/libavcodec/libxavs.c
C | 482 lines | 374 code | 74 blank | 34 comment | 56 complexity | 5f403360f51956aa9c33b34344ae14ac MD5 | raw file
1/* 2 * AVS encoding using the xavs library 3 * Copyright (C) 2010 Amanda, Y.N. Wu <amanda11192003@gmail.com> 4 * 5 * This file is part of FFmpeg. 6 * 7 * FFmpeg is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU Lesser General Public 9 * License as published by the Free Software Foundation; either 10 * version 2.1 of the License, or (at your option) any later version. 11 * 12 * FFmpeg is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * Lesser General Public License for more details. 16 * 17 * You should have received a copy of the GNU Lesser General Public 18 * License along with FFmpeg; if not, write to the Free Software 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 20 */ 21 22#include <stdio.h> 23#include <stdlib.h> 24#include <string.h> 25#include <math.h> 26#include <stdint.h> 27#include <float.h> 28#include <xavs.h> 29#include "avcodec.h" 30#include "internal.h" 31#include "libavutil/internal.h" 32#include "libavutil/mem.h" 33#include "libavutil/opt.h" 34 35#define END_OF_STREAM 0x001 36 37#define XAVS_PART_I8X8 0x002 /* Analyze i8x8 (requires 8x8 transform) */ 38#define XAVS_PART_P8X8 0x010 /* Analyze p16x8, p8x16 and p8x8 */ 39#define XAVS_PART_B8X8 0x100 /* Analyze b16x8, b*/ 40 41typedef struct XavsContext { 42 AVClass *class; 43 xavs_param_t params; 44 xavs_t *enc; 45 xavs_picture_t pic; 46 uint8_t *sei; 47 int sei_size; 48 int end_of_stream; 49 float crf; 50 int cqp; 51 int b_bias; 52 float cplxblur; 53 int direct_pred; 54 int aud; 55 int fast_pskip; 56 int motion_est; 57 int mbtree; 58 int mixed_refs; 59 int b_frame_strategy; 60 int chroma_offset; 61 int scenechange_threshold; 62 int noise_reduction; 63 64 int64_t *pts_buffer; 65 int out_frame_count; 66} XavsContext; 67 68static void XAVS_log(void *p, int level, const char *fmt, va_list args) 69{ 70 static const int level_map[] = { 71 [XAVS_LOG_ERROR] = AV_LOG_ERROR, 72 [XAVS_LOG_WARNING] = AV_LOG_WARNING, 73 [XAVS_LOG_INFO] = AV_LOG_INFO, 74 [XAVS_LOG_DEBUG] = AV_LOG_DEBUG 75 }; 76 77 if (level < 0 || level > XAVS_LOG_DEBUG) 78 return; 79 80 av_vlog(p, level_map[level], fmt, args); 81} 82 83static int encode_nals(AVCodecContext *ctx, AVPacket *pkt, 84 xavs_nal_t *nals, int nnal) 85{ 86 XavsContext *x4 = ctx->priv_data; 87 uint8_t *p; 88 int i, s, ret, size = x4->sei_size + AV_INPUT_BUFFER_MIN_SIZE; 89 90 if (!nnal) 91 return 0; 92 93 for (i = 0; i < nnal; i++) 94 size += nals[i].i_payload; 95 96 if ((ret = ff_alloc_packet2(ctx, pkt, size, 0)) < 0) 97 return ret; 98 p = pkt->data; 99 100 /* Write the SEI as part of the first frame. */ 101 if (x4->sei_size > 0 && nnal > 0) { 102 memcpy(p, x4->sei, x4->sei_size); 103 p += x4->sei_size; 104 x4->sei_size = 0; 105 } 106 107 for (i = 0; i < nnal; i++) { 108 s = xavs_nal_encode(p, &size, 1, nals + i); 109 if (s < 0) 110 return -1; 111 p += s; 112 } 113 pkt->size = p - pkt->data; 114 115 return 1; 116} 117 118static int XAVS_frame(AVCodecContext *avctx, AVPacket *pkt, 119 const AVFrame *frame, int *got_packet) 120{ 121 XavsContext *x4 = avctx->priv_data; 122 xavs_nal_t *nal; 123 int nnal, i, ret; 124 xavs_picture_t pic_out; 125 int pict_type; 126 127 x4->pic.img.i_csp = XAVS_CSP_I420; 128 x4->pic.img.i_plane = 3; 129 130 if (frame) { 131 for (i = 0; i < 3; i++) { 132 x4->pic.img.plane[i] = frame->data[i]; 133 x4->pic.img.i_stride[i] = frame->linesize[i]; 134 } 135 136 x4->pic.i_pts = frame->pts; 137 x4->pic.i_type = XAVS_TYPE_AUTO; 138 x4->pts_buffer[avctx->frame_number % (avctx->max_b_frames+1)] = frame->pts; 139 } 140 141 if (xavs_encoder_encode(x4->enc, &nal, &nnal, 142 frame? &x4->pic: NULL, &pic_out) < 0) 143 return -1; 144 145 ret = encode_nals(avctx, pkt, nal, nnal); 146 147 if (ret < 0) 148 return -1; 149 150 if (!ret) { 151 if (!frame && !(x4->end_of_stream)) { 152 if ((ret = ff_alloc_packet2(avctx, pkt, 4, 0)) < 0) 153 return ret; 154 155 pkt->data[0] = 0x0; 156 pkt->data[1] = 0x0; 157 pkt->data[2] = 0x01; 158 pkt->data[3] = 0xb1; 159 pkt->dts = 2*x4->pts_buffer[(x4->out_frame_count-1)%(avctx->max_b_frames+1)] - 160 x4->pts_buffer[(x4->out_frame_count-2)%(avctx->max_b_frames+1)]; 161 x4->end_of_stream = END_OF_STREAM; 162 *got_packet = 1; 163 } 164 return 0; 165 } 166 167#if FF_API_CODED_FRAME 168FF_DISABLE_DEPRECATION_WARNINGS 169 avctx->coded_frame->pts = pic_out.i_pts; 170FF_ENABLE_DEPRECATION_WARNINGS 171#endif 172 pkt->pts = pic_out.i_pts; 173 if (avctx->has_b_frames) { 174 if (!x4->out_frame_count) 175 pkt->dts = pkt->pts - (x4->pts_buffer[1] - x4->pts_buffer[0]); 176 else 177 pkt->dts = x4->pts_buffer[(x4->out_frame_count-1)%(avctx->max_b_frames+1)]; 178 } else 179 pkt->dts = pkt->pts; 180 181 switch (pic_out.i_type) { 182 case XAVS_TYPE_IDR: 183 case XAVS_TYPE_I: 184 pict_type = AV_PICTURE_TYPE_I; 185 break; 186 case XAVS_TYPE_P: 187 pict_type = AV_PICTURE_TYPE_P; 188 break; 189 case XAVS_TYPE_B: 190 case XAVS_TYPE_BREF: 191 pict_type = AV_PICTURE_TYPE_B; 192 break; 193 default: 194 pict_type = AV_PICTURE_TYPE_NONE; 195 } 196#if FF_API_CODED_FRAME 197FF_DISABLE_DEPRECATION_WARNINGS 198 avctx->coded_frame->pict_type = pict_type; 199FF_ENABLE_DEPRECATION_WARNINGS 200#endif 201 202 /* There is no IDR frame in AVS JiZhun */ 203 /* Sequence header is used as a flag */ 204 if (pic_out.i_type == XAVS_TYPE_I) { 205#if FF_API_CODED_FRAME 206FF_DISABLE_DEPRECATION_WARNINGS 207 avctx->coded_frame->key_frame = 1; 208FF_ENABLE_DEPRECATION_WARNINGS 209#endif 210 pkt->flags |= AV_PKT_FLAG_KEY; 211 } 212 213#if FF_API_CODED_FRAME 214FF_DISABLE_DEPRECATION_WARNINGS 215 avctx->coded_frame->quality = (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA; 216FF_ENABLE_DEPRECATION_WARNINGS 217#endif 218 219 ff_side_data_set_encoder_stats(pkt, (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA, NULL, 0, pict_type); 220 221 x4->out_frame_count++; 222 *got_packet = ret; 223 return 0; 224} 225 226static av_cold int XAVS_close(AVCodecContext *avctx) 227{ 228 XavsContext *x4 = avctx->priv_data; 229 230 av_freep(&avctx->extradata); 231 av_freep(&x4->sei); 232 av_freep(&x4->pts_buffer); 233 234 if (x4->enc) 235 xavs_encoder_close(x4->enc); 236 237 return 0; 238} 239 240static av_cold int XAVS_init(AVCodecContext *avctx) 241{ 242 XavsContext *x4 = avctx->priv_data; 243 244 x4->sei_size = 0; 245 xavs_param_default(&x4->params); 246 247 x4->params.pf_log = XAVS_log; 248 x4->params.p_log_private = avctx; 249 x4->params.i_keyint_max = avctx->gop_size; 250 if (avctx->bit_rate) { 251 x4->params.rc.i_bitrate = avctx->bit_rate / 1000; 252 x4->params.rc.i_rc_method = XAVS_RC_ABR; 253 } 254 x4->params.rc.i_vbv_buffer_size = avctx->rc_buffer_size / 1000; 255 x4->params.rc.i_vbv_max_bitrate = avctx->rc_max_rate / 1000; 256 x4->params.rc.b_stat_write = avctx->flags & AV_CODEC_FLAG_PASS1; 257 if (avctx->flags & AV_CODEC_FLAG_PASS2) { 258 x4->params.rc.b_stat_read = 1; 259 } else { 260 if (x4->crf >= 0) { 261 x4->params.rc.i_rc_method = XAVS_RC_CRF; 262 x4->params.rc.f_rf_constant = x4->crf; 263 } else if (x4->cqp >= 0) { 264 x4->params.rc.i_rc_method = XAVS_RC_CQP; 265 x4->params.rc.i_qp_constant = x4->cqp; 266 } 267 } 268 269 if (x4->aud >= 0) 270 x4->params.b_aud = x4->aud; 271 if (x4->mbtree >= 0) 272 x4->params.rc.b_mb_tree = x4->mbtree; 273 if (x4->direct_pred >= 0) 274 x4->params.analyse.i_direct_mv_pred = x4->direct_pred; 275 if (x4->fast_pskip >= 0) 276 x4->params.analyse.b_fast_pskip = x4->fast_pskip; 277 if (x4->motion_est >= 0) 278 x4->params.analyse.i_me_method = x4->motion_est; 279 if (x4->mixed_refs >= 0) 280 x4->params.analyse.b_mixed_references = x4->mixed_refs; 281 if (x4->b_bias != INT_MIN) 282 x4->params.i_bframe_bias = x4->b_bias; 283 if (x4->cplxblur >= 0) 284 x4->params.rc.f_complexity_blur = x4->cplxblur; 285 286 x4->params.i_bframe = avctx->max_b_frames; 287 /* cabac is not included in AVS JiZhun Profile */ 288 x4->params.b_cabac = 0; 289 290#if FF_API_PRIVATE_OPT 291FF_DISABLE_DEPRECATION_WARNINGS 292 if (avctx->b_frame_strategy) 293 x4->b_frame_strategy = avctx->b_frame_strategy; 294FF_ENABLE_DEPRECATION_WARNINGS 295#endif 296 297 x4->params.i_bframe_adaptive = x4->b_frame_strategy; 298 299 avctx->has_b_frames = !!avctx->max_b_frames; 300 301 /* AVS doesn't allow B picture as reference */ 302 /* The max allowed reference frame number of B is 2 */ 303 x4->params.i_keyint_min = avctx->keyint_min; 304 if (x4->params.i_keyint_min > x4->params.i_keyint_max) 305 x4->params.i_keyint_min = x4->params.i_keyint_max; 306 307#if FF_API_PRIVATE_OPT 308FF_DISABLE_DEPRECATION_WARNINGS 309 if (avctx->scenechange_threshold) 310 x4->scenechange_threshold = avctx->scenechange_threshold; 311FF_ENABLE_DEPRECATION_WARNINGS 312#endif 313 314 x4->params.i_scenecut_threshold = x4->scenechange_threshold; 315 316 // x4->params.b_deblocking_filter = avctx->flags & AV_CODEC_FLAG_LOOP_FILTER; 317 318 x4->params.rc.i_qp_min = avctx->qmin; 319 x4->params.rc.i_qp_max = avctx->qmax; 320 x4->params.rc.i_qp_step = avctx->max_qdiff; 321 322 x4->params.rc.f_qcompress = avctx->qcompress; /* 0.0 => cbr, 1.0 => constant qp */ 323 x4->params.rc.f_qblur = avctx->qblur; /* temporally blur quants */ 324 325 x4->params.i_frame_reference = avctx->refs; 326 327 x4->params.i_width = avctx->width; 328 x4->params.i_height = avctx->height; 329 x4->params.vui.i_sar_width = avctx->sample_aspect_ratio.num; 330 x4->params.vui.i_sar_height = avctx->sample_aspect_ratio.den; 331 /* This is only used for counting the fps */ 332 x4->params.i_fps_num = avctx->time_base.den; 333 x4->params.i_fps_den = avctx->time_base.num; 334 x4->params.analyse.inter = XAVS_ANALYSE_I8x8 |XAVS_ANALYSE_PSUB16x16| XAVS_ANALYSE_BSUB16x16; 335 336 x4->params.analyse.i_me_range = avctx->me_range; 337 x4->params.analyse.i_subpel_refine = avctx->me_subpel_quality; 338 339 x4->params.analyse.b_chroma_me = avctx->me_cmp & FF_CMP_CHROMA; 340 /* AVS P2 only enables 8x8 transform */ 341 x4->params.analyse.b_transform_8x8 = 1; //avctx->flags2 & AV_CODEC_FLAG2_8X8DCT; 342 343 x4->params.analyse.i_trellis = avctx->trellis; 344 345#if FF_API_PRIVATE_OPT 346 FF_DISABLE_DEPRECATION_WARNINGS 347 if (avctx->noise_reduction >= 0) 348 x4->noise_reduction = avctx->noise_reduction; 349 FF_ENABLE_DEPRECATION_WARNINGS 350#endif 351 352 x4->params.analyse.i_noise_reduction = x4->noise_reduction; 353 354 if (avctx->level > 0) 355 x4->params.i_level_idc = avctx->level; 356 357 if (avctx->bit_rate > 0) 358 x4->params.rc.f_rate_tolerance = 359 (float)avctx->bit_rate_tolerance / avctx->bit_rate; 360 361 if ((avctx->rc_buffer_size) && 362 (avctx->rc_initial_buffer_occupancy <= avctx->rc_buffer_size)) { 363 x4->params.rc.f_vbv_buffer_init = 364 (float)avctx->rc_initial_buffer_occupancy / avctx->rc_buffer_size; 365 } else 366 x4->params.rc.f_vbv_buffer_init = 0.9; 367 368 /* TAG:do we have MB tree RC method */ 369 /* what is the RC method we are now using? Default NO */ 370 x4->params.rc.f_ip_factor = 1 / fabs(avctx->i_quant_factor); 371 x4->params.rc.f_pb_factor = avctx->b_quant_factor; 372 373#if FF_API_PRIVATE_OPT 374FF_DISABLE_DEPRECATION_WARNINGS 375 if (avctx->chromaoffset) 376 x4->chroma_offset = avctx->chromaoffset; 377FF_ENABLE_DEPRECATION_WARNINGS 378#endif 379 380 x4->params.analyse.i_chroma_qp_offset = x4->chroma_offset; 381 382 x4->params.analyse.b_psnr = avctx->flags & AV_CODEC_FLAG_PSNR; 383 x4->params.i_log_level = XAVS_LOG_DEBUG; 384 x4->params.i_threads = avctx->thread_count; 385 x4->params.b_interlaced = avctx->flags & AV_CODEC_FLAG_INTERLACED_DCT; 386 387 if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER) 388 x4->params.b_repeat_headers = 0; 389 390 x4->enc = xavs_encoder_open(&x4->params); 391 if (!x4->enc) 392 return -1; 393 394 if (!(x4->pts_buffer = av_mallocz_array((avctx->max_b_frames+1), sizeof(*x4->pts_buffer)))) 395 return AVERROR(ENOMEM); 396 397 /* TAG: Do we have GLOBAL HEADER in AVS */ 398 /* We Have PPS and SPS in AVS */ 399 if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER && 0) { 400 xavs_nal_t *nal; 401 int nnal, s, i, size; 402 uint8_t *p; 403 404 s = xavs_encoder_headers(x4->enc, &nal, &nnal); 405 406 avctx->extradata = p = av_malloc(s); 407 for (i = 0; i < nnal; i++) { 408 /* Don't put the SEI in extradata. */ 409 if (nal[i].i_type == NAL_SEI) { 410 x4->sei = av_malloc( 5 + nal[i].i_payload * 4 / 3 ); 411 if (xavs_nal_encode(x4->sei, &x4->sei_size, 1, nal + i) < 0) 412 return -1; 413 414 continue; 415 } 416 size = xavs_nal_encode(p, &s, 1, nal + i); 417 if (size < 0) 418 return -1; 419 p += size; 420 } 421 avctx->extradata_size = p - avctx->extradata; 422 } 423 return 0; 424} 425 426#define OFFSET(x) offsetof(XavsContext, x) 427#define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM 428static const AVOption options[] = { 429 { "crf", "Select the quality for constant quality mode", OFFSET(crf), AV_OPT_TYPE_FLOAT, {.dbl = -1 }, -1, FLT_MAX, VE }, 430 { "qp", "Constant quantization parameter rate control method",OFFSET(cqp), AV_OPT_TYPE_INT, {.i64 = -1 }, -1, INT_MAX, VE }, 431 { "b-bias", "Influences how often B-frames are used", OFFSET(b_bias), AV_OPT_TYPE_INT, {.i64 = INT_MIN}, INT_MIN, INT_MAX, VE }, 432 { "cplxblur", "Reduce fluctuations in QP (before curve compression)", OFFSET(cplxblur), AV_OPT_TYPE_FLOAT, {.dbl = -1 }, -1, FLT_MAX, VE}, 433 { "direct-pred", "Direct MV prediction mode", OFFSET(direct_pred), AV_OPT_TYPE_INT, {.i64 = -1 }, -1, INT_MAX, VE, "direct-pred" }, 434 { "none", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_DIRECT_PRED_NONE }, 0, 0, VE, "direct-pred" }, 435 { "spatial", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_DIRECT_PRED_SPATIAL }, 0, 0, VE, "direct-pred" }, 436 { "temporal", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_DIRECT_PRED_TEMPORAL }, 0, 0, VE, "direct-pred" }, 437 { "auto", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_DIRECT_PRED_AUTO }, 0, 0, VE, "direct-pred" }, 438 { "aud", "Use access unit delimiters.", OFFSET(aud), AV_OPT_TYPE_BOOL, {.i64 = -1 }, -1, 1, VE}, 439 { "mbtree", "Use macroblock tree ratecontrol.", OFFSET(mbtree), AV_OPT_TYPE_BOOL, {.i64 = -1 }, -1, 1, VE}, 440 { "mixed-refs", "One reference per partition, as opposed to one reference per macroblock", OFFSET(mixed_refs), AV_OPT_TYPE_BOOL, {.i64 = -1}, -1, 1, VE }, 441 { "fast-pskip", NULL, OFFSET(fast_pskip), AV_OPT_TYPE_BOOL, {.i64 = -1 }, -1, 1, VE}, 442 { "motion-est", "Set motion estimation method", OFFSET(motion_est), AV_OPT_TYPE_INT, { .i64 = XAVS_ME_DIA }, -1, XAVS_ME_TESA, VE, "motion-est"}, 443 { "dia", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_ME_DIA }, INT_MIN, INT_MAX, VE, "motion-est" }, 444 { "hex", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_ME_HEX }, INT_MIN, INT_MAX, VE, "motion-est" }, 445 { "umh", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_ME_UMH }, INT_MIN, INT_MAX, VE, "motion-est" }, 446 { "esa", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_ME_ESA }, INT_MIN, INT_MAX, VE, "motion-est" }, 447 { "tesa", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_ME_TESA }, INT_MIN, INT_MAX, VE, "motion-est" }, 448 { "b_strategy", "Strategy to choose between I/P/B-frames", OFFSET(b_frame_strategy), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, 2, VE}, 449 { "chromaoffset", "QP difference between chroma and luma", OFFSET(chroma_offset), AV_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX, VE}, 450 { "sc_threshold", "Scene change threshold", OFFSET(scenechange_threshold), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, VE}, 451 { "noise_reduction", "Noise reduction", OFFSET(noise_reduction), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, VE}, 452 453 { NULL }, 454}; 455 456static const AVClass xavs_class = { 457 .class_name = "libxavs", 458 .item_name = av_default_item_name, 459 .option = options, 460 .version = LIBAVUTIL_VERSION_INT, 461}; 462 463static const AVCodecDefault xavs_defaults[] = { 464 { "b", "0" }, 465 { NULL }, 466}; 467 468AVCodec ff_libxavs_encoder = { 469 .name = "libxavs", 470 .long_name = NULL_IF_CONFIG_SMALL("libxavs Chinese AVS (Audio Video Standard)"), 471 .type = AVMEDIA_TYPE_VIDEO, 472 .id = AV_CODEC_ID_CAVS, 473 .priv_data_size = sizeof(XavsContext), 474 .init = XAVS_init, 475 .encode2 = XAVS_frame, 476 .close = XAVS_close, 477 .capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_AUTO_THREADS, 478 .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE }, 479 .priv_class = &xavs_class, 480 .defaults = xavs_defaults, 481 .wrapper_name = "libxavs", 482};