endif
217 
218  if (s->rps[LT_CURR].nb_refs > FF_ARRAY_ELEMS(ppc->RefPicSetLtCurr) ||
219  s->rps[ST_CURR_BEF].nb_refs > FF_ARRAY_ELEMS(ppc->RefPicSetStCurrBefore) ||
220  s->rps[ST_CURR_AFT].nb_refs > FF_ARRAY_ELEMS(ppc->RefPicSetStCurrAfter)) {
221  av_log(avctx, AV_LOG_ERROR, "Too many reference frames\n");
222  return AVERROR(ENOSYS);
223  }
224 
225  dpb_size = 0;
226  for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) {
227  const HEVCFrame *ref = &s->DPB[i];
229  continue;
230  if (dpb_size >= FF_ARRAY_ELEMS(ppc->RefPicIdx)) {
231  av_log(avctx, AV_LOG_ERROR, "Too many reference frames\n");
232  return AVERROR_INVALIDDATA;
233  }
234  dpb_add(ppc, dpb_size++, ref);
235 
236  }
237  for (i = dpb_size; i < FF_ARRAY_ELEMS(ppc->RefPicIdx); i++)
238  ppc->RefPicIdx[i] = -1;
239 
240  for (i = 0; i < s->rps[ST_CURR_BEF].nb_refs; i++) {
241  for (j = 0; j < dpb_size; j++) {
242  if (ppc->PicOrderCntVal[j] == s->rps[ST_CURR_BEF].list[i]) {
243  ppc->RefPicSetStCurrBefore[i] = j;
244  break;
245  }
246  }
247  }
248  for (i = 0; i < s->rps[ST_CURR_AFT].nb_refs; i++) {
249  for (j = 0; j < dpb_size; j++) {
250  if (ppc->PicOrderCntVal[j] == s->rps[ST_CURR_AFT].list[i]) {
251  ppc->RefPicSetStCurrAfter[i] = j;
252  break;
253  }
254  }
255  }
256  for (i = 0; i < s->rps[LT_CURR].nb_refs; i++) {
257  for (j = 0; j < dpb_size; j++) {
258  if (ppc->PicOrderCntVal[j] == s->rps[LT_CURR].list[i]) {
259  ppc->RefPicSetLtCurr[i] = j;
260  break;
261  }
262  }
263  }
264 
265  fill_scaling_lists(ppc, s);
266 
267  return 0;
268 }
269 
271  uint32_t size)
272 {
274  void *tmp;
275 
276  tmp = av_fast_realloc(ctx->bitstream_internal, &ctx->bitstream_allocated,
277  ctx->bitstream_len + size + 3);
278  if (!tmp)
279  return AVERROR(ENOMEM);
280  ctx->bitstream = ctx->bitstream_internal = tmp;
281 
282  tmp = av_fast_realloc(ctx->slice_offsets, &ctx->slice_offsets_allocated,
283  (ctx->nb_slices + 1) * sizeof(*ctx->slice_offsets));
284  if (!tmp)
285  return AVERROR(ENOMEM);
286  ctx->slice_offsets = tmp;
287 
288  AV_WB24(ctx->bitstream + ctx->bitstream_len, 1);
289  memcpy(ctx->bitstream + ctx->bitstream_len + 3, buffer, size);
290  ctx->slice_offsets[ctx->nb_slices] = ctx->bitstream_len ;
291  ctx->bitstream_len += size + 3;
292  ctx->nb_slices++;
293 
294  return 0;
295 }
296 
298  AVBufferRef *hw_frames_ctx)
299 {
300  const HEVCContext *s = avctx->priv_data;
301  const HEVCSPS *sps = s->ps.sps;
302  return ff_nvdec_frame_params(avctx, hw_frames_ctx, sps->temporal_layer[sps->max_sub_layers - 1].max_dec_pic_buffering + 1, 1);
303 }
304 
307  ctx->supports_444 = 1;
308  return ff_nvdec_decode_init(avctx);
309 }
310 
312  .name = "hevc_nvdec",
313  .type = AVMEDIA_TYPE_VIDEO,
314  .id = AV_CODEC_ID_HEVC,
315  .pix_fmt = AV_PIX_FMT_CUDA,
316  .start_frame = nvdec_hevc_start_frame,
317  .end_frame = ff_nvdec_end_frame,
318  .decode_slice = nvdec_hevc_decode_slice,
319  .frame_params = nvdec_hevc_frame_params,
320  .init = nvdec_hevc_decode_init,
321  .uninit = ff_nvdec_decode_uninit,
322  .priv_data_size = sizeof(NVDECContext),
323 };
uint8_t
Libavcodec external API header.
static int FUNC() pps(CodedBitstreamContext *ctx, RWContext *rw, H264RawPPS *current)
static int FUNC() sps(CodedBitstreamContext *ctx, RWContext *rw, H264RawSPS *current)
#define s(width, name)
Definition: cbs_vp9.c:257
@ AV_CODEC_ID_HEVC
Definition: codec_id.h:223
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
#define AVERROR(e)
Definition: error.h:43
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:194
void * av_fast_realloc(void *ptr, unsigned int *size, size_t min_size)
Reallocate the given buffer if it is not large enough, otherwise do nothing.
Definition: mem.c:478
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
for(j=16;j >0;--j)
const uint8_t ff_hevc_diag_scan8x8_x[64]
Definition: hevc_data.c:39
const uint8_t ff_hevc_diag_scan4x4_x[16]
Definition: hevc_data.c:25
const uint8_t ff_hevc_diag_scan8x8_y[64]
Definition: hevc_data.c:58
const uint8_t ff_hevc_diag_scan4x4_y[16]
Definition: hevc_data.c:32
int ff_hevc_frame_nb_refs(const HEVCContext *s)
Get the number of candidate references for the current frame.
Definition: hevc_refs.c:503
#define HEVC_FRAME_FLAG_SHORT_REF
Definition: hevcdec.h:392
#define IS_IDR(s)
Definition: hevcdec.h:78
#define HEVC_FRAME_FLAG_LONG_REF
Definition: hevcdec.h:393
#define IS_IRAP(s)
Definition: hevcdec.h:81
@ ST_CURR_AFT
Definition: hevcdec.h:85
@ ST_CURR_BEF
Definition: hevcdec.h:84
@ LT_CURR
Definition: hevcdec.h:87
int i
Definition: input.c:407
#define AV_WB24(p, d)
Definition: intreadwrite.h:450
common internal API header
int ff_nvdec_frame_params(AVCodecContext *avctx, AVBufferRef *hw_frames_ctx, int dpb_size, int supports_444)
Definition: nvdec.c:697
int ff_nvdec_decode_init(AVCodecContext *avctx)
Definition: nvdec.c:330
int ff_nvdec_end_frame(AVCodecContext *avctx)
Definition: nvdec.c:635
int ff_nvdec_start_frame(AVCodecContext *avctx, AVFrame *frame)
Definition: nvdec.c:559
int ff_nvdec_decode_uninit(AVCodecContext *avctx)
Definition: nvdec.c:262
#define NVDECAPI_CHECK_VERSION(major, minor)
Definition: nvdec.h:40
static void fill_scaling_lists(CUVIDHEVCPICPARAMS *ppc, const HEVCContext *s)
Definition: nvdec_hevc.c:43
static int nvdec_hevc_frame_params(AVCodecContext *avctx, AVBufferRef *hw_frames_ctx)
Definition: nvdec_hevc.c:297
static int nvdec_hevc_start_frame(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size)
Definition: nvdec_hevc.c:70
static void dpb_add(CUVIDHEVCPICPARAMS *pp, int idx, const HEVCFrame *src)
Definition: nvdec_hevc.c:33
static int nvdec_hevc_decode_init(AVCodecContext *avctx)
Definition: nvdec_hevc.c:305
const AVHWAccel ff_hevc_nvdec_hwaccel
Definition: nvdec_hevc.c:311
static int nvdec_hevc_decode_slice(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size)
Definition: nvdec_hevc.c:270
@ AV_PIX_FMT_CUDA
HW acceleration through CUDA.
Definition: pixfmt.h:235
static char buffer[20]
Definition: seek.c:32
#define FF_ARRAY_ELEMS(a)
unsigned int pos
Definition: spdifenc.c:412
A reference to a data buffer.
Definition: buffer.h:84
main external API structure.
Definition: avcodec.h:536
struct AVCodecInternal * internal
Private context used for internal data.
Definition: avcodec.h:571
void * priv_data
Definition: avcodec.h:563
void * hwaccel_priv_data
hwaccel-specific private data
Definition: internal.h:180
const char * name
Name of the hardware accelerated codec.
Definition: avcodec.h:2444
This struct stores per-frame lavc-internal data and is attached to it via private_ref.
Definition: decode.h:34
void * hwaccel_priv
Per-frame private data for hwaccels.
Definition: decode.h:52
unsigned int idx
Definition: nvdec.h:45
uint8_t sl_dc[2][6]
Definition: hevc_ps.h:150
uint8_t sl[4][6][64]
Definition: hevc_ps.h:149
#define av_log(a,...)
static uint8_t tmp[11]
Definition: aes_ctr.c:27
#define src
Definition: vp8dsp.c:255
int dpb_size
Definition: h264_levels.c:107
static int ref[MAX_W *MAX_W]
Definition: jpeg2000dwt.c:107
AVFormatContext * ctx
Definition: movenc.c:48
int size