| 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 / MPEG4 part10 codec. |
| 25 | * @author Michael Niedermayer <michaelni@gmx.at> |
| 26 | */ |
| 27 | |
| 28 | #define UNCHECKED_BITSTREAM_READER 1 |
| 29 | |
| 30 | #include "libavutil/avassert.h" |
| 31 | #include "libavutil/display.h" |
| 32 | #include "libavutil/imgutils.h" |
| 33 | #include "libavutil/opt.h" |
| 34 | #include "libavutil/stereo3d.h" |
| 35 | #include "libavutil/timer.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 "h264data.h" |
| 43 | #include "h264chroma.h" |
| 44 | #include "h264_mvpred.h" |
| 45 | #include "golomb.h" |
| 46 | #include "mathops.h" |
| 47 | #include "me_cmp.h" |
| 48 | #include "mpegutils.h" |
| 49 | #include "rectangle.h" |
| 50 | #include "svq3.h" |
| 51 | #include "thread.h" |
| 52 | #include "vdpau_internal.h" |
| 53 | |
| 54 | #include <assert.h> |
| 55 | |
| 56 | const uint16_t ff_h264_mb_sizes[4] = { 256, 384, 512, 768 }; |
| 57 | |
| 58 | int avpriv_h264_has_num_reorder_frames(AVCodecContext *avctx) |
| 59 | { |
| 60 | H264Context *h = avctx->priv_data; |
| 61 | return h ? h->sps.num_reorder_frames : 0; |
| 62 | } |
| 63 | |
| 64 | static void h264_er_decode_mb(void *opaque, int ref, int mv_dir, int mv_type, |
| 65 | int (*mv)[2][4][2], |
| 66 | int mb_x, int mb_y, int mb_intra, int mb_skipped) |
| 67 | { |
| 68 | H264Context *h = opaque; |
| 69 | |
| 70 | h->mb_x = mb_x; |
| 71 | h->mb_y = mb_y; |
| 72 | h->mb_xy = mb_x + mb_y * h->mb_stride; |
| 73 | memset(h->non_zero_count_cache, 0, sizeof(h->non_zero_count_cache)); |
| 74 | av_assert1(ref >= 0); |
| 75 | /* FIXME: It is possible albeit uncommon that slice references |
| 76 | * differ between slices. We take the easy approach and ignore |
| 77 | * it for now. If this turns out to have any relevance in |
| 78 | * practice then correct remapping should be added. */ |
| 79 | if (ref >= h->ref_count[0]) |
| 80 | ref = 0; |
| 81 | if (!h->ref_list[0][ref].f.data[0]) { |
| 82 | av_log(h->avctx, AV_LOG_DEBUG, "Reference not available for error concealing\n"); |
| 83 | ref = 0; |
| 84 | } |
| 85 | if ((h->ref_list[0][ref].reference&3) != 3) { |
| 86 | av_log(h->avctx, AV_LOG_DEBUG, "Reference invalid\n"); |
| 87 | return; |
| 88 | } |
| 89 | fill_rectangle(&h->cur_pic.ref_index[0][4 * h->mb_xy], |
| 90 | 2, 2, 2, ref, 1); |
| 91 | fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, ref, 1); |
| 92 | fill_rectangle(h->mv_cache[0][scan8[0]], 4, 4, 8, |
| 93 | pack16to32((*mv)[0][0][0], (*mv)[0][0][1]), 4); |
| 94 | h->mb_mbaff = |
| 95 | h->mb_field_decoding_flag = 0; |
| 96 | ff_h264_hl_decode_mb(h); |
| 97 | } |
| 98 | |
| 99 | void ff_h264_draw_horiz_band(H264Context *h, int y, int height) |
| 100 | { |
| 101 | AVCodecContext *avctx = h->avctx; |
| 102 | AVFrame *cur = &h->cur_pic.f; |
| 103 | AVFrame *last = h->ref_list[0][0].f.data[0] ? &h->ref_list[0][0].f : NULL; |
| 104 | const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt); |
| 105 | int vshift = desc->log2_chroma_h; |
| 106 | const int field_pic = h->picture_structure != PICT_FRAME; |
| 107 | if (field_pic) { |
| 108 | height <<= 1; |
| 109 | y <<= 1; |
| 110 | } |
| 111 | |
| 112 | height = FFMIN(height, avctx->height - y); |
| 113 | |
| 114 | if (field_pic && h->first_field && !(avctx->slice_flags & SLICE_FLAG_ALLOW_FIELD)) |
| 115 | return; |
| 116 | |
| 117 | if (avctx->draw_horiz_band) { |
| 118 | AVFrame *src; |
| 119 | int offset[AV_NUM_DATA_POINTERS]; |
| 120 | int i; |
| 121 | |
| 122 | if (cur->pict_type == AV_PICTURE_TYPE_B || h->low_delay || |
| 123 | (avctx->slice_flags & SLICE_FLAG_CODED_ORDER)) |
| 124 | src = cur; |
| 125 | else if (last) |
| 126 | src = last; |
| 127 | else |
| 128 | return; |
| 129 | |
| 130 | offset[0] = y * src->linesize[0]; |
| 131 | offset[1] = |
| 132 | offset[2] = (y >> vshift) * src->linesize[1]; |
| 133 | for (i = 3; i < AV_NUM_DATA_POINTERS; i++) |
| 134 | offset[i] = 0; |
| 135 | |
| 136 | emms_c(); |
| 137 | |
| 138 | avctx->draw_horiz_band(avctx, src, offset, |
| 139 | y, h->picture_structure, height); |
| 140 | } |
| 141 | } |
| 142 | |
| 143 | /** |
| 144 | * Check if the top & left blocks are available if needed and |
| 145 | * change the dc mode so it only uses the available blocks. |
| 146 | */ |
| 147 | int ff_h264_check_intra4x4_pred_mode(H264Context *h) |
| 148 | { |
| 149 | static const int8_t top[12] = { |
| 150 | -1, 0, LEFT_DC_PRED, -1, -1, -1, -1, -1, 0 |
| 151 | }; |
| 152 | static const int8_t left[12] = { |
| 153 | 0, -1, TOP_DC_PRED, 0, -1, -1, -1, 0, -1, DC_128_PRED |
| 154 | }; |
| 155 | int i; |
| 156 | |
| 157 | if (!(h->top_samples_available & 0x8000)) { |
| 158 | for (i = 0; i < 4; i++) { |
| 159 | int status = top[h->intra4x4_pred_mode_cache[scan8[0] + i]]; |
| 160 | if (status < 0) { |
| 161 | av_log(h->avctx, AV_LOG_ERROR, |
| 162 | "top block unavailable for requested intra4x4 mode %d at %d %d\n", |
| 163 | status, h->mb_x, h->mb_y); |
| 164 | return AVERROR_INVALIDDATA; |
| 165 | } else if (status) { |
| 166 | h->intra4x4_pred_mode_cache[scan8[0] + i] = status; |
| 167 | } |
| 168 | } |
| 169 | } |
| 170 | |
| 171 | if ((h->left_samples_available & 0x8888) != 0x8888) { |
| 172 | static const int mask[4] = { 0x8000, 0x2000, 0x80, 0x20 }; |
| 173 | for (i = 0; i < 4; i++) |
| 174 | if (!(h->left_samples_available & mask[i])) { |
| 175 | int status = left[h->intra4x4_pred_mode_cache[scan8[0] + 8 * i]]; |
| 176 | if (status < 0) { |
| 177 | av_log(h->avctx, AV_LOG_ERROR, |
| 178 | "left block unavailable for requested intra4x4 mode %d at %d %d\n", |
| 179 | status, h->mb_x, h->mb_y); |
| 180 | return AVERROR_INVALIDDATA; |
| 181 | } else if (status) { |
| 182 | h->intra4x4_pred_mode_cache[scan8[0] + 8 * i] = status; |
| 183 | } |
| 184 | } |
| 185 | } |
| 186 | |
| 187 | return 0; |
| 188 | } // FIXME cleanup like ff_h264_check_intra_pred_mode |
| 189 | |
| 190 | /** |
| 191 | * Check if the top & left blocks are available if needed and |
| 192 | * change the dc mode so it only uses the available blocks. |
| 193 | */ |
| 194 | int ff_h264_check_intra_pred_mode(H264Context *h, int mode, int is_chroma) |
| 195 | { |
| 196 | static const int8_t top[4] = { LEFT_DC_PRED8x8, 1, -1, -1 }; |
| 197 | static const int8_t left[5] = { TOP_DC_PRED8x8, -1, 2, -1, DC_128_PRED8x8 }; |
| 198 | |
| 199 | if (mode > 3U) { |
| 200 | av_log(h->avctx, AV_LOG_ERROR, |
| 201 | "out of range intra chroma pred mode at %d %d\n", |
| 202 | h->mb_x, h->mb_y); |
| 203 | return AVERROR_INVALIDDATA; |
| 204 | } |
| 205 | |
| 206 | if (!(h->top_samples_available & 0x8000)) { |
| 207 | mode = top[mode]; |
| 208 | if (mode < 0) { |
| 209 | av_log(h->avctx, AV_LOG_ERROR, |
| 210 | "top block unavailable for requested intra mode at %d %d\n", |
| 211 | h->mb_x, h->mb_y); |
| 212 | return AVERROR_INVALIDDATA; |
| 213 | } |
| 214 | } |
| 215 | |
| 216 | if ((h->left_samples_available & 0x8080) != 0x8080) { |
| 217 | mode = left[mode]; |
| 218 | if (mode < 0) { |
| 219 | av_log(h->avctx, AV_LOG_ERROR, |
| 220 | "left block unavailable for requested intra mode at %d %d\n", |
| 221 | h->mb_x, h->mb_y); |
| 222 | return AVERROR_INVALIDDATA; |
| 223 | } |
| 224 | if (is_chroma && (h->left_samples_available & 0x8080)) { |
| 225 | // mad cow disease mode, aka MBAFF + constrained_intra_pred |
| 226 | mode = ALZHEIMER_DC_L0T_PRED8x8 + |
| 227 | (!(h->left_samples_available & 0x8000)) + |
| 228 | 2 * (mode == DC_128_PRED8x8); |
| 229 | } |
| 230 | } |
| 231 | |
| 232 | return mode; |
| 233 | } |
| 234 | |
| 235 | const uint8_t *ff_h264_decode_nal(H264Context *h, const uint8_t *src, |
| 236 | int *dst_length, int *consumed, int length) |
| 237 | { |
| 238 | int i, si, di; |
| 239 | uint8_t *dst; |
| 240 | int bufidx; |
| 241 | |
| 242 | // src[0]&0x80; // forbidden bit |
| 243 | h->nal_ref_idc = src[0] >> 5; |
| 244 | h->nal_unit_type = src[0] & 0x1F; |
| 245 | |
| 246 | src++; |
| 247 | length--; |
| 248 | |
| 249 | #define STARTCODE_TEST \ |
| 250 | if (i + 2 < length && src[i + 1] == 0 && src[i + 2] <= 3) { \ |
| 251 | if (src[i + 2] != 3 && src[i + 2] != 0) { \ |
| 252 | /* startcode, so we must be past the end */ \ |
| 253 | length = i; \ |
| 254 | } \ |
| 255 | break; \ |
| 256 | } |
| 257 | |
| 258 | #if HAVE_FAST_UNALIGNED |
| 259 | #define FIND_FIRST_ZERO \ |
| 260 | if (i > 0 && !src[i]) \ |
| 261 | i--; \ |
| 262 | while (src[i]) \ |
| 263 | i++ |
| 264 | |
| 265 | #if HAVE_FAST_64BIT |
| 266 | for (i = 0; i + 1 < length; i += 9) { |
| 267 | if (!((~AV_RN64A(src + i) & |
| 268 | (AV_RN64A(src + i) - 0x0100010001000101ULL)) & |
| 269 | 0x8000800080008080ULL)) |
| 270 | continue; |
| 271 | FIND_FIRST_ZERO; |
| 272 | STARTCODE_TEST; |
| 273 | i -= 7; |
| 274 | } |
| 275 | #else |
| 276 | for (i = 0; i + 1 < length; i += 5) { |
| 277 | if (!((~AV_RN32A(src + i) & |
| 278 | (AV_RN32A(src + i) - 0x01000101U)) & |
| 279 | 0x80008080U)) |
| 280 | continue; |
| 281 | FIND_FIRST_ZERO; |
| 282 | STARTCODE_TEST; |
| 283 | i -= 3; |
| 284 | } |
| 285 | #endif |
| 286 | #else |
| 287 | for (i = 0; i + 1 < length; i += 2) { |
| 288 | if (src[i]) |
| 289 | continue; |
| 290 | if (i > 0 && src[i - 1] == 0) |
| 291 | i--; |
| 292 | STARTCODE_TEST; |
| 293 | } |
| 294 | #endif |
| 295 | |
| 296 | // use second escape buffer for inter data |
| 297 | bufidx = h->nal_unit_type == NAL_DPC ? 1 : 0; |
| 298 | |
| 299 | av_fast_padded_malloc(&h->rbsp_buffer[bufidx], &h->rbsp_buffer_size[bufidx], length+MAX_MBPAIR_SIZE); |
| 300 | dst = h->rbsp_buffer[bufidx]; |
| 301 | |
| 302 | if (!dst) |
| 303 | return NULL; |
| 304 | |
| 305 | if(i>=length-1){ //no escaped 0 |
| 306 | *dst_length= length; |
| 307 | *consumed= length+1; //+1 for the header |
| 308 | if(h->avctx->flags2 & CODEC_FLAG2_FAST){ |
| 309 | return src; |
| 310 | }else{ |
| 311 | memcpy(dst, src, length); |
| 312 | return dst; |
| 313 | } |
| 314 | } |
| 315 | |
| 316 | memcpy(dst, src, i); |
| 317 | si = di = i; |
| 318 | while (si + 2 < length) { |
| 319 | // remove escapes (very rare 1:2^22) |
| 320 | if (src[si + 2] > 3) { |
| 321 | dst[di++] = src[si++]; |
| 322 | dst[di++] = src[si++]; |
| 323 | } else if (src[si] == 0 && src[si + 1] == 0 && src[si + 2] != 0) { |
| 324 | if (src[si + 2] == 3) { // escape |
| 325 | dst[di++] = 0; |
| 326 | dst[di++] = 0; |
| 327 | si += 3; |
| 328 | continue; |
| 329 | } else // next start code |
| 330 | goto nsc; |
| 331 | } |
| 332 | |
| 333 | dst[di++] = src[si++]; |
| 334 | } |
| 335 | while (si < length) |
| 336 | dst[di++] = src[si++]; |
| 337 | |
| 338 | nsc: |
| 339 | memset(dst + di, 0, FF_INPUT_BUFFER_PADDING_SIZE); |
| 340 | |
| 341 | *dst_length = di; |
| 342 | *consumed = si + 1; // +1 for the header |
| 343 | /* FIXME store exact number of bits in the getbitcontext |
| 344 | * (it is needed for decoding) */ |
| 345 | return dst; |
| 346 | } |
| 347 | |
| 348 | /** |
| 349 | * Identify the exact end of the bitstream |
| 350 | * @return the length of the trailing, or 0 if damaged |
| 351 | */ |
| 352 | static int decode_rbsp_trailing(H264Context *h, const uint8_t *src) |
| 353 | { |
| 354 | int v = *src; |
| 355 | int r; |
| 356 | |
| 357 | tprintf(h->avctx, "rbsp trailing %X\n", v); |
| 358 | |
| 359 | for (r = 1; r < 9; r++) { |
| 360 | if (v & 1) |
| 361 | return r; |
| 362 | v >>= 1; |
| 363 | } |
| 364 | return 0; |
| 365 | } |
| 366 | |
| 367 | void ff_h264_free_tables(H264Context *h, int free_rbsp) |
| 368 | { |
| 369 | int i; |
| 370 | H264Context *hx; |
| 371 | |
| 372 | av_freep(&h->intra4x4_pred_mode); |
| 373 | av_freep(&h->chroma_pred_mode_table); |
| 374 | av_freep(&h->cbp_table); |
| 375 | av_freep(&h->mvd_table[0]); |
| 376 | av_freep(&h->mvd_table[1]); |
| 377 | av_freep(&h->direct_table); |
| 378 | av_freep(&h->non_zero_count); |
| 379 | av_freep(&h->slice_table_base); |
| 380 | h->slice_table = NULL; |
| 381 | av_freep(&h->list_counts); |
| 382 | |
| 383 | av_freep(&h->mb2b_xy); |
| 384 | av_freep(&h->mb2br_xy); |
| 385 | |
| 386 | av_buffer_pool_uninit(&h->qscale_table_pool); |
| 387 | av_buffer_pool_uninit(&h->mb_type_pool); |
| 388 | av_buffer_pool_uninit(&h->motion_val_pool); |
| 389 | av_buffer_pool_uninit(&h->ref_index_pool); |
| 390 | |
| 391 | if (free_rbsp && h->DPB) { |
| 392 | for (i = 0; i < H264_MAX_PICTURE_COUNT; i++) |
| 393 | ff_h264_unref_picture(h, &h->DPB[i]); |
| 394 | av_freep(&h->DPB); |
| 395 | } else if (h->DPB) { |
| 396 | for (i = 0; i < H264_MAX_PICTURE_COUNT; i++) |
| 397 | h->DPB[i].needs_realloc = 1; |
| 398 | } |
| 399 | |
| 400 | h->cur_pic_ptr = NULL; |
| 401 | |
| 402 | for (i = 0; i < H264_MAX_THREADS; i++) { |
| 403 | hx = h->thread_context[i]; |
| 404 | if (!hx) |
| 405 | continue; |
| 406 | av_freep(&hx->top_borders[1]); |
| 407 | av_freep(&hx->top_borders[0]); |
| 408 | av_freep(&hx->bipred_scratchpad); |
| 409 | av_freep(&hx->edge_emu_buffer); |
| 410 | av_freep(&hx->dc_val_base); |
| 411 | av_freep(&hx->er.mb_index2xy); |
| 412 | av_freep(&hx->er.error_status_table); |
| 413 | av_freep(&hx->er.er_temp_buffer); |
| 414 | av_freep(&hx->er.mbintra_table); |
| 415 | av_freep(&hx->er.mbskip_table); |
| 416 | |
| 417 | if (free_rbsp) { |
| 418 | av_freep(&hx->rbsp_buffer[1]); |
| 419 | av_freep(&hx->rbsp_buffer[0]); |
| 420 | hx->rbsp_buffer_size[0] = 0; |
| 421 | hx->rbsp_buffer_size[1] = 0; |
| 422 | } |
| 423 | if (i) |
| 424 | av_freep(&h->thread_context[i]); |
| 425 | } |
| 426 | } |
| 427 | |
| 428 | int ff_h264_alloc_tables(H264Context *h) |
| 429 | { |
| 430 | const int big_mb_num = h->mb_stride * (h->mb_height + 1); |
| 431 | const int row_mb_num = 2*h->mb_stride*FFMAX(h->avctx->thread_count, 1); |
| 432 | int x, y, i; |
| 433 | |
| 434 | FF_ALLOCZ_ARRAY_OR_GOTO(h->avctx, h->intra4x4_pred_mode, |
| 435 | row_mb_num, 8 * sizeof(uint8_t), fail) |
| 436 | FF_ALLOCZ_OR_GOTO(h->avctx, h->non_zero_count, |
| 437 | big_mb_num * 48 * sizeof(uint8_t), fail) |
| 438 | FF_ALLOCZ_OR_GOTO(h->avctx, h->slice_table_base, |
| 439 | (big_mb_num + h->mb_stride) * sizeof(*h->slice_table_base), fail) |
| 440 | FF_ALLOCZ_OR_GOTO(h->avctx, h->cbp_table, |
| 441 | big_mb_num * sizeof(uint16_t), fail) |
| 442 | FF_ALLOCZ_OR_GOTO(h->avctx, h->chroma_pred_mode_table, |
| 443 | big_mb_num * sizeof(uint8_t), fail) |
| 444 | FF_ALLOCZ_ARRAY_OR_GOTO(h->avctx, h->mvd_table[0], |
| 445 | row_mb_num, 16 * sizeof(uint8_t), fail); |
| 446 | FF_ALLOCZ_ARRAY_OR_GOTO(h->avctx, h->mvd_table[1], |
| 447 | row_mb_num, 16 * sizeof(uint8_t), fail); |
| 448 | FF_ALLOCZ_OR_GOTO(h->avctx, h->direct_table, |
| 449 | 4 * big_mb_num * sizeof(uint8_t), fail); |
| 450 | FF_ALLOCZ_OR_GOTO(h->avctx, h->list_counts, |
| 451 | big_mb_num * sizeof(uint8_t), fail) |
| 452 | |
| 453 | memset(h->slice_table_base, -1, |
| 454 | (big_mb_num + h->mb_stride) * sizeof(*h->slice_table_base)); |
| 455 | h->slice_table = h->slice_table_base + h->mb_stride * 2 + 1; |
| 456 | |
| 457 | FF_ALLOCZ_OR_GOTO(h->avctx, h->mb2b_xy, |
| 458 | big_mb_num * sizeof(uint32_t), fail); |
| 459 | FF_ALLOCZ_OR_GOTO(h->avctx, h->mb2br_xy, |
| 460 | big_mb_num * sizeof(uint32_t), fail); |
| 461 | for (y = 0; y < h->mb_height; y++) |
| 462 | for (x = 0; x < h->mb_width; x++) { |
| 463 | const int mb_xy = x + y * h->mb_stride; |
| 464 | const int b_xy = 4 * x + 4 * y * h->b_stride; |
| 465 | |
| 466 | h->mb2b_xy[mb_xy] = b_xy; |
| 467 | h->mb2br_xy[mb_xy] = 8 * (FMO ? mb_xy : (mb_xy % (2 * h->mb_stride))); |
| 468 | } |
| 469 | |
| 470 | if (!h->dequant4_coeff[0]) |
| 471 | h264_init_dequant_tables(h); |
| 472 | |
| 473 | if (!h->DPB) { |
| 474 | h->DPB = av_mallocz_array(H264_MAX_PICTURE_COUNT, sizeof(*h->DPB)); |
| 475 | if (!h->DPB) |
| 476 | goto fail; |
| 477 | for (i = 0; i < H264_MAX_PICTURE_COUNT; i++) |
| 478 | av_frame_unref(&h->DPB[i].f); |
| 479 | av_frame_unref(&h->cur_pic.f); |
| 480 | } |
| 481 | |
| 482 | return 0; |
| 483 | |
| 484 | fail: |
| 485 | ff_h264_free_tables(h, 1); |
| 486 | return AVERROR(ENOMEM); |
| 487 | } |
| 488 | |
| 489 | /** |
| 490 | * Init context |
| 491 | * Allocate buffers which are not shared amongst multiple threads. |
| 492 | */ |
| 493 | int ff_h264_context_init(H264Context *h) |
| 494 | { |
| 495 | ERContext *er = &h->er; |
| 496 | int mb_array_size = h->mb_height * h->mb_stride; |
| 497 | int y_size = (2 * h->mb_width + 1) * (2 * h->mb_height + 1); |
| 498 | int c_size = h->mb_stride * (h->mb_height + 1); |
| 499 | int yc_size = y_size + 2 * c_size; |
| 500 | int x, y, i; |
| 501 | |
| 502 | FF_ALLOCZ_ARRAY_OR_GOTO(h->avctx, h->top_borders[0], |
| 503 | h->mb_width, 16 * 3 * sizeof(uint8_t) * 2, fail) |
| 504 | FF_ALLOCZ_ARRAY_OR_GOTO(h->avctx, h->top_borders[1], |
| 505 | h->mb_width, 16 * 3 * sizeof(uint8_t) * 2, fail) |
| 506 | |
| 507 | h->ref_cache[0][scan8[5] + 1] = |
| 508 | h->ref_cache[0][scan8[7] + 1] = |
| 509 | h->ref_cache[0][scan8[13] + 1] = |
| 510 | h->ref_cache[1][scan8[5] + 1] = |
| 511 | h->ref_cache[1][scan8[7] + 1] = |
| 512 | h->ref_cache[1][scan8[13] + 1] = PART_NOT_AVAILABLE; |
| 513 | |
| 514 | if (CONFIG_ERROR_RESILIENCE) { |
| 515 | /* init ER */ |
| 516 | er->avctx = h->avctx; |
| 517 | er->mecc = &h->mecc; |
| 518 | er->decode_mb = h264_er_decode_mb; |
| 519 | er->opaque = h; |
| 520 | er->quarter_sample = 1; |
| 521 | |
| 522 | er->mb_num = h->mb_num; |
| 523 | er->mb_width = h->mb_width; |
| 524 | er->mb_height = h->mb_height; |
| 525 | er->mb_stride = h->mb_stride; |
| 526 | er->b8_stride = h->mb_width * 2 + 1; |
| 527 | |
| 528 | // error resilience code looks cleaner with this |
| 529 | FF_ALLOCZ_OR_GOTO(h->avctx, er->mb_index2xy, |
| 530 | (h->mb_num + 1) * sizeof(int), fail); |
| 531 | |
| 532 | for (y = 0; y < h->mb_height; y++) |
| 533 | for (x = 0; x < h->mb_width; x++) |
| 534 | er->mb_index2xy[x + y * h->mb_width] = x + y * h->mb_stride; |
| 535 | |
| 536 | er->mb_index2xy[h->mb_height * h->mb_width] = (h->mb_height - 1) * |
| 537 | h->mb_stride + h->mb_width; |
| 538 | |
| 539 | FF_ALLOCZ_OR_GOTO(h->avctx, er->error_status_table, |
| 540 | mb_array_size * sizeof(uint8_t), fail); |
| 541 | |
| 542 | FF_ALLOC_OR_GOTO(h->avctx, er->mbintra_table, mb_array_size, fail); |
| 543 | memset(er->mbintra_table, 1, mb_array_size); |
| 544 | |
| 545 | FF_ALLOCZ_OR_GOTO(h->avctx, er->mbskip_table, mb_array_size + 2, fail); |
| 546 | |
| 547 | FF_ALLOC_OR_GOTO(h->avctx, er->er_temp_buffer, |
| 548 | h->mb_height * h->mb_stride, fail); |
| 549 | |
| 550 | FF_ALLOCZ_OR_GOTO(h->avctx, h->dc_val_base, |
| 551 | yc_size * sizeof(int16_t), fail); |
| 552 | er->dc_val[0] = h->dc_val_base + h->mb_width * 2 + 2; |
| 553 | er->dc_val[1] = h->dc_val_base + y_size + h->mb_stride + 1; |
| 554 | er->dc_val[2] = er->dc_val[1] + c_size; |
| 555 | for (i = 0; i < yc_size; i++) |
| 556 | h->dc_val_base[i] = 1024; |
| 557 | } |
| 558 | |
| 559 | return 0; |
| 560 | |
| 561 | fail: |
| 562 | return AVERROR(ENOMEM); // ff_h264_free_tables will clean up for us |
| 563 | } |
| 564 | |
| 565 | static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size, |
| 566 | int parse_extradata); |
| 567 | |
| 568 | int ff_h264_decode_extradata(H264Context *h, const uint8_t *buf, int size) |
| 569 | { |
| 570 | AVCodecContext *avctx = h->avctx; |
| 571 | int ret; |
| 572 | |
| 573 | if (!buf || size <= 0) |
| 574 | return -1; |
| 575 | |
| 576 | if (buf[0] == 1) { |
| 577 | int i, cnt, nalsize; |
| 578 | const unsigned char *p = buf; |
| 579 | |
| 580 | h->is_avc = 1; |
| 581 | |
| 582 | if (size < 7) { |
| 583 | av_log(avctx, AV_LOG_ERROR, |
| 584 | "avcC %d too short\n", size); |
| 585 | return AVERROR_INVALIDDATA; |
| 586 | } |
| 587 | /* sps and pps in the avcC always have length coded with 2 bytes, |
| 588 | * so put a fake nal_length_size = 2 while parsing them */ |
| 589 | h->nal_length_size = 2; |
| 590 | // Decode sps from avcC |
| 591 | cnt = *(p + 5) & 0x1f; // Number of sps |
| 592 | p += 6; |
| 593 | for (i = 0; i < cnt; i++) { |
| 594 | nalsize = AV_RB16(p) + 2; |
| 595 | if(nalsize > size - (p-buf)) |
| 596 | return AVERROR_INVALIDDATA; |
| 597 | ret = decode_nal_units(h, p, nalsize, 1); |
| 598 | if (ret < 0) { |
| 599 | av_log(avctx, AV_LOG_ERROR, |
| 600 | "Decoding sps %d from avcC failed\n", i); |
| 601 | return ret; |
| 602 | } |
| 603 | p += nalsize; |
| 604 | } |
| 605 | // Decode pps from avcC |
| 606 | cnt = *(p++); // Number of pps |
| 607 | for (i = 0; i < cnt; i++) { |
| 608 | nalsize = AV_RB16(p) + 2; |
| 609 | if(nalsize > size - (p-buf)) |
| 610 | return AVERROR_INVALIDDATA; |
| 611 | ret = decode_nal_units(h, p, nalsize, 1); |
| 612 | if (ret < 0) { |
| 613 | av_log(avctx, AV_LOG_ERROR, |
| 614 | "Decoding pps %d from avcC failed\n", i); |
| 615 | return ret; |
| 616 | } |
| 617 | p += nalsize; |
| 618 | } |
| 619 | // Store right nal length size that will be used to parse all other nals |
| 620 | h->nal_length_size = (buf[4] & 0x03) + 1; |
| 621 | } else { |
| 622 | h->is_avc = 0; |
| 623 | ret = decode_nal_units(h, buf, size, 1); |
| 624 | if (ret < 0) |
| 625 | return ret; |
| 626 | } |
| 627 | return size; |
| 628 | } |
| 629 | |
| 630 | av_cold int ff_h264_decode_init(AVCodecContext *avctx) |
| 631 | { |
| 632 | H264Context *h = avctx->priv_data; |
| 633 | int i; |
| 634 | int ret; |
| 635 | |
| 636 | h->avctx = avctx; |
| 637 | |
| 638 | h->bit_depth_luma = 8; |
| 639 | h->chroma_format_idc = 1; |
| 640 | |
| 641 | h->avctx->bits_per_raw_sample = 8; |
| 642 | h->cur_chroma_format_idc = 1; |
| 643 | |
| 644 | ff_h264dsp_init(&h->h264dsp, 8, 1); |
| 645 | av_assert0(h->sps.bit_depth_chroma == 0); |
| 646 | ff_h264chroma_init(&h->h264chroma, h->sps.bit_depth_chroma); |
| 647 | ff_h264qpel_init(&h->h264qpel, 8); |
| 648 | ff_h264_pred_init(&h->hpc, h->avctx->codec_id, 8, 1); |
| 649 | |
| 650 | h->dequant_coeff_pps = -1; |
| 651 | h->current_sps_id = -1; |
| 652 | |
| 653 | /* needed so that IDCT permutation is known early */ |
| 654 | if (CONFIG_ERROR_RESILIENCE) |
| 655 | ff_me_cmp_init(&h->mecc, h->avctx); |
| 656 | ff_videodsp_init(&h->vdsp, 8); |
| 657 | |
| 658 | memset(h->pps.scaling_matrix4, 16, 6 * 16 * sizeof(uint8_t)); |
| 659 | memset(h->pps.scaling_matrix8, 16, 2 * 64 * sizeof(uint8_t)); |
| 660 | |
| 661 | h->picture_structure = PICT_FRAME; |
| 662 | h->slice_context_count = 1; |
| 663 | h->workaround_bugs = avctx->workaround_bugs; |
| 664 | h->flags = avctx->flags; |
| 665 | |
| 666 | /* set defaults */ |
| 667 | // s->decode_mb = ff_h263_decode_mb; |
| 668 | if (!avctx->has_b_frames) |
| 669 | h->low_delay = 1; |
| 670 | |
| 671 | avctx->chroma_sample_location = AVCHROMA_LOC_LEFT; |
| 672 | |
| 673 | ff_h264_decode_init_vlc(); |
| 674 | |
| 675 | ff_init_cabac_states(); |
| 676 | |
| 677 | h->pixel_shift = 0; |
| 678 | h->sps.bit_depth_luma = avctx->bits_per_raw_sample = 8; |
| 679 | |
| 680 | h->thread_context[0] = h; |
| 681 | h->outputed_poc = h->next_outputed_poc = INT_MIN; |
| 682 | for (i = 0; i < MAX_DELAYED_PIC_COUNT; i++) |
| 683 | h->last_pocs[i] = INT_MIN; |
| 684 | h->prev_poc_msb = 1 << 16; |
| 685 | h->prev_frame_num = -1; |
| 686 | h->x264_build = -1; |
| 687 | h->sei_fpa.frame_packing_arrangement_cancel_flag = -1; |
| 688 | ff_h264_reset_sei(h); |
| 689 | if (avctx->codec_id == AV_CODEC_ID_H264) { |
| 690 | if (avctx->ticks_per_frame == 1) { |
| 691 | if(h->avctx->time_base.den < INT_MAX/2) { |
| 692 | h->avctx->time_base.den *= 2; |
| 693 | } else |
| 694 | h->avctx->time_base.num /= 2; |
| 695 | } |
| 696 | avctx->ticks_per_frame = 2; |
| 697 | } |
| 698 | |
| 699 | if (avctx->extradata_size > 0 && avctx->extradata) { |
| 700 | ret = ff_h264_decode_extradata(h, avctx->extradata, avctx->extradata_size); |
| 701 | if (ret < 0) { |
| 702 | ff_h264_free_context(h); |
| 703 | return ret; |
| 704 | } |
| 705 | } |
| 706 | |
| 707 | if (h->sps.bitstream_restriction_flag && |
| 708 | h->avctx->has_b_frames < h->sps.num_reorder_frames) { |
| 709 | h->avctx->has_b_frames = h->sps.num_reorder_frames; |
| 710 | h->low_delay = 0; |
| 711 | } |
| 712 | |
| 713 | avctx->internal->allocate_progress = 1; |
| 714 | |
| 715 | ff_h264_flush_change(h); |
| 716 | |
| 717 | return 0; |
| 718 | } |
| 719 | |
| 720 | static int decode_init_thread_copy(AVCodecContext *avctx) |
| 721 | { |
| 722 | H264Context *h = avctx->priv_data; |
| 723 | |
| 724 | if (!avctx->internal->is_copy) |
| 725 | return 0; |
| 726 | memset(h->sps_buffers, 0, sizeof(h->sps_buffers)); |
| 727 | memset(h->pps_buffers, 0, sizeof(h->pps_buffers)); |
| 728 | |
| 729 | h->rbsp_buffer[0] = NULL; |
| 730 | h->rbsp_buffer[1] = NULL; |
| 731 | h->rbsp_buffer_size[0] = 0; |
| 732 | h->rbsp_buffer_size[1] = 0; |
| 733 | h->context_initialized = 0; |
| 734 | |
| 735 | return 0; |
| 736 | } |
| 737 | |
| 738 | /** |
| 739 | * Run setup operations that must be run after slice header decoding. |
| 740 | * This includes finding the next displayed frame. |
| 741 | * |
| 742 | * @param h h264 master context |
| 743 | * @param setup_finished enough NALs have been read that we can call |
| 744 | * ff_thread_finish_setup() |
| 745 | */ |
| 746 | static void decode_postinit(H264Context *h, int setup_finished) |
| 747 | { |
| 748 | H264Picture *out = h->cur_pic_ptr; |
| 749 | H264Picture *cur = h->cur_pic_ptr; |
| 750 | int i, pics, out_of_order, out_idx; |
| 751 | |
| 752 | h->cur_pic_ptr->f.pict_type = h->pict_type; |
| 753 | |
| 754 | if (h->next_output_pic) |
| 755 | return; |
| 756 | |
| 757 | if (cur->field_poc[0] == INT_MAX || cur->field_poc[1] == INT_MAX) { |
| 758 | /* FIXME: if we have two PAFF fields in one packet, we can't start |
| 759 | * the next thread here. If we have one field per packet, we can. |
| 760 | * The check in decode_nal_units() is not good enough to find this |
| 761 | * yet, so we assume the worst for now. */ |
| 762 | // if (setup_finished) |
| 763 | // ff_thread_finish_setup(h->avctx); |
| 764 | return; |
| 765 | } |
| 766 | |
| 767 | cur->f.interlaced_frame = 0; |
| 768 | cur->f.repeat_pict = 0; |
| 769 | |
| 770 | /* Signal interlacing information externally. */ |
| 771 | /* Prioritize picture timing SEI information over used |
| 772 | * decoding process if it exists. */ |
| 773 | |
| 774 | if (h->sps.pic_struct_present_flag) { |
| 775 | switch (h->sei_pic_struct) { |
| 776 | case SEI_PIC_STRUCT_FRAME: |
| 777 | break; |
| 778 | case SEI_PIC_STRUCT_TOP_FIELD: |
| 779 | case SEI_PIC_STRUCT_BOTTOM_FIELD: |
| 780 | cur->f.interlaced_frame = 1; |
| 781 | break; |
| 782 | case SEI_PIC_STRUCT_TOP_BOTTOM: |
| 783 | case SEI_PIC_STRUCT_BOTTOM_TOP: |
| 784 | if (FIELD_OR_MBAFF_PICTURE(h)) |
| 785 | cur->f.interlaced_frame = 1; |
| 786 | else |
| 787 | // try to flag soft telecine progressive |
| 788 | cur->f.interlaced_frame = h->prev_interlaced_frame; |
| 789 | break; |
| 790 | case SEI_PIC_STRUCT_TOP_BOTTOM_TOP: |
| 791 | case SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM: |
| 792 | /* Signal the possibility of telecined film externally |
| 793 | * (pic_struct 5,6). From these hints, let the applications |
| 794 | * decide if they apply deinterlacing. */ |
| 795 | cur->f.repeat_pict = 1; |
| 796 | break; |
| 797 | case SEI_PIC_STRUCT_FRAME_DOUBLING: |
| 798 | cur->f.repeat_pict = 2; |
| 799 | break; |
| 800 | case SEI_PIC_STRUCT_FRAME_TRIPLING: |
| 801 | cur->f.repeat_pict = 4; |
| 802 | break; |
| 803 | } |
| 804 | |
| 805 | if ((h->sei_ct_type & 3) && |
| 806 | h->sei_pic_struct <= SEI_PIC_STRUCT_BOTTOM_TOP) |
| 807 | cur->f.interlaced_frame = (h->sei_ct_type & (1 << 1)) != 0; |
| 808 | } else { |
| 809 | /* Derive interlacing flag from used decoding process. */ |
| 810 | cur->f.interlaced_frame = FIELD_OR_MBAFF_PICTURE(h); |
| 811 | } |
| 812 | h->prev_interlaced_frame = cur->f.interlaced_frame; |
| 813 | |
| 814 | if (cur->field_poc[0] != cur->field_poc[1]) { |
| 815 | /* Derive top_field_first from field pocs. */ |
| 816 | cur->f.top_field_first = cur->field_poc[0] < cur->field_poc[1]; |
| 817 | } else { |
| 818 | if (cur->f.interlaced_frame || h->sps.pic_struct_present_flag) { |
| 819 | /* Use picture timing SEI information. Even if it is a |
| 820 | * information of a past frame, better than nothing. */ |
| 821 | if (h->sei_pic_struct == SEI_PIC_STRUCT_TOP_BOTTOM || |
| 822 | h->sei_pic_struct == SEI_PIC_STRUCT_TOP_BOTTOM_TOP) |
| 823 | cur->f.top_field_first = 1; |
| 824 | else |
| 825 | cur->f.top_field_first = 0; |
| 826 | } else { |
| 827 | /* Most likely progressive */ |
| 828 | cur->f.top_field_first = 0; |
| 829 | } |
| 830 | } |
| 831 | |
| 832 | if (h->sei_frame_packing_present && |
| 833 | h->frame_packing_arrangement_type >= 0 && |
| 834 | h->frame_packing_arrangement_type <= 6 && |
| 835 | h->content_interpretation_type > 0 && |
| 836 | h->content_interpretation_type < 3) { |
| 837 | AVStereo3D *stereo = av_stereo3d_create_side_data(&cur->f); |
| 838 | if (stereo) { |
| 839 | switch (h->frame_packing_arrangement_type) { |
| 840 | case 0: |
| 841 | stereo->type = AV_STEREO3D_CHECKERBOARD; |
| 842 | break; |
| 843 | case 1: |
| 844 | stereo->type = AV_STEREO3D_COLUMNS; |
| 845 | break; |
| 846 | case 2: |
| 847 | stereo->type = AV_STEREO3D_LINES; |
| 848 | break; |
| 849 | case 3: |
| 850 | if (h->quincunx_subsampling) |
| 851 | stereo->type = AV_STEREO3D_SIDEBYSIDE_QUINCUNX; |
| 852 | else |
| 853 | stereo->type = AV_STEREO3D_SIDEBYSIDE; |
| 854 | break; |
| 855 | case 4: |
| 856 | stereo->type = AV_STEREO3D_TOPBOTTOM; |
| 857 | break; |
| 858 | case 5: |
| 859 | stereo->type = AV_STEREO3D_FRAMESEQUENCE; |
| 860 | break; |
| 861 | case 6: |
| 862 | stereo->type = AV_STEREO3D_2D; |
| 863 | break; |
| 864 | } |
| 865 | |
| 866 | if (h->content_interpretation_type == 2) |
| 867 | stereo->flags = AV_STEREO3D_FLAG_INVERT; |
| 868 | } |
| 869 | } |
| 870 | |
| 871 | if (h->sei_display_orientation_present && |
| 872 | (h->sei_anticlockwise_rotation || h->sei_hflip || h->sei_vflip)) { |
| 873 | double angle = h->sei_anticlockwise_rotation * 360 / (double) (1 << 16); |
| 874 | AVFrameSideData *rotation = av_frame_new_side_data(&cur->f, |
| 875 | AV_FRAME_DATA_DISPLAYMATRIX, |
| 876 | sizeof(int32_t) * 9); |
| 877 | if (rotation) { |
| 878 | av_display_rotation_set((int32_t *)rotation->data, angle); |
| 879 | av_display_matrix_flip((int32_t *)rotation->data, |
| 880 | h->sei_vflip, h->sei_hflip); |
| 881 | } |
| 882 | } |
| 883 | |
| 884 | cur->mmco_reset = h->mmco_reset; |
| 885 | h->mmco_reset = 0; |
| 886 | |
| 887 | // FIXME do something with unavailable reference frames |
| 888 | |
| 889 | /* Sort B-frames into display order */ |
| 890 | |
| 891 | if (h->sps.bitstream_restriction_flag && |
| 892 | h->avctx->has_b_frames < h->sps.num_reorder_frames) { |
| 893 | h->avctx->has_b_frames = h->sps.num_reorder_frames; |
| 894 | h->low_delay = 0; |
| 895 | } |
| 896 | |
| 897 | if (h->avctx->strict_std_compliance >= FF_COMPLIANCE_STRICT && |
| 898 | !h->sps.bitstream_restriction_flag) { |
| 899 | h->avctx->has_b_frames = MAX_DELAYED_PIC_COUNT - 1; |
| 900 | h->low_delay = 0; |
| 901 | } |
| 902 | |
| 903 | for (i = 0; 1; i++) { |
| 904 | if(i == MAX_DELAYED_PIC_COUNT || cur->poc < h->last_pocs[i]){ |
| 905 | if(i) |
| 906 | h->last_pocs[i-1] = cur->poc; |
| 907 | break; |
| 908 | } else if(i) { |
| 909 | h->last_pocs[i-1]= h->last_pocs[i]; |
| 910 | } |
| 911 | } |
| 912 | out_of_order = MAX_DELAYED_PIC_COUNT - i; |
| 913 | if( cur->f.pict_type == AV_PICTURE_TYPE_B |
| 914 | || (h->last_pocs[MAX_DELAYED_PIC_COUNT-2] > INT_MIN && h->last_pocs[MAX_DELAYED_PIC_COUNT-1] - h->last_pocs[MAX_DELAYED_PIC_COUNT-2] > 2)) |
| 915 | out_of_order = FFMAX(out_of_order, 1); |
| 916 | if (out_of_order == MAX_DELAYED_PIC_COUNT) { |
| 917 | av_log(h->avctx, AV_LOG_VERBOSE, "Invalid POC %d<%d\n", cur->poc, h->last_pocs[0]); |
| 918 | for (i = 1; i < MAX_DELAYED_PIC_COUNT; i++) |
| 919 | h->last_pocs[i] = INT_MIN; |
| 920 | h->last_pocs[0] = cur->poc; |
| 921 | cur->mmco_reset = 1; |
| 922 | } else if(h->avctx->has_b_frames < out_of_order && !h->sps.bitstream_restriction_flag){ |
| 923 | av_log(h->avctx, AV_LOG_VERBOSE, "Increasing reorder buffer to %d\n", out_of_order); |
| 924 | h->avctx->has_b_frames = out_of_order; |
| 925 | h->low_delay = 0; |
| 926 | } |
| 927 | |
| 928 | pics = 0; |
| 929 | while (h->delayed_pic[pics]) |
| 930 | pics++; |
| 931 | |
| 932 | av_assert0(pics <= MAX_DELAYED_PIC_COUNT); |
| 933 | |
| 934 | h->delayed_pic[pics++] = cur; |
| 935 | if (cur->reference == 0) |
| 936 | cur->reference = DELAYED_PIC_REF; |
| 937 | |
| 938 | out = h->delayed_pic[0]; |
| 939 | out_idx = 0; |
| 940 | for (i = 1; h->delayed_pic[i] && |
| 941 | !h->delayed_pic[i]->f.key_frame && |
| 942 | !h->delayed_pic[i]->mmco_reset; |
| 943 | i++) |
| 944 | if (h->delayed_pic[i]->poc < out->poc) { |
| 945 | out = h->delayed_pic[i]; |
| 946 | out_idx = i; |
| 947 | } |
| 948 | if (h->avctx->has_b_frames == 0 && |
| 949 | (h->delayed_pic[0]->f.key_frame || h->delayed_pic[0]->mmco_reset)) |
| 950 | h->next_outputed_poc = INT_MIN; |
| 951 | out_of_order = out->poc < h->next_outputed_poc; |
| 952 | |
| 953 | if (out_of_order || pics > h->avctx->has_b_frames) { |
| 954 | out->reference &= ~DELAYED_PIC_REF; |
| 955 | // for frame threading, the owner must be the second field's thread or |
| 956 | // else the first thread can release the picture and reuse it unsafely |
| 957 | for (i = out_idx; h->delayed_pic[i]; i++) |
| 958 | h->delayed_pic[i] = h->delayed_pic[i + 1]; |
| 959 | } |
| 960 | if (!out_of_order && pics > h->avctx->has_b_frames) { |
| 961 | h->next_output_pic = out; |
| 962 | if (out_idx == 0 && h->delayed_pic[0] && (h->delayed_pic[0]->f.key_frame || h->delayed_pic[0]->mmco_reset)) { |
| 963 | h->next_outputed_poc = INT_MIN; |
| 964 | } else |
| 965 | h->next_outputed_poc = out->poc; |
| 966 | } else { |
| 967 | av_log(h->avctx, AV_LOG_DEBUG, "no picture %s\n", out_of_order ? "ooo" : ""); |
| 968 | } |
| 969 | |
| 970 | if (h->next_output_pic) { |
| 971 | if (h->next_output_pic->recovered) { |
| 972 | // We have reached an recovery point and all frames after it in |
| 973 | // display order are "recovered". |
| 974 | h->frame_recovered |= FRAME_RECOVERED_SEI; |
| 975 | } |
| 976 | h->next_output_pic->recovered |= !!(h->frame_recovered & FRAME_RECOVERED_SEI); |
| 977 | } |
| 978 | |
| 979 | if (setup_finished && !h->avctx->hwaccel) |
| 980 | ff_thread_finish_setup(h->avctx); |
| 981 | } |
| 982 | |
| 983 | int ff_pred_weight_table(H264Context *h) |
| 984 | { |
| 985 | int list, i; |
| 986 | int luma_def, chroma_def; |
| 987 | |
| 988 | h->use_weight = 0; |
| 989 | h->use_weight_chroma = 0; |
| 990 | h->luma_log2_weight_denom = get_ue_golomb(&h->gb); |
| 991 | if (h->sps.chroma_format_idc) |
| 992 | h->chroma_log2_weight_denom = get_ue_golomb(&h->gb); |
| 993 | luma_def = 1 << h->luma_log2_weight_denom; |
| 994 | chroma_def = 1 << h->chroma_log2_weight_denom; |
| 995 | |
| 996 | for (list = 0; list < 2; list++) { |
| 997 | h->luma_weight_flag[list] = 0; |
| 998 | h->chroma_weight_flag[list] = 0; |
| 999 | for (i = 0; i < h->ref_count[list]; i++) { |
| 1000 | int luma_weight_flag, chroma_weight_flag; |
| 1001 | |
| 1002 | luma_weight_flag = get_bits1(&h->gb); |
| 1003 | if (luma_weight_flag) { |
| 1004 | h->luma_weight[i][list][0] = get_se_golomb(&h->gb); |
| 1005 | h->luma_weight[i][list][1] = get_se_golomb(&h->gb); |
| 1006 | if (h->luma_weight[i][list][0] != luma_def || |
| 1007 | h->luma_weight[i][list][1] != 0) { |
| 1008 | h->use_weight = 1; |
| 1009 | h->luma_weight_flag[list] = 1; |
| 1010 | } |
| 1011 | } else { |
| 1012 | h->luma_weight[i][list][0] = luma_def; |
| 1013 | h->luma_weight[i][list][1] = 0; |
| 1014 | } |
| 1015 | |
| 1016 | if (h->sps.chroma_format_idc) { |
| 1017 | chroma_weight_flag = get_bits1(&h->gb); |
| 1018 | if (chroma_weight_flag) { |
| 1019 | int j; |
| 1020 | for (j = 0; j < 2; j++) { |
| 1021 | h->chroma_weight[i][list][j][0] = get_se_golomb(&h->gb); |
| 1022 | h->chroma_weight[i][list][j][1] = get_se_golomb(&h->gb); |
| 1023 | if (h->chroma_weight[i][list][j][0] != chroma_def || |
| 1024 | h->chroma_weight[i][list][j][1] != 0) { |
| 1025 | h->use_weight_chroma = 1; |
| 1026 | h->chroma_weight_flag[list] = 1; |
| 1027 | } |
| 1028 | } |
| 1029 | } else { |
| 1030 | int j; |
| 1031 | for (j = 0; j < 2; j++) { |
| 1032 | h->chroma_weight[i][list][j][0] = chroma_def; |
| 1033 | h->chroma_weight[i][list][j][1] = 0; |
| 1034 | } |
| 1035 | } |
| 1036 | } |
| 1037 | } |
| 1038 | if (h->slice_type_nos != AV_PICTURE_TYPE_B) |
| 1039 | break; |
| 1040 | } |
| 1041 | h->use_weight = h->use_weight || h->use_weight_chroma; |
| 1042 | return 0; |
| 1043 | } |
| 1044 | |
| 1045 | /** |
| 1046 | * instantaneous decoder refresh. |
| 1047 | */ |
| 1048 | static void idr(H264Context *h) |
| 1049 | { |
| 1050 | int i; |
| 1051 | ff_h264_remove_all_refs(h); |
| 1052 | h->prev_frame_num = |
| 1053 | h->prev_frame_num_offset = 0; |
| 1054 | h->prev_poc_msb = 1<<16; |
| 1055 | h->prev_poc_lsb = 0; |
| 1056 | for (i = 0; i < MAX_DELAYED_PIC_COUNT; i++) |
| 1057 | h->last_pocs[i] = INT_MIN; |
| 1058 | } |
| 1059 | |
| 1060 | /* forget old pics after a seek */ |
| 1061 | void ff_h264_flush_change(H264Context *h) |
| 1062 | { |
| 1063 | int i, j; |
| 1064 | |
| 1065 | h->outputed_poc = h->next_outputed_poc = INT_MIN; |
| 1066 | h->prev_interlaced_frame = 1; |
| 1067 | idr(h); |
| 1068 | |
| 1069 | h->prev_frame_num = -1; |
| 1070 | if (h->cur_pic_ptr) { |
| 1071 | h->cur_pic_ptr->reference = 0; |
| 1072 | for (j=i=0; h->delayed_pic[i]; i++) |
| 1073 | if (h->delayed_pic[i] != h->cur_pic_ptr) |
| 1074 | h->delayed_pic[j++] = h->delayed_pic[i]; |
| 1075 | h->delayed_pic[j] = NULL; |
| 1076 | } |
| 1077 | h->first_field = 0; |
| 1078 | memset(h->ref_list[0], 0, sizeof(h->ref_list[0])); |
| 1079 | memset(h->ref_list[1], 0, sizeof(h->ref_list[1])); |
| 1080 | memset(h->default_ref_list[0], 0, sizeof(h->default_ref_list[0])); |
| 1081 | memset(h->default_ref_list[1], 0, sizeof(h->default_ref_list[1])); |
| 1082 | ff_h264_reset_sei(h); |
| 1083 | h->recovery_frame = -1; |
| 1084 | h->frame_recovered = 0; |
| 1085 | h->list_count = 0; |
| 1086 | h->current_slice = 0; |
| 1087 | h->mmco_reset = 1; |
| 1088 | } |
| 1089 | |
| 1090 | /* forget old pics after a seek */ |
| 1091 | static void flush_dpb(AVCodecContext *avctx) |
| 1092 | { |
| 1093 | H264Context *h = avctx->priv_data; |
| 1094 | int i; |
| 1095 | |
| 1096 | for (i = 0; i <= MAX_DELAYED_PIC_COUNT; i++) { |
| 1097 | if (h->delayed_pic[i]) |
| 1098 | h->delayed_pic[i]->reference = 0; |
| 1099 | h->delayed_pic[i] = NULL; |
| 1100 | } |
| 1101 | |
| 1102 | ff_h264_flush_change(h); |
| 1103 | |
| 1104 | if (h->DPB) |
| 1105 | for (i = 0; i < H264_MAX_PICTURE_COUNT; i++) |
| 1106 | ff_h264_unref_picture(h, &h->DPB[i]); |
| 1107 | h->cur_pic_ptr = NULL; |
| 1108 | ff_h264_unref_picture(h, &h->cur_pic); |
| 1109 | |
| 1110 | h->mb_x = h->mb_y = 0; |
| 1111 | |
| 1112 | h->parse_context.state = -1; |
| 1113 | h->parse_context.frame_start_found = 0; |
| 1114 | h->parse_context.overread = 0; |
| 1115 | h->parse_context.overread_index = 0; |
| 1116 | h->parse_context.index = 0; |
| 1117 | h->parse_context.last_index = 0; |
| 1118 | |
| 1119 | ff_h264_free_tables(h, 1); |
| 1120 | h->context_initialized = 0; |
| 1121 | } |
| 1122 | |
| 1123 | int ff_init_poc(H264Context *h, int pic_field_poc[2], int *pic_poc) |
| 1124 | { |
| 1125 | const int max_frame_num = 1 << h->sps.log2_max_frame_num; |
| 1126 | int field_poc[2]; |
| 1127 | |
| 1128 | h->frame_num_offset = h->prev_frame_num_offset; |
| 1129 | if (h->frame_num < h->prev_frame_num) |
| 1130 | h->frame_num_offset += max_frame_num; |
| 1131 | |
| 1132 | if (h->sps.poc_type == 0) { |
| 1133 | const int max_poc_lsb = 1 << h->sps.log2_max_poc_lsb; |
| 1134 | |
| 1135 | if (h->poc_lsb < h->prev_poc_lsb && |
| 1136 | h->prev_poc_lsb - h->poc_lsb >= max_poc_lsb / 2) |
| 1137 | h->poc_msb = h->prev_poc_msb + max_poc_lsb; |
| 1138 | else if (h->poc_lsb > h->prev_poc_lsb && |
| 1139 | h->prev_poc_lsb - h->poc_lsb < -max_poc_lsb / 2) |
| 1140 | h->poc_msb = h->prev_poc_msb - max_poc_lsb; |
| 1141 | else |
| 1142 | h->poc_msb = h->prev_poc_msb; |
| 1143 | field_poc[0] = |
| 1144 | field_poc[1] = h->poc_msb + h->poc_lsb; |
| 1145 | if (h->picture_structure == PICT_FRAME) |
| 1146 | field_poc[1] += h->delta_poc_bottom; |
| 1147 | } else if (h->sps.poc_type == 1) { |
| 1148 | int abs_frame_num, expected_delta_per_poc_cycle, expectedpoc; |
| 1149 | int i; |
| 1150 | |
| 1151 | if (h->sps.poc_cycle_length != 0) |
| 1152 | abs_frame_num = h->frame_num_offset + h->frame_num; |
| 1153 | else |
| 1154 | abs_frame_num = 0; |
| 1155 | |
| 1156 | if (h->nal_ref_idc == 0 && abs_frame_num > 0) |
| 1157 | abs_frame_num--; |
| 1158 | |
| 1159 | expected_delta_per_poc_cycle = 0; |
| 1160 | for (i = 0; i < h->sps.poc_cycle_length; i++) |
| 1161 | // FIXME integrate during sps parse |
| 1162 | expected_delta_per_poc_cycle += h->sps.offset_for_ref_frame[i]; |
| 1163 | |
| 1164 | if (abs_frame_num > 0) { |
| 1165 | int poc_cycle_cnt = (abs_frame_num - 1) / h->sps.poc_cycle_length; |
| 1166 | int frame_num_in_poc_cycle = (abs_frame_num - 1) % h->sps.poc_cycle_length; |
| 1167 | |
| 1168 | expectedpoc = poc_cycle_cnt * expected_delta_per_poc_cycle; |
| 1169 | for (i = 0; i <= frame_num_in_poc_cycle; i++) |
| 1170 | expectedpoc = expectedpoc + h->sps.offset_for_ref_frame[i]; |
| 1171 | } else |
| 1172 | expectedpoc = 0; |
| 1173 | |
| 1174 | if (h->nal_ref_idc == 0) |
| 1175 | expectedpoc = expectedpoc + h->sps.offset_for_non_ref_pic; |
| 1176 | |
| 1177 | field_poc[0] = expectedpoc + h->delta_poc[0]; |
| 1178 | field_poc[1] = field_poc[0] + h->sps.offset_for_top_to_bottom_field; |
| 1179 | |
| 1180 | if (h->picture_structure == PICT_FRAME) |
| 1181 | field_poc[1] += h->delta_poc[1]; |
| 1182 | } else { |
| 1183 | int poc = 2 * (h->frame_num_offset + h->frame_num); |
| 1184 | |
| 1185 | if (!h->nal_ref_idc) |
| 1186 | poc--; |
| 1187 | |
| 1188 | field_poc[0] = poc; |
| 1189 | field_poc[1] = poc; |
| 1190 | } |
| 1191 | |
| 1192 | if (h->picture_structure != PICT_BOTTOM_FIELD) |
| 1193 | pic_field_poc[0] = field_poc[0]; |
| 1194 | if (h->picture_structure != PICT_TOP_FIELD) |
| 1195 | pic_field_poc[1] = field_poc[1]; |
| 1196 | *pic_poc = FFMIN(pic_field_poc[0], pic_field_poc[1]); |
| 1197 | |
| 1198 | return 0; |
| 1199 | } |
| 1200 | |
| 1201 | /** |
| 1202 | * Compute profile from profile_idc and constraint_set?_flags. |
| 1203 | * |
| 1204 | * @param sps SPS |
| 1205 | * |
| 1206 | * @return profile as defined by FF_PROFILE_H264_* |
| 1207 | */ |
| 1208 | int ff_h264_get_profile(SPS *sps) |
| 1209 | { |
| 1210 | int profile = sps->profile_idc; |
| 1211 | |
| 1212 | switch (sps->profile_idc) { |
| 1213 | case FF_PROFILE_H264_BASELINE: |
| 1214 | // constraint_set1_flag set to 1 |
| 1215 | profile |= (sps->constraint_set_flags & 1 << 1) ? FF_PROFILE_H264_CONSTRAINED : 0; |
| 1216 | break; |
| 1217 | case FF_PROFILE_H264_HIGH_10: |
| 1218 | case FF_PROFILE_H264_HIGH_422: |
| 1219 | case FF_PROFILE_H264_HIGH_444_PREDICTIVE: |
| 1220 | // constraint_set3_flag set to 1 |
| 1221 | profile |= (sps->constraint_set_flags & 1 << 3) ? FF_PROFILE_H264_INTRA : 0; |
| 1222 | break; |
| 1223 | } |
| 1224 | |
| 1225 | return profile; |
| 1226 | } |
| 1227 | |
| 1228 | int ff_h264_set_parameter_from_sps(H264Context *h) |
| 1229 | { |
| 1230 | if (h->flags & CODEC_FLAG_LOW_DELAY || |
| 1231 | (h->sps.bitstream_restriction_flag && |
| 1232 | !h->sps.num_reorder_frames)) { |
| 1233 | if (h->avctx->has_b_frames > 1 || h->delayed_pic[0]) |
| 1234 | av_log(h->avctx, AV_LOG_WARNING, "Delayed frames seen. " |
| 1235 | "Reenabling low delay requires a codec flush.\n"); |
| 1236 | else |
| 1237 | h->low_delay = 1; |
| 1238 | } |
| 1239 | |
| 1240 | if (h->avctx->has_b_frames < 2) |
| 1241 | h->avctx->has_b_frames = !h->low_delay; |
| 1242 | |
| 1243 | if (h->avctx->bits_per_raw_sample != h->sps.bit_depth_luma || |
| 1244 | h->cur_chroma_format_idc != h->sps.chroma_format_idc) { |
| 1245 | if (h->avctx->codec && |
| 1246 | h->avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU && |
| 1247 | (h->sps.bit_depth_luma != 8 || h->sps.chroma_format_idc > 1)) { |
| 1248 | av_log(h->avctx, AV_LOG_ERROR, |
| 1249 | "VDPAU decoding does not support video colorspace.\n"); |
| 1250 | return AVERROR_INVALIDDATA; |
| 1251 | } |
| 1252 | if (h->sps.bit_depth_luma >= 8 && h->sps.bit_depth_luma <= 14 && |
| 1253 | h->sps.bit_depth_luma != 11 && h->sps.bit_depth_luma != 13) { |
| 1254 | h->avctx->bits_per_raw_sample = h->sps.bit_depth_luma; |
| 1255 | h->cur_chroma_format_idc = h->sps.chroma_format_idc; |
| 1256 | h->pixel_shift = h->sps.bit_depth_luma > 8; |
| 1257 | |
| 1258 | ff_h264dsp_init(&h->h264dsp, h->sps.bit_depth_luma, |
| 1259 | h->sps.chroma_format_idc); |
| 1260 | ff_h264chroma_init(&h->h264chroma, h->sps.bit_depth_chroma); |
| 1261 | ff_h264qpel_init(&h->h264qpel, h->sps.bit_depth_luma); |
| 1262 | ff_h264_pred_init(&h->hpc, h->avctx->codec_id, h->sps.bit_depth_luma, |
| 1263 | h->sps.chroma_format_idc); |
| 1264 | |
| 1265 | if (CONFIG_ERROR_RESILIENCE) |
| 1266 | ff_me_cmp_init(&h->mecc, h->avctx); |
| 1267 | ff_videodsp_init(&h->vdsp, h->sps.bit_depth_luma); |
| 1268 | } else { |
| 1269 | av_log(h->avctx, AV_LOG_ERROR, "Unsupported bit depth %d\n", |
| 1270 | h->sps.bit_depth_luma); |
| 1271 | return AVERROR_INVALIDDATA; |
| 1272 | } |
| 1273 | } |
| 1274 | return 0; |
| 1275 | } |
| 1276 | |
| 1277 | int ff_set_ref_count(H264Context *h) |
| 1278 | { |
| 1279 | int ref_count[2], list_count; |
| 1280 | int num_ref_idx_active_override_flag; |
| 1281 | |
| 1282 | // set defaults, might be overridden a few lines later |
| 1283 | ref_count[0] = h->pps.ref_count[0]; |
| 1284 | ref_count[1] = h->pps.ref_count[1]; |
| 1285 | |
| 1286 | if (h->slice_type_nos != AV_PICTURE_TYPE_I) { |
| 1287 | unsigned max[2]; |
| 1288 | max[0] = max[1] = h->picture_structure == PICT_FRAME ? 15 : 31; |
| 1289 | |
| 1290 | if (h->slice_type_nos == AV_PICTURE_TYPE_B) |
| 1291 | h->direct_spatial_mv_pred = get_bits1(&h->gb); |
| 1292 | num_ref_idx_active_override_flag = get_bits1(&h->gb); |
| 1293 | |
| 1294 | if (num_ref_idx_active_override_flag) { |
| 1295 | ref_count[0] = get_ue_golomb(&h->gb) + 1; |
| 1296 | if (h->slice_type_nos == AV_PICTURE_TYPE_B) { |
| 1297 | ref_count[1] = get_ue_golomb(&h->gb) + 1; |
| 1298 | } else |
| 1299 | // full range is spec-ok in this case, even for frames |
| 1300 | ref_count[1] = 1; |
| 1301 | } |
| 1302 | |
| 1303 | if (ref_count[0]-1 > max[0] || ref_count[1]-1 > max[1]){ |
| 1304 | av_log(h->avctx, AV_LOG_ERROR, "reference overflow %u > %u or %u > %u\n", ref_count[0]-1, max[0], ref_count[1]-1, max[1]); |
| 1305 | h->ref_count[0] = h->ref_count[1] = 0; |
| 1306 | h->list_count = 0; |
| 1307 | return AVERROR_INVALIDDATA; |
| 1308 | } |
| 1309 | |
| 1310 | if (h->slice_type_nos == AV_PICTURE_TYPE_B) |
| 1311 | list_count = 2; |
| 1312 | else |
| 1313 | list_count = 1; |
| 1314 | } else { |
| 1315 | list_count = 0; |
| 1316 | ref_count[0] = ref_count[1] = 0; |
| 1317 | } |
| 1318 | |
| 1319 | if (list_count != h->list_count || |
| 1320 | ref_count[0] != h->ref_count[0] || |
| 1321 | ref_count[1] != h->ref_count[1]) { |
| 1322 | h->ref_count[0] = ref_count[0]; |
| 1323 | h->ref_count[1] = ref_count[1]; |
| 1324 | h->list_count = list_count; |
| 1325 | return 1; |
| 1326 | } |
| 1327 | |
| 1328 | return 0; |
| 1329 | } |
| 1330 | |
| 1331 | static const uint8_t start_code[] = { 0x00, 0x00, 0x01 }; |
| 1332 | |
| 1333 | static int get_bit_length(H264Context *h, const uint8_t *buf, |
| 1334 | const uint8_t *ptr, int dst_length, |
| 1335 | int i, int next_avc) |
| 1336 | { |
| 1337 | if ((h->workaround_bugs & FF_BUG_AUTODETECT) && i + 3 < next_avc && |
| 1338 | buf[i] == 0x00 && buf[i + 1] == 0x00 && |
| 1339 | buf[i + 2] == 0x01 && buf[i + 3] == 0xE0) |
| 1340 | h->workaround_bugs |= FF_BUG_TRUNCATED; |
| 1341 | |
| 1342 | if (!(h->workaround_bugs & FF_BUG_TRUNCATED)) |
| 1343 | while (dst_length > 0 && ptr[dst_length - 1] == 0) |
| 1344 | dst_length--; |
| 1345 | |
| 1346 | if (!dst_length) |
| 1347 | return 0; |
| 1348 | |
| 1349 | return 8 * dst_length - decode_rbsp_trailing(h, ptr + dst_length - 1); |
| 1350 | } |
| 1351 | |
| 1352 | static int get_last_needed_nal(H264Context *h, const uint8_t *buf, int buf_size) |
| 1353 | { |
| 1354 | int next_avc = h->is_avc ? 0 : buf_size; |
| 1355 | int nal_index = 0; |
| 1356 | int buf_index = 0; |
| 1357 | int nals_needed = 0; |
| 1358 | int first_slice = 0; |
| 1359 | |
| 1360 | while(1) { |
| 1361 | int nalsize = 0; |
| 1362 | int dst_length, bit_length, consumed; |
| 1363 | const uint8_t *ptr; |
| 1364 | |
| 1365 | if (buf_index >= next_avc) { |
| 1366 | nalsize = get_avc_nalsize(h, buf, buf_size, &buf_index); |
| 1367 | if (nalsize < 0) |
| 1368 | break; |
| 1369 | next_avc = buf_index + nalsize; |
| 1370 | } else { |
| 1371 | buf_index = find_start_code(buf, buf_size, buf_index, next_avc); |
| 1372 | if (buf_index >= buf_size) |
| 1373 | break; |
| 1374 | if (buf_index >= next_avc) |
| 1375 | continue; |
| 1376 | } |
| 1377 | |
| 1378 | ptr = ff_h264_decode_nal(h, buf + buf_index, &dst_length, &consumed, |
| 1379 | next_avc - buf_index); |
| 1380 | |
| 1381 | if (!ptr || dst_length < 0) |
| 1382 | return AVERROR_INVALIDDATA; |
| 1383 | |
| 1384 | buf_index += consumed; |
| 1385 | |
| 1386 | bit_length = get_bit_length(h, buf, ptr, dst_length, |
| 1387 | buf_index, next_avc); |
| 1388 | nal_index++; |
| 1389 | |
| 1390 | /* packets can sometimes contain multiple PPS/SPS, |
| 1391 | * e.g. two PAFF field pictures in one packet, or a demuxer |
| 1392 | * which splits NALs strangely if so, when frame threading we |
| 1393 | * can't start the next thread until we've read all of them */ |
| 1394 | switch (h->nal_unit_type) { |
| 1395 | case NAL_SPS: |
| 1396 | case NAL_PPS: |
| 1397 | nals_needed = nal_index; |
| 1398 | break; |
| 1399 | case NAL_DPA: |
| 1400 | case NAL_IDR_SLICE: |
| 1401 | case NAL_SLICE: |
| 1402 | init_get_bits(&h->gb, ptr, bit_length); |
| 1403 | if (!get_ue_golomb(&h->gb) || |
| 1404 | !first_slice || |
| 1405 | first_slice != h->nal_unit_type) |
| 1406 | nals_needed = nal_index; |
| 1407 | if (!first_slice) |
| 1408 | first_slice = h->nal_unit_type; |
| 1409 | } |
| 1410 | } |
| 1411 | |
| 1412 | return nals_needed; |
| 1413 | } |
| 1414 | |
| 1415 | static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size, |
| 1416 | int parse_extradata) |
| 1417 | { |
| 1418 | AVCodecContext *const avctx = h->avctx; |
| 1419 | H264Context *hx; ///< thread context |
| 1420 | int buf_index; |
| 1421 | unsigned context_count; |
| 1422 | int next_avc; |
| 1423 | int nals_needed = 0; ///< number of NALs that need decoding before the next frame thread starts |
| 1424 | int nal_index; |
| 1425 | int idr_cleared=0; |
| 1426 | int ret = 0; |
| 1427 | |
| 1428 | h->nal_unit_type= 0; |
| 1429 | |
| 1430 | if(!h->slice_context_count) |
| 1431 | h->slice_context_count= 1; |
| 1432 | h->max_contexts = h->slice_context_count; |
| 1433 | if (!(avctx->flags2 & CODEC_FLAG2_CHUNKS)) { |
| 1434 | h->current_slice = 0; |
| 1435 | if (!h->first_field) |
| 1436 | h->cur_pic_ptr = NULL; |
| 1437 | ff_h264_reset_sei(h); |
| 1438 | } |
| 1439 | |
| 1440 | if (h->nal_length_size == 4) { |
| 1441 | if (buf_size > 8 && AV_RB32(buf) == 1 && AV_RB32(buf+5) > (unsigned)buf_size) { |
| 1442 | h->is_avc = 0; |
| 1443 | }else if(buf_size > 3 && AV_RB32(buf) > 1 && AV_RB32(buf) <= (unsigned)buf_size) |
| 1444 | h->is_avc = 1; |
| 1445 | } |
| 1446 | |
| 1447 | if (avctx->active_thread_type & FF_THREAD_FRAME) |
| 1448 | nals_needed = get_last_needed_nal(h, buf, buf_size); |
| 1449 | |
| 1450 | { |
| 1451 | buf_index = 0; |
| 1452 | context_count = 0; |
| 1453 | next_avc = h->is_avc ? 0 : buf_size; |
| 1454 | nal_index = 0; |
| 1455 | for (;;) { |
| 1456 | int consumed; |
| 1457 | int dst_length; |
| 1458 | int bit_length; |
| 1459 | const uint8_t *ptr; |
| 1460 | int nalsize = 0; |
| 1461 | int err; |
| 1462 | |
| 1463 | if (buf_index >= next_avc) { |
| 1464 | nalsize = get_avc_nalsize(h, buf, buf_size, &buf_index); |
| 1465 | if (nalsize < 0) |
| 1466 | break; |
| 1467 | next_avc = buf_index + nalsize; |
| 1468 | } else { |
| 1469 | buf_index = find_start_code(buf, buf_size, buf_index, next_avc); |
| 1470 | if (buf_index >= buf_size) |
| 1471 | break; |
| 1472 | if (buf_index >= next_avc) |
| 1473 | continue; |
| 1474 | } |
| 1475 | |
| 1476 | hx = h->thread_context[context_count]; |
| 1477 | |
| 1478 | ptr = ff_h264_decode_nal(hx, buf + buf_index, &dst_length, |
| 1479 | &consumed, next_avc - buf_index); |
| 1480 | if (!ptr || dst_length < 0) { |
| 1481 | ret = -1; |
| 1482 | goto end; |
| 1483 | } |
| 1484 | |
| 1485 | bit_length = get_bit_length(h, buf, ptr, dst_length, |
| 1486 | buf_index + consumed, next_avc); |
| 1487 | |
| 1488 | if (h->avctx->debug & FF_DEBUG_STARTCODE) |
| 1489 | av_log(h->avctx, AV_LOG_DEBUG, |
| 1490 | "NAL %d/%d at %d/%d length %d\n", |
| 1491 | hx->nal_unit_type, hx->nal_ref_idc, buf_index, buf_size, dst_length); |
| 1492 | |
| 1493 | if (h->is_avc && (nalsize != consumed) && nalsize) |
| 1494 | av_log(h->avctx, AV_LOG_DEBUG, |
| 1495 | "AVC: Consumed only %d bytes instead of %d\n", |
| 1496 | consumed, nalsize); |
| 1497 | |
| 1498 | buf_index += consumed; |
| 1499 | nal_index++; |
| 1500 | |
| 1501 | if (avctx->skip_frame >= AVDISCARD_NONREF && |
| 1502 | h->nal_ref_idc == 0 && |
| 1503 | h->nal_unit_type != NAL_SEI) |
| 1504 | continue; |
| 1505 | |
| 1506 | again: |
| 1507 | if ( !(avctx->active_thread_type & FF_THREAD_FRAME) |
| 1508 | || nals_needed >= nal_index) |
| 1509 | h->au_pps_id = -1; |
| 1510 | /* Ignore per frame NAL unit type during extradata |
| 1511 | * parsing. Decoding slices is not possible in codec init |
| 1512 | * with frame-mt */ |
| 1513 | if (parse_extradata) { |
| 1514 | switch (hx->nal_unit_type) { |
| 1515 | case NAL_IDR_SLICE: |
| 1516 | case NAL_SLICE: |
| 1517 | case NAL_DPA: |
| 1518 | case NAL_DPB: |
| 1519 | case NAL_DPC: |
| 1520 | av_log(h->avctx, AV_LOG_WARNING, |
| 1521 | "Ignoring NAL %d in global header/extradata\n", |
| 1522 | hx->nal_unit_type); |
| 1523 | // fall through to next case |
| 1524 | case NAL_AUXILIARY_SLICE: |
| 1525 | hx->nal_unit_type = NAL_FF_IGNORE; |
| 1526 | } |
| 1527 | } |
| 1528 | |
| 1529 | err = 0; |
| 1530 | |
| 1531 | switch (hx->nal_unit_type) { |
| 1532 | case NAL_IDR_SLICE: |
| 1533 | if ((ptr[0] & 0xFC) == 0x98) { |
| 1534 | av_log(h->avctx, AV_LOG_ERROR, "Invalid inter IDR frame\n"); |
| 1535 | h->next_outputed_poc = INT_MIN; |
| 1536 | ret = -1; |
| 1537 | goto end; |
| 1538 | } |
| 1539 | if (h->nal_unit_type != NAL_IDR_SLICE) { |
| 1540 | av_log(h->avctx, AV_LOG_ERROR, |
| 1541 | "Invalid mix of idr and non-idr slices\n"); |
| 1542 | ret = -1; |
| 1543 | goto end; |
| 1544 | } |
| 1545 | if(!idr_cleared) |
| 1546 | idr(h); // FIXME ensure we don't lose some frames if there is reordering |
| 1547 | idr_cleared = 1; |
| 1548 | h->has_recovery_point = 1; |
| 1549 | case NAL_SLICE: |
| 1550 | init_get_bits(&hx->gb, ptr, bit_length); |
| 1551 | hx->intra_gb_ptr = |
| 1552 | hx->inter_gb_ptr = &hx->gb; |
| 1553 | hx->data_partitioning = 0; |
| 1554 | |
| 1555 | if ((err = ff_h264_decode_slice_header(hx, h))) |
| 1556 | break; |
| 1557 | |
| 1558 | if (h->sei_recovery_frame_cnt >= 0) { |
| 1559 | if (h->frame_num != h->sei_recovery_frame_cnt || hx->slice_type_nos != AV_PICTURE_TYPE_I) |
| 1560 | h->valid_recovery_point = 1; |
| 1561 | |
| 1562 | if ( h->recovery_frame < 0 |
| 1563 | || ((h->recovery_frame - h->frame_num) & ((1 << h->sps.log2_max_frame_num)-1)) > h->sei_recovery_frame_cnt) { |
| 1564 | h->recovery_frame = (h->frame_num + h->sei_recovery_frame_cnt) & |
| 1565 | ((1 << h->sps.log2_max_frame_num) - 1); |
| 1566 | |
| 1567 | if (!h->valid_recovery_point) |
| 1568 | h->recovery_frame = h->frame_num; |
| 1569 | } |
| 1570 | } |
| 1571 | |
| 1572 | h->cur_pic_ptr->f.key_frame |= |
| 1573 | (hx->nal_unit_type == NAL_IDR_SLICE); |
| 1574 | |
| 1575 | if (hx->nal_unit_type == NAL_IDR_SLICE || |
| 1576 | h->recovery_frame == h->frame_num) { |
| 1577 | h->recovery_frame = -1; |
| 1578 | h->cur_pic_ptr->recovered = 1; |
| 1579 | } |
| 1580 | // If we have an IDR, all frames after it in decoded order are |
| 1581 | // "recovered". |
| 1582 | if (hx->nal_unit_type == NAL_IDR_SLICE) |
| 1583 | h->frame_recovered |= FRAME_RECOVERED_IDR; |
| 1584 | h->frame_recovered |= 3*!!(avctx->flags2 & CODEC_FLAG2_SHOW_ALL); |
| 1585 | h->frame_recovered |= 3*!!(avctx->flags & CODEC_FLAG_OUTPUT_CORRUPT); |
| 1586 | #if 1 |
| 1587 | h->cur_pic_ptr->recovered |= h->frame_recovered; |
| 1588 | #else |
| 1589 | h->cur_pic_ptr->recovered |= !!(h->frame_recovered & FRAME_RECOVERED_IDR); |
| 1590 | #endif |
| 1591 | |
| 1592 | if (h->current_slice == 1) { |
| 1593 | if (!(avctx->flags2 & CODEC_FLAG2_CHUNKS)) |
| 1594 | decode_postinit(h, nal_index >= nals_needed); |
| 1595 | |
| 1596 | if (h->avctx->hwaccel && |
| 1597 | (ret = h->avctx->hwaccel->start_frame(h->avctx, NULL, 0)) < 0) |
| 1598 | return ret; |
| 1599 | if (CONFIG_H264_VDPAU_DECODER && |
| 1600 | h->avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU) |
| 1601 | ff_vdpau_h264_picture_start(h); |
| 1602 | } |
| 1603 | |
| 1604 | if (hx->redundant_pic_count == 0) { |
| 1605 | if (avctx->hwaccel) { |
| 1606 | ret = avctx->hwaccel->decode_slice(avctx, |
| 1607 | &buf[buf_index - consumed], |
| 1608 | consumed); |
| 1609 | if (ret < 0) |
| 1610 | return ret; |
| 1611 | } else if (CONFIG_H264_VDPAU_DECODER && |
| 1612 | h->avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU) { |
| 1613 | ff_vdpau_add_data_chunk(h->cur_pic_ptr->f.data[0], |
| 1614 | start_code, |
| 1615 | sizeof(start_code)); |
| 1616 | ff_vdpau_add_data_chunk(h->cur_pic_ptr->f.data[0], |
| 1617 | &buf[buf_index - consumed], |
| 1618 | consumed); |
| 1619 | } else |
| 1620 | context_count++; |
| 1621 | } |
| 1622 | break; |
| 1623 | case NAL_DPA: |
| 1624 | if (h->avctx->flags & CODEC_FLAG2_CHUNKS) { |
| 1625 | av_log(h->avctx, AV_LOG_ERROR, |
| 1626 | "Decoding in chunks is not supported for " |
| 1627 | "partitioned slices.\n"); |
| 1628 | return AVERROR(ENOSYS); |
| 1629 | } |
| 1630 | |
| 1631 | init_get_bits(&hx->gb, ptr, bit_length); |
| 1632 | hx->intra_gb_ptr = |
| 1633 | hx->inter_gb_ptr = NULL; |
| 1634 | |
| 1635 | if ((err = ff_h264_decode_slice_header(hx, h))) { |
| 1636 | /* make sure data_partitioning is cleared if it was set |
| 1637 | * before, so we don't try decoding a slice without a valid |
| 1638 | * slice header later */ |
| 1639 | h->data_partitioning = 0; |
| 1640 | break; |
| 1641 | } |
| 1642 | |
| 1643 | hx->data_partitioning = 1; |
| 1644 | break; |
| 1645 | case NAL_DPB: |
| 1646 | init_get_bits(&hx->intra_gb, ptr, bit_length); |
| 1647 | hx->intra_gb_ptr = &hx->intra_gb; |
| 1648 | break; |
| 1649 | case NAL_DPC: |
| 1650 | init_get_bits(&hx->inter_gb, ptr, bit_length); |
| 1651 | hx->inter_gb_ptr = &hx->inter_gb; |
| 1652 | |
| 1653 | av_log(h->avctx, AV_LOG_ERROR, "Partitioned H.264 support is incomplete\n"); |
| 1654 | break; |
| 1655 | |
| 1656 | if (hx->redundant_pic_count == 0 && |
| 1657 | hx->intra_gb_ptr && |
| 1658 | hx->data_partitioning && |
| 1659 | h->cur_pic_ptr && h->context_initialized && |
| 1660 | (avctx->skip_frame < AVDISCARD_NONREF || hx->nal_ref_idc) && |
| 1661 | (avctx->skip_frame < AVDISCARD_BIDIR || |
| 1662 | hx->slice_type_nos != AV_PICTURE_TYPE_B) && |
| 1663 | (avctx->skip_frame < AVDISCARD_NONINTRA || |
| 1664 | hx->slice_type_nos == AV_PICTURE_TYPE_I) && |
| 1665 | avctx->skip_frame < AVDISCARD_ALL) |
| 1666 | context_count++; |
| 1667 | break; |
| 1668 | case NAL_SEI: |
| 1669 | init_get_bits(&h->gb, ptr, bit_length); |
| 1670 | ret = ff_h264_decode_sei(h); |
| 1671 | if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE)) |
| 1672 | goto end; |
| 1673 | break; |
| 1674 | case NAL_SPS: |
| 1675 | init_get_bits(&h->gb, ptr, bit_length); |
| 1676 | if (ff_h264_decode_seq_parameter_set(h) < 0 && (h->is_avc ? nalsize : 1)) { |
| 1677 | av_log(h->avctx, AV_LOG_DEBUG, |
| 1678 | "SPS decoding failure, trying again with the complete NAL\n"); |
| 1679 | if (h->is_avc) |
| 1680 | av_assert0(next_avc - buf_index + consumed == nalsize); |
| 1681 | if ((next_avc - buf_index + consumed - 1) >= INT_MAX/8) |
| 1682 | break; |
| 1683 | init_get_bits(&h->gb, &buf[buf_index + 1 - consumed], |
| 1684 | 8*(next_avc - buf_index + consumed - 1)); |
| 1685 | ff_h264_decode_seq_parameter_set(h); |
| 1686 | } |
| 1687 | |
| 1688 | break; |
| 1689 | case NAL_PPS: |
| 1690 | init_get_bits(&h->gb, ptr, bit_length); |
| 1691 | ret = ff_h264_decode_picture_parameter_set(h, bit_length); |
| 1692 | if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE)) |
| 1693 | goto end; |
| 1694 | break; |
| 1695 | case NAL_AUD: |
| 1696 | case NAL_END_SEQUENCE: |
| 1697 | case NAL_END_STREAM: |
| 1698 | case NAL_FILLER_DATA: |
| 1699 | case NAL_SPS_EXT: |
| 1700 | case NAL_AUXILIARY_SLICE: |
| 1701 | break; |
| 1702 | case NAL_FF_IGNORE: |
| 1703 | break; |
| 1704 | default: |
| 1705 | av_log(avctx, AV_LOG_DEBUG, "Unknown NAL code: %d (%d bits)\n", |
| 1706 | hx->nal_unit_type, bit_length); |
| 1707 | } |
| 1708 | |
| 1709 | if (context_count == h->max_contexts) { |
| 1710 | ret = ff_h264_execute_decode_slices(h, context_count); |
| 1711 | if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE)) |
| 1712 | goto end; |
| 1713 | context_count = 0; |
| 1714 | } |
| 1715 | |
| 1716 | if (err < 0 || err == SLICE_SKIPED) { |
| 1717 | if (err < 0) |
| 1718 | av_log(h->avctx, AV_LOG_ERROR, "decode_slice_header error\n"); |
| 1719 | h->ref_count[0] = h->ref_count[1] = h->list_count = 0; |
| 1720 | } else if (err == SLICE_SINGLETHREAD) { |
| 1721 | /* Slice could not be decoded in parallel mode, copy down |
| 1722 | * NAL unit stuff to context 0 and restart. Note that |
| 1723 | * rbsp_buffer is not transferred, but since we no longer |
| 1724 | * run in parallel mode this should not be an issue. */ |
| 1725 | h->nal_unit_type = hx->nal_unit_type; |
| 1726 | h->nal_ref_idc = hx->nal_ref_idc; |
| 1727 | hx = h; |
| 1728 | goto again; |
| 1729 | } |
| 1730 | } |
| 1731 | } |
| 1732 | if (context_count) { |
| 1733 | ret = ff_h264_execute_decode_slices(h, context_count); |
| 1734 | if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE)) |
| 1735 | goto end; |
| 1736 | } |
| 1737 | |
| 1738 | ret = 0; |
| 1739 | end: |
| 1740 | /* clean up */ |
| 1741 | if (h->cur_pic_ptr && !h->droppable) { |
| 1742 | ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX, |
| 1743 | h->picture_structure == PICT_BOTTOM_FIELD); |
| 1744 | } |
| 1745 | |
| 1746 | return (ret < 0) ? ret : buf_index; |
| 1747 | } |
| 1748 | |
| 1749 | /** |
| 1750 | * Return the number of bytes consumed for building the current frame. |
| 1751 | */ |
| 1752 | static int get_consumed_bytes(int pos, int buf_size) |
| 1753 | { |
| 1754 | if (pos == 0) |
| 1755 | pos = 1; // avoid infinite loops (I doubt that is needed but...) |
| 1756 | if (pos + 10 > buf_size) |
| 1757 | pos = buf_size; // oops ;) |
| 1758 | |
| 1759 | return pos; |
| 1760 | } |
| 1761 | |
| 1762 | static int output_frame(H264Context *h, AVFrame *dst, H264Picture *srcp) |
| 1763 | { |
| 1764 | AVFrame *src = &srcp->f; |
| 1765 | const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(src->format); |
| 1766 | int i; |
| 1767 | int ret = av_frame_ref(dst, src); |
| 1768 | if (ret < 0) |
| 1769 | return ret; |
| 1770 | |
| 1771 | av_dict_set(&dst->metadata, "stereo_mode", ff_h264_sei_stereo_mode(h), 0); |
| 1772 | |
| 1773 | if (srcp->sei_recovery_frame_cnt == 0) |
| 1774 | dst->key_frame = 1; |
| 1775 | if (!srcp->crop) |
| 1776 | return 0; |
| 1777 | |
| 1778 | for (i = 0; i < desc->nb_components; i++) { |
| 1779 | int hshift = (i > 0) ? desc->log2_chroma_w : 0; |
| 1780 | int vshift = (i > 0) ? desc->log2_chroma_h : 0; |
| 1781 | int off = ((srcp->crop_left >> hshift) << h->pixel_shift) + |
| 1782 | (srcp->crop_top >> vshift) * dst->linesize[i]; |
| 1783 | dst->data[i] += off; |
| 1784 | } |
| 1785 | return 0; |
| 1786 | } |
| 1787 | |
| 1788 | static int is_extra(const uint8_t *buf, int buf_size) |
| 1789 | { |
| 1790 | int cnt= buf[5]&0x1f; |
| 1791 | const uint8_t *p= buf+6; |
| 1792 | while(cnt--){ |
| 1793 | int nalsize= AV_RB16(p) + 2; |
| 1794 | if(nalsize > buf_size - (p-buf) || p[2]!=0x67) |
| 1795 | return 0; |
| 1796 | p += nalsize; |
| 1797 | } |
| 1798 | cnt = *(p++); |
| 1799 | if(!cnt) |
| 1800 | return 0; |
| 1801 | while(cnt--){ |
| 1802 | int nalsize= AV_RB16(p) + 2; |
| 1803 | if(nalsize > buf_size - (p-buf) || p[2]!=0x68) |
| 1804 | return 0; |
| 1805 | p += nalsize; |
| 1806 | } |
| 1807 | return 1; |
| 1808 | } |
| 1809 | |
| 1810 | static int h264_decode_frame(AVCodecContext *avctx, void *data, |
| 1811 | int *got_frame, AVPacket *avpkt) |
| 1812 | { |
| 1813 | const uint8_t *buf = avpkt->data; |
| 1814 | int buf_size = avpkt->size; |
| 1815 | H264Context *h = avctx->priv_data; |
| 1816 | AVFrame *pict = data; |
| 1817 | int buf_index = 0; |
| 1818 | H264Picture *out; |
| 1819 | int i, out_idx; |
| 1820 | int ret; |
| 1821 | |
| 1822 | h->flags = avctx->flags; |
| 1823 | /* reset data partitioning here, to ensure GetBitContexts from previous |
| 1824 | * packets do not get used. */ |
| 1825 | h->data_partitioning = 0; |
| 1826 | |
| 1827 | /* end of stream, output what is still in the buffers */ |
| 1828 | if (buf_size == 0) { |
| 1829 | out: |
| 1830 | |
| 1831 | h->cur_pic_ptr = NULL; |
| 1832 | h->first_field = 0; |
| 1833 | |
| 1834 | // FIXME factorize this with the output code below |
| 1835 | out = h->delayed_pic[0]; |
| 1836 | out_idx = 0; |
| 1837 | for (i = 1; |
| 1838 | h->delayed_pic[i] && |
| 1839 | !h->delayed_pic[i]->f.key_frame && |
| 1840 | !h->delayed_pic[i]->mmco_reset; |
| 1841 | i++) |
| 1842 | if (h->delayed_pic[i]->poc < out->poc) { |
| 1843 | out = h->delayed_pic[i]; |
| 1844 | out_idx = i; |
| 1845 | } |
| 1846 | |
| 1847 | for (i = out_idx; h->delayed_pic[i]; i++) |
| 1848 | h->delayed_pic[i] = h->delayed_pic[i + 1]; |
| 1849 | |
| 1850 | if (out) { |
| 1851 | out->reference &= ~DELAYED_PIC_REF; |
| 1852 | ret = output_frame(h, pict, out); |
| 1853 | if (ret < 0) |
| 1854 | return ret; |
| 1855 | *got_frame = 1; |
| 1856 | } |
| 1857 | |
| 1858 | return buf_index; |
| 1859 | } |
| 1860 | if (h->is_avc && av_packet_get_side_data(avpkt, AV_PKT_DATA_NEW_EXTRADATA, NULL)) { |
| 1861 | int side_size; |
| 1862 | uint8_t *side = av_packet_get_side_data(avpkt, AV_PKT_DATA_NEW_EXTRADATA, &side_size); |
| 1863 | if (is_extra(side, side_size)) |
| 1864 | ff_h264_decode_extradata(h, side, side_size); |
| 1865 | } |
| 1866 | if(h->is_avc && buf_size >= 9 && buf[0]==1 && buf[2]==0 && (buf[4]&0xFC)==0xFC && (buf[5]&0x1F) && buf[8]==0x67){ |
| 1867 | if (is_extra(buf, buf_size)) |
| 1868 | return ff_h264_decode_extradata(h, buf, buf_size); |
| 1869 | } |
| 1870 | |
| 1871 | buf_index = decode_nal_units(h, buf, buf_size, 0); |
| 1872 | if (buf_index < 0) |
| 1873 | return AVERROR_INVALIDDATA; |
| 1874 | |
| 1875 | if (!h->cur_pic_ptr && h->nal_unit_type == NAL_END_SEQUENCE) { |
| 1876 | av_assert0(buf_index <= buf_size); |
| 1877 | goto out; |
| 1878 | } |
| 1879 | |
| 1880 | if (!(avctx->flags2 & CODEC_FLAG2_CHUNKS) && !h->cur_pic_ptr) { |
| 1881 | if (avctx->skip_frame >= AVDISCARD_NONREF || |
| 1882 | buf_size >= 4 && !memcmp("Q264", buf, 4)) |
| 1883 | return buf_size; |
| 1884 | av_log(avctx, AV_LOG_ERROR, "no frame!\n"); |
| 1885 | return AVERROR_INVALIDDATA; |
| 1886 | } |
| 1887 | |
| 1888 | if (!(avctx->flags2 & CODEC_FLAG2_CHUNKS) || |
| 1889 | (h->mb_y >= h->mb_height && h->mb_height)) { |
| 1890 | if (avctx->flags2 & CODEC_FLAG2_CHUNKS) |
| 1891 | decode_postinit(h, 1); |
| 1892 | |
| 1893 | ff_h264_field_end(h, 0); |
| 1894 | |
| 1895 | /* Wait for second field. */ |
| 1896 | *got_frame = 0; |
| 1897 | if (h->next_output_pic && ( |
| 1898 | h->next_output_pic->recovered)) { |
| 1899 | if (!h->next_output_pic->recovered) |
| 1900 | h->next_output_pic->f.flags |= AV_FRAME_FLAG_CORRUPT; |
| 1901 | |
| 1902 | ret = output_frame(h, pict, h->next_output_pic); |
| 1903 | if (ret < 0) |
| 1904 | return ret; |
| 1905 | *got_frame = 1; |
| 1906 | if (CONFIG_MPEGVIDEO) { |
| 1907 | ff_print_debug_info2(h->avctx, pict, h->er.mbskip_table, |
| 1908 | h->next_output_pic->mb_type, |
| 1909 | h->next_output_pic->qscale_table, |
| 1910 | h->next_output_pic->motion_val, |
| 1911 | &h->low_delay, |
| 1912 | h->mb_width, h->mb_height, h->mb_stride, 1); |
| 1913 | } |
| 1914 | } |
| 1915 | } |
| 1916 | |
| 1917 | assert(pict->buf[0] || !*got_frame); |
| 1918 | |
| 1919 | return get_consumed_bytes(buf_index, buf_size); |
| 1920 | } |
| 1921 | |
| 1922 | av_cold void ff_h264_free_context(H264Context *h) |
| 1923 | { |
| 1924 | int i; |
| 1925 | |
| 1926 | ff_h264_free_tables(h, 1); // FIXME cleanup init stuff perhaps |
| 1927 | |
| 1928 | for (i = 0; i < MAX_SPS_COUNT; i++) |
| 1929 | av_freep(h->sps_buffers + i); |
| 1930 | |
| 1931 | for (i = 0; i < MAX_PPS_COUNT; i++) |
| 1932 | av_freep(h->pps_buffers + i); |
| 1933 | } |
| 1934 | |
| 1935 | static av_cold int h264_decode_end(AVCodecContext *avctx) |
| 1936 | { |
| 1937 | H264Context *h = avctx->priv_data; |
| 1938 | |
| 1939 | ff_h264_remove_all_refs(h); |
| 1940 | ff_h264_free_context(h); |
| 1941 | |
| 1942 | ff_h264_unref_picture(h, &h->cur_pic); |
| 1943 | |
| 1944 | return 0; |
| 1945 | } |
| 1946 | |
| 1947 | static const AVProfile profiles[] = { |
| 1948 | { FF_PROFILE_H264_BASELINE, "Baseline" }, |
| 1949 | { FF_PROFILE_H264_CONSTRAINED_BASELINE, "Constrained Baseline" }, |
| 1950 | { FF_PROFILE_H264_MAIN, "Main" }, |
| 1951 | { FF_PROFILE_H264_EXTENDED, "Extended" }, |
| 1952 | { FF_PROFILE_H264_HIGH, "High" }, |
| 1953 | { FF_PROFILE_H264_HIGH_10, "High 10" }, |
| 1954 | { FF_PROFILE_H264_HIGH_10_INTRA, "High 10 Intra" }, |
| 1955 | { FF_PROFILE_H264_HIGH_422, "High 4:2:2" }, |
| 1956 | { FF_PROFILE_H264_HIGH_422_INTRA, "High 4:2:2 Intra" }, |
| 1957 | { FF_PROFILE_H264_HIGH_444, "High 4:4:4" }, |
| 1958 | { FF_PROFILE_H264_HIGH_444_PREDICTIVE, "High 4:4:4 Predictive" }, |
| 1959 | { FF_PROFILE_H264_HIGH_444_INTRA, "High 4:4:4 Intra" }, |
| 1960 | { FF_PROFILE_H264_CAVLC_444, "CAVLC 4:4:4" }, |
| 1961 | { FF_PROFILE_UNKNOWN }, |
| 1962 | }; |
| 1963 | |
| 1964 | static const AVOption h264_options[] = { |
| 1965 | {"is_avc", "is avc", offsetof(H264Context, is_avc), FF_OPT_TYPE_INT, {.i64 = 0}, 0, 1, 0}, |
| 1966 | {"nal_length_size", "nal_length_size", offsetof(H264Context, nal_length_size), FF_OPT_TYPE_INT, {.i64 = 0}, 0, 4, 0}, |
| 1967 | {NULL} |
| 1968 | }; |
| 1969 | |
| 1970 | static const AVClass h264_class = { |
| 1971 | .class_name = "H264 Decoder", |
| 1972 | .item_name = av_default_item_name, |
| 1973 | .option = h264_options, |
| 1974 | .version = LIBAVUTIL_VERSION_INT, |
| 1975 | }; |
| 1976 | |
| 1977 | AVCodec ff_h264_decoder = { |
| 1978 | .name = "h264", |
| 1979 | .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"), |
| 1980 | .type = AVMEDIA_TYPE_VIDEO, |
| 1981 | .id = AV_CODEC_ID_H264, |
| 1982 | .priv_data_size = sizeof(H264Context), |
| 1983 | .init = ff_h264_decode_init, |
| 1984 | .close = h264_decode_end, |
| 1985 | .decode = h264_decode_frame, |
| 1986 | .capabilities = /*CODEC_CAP_DRAW_HORIZ_BAND |*/ CODEC_CAP_DR1 | |
| 1987 | CODEC_CAP_DELAY | CODEC_CAP_SLICE_THREADS | |
| 1988 | CODEC_CAP_FRAME_THREADS, |
| 1989 | .flush = flush_dpb, |
| 1990 | .init_thread_copy = ONLY_IF_THREADS_ENABLED(decode_init_thread_copy), |
| 1991 | .update_thread_context = ONLY_IF_THREADS_ENABLED(ff_h264_update_thread_context), |
| 1992 | .profiles = NULL_IF_CONFIG_SMALL(profiles), |
| 1993 | .priv_class = &h264_class, |
| 1994 | }; |
| 1995 | |
| 1996 | #if CONFIG_H264_VDPAU_DECODER |
| 1997 | static const AVClass h264_vdpau_class = { |
| 1998 | .class_name = "H264 VDPAU Decoder", |
| 1999 | .item_name = av_default_item_name, |
| 2000 | .option = h264_options, |
| 2001 | .version = LIBAVUTIL_VERSION_INT, |
| 2002 | }; |
| 2003 | |
| 2004 | AVCodec ff_h264_vdpau_decoder = { |
| 2005 | .name = "h264_vdpau", |
| 2006 | .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (VDPAU acceleration)"), |
| 2007 | .type = AVMEDIA_TYPE_VIDEO, |
| 2008 | .id = AV_CODEC_ID_H264, |
| 2009 | .priv_data_size = sizeof(H264Context), |
| 2010 | .init = ff_h264_decode_init, |
| 2011 | .close = h264_decode_end, |
| 2012 | .decode = h264_decode_frame, |
| 2013 | .capabilities = CODEC_CAP_DR1 | CODEC_CAP_DELAY | CODEC_CAP_HWACCEL_VDPAU, |
| 2014 | .flush = flush_dpb, |
| 2015 | .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_VDPAU_H264, |
| 2016 | AV_PIX_FMT_NONE}, |
| 2017 | .profiles = NULL_IF_CONFIG_SMALL(profiles), |
| 2018 | .priv_class = &h264_vdpau_class, |
| 2019 | }; |
| 2020 | #endif |