2 * Copyright (c) 2010, Google, Inc.
4 * This file is part of Libav.
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.
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.
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
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 unsigned long deadline; //i.e., RT/GOOD/BEST
58 struct FrameListData *coded_frame_list;
68 /** String mappings for enum vp8e_enc_control_id */
69 static 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",
88 static av_cold void log_encoder_error(AVCodecContext *avctx, const char *desc)
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);
94 av_log(avctx, AV_LOG_ERROR, "%s: %s\n", desc, error);
96 av_log(avctx, AV_LOG_ERROR, " Additional information: %s\n", detail);
99 static av_cold void dump_enc_cfg(AVCodecContext *avctx,
100 const struct vpx_codec_enc_cfg *cfg)
103 int level = AV_LOG_DEBUG;
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"
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"
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");
154 static void coded_frame_add(void *list, struct FrameListData *cx_frame)
156 struct FrameListData **p = list;
161 cx_frame->next = NULL;
164 static av_cold void free_coded_frame(struct FrameListData *cx_frame)
166 av_freep(&cx_frame->buf);
170 static av_cold void free_frame_list(struct FrameListData *list)
172 struct FrameListData *p = list;
181 static av_cold int codecctl_int(AVCodecContext *avctx,
182 enum vp8e_enc_control_id id, int val)
184 VP8Context *ctx = avctx->priv_data;
189 snprintf(buf, sizeof(buf), "%s:", ctlidstr[id]);
190 av_log(avctx, AV_LOG_DEBUG, " %*s%d\n", width, buf, val);
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",
196 log_encoder_error(avctx, buf);
199 return res == VPX_CODEC_OK ? 0 : AVERROR(EINVAL);
202 static av_cold int vp8_free(AVCodecContext *avctx)
204 VP8Context *ctx = avctx->priv_data;
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);
214 static av_cold int vp8_init(AVCodecContext *avctx)
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;
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());
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);
229 dump_enc_cfg(avctx, &enccfg);
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;
237 if (ctx->lag_in_frames >= 0)
238 enccfg.g_lag_in_frames = ctx->lag_in_frames;
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;
245 enccfg.g_pass = VPX_RC_ONE_PASS;
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,
253 enccfg.rc_min_quantizer = avctx->qmin;
254 enccfg.rc_max_quantizer = avctx->qmax;
255 enccfg.rc_dropframe_thresh = avctx->frame_skip_threshold;
257 //0-100 (0 => CBR, 100 => VBR)
258 enccfg.rc_2pass_vbr_bias_pct = round(avctx->qcompress * 100);
259 enccfg.rc_2pass_vbr_minsection_pct =
260 avctx->rc_min_rate * 100LL / avctx->bit_rate;
261 if (avctx->rc_max_rate)
262 enccfg.rc_2pass_vbr_maxsection_pct =
263 avctx->rc_max_rate * 100LL / avctx->bit_rate;
265 if (avctx->rc_buffer_size)
267 avctx->rc_buffer_size * 1000LL / avctx->bit_rate;
268 if (avctx->rc_initial_buffer_occupancy)
269 enccfg.rc_buf_initial_sz =
270 avctx->rc_initial_buffer_occupancy * 1000LL / avctx->bit_rate;
271 enccfg.rc_buf_optimal_sz = enccfg.rc_buf_sz * 5 / 6;
273 //_enc_init() will balk if kf_min_dist differs from max w/VPX_KF_AUTO
274 if (avctx->keyint_min == avctx->gop_size)
275 enccfg.kf_min_dist = avctx->keyint_min;
276 enccfg.kf_max_dist = avctx->gop_size;
278 if (enccfg.g_pass == VPX_RC_FIRST_PASS)
279 enccfg.g_lag_in_frames = 0;
280 else if (enccfg.g_pass == VPX_RC_LAST_PASS) {
283 if (!avctx->stats_in) {
284 av_log(avctx, AV_LOG_ERROR, "No stats file for second pass\n");
285 return AVERROR_INVALIDDATA;
288 ctx->twopass_stats.sz = strlen(avctx->stats_in) * 3 / 4;
289 ctx->twopass_stats.buf = av_malloc(ctx->twopass_stats.sz);
290 if (!ctx->twopass_stats.buf) {
291 av_log(avctx, AV_LOG_ERROR,
292 "Stat buffer alloc (%zu bytes) failed\n",
293 ctx->twopass_stats.sz);
294 return AVERROR(ENOMEM);
296 decode_size = av_base64_decode(ctx->twopass_stats.buf, avctx->stats_in,
297 ctx->twopass_stats.sz);
298 if (decode_size < 0) {
299 av_log(avctx, AV_LOG_ERROR, "Stat buffer decode failed\n");
300 return AVERROR_INVALIDDATA;
303 ctx->twopass_stats.sz = decode_size;
304 enccfg.rc_twopass_stats_in = ctx->twopass_stats;
307 /* 0-3: For non-zero values the encoder increasingly optimizes for reduced
308 complexity playback on low powered devices at the expense of encode
310 if (avctx->profile != FF_PROFILE_UNKNOWN)
311 enccfg.g_profile = avctx->profile;
313 enccfg.g_error_resilient = ctx->error_resilient;
315 dump_enc_cfg(avctx, &enccfg);
316 /* Construct Encoder Context */
317 res = vpx_codec_enc_init(&ctx->encoder, iface, &enccfg, 0);
318 if (res != VPX_CODEC_OK) {
319 log_encoder_error(avctx, "Failed to initialize encoder");
320 return AVERROR(EINVAL);
323 //codec control failures are currently treated only as warnings
324 av_log(avctx, AV_LOG_DEBUG, "vpx_codec_control\n");
325 if (ctx->cpu_used != INT_MIN)
326 codecctl_int(avctx, VP8E_SET_CPUUSED, ctx->cpu_used);
327 if (ctx->auto_alt_ref >= 0)
328 codecctl_int(avctx, VP8E_SET_ENABLEAUTOALTREF, ctx->auto_alt_ref);
329 if (ctx->arnr_max_frames >= 0)
330 codecctl_int(avctx, VP8E_SET_ARNR_MAXFRAMES, ctx->arnr_max_frames);
331 if (ctx->arnr_strength >= 0)
332 codecctl_int(avctx, VP8E_SET_ARNR_STRENGTH, ctx->arnr_strength);
333 if (ctx->arnr_type >= 0)
334 codecctl_int(avctx, VP8E_SET_ARNR_TYPE, ctx->arnr_type);
335 codecctl_int(avctx, VP8E_SET_NOISE_SENSITIVITY, avctx->noise_reduction);
336 codecctl_int(avctx, VP8E_SET_TOKEN_PARTITIONS, av_log2(avctx->slices));
337 codecctl_int(avctx, VP8E_SET_STATIC_THRESHOLD, avctx->mb_threshold);
339 //provide dummy value to initialize wrapper, values will be updated each _encode()
340 vpx_img_wrap(&ctx->rawimg, VPX_IMG_FMT_I420, avctx->width, avctx->height, 1,
343 avctx->coded_frame = avcodec_alloc_frame();
344 if (!avctx->coded_frame) {
345 av_log(avctx, AV_LOG_ERROR, "Error allocating coded frame\n");
347 return AVERROR(ENOMEM);
352 static inline void cx_pktcpy(struct FrameListData *dst,
353 const struct vpx_codec_cx_pkt *src)
355 dst->pts = src->data.frame.pts;
356 dst->duration = src->data.frame.duration;
357 dst->flags = src->data.frame.flags;
358 dst->sz = src->data.frame.sz;
359 dst->buf = src->data.frame.buf;
363 * Store coded frame information in format suitable for return from encode().
365 * Write buffer information from @a cx_frame to @a buf & @a buf_size.
366 * Timing/frame details to @a coded_frame.
367 * @return Frame size written to @a buf on success
368 * @return AVERROR(EINVAL) on error
370 static int storeframe(AVCodecContext *avctx, struct FrameListData *cx_frame,
371 uint8_t *buf, int buf_size, AVFrame *coded_frame)
373 if ((int) cx_frame->sz <= buf_size) {
374 buf_size = cx_frame->sz;
375 memcpy(buf, cx_frame->buf, buf_size);
376 coded_frame->pts = cx_frame->pts;
377 coded_frame->key_frame = !!(cx_frame->flags & VPX_FRAME_IS_KEY);
379 if (coded_frame->key_frame)
380 coded_frame->pict_type = AV_PICTURE_TYPE_I;
382 coded_frame->pict_type = AV_PICTURE_TYPE_P;
384 av_log(avctx, AV_LOG_ERROR,
385 "Compressed frame larger than storage provided! (%zu/%d)\n",
386 cx_frame->sz, buf_size);
387 return AVERROR(EINVAL);
393 * Queue multiple output frames from the encoder, returning the front-most.
394 * In cases where vpx_codec_get_cx_data() returns more than 1 frame append
395 * the frame queue. Return the head frame if available.
396 * @return Stored frame size
397 * @return AVERROR(EINVAL) on output size error
398 * @return AVERROR(ENOMEM) on coded frame queue data allocation error
400 static int queue_frames(AVCodecContext *avctx, uint8_t *buf, int buf_size,
401 AVFrame *coded_frame)
403 VP8Context *ctx = avctx->priv_data;
404 const struct vpx_codec_cx_pkt *pkt;
405 const void *iter = NULL;
408 if (ctx->coded_frame_list) {
409 struct FrameListData *cx_frame = ctx->coded_frame_list;
410 /* return the leading frame if we've already begun queueing */
411 size = storeframe(avctx, cx_frame, buf, buf_size, coded_frame);
413 return AVERROR(EINVAL);
414 ctx->coded_frame_list = cx_frame->next;
415 free_coded_frame(cx_frame);
418 /* consume all available output from the encoder before returning. buffers
419 are only good through the next vpx_codec call */
420 while ((pkt = vpx_codec_get_cx_data(&ctx->encoder, &iter))) {
422 case VPX_CODEC_CX_FRAME_PKT:
424 struct FrameListData cx_frame;
426 /* avoid storing the frame when the list is empty and we haven't yet
427 provided a frame for output */
428 assert(!ctx->coded_frame_list);
429 cx_pktcpy(&cx_frame, pkt);
430 size = storeframe(avctx, &cx_frame, buf, buf_size, coded_frame);
432 return AVERROR(EINVAL);
434 struct FrameListData *cx_frame =
435 av_malloc(sizeof(struct FrameListData));
438 av_log(avctx, AV_LOG_ERROR,
439 "Frame queue element alloc failed\n");
440 return AVERROR(ENOMEM);
442 cx_pktcpy(cx_frame, pkt);
443 cx_frame->buf = av_malloc(cx_frame->sz);
445 if (!cx_frame->buf) {
446 av_log(avctx, AV_LOG_ERROR,
447 "Data buffer alloc (%zu bytes) failed\n",
449 return AVERROR(ENOMEM);
451 memcpy(cx_frame->buf, pkt->data.frame.buf, pkt->data.frame.sz);
452 coded_frame_add(&ctx->coded_frame_list, cx_frame);
455 case VPX_CODEC_STATS_PKT: {
456 struct vpx_fixed_buf *stats = &ctx->twopass_stats;
457 stats->buf = av_realloc(stats->buf,
458 stats->sz + pkt->data.twopass_stats.sz);
460 av_log(avctx, AV_LOG_ERROR, "Stat buffer realloc failed\n");
461 return AVERROR(ENOMEM);
463 memcpy((uint8_t*)stats->buf + stats->sz,
464 pkt->data.twopass_stats.buf, pkt->data.twopass_stats.sz);
465 stats->sz += pkt->data.twopass_stats.sz;
468 case VPX_CODEC_PSNR_PKT: //FIXME add support for CODEC_FLAG_PSNR
469 case VPX_CODEC_CUSTOM_PKT:
470 //ignore unsupported/unrecognized packet types
478 static int vp8_encode(AVCodecContext *avctx, uint8_t *buf, int buf_size,
481 VP8Context *ctx = avctx->priv_data;
482 AVFrame *frame = data;
483 struct vpx_image *rawimg = NULL;
484 int64_t timestamp = 0;
488 rawimg = &ctx->rawimg;
489 rawimg->planes[VPX_PLANE_Y] = frame->data[0];
490 rawimg->planes[VPX_PLANE_U] = frame->data[1];
491 rawimg->planes[VPX_PLANE_V] = frame->data[2];
492 rawimg->stride[VPX_PLANE_Y] = frame->linesize[0];
493 rawimg->stride[VPX_PLANE_U] = frame->linesize[1];
494 rawimg->stride[VPX_PLANE_V] = frame->linesize[2];
495 timestamp = frame->pts;
498 res = vpx_codec_encode(&ctx->encoder, rawimg, timestamp,
499 avctx->ticks_per_frame, 0, ctx->deadline);
500 if (res != VPX_CODEC_OK) {
501 log_encoder_error(avctx, "Error encoding frame");
502 return AVERROR_INVALIDDATA;
504 coded_size = queue_frames(avctx, buf, buf_size, avctx->coded_frame);
506 if (!frame && avctx->flags & CODEC_FLAG_PASS1) {
507 unsigned int b64_size = AV_BASE64_SIZE(ctx->twopass_stats.sz);
509 avctx->stats_out = av_malloc(b64_size);
510 if (!avctx->stats_out) {
511 av_log(avctx, AV_LOG_ERROR, "Stat buffer alloc (%d bytes) failed\n",
513 return AVERROR(ENOMEM);
515 av_base64_encode(avctx->stats_out, b64_size, ctx->twopass_stats.buf,
516 ctx->twopass_stats.sz);
521 #define OFFSET(x) offsetof(VP8Context, x)
522 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
523 static const AVOption options[] = {
524 { "cpu-used", "Quality/Speed ratio modifier", OFFSET(cpu_used), FF_OPT_TYPE_INT, {INT_MIN}, INT_MIN, INT_MAX, VE},
525 { "auto-alt-ref", "Enable use of alternate reference "
526 "frames (2-pass only)", OFFSET(auto_alt_ref), FF_OPT_TYPE_INT, {-1}, -1, 1, VE},
527 { "lag-in-frames", "Number of frames to look ahead for "
528 "alternate reference frame selection", OFFSET(lag_in_frames), FF_OPT_TYPE_INT, {-1}, -1, INT_MAX, VE},
529 { "arnr-maxframes", "altref noise reduction max frame count", OFFSET(arnr_max_frames), FF_OPT_TYPE_INT, {-1}, -1, INT_MAX, VE},
530 { "arnr-strength", "altref noise reduction filter strength", OFFSET(arnr_strength), FF_OPT_TYPE_INT, {-1}, -1, INT_MAX, VE},
531 { "arnr-type", "altref noise reduction filter type", OFFSET(arnr_type), FF_OPT_TYPE_INT, {-1}, -1, INT_MAX, VE, "arnr_type"},
532 { "backward", NULL, 0, FF_OPT_TYPE_CONST, {1}, 0, 0, VE, "arnr_type" },
533 { "forward", NULL, 0, FF_OPT_TYPE_CONST, {2}, 0, 0, VE, "arnr_type" },
534 { "centered", NULL, 0, FF_OPT_TYPE_CONST, {3}, 0, 0, VE, "arnr_type" },
535 { "deadline", "Time to spend encoding, in microseconds.", OFFSET(deadline), FF_OPT_TYPE_INT, {VPX_DL_GOOD_QUALITY}, INT_MIN, INT_MAX, VE, "quality"},
536 { "best", NULL, 0, FF_OPT_TYPE_CONST, {VPX_DL_BEST_QUALITY}, 0, 0, VE, "quality"},
537 { "good", NULL, 0, FF_OPT_TYPE_CONST, {VPX_DL_GOOD_QUALITY}, 0, 0, VE, "quality"},
538 { "realtime", NULL, 0, FF_OPT_TYPE_CONST, {VPX_DL_REALTIME}, 0, 0, VE, "quality"},
539 { "error-resilient", "Error resilience configuration", OFFSET(error_resilient), FF_OPT_TYPE_FLAGS, {0}, INT_MIN, INT_MAX, VE, "er"},
540 { "default", "Improve resiliency against losses of whole frames", 0, FF_OPT_TYPE_CONST, {VPX_ERROR_RESILIENT_DEFAULT}, 0, 0, VE, "er"},
541 { "partitions", "The frame partitions are independently decodable "
542 "by the bool decoder, meaning that partitions can be decoded even "
543 "though earlier partitions have been lost. Note that intra predicition"
544 " is still done over the partition boundary.", 0, FF_OPT_TYPE_CONST, {VPX_ERROR_RESILIENT_PARTITIONS}, 0, 0, VE, "er"},
548 static const AVClass class = {
549 .class_name = "libvpx encoder",
550 .item_name = av_default_item_name,
552 .version = LIBAVUTIL_VERSION_INT,
555 AVCodec ff_libvpx_encoder = {
557 .type = AVMEDIA_TYPE_VIDEO,
559 .priv_data_size = sizeof(VP8Context),
561 .encode = vp8_encode,
563 .capabilities = CODEC_CAP_DELAY,
564 .pix_fmts = (const enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_NONE},
565 .long_name = NULL_IF_CONFIG_SMALL("libvpx VP8"),
566 .priv_class = &class,