| 1 | /* |
| 2 | * Copyright (c) 2010-2011 Maxim Poliakovski |
| 3 | * Copyright (c) 2010-2011 Elvis Presley |
| 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 | * Known FOURCCs: 'apch' (HQ), 'apcn' (SD), 'apcs' (LT), 'acpo' (Proxy), 'ap4h' (4444) |
| 25 | */ |
| 26 | |
| 27 | //#define DEBUG |
| 28 | |
| 29 | #define LONG_BITSTREAM_READER |
| 30 | |
| 31 | #include "avcodec.h" |
| 32 | #include "get_bits.h" |
| 33 | #include "idctdsp.h" |
| 34 | #include "internal.h" |
| 35 | #include "simple_idct.h" |
| 36 | #include "proresdec.h" |
| 37 | #include "proresdata.h" |
| 38 | |
| 39 | static void permute(uint8_t *dst, const uint8_t *src, const uint8_t permutation[64]) |
| 40 | { |
| 41 | int i; |
| 42 | for (i = 0; i < 64; i++) |
| 43 | dst[i] = permutation[src[i]]; |
| 44 | } |
| 45 | |
| 46 | static av_cold int decode_init(AVCodecContext *avctx) |
| 47 | { |
| 48 | ProresContext *ctx = avctx->priv_data; |
| 49 | uint8_t idct_permutation[64]; |
| 50 | |
| 51 | avctx->bits_per_raw_sample = 10; |
| 52 | |
| 53 | ff_blockdsp_init(&ctx->bdsp, avctx); |
| 54 | ff_proresdsp_init(&ctx->prodsp, avctx); |
| 55 | |
| 56 | ff_init_scantable_permutation(idct_permutation, |
| 57 | ctx->prodsp.idct_permutation_type); |
| 58 | |
| 59 | permute(ctx->progressive_scan, ff_prores_progressive_scan, idct_permutation); |
| 60 | permute(ctx->interlaced_scan, ff_prores_interlaced_scan, idct_permutation); |
| 61 | |
| 62 | return 0; |
| 63 | } |
| 64 | |
| 65 | static int decode_frame_header(ProresContext *ctx, const uint8_t *buf, |
| 66 | const int data_size, AVCodecContext *avctx) |
| 67 | { |
| 68 | int hdr_size, width, height, flags; |
| 69 | int version; |
| 70 | const uint8_t *ptr; |
| 71 | |
| 72 | hdr_size = AV_RB16(buf); |
| 73 | av_dlog(avctx, "header size %d\n", hdr_size); |
| 74 | if (hdr_size > data_size) { |
| 75 | av_log(avctx, AV_LOG_ERROR, "error, wrong header size\n"); |
| 76 | return AVERROR_INVALIDDATA; |
| 77 | } |
| 78 | |
| 79 | version = AV_RB16(buf + 2); |
| 80 | av_dlog(avctx, "%.4s version %d\n", buf+4, version); |
| 81 | if (version > 1) { |
| 82 | av_log(avctx, AV_LOG_ERROR, "unsupported version: %d\n", version); |
| 83 | return AVERROR_PATCHWELCOME; |
| 84 | } |
| 85 | |
| 86 | width = AV_RB16(buf + 8); |
| 87 | height = AV_RB16(buf + 10); |
| 88 | if (width != avctx->width || height != avctx->height) { |
| 89 | av_log(avctx, AV_LOG_ERROR, "picture resolution change: %dx%d -> %dx%d\n", |
| 90 | avctx->width, avctx->height, width, height); |
| 91 | return AVERROR_PATCHWELCOME; |
| 92 | } |
| 93 | |
| 94 | ctx->frame_type = (buf[12] >> 2) & 3; |
| 95 | ctx->alpha_info = buf[17] & 0xf; |
| 96 | |
| 97 | if (ctx->alpha_info > 2) { |
| 98 | av_log(avctx, AV_LOG_ERROR, "Invalid alpha mode %d\n", ctx->alpha_info); |
| 99 | return AVERROR_INVALIDDATA; |
| 100 | } |
| 101 | if (avctx->skip_alpha) ctx->alpha_info = 0; |
| 102 | |
| 103 | av_dlog(avctx, "frame type %d\n", ctx->frame_type); |
| 104 | |
| 105 | if (ctx->frame_type == 0) { |
| 106 | ctx->scan = ctx->progressive_scan; // permuted |
| 107 | } else { |
| 108 | ctx->scan = ctx->interlaced_scan; // permuted |
| 109 | ctx->frame->interlaced_frame = 1; |
| 110 | ctx->frame->top_field_first = ctx->frame_type == 1; |
| 111 | } |
| 112 | |
| 113 | if (ctx->alpha_info) { |
| 114 | avctx->pix_fmt = (buf[12] & 0xC0) == 0xC0 ? AV_PIX_FMT_YUVA444P10 : AV_PIX_FMT_YUVA422P10; |
| 115 | } else { |
| 116 | avctx->pix_fmt = (buf[12] & 0xC0) == 0xC0 ? AV_PIX_FMT_YUV444P10 : AV_PIX_FMT_YUV422P10; |
| 117 | } |
| 118 | |
| 119 | ptr = buf + 20; |
| 120 | flags = buf[19]; |
| 121 | av_dlog(avctx, "flags %x\n", flags); |
| 122 | |
| 123 | if (flags & 2) { |
| 124 | if(buf + data_size - ptr < 64) { |
| 125 | av_log(avctx, AV_LOG_ERROR, "Header truncated\n"); |
| 126 | return AVERROR_INVALIDDATA; |
| 127 | } |
| 128 | permute(ctx->qmat_luma, ctx->prodsp.idct_permutation, ptr); |
| 129 | ptr += 64; |
| 130 | } else { |
| 131 | memset(ctx->qmat_luma, 4, 64); |
| 132 | } |
| 133 | |
| 134 | if (flags & 1) { |
| 135 | if(buf + data_size - ptr < 64) { |
| 136 | av_log(avctx, AV_LOG_ERROR, "Header truncated\n"); |
| 137 | return AVERROR_INVALIDDATA; |
| 138 | } |
| 139 | permute(ctx->qmat_chroma, ctx->prodsp.idct_permutation, ptr); |
| 140 | } else { |
| 141 | memset(ctx->qmat_chroma, 4, 64); |
| 142 | } |
| 143 | |
| 144 | return hdr_size; |
| 145 | } |
| 146 | |
| 147 | static int decode_picture_header(AVCodecContext *avctx, const uint8_t *buf, const int buf_size) |
| 148 | { |
| 149 | ProresContext *ctx = avctx->priv_data; |
| 150 | int i, hdr_size, slice_count; |
| 151 | unsigned pic_data_size; |
| 152 | int log2_slice_mb_width, log2_slice_mb_height; |
| 153 | int slice_mb_count, mb_x, mb_y; |
| 154 | const uint8_t *data_ptr, *index_ptr; |
| 155 | |
| 156 | hdr_size = buf[0] >> 3; |
| 157 | if (hdr_size < 8 || hdr_size > buf_size) { |
| 158 | av_log(avctx, AV_LOG_ERROR, "error, wrong picture header size\n"); |
| 159 | return AVERROR_INVALIDDATA; |
| 160 | } |
| 161 | |
| 162 | pic_data_size = AV_RB32(buf + 1); |
| 163 | if (pic_data_size > buf_size) { |
| 164 | av_log(avctx, AV_LOG_ERROR, "error, wrong picture data size\n"); |
| 165 | return AVERROR_INVALIDDATA; |
| 166 | } |
| 167 | |
| 168 | log2_slice_mb_width = buf[7] >> 4; |
| 169 | log2_slice_mb_height = buf[7] & 0xF; |
| 170 | if (log2_slice_mb_width > 3 || log2_slice_mb_height) { |
| 171 | av_log(avctx, AV_LOG_ERROR, "unsupported slice resolution: %dx%d\n", |
| 172 | 1 << log2_slice_mb_width, 1 << log2_slice_mb_height); |
| 173 | return AVERROR_INVALIDDATA; |
| 174 | } |
| 175 | |
| 176 | ctx->mb_width = (avctx->width + 15) >> 4; |
| 177 | if (ctx->frame_type) |
| 178 | ctx->mb_height = (avctx->height + 31) >> 5; |
| 179 | else |
| 180 | ctx->mb_height = (avctx->height + 15) >> 4; |
| 181 | |
| 182 | slice_count = AV_RB16(buf + 5); |
| 183 | |
| 184 | if (ctx->slice_count != slice_count || !ctx->slices) { |
| 185 | av_freep(&ctx->slices); |
| 186 | ctx->slices = av_mallocz_array(slice_count, sizeof(*ctx->slices)); |
| 187 | if (!ctx->slices) |
| 188 | return AVERROR(ENOMEM); |
| 189 | ctx->slice_count = slice_count; |
| 190 | } |
| 191 | |
| 192 | if (!slice_count) |
| 193 | return AVERROR(EINVAL); |
| 194 | |
| 195 | if (hdr_size + slice_count*2 > buf_size) { |
| 196 | av_log(avctx, AV_LOG_ERROR, "error, wrong slice count\n"); |
| 197 | return AVERROR_INVALIDDATA; |
| 198 | } |
| 199 | |
| 200 | // parse slice information |
| 201 | index_ptr = buf + hdr_size; |
| 202 | data_ptr = index_ptr + slice_count*2; |
| 203 | |
| 204 | slice_mb_count = 1 << log2_slice_mb_width; |
| 205 | mb_x = 0; |
| 206 | mb_y = 0; |
| 207 | |
| 208 | for (i = 0; i < slice_count; i++) { |
| 209 | SliceContext *slice = &ctx->slices[i]; |
| 210 | |
| 211 | slice->data = data_ptr; |
| 212 | data_ptr += AV_RB16(index_ptr + i*2); |
| 213 | |
| 214 | while (ctx->mb_width - mb_x < slice_mb_count) |
| 215 | slice_mb_count >>= 1; |
| 216 | |
| 217 | slice->mb_x = mb_x; |
| 218 | slice->mb_y = mb_y; |
| 219 | slice->mb_count = slice_mb_count; |
| 220 | slice->data_size = data_ptr - slice->data; |
| 221 | |
| 222 | if (slice->data_size < 6) { |
| 223 | av_log(avctx, AV_LOG_ERROR, "error, wrong slice data size\n"); |
| 224 | return AVERROR_INVALIDDATA; |
| 225 | } |
| 226 | |
| 227 | mb_x += slice_mb_count; |
| 228 | if (mb_x == ctx->mb_width) { |
| 229 | slice_mb_count = 1 << log2_slice_mb_width; |
| 230 | mb_x = 0; |
| 231 | mb_y++; |
| 232 | } |
| 233 | if (data_ptr > buf + buf_size) { |
| 234 | av_log(avctx, AV_LOG_ERROR, "error, slice out of bounds\n"); |
| 235 | return AVERROR_INVALIDDATA; |
| 236 | } |
| 237 | } |
| 238 | |
| 239 | if (mb_x || mb_y != ctx->mb_height) { |
| 240 | av_log(avctx, AV_LOG_ERROR, "error wrong mb count y %d h %d\n", |
| 241 | mb_y, ctx->mb_height); |
| 242 | return AVERROR_INVALIDDATA; |
| 243 | } |
| 244 | |
| 245 | return pic_data_size; |
| 246 | } |
| 247 | |
| 248 | #define DECODE_CODEWORD(val, codebook) \ |
| 249 | do { \ |
| 250 | unsigned int rice_order, exp_order, switch_bits; \ |
| 251 | unsigned int q, buf, bits; \ |
| 252 | \ |
| 253 | UPDATE_CACHE(re, gb); \ |
| 254 | buf = GET_CACHE(re, gb); \ |
| 255 | \ |
| 256 | /* number of bits to switch between rice and exp golomb */ \ |
| 257 | switch_bits = codebook & 3; \ |
| 258 | rice_order = codebook >> 5; \ |
| 259 | exp_order = (codebook >> 2) & 7; \ |
| 260 | \ |
| 261 | q = 31 - av_log2(buf); \ |
| 262 | \ |
| 263 | if (q > switch_bits) { /* exp golomb */ \ |
| 264 | bits = exp_order - switch_bits + (q<<1); \ |
| 265 | val = SHOW_UBITS(re, gb, bits) - (1 << exp_order) + \ |
| 266 | ((switch_bits + 1) << rice_order); \ |
| 267 | SKIP_BITS(re, gb, bits); \ |
| 268 | } else if (rice_order) { \ |
| 269 | SKIP_BITS(re, gb, q+1); \ |
| 270 | val = (q << rice_order) + SHOW_UBITS(re, gb, rice_order); \ |
| 271 | SKIP_BITS(re, gb, rice_order); \ |
| 272 | } else { \ |
| 273 | val = q; \ |
| 274 | SKIP_BITS(re, gb, q+1); \ |
| 275 | } \ |
| 276 | } while (0) |
| 277 | |
| 278 | #define TOSIGNED(x) (((x) >> 1) ^ (-((x) & 1))) |
| 279 | |
| 280 | #define FIRST_DC_CB 0xB8 |
| 281 | |
| 282 | static const uint8_t dc_codebook[7] = { 0x04, 0x28, 0x28, 0x4D, 0x4D, 0x70, 0x70}; |
| 283 | |
| 284 | static av_always_inline void decode_dc_coeffs(GetBitContext *gb, int16_t *out, |
| 285 | int blocks_per_slice) |
| 286 | { |
| 287 | int16_t prev_dc; |
| 288 | int code, i, sign; |
| 289 | |
| 290 | OPEN_READER(re, gb); |
| 291 | |
| 292 | DECODE_CODEWORD(code, FIRST_DC_CB); |
| 293 | prev_dc = TOSIGNED(code); |
| 294 | out[0] = prev_dc; |
| 295 | |
| 296 | out += 64; // dc coeff for the next block |
| 297 | |
| 298 | code = 5; |
| 299 | sign = 0; |
| 300 | for (i = 1; i < blocks_per_slice; i++, out += 64) { |
| 301 | DECODE_CODEWORD(code, dc_codebook[FFMIN(code, 6U)]); |
| 302 | if(code) sign ^= -(code & 1); |
| 303 | else sign = 0; |
| 304 | prev_dc += (((code + 1) >> 1) ^ sign) - sign; |
| 305 | out[0] = prev_dc; |
| 306 | } |
| 307 | CLOSE_READER(re, gb); |
| 308 | } |
| 309 | |
| 310 | // adaptive codebook switching lut according to previous run/level values |
| 311 | static const uint8_t run_to_cb[16] = { 0x06, 0x06, 0x05, 0x05, 0x04, 0x29, 0x29, 0x29, 0x29, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x4C }; |
| 312 | static const uint8_t lev_to_cb[10] = { 0x04, 0x0A, 0x05, 0x06, 0x04, 0x28, 0x28, 0x28, 0x28, 0x4C }; |
| 313 | |
| 314 | static av_always_inline int decode_ac_coeffs(AVCodecContext *avctx, GetBitContext *gb, |
| 315 | int16_t *out, int blocks_per_slice) |
| 316 | { |
| 317 | ProresContext *ctx = avctx->priv_data; |
| 318 | int block_mask, sign; |
| 319 | unsigned pos, run, level; |
| 320 | int max_coeffs, i, bits_left; |
| 321 | int log2_block_count = av_log2(blocks_per_slice); |
| 322 | |
| 323 | OPEN_READER(re, gb); |
| 324 | UPDATE_CACHE(re, gb); \ |
| 325 | run = 4; |
| 326 | level = 2; |
| 327 | |
| 328 | max_coeffs = 64 << log2_block_count; |
| 329 | block_mask = blocks_per_slice - 1; |
| 330 | |
| 331 | for (pos = block_mask;;) { |
| 332 | bits_left = gb->size_in_bits - re_index; |
| 333 | if (!bits_left || (bits_left < 32 && !SHOW_UBITS(re, gb, bits_left))) |
| 334 | break; |
| 335 | |
| 336 | DECODE_CODEWORD(run, run_to_cb[FFMIN(run, 15)]); |
| 337 | pos += run + 1; |
| 338 | if (pos >= max_coeffs) { |
| 339 | av_log(avctx, AV_LOG_ERROR, "ac tex damaged %d, %d\n", pos, max_coeffs); |
| 340 | return AVERROR_INVALIDDATA; |
| 341 | } |
| 342 | |
| 343 | DECODE_CODEWORD(level, lev_to_cb[FFMIN(level, 9)]); |
| 344 | level += 1; |
| 345 | |
| 346 | i = pos >> log2_block_count; |
| 347 | |
| 348 | sign = SHOW_SBITS(re, gb, 1); |
| 349 | SKIP_BITS(re, gb, 1); |
| 350 | out[((pos & block_mask) << 6) + ctx->scan[i]] = ((level ^ sign) - sign); |
| 351 | } |
| 352 | |
| 353 | CLOSE_READER(re, gb); |
| 354 | return 0; |
| 355 | } |
| 356 | |
| 357 | static int decode_slice_luma(AVCodecContext *avctx, SliceContext *slice, |
| 358 | uint16_t *dst, int dst_stride, |
| 359 | const uint8_t *buf, unsigned buf_size, |
| 360 | const int16_t *qmat) |
| 361 | { |
| 362 | ProresContext *ctx = avctx->priv_data; |
| 363 | LOCAL_ALIGNED_16(int16_t, blocks, [8*4*64]); |
| 364 | int16_t *block; |
| 365 | GetBitContext gb; |
| 366 | int i, blocks_per_slice = slice->mb_count<<2; |
| 367 | int ret; |
| 368 | |
| 369 | for (i = 0; i < blocks_per_slice; i++) |
| 370 | ctx->bdsp.clear_block(blocks+(i<<6)); |
| 371 | |
| 372 | init_get_bits(&gb, buf, buf_size << 3); |
| 373 | |
| 374 | decode_dc_coeffs(&gb, blocks, blocks_per_slice); |
| 375 | if ((ret = decode_ac_coeffs(avctx, &gb, blocks, blocks_per_slice)) < 0) |
| 376 | return ret; |
| 377 | |
| 378 | block = blocks; |
| 379 | for (i = 0; i < slice->mb_count; i++) { |
| 380 | ctx->prodsp.idct_put(dst, dst_stride, block+(0<<6), qmat); |
| 381 | ctx->prodsp.idct_put(dst +8, dst_stride, block+(1<<6), qmat); |
| 382 | ctx->prodsp.idct_put(dst+4*dst_stride , dst_stride, block+(2<<6), qmat); |
| 383 | ctx->prodsp.idct_put(dst+4*dst_stride+8, dst_stride, block+(3<<6), qmat); |
| 384 | block += 4*64; |
| 385 | dst += 16; |
| 386 | } |
| 387 | return 0; |
| 388 | } |
| 389 | |
| 390 | static int decode_slice_chroma(AVCodecContext *avctx, SliceContext *slice, |
| 391 | uint16_t *dst, int dst_stride, |
| 392 | const uint8_t *buf, unsigned buf_size, |
| 393 | const int16_t *qmat, int log2_blocks_per_mb) |
| 394 | { |
| 395 | ProresContext *ctx = avctx->priv_data; |
| 396 | LOCAL_ALIGNED_16(int16_t, blocks, [8*4*64]); |
| 397 | int16_t *block; |
| 398 | GetBitContext gb; |
| 399 | int i, j, blocks_per_slice = slice->mb_count << log2_blocks_per_mb; |
| 400 | int ret; |
| 401 | |
| 402 | for (i = 0; i < blocks_per_slice; i++) |
| 403 | ctx->bdsp.clear_block(blocks+(i<<6)); |
| 404 | |
| 405 | init_get_bits(&gb, buf, buf_size << 3); |
| 406 | |
| 407 | decode_dc_coeffs(&gb, blocks, blocks_per_slice); |
| 408 | if ((ret = decode_ac_coeffs(avctx, &gb, blocks, blocks_per_slice)) < 0) |
| 409 | return ret; |
| 410 | |
| 411 | block = blocks; |
| 412 | for (i = 0; i < slice->mb_count; i++) { |
| 413 | for (j = 0; j < log2_blocks_per_mb; j++) { |
| 414 | ctx->prodsp.idct_put(dst, dst_stride, block+(0<<6), qmat); |
| 415 | ctx->prodsp.idct_put(dst+4*dst_stride, dst_stride, block+(1<<6), qmat); |
| 416 | block += 2*64; |
| 417 | dst += 8; |
| 418 | } |
| 419 | } |
| 420 | return 0; |
| 421 | } |
| 422 | |
| 423 | static void unpack_alpha(GetBitContext *gb, uint16_t *dst, int num_coeffs, |
| 424 | const int num_bits) |
| 425 | { |
| 426 | const int mask = (1 << num_bits) - 1; |
| 427 | int i, idx, val, alpha_val; |
| 428 | |
| 429 | idx = 0; |
| 430 | alpha_val = mask; |
| 431 | do { |
| 432 | do { |
| 433 | if (get_bits1(gb)) { |
| 434 | val = get_bits(gb, num_bits); |
| 435 | } else { |
| 436 | int sign; |
| 437 | val = get_bits(gb, num_bits == 16 ? 7 : 4); |
| 438 | sign = val & 1; |
| 439 | val = (val + 2) >> 1; |
| 440 | if (sign) |
| 441 | val = -val; |
| 442 | } |
| 443 | alpha_val = (alpha_val + val) & mask; |
| 444 | if (num_bits == 16) { |
| 445 | dst[idx++] = alpha_val >> 6; |
| 446 | } else { |
| 447 | dst[idx++] = (alpha_val << 2) | (alpha_val >> 6); |
| 448 | } |
| 449 | if (idx >= num_coeffs) |
| 450 | break; |
| 451 | } while (get_bits_left(gb)>0 && get_bits1(gb)); |
| 452 | val = get_bits(gb, 4); |
| 453 | if (!val) |
| 454 | val = get_bits(gb, 11); |
| 455 | if (idx + val > num_coeffs) |
| 456 | val = num_coeffs - idx; |
| 457 | if (num_bits == 16) { |
| 458 | for (i = 0; i < val; i++) |
| 459 | dst[idx++] = alpha_val >> 6; |
| 460 | } else { |
| 461 | for (i = 0; i < val; i++) |
| 462 | dst[idx++] = (alpha_val << 2) | (alpha_val >> 6); |
| 463 | |
| 464 | } |
| 465 | } while (idx < num_coeffs); |
| 466 | } |
| 467 | |
| 468 | /** |
| 469 | * Decode alpha slice plane. |
| 470 | */ |
| 471 | static void decode_slice_alpha(ProresContext *ctx, |
| 472 | uint16_t *dst, int dst_stride, |
| 473 | const uint8_t *buf, int buf_size, |
| 474 | int blocks_per_slice) |
| 475 | { |
| 476 | GetBitContext gb; |
| 477 | int i; |
| 478 | LOCAL_ALIGNED_16(int16_t, blocks, [8*4*64]); |
| 479 | int16_t *block; |
| 480 | |
| 481 | for (i = 0; i < blocks_per_slice<<2; i++) |
| 482 | ctx->bdsp.clear_block(blocks+(i<<6)); |
| 483 | |
| 484 | init_get_bits(&gb, buf, buf_size << 3); |
| 485 | |
| 486 | if (ctx->alpha_info == 2) { |
| 487 | unpack_alpha(&gb, blocks, blocks_per_slice * 4 * 64, 16); |
| 488 | } else { |
| 489 | unpack_alpha(&gb, blocks, blocks_per_slice * 4 * 64, 8); |
| 490 | } |
| 491 | |
| 492 | block = blocks; |
| 493 | for (i = 0; i < 16; i++) { |
| 494 | memcpy(dst, block, 16 * blocks_per_slice * sizeof(*dst)); |
| 495 | dst += dst_stride >> 1; |
| 496 | block += 16 * blocks_per_slice; |
| 497 | } |
| 498 | } |
| 499 | |
| 500 | static int decode_slice_thread(AVCodecContext *avctx, void *arg, int jobnr, int threadnr) |
| 501 | { |
| 502 | ProresContext *ctx = avctx->priv_data; |
| 503 | SliceContext *slice = &ctx->slices[jobnr]; |
| 504 | const uint8_t *buf = slice->data; |
| 505 | AVFrame *pic = ctx->frame; |
| 506 | int i, hdr_size, qscale, log2_chroma_blocks_per_mb; |
| 507 | int luma_stride, chroma_stride; |
| 508 | int y_data_size, u_data_size, v_data_size, a_data_size; |
| 509 | uint8_t *dest_y, *dest_u, *dest_v, *dest_a; |
| 510 | int16_t qmat_luma_scaled[64]; |
| 511 | int16_t qmat_chroma_scaled[64]; |
| 512 | int mb_x_shift; |
| 513 | int ret; |
| 514 | |
| 515 | slice->ret = -1; |
| 516 | //av_log(avctx, AV_LOG_INFO, "slice %d mb width %d mb x %d y %d\n", |
| 517 | // jobnr, slice->mb_count, slice->mb_x, slice->mb_y); |
| 518 | |
| 519 | // slice header |
| 520 | hdr_size = buf[0] >> 3; |
| 521 | qscale = av_clip(buf[1], 1, 224); |
| 522 | qscale = qscale > 128 ? qscale - 96 << 2: qscale; |
| 523 | y_data_size = AV_RB16(buf + 2); |
| 524 | u_data_size = AV_RB16(buf + 4); |
| 525 | v_data_size = slice->data_size - y_data_size - u_data_size - hdr_size; |
| 526 | if (hdr_size > 7) v_data_size = AV_RB16(buf + 6); |
| 527 | a_data_size = slice->data_size - y_data_size - u_data_size - |
| 528 | v_data_size - hdr_size; |
| 529 | |
| 530 | if (y_data_size < 0 || u_data_size < 0 || v_data_size < 0 |
| 531 | || hdr_size+y_data_size+u_data_size+v_data_size > slice->data_size){ |
| 532 | av_log(avctx, AV_LOG_ERROR, "invalid plane data size\n"); |
| 533 | return AVERROR_INVALIDDATA; |
| 534 | } |
| 535 | |
| 536 | buf += hdr_size; |
| 537 | |
| 538 | for (i = 0; i < 64; i++) { |
| 539 | qmat_luma_scaled [i] = ctx->qmat_luma [i] * qscale; |
| 540 | qmat_chroma_scaled[i] = ctx->qmat_chroma[i] * qscale; |
| 541 | } |
| 542 | |
| 543 | if (ctx->frame_type == 0) { |
| 544 | luma_stride = pic->linesize[0]; |
| 545 | chroma_stride = pic->linesize[1]; |
| 546 | } else { |
| 547 | luma_stride = pic->linesize[0] << 1; |
| 548 | chroma_stride = pic->linesize[1] << 1; |
| 549 | } |
| 550 | |
| 551 | if (avctx->pix_fmt == AV_PIX_FMT_YUV444P10 || avctx->pix_fmt == AV_PIX_FMT_YUVA444P10) { |
| 552 | mb_x_shift = 5; |
| 553 | log2_chroma_blocks_per_mb = 2; |
| 554 | } else { |
| 555 | mb_x_shift = 4; |
| 556 | log2_chroma_blocks_per_mb = 1; |
| 557 | } |
| 558 | |
| 559 | dest_y = pic->data[0] + (slice->mb_y << 4) * luma_stride + (slice->mb_x << 5); |
| 560 | dest_u = pic->data[1] + (slice->mb_y << 4) * chroma_stride + (slice->mb_x << mb_x_shift); |
| 561 | dest_v = pic->data[2] + (slice->mb_y << 4) * chroma_stride + (slice->mb_x << mb_x_shift); |
| 562 | dest_a = pic->data[3] + (slice->mb_y << 4) * luma_stride + (slice->mb_x << 5); |
| 563 | |
| 564 | if (ctx->frame_type && ctx->first_field ^ ctx->frame->top_field_first) { |
| 565 | dest_y += pic->linesize[0]; |
| 566 | dest_u += pic->linesize[1]; |
| 567 | dest_v += pic->linesize[2]; |
| 568 | dest_a += pic->linesize[3]; |
| 569 | } |
| 570 | |
| 571 | ret = decode_slice_luma(avctx, slice, (uint16_t*)dest_y, luma_stride, |
| 572 | buf, y_data_size, qmat_luma_scaled); |
| 573 | if (ret < 0) |
| 574 | return ret; |
| 575 | |
| 576 | if (!(avctx->flags & CODEC_FLAG_GRAY)) { |
| 577 | ret = decode_slice_chroma(avctx, slice, (uint16_t*)dest_u, chroma_stride, |
| 578 | buf + y_data_size, u_data_size, |
| 579 | qmat_chroma_scaled, log2_chroma_blocks_per_mb); |
| 580 | if (ret < 0) |
| 581 | return ret; |
| 582 | |
| 583 | ret = decode_slice_chroma(avctx, slice, (uint16_t*)dest_v, chroma_stride, |
| 584 | buf + y_data_size + u_data_size, v_data_size, |
| 585 | qmat_chroma_scaled, log2_chroma_blocks_per_mb); |
| 586 | if (ret < 0) |
| 587 | return ret; |
| 588 | } |
| 589 | /* decode alpha plane if available */ |
| 590 | if (ctx->alpha_info && pic->data[3] && a_data_size) |
| 591 | decode_slice_alpha(ctx, (uint16_t*)dest_a, luma_stride, |
| 592 | buf + y_data_size + u_data_size + v_data_size, |
| 593 | a_data_size, slice->mb_count); |
| 594 | |
| 595 | slice->ret = 0; |
| 596 | return 0; |
| 597 | } |
| 598 | |
| 599 | static int decode_picture(AVCodecContext *avctx) |
| 600 | { |
| 601 | ProresContext *ctx = avctx->priv_data; |
| 602 | int i; |
| 603 | |
| 604 | avctx->execute2(avctx, decode_slice_thread, NULL, NULL, ctx->slice_count); |
| 605 | |
| 606 | for (i = 0; i < ctx->slice_count; i++) |
| 607 | if (ctx->slices[i].ret < 0) |
| 608 | return ctx->slices[i].ret; |
| 609 | |
| 610 | return 0; |
| 611 | } |
| 612 | |
| 613 | static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, |
| 614 | AVPacket *avpkt) |
| 615 | { |
| 616 | ProresContext *ctx = avctx->priv_data; |
| 617 | AVFrame *frame = data; |
| 618 | const uint8_t *buf = avpkt->data; |
| 619 | int buf_size = avpkt->size; |
| 620 | int frame_hdr_size, pic_size, ret; |
| 621 | |
| 622 | if (buf_size < 28 || AV_RL32(buf + 4) != AV_RL32("icpf")) { |
| 623 | av_log(avctx, AV_LOG_ERROR, "invalid frame header\n"); |
| 624 | return AVERROR_INVALIDDATA; |
| 625 | } |
| 626 | |
| 627 | ctx->frame = frame; |
| 628 | ctx->frame->pict_type = AV_PICTURE_TYPE_I; |
| 629 | ctx->frame->key_frame = 1; |
| 630 | ctx->first_field = 1; |
| 631 | |
| 632 | buf += 8; |
| 633 | buf_size -= 8; |
| 634 | |
| 635 | frame_hdr_size = decode_frame_header(ctx, buf, buf_size, avctx); |
| 636 | if (frame_hdr_size < 0) |
| 637 | return frame_hdr_size; |
| 638 | |
| 639 | buf += frame_hdr_size; |
| 640 | buf_size -= frame_hdr_size; |
| 641 | |
| 642 | if ((ret = ff_get_buffer(avctx, frame, 0)) < 0) |
| 643 | return ret; |
| 644 | |
| 645 | decode_picture: |
| 646 | pic_size = decode_picture_header(avctx, buf, buf_size); |
| 647 | if (pic_size < 0) { |
| 648 | av_log(avctx, AV_LOG_ERROR, "error decoding picture header\n"); |
| 649 | return pic_size; |
| 650 | } |
| 651 | |
| 652 | if ((ret = decode_picture(avctx)) < 0) { |
| 653 | av_log(avctx, AV_LOG_ERROR, "error decoding picture\n"); |
| 654 | return ret; |
| 655 | } |
| 656 | |
| 657 | buf += pic_size; |
| 658 | buf_size -= pic_size; |
| 659 | |
| 660 | if (ctx->frame_type && buf_size > 0 && ctx->first_field) { |
| 661 | ctx->first_field = 0; |
| 662 | goto decode_picture; |
| 663 | } |
| 664 | |
| 665 | *got_frame = 1; |
| 666 | |
| 667 | return avpkt->size; |
| 668 | } |
| 669 | |
| 670 | static av_cold int decode_close(AVCodecContext *avctx) |
| 671 | { |
| 672 | ProresContext *ctx = avctx->priv_data; |
| 673 | |
| 674 | av_freep(&ctx->slices); |
| 675 | |
| 676 | return 0; |
| 677 | } |
| 678 | |
| 679 | AVCodec ff_prores_decoder = { |
| 680 | .name = "prores", |
| 681 | .long_name = NULL_IF_CONFIG_SMALL("ProRes"), |
| 682 | .type = AVMEDIA_TYPE_VIDEO, |
| 683 | .id = AV_CODEC_ID_PRORES, |
| 684 | .priv_data_size = sizeof(ProresContext), |
| 685 | .init = decode_init, |
| 686 | .close = decode_close, |
| 687 | .decode = decode_frame, |
| 688 | .capabilities = CODEC_CAP_DR1 | CODEC_CAP_SLICE_THREADS, |
| 689 | }; |