1/* 2 * Copyright (c) 2010, Google, Inc. 3 * 4 * This file is part of Libav. 5 * 6 * Libav is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Lesser General Public 8 * License as published by the Free Software Foundation; either 9 * version 2.1 of the License, or (at your option) any later version. 10 * 11 * Libav is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Lesser General Public License for more details. 15 * 16 * You should have received a copy of the GNU Lesser General Public 17 * License along with Libav; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 19 */ 20 21/** 22 * @file 23 * VP8 encoder support via libvpx 24 */ 25 26#define VPX_DISABLE_CTRL_TYPECHECKS 1 27#define VPX_CODEC_DISABLE_COMPAT 1 28#include <vpx/vpx_encoder.h> 29#include <vpx/vp8cx.h> 30 31#include "avcodec.h" 32#include "internal.h" 33#include "libavutil/base64.h" 34#include "libavutil/mathematics.h" 35#include "libavutil/opt.h" 36 37/** 38 * Portion of struct vpx_codec_cx_pkt from vpx_encoder.h. 39 * One encoded frame returned from the library. 40 */ 41struct FrameListData { 42 void *buf; /**< compressed data buffer */ 43 size_t sz; /**< length of compressed data */ 44 int64_t pts; /**< time stamp to show frame 45 (in timebase units) */ 46 unsigned long duration; /**< duration to show frame 47 (in timebase units) */ 48 uint32_t flags; /**< flags for this frame */ 49 struct FrameListData *next; 50}; 51 52typedef struct VP8EncoderContext { 53 AVClass *class; 54 struct vpx_codec_ctx encoder; 55 struct vpx_image rawimg; 56 struct vpx_fixed_buf twopass_stats; 57 unsigned long deadline; //i.e., RT/GOOD/BEST 58 struct FrameListData *coded_frame_list; 59 int cpu_used; 60 int auto_alt_ref; 61 int arnr_max_frames; 62 int arnr_strength; 63 int arnr_type; 64 int lag_in_frames; 65 int error_resilient; 66} VP8Context; 67 68/** String mappings for enum vp8e_enc_control_id */ 69static const char *ctlidstr[] = { 70 [VP8E_UPD_ENTROPY] = "VP8E_UPD_ENTROPY", 71 [VP8E_UPD_REFERENCE] = "VP8E_UPD_REFERENCE", 72 [VP8E_USE_REFERENCE] = "VP8E_USE_REFERENCE", 73 [VP8E_SET_ROI_MAP] = "VP8E_SET_ROI_MAP", 74 [VP8E_SET_ACTIVEMAP] = "VP8E_SET_ACTIVEMAP", 75 [VP8E_SET_SCALEMODE] = "VP8E_SET_SCALEMODE", 76 [VP8E_SET_CPUUSED] = "VP8E_SET_CPUUSED", 77 [VP8E_SET_ENABLEAUTOALTREF] = "VP8E_SET_ENABLEAUTOALTREF", 78 [VP8E_SET_NOISE_SENSITIVITY] = "VP8E_SET_NOISE_SENSITIVITY", 79 [VP8E_SET_SHARPNESS] = "VP8E_SET_SHARPNESS", 80 [VP8E_SET_STATIC_THRESHOLD] = "VP8E_SET_STATIC_THRESHOLD", 81 [VP8E_SET_TOKEN_PARTITIONS] = "VP8E_SET_TOKEN_PARTITIONS", 82 [VP8E_GET_LAST_QUANTIZER] = "VP8E_GET_LAST_QUANTIZER", 83 [VP8E_SET_ARNR_MAXFRAMES] = "VP8E_SET_ARNR_MAXFRAMES", 84 [VP8E_SET_ARNR_STRENGTH] = "VP8E_SET_ARNR_STRENGTH", 85 [VP8E_SET_ARNR_TYPE] = "VP8E_SET_ARNR_TYPE", 86}; 87 88static av_cold void log_encoder_error(AVCodecContext *avctx, const char *desc) 89{ 90 VP8Context *ctx = avctx->priv_data; 91 const char *error = vpx_codec_error(&ctx->encoder); 92 const char *detail = vpx_codec_error_detail(&ctx->encoder); 93 94 av_log(avctx, AV_LOG_ERROR, "%s: %s\n", desc, error); 95 if (detail) 96 av_log(avctx, AV_LOG_ERROR, " Additional information: %s\n", detail); 97} 98 99static av_cold void dump_enc_cfg(AVCodecContext *avctx, 100 const struct vpx_codec_enc_cfg *cfg) 101{ 102 int width = -30; 103 int level = AV_LOG_DEBUG; 104 105 av_log(avctx, level, "vpx_codec_enc_cfg\n"); 106 av_log(avctx, level, "generic settings\n" 107 " %*s%u\n %*s%u\n %*s%u\n %*s%u\n %*s%u\n" 108 " %*s{%u/%u}\n %*s%u\n %*s%d\n %*s%u\n", 109 width, "g_usage:", cfg->g_usage, 110 width, "g_threads:", cfg->g_threads, 111 width, "g_profile:", cfg->g_profile, 112 width, "g_w:", cfg->g_w, 113 width, "g_h:", cfg->g_h, 114 width, "g_timebase:", cfg->g_timebase.num, cfg->g_timebase.den, 115 width, "g_error_resilient:", cfg->g_error_resilient, 116 width, "g_pass:", cfg->g_pass, 117 width, "g_lag_in_frames:", cfg->g_lag_in_frames); 118 av_log(avctx, level, "rate control settings\n" 119 " %*s%u\n %*s%u\n %*s%u\n %*s%u\n" 120 " %*s%d\n %*s%p(%zu)\n %*s%u\n", 121 width, "rc_dropframe_thresh:", cfg->rc_dropframe_thresh, 122 width, "rc_resize_allowed:", cfg->rc_resize_allowed, 123 width, "rc_resize_up_thresh:", cfg->rc_resize_up_thresh, 124 width, "rc_resize_down_thresh:", cfg->rc_resize_down_thresh, 125 width, "rc_end_usage:", cfg->rc_end_usage, 126 width, "rc_twopass_stats_in:", cfg->rc_twopass_stats_in.buf, cfg->rc_twopass_stats_in.sz, 127 width, "rc_target_bitrate:", cfg->rc_target_bitrate); 128 av_log(avctx, level, "quantizer settings\n" 129 " %*s%u\n %*s%u\n", 130 width, "rc_min_quantizer:", cfg->rc_min_quantizer, 131 width, "rc_max_quantizer:", cfg->rc_max_quantizer); 132 av_log(avctx, level, "bitrate tolerance\n" 133 " %*s%u\n %*s%u\n", 134 width, "rc_undershoot_pct:", cfg->rc_undershoot_pct, 135 width, "rc_overshoot_pct:", cfg->rc_overshoot_pct); 136 av_log(avctx, level, "decoder buffer model\n" 137 " %*s%u\n %*s%u\n %*s%u\n", 138 width, "rc_buf_sz:", cfg->rc_buf_sz, 139 width, "rc_buf_initial_sz:", cfg->rc_buf_initial_sz, 140 width, "rc_buf_optimal_sz:", cfg->rc_buf_optimal_sz); 141 av_log(avctx, level, "2 pass rate control settings\n" 142 " %*s%u\n %*s%u\n %*s%u\n", 143 width, "rc_2pass_vbr_bias_pct:", cfg->rc_2pass_vbr_bias_pct, 144 width, "rc_2pass_vbr_minsection_pct:", cfg->rc_2pass_vbr_minsection_pct, 145 width, "rc_2pass_vbr_maxsection_pct:", cfg->rc_2pass_vbr_maxsection_pct); 146 av_log(avctx, level, "keyframing settings\n" 147 " %*s%d\n %*s%u\n %*s%u\n", 148 width, "kf_mode:", cfg->kf_mode, 149 width, "kf_min_dist:", cfg->kf_min_dist, 150 width, "kf_max_dist:", cfg->kf_max_dist); 151 av_log(avctx, level, "\n"); 152} 153 154static void coded_frame_add(void *list, struct FrameListData *cx_frame) 155{ 156 struct FrameListData **p = list; 157 158 while (*p != NULL) 159 p = &(*p)->next; 160 *p = cx_frame; 161 cx_frame->next = NULL; 162} 163 164static av_cold void free_coded_frame(struct FrameListData *cx_frame) 165{ 166 av_freep(&cx_frame->buf); 167 av_freep(&cx_frame); 168} 169 170static av_cold void free_frame_list(struct FrameListData *list) 171{ 172 struct FrameListData *p = list; 173 174 while (p) { 175 list = list->next; 176 free_coded_frame(p); 177 p = list; 178 } 179} 180 181static av_cold int codecctl_int(AVCodecContext *avctx, 182 enum vp8e_enc_control_id id, int val) 183{ 184 VP8Context *ctx = avctx->priv_data; 185 char buf[80]; 186 int width = -30; 187 int res; 188 189 snprintf(buf, sizeof(buf), "%s:", ctlidstr[id]); 190 av_log(avctx, AV_LOG_DEBUG, " %*s%d\n", width, buf, val); 191 192 res = vpx_codec_control(&ctx->encoder, id, val); 193 if (res != VPX_CODEC_OK) { 194 snprintf(buf, sizeof(buf), "Failed to set %s codec control", 195 ctlidstr[id]); 196 log_encoder_error(avctx, buf); 197 } 198 199 return res == VPX_CODEC_OK ? 0 : AVERROR(EINVAL); 200} 201 202static av_cold int vp8_free(AVCodecContext *avctx) 203{ 204 VP8Context *ctx = avctx->priv_data; 205 206 vpx_codec_destroy(&ctx->encoder); 207 av_freep(&ctx->twopass_stats.buf); 208 av_freep(&avctx->coded_frame); 209 av_freep(&avctx->stats_out); 210 free_frame_list(ctx->coded_frame_list); 211 return 0; 212} 213 214static av_cold int vp8_init(AVCodecContext *avctx) 215{ 216 VP8Context *ctx = avctx->priv_data; 217 const struct vpx_codec_iface *iface = &vpx_codec_vp8_cx_algo; 218 struct vpx_codec_enc_cfg enccfg; 219 int res; 220 221 av_log(avctx, AV_LOG_INFO, "%s\n", vpx_codec_version_str()); 222 av_log(avctx, AV_LOG_VERBOSE, "%s\n", vpx_codec_build_config()); 223 224 if ((res = vpx_codec_enc_config_default(iface, &enccfg, 0)) != VPX_CODEC_OK) { 225 av_log(avctx, AV_LOG_ERROR, "Failed to get config: %s\n", 226 vpx_codec_err_to_string(res)); 227 return AVERROR(EINVAL); 228 } 229 dump_enc_cfg(avctx, &enccfg); 230 231 enccfg.g_w = avctx->width; 232 enccfg.g_h = avctx->height; 233 enccfg.g_timebase.num = avctx->time_base.num; 234 enccfg.g_timebase.den = avctx->time_base.den; 235 enccfg.g_threads = avctx->thread_count; 236 237 if (ctx->lag_in_frames >= 0) 238 enccfg.g_lag_in_frames = ctx->lag_in_frames; 239 240 if (avctx->flags & CODEC_FLAG_PASS1) 241 enccfg.g_pass = VPX_RC_FIRST_PASS; 242 else if (avctx->flags & CODEC_FLAG_PASS2) 243 enccfg.g_pass = VPX_RC_LAST_PASS; 244 else 245 enccfg.g_pass = VPX_RC_ONE_PASS; 246 247 if (avctx->rc_min_rate == avctx->rc_max_rate && 248 avctx->rc_min_rate == avctx->bit_rate) 249 enccfg.rc_end_usage = VPX_CBR; 250 enccfg.rc_target_bitrate = av_rescale_rnd(avctx->bit_rate, 1, 1000, 251 AV_ROUND_NEAR_INF); 252 if (avctx->qmin > 0) 253 enccfg.rc_min_quantizer = avctx->qmin; 254 if (avctx->qmax > 0) 255 enccfg.rc_max_quantizer = avctx->qmax; 256 enccfg.rc_dropframe_thresh = avctx->frame_skip_threshold; 257 258 //0-100 (0 => CBR, 100 => VBR) 259 enccfg.rc_2pass_vbr_bias_pct = round(avctx->qcompress * 100); 260 enccfg.rc_2pass_vbr_minsection_pct = 261 avctx->rc_min_rate * 100LL / avctx->bit_rate; 262 if (avctx->rc_max_rate) 263 enccfg.rc_2pass_vbr_maxsection_pct = 264 avctx->rc_max_rate * 100LL / avctx->bit_rate; 265 266 if (avctx->rc_buffer_size) 267 enccfg.rc_buf_sz = 268 avctx->rc_buffer_size * 1000LL / avctx->bit_rate; 269 if (avctx->rc_initial_buffer_occupancy) 270 enccfg.rc_buf_initial_sz = 271 avctx->rc_initial_buffer_occupancy * 1000LL / avctx->bit_rate; 272 enccfg.rc_buf_optimal_sz = enccfg.rc_buf_sz * 5 / 6; 273 274 //_enc_init() will balk if kf_min_dist differs from max w/VPX_KF_AUTO 275 if (avctx->keyint_min >= 0 && avctx->keyint_min == avctx->gop_size) 276 enccfg.kf_min_dist = avctx->keyint_min; 277 if (avctx->gop_size >= 0) 278 enccfg.kf_max_dist = avctx->gop_size; 279 280 if (enccfg.g_pass == VPX_RC_FIRST_PASS) 281 enccfg.g_lag_in_frames = 0; 282 else if (enccfg.g_pass == VPX_RC_LAST_PASS) { 283 int decode_size; 284 285 if (!avctx->stats_in) { 286 av_log(avctx, AV_LOG_ERROR, "No stats file for second pass\n"); 287 return AVERROR_INVALIDDATA; 288 } 289 290 ctx->twopass_stats.sz = strlen(avctx->stats_in) * 3 / 4; 291 ctx->twopass_stats.buf = av_malloc(ctx->twopass_stats.sz); 292 if (!ctx->twopass_stats.buf) { 293 av_log(avctx, AV_LOG_ERROR, 294 "Stat buffer alloc (%zu bytes) failed\n", 295 ctx->twopass_stats.sz); 296 return AVERROR(ENOMEM); 297 } 298 decode_size = av_base64_decode(ctx->twopass_stats.buf, avctx->stats_in, 299 ctx->twopass_stats.sz); 300 if (decode_size < 0) { 301 av_log(avctx, AV_LOG_ERROR, "Stat buffer decode failed\n"); 302 return AVERROR_INVALIDDATA; 303 } 304 305 ctx->twopass_stats.sz = decode_size; 306 enccfg.rc_twopass_stats_in = ctx->twopass_stats; 307 } 308 309 /* 0-3: For non-zero values the encoder increasingly optimizes for reduced 310 complexity playback on low powered devices at the expense of encode 311 quality. */ 312 if (avctx->profile != FF_PROFILE_UNKNOWN) 313 enccfg.g_profile = avctx->profile; 314 315 enccfg.g_error_resilient = ctx->error_resilient; 316 317 dump_enc_cfg(avctx, &enccfg); 318 /* Construct Encoder Context */ 319 res = vpx_codec_enc_init(&ctx->encoder, iface, &enccfg, 0); 320 if (res != VPX_CODEC_OK) { 321 log_encoder_error(avctx, "Failed to initialize encoder"); 322 return AVERROR(EINVAL); 323 } 324 325 //codec control failures are currently treated only as warnings 326 av_log(avctx, AV_LOG_DEBUG, "vpx_codec_control\n"); 327 if (ctx->cpu_used != INT_MIN) 328 codecctl_int(avctx, VP8E_SET_CPUUSED, ctx->cpu_used); 329 if (ctx->auto_alt_ref >= 0) 330 codecctl_int(avctx, VP8E_SET_ENABLEAUTOALTREF, ctx->auto_alt_ref); 331 if (ctx->arnr_max_frames >= 0) 332 codecctl_int(avctx, VP8E_SET_ARNR_MAXFRAMES, ctx->arnr_max_frames); 333 if (ctx->arnr_strength >= 0) 334 codecctl_int(avctx, VP8E_SET_ARNR_STRENGTH, ctx->arnr_strength); 335 if (ctx->arnr_type >= 0) 336 codecctl_int(avctx, VP8E_SET_ARNR_TYPE, ctx->arnr_type); 337 codecctl_int(avctx, VP8E_SET_NOISE_SENSITIVITY, avctx->noise_reduction); 338 codecctl_int(avctx, VP8E_SET_TOKEN_PARTITIONS, av_log2(avctx->slices)); 339 codecctl_int(avctx, VP8E_SET_STATIC_THRESHOLD, avctx->mb_threshold); 340 341 //provide dummy value to initialize wrapper, values will be updated each _encode() 342 vpx_img_wrap(&ctx->rawimg, VPX_IMG_FMT_I420, avctx->width, avctx->height, 1, 343 (unsigned char*)1); 344 345 avctx->coded_frame = avcodec_alloc_frame(); 346 if (!avctx->coded_frame) { 347 av_log(avctx, AV_LOG_ERROR, "Error allocating coded frame\n"); 348 vp8_free(avctx); 349 return AVERROR(ENOMEM); 350 } 351 return 0; 352} 353 354static inline void cx_pktcpy(struct FrameListData *dst, 355 const struct vpx_codec_cx_pkt *src) 356{ 357 dst->pts = src->data.frame.pts; 358 dst->duration = src->data.frame.duration; 359 dst->flags = src->data.frame.flags; 360 dst->sz = src->data.frame.sz; 361 dst->buf = src->data.frame.buf; 362} 363 364/** 365 * Store coded frame information in format suitable for return from encode(). 366 * 367 * Write buffer information from @a cx_frame to @a buf & @a buf_size. 368 * Timing/frame details to @a coded_frame. 369 * @return Frame size written to @a buf on success 370 * @return AVERROR(EINVAL) on error 371 */ 372static int storeframe(AVCodecContext *avctx, struct FrameListData *cx_frame, 373 uint8_t *buf, int buf_size, AVFrame *coded_frame) 374{ 375 if ((int) cx_frame->sz <= buf_size) { 376 buf_size = cx_frame->sz; 377 memcpy(buf, cx_frame->buf, buf_size); 378 coded_frame->pts = cx_frame->pts; 379 coded_frame->key_frame = !!(cx_frame->flags & VPX_FRAME_IS_KEY); 380 381 if (coded_frame->key_frame) 382 coded_frame->pict_type = AV_PICTURE_TYPE_I; 383 else 384 coded_frame->pict_type = AV_PICTURE_TYPE_P; 385 } else { 386 av_log(avctx, AV_LOG_ERROR, 387 "Compressed frame larger than storage provided! (%zu/%d)\n", 388 cx_frame->sz, buf_size); 389 return AVERROR(EINVAL); 390 } 391 return buf_size; 392} 393 394/** 395 * Queue multiple output frames from the encoder, returning the front-most. 396 * In cases where vpx_codec_get_cx_data() returns more than 1 frame append 397 * the frame queue. Return the head frame if available. 398 * @return Stored frame size 399 * @return AVERROR(EINVAL) on output size error 400 * @return AVERROR(ENOMEM) on coded frame queue data allocation error 401 */ 402static int queue_frames(AVCodecContext *avctx, uint8_t *buf, int buf_size, 403 AVFrame *coded_frame) 404{ 405 VP8Context *ctx = avctx->priv_data; 406 const struct vpx_codec_cx_pkt *pkt; 407 const void *iter = NULL; 408 int size = 0; 409 410 if (ctx->coded_frame_list) { 411 struct FrameListData *cx_frame = ctx->coded_frame_list; 412 /* return the leading frame if we've already begun queueing */ 413 size = storeframe(avctx, cx_frame, buf, buf_size, coded_frame); 414 if (size < 0) 415 return AVERROR(EINVAL); 416 ctx->coded_frame_list = cx_frame->next; 417 free_coded_frame(cx_frame); 418 } 419 420 /* consume all available output from the encoder before returning. buffers 421 are only good through the next vpx_codec call */ 422 while ((pkt = vpx_codec_get_cx_data(&ctx->encoder, &iter))) { 423 switch (pkt->kind) { 424 case VPX_CODEC_CX_FRAME_PKT: 425 if (!size) { 426 struct FrameListData cx_frame; 427 428 /* avoid storing the frame when the list is empty and we haven't yet 429 provided a frame for output */ 430 assert(!ctx->coded_frame_list); 431 cx_pktcpy(&cx_frame, pkt); 432 size = storeframe(avctx, &cx_frame, buf, buf_size, coded_frame); 433 if (size < 0) 434 return AVERROR(EINVAL); 435 } else { 436 struct FrameListData *cx_frame = 437 av_malloc(sizeof(struct FrameListData)); 438 439 if (!cx_frame) { 440 av_log(avctx, AV_LOG_ERROR, 441 "Frame queue element alloc failed\n"); 442 return AVERROR(ENOMEM); 443 } 444 cx_pktcpy(cx_frame, pkt); 445 cx_frame->buf = av_malloc(cx_frame->sz); 446 447 if (!cx_frame->buf) { 448 av_log(avctx, AV_LOG_ERROR, 449 "Data buffer alloc (%zu bytes) failed\n", 450 cx_frame->sz); 451 return AVERROR(ENOMEM); 452 } 453 memcpy(cx_frame->buf, pkt->data.frame.buf, pkt->data.frame.sz); 454 coded_frame_add(&ctx->coded_frame_list, cx_frame); 455 } 456 break; 457 case VPX_CODEC_STATS_PKT: { 458 struct vpx_fixed_buf *stats = &ctx->twopass_stats; 459 stats->buf = av_realloc(stats->buf, 460 stats->sz + pkt->data.twopass_stats.sz); 461 if (!stats->buf) { 462 av_log(avctx, AV_LOG_ERROR, "Stat buffer realloc failed\n"); 463 return AVERROR(ENOMEM); 464 } 465 memcpy((uint8_t*)stats->buf + stats->sz, 466 pkt->data.twopass_stats.buf, pkt->data.twopass_stats.sz); 467 stats->sz += pkt->data.twopass_stats.sz; 468 break; 469 } 470 case VPX_CODEC_PSNR_PKT: //FIXME add support for CODEC_FLAG_PSNR 471 case VPX_CODEC_CUSTOM_PKT: 472 //ignore unsupported/unrecognized packet types 473 break; 474 } 475 } 476 477 return size; 478} 479 480static int vp8_encode(AVCodecContext *avctx, uint8_t *buf, int buf_size, 481 void *data) 482{ 483 VP8Context *ctx = avctx->priv_data; 484 AVFrame *frame = data; 485 struct vpx_image *rawimg = NULL; 486 int64_t timestamp = 0; 487 int res, coded_size; 488 489 if (frame) { 490 rawimg = &ctx->rawimg; 491 rawimg->planes[VPX_PLANE_Y] = frame->data[0]; 492 rawimg->planes[VPX_PLANE_U] = frame->data[1]; 493 rawimg->planes[VPX_PLANE_V] = frame->data[2]; 494 rawimg->stride[VPX_PLANE_Y] = frame->linesize[0]; 495 rawimg->stride[VPX_PLANE_U] = frame->linesize[1]; 496 rawimg->stride[VPX_PLANE_V] = frame->linesize[2]; 497 timestamp = frame->pts; 498 } 499 500 res = vpx_codec_encode(&ctx->encoder, rawimg, timestamp, 501 avctx->ticks_per_frame, 0, ctx->deadline); 502 if (res != VPX_CODEC_OK) { 503 log_encoder_error(avctx, "Error encoding frame"); 504 return AVERROR_INVALIDDATA; 505 } 506 coded_size = queue_frames(avctx, buf, buf_size, avctx->coded_frame); 507 508 if (!frame && avctx->flags & CODEC_FLAG_PASS1) { 509 unsigned int b64_size = AV_BASE64_SIZE(ctx->twopass_stats.sz); 510 511 avctx->stats_out = av_malloc(b64_size); 512 if (!avctx->stats_out) { 513 av_log(avctx, AV_LOG_ERROR, "Stat buffer alloc (%d bytes) failed\n", 514 b64_size); 515 return AVERROR(ENOMEM); 516 } 517 av_base64_encode(avctx->stats_out, b64_size, ctx->twopass_stats.buf, 518 ctx->twopass_stats.sz); 519 } 520 return coded_size; 521} 522 523#define OFFSET(x) offsetof(VP8Context, x) 524#define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM 525static const AVOption options[] = { 526 { "cpu-used", "Quality/Speed ratio modifier", OFFSET(cpu_used), AV_OPT_TYPE_INT, {INT_MIN}, INT_MIN, INT_MAX, VE}, 527 { "auto-alt-ref", "Enable use of alternate reference " 528 "frames (2-pass only)", OFFSET(auto_alt_ref), AV_OPT_TYPE_INT, {-1}, -1, 1, VE}, 529 { "lag-in-frames", "Number of frames to look ahead for " 530 "alternate reference frame selection", OFFSET(lag_in_frames), AV_OPT_TYPE_INT, {-1}, -1, INT_MAX, VE}, 531 { "arnr-maxframes", "altref noise reduction max frame count", OFFSET(arnr_max_frames), AV_OPT_TYPE_INT, {-1}, -1, INT_MAX, VE}, 532 { "arnr-strength", "altref noise reduction filter strength", OFFSET(arnr_strength), AV_OPT_TYPE_INT, {-1}, -1, INT_MAX, VE}, 533 { "arnr-type", "altref noise reduction filter type", OFFSET(arnr_type), AV_OPT_TYPE_INT, {-1}, -1, INT_MAX, VE, "arnr_type"}, 534 { "backward", NULL, 0, AV_OPT_TYPE_CONST, {1}, 0, 0, VE, "arnr_type" }, 535 { "forward", NULL, 0, AV_OPT_TYPE_CONST, {2}, 0, 0, VE, "arnr_type" }, 536 { "centered", NULL, 0, AV_OPT_TYPE_CONST, {3}, 0, 0, VE, "arnr_type" }, 537 { "deadline", "Time to spend encoding, in microseconds.", OFFSET(deadline), AV_OPT_TYPE_INT, {VPX_DL_GOOD_QUALITY}, INT_MIN, INT_MAX, VE, "quality"}, 538 { "best", NULL, 0, AV_OPT_TYPE_CONST, {VPX_DL_BEST_QUALITY}, 0, 0, VE, "quality"}, 539 { "good", NULL, 0, AV_OPT_TYPE_CONST, {VPX_DL_GOOD_QUALITY}, 0, 0, VE, "quality"}, 540 { "realtime", NULL, 0, AV_OPT_TYPE_CONST, {VPX_DL_REALTIME}, 0, 0, VE, "quality"}, 541 { "error-resilient", "Error resilience configuration", OFFSET(error_resilient), AV_OPT_TYPE_FLAGS, {0}, INT_MIN, INT_MAX, VE, "er"}, 542#ifdef VPX_ERROR_RESILIENT_DEFAULT 543 { "default", "Improve resiliency against losses of whole frames", 0, AV_OPT_TYPE_CONST, {VPX_ERROR_RESILIENT_DEFAULT}, 0, 0, VE, "er"}, 544 { "partitions", "The frame partitions are independently decodable " 545 "by the bool decoder, meaning that partitions can be decoded even " 546 "though earlier partitions have been lost. Note that intra predicition" 547 " is still done over the partition boundary.", 0, AV_OPT_TYPE_CONST, {VPX_ERROR_RESILIENT_PARTITIONS}, 0, 0, VE, "er"}, 548#endif 549 { NULL } 550}; 551 552static const AVClass class = { 553 .class_name = "libvpx encoder", 554 .item_name = av_default_item_name, 555 .option = options, 556 .version = LIBAVUTIL_VERSION_INT, 557}; 558 559static const AVCodecDefault defaults[] = { 560 { "qmin", "-1" }, 561 { "qmax", "-1" }, 562 { "g", "-1" }, 563 { "keyint_min", "-1" }, 564 { NULL }, 565}; 566 567AVCodec ff_libvpx_encoder = { 568 .name = "libvpx", 569 .type = AVMEDIA_TYPE_VIDEO, 570 .id = CODEC_ID_VP8, 571 .priv_data_size = sizeof(VP8Context), 572 .init = vp8_init, 573 .encode = vp8_encode, 574 .close = vp8_free, 575 .capabilities = CODEC_CAP_DELAY | CODEC_CAP_AUTO_THREADS, 576 .pix_fmts = (const enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_NONE}, 577 .long_name = NULL_IF_CONFIG_SMALL("libvpx VP8"), 578 .priv_class = &class, 579 .defaults = defaults, 580}; 581