| 1 | /* |
| 2 | * FFV1 decoder |
| 3 | * |
| 4 | * Copyright (c) 2003-2013 Michael Niedermayer <michaelni@gmx.at> |
| 5 | * |
| 6 | * This file is part of FFmpeg. |
| 7 | * |
| 8 | * FFmpeg is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU Lesser General Public |
| 10 | * License as published by the Free Software Foundation; either |
| 11 | * version 2.1 of the License, or (at your option) any later version. |
| 12 | * |
| 13 | * FFmpeg is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 16 | * Lesser General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU Lesser General Public |
| 19 | * License along with FFmpeg; if not, write to the Free Software |
| 20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 21 | */ |
| 22 | |
| 23 | /** |
| 24 | * @file |
| 25 | * FF Video Codec 1 (a lossless codec) decoder |
| 26 | */ |
| 27 | |
| 28 | #include "libavutil/avassert.h" |
| 29 | #include "libavutil/crc.h" |
| 30 | #include "libavutil/opt.h" |
| 31 | #include "libavutil/imgutils.h" |
| 32 | #include "libavutil/pixdesc.h" |
| 33 | #include "libavutil/timer.h" |
| 34 | #include "avcodec.h" |
| 35 | #include "internal.h" |
| 36 | #include "get_bits.h" |
| 37 | #include "rangecoder.h" |
| 38 | #include "golomb.h" |
| 39 | #include "mathops.h" |
| 40 | #include "ffv1.h" |
| 41 | |
| 42 | static inline av_flatten int get_symbol_inline(RangeCoder *c, uint8_t *state, |
| 43 | int is_signed) |
| 44 | { |
| 45 | if (get_rac(c, state + 0)) |
| 46 | return 0; |
| 47 | else { |
| 48 | int i, e, a; |
| 49 | e = 0; |
| 50 | while (get_rac(c, state + 1 + FFMIN(e, 9))) // 1..10 |
| 51 | e++; |
| 52 | |
| 53 | a = 1; |
| 54 | for (i = e - 1; i >= 0; i--) |
| 55 | a += a + get_rac(c, state + 22 + FFMIN(i, 9)); // 22..31 |
| 56 | |
| 57 | e = -(is_signed && get_rac(c, state + 11 + FFMIN(e, 10))); // 11..21 |
| 58 | return (a ^ e) - e; |
| 59 | } |
| 60 | } |
| 61 | |
| 62 | static av_noinline int get_symbol(RangeCoder *c, uint8_t *state, int is_signed) |
| 63 | { |
| 64 | return get_symbol_inline(c, state, is_signed); |
| 65 | } |
| 66 | |
| 67 | static inline int get_vlc_symbol(GetBitContext *gb, VlcState *const state, |
| 68 | int bits) |
| 69 | { |
| 70 | int k, i, v, ret; |
| 71 | |
| 72 | i = state->count; |
| 73 | k = 0; |
| 74 | while (i < state->error_sum) { // FIXME: optimize |
| 75 | k++; |
| 76 | i += i; |
| 77 | } |
| 78 | |
| 79 | v = get_sr_golomb(gb, k, 12, bits); |
| 80 | av_dlog(NULL, "v:%d bias:%d error:%d drift:%d count:%d k:%d", |
| 81 | v, state->bias, state->error_sum, state->drift, state->count, k); |
| 82 | |
| 83 | #if 0 // JPEG LS |
| 84 | if (k == 0 && 2 * state->drift <= -state->count) |
| 85 | v ^= (-1); |
| 86 | #else |
| 87 | v ^= ((2 * state->drift + state->count) >> 31); |
| 88 | #endif |
| 89 | |
| 90 | ret = fold(v + state->bias, bits); |
| 91 | |
| 92 | update_vlc_state(state, v); |
| 93 | |
| 94 | return ret; |
| 95 | } |
| 96 | |
| 97 | static av_always_inline void decode_line(FFV1Context *s, int w, |
| 98 | int16_t *sample[2], |
| 99 | int plane_index, int bits) |
| 100 | { |
| 101 | PlaneContext *const p = &s->plane[plane_index]; |
| 102 | RangeCoder *const c = &s->c; |
| 103 | int x; |
| 104 | int run_count = 0; |
| 105 | int run_mode = 0; |
| 106 | int run_index = s->run_index; |
| 107 | |
| 108 | if (s->slice_coding_mode == 1) { |
| 109 | int i; |
| 110 | for (x = 0; x < w; x++) { |
| 111 | int v = 0; |
| 112 | for (i=0; i<bits; i++) { |
| 113 | uint8_t state = 128; |
| 114 | v += v + get_rac(c, &state); |
| 115 | } |
| 116 | sample[1][x] = v; |
| 117 | } |
| 118 | return; |
| 119 | } |
| 120 | |
| 121 | for (x = 0; x < w; x++) { |
| 122 | int diff, context, sign; |
| 123 | |
| 124 | context = get_context(p, sample[1] + x, sample[0] + x, sample[1] + x); |
| 125 | if (context < 0) { |
| 126 | context = -context; |
| 127 | sign = 1; |
| 128 | } else |
| 129 | sign = 0; |
| 130 | |
| 131 | av_assert2(context < p->context_count); |
| 132 | |
| 133 | if (s->ac) { |
| 134 | diff = get_symbol_inline(c, p->state[context], 1); |
| 135 | } else { |
| 136 | if (context == 0 && run_mode == 0) |
| 137 | run_mode = 1; |
| 138 | |
| 139 | if (run_mode) { |
| 140 | if (run_count == 0 && run_mode == 1) { |
| 141 | if (get_bits1(&s->gb)) { |
| 142 | run_count = 1 << ff_log2_run[run_index]; |
| 143 | if (x + run_count <= w) |
| 144 | run_index++; |
| 145 | } else { |
| 146 | if (ff_log2_run[run_index]) |
| 147 | run_count = get_bits(&s->gb, ff_log2_run[run_index]); |
| 148 | else |
| 149 | run_count = 0; |
| 150 | if (run_index) |
| 151 | run_index--; |
| 152 | run_mode = 2; |
| 153 | } |
| 154 | } |
| 155 | run_count--; |
| 156 | if (run_count < 0) { |
| 157 | run_mode = 0; |
| 158 | run_count = 0; |
| 159 | diff = get_vlc_symbol(&s->gb, &p->vlc_state[context], |
| 160 | bits); |
| 161 | if (diff >= 0) |
| 162 | diff++; |
| 163 | } else |
| 164 | diff = 0; |
| 165 | } else |
| 166 | diff = get_vlc_symbol(&s->gb, &p->vlc_state[context], bits); |
| 167 | |
| 168 | av_dlog(s->avctx, "count:%d index:%d, mode:%d, x:%d pos:%d\n", |
| 169 | run_count, run_index, run_mode, x, get_bits_count(&s->gb)); |
| 170 | } |
| 171 | |
| 172 | if (sign) |
| 173 | diff = -diff; |
| 174 | |
| 175 | sample[1][x] = (predict(sample[1] + x, sample[0] + x) + diff) & |
| 176 | ((1 << bits) - 1); |
| 177 | } |
| 178 | s->run_index = run_index; |
| 179 | } |
| 180 | |
| 181 | static void decode_plane(FFV1Context *s, uint8_t *src, |
| 182 | int w, int h, int stride, int plane_index) |
| 183 | { |
| 184 | int x, y; |
| 185 | int16_t *sample[2]; |
| 186 | sample[0] = s->sample_buffer + 3; |
| 187 | sample[1] = s->sample_buffer + w + 6 + 3; |
| 188 | |
| 189 | s->run_index = 0; |
| 190 | |
| 191 | memset(s->sample_buffer, 0, 2 * (w + 6) * sizeof(*s->sample_buffer)); |
| 192 | |
| 193 | for (y = 0; y < h; y++) { |
| 194 | int16_t *temp = sample[0]; // FIXME: try a normal buffer |
| 195 | |
| 196 | sample[0] = sample[1]; |
| 197 | sample[1] = temp; |
| 198 | |
| 199 | sample[1][-1] = sample[0][0]; |
| 200 | sample[0][w] = sample[0][w - 1]; |
| 201 | |
| 202 | // { START_TIMER |
| 203 | if (s->avctx->bits_per_raw_sample <= 8) { |
| 204 | decode_line(s, w, sample, plane_index, 8); |
| 205 | for (x = 0; x < w; x++) |
| 206 | src[x + stride * y] = sample[1][x]; |
| 207 | } else { |
| 208 | decode_line(s, w, sample, plane_index, s->avctx->bits_per_raw_sample); |
| 209 | if (s->packed_at_lsb) { |
| 210 | for (x = 0; x < w; x++) { |
| 211 | ((uint16_t*)(src + stride*y))[x] = sample[1][x]; |
| 212 | } |
| 213 | } else { |
| 214 | for (x = 0; x < w; x++) { |
| 215 | ((uint16_t*)(src + stride*y))[x] = sample[1][x] << (16 - s->avctx->bits_per_raw_sample); |
| 216 | } |
| 217 | } |
| 218 | } |
| 219 | // STOP_TIMER("decode-line") } |
| 220 | } |
| 221 | } |
| 222 | |
| 223 | static void decode_rgb_frame(FFV1Context *s, uint8_t *src[3], int w, int h, int stride[3]) |
| 224 | { |
| 225 | int x, y, p; |
| 226 | int16_t *sample[4][2]; |
| 227 | int lbd = s->avctx->bits_per_raw_sample <= 8; |
| 228 | int bits = s->avctx->bits_per_raw_sample > 0 ? s->avctx->bits_per_raw_sample : 8; |
| 229 | int offset = 1 << bits; |
| 230 | |
| 231 | for (x = 0; x < 4; x++) { |
| 232 | sample[x][0] = s->sample_buffer + x * 2 * (w + 6) + 3; |
| 233 | sample[x][1] = s->sample_buffer + (x * 2 + 1) * (w + 6) + 3; |
| 234 | } |
| 235 | |
| 236 | s->run_index = 0; |
| 237 | |
| 238 | memset(s->sample_buffer, 0, 8 * (w + 6) * sizeof(*s->sample_buffer)); |
| 239 | |
| 240 | for (y = 0; y < h; y++) { |
| 241 | for (p = 0; p < 3 + s->transparency; p++) { |
| 242 | int16_t *temp = sample[p][0]; // FIXME: try a normal buffer |
| 243 | |
| 244 | sample[p][0] = sample[p][1]; |
| 245 | sample[p][1] = temp; |
| 246 | |
| 247 | sample[p][1][-1]= sample[p][0][0 ]; |
| 248 | sample[p][0][ w]= sample[p][0][w-1]; |
| 249 | if (lbd && s->slice_coding_mode == 0) |
| 250 | decode_line(s, w, sample[p], (p + 1)/2, 9); |
| 251 | else |
| 252 | decode_line(s, w, sample[p], (p + 1)/2, bits + (s->slice_coding_mode != 1)); |
| 253 | } |
| 254 | for (x = 0; x < w; x++) { |
| 255 | int g = sample[0][1][x]; |
| 256 | int b = sample[1][1][x]; |
| 257 | int r = sample[2][1][x]; |
| 258 | int a = sample[3][1][x]; |
| 259 | |
| 260 | if (s->slice_coding_mode != 1) { |
| 261 | b -= offset; |
| 262 | r -= offset; |
| 263 | g -= (b * s->slice_rct_by_coef + r * s->slice_rct_ry_coef) >> 2; |
| 264 | b += g; |
| 265 | r += g; |
| 266 | } |
| 267 | |
| 268 | if (lbd) |
| 269 | *((uint32_t*)(src[0] + x*4 + stride[0]*y)) = b + (g<<8) + (r<<16) + (a<<24); |
| 270 | else { |
| 271 | *((uint16_t*)(src[0] + x*2 + stride[0]*y)) = b; |
| 272 | *((uint16_t*)(src[1] + x*2 + stride[1]*y)) = g; |
| 273 | *((uint16_t*)(src[2] + x*2 + stride[2]*y)) = r; |
| 274 | } |
| 275 | } |
| 276 | } |
| 277 | } |
| 278 | |
| 279 | static int decode_slice_header(FFV1Context *f, FFV1Context *fs) |
| 280 | { |
| 281 | RangeCoder *c = &fs->c; |
| 282 | uint8_t state[CONTEXT_SIZE]; |
| 283 | unsigned ps, i, context_count; |
| 284 | memset(state, 128, sizeof(state)); |
| 285 | |
| 286 | av_assert0(f->version > 2); |
| 287 | |
| 288 | fs->slice_x = get_symbol(c, state, 0) * f->width ; |
| 289 | fs->slice_y = get_symbol(c, state, 0) * f->height; |
| 290 | fs->slice_width = (get_symbol(c, state, 0) + 1) * f->width + fs->slice_x; |
| 291 | fs->slice_height = (get_symbol(c, state, 0) + 1) * f->height + fs->slice_y; |
| 292 | |
| 293 | fs->slice_x /= f->num_h_slices; |
| 294 | fs->slice_y /= f->num_v_slices; |
| 295 | fs->slice_width = fs->slice_width /f->num_h_slices - fs->slice_x; |
| 296 | fs->slice_height = fs->slice_height/f->num_v_slices - fs->slice_y; |
| 297 | if ((unsigned)fs->slice_width > f->width || (unsigned)fs->slice_height > f->height) |
| 298 | return -1; |
| 299 | if ( (unsigned)fs->slice_x + (uint64_t)fs->slice_width > f->width |
| 300 | || (unsigned)fs->slice_y + (uint64_t)fs->slice_height > f->height) |
| 301 | return -1; |
| 302 | |
| 303 | for (i = 0; i < f->plane_count; i++) { |
| 304 | PlaneContext * const p = &fs->plane[i]; |
| 305 | int idx = get_symbol(c, state, 0); |
| 306 | if (idx > (unsigned)f->quant_table_count) { |
| 307 | av_log(f->avctx, AV_LOG_ERROR, "quant_table_index out of range\n"); |
| 308 | return -1; |
| 309 | } |
| 310 | p->quant_table_index = idx; |
| 311 | memcpy(p->quant_table, f->quant_tables[idx], sizeof(p->quant_table)); |
| 312 | context_count = f->context_count[idx]; |
| 313 | |
| 314 | if (p->context_count < context_count) { |
| 315 | av_freep(&p->state); |
| 316 | av_freep(&p->vlc_state); |
| 317 | } |
| 318 | p->context_count = context_count; |
| 319 | } |
| 320 | |
| 321 | ps = get_symbol(c, state, 0); |
| 322 | if (ps == 1) { |
| 323 | f->cur->interlaced_frame = 1; |
| 324 | f->cur->top_field_first = 1; |
| 325 | } else if (ps == 2) { |
| 326 | f->cur->interlaced_frame = 1; |
| 327 | f->cur->top_field_first = 0; |
| 328 | } else if (ps == 3) { |
| 329 | f->cur->interlaced_frame = 0; |
| 330 | } |
| 331 | f->cur->sample_aspect_ratio.num = get_symbol(c, state, 0); |
| 332 | f->cur->sample_aspect_ratio.den = get_symbol(c, state, 0); |
| 333 | |
| 334 | if (av_image_check_sar(f->width, f->height, |
| 335 | f->cur->sample_aspect_ratio) < 0) { |
| 336 | av_log(f->avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n", |
| 337 | f->cur->sample_aspect_ratio.num, |
| 338 | f->cur->sample_aspect_ratio.den); |
| 339 | f->cur->sample_aspect_ratio = (AVRational){ 0, 1 }; |
| 340 | } |
| 341 | |
| 342 | if (fs->version > 3) { |
| 343 | fs->slice_reset_contexts = get_rac(c, state); |
| 344 | fs->slice_coding_mode = get_symbol(c, state, 0); |
| 345 | if (fs->slice_coding_mode != 1) { |
| 346 | fs->slice_rct_by_coef = get_symbol(c, state, 0); |
| 347 | fs->slice_rct_ry_coef = get_symbol(c, state, 0); |
| 348 | if ((uint64_t)fs->slice_rct_by_coef + (uint64_t)fs->slice_rct_ry_coef > 4) { |
| 349 | av_log(f->avctx, AV_LOG_ERROR, "slice_rct_y_coef out of range\n"); |
| 350 | return AVERROR_INVALIDDATA; |
| 351 | } |
| 352 | } |
| 353 | } |
| 354 | |
| 355 | return 0; |
| 356 | } |
| 357 | |
| 358 | static int decode_slice(AVCodecContext *c, void *arg) |
| 359 | { |
| 360 | FFV1Context *fs = *(void **)arg; |
| 361 | FFV1Context *f = fs->avctx->priv_data; |
| 362 | int width, height, x, y, ret; |
| 363 | const int ps = av_pix_fmt_desc_get(c->pix_fmt)->comp[0].step_minus1 + 1; |
| 364 | AVFrame * const p = f->cur; |
| 365 | int i, si; |
| 366 | |
| 367 | for( si=0; fs != f->slice_context[si]; si ++) |
| 368 | ; |
| 369 | |
| 370 | if(f->fsrc && !p->key_frame) |
| 371 | ff_thread_await_progress(&f->last_picture, si, 0); |
| 372 | |
| 373 | if(f->fsrc && !p->key_frame) { |
| 374 | FFV1Context *fssrc = f->fsrc->slice_context[si]; |
| 375 | FFV1Context *fsdst = f->slice_context[si]; |
| 376 | av_assert1(fsdst->plane_count == fssrc->plane_count); |
| 377 | av_assert1(fsdst == fs); |
| 378 | |
| 379 | if (!p->key_frame) |
| 380 | fsdst->slice_damaged |= fssrc->slice_damaged; |
| 381 | |
| 382 | for (i = 0; i < f->plane_count; i++) { |
| 383 | PlaneContext *psrc = &fssrc->plane[i]; |
| 384 | PlaneContext *pdst = &fsdst->plane[i]; |
| 385 | |
| 386 | av_free(pdst->state); |
| 387 | av_free(pdst->vlc_state); |
| 388 | memcpy(pdst, psrc, sizeof(*pdst)); |
| 389 | pdst->state = NULL; |
| 390 | pdst->vlc_state = NULL; |
| 391 | |
| 392 | if (fssrc->ac) { |
| 393 | pdst->state = av_malloc_array(CONTEXT_SIZE, psrc->context_count); |
| 394 | memcpy(pdst->state, psrc->state, CONTEXT_SIZE * psrc->context_count); |
| 395 | } else { |
| 396 | pdst->vlc_state = av_malloc_array(sizeof(*pdst->vlc_state), psrc->context_count); |
| 397 | memcpy(pdst->vlc_state, psrc->vlc_state, sizeof(*pdst->vlc_state) * psrc->context_count); |
| 398 | } |
| 399 | } |
| 400 | } |
| 401 | |
| 402 | fs->slice_rct_by_coef = 1; |
| 403 | fs->slice_rct_ry_coef = 1; |
| 404 | |
| 405 | if (f->version > 2) { |
| 406 | if (ffv1_init_slice_state(f, fs) < 0) |
| 407 | return AVERROR(ENOMEM); |
| 408 | if (decode_slice_header(f, fs) < 0) { |
| 409 | fs->slice_damaged = 1; |
| 410 | return AVERROR_INVALIDDATA; |
| 411 | } |
| 412 | } |
| 413 | if ((ret = ffv1_init_slice_state(f, fs)) < 0) |
| 414 | return ret; |
| 415 | if (f->cur->key_frame || fs->slice_reset_contexts) |
| 416 | ffv1_clear_slice_state(f, fs); |
| 417 | |
| 418 | width = fs->slice_width; |
| 419 | height = fs->slice_height; |
| 420 | x = fs->slice_x; |
| 421 | y = fs->slice_y; |
| 422 | |
| 423 | if (!fs->ac) { |
| 424 | if (f->version == 3 && f->micro_version > 1 || f->version > 3) |
| 425 | get_rac(&fs->c, (uint8_t[]) { 129 }); |
| 426 | fs->ac_byte_count = f->version > 2 || (!x && !y) ? fs->c.bytestream - fs->c.bytestream_start - 1 : 0; |
| 427 | init_get_bits(&fs->gb, |
| 428 | fs->c.bytestream_start + fs->ac_byte_count, |
| 429 | (fs->c.bytestream_end - fs->c.bytestream_start - fs->ac_byte_count) * 8); |
| 430 | } |
| 431 | |
| 432 | av_assert1(width && height); |
| 433 | if (f->colorspace == 0) { |
| 434 | const int chroma_width = FF_CEIL_RSHIFT(width, f->chroma_h_shift); |
| 435 | const int chroma_height = FF_CEIL_RSHIFT(height, f->chroma_v_shift); |
| 436 | const int cx = x >> f->chroma_h_shift; |
| 437 | const int cy = y >> f->chroma_v_shift; |
| 438 | decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0], width, height, p->linesize[0], 0); |
| 439 | |
| 440 | if (f->chroma_planes) { |
| 441 | decode_plane(fs, p->data[1] + ps*cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1); |
| 442 | decode_plane(fs, p->data[2] + ps*cx+cy*p->linesize[2], chroma_width, chroma_height, p->linesize[2], 1); |
| 443 | } |
| 444 | if (fs->transparency) |
| 445 | decode_plane(fs, p->data[3] + ps*x + y*p->linesize[3], width, height, p->linesize[3], 2); |
| 446 | } else { |
| 447 | uint8_t *planes[3] = { p->data[0] + ps * x + y * p->linesize[0], |
| 448 | p->data[1] + ps * x + y * p->linesize[1], |
| 449 | p->data[2] + ps * x + y * p->linesize[2] }; |
| 450 | decode_rgb_frame(fs, planes, width, height, p->linesize); |
| 451 | } |
| 452 | if (fs->ac && f->version > 2) { |
| 453 | int v; |
| 454 | get_rac(&fs->c, (uint8_t[]) { 129 }); |
| 455 | v = fs->c.bytestream_end - fs->c.bytestream - 2 - 5*f->ec; |
| 456 | if (v) { |
| 457 | av_log(f->avctx, AV_LOG_ERROR, "bytestream end mismatching by %d\n", v); |
| 458 | fs->slice_damaged = 1; |
| 459 | } |
| 460 | } |
| 461 | |
| 462 | emms_c(); |
| 463 | |
| 464 | ff_thread_report_progress(&f->picture, si, 0); |
| 465 | |
| 466 | return 0; |
| 467 | } |
| 468 | |
| 469 | static int read_quant_table(RangeCoder *c, int16_t *quant_table, int scale) |
| 470 | { |
| 471 | int v; |
| 472 | int i = 0; |
| 473 | uint8_t state[CONTEXT_SIZE]; |
| 474 | |
| 475 | memset(state, 128, sizeof(state)); |
| 476 | |
| 477 | for (v = 0; i < 128; v++) { |
| 478 | unsigned len = get_symbol(c, state, 0) + 1; |
| 479 | |
| 480 | if (len > 128 - i) |
| 481 | return AVERROR_INVALIDDATA; |
| 482 | |
| 483 | while (len--) { |
| 484 | quant_table[i] = scale * v; |
| 485 | i++; |
| 486 | } |
| 487 | } |
| 488 | |
| 489 | for (i = 1; i < 128; i++) |
| 490 | quant_table[256 - i] = -quant_table[i]; |
| 491 | quant_table[128] = -quant_table[127]; |
| 492 | |
| 493 | return 2 * v - 1; |
| 494 | } |
| 495 | |
| 496 | static int read_quant_tables(RangeCoder *c, |
| 497 | int16_t quant_table[MAX_CONTEXT_INPUTS][256]) |
| 498 | { |
| 499 | int i; |
| 500 | int context_count = 1; |
| 501 | |
| 502 | for (i = 0; i < 5; i++) { |
| 503 | context_count *= read_quant_table(c, quant_table[i], context_count); |
| 504 | if (context_count > 32768U) { |
| 505 | return AVERROR_INVALIDDATA; |
| 506 | } |
| 507 | } |
| 508 | return (context_count + 1) / 2; |
| 509 | } |
| 510 | |
| 511 | static int read_extra_header(FFV1Context *f) |
| 512 | { |
| 513 | RangeCoder *const c = &f->c; |
| 514 | uint8_t state[CONTEXT_SIZE]; |
| 515 | int i, j, k, ret; |
| 516 | uint8_t state2[32][CONTEXT_SIZE]; |
| 517 | |
| 518 | memset(state2, 128, sizeof(state2)); |
| 519 | memset(state, 128, sizeof(state)); |
| 520 | |
| 521 | ff_init_range_decoder(c, f->avctx->extradata, f->avctx->extradata_size); |
| 522 | ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8); |
| 523 | |
| 524 | f->version = get_symbol(c, state, 0); |
| 525 | if (f->version < 2) { |
| 526 | av_log(f->avctx, AV_LOG_ERROR, "Invalid version in global header\n"); |
| 527 | return AVERROR_INVALIDDATA; |
| 528 | } |
| 529 | if (f->version > 2) { |
| 530 | c->bytestream_end -= 4; |
| 531 | f->micro_version = get_symbol(c, state, 0); |
| 532 | } |
| 533 | f->ac = f->avctx->coder_type = get_symbol(c, state, 0); |
| 534 | if (f->ac > 1) { |
| 535 | for (i = 1; i < 256; i++) |
| 536 | f->state_transition[i] = get_symbol(c, state, 1) + c->one_state[i]; |
| 537 | } |
| 538 | |
| 539 | f->colorspace = get_symbol(c, state, 0); //YUV cs type |
| 540 | f->avctx->bits_per_raw_sample = get_symbol(c, state, 0); |
| 541 | f->chroma_planes = get_rac(c, state); |
| 542 | f->chroma_h_shift = get_symbol(c, state, 0); |
| 543 | f->chroma_v_shift = get_symbol(c, state, 0); |
| 544 | f->transparency = get_rac(c, state); |
| 545 | f->plane_count = 1 + (f->chroma_planes || f->version<4) + f->transparency; |
| 546 | f->num_h_slices = 1 + get_symbol(c, state, 0); |
| 547 | f->num_v_slices = 1 + get_symbol(c, state, 0); |
| 548 | |
| 549 | if (f->num_h_slices > (unsigned)f->width || !f->num_h_slices || |
| 550 | f->num_v_slices > (unsigned)f->height || !f->num_v_slices |
| 551 | ) { |
| 552 | av_log(f->avctx, AV_LOG_ERROR, "slice count invalid\n"); |
| 553 | return AVERROR_INVALIDDATA; |
| 554 | } |
| 555 | |
| 556 | f->quant_table_count = get_symbol(c, state, 0); |
| 557 | if (f->quant_table_count > (unsigned)MAX_QUANT_TABLES) |
| 558 | return AVERROR_INVALIDDATA; |
| 559 | |
| 560 | for (i = 0; i < f->quant_table_count; i++) { |
| 561 | f->context_count[i] = read_quant_tables(c, f->quant_tables[i]); |
| 562 | if (f->context_count[i] < 0) { |
| 563 | av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n"); |
| 564 | return AVERROR_INVALIDDATA; |
| 565 | } |
| 566 | } |
| 567 | if ((ret = ffv1_allocate_initial_states(f)) < 0) |
| 568 | return ret; |
| 569 | |
| 570 | for (i = 0; i < f->quant_table_count; i++) |
| 571 | if (get_rac(c, state)) { |
| 572 | for (j = 0; j < f->context_count[i]; j++) |
| 573 | for (k = 0; k < CONTEXT_SIZE; k++) { |
| 574 | int pred = j ? f->initial_states[i][j - 1][k] : 128; |
| 575 | f->initial_states[i][j][k] = |
| 576 | (pred + get_symbol(c, state2[k], 1)) & 0xFF; |
| 577 | } |
| 578 | } |
| 579 | |
| 580 | if (f->version > 2) { |
| 581 | f->ec = get_symbol(c, state, 0); |
| 582 | if (f->micro_version > 2) |
| 583 | f->intra = get_symbol(c, state, 0); |
| 584 | } |
| 585 | |
| 586 | if (f->version > 2) { |
| 587 | unsigned v; |
| 588 | v = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, |
| 589 | f->avctx->extradata, f->avctx->extradata_size); |
| 590 | if (v) { |
| 591 | av_log(f->avctx, AV_LOG_ERROR, "CRC mismatch %X!\n", v); |
| 592 | return AVERROR_INVALIDDATA; |
| 593 | } |
| 594 | } |
| 595 | |
| 596 | if (f->avctx->debug & FF_DEBUG_PICT_INFO) |
| 597 | av_log(f->avctx, AV_LOG_DEBUG, |
| 598 | "global: ver:%d.%d, coder:%d, colorspace: %d bpr:%d chroma:%d(%d:%d), alpha:%d slices:%dx%d qtabs:%d ec:%d intra:%d\n", |
| 599 | f->version, f->micro_version, |
| 600 | f->ac, |
| 601 | f->colorspace, |
| 602 | f->avctx->bits_per_raw_sample, |
| 603 | f->chroma_planes, f->chroma_h_shift, f->chroma_v_shift, |
| 604 | f->transparency, |
| 605 | f->num_h_slices, f->num_v_slices, |
| 606 | f->quant_table_count, |
| 607 | f->ec, |
| 608 | f->intra |
| 609 | ); |
| 610 | return 0; |
| 611 | } |
| 612 | |
| 613 | static int read_header(FFV1Context *f) |
| 614 | { |
| 615 | uint8_t state[CONTEXT_SIZE]; |
| 616 | int i, j, context_count = -1; //-1 to avoid warning |
| 617 | RangeCoder *const c = &f->slice_context[0]->c; |
| 618 | |
| 619 | memset(state, 128, sizeof(state)); |
| 620 | |
| 621 | if (f->version < 2) { |
| 622 | int chroma_planes, chroma_h_shift, chroma_v_shift, transparency, colorspace, bits_per_raw_sample; |
| 623 | unsigned v= get_symbol(c, state, 0); |
| 624 | if (v >= 2) { |
| 625 | av_log(f->avctx, AV_LOG_ERROR, "invalid version %d in ver01 header\n", v); |
| 626 | return AVERROR_INVALIDDATA; |
| 627 | } |
| 628 | f->version = v; |
| 629 | f->ac = f->avctx->coder_type = get_symbol(c, state, 0); |
| 630 | if (f->ac > 1) { |
| 631 | for (i = 1; i < 256; i++) |
| 632 | f->state_transition[i] = get_symbol(c, state, 1) + c->one_state[i]; |
| 633 | } |
| 634 | |
| 635 | colorspace = get_symbol(c, state, 0); //YUV cs type |
| 636 | bits_per_raw_sample = f->version > 0 ? get_symbol(c, state, 0) : f->avctx->bits_per_raw_sample; |
| 637 | chroma_planes = get_rac(c, state); |
| 638 | chroma_h_shift = get_symbol(c, state, 0); |
| 639 | chroma_v_shift = get_symbol(c, state, 0); |
| 640 | transparency = get_rac(c, state); |
| 641 | |
| 642 | if (f->plane_count) { |
| 643 | if (colorspace != f->colorspace || |
| 644 | bits_per_raw_sample != f->avctx->bits_per_raw_sample || |
| 645 | chroma_planes != f->chroma_planes || |
| 646 | chroma_h_shift != f->chroma_h_shift || |
| 647 | chroma_v_shift != f->chroma_v_shift || |
| 648 | transparency != f->transparency) { |
| 649 | av_log(f->avctx, AV_LOG_ERROR, "Invalid change of global parameters\n"); |
| 650 | return AVERROR_INVALIDDATA; |
| 651 | } |
| 652 | } |
| 653 | |
| 654 | f->colorspace = colorspace; |
| 655 | f->avctx->bits_per_raw_sample = bits_per_raw_sample; |
| 656 | f->chroma_planes = chroma_planes; |
| 657 | f->chroma_h_shift = chroma_h_shift; |
| 658 | f->chroma_v_shift = chroma_v_shift; |
| 659 | f->transparency = transparency; |
| 660 | |
| 661 | f->plane_count = 2 + f->transparency; |
| 662 | } |
| 663 | |
| 664 | if (f->colorspace == 0) { |
| 665 | if (f->avctx->skip_alpha) f->transparency = 0; |
| 666 | if (!f->transparency && !f->chroma_planes) { |
| 667 | if (f->avctx->bits_per_raw_sample <= 8) |
| 668 | f->avctx->pix_fmt = AV_PIX_FMT_GRAY8; |
| 669 | else |
| 670 | f->avctx->pix_fmt = AV_PIX_FMT_GRAY16; |
| 671 | } else if (f->avctx->bits_per_raw_sample<=8 && !f->transparency) { |
| 672 | switch(16 * f->chroma_h_shift + f->chroma_v_shift) { |
| 673 | case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P; break; |
| 674 | case 0x01: f->avctx->pix_fmt = AV_PIX_FMT_YUV440P; break; |
| 675 | case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P; break; |
| 676 | case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P; break; |
| 677 | case 0x20: f->avctx->pix_fmt = AV_PIX_FMT_YUV411P; break; |
| 678 | case 0x22: f->avctx->pix_fmt = AV_PIX_FMT_YUV410P; break; |
| 679 | } |
| 680 | } else if (f->avctx->bits_per_raw_sample <= 8 && f->transparency) { |
| 681 | switch(16*f->chroma_h_shift + f->chroma_v_shift) { |
| 682 | case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P; break; |
| 683 | case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P; break; |
| 684 | case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P; break; |
| 685 | } |
| 686 | } else if (f->avctx->bits_per_raw_sample == 9 && !f->transparency) { |
| 687 | f->packed_at_lsb = 1; |
| 688 | switch(16 * f->chroma_h_shift + f->chroma_v_shift) { |
| 689 | case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P9; break; |
| 690 | case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P9; break; |
| 691 | case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P9; break; |
| 692 | } |
| 693 | } else if (f->avctx->bits_per_raw_sample == 9 && f->transparency) { |
| 694 | f->packed_at_lsb = 1; |
| 695 | switch(16 * f->chroma_h_shift + f->chroma_v_shift) { |
| 696 | case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P9; break; |
| 697 | case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P9; break; |
| 698 | case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P9; break; |
| 699 | } |
| 700 | } else if (f->avctx->bits_per_raw_sample == 10 && !f->transparency) { |
| 701 | f->packed_at_lsb = 1; |
| 702 | switch(16 * f->chroma_h_shift + f->chroma_v_shift) { |
| 703 | case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P10; break; |
| 704 | case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P10; break; |
| 705 | case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P10; break; |
| 706 | } |
| 707 | } else if (f->avctx->bits_per_raw_sample == 10 && f->transparency) { |
| 708 | f->packed_at_lsb = 1; |
| 709 | switch(16 * f->chroma_h_shift + f->chroma_v_shift) { |
| 710 | case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P10; break; |
| 711 | case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P10; break; |
| 712 | case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P10; break; |
| 713 | } |
| 714 | } else if (f->avctx->bits_per_raw_sample == 16 && !f->transparency){ |
| 715 | switch(16 * f->chroma_h_shift + f->chroma_v_shift) { |
| 716 | case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P16; break; |
| 717 | case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P16; break; |
| 718 | case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P16; break; |
| 719 | } |
| 720 | } else if (f->avctx->bits_per_raw_sample == 16 && f->transparency){ |
| 721 | switch(16 * f->chroma_h_shift + f->chroma_v_shift) { |
| 722 | case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P16; break; |
| 723 | case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P16; break; |
| 724 | case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P16; break; |
| 725 | } |
| 726 | } |
| 727 | } else if (f->colorspace == 1) { |
| 728 | if (f->chroma_h_shift || f->chroma_v_shift) { |
| 729 | av_log(f->avctx, AV_LOG_ERROR, |
| 730 | "chroma subsampling not supported in this colorspace\n"); |
| 731 | return AVERROR(ENOSYS); |
| 732 | } |
| 733 | if ( f->avctx->bits_per_raw_sample == 9) |
| 734 | f->avctx->pix_fmt = AV_PIX_FMT_GBRP9; |
| 735 | else if (f->avctx->bits_per_raw_sample == 10) |
| 736 | f->avctx->pix_fmt = AV_PIX_FMT_GBRP10; |
| 737 | else if (f->avctx->bits_per_raw_sample == 12) |
| 738 | f->avctx->pix_fmt = AV_PIX_FMT_GBRP12; |
| 739 | else if (f->avctx->bits_per_raw_sample == 14) |
| 740 | f->avctx->pix_fmt = AV_PIX_FMT_GBRP14; |
| 741 | else |
| 742 | if (f->transparency) f->avctx->pix_fmt = AV_PIX_FMT_RGB32; |
| 743 | else f->avctx->pix_fmt = AV_PIX_FMT_0RGB32; |
| 744 | } else { |
| 745 | av_log(f->avctx, AV_LOG_ERROR, "colorspace not supported\n"); |
| 746 | return AVERROR(ENOSYS); |
| 747 | } |
| 748 | if (f->avctx->pix_fmt == AV_PIX_FMT_NONE) { |
| 749 | av_log(f->avctx, AV_LOG_ERROR, "format not supported\n"); |
| 750 | return AVERROR(ENOSYS); |
| 751 | } |
| 752 | |
| 753 | av_dlog(f->avctx, "%d %d %d\n", |
| 754 | f->chroma_h_shift, f->chroma_v_shift, f->avctx->pix_fmt); |
| 755 | if (f->version < 2) { |
| 756 | context_count = read_quant_tables(c, f->quant_table); |
| 757 | if (context_count < 0) { |
| 758 | av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n"); |
| 759 | return AVERROR_INVALIDDATA; |
| 760 | } |
| 761 | } else if (f->version < 3) { |
| 762 | f->slice_count = get_symbol(c, state, 0); |
| 763 | } else { |
| 764 | const uint8_t *p = c->bytestream_end; |
| 765 | for (f->slice_count = 0; |
| 766 | f->slice_count < MAX_SLICES && 3 < p - c->bytestream_start; |
| 767 | f->slice_count++) { |
| 768 | int trailer = 3 + 5*!!f->ec; |
| 769 | int size = AV_RB24(p-trailer); |
| 770 | if (size + trailer > p - c->bytestream_start) |
| 771 | break; |
| 772 | p -= size + trailer; |
| 773 | } |
| 774 | } |
| 775 | if (f->slice_count > (unsigned)MAX_SLICES || f->slice_count <= 0) { |
| 776 | av_log(f->avctx, AV_LOG_ERROR, "slice count %d is invalid\n", f->slice_count); |
| 777 | return AVERROR_INVALIDDATA; |
| 778 | } |
| 779 | |
| 780 | for (j = 0; j < f->slice_count; j++) { |
| 781 | FFV1Context *fs = f->slice_context[j]; |
| 782 | fs->ac = f->ac; |
| 783 | fs->packed_at_lsb = f->packed_at_lsb; |
| 784 | |
| 785 | fs->slice_damaged = 0; |
| 786 | |
| 787 | if (f->version == 2) { |
| 788 | fs->slice_x = get_symbol(c, state, 0) * f->width ; |
| 789 | fs->slice_y = get_symbol(c, state, 0) * f->height; |
| 790 | fs->slice_width = (get_symbol(c, state, 0) + 1) * f->width + fs->slice_x; |
| 791 | fs->slice_height = (get_symbol(c, state, 0) + 1) * f->height + fs->slice_y; |
| 792 | |
| 793 | fs->slice_x /= f->num_h_slices; |
| 794 | fs->slice_y /= f->num_v_slices; |
| 795 | fs->slice_width = fs->slice_width / f->num_h_slices - fs->slice_x; |
| 796 | fs->slice_height = fs->slice_height / f->num_v_slices - fs->slice_y; |
| 797 | if ((unsigned)fs->slice_width > f->width || |
| 798 | (unsigned)fs->slice_height > f->height) |
| 799 | return AVERROR_INVALIDDATA; |
| 800 | if ( (unsigned)fs->slice_x + (uint64_t)fs->slice_width > f->width |
| 801 | || (unsigned)fs->slice_y + (uint64_t)fs->slice_height > f->height) |
| 802 | return AVERROR_INVALIDDATA; |
| 803 | } |
| 804 | |
| 805 | for (i = 0; i < f->plane_count; i++) { |
| 806 | PlaneContext *const p = &fs->plane[i]; |
| 807 | |
| 808 | if (f->version == 2) { |
| 809 | int idx = get_symbol(c, state, 0); |
| 810 | if (idx > (unsigned)f->quant_table_count) { |
| 811 | av_log(f->avctx, AV_LOG_ERROR, |
| 812 | "quant_table_index out of range\n"); |
| 813 | return AVERROR_INVALIDDATA; |
| 814 | } |
| 815 | p->quant_table_index = idx; |
| 816 | memcpy(p->quant_table, f->quant_tables[idx], |
| 817 | sizeof(p->quant_table)); |
| 818 | context_count = f->context_count[idx]; |
| 819 | } else { |
| 820 | memcpy(p->quant_table, f->quant_table, sizeof(p->quant_table)); |
| 821 | } |
| 822 | |
| 823 | if (f->version <= 2) { |
| 824 | av_assert0(context_count >= 0); |
| 825 | if (p->context_count < context_count) { |
| 826 | av_freep(&p->state); |
| 827 | av_freep(&p->vlc_state); |
| 828 | } |
| 829 | p->context_count = context_count; |
| 830 | } |
| 831 | } |
| 832 | } |
| 833 | return 0; |
| 834 | } |
| 835 | |
| 836 | static av_cold int decode_init(AVCodecContext *avctx) |
| 837 | { |
| 838 | FFV1Context *f = avctx->priv_data; |
| 839 | int ret; |
| 840 | |
| 841 | if ((ret = ffv1_common_init(avctx)) < 0) |
| 842 | return ret; |
| 843 | |
| 844 | if (avctx->extradata && (ret = read_extra_header(f)) < 0) |
| 845 | return ret; |
| 846 | |
| 847 | if ((ret = ffv1_init_slice_contexts(f)) < 0) |
| 848 | return ret; |
| 849 | |
| 850 | avctx->internal->allocate_progress = 1; |
| 851 | |
| 852 | return 0; |
| 853 | } |
| 854 | |
| 855 | static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt) |
| 856 | { |
| 857 | const uint8_t *buf = avpkt->data; |
| 858 | int buf_size = avpkt->size; |
| 859 | FFV1Context *f = avctx->priv_data; |
| 860 | RangeCoder *const c = &f->slice_context[0]->c; |
| 861 | int i, ret; |
| 862 | uint8_t keystate = 128; |
| 863 | const uint8_t *buf_p; |
| 864 | AVFrame *p; |
| 865 | |
| 866 | if (f->last_picture.f) |
| 867 | ff_thread_release_buffer(avctx, &f->last_picture); |
| 868 | FFSWAP(ThreadFrame, f->picture, f->last_picture); |
| 869 | |
| 870 | f->cur = p = f->picture.f; |
| 871 | |
| 872 | if (f->version < 3 && avctx->field_order > AV_FIELD_PROGRESSIVE) { |
| 873 | /* we have interlaced material flagged in container */ |
| 874 | p->interlaced_frame = 1; |
| 875 | if (avctx->field_order == AV_FIELD_TT || avctx->field_order == AV_FIELD_TB) |
| 876 | p->top_field_first = 1; |
| 877 | } |
| 878 | |
| 879 | f->avctx = avctx; |
| 880 | ff_init_range_decoder(c, buf, buf_size); |
| 881 | ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8); |
| 882 | |
| 883 | p->pict_type = AV_PICTURE_TYPE_I; //FIXME I vs. P |
| 884 | if (get_rac(c, &keystate)) { |
| 885 | p->key_frame = 1; |
| 886 | f->key_frame_ok = 0; |
| 887 | if ((ret = read_header(f)) < 0) |
| 888 | return ret; |
| 889 | f->key_frame_ok = 1; |
| 890 | } else { |
| 891 | if (!f->key_frame_ok) { |
| 892 | av_log(avctx, AV_LOG_ERROR, |
| 893 | "Cannot decode non-keyframe without valid keyframe\n"); |
| 894 | return AVERROR_INVALIDDATA; |
| 895 | } |
| 896 | p->key_frame = 0; |
| 897 | } |
| 898 | |
| 899 | if ((ret = ff_thread_get_buffer(avctx, &f->picture, AV_GET_BUFFER_FLAG_REF)) < 0) |
| 900 | return ret; |
| 901 | |
| 902 | if (avctx->debug & FF_DEBUG_PICT_INFO) |
| 903 | av_log(avctx, AV_LOG_DEBUG, "ver:%d keyframe:%d coder:%d ec:%d slices:%d bps:%d\n", |
| 904 | f->version, p->key_frame, f->ac, f->ec, f->slice_count, f->avctx->bits_per_raw_sample); |
| 905 | |
| 906 | ff_thread_finish_setup(avctx); |
| 907 | |
| 908 | buf_p = buf + buf_size; |
| 909 | for (i = f->slice_count - 1; i >= 0; i--) { |
| 910 | FFV1Context *fs = f->slice_context[i]; |
| 911 | int trailer = 3 + 5*!!f->ec; |
| 912 | int v; |
| 913 | |
| 914 | if (i || f->version > 2) v = AV_RB24(buf_p-trailer) + trailer; |
| 915 | else v = buf_p - c->bytestream_start; |
| 916 | if (buf_p - c->bytestream_start < v) { |
| 917 | av_log(avctx, AV_LOG_ERROR, "Slice pointer chain broken\n"); |
| 918 | return AVERROR_INVALIDDATA; |
| 919 | } |
| 920 | buf_p -= v; |
| 921 | |
| 922 | if (f->ec) { |
| 923 | unsigned crc = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, buf_p, v); |
| 924 | if (crc) { |
| 925 | int64_t ts = avpkt->pts != AV_NOPTS_VALUE ? avpkt->pts : avpkt->dts; |
| 926 | av_log(f->avctx, AV_LOG_ERROR, "CRC mismatch %X!", crc); |
| 927 | if (ts != AV_NOPTS_VALUE && avctx->pkt_timebase.num) { |
| 928 | av_log(f->avctx, AV_LOG_ERROR, "at %f seconds\n", ts*av_q2d(avctx->pkt_timebase)); |
| 929 | } else if (ts != AV_NOPTS_VALUE) { |
| 930 | av_log(f->avctx, AV_LOG_ERROR, "at %"PRId64"\n", ts); |
| 931 | } else { |
| 932 | av_log(f->avctx, AV_LOG_ERROR, "\n"); |
| 933 | } |
| 934 | fs->slice_damaged = 1; |
| 935 | } |
| 936 | } |
| 937 | |
| 938 | if (i) { |
| 939 | ff_init_range_decoder(&fs->c, buf_p, v); |
| 940 | } else |
| 941 | fs->c.bytestream_end = (uint8_t *)(buf_p + v); |
| 942 | |
| 943 | fs->avctx = avctx; |
| 944 | fs->cur = p; |
| 945 | } |
| 946 | |
| 947 | avctx->execute(avctx, |
| 948 | decode_slice, |
| 949 | &f->slice_context[0], |
| 950 | NULL, |
| 951 | f->slice_count, |
| 952 | sizeof(void*)); |
| 953 | |
| 954 | for (i = f->slice_count - 1; i >= 0; i--) { |
| 955 | FFV1Context *fs = f->slice_context[i]; |
| 956 | int j; |
| 957 | if (fs->slice_damaged && f->last_picture.f->data[0]) { |
| 958 | const uint8_t *src[4]; |
| 959 | uint8_t *dst[4]; |
| 960 | ff_thread_await_progress(&f->last_picture, INT_MAX, 0); |
| 961 | for (j = 0; j < 4; j++) { |
| 962 | int sh = (j == 1 || j == 2) ? f->chroma_h_shift : 0; |
| 963 | int sv = (j == 1 || j == 2) ? f->chroma_v_shift : 0; |
| 964 | dst[j] = p->data[j] + p->linesize[j] * |
| 965 | (fs->slice_y >> sv) + (fs->slice_x >> sh); |
| 966 | src[j] = f->last_picture.f->data[j] + f->last_picture.f->linesize[j] * |
| 967 | (fs->slice_y >> sv) + (fs->slice_x >> sh); |
| 968 | } |
| 969 | av_image_copy(dst, p->linesize, (const uint8_t **)src, |
| 970 | f->last_picture.f->linesize, |
| 971 | avctx->pix_fmt, |
| 972 | fs->slice_width, |
| 973 | fs->slice_height); |
| 974 | } |
| 975 | } |
| 976 | ff_thread_report_progress(&f->picture, INT_MAX, 0); |
| 977 | |
| 978 | f->picture_number++; |
| 979 | |
| 980 | if (f->last_picture.f) |
| 981 | ff_thread_release_buffer(avctx, &f->last_picture); |
| 982 | f->cur = NULL; |
| 983 | if ((ret = av_frame_ref(data, f->picture.f)) < 0) |
| 984 | return ret; |
| 985 | |
| 986 | *got_frame = 1; |
| 987 | |
| 988 | return buf_size; |
| 989 | } |
| 990 | |
| 991 | static int init_thread_copy(AVCodecContext *avctx) |
| 992 | { |
| 993 | FFV1Context *f = avctx->priv_data; |
| 994 | int i, ret; |
| 995 | |
| 996 | f->picture.f = NULL; |
| 997 | f->last_picture.f = NULL; |
| 998 | f->sample_buffer = NULL; |
| 999 | f->slice_count = 0; |
| 1000 | |
| 1001 | for (i = 0; i < f->quant_table_count; i++) { |
| 1002 | av_assert0(f->version > 1); |
| 1003 | f->initial_states[i] = av_memdup(f->initial_states[i], |
| 1004 | f->context_count[i] * sizeof(*f->initial_states[i])); |
| 1005 | } |
| 1006 | |
| 1007 | f->picture.f = av_frame_alloc(); |
| 1008 | f->last_picture.f = av_frame_alloc(); |
| 1009 | |
| 1010 | if ((ret = ffv1_init_slice_contexts(f)) < 0) |
| 1011 | return ret; |
| 1012 | |
| 1013 | return 0; |
| 1014 | } |
| 1015 | |
| 1016 | static void copy_fields(FFV1Context *fsdst, FFV1Context *fssrc, FFV1Context *fsrc) |
| 1017 | { |
| 1018 | fsdst->version = fsrc->version; |
| 1019 | fsdst->micro_version = fsrc->micro_version; |
| 1020 | fsdst->chroma_planes = fsrc->chroma_planes; |
| 1021 | fsdst->chroma_h_shift = fsrc->chroma_h_shift; |
| 1022 | fsdst->chroma_v_shift = fsrc->chroma_v_shift; |
| 1023 | fsdst->transparency = fsrc->transparency; |
| 1024 | fsdst->plane_count = fsrc->plane_count; |
| 1025 | fsdst->ac = fsrc->ac; |
| 1026 | fsdst->colorspace = fsrc->colorspace; |
| 1027 | |
| 1028 | fsdst->ec = fsrc->ec; |
| 1029 | fsdst->intra = fsrc->intra; |
| 1030 | fsdst->slice_damaged = fssrc->slice_damaged; |
| 1031 | fsdst->key_frame_ok = fsrc->key_frame_ok; |
| 1032 | |
| 1033 | fsdst->bits_per_raw_sample = fsrc->bits_per_raw_sample; |
| 1034 | fsdst->packed_at_lsb = fsrc->packed_at_lsb; |
| 1035 | fsdst->slice_count = fsrc->slice_count; |
| 1036 | if (fsrc->version<3){ |
| 1037 | fsdst->slice_x = fssrc->slice_x; |
| 1038 | fsdst->slice_y = fssrc->slice_y; |
| 1039 | fsdst->slice_width = fssrc->slice_width; |
| 1040 | fsdst->slice_height = fssrc->slice_height; |
| 1041 | } |
| 1042 | } |
| 1043 | |
| 1044 | static int update_thread_context(AVCodecContext *dst, const AVCodecContext *src) |
| 1045 | { |
| 1046 | FFV1Context *fsrc = src->priv_data; |
| 1047 | FFV1Context *fdst = dst->priv_data; |
| 1048 | int i, ret; |
| 1049 | |
| 1050 | if (dst == src) |
| 1051 | return 0; |
| 1052 | |
| 1053 | { |
| 1054 | FFV1Context bak = *fdst; |
| 1055 | memcpy(fdst, fsrc, sizeof(*fdst)); |
| 1056 | memcpy(fdst->initial_states, bak.initial_states, sizeof(fdst->initial_states)); |
| 1057 | memcpy(fdst->slice_context, bak.slice_context , sizeof(fdst->slice_context)); |
| 1058 | fdst->picture = bak.picture; |
| 1059 | fdst->last_picture = bak.last_picture; |
| 1060 | for (i = 0; i<fdst->num_h_slices * fdst->num_v_slices; i++) { |
| 1061 | FFV1Context *fssrc = fsrc->slice_context[i]; |
| 1062 | FFV1Context *fsdst = fdst->slice_context[i]; |
| 1063 | copy_fields(fsdst, fssrc, fsrc); |
| 1064 | } |
| 1065 | av_assert0(!fdst->plane[0].state); |
| 1066 | av_assert0(!fdst->sample_buffer); |
| 1067 | } |
| 1068 | |
| 1069 | av_assert1(fdst->slice_count == fsrc->slice_count); |
| 1070 | |
| 1071 | |
| 1072 | ff_thread_release_buffer(dst, &fdst->picture); |
| 1073 | if (fsrc->picture.f->data[0]) { |
| 1074 | if ((ret = ff_thread_ref_frame(&fdst->picture, &fsrc->picture)) < 0) |
| 1075 | return ret; |
| 1076 | } |
| 1077 | |
| 1078 | fdst->fsrc = fsrc; |
| 1079 | |
| 1080 | return 0; |
| 1081 | } |
| 1082 | |
| 1083 | AVCodec ff_ffv1_decoder = { |
| 1084 | .name = "ffv1", |
| 1085 | .long_name = NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"), |
| 1086 | .type = AVMEDIA_TYPE_VIDEO, |
| 1087 | .id = AV_CODEC_ID_FFV1, |
| 1088 | .priv_data_size = sizeof(FFV1Context), |
| 1089 | .init = decode_init, |
| 1090 | .close = ffv1_close, |
| 1091 | .decode = decode_frame, |
| 1092 | .init_thread_copy = ONLY_IF_THREADS_ENABLED(init_thread_copy), |
| 1093 | .update_thread_context = ONLY_IF_THREADS_ENABLED(update_thread_context), |
| 1094 | .capabilities = CODEC_CAP_DR1 /*| CODEC_CAP_DRAW_HORIZ_BAND*/ | |
| 1095 | CODEC_CAP_FRAME_THREADS | CODEC_CAP_SLICE_THREADS, |
| 1096 | }; |