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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 */
51  uint64_t sse[4];
52  int have_sse; /**< true if we have pending sse[] */
53  uint64_t frame_number;
54  struct FrameListData *next;
55 };
56 
57 typedef struct VP8EncoderContext {
58  AVClass *class;
59  struct vpx_codec_ctx encoder;
60  struct vpx_image rawimg;
61  struct vpx_fixed_buf twopass_stats;
62  int deadline; //i.e., RT/GOOD/BEST
63  uint64_t sse[4];
64  int have_sse; /**< true if we have pending sse[] */
65  uint64_t frame_number;
66  struct FrameListData *coded_frame_list;
67 
68  int cpu_used;
69  /**
70  * VP8 specific flags, see VP8F_* below.
71  */
72  int flags;
73 #define VP8F_ERROR_RESILIENT 0x00000001 ///< Enable measures appropriate for streaming over lossy links
74 #define VP8F_AUTO_ALT_REF 0x00000002 ///< Enable automatic alternate reference frame generation
75 
76  int auto_alt_ref;
77 
78  int arnr_max_frames;
79  int arnr_strength;
80  int arnr_type;
81 
82  int lag_in_frames;
83  int error_resilient;
84  int crf;
85  int max_intra_rate;
86 } VP8Context;
87 
88 /** String mappings for enum vp8e_enc_control_id */
89 static const char *const ctlidstr[] = {
90  [VP8E_UPD_ENTROPY] = "VP8E_UPD_ENTROPY",
91  [VP8E_UPD_REFERENCE] = "VP8E_UPD_REFERENCE",
92  [VP8E_USE_REFERENCE] = "VP8E_USE_REFERENCE",
93  [VP8E_SET_ROI_MAP] = "VP8E_SET_ROI_MAP",
94  [VP8E_SET_ACTIVEMAP] = "VP8E_SET_ACTIVEMAP",
95  [VP8E_SET_SCALEMODE] = "VP8E_SET_SCALEMODE",
96  [VP8E_SET_CPUUSED] = "VP8E_SET_CPUUSED",
97  [VP8E_SET_ENABLEAUTOALTREF] = "VP8E_SET_ENABLEAUTOALTREF",
98  [VP8E_SET_NOISE_SENSITIVITY] = "VP8E_SET_NOISE_SENSITIVITY",
99  [VP8E_SET_SHARPNESS] = "VP8E_SET_SHARPNESS",
100  [VP8E_SET_STATIC_THRESHOLD] = "VP8E_SET_STATIC_THRESHOLD",
101  [VP8E_SET_TOKEN_PARTITIONS] = "VP8E_SET_TOKEN_PARTITIONS",
102  [VP8E_GET_LAST_QUANTIZER] = "VP8E_GET_LAST_QUANTIZER",
103  [VP8E_SET_ARNR_MAXFRAMES] = "VP8E_SET_ARNR_MAXFRAMES",
104  [VP8E_SET_ARNR_STRENGTH] = "VP8E_SET_ARNR_STRENGTH",
105  [VP8E_SET_ARNR_TYPE] = "VP8E_SET_ARNR_TYPE",
106  [VP8E_SET_CQ_LEVEL] = "VP8E_SET_CQ_LEVEL",
107  [VP8E_SET_MAX_INTRA_BITRATE_PCT] = "VP8E_SET_MAX_INTRA_BITRATE_PCT",
108 };
109 
110 static av_cold void log_encoder_error(AVCodecContext *avctx, const char *desc)
111 {
112  VP8Context *ctx = avctx->priv_data;
113  const char *error = vpx_codec_error(&ctx->encoder);
114  const char *detail = vpx_codec_error_detail(&ctx->encoder);
115 
116  av_log(avctx, AV_LOG_ERROR, "%s: %s\n", desc, error);
117  if (detail)
118  av_log(avctx, AV_LOG_ERROR, " Additional information: %s\n", detail);
119 }
120 
121 static av_cold void dump_enc_cfg(AVCodecContext *avctx,
122  const struct vpx_codec_enc_cfg *cfg)
123 {
124  int width = -30;
125  int level = AV_LOG_DEBUG;
126 
127  av_log(avctx, level, "vpx_codec_enc_cfg\n");
128  av_log(avctx, level, "generic settings\n"
129  " %*s%u\n %*s%u\n %*s%u\n %*s%u\n %*s%u\n"
130  " %*s{%u/%u}\n %*s%u\n %*s%d\n %*s%u\n",
131  width, "g_usage:", cfg->g_usage,
132  width, "g_threads:", cfg->g_threads,
133  width, "g_profile:", cfg->g_profile,
134  width, "g_w:", cfg->g_w,
135  width, "g_h:", cfg->g_h,
136  width, "g_timebase:", cfg->g_timebase.num, cfg->g_timebase.den,
137  width, "g_error_resilient:", cfg->g_error_resilient,
138  width, "g_pass:", cfg->g_pass,
139  width, "g_lag_in_frames:", cfg->g_lag_in_frames);
140  av_log(avctx, level, "rate control settings\n"
141  " %*s%u\n %*s%u\n %*s%u\n %*s%u\n"
142  " %*s%d\n %*s%p(%zu)\n %*s%u\n",
143  width, "rc_dropframe_thresh:", cfg->rc_dropframe_thresh,
144  width, "rc_resize_allowed:", cfg->rc_resize_allowed,
145  width, "rc_resize_up_thresh:", cfg->rc_resize_up_thresh,
146  width, "rc_resize_down_thresh:", cfg->rc_resize_down_thresh,
147  width, "rc_end_usage:", cfg->rc_end_usage,
148  width, "rc_twopass_stats_in:", cfg->rc_twopass_stats_in.buf, cfg->rc_twopass_stats_in.sz,
149  width, "rc_target_bitrate:", cfg->rc_target_bitrate);
150  av_log(avctx, level, "quantizer settings\n"
151  " %*s%u\n %*s%u\n",
152  width, "rc_min_quantizer:", cfg->rc_min_quantizer,
153  width, "rc_max_quantizer:", cfg->rc_max_quantizer);
154  av_log(avctx, level, "bitrate tolerance\n"
155  " %*s%u\n %*s%u\n",
156  width, "rc_undershoot_pct:", cfg->rc_undershoot_pct,
157  width, "rc_overshoot_pct:", cfg->rc_overshoot_pct);
158  av_log(avctx, level, "decoder buffer model\n"
159  " %*s%u\n %*s%u\n %*s%u\n",
160  width, "rc_buf_sz:", cfg->rc_buf_sz,
161  width, "rc_buf_initial_sz:", cfg->rc_buf_initial_sz,
162  width, "rc_buf_optimal_sz:", cfg->rc_buf_optimal_sz);
163  av_log(avctx, level, "2 pass rate control settings\n"
164  " %*s%u\n %*s%u\n %*s%u\n",
165  width, "rc_2pass_vbr_bias_pct:", cfg->rc_2pass_vbr_bias_pct,
166  width, "rc_2pass_vbr_minsection_pct:", cfg->rc_2pass_vbr_minsection_pct,
167  width, "rc_2pass_vbr_maxsection_pct:", cfg->rc_2pass_vbr_maxsection_pct);
168  av_log(avctx, level, "keyframing settings\n"
169  " %*s%d\n %*s%u\n %*s%u\n",
170  width, "kf_mode:", cfg->kf_mode,
171  width, "kf_min_dist:", cfg->kf_min_dist,
172  width, "kf_max_dist:", cfg->kf_max_dist);
173  av_log(avctx, level, "\n");
174 }
175 
176 static void coded_frame_add(void *list, struct FrameListData *cx_frame)
177 {
178  struct FrameListData **p = list;
179 
180  while (*p != NULL)
181  p = &(*p)->next;
182  *p = cx_frame;
183  cx_frame->next = NULL;
184 }
185 
186 static av_cold void free_coded_frame(struct FrameListData *cx_frame)
187 {
188  av_freep(&cx_frame->buf);
189  av_freep(&cx_frame);
190 }
191 
192 static av_cold void free_frame_list(struct FrameListData *list)
193 {
194  struct FrameListData *p = list;
195 
196  while (p) {
197  list = list->next;
198  free_coded_frame(p);
199  p = list;
200  }
201 }
202 
203 static av_cold int codecctl_int(AVCodecContext *avctx,
204  enum vp8e_enc_control_id id, int val)
205 {
206  VP8Context *ctx = avctx->priv_data;
207  char buf[80];
208  int width = -30;
209  int res;
210 
211  snprintf(buf, sizeof(buf), "%s:", ctlidstr[id]);
212  av_log(avctx, AV_LOG_DEBUG, " %*s%d\n", width, buf, val);
213 
214  res = vpx_codec_control(&ctx->encoder, id, val);
215  if (res != VPX_CODEC_OK) {
216  snprintf(buf, sizeof(buf), "Failed to set %s codec control",
217  ctlidstr[id]);
218  log_encoder_error(avctx, buf);
219  }
220 
221  return res == VPX_CODEC_OK ? 0 : AVERROR(EINVAL);
222 }
223 
224 static av_cold int vp8_free(AVCodecContext *avctx)
225 {
226  VP8Context *ctx = avctx->priv_data;
227 
228  vpx_codec_destroy(&ctx->encoder);
229  av_freep(&ctx->twopass_stats.buf);
230  av_freep(&avctx->coded_frame);
231  av_freep(&avctx->stats_out);
232  free_frame_list(ctx->coded_frame_list);
233  return 0;
234 }
235 
236 static av_cold int vpx_init(AVCodecContext *avctx,
237  const struct vpx_codec_iface *iface)
238 {
239  VP8Context *ctx = avctx->priv_data;
240  struct vpx_codec_enc_cfg enccfg;
241  vpx_codec_flags_t flags = (avctx->flags & CODEC_FLAG_PSNR) ? VPX_CODEC_USE_PSNR : 0;
242  int res;
243 
244  av_log(avctx, AV_LOG_INFO, "%s\n", vpx_codec_version_str());
245  av_log(avctx, AV_LOG_VERBOSE, "%s\n", vpx_codec_build_config());
246 
247  if ((res = vpx_codec_enc_config_default(iface, &enccfg, 0)) != VPX_CODEC_OK) {
248  av_log(avctx, AV_LOG_ERROR, "Failed to get config: %s\n",
249  vpx_codec_err_to_string(res));
250  return AVERROR(EINVAL);
251  }
252 
253  if(!avctx->bit_rate)
254  if(avctx->rc_max_rate || avctx->rc_buffer_size || avctx->rc_initial_buffer_occupancy) {
255  av_log( avctx, AV_LOG_ERROR, "Rate control parameters set without a bitrate\n");
256  return AVERROR(EINVAL);
257  }
258 
259  dump_enc_cfg(avctx, &enccfg);
260 
261  enccfg.g_w = avctx->width;
262  enccfg.g_h = avctx->height;
263  enccfg.g_timebase.num = avctx->time_base.num;
264  enccfg.g_timebase.den = avctx->time_base.den;
265  enccfg.g_threads = avctx->thread_count;
266  enccfg.g_lag_in_frames= ctx->lag_in_frames;
267 
268  if (avctx->flags & CODEC_FLAG_PASS1)
269  enccfg.g_pass = VPX_RC_FIRST_PASS;
270  else if (avctx->flags & CODEC_FLAG_PASS2)
271  enccfg.g_pass = VPX_RC_LAST_PASS;
272  else
273  enccfg.g_pass = VPX_RC_ONE_PASS;
274 
275  if (avctx->rc_min_rate == avctx->rc_max_rate &&
276  avctx->rc_min_rate == avctx->bit_rate && avctx->bit_rate)
277  enccfg.rc_end_usage = VPX_CBR;
278  else if (ctx->crf)
279  enccfg.rc_end_usage = VPX_CQ;
280 
281  if (avctx->bit_rate) {
282  enccfg.rc_target_bitrate = av_rescale_rnd(avctx->bit_rate, 1, 1000,
283  AV_ROUND_NEAR_INF);
284  } else {
285  if (enccfg.rc_end_usage == VPX_CQ) {
286  enccfg.rc_target_bitrate = 1000000;
287  } else {
288  avctx->bit_rate = enccfg.rc_target_bitrate * 1000;
289  av_log(avctx, AV_LOG_WARNING,
290  "Neither bitrate nor constrained quality specified, using default bitrate of %dkbit/sec\n",
291  enccfg.rc_target_bitrate);
292  }
293  }
294 
295  if (avctx->qmin >= 0)
296  enccfg.rc_min_quantizer = avctx->qmin;
297  if (avctx->qmax > 0)
298  enccfg.rc_max_quantizer = avctx->qmax;
299 
300  if (enccfg.rc_end_usage == VPX_CQ) {
301  if (ctx->crf < enccfg.rc_min_quantizer || ctx->crf > enccfg.rc_max_quantizer) {
302  av_log(avctx, AV_LOG_ERROR,
303  "CQ level must be between minimum and maximum quantizer value (%d-%d)\n",
304  enccfg.rc_min_quantizer, enccfg.rc_max_quantizer);
305  return AVERROR(EINVAL);
306  }
307  }
308 
309  enccfg.rc_dropframe_thresh = avctx->frame_skip_threshold;
310 
311  //0-100 (0 => CBR, 100 => VBR)
312  enccfg.rc_2pass_vbr_bias_pct = round(avctx->qcompress * 100);
313  if (avctx->bit_rate)
314  enccfg.rc_2pass_vbr_minsection_pct =
315  avctx->rc_min_rate * 100LL / avctx->bit_rate;
316  if (avctx->rc_max_rate)
317  enccfg.rc_2pass_vbr_maxsection_pct =
318  avctx->rc_max_rate * 100LL / avctx->bit_rate;
319 
320  if (avctx->rc_buffer_size)
321  enccfg.rc_buf_sz =
322  avctx->rc_buffer_size * 1000LL / avctx->bit_rate;
323  if (avctx->rc_initial_buffer_occupancy)
324  enccfg.rc_buf_initial_sz =
325  avctx->rc_initial_buffer_occupancy * 1000LL / avctx->bit_rate;
326  enccfg.rc_buf_optimal_sz = enccfg.rc_buf_sz * 5 / 6;
327  enccfg.rc_undershoot_pct = round(avctx->rc_buffer_aggressivity * 100);
328 
329  //_enc_init() will balk if kf_min_dist differs from max w/VPX_KF_AUTO
330  if (avctx->keyint_min >= 0 && avctx->keyint_min == avctx->gop_size)
331  enccfg.kf_min_dist = avctx->keyint_min;
332  if (avctx->gop_size >= 0)
333  enccfg.kf_max_dist = avctx->gop_size;
334 
335  if (enccfg.g_pass == VPX_RC_FIRST_PASS)
336  enccfg.g_lag_in_frames = 0;
337  else if (enccfg.g_pass == VPX_RC_LAST_PASS) {
338  int decode_size;
339 
340  if (!avctx->stats_in) {
341  av_log(avctx, AV_LOG_ERROR, "No stats file for second pass\n");
342  return AVERROR_INVALIDDATA;
343  }
344 
345  ctx->twopass_stats.sz = strlen(avctx->stats_in) * 3 / 4;
346  ctx->twopass_stats.buf = av_malloc(ctx->twopass_stats.sz);
347  if (!ctx->twopass_stats.buf) {
348  av_log(avctx, AV_LOG_ERROR,
349  "Stat buffer alloc (%zu bytes) failed\n",
350  ctx->twopass_stats.sz);
351  return AVERROR(ENOMEM);
352  }
353  decode_size = av_base64_decode(ctx->twopass_stats.buf, avctx->stats_in,
354  ctx->twopass_stats.sz);
355  if (decode_size < 0) {
356  av_log(avctx, AV_LOG_ERROR, "Stat buffer decode failed\n");
357  return AVERROR_INVALIDDATA;
358  }
359 
360  ctx->twopass_stats.sz = decode_size;
361  enccfg.rc_twopass_stats_in = ctx->twopass_stats;
362  }
363 
364  /* 0-3: For non-zero values the encoder increasingly optimizes for reduced
365  complexity playback on low powered devices at the expense of encode
366  quality. */
367  if (avctx->profile != FF_PROFILE_UNKNOWN)
368  enccfg.g_profile = avctx->profile;
369 
370  enccfg.g_error_resilient = ctx->error_resilient || ctx->flags & VP8F_ERROR_RESILIENT;
371 
372  dump_enc_cfg(avctx, &enccfg);
373  /* Construct Encoder Context */
374  res = vpx_codec_enc_init(&ctx->encoder, iface, &enccfg, flags);
375  if (res != VPX_CODEC_OK) {
376  log_encoder_error(avctx, "Failed to initialize encoder");
377  return AVERROR(EINVAL);
378  }
379 
380  //codec control failures are currently treated only as warnings
381  av_log(avctx, AV_LOG_DEBUG, "vpx_codec_control\n");
382  if (ctx->cpu_used != INT_MIN)
383  codecctl_int(avctx, VP8E_SET_CPUUSED, ctx->cpu_used);
384  if (ctx->flags & VP8F_AUTO_ALT_REF)
385  ctx->auto_alt_ref = 1;
386  if (ctx->auto_alt_ref >= 0)
387  codecctl_int(avctx, VP8E_SET_ENABLEAUTOALTREF, ctx->auto_alt_ref);
388  if (ctx->arnr_max_frames >= 0)
389  codecctl_int(avctx, VP8E_SET_ARNR_MAXFRAMES, ctx->arnr_max_frames);
390  if (ctx->arnr_strength >= 0)
391  codecctl_int(avctx, VP8E_SET_ARNR_STRENGTH, ctx->arnr_strength);
392  if (ctx->arnr_type >= 0)
393  codecctl_int(avctx, VP8E_SET_ARNR_TYPE, ctx->arnr_type);
394  codecctl_int(avctx, VP8E_SET_NOISE_SENSITIVITY, avctx->noise_reduction);
395  codecctl_int(avctx, VP8E_SET_TOKEN_PARTITIONS, av_log2(avctx->slices));
396  codecctl_int(avctx, VP8E_SET_STATIC_THRESHOLD, avctx->mb_threshold);
397  codecctl_int(avctx, VP8E_SET_CQ_LEVEL, ctx->crf);
398  if (ctx->max_intra_rate >= 0)
399  codecctl_int(avctx, VP8E_SET_MAX_INTRA_BITRATE_PCT, ctx->max_intra_rate);
400 
401  av_log(avctx, AV_LOG_DEBUG, "Using deadline: %d\n", ctx->deadline);
402 
403  //provide dummy value to initialize wrapper, values will be updated each _encode()
404  vpx_img_wrap(&ctx->rawimg, VPX_IMG_FMT_I420, avctx->width, avctx->height, 1,
405  (unsigned char*)1);
406 
407  avctx->coded_frame = avcodec_alloc_frame();
408  if (!avctx->coded_frame) {
409  av_log(avctx, AV_LOG_ERROR, "Error allocating coded frame\n");
410  vp8_free(avctx);
411  return AVERROR(ENOMEM);
412  }
413  return 0;
414 }
415 
416 static inline void cx_pktcpy(struct FrameListData *dst,
417  const struct vpx_codec_cx_pkt *src,
418  VP8Context *ctx)
419 {
420  dst->pts = src->data.frame.pts;
421  dst->duration = src->data.frame.duration;
422  dst->flags = src->data.frame.flags;
423  dst->sz = src->data.frame.sz;
424  dst->buf = src->data.frame.buf;
425  dst->have_sse = 0;
426  /* For alt-ref frame, don't store PSNR or increment frame_number */
427  if (!(dst->flags & VPX_FRAME_IS_INVISIBLE)) {
428  dst->frame_number = ++ctx->frame_number;
429  dst->have_sse = ctx->have_sse;
430  if (ctx->have_sse) {
431  /* associate last-seen SSE to the frame. */
432  /* Transfers ownership from ctx to dst. */
433  /* WARNING! This makes the assumption that PSNR_PKT comes
434  just before the frame it refers to! */
435  memcpy(dst->sse, ctx->sse, sizeof(dst->sse));
436  ctx->have_sse = 0;
437  }
438  } else {
439  dst->frame_number = -1; /* sanity marker */
440  }
441 }
442 
443 /**
444  * Store coded frame information in format suitable for return from encode2().
445  *
446  * Write information from @a cx_frame to @a pkt
447  * @return packet data size on success
448  * @return a negative AVERROR on error
449  */
450 static int storeframe(AVCodecContext *avctx, struct FrameListData *cx_frame,
451  AVPacket *pkt, AVFrame *coded_frame)
452 {
453  int ret = ff_alloc_packet2(avctx, pkt, cx_frame->sz);
454  if (ret >= 0) {
455  memcpy(pkt->data, cx_frame->buf, pkt->size);
456  pkt->pts = pkt->dts = cx_frame->pts;
457  coded_frame->pts = cx_frame->pts;
458  coded_frame->key_frame = !!(cx_frame->flags & VPX_FRAME_IS_KEY);
459 
460  if (coded_frame->key_frame) {
461  coded_frame->pict_type = AV_PICTURE_TYPE_I;
462  pkt->flags |= AV_PKT_FLAG_KEY;
463  } else
464  coded_frame->pict_type = AV_PICTURE_TYPE_P;
465 
466  if (cx_frame->have_sse) {
467  int i;
468  /* Beware of the Y/U/V/all order! */
469  coded_frame->error[0] = cx_frame->sse[1];
470  coded_frame->error[1] = cx_frame->sse[2];
471  coded_frame->error[2] = cx_frame->sse[3];
472  coded_frame->error[3] = 0; // alpha
473  for (i = 0; i < 4; ++i) {
474  avctx->error[i] += coded_frame->error[i];
475  }
476  cx_frame->have_sse = 0;
477  }
478  } else {
479  return ret;
480  }
481  return pkt->size;
482 }
483 
484 /**
485  * Queue multiple output frames from the encoder, returning the front-most.
486  * In cases where vpx_codec_get_cx_data() returns more than 1 frame append
487  * the frame queue. Return the head frame if available.
488  * @return Stored frame size
489  * @return AVERROR(EINVAL) on output size error
490  * @return AVERROR(ENOMEM) on coded frame queue data allocation error
491  */
492 static int queue_frames(AVCodecContext *avctx, AVPacket *pkt_out,
493  AVFrame *coded_frame)
494 {
495  VP8Context *ctx = avctx->priv_data;
496  const struct vpx_codec_cx_pkt *pkt;
497  const void *iter = NULL;
498  int size = 0;
499 
500  if (ctx->coded_frame_list) {
501  struct FrameListData *cx_frame = ctx->coded_frame_list;
502  /* return the leading frame if we've already begun queueing */
503  size = storeframe(avctx, cx_frame, pkt_out, coded_frame);
504  if (size < 0)
505  return size;
506  ctx->coded_frame_list = cx_frame->next;
507  free_coded_frame(cx_frame);
508  }
509 
510  /* consume all available output from the encoder before returning. buffers
511  are only good through the next vpx_codec call */
512  while ((pkt = vpx_codec_get_cx_data(&ctx->encoder, &iter))) {
513  switch (pkt->kind) {
514  case VPX_CODEC_CX_FRAME_PKT:
515  if (!size) {
516  struct FrameListData cx_frame;
517 
518  /* avoid storing the frame when the list is empty and we haven't yet
519  provided a frame for output */
520  av_assert0(!ctx->coded_frame_list);
521  cx_pktcpy(&cx_frame, pkt, ctx);
522  size = storeframe(avctx, &cx_frame, pkt_out, coded_frame);
523  if (size < 0)
524  return size;
525  } else {
526  struct FrameListData *cx_frame =
527  av_malloc(sizeof(struct FrameListData));
528 
529  if (!cx_frame) {
530  av_log(avctx, AV_LOG_ERROR,
531  "Frame queue element alloc failed\n");
532  return AVERROR(ENOMEM);
533  }
534  cx_pktcpy(cx_frame, pkt, ctx);
535  cx_frame->buf = av_malloc(cx_frame->sz);
536 
537  if (!cx_frame->buf) {
538  av_log(avctx, AV_LOG_ERROR,
539  "Data buffer alloc (%zu bytes) failed\n",
540  cx_frame->sz);
541  av_free(cx_frame);
542  return AVERROR(ENOMEM);
543  }
544  memcpy(cx_frame->buf, pkt->data.frame.buf, pkt->data.frame.sz);
545  coded_frame_add(&ctx->coded_frame_list, cx_frame);
546  }
547  break;
548  case VPX_CODEC_STATS_PKT: {
549  struct vpx_fixed_buf *stats = &ctx->twopass_stats;
550  stats->buf = av_realloc_f(stats->buf, 1,
551  stats->sz + pkt->data.twopass_stats.sz);
552  if (!stats->buf) {
553  av_log(avctx, AV_LOG_ERROR, "Stat buffer realloc failed\n");
554  return AVERROR(ENOMEM);
555  }
556  memcpy((uint8_t*)stats->buf + stats->sz,
557  pkt->data.twopass_stats.buf, pkt->data.twopass_stats.sz);
558  stats->sz += pkt->data.twopass_stats.sz;
559  break;
560  }
561  case VPX_CODEC_PSNR_PKT:
562  av_assert0(!ctx->have_sse);
563  ctx->sse[0] = pkt->data.psnr.sse[0];
564  ctx->sse[1] = pkt->data.psnr.sse[1];
565  ctx->sse[2] = pkt->data.psnr.sse[2];
566  ctx->sse[3] = pkt->data.psnr.sse[3];
567  ctx->have_sse = 1;
568  break;
569  case VPX_CODEC_CUSTOM_PKT:
570  //ignore unsupported/unrecognized packet types
571  break;
572  }
573  }
574 
575  return size;
576 }
577 
578 static int vp8_encode(AVCodecContext *avctx, AVPacket *pkt,
579  const AVFrame *frame, int *got_packet)
580 {
581  VP8Context *ctx = avctx->priv_data;
582  struct vpx_image *rawimg = NULL;
583  int64_t timestamp = 0;
584  int res, coded_size;
585  vpx_enc_frame_flags_t flags = 0;
586 
587  if (frame) {
588  rawimg = &ctx->rawimg;
589  rawimg->planes[VPX_PLANE_Y] = frame->data[0];
590  rawimg->planes[VPX_PLANE_U] = frame->data[1];
591  rawimg->planes[VPX_PLANE_V] = frame->data[2];
592  rawimg->stride[VPX_PLANE_Y] = frame->linesize[0];
593  rawimg->stride[VPX_PLANE_U] = frame->linesize[1];
594  rawimg->stride[VPX_PLANE_V] = frame->linesize[2];
595  timestamp = frame->pts;
596  if (frame->pict_type == AV_PICTURE_TYPE_I)
597  flags |= VPX_EFLAG_FORCE_KF;
598  }
599 
600  res = vpx_codec_encode(&ctx->encoder, rawimg, timestamp,
601  avctx->ticks_per_frame, flags, ctx->deadline);
602  if (res != VPX_CODEC_OK) {
603  log_encoder_error(avctx, "Error encoding frame");
604  return AVERROR_INVALIDDATA;
605  }
606  coded_size = queue_frames(avctx, pkt, avctx->coded_frame);
607 
608  if (!frame && avctx->flags & CODEC_FLAG_PASS1) {
609  unsigned int b64_size = AV_BASE64_SIZE(ctx->twopass_stats.sz);
610 
611  avctx->stats_out = av_malloc(b64_size);
612  if (!avctx->stats_out) {
613  av_log(avctx, AV_LOG_ERROR, "Stat buffer alloc (%d bytes) failed\n",
614  b64_size);
615  return AVERROR(ENOMEM);
616  }
617  av_base64_encode(avctx->stats_out, b64_size, ctx->twopass_stats.buf,
618  ctx->twopass_stats.sz);
619  }
620 
621  *got_packet = !!coded_size;
622  return 0;
623 }
624 
625 #define OFFSET(x) offsetof(VP8Context, x)
626 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
627 static const AVOption options[] = {
628  { "cpu-used", "Quality/Speed ratio modifier", OFFSET(cpu_used), AV_OPT_TYPE_INT, {.i64 = INT_MIN}, INT_MIN, INT_MAX, VE},
629  { "auto-alt-ref", "Enable use of alternate reference "
630  "frames (2-pass only)", OFFSET(auto_alt_ref), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 1, VE},
631  { "lag-in-frames", "Number of frames to look ahead for "
632  "alternate reference frame selection", OFFSET(lag_in_frames), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, VE},
633  { "arnr-maxframes", "altref noise reduction max frame count", OFFSET(arnr_max_frames), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, VE},
634  { "arnr-strength", "altref noise reduction filter strength", OFFSET(arnr_strength), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, VE},
635  { "arnr-type", "altref noise reduction filter type", OFFSET(arnr_type), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, VE, "arnr_type"},
636  { "backward", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = 1}, 0, 0, VE, "arnr_type" },
637  { "forward", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = 2}, 0, 0, VE, "arnr_type" },
638  { "centered", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = 3}, 0, 0, VE, "arnr_type" },
639  { "deadline", "Time to spend encoding, in microseconds.", OFFSET(deadline), AV_OPT_TYPE_INT, {.i64 = VPX_DL_GOOD_QUALITY}, INT_MIN, INT_MAX, VE, "quality"},
640  { "best", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = VPX_DL_BEST_QUALITY}, 0, 0, VE, "quality"},
641  { "good", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = VPX_DL_GOOD_QUALITY}, 0, 0, VE, "quality"},
642  { "realtime", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = VPX_DL_REALTIME}, 0, 0, VE, "quality"},
643  { "error-resilient", "Error resilience configuration", OFFSET(error_resilient), AV_OPT_TYPE_FLAGS, {.i64 = 0}, INT_MIN, INT_MAX, VE, "er"},
644  { "max-intra-rate", "Maximum I-frame bitrate (pct) 0=unlimited", OFFSET(max_intra_rate), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, VE},
645 #ifdef VPX_ERROR_RESILIENT_DEFAULT
646  { "default", "Improve resiliency against losses of whole frames", 0, AV_OPT_TYPE_CONST, {.i64 = VPX_ERROR_RESILIENT_DEFAULT}, 0, 0, VE, "er"},
647  { "partitions", "The frame partitions are independently decodable "
648  "by the bool decoder, meaning that partitions can be decoded even "
649  "though earlier partitions have been lost. Note that intra predicition"
650  " is still done over the partition boundary.", 0, AV_OPT_TYPE_CONST, {.i64 = VPX_ERROR_RESILIENT_PARTITIONS}, 0, 0, VE, "er"},
651 #endif
652 {"speed", "", offsetof(VP8Context, cpu_used), AV_OPT_TYPE_INT, {.i64 = 3}, -16, 16, VE},
653 {"quality", "", offsetof(VP8Context, deadline), AV_OPT_TYPE_INT, {.i64 = VPX_DL_GOOD_QUALITY}, INT_MIN, INT_MAX, VE, "quality"},
654 {"vp8flags", "", offsetof(VP8Context, flags), FF_OPT_TYPE_FLAGS, {.i64 = 0}, 0, UINT_MAX, VE, "flags"},
655 {"error_resilient", "enable error resilience", 0, FF_OPT_TYPE_CONST, {.dbl = VP8F_ERROR_RESILIENT}, INT_MIN, INT_MAX, VE, "flags"},
656 {"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"},
657 {"arnr_max_frames", "altref noise reduction max frame count", offsetof(VP8Context, arnr_max_frames), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 15, VE},
658 {"arnr_strength", "altref noise reduction filter strength", offsetof(VP8Context, arnr_strength), AV_OPT_TYPE_INT, {.i64 = 3}, 0, 6, VE},
659 {"arnr_type", "altref noise reduction filter type", offsetof(VP8Context, arnr_type), AV_OPT_TYPE_INT, {.i64 = 3}, 1, 3, VE},
660 {"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},
661  { "crf", "Select the quality for constant quality mode", offsetof(VP8Context, crf), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 63, VE },
662  { NULL }
663 };
664 
665 static const AVCodecDefault defaults[] = {
666  { "qmin", "-1" },
667  { "qmax", "-1" },
668  { "g", "-1" },
669  { "keyint_min", "-1" },
670  { NULL },
671 };
672 
673 #if CONFIG_LIBVPX_VP8_ENCODER
674 static av_cold int vp8_init(AVCodecContext *avctx)
675 {
676  return vpx_init(avctx, &vpx_codec_vp8_cx_algo);
677 }
678 
679 static const AVClass class_vp8 = {
680  .class_name = "libvpx encoder",
681  .item_name = av_default_item_name,
682  .option = options,
683  .version = LIBAVUTIL_VERSION_INT,
684 };
685 
686 AVCodec ff_libvpx_vp8_encoder = {
687  .name = "libvpx",
688  .type = AVMEDIA_TYPE_VIDEO,
689  .id = AV_CODEC_ID_VP8,
690  .priv_data_size = sizeof(VP8Context),
691  .init = vp8_init,
692  .encode2 = vp8_encode,
693  .close = vp8_free,
694  .capabilities = CODEC_CAP_DELAY | CODEC_CAP_AUTO_THREADS,
695  .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
696  .long_name = NULL_IF_CONFIG_SMALL("libvpx VP8"),
697  .priv_class = &class_vp8,
698  .defaults = defaults,
699 };
700 #endif /* CONFIG_LIBVPX_VP8_ENCODER */
701 
702 #if CONFIG_LIBVPX_VP9_ENCODER
703 static av_cold int vp9_init(AVCodecContext *avctx)
704 {
705  return vpx_init(avctx, &vpx_codec_vp9_cx_algo);
706 }
707 
708 static const AVClass class_vp9 = {
709  .class_name = "libvpx encoder",
710  .item_name = av_default_item_name,
711  .option = options,
712  .version = LIBAVUTIL_VERSION_INT,
713 };
714 
715 AVCodec ff_libvpx_vp9_encoder = {
716  .name = "libvpx-vp9",
717  .type = AVMEDIA_TYPE_VIDEO,
718  .id = AV_CODEC_ID_VP9,
719  .priv_data_size = sizeof(VP8Context),
720  .init = vp9_init,
721  .encode2 = vp8_encode,
722  .close = vp8_free,
723  .capabilities = CODEC_CAP_DELAY | CODEC_CAP_AUTO_THREADS | CODEC_CAP_EXPERIMENTAL,
724  .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
725  .long_name = NULL_IF_CONFIG_SMALL("libvpx VP9"),
726  .priv_class = &class_vp9,
727  .defaults = defaults,
728 };
729 #endif /* CONFIG_LIBVPX_VP9_ENCODER */
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