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 "codec_internal.h" 31#include "encode.h" 32#include "packet_internal.h" 33#include "libavutil/internal.h" 34#include "libavutil/mem.h" 35#include "libavutil/opt.h" 36 37#define END_OF_STREAM 0x001 38 39#define XAVS_PART_I8X8 0x002 /* Analyze i8x8 (requires 8x8 transform) */ 40#define XAVS_PART_P8X8 0x010 /* Analyze p16x8, p8x16 and p8x8 */ 41#define XAVS_PART_B8X8 0x100 /* Analyze b16x8, b*/ 42 43typedef struct XavsContext { 44 AVClass *class; 45 xavs_param_t params; 46 xavs_t *enc; 47 xavs_picture_t pic; 48 uint8_t *sei; 49 int sei_size; 50 int end_of_stream; 51 float crf; 52 int cqp; 53 int b_bias; 54 float cplxblur; 55 int direct_pred; 56 int aud; 57 int fast_pskip; 58 int motion_est; 59 int mbtree; 60 int mixed_refs; 61 int b_frame_strategy; 62 int chroma_offset; 63 int scenechange_threshold; 64 int noise_reduction; 65 66 int64_t *pts_buffer; 67 int out_frame_count; 68} XavsContext; 69 70static void XAVS_log(void *p, int level, const char *fmt, va_list args) 71{ 72 static const int level_map[] = { 73 [XAVS_LOG_ERROR] = AV_LOG_ERROR, 74 [XAVS_LOG_WARNING] = AV_LOG_WARNING, 75 [XAVS_LOG_INFO] = AV_LOG_INFO, 76 [XAVS_LOG_DEBUG] = AV_LOG_DEBUG 77 }; 78 79 if (level < 0 || level > XAVS_LOG_DEBUG) 80 return; 81 82 av_vlog(p, level_map[level], fmt, args); 83} 84 85static int encode_nals(AVCodecContext *ctx, AVPacket *pkt, 86 xavs_nal_t *nals, int nnal) 87{ 88 XavsContext *x4 = ctx->priv_data; 89 int64_t size = x4->sei_size; 90 uint8_t *p, *p_end; 91 int i, s, ret; 92 93 if (!nnal) 94 return 0; 95 96 for (i = 0; i < nnal; i++) 97 size += 3U + nals[i].i_payload; 98 99 if ((ret = ff_get_encode_buffer(ctx, pkt, size, 0)) < 0) 100 return ret; 101 p = pkt->data; 102 p_end = pkt->data + size; 103 104 /* Write the SEI as part of the first frame. */ 105 if (x4->sei_size > 0 && nnal > 0) { 106 memcpy(p, x4->sei, x4->sei_size); 107 p += x4->sei_size; 108 x4->sei_size = 0; 109 } 110 111 for (i = 0; i < nnal; i++) { 112 int size = p_end - p; 113 s = xavs_nal_encode(p, &size, 1, nals + i); 114 if (s < 0) 115 return AVERROR_EXTERNAL; 116 if (s != 3U + nals[i].i_payload) 117 return AVERROR_EXTERNAL; 118 p += s; 119 } 120 121 return 1; 122} 123 124static int XAVS_frame(AVCodecContext *avctx, AVPacket *pkt, 125 const AVFrame *frame, int *got_packet) 126{ 127 XavsContext *x4 = avctx->priv_data; 128 xavs_nal_t *nal; 129 int nnal, i, ret; 130 xavs_picture_t pic_out; 131 int pict_type; 132 133 x4->pic.img.i_csp = XAVS_CSP_I420; 134 x4->pic.img.i_plane = 3; 135 136 if (frame) { 137 for (i = 0; i < 3; i++) { 138 x4->pic.img.plane[i] = frame->data[i]; 139 x4->pic.img.i_stride[i] = frame->linesize[i]; 140 } 141 142 x4->pic.i_pts = frame->pts; 143 x4->pic.i_type = XAVS_TYPE_AUTO; 144 x4->pts_buffer[avctx->frame_number % (avctx->max_b_frames+1)] = frame->pts; 145 } 146 147 if (xavs_encoder_encode(x4->enc, &nal, &nnal, 148 frame? &x4->pic: NULL, &pic_out) < 0) 149 return AVERROR_EXTERNAL; 150 151 ret = encode_nals(avctx, pkt, nal, nnal); 152 153 if (ret < 0) 154 return ret; 155 156 if (!ret) { 157 if (!frame && !(x4->end_of_stream)) { 158 if ((ret = ff_get_encode_buffer(avctx, pkt, 4, 0)) < 0) 159 return ret; 160 161 pkt->data[0] = 0x0; 162 pkt->data[1] = 0x0; 163 pkt->data[2] = 0x01; 164 pkt->data[3] = 0xb1; 165 pkt->dts = 2*x4->pts_buffer[(x4->out_frame_count-1)%(avctx->max_b_frames+1)] - 166 x4->pts_buffer[(x4->out_frame_count-2)%(avctx->max_b_frames+1)]; 167 x4->end_of_stream = END_OF_STREAM; 168 *got_packet = 1; 169 } 170 return 0; 171 } 172 173 pkt->pts = pic_out.i_pts; 174 if (avctx->has_b_frames) { 175 if (!x4->out_frame_count) 176 pkt->dts = pkt->pts - (x4->pts_buffer[1] - x4->pts_buffer[0]); 177 else 178 pkt->dts = x4->pts_buffer[(x4->out_frame_count-1)%(avctx->max_b_frames+1)]; 179 } else 180 pkt->dts = pkt->pts; 181 182 switch (pic_out.i_type) { 183 case XAVS_TYPE_IDR: 184 case XAVS_TYPE_I: 185 pict_type = AV_PICTURE_TYPE_I; 186 break; 187 case XAVS_TYPE_P: 188 pict_type = AV_PICTURE_TYPE_P; 189 break; 190 case XAVS_TYPE_B: 191 case XAVS_TYPE_BREF: 192 pict_type = AV_PICTURE_TYPE_B; 193 break; 194 default: 195 pict_type = AV_PICTURE_TYPE_NONE; 196 } 197 198 /* There is no IDR frame in AVS JiZhun */ 199 /* Sequence header is used as a flag */ 200 if (pic_out.i_type == XAVS_TYPE_I) { 201 pkt->flags |= AV_PKT_FLAG_KEY; 202 } 203 204 ff_side_data_set_encoder_stats(pkt, (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA, NULL, 0, pict_type); 205 206 x4->out_frame_count++; 207 *got_packet = ret; 208 return 0; 209} 210 211static av_cold int XAVS_close(AVCodecContext *avctx) 212{ 213 XavsContext *x4 = avctx->priv_data; 214 215 av_freep(&x4->sei); 216 av_freep(&x4->pts_buffer); 217 218 if (x4->enc) 219 xavs_encoder_close(x4->enc); 220 221 return 0; 222} 223 224static av_cold int XAVS_init(AVCodecContext *avctx) 225{ 226 XavsContext *x4 = avctx->priv_data; 227 228 x4->sei_size = 0; 229 xavs_param_default(&x4->params); 230 231 x4->params.pf_log = XAVS_log; 232 x4->params.p_log_private = avctx; 233 x4->params.i_keyint_max = avctx->gop_size; 234 if (avctx->bit_rate) { 235 x4->params.rc.i_bitrate = avctx->bit_rate / 1000; 236 x4->params.rc.i_rc_method = XAVS_RC_ABR; 237 } 238 x4->params.rc.i_vbv_buffer_size = avctx->rc_buffer_size / 1000; 239 x4->params.rc.i_vbv_max_bitrate = avctx->rc_max_rate / 1000; 240 x4->params.rc.b_stat_write = avctx->flags & AV_CODEC_FLAG_PASS1; 241 if (avctx->flags & AV_CODEC_FLAG_PASS2) { 242 x4->params.rc.b_stat_read = 1; 243 } else { 244 if (x4->crf >= 0) { 245 x4->params.rc.i_rc_method = XAVS_RC_CRF; 246 x4->params.rc.f_rf_constant = x4->crf; 247 } else if (x4->cqp >= 0) { 248 x4->params.rc.i_rc_method = XAVS_RC_CQP; 249 x4->params.rc.i_qp_constant = x4->cqp; 250 } 251 } 252 253 if (x4->aud >= 0) 254 x4->params.b_aud = x4->aud; 255 if (x4->mbtree >= 0) 256 x4->params.rc.b_mb_tree = x4->mbtree; 257 if (x4->direct_pred >= 0) 258 x4->params.analyse.i_direct_mv_pred = x4->direct_pred; 259 if (x4->fast_pskip >= 0) 260 x4->params.analyse.b_fast_pskip = x4->fast_pskip; 261 if (x4->motion_est >= 0) 262 x4->params.analyse.i_me_method = x4->motion_est; 263 if (x4->mixed_refs >= 0) 264 x4->params.analyse.b_mixed_references = x4->mixed_refs; 265 if (x4->b_bias != INT_MIN) 266 x4->params.i_bframe_bias = x4->b_bias; 267 if (x4->cplxblur >= 0) 268 x4->params.rc.f_complexity_blur = x4->cplxblur; 269 270 x4->params.i_bframe = avctx->max_b_frames; 271 /* cabac is not included in AVS JiZhun Profile */ 272 x4->params.b_cabac = 0; 273 274 x4->params.i_bframe_adaptive = x4->b_frame_strategy; 275 276 avctx->has_b_frames = !!avctx->max_b_frames; 277 278 /* AVS doesn't allow B picture as reference */ 279 /* The max allowed reference frame number of B is 2 */ 280 x4->params.i_keyint_min = avctx->keyint_min; 281 if (x4->params.i_keyint_min > x4->params.i_keyint_max) 282 x4->params.i_keyint_min = x4->params.i_keyint_max; 283 284 x4->params.i_scenecut_threshold = x4->scenechange_threshold; 285 286 // x4->params.b_deblocking_filter = avctx->flags & AV_CODEC_FLAG_LOOP_FILTER; 287 288 x4->params.rc.i_qp_min = avctx->qmin; 289 x4->params.rc.i_qp_max = avctx->qmax; 290 x4->params.rc.i_qp_step = avctx->max_qdiff; 291 292 x4->params.rc.f_qcompress = avctx->qcompress; /* 0.0 => cbr, 1.0 => constant qp */ 293 x4->params.rc.f_qblur = avctx->qblur; /* temporally blur quants */ 294 295 x4->params.i_frame_reference = avctx->refs; 296 297 x4->params.i_width = avctx->width; 298 x4->params.i_height = avctx->height; 299 x4->params.vui.i_sar_width = avctx->sample_aspect_ratio.num; 300 x4->params.vui.i_sar_height = avctx->sample_aspect_ratio.den; 301 /* This is only used for counting the fps */ 302 x4->params.i_fps_num = avctx->time_base.den; 303 x4->params.i_fps_den = avctx->time_base.num; 304 x4->params.analyse.inter = XAVS_ANALYSE_I8x8 |XAVS_ANALYSE_PSUB16x16| XAVS_ANALYSE_BSUB16x16; 305 306 x4->params.analyse.i_me_range = avctx->me_range; 307 x4->params.analyse.i_subpel_refine = avctx->me_subpel_quality; 308 309 x4->params.analyse.b_chroma_me = avctx->me_cmp & FF_CMP_CHROMA; 310 /* AVS P2 only enables 8x8 transform */ 311 x4->params.analyse.b_transform_8x8 = 1; //avctx->flags2 & AV_CODEC_FLAG2_8X8DCT; 312 313 x4->params.analyse.i_trellis = avctx->trellis; 314 315 x4->params.analyse.i_noise_reduction = x4->noise_reduction; 316 317 if (avctx->level > 0) 318 x4->params.i_level_idc = avctx->level; 319 320 if (avctx->bit_rate > 0) 321 x4->params.rc.f_rate_tolerance = 322 (float)avctx->bit_rate_tolerance / avctx->bit_rate; 323 324 if ((avctx->rc_buffer_size) && 325 (avctx->rc_initial_buffer_occupancy <= avctx->rc_buffer_size)) { 326 x4->params.rc.f_vbv_buffer_init = 327 (float)avctx->rc_initial_buffer_occupancy / avctx->rc_buffer_size; 328 } else 329 x4->params.rc.f_vbv_buffer_init = 0.9; 330 331 /* TAG:do we have MB tree RC method */ 332 /* what is the RC method we are now using? Default NO */ 333 x4->params.rc.f_ip_factor = 1 / fabs(avctx->i_quant_factor); 334 x4->params.rc.f_pb_factor = avctx->b_quant_factor; 335 336 x4->params.analyse.i_chroma_qp_offset = x4->chroma_offset; 337 338 x4->params.analyse.b_psnr = avctx->flags & AV_CODEC_FLAG_PSNR; 339 x4->params.i_log_level = XAVS_LOG_DEBUG; 340 x4->params.i_threads = avctx->thread_count; 341 x4->params.b_interlaced = avctx->flags & AV_CODEC_FLAG_INTERLACED_DCT; 342 343 if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER) 344 x4->params.b_repeat_headers = 0; 345 346 x4->enc = xavs_encoder_open(&x4->params); 347 if (!x4->enc) 348 return AVERROR_EXTERNAL; 349 350 if (!FF_ALLOCZ_TYPED_ARRAY(x4->pts_buffer, avctx->max_b_frames + 1)) 351 return AVERROR(ENOMEM); 352 353 /* TAG: Do we have GLOBAL HEADER in AVS */ 354 /* We Have PPS and SPS in AVS */ 355 if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER && 0) { 356 xavs_nal_t *nal; 357 int nnal, s, i, size; 358 uint8_t *p; 359 360 s = xavs_encoder_headers(x4->enc, &nal, &nnal); 361 362 avctx->extradata = p = av_malloc(s); 363 for (i = 0; i < nnal; i++) { 364 /* Don't put the SEI in extradata. */ 365 if (nal[i].i_type == NAL_SEI) { 366 x4->sei = av_malloc( 5 + nal[i].i_payload * 4 / 3 ); 367 if (xavs_nal_encode(x4->sei, &x4->sei_size, 1, nal + i) < 0) 368 return -1; 369 370 continue; 371 } 372 size = xavs_nal_encode(p, &s, 1, nal + i); 373 if (size < 0) 374 return -1; 375 p += size; 376 } 377 avctx->extradata_size = p - avctx->extradata; 378 } 379 return 0; 380} 381 382#define OFFSET(x) offsetof(XavsContext, x) 383#define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM 384static const AVOption options[] = { 385 { "crf", "Select the quality for constant quality mode", OFFSET(crf), AV_OPT_TYPE_FLOAT, {.dbl = -1 }, -1, FLT_MAX, VE }, 386 { "qp", "Constant quantization parameter rate control method",OFFSET(cqp), AV_OPT_TYPE_INT, {.i64 = -1 }, -1, INT_MAX, VE }, 387 { "b-bias", "Influences how often B-frames are used", OFFSET(b_bias), AV_OPT_TYPE_INT, {.i64 = INT_MIN}, INT_MIN, INT_MAX, VE }, 388 { "cplxblur", "Reduce fluctuations in QP (before curve compression)", OFFSET(cplxblur), AV_OPT_TYPE_FLOAT, {.dbl = -1 }, -1, FLT_MAX, VE}, 389 { "direct-pred", "Direct MV prediction mode", OFFSET(direct_pred), AV_OPT_TYPE_INT, {.i64 = -1 }, -1, INT_MAX, VE, "direct-pred" }, 390 { "none", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_DIRECT_PRED_NONE }, 0, 0, VE, "direct-pred" }, 391 { "spatial", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_DIRECT_PRED_SPATIAL }, 0, 0, VE, "direct-pred" }, 392 { "temporal", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_DIRECT_PRED_TEMPORAL }, 0, 0, VE, "direct-pred" }, 393 { "auto", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_DIRECT_PRED_AUTO }, 0, 0, VE, "direct-pred" }, 394 { "aud", "Use access unit delimiters.", OFFSET(aud), AV_OPT_TYPE_BOOL, {.i64 = -1 }, -1, 1, VE}, 395 { "mbtree", "Use macroblock tree ratecontrol.", OFFSET(mbtree), AV_OPT_TYPE_BOOL, {.i64 = -1 }, -1, 1, VE}, 396 { "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 }, 397 { "fast-pskip", NULL, OFFSET(fast_pskip), AV_OPT_TYPE_BOOL, {.i64 = -1 }, -1, 1, VE}, 398 { "motion-est", "Set motion estimation method", OFFSET(motion_est), AV_OPT_TYPE_INT, { .i64 = XAVS_ME_DIA }, -1, XAVS_ME_TESA, VE, "motion-est"}, 399 { "dia", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_ME_DIA }, INT_MIN, INT_MAX, VE, "motion-est" }, 400 { "hex", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_ME_HEX }, INT_MIN, INT_MAX, VE, "motion-est" }, 401 { "umh", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_ME_UMH }, INT_MIN, INT_MAX, VE, "motion-est" }, 402 { "esa", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_ME_ESA }, INT_MIN, INT_MAX, VE, "motion-est" }, 403 { "tesa", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_ME_TESA }, INT_MIN, INT_MAX, VE, "motion-est" }, 404 { "b_strategy", "Strategy to choose between I/P/B-frames", OFFSET(b_frame_strategy), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, 2, VE}, 405 { "chromaoffset", "QP difference between chroma and luma", OFFSET(chroma_offset), AV_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX, VE}, 406 { "sc_threshold", "Scene change threshold", OFFSET(scenechange_threshold), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, VE}, 407 { "noise_reduction", "Noise reduction", OFFSET(noise_reduction), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, VE}, 408 409 { NULL }, 410}; 411 412static const AVClass xavs_class = { 413 .class_name = "libxavs", 414 .item_name = av_default_item_name, 415 .option = options, 416 .version = LIBAVUTIL_VERSION_INT, 417}; 418 419static const FFCodecDefault xavs_defaults[] = { 420 { "b", "0" }, 421 { NULL }, 422}; 423 424const FFCodec ff_libxavs_encoder = { 425 .p.name = "libxavs", 426 .p.long_name = NULL_IF_CONFIG_SMALL("libxavs Chinese AVS (Audio Video Standard)"), 427 .p.type = AVMEDIA_TYPE_VIDEO, 428 .p.id = AV_CODEC_ID_CAVS, 429 .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY | 430 AV_CODEC_CAP_OTHER_THREADS, 431 .priv_data_size = sizeof(XavsContext), 432 .init = XAVS_init, 433 FF_CODEC_ENCODE_CB(XAVS_frame), 434 .close = XAVS_close, 435 .caps_internal = FF_CODEC_CAP_AUTO_THREADS, 436 .p.pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE }, 437 .p.priv_class = &xavs_class, 438 .defaults = xavs_defaults, 439 .p.wrapper_name = "libxavs", 440}; 441