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libvpxenc.c
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1 /*
2  * Copyright (c) 2010, Google, Inc.
3  *
4  * This file is part of FFmpeg.
5  *
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.
10  *
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.
15  *
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
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/avassert.h"
34 #include "libavutil/base64.h"
35 #include "libavutil/common.h"
36 #include "libavutil/mathematics.h"
37 #include "libavutil/opt.h"
38 
39 /**
40  * Portion of struct vpx_codec_cx_pkt from vpx_encoder.h.
41  * One encoded frame returned from the library.
42  */
43 struct FrameListData {
44  void *buf; /**< compressed data buffer */
45  size_t sz; /**< length of compressed data */
46  int64_t pts; /**< time stamp to show frame
47  (in timebase units) */
48  unsigned long duration; /**< duration to show frame
49  (in timebase units) */
50  uint32_t flags; /**< flags for this frame */
52 };
53 
54 typedef struct VP8EncoderContext {
55  AVClass *class;
56  struct vpx_codec_ctx encoder;
57  struct vpx_image rawimg;
58  struct vpx_fixed_buf twopass_stats;
59  int deadline; //i.e., RT/GOOD/BEST
61 
62  int cpu_used;
63  /**
64  * VP8 specific flags, see VP8F_* below.
65  */
66  int flags;
67 #define VP8F_ERROR_RESILIENT 0x00000001 ///< Enable measures appropriate for streaming over lossy links
68 #define VP8F_AUTO_ALT_REF 0x00000002 ///< Enable automatic alternate reference frame generation
69 
71 
74  int arnr_type;
75 
78  int crf;
80 } VP8Context;
81 
82 /** String mappings for enum vp8e_enc_control_id */
83 static const char *const ctlidstr[] = {
84  [VP8E_UPD_ENTROPY] = "VP8E_UPD_ENTROPY",
85  [VP8E_UPD_REFERENCE] = "VP8E_UPD_REFERENCE",
86  [VP8E_USE_REFERENCE] = "VP8E_USE_REFERENCE",
87  [VP8E_SET_ROI_MAP] = "VP8E_SET_ROI_MAP",
88  [VP8E_SET_ACTIVEMAP] = "VP8E_SET_ACTIVEMAP",
89  [VP8E_SET_SCALEMODE] = "VP8E_SET_SCALEMODE",
90  [VP8E_SET_CPUUSED] = "VP8E_SET_CPUUSED",
91  [VP8E_SET_ENABLEAUTOALTREF] = "VP8E_SET_ENABLEAUTOALTREF",
92  [VP8E_SET_NOISE_SENSITIVITY] = "VP8E_SET_NOISE_SENSITIVITY",
93  [VP8E_SET_SHARPNESS] = "VP8E_SET_SHARPNESS",
94  [VP8E_SET_STATIC_THRESHOLD] = "VP8E_SET_STATIC_THRESHOLD",
95  [VP8E_SET_TOKEN_PARTITIONS] = "VP8E_SET_TOKEN_PARTITIONS",
96  [VP8E_GET_LAST_QUANTIZER] = "VP8E_GET_LAST_QUANTIZER",
97  [VP8E_SET_ARNR_MAXFRAMES] = "VP8E_SET_ARNR_MAXFRAMES",
98  [VP8E_SET_ARNR_STRENGTH] = "VP8E_SET_ARNR_STRENGTH",
99  [VP8E_SET_ARNR_TYPE] = "VP8E_SET_ARNR_TYPE",
100  [VP8E_SET_CQ_LEVEL] = "VP8E_SET_CQ_LEVEL",
101  [VP8E_SET_MAX_INTRA_BITRATE_PCT] = "VP8E_SET_MAX_INTRA_BITRATE_PCT",
102 };
103 
104 static av_cold void log_encoder_error(AVCodecContext *avctx, const char *desc)
105 {
106  VP8Context *ctx = avctx->priv_data;
107  const char *error = vpx_codec_error(&ctx->encoder);
108  const char *detail = vpx_codec_error_detail(&ctx->encoder);
109 
110  av_log(avctx, AV_LOG_ERROR, "%s: %s\n", desc, error);
111  if (detail)
112  av_log(avctx, AV_LOG_ERROR, " Additional information: %s\n", detail);
113 }
114 
116  const struct vpx_codec_enc_cfg *cfg)
117 {
118  int width = -30;
119  int level = AV_LOG_DEBUG;
120 
121  av_log(avctx, level, "vpx_codec_enc_cfg\n");
122  av_log(avctx, level, "generic settings\n"
123  " %*s%u\n %*s%u\n %*s%u\n %*s%u\n %*s%u\n"
124  " %*s{%u/%u}\n %*s%u\n %*s%d\n %*s%u\n",
125  width, "g_usage:", cfg->g_usage,
126  width, "g_threads:", cfg->g_threads,
127  width, "g_profile:", cfg->g_profile,
128  width, "g_w:", cfg->g_w,
129  width, "g_h:", cfg->g_h,
130  width, "g_timebase:", cfg->g_timebase.num, cfg->g_timebase.den,
131  width, "g_error_resilient:", cfg->g_error_resilient,
132  width, "g_pass:", cfg->g_pass,
133  width, "g_lag_in_frames:", cfg->g_lag_in_frames);
134  av_log(avctx, level, "rate control settings\n"
135  " %*s%u\n %*s%u\n %*s%u\n %*s%u\n"
136  " %*s%d\n %*s%p(%zu)\n %*s%u\n",
137  width, "rc_dropframe_thresh:", cfg->rc_dropframe_thresh,
138  width, "rc_resize_allowed:", cfg->rc_resize_allowed,
139  width, "rc_resize_up_thresh:", cfg->rc_resize_up_thresh,
140  width, "rc_resize_down_thresh:", cfg->rc_resize_down_thresh,
141  width, "rc_end_usage:", cfg->rc_end_usage,
142  width, "rc_twopass_stats_in:", cfg->rc_twopass_stats_in.buf, cfg->rc_twopass_stats_in.sz,
143  width, "rc_target_bitrate:", cfg->rc_target_bitrate);
144  av_log(avctx, level, "quantizer settings\n"
145  " %*s%u\n %*s%u\n",
146  width, "rc_min_quantizer:", cfg->rc_min_quantizer,
147  width, "rc_max_quantizer:", cfg->rc_max_quantizer);
148  av_log(avctx, level, "bitrate tolerance\n"
149  " %*s%u\n %*s%u\n",
150  width, "rc_undershoot_pct:", cfg->rc_undershoot_pct,
151  width, "rc_overshoot_pct:", cfg->rc_overshoot_pct);
152  av_log(avctx, level, "decoder buffer model\n"
153  " %*s%u\n %*s%u\n %*s%u\n",
154  width, "rc_buf_sz:", cfg->rc_buf_sz,
155  width, "rc_buf_initial_sz:", cfg->rc_buf_initial_sz,
156  width, "rc_buf_optimal_sz:", cfg->rc_buf_optimal_sz);
157  av_log(avctx, level, "2 pass rate control settings\n"
158  " %*s%u\n %*s%u\n %*s%u\n",
159  width, "rc_2pass_vbr_bias_pct:", cfg->rc_2pass_vbr_bias_pct,
160  width, "rc_2pass_vbr_minsection_pct:", cfg->rc_2pass_vbr_minsection_pct,
161  width, "rc_2pass_vbr_maxsection_pct:", cfg->rc_2pass_vbr_maxsection_pct);
162  av_log(avctx, level, "keyframing settings\n"
163  " %*s%d\n %*s%u\n %*s%u\n",
164  width, "kf_mode:", cfg->kf_mode,
165  width, "kf_min_dist:", cfg->kf_min_dist,
166  width, "kf_max_dist:", cfg->kf_max_dist);
167  av_log(avctx, level, "\n");
168 }
169 
170 static void coded_frame_add(void *list, struct FrameListData *cx_frame)
171 {
172  struct FrameListData **p = list;
173 
174  while (*p != NULL)
175  p = &(*p)->next;
176  *p = cx_frame;
177  cx_frame->next = NULL;
178 }
179 
180 static av_cold void free_coded_frame(struct FrameListData *cx_frame)
181 {
182  av_freep(&cx_frame->buf);
183  av_freep(&cx_frame);
184 }
185 
186 static av_cold void free_frame_list(struct FrameListData *list)
187 {
188  struct FrameListData *p = list;
189 
190  while (p) {
191  list = list->next;
192  free_coded_frame(p);
193  p = list;
194  }
195 }
196 
198  enum vp8e_enc_control_id id, int val)
199 {
200  VP8Context *ctx = avctx->priv_data;
201  char buf[80];
202  int width = -30;
203  int res;
204 
205  snprintf(buf, sizeof(buf), "%s:", ctlidstr[id]);
206  av_log(avctx, AV_LOG_DEBUG, " %*s%d\n", width, buf, val);
207 
208  res = vpx_codec_control(&ctx->encoder, id, val);
209  if (res != VPX_CODEC_OK) {
210  snprintf(buf, sizeof(buf), "Failed to set %s codec control",
211  ctlidstr[id]);
212  log_encoder_error(avctx, buf);
213  }
214 
215  return res == VPX_CODEC_OK ? 0 : AVERROR(EINVAL);
216 }
217 
218 static av_cold int vp8_free(AVCodecContext *avctx)
219 {
220  VP8Context *ctx = avctx->priv_data;
221 
222  vpx_codec_destroy(&ctx->encoder);
223  av_freep(&ctx->twopass_stats.buf);
224  av_freep(&avctx->coded_frame);
225  av_freep(&avctx->stats_out);
227  return 0;
228 }
229 
230 static av_cold int vp8_init(AVCodecContext *avctx)
231 {
232  VP8Context *ctx = avctx->priv_data;
233  const struct vpx_codec_iface *iface = &vpx_codec_vp8_cx_algo;
234  struct vpx_codec_enc_cfg enccfg;
235  int res;
236 
237  av_log(avctx, AV_LOG_INFO, "%s\n", vpx_codec_version_str());
238  av_log(avctx, AV_LOG_VERBOSE, "%s\n", vpx_codec_build_config());
239 
240  if ((res = vpx_codec_enc_config_default(iface, &enccfg, 0)) != VPX_CODEC_OK) {
241  av_log(avctx, AV_LOG_ERROR, "Failed to get config: %s\n",
242  vpx_codec_err_to_string(res));
243  return AVERROR(EINVAL);
244  }
245 
246  if(!avctx->bit_rate)
247  if(avctx->rc_max_rate || avctx->rc_buffer_size || avctx->rc_initial_buffer_occupancy) {
248  av_log( avctx, AV_LOG_ERROR, "Rate control parameters set without a bitrate\n");
249  return AVERROR(EINVAL);
250  }
251 
252  dump_enc_cfg(avctx, &enccfg);
253 
254  enccfg.g_w = avctx->width;
255  enccfg.g_h = avctx->height;
256  enccfg.g_timebase.num = avctx->time_base.num;
257  enccfg.g_timebase.den = avctx->time_base.den;
258  enccfg.g_threads = avctx->thread_count;
259  enccfg.g_lag_in_frames= ctx->lag_in_frames;
260 
261  if (avctx->flags & CODEC_FLAG_PASS1)
262  enccfg.g_pass = VPX_RC_FIRST_PASS;
263  else if (avctx->flags & CODEC_FLAG_PASS2)
264  enccfg.g_pass = VPX_RC_LAST_PASS;
265  else
266  enccfg.g_pass = VPX_RC_ONE_PASS;
267 
268  if (avctx->rc_min_rate == avctx->rc_max_rate &&
269  avctx->rc_min_rate == avctx->bit_rate && avctx->bit_rate)
270  enccfg.rc_end_usage = VPX_CBR;
271  else if (ctx->crf)
272  enccfg.rc_end_usage = VPX_CQ;
273 
274  if (avctx->bit_rate) {
275  enccfg.rc_target_bitrate = av_rescale_rnd(avctx->bit_rate, 1, 1000,
277  } else {
278  if (enccfg.rc_end_usage == VPX_CQ) {
279  enccfg.rc_target_bitrate = 1000000;
280  } else {
281  avctx->bit_rate = enccfg.rc_target_bitrate * 1000;
282  av_log(avctx, AV_LOG_WARNING,
283  "Neither bitrate nor constrained quality specified, using default bitrate of %dkbit/sec\n",
284  enccfg.rc_target_bitrate);
285  }
286  }
287 
288  if (avctx->qmin > 0)
289  enccfg.rc_min_quantizer = avctx->qmin;
290  if (avctx->qmax > 0)
291  enccfg.rc_max_quantizer = avctx->qmax;
292  enccfg.rc_dropframe_thresh = avctx->frame_skip_threshold;
293 
294  //0-100 (0 => CBR, 100 => VBR)
295  enccfg.rc_2pass_vbr_bias_pct = round(avctx->qcompress * 100);
296  if (avctx->bit_rate)
297  enccfg.rc_2pass_vbr_minsection_pct =
298  avctx->rc_min_rate * 100LL / avctx->bit_rate;
299  if (avctx->rc_max_rate)
300  enccfg.rc_2pass_vbr_maxsection_pct =
301  avctx->rc_max_rate * 100LL / avctx->bit_rate;
302 
303  if (avctx->rc_buffer_size)
304  enccfg.rc_buf_sz =
305  avctx->rc_buffer_size * 1000LL / avctx->bit_rate;
306  if (avctx->rc_initial_buffer_occupancy)
307  enccfg.rc_buf_initial_sz =
308  avctx->rc_initial_buffer_occupancy * 1000LL / avctx->bit_rate;
309  enccfg.rc_buf_optimal_sz = enccfg.rc_buf_sz * 5 / 6;
310  enccfg.rc_undershoot_pct = round(avctx->rc_buffer_aggressivity * 100);
311 
312  //_enc_init() will balk if kf_min_dist differs from max w/VPX_KF_AUTO
313  if (avctx->keyint_min >= 0 && avctx->keyint_min == avctx->gop_size)
314  enccfg.kf_min_dist = avctx->keyint_min;
315  if (avctx->gop_size >= 0)
316  enccfg.kf_max_dist = avctx->gop_size;
317 
318  if (enccfg.g_pass == VPX_RC_FIRST_PASS)
319  enccfg.g_lag_in_frames = 0;
320  else if (enccfg.g_pass == VPX_RC_LAST_PASS) {
321  int decode_size;
322 
323  if (!avctx->stats_in) {
324  av_log(avctx, AV_LOG_ERROR, "No stats file for second pass\n");
325  return AVERROR_INVALIDDATA;
326  }
327 
328  ctx->twopass_stats.sz = strlen(avctx->stats_in) * 3 / 4;
329  ctx->twopass_stats.buf = av_malloc(ctx->twopass_stats.sz);
330  if (!ctx->twopass_stats.buf) {
331  av_log(avctx, AV_LOG_ERROR,
332  "Stat buffer alloc (%zu bytes) failed\n",
333  ctx->twopass_stats.sz);
334  return AVERROR(ENOMEM);
335  }
336  decode_size = av_base64_decode(ctx->twopass_stats.buf, avctx->stats_in,
337  ctx->twopass_stats.sz);
338  if (decode_size < 0) {
339  av_log(avctx, AV_LOG_ERROR, "Stat buffer decode failed\n");
340  return AVERROR_INVALIDDATA;
341  }
342 
343  ctx->twopass_stats.sz = decode_size;
344  enccfg.rc_twopass_stats_in = ctx->twopass_stats;
345  }
346 
347  /* 0-3: For non-zero values the encoder increasingly optimizes for reduced
348  complexity playback on low powered devices at the expense of encode
349  quality. */
350  if (avctx->profile != FF_PROFILE_UNKNOWN)
351  enccfg.g_profile = avctx->profile;
352 
353  enccfg.g_error_resilient = ctx->error_resilient || ctx->flags & VP8F_ERROR_RESILIENT;
354 
355  dump_enc_cfg(avctx, &enccfg);
356  /* Construct Encoder Context */
357  res = vpx_codec_enc_init(&ctx->encoder, iface, &enccfg, 0);
358  if (res != VPX_CODEC_OK) {
359  log_encoder_error(avctx, "Failed to initialize encoder");
360  return AVERROR(EINVAL);
361  }
362 
363  //codec control failures are currently treated only as warnings
364  av_log(avctx, AV_LOG_DEBUG, "vpx_codec_control\n");
365  if (ctx->cpu_used != INT_MIN)
366  codecctl_int(avctx, VP8E_SET_CPUUSED, ctx->cpu_used);
367  if (ctx->flags & VP8F_AUTO_ALT_REF)
368  ctx->auto_alt_ref = 1;
369  if (ctx->auto_alt_ref >= 0)
370  codecctl_int(avctx, VP8E_SET_ENABLEAUTOALTREF, ctx->auto_alt_ref);
371  if (ctx->arnr_max_frames >= 0)
372  codecctl_int(avctx, VP8E_SET_ARNR_MAXFRAMES, ctx->arnr_max_frames);
373  if (ctx->arnr_strength >= 0)
374  codecctl_int(avctx, VP8E_SET_ARNR_STRENGTH, ctx->arnr_strength);
375  if (ctx->arnr_type >= 0)
376  codecctl_int(avctx, VP8E_SET_ARNR_TYPE, ctx->arnr_type);
377  codecctl_int(avctx, VP8E_SET_NOISE_SENSITIVITY, avctx->noise_reduction);
378  codecctl_int(avctx, VP8E_SET_TOKEN_PARTITIONS, av_log2(avctx->slices));
379  codecctl_int(avctx, VP8E_SET_STATIC_THRESHOLD, avctx->mb_threshold);
380  codecctl_int(avctx, VP8E_SET_CQ_LEVEL, ctx->crf);
381  if (ctx->max_intra_rate >= 0)
382  codecctl_int(avctx, VP8E_SET_MAX_INTRA_BITRATE_PCT, ctx->max_intra_rate);
383 
384  av_log(avctx, AV_LOG_DEBUG, "Using deadline: %d\n", ctx->deadline);
385 
386  //provide dummy value to initialize wrapper, values will be updated each _encode()
387  vpx_img_wrap(&ctx->rawimg, VPX_IMG_FMT_I420, avctx->width, avctx->height, 1,
388  (unsigned char*)1);
389 
390  avctx->coded_frame = avcodec_alloc_frame();
391  if (!avctx->coded_frame) {
392  av_log(avctx, AV_LOG_ERROR, "Error allocating coded frame\n");
393  vp8_free(avctx);
394  return AVERROR(ENOMEM);
395  }
396  return 0;
397 }
398 
399 static inline void cx_pktcpy(struct FrameListData *dst,
400  const struct vpx_codec_cx_pkt *src)
401 {
402  dst->pts = src->data.frame.pts;
403  dst->duration = src->data.frame.duration;
404  dst->flags = src->data.frame.flags;
405  dst->sz = src->data.frame.sz;
406  dst->buf = src->data.frame.buf;
407 }
408 
409 /**
410  * Store coded frame information in format suitable for return from encode2().
411  *
412  * Write information from @a cx_frame to @a pkt
413  * @return packet data size on success
414  * @return a negative AVERROR on error
415  */
416 static int storeframe(AVCodecContext *avctx, struct FrameListData *cx_frame,
417  AVPacket *pkt, AVFrame *coded_frame)
418 {
419  int ret = ff_alloc_packet2(avctx, pkt, cx_frame->sz);
420  if (ret >= 0) {
421  memcpy(pkt->data, cx_frame->buf, pkt->size);
422  pkt->pts = pkt->dts = cx_frame->pts;
423  coded_frame->pts = cx_frame->pts;
424  coded_frame->key_frame = !!(cx_frame->flags & VPX_FRAME_IS_KEY);
425 
426  if (coded_frame->key_frame) {
427  coded_frame->pict_type = AV_PICTURE_TYPE_I;
428  pkt->flags |= AV_PKT_FLAG_KEY;
429  } else
430  coded_frame->pict_type = AV_PICTURE_TYPE_P;
431  } else {
432  return ret;
433  }
434  return pkt->size;
435 }
436 
437 /**
438  * Queue multiple output frames from the encoder, returning the front-most.
439  * In cases where vpx_codec_get_cx_data() returns more than 1 frame append
440  * the frame queue. Return the head frame if available.
441  * @return Stored frame size
442  * @return AVERROR(EINVAL) on output size error
443  * @return AVERROR(ENOMEM) on coded frame queue data allocation error
444  */
445 static int queue_frames(AVCodecContext *avctx, AVPacket *pkt_out,
446  AVFrame *coded_frame)
447 {
448  VP8Context *ctx = avctx->priv_data;
449  const struct vpx_codec_cx_pkt *pkt;
450  const void *iter = NULL;
451  int size = 0;
452 
453  if (ctx->coded_frame_list) {
454  struct FrameListData *cx_frame = ctx->coded_frame_list;
455  /* return the leading frame if we've already begun queueing */
456  size = storeframe(avctx, cx_frame, pkt_out, coded_frame);
457  if (size < 0)
458  return size;
459  ctx->coded_frame_list = cx_frame->next;
460  free_coded_frame(cx_frame);
461  }
462 
463  /* consume all available output from the encoder before returning. buffers
464  are only good through the next vpx_codec call */
465  while ((pkt = vpx_codec_get_cx_data(&ctx->encoder, &iter))) {
466  switch (pkt->kind) {
467  case VPX_CODEC_CX_FRAME_PKT:
468  if (!size) {
469  struct FrameListData cx_frame;
470 
471  /* avoid storing the frame when the list is empty and we haven't yet
472  provided a frame for output */
474  cx_pktcpy(&cx_frame, pkt);
475  size = storeframe(avctx, &cx_frame, pkt_out, coded_frame);
476  if (size < 0)
477  return size;
478  } else {
479  struct FrameListData *cx_frame =
480  av_malloc(sizeof(struct FrameListData));
481 
482  if (!cx_frame) {
483  av_log(avctx, AV_LOG_ERROR,
484  "Frame queue element alloc failed\n");
485  return AVERROR(ENOMEM);
486  }
487  cx_pktcpy(cx_frame, pkt);
488  cx_frame->buf = av_malloc(cx_frame->sz);
489 
490  if (!cx_frame->buf) {
491  av_log(avctx, AV_LOG_ERROR,
492  "Data buffer alloc (%zu bytes) failed\n",
493  cx_frame->sz);
494  av_free(cx_frame);
495  return AVERROR(ENOMEM);
496  }
497  memcpy(cx_frame->buf, pkt->data.frame.buf, pkt->data.frame.sz);
498  coded_frame_add(&ctx->coded_frame_list, cx_frame);
499  }
500  break;
501  case VPX_CODEC_STATS_PKT: {
502  struct vpx_fixed_buf *stats = &ctx->twopass_stats;
503  stats->buf = av_realloc_f(stats->buf, 1,
504  stats->sz + pkt->data.twopass_stats.sz);
505  if (!stats->buf) {
506  av_log(avctx, AV_LOG_ERROR, "Stat buffer realloc failed\n");
507  return AVERROR(ENOMEM);
508  }
509  memcpy((uint8_t*)stats->buf + stats->sz,
510  pkt->data.twopass_stats.buf, pkt->data.twopass_stats.sz);
511  stats->sz += pkt->data.twopass_stats.sz;
512  break;
513  }
514  case VPX_CODEC_PSNR_PKT: //FIXME add support for CODEC_FLAG_PSNR
515  case VPX_CODEC_CUSTOM_PKT:
516  //ignore unsupported/unrecognized packet types
517  break;
518  }
519  }
520 
521  return size;
522 }
523 
524 static int vp8_encode(AVCodecContext *avctx, AVPacket *pkt,
525  const AVFrame *frame, int *got_packet)
526 {
527  VP8Context *ctx = avctx->priv_data;
528  struct vpx_image *rawimg = NULL;
529  int64_t timestamp = 0;
530  int res, coded_size;
531  vpx_enc_frame_flags_t flags = 0;
532 
533  if (frame) {
534  rawimg = &ctx->rawimg;
535  rawimg->planes[VPX_PLANE_Y] = frame->data[0];
536  rawimg->planes[VPX_PLANE_U] = frame->data[1];
537  rawimg->planes[VPX_PLANE_V] = frame->data[2];
538  rawimg->stride[VPX_PLANE_Y] = frame->linesize[0];
539  rawimg->stride[VPX_PLANE_U] = frame->linesize[1];
540  rawimg->stride[VPX_PLANE_V] = frame->linesize[2];
541  timestamp = frame->pts;
542  if (frame->pict_type == AV_PICTURE_TYPE_I)
543  flags |= VPX_EFLAG_FORCE_KF;
544  }
545 
546  res = vpx_codec_encode(&ctx->encoder, rawimg, timestamp,
547  avctx->ticks_per_frame, flags, ctx->deadline);
548  if (res != VPX_CODEC_OK) {
549  log_encoder_error(avctx, "Error encoding frame");
550  return AVERROR_INVALIDDATA;
551  }
552  coded_size = queue_frames(avctx, pkt, avctx->coded_frame);
553 
554  if (!frame && avctx->flags & CODEC_FLAG_PASS1) {
555  unsigned int b64_size = AV_BASE64_SIZE(ctx->twopass_stats.sz);
556 
557  avctx->stats_out = av_malloc(b64_size);
558  if (!avctx->stats_out) {
559  av_log(avctx, AV_LOG_ERROR, "Stat buffer alloc (%d bytes) failed\n",
560  b64_size);
561  return AVERROR(ENOMEM);
562  }
563  av_base64_encode(avctx->stats_out, b64_size, ctx->twopass_stats.buf,
564  ctx->twopass_stats.sz);
565  }
566 
567  *got_packet = !!coded_size;
568  return 0;
569 }
570 
571 #define OFFSET(x) offsetof(VP8Context, x)
572 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
573 static const AVOption options[] = {
574  { "cpu-used", "Quality/Speed ratio modifier", OFFSET(cpu_used), AV_OPT_TYPE_INT, {.i64 = INT_MIN}, INT_MIN, INT_MAX, VE},
575  { "auto-alt-ref", "Enable use of alternate reference "
576  "frames (2-pass only)", OFFSET(auto_alt_ref), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 1, VE},
577  { "lag-in-frames", "Number of frames to look ahead for "
578  "alternate reference frame selection", OFFSET(lag_in_frames), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, VE},
579  { "arnr-maxframes", "altref noise reduction max frame count", OFFSET(arnr_max_frames), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, VE},
580  { "arnr-strength", "altref noise reduction filter strength", OFFSET(arnr_strength), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, VE},
581  { "arnr-type", "altref noise reduction filter type", OFFSET(arnr_type), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, VE, "arnr_type"},
582  { "backward", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = 1}, 0, 0, VE, "arnr_type" },
583  { "forward", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = 2}, 0, 0, VE, "arnr_type" },
584  { "centered", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = 3}, 0, 0, VE, "arnr_type" },
585  { "deadline", "Time to spend encoding, in microseconds.", OFFSET(deadline), AV_OPT_TYPE_INT, {.i64 = VPX_DL_GOOD_QUALITY}, INT_MIN, INT_MAX, VE, "quality"},
586  { "best", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = VPX_DL_BEST_QUALITY}, 0, 0, VE, "quality"},
587  { "good", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = VPX_DL_GOOD_QUALITY}, 0, 0, VE, "quality"},
588  { "realtime", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = VPX_DL_REALTIME}, 0, 0, VE, "quality"},
589  { "error-resilient", "Error resilience configuration", OFFSET(error_resilient), AV_OPT_TYPE_FLAGS, {.i64 = 0}, INT_MIN, INT_MAX, VE, "er"},
590  { "max-intra-rate", "Maximum I-frame bitrate (pct) 0=unlimited", OFFSET(max_intra_rate), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, VE},
591 #ifdef VPX_ERROR_RESILIENT_DEFAULT
592  { "default", "Improve resiliency against losses of whole frames", 0, AV_OPT_TYPE_CONST, {.i64 = VPX_ERROR_RESILIENT_DEFAULT}, 0, 0, VE, "er"},
593  { "partitions", "The frame partitions are independently decodable "
594  "by the bool decoder, meaning that partitions can be decoded even "
595  "though earlier partitions have been lost. Note that intra predicition"
596  " is still done over the partition boundary.", 0, AV_OPT_TYPE_CONST, {.i64 = VPX_ERROR_RESILIENT_PARTITIONS}, 0, 0, VE, "er"},
597 #endif
598 {"speed", "", offsetof(VP8Context, cpu_used), AV_OPT_TYPE_INT, {.i64 = 3}, -16, 16, VE},
599 {"quality", "", offsetof(VP8Context, deadline), AV_OPT_TYPE_INT, {.i64 = VPX_DL_GOOD_QUALITY}, INT_MIN, INT_MAX, VE, "quality"},
600 {"vp8flags", "", offsetof(VP8Context, flags), FF_OPT_TYPE_FLAGS, {.i64 = 0}, 0, UINT_MAX, VE, "flags"},
601 {"error_resilient", "enable error resilience", 0, FF_OPT_TYPE_CONST, {.dbl = VP8F_ERROR_RESILIENT}, INT_MIN, INT_MAX, VE, "flags"},
602 {"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"},
603 {"arnr_max_frames", "altref noise reduction max frame count", offsetof(VP8Context, arnr_max_frames), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 15, VE},
604 {"arnr_strength", "altref noise reduction filter strength", offsetof(VP8Context, arnr_strength), AV_OPT_TYPE_INT, {.i64 = 3}, 0, 6, VE},
605 {"arnr_type", "altref noise reduction filter type", offsetof(VP8Context, arnr_type), AV_OPT_TYPE_INT, {.i64 = 3}, 1, 3, VE},
606 {"rc_lookahead", "Number of frames to look ahead for alternate reference frame selection", offsetof(VP8Context, lag_in_frames), AV_OPT_TYPE_INT, {.i64 = 25}, 0, 25, VE},
607  { "crf", "Select the quality for constant quality mode", offsetof(VP8Context, crf), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 63, VE },
608  { NULL }
609 };
610 
611 static const AVClass class = {
612  .class_name = "libvpx encoder",
613  .item_name = av_default_item_name,
614  .option = options,
616 };
617 
618 static const AVCodecDefault defaults[] = {
619  { "qmin", "-1" },
620  { "qmax", "-1" },
621  { "g", "-1" },
622  { "keyint_min", "-1" },
623  { NULL },
624 };
625 
627  .name = "libvpx",
628  .type = AVMEDIA_TYPE_VIDEO,
629  .id = AV_CODEC_ID_VP8,
630  .priv_data_size = sizeof(VP8Context),
631  .init = vp8_init,
632  .encode2 = vp8_encode,
633  .close = vp8_free,
634  .capabilities = CODEC_CAP_DELAY | CODEC_CAP_AUTO_THREADS,
635  .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
636  .long_name = NULL_IF_CONFIG_SMALL("libvpx VP8"),
637  .priv_class = &class,
638  .defaults = defaults,
639 };