1/* 2 * H.26L/H.264/AVC/JVT/14496-10/... decoder 3 * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at> 4 * 5 * This file is part of FFmpeg. 6 * 7 * FFmpeg is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU Lesser General Public 9 * License as published by the Free Software Foundation; either 10 * version 2.1 of the License, or (at your option) any later version. 11 * 12 * FFmpeg is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * Lesser General Public License for more details. 16 * 17 * You should have received a copy of the GNU Lesser General Public 18 * License along with FFmpeg; if not, write to the Free Software 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 20 */ 21 22/** 23 * @file 24 * H.264 / AVC / MPEG-4 part10 codec. 25 * @author Michael Niedermayer <michaelni@gmx.at> 26 */ 27 28#include "config_components.h" 29 30#include "libavutil/avassert.h" 31#include "libavutil/display.h" 32#include "libavutil/film_grain_params.h" 33#include "libavutil/pixdesc.h" 34#include "libavutil/stereo3d.h" 35#include "libavutil/timecode.h" 36#include "internal.h" 37#include "cabac.h" 38#include "cabac_functions.h" 39#include "error_resilience.h" 40#include "avcodec.h" 41#include "h264.h" 42#include "h264dec.h" 43#include "h264data.h" 44#include "h264chroma.h" 45#include "h264_ps.h" 46#include "golomb.h" 47#include "mathops.h" 48#include "mpegutils.h" 49#include "rectangle.h" 50#include "thread.h" 51#include "threadframe.h" 52 53static const uint8_t field_scan[16+1] = { 54 0 + 0 * 4, 0 + 1 * 4, 1 + 0 * 4, 0 + 2 * 4, 55 0 + 3 * 4, 1 + 1 * 4, 1 + 2 * 4, 1 + 3 * 4, 56 2 + 0 * 4, 2 + 1 * 4, 2 + 2 * 4, 2 + 3 * 4, 57 3 + 0 * 4, 3 + 1 * 4, 3 + 2 * 4, 3 + 3 * 4, 58}; 59 60static const uint8_t field_scan8x8[64+1] = { 61 0 + 0 * 8, 0 + 1 * 8, 0 + 2 * 8, 1 + 0 * 8, 62 1 + 1 * 8, 0 + 3 * 8, 0 + 4 * 8, 1 + 2 * 8, 63 2 + 0 * 8, 1 + 3 * 8, 0 + 5 * 8, 0 + 6 * 8, 64 0 + 7 * 8, 1 + 4 * 8, 2 + 1 * 8, 3 + 0 * 8, 65 2 + 2 * 8, 1 + 5 * 8, 1 + 6 * 8, 1 + 7 * 8, 66 2 + 3 * 8, 3 + 1 * 8, 4 + 0 * 8, 3 + 2 * 8, 67 2 + 4 * 8, 2 + 5 * 8, 2 + 6 * 8, 2 + 7 * 8, 68 3 + 3 * 8, 4 + 1 * 8, 5 + 0 * 8, 4 + 2 * 8, 69 3 + 4 * 8, 3 + 5 * 8, 3 + 6 * 8, 3 + 7 * 8, 70 4 + 3 * 8, 5 + 1 * 8, 6 + 0 * 8, 5 + 2 * 8, 71 4 + 4 * 8, 4 + 5 * 8, 4 + 6 * 8, 4 + 7 * 8, 72 5 + 3 * 8, 6 + 1 * 8, 6 + 2 * 8, 5 + 4 * 8, 73 5 + 5 * 8, 5 + 6 * 8, 5 + 7 * 8, 6 + 3 * 8, 74 7 + 0 * 8, 7 + 1 * 8, 6 + 4 * 8, 6 + 5 * 8, 75 6 + 6 * 8, 6 + 7 * 8, 7 + 2 * 8, 7 + 3 * 8, 76 7 + 4 * 8, 7 + 5 * 8, 7 + 6 * 8, 7 + 7 * 8, 77}; 78 79static const uint8_t field_scan8x8_cavlc[64+1] = { 80 0 + 0 * 8, 1 + 1 * 8, 2 + 0 * 8, 0 + 7 * 8, 81 2 + 2 * 8, 2 + 3 * 8, 2 + 4 * 8, 3 + 3 * 8, 82 3 + 4 * 8, 4 + 3 * 8, 4 + 4 * 8, 5 + 3 * 8, 83 5 + 5 * 8, 7 + 0 * 8, 6 + 6 * 8, 7 + 4 * 8, 84 0 + 1 * 8, 0 + 3 * 8, 1 + 3 * 8, 1 + 4 * 8, 85 1 + 5 * 8, 3 + 1 * 8, 2 + 5 * 8, 4 + 1 * 8, 86 3 + 5 * 8, 5 + 1 * 8, 4 + 5 * 8, 6 + 1 * 8, 87 5 + 6 * 8, 7 + 1 * 8, 6 + 7 * 8, 7 + 5 * 8, 88 0 + 2 * 8, 0 + 4 * 8, 0 + 5 * 8, 2 + 1 * 8, 89 1 + 6 * 8, 4 + 0 * 8, 2 + 6 * 8, 5 + 0 * 8, 90 3 + 6 * 8, 6 + 0 * 8, 4 + 6 * 8, 6 + 2 * 8, 91 5 + 7 * 8, 6 + 4 * 8, 7 + 2 * 8, 7 + 6 * 8, 92 1 + 0 * 8, 1 + 2 * 8, 0 + 6 * 8, 3 + 0 * 8, 93 1 + 7 * 8, 3 + 2 * 8, 2 + 7 * 8, 4 + 2 * 8, 94 3 + 7 * 8, 5 + 2 * 8, 4 + 7 * 8, 5 + 4 * 8, 95 6 + 3 * 8, 6 + 5 * 8, 7 + 3 * 8, 7 + 7 * 8, 96}; 97 98// zigzag_scan8x8_cavlc[i] = zigzag_scan8x8[(i/4) + 16*(i%4)] 99static const uint8_t zigzag_scan8x8_cavlc[64+1] = { 100 0 + 0 * 8, 1 + 1 * 8, 1 + 2 * 8, 2 + 2 * 8, 101 4 + 1 * 8, 0 + 5 * 8, 3 + 3 * 8, 7 + 0 * 8, 102 3 + 4 * 8, 1 + 7 * 8, 5 + 3 * 8, 6 + 3 * 8, 103 2 + 7 * 8, 6 + 4 * 8, 5 + 6 * 8, 7 + 5 * 8, 104 1 + 0 * 8, 2 + 0 * 8, 0 + 3 * 8, 3 + 1 * 8, 105 3 + 2 * 8, 0 + 6 * 8, 4 + 2 * 8, 6 + 1 * 8, 106 2 + 5 * 8, 2 + 6 * 8, 6 + 2 * 8, 5 + 4 * 8, 107 3 + 7 * 8, 7 + 3 * 8, 4 + 7 * 8, 7 + 6 * 8, 108 0 + 1 * 8, 3 + 0 * 8, 0 + 4 * 8, 4 + 0 * 8, 109 2 + 3 * 8, 1 + 5 * 8, 5 + 1 * 8, 5 + 2 * 8, 110 1 + 6 * 8, 3 + 5 * 8, 7 + 1 * 8, 4 + 5 * 8, 111 4 + 6 * 8, 7 + 4 * 8, 5 + 7 * 8, 6 + 7 * 8, 112 0 + 2 * 8, 2 + 1 * 8, 1 + 3 * 8, 5 + 0 * 8, 113 1 + 4 * 8, 2 + 4 * 8, 6 + 0 * 8, 4 + 3 * 8, 114 0 + 7 * 8, 4 + 4 * 8, 7 + 2 * 8, 3 + 6 * 8, 115 5 + 5 * 8, 6 + 5 * 8, 6 + 6 * 8, 7 + 7 * 8, 116}; 117 118static void release_unused_pictures(H264Context *h, int remove_current) 119{ 120 int i; 121 122 /* release non reference frames */ 123 for (i = 0; i < H264_MAX_PICTURE_COUNT; i++) { 124 if (h->DPB[i].f->buf[0] && !h->DPB[i].reference && 125 (remove_current || &h->DPB[i] != h->cur_pic_ptr)) { 126 ff_h264_unref_picture(h, &h->DPB[i]); 127 } 128 } 129} 130 131static int alloc_scratch_buffers(H264SliceContext *sl, int linesize) 132{ 133 const H264Context *h = sl->h264; 134 int alloc_size = FFALIGN(FFABS(linesize) + 32, 32); 135 136 av_fast_malloc(&sl->bipred_scratchpad, &sl->bipred_scratchpad_allocated, 16 * 6 * alloc_size); 137 // edge emu needs blocksize + filter length - 1 138 // (= 21x21 for H.264) 139 av_fast_malloc(&sl->edge_emu_buffer, &sl->edge_emu_buffer_allocated, alloc_size * 2 * 21); 140 141 av_fast_mallocz(&sl->top_borders[0], &sl->top_borders_allocated[0], 142 h->mb_width * 16 * 3 * sizeof(uint8_t) * 2); 143 av_fast_mallocz(&sl->top_borders[1], &sl->top_borders_allocated[1], 144 h->mb_width * 16 * 3 * sizeof(uint8_t) * 2); 145 146 if (!sl->bipred_scratchpad || !sl->edge_emu_buffer || 147 !sl->top_borders[0] || !sl->top_borders[1]) { 148 av_freep(&sl->bipred_scratchpad); 149 av_freep(&sl->edge_emu_buffer); 150 av_freep(&sl->top_borders[0]); 151 av_freep(&sl->top_borders[1]); 152 153 sl->bipred_scratchpad_allocated = 0; 154 sl->edge_emu_buffer_allocated = 0; 155 sl->top_borders_allocated[0] = 0; 156 sl->top_borders_allocated[1] = 0; 157 return AVERROR(ENOMEM); 158 } 159 160 return 0; 161} 162 163static int init_table_pools(H264Context *h) 164{ 165 const int big_mb_num = h->mb_stride * (h->mb_height + 1) + 1; 166 const int mb_array_size = h->mb_stride * h->mb_height; 167 const int b4_stride = h->mb_width * 4 + 1; 168 const int b4_array_size = b4_stride * h->mb_height * 4; 169 170 h->qscale_table_pool = av_buffer_pool_init(big_mb_num + h->mb_stride, 171 av_buffer_allocz); 172 h->mb_type_pool = av_buffer_pool_init((big_mb_num + h->mb_stride) * 173 sizeof(uint32_t), av_buffer_allocz); 174 h->motion_val_pool = av_buffer_pool_init(2 * (b4_array_size + 4) * 175 sizeof(int16_t), av_buffer_allocz); 176 h->ref_index_pool = av_buffer_pool_init(4 * mb_array_size, av_buffer_allocz); 177 178 if (!h->qscale_table_pool || !h->mb_type_pool || !h->motion_val_pool || 179 !h->ref_index_pool) { 180 av_buffer_pool_uninit(&h->qscale_table_pool); 181 av_buffer_pool_uninit(&h->mb_type_pool); 182 av_buffer_pool_uninit(&h->motion_val_pool); 183 av_buffer_pool_uninit(&h->ref_index_pool); 184 return AVERROR(ENOMEM); 185 } 186 187 return 0; 188} 189 190static int alloc_picture(H264Context *h, H264Picture *pic) 191{ 192 int i, ret = 0; 193 194 av_assert0(!pic->f->data[0]); 195 196 pic->tf.f = pic->f; 197 ret = ff_thread_get_ext_buffer(h->avctx, &pic->tf, 198 pic->reference ? AV_GET_BUFFER_FLAG_REF : 0); 199 if (ret < 0) 200 goto fail; 201 202 if (pic->needs_fg) { 203 pic->f_grain->format = pic->f->format; 204 pic->f_grain->width = pic->f->width; 205 pic->f_grain->height = pic->f->height; 206 ret = ff_thread_get_buffer(h->avctx, pic->f_grain, 0); 207 if (ret < 0) 208 goto fail; 209 } 210 211 if (h->avctx->hwaccel) { 212 const AVHWAccel *hwaccel = h->avctx->hwaccel; 213 av_assert0(!pic->hwaccel_picture_private); 214 if (hwaccel->frame_priv_data_size) { 215 pic->hwaccel_priv_buf = av_buffer_allocz(hwaccel->frame_priv_data_size); 216 if (!pic->hwaccel_priv_buf) 217 return AVERROR(ENOMEM); 218 pic->hwaccel_picture_private = pic->hwaccel_priv_buf->data; 219 } 220 } 221 if (CONFIG_GRAY && !h->avctx->hwaccel && h->flags & AV_CODEC_FLAG_GRAY && pic->f->data[2]) { 222 int h_chroma_shift, v_chroma_shift; 223 av_pix_fmt_get_chroma_sub_sample(pic->f->format, 224 &h_chroma_shift, &v_chroma_shift); 225 226 for(i=0; i<AV_CEIL_RSHIFT(pic->f->height, v_chroma_shift); i++) { 227 memset(pic->f->data[1] + pic->f->linesize[1]*i, 228 0x80, AV_CEIL_RSHIFT(pic->f->width, h_chroma_shift)); 229 memset(pic->f->data[2] + pic->f->linesize[2]*i, 230 0x80, AV_CEIL_RSHIFT(pic->f->width, h_chroma_shift)); 231 } 232 } 233 234 if (!h->qscale_table_pool) { 235 ret = init_table_pools(h); 236 if (ret < 0) 237 goto fail; 238 } 239 240 pic->qscale_table_buf = av_buffer_pool_get(h->qscale_table_pool); 241 pic->mb_type_buf = av_buffer_pool_get(h->mb_type_pool); 242 if (!pic->qscale_table_buf || !pic->mb_type_buf) 243 goto fail; 244 245 pic->mb_type = (uint32_t*)pic->mb_type_buf->data + 2 * h->mb_stride + 1; 246 pic->qscale_table = pic->qscale_table_buf->data + 2 * h->mb_stride + 1; 247 248 for (i = 0; i < 2; i++) { 249 pic->motion_val_buf[i] = av_buffer_pool_get(h->motion_val_pool); 250 pic->ref_index_buf[i] = av_buffer_pool_get(h->ref_index_pool); 251 if (!pic->motion_val_buf[i] || !pic->ref_index_buf[i]) 252 goto fail; 253 254 pic->motion_val[i] = (int16_t (*)[2])pic->motion_val_buf[i]->data + 4; 255 pic->ref_index[i] = pic->ref_index_buf[i]->data; 256 } 257 258 pic->pps_buf = av_buffer_ref(h->ps.pps_ref); 259 if (!pic->pps_buf) 260 goto fail; 261 pic->pps = (const PPS*)pic->pps_buf->data; 262 263 pic->mb_width = h->mb_width; 264 pic->mb_height = h->mb_height; 265 pic->mb_stride = h->mb_stride; 266 267 return 0; 268fail: 269 ff_h264_unref_picture(h, pic); 270 return (ret < 0) ? ret : AVERROR(ENOMEM); 271} 272 273static int find_unused_picture(H264Context *h) 274{ 275 int i; 276 277 for (i = 0; i < H264_MAX_PICTURE_COUNT; i++) { 278 if (!h->DPB[i].f->buf[0]) 279 return i; 280 } 281 return AVERROR_INVALIDDATA; 282} 283 284 285#define IN_RANGE(a, b, size) (((void*)(a) >= (void*)(b)) && ((void*)(a) < (void*)((b) + (size)))) 286 287#define REBASE_PICTURE(pic, new_ctx, old_ctx) \ 288 (((pic) && (pic) >= (old_ctx)->DPB && \ 289 (pic) < (old_ctx)->DPB + H264_MAX_PICTURE_COUNT) ? \ 290 &(new_ctx)->DPB[(pic) - (old_ctx)->DPB] : NULL) 291 292static void copy_picture_range(H264Picture **to, H264Picture **from, int count, 293 H264Context *new_base, 294 H264Context *old_base) 295{ 296 int i; 297 298 for (i = 0; i < count; i++) { 299 av_assert1(!from[i] || 300 IN_RANGE(from[i], old_base, 1) || 301 IN_RANGE(from[i], old_base->DPB, H264_MAX_PICTURE_COUNT)); 302 to[i] = REBASE_PICTURE(from[i], new_base, old_base); 303 } 304} 305 306static int h264_slice_header_init(H264Context *h); 307 308int ff_h264_update_thread_context(AVCodecContext *dst, 309 const AVCodecContext *src) 310{ 311 H264Context *h = dst->priv_data, *h1 = src->priv_data; 312 int inited = h->context_initialized, err = 0; 313 int need_reinit = 0; 314 int i, ret; 315 316 if (dst == src) 317 return 0; 318 319 if (inited && !h1->ps.sps) 320 return AVERROR_INVALIDDATA; 321 322 if (inited && 323 (h->width != h1->width || 324 h->height != h1->height || 325 h->mb_width != h1->mb_width || 326 h->mb_height != h1->mb_height || 327 !h->ps.sps || 328 h->ps.sps->bit_depth_luma != h1->ps.sps->bit_depth_luma || 329 h->ps.sps->chroma_format_idc != h1->ps.sps->chroma_format_idc || 330 h->ps.sps->colorspace != h1->ps.sps->colorspace)) { 331 need_reinit = 1; 332 } 333 334 /* copy block_offset since frame_start may not be called */ 335 memcpy(h->block_offset, h1->block_offset, sizeof(h->block_offset)); 336 337 // SPS/PPS 338 for (i = 0; i < FF_ARRAY_ELEMS(h->ps.sps_list); i++) { 339 ret = av_buffer_replace(&h->ps.sps_list[i], h1->ps.sps_list[i]); 340 if (ret < 0) 341 return ret; 342 } 343 for (i = 0; i < FF_ARRAY_ELEMS(h->ps.pps_list); i++) { 344 ret = av_buffer_replace(&h->ps.pps_list[i], h1->ps.pps_list[i]); 345 if (ret < 0) 346 return ret; 347 } 348 349 ret = av_buffer_replace(&h->ps.pps_ref, h1->ps.pps_ref); 350 if (ret < 0) 351 return ret; 352 h->ps.pps = NULL; 353 h->ps.sps = NULL; 354 if (h1->ps.pps_ref) { 355 h->ps.pps = (const PPS*)h->ps.pps_ref->data; 356 h->ps.sps = h->ps.pps->sps; 357 } 358 359 if (need_reinit || !inited) { 360 h->width = h1->width; 361 h->height = h1->height; 362 h->mb_height = h1->mb_height; 363 h->mb_width = h1->mb_width; 364 h->mb_num = h1->mb_num; 365 h->mb_stride = h1->mb_stride; 366 h->b_stride = h1->b_stride; 367 h->x264_build = h1->x264_build; 368 369 if (h->context_initialized || h1->context_initialized) { 370 if ((err = h264_slice_header_init(h)) < 0) { 371 av_log(h->avctx, AV_LOG_ERROR, "h264_slice_header_init() failed"); 372 return err; 373 } 374 } 375 376 /* copy block_offset since frame_start may not be called */ 377 memcpy(h->block_offset, h1->block_offset, sizeof(h->block_offset)); 378 } 379 380 h->avctx->coded_height = h1->avctx->coded_height; 381 h->avctx->coded_width = h1->avctx->coded_width; 382 h->avctx->width = h1->avctx->width; 383 h->avctx->height = h1->avctx->height; 384 h->width_from_caller = h1->width_from_caller; 385 h->height_from_caller = h1->height_from_caller; 386 h->coded_picture_number = h1->coded_picture_number; 387 h->first_field = h1->first_field; 388 h->picture_structure = h1->picture_structure; 389 h->mb_aff_frame = h1->mb_aff_frame; 390 h->droppable = h1->droppable; 391 392 for (i = 0; i < H264_MAX_PICTURE_COUNT; i++) { 393 ret = ff_h264_replace_picture(h, &h->DPB[i], &h1->DPB[i]); 394 if (ret < 0) 395 return ret; 396 } 397 398 h->cur_pic_ptr = REBASE_PICTURE(h1->cur_pic_ptr, h, h1); 399 ret = ff_h264_replace_picture(h, &h->cur_pic, &h1->cur_pic); 400 if (ret < 0) 401 return ret; 402 403 h->enable_er = h1->enable_er; 404 h->workaround_bugs = h1->workaround_bugs; 405 h->droppable = h1->droppable; 406 407 // extradata/NAL handling 408 h->is_avc = h1->is_avc; 409 h->nal_length_size = h1->nal_length_size; 410 411 memcpy(&h->poc, &h1->poc, sizeof(h->poc)); 412 413 memcpy(h->short_ref, h1->short_ref, sizeof(h->short_ref)); 414 memcpy(h->long_ref, h1->long_ref, sizeof(h->long_ref)); 415 memcpy(h->delayed_pic, h1->delayed_pic, sizeof(h->delayed_pic)); 416 memcpy(h->last_pocs, h1->last_pocs, sizeof(h->last_pocs)); 417 418 h->next_output_pic = h1->next_output_pic; 419 h->next_outputed_poc = h1->next_outputed_poc; 420 h->poc_offset = h1->poc_offset; 421 422 memcpy(h->mmco, h1->mmco, sizeof(h->mmco)); 423 h->nb_mmco = h1->nb_mmco; 424 h->mmco_reset = h1->mmco_reset; 425 h->explicit_ref_marking = h1->explicit_ref_marking; 426 h->long_ref_count = h1->long_ref_count; 427 h->short_ref_count = h1->short_ref_count; 428 429 copy_picture_range(h->short_ref, h1->short_ref, 32, h, h1); 430 copy_picture_range(h->long_ref, h1->long_ref, 32, h, h1); 431 copy_picture_range(h->delayed_pic, h1->delayed_pic, 432 FF_ARRAY_ELEMS(h->delayed_pic), h, h1); 433 434 h->frame_recovered = h1->frame_recovered; 435 436 ret = av_buffer_replace(&h->sei.a53_caption.buf_ref, h1->sei.a53_caption.buf_ref); 437 if (ret < 0) 438 return ret; 439 440 for (i = 0; i < h->sei.unregistered.nb_buf_ref; i++) 441 av_buffer_unref(&h->sei.unregistered.buf_ref[i]); 442 h->sei.unregistered.nb_buf_ref = 0; 443 444 if (h1->sei.unregistered.nb_buf_ref) { 445 ret = av_reallocp_array(&h->sei.unregistered.buf_ref, 446 h1->sei.unregistered.nb_buf_ref, 447 sizeof(*h->sei.unregistered.buf_ref)); 448 if (ret < 0) 449 return ret; 450 451 for (i = 0; i < h1->sei.unregistered.nb_buf_ref; i++) { 452 h->sei.unregistered.buf_ref[i] = av_buffer_ref(h1->sei.unregistered.buf_ref[i]); 453 if (!h->sei.unregistered.buf_ref[i]) 454 return AVERROR(ENOMEM); 455 h->sei.unregistered.nb_buf_ref++; 456 } 457 } 458 h->sei.unregistered.x264_build = h1->sei.unregistered.x264_build; 459 460 if (!h->cur_pic_ptr) 461 return 0; 462 463 if (!h->droppable) { 464 err = ff_h264_execute_ref_pic_marking(h); 465 h->poc.prev_poc_msb = h->poc.poc_msb; 466 h->poc.prev_poc_lsb = h->poc.poc_lsb; 467 } 468 h->poc.prev_frame_num_offset = h->poc.frame_num_offset; 469 h->poc.prev_frame_num = h->poc.frame_num; 470 471 h->recovery_frame = h1->recovery_frame; 472 473 return err; 474} 475 476int ff_h264_update_thread_context_for_user(AVCodecContext *dst, 477 const AVCodecContext *src) 478{ 479 H264Context *h = dst->priv_data; 480 const H264Context *h1 = src->priv_data; 481 482 h->is_avc = h1->is_avc; 483 h->nal_length_size = h1->nal_length_size; 484 485 return 0; 486} 487 488static int h264_frame_start(H264Context *h) 489{ 490 H264Picture *pic; 491 int i, ret; 492 const int pixel_shift = h->pixel_shift; 493 494 if (!ff_thread_can_start_frame(h->avctx)) { 495 av_log(h->avctx, AV_LOG_ERROR, "Attempt to start a frame outside SETUP state\n"); 496 return -1; 497 } 498 499 release_unused_pictures(h, 1); 500 h->cur_pic_ptr = NULL; 501 502 i = find_unused_picture(h); 503 if (i < 0) { 504 av_log(h->avctx, AV_LOG_ERROR, "no frame buffer available\n"); 505 return i; 506 } 507 pic = &h->DPB[i]; 508 509 pic->reference = h->droppable ? 0 : h->picture_structure; 510 pic->f->coded_picture_number = h->coded_picture_number++; 511 pic->field_picture = h->picture_structure != PICT_FRAME; 512 pic->frame_num = h->poc.frame_num; 513 /* 514 * Zero key_frame here; IDR markings per slice in frame or fields are ORed 515 * in later. 516 * See decode_nal_units(). 517 */ 518 pic->f->key_frame = 0; 519 pic->mmco_reset = 0; 520 pic->recovered = 0; 521 pic->invalid_gap = 0; 522 pic->sei_recovery_frame_cnt = h->sei.recovery_point.recovery_frame_cnt; 523 524 pic->f->pict_type = h->slice_ctx[0].slice_type; 525 526 pic->f->crop_left = h->crop_left; 527 pic->f->crop_right = h->crop_right; 528 pic->f->crop_top = h->crop_top; 529 pic->f->crop_bottom = h->crop_bottom; 530 531 pic->needs_fg = h->sei.film_grain_characteristics.present && !h->avctx->hwaccel && 532 !(h->avctx->export_side_data & AV_CODEC_EXPORT_DATA_FILM_GRAIN); 533 534 if ((ret = alloc_picture(h, pic)) < 0) 535 return ret; 536 537 h->cur_pic_ptr = pic; 538 ff_h264_unref_picture(h, &h->cur_pic); 539 if (CONFIG_ERROR_RESILIENCE) { 540 ff_h264_set_erpic(&h->er.cur_pic, NULL); 541 } 542 543 if ((ret = ff_h264_ref_picture(h, &h->cur_pic, h->cur_pic_ptr)) < 0) 544 return ret; 545 546 for (i = 0; i < h->nb_slice_ctx; i++) { 547 h->slice_ctx[i].linesize = h->cur_pic_ptr->f->linesize[0]; 548 h->slice_ctx[i].uvlinesize = h->cur_pic_ptr->f->linesize[1]; 549 } 550 551 if (CONFIG_ERROR_RESILIENCE && h->enable_er) { 552 ff_er_frame_start(&h->er); 553 ff_h264_set_erpic(&h->er.last_pic, NULL); 554 ff_h264_set_erpic(&h->er.next_pic, NULL); 555 } 556 557 for (i = 0; i < 16; i++) { 558 h->block_offset[i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 4 * pic->f->linesize[0] * ((scan8[i] - scan8[0]) >> 3); 559 h->block_offset[48 + i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 8 * pic->f->linesize[0] * ((scan8[i] - scan8[0]) >> 3); 560 } 561 for (i = 0; i < 16; i++) { 562 h->block_offset[16 + i] = 563 h->block_offset[32 + i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 4 * pic->f->linesize[1] * ((scan8[i] - scan8[0]) >> 3); 564 h->block_offset[48 + 16 + i] = 565 h->block_offset[48 + 32 + i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 8 * pic->f->linesize[1] * ((scan8[i] - scan8[0]) >> 3); 566 } 567 568 /* We mark the current picture as non-reference after allocating it, so 569 * that if we break out due to an error it can be released automatically 570 * in the next ff_mpv_frame_start(). 571 */ 572 h->cur_pic_ptr->reference = 0; 573 574 h->cur_pic_ptr->field_poc[0] = h->cur_pic_ptr->field_poc[1] = INT_MAX; 575 576 h->next_output_pic = NULL; 577 578 h->postpone_filter = 0; 579 580 h->mb_aff_frame = h->ps.sps->mb_aff && (h->picture_structure == PICT_FRAME); 581 582 if (h->sei.unregistered.x264_build >= 0) 583 h->x264_build = h->sei.unregistered.x264_build; 584 585 assert(h->cur_pic_ptr->long_ref == 0); 586 587 return 0; 588} 589 590static av_always_inline void backup_mb_border(const H264Context *h, H264SliceContext *sl, 591 uint8_t *src_y, 592 uint8_t *src_cb, uint8_t *src_cr, 593 int linesize, int uvlinesize, 594 int simple) 595{ 596 uint8_t *top_border; 597 int top_idx = 1; 598 const int pixel_shift = h->pixel_shift; 599 int chroma444 = CHROMA444(h); 600 int chroma422 = CHROMA422(h); 601 602 src_y -= linesize; 603 src_cb -= uvlinesize; 604 src_cr -= uvlinesize; 605 606 if (!simple && FRAME_MBAFF(h)) { 607 if (sl->mb_y & 1) { 608 if (!MB_MBAFF(sl)) { 609 top_border = sl->top_borders[0][sl->mb_x]; 610 AV_COPY128(top_border, src_y + 15 * linesize); 611 if (pixel_shift) 612 AV_COPY128(top_border + 16, src_y + 15 * linesize + 16); 613 if (simple || !CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) { 614 if (chroma444) { 615 if (pixel_shift) { 616 AV_COPY128(top_border + 32, src_cb + 15 * uvlinesize); 617 AV_COPY128(top_border + 48, src_cb + 15 * uvlinesize + 16); 618 AV_COPY128(top_border + 64, src_cr + 15 * uvlinesize); 619 AV_COPY128(top_border + 80, src_cr + 15 * uvlinesize + 16); 620 } else { 621 AV_COPY128(top_border + 16, src_cb + 15 * uvlinesize); 622 AV_COPY128(top_border + 32, src_cr + 15 * uvlinesize); 623 } 624 } else if (chroma422) { 625 if (pixel_shift) { 626 AV_COPY128(top_border + 32, src_cb + 15 * uvlinesize); 627 AV_COPY128(top_border + 48, src_cr + 15 * uvlinesize); 628 } else { 629 AV_COPY64(top_border + 16, src_cb + 15 * uvlinesize); 630 AV_COPY64(top_border + 24, src_cr + 15 * uvlinesize); 631 } 632 } else { 633 if (pixel_shift) { 634 AV_COPY128(top_border + 32, src_cb + 7 * uvlinesize); 635 AV_COPY128(top_border + 48, src_cr + 7 * uvlinesize); 636 } else { 637 AV_COPY64(top_border + 16, src_cb + 7 * uvlinesize); 638 AV_COPY64(top_border + 24, src_cr + 7 * uvlinesize); 639 } 640 } 641 } 642 } 643 } else if (MB_MBAFF(sl)) { 644 top_idx = 0; 645 } else 646 return; 647 } 648 649 top_border = sl->top_borders[top_idx][sl->mb_x]; 650 /* There are two lines saved, the line above the top macroblock 651 * of a pair, and the line above the bottom macroblock. */ 652 AV_COPY128(top_border, src_y + 16 * linesize); 653 if (pixel_shift) 654 AV_COPY128(top_border + 16, src_y + 16 * linesize + 16); 655 656 if (simple || !CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) { 657 if (chroma444) { 658 if (pixel_shift) { 659 AV_COPY128(top_border + 32, src_cb + 16 * linesize); 660 AV_COPY128(top_border + 48, src_cb + 16 * linesize + 16); 661 AV_COPY128(top_border + 64, src_cr + 16 * linesize); 662 AV_COPY128(top_border + 80, src_cr + 16 * linesize + 16); 663 } else { 664 AV_COPY128(top_border + 16, src_cb + 16 * linesize); 665 AV_COPY128(top_border + 32, src_cr + 16 * linesize); 666 } 667 } else if (chroma422) { 668 if (pixel_shift) { 669 AV_COPY128(top_border + 32, src_cb + 16 * uvlinesize); 670 AV_COPY128(top_border + 48, src_cr + 16 * uvlinesize); 671 } else { 672 AV_COPY64(top_border + 16, src_cb + 16 * uvlinesize); 673 AV_COPY64(top_border + 24, src_cr + 16 * uvlinesize); 674 } 675 } else { 676 if (pixel_shift) { 677 AV_COPY128(top_border + 32, src_cb + 8 * uvlinesize); 678 AV_COPY128(top_border + 48, src_cr + 8 * uvlinesize); 679 } else { 680 AV_COPY64(top_border + 16, src_cb + 8 * uvlinesize); 681 AV_COPY64(top_border + 24, src_cr + 8 * uvlinesize); 682 } 683 } 684 } 685} 686 687/** 688 * Initialize implicit_weight table. 689 * @param field 0/1 initialize the weight for interlaced MBAFF 690 * -1 initializes the rest 691 */ 692static void implicit_weight_table(const H264Context *h, H264SliceContext *sl, int field) 693{ 694 int ref0, ref1, i, cur_poc, ref_start, ref_count0, ref_count1; 695 696 for (i = 0; i < 2; i++) { 697 sl->pwt.luma_weight_flag[i] = 0; 698 sl->pwt.chroma_weight_flag[i] = 0; 699 } 700 701 if (field < 0) { 702 if (h->picture_structure == PICT_FRAME) { 703 cur_poc = h->cur_pic_ptr->poc; 704 } else { 705 cur_poc = h->cur_pic_ptr->field_poc[h->picture_structure - 1]; 706 } 707 if (sl->ref_count[0] == 1 && sl->ref_count[1] == 1 && !FRAME_MBAFF(h) && 708 sl->ref_list[0][0].poc + (int64_t)sl->ref_list[1][0].poc == 2LL * cur_poc) { 709 sl->pwt.use_weight = 0; 710 sl->pwt.use_weight_chroma = 0; 711 return; 712 } 713 ref_start = 0; 714 ref_count0 = sl->ref_count[0]; 715 ref_count1 = sl->ref_count[1]; 716 } else { 717 cur_poc = h->cur_pic_ptr->field_poc[field]; 718 ref_start = 16; 719 ref_count0 = 16 + 2 * sl->ref_count[0]; 720 ref_count1 = 16 + 2 * sl->ref_count[1]; 721 } 722 723 sl->pwt.use_weight = 2; 724 sl->pwt.use_weight_chroma = 2; 725 sl->pwt.luma_log2_weight_denom = 5; 726 sl->pwt.chroma_log2_weight_denom = 5; 727 728 for (ref0 = ref_start; ref0 < ref_count0; ref0++) { 729 int64_t poc0 = sl->ref_list[0][ref0].poc; 730 for (ref1 = ref_start; ref1 < ref_count1; ref1++) { 731 int w = 32; 732 if (!sl->ref_list[0][ref0].parent->long_ref && !sl->ref_list[1][ref1].parent->long_ref) { 733 int poc1 = sl->ref_list[1][ref1].poc; 734 int td = av_clip_int8(poc1 - poc0); 735 if (td) { 736 int tb = av_clip_int8(cur_poc - poc0); 737 int tx = (16384 + (FFABS(td) >> 1)) / td; 738 int dist_scale_factor = (tb * tx + 32) >> 8; 739 if (dist_scale_factor >= -64 && dist_scale_factor <= 128) 740 w = 64 - dist_scale_factor; 741 } 742 } 743 if (field < 0) { 744 sl->pwt.implicit_weight[ref0][ref1][0] = 745 sl->pwt.implicit_weight[ref0][ref1][1] = w; 746 } else { 747 sl->pwt.implicit_weight[ref0][ref1][field] = w; 748 } 749 } 750 } 751} 752 753/** 754 * initialize scan tables 755 */ 756static void init_scan_tables(H264Context *h) 757{ 758 int i; 759 for (i = 0; i < 16; i++) { 760#define TRANSPOSE(x) ((x) >> 2) | (((x) << 2) & 0xF) 761 h->zigzag_scan[i] = TRANSPOSE(ff_zigzag_scan[i]); 762 h->field_scan[i] = TRANSPOSE(field_scan[i]); 763#undef TRANSPOSE 764 } 765 for (i = 0; i < 64; i++) { 766#define TRANSPOSE(x) ((x) >> 3) | (((x) & 7) << 3) 767 h->zigzag_scan8x8[i] = TRANSPOSE(ff_zigzag_direct[i]); 768 h->zigzag_scan8x8_cavlc[i] = TRANSPOSE(zigzag_scan8x8_cavlc[i]); 769 h->field_scan8x8[i] = TRANSPOSE(field_scan8x8[i]); 770 h->field_scan8x8_cavlc[i] = TRANSPOSE(field_scan8x8_cavlc[i]); 771#undef TRANSPOSE 772 } 773 if (h->ps.sps->transform_bypass) { // FIXME same ugly 774 memcpy(h->zigzag_scan_q0 , ff_zigzag_scan , sizeof(h->zigzag_scan_q0 )); 775 memcpy(h->zigzag_scan8x8_q0 , ff_zigzag_direct , sizeof(h->zigzag_scan8x8_q0 )); 776 memcpy(h->zigzag_scan8x8_cavlc_q0 , zigzag_scan8x8_cavlc , sizeof(h->zigzag_scan8x8_cavlc_q0)); 777 memcpy(h->field_scan_q0 , field_scan , sizeof(h->field_scan_q0 )); 778 memcpy(h->field_scan8x8_q0 , field_scan8x8 , sizeof(h->field_scan8x8_q0 )); 779 memcpy(h->field_scan8x8_cavlc_q0 , field_scan8x8_cavlc , sizeof(h->field_scan8x8_cavlc_q0 )); 780 } else { 781 memcpy(h->zigzag_scan_q0 , h->zigzag_scan , sizeof(h->zigzag_scan_q0 )); 782 memcpy(h->zigzag_scan8x8_q0 , h->zigzag_scan8x8 , sizeof(h->zigzag_scan8x8_q0 )); 783 memcpy(h->zigzag_scan8x8_cavlc_q0 , h->zigzag_scan8x8_cavlc , sizeof(h->zigzag_scan8x8_cavlc_q0)); 784 memcpy(h->field_scan_q0 , h->field_scan , sizeof(h->field_scan_q0 )); 785 memcpy(h->field_scan8x8_q0 , h->field_scan8x8 , sizeof(h->field_scan8x8_q0 )); 786 memcpy(h->field_scan8x8_cavlc_q0 , h->field_scan8x8_cavlc , sizeof(h->field_scan8x8_cavlc_q0 )); 787 } 788} 789 790static enum AVPixelFormat get_pixel_format(H264Context *h, int force_callback) 791{ 792#define HWACCEL_MAX (CONFIG_H264_DXVA2_HWACCEL + \ 793 (CONFIG_H264_D3D11VA_HWACCEL * 2) + \ 794 CONFIG_H264_NVDEC_HWACCEL + \ 795 CONFIG_H264_VAAPI_HWACCEL + \ 796 CONFIG_H264_VIDEOTOOLBOX_HWACCEL + \ 797 CONFIG_H264_VDPAU_HWACCEL) 798 enum AVPixelFormat pix_fmts[HWACCEL_MAX + 2], *fmt = pix_fmts; 799 const enum AVPixelFormat *choices = pix_fmts; 800 int i; 801 802 switch (h->ps.sps->bit_depth_luma) { 803 case 9: 804 if (CHROMA444(h)) { 805 if (h->avctx->colorspace == AVCOL_SPC_RGB) { 806 *fmt++ = AV_PIX_FMT_GBRP9; 807 } else 808 *fmt++ = AV_PIX_FMT_YUV444P9; 809 } else if (CHROMA422(h)) 810 *fmt++ = AV_PIX_FMT_YUV422P9; 811 else 812 *fmt++ = AV_PIX_FMT_YUV420P9; 813 break; 814 case 10: 815#if CONFIG_H264_VIDEOTOOLBOX_HWACCEL 816 if (h->avctx->colorspace != AVCOL_SPC_RGB) 817 *fmt++ = AV_PIX_FMT_VIDEOTOOLBOX; 818#endif 819 if (CHROMA444(h)) { 820 if (h->avctx->colorspace == AVCOL_SPC_RGB) { 821 *fmt++ = AV_PIX_FMT_GBRP10; 822 } else 823 *fmt++ = AV_PIX_FMT_YUV444P10; 824 } else if (CHROMA422(h)) 825 *fmt++ = AV_PIX_FMT_YUV422P10; 826 else 827 *fmt++ = AV_PIX_FMT_YUV420P10; 828 break; 829 case 12: 830 if (CHROMA444(h)) { 831 if (h->avctx->colorspace == AVCOL_SPC_RGB) { 832 *fmt++ = AV_PIX_FMT_GBRP12; 833 } else 834 *fmt++ = AV_PIX_FMT_YUV444P12; 835 } else if (CHROMA422(h)) 836 *fmt++ = AV_PIX_FMT_YUV422P12; 837 else 838 *fmt++ = AV_PIX_FMT_YUV420P12; 839 break; 840 case 14: 841 if (CHROMA444(h)) { 842 if (h->avctx->colorspace == AVCOL_SPC_RGB) { 843 *fmt++ = AV_PIX_FMT_GBRP14; 844 } else 845 *fmt++ = AV_PIX_FMT_YUV444P14; 846 } else if (CHROMA422(h)) 847 *fmt++ = AV_PIX_FMT_YUV422P14; 848 else 849 *fmt++ = AV_PIX_FMT_YUV420P14; 850 break; 851 case 8: 852#if CONFIG_H264_VDPAU_HWACCEL 853 *fmt++ = AV_PIX_FMT_VDPAU; 854#endif 855#if CONFIG_H264_NVDEC_HWACCEL 856 *fmt++ = AV_PIX_FMT_CUDA; 857#endif 858#if CONFIG_H264_VIDEOTOOLBOX_HWACCEL 859 if (h->avctx->colorspace != AVCOL_SPC_RGB) 860 *fmt++ = AV_PIX_FMT_VIDEOTOOLBOX; 861#endif 862 if (CHROMA444(h)) { 863 if (h->avctx->colorspace == AVCOL_SPC_RGB) 864 *fmt++ = AV_PIX_FMT_GBRP; 865 else if (h->avctx->color_range == AVCOL_RANGE_JPEG) 866 *fmt++ = AV_PIX_FMT_YUVJ444P; 867 else 868 *fmt++ = AV_PIX_FMT_YUV444P; 869 } else if (CHROMA422(h)) { 870 if (h->avctx->color_range == AVCOL_RANGE_JPEG) 871 *fmt++ = AV_PIX_FMT_YUVJ422P; 872 else 873 *fmt++ = AV_PIX_FMT_YUV422P; 874 } else { 875#if CONFIG_H264_DXVA2_HWACCEL 876 *fmt++ = AV_PIX_FMT_DXVA2_VLD; 877#endif 878#if CONFIG_H264_D3D11VA_HWACCEL 879 *fmt++ = AV_PIX_FMT_D3D11VA_VLD; 880 *fmt++ = AV_PIX_FMT_D3D11; 881#endif 882#if CONFIG_H264_VAAPI_HWACCEL 883 *fmt++ = AV_PIX_FMT_VAAPI; 884#endif 885 if (h->avctx->codec->pix_fmts) 886 choices = h->avctx->codec->pix_fmts; 887 else if (h->avctx->color_range == AVCOL_RANGE_JPEG) 888 *fmt++ = AV_PIX_FMT_YUVJ420P; 889 else 890 *fmt++ = AV_PIX_FMT_YUV420P; 891 } 892 break; 893 default: 894 av_log(h->avctx, AV_LOG_ERROR, 895 "Unsupported bit depth %d\n", h->ps.sps->bit_depth_luma); 896 return AVERROR_INVALIDDATA; 897 } 898 899 *fmt = AV_PIX_FMT_NONE; 900 901 for (i=0; choices[i] != AV_PIX_FMT_NONE; i++) 902 if (choices[i] == h->avctx->pix_fmt && !force_callback) 903 return choices[i]; 904 return ff_thread_get_format(h->avctx, choices); 905} 906 907/* export coded and cropped frame dimensions to AVCodecContext */ 908static void init_dimensions(H264Context *h) 909{ 910 const SPS *sps = (const SPS*)h->ps.sps; 911 int cr = sps->crop_right; 912 int cl = sps->crop_left; 913 int ct = sps->crop_top; 914 int cb = sps->crop_bottom; 915 int width = h->width - (cr + cl); 916 int height = h->height - (ct + cb); 917 av_assert0(sps->crop_right + sps->crop_left < (unsigned)h->width); 918 av_assert0(sps->crop_top + sps->crop_bottom < (unsigned)h->height); 919 920 /* handle container cropping */ 921 if (h->width_from_caller > 0 && h->height_from_caller > 0 && 922 !sps->crop_top && !sps->crop_left && 923 FFALIGN(h->width_from_caller, 16) == FFALIGN(width, 16) && 924 FFALIGN(h->height_from_caller, 16) == FFALIGN(height, 16) && 925 h->width_from_caller <= width && 926 h->height_from_caller <= height) { 927 width = h->width_from_caller; 928 height = h->height_from_caller; 929 cl = 0; 930 ct = 0; 931 cr = h->width - width; 932 cb = h->height - height; 933 } else { 934 h->width_from_caller = 0; 935 h->height_from_caller = 0; 936 } 937 938 h->avctx->coded_width = h->width; 939 h->avctx->coded_height = h->height; 940 h->avctx->width = width; 941 h->avctx->height = height; 942 h->crop_right = cr; 943 h->crop_left = cl; 944 h->crop_top = ct; 945 h->crop_bottom = cb; 946} 947 948static int h264_slice_header_init(H264Context *h) 949{ 950 const SPS *sps = h->ps.sps; 951 int i, ret; 952 953 if (!sps) { 954 ret = AVERROR_INVALIDDATA; 955 goto fail; 956 } 957 958 ff_set_sar(h->avctx, sps->sar); 959 av_pix_fmt_get_chroma_sub_sample(h->avctx->pix_fmt, 960 &h->chroma_x_shift, &h->chroma_y_shift); 961 962 if (sps->timing_info_present_flag) { 963 int64_t den = sps->time_scale; 964 if (h->x264_build < 44U) 965 den *= 2; 966 av_reduce(&h->avctx->framerate.den, &h->avctx->framerate.num, 967 sps->num_units_in_tick * h->avctx->ticks_per_frame, den, 1 << 30); 968 } 969 970 ff_h264_free_tables(h); 971 972 h->first_field = 0; 973 h->prev_interlaced_frame = 1; 974 975 init_scan_tables(h); 976 ret = ff_h264_alloc_tables(h); 977 if (ret < 0) { 978 av_log(h->avctx, AV_LOG_ERROR, "Could not allocate memory\n"); 979 goto fail; 980 } 981 982 if (sps->bit_depth_luma < 8 || sps->bit_depth_luma > 14 || 983 sps->bit_depth_luma == 11 || sps->bit_depth_luma == 13 984 ) { 985 av_log(h->avctx, AV_LOG_ERROR, "Unsupported bit depth %d\n", 986 sps->bit_depth_luma); 987 ret = AVERROR_INVALIDDATA; 988 goto fail; 989 } 990 991 h->cur_bit_depth_luma = 992 h->avctx->bits_per_raw_sample = sps->bit_depth_luma; 993 h->cur_chroma_format_idc = sps->chroma_format_idc; 994 h->pixel_shift = sps->bit_depth_luma > 8; 995 h->chroma_format_idc = sps->chroma_format_idc; 996 h->bit_depth_luma = sps->bit_depth_luma; 997 998 ff_h264dsp_init(&h->h264dsp, sps->bit_depth_luma, 999 sps->chroma_format_idc); 1000 ff_h264chroma_init(&h->h264chroma, sps->bit_depth_chroma); 1001 ff_h264qpel_init(&h->h264qpel, sps->bit_depth_luma); 1002 ff_h264_pred_init(&h->hpc, AV_CODEC_ID_H264, sps->bit_depth_luma, 1003 sps->chroma_format_idc); 1004 ff_videodsp_init(&h->vdsp, sps->bit_depth_luma); 1005 1006 if (!HAVE_THREADS || !(h->avctx->active_thread_type & FF_THREAD_SLICE)) { 1007 ff_h264_slice_context_init(h, &h->slice_ctx[0]); 1008 } else { 1009 for (i = 0; i < h->nb_slice_ctx; i++) { 1010 H264SliceContext *sl = &h->slice_ctx[i]; 1011 1012 sl->h264 = h; 1013 sl->intra4x4_pred_mode = h->intra4x4_pred_mode + i * 8 * 2 * h->mb_stride; 1014 sl->mvd_table[0] = h->mvd_table[0] + i * 8 * 2 * h->mb_stride; 1015 sl->mvd_table[1] = h->mvd_table[1] + i * 8 * 2 * h->mb_stride; 1016 1017 ff_h264_slice_context_init(h, sl); 1018 } 1019 } 1020 1021 h->context_initialized = 1; 1022 1023 return 0; 1024fail: 1025 ff_h264_free_tables(h); 1026 h->context_initialized = 0; 1027 return ret; 1028} 1029 1030static enum AVPixelFormat non_j_pixfmt(enum AVPixelFormat a) 1031{ 1032 switch (a) { 1033 case AV_PIX_FMT_YUVJ420P: return AV_PIX_FMT_YUV420P; 1034 case AV_PIX_FMT_YUVJ422P: return AV_PIX_FMT_YUV422P; 1035 case AV_PIX_FMT_YUVJ444P: return AV_PIX_FMT_YUV444P; 1036 default: 1037 return a; 1038 } 1039} 1040 1041static int h264_init_ps(H264Context *h, const H264SliceContext *sl, int first_slice) 1042{ 1043 const SPS *sps; 1044 int needs_reinit = 0, must_reinit, ret; 1045 1046 if (first_slice) { 1047 av_buffer_unref(&h->ps.pps_ref); 1048 h->ps.pps = NULL; 1049 h->ps.pps_ref = av_buffer_ref(h->ps.pps_list[sl->pps_id]); 1050 if (!h->ps.pps_ref) 1051 return AVERROR(ENOMEM); 1052 h->ps.pps = (const PPS*)h->ps.pps_ref->data; 1053 } 1054 1055 if (h->ps.sps != h->ps.pps->sps) { 1056 h->ps.sps = (const SPS*)h->ps.pps->sps; 1057 1058 if (h->mb_width != h->ps.sps->mb_width || 1059 h->mb_height != h->ps.sps->mb_height || 1060 h->cur_bit_depth_luma != h->ps.sps->bit_depth_luma || 1061 h->cur_chroma_format_idc != h->ps.sps->chroma_format_idc 1062 ) 1063 needs_reinit = 1; 1064 1065 if (h->bit_depth_luma != h->ps.sps->bit_depth_luma || 1066 h->chroma_format_idc != h->ps.sps->chroma_format_idc) 1067 needs_reinit = 1; 1068 } 1069 sps = h->ps.sps; 1070 1071 must_reinit = (h->context_initialized && 1072 ( 16*sps->mb_width != h->avctx->coded_width 1073 || 16*sps->mb_height != h->avctx->coded_height 1074 || h->cur_bit_depth_luma != sps->bit_depth_luma 1075 || h->cur_chroma_format_idc != sps->chroma_format_idc 1076 || h->mb_width != sps->mb_width 1077 || h->mb_height != sps->mb_height 1078 )); 1079 if (h->avctx->pix_fmt == AV_PIX_FMT_NONE 1080 || (non_j_pixfmt(h->avctx->pix_fmt) != non_j_pixfmt(get_pixel_format(h, 0)))) 1081 must_reinit = 1; 1082 1083 if (first_slice && av_cmp_q(sps->sar, h->avctx->sample_aspect_ratio)) 1084 must_reinit = 1; 1085 1086 if (!h->setup_finished) { 1087 h->avctx->profile = ff_h264_get_profile(sps); 1088 h->avctx->level = sps->level_idc; 1089 h->avctx->refs = sps->ref_frame_count; 1090 1091 h->mb_width = sps->mb_width; 1092 h->mb_height = sps->mb_height; 1093 h->mb_num = h->mb_width * h->mb_height; 1094 h->mb_stride = h->mb_width + 1; 1095 1096 h->b_stride = h->mb_width * 4; 1097 1098 h->chroma_y_shift = sps->chroma_format_idc <= 1; // 400 uses yuv420p 1099 1100 h->width = 16 * h->mb_width; 1101 h->height = 16 * h->mb_height; 1102 1103 init_dimensions(h); 1104 1105 if (sps->video_signal_type_present_flag) { 1106 h->avctx->color_range = sps->full_range > 0 ? AVCOL_RANGE_JPEG 1107 : AVCOL_RANGE_MPEG; 1108 if (sps->colour_description_present_flag) { 1109 if (h->avctx->colorspace != sps->colorspace) 1110 needs_reinit = 1; 1111 h->avctx->color_primaries = sps->color_primaries; 1112 h->avctx->color_trc = sps->color_trc; 1113 h->avctx->colorspace = sps->colorspace; 1114 } 1115 } 1116 1117 if (h->sei.alternative_transfer.present && 1118 av_color_transfer_name(h->sei.alternative_transfer.preferred_transfer_characteristics) && 1119 h->sei.alternative_transfer.preferred_transfer_characteristics != AVCOL_TRC_UNSPECIFIED) { 1120 h->avctx->color_trc = h->sei.alternative_transfer.preferred_transfer_characteristics; 1121 } 1122 } 1123 h->avctx->chroma_sample_location = sps->chroma_location; 1124 1125 if (!h->context_initialized || must_reinit || needs_reinit) { 1126 int flush_changes = h->context_initialized; 1127 h->context_initialized = 0; 1128 if (sl != h->slice_ctx) { 1129 av_log(h->avctx, AV_LOG_ERROR, 1130 "changing width %d -> %d / height %d -> %d on " 1131 "slice %d\n", 1132 h->width, h->avctx->coded_width, 1133 h->height, h->avctx->coded_height, 1134 h->current_slice + 1); 1135 return AVERROR_INVALIDDATA; 1136 } 1137 1138 av_assert1(first_slice); 1139 1140 if (flush_changes) 1141 ff_h264_flush_change(h); 1142 1143 if ((ret = get_pixel_format(h, 1)) < 0) 1144 return ret; 1145 h->avctx->pix_fmt = ret; 1146 1147 av_log(h->avctx, AV_LOG_VERBOSE, "Reinit context to %dx%d, " 1148 "pix_fmt: %s\n", h->width, h->height, av_get_pix_fmt_name(h->avctx->pix_fmt)); 1149 1150 if ((ret = h264_slice_header_init(h)) < 0) { 1151 av_log(h->avctx, AV_LOG_ERROR, 1152 "h264_slice_header_init() failed\n"); 1153 return ret; 1154 } 1155 } 1156 1157 return 0; 1158} 1159 1160static int h264_export_frame_props(H264Context *h) 1161{ 1162 const SPS *sps = h->ps.sps; 1163 H264Picture *cur = h->cur_pic_ptr; 1164 AVFrame *out = cur->f; 1165 1166 out->interlaced_frame = 0; 1167 out->repeat_pict = 0; 1168 1169 /* Signal interlacing information externally. */ 1170 /* Prioritize picture timing SEI information over used 1171 * decoding process if it exists. */ 1172 if (h->sei.picture_timing.present) { 1173 int ret = ff_h264_sei_process_picture_timing(&h->sei.picture_timing, sps, 1174 h->avctx); 1175 if (ret < 0) { 1176 av_log(h->avctx, AV_LOG_ERROR, "Error processing a picture timing SEI\n"); 1177 if (h->avctx->err_recognition & AV_EF_EXPLODE) 1178 return ret; 1179 h->sei.picture_timing.present = 0; 1180 } 1181 } 1182 1183 if (sps->pic_struct_present_flag && h->sei.picture_timing.present) { 1184 H264SEIPictureTiming *pt = &h->sei.picture_timing; 1185 switch (pt->pic_struct) { 1186 case H264_SEI_PIC_STRUCT_FRAME: 1187 break; 1188 case H264_SEI_PIC_STRUCT_TOP_FIELD: 1189 case H264_SEI_PIC_STRUCT_BOTTOM_FIELD: 1190 out->interlaced_frame = 1; 1191 break; 1192 case H264_SEI_PIC_STRUCT_TOP_BOTTOM: 1193 case H264_SEI_PIC_STRUCT_BOTTOM_TOP: 1194 if (FIELD_OR_MBAFF_PICTURE(h)) 1195 out->interlaced_frame = 1; 1196 else 1197 // try to flag soft telecine progressive 1198 out->interlaced_frame = h->prev_interlaced_frame; 1199 break; 1200 case H264_SEI_PIC_STRUCT_TOP_BOTTOM_TOP: 1201 case H264_SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM: 1202 /* Signal the possibility of telecined film externally 1203 * (pic_struct 5,6). From these hints, let the applications 1204 * decide if they apply deinterlacing. */ 1205 out->repeat_pict = 1; 1206 break; 1207 case H264_SEI_PIC_STRUCT_FRAME_DOUBLING: 1208 out->repeat_pict = 2; 1209 break; 1210 case H264_SEI_PIC_STRUCT_FRAME_TRIPLING: 1211 out->repeat_pict = 4; 1212 break; 1213 } 1214 1215 if ((pt->ct_type & 3) && 1216 pt->pic_struct <= H264_SEI_PIC_STRUCT_BOTTOM_TOP) 1217 out->interlaced_frame = (pt->ct_type & (1 << 1)) != 0; 1218 } else { 1219 /* Derive interlacing flag from used decoding process. */ 1220 out->interlaced_frame = FIELD_OR_MBAFF_PICTURE(h); 1221 } 1222 h->prev_interlaced_frame = out->interlaced_frame; 1223 1224 if (cur->field_poc[0] != cur->field_poc[1]) { 1225 /* Derive top_field_first from field pocs. */ 1226 out->top_field_first = cur->field_poc[0] < cur->field_poc[1]; 1227 } else { 1228 if (sps->pic_struct_present_flag && h->sei.picture_timing.present) { 1229 /* Use picture timing SEI information. Even if it is a 1230 * information of a past frame, better than nothing. */ 1231 if (h->sei.picture_timing.pic_struct == H264_SEI_PIC_STRUCT_TOP_BOTTOM || 1232 h->sei.picture_timing.pic_struct == H264_SEI_PIC_STRUCT_TOP_BOTTOM_TOP) 1233 out->top_field_first = 1; 1234 else 1235 out->top_field_first = 0; 1236 } else if (out->interlaced_frame) { 1237 /* Default to top field first when pic_struct_present_flag 1238 * is not set but interlaced frame detected */ 1239 out->top_field_first = 1; 1240 } else { 1241 /* Most likely progressive */ 1242 out->top_field_first = 0; 1243 } 1244 } 1245 1246 if (h->sei.frame_packing.present && 1247 h->sei.frame_packing.arrangement_type <= 6 && 1248 h->sei.frame_packing.content_interpretation_type > 0 && 1249 h->sei.frame_packing.content_interpretation_type < 3) { 1250 H264SEIFramePacking *fp = &h->sei.frame_packing; 1251 AVStereo3D *stereo = av_stereo3d_create_side_data(out); 1252 if (stereo) { 1253 switch (fp->arrangement_type) { 1254 case H264_SEI_FPA_TYPE_CHECKERBOARD: 1255 stereo->type = AV_STEREO3D_CHECKERBOARD; 1256 break; 1257 case H264_SEI_FPA_TYPE_INTERLEAVE_COLUMN: 1258 stereo->type = AV_STEREO3D_COLUMNS; 1259 break; 1260 case H264_SEI_FPA_TYPE_INTERLEAVE_ROW: 1261 stereo->type = AV_STEREO3D_LINES; 1262 break; 1263 case H264_SEI_FPA_TYPE_SIDE_BY_SIDE: 1264 if (fp->quincunx_sampling_flag) 1265 stereo->type = AV_STEREO3D_SIDEBYSIDE_QUINCUNX; 1266 else 1267 stereo->type = AV_STEREO3D_SIDEBYSIDE; 1268 break; 1269 case H264_SEI_FPA_TYPE_TOP_BOTTOM: 1270 stereo->type = AV_STEREO3D_TOPBOTTOM; 1271 break; 1272 case H264_SEI_FPA_TYPE_INTERLEAVE_TEMPORAL: 1273 stereo->type = AV_STEREO3D_FRAMESEQUENCE; 1274 break; 1275 case H264_SEI_FPA_TYPE_2D: 1276 stereo->type = AV_STEREO3D_2D; 1277 break; 1278 } 1279 1280 if (fp->content_interpretation_type == 2) 1281 stereo->flags = AV_STEREO3D_FLAG_INVERT; 1282 1283 if (fp->arrangement_type == H264_SEI_FPA_TYPE_INTERLEAVE_TEMPORAL) { 1284 if (fp->current_frame_is_frame0_flag) 1285 stereo->view = AV_STEREO3D_VIEW_LEFT; 1286 else 1287 stereo->view = AV_STEREO3D_VIEW_RIGHT; 1288 } 1289 } 1290 } 1291 1292 if (h->sei.display_orientation.present && 1293 (h->sei.display_orientation.anticlockwise_rotation || 1294 h->sei.display_orientation.hflip || 1295 h->sei.display_orientation.vflip)) { 1296 H264SEIDisplayOrientation *o = &h->sei.display_orientation; 1297 double angle = o->anticlockwise_rotation * 360 / (double) (1 << 16); 1298 AVFrameSideData *rotation = av_frame_new_side_data(out, 1299 AV_FRAME_DATA_DISPLAYMATRIX, 1300 sizeof(int32_t) * 9); 1301 if (rotation) { 1302 /* av_display_rotation_set() expects the angle in the clockwise 1303 * direction, hence the first minus. 1304 * The below code applies the flips after the rotation, yet 1305 * the H.2645 specs require flipping to be applied first. 1306 * Because of R O(phi) = O(-phi) R (where R is flipping around 1307 * an arbitatry axis and O(phi) is the proper rotation by phi) 1308 * we can create display matrices as desired by negating 1309 * the degree once for every flip applied. */ 1310 angle = -angle * (1 - 2 * !!o->hflip) * (1 - 2 * !!o->vflip); 1311 av_display_rotation_set((int32_t *)rotation->data, angle); 1312 av_display_matrix_flip((int32_t *)rotation->data, 1313 o->hflip, o->vflip); 1314 } 1315 } 1316 1317 if (h->sei.afd.present) { 1318 AVFrameSideData *sd = av_frame_new_side_data(out, AV_FRAME_DATA_AFD, 1319 sizeof(uint8_t)); 1320 1321 if (sd) { 1322 *sd->data = h->sei.afd.active_format_description; 1323 h->sei.afd.present = 0; 1324 } 1325 } 1326 1327 if (h->sei.a53_caption.buf_ref) { 1328 H264SEIA53Caption *a53 = &h->sei.a53_caption; 1329 1330 AVFrameSideData *sd = av_frame_new_side_data_from_buf(out, AV_FRAME_DATA_A53_CC, a53->buf_ref); 1331 if (!sd) 1332 av_buffer_unref(&a53->buf_ref); 1333 a53->buf_ref = NULL; 1334 1335 h->avctx->properties |= FF_CODEC_PROPERTY_CLOSED_CAPTIONS; 1336 } 1337 1338 for (int i = 0; i < h->sei.unregistered.nb_buf_ref; i++) { 1339 H264SEIUnregistered *unreg = &h->sei.unregistered; 1340 1341 if (unreg->buf_ref[i]) { 1342 AVFrameSideData *sd = av_frame_new_side_data_from_buf(out, 1343 AV_FRAME_DATA_SEI_UNREGISTERED, 1344 unreg->buf_ref[i]); 1345 if (!sd) 1346 av_buffer_unref(&unreg->buf_ref[i]); 1347 unreg->buf_ref[i] = NULL; 1348 } 1349 } 1350 h->sei.unregistered.nb_buf_ref = 0; 1351 1352 if (h->sei.film_grain_characteristics.present) { 1353 H264SEIFilmGrainCharacteristics *fgc = &h->sei.film_grain_characteristics; 1354 AVFilmGrainParams *fgp = av_film_grain_params_create_side_data(out); 1355 if (!fgp) 1356 return AVERROR(ENOMEM); 1357 1358 fgp->type = AV_FILM_GRAIN_PARAMS_H274; 1359 fgp->seed = cur->poc + (h->poc_offset << 5); 1360 1361 fgp->codec.h274.model_id = fgc->model_id; 1362 if (fgc->separate_colour_description_present_flag) { 1363 fgp->codec.h274.bit_depth_luma = fgc->bit_depth_luma; 1364 fgp->codec.h274.bit_depth_chroma = fgc->bit_depth_chroma; 1365 fgp->codec.h274.color_range = fgc->full_range + 1; 1366 fgp->codec.h274.color_primaries = fgc->color_primaries; 1367 fgp->codec.h274.color_trc = fgc->transfer_characteristics; 1368 fgp->codec.h274.color_space = fgc->matrix_coeffs; 1369 } else { 1370 fgp->codec.h274.bit_depth_luma = sps->bit_depth_luma; 1371 fgp->codec.h274.bit_depth_chroma = sps->bit_depth_chroma; 1372 if (sps->video_signal_type_present_flag) 1373 fgp->codec.h274.color_range = sps->full_range + 1; 1374 else 1375 fgp->codec.h274.color_range = AVCOL_RANGE_UNSPECIFIED; 1376 if (sps->colour_description_present_flag) { 1377 fgp->codec.h274.color_primaries = sps->color_primaries; 1378 fgp->codec.h274.color_trc = sps->color_trc; 1379 fgp->codec.h274.color_space = sps->colorspace; 1380 } else { 1381 fgp->codec.h274.color_primaries = AVCOL_PRI_UNSPECIFIED; 1382 fgp->codec.h274.color_trc = AVCOL_TRC_UNSPECIFIED; 1383 fgp->codec.h274.color_space = AVCOL_SPC_UNSPECIFIED; 1384 } 1385 } 1386 fgp->codec.h274.blending_mode_id = fgc->blending_mode_id; 1387 fgp->codec.h274.log2_scale_factor = fgc->log2_scale_factor; 1388 1389 memcpy(&fgp->codec.h274.component_model_present, &fgc->comp_model_present_flag, 1390 sizeof(fgp->codec.h274.component_model_present)); 1391 memcpy(&fgp->codec.h274.num_intensity_intervals, &fgc->num_intensity_intervals, 1392 sizeof(fgp->codec.h274.num_intensity_intervals)); 1393 memcpy(&fgp->codec.h274.num_model_values, &fgc->num_model_values, 1394 sizeof(fgp->codec.h274.num_model_values)); 1395 memcpy(&fgp->codec.h274.intensity_interval_lower_bound, &fgc->intensity_interval_lower_bound, 1396 sizeof(fgp->codec.h274.intensity_interval_lower_bound)); 1397 memcpy(&fgp->codec.h274.intensity_interval_upper_bound, &fgc->intensity_interval_upper_bound, 1398 sizeof(fgp->codec.h274.intensity_interval_upper_bound)); 1399 memcpy(&fgp->codec.h274.comp_model_value, &fgc->comp_model_value, 1400 sizeof(fgp->codec.h274.comp_model_value)); 1401 1402 fgc->present = !!fgc->repetition_period; 1403 1404 h->avctx->properties |= FF_CODEC_PROPERTY_FILM_GRAIN; 1405 } 1406 1407 if (h->sei.picture_timing.timecode_cnt > 0) { 1408 uint32_t *tc_sd; 1409 char tcbuf[AV_TIMECODE_STR_SIZE]; 1410 1411 AVFrameSideData *tcside = av_frame_new_side_data(out, 1412 AV_FRAME_DATA_S12M_TIMECODE, 1413 sizeof(uint32_t)*4); 1414 if (!tcside) 1415 return AVERROR(ENOMEM); 1416 1417 tc_sd = (uint32_t*)tcside->data; 1418 tc_sd[0] = h->sei.picture_timing.timecode_cnt; 1419 1420 for (int i = 0; i < tc_sd[0]; i++) { 1421 int drop = h->sei.picture_timing.timecode[i].dropframe; 1422 int hh = h->sei.picture_timing.timecode[i].hours; 1423 int mm = h->sei.picture_timing.timecode[i].minutes; 1424 int ss = h->sei.picture_timing.timecode[i].seconds; 1425 int ff = h->sei.picture_timing.timecode[i].frame; 1426 1427 tc_sd[i + 1] = av_timecode_get_smpte(h->avctx->framerate, drop, hh, mm, ss, ff); 1428 av_timecode_make_smpte_tc_string2(tcbuf, h->avctx->framerate, tc_sd[i + 1], 0, 0); 1429 av_dict_set(&out->metadata, "timecode", tcbuf, 0); 1430 } 1431 h->sei.picture_timing.timecode_cnt = 0; 1432 } 1433 1434 return 0; 1435} 1436 1437static int h264_select_output_frame(H264Context *h) 1438{ 1439 const SPS *sps = h->ps.sps; 1440 H264Picture *out = h->cur_pic_ptr; 1441 H264Picture *cur = h->cur_pic_ptr; 1442 int i, pics, out_of_order, out_idx; 1443 1444 cur->mmco_reset = h->mmco_reset; 1445 h->mmco_reset = 0; 1446 1447 if (sps->bitstream_restriction_flag || 1448 h->avctx->strict_std_compliance >= FF_COMPLIANCE_STRICT) { 1449 h->avctx->has_b_frames = FFMAX(h->avctx->has_b_frames, sps->num_reorder_frames); 1450 } 1451 1452 for (i = 0; 1; i++) { 1453 if(i == H264_MAX_DPB_FRAMES || cur->poc < h->last_pocs[i]){ 1454 if(i) 1455 h->last_pocs[i-1] = cur->poc; 1456 break; 1457 } else if(i) { 1458 h->last_pocs[i-1]= h->last_pocs[i]; 1459 } 1460 } 1461 out_of_order = H264_MAX_DPB_FRAMES - i; 1462 if( cur->f->pict_type == AV_PICTURE_TYPE_B 1463 || (h->last_pocs[H264_MAX_DPB_FRAMES-2] > INT_MIN && h->last_pocs[H264_MAX_DPB_FRAMES-1] - (int64_t)h->last_pocs[H264_MAX_DPB_FRAMES-2] > 2)) 1464 out_of_order = FFMAX(out_of_order, 1); 1465 if (out_of_order == H264_MAX_DPB_FRAMES) { 1466 av_log(h->avctx, AV_LOG_VERBOSE, "Invalid POC %d<%d\n", cur->poc, h->last_pocs[0]); 1467 for (i = 1; i < H264_MAX_DPB_FRAMES; i++) 1468 h->last_pocs[i] = INT_MIN; 1469 h->last_pocs[0] = cur->poc; 1470 cur->mmco_reset = 1; 1471 } else if(h->avctx->has_b_frames < out_of_order && !sps->bitstream_restriction_flag){ 1472 int loglevel = h->avctx->frame_number > 1 ? AV_LOG_WARNING : AV_LOG_VERBOSE; 1473 av_log(h->avctx, loglevel, "Increasing reorder buffer to %d\n", out_of_order); 1474 h->avctx->has_b_frames = out_of_order; 1475 } 1476 1477 pics = 0; 1478 while (h->delayed_pic[pics]) 1479 pics++; 1480 1481 av_assert0(pics <= H264_MAX_DPB_FRAMES); 1482 1483 h->delayed_pic[pics++] = cur; 1484 if (cur->reference == 0) 1485 cur->reference = DELAYED_PIC_REF; 1486 1487 out = h->delayed_pic[0]; 1488 out_idx = 0; 1489 for (i = 1; h->delayed_pic[i] && 1490 !h->delayed_pic[i]->f->key_frame && 1491 !h->delayed_pic[i]->mmco_reset; 1492 i++) 1493 if (h->delayed_pic[i]->poc < out->poc) { 1494 out = h->delayed_pic[i]; 1495 out_idx = i; 1496 } 1497 if (h->avctx->has_b_frames == 0 && 1498 (h->delayed_pic[0]->f->key_frame || h->delayed_pic[0]->mmco_reset)) 1499 h->next_outputed_poc = INT_MIN; 1500 out_of_order = out->poc < h->next_outputed_poc; 1501 1502 if (out_of_order || pics > h->avctx->has_b_frames) { 1503 out->reference &= ~DELAYED_PIC_REF; 1504 for (i = out_idx; h->delayed_pic[i]; i++) 1505 h->delayed_pic[i] = h->delayed_pic[i + 1]; 1506 } 1507 if (!out_of_order && pics > h->avctx->has_b_frames) { 1508 h->next_output_pic = out; 1509 if (out_idx == 0 && h->delayed_pic[0] && (h->delayed_pic[0]->f->key_frame || h->delayed_pic[0]->mmco_reset)) { 1510 h->next_outputed_poc = INT_MIN; 1511 } else 1512 h->next_outputed_poc = out->poc; 1513 1514 if (out->recovered) { 1515 // We have reached an recovery point and all frames after it in 1516 // display order are "recovered". 1517 h->frame_recovered |= FRAME_RECOVERED_SEI; 1518 } 1519 out->recovered |= !!(h->frame_recovered & FRAME_RECOVERED_SEI); 1520 1521 if (!out->recovered) { 1522 if (!(h->avctx->flags & AV_CODEC_FLAG_OUTPUT_CORRUPT) && 1523 !(h->avctx->flags2 & AV_CODEC_FLAG2_SHOW_ALL)) { 1524 h->next_output_pic = NULL; 1525 } else { 1526 out->f->flags |= AV_FRAME_FLAG_CORRUPT; 1527 } 1528 } 1529 } else { 1530 av_log(h->avctx, AV_LOG_DEBUG, "no picture %s\n", out_of_order ? "ooo" : ""); 1531 } 1532 1533 return 0; 1534} 1535 1536/* This function is called right after decoding the slice header for a first 1537 * slice in a field (or a frame). It decides whether we are decoding a new frame 1538 * or a second field in a pair and does the necessary setup. 1539 */ 1540static int h264_field_start(H264Context *h, const H264SliceContext *sl, 1541 const H2645NAL *nal, int first_slice) 1542{ 1543 int i; 1544 const SPS *sps; 1545 1546 int last_pic_structure, last_pic_droppable, ret; 1547 1548 ret = h264_init_ps(h, sl, first_slice); 1549 if (ret < 0) 1550 return ret; 1551 1552 sps = h->ps.sps; 1553 1554 if (sps && sps->bitstream_restriction_flag && 1555 h->avctx->has_b_frames < sps->num_reorder_frames) { 1556 h->avctx->has_b_frames = sps->num_reorder_frames; 1557 } 1558 1559 last_pic_droppable = h->droppable; 1560 last_pic_structure = h->picture_structure; 1561 h->droppable = (nal->ref_idc == 0); 1562 h->picture_structure = sl->picture_structure; 1563 1564 h->poc.frame_num = sl->frame_num; 1565 h->poc.poc_lsb = sl->poc_lsb; 1566 h->poc.delta_poc_bottom = sl->delta_poc_bottom; 1567 h->poc.delta_poc[0] = sl->delta_poc[0]; 1568 h->poc.delta_poc[1] = sl->delta_poc[1]; 1569 1570 if (nal->type == H264_NAL_IDR_SLICE) 1571 h->poc_offset = sl->idr_pic_id; 1572 else if (h->picture_intra_only) 1573 h->poc_offset = 0; 1574 1575 /* Shorten frame num gaps so we don't have to allocate reference 1576 * frames just to throw them away */ 1577 if (h->poc.frame_num != h->poc.prev_frame_num) { 1578 int unwrap_prev_frame_num = h->poc.prev_frame_num; 1579 int max_frame_num = 1 << sps->log2_max_frame_num; 1580 1581 if (unwrap_prev_frame_num > h->poc.frame_num) 1582 unwrap_prev_frame_num -= max_frame_num; 1583 1584 if ((h->poc.frame_num - unwrap_prev_frame_num) > sps->ref_frame_count) { 1585 unwrap_prev_frame_num = (h->poc.frame_num - sps->ref_frame_count) - 1; 1586 if (unwrap_prev_frame_num < 0) 1587 unwrap_prev_frame_num += max_frame_num; 1588 1589 h->poc.prev_frame_num = unwrap_prev_frame_num; 1590 } 1591 } 1592 1593 /* See if we have a decoded first field looking for a pair... 1594 * Here, we're using that to see if we should mark previously 1595 * decode frames as "finished". 1596 * We have to do that before the "dummy" in-between frame allocation, 1597 * since that can modify h->cur_pic_ptr. */ 1598 if (h->first_field) { 1599 int last_field = last_pic_structure == PICT_BOTTOM_FIELD; 1600 av_assert0(h->cur_pic_ptr); 1601 av_assert0(h->cur_pic_ptr->f->buf[0]); 1602 assert(h->cur_pic_ptr->reference != DELAYED_PIC_REF); 1603 1604 /* Mark old field/frame as completed */ 1605 if (h->cur_pic_ptr->tf.owner[last_field] == h->avctx) { 1606 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX, last_field); 1607 } 1608 1609 /* figure out if we have a complementary field pair */ 1610 if (!FIELD_PICTURE(h) || h->picture_structure == last_pic_structure) { 1611 /* Previous field is unmatched. Don't display it, but let it 1612 * remain for reference if marked as such. */ 1613 if (last_pic_structure != PICT_FRAME) { 1614 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX, 1615 last_pic_structure == PICT_TOP_FIELD); 1616 } 1617 } else { 1618 if (h->cur_pic_ptr->frame_num != h->poc.frame_num) { 1619 /* This and previous field were reference, but had 1620 * different frame_nums. Consider this field first in 1621 * pair. Throw away previous field except for reference 1622 * purposes. */ 1623 if (last_pic_structure != PICT_FRAME) { 1624 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX, 1625 last_pic_structure == PICT_TOP_FIELD); 1626 } 1627 } else { 1628 /* Second field in complementary pair */ 1629 if (!((last_pic_structure == PICT_TOP_FIELD && 1630 h->picture_structure == PICT_BOTTOM_FIELD) || 1631 (last_pic_structure == PICT_BOTTOM_FIELD && 1632 h->picture_structure == PICT_TOP_FIELD))) { 1633 av_log(h->avctx, AV_LOG_ERROR, 1634 "Invalid field mode combination %d/%d\n", 1635 last_pic_structure, h->picture_structure); 1636 h->picture_structure = last_pic_structure; 1637 h->droppable = last_pic_droppable; 1638 return AVERROR_INVALIDDATA; 1639 } else if (last_pic_droppable != h->droppable) { 1640 avpriv_request_sample(h->avctx, 1641 "Found reference and non-reference fields in the same frame, which"); 1642 h->picture_structure = last_pic_structure; 1643 h->droppable = last_pic_droppable; 1644 return AVERROR_PATCHWELCOME; 1645 } 1646 } 1647 } 1648 } 1649 1650 while (h->poc.frame_num != h->poc.prev_frame_num && !h->first_field && 1651 h->poc.frame_num != (h->poc.prev_frame_num + 1) % (1 << sps->log2_max_frame_num)) { 1652 H264Picture *prev = h->short_ref_count ? h->short_ref[0] : NULL; 1653 av_log(h->avctx, AV_LOG_DEBUG, "Frame num gap %d %d\n", 1654 h->poc.frame_num, h->poc.prev_frame_num); 1655 if (!sps->gaps_in_frame_num_allowed_flag) 1656 for(i=0; i<FF_ARRAY_ELEMS(h->last_pocs); i++) 1657 h->last_pocs[i] = INT_MIN; 1658 ret = h264_frame_start(h); 1659 if (ret < 0) { 1660 h->first_field = 0; 1661 return ret; 1662 } 1663 1664 h->poc.prev_frame_num++; 1665 h->poc.prev_frame_num %= 1 << sps->log2_max_frame_num; 1666 h->cur_pic_ptr->frame_num = h->poc.prev_frame_num; 1667 h->cur_pic_ptr->invalid_gap = !sps->gaps_in_frame_num_allowed_flag; 1668 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX, 0); 1669 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX, 1); 1670 1671 h->explicit_ref_marking = 0; 1672 ret = ff_h264_execute_ref_pic_marking(h); 1673 if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE)) 1674 return ret; 1675 /* Error concealment: If a ref is missing, copy the previous ref 1676 * in its place. 1677 * FIXME: Avoiding a memcpy would be nice, but ref handling makes 1678 * many assumptions about there being no actual duplicates. 1679 * FIXME: This does not copy padding for out-of-frame motion 1680 * vectors. Given we are concealing a lost frame, this probably 1681 * is not noticeable by comparison, but it should be fixed. */ 1682 if (h->short_ref_count) { 1683 int c[4] = { 1684 1<<(h->ps.sps->bit_depth_luma-1), 1685 1<<(h->ps.sps->bit_depth_chroma-1), 1686 1<<(h->ps.sps->bit_depth_chroma-1), 1687 -1 1688 }; 1689 1690 if (prev && 1691 h->short_ref[0]->f->width == prev->f->width && 1692 h->short_ref[0]->f->height == prev->f->height && 1693 h->short_ref[0]->f->format == prev->f->format) { 1694 ff_thread_await_progress(&prev->tf, INT_MAX, 0); 1695 if (prev->field_picture) 1696 ff_thread_await_progress(&prev->tf, INT_MAX, 1); 1697 ff_thread_release_ext_buffer(h->avctx, &h->short_ref[0]->tf); 1698 h->short_ref[0]->tf.f = h->short_ref[0]->f; 1699 ret = ff_thread_ref_frame(&h->short_ref[0]->tf, &prev->tf); 1700 if (ret < 0) 1701 return ret; 1702 h->short_ref[0]->poc = prev->poc + 2U; 1703 ff_thread_report_progress(&h->short_ref[0]->tf, INT_MAX, 0); 1704 if (h->short_ref[0]->field_picture) 1705 ff_thread_report_progress(&h->short_ref[0]->tf, INT_MAX, 1); 1706 } else if (!h->frame_recovered && !h->avctx->hwaccel) 1707 ff_color_frame(h->short_ref[0]->f, c); 1708 h->short_ref[0]->frame_num = h->poc.prev_frame_num; 1709 } 1710 } 1711 1712 /* See if we have a decoded first field looking for a pair... 1713 * We're using that to see whether to continue decoding in that 1714 * frame, or to allocate a new one. */ 1715 if (h->first_field) { 1716 av_assert0(h->cur_pic_ptr); 1717 av_assert0(h->cur_pic_ptr->f->buf[0]); 1718 assert(h->cur_pic_ptr->reference != DELAYED_PIC_REF); 1719 1720 /* figure out if we have a complementary field pair */ 1721 if (!FIELD_PICTURE(h) || h->picture_structure == last_pic_structure) { 1722 /* Previous field is unmatched. Don't display it, but let it 1723 * remain for reference if marked as such. */ 1724 h->missing_fields ++; 1725 h->cur_pic_ptr = NULL; 1726 h->first_field = FIELD_PICTURE(h); 1727 } else { 1728 h->missing_fields = 0; 1729 if (h->cur_pic_ptr->frame_num != h->poc.frame_num) { 1730 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX, 1731 h->picture_structure==PICT_BOTTOM_FIELD); 1732 /* This and the previous field had different frame_nums. 1733 * Consider this field first in pair. Throw away previous 1734 * one except for reference purposes. */ 1735 h->first_field = 1; 1736 h->cur_pic_ptr = NULL; 1737 } else if (h->cur_pic_ptr->reference & DELAYED_PIC_REF) { 1738 /* This frame was already output, we cannot draw into it 1739 * anymore. 1740 */ 1741 h->first_field = 1; 1742 h->cur_pic_ptr = NULL; 1743 } else { 1744 /* Second field in complementary pair */ 1745 h->first_field = 0; 1746 } 1747 } 1748 } else { 1749 /* Frame or first field in a potentially complementary pair */ 1750 h->first_field = FIELD_PICTURE(h); 1751 } 1752 1753 if (!FIELD_PICTURE(h) || h->first_field) { 1754 if (h264_frame_start(h) < 0) { 1755 h->first_field = 0; 1756 return AVERROR_INVALIDDATA; 1757 } 1758 } else { 1759 int field = h->picture_structure == PICT_BOTTOM_FIELD; 1760 release_unused_pictures(h, 0); 1761 h->cur_pic_ptr->tf.owner[field] = h->avctx; 1762 } 1763 /* Some macroblocks can be accessed before they're available in case 1764 * of lost slices, MBAFF or threading. */ 1765 if (FIELD_PICTURE(h)) { 1766 for(i = (h->picture_structure == PICT_BOTTOM_FIELD); i<h->mb_height; i++) 1767 memset(h->slice_table + i*h->mb_stride, -1, (h->mb_stride - (i+1==h->mb_height)) * sizeof(*h->slice_table)); 1768 } else { 1769 memset(h->slice_table, -1, 1770 (h->mb_height * h->mb_stride - 1) * sizeof(*h->slice_table)); 1771 } 1772 1773 ret = ff_h264_init_poc(h->cur_pic_ptr->field_poc, &h->cur_pic_ptr->poc, 1774 h->ps.sps, &h->poc, h->picture_structure, nal->ref_idc); 1775 if (ret < 0) 1776 return ret; 1777 1778 memcpy(h->mmco, sl->mmco, sl->nb_mmco * sizeof(*h->mmco)); 1779 h->nb_mmco = sl->nb_mmco; 1780 h->explicit_ref_marking = sl->explicit_ref_marking; 1781 1782 h->picture_idr = nal->type == H264_NAL_IDR_SLICE; 1783 1784 if (h->sei.recovery_point.recovery_frame_cnt >= 0) { 1785 const int sei_recovery_frame_cnt = h->sei.recovery_point.recovery_frame_cnt; 1786 1787 if (h->poc.frame_num != sei_recovery_frame_cnt || sl->slice_type_nos != AV_PICTURE_TYPE_I) 1788 h->valid_recovery_point = 1; 1789 1790 if ( h->recovery_frame < 0 1791 || av_mod_uintp2(h->recovery_frame - h->poc.frame_num, h->ps.sps->log2_max_frame_num) > sei_recovery_frame_cnt) { 1792 h->recovery_frame = av_mod_uintp2(h->poc.frame_num + sei_recovery_frame_cnt, h->ps.sps->log2_max_frame_num); 1793 1794 if (!h->valid_recovery_point) 1795 h->recovery_frame = h->poc.frame_num; 1796 } 1797 } 1798 1799 h->cur_pic_ptr->f->key_frame |= (nal->type == H264_NAL_IDR_SLICE); 1800 1801 if (nal->type == H264_NAL_IDR_SLICE || 1802 (h->recovery_frame == h->poc.frame_num && nal->ref_idc)) { 1803 h->recovery_frame = -1; 1804 h->cur_pic_ptr->recovered = 1; 1805 } 1806 // If we have an IDR, all frames after it in decoded order are 1807 // "recovered". 1808 if (nal->type == H264_NAL_IDR_SLICE) 1809 h->frame_recovered |= FRAME_RECOVERED_IDR; 1810#if 1 1811 h->cur_pic_ptr->recovered |= h->frame_recovered; 1812#else 1813 h->cur_pic_ptr->recovered |= !!(h->frame_recovered & FRAME_RECOVERED_IDR); 1814#endif 1815 1816 /* Set the frame properties/side data. Only done for the second field in 1817 * field coded frames, since some SEI information is present for each field 1818 * and is merged by the SEI parsing code. */ 1819 if (!FIELD_PICTURE(h) || !h->first_field || h->missing_fields > 1) { 1820 ret = h264_export_frame_props(h); 1821 if (ret < 0) 1822 return ret; 1823 1824 ret = h264_select_output_frame(h); 1825 if (ret < 0) 1826 return ret; 1827 } 1828 1829 return 0; 1830} 1831 1832static int h264_slice_header_parse(const H264Context *h, H264SliceContext *sl, 1833 const H2645NAL *nal) 1834{ 1835 const SPS *sps; 1836 const PPS *pps; 1837 int ret; 1838 unsigned int slice_type, tmp, i; 1839 int field_pic_flag, bottom_field_flag; 1840 int first_slice = sl == h->slice_ctx && !h->current_slice; 1841 int picture_structure; 1842 1843 if (first_slice) 1844 av_assert0(!h->setup_finished); 1845 1846 sl->first_mb_addr = get_ue_golomb_long(&sl->gb); 1847 1848 slice_type = get_ue_golomb_31(&sl->gb); 1849 if (slice_type > 9) { 1850 av_log(h->avctx, AV_LOG_ERROR, 1851 "slice type %d too large at %d\n", 1852 slice_type, sl->first_mb_addr); 1853 return AVERROR_INVALIDDATA; 1854 } 1855 if (slice_type > 4) { 1856 slice_type -= 5; 1857 sl->slice_type_fixed = 1; 1858 } else 1859 sl->slice_type_fixed = 0; 1860 1861 slice_type = ff_h264_golomb_to_pict_type[slice_type]; 1862 sl->slice_type = slice_type; 1863 sl->slice_type_nos = slice_type & 3; 1864 1865 if (nal->type == H264_NAL_IDR_SLICE && 1866 sl->slice_type_nos != AV_PICTURE_TYPE_I) { 1867 av_log(h->avctx, AV_LOG_ERROR, "A non-intra slice in an IDR NAL unit.\n"); 1868 return AVERROR_INVALIDDATA; 1869 } 1870 1871 sl->pps_id = get_ue_golomb(&sl->gb); 1872 if (sl->pps_id >= MAX_PPS_COUNT) { 1873 av_log(h->avctx, AV_LOG_ERROR, "pps_id %u out of range\n", sl->pps_id); 1874 return AVERROR_INVALIDDATA; 1875 } 1876 if (!h->ps.pps_list[sl->pps_id]) { 1877 av_log(h->avctx, AV_LOG_ERROR, 1878 "non-existing PPS %u referenced\n", 1879 sl->pps_id); 1880 return AVERROR_INVALIDDATA; 1881 } 1882 pps = (const PPS*)h->ps.pps_list[sl->pps_id]->data; 1883 sps = pps->sps; 1884 1885 sl->frame_num = get_bits(&sl->gb, sps->log2_max_frame_num); 1886 if (!first_slice) { 1887 if (h->poc.frame_num != sl->frame_num) { 1888 av_log(h->avctx, AV_LOG_ERROR, "Frame num change from %d to %d\n", 1889 h->poc.frame_num, sl->frame_num); 1890 return AVERROR_INVALIDDATA; 1891 } 1892 } 1893 1894 sl->mb_mbaff = 0; 1895 1896 if (sps->frame_mbs_only_flag) { 1897 picture_structure = PICT_FRAME; 1898 } else { 1899 if (!sps->direct_8x8_inference_flag && slice_type == AV_PICTURE_TYPE_B) { 1900 av_log(h->avctx, AV_LOG_ERROR, "This stream was generated by a broken encoder, invalid 8x8 inference\n"); 1901 return -1; 1902 } 1903 field_pic_flag = get_bits1(&sl->gb); 1904 if (field_pic_flag) { 1905 bottom_field_flag = get_bits1(&sl->gb); 1906 picture_structure = PICT_TOP_FIELD + bottom_field_flag; 1907 } else { 1908 picture_structure = PICT_FRAME; 1909 } 1910 } 1911 sl->picture_structure = picture_structure; 1912 sl->mb_field_decoding_flag = picture_structure != PICT_FRAME; 1913 1914 if (picture_structure == PICT_FRAME) { 1915 sl->curr_pic_num = sl->frame_num; 1916 sl->max_pic_num = 1 << sps->log2_max_frame_num; 1917 } else { 1918 sl->curr_pic_num = 2 * sl->frame_num + 1; 1919 sl->max_pic_num = 1 << (sps->log2_max_frame_num + 1); 1920 } 1921 1922 if (nal->type == H264_NAL_IDR_SLICE) { 1923 unsigned idr_pic_id = get_ue_golomb_long(&sl->gb); 1924 if (idr_pic_id < 65536) { 1925 sl->idr_pic_id = idr_pic_id; 1926 } else 1927 av_log(h->avctx, AV_LOG_WARNING, "idr_pic_id is invalid\n"); 1928 } 1929 1930 sl->poc_lsb = 0; 1931 sl->delta_poc_bottom = 0; 1932 if (sps->poc_type == 0) { 1933 sl->poc_lsb = get_bits(&sl->gb, sps->log2_max_poc_lsb); 1934 1935 if (pps->pic_order_present == 1 && picture_structure == PICT_FRAME) 1936 sl->delta_poc_bottom = get_se_golomb(&sl->gb); 1937 } 1938 1939 sl->delta_poc[0] = sl->delta_poc[1] = 0; 1940 if (sps->poc_type == 1 && !sps->delta_pic_order_always_zero_flag) { 1941 sl->delta_poc[0] = get_se_golomb(&sl->gb); 1942 1943 if (pps->pic_order_present == 1 && picture_structure == PICT_FRAME) 1944 sl->delta_poc[1] = get_se_golomb(&sl->gb); 1945 } 1946 1947 sl->redundant_pic_count = 0; 1948 if (pps->redundant_pic_cnt_present) 1949 sl->redundant_pic_count = get_ue_golomb(&sl->gb); 1950 1951 if (sl->slice_type_nos == AV_PICTURE_TYPE_B) 1952 sl->direct_spatial_mv_pred = get_bits1(&sl->gb); 1953 1954 ret = ff_h264_parse_ref_count(&sl->list_count, sl->ref_count, 1955 &sl->gb, pps, sl->slice_type_nos, 1956 picture_structure, h->avctx); 1957 if (ret < 0) 1958 return ret; 1959 1960 if (sl->slice_type_nos != AV_PICTURE_TYPE_I) { 1961 ret = ff_h264_decode_ref_pic_list_reordering(sl, h->avctx); 1962 if (ret < 0) { 1963 sl->ref_count[1] = sl->ref_count[0] = 0; 1964 return ret; 1965 } 1966 } 1967 1968 sl->pwt.use_weight = 0; 1969 for (i = 0; i < 2; i++) { 1970 sl->pwt.luma_weight_flag[i] = 0; 1971 sl->pwt.chroma_weight_flag[i] = 0; 1972 } 1973 if ((pps->weighted_pred && sl->slice_type_nos == AV_PICTURE_TYPE_P) || 1974 (pps->weighted_bipred_idc == 1 && 1975 sl->slice_type_nos == AV_PICTURE_TYPE_B)) { 1976 ret = ff_h264_pred_weight_table(&sl->gb, sps, sl->ref_count, 1977 sl->slice_type_nos, &sl->pwt, 1978 picture_structure, h->avctx); 1979 if (ret < 0) 1980 return ret; 1981 } 1982 1983 sl->explicit_ref_marking = 0; 1984 if (nal->ref_idc) { 1985 ret = ff_h264_decode_ref_pic_marking(sl, &sl->gb, nal, h->avctx); 1986 if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE)) 1987 return AVERROR_INVALIDDATA; 1988 } 1989 1990 if (sl->slice_type_nos != AV_PICTURE_TYPE_I && pps->cabac) { 1991 tmp = get_ue_golomb_31(&sl->gb); 1992 if (tmp > 2) { 1993 av_log(h->avctx, AV_LOG_ERROR, "cabac_init_idc %u overflow\n", tmp); 1994 return AVERROR_INVALIDDATA; 1995 } 1996 sl->cabac_init_idc = tmp; 1997 } 1998 1999 sl->last_qscale_diff = 0; 2000 tmp = pps->init_qp + (unsigned)get_se_golomb(&sl->gb); 2001 if (tmp > 51 + 6 * (sps->bit_depth_luma - 8)) { 2002 av_log(h->avctx, AV_LOG_ERROR, "QP %u out of range\n", tmp); 2003 return AVERROR_INVALIDDATA; 2004 } 2005 sl->qscale = tmp; 2006 sl->chroma_qp[0] = get_chroma_qp(pps, 0, sl->qscale); 2007 sl->chroma_qp[1] = get_chroma_qp(pps, 1, sl->qscale); 2008 // FIXME qscale / qp ... stuff 2009 if (sl->slice_type == AV_PICTURE_TYPE_SP) 2010 get_bits1(&sl->gb); /* sp_for_switch_flag */ 2011 if (sl->slice_type == AV_PICTURE_TYPE_SP || 2012 sl->slice_type == AV_PICTURE_TYPE_SI) 2013 get_se_golomb(&sl->gb); /* slice_qs_delta */ 2014 2015 sl->deblocking_filter = 1; 2016 sl->slice_alpha_c0_offset = 0; 2017 sl->slice_beta_offset = 0; 2018 if (pps->deblocking_filter_parameters_present) { 2019 tmp = get_ue_golomb_31(&sl->gb); 2020 if (tmp > 2) { 2021 av_log(h->avctx, AV_LOG_ERROR, 2022 "deblocking_filter_idc %u out of range\n", tmp); 2023 return AVERROR_INVALIDDATA; 2024 } 2025 sl->deblocking_filter = tmp; 2026 if (sl->deblocking_filter < 2) 2027 sl->deblocking_filter ^= 1; // 1<->0 2028 2029 if (sl->deblocking_filter) { 2030 int slice_alpha_c0_offset_div2 = get_se_golomb(&sl->gb); 2031 int slice_beta_offset_div2 = get_se_golomb(&sl->gb); 2032 if (slice_alpha_c0_offset_div2 > 6 || 2033 slice_alpha_c0_offset_div2 < -6 || 2034 slice_beta_offset_div2 > 6 || 2035 slice_beta_offset_div2 < -6) { 2036 av_log(h->avctx, AV_LOG_ERROR, 2037 "deblocking filter parameters %d %d out of range\n", 2038 slice_alpha_c0_offset_div2, slice_beta_offset_div2); 2039 return AVERROR_INVALIDDATA; 2040 } 2041 sl->slice_alpha_c0_offset = slice_alpha_c0_offset_div2 * 2; 2042 sl->slice_beta_offset = slice_beta_offset_div2 * 2; 2043 } 2044 } 2045 2046 return 0; 2047} 2048 2049/* do all the per-slice initialization needed before we can start decoding the 2050 * actual MBs */ 2051static int h264_slice_init(H264Context *h, H264SliceContext *sl, 2052 const H2645NAL *nal) 2053{ 2054 int i, j, ret = 0; 2055 2056 if (h->picture_idr && nal->type != H264_NAL_IDR_SLICE) { 2057 av_log(h->avctx, AV_LOG_ERROR, "Invalid mix of IDR and non-IDR slices\n"); 2058 return AVERROR_INVALIDDATA; 2059 } 2060 2061 av_assert1(h->mb_num == h->mb_width * h->mb_height); 2062 if (sl->first_mb_addr << FIELD_OR_MBAFF_PICTURE(h) >= h->mb_num || 2063 sl->first_mb_addr >= h->mb_num) { 2064 av_log(h->avctx, AV_LOG_ERROR, "first_mb_in_slice overflow\n"); 2065 return AVERROR_INVALIDDATA; 2066 } 2067 sl->resync_mb_x = sl->mb_x = sl->first_mb_addr % h->mb_width; 2068 sl->resync_mb_y = sl->mb_y = (sl->first_mb_addr / h->mb_width) << 2069 FIELD_OR_MBAFF_PICTURE(h); 2070 if (h->picture_structure == PICT_BOTTOM_FIELD) 2071 sl->resync_mb_y = sl->mb_y = sl->mb_y + 1; 2072 av_assert1(sl->mb_y < h->mb_height); 2073 2074 ret = ff_h264_build_ref_list(h, sl); 2075 if (ret < 0) 2076 return ret; 2077 2078 if (h->ps.pps->weighted_bipred_idc == 2 && 2079 sl->slice_type_nos == AV_PICTURE_TYPE_B) { 2080 implicit_weight_table(h, sl, -1); 2081 if (FRAME_MBAFF(h)) { 2082 implicit_weight_table(h, sl, 0); 2083 implicit_weight_table(h, sl, 1); 2084 } 2085 } 2086 2087 if (sl->slice_type_nos == AV_PICTURE_TYPE_B && !sl->direct_spatial_mv_pred) 2088 ff_h264_direct_dist_scale_factor(h, sl); 2089 if (!h->setup_finished) 2090 ff_h264_direct_ref_list_init(h, sl); 2091 2092 if (h->avctx->skip_loop_filter >= AVDISCARD_ALL || 2093 (h->avctx->skip_loop_filter >= AVDISCARD_NONKEY && 2094 h->nal_unit_type != H264_NAL_IDR_SLICE) || 2095 (h->avctx->skip_loop_filter >= AVDISCARD_NONINTRA && 2096 sl->slice_type_nos != AV_PICTURE_TYPE_I) || 2097 (h->avctx->skip_loop_filter >= AVDISCARD_BIDIR && 2098 sl->slice_type_nos == AV_PICTURE_TYPE_B) || 2099 (h->avctx->skip_loop_filter >= AVDISCARD_NONREF && 2100 nal->ref_idc == 0)) 2101 sl->deblocking_filter = 0; 2102 2103 if (sl->deblocking_filter == 1 && h->nb_slice_ctx > 1) { 2104 if (h->avctx->flags2 & AV_CODEC_FLAG2_FAST) { 2105 /* Cheat slightly for speed: 2106 * Do not bother to deblock across slices. */ 2107 sl->deblocking_filter = 2; 2108 } else { 2109 h->postpone_filter = 1; 2110 } 2111 } 2112 sl->qp_thresh = 15 - 2113 FFMIN(sl->slice_alpha_c0_offset, sl->slice_beta_offset) - 2114 FFMAX3(0, 2115 h->ps.pps->chroma_qp_index_offset[0], 2116 h->ps.pps->chroma_qp_index_offset[1]) + 2117 6 * (h->ps.sps->bit_depth_luma - 8); 2118 2119 sl->slice_num = ++h->current_slice; 2120 2121 if (sl->slice_num) 2122 h->slice_row[(sl->slice_num-1)&(MAX_SLICES-1)]= sl->resync_mb_y; 2123 if ( h->slice_row[sl->slice_num&(MAX_SLICES-1)] + 3 >= sl->resync_mb_y 2124 && h->slice_row[sl->slice_num&(MAX_SLICES-1)] <= sl->resync_mb_y 2125 && sl->slice_num >= MAX_SLICES) { 2126 //in case of ASO this check needs to be updated depending on how we decide to assign slice numbers in this case 2127 av_log(h->avctx, AV_LOG_WARNING, "Possibly too many slices (%d >= %d), increase MAX_SLICES and recompile if there are artifacts\n", sl->slice_num, MAX_SLICES); 2128 } 2129 2130 for (j = 0; j < 2; j++) { 2131 int id_list[16]; 2132 int *ref2frm = h->ref2frm[sl->slice_num & (MAX_SLICES - 1)][j]; 2133 for (i = 0; i < 16; i++) { 2134 id_list[i] = 60; 2135 if (j < sl->list_count && i < sl->ref_count[j] && 2136 sl->ref_list[j][i].parent->f->buf[0]) { 2137 int k; 2138 AVBuffer *buf = sl->ref_list[j][i].parent->f->buf[0]->buffer; 2139 for (k = 0; k < h->short_ref_count; k++) 2140 if (h->short_ref[k]->f->buf[0]->buffer == buf) { 2141 id_list[i] = k; 2142 break; 2143 } 2144 for (k = 0; k < h->long_ref_count; k++) 2145 if (h->long_ref[k] && h->long_ref[k]->f->buf[0]->buffer == buf) { 2146 id_list[i] = h->short_ref_count + k; 2147 break; 2148 } 2149 } 2150 } 2151 2152 ref2frm[0] = 2153 ref2frm[1] = -1; 2154 for (i = 0; i < 16; i++) 2155 ref2frm[i + 2] = 4 * id_list[i] + (sl->ref_list[j][i].reference & 3); 2156 ref2frm[18 + 0] = 2157 ref2frm[18 + 1] = -1; 2158 for (i = 16; i < 48; i++) 2159 ref2frm[i + 4] = 4 * id_list[(i - 16) >> 1] + 2160 (sl->ref_list[j][i].reference & 3); 2161 } 2162 2163 if (h->avctx->debug & FF_DEBUG_PICT_INFO) { 2164 av_log(h->avctx, AV_LOG_DEBUG, 2165 "slice:%d %c mb:%d %c%s%s frame:%d poc:%d/%d ref:%d/%d qp:%d loop:%d:%d:%d weight:%d%s %s\n", 2166 sl->slice_num, 2167 (h->picture_structure == PICT_FRAME ? 'F' : h->picture_structure == PICT_TOP_FIELD ? 'T' : 'B'), 2168 sl->mb_y * h->mb_width + sl->mb_x, 2169 av_get_picture_type_char(sl->slice_type), 2170 sl->slice_type_fixed ? " fix" : "", 2171 nal->type == H264_NAL_IDR_SLICE ? " IDR" : "", 2172 h->poc.frame_num, 2173 h->cur_pic_ptr->field_poc[0], 2174 h->cur_pic_ptr->field_poc[1], 2175 sl->ref_count[0], sl->ref_count[1], 2176 sl->qscale, 2177 sl->deblocking_filter, 2178 sl->slice_alpha_c0_offset, sl->slice_beta_offset, 2179 sl->pwt.use_weight, 2180 sl->pwt.use_weight == 1 && sl->pwt.use_weight_chroma ? "c" : "", 2181 sl->slice_type == AV_PICTURE_TYPE_B ? (sl->direct_spatial_mv_pred ? "SPAT" : "TEMP") : ""); 2182 } 2183 2184 return 0; 2185} 2186 2187int ff_h264_queue_decode_slice(H264Context *h, const H2645NAL *nal) 2188{ 2189 H264SliceContext *sl = h->slice_ctx + h->nb_slice_ctx_queued; 2190 int first_slice = sl == h->slice_ctx && !h->current_slice; 2191 int ret; 2192 2193 sl->gb = nal->gb; 2194 2195 ret = h264_slice_header_parse(h, sl, nal); 2196 if (ret < 0) 2197 return ret; 2198 2199 // discard redundant pictures 2200 if (sl->redundant_pic_count > 0) { 2201 sl->ref_count[0] = sl->ref_count[1] = 0; 2202 return 0; 2203 } 2204 2205 if (sl->first_mb_addr == 0 || !h->current_slice) { 2206 if (h->setup_finished) { 2207 av_log(h->avctx, AV_LOG_ERROR, "Too many fields\n"); 2208 return AVERROR_INVALIDDATA; 2209 } 2210 } 2211 2212 if (sl->first_mb_addr == 0) { // FIXME better field boundary detection 2213 if (h->current_slice) { 2214 // this slice starts a new field 2215 // first decode any pending queued slices 2216 if (h->nb_slice_ctx_queued) { 2217 H264SliceContext tmp_ctx; 2218 2219 ret = ff_h264_execute_decode_slices(h); 2220 if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE)) 2221 return ret; 2222 2223 memcpy(&tmp_ctx, h->slice_ctx, sizeof(tmp_ctx)); 2224 memcpy(h->slice_ctx, sl, sizeof(tmp_ctx)); 2225 memcpy(sl, &tmp_ctx, sizeof(tmp_ctx)); 2226 sl = h->slice_ctx; 2227 } 2228 2229 if (h->cur_pic_ptr && FIELD_PICTURE(h) && h->first_field) { 2230 ret = ff_h264_field_end(h, h->slice_ctx, 1); 2231 if (ret < 0) 2232 return ret; 2233 } else if (h->cur_pic_ptr && !FIELD_PICTURE(h) && !h->first_field && h->nal_unit_type == H264_NAL_IDR_SLICE) { 2234 av_log(h, AV_LOG_WARNING, "Broken frame packetizing\n"); 2235 ret = ff_h264_field_end(h, h->slice_ctx, 1); 2236 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX, 0); 2237 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX, 1); 2238 h->cur_pic_ptr = NULL; 2239 if (ret < 0) 2240 return ret; 2241 } else 2242 return AVERROR_INVALIDDATA; 2243 } 2244 2245 if (!h->first_field) { 2246 if (h->cur_pic_ptr && !h->droppable) { 2247 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX, 2248 h->picture_structure == PICT_BOTTOM_FIELD); 2249 } 2250 h->cur_pic_ptr = NULL; 2251 } 2252 } 2253 2254 if (!h->current_slice) 2255 av_assert0(sl == h->slice_ctx); 2256 2257 if (h->current_slice == 0 && !h->first_field) { 2258 if ( 2259 (h->avctx->skip_frame >= AVDISCARD_NONREF && !h->nal_ref_idc) || 2260 (h->avctx->skip_frame >= AVDISCARD_BIDIR && sl->slice_type_nos == AV_PICTURE_TYPE_B) || 2261 (h->avctx->skip_frame >= AVDISCARD_NONINTRA && sl->slice_type_nos != AV_PICTURE_TYPE_I) || 2262 (h->avctx->skip_frame >= AVDISCARD_NONKEY && h->nal_unit_type != H264_NAL_IDR_SLICE && h->sei.recovery_point.recovery_frame_cnt < 0) || 2263 h->avctx->skip_frame >= AVDISCARD_ALL) { 2264 return 0; 2265 } 2266 } 2267 2268 if (!first_slice) { 2269 const PPS *pps = (const PPS*)h->ps.pps_list[sl->pps_id]->data; 2270 2271 if (h->ps.pps->sps_id != pps->sps_id || 2272 h->ps.pps->transform_8x8_mode != pps->transform_8x8_mode /*|| 2273 (h->setup_finished && h->ps.pps != pps)*/) { 2274 av_log(h->avctx, AV_LOG_ERROR, "PPS changed between slices\n"); 2275 return AVERROR_INVALIDDATA; 2276 } 2277 if (h->ps.sps != pps->sps) { 2278 av_log(h->avctx, AV_LOG_ERROR, 2279 "SPS changed in the middle of the frame\n"); 2280 return AVERROR_INVALIDDATA; 2281 } 2282 } 2283 2284 if (h->current_slice == 0) { 2285 ret = h264_field_start(h, sl, nal, first_slice); 2286 if (ret < 0) 2287 return ret; 2288 } else { 2289 if (h->picture_structure != sl->picture_structure || 2290 h->droppable != (nal->ref_idc == 0)) { 2291 av_log(h->avctx, AV_LOG_ERROR, 2292 "Changing field mode (%d -> %d) between slices is not allowed\n", 2293 h->picture_structure, sl->picture_structure); 2294 return AVERROR_INVALIDDATA; 2295 } else if (!h->cur_pic_ptr) { 2296 av_log(h->avctx, AV_LOG_ERROR, 2297 "unset cur_pic_ptr on slice %d\n", 2298 h->current_slice + 1); 2299 return AVERROR_INVALIDDATA; 2300 } 2301 } 2302 2303 ret = h264_slice_init(h, sl, nal); 2304 if (ret < 0) 2305 return ret; 2306 2307 h->nb_slice_ctx_queued++; 2308 2309 return 0; 2310} 2311 2312int ff_h264_get_slice_type(const H264SliceContext *sl) 2313{ 2314 switch (sl->slice_type) { 2315 case AV_PICTURE_TYPE_P: 2316 return 0; 2317 case AV_PICTURE_TYPE_B: 2318 return 1; 2319 case AV_PICTURE_TYPE_I: 2320 return 2; 2321 case AV_PICTURE_TYPE_SP: 2322 return 3; 2323 case AV_PICTURE_TYPE_SI: 2324 return 4; 2325 default: 2326 return AVERROR_INVALIDDATA; 2327 } 2328} 2329 2330static av_always_inline void fill_filter_caches_inter(const H264Context *h, 2331 H264SliceContext *sl, 2332 int mb_type, int top_xy, 2333 int left_xy[LEFT_MBS], 2334 int top_type, 2335 int left_type[LEFT_MBS], 2336 int mb_xy, int list) 2337{ 2338 int b_stride = h->b_stride; 2339 int16_t(*mv_dst)[2] = &sl->mv_cache[list][scan8[0]]; 2340 int8_t *ref_cache = &sl->ref_cache[list][scan8[0]]; 2341 if (IS_INTER(mb_type) || IS_DIRECT(mb_type)) { 2342 if (USES_LIST(top_type, list)) { 2343 const int b_xy = h->mb2b_xy[top_xy] + 3 * b_stride; 2344 const int b8_xy = 4 * top_xy + 2; 2345 const int *ref2frm = &h->ref2frm[h->slice_table[top_xy] & (MAX_SLICES - 1)][list][(MB_MBAFF(sl) ? 20 : 2)]; 2346 AV_COPY128(mv_dst - 1 * 8, h->cur_pic.motion_val[list][b_xy + 0]); 2347 ref_cache[0 - 1 * 8] = 2348 ref_cache[1 - 1 * 8] = ref2frm[h->cur_pic.ref_index[list][b8_xy + 0]]; 2349 ref_cache[2 - 1 * 8] = 2350 ref_cache[3 - 1 * 8] = ref2frm[h->cur_pic.ref_index[list][b8_xy + 1]]; 2351 } else { 2352 AV_ZERO128(mv_dst - 1 * 8); 2353 AV_WN32A(&ref_cache[0 - 1 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u); 2354 } 2355 2356 if (!IS_INTERLACED(mb_type ^ left_type[LTOP])) { 2357 if (USES_LIST(left_type[LTOP], list)) { 2358 const int b_xy = h->mb2b_xy[left_xy[LTOP]] + 3; 2359 const int b8_xy = 4 * left_xy[LTOP] + 1; 2360 const int *ref2frm = &h->ref2frm[h->slice_table[left_xy[LTOP]] & (MAX_SLICES - 1)][list][(MB_MBAFF(sl) ? 20 : 2)]; 2361 AV_COPY32(mv_dst - 1 + 0, h->cur_pic.motion_val[list][b_xy + b_stride * 0]); 2362 AV_COPY32(mv_dst - 1 + 8, h->cur_pic.motion_val[list][b_xy + b_stride * 1]); 2363 AV_COPY32(mv_dst - 1 + 16, h->cur_pic.motion_val[list][b_xy + b_stride * 2]); 2364 AV_COPY32(mv_dst - 1 + 24, h->cur_pic.motion_val[list][b_xy + b_stride * 3]); 2365 ref_cache[-1 + 0] = 2366 ref_cache[-1 + 8] = ref2frm[h->cur_pic.ref_index[list][b8_xy + 2 * 0]]; 2367 ref_cache[-1 + 16] = 2368 ref_cache[-1 + 24] = ref2frm[h->cur_pic.ref_index[list][b8_xy + 2 * 1]]; 2369 } else { 2370 AV_ZERO32(mv_dst - 1 + 0); 2371 AV_ZERO32(mv_dst - 1 + 8); 2372 AV_ZERO32(mv_dst - 1 + 16); 2373 AV_ZERO32(mv_dst - 1 + 24); 2374 ref_cache[-1 + 0] = 2375 ref_cache[-1 + 8] = 2376 ref_cache[-1 + 16] = 2377 ref_cache[-1 + 24] = LIST_NOT_USED; 2378 } 2379 } 2380 } 2381 2382 if (!USES_LIST(mb_type, list)) { 2383 fill_rectangle(mv_dst, 4, 4, 8, pack16to32(0, 0), 4); 2384 AV_WN32A(&ref_cache[0 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u); 2385 AV_WN32A(&ref_cache[1 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u); 2386 AV_WN32A(&ref_cache[2 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u); 2387 AV_WN32A(&ref_cache[3 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u); 2388 return; 2389 } 2390 2391 { 2392 int8_t *ref = &h->cur_pic.ref_index[list][4 * mb_xy]; 2393 const int *ref2frm = &h->ref2frm[sl->slice_num & (MAX_SLICES - 1)][list][(MB_MBAFF(sl) ? 20 : 2)]; 2394 uint32_t ref01 = (pack16to32(ref2frm[ref[0]], ref2frm[ref[1]]) & 0x00FF00FF) * 0x0101; 2395 uint32_t ref23 = (pack16to32(ref2frm[ref[2]], ref2frm[ref[3]]) & 0x00FF00FF) * 0x0101; 2396 AV_WN32A(&ref_cache[0 * 8], ref01); 2397 AV_WN32A(&ref_cache[1 * 8], ref01); 2398 AV_WN32A(&ref_cache[2 * 8], ref23); 2399 AV_WN32A(&ref_cache[3 * 8], ref23); 2400 } 2401 2402 { 2403 int16_t(*mv_src)[2] = &h->cur_pic.motion_val[list][4 * sl->mb_x + 4 * sl->mb_y * b_stride]; 2404 AV_COPY128(mv_dst + 8 * 0, mv_src + 0 * b_stride); 2405 AV_COPY128(mv_dst + 8 * 1, mv_src + 1 * b_stride); 2406 AV_COPY128(mv_dst + 8 * 2, mv_src + 2 * b_stride); 2407 AV_COPY128(mv_dst + 8 * 3, mv_src + 3 * b_stride); 2408 } 2409} 2410 2411/** 2412 * @return non zero if the loop filter can be skipped 2413 */ 2414static int fill_filter_caches(const H264Context *h, H264SliceContext *sl, int mb_type) 2415{ 2416 const int mb_xy = sl->mb_xy; 2417 int top_xy, left_xy[LEFT_MBS]; 2418 int top_type, left_type[LEFT_MBS]; 2419 uint8_t *nnz; 2420 uint8_t *nnz_cache; 2421 2422 top_xy = mb_xy - (h->mb_stride << MB_FIELD(sl)); 2423 2424 left_xy[LBOT] = left_xy[LTOP] = mb_xy - 1; 2425 if (FRAME_MBAFF(h)) { 2426 const int left_mb_field_flag = IS_INTERLACED(h->cur_pic.mb_type[mb_xy - 1]); 2427 const int curr_mb_field_flag = IS_INTERLACED(mb_type); 2428 if (sl->mb_y & 1) { 2429 if (left_mb_field_flag != curr_mb_field_flag) 2430 left_xy[LTOP] -= h->mb_stride; 2431 } else { 2432 if (curr_mb_field_flag) 2433 top_xy += h->mb_stride & 2434 (((h->cur_pic.mb_type[top_xy] >> 7) & 1) - 1); 2435 if (left_mb_field_flag != curr_mb_field_flag) 2436 left_xy[LBOT] += h->mb_stride; 2437 } 2438 } 2439 2440 sl->top_mb_xy = top_xy; 2441 sl->left_mb_xy[LTOP] = left_xy[LTOP]; 2442 sl->left_mb_xy[LBOT] = left_xy[LBOT]; 2443 { 2444 /* For sufficiently low qp, filtering wouldn't do anything. 2445 * This is a conservative estimate: could also check beta_offset 2446 * and more accurate chroma_qp. */ 2447 int qp_thresh = sl->qp_thresh; // FIXME strictly we should store qp_thresh for each mb of a slice 2448 int qp = h->cur_pic.qscale_table[mb_xy]; 2449 if (qp <= qp_thresh && 2450 (left_xy[LTOP] < 0 || 2451 ((qp + h->cur_pic.qscale_table[left_xy[LTOP]] + 1) >> 1) <= qp_thresh) && 2452 (top_xy < 0 || 2453 ((qp + h->cur_pic.qscale_table[top_xy] + 1) >> 1) <= qp_thresh)) { 2454 if (!FRAME_MBAFF(h)) 2455 return 1; 2456 if ((left_xy[LTOP] < 0 || 2457 ((qp + h->cur_pic.qscale_table[left_xy[LBOT]] + 1) >> 1) <= qp_thresh) && 2458 (top_xy < h->mb_stride || 2459 ((qp + h->cur_pic.qscale_table[top_xy - h->mb_stride] + 1) >> 1) <= qp_thresh)) 2460 return 1; 2461 } 2462 } 2463 2464 top_type = h->cur_pic.mb_type[top_xy]; 2465 left_type[LTOP] = h->cur_pic.mb_type[left_xy[LTOP]]; 2466 left_type[LBOT] = h->cur_pic.mb_type[left_xy[LBOT]]; 2467 if (sl->deblocking_filter == 2) { 2468 if (h->slice_table[top_xy] != sl->slice_num) 2469 top_type = 0; 2470 if (h->slice_table[left_xy[LBOT]] != sl->slice_num) 2471 left_type[LTOP] = left_type[LBOT] = 0; 2472 } else { 2473 if (h->slice_table[top_xy] == 0xFFFF) 2474 top_type = 0; 2475 if (h->slice_table[left_xy[LBOT]] == 0xFFFF) 2476 left_type[LTOP] = left_type[LBOT] = 0; 2477 } 2478 sl->top_type = top_type; 2479 sl->left_type[LTOP] = left_type[LTOP]; 2480 sl->left_type[LBOT] = left_type[LBOT]; 2481 2482 if (IS_INTRA(mb_type)) 2483 return 0; 2484 2485 fill_filter_caches_inter(h, sl, mb_type, top_xy, left_xy, 2486 top_type, left_type, mb_xy, 0); 2487 if (sl->list_count == 2) 2488 fill_filter_caches_inter(h, sl, mb_type, top_xy, left_xy, 2489 top_type, left_type, mb_xy, 1); 2490 2491 nnz = h->non_zero_count[mb_xy]; 2492 nnz_cache = sl->non_zero_count_cache; 2493 AV_COPY32(&nnz_cache[4 + 8 * 1], &nnz[0]); 2494 AV_COPY32(&nnz_cache[4 + 8 * 2], &nnz[4]); 2495 AV_COPY32(&nnz_cache[4 + 8 * 3], &nnz[8]); 2496 AV_COPY32(&nnz_cache[4 + 8 * 4], &nnz[12]); 2497 sl->cbp = h->cbp_table[mb_xy]; 2498 2499 if (top_type) { 2500 nnz = h->non_zero_count[top_xy]; 2501 AV_COPY32(&nnz_cache[4 + 8 * 0], &nnz[3 * 4]); 2502 } 2503 2504 if (left_type[LTOP]) { 2505 nnz = h->non_zero_count[left_xy[LTOP]]; 2506 nnz_cache[3 + 8 * 1] = nnz[3 + 0 * 4]; 2507 nnz_cache[3 + 8 * 2] = nnz[3 + 1 * 4]; 2508 nnz_cache[3 + 8 * 3] = nnz[3 + 2 * 4]; 2509 nnz_cache[3 + 8 * 4] = nnz[3 + 3 * 4]; 2510 } 2511 2512 /* CAVLC 8x8dct requires NNZ values for residual decoding that differ 2513 * from what the loop filter needs */ 2514 if (!CABAC(h) && h->ps.pps->transform_8x8_mode) { 2515 if (IS_8x8DCT(top_type)) { 2516 nnz_cache[4 + 8 * 0] = 2517 nnz_cache[5 + 8 * 0] = (h->cbp_table[top_xy] & 0x4000) >> 12; 2518 nnz_cache[6 + 8 * 0] = 2519 nnz_cache[7 + 8 * 0] = (h->cbp_table[top_xy] & 0x8000) >> 12; 2520 } 2521 if (IS_8x8DCT(left_type[LTOP])) { 2522 nnz_cache[3 + 8 * 1] = 2523 nnz_cache[3 + 8 * 2] = (h->cbp_table[left_xy[LTOP]] & 0x2000) >> 12; // FIXME check MBAFF 2524 } 2525 if (IS_8x8DCT(left_type[LBOT])) { 2526 nnz_cache[3 + 8 * 3] = 2527 nnz_cache[3 + 8 * 4] = (h->cbp_table[left_xy[LBOT]] & 0x8000) >> 12; // FIXME check MBAFF 2528 } 2529 2530 if (IS_8x8DCT(mb_type)) { 2531 nnz_cache[scan8[0]] = 2532 nnz_cache[scan8[1]] = 2533 nnz_cache[scan8[2]] = 2534 nnz_cache[scan8[3]] = (sl->cbp & 0x1000) >> 12; 2535 2536 nnz_cache[scan8[0 + 4]] = 2537 nnz_cache[scan8[1 + 4]] = 2538 nnz_cache[scan8[2 + 4]] = 2539 nnz_cache[scan8[3 + 4]] = (sl->cbp & 0x2000) >> 12; 2540 2541 nnz_cache[scan8[0 + 8]] = 2542 nnz_cache[scan8[1 + 8]] = 2543 nnz_cache[scan8[2 + 8]] = 2544 nnz_cache[scan8[3 + 8]] = (sl->cbp & 0x4000) >> 12; 2545 2546 nnz_cache[scan8[0 + 12]] = 2547 nnz_cache[scan8[1 + 12]] = 2548 nnz_cache[scan8[2 + 12]] = 2549 nnz_cache[scan8[3 + 12]] = (sl->cbp & 0x8000) >> 12; 2550 } 2551 } 2552 2553 return 0; 2554} 2555 2556static void loop_filter(const H264Context *h, H264SliceContext *sl, int start_x, int end_x) 2557{ 2558 uint8_t *dest_y, *dest_cb, *dest_cr; 2559 int linesize, uvlinesize, mb_x, mb_y; 2560 const int end_mb_y = sl->mb_y + FRAME_MBAFF(h); 2561 const int old_slice_type = sl->slice_type; 2562 const int pixel_shift = h->pixel_shift; 2563 const int block_h = 16 >> h->chroma_y_shift; 2564 2565 if (h->postpone_filter) 2566 return; 2567 2568 if (sl->deblocking_filter) { 2569 for (mb_x = start_x; mb_x < end_x; mb_x++) 2570 for (mb_y = end_mb_y - FRAME_MBAFF(h); mb_y <= end_mb_y; mb_y++) { 2571 int mb_xy, mb_type; 2572 mb_xy = sl->mb_xy = mb_x + mb_y * h->mb_stride; 2573 mb_type = h->cur_pic.mb_type[mb_xy]; 2574 2575 if (FRAME_MBAFF(h)) 2576 sl->mb_mbaff = 2577 sl->mb_field_decoding_flag = !!IS_INTERLACED(mb_type); 2578 2579 sl->mb_x = mb_x; 2580 sl->mb_y = mb_y; 2581 dest_y = h->cur_pic.f->data[0] + 2582 ((mb_x << pixel_shift) + mb_y * sl->linesize) * 16; 2583 dest_cb = h->cur_pic.f->data[1] + 2584 (mb_x << pixel_shift) * (8 << CHROMA444(h)) + 2585 mb_y * sl->uvlinesize * block_h; 2586 dest_cr = h->cur_pic.f->data[2] + 2587 (mb_x << pixel_shift) * (8 << CHROMA444(h)) + 2588 mb_y * sl->uvlinesize * block_h; 2589 // FIXME simplify above 2590 2591 if (MB_FIELD(sl)) { 2592 linesize = sl->mb_linesize = sl->linesize * 2; 2593 uvlinesize = sl->mb_uvlinesize = sl->uvlinesize * 2; 2594 if (mb_y & 1) { // FIXME move out of this function? 2595 dest_y -= sl->linesize * 15; 2596 dest_cb -= sl->uvlinesize * (block_h - 1); 2597 dest_cr -= sl->uvlinesize * (block_h - 1); 2598 } 2599 } else { 2600 linesize = sl->mb_linesize = sl->linesize; 2601 uvlinesize = sl->mb_uvlinesize = sl->uvlinesize; 2602 } 2603 backup_mb_border(h, sl, dest_y, dest_cb, dest_cr, linesize, 2604 uvlinesize, 0); 2605 if (fill_filter_caches(h, sl, mb_type)) 2606 continue; 2607 sl->chroma_qp[0] = get_chroma_qp(h->ps.pps, 0, h->cur_pic.qscale_table[mb_xy]); 2608 sl->chroma_qp[1] = get_chroma_qp(h->ps.pps, 1, h->cur_pic.qscale_table[mb_xy]); 2609 2610 if (FRAME_MBAFF(h)) { 2611 ff_h264_filter_mb(h, sl, mb_x, mb_y, dest_y, dest_cb, dest_cr, 2612 linesize, uvlinesize); 2613 } else { 2614 ff_h264_filter_mb_fast(h, sl, mb_x, mb_y, dest_y, dest_cb, 2615 dest_cr, linesize, uvlinesize); 2616 } 2617 } 2618 } 2619 sl->slice_type = old_slice_type; 2620 sl->mb_x = end_x; 2621 sl->mb_y = end_mb_y - FRAME_MBAFF(h); 2622 sl->chroma_qp[0] = get_chroma_qp(h->ps.pps, 0, sl->qscale); 2623 sl->chroma_qp[1] = get_chroma_qp(h->ps.pps, 1, sl->qscale); 2624} 2625 2626static void predict_field_decoding_flag(const H264Context *h, H264SliceContext *sl) 2627{ 2628 const int mb_xy = sl->mb_x + sl->mb_y * h->mb_stride; 2629 int mb_type = (h->slice_table[mb_xy - 1] == sl->slice_num) ? 2630 h->cur_pic.mb_type[mb_xy - 1] : 2631 (h->slice_table[mb_xy - h->mb_stride] == sl->slice_num) ? 2632 h->cur_pic.mb_type[mb_xy - h->mb_stride] : 0; 2633 sl->mb_mbaff = sl->mb_field_decoding_flag = IS_INTERLACED(mb_type) ? 1 : 0; 2634} 2635 2636/** 2637 * Draw edges and report progress for the last MB row. 2638 */ 2639static void decode_finish_row(const H264Context *h, H264SliceContext *sl) 2640{ 2641 int top = 16 * (sl->mb_y >> FIELD_PICTURE(h)); 2642 int pic_height = 16 * h->mb_height >> FIELD_PICTURE(h); 2643 int height = 16 << FRAME_MBAFF(h); 2644 int deblock_border = (16 + 4) << FRAME_MBAFF(h); 2645 2646 if (sl->deblocking_filter) { 2647 if ((top + height) >= pic_height) 2648 height += deblock_border; 2649 top -= deblock_border; 2650 } 2651 2652 if (top >= pic_height || (top + height) < 0) 2653 return; 2654 2655 height = FFMIN(height, pic_height - top); 2656 if (top < 0) { 2657 height = top + height; 2658 top = 0; 2659 } 2660 2661 ff_h264_draw_horiz_band(h, sl, top, height); 2662 2663 if (h->droppable || h->er.error_occurred) 2664 return; 2665 2666 ff_thread_report_progress(&h->cur_pic_ptr->tf, top + height - 1, 2667 h->picture_structure == PICT_BOTTOM_FIELD); 2668} 2669 2670static void er_add_slice(H264SliceContext *sl, 2671 int startx, int starty, 2672 int endx, int endy, int status) 2673{ 2674 if (!sl->h264->enable_er) 2675 return; 2676 2677 if (CONFIG_ERROR_RESILIENCE) { 2678 ff_er_add_slice(sl->er, startx, starty, endx, endy, status); 2679 } 2680} 2681 2682static int decode_slice(struct AVCodecContext *avctx, void *arg) 2683{ 2684 H264SliceContext *sl = arg; 2685 const H264Context *h = sl->h264; 2686 int lf_x_start = sl->mb_x; 2687 int orig_deblock = sl->deblocking_filter; 2688 int ret; 2689 2690 sl->linesize = h->cur_pic_ptr->f->linesize[0]; 2691 sl->uvlinesize = h->cur_pic_ptr->f->linesize[1]; 2692 2693 ret = alloc_scratch_buffers(sl, sl->linesize); 2694 if (ret < 0) 2695 return ret; 2696 2697 sl->mb_skip_run = -1; 2698 2699 av_assert0(h->block_offset[15] == (4 * ((scan8[15] - scan8[0]) & 7) << h->pixel_shift) + 4 * sl->linesize * ((scan8[15] - scan8[0]) >> 3)); 2700 2701 if (h->postpone_filter) 2702 sl->deblocking_filter = 0; 2703 2704 sl->is_complex = FRAME_MBAFF(h) || h->picture_structure != PICT_FRAME || 2705 (CONFIG_GRAY && (h->flags & AV_CODEC_FLAG_GRAY)); 2706 2707 if (!(h->avctx->active_thread_type & FF_THREAD_SLICE) && h->picture_structure == PICT_FRAME && sl->er->error_status_table) { 2708 const int start_i = av_clip(sl->resync_mb_x + sl->resync_mb_y * h->mb_width, 0, h->mb_num - 1); 2709 if (start_i) { 2710 int prev_status = sl->er->error_status_table[sl->er->mb_index2xy[start_i - 1]]; 2711 prev_status &= ~ VP_START; 2712 if (prev_status != (ER_MV_END | ER_DC_END | ER_AC_END)) 2713 sl->er->error_occurred = 1; 2714 } 2715 } 2716 2717 if (h->ps.pps->cabac) { 2718 /* realign */ 2719 align_get_bits(&sl->gb); 2720 2721 /* init cabac */ 2722 ret = ff_init_cabac_decoder(&sl->cabac, 2723 sl->gb.buffer + get_bits_count(&sl->gb) / 8, 2724 (get_bits_left(&sl->gb) + 7) / 8); 2725 if (ret < 0) 2726 return ret; 2727 2728 ff_h264_init_cabac_states(h, sl); 2729 2730 for (;;) { 2731 int ret, eos; 2732 if (sl->mb_x + sl->mb_y * h->mb_width >= sl->next_slice_idx) { 2733 av_log(h->avctx, AV_LOG_ERROR, "Slice overlaps with next at %d\n", 2734 sl->next_slice_idx); 2735 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x, 2736 sl->mb_y, ER_MB_ERROR); 2737 return AVERROR_INVALIDDATA; 2738 } 2739 2740 ret = ff_h264_decode_mb_cabac(h, sl); 2741 2742 if (ret >= 0) 2743 ff_h264_hl_decode_mb(h, sl); 2744 2745 // FIXME optimal? or let mb_decode decode 16x32 ? 2746 if (ret >= 0 && FRAME_MBAFF(h)) { 2747 sl->mb_y++; 2748 2749 ret = ff_h264_decode_mb_cabac(h, sl); 2750 2751 if (ret >= 0) 2752 ff_h264_hl_decode_mb(h, sl); 2753 sl->mb_y--; 2754 } 2755 eos = get_cabac_terminate(&sl->cabac); 2756 2757 if ((h->workaround_bugs & FF_BUG_TRUNCATED) && 2758 sl->cabac.bytestream > sl->cabac.bytestream_end + 2) { 2759 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x - 1, 2760 sl->mb_y, ER_MB_END); 2761 if (sl->mb_x >= lf_x_start) 2762 loop_filter(h, sl, lf_x_start, sl->mb_x + 1); 2763 goto finish; 2764 } 2765 if (sl->cabac.bytestream > sl->cabac.bytestream_end + 2 ) 2766 av_log(h->avctx, AV_LOG_DEBUG, "bytestream overread %"PTRDIFF_SPECIFIER"\n", sl->cabac.bytestream_end - sl->cabac.bytestream); 2767 if (ret < 0 || sl->cabac.bytestream > sl->cabac.bytestream_end + 4) { 2768 av_log(h->avctx, AV_LOG_ERROR, 2769 "error while decoding MB %d %d, bytestream %"PTRDIFF_SPECIFIER"\n", 2770 sl->mb_x, sl->mb_y, 2771 sl->cabac.bytestream_end - sl->cabac.bytestream); 2772 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x, 2773 sl->mb_y, ER_MB_ERROR); 2774 return AVERROR_INVALIDDATA; 2775 } 2776 2777 if (++sl->mb_x >= h->mb_width) { 2778 loop_filter(h, sl, lf_x_start, sl->mb_x); 2779 sl->mb_x = lf_x_start = 0; 2780 decode_finish_row(h, sl); 2781 ++sl->mb_y; 2782 if (FIELD_OR_MBAFF_PICTURE(h)) { 2783 ++sl->mb_y; 2784 if (FRAME_MBAFF(h) && sl->mb_y < h->mb_height) 2785 predict_field_decoding_flag(h, sl); 2786 } 2787 } 2788 2789 if (eos || sl->mb_y >= h->mb_height) { 2790 ff_tlog(h->avctx, "slice end %d %d\n", 2791 get_bits_count(&sl->gb), sl->gb.size_in_bits); 2792 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x - 1, 2793 sl->mb_y, ER_MB_END); 2794 if (sl->mb_x > lf_x_start) 2795 loop_filter(h, sl, lf_x_start, sl->mb_x); 2796 goto finish; 2797 } 2798 } 2799 } else { 2800 for (;;) { 2801 int ret; 2802 2803 if (sl->mb_x + sl->mb_y * h->mb_width >= sl->next_slice_idx) { 2804 av_log(h->avctx, AV_LOG_ERROR, "Slice overlaps with next at %d\n", 2805 sl->next_slice_idx); 2806 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x, 2807 sl->mb_y, ER_MB_ERROR); 2808 return AVERROR_INVALIDDATA; 2809 } 2810 2811 ret = ff_h264_decode_mb_cavlc(h, sl); 2812 2813 if (ret >= 0) 2814 ff_h264_hl_decode_mb(h, sl); 2815 2816 // FIXME optimal? or let mb_decode decode 16x32 ? 2817 if (ret >= 0 && FRAME_MBAFF(h)) { 2818 sl->mb_y++; 2819 ret = ff_h264_decode_mb_cavlc(h, sl); 2820 2821 if (ret >= 0) 2822 ff_h264_hl_decode_mb(h, sl); 2823 sl->mb_y--; 2824 } 2825 2826 if (ret < 0) { 2827 av_log(h->avctx, AV_LOG_ERROR, 2828 "error while decoding MB %d %d\n", sl->mb_x, sl->mb_y); 2829 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x, 2830 sl->mb_y, ER_MB_ERROR); 2831 return ret; 2832 } 2833 2834 if (++sl->mb_x >= h->mb_width) { 2835 loop_filter(h, sl, lf_x_start, sl->mb_x); 2836 sl->mb_x = lf_x_start = 0; 2837 decode_finish_row(h, sl); 2838 ++sl->mb_y; 2839 if (FIELD_OR_MBAFF_PICTURE(h)) { 2840 ++sl->mb_y; 2841 if (FRAME_MBAFF(h) && sl->mb_y < h->mb_height) 2842 predict_field_decoding_flag(h, sl); 2843 } 2844 if (sl->mb_y >= h->mb_height) { 2845 ff_tlog(h->avctx, "slice end %d %d\n", 2846 get_bits_count(&sl->gb), sl->gb.size_in_bits); 2847 2848 if ( get_bits_left(&sl->gb) == 0 2849 || get_bits_left(&sl->gb) > 0 && !(h->avctx->err_recognition & AV_EF_AGGRESSIVE)) { 2850 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, 2851 sl->mb_x - 1, sl->mb_y, ER_MB_END); 2852 2853 goto finish; 2854 } else { 2855 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, 2856 sl->mb_x, sl->mb_y, ER_MB_END); 2857 2858 return AVERROR_INVALIDDATA; 2859 } 2860 } 2861 } 2862 2863 if (get_bits_left(&sl->gb) <= 0 && sl->mb_skip_run <= 0) { 2864 ff_tlog(h->avctx, "slice end %d %d\n", 2865 get_bits_count(&sl->gb), sl->gb.size_in_bits); 2866 2867 if (get_bits_left(&sl->gb) == 0) { 2868 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, 2869 sl->mb_x - 1, sl->mb_y, ER_MB_END); 2870 if (sl->mb_x > lf_x_start) 2871 loop_filter(h, sl, lf_x_start, sl->mb_x); 2872 2873 goto finish; 2874 } else { 2875 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x, 2876 sl->mb_y, ER_MB_ERROR); 2877 2878 return AVERROR_INVALIDDATA; 2879 } 2880 } 2881 } 2882 } 2883 2884finish: 2885 sl->deblocking_filter = orig_deblock; 2886 return 0; 2887} 2888 2889/** 2890 * Call decode_slice() for each context. 2891 * 2892 * @param h h264 master context 2893 */ 2894int ff_h264_execute_decode_slices(H264Context *h) 2895{ 2896 AVCodecContext *const avctx = h->avctx; 2897 H264SliceContext *sl; 2898 int context_count = h->nb_slice_ctx_queued; 2899 int ret = 0; 2900 int i, j; 2901 2902 h->slice_ctx[0].next_slice_idx = INT_MAX; 2903 2904 if (h->avctx->hwaccel || context_count < 1) 2905 return 0; 2906 2907 av_assert0(context_count && h->slice_ctx[context_count - 1].mb_y < h->mb_height); 2908 2909 if (context_count == 1) { 2910 2911 h->slice_ctx[0].next_slice_idx = h->mb_width * h->mb_height; 2912 h->postpone_filter = 0; 2913 2914 ret = decode_slice(avctx, &h->slice_ctx[0]); 2915 h->mb_y = h->slice_ctx[0].mb_y; 2916 if (ret < 0) 2917 goto finish; 2918 } else { 2919 av_assert0(context_count > 0); 2920 for (i = 0; i < context_count; i++) { 2921 int next_slice_idx = h->mb_width * h->mb_height; 2922 int slice_idx; 2923 2924 sl = &h->slice_ctx[i]; 2925 2926 /* make sure none of those slices overlap */ 2927 slice_idx = sl->mb_y * h->mb_width + sl->mb_x; 2928 for (j = 0; j < context_count; j++) { 2929 H264SliceContext *sl2 = &h->slice_ctx[j]; 2930 int slice_idx2 = sl2->mb_y * h->mb_width + sl2->mb_x; 2931 2932 if (i == j || slice_idx2 < slice_idx) 2933 continue; 2934 next_slice_idx = FFMIN(next_slice_idx, slice_idx2); 2935 } 2936 sl->next_slice_idx = next_slice_idx; 2937 } 2938 2939 avctx->execute(avctx, decode_slice, h->slice_ctx, 2940 NULL, context_count, sizeof(h->slice_ctx[0])); 2941 2942 /* pull back stuff from slices to master context */ 2943 sl = &h->slice_ctx[context_count - 1]; 2944 h->mb_y = sl->mb_y; 2945 2946 if (h->postpone_filter) { 2947 h->postpone_filter = 0; 2948 2949 for (i = 0; i < context_count; i++) { 2950 int y_end, x_end; 2951 2952 sl = &h->slice_ctx[i]; 2953 y_end = FFMIN(sl->mb_y + 1, h->mb_height); 2954 x_end = (sl->mb_y >= h->mb_height) ? h->mb_width : sl->mb_x; 2955 2956 for (j = sl->resync_mb_y; j < y_end; j += 1 + FIELD_OR_MBAFF_PICTURE(h)) { 2957 sl->mb_y = j; 2958 loop_filter(h, sl, j > sl->resync_mb_y ? 0 : sl->resync_mb_x, 2959 j == y_end - 1 ? x_end : h->mb_width); 2960 } 2961 } 2962 } 2963 } 2964 2965finish: 2966 h->nb_slice_ctx_queued = 0; 2967 return ret; 2968} 2969