| 1 | /* |
| 2 | * VC3/DNxHD encoder |
| 3 | * Copyright (c) 2007 Baptiste Coudurier <baptiste dot coudurier at smartjog dot com> |
| 4 | * Copyright (c) 2011 MirriAd Ltd |
| 5 | * |
| 6 | * VC-3 encoder funded by the British Broadcasting Corporation |
| 7 | * 10 bit support added by MirriAd Ltd, Joseph Artsimovich <joseph@mirriad.com> |
| 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/attributes.h" |
| 27 | #include "libavutil/internal.h" |
| 28 | #include "libavutil/opt.h" |
| 29 | #include "libavutil/timer.h" |
| 30 | |
| 31 | #include "avcodec.h" |
| 32 | #include "blockdsp.h" |
| 33 | #include "fdctdsp.h" |
| 34 | #include "internal.h" |
| 35 | #include "mpegvideo.h" |
| 36 | #include "pixblockdsp.h" |
| 37 | #include "dnxhdenc.h" |
| 38 | |
| 39 | |
| 40 | // The largest value that will not lead to overflow for 10bit samples. |
| 41 | #define DNX10BIT_QMAT_SHIFT 18 |
| 42 | #define RC_VARIANCE 1 // use variance or ssd for fast rc |
| 43 | #define LAMBDA_FRAC_BITS 10 |
| 44 | |
| 45 | #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM |
| 46 | static const AVOption options[] = { |
| 47 | { "nitris_compat", "encode with Avid Nitris compatibility", |
| 48 | offsetof(DNXHDEncContext, nitris_compat), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE }, |
| 49 | { NULL } |
| 50 | }; |
| 51 | |
| 52 | static const AVClass dnxhd_class = { |
| 53 | .class_name = "dnxhd", |
| 54 | .item_name = av_default_item_name, |
| 55 | .option = options, |
| 56 | .version = LIBAVUTIL_VERSION_INT, |
| 57 | }; |
| 58 | |
| 59 | static void dnxhd_8bit_get_pixels_8x4_sym(int16_t *av_restrict block, |
| 60 | const uint8_t *pixels, |
| 61 | ptrdiff_t line_size) |
| 62 | { |
| 63 | int i; |
| 64 | for (i = 0; i < 4; i++) { |
| 65 | block[0] = pixels[0]; |
| 66 | block[1] = pixels[1]; |
| 67 | block[2] = pixels[2]; |
| 68 | block[3] = pixels[3]; |
| 69 | block[4] = pixels[4]; |
| 70 | block[5] = pixels[5]; |
| 71 | block[6] = pixels[6]; |
| 72 | block[7] = pixels[7]; |
| 73 | pixels += line_size; |
| 74 | block += 8; |
| 75 | } |
| 76 | memcpy(block, block - 8, sizeof(*block) * 8); |
| 77 | memcpy(block + 8, block - 16, sizeof(*block) * 8); |
| 78 | memcpy(block + 16, block - 24, sizeof(*block) * 8); |
| 79 | memcpy(block + 24, block - 32, sizeof(*block) * 8); |
| 80 | } |
| 81 | |
| 82 | static av_always_inline |
| 83 | void dnxhd_10bit_get_pixels_8x4_sym(int16_t *av_restrict block, |
| 84 | const uint8_t *pixels, |
| 85 | ptrdiff_t line_size) |
| 86 | { |
| 87 | int i; |
| 88 | const uint16_t* pixels16 = (const uint16_t*)pixels; |
| 89 | line_size >>= 1; |
| 90 | |
| 91 | for (i = 0; i < 4; i++) { |
| 92 | block[0] = pixels16[0]; block[1] = pixels16[1]; |
| 93 | block[2] = pixels16[2]; block[3] = pixels16[3]; |
| 94 | block[4] = pixels16[4]; block[5] = pixels16[5]; |
| 95 | block[6] = pixels16[6]; block[7] = pixels16[7]; |
| 96 | pixels16 += line_size; |
| 97 | block += 8; |
| 98 | } |
| 99 | memcpy(block, block - 8, sizeof(*block) * 8); |
| 100 | memcpy(block + 8, block - 16, sizeof(*block) * 8); |
| 101 | memcpy(block + 16, block - 24, sizeof(*block) * 8); |
| 102 | memcpy(block + 24, block - 32, sizeof(*block) * 8); |
| 103 | } |
| 104 | |
| 105 | static int dnxhd_10bit_dct_quantize(MpegEncContext *ctx, int16_t *block, |
| 106 | int n, int qscale, int *overflow) |
| 107 | { |
| 108 | const uint8_t *scantable= ctx->intra_scantable.scantable; |
| 109 | const int *qmat = n<4 ? ctx->q_intra_matrix[qscale] : ctx->q_chroma_intra_matrix[qscale]; |
| 110 | int last_non_zero = 0; |
| 111 | int i; |
| 112 | |
| 113 | ctx->fdsp.fdct(block); |
| 114 | |
| 115 | // Divide by 4 with rounding, to compensate scaling of DCT coefficients |
| 116 | block[0] = (block[0] + 2) >> 2; |
| 117 | |
| 118 | for (i = 1; i < 64; ++i) { |
| 119 | int j = scantable[i]; |
| 120 | int sign = FF_SIGNBIT(block[j]); |
| 121 | int level = (block[j] ^ sign) - sign; |
| 122 | level = level * qmat[j] >> DNX10BIT_QMAT_SHIFT; |
| 123 | block[j] = (level ^ sign) - sign; |
| 124 | if (level) |
| 125 | last_non_zero = i; |
| 126 | } |
| 127 | |
| 128 | return last_non_zero; |
| 129 | } |
| 130 | |
| 131 | static av_cold int dnxhd_init_vlc(DNXHDEncContext *ctx) |
| 132 | { |
| 133 | int i, j, level, run; |
| 134 | int max_level = 1 << (ctx->cid_table->bit_depth + 2); |
| 135 | |
| 136 | FF_ALLOCZ_ARRAY_OR_GOTO(ctx->m.avctx, ctx->vlc_codes, |
| 137 | max_level, 4 * sizeof(*ctx->vlc_codes), fail); |
| 138 | FF_ALLOCZ_ARRAY_OR_GOTO(ctx->m.avctx, ctx->vlc_bits, |
| 139 | max_level, 4 * sizeof(*ctx->vlc_bits), fail); |
| 140 | FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->run_codes, |
| 141 | 63 * 2, fail); |
| 142 | FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->run_bits, |
| 143 | 63, fail); |
| 144 | |
| 145 | ctx->vlc_codes += max_level * 2; |
| 146 | ctx->vlc_bits += max_level * 2; |
| 147 | for (level = -max_level; level < max_level; level++) { |
| 148 | for (run = 0; run < 2; run++) { |
| 149 | int index = (level << 1) | run; |
| 150 | int sign, offset = 0, alevel = level; |
| 151 | |
| 152 | MASK_ABS(sign, alevel); |
| 153 | if (alevel > 64) { |
| 154 | offset = (alevel - 1) >> 6; |
| 155 | alevel -= offset << 6; |
| 156 | } |
| 157 | for (j = 0; j < 257; j++) { |
| 158 | if (ctx->cid_table->ac_level[j] >> 1 == alevel && |
| 159 | (!offset || (ctx->cid_table->ac_flags[j] & 1) && offset) && |
| 160 | (!run || (ctx->cid_table->ac_flags[j] & 2) && run)) { |
| 161 | av_assert1(!ctx->vlc_codes[index]); |
| 162 | if (alevel) { |
| 163 | ctx->vlc_codes[index] = |
| 164 | (ctx->cid_table->ac_codes[j] << 1) | (sign & 1); |
| 165 | ctx->vlc_bits[index] = ctx->cid_table->ac_bits[j] + 1; |
| 166 | } else { |
| 167 | ctx->vlc_codes[index] = ctx->cid_table->ac_codes[j]; |
| 168 | ctx->vlc_bits[index] = ctx->cid_table->ac_bits[j]; |
| 169 | } |
| 170 | break; |
| 171 | } |
| 172 | } |
| 173 | av_assert0(!alevel || j < 257); |
| 174 | if (offset) { |
| 175 | ctx->vlc_codes[index] = |
| 176 | (ctx->vlc_codes[index] << ctx->cid_table->index_bits) | offset; |
| 177 | ctx->vlc_bits[index] += ctx->cid_table->index_bits; |
| 178 | } |
| 179 | } |
| 180 | } |
| 181 | for (i = 0; i < 62; i++) { |
| 182 | int run = ctx->cid_table->run[i]; |
| 183 | av_assert0(run < 63); |
| 184 | ctx->run_codes[run] = ctx->cid_table->run_codes[i]; |
| 185 | ctx->run_bits[run] = ctx->cid_table->run_bits[i]; |
| 186 | } |
| 187 | return 0; |
| 188 | fail: |
| 189 | return AVERROR(ENOMEM); |
| 190 | } |
| 191 | |
| 192 | static av_cold int dnxhd_init_qmat(DNXHDEncContext *ctx, int lbias, int cbias) |
| 193 | { |
| 194 | // init first elem to 1 to avoid div by 0 in convert_matrix |
| 195 | uint16_t weight_matrix[64] = { 1, }; // convert_matrix needs uint16_t* |
| 196 | int qscale, i; |
| 197 | const uint8_t *luma_weight_table = ctx->cid_table->luma_weight; |
| 198 | const uint8_t *chroma_weight_table = ctx->cid_table->chroma_weight; |
| 199 | |
| 200 | FF_ALLOCZ_ARRAY_OR_GOTO(ctx->m.avctx, ctx->qmatrix_l, |
| 201 | (ctx->m.avctx->qmax + 1), 64 * sizeof(int), fail); |
| 202 | FF_ALLOCZ_ARRAY_OR_GOTO(ctx->m.avctx, ctx->qmatrix_c, |
| 203 | (ctx->m.avctx->qmax + 1), 64 * sizeof(int), fail); |
| 204 | FF_ALLOCZ_ARRAY_OR_GOTO(ctx->m.avctx, ctx->qmatrix_l16, |
| 205 | (ctx->m.avctx->qmax + 1), 64 * 2 * sizeof(uint16_t), |
| 206 | fail); |
| 207 | FF_ALLOCZ_ARRAY_OR_GOTO(ctx->m.avctx, ctx->qmatrix_c16, |
| 208 | (ctx->m.avctx->qmax + 1), 64 * 2 * sizeof(uint16_t), |
| 209 | fail); |
| 210 | |
| 211 | if (ctx->cid_table->bit_depth == 8) { |
| 212 | for (i = 1; i < 64; i++) { |
| 213 | int j = ctx->m.idsp.idct_permutation[ff_zigzag_direct[i]]; |
| 214 | weight_matrix[j] = ctx->cid_table->luma_weight[i]; |
| 215 | } |
| 216 | ff_convert_matrix(&ctx->m, ctx->qmatrix_l, ctx->qmatrix_l16, |
| 217 | weight_matrix, ctx->m.intra_quant_bias, 1, |
| 218 | ctx->m.avctx->qmax, 1); |
| 219 | for (i = 1; i < 64; i++) { |
| 220 | int j = ctx->m.idsp.idct_permutation[ff_zigzag_direct[i]]; |
| 221 | weight_matrix[j] = ctx->cid_table->chroma_weight[i]; |
| 222 | } |
| 223 | ff_convert_matrix(&ctx->m, ctx->qmatrix_c, ctx->qmatrix_c16, |
| 224 | weight_matrix, ctx->m.intra_quant_bias, 1, |
| 225 | ctx->m.avctx->qmax, 1); |
| 226 | |
| 227 | for (qscale = 1; qscale <= ctx->m.avctx->qmax; qscale++) { |
| 228 | for (i = 0; i < 64; i++) { |
| 229 | ctx->qmatrix_l[qscale][i] <<= 2; |
| 230 | ctx->qmatrix_c[qscale][i] <<= 2; |
| 231 | ctx->qmatrix_l16[qscale][0][i] <<= 2; |
| 232 | ctx->qmatrix_l16[qscale][1][i] <<= 2; |
| 233 | ctx->qmatrix_c16[qscale][0][i] <<= 2; |
| 234 | ctx->qmatrix_c16[qscale][1][i] <<= 2; |
| 235 | } |
| 236 | } |
| 237 | } else { |
| 238 | // 10-bit |
| 239 | for (qscale = 1; qscale <= ctx->m.avctx->qmax; qscale++) { |
| 240 | for (i = 1; i < 64; i++) { |
| 241 | int j = ctx->m.idsp.idct_permutation[ff_zigzag_direct[i]]; |
| 242 | |
| 243 | /* The quantization formula from the VC-3 standard is: |
| 244 | * quantized = sign(block[i]) * floor(abs(block[i]/s) * p / |
| 245 | * (qscale * weight_table[i])) |
| 246 | * Where p is 32 for 8-bit samples and 8 for 10-bit ones. |
| 247 | * The s factor compensates scaling of DCT coefficients done by |
| 248 | * the DCT routines, and therefore is not present in standard. |
| 249 | * It's 8 for 8-bit samples and 4 for 10-bit ones. |
| 250 | * We want values of ctx->qtmatrix_l and ctx->qtmatrix_r to be: |
| 251 | * ((1 << DNX10BIT_QMAT_SHIFT) * (p / s)) / |
| 252 | * (qscale * weight_table[i]) |
| 253 | * For 10-bit samples, p / s == 2 */ |
| 254 | ctx->qmatrix_l[qscale][j] = (1 << (DNX10BIT_QMAT_SHIFT + 1)) / |
| 255 | (qscale * luma_weight_table[i]); |
| 256 | ctx->qmatrix_c[qscale][j] = (1 << (DNX10BIT_QMAT_SHIFT + 1)) / |
| 257 | (qscale * chroma_weight_table[i]); |
| 258 | } |
| 259 | } |
| 260 | } |
| 261 | |
| 262 | ctx->m.q_chroma_intra_matrix16 = ctx->qmatrix_c16; |
| 263 | ctx->m.q_chroma_intra_matrix = ctx->qmatrix_c; |
| 264 | ctx->m.q_intra_matrix16 = ctx->qmatrix_l16; |
| 265 | ctx->m.q_intra_matrix = ctx->qmatrix_l; |
| 266 | |
| 267 | return 0; |
| 268 | fail: |
| 269 | return AVERROR(ENOMEM); |
| 270 | } |
| 271 | |
| 272 | static av_cold int dnxhd_init_rc(DNXHDEncContext *ctx) |
| 273 | { |
| 274 | FF_ALLOCZ_ARRAY_OR_GOTO(ctx->m.avctx, ctx->mb_rc, (ctx->m.avctx->qmax + 1), 8160 * sizeof(RCEntry), fail); |
| 275 | if (ctx->m.avctx->mb_decision != FF_MB_DECISION_RD) |
| 276 | FF_ALLOCZ_ARRAY_OR_GOTO(ctx->m.avctx, ctx->mb_cmp, |
| 277 | ctx->m.mb_num, sizeof(RCCMPEntry), fail); |
| 278 | |
| 279 | ctx->frame_bits = (ctx->cid_table->coding_unit_size - |
| 280 | 640 - 4 - ctx->min_padding) * 8; |
| 281 | ctx->qscale = 1; |
| 282 | ctx->lambda = 2 << LAMBDA_FRAC_BITS; // qscale 2 |
| 283 | return 0; |
| 284 | fail: |
| 285 | return AVERROR(ENOMEM); |
| 286 | } |
| 287 | |
| 288 | static av_cold int dnxhd_encode_init(AVCodecContext *avctx) |
| 289 | { |
| 290 | DNXHDEncContext *ctx = avctx->priv_data; |
| 291 | int i, index, bit_depth, ret; |
| 292 | |
| 293 | switch (avctx->pix_fmt) { |
| 294 | case AV_PIX_FMT_YUV422P: |
| 295 | bit_depth = 8; |
| 296 | break; |
| 297 | case AV_PIX_FMT_YUV422P10: |
| 298 | bit_depth = 10; |
| 299 | break; |
| 300 | default: |
| 301 | av_log(avctx, AV_LOG_ERROR, |
| 302 | "pixel format is incompatible with DNxHD\n"); |
| 303 | return AVERROR(EINVAL); |
| 304 | } |
| 305 | |
| 306 | ctx->cid = ff_dnxhd_find_cid(avctx, bit_depth); |
| 307 | if (!ctx->cid) { |
| 308 | av_log(avctx, AV_LOG_ERROR, |
| 309 | "video parameters incompatible with DNxHD. Valid DNxHD profiles:\n"); |
| 310 | ff_dnxhd_print_profiles(avctx, AV_LOG_ERROR); |
| 311 | return AVERROR(EINVAL); |
| 312 | } |
| 313 | av_log(avctx, AV_LOG_DEBUG, "cid %d\n", ctx->cid); |
| 314 | |
| 315 | index = ff_dnxhd_get_cid_table(ctx->cid); |
| 316 | av_assert0(index >= 0); |
| 317 | |
| 318 | ctx->cid_table = &ff_dnxhd_cid_table[index]; |
| 319 | |
| 320 | ctx->m.avctx = avctx; |
| 321 | ctx->m.mb_intra = 1; |
| 322 | ctx->m.h263_aic = 1; |
| 323 | |
| 324 | avctx->bits_per_raw_sample = ctx->cid_table->bit_depth; |
| 325 | |
| 326 | ff_blockdsp_init(&ctx->bdsp, avctx); |
| 327 | ff_fdctdsp_init(&ctx->m.fdsp, avctx); |
| 328 | ff_mpv_idct_init(&ctx->m); |
| 329 | ff_mpegvideoencdsp_init(&ctx->m.mpvencdsp, avctx); |
| 330 | ff_pixblockdsp_init(&ctx->m.pdsp, avctx); |
| 331 | ff_dct_encode_init(&ctx->m); |
| 332 | |
| 333 | if (!ctx->m.dct_quantize) |
| 334 | ctx->m.dct_quantize = ff_dct_quantize_c; |
| 335 | |
| 336 | if (ctx->cid_table->bit_depth == 10) { |
| 337 | ctx->m.dct_quantize = dnxhd_10bit_dct_quantize; |
| 338 | ctx->get_pixels_8x4_sym = dnxhd_10bit_get_pixels_8x4_sym; |
| 339 | ctx->block_width_l2 = 4; |
| 340 | } else { |
| 341 | ctx->get_pixels_8x4_sym = dnxhd_8bit_get_pixels_8x4_sym; |
| 342 | ctx->block_width_l2 = 3; |
| 343 | } |
| 344 | |
| 345 | if (ARCH_X86) |
| 346 | ff_dnxhdenc_init_x86(ctx); |
| 347 | |
| 348 | ctx->m.mb_height = (avctx->height + 15) / 16; |
| 349 | ctx->m.mb_width = (avctx->width + 15) / 16; |
| 350 | |
| 351 | if (avctx->flags & CODEC_FLAG_INTERLACED_DCT) { |
| 352 | ctx->interlaced = 1; |
| 353 | ctx->m.mb_height /= 2; |
| 354 | } |
| 355 | |
| 356 | ctx->m.mb_num = ctx->m.mb_height * ctx->m.mb_width; |
| 357 | |
| 358 | if (avctx->intra_quant_bias != FF_DEFAULT_QUANT_BIAS) |
| 359 | ctx->m.intra_quant_bias = avctx->intra_quant_bias; |
| 360 | // XXX tune lbias/cbias |
| 361 | if ((ret = dnxhd_init_qmat(ctx, ctx->m.intra_quant_bias, 0)) < 0) |
| 362 | return ret; |
| 363 | |
| 364 | /* Avid Nitris hardware decoder requires a minimum amount of padding |
| 365 | * in the coding unit payload */ |
| 366 | if (ctx->nitris_compat) |
| 367 | ctx->min_padding = 1600; |
| 368 | |
| 369 | if ((ret = dnxhd_init_vlc(ctx)) < 0) |
| 370 | return ret; |
| 371 | if ((ret = dnxhd_init_rc(ctx)) < 0) |
| 372 | return ret; |
| 373 | |
| 374 | FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->slice_size, |
| 375 | ctx->m.mb_height * sizeof(uint32_t), fail); |
| 376 | FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->slice_offs, |
| 377 | ctx->m.mb_height * sizeof(uint32_t), fail); |
| 378 | FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->mb_bits, |
| 379 | ctx->m.mb_num * sizeof(uint16_t), fail); |
| 380 | FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->mb_qscale, |
| 381 | ctx->m.mb_num * sizeof(uint8_t), fail); |
| 382 | |
| 383 | avctx->coded_frame = av_frame_alloc(); |
| 384 | if (!avctx->coded_frame) |
| 385 | return AVERROR(ENOMEM); |
| 386 | |
| 387 | avctx->coded_frame->key_frame = 1; |
| 388 | avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I; |
| 389 | |
| 390 | if (avctx->thread_count > MAX_THREADS) { |
| 391 | av_log(avctx, AV_LOG_ERROR, "too many threads\n"); |
| 392 | return AVERROR(EINVAL); |
| 393 | } |
| 394 | |
| 395 | if (avctx->qmax <= 1) { |
| 396 | av_log(avctx, AV_LOG_ERROR, "qmax must be at least 2\n"); |
| 397 | return AVERROR(EINVAL); |
| 398 | } |
| 399 | |
| 400 | ctx->thread[0] = ctx; |
| 401 | for (i = 1; i < avctx->thread_count; i++) { |
| 402 | ctx->thread[i] = av_malloc(sizeof(DNXHDEncContext)); |
| 403 | memcpy(ctx->thread[i], ctx, sizeof(DNXHDEncContext)); |
| 404 | } |
| 405 | |
| 406 | return 0; |
| 407 | fail: // for FF_ALLOCZ_OR_GOTO |
| 408 | return AVERROR(ENOMEM); |
| 409 | } |
| 410 | |
| 411 | static int dnxhd_write_header(AVCodecContext *avctx, uint8_t *buf) |
| 412 | { |
| 413 | DNXHDEncContext *ctx = avctx->priv_data; |
| 414 | static const uint8_t header_prefix[5] = { 0x00, 0x00, 0x02, 0x80, 0x01 }; |
| 415 | |
| 416 | memset(buf, 0, 640); |
| 417 | |
| 418 | memcpy(buf, header_prefix, 5); |
| 419 | buf[5] = ctx->interlaced ? ctx->cur_field + 2 : 0x01; |
| 420 | buf[6] = 0x80; // crc flag off |
| 421 | buf[7] = 0xa0; // reserved |
| 422 | AV_WB16(buf + 0x18, avctx->height >> ctx->interlaced); // ALPF |
| 423 | AV_WB16(buf + 0x1a, avctx->width); // SPL |
| 424 | AV_WB16(buf + 0x1d, avctx->height >> ctx->interlaced); // NAL |
| 425 | |
| 426 | buf[0x21] = ctx->cid_table->bit_depth == 10 ? 0x58 : 0x38; |
| 427 | buf[0x22] = 0x88 + (ctx->interlaced << 2); |
| 428 | AV_WB32(buf + 0x28, ctx->cid); // CID |
| 429 | buf[0x2c] = ctx->interlaced ? 0 : 0x80; |
| 430 | |
| 431 | buf[0x5f] = 0x01; // UDL |
| 432 | |
| 433 | buf[0x167] = 0x02; // reserved |
| 434 | AV_WB16(buf + 0x16a, ctx->m.mb_height * 4 + 4); // MSIPS |
| 435 | buf[0x16d] = ctx->m.mb_height; // Ns |
| 436 | buf[0x16f] = 0x10; // reserved |
| 437 | |
| 438 | ctx->msip = buf + 0x170; |
| 439 | return 0; |
| 440 | } |
| 441 | |
| 442 | static av_always_inline void dnxhd_encode_dc(DNXHDEncContext *ctx, int diff) |
| 443 | { |
| 444 | int nbits; |
| 445 | if (diff < 0) { |
| 446 | nbits = av_log2_16bit(-2 * diff); |
| 447 | diff--; |
| 448 | } else { |
| 449 | nbits = av_log2_16bit(2 * diff); |
| 450 | } |
| 451 | put_bits(&ctx->m.pb, ctx->cid_table->dc_bits[nbits] + nbits, |
| 452 | (ctx->cid_table->dc_codes[nbits] << nbits) + |
| 453 | (diff & ((1 << nbits) - 1))); |
| 454 | } |
| 455 | |
| 456 | static av_always_inline |
| 457 | void dnxhd_encode_block(DNXHDEncContext *ctx, int16_t *block, |
| 458 | int last_index, int n) |
| 459 | { |
| 460 | int last_non_zero = 0; |
| 461 | int slevel, i, j; |
| 462 | |
| 463 | dnxhd_encode_dc(ctx, block[0] - ctx->m.last_dc[n]); |
| 464 | ctx->m.last_dc[n] = block[0]; |
| 465 | |
| 466 | for (i = 1; i <= last_index; i++) { |
| 467 | j = ctx->m.intra_scantable.permutated[i]; |
| 468 | slevel = block[j]; |
| 469 | if (slevel) { |
| 470 | int run_level = i - last_non_zero - 1; |
| 471 | int rlevel = (slevel << 1) | !!run_level; |
| 472 | put_bits(&ctx->m.pb, ctx->vlc_bits[rlevel], ctx->vlc_codes[rlevel]); |
| 473 | if (run_level) |
| 474 | put_bits(&ctx->m.pb, ctx->run_bits[run_level], |
| 475 | ctx->run_codes[run_level]); |
| 476 | last_non_zero = i; |
| 477 | } |
| 478 | } |
| 479 | put_bits(&ctx->m.pb, ctx->vlc_bits[0], ctx->vlc_codes[0]); // EOB |
| 480 | } |
| 481 | |
| 482 | static av_always_inline |
| 483 | void dnxhd_unquantize_c(DNXHDEncContext *ctx, int16_t *block, int n, |
| 484 | int qscale, int last_index) |
| 485 | { |
| 486 | const uint8_t *weight_matrix; |
| 487 | int level; |
| 488 | int i; |
| 489 | |
| 490 | weight_matrix = (n & 2) ? ctx->cid_table->chroma_weight |
| 491 | : ctx->cid_table->luma_weight; |
| 492 | |
| 493 | for (i = 1; i <= last_index; i++) { |
| 494 | int j = ctx->m.intra_scantable.permutated[i]; |
| 495 | level = block[j]; |
| 496 | if (level) { |
| 497 | if (level < 0) { |
| 498 | level = (1 - 2 * level) * qscale * weight_matrix[i]; |
| 499 | if (ctx->cid_table->bit_depth == 10) { |
| 500 | if (weight_matrix[i] != 8) |
| 501 | level += 8; |
| 502 | level >>= 4; |
| 503 | } else { |
| 504 | if (weight_matrix[i] != 32) |
| 505 | level += 32; |
| 506 | level >>= 6; |
| 507 | } |
| 508 | level = -level; |
| 509 | } else { |
| 510 | level = (2 * level + 1) * qscale * weight_matrix[i]; |
| 511 | if (ctx->cid_table->bit_depth == 10) { |
| 512 | if (weight_matrix[i] != 8) |
| 513 | level += 8; |
| 514 | level >>= 4; |
| 515 | } else { |
| 516 | if (weight_matrix[i] != 32) |
| 517 | level += 32; |
| 518 | level >>= 6; |
| 519 | } |
| 520 | } |
| 521 | block[j] = level; |
| 522 | } |
| 523 | } |
| 524 | } |
| 525 | |
| 526 | static av_always_inline int dnxhd_ssd_block(int16_t *qblock, int16_t *block) |
| 527 | { |
| 528 | int score = 0; |
| 529 | int i; |
| 530 | for (i = 0; i < 64; i++) |
| 531 | score += (block[i] - qblock[i]) * (block[i] - qblock[i]); |
| 532 | return score; |
| 533 | } |
| 534 | |
| 535 | static av_always_inline |
| 536 | int dnxhd_calc_ac_bits(DNXHDEncContext *ctx, int16_t *block, int last_index) |
| 537 | { |
| 538 | int last_non_zero = 0; |
| 539 | int bits = 0; |
| 540 | int i, j, level; |
| 541 | for (i = 1; i <= last_index; i++) { |
| 542 | j = ctx->m.intra_scantable.permutated[i]; |
| 543 | level = block[j]; |
| 544 | if (level) { |
| 545 | int run_level = i - last_non_zero - 1; |
| 546 | bits += ctx->vlc_bits[(level << 1) | |
| 547 | !!run_level] + ctx->run_bits[run_level]; |
| 548 | last_non_zero = i; |
| 549 | } |
| 550 | } |
| 551 | return bits; |
| 552 | } |
| 553 | |
| 554 | static av_always_inline |
| 555 | void dnxhd_get_blocks(DNXHDEncContext *ctx, int mb_x, int mb_y) |
| 556 | { |
| 557 | const int bs = ctx->block_width_l2; |
| 558 | const int bw = 1 << bs; |
| 559 | const uint8_t *ptr_y = ctx->thread[0]->src[0] + |
| 560 | ((mb_y << 4) * ctx->m.linesize) + (mb_x << bs + 1); |
| 561 | const uint8_t *ptr_u = ctx->thread[0]->src[1] + |
| 562 | ((mb_y << 4) * ctx->m.uvlinesize) + (mb_x << bs); |
| 563 | const uint8_t *ptr_v = ctx->thread[0]->src[2] + |
| 564 | ((mb_y << 4) * ctx->m.uvlinesize) + (mb_x << bs); |
| 565 | PixblockDSPContext *pdsp = &ctx->m.pdsp; |
| 566 | |
| 567 | pdsp->get_pixels(ctx->blocks[0], ptr_y, ctx->m.linesize); |
| 568 | pdsp->get_pixels(ctx->blocks[1], ptr_y + bw, ctx->m.linesize); |
| 569 | pdsp->get_pixels(ctx->blocks[2], ptr_u, ctx->m.uvlinesize); |
| 570 | pdsp->get_pixels(ctx->blocks[3], ptr_v, ctx->m.uvlinesize); |
| 571 | |
| 572 | if (mb_y + 1 == ctx->m.mb_height && ctx->m.avctx->height == 1080) { |
| 573 | if (ctx->interlaced) { |
| 574 | ctx->get_pixels_8x4_sym(ctx->blocks[4], |
| 575 | ptr_y + ctx->dct_y_offset, |
| 576 | ctx->m.linesize); |
| 577 | ctx->get_pixels_8x4_sym(ctx->blocks[5], |
| 578 | ptr_y + ctx->dct_y_offset + bw, |
| 579 | ctx->m.linesize); |
| 580 | ctx->get_pixels_8x4_sym(ctx->blocks[6], |
| 581 | ptr_u + ctx->dct_uv_offset, |
| 582 | ctx->m.uvlinesize); |
| 583 | ctx->get_pixels_8x4_sym(ctx->blocks[7], |
| 584 | ptr_v + ctx->dct_uv_offset, |
| 585 | ctx->m.uvlinesize); |
| 586 | } else { |
| 587 | ctx->bdsp.clear_block(ctx->blocks[4]); |
| 588 | ctx->bdsp.clear_block(ctx->blocks[5]); |
| 589 | ctx->bdsp.clear_block(ctx->blocks[6]); |
| 590 | ctx->bdsp.clear_block(ctx->blocks[7]); |
| 591 | } |
| 592 | } else { |
| 593 | pdsp->get_pixels(ctx->blocks[4], |
| 594 | ptr_y + ctx->dct_y_offset, ctx->m.linesize); |
| 595 | pdsp->get_pixels(ctx->blocks[5], |
| 596 | ptr_y + ctx->dct_y_offset + bw, ctx->m.linesize); |
| 597 | pdsp->get_pixels(ctx->blocks[6], |
| 598 | ptr_u + ctx->dct_uv_offset, ctx->m.uvlinesize); |
| 599 | pdsp->get_pixels(ctx->blocks[7], |
| 600 | ptr_v + ctx->dct_uv_offset, ctx->m.uvlinesize); |
| 601 | } |
| 602 | } |
| 603 | |
| 604 | static av_always_inline |
| 605 | int dnxhd_switch_matrix(DNXHDEncContext *ctx, int i) |
| 606 | { |
| 607 | const static uint8_t component[8]={0,0,1,2,0,0,1,2}; |
| 608 | return component[i]; |
| 609 | } |
| 610 | |
| 611 | static int dnxhd_calc_bits_thread(AVCodecContext *avctx, void *arg, |
| 612 | int jobnr, int threadnr) |
| 613 | { |
| 614 | DNXHDEncContext *ctx = avctx->priv_data; |
| 615 | int mb_y = jobnr, mb_x; |
| 616 | int qscale = ctx->qscale; |
| 617 | LOCAL_ALIGNED_16(int16_t, block, [64]); |
| 618 | ctx = ctx->thread[threadnr]; |
| 619 | |
| 620 | ctx->m.last_dc[0] = |
| 621 | ctx->m.last_dc[1] = |
| 622 | ctx->m.last_dc[2] = 1 << (ctx->cid_table->bit_depth + 2); |
| 623 | |
| 624 | for (mb_x = 0; mb_x < ctx->m.mb_width; mb_x++) { |
| 625 | unsigned mb = mb_y * ctx->m.mb_width + mb_x; |
| 626 | int ssd = 0; |
| 627 | int ac_bits = 0; |
| 628 | int dc_bits = 0; |
| 629 | int i; |
| 630 | |
| 631 | dnxhd_get_blocks(ctx, mb_x, mb_y); |
| 632 | |
| 633 | for (i = 0; i < 8; i++) { |
| 634 | int16_t *src_block = ctx->blocks[i]; |
| 635 | int overflow, nbits, diff, last_index; |
| 636 | int n = dnxhd_switch_matrix(ctx, i); |
| 637 | |
| 638 | memcpy(block, src_block, 64 * sizeof(*block)); |
| 639 | last_index = ctx->m.dct_quantize(&ctx->m, block, 4 & (2*i), |
| 640 | qscale, &overflow); |
| 641 | ac_bits += dnxhd_calc_ac_bits(ctx, block, last_index); |
| 642 | |
| 643 | diff = block[0] - ctx->m.last_dc[n]; |
| 644 | if (diff < 0) |
| 645 | nbits = av_log2_16bit(-2 * diff); |
| 646 | else |
| 647 | nbits = av_log2_16bit(2 * diff); |
| 648 | |
| 649 | av_assert1(nbits < ctx->cid_table->bit_depth + 4); |
| 650 | dc_bits += ctx->cid_table->dc_bits[nbits] + nbits; |
| 651 | |
| 652 | ctx->m.last_dc[n] = block[0]; |
| 653 | |
| 654 | if (avctx->mb_decision == FF_MB_DECISION_RD || !RC_VARIANCE) { |
| 655 | dnxhd_unquantize_c(ctx, block, i, qscale, last_index); |
| 656 | ctx->m.idsp.idct(block); |
| 657 | ssd += dnxhd_ssd_block(block, src_block); |
| 658 | } |
| 659 | } |
| 660 | ctx->mb_rc[qscale][mb].ssd = ssd; |
| 661 | ctx->mb_rc[qscale][mb].bits = ac_bits + dc_bits + 12 + |
| 662 | 8 * ctx->vlc_bits[0]; |
| 663 | } |
| 664 | return 0; |
| 665 | } |
| 666 | |
| 667 | static int dnxhd_encode_thread(AVCodecContext *avctx, void *arg, |
| 668 | int jobnr, int threadnr) |
| 669 | { |
| 670 | DNXHDEncContext *ctx = avctx->priv_data; |
| 671 | int mb_y = jobnr, mb_x; |
| 672 | ctx = ctx->thread[threadnr]; |
| 673 | init_put_bits(&ctx->m.pb, (uint8_t *)arg + 640 + ctx->slice_offs[jobnr], |
| 674 | ctx->slice_size[jobnr]); |
| 675 | |
| 676 | ctx->m.last_dc[0] = |
| 677 | ctx->m.last_dc[1] = |
| 678 | ctx->m.last_dc[2] = 1 << (ctx->cid_table->bit_depth + 2); |
| 679 | for (mb_x = 0; mb_x < ctx->m.mb_width; mb_x++) { |
| 680 | unsigned mb = mb_y * ctx->m.mb_width + mb_x; |
| 681 | int qscale = ctx->mb_qscale[mb]; |
| 682 | int i; |
| 683 | |
| 684 | put_bits(&ctx->m.pb, 12, qscale << 1); |
| 685 | |
| 686 | dnxhd_get_blocks(ctx, mb_x, mb_y); |
| 687 | |
| 688 | for (i = 0; i < 8; i++) { |
| 689 | int16_t *block = ctx->blocks[i]; |
| 690 | int overflow, n = dnxhd_switch_matrix(ctx, i); |
| 691 | int last_index = ctx->m.dct_quantize(&ctx->m, block, 4 & (2*i), |
| 692 | qscale, &overflow); |
| 693 | // START_TIMER; |
| 694 | dnxhd_encode_block(ctx, block, last_index, n); |
| 695 | // STOP_TIMER("encode_block"); |
| 696 | } |
| 697 | } |
| 698 | if (put_bits_count(&ctx->m.pb) & 31) |
| 699 | put_bits(&ctx->m.pb, 32 - (put_bits_count(&ctx->m.pb) & 31), 0); |
| 700 | flush_put_bits(&ctx->m.pb); |
| 701 | return 0; |
| 702 | } |
| 703 | |
| 704 | static void dnxhd_setup_threads_slices(DNXHDEncContext *ctx) |
| 705 | { |
| 706 | int mb_y, mb_x; |
| 707 | int offset = 0; |
| 708 | for (mb_y = 0; mb_y < ctx->m.mb_height; mb_y++) { |
| 709 | int thread_size; |
| 710 | ctx->slice_offs[mb_y] = offset; |
| 711 | ctx->slice_size[mb_y] = 0; |
| 712 | for (mb_x = 0; mb_x < ctx->m.mb_width; mb_x++) { |
| 713 | unsigned mb = mb_y * ctx->m.mb_width + mb_x; |
| 714 | ctx->slice_size[mb_y] += ctx->mb_bits[mb]; |
| 715 | } |
| 716 | ctx->slice_size[mb_y] = (ctx->slice_size[mb_y] + 31) & ~31; |
| 717 | ctx->slice_size[mb_y] >>= 3; |
| 718 | thread_size = ctx->slice_size[mb_y]; |
| 719 | offset += thread_size; |
| 720 | } |
| 721 | } |
| 722 | |
| 723 | static int dnxhd_mb_var_thread(AVCodecContext *avctx, void *arg, |
| 724 | int jobnr, int threadnr) |
| 725 | { |
| 726 | DNXHDEncContext *ctx = avctx->priv_data; |
| 727 | int mb_y = jobnr, mb_x, x, y; |
| 728 | int partial_last_row = (mb_y == ctx->m.mb_height - 1) && |
| 729 | ((avctx->height >> ctx->interlaced) & 0xF); |
| 730 | |
| 731 | ctx = ctx->thread[threadnr]; |
| 732 | if (ctx->cid_table->bit_depth == 8) { |
| 733 | uint8_t *pix = ctx->thread[0]->src[0] + ((mb_y << 4) * ctx->m.linesize); |
| 734 | for (mb_x = 0; mb_x < ctx->m.mb_width; ++mb_x, pix += 16) { |
| 735 | unsigned mb = mb_y * ctx->m.mb_width + mb_x; |
| 736 | int sum; |
| 737 | int varc; |
| 738 | |
| 739 | if (!partial_last_row && mb_x * 16 <= avctx->width - 16) { |
| 740 | sum = ctx->m.mpvencdsp.pix_sum(pix, ctx->m.linesize); |
| 741 | varc = ctx->m.mpvencdsp.pix_norm1(pix, ctx->m.linesize); |
| 742 | } else { |
| 743 | int bw = FFMIN(avctx->width - 16 * mb_x, 16); |
| 744 | int bh = FFMIN((avctx->height >> ctx->interlaced) - 16 * mb_y, 16); |
| 745 | sum = varc = 0; |
| 746 | for (y = 0; y < bh; y++) { |
| 747 | for (x = 0; x < bw; x++) { |
| 748 | uint8_t val = pix[x + y * ctx->m.linesize]; |
| 749 | sum += val; |
| 750 | varc += val * val; |
| 751 | } |
| 752 | } |
| 753 | } |
| 754 | varc = (varc - (((unsigned) sum * sum) >> 8) + 128) >> 8; |
| 755 | |
| 756 | ctx->mb_cmp[mb].value = varc; |
| 757 | ctx->mb_cmp[mb].mb = mb; |
| 758 | } |
| 759 | } else { // 10-bit |
| 760 | int const linesize = ctx->m.linesize >> 1; |
| 761 | for (mb_x = 0; mb_x < ctx->m.mb_width; ++mb_x) { |
| 762 | uint16_t *pix = (uint16_t *)ctx->thread[0]->src[0] + |
| 763 | ((mb_y << 4) * linesize) + (mb_x << 4); |
| 764 | unsigned mb = mb_y * ctx->m.mb_width + mb_x; |
| 765 | int sum = 0; |
| 766 | int sqsum = 0; |
| 767 | int mean, sqmean; |
| 768 | int i, j; |
| 769 | // Macroblocks are 16x16 pixels, unlike DCT blocks which are 8x8. |
| 770 | for (i = 0; i < 16; ++i) { |
| 771 | for (j = 0; j < 16; ++j) { |
| 772 | // Turn 16-bit pixels into 10-bit ones. |
| 773 | int const sample = (unsigned) pix[j] >> 6; |
| 774 | sum += sample; |
| 775 | sqsum += sample * sample; |
| 776 | // 2^10 * 2^10 * 16 * 16 = 2^28, which is less than INT_MAX |
| 777 | } |
| 778 | pix += linesize; |
| 779 | } |
| 780 | mean = sum >> 8; // 16*16 == 2^8 |
| 781 | sqmean = sqsum >> 8; |
| 782 | ctx->mb_cmp[mb].value = sqmean - mean * mean; |
| 783 | ctx->mb_cmp[mb].mb = mb; |
| 784 | } |
| 785 | } |
| 786 | return 0; |
| 787 | } |
| 788 | |
| 789 | static int dnxhd_encode_rdo(AVCodecContext *avctx, DNXHDEncContext *ctx) |
| 790 | { |
| 791 | int lambda, up_step, down_step; |
| 792 | int last_lower = INT_MAX, last_higher = 0; |
| 793 | int x, y, q; |
| 794 | |
| 795 | for (q = 1; q < avctx->qmax; q++) { |
| 796 | ctx->qscale = q; |
| 797 | avctx->execute2(avctx, dnxhd_calc_bits_thread, |
| 798 | NULL, NULL, ctx->m.mb_height); |
| 799 | } |
| 800 | up_step = down_step = 2 << LAMBDA_FRAC_BITS; |
| 801 | lambda = ctx->lambda; |
| 802 | |
| 803 | for (;;) { |
| 804 | int bits = 0; |
| 805 | int end = 0; |
| 806 | if (lambda == last_higher) { |
| 807 | lambda++; |
| 808 | end = 1; // need to set final qscales/bits |
| 809 | } |
| 810 | for (y = 0; y < ctx->m.mb_height; y++) { |
| 811 | for (x = 0; x < ctx->m.mb_width; x++) { |
| 812 | unsigned min = UINT_MAX; |
| 813 | int qscale = 1; |
| 814 | int mb = y * ctx->m.mb_width + x; |
| 815 | for (q = 1; q < avctx->qmax; q++) { |
| 816 | unsigned score = ctx->mb_rc[q][mb].bits * lambda + |
| 817 | ((unsigned) ctx->mb_rc[q][mb].ssd << LAMBDA_FRAC_BITS); |
| 818 | if (score < min) { |
| 819 | min = score; |
| 820 | qscale = q; |
| 821 | } |
| 822 | } |
| 823 | bits += ctx->mb_rc[qscale][mb].bits; |
| 824 | ctx->mb_qscale[mb] = qscale; |
| 825 | ctx->mb_bits[mb] = ctx->mb_rc[qscale][mb].bits; |
| 826 | } |
| 827 | bits = (bits + 31) & ~31; // padding |
| 828 | if (bits > ctx->frame_bits) |
| 829 | break; |
| 830 | } |
| 831 | // av_dlog(ctx->m.avctx, |
| 832 | // "lambda %d, up %u, down %u, bits %d, frame %d\n", |
| 833 | // lambda, last_higher, last_lower, bits, ctx->frame_bits); |
| 834 | if (end) { |
| 835 | if (bits > ctx->frame_bits) |
| 836 | return AVERROR(EINVAL); |
| 837 | break; |
| 838 | } |
| 839 | if (bits < ctx->frame_bits) { |
| 840 | last_lower = FFMIN(lambda, last_lower); |
| 841 | if (last_higher != 0) |
| 842 | lambda = (lambda+last_higher)>>1; |
| 843 | else |
| 844 | lambda -= down_step; |
| 845 | down_step = FFMIN((int64_t)down_step*5, INT_MAX); |
| 846 | up_step = 1<<LAMBDA_FRAC_BITS; |
| 847 | lambda = FFMAX(1, lambda); |
| 848 | if (lambda == last_lower) |
| 849 | break; |
| 850 | } else { |
| 851 | last_higher = FFMAX(lambda, last_higher); |
| 852 | if (last_lower != INT_MAX) |
| 853 | lambda = (lambda+last_lower)>>1; |
| 854 | else if ((int64_t)lambda + up_step > INT_MAX) |
| 855 | return AVERROR(EINVAL); |
| 856 | else |
| 857 | lambda += up_step; |
| 858 | up_step = FFMIN((int64_t)up_step*5, INT_MAX); |
| 859 | down_step = 1<<LAMBDA_FRAC_BITS; |
| 860 | } |
| 861 | } |
| 862 | //av_dlog(ctx->m.avctx, "out lambda %d\n", lambda); |
| 863 | ctx->lambda = lambda; |
| 864 | return 0; |
| 865 | } |
| 866 | |
| 867 | static int dnxhd_find_qscale(DNXHDEncContext *ctx) |
| 868 | { |
| 869 | int bits = 0; |
| 870 | int up_step = 1; |
| 871 | int down_step = 1; |
| 872 | int last_higher = 0; |
| 873 | int last_lower = INT_MAX; |
| 874 | int qscale; |
| 875 | int x, y; |
| 876 | |
| 877 | qscale = ctx->qscale; |
| 878 | for (;;) { |
| 879 | bits = 0; |
| 880 | ctx->qscale = qscale; |
| 881 | // XXX avoid recalculating bits |
| 882 | ctx->m.avctx->execute2(ctx->m.avctx, dnxhd_calc_bits_thread, |
| 883 | NULL, NULL, ctx->m.mb_height); |
| 884 | for (y = 0; y < ctx->m.mb_height; y++) { |
| 885 | for (x = 0; x < ctx->m.mb_width; x++) |
| 886 | bits += ctx->mb_rc[qscale][y*ctx->m.mb_width+x].bits; |
| 887 | bits = (bits+31)&~31; // padding |
| 888 | if (bits > ctx->frame_bits) |
| 889 | break; |
| 890 | } |
| 891 | // av_dlog(ctx->m.avctx, |
| 892 | // "%d, qscale %d, bits %d, frame %d, higher %d, lower %d\n", |
| 893 | // ctx->m.avctx->frame_number, qscale, bits, ctx->frame_bits, |
| 894 | // last_higher, last_lower); |
| 895 | if (bits < ctx->frame_bits) { |
| 896 | if (qscale == 1) |
| 897 | return 1; |
| 898 | if (last_higher == qscale - 1) { |
| 899 | qscale = last_higher; |
| 900 | break; |
| 901 | } |
| 902 | last_lower = FFMIN(qscale, last_lower); |
| 903 | if (last_higher != 0) |
| 904 | qscale = (qscale + last_higher) >> 1; |
| 905 | else |
| 906 | qscale -= down_step++; |
| 907 | if (qscale < 1) |
| 908 | qscale = 1; |
| 909 | up_step = 1; |
| 910 | } else { |
| 911 | if (last_lower == qscale + 1) |
| 912 | break; |
| 913 | last_higher = FFMAX(qscale, last_higher); |
| 914 | if (last_lower != INT_MAX) |
| 915 | qscale = (qscale + last_lower) >> 1; |
| 916 | else |
| 917 | qscale += up_step++; |
| 918 | down_step = 1; |
| 919 | if (qscale >= ctx->m.avctx->qmax) |
| 920 | return AVERROR(EINVAL); |
| 921 | } |
| 922 | } |
| 923 | //av_dlog(ctx->m.avctx, "out qscale %d\n", qscale); |
| 924 | ctx->qscale = qscale; |
| 925 | return 0; |
| 926 | } |
| 927 | |
| 928 | #define BUCKET_BITS 8 |
| 929 | #define RADIX_PASSES 4 |
| 930 | #define NBUCKETS (1 << BUCKET_BITS) |
| 931 | |
| 932 | static inline int get_bucket(int value, int shift) |
| 933 | { |
| 934 | value >>= shift; |
| 935 | value &= NBUCKETS - 1; |
| 936 | return NBUCKETS - 1 - value; |
| 937 | } |
| 938 | |
| 939 | static void radix_count(const RCCMPEntry *data, int size, |
| 940 | int buckets[RADIX_PASSES][NBUCKETS]) |
| 941 | { |
| 942 | int i, j; |
| 943 | memset(buckets, 0, sizeof(buckets[0][0]) * RADIX_PASSES * NBUCKETS); |
| 944 | for (i = 0; i < size; i++) { |
| 945 | int v = data[i].value; |
| 946 | for (j = 0; j < RADIX_PASSES; j++) { |
| 947 | buckets[j][get_bucket(v, 0)]++; |
| 948 | v >>= BUCKET_BITS; |
| 949 | } |
| 950 | av_assert1(!v); |
| 951 | } |
| 952 | for (j = 0; j < RADIX_PASSES; j++) { |
| 953 | int offset = size; |
| 954 | for (i = NBUCKETS - 1; i >= 0; i--) |
| 955 | buckets[j][i] = offset -= buckets[j][i]; |
| 956 | av_assert1(!buckets[j][0]); |
| 957 | } |
| 958 | } |
| 959 | |
| 960 | static void radix_sort_pass(RCCMPEntry *dst, const RCCMPEntry *data, |
| 961 | int size, int buckets[NBUCKETS], int pass) |
| 962 | { |
| 963 | int shift = pass * BUCKET_BITS; |
| 964 | int i; |
| 965 | for (i = 0; i < size; i++) { |
| 966 | int v = get_bucket(data[i].value, shift); |
| 967 | int pos = buckets[v]++; |
| 968 | dst[pos] = data[i]; |
| 969 | } |
| 970 | } |
| 971 | |
| 972 | static void radix_sort(RCCMPEntry *data, int size) |
| 973 | { |
| 974 | int buckets[RADIX_PASSES][NBUCKETS]; |
| 975 | RCCMPEntry *tmp = av_malloc_array(size, sizeof(*tmp)); |
| 976 | radix_count(data, size, buckets); |
| 977 | radix_sort_pass(tmp, data, size, buckets[0], 0); |
| 978 | radix_sort_pass(data, tmp, size, buckets[1], 1); |
| 979 | if (buckets[2][NBUCKETS - 1] || buckets[3][NBUCKETS - 1]) { |
| 980 | radix_sort_pass(tmp, data, size, buckets[2], 2); |
| 981 | radix_sort_pass(data, tmp, size, buckets[3], 3); |
| 982 | } |
| 983 | av_free(tmp); |
| 984 | } |
| 985 | |
| 986 | static int dnxhd_encode_fast(AVCodecContext *avctx, DNXHDEncContext *ctx) |
| 987 | { |
| 988 | int max_bits = 0; |
| 989 | int ret, x, y; |
| 990 | if ((ret = dnxhd_find_qscale(ctx)) < 0) |
| 991 | return ret; |
| 992 | for (y = 0; y < ctx->m.mb_height; y++) { |
| 993 | for (x = 0; x < ctx->m.mb_width; x++) { |
| 994 | int mb = y * ctx->m.mb_width + x; |
| 995 | int delta_bits; |
| 996 | ctx->mb_qscale[mb] = ctx->qscale; |
| 997 | ctx->mb_bits[mb] = ctx->mb_rc[ctx->qscale][mb].bits; |
| 998 | max_bits += ctx->mb_rc[ctx->qscale][mb].bits; |
| 999 | if (!RC_VARIANCE) { |
| 1000 | delta_bits = ctx->mb_rc[ctx->qscale][mb].bits - |
| 1001 | ctx->mb_rc[ctx->qscale + 1][mb].bits; |
| 1002 | ctx->mb_cmp[mb].mb = mb; |
| 1003 | ctx->mb_cmp[mb].value = |
| 1004 | delta_bits ? ((ctx->mb_rc[ctx->qscale][mb].ssd - |
| 1005 | ctx->mb_rc[ctx->qscale + 1][mb].ssd) * 100) / |
| 1006 | delta_bits |
| 1007 | : INT_MIN; // avoid increasing qscale |
| 1008 | } |
| 1009 | } |
| 1010 | max_bits += 31; // worst padding |
| 1011 | } |
| 1012 | if (!ret) { |
| 1013 | if (RC_VARIANCE) |
| 1014 | avctx->execute2(avctx, dnxhd_mb_var_thread, |
| 1015 | NULL, NULL, ctx->m.mb_height); |
| 1016 | radix_sort(ctx->mb_cmp, ctx->m.mb_num); |
| 1017 | for (x = 0; x < ctx->m.mb_num && max_bits > ctx->frame_bits; x++) { |
| 1018 | int mb = ctx->mb_cmp[x].mb; |
| 1019 | max_bits -= ctx->mb_rc[ctx->qscale][mb].bits - |
| 1020 | ctx->mb_rc[ctx->qscale + 1][mb].bits; |
| 1021 | ctx->mb_qscale[mb] = ctx->qscale + 1; |
| 1022 | ctx->mb_bits[mb] = ctx->mb_rc[ctx->qscale + 1][mb].bits; |
| 1023 | } |
| 1024 | } |
| 1025 | return 0; |
| 1026 | } |
| 1027 | |
| 1028 | static void dnxhd_load_picture(DNXHDEncContext *ctx, const AVFrame *frame) |
| 1029 | { |
| 1030 | int i; |
| 1031 | |
| 1032 | for (i = 0; i < ctx->m.avctx->thread_count; i++) { |
| 1033 | ctx->thread[i]->m.linesize = frame->linesize[0] << ctx->interlaced; |
| 1034 | ctx->thread[i]->m.uvlinesize = frame->linesize[1] << ctx->interlaced; |
| 1035 | ctx->thread[i]->dct_y_offset = ctx->m.linesize *8; |
| 1036 | ctx->thread[i]->dct_uv_offset = ctx->m.uvlinesize*8; |
| 1037 | } |
| 1038 | |
| 1039 | ctx->m.avctx->coded_frame->interlaced_frame = frame->interlaced_frame; |
| 1040 | ctx->cur_field = frame->interlaced_frame && !frame->top_field_first; |
| 1041 | } |
| 1042 | |
| 1043 | static int dnxhd_encode_picture(AVCodecContext *avctx, AVPacket *pkt, |
| 1044 | const AVFrame *frame, int *got_packet) |
| 1045 | { |
| 1046 | DNXHDEncContext *ctx = avctx->priv_data; |
| 1047 | int first_field = 1; |
| 1048 | int offset, i, ret; |
| 1049 | uint8_t *buf; |
| 1050 | |
| 1051 | if ((ret = ff_alloc_packet2(avctx, pkt, ctx->cid_table->frame_size)) < 0) |
| 1052 | return ret; |
| 1053 | buf = pkt->data; |
| 1054 | |
| 1055 | dnxhd_load_picture(ctx, frame); |
| 1056 | |
| 1057 | encode_coding_unit: |
| 1058 | for (i = 0; i < 3; i++) { |
| 1059 | ctx->src[i] = frame->data[i]; |
| 1060 | if (ctx->interlaced && ctx->cur_field) |
| 1061 | ctx->src[i] += frame->linesize[i]; |
| 1062 | } |
| 1063 | |
| 1064 | dnxhd_write_header(avctx, buf); |
| 1065 | |
| 1066 | if (avctx->mb_decision == FF_MB_DECISION_RD) |
| 1067 | ret = dnxhd_encode_rdo(avctx, ctx); |
| 1068 | else |
| 1069 | ret = dnxhd_encode_fast(avctx, ctx); |
| 1070 | if (ret < 0) { |
| 1071 | av_log(avctx, AV_LOG_ERROR, |
| 1072 | "picture could not fit ratecontrol constraints, increase qmax\n"); |
| 1073 | return ret; |
| 1074 | } |
| 1075 | |
| 1076 | dnxhd_setup_threads_slices(ctx); |
| 1077 | |
| 1078 | offset = 0; |
| 1079 | for (i = 0; i < ctx->m.mb_height; i++) { |
| 1080 | AV_WB32(ctx->msip + i * 4, offset); |
| 1081 | offset += ctx->slice_size[i]; |
| 1082 | av_assert1(!(ctx->slice_size[i] & 3)); |
| 1083 | } |
| 1084 | |
| 1085 | avctx->execute2(avctx, dnxhd_encode_thread, buf, NULL, ctx->m.mb_height); |
| 1086 | |
| 1087 | av_assert1(640 + offset + 4 <= ctx->cid_table->coding_unit_size); |
| 1088 | memset(buf + 640 + offset, 0, |
| 1089 | ctx->cid_table->coding_unit_size - 4 - offset - 640); |
| 1090 | |
| 1091 | AV_WB32(buf + ctx->cid_table->coding_unit_size - 4, 0x600DC0DE); // EOF |
| 1092 | |
| 1093 | if (ctx->interlaced && first_field) { |
| 1094 | first_field = 0; |
| 1095 | ctx->cur_field ^= 1; |
| 1096 | buf += ctx->cid_table->coding_unit_size; |
| 1097 | goto encode_coding_unit; |
| 1098 | } |
| 1099 | |
| 1100 | avctx->coded_frame->quality = ctx->qscale * FF_QP2LAMBDA; |
| 1101 | |
| 1102 | pkt->flags |= AV_PKT_FLAG_KEY; |
| 1103 | *got_packet = 1; |
| 1104 | return 0; |
| 1105 | } |
| 1106 | |
| 1107 | static av_cold int dnxhd_encode_end(AVCodecContext *avctx) |
| 1108 | { |
| 1109 | DNXHDEncContext *ctx = avctx->priv_data; |
| 1110 | int max_level = 1 << (ctx->cid_table->bit_depth + 2); |
| 1111 | int i; |
| 1112 | |
| 1113 | av_free(ctx->vlc_codes - max_level * 2); |
| 1114 | av_free(ctx->vlc_bits - max_level * 2); |
| 1115 | av_freep(&ctx->run_codes); |
| 1116 | av_freep(&ctx->run_bits); |
| 1117 | |
| 1118 | av_freep(&ctx->mb_bits); |
| 1119 | av_freep(&ctx->mb_qscale); |
| 1120 | av_freep(&ctx->mb_rc); |
| 1121 | av_freep(&ctx->mb_cmp); |
| 1122 | av_freep(&ctx->slice_size); |
| 1123 | av_freep(&ctx->slice_offs); |
| 1124 | |
| 1125 | av_freep(&ctx->qmatrix_c); |
| 1126 | av_freep(&ctx->qmatrix_l); |
| 1127 | av_freep(&ctx->qmatrix_c16); |
| 1128 | av_freep(&ctx->qmatrix_l16); |
| 1129 | |
| 1130 | for (i = 1; i < avctx->thread_count; i++) |
| 1131 | av_freep(&ctx->thread[i]); |
| 1132 | |
| 1133 | av_frame_free(&avctx->coded_frame); |
| 1134 | |
| 1135 | return 0; |
| 1136 | } |
| 1137 | |
| 1138 | static const AVCodecDefault dnxhd_defaults[] = { |
| 1139 | { "qmax", "1024" }, /* Maximum quantization scale factor allowed for VC-3 */ |
| 1140 | { NULL }, |
| 1141 | }; |
| 1142 | |
| 1143 | AVCodec ff_dnxhd_encoder = { |
| 1144 | .name = "dnxhd", |
| 1145 | .long_name = NULL_IF_CONFIG_SMALL("VC3/DNxHD"), |
| 1146 | .type = AVMEDIA_TYPE_VIDEO, |
| 1147 | .id = AV_CODEC_ID_DNXHD, |
| 1148 | .priv_data_size = sizeof(DNXHDEncContext), |
| 1149 | .init = dnxhd_encode_init, |
| 1150 | .encode2 = dnxhd_encode_picture, |
| 1151 | .close = dnxhd_encode_end, |
| 1152 | .capabilities = CODEC_CAP_SLICE_THREADS, |
| 1153 | .pix_fmts = (const enum AVPixelFormat[]) { |
| 1154 | AV_PIX_FMT_YUV422P, |
| 1155 | AV_PIX_FMT_YUV422P10, |
| 1156 | AV_PIX_FMT_NONE |
| 1157 | }, |
| 1158 | .priv_class = &dnxhd_class, |
| 1159 | .defaults = dnxhd_defaults, |
| 1160 | }; |