2 * Copyright (c) 2010, Google, Inc.
4 * This file is part of FFmpeg.
6 * FFmpeg 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.
11 * FFmpeg 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.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 * VP8 encoder support via libvpx
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>
33 #include "libavutil/base64.h"
34 #include "libavutil/mathematics.h"
35 #include "libavutil/opt.h"
38 * Portion of struct vpx_codec_cx_pkt from vpx_encoder.h.
39 * One encoded frame returned from the library.
41 struct 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;
52 typedef struct VP8EncoderContext {
54 struct vpx_codec_ctx encoder;
55 struct vpx_image rawimg;
56 struct vpx_fixed_buf twopass_stats;
57 int deadline; //i.e., RT/GOOD/BEST
58 struct FrameListData *coded_frame_list;
62 * VP8 specific flags, see VP8F_* below.
65 #define VP8F_ERROR_RESILIENT 0x00000001 ///< Enable measures appropriate for streaming over lossy links
66 #define VP8F_AUTO_ALT_REF 0x00000002 ///< Enable automatic alternate reference frame generation
79 /** String mappings for enum vp8e_enc_control_id */
80 static const char *const ctlidstr[] = {
81 [VP8E_UPD_ENTROPY] = "VP8E_UPD_ENTROPY",
82 [VP8E_UPD_REFERENCE] = "VP8E_UPD_REFERENCE",
83 [VP8E_USE_REFERENCE] = "VP8E_USE_REFERENCE",
84 [VP8E_SET_ROI_MAP] = "VP8E_SET_ROI_MAP",
85 [VP8E_SET_ACTIVEMAP] = "VP8E_SET_ACTIVEMAP",
86 [VP8E_SET_SCALEMODE] = "VP8E_SET_SCALEMODE",
87 [VP8E_SET_CPUUSED] = "VP8E_SET_CPUUSED",
88 [VP8E_SET_ENABLEAUTOALTREF] = "VP8E_SET_ENABLEAUTOALTREF",
89 [VP8E_SET_NOISE_SENSITIVITY] = "VP8E_SET_NOISE_SENSITIVITY",
90 [VP8E_SET_SHARPNESS] = "VP8E_SET_SHARPNESS",
91 [VP8E_SET_STATIC_THRESHOLD] = "VP8E_SET_STATIC_THRESHOLD",
92 [VP8E_SET_TOKEN_PARTITIONS] = "VP8E_SET_TOKEN_PARTITIONS",
93 [VP8E_GET_LAST_QUANTIZER] = "VP8E_GET_LAST_QUANTIZER",
94 [VP8E_SET_ARNR_MAXFRAMES] = "VP8E_SET_ARNR_MAXFRAMES",
95 [VP8E_SET_ARNR_STRENGTH] = "VP8E_SET_ARNR_STRENGTH",
96 [VP8E_SET_ARNR_TYPE] = "VP8E_SET_ARNR_TYPE",
97 [VP8E_SET_CQ_LEVEL] = "VP8E_SET_CQ_LEVEL",
100 static av_cold void log_encoder_error(AVCodecContext *avctx, const char *desc)
102 VP8Context *ctx = avctx->priv_data;
103 const char *error = vpx_codec_error(&ctx->encoder);
104 const char *detail = vpx_codec_error_detail(&ctx->encoder);
106 av_log(avctx, AV_LOG_ERROR, "%s: %s\n", desc, error);
108 av_log(avctx, AV_LOG_ERROR, " Additional information: %s\n", detail);
111 static av_cold void dump_enc_cfg(AVCodecContext *avctx,
112 const struct vpx_codec_enc_cfg *cfg)
115 int level = AV_LOG_DEBUG;
117 av_log(avctx, level, "vpx_codec_enc_cfg\n");
118 av_log(avctx, level, "generic settings\n"
119 " %*s%u\n %*s%u\n %*s%u\n %*s%u\n %*s%u\n"
120 " %*s{%u/%u}\n %*s%u\n %*s%d\n %*s%u\n",
121 width, "g_usage:", cfg->g_usage,
122 width, "g_threads:", cfg->g_threads,
123 width, "g_profile:", cfg->g_profile,
124 width, "g_w:", cfg->g_w,
125 width, "g_h:", cfg->g_h,
126 width, "g_timebase:", cfg->g_timebase.num, cfg->g_timebase.den,
127 width, "g_error_resilient:", cfg->g_error_resilient,
128 width, "g_pass:", cfg->g_pass,
129 width, "g_lag_in_frames:", cfg->g_lag_in_frames);
130 av_log(avctx, level, "rate control settings\n"
131 " %*s%u\n %*s%u\n %*s%u\n %*s%u\n"
132 " %*s%d\n %*s%p(%zu)\n %*s%u\n",
133 width, "rc_dropframe_thresh:", cfg->rc_dropframe_thresh,
134 width, "rc_resize_allowed:", cfg->rc_resize_allowed,
135 width, "rc_resize_up_thresh:", cfg->rc_resize_up_thresh,
136 width, "rc_resize_down_thresh:", cfg->rc_resize_down_thresh,
137 width, "rc_end_usage:", cfg->rc_end_usage,
138 width, "rc_twopass_stats_in:", cfg->rc_twopass_stats_in.buf, cfg->rc_twopass_stats_in.sz,
139 width, "rc_target_bitrate:", cfg->rc_target_bitrate);
140 av_log(avctx, level, "quantizer settings\n"
142 width, "rc_min_quantizer:", cfg->rc_min_quantizer,
143 width, "rc_max_quantizer:", cfg->rc_max_quantizer);
144 av_log(avctx, level, "bitrate tolerance\n"
146 width, "rc_undershoot_pct:", cfg->rc_undershoot_pct,
147 width, "rc_overshoot_pct:", cfg->rc_overshoot_pct);
148 av_log(avctx, level, "decoder buffer model\n"
149 " %*s%u\n %*s%u\n %*s%u\n",
150 width, "rc_buf_sz:", cfg->rc_buf_sz,
151 width, "rc_buf_initial_sz:", cfg->rc_buf_initial_sz,
152 width, "rc_buf_optimal_sz:", cfg->rc_buf_optimal_sz);
153 av_log(avctx, level, "2 pass rate control settings\n"
154 " %*s%u\n %*s%u\n %*s%u\n",
155 width, "rc_2pass_vbr_bias_pct:", cfg->rc_2pass_vbr_bias_pct,
156 width, "rc_2pass_vbr_minsection_pct:", cfg->rc_2pass_vbr_minsection_pct,
157 width, "rc_2pass_vbr_maxsection_pct:", cfg->rc_2pass_vbr_maxsection_pct);
158 av_log(avctx, level, "keyframing settings\n"
159 " %*s%d\n %*s%u\n %*s%u\n",
160 width, "kf_mode:", cfg->kf_mode,
161 width, "kf_min_dist:", cfg->kf_min_dist,
162 width, "kf_max_dist:", cfg->kf_max_dist);
163 av_log(avctx, level, "\n");
166 static void coded_frame_add(void *list, struct FrameListData *cx_frame)
168 struct FrameListData **p = list;
173 cx_frame->next = NULL;
176 static av_cold void free_coded_frame(struct FrameListData *cx_frame)
178 av_freep(&cx_frame->buf);
182 static av_cold void free_frame_list(struct FrameListData *list)
184 struct FrameListData *p = list;
193 static av_cold int codecctl_int(AVCodecContext *avctx,
194 enum vp8e_enc_control_id id, int val)
196 VP8Context *ctx = avctx->priv_data;
201 snprintf(buf, sizeof(buf), "%s:", ctlidstr[id]);
202 av_log(avctx, AV_LOG_DEBUG, " %*s%d\n", width, buf, val);
204 res = vpx_codec_control(&ctx->encoder, id, val);
205 if (res != VPX_CODEC_OK) {
206 snprintf(buf, sizeof(buf), "Failed to set %s codec control",
208 log_encoder_error(avctx, buf);
211 return res == VPX_CODEC_OK ? 0 : AVERROR(EINVAL);
214 static av_cold int vp8_free(AVCodecContext *avctx)
216 VP8Context *ctx = avctx->priv_data;
218 vpx_codec_destroy(&ctx->encoder);
219 av_freep(&ctx->twopass_stats.buf);
220 av_freep(&avctx->coded_frame);
221 av_freep(&avctx->stats_out);
222 free_frame_list(ctx->coded_frame_list);
226 static av_cold int vp8_init(AVCodecContext *avctx)
228 VP8Context *ctx = avctx->priv_data;
229 const struct vpx_codec_iface *iface = &vpx_codec_vp8_cx_algo;
230 struct vpx_codec_enc_cfg enccfg;
233 av_log(avctx, AV_LOG_INFO, "%s\n", vpx_codec_version_str());
234 av_log(avctx, AV_LOG_VERBOSE, "%s\n", vpx_codec_build_config());
236 if ((res = vpx_codec_enc_config_default(iface, &enccfg, 0)) != VPX_CODEC_OK) {
237 av_log(avctx, AV_LOG_ERROR, "Failed to get config: %s\n",
238 vpx_codec_err_to_string(res));
239 return AVERROR(EINVAL);
241 dump_enc_cfg(avctx, &enccfg);
243 enccfg.g_w = avctx->width;
244 enccfg.g_h = avctx->height;
245 enccfg.g_timebase.num = avctx->time_base.num;
246 enccfg.g_timebase.den = avctx->time_base.den;
247 enccfg.g_threads = avctx->thread_count;
248 enccfg.g_lag_in_frames= ctx->lag_in_frames;
250 if (avctx->flags & CODEC_FLAG_PASS1)
251 enccfg.g_pass = VPX_RC_FIRST_PASS;
252 else if (avctx->flags & CODEC_FLAG_PASS2)
253 enccfg.g_pass = VPX_RC_LAST_PASS;
255 enccfg.g_pass = VPX_RC_ONE_PASS;
257 if (avctx->rc_min_rate == avctx->rc_max_rate &&
258 avctx->rc_min_rate == avctx->bit_rate)
259 enccfg.rc_end_usage = VPX_CBR;
261 enccfg.rc_end_usage = VPX_CQ;
262 enccfg.rc_target_bitrate = av_rescale_rnd(avctx->bit_rate, 1, 1000,
265 enccfg.rc_min_quantizer = avctx->qmin;
267 enccfg.rc_max_quantizer = avctx->qmax;
268 enccfg.rc_dropframe_thresh = avctx->frame_skip_threshold;
270 //0-100 (0 => CBR, 100 => VBR)
271 enccfg.rc_2pass_vbr_bias_pct = round(avctx->qcompress * 100);
272 enccfg.rc_2pass_vbr_minsection_pct =
273 avctx->rc_min_rate * 100LL / avctx->bit_rate;
274 if (avctx->rc_max_rate)
275 enccfg.rc_2pass_vbr_maxsection_pct =
276 avctx->rc_max_rate * 100LL / avctx->bit_rate;
278 if (avctx->rc_buffer_size)
280 avctx->rc_buffer_size * 1000LL / avctx->bit_rate;
281 if (avctx->rc_initial_buffer_occupancy)
282 enccfg.rc_buf_initial_sz =
283 avctx->rc_initial_buffer_occupancy * 1000LL / avctx->bit_rate;
284 enccfg.rc_buf_optimal_sz = enccfg.rc_buf_sz * 5 / 6;
285 enccfg.rc_undershoot_pct = round(avctx->rc_buffer_aggressivity * 100);
287 //_enc_init() will balk if kf_min_dist differs from max w/VPX_KF_AUTO
288 if (avctx->keyint_min >= 0 && avctx->keyint_min == avctx->gop_size)
289 enccfg.kf_min_dist = avctx->keyint_min;
290 if (avctx->gop_size >= 0)
291 enccfg.kf_max_dist = avctx->gop_size;
293 if (enccfg.g_pass == VPX_RC_FIRST_PASS)
294 enccfg.g_lag_in_frames = 0;
295 else if (enccfg.g_pass == VPX_RC_LAST_PASS) {
298 if (!avctx->stats_in) {
299 av_log(avctx, AV_LOG_ERROR, "No stats file for second pass\n");
300 return AVERROR_INVALIDDATA;
303 ctx->twopass_stats.sz = strlen(avctx->stats_in) * 3 / 4;
304 ctx->twopass_stats.buf = av_malloc(ctx->twopass_stats.sz);
305 if (!ctx->twopass_stats.buf) {
306 av_log(avctx, AV_LOG_ERROR,
307 "Stat buffer alloc (%zu bytes) failed\n",
308 ctx->twopass_stats.sz);
309 return AVERROR(ENOMEM);
311 decode_size = av_base64_decode(ctx->twopass_stats.buf, avctx->stats_in,
312 ctx->twopass_stats.sz);
313 if (decode_size < 0) {
314 av_log(avctx, AV_LOG_ERROR, "Stat buffer decode failed\n");
315 return AVERROR_INVALIDDATA;
318 ctx->twopass_stats.sz = decode_size;
319 enccfg.rc_twopass_stats_in = ctx->twopass_stats;
322 /* 0-3: For non-zero values the encoder increasingly optimizes for reduced
323 complexity playback on low powered devices at the expense of encode
325 if (avctx->profile != FF_PROFILE_UNKNOWN)
326 enccfg.g_profile = avctx->profile;
328 enccfg.g_error_resilient = ctx->error_resilient || ctx->flags & VP8F_ERROR_RESILIENT;
330 dump_enc_cfg(avctx, &enccfg);
331 /* Construct Encoder Context */
332 res = vpx_codec_enc_init(&ctx->encoder, iface, &enccfg, 0);
333 if (res != VPX_CODEC_OK) {
334 log_encoder_error(avctx, "Failed to initialize encoder");
335 return AVERROR(EINVAL);
338 //codec control failures are currently treated only as warnings
339 av_log(avctx, AV_LOG_DEBUG, "vpx_codec_control\n");
340 if (ctx->cpu_used != INT_MIN)
341 codecctl_int(avctx, VP8E_SET_CPUUSED, ctx->cpu_used);
342 if (ctx->flags & VP8F_AUTO_ALT_REF)
343 ctx->auto_alt_ref = 1;
344 if (ctx->auto_alt_ref >= 0)
345 codecctl_int(avctx, VP8E_SET_ENABLEAUTOALTREF, ctx->auto_alt_ref);
346 if (ctx->arnr_max_frames >= 0)
347 codecctl_int(avctx, VP8E_SET_ARNR_MAXFRAMES, ctx->arnr_max_frames);
348 if (ctx->arnr_strength >= 0)
349 codecctl_int(avctx, VP8E_SET_ARNR_STRENGTH, ctx->arnr_strength);
350 if (ctx->arnr_type >= 0)
351 codecctl_int(avctx, VP8E_SET_ARNR_TYPE, ctx->arnr_type);
352 codecctl_int(avctx, VP8E_SET_NOISE_SENSITIVITY, avctx->noise_reduction);
353 codecctl_int(avctx, VP8E_SET_TOKEN_PARTITIONS, av_log2(avctx->slices));
354 codecctl_int(avctx, VP8E_SET_STATIC_THRESHOLD, avctx->mb_threshold);
355 codecctl_int(avctx, VP8E_SET_CQ_LEVEL, ctx->crf);
357 av_log(avctx, AV_LOG_DEBUG, "Using deadline: %d\n", ctx->deadline);
359 //provide dummy value to initialize wrapper, values will be updated each _encode()
360 vpx_img_wrap(&ctx->rawimg, VPX_IMG_FMT_I420, avctx->width, avctx->height, 1,
363 avctx->coded_frame = avcodec_alloc_frame();
364 if (!avctx->coded_frame) {
365 av_log(avctx, AV_LOG_ERROR, "Error allocating coded frame\n");
367 return AVERROR(ENOMEM);
372 static inline void cx_pktcpy(struct FrameListData *dst,
373 const struct vpx_codec_cx_pkt *src)
375 dst->pts = src->data.frame.pts;
376 dst->duration = src->data.frame.duration;
377 dst->flags = src->data.frame.flags;
378 dst->sz = src->data.frame.sz;
379 dst->buf = src->data.frame.buf;
383 * Store coded frame information in format suitable for return from encode2().
385 * Write information from @a cx_frame to @a pkt
386 * @return packet data size on success
387 * @return a negative AVERROR on error
389 static int storeframe(AVCodecContext *avctx, struct FrameListData *cx_frame,
390 AVPacket *pkt, AVFrame *coded_frame)
392 int ret = ff_alloc_packet2(avctx, pkt, cx_frame->sz);
394 memcpy(pkt->data, cx_frame->buf, pkt->size);
395 pkt->pts = pkt->dts = cx_frame->pts;
396 coded_frame->pts = cx_frame->pts;
397 coded_frame->key_frame = !!(cx_frame->flags & VPX_FRAME_IS_KEY);
399 if (coded_frame->key_frame) {
400 coded_frame->pict_type = AV_PICTURE_TYPE_I;
401 pkt->flags |= AV_PKT_FLAG_KEY;
403 coded_frame->pict_type = AV_PICTURE_TYPE_P;
411 * Queue multiple output frames from the encoder, returning the front-most.
412 * In cases where vpx_codec_get_cx_data() returns more than 1 frame append
413 * the frame queue. Return the head frame if available.
414 * @return Stored frame size
415 * @return AVERROR(EINVAL) on output size error
416 * @return AVERROR(ENOMEM) on coded frame queue data allocation error
418 static int queue_frames(AVCodecContext *avctx, AVPacket *pkt_out,
419 AVFrame *coded_frame)
421 VP8Context *ctx = avctx->priv_data;
422 const struct vpx_codec_cx_pkt *pkt;
423 const void *iter = NULL;
426 if (ctx->coded_frame_list) {
427 struct FrameListData *cx_frame = ctx->coded_frame_list;
428 /* return the leading frame if we've already begun queueing */
429 size = storeframe(avctx, cx_frame, pkt_out, coded_frame);
432 ctx->coded_frame_list = cx_frame->next;
433 free_coded_frame(cx_frame);
436 /* consume all available output from the encoder before returning. buffers
437 are only good through the next vpx_codec call */
438 while ((pkt = vpx_codec_get_cx_data(&ctx->encoder, &iter))) {
440 case VPX_CODEC_CX_FRAME_PKT:
442 struct FrameListData cx_frame;
444 /* avoid storing the frame when the list is empty and we haven't yet
445 provided a frame for output */
446 assert(!ctx->coded_frame_list);
447 cx_pktcpy(&cx_frame, pkt);
448 size = storeframe(avctx, &cx_frame, pkt_out, coded_frame);
452 struct FrameListData *cx_frame =
453 av_malloc(sizeof(struct FrameListData));
456 av_log(avctx, AV_LOG_ERROR,
457 "Frame queue element alloc failed\n");
458 return AVERROR(ENOMEM);
460 cx_pktcpy(cx_frame, pkt);
461 cx_frame->buf = av_malloc(cx_frame->sz);
463 if (!cx_frame->buf) {
464 av_log(avctx, AV_LOG_ERROR,
465 "Data buffer alloc (%zu bytes) failed\n",
467 return AVERROR(ENOMEM);
469 memcpy(cx_frame->buf, pkt->data.frame.buf, pkt->data.frame.sz);
470 coded_frame_add(&ctx->coded_frame_list, cx_frame);
473 case VPX_CODEC_STATS_PKT: {
474 struct vpx_fixed_buf *stats = &ctx->twopass_stats;
475 stats->buf = av_realloc_f(stats->buf, 1,
476 stats->sz + pkt->data.twopass_stats.sz);
478 av_log(avctx, AV_LOG_ERROR, "Stat buffer realloc failed\n");
479 return AVERROR(ENOMEM);
481 memcpy((uint8_t*)stats->buf + stats->sz,
482 pkt->data.twopass_stats.buf, pkt->data.twopass_stats.sz);
483 stats->sz += pkt->data.twopass_stats.sz;
486 case VPX_CODEC_PSNR_PKT: //FIXME add support for CODEC_FLAG_PSNR
487 case VPX_CODEC_CUSTOM_PKT:
488 //ignore unsupported/unrecognized packet types
496 static int vp8_encode(AVCodecContext *avctx, AVPacket *pkt,
497 const AVFrame *frame, int *got_packet)
499 VP8Context *ctx = avctx->priv_data;
500 struct vpx_image *rawimg = NULL;
501 int64_t timestamp = 0;
505 rawimg = &ctx->rawimg;
506 rawimg->planes[VPX_PLANE_Y] = frame->data[0];
507 rawimg->planes[VPX_PLANE_U] = frame->data[1];
508 rawimg->planes[VPX_PLANE_V] = frame->data[2];
509 rawimg->stride[VPX_PLANE_Y] = frame->linesize[0];
510 rawimg->stride[VPX_PLANE_U] = frame->linesize[1];
511 rawimg->stride[VPX_PLANE_V] = frame->linesize[2];
512 timestamp = frame->pts;
515 res = vpx_codec_encode(&ctx->encoder, rawimg, timestamp,
516 avctx->ticks_per_frame, 0, ctx->deadline);
517 if (res != VPX_CODEC_OK) {
518 log_encoder_error(avctx, "Error encoding frame");
519 return AVERROR_INVALIDDATA;
521 coded_size = queue_frames(avctx, pkt, avctx->coded_frame);
523 if (!frame && avctx->flags & CODEC_FLAG_PASS1) {
524 unsigned int b64_size = AV_BASE64_SIZE(ctx->twopass_stats.sz);
526 avctx->stats_out = av_malloc(b64_size);
527 if (!avctx->stats_out) {
528 av_log(avctx, AV_LOG_ERROR, "Stat buffer alloc (%d bytes) failed\n",
530 return AVERROR(ENOMEM);
532 av_base64_encode(avctx->stats_out, b64_size, ctx->twopass_stats.buf,
533 ctx->twopass_stats.sz);
536 *got_packet = !!coded_size;
540 #define OFFSET(x) offsetof(VP8Context, x)
541 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
542 static const AVOption options[] = {
543 { "cpu-used", "Quality/Speed ratio modifier", OFFSET(cpu_used), AV_OPT_TYPE_INT, {INT_MIN}, INT_MIN, INT_MAX, VE},
544 { "auto-alt-ref", "Enable use of alternate reference "
545 "frames (2-pass only)", OFFSET(auto_alt_ref), AV_OPT_TYPE_INT, {-1}, -1, 1, VE},
546 { "lag-in-frames", "Number of frames to look ahead for "
547 "alternate reference frame selection", OFFSET(lag_in_frames), AV_OPT_TYPE_INT, {-1}, -1, INT_MAX, VE},
548 { "arnr-maxframes", "altref noise reduction max frame count", OFFSET(arnr_max_frames), AV_OPT_TYPE_INT, {-1}, -1, INT_MAX, VE},
549 { "arnr-strength", "altref noise reduction filter strength", OFFSET(arnr_strength), AV_OPT_TYPE_INT, {-1}, -1, INT_MAX, VE},
550 { "arnr-type", "altref noise reduction filter type", OFFSET(arnr_type), AV_OPT_TYPE_INT, {-1}, -1, INT_MAX, VE, "arnr_type"},
551 { "backward", NULL, 0, AV_OPT_TYPE_CONST, {1}, 0, 0, VE, "arnr_type" },
552 { "forward", NULL, 0, AV_OPT_TYPE_CONST, {2}, 0, 0, VE, "arnr_type" },
553 { "centered", NULL, 0, AV_OPT_TYPE_CONST, {3}, 0, 0, VE, "arnr_type" },
554 { "deadline", "Time to spend encoding, in microseconds.", OFFSET(deadline), AV_OPT_TYPE_INT, {VPX_DL_GOOD_QUALITY}, INT_MIN, INT_MAX, VE, "quality"},
555 { "best", NULL, 0, AV_OPT_TYPE_CONST, {VPX_DL_BEST_QUALITY}, 0, 0, VE, "quality"},
556 { "good", NULL, 0, AV_OPT_TYPE_CONST, {VPX_DL_GOOD_QUALITY}, 0, 0, VE, "quality"},
557 { "realtime", NULL, 0, AV_OPT_TYPE_CONST, {VPX_DL_REALTIME}, 0, 0, VE, "quality"},
558 { "error-resilient", "Error resilience configuration", OFFSET(error_resilient), AV_OPT_TYPE_FLAGS, {0}, INT_MIN, INT_MAX, VE, "er"},
559 #ifdef VPX_ERROR_RESILIENT_DEFAULT
560 { "default", "Improve resiliency against losses of whole frames", 0, AV_OPT_TYPE_CONST, {VPX_ERROR_RESILIENT_DEFAULT}, 0, 0, VE, "er"},
561 { "partitions", "The frame partitions are independently decodable "
562 "by the bool decoder, meaning that partitions can be decoded even "
563 "though earlier partitions have been lost. Note that intra predicition"
564 " is still done over the partition boundary.", 0, AV_OPT_TYPE_CONST, {VPX_ERROR_RESILIENT_PARTITIONS}, 0, 0, VE, "er"},
566 {"speed", "", offsetof(VP8Context, cpu_used), AV_OPT_TYPE_INT, {.dbl = 3}, -16, 16, VE},
567 {"quality", "", offsetof(VP8Context, deadline), AV_OPT_TYPE_INT, {.dbl = VPX_DL_GOOD_QUALITY}, INT_MIN, INT_MAX, VE, "quality"},
568 {"vp8flags", "", offsetof(VP8Context, flags), FF_OPT_TYPE_FLAGS, {.dbl = 0}, 0, UINT_MAX, VE, "flags"},
569 {"error_resilient", "enable error resilience", 0, FF_OPT_TYPE_CONST, {.dbl = VP8F_ERROR_RESILIENT}, INT_MIN, INT_MAX, VE, "flags"},
570 {"altref", "enable use of alternate reference frames (VP8/2-pass only)", 0, FF_OPT_TYPE_CONST, {.dbl = VP8F_AUTO_ALT_REF}, INT_MIN, INT_MAX, VE, "flags"},
571 {"arnr_max_frames", "altref noise reduction max frame count", offsetof(VP8Context, arnr_max_frames), AV_OPT_TYPE_INT, {.dbl = 0}, 0, 15, VE},
572 {"arnr_strength", "altref noise reduction filter strength", offsetof(VP8Context, arnr_strength), AV_OPT_TYPE_INT, {.dbl = 3}, 0, 6, VE},
573 {"arnr_type", "altref noise reduction filter type", offsetof(VP8Context, arnr_type), AV_OPT_TYPE_INT, {.dbl = 3}, 1, 3, VE},
574 {"rc_lookahead", "Number of frames to look ahead for alternate reference frame selection", offsetof(VP8Context, lag_in_frames), AV_OPT_TYPE_INT, {.dbl = 25}, 0, 25, VE},
575 {"crf", "Select the quality for constant quality mode", offsetof(VP8Context, crf), AV_OPT_TYPE_INT, {.dbl = 0}, 0, 63, VE},
579 static const AVClass class = {
580 .class_name = "libvpx encoder",
581 .item_name = av_default_item_name,
583 .version = LIBAVUTIL_VERSION_INT,
586 static const AVCodecDefault defaults[] = {
590 { "keyint_min", "-1" },
594 AVCodec ff_libvpx_encoder = {
596 .type = AVMEDIA_TYPE_VIDEO,
598 .priv_data_size = sizeof(VP8Context),
600 .encode2 = vp8_encode,
602 .capabilities = CODEC_CAP_DELAY | CODEC_CAP_AUTO_THREADS,
603 .pix_fmts = (const enum PixelFormat[]){ PIX_FMT_YUV420P, PIX_FMT_NONE },
604 .long_name = NULL_IF_CONFIG_SMALL("libvpx VP8"),
605 .priv_class = &class,
606 .defaults = defaults,