| 1 | /* |
| 2 | * Apple ProRes encoder |
| 3 | * |
| 4 | * Copyright (c) 2012 Konstantin Shishkov |
| 5 | * |
| 6 | * This encoder appears to be based on Anatoliy Wassermans considering |
| 7 | * similarities in the bugs. |
| 8 | * |
| 9 | * This file is part of FFmpeg. |
| 10 | * |
| 11 | * FFmpeg is free software; you can redistribute it and/or |
| 12 | * modify it under the terms of the GNU Lesser General Public |
| 13 | * License as published by the Free Software Foundation; either |
| 14 | * version 2.1 of the License, or (at your option) any later version. |
| 15 | * |
| 16 | * FFmpeg is distributed in the hope that it will be useful, |
| 17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 19 | * Lesser General Public License for more details. |
| 20 | * |
| 21 | * You should have received a copy of the GNU Lesser General Public |
| 22 | * License along with FFmpeg; if not, write to the Free Software |
| 23 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 24 | */ |
| 25 | |
| 26 | #include "libavutil/opt.h" |
| 27 | #include "libavutil/pixdesc.h" |
| 28 | #include "avcodec.h" |
| 29 | #include "fdctdsp.h" |
| 30 | #include "put_bits.h" |
| 31 | #include "bytestream.h" |
| 32 | #include "internal.h" |
| 33 | #include "proresdata.h" |
| 34 | |
| 35 | #define CFACTOR_Y422 2 |
| 36 | #define CFACTOR_Y444 3 |
| 37 | |
| 38 | #define MAX_MBS_PER_SLICE 8 |
| 39 | |
| 40 | #define MAX_PLANES 4 |
| 41 | |
| 42 | enum { |
| 43 | PRORES_PROFILE_AUTO = -1, |
| 44 | PRORES_PROFILE_PROXY = 0, |
| 45 | PRORES_PROFILE_LT, |
| 46 | PRORES_PROFILE_STANDARD, |
| 47 | PRORES_PROFILE_HQ, |
| 48 | PRORES_PROFILE_4444, |
| 49 | }; |
| 50 | |
| 51 | enum { |
| 52 | QUANT_MAT_PROXY = 0, |
| 53 | QUANT_MAT_LT, |
| 54 | QUANT_MAT_STANDARD, |
| 55 | QUANT_MAT_HQ, |
| 56 | QUANT_MAT_DEFAULT, |
| 57 | }; |
| 58 | |
| 59 | static const uint8_t prores_quant_matrices[][64] = { |
| 60 | { // proxy |
| 61 | 4, 7, 9, 11, 13, 14, 15, 63, |
| 62 | 7, 7, 11, 12, 14, 15, 63, 63, |
| 63 | 9, 11, 13, 14, 15, 63, 63, 63, |
| 64 | 11, 11, 13, 14, 63, 63, 63, 63, |
| 65 | 11, 13, 14, 63, 63, 63, 63, 63, |
| 66 | 13, 14, 63, 63, 63, 63, 63, 63, |
| 67 | 13, 63, 63, 63, 63, 63, 63, 63, |
| 68 | 63, 63, 63, 63, 63, 63, 63, 63, |
| 69 | }, |
| 70 | { // LT |
| 71 | 4, 5, 6, 7, 9, 11, 13, 15, |
| 72 | 5, 5, 7, 8, 11, 13, 15, 17, |
| 73 | 6, 7, 9, 11, 13, 15, 15, 17, |
| 74 | 7, 7, 9, 11, 13, 15, 17, 19, |
| 75 | 7, 9, 11, 13, 14, 16, 19, 23, |
| 76 | 9, 11, 13, 14, 16, 19, 23, 29, |
| 77 | 9, 11, 13, 15, 17, 21, 28, 35, |
| 78 | 11, 13, 16, 17, 21, 28, 35, 41, |
| 79 | }, |
| 80 | { // standard |
| 81 | 4, 4, 5, 5, 6, 7, 7, 9, |
| 82 | 4, 4, 5, 6, 7, 7, 9, 9, |
| 83 | 5, 5, 6, 7, 7, 9, 9, 10, |
| 84 | 5, 5, 6, 7, 7, 9, 9, 10, |
| 85 | 5, 6, 7, 7, 8, 9, 10, 12, |
| 86 | 6, 7, 7, 8, 9, 10, 12, 15, |
| 87 | 6, 7, 7, 9, 10, 11, 14, 17, |
| 88 | 7, 7, 9, 10, 11, 14, 17, 21, |
| 89 | }, |
| 90 | { // high quality |
| 91 | 4, 4, 4, 4, 4, 4, 4, 4, |
| 92 | 4, 4, 4, 4, 4, 4, 4, 4, |
| 93 | 4, 4, 4, 4, 4, 4, 4, 4, |
| 94 | 4, 4, 4, 4, 4, 4, 4, 5, |
| 95 | 4, 4, 4, 4, 4, 4, 5, 5, |
| 96 | 4, 4, 4, 4, 4, 5, 5, 6, |
| 97 | 4, 4, 4, 4, 5, 5, 6, 7, |
| 98 | 4, 4, 4, 4, 5, 6, 7, 7, |
| 99 | }, |
| 100 | { // codec default |
| 101 | 4, 4, 4, 4, 4, 4, 4, 4, |
| 102 | 4, 4, 4, 4, 4, 4, 4, 4, |
| 103 | 4, 4, 4, 4, 4, 4, 4, 4, |
| 104 | 4, 4, 4, 4, 4, 4, 4, 4, |
| 105 | 4, 4, 4, 4, 4, 4, 4, 4, |
| 106 | 4, 4, 4, 4, 4, 4, 4, 4, |
| 107 | 4, 4, 4, 4, 4, 4, 4, 4, |
| 108 | 4, 4, 4, 4, 4, 4, 4, 4, |
| 109 | }, |
| 110 | }; |
| 111 | |
| 112 | #define NUM_MB_LIMITS 4 |
| 113 | static const int prores_mb_limits[NUM_MB_LIMITS] = { |
| 114 | 1620, // up to 720x576 |
| 115 | 2700, // up to 960x720 |
| 116 | 6075, // up to 1440x1080 |
| 117 | 9216, // up to 2048x1152 |
| 118 | }; |
| 119 | |
| 120 | static const struct prores_profile { |
| 121 | const char *full_name; |
| 122 | uint32_t tag; |
| 123 | int min_quant; |
| 124 | int max_quant; |
| 125 | int br_tab[NUM_MB_LIMITS]; |
| 126 | int quant; |
| 127 | } prores_profile_info[5] = { |
| 128 | { |
| 129 | .full_name = "proxy", |
| 130 | .tag = MKTAG('a', 'p', 'c', 'o'), |
| 131 | .min_quant = 4, |
| 132 | .max_quant = 8, |
| 133 | .br_tab = { 300, 242, 220, 194 }, |
| 134 | .quant = QUANT_MAT_PROXY, |
| 135 | }, |
| 136 | { |
| 137 | .full_name = "LT", |
| 138 | .tag = MKTAG('a', 'p', 'c', 's'), |
| 139 | .min_quant = 1, |
| 140 | .max_quant = 9, |
| 141 | .br_tab = { 720, 560, 490, 440 }, |
| 142 | .quant = QUANT_MAT_LT, |
| 143 | }, |
| 144 | { |
| 145 | .full_name = "standard", |
| 146 | .tag = MKTAG('a', 'p', 'c', 'n'), |
| 147 | .min_quant = 1, |
| 148 | .max_quant = 6, |
| 149 | .br_tab = { 1050, 808, 710, 632 }, |
| 150 | .quant = QUANT_MAT_STANDARD, |
| 151 | }, |
| 152 | { |
| 153 | .full_name = "high quality", |
| 154 | .tag = MKTAG('a', 'p', 'c', 'h'), |
| 155 | .min_quant = 1, |
| 156 | .max_quant = 6, |
| 157 | .br_tab = { 1566, 1216, 1070, 950 }, |
| 158 | .quant = QUANT_MAT_HQ, |
| 159 | }, |
| 160 | { |
| 161 | .full_name = "4444", |
| 162 | .tag = MKTAG('a', 'p', '4', 'h'), |
| 163 | .min_quant = 1, |
| 164 | .max_quant = 6, |
| 165 | .br_tab = { 2350, 1828, 1600, 1425 }, |
| 166 | .quant = QUANT_MAT_HQ, |
| 167 | } |
| 168 | }; |
| 169 | |
| 170 | #define TRELLIS_WIDTH 16 |
| 171 | #define SCORE_LIMIT INT_MAX / 2 |
| 172 | |
| 173 | struct TrellisNode { |
| 174 | int prev_node; |
| 175 | int quant; |
| 176 | int bits; |
| 177 | int score; |
| 178 | }; |
| 179 | |
| 180 | #define MAX_STORED_Q 16 |
| 181 | |
| 182 | typedef struct ProresThreadData { |
| 183 | DECLARE_ALIGNED(16, int16_t, blocks)[MAX_PLANES][64 * 4 * MAX_MBS_PER_SLICE]; |
| 184 | DECLARE_ALIGNED(16, uint16_t, emu_buf)[16 * 16]; |
| 185 | int16_t custom_q[64]; |
| 186 | struct TrellisNode *nodes; |
| 187 | } ProresThreadData; |
| 188 | |
| 189 | typedef struct ProresContext { |
| 190 | AVClass *class; |
| 191 | DECLARE_ALIGNED(16, int16_t, blocks)[MAX_PLANES][64 * 4 * MAX_MBS_PER_SLICE]; |
| 192 | DECLARE_ALIGNED(16, uint16_t, emu_buf)[16*16]; |
| 193 | int16_t quants[MAX_STORED_Q][64]; |
| 194 | int16_t custom_q[64]; |
| 195 | const uint8_t *quant_mat; |
| 196 | const uint8_t *scantable; |
| 197 | |
| 198 | void (*fdct)(FDCTDSPContext *fdsp, const uint16_t *src, |
| 199 | int linesize, int16_t *block); |
| 200 | FDCTDSPContext fdsp; |
| 201 | |
| 202 | int mb_width, mb_height; |
| 203 | int mbs_per_slice; |
| 204 | int num_chroma_blocks, chroma_factor; |
| 205 | int slices_width; |
| 206 | int slices_per_picture; |
| 207 | int pictures_per_frame; // 1 for progressive, 2 for interlaced |
| 208 | int cur_picture_idx; |
| 209 | int num_planes; |
| 210 | int bits_per_mb; |
| 211 | int force_quant; |
| 212 | int alpha_bits; |
| 213 | int warn; |
| 214 | |
| 215 | char *vendor; |
| 216 | int quant_sel; |
| 217 | |
| 218 | int frame_size_upper_bound; |
| 219 | |
| 220 | int profile; |
| 221 | const struct prores_profile *profile_info; |
| 222 | |
| 223 | int *slice_q; |
| 224 | |
| 225 | ProresThreadData *tdata; |
| 226 | } ProresContext; |
| 227 | |
| 228 | static void get_slice_data(ProresContext *ctx, const uint16_t *src, |
| 229 | int linesize, int x, int y, int w, int h, |
| 230 | int16_t *blocks, uint16_t *emu_buf, |
| 231 | int mbs_per_slice, int blocks_per_mb, int is_chroma) |
| 232 | { |
| 233 | const uint16_t *esrc; |
| 234 | const int mb_width = 4 * blocks_per_mb; |
| 235 | int elinesize; |
| 236 | int i, j, k; |
| 237 | |
| 238 | for (i = 0; i < mbs_per_slice; i++, src += mb_width) { |
| 239 | if (x >= w) { |
| 240 | memset(blocks, 0, 64 * (mbs_per_slice - i) * blocks_per_mb |
| 241 | * sizeof(*blocks)); |
| 242 | return; |
| 243 | } |
| 244 | if (x + mb_width <= w && y + 16 <= h) { |
| 245 | esrc = src; |
| 246 | elinesize = linesize; |
| 247 | } else { |
| 248 | int bw, bh, pix; |
| 249 | |
| 250 | esrc = emu_buf; |
| 251 | elinesize = 16 * sizeof(*emu_buf); |
| 252 | |
| 253 | bw = FFMIN(w - x, mb_width); |
| 254 | bh = FFMIN(h - y, 16); |
| 255 | |
| 256 | for (j = 0; j < bh; j++) { |
| 257 | memcpy(emu_buf + j * 16, |
| 258 | (const uint8_t*)src + j * linesize, |
| 259 | bw * sizeof(*src)); |
| 260 | pix = emu_buf[j * 16 + bw - 1]; |
| 261 | for (k = bw; k < mb_width; k++) |
| 262 | emu_buf[j * 16 + k] = pix; |
| 263 | } |
| 264 | for (; j < 16; j++) |
| 265 | memcpy(emu_buf + j * 16, |
| 266 | emu_buf + (bh - 1) * 16, |
| 267 | mb_width * sizeof(*emu_buf)); |
| 268 | } |
| 269 | if (!is_chroma) { |
| 270 | ctx->fdct(&ctx->fdsp, esrc, elinesize, blocks); |
| 271 | blocks += 64; |
| 272 | if (blocks_per_mb > 2) { |
| 273 | ctx->fdct(&ctx->fdsp, esrc + 8, elinesize, blocks); |
| 274 | blocks += 64; |
| 275 | } |
| 276 | ctx->fdct(&ctx->fdsp, esrc + elinesize * 4, elinesize, blocks); |
| 277 | blocks += 64; |
| 278 | if (blocks_per_mb > 2) { |
| 279 | ctx->fdct(&ctx->fdsp, esrc + elinesize * 4 + 8, elinesize, blocks); |
| 280 | blocks += 64; |
| 281 | } |
| 282 | } else { |
| 283 | ctx->fdct(&ctx->fdsp, esrc, elinesize, blocks); |
| 284 | blocks += 64; |
| 285 | ctx->fdct(&ctx->fdsp, esrc + elinesize * 4, elinesize, blocks); |
| 286 | blocks += 64; |
| 287 | if (blocks_per_mb > 2) { |
| 288 | ctx->fdct(&ctx->fdsp, esrc + 8, elinesize, blocks); |
| 289 | blocks += 64; |
| 290 | ctx->fdct(&ctx->fdsp, esrc + elinesize * 4 + 8, elinesize, blocks); |
| 291 | blocks += 64; |
| 292 | } |
| 293 | } |
| 294 | |
| 295 | x += mb_width; |
| 296 | } |
| 297 | } |
| 298 | |
| 299 | static void get_alpha_data(ProresContext *ctx, const uint16_t *src, |
| 300 | int linesize, int x, int y, int w, int h, |
| 301 | int16_t *blocks, int mbs_per_slice, int abits) |
| 302 | { |
| 303 | const int slice_width = 16 * mbs_per_slice; |
| 304 | int i, j, copy_w, copy_h; |
| 305 | |
| 306 | copy_w = FFMIN(w - x, slice_width); |
| 307 | copy_h = FFMIN(h - y, 16); |
| 308 | for (i = 0; i < copy_h; i++) { |
| 309 | memcpy(blocks, src, copy_w * sizeof(*src)); |
| 310 | if (abits == 8) |
| 311 | for (j = 0; j < copy_w; j++) |
| 312 | blocks[j] >>= 2; |
| 313 | else |
| 314 | for (j = 0; j < copy_w; j++) |
| 315 | blocks[j] = (blocks[j] << 6) | (blocks[j] >> 4); |
| 316 | for (j = copy_w; j < slice_width; j++) |
| 317 | blocks[j] = blocks[copy_w - 1]; |
| 318 | blocks += slice_width; |
| 319 | src += linesize >> 1; |
| 320 | } |
| 321 | for (; i < 16; i++) { |
| 322 | memcpy(blocks, blocks - slice_width, slice_width * sizeof(*blocks)); |
| 323 | blocks += slice_width; |
| 324 | } |
| 325 | } |
| 326 | |
| 327 | /** |
| 328 | * Write an unsigned rice/exp golomb codeword. |
| 329 | */ |
| 330 | static inline void encode_vlc_codeword(PutBitContext *pb, unsigned codebook, int val) |
| 331 | { |
| 332 | unsigned int rice_order, exp_order, switch_bits, switch_val; |
| 333 | int exponent; |
| 334 | |
| 335 | /* number of prefix bits to switch between Rice and expGolomb */ |
| 336 | switch_bits = (codebook & 3) + 1; |
| 337 | rice_order = codebook >> 5; /* rice code order */ |
| 338 | exp_order = (codebook >> 2) & 7; /* exp golomb code order */ |
| 339 | |
| 340 | switch_val = switch_bits << rice_order; |
| 341 | |
| 342 | if (val >= switch_val) { |
| 343 | val -= switch_val - (1 << exp_order); |
| 344 | exponent = av_log2(val); |
| 345 | |
| 346 | put_bits(pb, exponent - exp_order + switch_bits, 0); |
| 347 | put_bits(pb, exponent + 1, val); |
| 348 | } else { |
| 349 | exponent = val >> rice_order; |
| 350 | |
| 351 | if (exponent) |
| 352 | put_bits(pb, exponent, 0); |
| 353 | put_bits(pb, 1, 1); |
| 354 | if (rice_order) |
| 355 | put_sbits(pb, rice_order, val); |
| 356 | } |
| 357 | } |
| 358 | |
| 359 | #define GET_SIGN(x) ((x) >> 31) |
| 360 | #define MAKE_CODE(x) (((x) << 1) ^ GET_SIGN(x)) |
| 361 | |
| 362 | static void encode_dcs(PutBitContext *pb, int16_t *blocks, |
| 363 | int blocks_per_slice, int scale) |
| 364 | { |
| 365 | int i; |
| 366 | int codebook = 3, code, dc, prev_dc, delta, sign, new_sign; |
| 367 | |
| 368 | prev_dc = (blocks[0] - 0x4000) / scale; |
| 369 | encode_vlc_codeword(pb, FIRST_DC_CB, MAKE_CODE(prev_dc)); |
| 370 | sign = 0; |
| 371 | codebook = 3; |
| 372 | blocks += 64; |
| 373 | |
| 374 | for (i = 1; i < blocks_per_slice; i++, blocks += 64) { |
| 375 | dc = (blocks[0] - 0x4000) / scale; |
| 376 | delta = dc - prev_dc; |
| 377 | new_sign = GET_SIGN(delta); |
| 378 | delta = (delta ^ sign) - sign; |
| 379 | code = MAKE_CODE(delta); |
| 380 | encode_vlc_codeword(pb, ff_prores_dc_codebook[codebook], code); |
| 381 | codebook = (code + (code & 1)) >> 1; |
| 382 | codebook = FFMIN(codebook, 3); |
| 383 | sign = new_sign; |
| 384 | prev_dc = dc; |
| 385 | } |
| 386 | } |
| 387 | |
| 388 | static void encode_acs(PutBitContext *pb, int16_t *blocks, |
| 389 | int blocks_per_slice, |
| 390 | int plane_size_factor, |
| 391 | const uint8_t *scan, const int16_t *qmat) |
| 392 | { |
| 393 | int idx, i; |
| 394 | int run, level, run_cb, lev_cb; |
| 395 | int max_coeffs, abs_level; |
| 396 | |
| 397 | max_coeffs = blocks_per_slice << 6; |
| 398 | run_cb = ff_prores_run_to_cb_index[4]; |
| 399 | lev_cb = ff_prores_lev_to_cb_index[2]; |
| 400 | run = 0; |
| 401 | |
| 402 | for (i = 1; i < 64; i++) { |
| 403 | for (idx = scan[i]; idx < max_coeffs; idx += 64) { |
| 404 | level = blocks[idx] / qmat[scan[i]]; |
| 405 | if (level) { |
| 406 | abs_level = FFABS(level); |
| 407 | encode_vlc_codeword(pb, ff_prores_ac_codebook[run_cb], run); |
| 408 | encode_vlc_codeword(pb, ff_prores_ac_codebook[lev_cb], |
| 409 | abs_level - 1); |
| 410 | put_sbits(pb, 1, GET_SIGN(level)); |
| 411 | |
| 412 | run_cb = ff_prores_run_to_cb_index[FFMIN(run, 15)]; |
| 413 | lev_cb = ff_prores_lev_to_cb_index[FFMIN(abs_level, 9)]; |
| 414 | run = 0; |
| 415 | } else { |
| 416 | run++; |
| 417 | } |
| 418 | } |
| 419 | } |
| 420 | } |
| 421 | |
| 422 | static int encode_slice_plane(ProresContext *ctx, PutBitContext *pb, |
| 423 | const uint16_t *src, int linesize, |
| 424 | int mbs_per_slice, int16_t *blocks, |
| 425 | int blocks_per_mb, int plane_size_factor, |
| 426 | const int16_t *qmat) |
| 427 | { |
| 428 | int blocks_per_slice, saved_pos; |
| 429 | |
| 430 | saved_pos = put_bits_count(pb); |
| 431 | blocks_per_slice = mbs_per_slice * blocks_per_mb; |
| 432 | |
| 433 | encode_dcs(pb, blocks, blocks_per_slice, qmat[0]); |
| 434 | encode_acs(pb, blocks, blocks_per_slice, plane_size_factor, |
| 435 | ctx->scantable, qmat); |
| 436 | flush_put_bits(pb); |
| 437 | |
| 438 | return (put_bits_count(pb) - saved_pos) >> 3; |
| 439 | } |
| 440 | |
| 441 | static void put_alpha_diff(PutBitContext *pb, int cur, int prev, int abits) |
| 442 | { |
| 443 | const int mask = (1 << abits) - 1; |
| 444 | const int dbits = (abits == 8) ? 4 : 7; |
| 445 | const int dsize = 1 << dbits - 1; |
| 446 | int diff = cur - prev; |
| 447 | |
| 448 | diff &= mask; |
| 449 | if (diff >= (1 << abits) - dsize) |
| 450 | diff -= 1 << abits; |
| 451 | if (diff < -dsize || diff > dsize || !diff) { |
| 452 | put_bits(pb, 1, 1); |
| 453 | put_bits(pb, abits, diff); |
| 454 | } else { |
| 455 | put_bits(pb, 1, 0); |
| 456 | put_bits(pb, dbits - 1, FFABS(diff) - 1); |
| 457 | put_bits(pb, 1, diff < 0); |
| 458 | } |
| 459 | } |
| 460 | |
| 461 | static void put_alpha_run(PutBitContext *pb, int run) |
| 462 | { |
| 463 | if (run) { |
| 464 | put_bits(pb, 1, 0); |
| 465 | if (run < 0x10) |
| 466 | put_bits(pb, 4, run); |
| 467 | else |
| 468 | put_bits(pb, 15, run); |
| 469 | } else { |
| 470 | put_bits(pb, 1, 1); |
| 471 | } |
| 472 | } |
| 473 | |
| 474 | // todo alpha quantisation for high quants |
| 475 | static int encode_alpha_plane(ProresContext *ctx, PutBitContext *pb, |
| 476 | int mbs_per_slice, uint16_t *blocks, |
| 477 | int quant) |
| 478 | { |
| 479 | const int abits = ctx->alpha_bits; |
| 480 | const int mask = (1 << abits) - 1; |
| 481 | const int num_coeffs = mbs_per_slice * 256; |
| 482 | int saved_pos = put_bits_count(pb); |
| 483 | int prev = mask, cur; |
| 484 | int idx = 0; |
| 485 | int run = 0; |
| 486 | |
| 487 | cur = blocks[idx++]; |
| 488 | put_alpha_diff(pb, cur, prev, abits); |
| 489 | prev = cur; |
| 490 | do { |
| 491 | cur = blocks[idx++]; |
| 492 | if (cur != prev) { |
| 493 | put_alpha_run (pb, run); |
| 494 | put_alpha_diff(pb, cur, prev, abits); |
| 495 | prev = cur; |
| 496 | run = 0; |
| 497 | } else { |
| 498 | run++; |
| 499 | } |
| 500 | } while (idx < num_coeffs); |
| 501 | if (run) |
| 502 | put_alpha_run(pb, run); |
| 503 | flush_put_bits(pb); |
| 504 | return (put_bits_count(pb) - saved_pos) >> 3; |
| 505 | } |
| 506 | |
| 507 | static int encode_slice(AVCodecContext *avctx, const AVFrame *pic, |
| 508 | PutBitContext *pb, |
| 509 | int sizes[4], int x, int y, int quant, |
| 510 | int mbs_per_slice) |
| 511 | { |
| 512 | ProresContext *ctx = avctx->priv_data; |
| 513 | int i, xp, yp; |
| 514 | int total_size = 0; |
| 515 | const uint16_t *src; |
| 516 | int slice_width_factor = av_log2(mbs_per_slice); |
| 517 | int num_cblocks, pwidth, linesize, line_add; |
| 518 | int plane_factor, is_chroma; |
| 519 | uint16_t *qmat; |
| 520 | |
| 521 | if (ctx->pictures_per_frame == 1) |
| 522 | line_add = 0; |
| 523 | else |
| 524 | line_add = ctx->cur_picture_idx ^ !pic->top_field_first; |
| 525 | |
| 526 | if (ctx->force_quant) { |
| 527 | qmat = ctx->quants[0]; |
| 528 | } else if (quant < MAX_STORED_Q) { |
| 529 | qmat = ctx->quants[quant]; |
| 530 | } else { |
| 531 | qmat = ctx->custom_q; |
| 532 | for (i = 0; i < 64; i++) |
| 533 | qmat[i] = ctx->quant_mat[i] * quant; |
| 534 | } |
| 535 | |
| 536 | for (i = 0; i < ctx->num_planes; i++) { |
| 537 | is_chroma = (i == 1 || i == 2); |
| 538 | plane_factor = slice_width_factor + 2; |
| 539 | if (is_chroma) |
| 540 | plane_factor += ctx->chroma_factor - 3; |
| 541 | if (!is_chroma || ctx->chroma_factor == CFACTOR_Y444) { |
| 542 | xp = x << 4; |
| 543 | yp = y << 4; |
| 544 | num_cblocks = 4; |
| 545 | pwidth = avctx->width; |
| 546 | } else { |
| 547 | xp = x << 3; |
| 548 | yp = y << 4; |
| 549 | num_cblocks = 2; |
| 550 | pwidth = avctx->width >> 1; |
| 551 | } |
| 552 | |
| 553 | linesize = pic->linesize[i] * ctx->pictures_per_frame; |
| 554 | src = (const uint16_t*)(pic->data[i] + yp * linesize + |
| 555 | line_add * pic->linesize[i]) + xp; |
| 556 | |
| 557 | if (i < 3) { |
| 558 | get_slice_data(ctx, src, linesize, xp, yp, |
| 559 | pwidth, avctx->height / ctx->pictures_per_frame, |
| 560 | ctx->blocks[0], ctx->emu_buf, |
| 561 | mbs_per_slice, num_cblocks, is_chroma); |
| 562 | sizes[i] = encode_slice_plane(ctx, pb, src, linesize, |
| 563 | mbs_per_slice, ctx->blocks[0], |
| 564 | num_cblocks, plane_factor, |
| 565 | qmat); |
| 566 | } else { |
| 567 | get_alpha_data(ctx, src, linesize, xp, yp, |
| 568 | pwidth, avctx->height / ctx->pictures_per_frame, |
| 569 | ctx->blocks[0], mbs_per_slice, ctx->alpha_bits); |
| 570 | sizes[i] = encode_alpha_plane(ctx, pb, mbs_per_slice, |
| 571 | ctx->blocks[0], quant); |
| 572 | } |
| 573 | total_size += sizes[i]; |
| 574 | if (put_bits_left(pb) < 0) { |
| 575 | av_log(avctx, AV_LOG_ERROR, |
| 576 | "Underestimated required buffer size.\n"); |
| 577 | return AVERROR_BUG; |
| 578 | } |
| 579 | } |
| 580 | return total_size; |
| 581 | } |
| 582 | |
| 583 | static inline int estimate_vlc(unsigned codebook, int val) |
| 584 | { |
| 585 | unsigned int rice_order, exp_order, switch_bits, switch_val; |
| 586 | int exponent; |
| 587 | |
| 588 | /* number of prefix bits to switch between Rice and expGolomb */ |
| 589 | switch_bits = (codebook & 3) + 1; |
| 590 | rice_order = codebook >> 5; /* rice code order */ |
| 591 | exp_order = (codebook >> 2) & 7; /* exp golomb code order */ |
| 592 | |
| 593 | switch_val = switch_bits << rice_order; |
| 594 | |
| 595 | if (val >= switch_val) { |
| 596 | val -= switch_val - (1 << exp_order); |
| 597 | exponent = av_log2(val); |
| 598 | |
| 599 | return exponent * 2 - exp_order + switch_bits + 1; |
| 600 | } else { |
| 601 | return (val >> rice_order) + rice_order + 1; |
| 602 | } |
| 603 | } |
| 604 | |
| 605 | static int estimate_dcs(int *error, int16_t *blocks, int blocks_per_slice, |
| 606 | int scale) |
| 607 | { |
| 608 | int i; |
| 609 | int codebook = 3, code, dc, prev_dc, delta, sign, new_sign; |
| 610 | int bits; |
| 611 | |
| 612 | prev_dc = (blocks[0] - 0x4000) / scale; |
| 613 | bits = estimate_vlc(FIRST_DC_CB, MAKE_CODE(prev_dc)); |
| 614 | sign = 0; |
| 615 | codebook = 3; |
| 616 | blocks += 64; |
| 617 | *error += FFABS(blocks[0] - 0x4000) % scale; |
| 618 | |
| 619 | for (i = 1; i < blocks_per_slice; i++, blocks += 64) { |
| 620 | dc = (blocks[0] - 0x4000) / scale; |
| 621 | *error += FFABS(blocks[0] - 0x4000) % scale; |
| 622 | delta = dc - prev_dc; |
| 623 | new_sign = GET_SIGN(delta); |
| 624 | delta = (delta ^ sign) - sign; |
| 625 | code = MAKE_CODE(delta); |
| 626 | bits += estimate_vlc(ff_prores_dc_codebook[codebook], code); |
| 627 | codebook = (code + (code & 1)) >> 1; |
| 628 | codebook = FFMIN(codebook, 3); |
| 629 | sign = new_sign; |
| 630 | prev_dc = dc; |
| 631 | } |
| 632 | |
| 633 | return bits; |
| 634 | } |
| 635 | |
| 636 | static int estimate_acs(int *error, int16_t *blocks, int blocks_per_slice, |
| 637 | int plane_size_factor, |
| 638 | const uint8_t *scan, const int16_t *qmat) |
| 639 | { |
| 640 | int idx, i; |
| 641 | int run, level, run_cb, lev_cb; |
| 642 | int max_coeffs, abs_level; |
| 643 | int bits = 0; |
| 644 | |
| 645 | max_coeffs = blocks_per_slice << 6; |
| 646 | run_cb = ff_prores_run_to_cb_index[4]; |
| 647 | lev_cb = ff_prores_lev_to_cb_index[2]; |
| 648 | run = 0; |
| 649 | |
| 650 | for (i = 1; i < 64; i++) { |
| 651 | for (idx = scan[i]; idx < max_coeffs; idx += 64) { |
| 652 | level = blocks[idx] / qmat[scan[i]]; |
| 653 | *error += FFABS(blocks[idx]) % qmat[scan[i]]; |
| 654 | if (level) { |
| 655 | abs_level = FFABS(level); |
| 656 | bits += estimate_vlc(ff_prores_ac_codebook[run_cb], run); |
| 657 | bits += estimate_vlc(ff_prores_ac_codebook[lev_cb], |
| 658 | abs_level - 1) + 1; |
| 659 | |
| 660 | run_cb = ff_prores_run_to_cb_index[FFMIN(run, 15)]; |
| 661 | lev_cb = ff_prores_lev_to_cb_index[FFMIN(abs_level, 9)]; |
| 662 | run = 0; |
| 663 | } else { |
| 664 | run++; |
| 665 | } |
| 666 | } |
| 667 | } |
| 668 | |
| 669 | return bits; |
| 670 | } |
| 671 | |
| 672 | static int estimate_slice_plane(ProresContext *ctx, int *error, int plane, |
| 673 | const uint16_t *src, int linesize, |
| 674 | int mbs_per_slice, |
| 675 | int blocks_per_mb, int plane_size_factor, |
| 676 | const int16_t *qmat, ProresThreadData *td) |
| 677 | { |
| 678 | int blocks_per_slice; |
| 679 | int bits; |
| 680 | |
| 681 | blocks_per_slice = mbs_per_slice * blocks_per_mb; |
| 682 | |
| 683 | bits = estimate_dcs(error, td->blocks[plane], blocks_per_slice, qmat[0]); |
| 684 | bits += estimate_acs(error, td->blocks[plane], blocks_per_slice, |
| 685 | plane_size_factor, ctx->scantable, qmat); |
| 686 | |
| 687 | return FFALIGN(bits, 8); |
| 688 | } |
| 689 | |
| 690 | static int est_alpha_diff(int cur, int prev, int abits) |
| 691 | { |
| 692 | const int mask = (1 << abits) - 1; |
| 693 | const int dbits = (abits == 8) ? 4 : 7; |
| 694 | const int dsize = 1 << dbits - 1; |
| 695 | int diff = cur - prev; |
| 696 | |
| 697 | diff &= mask; |
| 698 | if (diff >= (1 << abits) - dsize) |
| 699 | diff -= 1 << abits; |
| 700 | if (diff < -dsize || diff > dsize || !diff) |
| 701 | return abits + 1; |
| 702 | else |
| 703 | return dbits + 1; |
| 704 | } |
| 705 | |
| 706 | static int estimate_alpha_plane(ProresContext *ctx, int *error, |
| 707 | const uint16_t *src, int linesize, |
| 708 | int mbs_per_slice, int quant, |
| 709 | int16_t *blocks) |
| 710 | { |
| 711 | const int abits = ctx->alpha_bits; |
| 712 | const int mask = (1 << abits) - 1; |
| 713 | const int num_coeffs = mbs_per_slice * 256; |
| 714 | int prev = mask, cur; |
| 715 | int idx = 0; |
| 716 | int run = 0; |
| 717 | int bits; |
| 718 | |
| 719 | *error = 0; |
| 720 | cur = blocks[idx++]; |
| 721 | bits = est_alpha_diff(cur, prev, abits); |
| 722 | prev = cur; |
| 723 | do { |
| 724 | cur = blocks[idx++]; |
| 725 | if (cur != prev) { |
| 726 | if (!run) |
| 727 | bits++; |
| 728 | else if (run < 0x10) |
| 729 | bits += 4; |
| 730 | else |
| 731 | bits += 15; |
| 732 | bits += est_alpha_diff(cur, prev, abits); |
| 733 | prev = cur; |
| 734 | run = 0; |
| 735 | } else { |
| 736 | run++; |
| 737 | } |
| 738 | } while (idx < num_coeffs); |
| 739 | |
| 740 | if (run) { |
| 741 | if (run < 0x10) |
| 742 | bits += 4; |
| 743 | else |
| 744 | bits += 15; |
| 745 | } |
| 746 | |
| 747 | return bits; |
| 748 | } |
| 749 | |
| 750 | static int find_slice_quant(AVCodecContext *avctx, const AVFrame *pic, |
| 751 | int trellis_node, int x, int y, int mbs_per_slice, |
| 752 | ProresThreadData *td) |
| 753 | { |
| 754 | ProresContext *ctx = avctx->priv_data; |
| 755 | int i, q, pq, xp, yp; |
| 756 | const uint16_t *src; |
| 757 | int slice_width_factor = av_log2(mbs_per_slice); |
| 758 | int num_cblocks[MAX_PLANES], pwidth; |
| 759 | int plane_factor[MAX_PLANES], is_chroma[MAX_PLANES]; |
| 760 | const int min_quant = ctx->profile_info->min_quant; |
| 761 | const int max_quant = ctx->profile_info->max_quant; |
| 762 | int error, bits, bits_limit; |
| 763 | int mbs, prev, cur, new_score; |
| 764 | int slice_bits[TRELLIS_WIDTH], slice_score[TRELLIS_WIDTH]; |
| 765 | int overquant; |
| 766 | uint16_t *qmat; |
| 767 | int linesize[4], line_add; |
| 768 | |
| 769 | if (ctx->pictures_per_frame == 1) |
| 770 | line_add = 0; |
| 771 | else |
| 772 | line_add = ctx->cur_picture_idx ^ !pic->top_field_first; |
| 773 | mbs = x + mbs_per_slice; |
| 774 | |
| 775 | for (i = 0; i < ctx->num_planes; i++) { |
| 776 | is_chroma[i] = (i == 1 || i == 2); |
| 777 | plane_factor[i] = slice_width_factor + 2; |
| 778 | if (is_chroma[i]) |
| 779 | plane_factor[i] += ctx->chroma_factor - 3; |
| 780 | if (!is_chroma[i] || ctx->chroma_factor == CFACTOR_Y444) { |
| 781 | xp = x << 4; |
| 782 | yp = y << 4; |
| 783 | num_cblocks[i] = 4; |
| 784 | pwidth = avctx->width; |
| 785 | } else { |
| 786 | xp = x << 3; |
| 787 | yp = y << 4; |
| 788 | num_cblocks[i] = 2; |
| 789 | pwidth = avctx->width >> 1; |
| 790 | } |
| 791 | |
| 792 | linesize[i] = pic->linesize[i] * ctx->pictures_per_frame; |
| 793 | src = (const uint16_t*)(pic->data[i] + yp * linesize[i] + |
| 794 | line_add * pic->linesize[i]) + xp; |
| 795 | |
| 796 | if (i < 3) { |
| 797 | get_slice_data(ctx, src, linesize[i], xp, yp, |
| 798 | pwidth, avctx->height / ctx->pictures_per_frame, |
| 799 | td->blocks[i], td->emu_buf, |
| 800 | mbs_per_slice, num_cblocks[i], is_chroma[i]); |
| 801 | } else { |
| 802 | get_alpha_data(ctx, src, linesize[i], xp, yp, |
| 803 | pwidth, avctx->height / ctx->pictures_per_frame, |
| 804 | td->blocks[i], mbs_per_slice, ctx->alpha_bits); |
| 805 | } |
| 806 | } |
| 807 | |
| 808 | for (q = min_quant; q < max_quant + 2; q++) { |
| 809 | td->nodes[trellis_node + q].prev_node = -1; |
| 810 | td->nodes[trellis_node + q].quant = q; |
| 811 | } |
| 812 | |
| 813 | // todo: maybe perform coarser quantising to fit into frame size when needed |
| 814 | for (q = min_quant; q <= max_quant; q++) { |
| 815 | bits = 0; |
| 816 | error = 0; |
| 817 | for (i = 0; i < ctx->num_planes - !!ctx->alpha_bits; i++) { |
| 818 | bits += estimate_slice_plane(ctx, &error, i, |
| 819 | src, linesize[i], |
| 820 | mbs_per_slice, |
| 821 | num_cblocks[i], plane_factor[i], |
| 822 | ctx->quants[q], td); |
| 823 | } |
| 824 | if (ctx->alpha_bits) |
| 825 | bits += estimate_alpha_plane(ctx, &error, src, linesize[3], |
| 826 | mbs_per_slice, q, td->blocks[3]); |
| 827 | if (bits > 65000 * 8) { |
| 828 | error = SCORE_LIMIT; |
| 829 | break; |
| 830 | } |
| 831 | slice_bits[q] = bits; |
| 832 | slice_score[q] = error; |
| 833 | } |
| 834 | if (slice_bits[max_quant] <= ctx->bits_per_mb * mbs_per_slice) { |
| 835 | slice_bits[max_quant + 1] = slice_bits[max_quant]; |
| 836 | slice_score[max_quant + 1] = slice_score[max_quant] + 1; |
| 837 | overquant = max_quant; |
| 838 | } else { |
| 839 | for (q = max_quant + 1; q < 128; q++) { |
| 840 | bits = 0; |
| 841 | error = 0; |
| 842 | if (q < MAX_STORED_Q) { |
| 843 | qmat = ctx->quants[q]; |
| 844 | } else { |
| 845 | qmat = td->custom_q; |
| 846 | for (i = 0; i < 64; i++) |
| 847 | qmat[i] = ctx->quant_mat[i] * q; |
| 848 | } |
| 849 | for (i = 0; i < ctx->num_planes - !!ctx->alpha_bits; i++) { |
| 850 | bits += estimate_slice_plane(ctx, &error, i, |
| 851 | src, linesize[i], |
| 852 | mbs_per_slice, |
| 853 | num_cblocks[i], plane_factor[i], |
| 854 | qmat, td); |
| 855 | } |
| 856 | if (ctx->alpha_bits) |
| 857 | bits += estimate_alpha_plane(ctx, &error, src, linesize[3], |
| 858 | mbs_per_slice, q, td->blocks[3]); |
| 859 | if (bits <= ctx->bits_per_mb * mbs_per_slice) |
| 860 | break; |
| 861 | } |
| 862 | |
| 863 | slice_bits[max_quant + 1] = bits; |
| 864 | slice_score[max_quant + 1] = error; |
| 865 | overquant = q; |
| 866 | } |
| 867 | td->nodes[trellis_node + max_quant + 1].quant = overquant; |
| 868 | |
| 869 | bits_limit = mbs * ctx->bits_per_mb; |
| 870 | for (pq = min_quant; pq < max_quant + 2; pq++) { |
| 871 | prev = trellis_node - TRELLIS_WIDTH + pq; |
| 872 | |
| 873 | for (q = min_quant; q < max_quant + 2; q++) { |
| 874 | cur = trellis_node + q; |
| 875 | |
| 876 | bits = td->nodes[prev].bits + slice_bits[q]; |
| 877 | error = slice_score[q]; |
| 878 | if (bits > bits_limit) |
| 879 | error = SCORE_LIMIT; |
| 880 | |
| 881 | if (td->nodes[prev].score < SCORE_LIMIT && error < SCORE_LIMIT) |
| 882 | new_score = td->nodes[prev].score + error; |
| 883 | else |
| 884 | new_score = SCORE_LIMIT; |
| 885 | if (td->nodes[cur].prev_node == -1 || |
| 886 | td->nodes[cur].score >= new_score) { |
| 887 | |
| 888 | td->nodes[cur].bits = bits; |
| 889 | td->nodes[cur].score = new_score; |
| 890 | td->nodes[cur].prev_node = prev; |
| 891 | } |
| 892 | } |
| 893 | } |
| 894 | |
| 895 | error = td->nodes[trellis_node + min_quant].score; |
| 896 | pq = trellis_node + min_quant; |
| 897 | for (q = min_quant + 1; q < max_quant + 2; q++) { |
| 898 | if (td->nodes[trellis_node + q].score <= error) { |
| 899 | error = td->nodes[trellis_node + q].score; |
| 900 | pq = trellis_node + q; |
| 901 | } |
| 902 | } |
| 903 | |
| 904 | return pq; |
| 905 | } |
| 906 | |
| 907 | static int find_quant_thread(AVCodecContext *avctx, void *arg, |
| 908 | int jobnr, int threadnr) |
| 909 | { |
| 910 | ProresContext *ctx = avctx->priv_data; |
| 911 | ProresThreadData *td = ctx->tdata + threadnr; |
| 912 | int mbs_per_slice = ctx->mbs_per_slice; |
| 913 | int x, y = jobnr, mb, q = 0; |
| 914 | |
| 915 | for (x = mb = 0; x < ctx->mb_width; x += mbs_per_slice, mb++) { |
| 916 | while (ctx->mb_width - x < mbs_per_slice) |
| 917 | mbs_per_slice >>= 1; |
| 918 | q = find_slice_quant(avctx, avctx->coded_frame, |
| 919 | (mb + 1) * TRELLIS_WIDTH, x, y, |
| 920 | mbs_per_slice, td); |
| 921 | } |
| 922 | |
| 923 | for (x = ctx->slices_width - 1; x >= 0; x--) { |
| 924 | ctx->slice_q[x + y * ctx->slices_width] = td->nodes[q].quant; |
| 925 | q = td->nodes[q].prev_node; |
| 926 | } |
| 927 | |
| 928 | return 0; |
| 929 | } |
| 930 | |
| 931 | static int encode_frame(AVCodecContext *avctx, AVPacket *pkt, |
| 932 | const AVFrame *pic, int *got_packet) |
| 933 | { |
| 934 | ProresContext *ctx = avctx->priv_data; |
| 935 | uint8_t *orig_buf, *buf, *slice_hdr, *slice_sizes, *tmp; |
| 936 | uint8_t *picture_size_pos; |
| 937 | PutBitContext pb; |
| 938 | int x, y, i, mb, q = 0; |
| 939 | int sizes[4] = { 0 }; |
| 940 | int slice_hdr_size = 2 + 2 * (ctx->num_planes - 1); |
| 941 | int frame_size, picture_size, slice_size; |
| 942 | int pkt_size, ret; |
| 943 | int max_slice_size = (ctx->frame_size_upper_bound - 200) / (ctx->pictures_per_frame * ctx->slices_per_picture + 1); |
| 944 | uint8_t frame_flags; |
| 945 | |
| 946 | *avctx->coded_frame = *pic; |
| 947 | avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I; |
| 948 | avctx->coded_frame->key_frame = 1; |
| 949 | |
| 950 | pkt_size = ctx->frame_size_upper_bound; |
| 951 | |
| 952 | if ((ret = ff_alloc_packet2(avctx, pkt, pkt_size + FF_MIN_BUFFER_SIZE)) < 0) |
| 953 | return ret; |
| 954 | |
| 955 | orig_buf = pkt->data; |
| 956 | |
| 957 | // frame atom |
| 958 | orig_buf += 4; // frame size |
| 959 | bytestream_put_be32 (&orig_buf, FRAME_ID); // frame container ID |
| 960 | buf = orig_buf; |
| 961 | |
| 962 | // frame header |
| 963 | tmp = buf; |
| 964 | buf += 2; // frame header size will be stored here |
| 965 | bytestream_put_be16 (&buf, 0); // version 1 |
| 966 | bytestream_put_buffer(&buf, ctx->vendor, 4); |
| 967 | bytestream_put_be16 (&buf, avctx->width); |
| 968 | bytestream_put_be16 (&buf, avctx->height); |
| 969 | |
| 970 | frame_flags = ctx->chroma_factor << 6; |
| 971 | if (avctx->flags & CODEC_FLAG_INTERLACED_DCT) |
| 972 | frame_flags |= pic->top_field_first ? 0x04 : 0x08; |
| 973 | bytestream_put_byte (&buf, frame_flags); |
| 974 | |
| 975 | bytestream_put_byte (&buf, 0); // reserved |
| 976 | bytestream_put_byte (&buf, avctx->color_primaries); |
| 977 | bytestream_put_byte (&buf, avctx->color_trc); |
| 978 | bytestream_put_byte (&buf, avctx->colorspace); |
| 979 | bytestream_put_byte (&buf, 0x40 | (ctx->alpha_bits >> 3)); |
| 980 | bytestream_put_byte (&buf, 0); // reserved |
| 981 | if (ctx->quant_sel != QUANT_MAT_DEFAULT) { |
| 982 | bytestream_put_byte (&buf, 0x03); // matrix flags - both matrices are present |
| 983 | // luma quantisation matrix |
| 984 | for (i = 0; i < 64; i++) |
| 985 | bytestream_put_byte(&buf, ctx->quant_mat[i]); |
| 986 | // chroma quantisation matrix |
| 987 | for (i = 0; i < 64; i++) |
| 988 | bytestream_put_byte(&buf, ctx->quant_mat[i]); |
| 989 | } else { |
| 990 | bytestream_put_byte (&buf, 0x00); // matrix flags - default matrices are used |
| 991 | } |
| 992 | bytestream_put_be16 (&tmp, buf - orig_buf); // write back frame header size |
| 993 | |
| 994 | for (ctx->cur_picture_idx = 0; |
| 995 | ctx->cur_picture_idx < ctx->pictures_per_frame; |
| 996 | ctx->cur_picture_idx++) { |
| 997 | // picture header |
| 998 | picture_size_pos = buf + 1; |
| 999 | bytestream_put_byte (&buf, 0x40); // picture header size (in bits) |
| 1000 | buf += 4; // picture data size will be stored here |
| 1001 | bytestream_put_be16 (&buf, ctx->slices_per_picture); |
| 1002 | bytestream_put_byte (&buf, av_log2(ctx->mbs_per_slice) << 4); // slice width and height in MBs |
| 1003 | |
| 1004 | // seek table - will be filled during slice encoding |
| 1005 | slice_sizes = buf; |
| 1006 | buf += ctx->slices_per_picture * 2; |
| 1007 | |
| 1008 | // slices |
| 1009 | if (!ctx->force_quant) { |
| 1010 | ret = avctx->execute2(avctx, find_quant_thread, NULL, NULL, |
| 1011 | ctx->mb_height); |
| 1012 | if (ret) |
| 1013 | return ret; |
| 1014 | } |
| 1015 | |
| 1016 | for (y = 0; y < ctx->mb_height; y++) { |
| 1017 | int mbs_per_slice = ctx->mbs_per_slice; |
| 1018 | for (x = mb = 0; x < ctx->mb_width; x += mbs_per_slice, mb++) { |
| 1019 | q = ctx->force_quant ? ctx->force_quant |
| 1020 | : ctx->slice_q[mb + y * ctx->slices_width]; |
| 1021 | |
| 1022 | while (ctx->mb_width - x < mbs_per_slice) |
| 1023 | mbs_per_slice >>= 1; |
| 1024 | |
| 1025 | bytestream_put_byte(&buf, slice_hdr_size << 3); |
| 1026 | slice_hdr = buf; |
| 1027 | buf += slice_hdr_size - 1; |
| 1028 | if (pkt_size <= buf - orig_buf + 2 * max_slice_size) { |
| 1029 | uint8_t *start = pkt->data; |
| 1030 | // Recompute new size according to max_slice_size |
| 1031 | // and deduce delta |
| 1032 | int delta = 200 + (ctx->pictures_per_frame * |
| 1033 | ctx->slices_per_picture + 1) * |
| 1034 | max_slice_size - pkt_size; |
| 1035 | |
| 1036 | delta = FFMAX(delta, 2 * max_slice_size); |
| 1037 | ctx->frame_size_upper_bound += delta; |
| 1038 | |
| 1039 | if (!ctx->warn) { |
| 1040 | avpriv_request_sample(avctx, |
| 1041 | "Packet too small: is %i," |
| 1042 | " needs %i (slice: %i). " |
| 1043 | "Correct allocation", |
| 1044 | pkt_size, delta, max_slice_size); |
| 1045 | ctx->warn = 1; |
| 1046 | } |
| 1047 | |
| 1048 | ret = av_grow_packet(pkt, delta); |
| 1049 | if (ret < 0) |
| 1050 | return ret; |
| 1051 | |
| 1052 | pkt_size += delta; |
| 1053 | // restore pointers |
| 1054 | orig_buf = pkt->data + (orig_buf - start); |
| 1055 | buf = pkt->data + (buf - start); |
| 1056 | picture_size_pos = pkt->data + (picture_size_pos - start); |
| 1057 | slice_sizes = pkt->data + (slice_sizes - start); |
| 1058 | slice_hdr = pkt->data + (slice_hdr - start); |
| 1059 | tmp = pkt->data + (tmp - start); |
| 1060 | } |
| 1061 | init_put_bits(&pb, buf, (pkt_size - (buf - orig_buf)) * 8); |
| 1062 | ret = encode_slice(avctx, pic, &pb, sizes, x, y, q, |
| 1063 | mbs_per_slice); |
| 1064 | if (ret < 0) |
| 1065 | return ret; |
| 1066 | |
| 1067 | bytestream_put_byte(&slice_hdr, q); |
| 1068 | slice_size = slice_hdr_size + sizes[ctx->num_planes - 1]; |
| 1069 | for (i = 0; i < ctx->num_planes - 1; i++) { |
| 1070 | bytestream_put_be16(&slice_hdr, sizes[i]); |
| 1071 | slice_size += sizes[i]; |
| 1072 | } |
| 1073 | bytestream_put_be16(&slice_sizes, slice_size); |
| 1074 | buf += slice_size - slice_hdr_size; |
| 1075 | if (max_slice_size < slice_size) |
| 1076 | max_slice_size = slice_size; |
| 1077 | } |
| 1078 | } |
| 1079 | |
| 1080 | picture_size = buf - (picture_size_pos - 1); |
| 1081 | bytestream_put_be32(&picture_size_pos, picture_size); |
| 1082 | } |
| 1083 | |
| 1084 | orig_buf -= 8; |
| 1085 | frame_size = buf - orig_buf; |
| 1086 | bytestream_put_be32(&orig_buf, frame_size); |
| 1087 | |
| 1088 | pkt->size = frame_size; |
| 1089 | pkt->flags |= AV_PKT_FLAG_KEY; |
| 1090 | *got_packet = 1; |
| 1091 | |
| 1092 | return 0; |
| 1093 | } |
| 1094 | |
| 1095 | static av_cold int encode_close(AVCodecContext *avctx) |
| 1096 | { |
| 1097 | ProresContext *ctx = avctx->priv_data; |
| 1098 | int i; |
| 1099 | |
| 1100 | av_freep(&avctx->coded_frame); |
| 1101 | |
| 1102 | if (ctx->tdata) { |
| 1103 | for (i = 0; i < avctx->thread_count; i++) |
| 1104 | av_free(ctx->tdata[i].nodes); |
| 1105 | } |
| 1106 | av_freep(&ctx->tdata); |
| 1107 | av_freep(&ctx->slice_q); |
| 1108 | |
| 1109 | return 0; |
| 1110 | } |
| 1111 | |
| 1112 | static void prores_fdct(FDCTDSPContext *fdsp, const uint16_t *src, |
| 1113 | int linesize, int16_t *block) |
| 1114 | { |
| 1115 | int x, y; |
| 1116 | const uint16_t *tsrc = src; |
| 1117 | |
| 1118 | for (y = 0; y < 8; y++) { |
| 1119 | for (x = 0; x < 8; x++) |
| 1120 | block[y * 8 + x] = tsrc[x]; |
| 1121 | tsrc += linesize >> 1; |
| 1122 | } |
| 1123 | fdsp->fdct(block); |
| 1124 | } |
| 1125 | |
| 1126 | static av_cold int encode_init(AVCodecContext *avctx) |
| 1127 | { |
| 1128 | ProresContext *ctx = avctx->priv_data; |
| 1129 | int mps; |
| 1130 | int i, j; |
| 1131 | int min_quant, max_quant; |
| 1132 | int interlaced = !!(avctx->flags & CODEC_FLAG_INTERLACED_DCT); |
| 1133 | |
| 1134 | avctx->bits_per_raw_sample = 10; |
| 1135 | avctx->coded_frame = av_frame_alloc(); |
| 1136 | if (!avctx->coded_frame) |
| 1137 | return AVERROR(ENOMEM); |
| 1138 | |
| 1139 | ctx->fdct = prores_fdct; |
| 1140 | ctx->scantable = interlaced ? ff_prores_interlaced_scan |
| 1141 | : ff_prores_progressive_scan; |
| 1142 | ff_fdctdsp_init(&ctx->fdsp, avctx); |
| 1143 | |
| 1144 | mps = ctx->mbs_per_slice; |
| 1145 | if (mps & (mps - 1)) { |
| 1146 | av_log(avctx, AV_LOG_ERROR, |
| 1147 | "there should be an integer power of two MBs per slice\n"); |
| 1148 | return AVERROR(EINVAL); |
| 1149 | } |
| 1150 | if (ctx->profile == PRORES_PROFILE_AUTO) { |
| 1151 | ctx->profile = av_pix_fmt_desc_get(avctx->pix_fmt)->flags & AV_PIX_FMT_FLAG_ALPHA |
| 1152 | ? PRORES_PROFILE_4444 : PRORES_PROFILE_HQ; |
| 1153 | av_log(avctx, AV_LOG_INFO, "Autoselected %s. It can be overridden " |
| 1154 | "through -profile option.\n", ctx->profile == PRORES_PROFILE_4444 |
| 1155 | ? "4:4:4:4 profile because of the alpha channel" |
| 1156 | : "HQ profile to keep best quality"); |
| 1157 | } |
| 1158 | if (av_pix_fmt_desc_get(avctx->pix_fmt)->flags & AV_PIX_FMT_FLAG_ALPHA) { |
| 1159 | if (ctx->profile != PRORES_PROFILE_4444) { |
| 1160 | // force alpha and warn |
| 1161 | av_log(avctx, AV_LOG_WARNING, "Profile selected will not " |
| 1162 | "encode alpha. Override with -profile if needed.\n"); |
| 1163 | ctx->alpha_bits = 0; |
| 1164 | } |
| 1165 | if (ctx->alpha_bits & 7) { |
| 1166 | av_log(avctx, AV_LOG_ERROR, "alpha bits should be 0, 8 or 16\n"); |
| 1167 | return AVERROR(EINVAL); |
| 1168 | } |
| 1169 | } else { |
| 1170 | ctx->alpha_bits = 0; |
| 1171 | } |
| 1172 | |
| 1173 | ctx->chroma_factor = avctx->pix_fmt == AV_PIX_FMT_YUV422P10 |
| 1174 | ? CFACTOR_Y422 |
| 1175 | : CFACTOR_Y444; |
| 1176 | ctx->profile_info = prores_profile_info + ctx->profile; |
| 1177 | ctx->num_planes = 3 + !!ctx->alpha_bits; |
| 1178 | |
| 1179 | ctx->mb_width = FFALIGN(avctx->width, 16) >> 4; |
| 1180 | |
| 1181 | if (interlaced) |
| 1182 | ctx->mb_height = FFALIGN(avctx->height, 32) >> 5; |
| 1183 | else |
| 1184 | ctx->mb_height = FFALIGN(avctx->height, 16) >> 4; |
| 1185 | |
| 1186 | ctx->slices_width = ctx->mb_width / mps; |
| 1187 | ctx->slices_width += av_popcount(ctx->mb_width - ctx->slices_width * mps); |
| 1188 | ctx->slices_per_picture = ctx->mb_height * ctx->slices_width; |
| 1189 | ctx->pictures_per_frame = 1 + interlaced; |
| 1190 | |
| 1191 | if (ctx->quant_sel == -1) |
| 1192 | ctx->quant_mat = prores_quant_matrices[ctx->profile_info->quant]; |
| 1193 | else |
| 1194 | ctx->quant_mat = prores_quant_matrices[ctx->quant_sel]; |
| 1195 | |
| 1196 | if (strlen(ctx->vendor) != 4) { |
| 1197 | av_log(avctx, AV_LOG_ERROR, "vendor ID should be 4 bytes\n"); |
| 1198 | return AVERROR_INVALIDDATA; |
| 1199 | } |
| 1200 | |
| 1201 | ctx->force_quant = avctx->global_quality / FF_QP2LAMBDA; |
| 1202 | if (!ctx->force_quant) { |
| 1203 | if (!ctx->bits_per_mb) { |
| 1204 | for (i = 0; i < NUM_MB_LIMITS - 1; i++) |
| 1205 | if (prores_mb_limits[i] >= ctx->mb_width * ctx->mb_height * |
| 1206 | ctx->pictures_per_frame) |
| 1207 | break; |
| 1208 | ctx->bits_per_mb = ctx->profile_info->br_tab[i]; |
| 1209 | } else if (ctx->bits_per_mb < 128) { |
| 1210 | av_log(avctx, AV_LOG_ERROR, "too few bits per MB, please set at least 128\n"); |
| 1211 | return AVERROR_INVALIDDATA; |
| 1212 | } |
| 1213 | |
| 1214 | min_quant = ctx->profile_info->min_quant; |
| 1215 | max_quant = ctx->profile_info->max_quant; |
| 1216 | for (i = min_quant; i < MAX_STORED_Q; i++) { |
| 1217 | for (j = 0; j < 64; j++) |
| 1218 | ctx->quants[i][j] = ctx->quant_mat[j] * i; |
| 1219 | } |
| 1220 | |
| 1221 | ctx->slice_q = av_malloc(ctx->slices_per_picture * sizeof(*ctx->slice_q)); |
| 1222 | if (!ctx->slice_q) { |
| 1223 | encode_close(avctx); |
| 1224 | return AVERROR(ENOMEM); |
| 1225 | } |
| 1226 | |
| 1227 | ctx->tdata = av_mallocz(avctx->thread_count * sizeof(*ctx->tdata)); |
| 1228 | if (!ctx->tdata) { |
| 1229 | encode_close(avctx); |
| 1230 | return AVERROR(ENOMEM); |
| 1231 | } |
| 1232 | |
| 1233 | for (j = 0; j < avctx->thread_count; j++) { |
| 1234 | ctx->tdata[j].nodes = av_malloc((ctx->slices_width + 1) |
| 1235 | * TRELLIS_WIDTH |
| 1236 | * sizeof(*ctx->tdata->nodes)); |
| 1237 | if (!ctx->tdata[j].nodes) { |
| 1238 | encode_close(avctx); |
| 1239 | return AVERROR(ENOMEM); |
| 1240 | } |
| 1241 | for (i = min_quant; i < max_quant + 2; i++) { |
| 1242 | ctx->tdata[j].nodes[i].prev_node = -1; |
| 1243 | ctx->tdata[j].nodes[i].bits = 0; |
| 1244 | ctx->tdata[j].nodes[i].score = 0; |
| 1245 | } |
| 1246 | } |
| 1247 | } else { |
| 1248 | int ls = 0; |
| 1249 | |
| 1250 | if (ctx->force_quant > 64) { |
| 1251 | av_log(avctx, AV_LOG_ERROR, "too large quantiser, maximum is 64\n"); |
| 1252 | return AVERROR_INVALIDDATA; |
| 1253 | } |
| 1254 | |
| 1255 | for (j = 0; j < 64; j++) { |
| 1256 | ctx->quants[0][j] = ctx->quant_mat[j] * ctx->force_quant; |
| 1257 | ls += av_log2((1 << 11) / ctx->quants[0][j]) * 2 + 1; |
| 1258 | } |
| 1259 | |
| 1260 | ctx->bits_per_mb = ls * 8; |
| 1261 | if (ctx->chroma_factor == CFACTOR_Y444) |
| 1262 | ctx->bits_per_mb += ls * 4; |
| 1263 | } |
| 1264 | |
| 1265 | ctx->frame_size_upper_bound = (ctx->pictures_per_frame * |
| 1266 | ctx->slices_per_picture + 1) * |
| 1267 | (2 + 2 * ctx->num_planes + |
| 1268 | (mps * ctx->bits_per_mb) / 8) |
| 1269 | + 200; |
| 1270 | |
| 1271 | if (ctx->alpha_bits) { |
| 1272 | // The alpha plane is run-coded and might exceed the bit budget. |
| 1273 | ctx->frame_size_upper_bound += (ctx->pictures_per_frame * |
| 1274 | ctx->slices_per_picture + 1) * |
| 1275 | /* num pixels per slice */ (ctx->mbs_per_slice * 256 * |
| 1276 | /* bits per pixel */ (1 + ctx->alpha_bits + 1) + 7 >> 3); |
| 1277 | } |
| 1278 | |
| 1279 | avctx->codec_tag = ctx->profile_info->tag; |
| 1280 | |
| 1281 | av_log(avctx, AV_LOG_DEBUG, |
| 1282 | "profile %d, %d slices, interlacing: %s, %d bits per MB\n", |
| 1283 | ctx->profile, ctx->slices_per_picture * ctx->pictures_per_frame, |
| 1284 | interlaced ? "yes" : "no", ctx->bits_per_mb); |
| 1285 | av_log(avctx, AV_LOG_DEBUG, "frame size upper bound: %d\n", |
| 1286 | ctx->frame_size_upper_bound); |
| 1287 | |
| 1288 | return 0; |
| 1289 | } |
| 1290 | |
| 1291 | #define OFFSET(x) offsetof(ProresContext, x) |
| 1292 | #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM |
| 1293 | |
| 1294 | static const AVOption options[] = { |
| 1295 | { "mbs_per_slice", "macroblocks per slice", OFFSET(mbs_per_slice), |
| 1296 | AV_OPT_TYPE_INT, { .i64 = 8 }, 1, MAX_MBS_PER_SLICE, VE }, |
| 1297 | { "profile", NULL, OFFSET(profile), AV_OPT_TYPE_INT, |
| 1298 | { .i64 = PRORES_PROFILE_AUTO }, |
| 1299 | PRORES_PROFILE_AUTO, PRORES_PROFILE_4444, VE, "profile" }, |
| 1300 | { "auto", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = PRORES_PROFILE_AUTO }, |
| 1301 | 0, 0, VE, "profile" }, |
| 1302 | { "proxy", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = PRORES_PROFILE_PROXY }, |
| 1303 | 0, 0, VE, "profile" }, |
| 1304 | { "lt", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = PRORES_PROFILE_LT }, |
| 1305 | 0, 0, VE, "profile" }, |
| 1306 | { "standard", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = PRORES_PROFILE_STANDARD }, |
| 1307 | 0, 0, VE, "profile" }, |
| 1308 | { "hq", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = PRORES_PROFILE_HQ }, |
| 1309 | 0, 0, VE, "profile" }, |
| 1310 | { "4444", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = PRORES_PROFILE_4444 }, |
| 1311 | 0, 0, VE, "profile" }, |
| 1312 | { "vendor", "vendor ID", OFFSET(vendor), |
| 1313 | AV_OPT_TYPE_STRING, { .str = "Lavc" }, CHAR_MIN, CHAR_MAX, VE }, |
| 1314 | { "bits_per_mb", "desired bits per macroblock", OFFSET(bits_per_mb), |
| 1315 | AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 8192, VE }, |
| 1316 | { "quant_mat", "quantiser matrix", OFFSET(quant_sel), AV_OPT_TYPE_INT, |
| 1317 | { .i64 = -1 }, -1, QUANT_MAT_DEFAULT, VE, "quant_mat" }, |
| 1318 | { "auto", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = -1 }, |
| 1319 | 0, 0, VE, "quant_mat" }, |
| 1320 | { "proxy", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = QUANT_MAT_PROXY }, |
| 1321 | 0, 0, VE, "quant_mat" }, |
| 1322 | { "lt", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = QUANT_MAT_LT }, |
| 1323 | 0, 0, VE, "quant_mat" }, |
| 1324 | { "standard", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = QUANT_MAT_STANDARD }, |
| 1325 | 0, 0, VE, "quant_mat" }, |
| 1326 | { "hq", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = QUANT_MAT_HQ }, |
| 1327 | 0, 0, VE, "quant_mat" }, |
| 1328 | { "default", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = QUANT_MAT_DEFAULT }, |
| 1329 | 0, 0, VE, "quant_mat" }, |
| 1330 | { "alpha_bits", "bits for alpha plane", OFFSET(alpha_bits), AV_OPT_TYPE_INT, |
| 1331 | { .i64 = 16 }, 0, 16, VE }, |
| 1332 | { NULL } |
| 1333 | }; |
| 1334 | |
| 1335 | static const AVClass proresenc_class = { |
| 1336 | .class_name = "ProRes encoder", |
| 1337 | .item_name = av_default_item_name, |
| 1338 | .option = options, |
| 1339 | .version = LIBAVUTIL_VERSION_INT, |
| 1340 | }; |
| 1341 | |
| 1342 | AVCodec ff_prores_ks_encoder = { |
| 1343 | .name = "prores_ks", |
| 1344 | .long_name = NULL_IF_CONFIG_SMALL("Apple ProRes (iCodec Pro)"), |
| 1345 | .type = AVMEDIA_TYPE_VIDEO, |
| 1346 | .id = AV_CODEC_ID_PRORES, |
| 1347 | .priv_data_size = sizeof(ProresContext), |
| 1348 | .init = encode_init, |
| 1349 | .close = encode_close, |
| 1350 | .encode2 = encode_frame, |
| 1351 | .capabilities = CODEC_CAP_SLICE_THREADS, |
| 1352 | .pix_fmts = (const enum AVPixelFormat[]) { |
| 1353 | AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10, |
| 1354 | AV_PIX_FMT_YUVA444P10, AV_PIX_FMT_NONE |
| 1355 | }, |
| 1356 | .priv_class = &proresenc_class, |
| 1357 | }; |