| 1 | /* |
| 2 | * Apple ProRes encoder |
| 3 | * |
| 4 | * Copyright (c) 2011 Anatoliy Wasserman |
| 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 | * Apple ProRes encoder (Anatoliy Wasserman version) |
| 26 | * Known FOURCCs: 'apch' (HQ), 'apcn' (SD), 'apcs' (LT), 'acpo' (Proxy) |
| 27 | */ |
| 28 | |
| 29 | #include "avcodec.h" |
| 30 | #include "dct.h" |
| 31 | #include "internal.h" |
| 32 | #include "put_bits.h" |
| 33 | #include "bytestream.h" |
| 34 | #include "fdctdsp.h" |
| 35 | |
| 36 | #define DEFAULT_SLICE_MB_WIDTH 8 |
| 37 | |
| 38 | #define FF_PROFILE_PRORES_PROXY 0 |
| 39 | #define FF_PROFILE_PRORES_LT 1 |
| 40 | #define FF_PROFILE_PRORES_STANDARD 2 |
| 41 | #define FF_PROFILE_PRORES_HQ 3 |
| 42 | |
| 43 | static const AVProfile profiles[] = { |
| 44 | { FF_PROFILE_PRORES_PROXY, "apco"}, |
| 45 | { FF_PROFILE_PRORES_LT, "apcs"}, |
| 46 | { FF_PROFILE_PRORES_STANDARD, "apcn"}, |
| 47 | { FF_PROFILE_PRORES_HQ, "apch"}, |
| 48 | { FF_PROFILE_UNKNOWN } |
| 49 | }; |
| 50 | |
| 51 | static const int qp_start_table[4] = { 4, 1, 1, 1 }; |
| 52 | static const int qp_end_table[4] = { 8, 9, 6, 6 }; |
| 53 | static const int bitrate_table[5] = { 1000, 2100, 3500, 5400 }; |
| 54 | |
| 55 | static const uint8_t progressive_scan[64] = { |
| 56 | 0, 1, 8, 9, 2, 3, 10, 11, |
| 57 | 16, 17, 24, 25, 18, 19, 26, 27, |
| 58 | 4, 5, 12, 20, 13, 6, 7, 14, |
| 59 | 21, 28, 29, 22, 15, 23, 30, 31, |
| 60 | 32, 33, 40, 48, 41, 34, 35, 42, |
| 61 | 49, 56, 57, 50, 43, 36, 37, 44, |
| 62 | 51, 58, 59, 52, 45, 38, 39, 46, |
| 63 | 53, 60, 61, 54, 47, 55, 62, 63 |
| 64 | }; |
| 65 | |
| 66 | static const uint8_t QMAT_LUMA[4][64] = { |
| 67 | { |
| 68 | 4, 7, 9, 11, 13, 14, 15, 63, |
| 69 | 7, 7, 11, 12, 14, 15, 63, 63, |
| 70 | 9, 11, 13, 14, 15, 63, 63, 63, |
| 71 | 11, 11, 13, 14, 63, 63, 63, 63, |
| 72 | 11, 13, 14, 63, 63, 63, 63, 63, |
| 73 | 13, 14, 63, 63, 63, 63, 63, 63, |
| 74 | 13, 63, 63, 63, 63, 63, 63, 63, |
| 75 | 63, 63, 63, 63, 63, 63, 63, 63 |
| 76 | }, { |
| 77 | 4, 5, 6, 7, 9, 11, 13, 15, |
| 78 | 5, 5, 7, 8, 11, 13, 15, 17, |
| 79 | 6, 7, 9, 11, 13, 15, 15, 17, |
| 80 | 7, 7, 9, 11, 13, 15, 17, 19, |
| 81 | 7, 9, 11, 13, 14, 16, 19, 23, |
| 82 | 9, 11, 13, 14, 16, 19, 23, 29, |
| 83 | 9, 11, 13, 15, 17, 21, 28, 35, |
| 84 | 11, 13, 16, 17, 21, 28, 35, 41 |
| 85 | }, { |
| 86 | 4, 4, 5, 5, 6, 7, 7, 9, |
| 87 | 4, 4, 5, 6, 7, 7, 9, 9, |
| 88 | 5, 5, 6, 7, 7, 9, 9, 10, |
| 89 | 5, 5, 6, 7, 7, 9, 9, 10, |
| 90 | 5, 6, 7, 7, 8, 9, 10, 12, |
| 91 | 6, 7, 7, 8, 9, 10, 12, 15, |
| 92 | 6, 7, 7, 9, 10, 11, 14, 17, |
| 93 | 7, 7, 9, 10, 11, 14, 17, 21 |
| 94 | }, { |
| 95 | 4, 4, 4, 4, 4, 4, 4, 4, |
| 96 | 4, 4, 4, 4, 4, 4, 4, 4, |
| 97 | 4, 4, 4, 4, 4, 4, 4, 4, |
| 98 | 4, 4, 4, 4, 4, 4, 4, 5, |
| 99 | 4, 4, 4, 4, 4, 4, 5, 5, |
| 100 | 4, 4, 4, 4, 4, 5, 5, 6, |
| 101 | 4, 4, 4, 4, 5, 5, 6, 7, |
| 102 | 4, 4, 4, 4, 5, 6, 7, 7 |
| 103 | } |
| 104 | }; |
| 105 | |
| 106 | static const uint8_t QMAT_CHROMA[4][64] = { |
| 107 | { |
| 108 | 4, 7, 9, 11, 13, 14, 63, 63, |
| 109 | 7, 7, 11, 12, 14, 63, 63, 63, |
| 110 | 9, 11, 13, 14, 63, 63, 63, 63, |
| 111 | 11, 11, 13, 14, 63, 63, 63, 63, |
| 112 | 11, 13, 14, 63, 63, 63, 63, 63, |
| 113 | 13, 14, 63, 63, 63, 63, 63, 63, |
| 114 | 13, 63, 63, 63, 63, 63, 63, 63, |
| 115 | 63, 63, 63, 63, 63, 63, 63, 63 |
| 116 | }, { |
| 117 | 4, 5, 6, 7, 9, 11, 13, 15, |
| 118 | 5, 5, 7, 8, 11, 13, 15, 17, |
| 119 | 6, 7, 9, 11, 13, 15, 15, 17, |
| 120 | 7, 7, 9, 11, 13, 15, 17, 19, |
| 121 | 7, 9, 11, 13, 14, 16, 19, 23, |
| 122 | 9, 11, 13, 14, 16, 19, 23, 29, |
| 123 | 9, 11, 13, 15, 17, 21, 28, 35, |
| 124 | 11, 13, 16, 17, 21, 28, 35, 41 |
| 125 | }, { |
| 126 | 4, 4, 5, 5, 6, 7, 7, 9, |
| 127 | 4, 4, 5, 6, 7, 7, 9, 9, |
| 128 | 5, 5, 6, 7, 7, 9, 9, 10, |
| 129 | 5, 5, 6, 7, 7, 9, 9, 10, |
| 130 | 5, 6, 7, 7, 8, 9, 10, 12, |
| 131 | 6, 7, 7, 8, 9, 10, 12, 15, |
| 132 | 6, 7, 7, 9, 10, 11, 14, 17, |
| 133 | 7, 7, 9, 10, 11, 14, 17, 21 |
| 134 | }, { |
| 135 | 4, 4, 4, 4, 4, 4, 4, 4, |
| 136 | 4, 4, 4, 4, 4, 4, 4, 4, |
| 137 | 4, 4, 4, 4, 4, 4, 4, 4, |
| 138 | 4, 4, 4, 4, 4, 4, 4, 5, |
| 139 | 4, 4, 4, 4, 4, 4, 5, 5, |
| 140 | 4, 4, 4, 4, 4, 5, 5, 6, |
| 141 | 4, 4, 4, 4, 5, 5, 6, 7, |
| 142 | 4, 4, 4, 4, 5, 6, 7, 7 |
| 143 | } |
| 144 | }; |
| 145 | |
| 146 | |
| 147 | typedef struct { |
| 148 | FDCTDSPContext fdsp; |
| 149 | uint8_t* fill_y; |
| 150 | uint8_t* fill_u; |
| 151 | uint8_t* fill_v; |
| 152 | |
| 153 | int qmat_luma[16][64]; |
| 154 | int qmat_chroma[16][64]; |
| 155 | } ProresContext; |
| 156 | |
| 157 | static void encode_codeword(PutBitContext *pb, int val, int codebook) |
| 158 | { |
| 159 | unsigned int rice_order, exp_order, switch_bits, first_exp, exp, zeros, |
| 160 | mask; |
| 161 | |
| 162 | /* number of bits to switch between rice and exp golomb */ |
| 163 | switch_bits = codebook & 3; |
| 164 | rice_order = codebook >> 5; |
| 165 | exp_order = (codebook >> 2) & 7; |
| 166 | |
| 167 | first_exp = ((switch_bits + 1) << rice_order); |
| 168 | |
| 169 | if (val >= first_exp) { /* exp golomb */ |
| 170 | val -= first_exp; |
| 171 | val += (1 << exp_order); |
| 172 | exp = av_log2(val); |
| 173 | zeros = exp - exp_order + switch_bits + 1; |
| 174 | put_bits(pb, zeros, 0); |
| 175 | put_bits(pb, exp + 1, val); |
| 176 | } else if (rice_order) { |
| 177 | mask = (1 << rice_order) - 1; |
| 178 | put_bits(pb, (val >> rice_order), 0); |
| 179 | put_bits(pb, 1, 1); |
| 180 | put_bits(pb, rice_order, val & mask); |
| 181 | } else { |
| 182 | put_bits(pb, val, 0); |
| 183 | put_bits(pb, 1, 1); |
| 184 | } |
| 185 | } |
| 186 | |
| 187 | #define QSCALE(qmat,ind,val) ((val) / ((qmat)[ind])) |
| 188 | #define TO_GOLOMB(val) (((val) << 1) ^ ((val) >> 31)) |
| 189 | #define DIFF_SIGN(val, sign) (((val) >> 31) ^ (sign)) |
| 190 | #define IS_NEGATIVE(val) ((((val) >> 31) ^ -1) + 1) |
| 191 | #define TO_GOLOMB2(val,sign) ((val)==0 ? 0 : ((val) << 1) + (sign)) |
| 192 | |
| 193 | static av_always_inline int get_level(int val) |
| 194 | { |
| 195 | int sign = (val >> 31); |
| 196 | return (val ^ sign) - sign; |
| 197 | } |
| 198 | |
| 199 | #define FIRST_DC_CB 0xB8 |
| 200 | |
| 201 | static const uint8_t dc_codebook[7] = { 0x04, 0x28, 0x28, 0x4D, 0x4D, 0x70, 0x70}; |
| 202 | |
| 203 | static void encode_dc_coeffs(PutBitContext *pb, int16_t *in, |
| 204 | int blocks_per_slice, int *qmat) |
| 205 | { |
| 206 | int prev_dc, code; |
| 207 | int i, sign, idx; |
| 208 | int new_dc, delta, diff_sign, new_code; |
| 209 | |
| 210 | prev_dc = QSCALE(qmat, 0, in[0] - 16384); |
| 211 | code = TO_GOLOMB(prev_dc); |
| 212 | encode_codeword(pb, code, FIRST_DC_CB); |
| 213 | |
| 214 | code = 5; sign = 0; idx = 64; |
| 215 | for (i = 1; i < blocks_per_slice; i++, idx += 64) { |
| 216 | new_dc = QSCALE(qmat, 0, in[idx] - 16384); |
| 217 | delta = new_dc - prev_dc; |
| 218 | diff_sign = DIFF_SIGN(delta, sign); |
| 219 | new_code = TO_GOLOMB2(get_level(delta), diff_sign); |
| 220 | |
| 221 | encode_codeword(pb, new_code, dc_codebook[FFMIN(code, 6)]); |
| 222 | |
| 223 | code = new_code; |
| 224 | sign = delta >> 31; |
| 225 | prev_dc = new_dc; |
| 226 | } |
| 227 | } |
| 228 | |
| 229 | static const uint8_t run_to_cb[16] = { 0x06, 0x06, 0x05, 0x05, 0x04, 0x29, |
| 230 | 0x29, 0x29, 0x29, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x4C }; |
| 231 | static const uint8_t lev_to_cb[10] = { 0x04, 0x0A, 0x05, 0x06, 0x04, 0x28, |
| 232 | 0x28, 0x28, 0x28, 0x4C }; |
| 233 | |
| 234 | static void encode_ac_coeffs(AVCodecContext *avctx, PutBitContext *pb, |
| 235 | int16_t *in, int blocks_per_slice, int *qmat) |
| 236 | { |
| 237 | int prev_run = 4; |
| 238 | int prev_level = 2; |
| 239 | |
| 240 | int run = 0, level, code, i, j; |
| 241 | for (i = 1; i < 64; i++) { |
| 242 | int indp = progressive_scan[i]; |
| 243 | for (j = 0; j < blocks_per_slice; j++) { |
| 244 | int val = QSCALE(qmat, indp, in[(j << 6) + indp]); |
| 245 | if (val) { |
| 246 | encode_codeword(pb, run, run_to_cb[FFMIN(prev_run, 15)]); |
| 247 | |
| 248 | prev_run = run; |
| 249 | run = 0; |
| 250 | level = get_level(val); |
| 251 | code = level - 1; |
| 252 | |
| 253 | encode_codeword(pb, code, lev_to_cb[FFMIN(prev_level, 9)]); |
| 254 | |
| 255 | prev_level = level; |
| 256 | |
| 257 | put_bits(pb, 1, IS_NEGATIVE(val)); |
| 258 | } else { |
| 259 | ++run; |
| 260 | } |
| 261 | } |
| 262 | } |
| 263 | } |
| 264 | |
| 265 | static void get(uint8_t *pixels, int stride, int16_t* block) |
| 266 | { |
| 267 | int i; |
| 268 | |
| 269 | for (i = 0; i < 8; i++) { |
| 270 | AV_WN64(block, AV_RN64(pixels)); |
| 271 | AV_WN64(block+4, AV_RN64(pixels+8)); |
| 272 | pixels += stride; |
| 273 | block += 8; |
| 274 | } |
| 275 | } |
| 276 | |
| 277 | static void fdct_get(FDCTDSPContext *fdsp, uint8_t *pixels, int stride, int16_t* block) |
| 278 | { |
| 279 | get(pixels, stride, block); |
| 280 | fdsp->fdct(block); |
| 281 | } |
| 282 | |
| 283 | static int encode_slice_plane(AVCodecContext *avctx, int mb_count, |
| 284 | uint8_t *src, int src_stride, uint8_t *buf, unsigned buf_size, |
| 285 | int *qmat, int chroma) |
| 286 | { |
| 287 | ProresContext* ctx = avctx->priv_data; |
| 288 | FDCTDSPContext *fdsp = &ctx->fdsp; |
| 289 | DECLARE_ALIGNED(16, int16_t, blocks)[DEFAULT_SLICE_MB_WIDTH << 8], *block; |
| 290 | int i, blocks_per_slice; |
| 291 | PutBitContext pb; |
| 292 | |
| 293 | block = blocks; |
| 294 | for (i = 0; i < mb_count; i++) { |
| 295 | fdct_get(fdsp, src, src_stride, block + (0 << 6)); |
| 296 | fdct_get(fdsp, src + 8 * src_stride, src_stride, block + ((2 - chroma) << 6)); |
| 297 | if (!chroma) { |
| 298 | fdct_get(fdsp, src + 16, src_stride, block + (1 << 6)); |
| 299 | fdct_get(fdsp, src + 16 + 8 * src_stride, src_stride, block + (3 << 6)); |
| 300 | } |
| 301 | |
| 302 | block += (256 >> chroma); |
| 303 | src += (32 >> chroma); |
| 304 | } |
| 305 | |
| 306 | blocks_per_slice = mb_count << (2 - chroma); |
| 307 | init_put_bits(&pb, buf, buf_size << 3); |
| 308 | |
| 309 | encode_dc_coeffs(&pb, blocks, blocks_per_slice, qmat); |
| 310 | encode_ac_coeffs(avctx, &pb, blocks, blocks_per_slice, qmat); |
| 311 | |
| 312 | flush_put_bits(&pb); |
| 313 | return put_bits_ptr(&pb) - pb.buf; |
| 314 | } |
| 315 | |
| 316 | static av_always_inline unsigned encode_slice_data(AVCodecContext *avctx, |
| 317 | uint8_t *dest_y, uint8_t *dest_u, uint8_t *dest_v, int luma_stride, |
| 318 | int chroma_stride, unsigned mb_count, uint8_t *buf, unsigned data_size, |
| 319 | unsigned* y_data_size, unsigned* u_data_size, unsigned* v_data_size, |
| 320 | int qp) |
| 321 | { |
| 322 | ProresContext* ctx = avctx->priv_data; |
| 323 | |
| 324 | *y_data_size = encode_slice_plane(avctx, mb_count, dest_y, luma_stride, |
| 325 | buf, data_size, ctx->qmat_luma[qp - 1], 0); |
| 326 | |
| 327 | if (!(avctx->flags & CODEC_FLAG_GRAY)) { |
| 328 | *u_data_size = encode_slice_plane(avctx, mb_count, dest_u, |
| 329 | chroma_stride, buf + *y_data_size, data_size - *y_data_size, |
| 330 | ctx->qmat_chroma[qp - 1], 1); |
| 331 | |
| 332 | *v_data_size = encode_slice_plane(avctx, mb_count, dest_v, |
| 333 | chroma_stride, buf + *y_data_size + *u_data_size, |
| 334 | data_size - *y_data_size - *u_data_size, |
| 335 | ctx->qmat_chroma[qp - 1], 1); |
| 336 | } |
| 337 | |
| 338 | return *y_data_size + *u_data_size + *v_data_size; |
| 339 | } |
| 340 | |
| 341 | static void subimage_with_fill(uint16_t *src, unsigned x, unsigned y, |
| 342 | unsigned stride, unsigned width, unsigned height, uint16_t *dst, |
| 343 | unsigned dst_width, unsigned dst_height) |
| 344 | { |
| 345 | |
| 346 | int box_width = FFMIN(width - x, dst_width); |
| 347 | int box_height = FFMIN(height - y, dst_height); |
| 348 | int i, j, src_stride = stride >> 1; |
| 349 | uint16_t last_pix, *last_line; |
| 350 | |
| 351 | src += y * src_stride + x; |
| 352 | for (i = 0; i < box_height; ++i) { |
| 353 | for (j = 0; j < box_width; ++j) { |
| 354 | dst[j] = src[j]; |
| 355 | } |
| 356 | last_pix = dst[j - 1]; |
| 357 | for (; j < dst_width; j++) |
| 358 | dst[j] = last_pix; |
| 359 | src += src_stride; |
| 360 | dst += dst_width; |
| 361 | } |
| 362 | last_line = dst - dst_width; |
| 363 | for (; i < dst_height; i++) { |
| 364 | for (j = 0; j < dst_width; ++j) { |
| 365 | dst[j] = last_line[j]; |
| 366 | } |
| 367 | dst += dst_width; |
| 368 | } |
| 369 | } |
| 370 | |
| 371 | static int encode_slice(AVCodecContext *avctx, const AVFrame *pic, int mb_x, |
| 372 | int mb_y, unsigned mb_count, uint8_t *buf, unsigned data_size, |
| 373 | int unsafe, int *qp) |
| 374 | { |
| 375 | int luma_stride, chroma_stride; |
| 376 | int hdr_size = 6, slice_size; |
| 377 | uint8_t *dest_y, *dest_u, *dest_v; |
| 378 | unsigned y_data_size = 0, u_data_size = 0, v_data_size = 0; |
| 379 | ProresContext* ctx = avctx->priv_data; |
| 380 | int tgt_bits = (mb_count * bitrate_table[avctx->profile]) >> 2; |
| 381 | int low_bytes = (tgt_bits - (tgt_bits >> 3)) >> 3; // 12% bitrate fluctuation |
| 382 | int high_bytes = (tgt_bits + (tgt_bits >> 3)) >> 3; |
| 383 | |
| 384 | luma_stride = pic->linesize[0]; |
| 385 | chroma_stride = pic->linesize[1]; |
| 386 | |
| 387 | dest_y = pic->data[0] + (mb_y << 4) * luma_stride + (mb_x << 5); |
| 388 | dest_u = pic->data[1] + (mb_y << 4) * chroma_stride + (mb_x << 4); |
| 389 | dest_v = pic->data[2] + (mb_y << 4) * chroma_stride + (mb_x << 4); |
| 390 | |
| 391 | if (unsafe) { |
| 392 | |
| 393 | subimage_with_fill((uint16_t *) pic->data[0], mb_x << 4, mb_y << 4, |
| 394 | luma_stride, avctx->width, avctx->height, |
| 395 | (uint16_t *) ctx->fill_y, mb_count << 4, 16); |
| 396 | subimage_with_fill((uint16_t *) pic->data[1], mb_x << 3, mb_y << 4, |
| 397 | chroma_stride, avctx->width >> 1, avctx->height, |
| 398 | (uint16_t *) ctx->fill_u, mb_count << 3, 16); |
| 399 | subimage_with_fill((uint16_t *) pic->data[2], mb_x << 3, mb_y << 4, |
| 400 | chroma_stride, avctx->width >> 1, avctx->height, |
| 401 | (uint16_t *) ctx->fill_v, mb_count << 3, 16); |
| 402 | |
| 403 | encode_slice_data(avctx, ctx->fill_y, ctx->fill_u, ctx->fill_v, |
| 404 | mb_count << 5, mb_count << 4, mb_count, buf + hdr_size, |
| 405 | data_size - hdr_size, &y_data_size, &u_data_size, &v_data_size, |
| 406 | *qp); |
| 407 | } else { |
| 408 | slice_size = encode_slice_data(avctx, dest_y, dest_u, dest_v, |
| 409 | luma_stride, chroma_stride, mb_count, buf + hdr_size, |
| 410 | data_size - hdr_size, &y_data_size, &u_data_size, &v_data_size, |
| 411 | *qp); |
| 412 | |
| 413 | if (slice_size > high_bytes && *qp < qp_end_table[avctx->profile]) { |
| 414 | do { |
| 415 | *qp += 1; |
| 416 | slice_size = encode_slice_data(avctx, dest_y, dest_u, dest_v, |
| 417 | luma_stride, chroma_stride, mb_count, buf + hdr_size, |
| 418 | data_size - hdr_size, &y_data_size, &u_data_size, |
| 419 | &v_data_size, *qp); |
| 420 | } while (slice_size > high_bytes && *qp < qp_end_table[avctx->profile]); |
| 421 | } else if (slice_size < low_bytes && *qp |
| 422 | > qp_start_table[avctx->profile]) { |
| 423 | do { |
| 424 | *qp -= 1; |
| 425 | slice_size = encode_slice_data(avctx, dest_y, dest_u, dest_v, |
| 426 | luma_stride, chroma_stride, mb_count, buf + hdr_size, |
| 427 | data_size - hdr_size, &y_data_size, &u_data_size, |
| 428 | &v_data_size, *qp); |
| 429 | } while (slice_size < low_bytes && *qp > qp_start_table[avctx->profile]); |
| 430 | } |
| 431 | } |
| 432 | |
| 433 | buf[0] = hdr_size << 3; |
| 434 | buf[1] = *qp; |
| 435 | AV_WB16(buf + 2, y_data_size); |
| 436 | AV_WB16(buf + 4, u_data_size); |
| 437 | |
| 438 | return hdr_size + y_data_size + u_data_size + v_data_size; |
| 439 | } |
| 440 | |
| 441 | static int prores_encode_picture(AVCodecContext *avctx, const AVFrame *pic, |
| 442 | uint8_t *buf, const int buf_size) |
| 443 | { |
| 444 | int mb_width = (avctx->width + 15) >> 4; |
| 445 | int mb_height = (avctx->height + 15) >> 4; |
| 446 | int hdr_size, sl_size, i; |
| 447 | int mb_y, sl_data_size, qp; |
| 448 | int unsafe_bot, unsafe_right; |
| 449 | uint8_t *sl_data, *sl_data_sizes; |
| 450 | int slice_per_line = 0, rem = mb_width; |
| 451 | |
| 452 | for (i = av_log2(DEFAULT_SLICE_MB_WIDTH); i >= 0; --i) { |
| 453 | slice_per_line += rem >> i; |
| 454 | rem &= (1 << i) - 1; |
| 455 | } |
| 456 | |
| 457 | qp = qp_start_table[avctx->profile]; |
| 458 | hdr_size = 8; sl_data_size = buf_size - hdr_size; |
| 459 | sl_data_sizes = buf + hdr_size; |
| 460 | sl_data = sl_data_sizes + (slice_per_line * mb_height * 2); |
| 461 | for (mb_y = 0; mb_y < mb_height; mb_y++) { |
| 462 | int mb_x = 0; |
| 463 | int slice_mb_count = DEFAULT_SLICE_MB_WIDTH; |
| 464 | while (mb_x < mb_width) { |
| 465 | while (mb_width - mb_x < slice_mb_count) |
| 466 | slice_mb_count >>= 1; |
| 467 | |
| 468 | unsafe_bot = (avctx->height & 0xf) && (mb_y == mb_height - 1); |
| 469 | unsafe_right = (avctx->width & 0xf) && (mb_x + slice_mb_count == mb_width); |
| 470 | |
| 471 | sl_size = encode_slice(avctx, pic, mb_x, mb_y, slice_mb_count, |
| 472 | sl_data, sl_data_size, unsafe_bot || unsafe_right, &qp); |
| 473 | |
| 474 | bytestream_put_be16(&sl_data_sizes, sl_size); |
| 475 | sl_data += sl_size; |
| 476 | sl_data_size -= sl_size; |
| 477 | mb_x += slice_mb_count; |
| 478 | } |
| 479 | } |
| 480 | |
| 481 | buf[0] = hdr_size << 3; |
| 482 | AV_WB32(buf + 1, sl_data - buf); |
| 483 | AV_WB16(buf + 5, slice_per_line * mb_height); |
| 484 | buf[7] = av_log2(DEFAULT_SLICE_MB_WIDTH) << 4; |
| 485 | |
| 486 | return sl_data - buf; |
| 487 | } |
| 488 | |
| 489 | static int prores_encode_frame(AVCodecContext *avctx, AVPacket *pkt, |
| 490 | const AVFrame *pict, int *got_packet) |
| 491 | { |
| 492 | int header_size = 148; |
| 493 | uint8_t *buf; |
| 494 | int pic_size, ret; |
| 495 | int frame_size = FFALIGN(avctx->width, 16) * FFALIGN(avctx->height, 16)*16 + 500 + FF_MIN_BUFFER_SIZE; //FIXME choose tighter limit |
| 496 | |
| 497 | |
| 498 | if ((ret = ff_alloc_packet2(avctx, pkt, frame_size + FF_MIN_BUFFER_SIZE)) < 0) |
| 499 | return ret; |
| 500 | |
| 501 | buf = pkt->data; |
| 502 | pic_size = prores_encode_picture(avctx, pict, buf + header_size + 8, |
| 503 | pkt->size - header_size - 8); |
| 504 | |
| 505 | bytestream_put_be32(&buf, pic_size + 8 + header_size); |
| 506 | bytestream_put_buffer(&buf, "icpf", 4); |
| 507 | |
| 508 | bytestream_put_be16(&buf, header_size); |
| 509 | bytestream_put_be16(&buf, 0); |
| 510 | bytestream_put_buffer(&buf, "fmpg", 4); |
| 511 | bytestream_put_be16(&buf, avctx->width); |
| 512 | bytestream_put_be16(&buf, avctx->height); |
| 513 | *buf++ = 0x83; // {10}(422){00}{00}(frame){11} |
| 514 | *buf++ = 0; |
| 515 | *buf++ = 2; |
| 516 | *buf++ = 2; |
| 517 | *buf++ = 6; |
| 518 | *buf++ = 32; |
| 519 | *buf++ = 0; |
| 520 | *buf++ = 3; |
| 521 | |
| 522 | bytestream_put_buffer(&buf, QMAT_LUMA[avctx->profile], 64); |
| 523 | bytestream_put_buffer(&buf, QMAT_CHROMA[avctx->profile], 64); |
| 524 | |
| 525 | pkt->flags |= AV_PKT_FLAG_KEY; |
| 526 | pkt->size = pic_size + 8 + header_size; |
| 527 | *got_packet = 1; |
| 528 | |
| 529 | return 0; |
| 530 | } |
| 531 | |
| 532 | static void scale_mat(const uint8_t* src, int* dst, int scale) |
| 533 | { |
| 534 | int i; |
| 535 | for (i = 0; i < 64; i++) |
| 536 | dst[i] = src[i] * scale; |
| 537 | } |
| 538 | |
| 539 | static av_cold int prores_encode_init(AVCodecContext *avctx) |
| 540 | { |
| 541 | int i; |
| 542 | ProresContext* ctx = avctx->priv_data; |
| 543 | |
| 544 | if (avctx->pix_fmt != AV_PIX_FMT_YUV422P10) { |
| 545 | av_log(avctx, AV_LOG_ERROR, "need YUV422P10\n"); |
| 546 | return -1; |
| 547 | } |
| 548 | avctx->bits_per_raw_sample = 10; |
| 549 | |
| 550 | if (avctx->width & 0x1) { |
| 551 | av_log(avctx, AV_LOG_ERROR, |
| 552 | "frame width needs to be multiple of 2\n"); |
| 553 | return -1; |
| 554 | } |
| 555 | |
| 556 | if (avctx->width > 65534 || avctx->height > 65535) { |
| 557 | av_log(avctx, AV_LOG_ERROR, |
| 558 | "The maximum dimensions are 65534x65535\n"); |
| 559 | return AVERROR(EINVAL); |
| 560 | } |
| 561 | |
| 562 | if ((avctx->height & 0xf) || (avctx->width & 0xf)) { |
| 563 | ctx->fill_y = av_malloc(4 * (DEFAULT_SLICE_MB_WIDTH << 8)); |
| 564 | if (!ctx->fill_y) |
| 565 | return AVERROR(ENOMEM); |
| 566 | ctx->fill_u = ctx->fill_y + (DEFAULT_SLICE_MB_WIDTH << 9); |
| 567 | ctx->fill_v = ctx->fill_u + (DEFAULT_SLICE_MB_WIDTH << 8); |
| 568 | } |
| 569 | |
| 570 | if (avctx->profile == FF_PROFILE_UNKNOWN) { |
| 571 | avctx->profile = FF_PROFILE_PRORES_STANDARD; |
| 572 | av_log(avctx, AV_LOG_INFO, |
| 573 | "encoding with ProRes standard (apcn) profile\n"); |
| 574 | |
| 575 | } else if (avctx->profile < FF_PROFILE_PRORES_PROXY |
| 576 | || avctx->profile > FF_PROFILE_PRORES_HQ) { |
| 577 | av_log( |
| 578 | avctx, |
| 579 | AV_LOG_ERROR, |
| 580 | "unknown profile %d, use [0 - apco, 1 - apcs, 2 - apcn (default), 3 - apch]\n", |
| 581 | avctx->profile); |
| 582 | return -1; |
| 583 | } |
| 584 | |
| 585 | ff_fdctdsp_init(&ctx->fdsp, avctx); |
| 586 | |
| 587 | avctx->codec_tag = AV_RL32((const uint8_t*)profiles[avctx->profile].name); |
| 588 | |
| 589 | for (i = 1; i <= 16; i++) { |
| 590 | scale_mat(QMAT_LUMA[avctx->profile] , ctx->qmat_luma[i - 1] , i); |
| 591 | scale_mat(QMAT_CHROMA[avctx->profile], ctx->qmat_chroma[i - 1], i); |
| 592 | } |
| 593 | |
| 594 | avctx->coded_frame = av_frame_alloc(); |
| 595 | avctx->coded_frame->key_frame = 1; |
| 596 | avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I; |
| 597 | |
| 598 | return 0; |
| 599 | } |
| 600 | |
| 601 | static av_cold int prores_encode_close(AVCodecContext *avctx) |
| 602 | { |
| 603 | ProresContext* ctx = avctx->priv_data; |
| 604 | av_freep(&avctx->coded_frame); |
| 605 | av_freep(&ctx->fill_y); |
| 606 | |
| 607 | return 0; |
| 608 | } |
| 609 | |
| 610 | AVCodec ff_prores_aw_encoder = { |
| 611 | .name = "prores_aw", |
| 612 | .long_name = NULL_IF_CONFIG_SMALL("Apple ProRes"), |
| 613 | .type = AVMEDIA_TYPE_VIDEO, |
| 614 | .id = AV_CODEC_ID_PRORES, |
| 615 | .priv_data_size = sizeof(ProresContext), |
| 616 | .init = prores_encode_init, |
| 617 | .close = prores_encode_close, |
| 618 | .encode2 = prores_encode_frame, |
| 619 | .pix_fmts = (const enum AVPixelFormat[]){AV_PIX_FMT_YUV422P10, AV_PIX_FMT_NONE}, |
| 620 | .capabilities = CODEC_CAP_FRAME_THREADS | CODEC_CAP_INTRA_ONLY, |
| 621 | .profiles = profiles |
| 622 | }; |
| 623 | |
| 624 | AVCodec ff_prores_encoder = { |
| 625 | .name = "prores", |
| 626 | .long_name = NULL_IF_CONFIG_SMALL("Apple ProRes"), |
| 627 | .type = AVMEDIA_TYPE_VIDEO, |
| 628 | .id = AV_CODEC_ID_PRORES, |
| 629 | .priv_data_size = sizeof(ProresContext), |
| 630 | .init = prores_encode_init, |
| 631 | .close = prores_encode_close, |
| 632 | .encode2 = prores_encode_frame, |
| 633 | .pix_fmts = (const enum AVPixelFormat[]){AV_PIX_FMT_YUV422P10, AV_PIX_FMT_NONE}, |
| 634 | .capabilities = CODEC_CAP_FRAME_THREADS | CODEC_CAP_INTRA_ONLY, |
| 635 | .profiles = profiles |
| 636 | }; |