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
80 /** String mappings for enum vp8e_enc_control_id */
81 static const char *const ctlidstr[] = {
82 [VP8E_UPD_ENTROPY] = "VP8E_UPD_ENTROPY",
83 [VP8E_UPD_REFERENCE] = "VP8E_UPD_REFERENCE",
84 [VP8E_USE_REFERENCE] = "VP8E_USE_REFERENCE",
85 [VP8E_SET_ROI_MAP] = "VP8E_SET_ROI_MAP",
86 [VP8E_SET_ACTIVEMAP] = "VP8E_SET_ACTIVEMAP",
87 [VP8E_SET_SCALEMODE] = "VP8E_SET_SCALEMODE",
88 [VP8E_SET_CPUUSED] = "VP8E_SET_CPUUSED",
89 [VP8E_SET_ENABLEAUTOALTREF] = "VP8E_SET_ENABLEAUTOALTREF",
90 [VP8E_SET_NOISE_SENSITIVITY] = "VP8E_SET_NOISE_SENSITIVITY",
91 [VP8E_SET_SHARPNESS] = "VP8E_SET_SHARPNESS",
92 [VP8E_SET_STATIC_THRESHOLD] = "VP8E_SET_STATIC_THRESHOLD",
93 [VP8E_SET_TOKEN_PARTITIONS] = "VP8E_SET_TOKEN_PARTITIONS",
94 [VP8E_GET_LAST_QUANTIZER] = "VP8E_GET_LAST_QUANTIZER",
95 [VP8E_SET_ARNR_MAXFRAMES] = "VP8E_SET_ARNR_MAXFRAMES",
96 [VP8E_SET_ARNR_STRENGTH] = "VP8E_SET_ARNR_STRENGTH",
97 [VP8E_SET_ARNR_TYPE] = "VP8E_SET_ARNR_TYPE",
98 [VP8E_SET_CQ_LEVEL] = "VP8E_SET_CQ_LEVEL",
99 [VP8E_SET_MAX_INTRA_BITRATE_PCT] = "VP8E_SET_MAX_INTRA_BITRATE_PCT",
102 static av_cold void log_encoder_error(AVCodecContext *avctx, const char *desc)
104 VP8Context *ctx = avctx->priv_data;
105 const char *error = vpx_codec_error(&ctx->encoder);
106 const char *detail = vpx_codec_error_detail(&ctx->encoder);
108 av_log(avctx, AV_LOG_ERROR, "%s: %s\n", desc, error);
110 av_log(avctx, AV_LOG_ERROR, " Additional information: %s\n", detail);
113 static av_cold void dump_enc_cfg(AVCodecContext *avctx,
114 const struct vpx_codec_enc_cfg *cfg)
117 int level = AV_LOG_DEBUG;
119 av_log(avctx, level, "vpx_codec_enc_cfg\n");
120 av_log(avctx, level, "generic settings\n"
121 " %*s%u\n %*s%u\n %*s%u\n %*s%u\n %*s%u\n"
122 " %*s{%u/%u}\n %*s%u\n %*s%d\n %*s%u\n",
123 width, "g_usage:", cfg->g_usage,
124 width, "g_threads:", cfg->g_threads,
125 width, "g_profile:", cfg->g_profile,
126 width, "g_w:", cfg->g_w,
127 width, "g_h:", cfg->g_h,
128 width, "g_timebase:", cfg->g_timebase.num, cfg->g_timebase.den,
129 width, "g_error_resilient:", cfg->g_error_resilient,
130 width, "g_pass:", cfg->g_pass,
131 width, "g_lag_in_frames:", cfg->g_lag_in_frames);
132 av_log(avctx, level, "rate control settings\n"
133 " %*s%u\n %*s%u\n %*s%u\n %*s%u\n"
134 " %*s%d\n %*s%p(%zu)\n %*s%u\n",
135 width, "rc_dropframe_thresh:", cfg->rc_dropframe_thresh,
136 width, "rc_resize_allowed:", cfg->rc_resize_allowed,
137 width, "rc_resize_up_thresh:", cfg->rc_resize_up_thresh,
138 width, "rc_resize_down_thresh:", cfg->rc_resize_down_thresh,
139 width, "rc_end_usage:", cfg->rc_end_usage,
140 width, "rc_twopass_stats_in:", cfg->rc_twopass_stats_in.buf, cfg->rc_twopass_stats_in.sz,
141 width, "rc_target_bitrate:", cfg->rc_target_bitrate);
142 av_log(avctx, level, "quantizer settings\n"
144 width, "rc_min_quantizer:", cfg->rc_min_quantizer,
145 width, "rc_max_quantizer:", cfg->rc_max_quantizer);
146 av_log(avctx, level, "bitrate tolerance\n"
148 width, "rc_undershoot_pct:", cfg->rc_undershoot_pct,
149 width, "rc_overshoot_pct:", cfg->rc_overshoot_pct);
150 av_log(avctx, level, "decoder buffer model\n"
151 " %*s%u\n %*s%u\n %*s%u\n",
152 width, "rc_buf_sz:", cfg->rc_buf_sz,
153 width, "rc_buf_initial_sz:", cfg->rc_buf_initial_sz,
154 width, "rc_buf_optimal_sz:", cfg->rc_buf_optimal_sz);
155 av_log(avctx, level, "2 pass rate control settings\n"
156 " %*s%u\n %*s%u\n %*s%u\n",
157 width, "rc_2pass_vbr_bias_pct:", cfg->rc_2pass_vbr_bias_pct,
158 width, "rc_2pass_vbr_minsection_pct:", cfg->rc_2pass_vbr_minsection_pct,
159 width, "rc_2pass_vbr_maxsection_pct:", cfg->rc_2pass_vbr_maxsection_pct);
160 av_log(avctx, level, "keyframing settings\n"
161 " %*s%d\n %*s%u\n %*s%u\n",
162 width, "kf_mode:", cfg->kf_mode,
163 width, "kf_min_dist:", cfg->kf_min_dist,
164 width, "kf_max_dist:", cfg->kf_max_dist);
165 av_log(avctx, level, "\n");
168 static void coded_frame_add(void *list, struct FrameListData *cx_frame)
170 struct FrameListData **p = list;
175 cx_frame->next = NULL;
178 static av_cold void free_coded_frame(struct FrameListData *cx_frame)
180 av_freep(&cx_frame->buf);
184 static av_cold void free_frame_list(struct FrameListData *list)
186 struct FrameListData *p = list;
195 static av_cold int codecctl_int(AVCodecContext *avctx,
196 enum vp8e_enc_control_id id, int val)
198 VP8Context *ctx = avctx->priv_data;
203 snprintf(buf, sizeof(buf), "%s:", ctlidstr[id]);
204 av_log(avctx, AV_LOG_DEBUG, " %*s%d\n", width, buf, val);
206 res = vpx_codec_control(&ctx->encoder, id, val);
207 if (res != VPX_CODEC_OK) {
208 snprintf(buf, sizeof(buf), "Failed to set %s codec control",
210 log_encoder_error(avctx, buf);
213 return res == VPX_CODEC_OK ? 0 : AVERROR(EINVAL);
216 static av_cold int vp8_free(AVCodecContext *avctx)
218 VP8Context *ctx = avctx->priv_data;
220 vpx_codec_destroy(&ctx->encoder);
221 av_freep(&ctx->twopass_stats.buf);
222 av_freep(&avctx->coded_frame);
223 av_freep(&avctx->stats_out);
224 free_frame_list(ctx->coded_frame_list);
228 static av_cold int vp8_init(AVCodecContext *avctx)
230 VP8Context *ctx = avctx->priv_data;
231 const struct vpx_codec_iface *iface = &vpx_codec_vp8_cx_algo;
232 struct vpx_codec_enc_cfg enccfg;
235 av_log(avctx, AV_LOG_INFO, "%s\n", vpx_codec_version_str());
236 av_log(avctx, AV_LOG_VERBOSE, "%s\n", vpx_codec_build_config());
238 if ((res = vpx_codec_enc_config_default(iface, &enccfg, 0)) != VPX_CODEC_OK) {
239 av_log(avctx, AV_LOG_ERROR, "Failed to get config: %s\n",
240 vpx_codec_err_to_string(res));
241 return AVERROR(EINVAL);
243 dump_enc_cfg(avctx, &enccfg);
245 enccfg.g_w = avctx->width;
246 enccfg.g_h = avctx->height;
247 enccfg.g_timebase.num = avctx->time_base.num;
248 enccfg.g_timebase.den = avctx->time_base.den;
249 enccfg.g_threads = avctx->thread_count;
250 enccfg.g_lag_in_frames= ctx->lag_in_frames;
252 if (avctx->flags & CODEC_FLAG_PASS1)
253 enccfg.g_pass = VPX_RC_FIRST_PASS;
254 else if (avctx->flags & CODEC_FLAG_PASS2)
255 enccfg.g_pass = VPX_RC_LAST_PASS;
257 enccfg.g_pass = VPX_RC_ONE_PASS;
259 if (avctx->rc_min_rate == avctx->rc_max_rate &&
260 avctx->rc_min_rate == avctx->bit_rate)
261 enccfg.rc_end_usage = VPX_CBR;
263 enccfg.rc_end_usage = VPX_CQ;
264 enccfg.rc_target_bitrate = av_rescale_rnd(avctx->bit_rate, 1, 1000,
267 enccfg.rc_min_quantizer = avctx->qmin;
269 enccfg.rc_max_quantizer = avctx->qmax;
270 enccfg.rc_dropframe_thresh = avctx->frame_skip_threshold;
272 //0-100 (0 => CBR, 100 => VBR)
273 enccfg.rc_2pass_vbr_bias_pct = round(avctx->qcompress * 100);
274 enccfg.rc_2pass_vbr_minsection_pct =
275 avctx->rc_min_rate * 100LL / avctx->bit_rate;
276 if (avctx->rc_max_rate)
277 enccfg.rc_2pass_vbr_maxsection_pct =
278 avctx->rc_max_rate * 100LL / avctx->bit_rate;
280 if (avctx->rc_buffer_size)
282 avctx->rc_buffer_size * 1000LL / avctx->bit_rate;
283 if (avctx->rc_initial_buffer_occupancy)
284 enccfg.rc_buf_initial_sz =
285 avctx->rc_initial_buffer_occupancy * 1000LL / avctx->bit_rate;
286 enccfg.rc_buf_optimal_sz = enccfg.rc_buf_sz * 5 / 6;
287 enccfg.rc_undershoot_pct = round(avctx->rc_buffer_aggressivity * 100);
289 //_enc_init() will balk if kf_min_dist differs from max w/VPX_KF_AUTO
290 if (avctx->keyint_min >= 0 && avctx->keyint_min == avctx->gop_size)
291 enccfg.kf_min_dist = avctx->keyint_min;
292 if (avctx->gop_size >= 0)
293 enccfg.kf_max_dist = avctx->gop_size;
295 if (enccfg.g_pass == VPX_RC_FIRST_PASS)
296 enccfg.g_lag_in_frames = 0;
297 else if (enccfg.g_pass == VPX_RC_LAST_PASS) {
300 if (!avctx->stats_in) {
301 av_log(avctx, AV_LOG_ERROR, "No stats file for second pass\n");
302 return AVERROR_INVALIDDATA;
305 ctx->twopass_stats.sz = strlen(avctx->stats_in) * 3 / 4;
306 ctx->twopass_stats.buf = av_malloc(ctx->twopass_stats.sz);
307 if (!ctx->twopass_stats.buf) {
308 av_log(avctx, AV_LOG_ERROR,
309 "Stat buffer alloc (%zu bytes) failed\n",
310 ctx->twopass_stats.sz);
311 return AVERROR(ENOMEM);
313 decode_size = av_base64_decode(ctx->twopass_stats.buf, avctx->stats_in,
314 ctx->twopass_stats.sz);
315 if (decode_size < 0) {
316 av_log(avctx, AV_LOG_ERROR, "Stat buffer decode failed\n");
317 return AVERROR_INVALIDDATA;
320 ctx->twopass_stats.sz = decode_size;
321 enccfg.rc_twopass_stats_in = ctx->twopass_stats;
324 /* 0-3: For non-zero values the encoder increasingly optimizes for reduced
325 complexity playback on low powered devices at the expense of encode
327 if (avctx->profile != FF_PROFILE_UNKNOWN)
328 enccfg.g_profile = avctx->profile;
330 enccfg.g_error_resilient = ctx->error_resilient || ctx->flags & VP8F_ERROR_RESILIENT;
332 dump_enc_cfg(avctx, &enccfg);
333 /* Construct Encoder Context */
334 res = vpx_codec_enc_init(&ctx->encoder, iface, &enccfg, 0);
335 if (res != VPX_CODEC_OK) {
336 log_encoder_error(avctx, "Failed to initialize encoder");
337 return AVERROR(EINVAL);
340 //codec control failures are currently treated only as warnings
341 av_log(avctx, AV_LOG_DEBUG, "vpx_codec_control\n");
342 if (ctx->cpu_used != INT_MIN)
343 codecctl_int(avctx, VP8E_SET_CPUUSED, ctx->cpu_used);
344 if (ctx->flags & VP8F_AUTO_ALT_REF)
345 ctx->auto_alt_ref = 1;
346 if (ctx->auto_alt_ref >= 0)
347 codecctl_int(avctx, VP8E_SET_ENABLEAUTOALTREF, ctx->auto_alt_ref);
348 if (ctx->arnr_max_frames >= 0)
349 codecctl_int(avctx, VP8E_SET_ARNR_MAXFRAMES, ctx->arnr_max_frames);
350 if (ctx->arnr_strength >= 0)
351 codecctl_int(avctx, VP8E_SET_ARNR_STRENGTH, ctx->arnr_strength);
352 if (ctx->arnr_type >= 0)
353 codecctl_int(avctx, VP8E_SET_ARNR_TYPE, ctx->arnr_type);
354 codecctl_int(avctx, VP8E_SET_NOISE_SENSITIVITY, avctx->noise_reduction);
355 codecctl_int(avctx, VP8E_SET_TOKEN_PARTITIONS, av_log2(avctx->slices));
356 codecctl_int(avctx, VP8E_SET_STATIC_THRESHOLD, avctx->mb_threshold);
357 codecctl_int(avctx, VP8E_SET_CQ_LEVEL, ctx->crf);
358 if (ctx->max_intra_rate >= 0)
359 codecctl_int(avctx, VP8E_SET_MAX_INTRA_BITRATE_PCT, ctx->max_intra_rate);
361 av_log(avctx, AV_LOG_DEBUG, "Using deadline: %d\n", ctx->deadline);
363 //provide dummy value to initialize wrapper, values will be updated each _encode()
364 vpx_img_wrap(&ctx->rawimg, VPX_IMG_FMT_I420, avctx->width, avctx->height, 1,
367 avctx->coded_frame = avcodec_alloc_frame();
368 if (!avctx->coded_frame) {
369 av_log(avctx, AV_LOG_ERROR, "Error allocating coded frame\n");
371 return AVERROR(ENOMEM);
376 static inline void cx_pktcpy(struct FrameListData *dst,
377 const struct vpx_codec_cx_pkt *src)
379 dst->pts = src->data.frame.pts;
380 dst->duration = src->data.frame.duration;
381 dst->flags = src->data.frame.flags;
382 dst->sz = src->data.frame.sz;
383 dst->buf = src->data.frame.buf;
387 * Store coded frame information in format suitable for return from encode2().
389 * Write information from @a cx_frame to @a pkt
390 * @return packet data size on success
391 * @return a negative AVERROR on error
393 static int storeframe(AVCodecContext *avctx, struct FrameListData *cx_frame,
394 AVPacket *pkt, AVFrame *coded_frame)
396 int ret = ff_alloc_packet2(avctx, pkt, cx_frame->sz);
398 memcpy(pkt->data, cx_frame->buf, pkt->size);
399 pkt->pts = pkt->dts = cx_frame->pts;
400 coded_frame->pts = cx_frame->pts;
401 coded_frame->key_frame = !!(cx_frame->flags & VPX_FRAME_IS_KEY);
403 if (coded_frame->key_frame) {
404 coded_frame->pict_type = AV_PICTURE_TYPE_I;
405 pkt->flags |= AV_PKT_FLAG_KEY;
407 coded_frame->pict_type = AV_PICTURE_TYPE_P;
415 * Queue multiple output frames from the encoder, returning the front-most.
416 * In cases where vpx_codec_get_cx_data() returns more than 1 frame append
417 * the frame queue. Return the head frame if available.
418 * @return Stored frame size
419 * @return AVERROR(EINVAL) on output size error
420 * @return AVERROR(ENOMEM) on coded frame queue data allocation error
422 static int queue_frames(AVCodecContext *avctx, AVPacket *pkt_out,
423 AVFrame *coded_frame)
425 VP8Context *ctx = avctx->priv_data;
426 const struct vpx_codec_cx_pkt *pkt;
427 const void *iter = NULL;
430 if (ctx->coded_frame_list) {
431 struct FrameListData *cx_frame = ctx->coded_frame_list;
432 /* return the leading frame if we've already begun queueing */
433 size = storeframe(avctx, cx_frame, pkt_out, coded_frame);
436 ctx->coded_frame_list = cx_frame->next;
437 free_coded_frame(cx_frame);
440 /* consume all available output from the encoder before returning. buffers
441 are only good through the next vpx_codec call */
442 while ((pkt = vpx_codec_get_cx_data(&ctx->encoder, &iter))) {
444 case VPX_CODEC_CX_FRAME_PKT:
446 struct FrameListData cx_frame;
448 /* avoid storing the frame when the list is empty and we haven't yet
449 provided a frame for output */
450 assert(!ctx->coded_frame_list);
451 cx_pktcpy(&cx_frame, pkt);
452 size = storeframe(avctx, &cx_frame, pkt_out, coded_frame);
456 struct FrameListData *cx_frame =
457 av_malloc(sizeof(struct FrameListData));
460 av_log(avctx, AV_LOG_ERROR,
461 "Frame queue element alloc failed\n");
462 return AVERROR(ENOMEM);
464 cx_pktcpy(cx_frame, pkt);
465 cx_frame->buf = av_malloc(cx_frame->sz);
467 if (!cx_frame->buf) {
468 av_log(avctx, AV_LOG_ERROR,
469 "Data buffer alloc (%zu bytes) failed\n",
471 return AVERROR(ENOMEM);
473 memcpy(cx_frame->buf, pkt->data.frame.buf, pkt->data.frame.sz);
474 coded_frame_add(&ctx->coded_frame_list, cx_frame);
477 case VPX_CODEC_STATS_PKT: {
478 struct vpx_fixed_buf *stats = &ctx->twopass_stats;
479 stats->buf = av_realloc_f(stats->buf, 1,
480 stats->sz + pkt->data.twopass_stats.sz);
482 av_log(avctx, AV_LOG_ERROR, "Stat buffer realloc failed\n");
483 return AVERROR(ENOMEM);
485 memcpy((uint8_t*)stats->buf + stats->sz,
486 pkt->data.twopass_stats.buf, pkt->data.twopass_stats.sz);
487 stats->sz += pkt->data.twopass_stats.sz;
490 case VPX_CODEC_PSNR_PKT: //FIXME add support for CODEC_FLAG_PSNR
491 case VPX_CODEC_CUSTOM_PKT:
492 //ignore unsupported/unrecognized packet types
500 static int vp8_encode(AVCodecContext *avctx, AVPacket *pkt,
501 const AVFrame *frame, int *got_packet)
503 VP8Context *ctx = avctx->priv_data;
504 struct vpx_image *rawimg = NULL;
505 int64_t timestamp = 0;
510 rawimg = &ctx->rawimg;
511 rawimg->planes[VPX_PLANE_Y] = frame->data[0];
512 rawimg->planes[VPX_PLANE_U] = frame->data[1];
513 rawimg->planes[VPX_PLANE_V] = frame->data[2];
514 rawimg->stride[VPX_PLANE_Y] = frame->linesize[0];
515 rawimg->stride[VPX_PLANE_U] = frame->linesize[1];
516 rawimg->stride[VPX_PLANE_V] = frame->linesize[2];
517 timestamp = frame->pts;
518 flags = frame->pict_type == AV_PICTURE_TYPE_I ? VPX_EFLAG_FORCE_KF : 0;
521 res = vpx_codec_encode(&ctx->encoder, rawimg, timestamp,
522 avctx->ticks_per_frame, flags, ctx->deadline);
523 if (res != VPX_CODEC_OK) {
524 log_encoder_error(avctx, "Error encoding frame");
525 return AVERROR_INVALIDDATA;
527 coded_size = queue_frames(avctx, pkt, avctx->coded_frame);
529 if (!frame && avctx->flags & CODEC_FLAG_PASS1) {
530 unsigned int b64_size = AV_BASE64_SIZE(ctx->twopass_stats.sz);
532 avctx->stats_out = av_malloc(b64_size);
533 if (!avctx->stats_out) {
534 av_log(avctx, AV_LOG_ERROR, "Stat buffer alloc (%d bytes) failed\n",
536 return AVERROR(ENOMEM);
538 av_base64_encode(avctx->stats_out, b64_size, ctx->twopass_stats.buf,
539 ctx->twopass_stats.sz);
542 *got_packet = !!coded_size;
546 #define OFFSET(x) offsetof(VP8Context, x)
547 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
548 static const AVOption options[] = {
549 { "cpu-used", "Quality/Speed ratio modifier", OFFSET(cpu_used), AV_OPT_TYPE_INT, {INT_MIN}, INT_MIN, INT_MAX, VE},
550 { "auto-alt-ref", "Enable use of alternate reference "
551 "frames (2-pass only)", OFFSET(auto_alt_ref), AV_OPT_TYPE_INT, {-1}, -1, 1, VE},
552 { "lag-in-frames", "Number of frames to look ahead for "
553 "alternate reference frame selection", OFFSET(lag_in_frames), AV_OPT_TYPE_INT, {-1}, -1, INT_MAX, VE},
554 { "arnr-maxframes", "altref noise reduction max frame count", OFFSET(arnr_max_frames), AV_OPT_TYPE_INT, {-1}, -1, INT_MAX, VE},
555 { "arnr-strength", "altref noise reduction filter strength", OFFSET(arnr_strength), AV_OPT_TYPE_INT, {-1}, -1, INT_MAX, VE},
556 { "arnr-type", "altref noise reduction filter type", OFFSET(arnr_type), AV_OPT_TYPE_INT, {-1}, -1, INT_MAX, VE, "arnr_type"},
557 { "backward", NULL, 0, AV_OPT_TYPE_CONST, {1}, 0, 0, VE, "arnr_type" },
558 { "forward", NULL, 0, AV_OPT_TYPE_CONST, {2}, 0, 0, VE, "arnr_type" },
559 { "centered", NULL, 0, AV_OPT_TYPE_CONST, {3}, 0, 0, VE, "arnr_type" },
560 { "deadline", "Time to spend encoding, in microseconds.", OFFSET(deadline), AV_OPT_TYPE_INT, {VPX_DL_GOOD_QUALITY}, INT_MIN, INT_MAX, VE, "quality"},
561 { "best", NULL, 0, AV_OPT_TYPE_CONST, {VPX_DL_BEST_QUALITY}, 0, 0, VE, "quality"},
562 { "good", NULL, 0, AV_OPT_TYPE_CONST, {VPX_DL_GOOD_QUALITY}, 0, 0, VE, "quality"},
563 { "realtime", NULL, 0, AV_OPT_TYPE_CONST, {VPX_DL_REALTIME}, 0, 0, VE, "quality"},
564 { "error-resilient", "Error resilience configuration", OFFSET(error_resilient), AV_OPT_TYPE_FLAGS, {0}, INT_MIN, INT_MAX, VE, "er"},
565 { "max-intra-rate", "Maximum I-frame bitrate (pct) 0=unlimited", OFFSET(max_intra_rate), AV_OPT_TYPE_INT, {-1}, -1, INT_MAX, VE},
566 #ifdef VPX_ERROR_RESILIENT_DEFAULT
567 { "default", "Improve resiliency against losses of whole frames", 0, AV_OPT_TYPE_CONST, {VPX_ERROR_RESILIENT_DEFAULT}, 0, 0, VE, "er"},
568 { "partitions", "The frame partitions are independently decodable "
569 "by the bool decoder, meaning that partitions can be decoded even "
570 "though earlier partitions have been lost. Note that intra predicition"
571 " is still done over the partition boundary.", 0, AV_OPT_TYPE_CONST, {VPX_ERROR_RESILIENT_PARTITIONS}, 0, 0, VE, "er"},
573 {"speed", "", offsetof(VP8Context, cpu_used), AV_OPT_TYPE_INT, {.dbl = 3}, -16, 16, VE},
574 {"quality", "", offsetof(VP8Context, deadline), AV_OPT_TYPE_INT, {.dbl = VPX_DL_GOOD_QUALITY}, INT_MIN, INT_MAX, VE, "quality"},
575 {"vp8flags", "", offsetof(VP8Context, flags), FF_OPT_TYPE_FLAGS, {.dbl = 0}, 0, UINT_MAX, VE, "flags"},
576 {"error_resilient", "enable error resilience", 0, FF_OPT_TYPE_CONST, {.dbl = VP8F_ERROR_RESILIENT}, INT_MIN, INT_MAX, VE, "flags"},
577 {"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"},
578 {"arnr_max_frames", "altref noise reduction max frame count", offsetof(VP8Context, arnr_max_frames), AV_OPT_TYPE_INT, {.dbl = 0}, 0, 15, VE},
579 {"arnr_strength", "altref noise reduction filter strength", offsetof(VP8Context, arnr_strength), AV_OPT_TYPE_INT, {.dbl = 3}, 0, 6, VE},
580 {"arnr_type", "altref noise reduction filter type", offsetof(VP8Context, arnr_type), AV_OPT_TYPE_INT, {.dbl = 3}, 1, 3, VE},
581 {"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},
582 {"crf", "Select the quality for constant quality mode", offsetof(VP8Context, crf), AV_OPT_TYPE_INT, {.dbl = 0}, 0, 63, VE},
586 static const AVClass class = {
587 .class_name = "libvpx encoder",
588 .item_name = av_default_item_name,
590 .version = LIBAVUTIL_VERSION_INT,
593 static const AVCodecDefault defaults[] = {
597 { "keyint_min", "-1" },
601 AVCodec ff_libvpx_encoder = {
603 .type = AVMEDIA_TYPE_VIDEO,
605 .priv_data_size = sizeof(VP8Context),
607 .encode2 = vp8_encode,
609 .capabilities = CODEC_CAP_DELAY | CODEC_CAP_AUTO_THREADS,
610 .pix_fmts = (const enum PixelFormat[]){ PIX_FMT_YUV420P, PIX_FMT_NONE },
611 .long_name = NULL_IF_CONFIG_SMALL("libvpx VP8"),
612 .priv_class = &class,
613 .defaults = defaults,