vpxenc: add private options
[libav.git] / libavcodec / libvpxenc.c
CommitLineData
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1/*
2 * Copyright (c) 2010, Google, Inc.
3 *
2912e87a 4 * This file is part of Libav.
ee0e9146 5 *
2912e87a 6 * Libav is free software; you can redistribute it and/or
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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 *
2912e87a 11 * Libav is distributed in the hope that it will be useful,
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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
2912e87a 17 * License along with Libav; if not, write to the Free Software
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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"
e3eb015b 32#include "internal.h"
ee0e9146 33#include "libavutil/base64.h"
954a6532 34#include "libavutil/mathematics.h"
e3eb015b 35#include "libavutil/opt.h"
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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 {
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42 void *buf; /**< compressed data buffer */
43 size_t sz; /**< length of compressed data */
44 int64_t pts; /**< time stamp to show frame
ee0e9146 45 (in timebase units) */
1aa15491 46 unsigned long duration; /**< duration to show frame
ee0e9146 47 (in timebase units) */
1aa15491 48 uint32_t flags; /**< flags for this frame */
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49 struct FrameListData *next;
50};
51
52typedef struct VP8EncoderContext {
e3eb015b 53 AVClass *class;
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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;
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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;
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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;
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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
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237 if (ctx->lag_in_frames >= 0)
238 enccfg.g_lag_in_frames = ctx->lag_in_frames;
239
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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
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253 enccfg.rc_min_quantizer = avctx->qmin;
254 enccfg.rc_max_quantizer = avctx->qmax;
00ce2cbe 255 enccfg.rc_dropframe_thresh = avctx->frame_skip_threshold;
ee0e9146 256
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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 =
9d845ca4 260 avctx->rc_min_rate * 100LL / avctx->bit_rate;
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261 if (avctx->rc_max_rate)
262 enccfg.rc_2pass_vbr_maxsection_pct =
9d845ca4 263 avctx->rc_max_rate * 100LL / avctx->bit_rate;
7eb185e0 264
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265 if (avctx->rc_buffer_size)
266 enccfg.rc_buf_sz =
9d845ca4 267 avctx->rc_buffer_size * 1000LL / avctx->bit_rate;
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268 if (avctx->rc_initial_buffer_occupancy)
269 enccfg.rc_buf_initial_sz =
9d845ca4 270 avctx->rc_initial_buffer_occupancy * 1000LL / avctx->bit_rate;
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271 enccfg.rc_buf_optimal_sz = enccfg.rc_buf_sz * 5 / 6;
272
07777c2d 273 //_enc_init() will balk if kf_min_dist differs from max w/VPX_KF_AUTO
ee0e9146 274 if (avctx->keyint_min == avctx->gop_size)
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275 enccfg.kf_min_dist = avctx->keyint_min;
276 enccfg.kf_max_dist = avctx->gop_size;
277
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) {
281 int decode_size;
282
283 if (!avctx->stats_in) {
284 av_log(avctx, AV_LOG_ERROR, "No stats file for second pass\n");
285 return AVERROR_INVALIDDATA;
286 }
287
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);
295 }
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;
301 }
302
303 ctx->twopass_stats.sz = decode_size;
304 enccfg.rc_twopass_stats_in = ctx->twopass_stats;
305 }
306
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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
309 quality. */
310 if (avctx->profile != FF_PROFILE_UNKNOWN)
311 enccfg.g_profile = avctx->profile;
ee0e9146 312
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313 enccfg.g_error_resilient = ctx->error_resilient;
314
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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);
321 }
322
323 //codec control failures are currently treated only as warnings
324 av_log(avctx, AV_LOG_DEBUG, "vpx_codec_control\n");
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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);
ee0e9146 335 codecctl_int(avctx, VP8E_SET_NOISE_SENSITIVITY, avctx->noise_reduction);
2aa72ecc 336 codecctl_int(avctx, VP8E_SET_TOKEN_PARTITIONS, av_log2(avctx->slices));
88aa2159 337 codecctl_int(avctx, VP8E_SET_STATIC_THRESHOLD, avctx->mb_threshold);
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338
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,
341 (unsigned char*)1);
342
343 avctx->coded_frame = avcodec_alloc_frame();
344 if (!avctx->coded_frame) {
345 av_log(avctx, AV_LOG_ERROR, "Error allocating coded frame\n");
346 vp8_free(avctx);
347 return AVERROR(ENOMEM);
348 }
349 return 0;
350}
351
352static inline void cx_pktcpy(struct FrameListData *dst,
353 const struct vpx_codec_cx_pkt *src)
354{
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;
360}
361
362/**
363 * Store coded frame information in format suitable for return from encode().
364 *
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
369 */
370static int storeframe(AVCodecContext *avctx, struct FrameListData *cx_frame,
371 uint8_t *buf, int buf_size, AVFrame *coded_frame)
372{
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);
378
379 if (coded_frame->key_frame)
975a1447 380 coded_frame->pict_type = AV_PICTURE_TYPE_I;
ee0e9146 381 else
975a1447 382 coded_frame->pict_type = AV_PICTURE_TYPE_P;
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383 } else {
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);
388 }
389 return buf_size;
390}
391
392/**
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
399 */
400static int queue_frames(AVCodecContext *avctx, uint8_t *buf, int buf_size,
401 AVFrame *coded_frame)
402{
403 VP8Context *ctx = avctx->priv_data;
404 const struct vpx_codec_cx_pkt *pkt;
405 const void *iter = NULL;
406 int size = 0;
407
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);
412 if (size < 0)
413 return AVERROR(EINVAL);
414 ctx->coded_frame_list = cx_frame->next;
415 free_coded_frame(cx_frame);
416 }
417
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))) {
421 switch (pkt->kind) {
422 case VPX_CODEC_CX_FRAME_PKT:
423 if (!size) {
424 struct FrameListData cx_frame;
425
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);
431 if (size < 0)
432 return AVERROR(EINVAL);
433 } else {
434 struct FrameListData *cx_frame =
435 av_malloc(sizeof(struct FrameListData));
436
437 if (!cx_frame) {
438 av_log(avctx, AV_LOG_ERROR,
439 "Frame queue element alloc failed\n");
440 return AVERROR(ENOMEM);
441 }
442 cx_pktcpy(cx_frame, pkt);
443 cx_frame->buf = av_malloc(cx_frame->sz);
444
445 if (!cx_frame->buf) {
446 av_log(avctx, AV_LOG_ERROR,
447 "Data buffer alloc (%zu bytes) failed\n",
448 cx_frame->sz);
449 return AVERROR(ENOMEM);
450 }
451 memcpy(cx_frame->buf, pkt->data.frame.buf, pkt->data.frame.sz);
452 coded_frame_add(&ctx->coded_frame_list, cx_frame);
453 }
454 break;
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);
459 if (!stats->buf) {
460 av_log(avctx, AV_LOG_ERROR, "Stat buffer realloc failed\n");
461 return AVERROR(ENOMEM);
462 }
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;
466 break;
467 }
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
471 break;
472 }
473 }
474
475 return size;
476}
477
478static int vp8_encode(AVCodecContext *avctx, uint8_t *buf, int buf_size,
479 void *data)
480{
481 VP8Context *ctx = avctx->priv_data;
482 AVFrame *frame = data;
483 struct vpx_image *rawimg = NULL;
484 int64_t timestamp = 0;
485 int res, coded_size;
486
487 if (frame) {
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;
496 }
497
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;
503 }
504 coded_size = queue_frames(avctx, buf, buf_size, avctx->coded_frame);
505
506 if (!frame && avctx->flags & CODEC_FLAG_PASS1) {
082a0a33 507 unsigned int b64_size = AV_BASE64_SIZE(ctx->twopass_stats.sz);
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508
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",
512 b64_size);
513 return AVERROR(ENOMEM);
514 }
515 av_base64_encode(avctx->stats_out, b64_size, ctx->twopass_stats.buf,
516 ctx->twopass_stats.sz);
517 }
518 return coded_size;
519}
520
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521#define OFFSET(x) offsetof(VP8Context, x)
522#define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
523static 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"},
545 { NULL }
546};
547
548static const AVClass class = {
549 .class_name = "libvpx encoder",
550 .item_name = av_default_item_name,
551 .option = options,
552 .version = LIBAVUTIL_VERSION_INT,
553};
554
d36beb3f 555AVCodec ff_libvpx_encoder = {
ec6402b7
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556 .name = "libvpx",
557 .type = AVMEDIA_TYPE_VIDEO,
558 .id = CODEC_ID_VP8,
559 .priv_data_size = sizeof(VP8Context),
560 .init = vp8_init,
561 .encode = vp8_encode,
562 .close = vp8_free,
563 .capabilities = CODEC_CAP_DELAY,
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564 .pix_fmts = (const enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_NONE},
565 .long_name = NULL_IF_CONFIG_SMALL("libvpx VP8"),
e3eb015b 566 .priv_class = &class,
ee0e9146 567};