FFmpeg
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
libvpxenc.c
Go to the documentation of this file.
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 "libvpx.h"
35 #include "libavutil/base64.h"
36 #include "libavutil/common.h"
37 #include "libavutil/intreadwrite.h"
38 #include "libavutil/mathematics.h"
39 #include "libavutil/opt.h"
40 
41 /**
42  * Portion of struct vpx_codec_cx_pkt from vpx_encoder.h.
43  * One encoded frame returned from the library.
44  */
45 struct FrameListData {
46  void *buf; /**< compressed data buffer */
47  size_t sz; /**< length of compressed data */
48  void *buf_alpha;
49  size_t sz_alpha;
50  int64_t pts; /**< time stamp to show frame
51  (in timebase units) */
52  unsigned long duration; /**< duration to show frame
53  (in timebase units) */
54  uint32_t flags; /**< flags for this frame */
55  uint64_t sse[4];
56  int have_sse; /**< true if we have pending sse[] */
57  uint64_t frame_number;
58  struct FrameListData *next;
59 };
60 
61 typedef struct VP8EncoderContext {
62  AVClass *class;
63  struct vpx_codec_ctx encoder;
64  struct vpx_image rawimg;
65  struct vpx_codec_ctx encoder_alpha;
66  struct vpx_image rawimg_alpha;
67  uint8_t is_alpha;
68  struct vpx_fixed_buf twopass_stats;
69  int deadline; //i.e., RT/GOOD/BEST
70  uint64_t sse[4];
71  int have_sse; /**< true if we have pending sse[] */
72  uint64_t frame_number;
73  struct FrameListData *coded_frame_list;
74 
75  int cpu_used;
76  /**
77  * VP8 specific flags, see VP8F_* below.
78  */
79  int flags;
80 #define VP8F_ERROR_RESILIENT 0x00000001 ///< Enable measures appropriate for streaming over lossy links
81 #define VP8F_AUTO_ALT_REF 0x00000002 ///< Enable automatic alternate reference frame generation
82 
83  int auto_alt_ref;
84 
85  int arnr_max_frames;
86  int arnr_strength;
87  int arnr_type;
88 
89  int lag_in_frames;
90  int error_resilient;
91  int crf;
92  int max_intra_rate;
93 
94  // VP9-only
95  int lossless;
96  int tile_columns;
97  int tile_rows;
98  int frame_parallel;
99  int aq_mode;
100 } VP8Context;
101 
102 /** String mappings for enum vp8e_enc_control_id */
103 static const char *const ctlidstr[] = {
104  [VP8E_UPD_ENTROPY] = "VP8E_UPD_ENTROPY",
105  [VP8E_UPD_REFERENCE] = "VP8E_UPD_REFERENCE",
106  [VP8E_USE_REFERENCE] = "VP8E_USE_REFERENCE",
107  [VP8E_SET_ROI_MAP] = "VP8E_SET_ROI_MAP",
108  [VP8E_SET_ACTIVEMAP] = "VP8E_SET_ACTIVEMAP",
109  [VP8E_SET_SCALEMODE] = "VP8E_SET_SCALEMODE",
110  [VP8E_SET_CPUUSED] = "VP8E_SET_CPUUSED",
111  [VP8E_SET_ENABLEAUTOALTREF] = "VP8E_SET_ENABLEAUTOALTREF",
112  [VP8E_SET_NOISE_SENSITIVITY] = "VP8E_SET_NOISE_SENSITIVITY",
113  [VP8E_SET_SHARPNESS] = "VP8E_SET_SHARPNESS",
114  [VP8E_SET_STATIC_THRESHOLD] = "VP8E_SET_STATIC_THRESHOLD",
115  [VP8E_SET_TOKEN_PARTITIONS] = "VP8E_SET_TOKEN_PARTITIONS",
116  [VP8E_GET_LAST_QUANTIZER] = "VP8E_GET_LAST_QUANTIZER",
117  [VP8E_SET_ARNR_MAXFRAMES] = "VP8E_SET_ARNR_MAXFRAMES",
118  [VP8E_SET_ARNR_STRENGTH] = "VP8E_SET_ARNR_STRENGTH",
119  [VP8E_SET_ARNR_TYPE] = "VP8E_SET_ARNR_TYPE",
120  [VP8E_SET_CQ_LEVEL] = "VP8E_SET_CQ_LEVEL",
121  [VP8E_SET_MAX_INTRA_BITRATE_PCT] = "VP8E_SET_MAX_INTRA_BITRATE_PCT",
122 #if CONFIG_LIBVPX_VP9_ENCODER
123  [VP9E_SET_LOSSLESS] = "VP9E_SET_LOSSLESS",
124  [VP9E_SET_TILE_COLUMNS] = "VP9E_SET_TILE_COLUMNS",
125  [VP9E_SET_TILE_ROWS] = "VP9E_SET_TILE_ROWS",
126  [VP9E_SET_FRAME_PARALLEL_DECODING] = "VP9E_SET_FRAME_PARALLEL_DECODING",
127  [VP9E_SET_AQ_MODE] = "VP9E_SET_AQ_MODE",
128 #endif
129 };
130 
131 static av_cold void log_encoder_error(AVCodecContext *avctx, const char *desc)
132 {
133  VP8Context *ctx = avctx->priv_data;
134  const char *error = vpx_codec_error(&ctx->encoder);
135  const char *detail = vpx_codec_error_detail(&ctx->encoder);
136 
137  av_log(avctx, AV_LOG_ERROR, "%s: %s\n", desc, error);
138  if (detail)
139  av_log(avctx, AV_LOG_ERROR, " Additional information: %s\n", detail);
140 }
141 
142 static av_cold void dump_enc_cfg(AVCodecContext *avctx,
143  const struct vpx_codec_enc_cfg *cfg)
144 {
145  int width = -30;
146  int level = AV_LOG_DEBUG;
147 
148  av_log(avctx, level, "vpx_codec_enc_cfg\n");
149  av_log(avctx, level, "generic settings\n"
150  " %*s%u\n %*s%u\n %*s%u\n %*s%u\n %*s%u\n"
151  " %*s{%u/%u}\n %*s%u\n %*s%d\n %*s%u\n",
152  width, "g_usage:", cfg->g_usage,
153  width, "g_threads:", cfg->g_threads,
154  width, "g_profile:", cfg->g_profile,
155  width, "g_w:", cfg->g_w,
156  width, "g_h:", cfg->g_h,
157  width, "g_timebase:", cfg->g_timebase.num, cfg->g_timebase.den,
158  width, "g_error_resilient:", cfg->g_error_resilient,
159  width, "g_pass:", cfg->g_pass,
160  width, "g_lag_in_frames:", cfg->g_lag_in_frames);
161  av_log(avctx, level, "rate control settings\n"
162  " %*s%u\n %*s%u\n %*s%u\n %*s%u\n"
163  " %*s%d\n %*s%p(%"SIZE_SPECIFIER")\n %*s%u\n",
164  width, "rc_dropframe_thresh:", cfg->rc_dropframe_thresh,
165  width, "rc_resize_allowed:", cfg->rc_resize_allowed,
166  width, "rc_resize_up_thresh:", cfg->rc_resize_up_thresh,
167  width, "rc_resize_down_thresh:", cfg->rc_resize_down_thresh,
168  width, "rc_end_usage:", cfg->rc_end_usage,
169  width, "rc_twopass_stats_in:", cfg->rc_twopass_stats_in.buf, cfg->rc_twopass_stats_in.sz,
170  width, "rc_target_bitrate:", cfg->rc_target_bitrate);
171  av_log(avctx, level, "quantizer settings\n"
172  " %*s%u\n %*s%u\n",
173  width, "rc_min_quantizer:", cfg->rc_min_quantizer,
174  width, "rc_max_quantizer:", cfg->rc_max_quantizer);
175  av_log(avctx, level, "bitrate tolerance\n"
176  " %*s%u\n %*s%u\n",
177  width, "rc_undershoot_pct:", cfg->rc_undershoot_pct,
178  width, "rc_overshoot_pct:", cfg->rc_overshoot_pct);
179  av_log(avctx, level, "decoder buffer model\n"
180  " %*s%u\n %*s%u\n %*s%u\n",
181  width, "rc_buf_sz:", cfg->rc_buf_sz,
182  width, "rc_buf_initial_sz:", cfg->rc_buf_initial_sz,
183  width, "rc_buf_optimal_sz:", cfg->rc_buf_optimal_sz);
184  av_log(avctx, level, "2 pass rate control settings\n"
185  " %*s%u\n %*s%u\n %*s%u\n",
186  width, "rc_2pass_vbr_bias_pct:", cfg->rc_2pass_vbr_bias_pct,
187  width, "rc_2pass_vbr_minsection_pct:", cfg->rc_2pass_vbr_minsection_pct,
188  width, "rc_2pass_vbr_maxsection_pct:", cfg->rc_2pass_vbr_maxsection_pct);
189  av_log(avctx, level, "keyframing settings\n"
190  " %*s%d\n %*s%u\n %*s%u\n",
191  width, "kf_mode:", cfg->kf_mode,
192  width, "kf_min_dist:", cfg->kf_min_dist,
193  width, "kf_max_dist:", cfg->kf_max_dist);
194  av_log(avctx, level, "\n");
195 }
196 
197 static void coded_frame_add(void *list, struct FrameListData *cx_frame)
198 {
199  struct FrameListData **p = list;
200 
201  while (*p)
202  p = &(*p)->next;
203  *p = cx_frame;
204  cx_frame->next = NULL;
205 }
206 
207 static av_cold void free_coded_frame(struct FrameListData *cx_frame)
208 {
209  av_freep(&cx_frame->buf);
210  if (cx_frame->buf_alpha)
211  av_freep(&cx_frame->buf_alpha);
212  av_freep(&cx_frame);
213 }
214 
215 static av_cold void free_frame_list(struct FrameListData *list)
216 {
217  struct FrameListData *p = list;
218 
219  while (p) {
220  list = list->next;
221  free_coded_frame(p);
222  p = list;
223  }
224 }
225 
226 static av_cold int codecctl_int(AVCodecContext *avctx,
227  enum vp8e_enc_control_id id, int val)
228 {
229  VP8Context *ctx = avctx->priv_data;
230  char buf[80];
231  int width = -30;
232  int res;
233 
234  snprintf(buf, sizeof(buf), "%s:", ctlidstr[id]);
235  av_log(avctx, AV_LOG_DEBUG, " %*s%d\n", width, buf, val);
236 
237  res = vpx_codec_control(&ctx->encoder, id, val);
238  if (res != VPX_CODEC_OK) {
239  snprintf(buf, sizeof(buf), "Failed to set %s codec control",
240  ctlidstr[id]);
241  log_encoder_error(avctx, buf);
242  }
243 
244  return res == VPX_CODEC_OK ? 0 : AVERROR(EINVAL);
245 }
246 
247 static av_cold int vp8_free(AVCodecContext *avctx)
248 {
249  VP8Context *ctx = avctx->priv_data;
250 
251  vpx_codec_destroy(&ctx->encoder);
252  if (ctx->is_alpha)
253  vpx_codec_destroy(&ctx->encoder_alpha);
254  av_freep(&ctx->twopass_stats.buf);
255  av_freep(&avctx->coded_frame);
256  av_freep(&avctx->stats_out);
257  free_frame_list(ctx->coded_frame_list);
258  return 0;
259 }
260 
261 static av_cold int vpx_init(AVCodecContext *avctx,
262  const struct vpx_codec_iface *iface)
263 {
264  VP8Context *ctx = avctx->priv_data;
265  struct vpx_codec_enc_cfg enccfg;
266  struct vpx_codec_enc_cfg enccfg_alpha;
267  vpx_codec_flags_t flags = (avctx->flags & CODEC_FLAG_PSNR) ? VPX_CODEC_USE_PSNR : 0;
268  int res;
269 
270  av_log(avctx, AV_LOG_INFO, "%s\n", vpx_codec_version_str());
271  av_log(avctx, AV_LOG_VERBOSE, "%s\n", vpx_codec_build_config());
272 
273  if (avctx->pix_fmt == AV_PIX_FMT_YUVA420P)
274  ctx->is_alpha = 1;
275 
276  if ((res = vpx_codec_enc_config_default(iface, &enccfg, 0)) != VPX_CODEC_OK) {
277  av_log(avctx, AV_LOG_ERROR, "Failed to get config: %s\n",
278  vpx_codec_err_to_string(res));
279  return AVERROR(EINVAL);
280  }
281 
282  if(!avctx->bit_rate)
283  if(avctx->rc_max_rate || avctx->rc_buffer_size || avctx->rc_initial_buffer_occupancy) {
284  av_log( avctx, AV_LOG_ERROR, "Rate control parameters set without a bitrate\n");
285  return AVERROR(EINVAL);
286  }
287 
288  dump_enc_cfg(avctx, &enccfg);
289 
290  enccfg.g_w = avctx->width;
291  enccfg.g_h = avctx->height;
292  enccfg.g_timebase.num = avctx->time_base.num;
293  enccfg.g_timebase.den = avctx->time_base.den;
294  enccfg.g_threads = avctx->thread_count;
295  enccfg.g_lag_in_frames= ctx->lag_in_frames;
296 
297  if (avctx->flags & CODEC_FLAG_PASS1)
298  enccfg.g_pass = VPX_RC_FIRST_PASS;
299  else if (avctx->flags & CODEC_FLAG_PASS2)
300  enccfg.g_pass = VPX_RC_LAST_PASS;
301  else
302  enccfg.g_pass = VPX_RC_ONE_PASS;
303 
304  if (avctx->rc_min_rate == avctx->rc_max_rate &&
305  avctx->rc_min_rate == avctx->bit_rate && avctx->bit_rate) {
306  enccfg.rc_end_usage = VPX_CBR;
307  } else if (ctx->crf >= 0) {
308  enccfg.rc_end_usage = VPX_CQ;
309 #if CONFIG_LIBVPX_VP9_ENCODER
310  if (!avctx->bit_rate && avctx->codec_id == AV_CODEC_ID_VP9)
311  enccfg.rc_end_usage = VPX_Q;
312 #endif
313  }
314 
315  if (avctx->bit_rate) {
316  enccfg.rc_target_bitrate = av_rescale_rnd(avctx->bit_rate, 1, 1000,
317  AV_ROUND_NEAR_INF);
318 #if CONFIG_LIBVPX_VP9_ENCODER
319  } else if (enccfg.rc_end_usage == VPX_Q) {
320 #endif
321  } else {
322  if (enccfg.rc_end_usage == VPX_CQ) {
323  enccfg.rc_target_bitrate = 1000000;
324  } else {
325  avctx->bit_rate = enccfg.rc_target_bitrate * 1000;
326  av_log(avctx, AV_LOG_WARNING,
327  "Neither bitrate nor constrained quality specified, using default bitrate of %dkbit/sec\n",
328  enccfg.rc_target_bitrate);
329  }
330  }
331 
332  if (avctx->qmin >= 0)
333  enccfg.rc_min_quantizer = avctx->qmin;
334  if (avctx->qmax >= 0)
335  enccfg.rc_max_quantizer = avctx->qmax;
336 
337  if (enccfg.rc_end_usage == VPX_CQ
338 #if CONFIG_LIBVPX_VP9_ENCODER
339  || enccfg.rc_end_usage == VPX_Q
340 #endif
341  ) {
342  if (ctx->crf < enccfg.rc_min_quantizer || ctx->crf > enccfg.rc_max_quantizer) {
343  av_log(avctx, AV_LOG_ERROR,
344  "CQ level %d must be between minimum and maximum quantizer value (%d-%d)\n",
345  ctx->crf, enccfg.rc_min_quantizer, enccfg.rc_max_quantizer);
346  return AVERROR(EINVAL);
347  }
348  }
349 
350  enccfg.rc_dropframe_thresh = avctx->frame_skip_threshold;
351 
352  //0-100 (0 => CBR, 100 => VBR)
353  enccfg.rc_2pass_vbr_bias_pct = round(avctx->qcompress * 100);
354  if (avctx->bit_rate)
355  enccfg.rc_2pass_vbr_minsection_pct =
356  avctx->rc_min_rate * 100LL / avctx->bit_rate;
357  if (avctx->rc_max_rate)
358  enccfg.rc_2pass_vbr_maxsection_pct =
359  avctx->rc_max_rate * 100LL / avctx->bit_rate;
360 
361  if (avctx->rc_buffer_size)
362  enccfg.rc_buf_sz =
363  avctx->rc_buffer_size * 1000LL / avctx->bit_rate;
364  if (avctx->rc_initial_buffer_occupancy)
365  enccfg.rc_buf_initial_sz =
366  avctx->rc_initial_buffer_occupancy * 1000LL / avctx->bit_rate;
367  enccfg.rc_buf_optimal_sz = enccfg.rc_buf_sz * 5 / 6;
368  enccfg.rc_undershoot_pct = round(avctx->rc_buffer_aggressivity * 100);
369 
370  //_enc_init() will balk if kf_min_dist differs from max w/VPX_KF_AUTO
371  if (avctx->keyint_min >= 0 && avctx->keyint_min == avctx->gop_size)
372  enccfg.kf_min_dist = avctx->keyint_min;
373  if (avctx->gop_size >= 0)
374  enccfg.kf_max_dist = avctx->gop_size;
375 
376  if (enccfg.g_pass == VPX_RC_FIRST_PASS)
377  enccfg.g_lag_in_frames = 0;
378  else if (enccfg.g_pass == VPX_RC_LAST_PASS) {
379  int decode_size;
380 
381  if (!avctx->stats_in) {
382  av_log(avctx, AV_LOG_ERROR, "No stats file for second pass\n");
383  return AVERROR_INVALIDDATA;
384  }
385 
386  ctx->twopass_stats.sz = strlen(avctx->stats_in) * 3 / 4;
387  ctx->twopass_stats.buf = av_malloc(ctx->twopass_stats.sz);
388  if (!ctx->twopass_stats.buf) {
389  av_log(avctx, AV_LOG_ERROR,
390  "Stat buffer alloc (%"SIZE_SPECIFIER" bytes) failed\n",
391  ctx->twopass_stats.sz);
392  return AVERROR(ENOMEM);
393  }
394  decode_size = av_base64_decode(ctx->twopass_stats.buf, avctx->stats_in,
395  ctx->twopass_stats.sz);
396  if (decode_size < 0) {
397  av_log(avctx, AV_LOG_ERROR, "Stat buffer decode failed\n");
398  return AVERROR_INVALIDDATA;
399  }
400 
401  ctx->twopass_stats.sz = decode_size;
402  enccfg.rc_twopass_stats_in = ctx->twopass_stats;
403  }
404 
405  /* 0-3: For non-zero values the encoder increasingly optimizes for reduced
406  complexity playback on low powered devices at the expense of encode
407  quality. */
408  if (avctx->profile != FF_PROFILE_UNKNOWN)
409  enccfg.g_profile = avctx->profile;
410 
411  enccfg.g_error_resilient = ctx->error_resilient || ctx->flags & VP8F_ERROR_RESILIENT;
412 
413  dump_enc_cfg(avctx, &enccfg);
414  /* Construct Encoder Context */
415  res = vpx_codec_enc_init(&ctx->encoder, iface, &enccfg, flags);
416  if (res != VPX_CODEC_OK) {
417  log_encoder_error(avctx, "Failed to initialize encoder");
418  return AVERROR(EINVAL);
419  }
420 
421  if (ctx->is_alpha) {
422  enccfg_alpha = enccfg;
423  res = vpx_codec_enc_init(&ctx->encoder_alpha, iface, &enccfg_alpha, flags);
424  if (res != VPX_CODEC_OK) {
425  log_encoder_error(avctx, "Failed to initialize alpha encoder");
426  return AVERROR(EINVAL);
427  }
428  }
429 
430  //codec control failures are currently treated only as warnings
431  av_log(avctx, AV_LOG_DEBUG, "vpx_codec_control\n");
432  codecctl_int(avctx, VP8E_SET_CPUUSED, ctx->cpu_used);
433  if (ctx->flags & VP8F_AUTO_ALT_REF)
434  ctx->auto_alt_ref = 1;
435  if (ctx->auto_alt_ref >= 0)
436  codecctl_int(avctx, VP8E_SET_ENABLEAUTOALTREF, ctx->auto_alt_ref);
437  if (ctx->arnr_max_frames >= 0)
438  codecctl_int(avctx, VP8E_SET_ARNR_MAXFRAMES, ctx->arnr_max_frames);
439  if (ctx->arnr_strength >= 0)
440  codecctl_int(avctx, VP8E_SET_ARNR_STRENGTH, ctx->arnr_strength);
441  if (ctx->arnr_type >= 0)
442  codecctl_int(avctx, VP8E_SET_ARNR_TYPE, ctx->arnr_type);
443  codecctl_int(avctx, VP8E_SET_NOISE_SENSITIVITY, avctx->noise_reduction);
444  if (avctx->codec_id == AV_CODEC_ID_VP8)
445  codecctl_int(avctx, VP8E_SET_TOKEN_PARTITIONS, av_log2(avctx->slices));
446  codecctl_int(avctx, VP8E_SET_STATIC_THRESHOLD, avctx->mb_threshold);
447  if (ctx->crf >= 0)
448  codecctl_int(avctx, VP8E_SET_CQ_LEVEL, ctx->crf);
449  if (ctx->max_intra_rate >= 0)
450  codecctl_int(avctx, VP8E_SET_MAX_INTRA_BITRATE_PCT, ctx->max_intra_rate);
451 
452 #if CONFIG_LIBVPX_VP9_ENCODER
453  if (avctx->codec_id == AV_CODEC_ID_VP9) {
454  if (ctx->lossless >= 0)
455  codecctl_int(avctx, VP9E_SET_LOSSLESS, ctx->lossless);
456  if (ctx->tile_columns >= 0)
457  codecctl_int(avctx, VP9E_SET_TILE_COLUMNS, ctx->tile_columns);
458  if (ctx->tile_rows >= 0)
459  codecctl_int(avctx, VP9E_SET_TILE_ROWS, ctx->tile_rows);
460  if (ctx->frame_parallel >= 0)
461  codecctl_int(avctx, VP9E_SET_FRAME_PARALLEL_DECODING, ctx->frame_parallel);
462  if (ctx->aq_mode >= 0)
463  codecctl_int(avctx, VP9E_SET_AQ_MODE, ctx->aq_mode);
464  }
465 #endif
466 
467  av_log(avctx, AV_LOG_DEBUG, "Using deadline: %d\n", ctx->deadline);
468 
469  //provide dummy value to initialize wrapper, values will be updated each _encode()
470  vpx_img_wrap(&ctx->rawimg, VPX_IMG_FMT_I420, avctx->width, avctx->height, 1,
471  (unsigned char*)1);
472 
473  if (ctx->is_alpha)
474  vpx_img_wrap(&ctx->rawimg_alpha, VPX_IMG_FMT_I420, avctx->width, avctx->height, 1,
475  (unsigned char*)1);
476 
477  avctx->coded_frame = av_frame_alloc();
478  if (!avctx->coded_frame) {
479  av_log(avctx, AV_LOG_ERROR, "Error allocating coded frame\n");
480  vp8_free(avctx);
481  return AVERROR(ENOMEM);
482  }
483  return 0;
484 }
485 
486 static inline void cx_pktcpy(struct FrameListData *dst,
487  const struct vpx_codec_cx_pkt *src,
488  const struct vpx_codec_cx_pkt *src_alpha,
489  VP8Context *ctx)
490 {
491  dst->pts = src->data.frame.pts;
492  dst->duration = src->data.frame.duration;
493  dst->flags = src->data.frame.flags;
494  dst->sz = src->data.frame.sz;
495  dst->buf = src->data.frame.buf;
496  dst->have_sse = 0;
497  /* For alt-ref frame, don't store PSNR or increment frame_number */
498  if (!(dst->flags & VPX_FRAME_IS_INVISIBLE)) {
499  dst->frame_number = ++ctx->frame_number;
500  dst->have_sse = ctx->have_sse;
501  if (ctx->have_sse) {
502  /* associate last-seen SSE to the frame. */
503  /* Transfers ownership from ctx to dst. */
504  /* WARNING! This makes the assumption that PSNR_PKT comes
505  just before the frame it refers to! */
506  memcpy(dst->sse, ctx->sse, sizeof(dst->sse));
507  ctx->have_sse = 0;
508  }
509  } else {
510  dst->frame_number = -1; /* sanity marker */
511  }
512  if (src_alpha) {
513  dst->buf_alpha = src_alpha->data.frame.buf;
514  dst->sz_alpha = src_alpha->data.frame.sz;
515  }
516  else {
517  dst->buf_alpha = NULL;
518  dst->sz_alpha = 0;
519  }
520 }
521 
522 /**
523  * Store coded frame information in format suitable for return from encode2().
524  *
525  * Write information from @a cx_frame to @a pkt
526  * @return packet data size on success
527  * @return a negative AVERROR on error
528  */
529 static int storeframe(AVCodecContext *avctx, struct FrameListData *cx_frame,
530  AVPacket *pkt, AVFrame *coded_frame)
531 {
532  int ret = ff_alloc_packet2(avctx, pkt, cx_frame->sz);
533  uint8_t *side_data;
534  if (ret >= 0) {
535  memcpy(pkt->data, cx_frame->buf, pkt->size);
536  pkt->pts = pkt->dts = cx_frame->pts;
537  coded_frame->pts = cx_frame->pts;
538  coded_frame->key_frame = !!(cx_frame->flags & VPX_FRAME_IS_KEY);
539 
540  if (coded_frame->key_frame) {
541  coded_frame->pict_type = AV_PICTURE_TYPE_I;
542  pkt->flags |= AV_PKT_FLAG_KEY;
543  } else
544  coded_frame->pict_type = AV_PICTURE_TYPE_P;
545 
546  if (cx_frame->have_sse) {
547  int i;
548  /* Beware of the Y/U/V/all order! */
549  coded_frame->error[0] = cx_frame->sse[1];
550  coded_frame->error[1] = cx_frame->sse[2];
551  coded_frame->error[2] = cx_frame->sse[3];
552  coded_frame->error[3] = 0; // alpha
553  for (i = 0; i < 4; ++i) {
554  avctx->error[i] += coded_frame->error[i];
555  }
556  cx_frame->have_sse = 0;
557  }
558  if (cx_frame->sz_alpha > 0) {
559  side_data = av_packet_new_side_data(pkt,
560  AV_PKT_DATA_MATROSKA_BLOCKADDITIONAL,
561  cx_frame->sz_alpha + 8);
562  if(!side_data) {
563  av_free_packet(pkt);
564  av_free(pkt);
565  return AVERROR(ENOMEM);
566  }
567  AV_WB64(side_data, 1);
568  memcpy(side_data + 8, cx_frame->buf_alpha, cx_frame->sz_alpha);
569  }
570  } else {
571  return ret;
572  }
573  return pkt->size;
574 }
575 
576 /**
577  * Queue multiple output frames from the encoder, returning the front-most.
578  * In cases where vpx_codec_get_cx_data() returns more than 1 frame append
579  * the frame queue. Return the head frame if available.
580  * @return Stored frame size
581  * @return AVERROR(EINVAL) on output size error
582  * @return AVERROR(ENOMEM) on coded frame queue data allocation error
583  */
584 static int queue_frames(AVCodecContext *avctx, AVPacket *pkt_out,
585  AVFrame *coded_frame)
586 {
587  VP8Context *ctx = avctx->priv_data;
588  const struct vpx_codec_cx_pkt *pkt;
589  const struct vpx_codec_cx_pkt *pkt_alpha = NULL;
590  const void *iter = NULL;
591  const void *iter_alpha = NULL;
592  int size = 0;
593 
594  if (ctx->coded_frame_list) {
595  struct FrameListData *cx_frame = ctx->coded_frame_list;
596  /* return the leading frame if we've already begun queueing */
597  size = storeframe(avctx, cx_frame, pkt_out, coded_frame);
598  if (size < 0)
599  return size;
600  ctx->coded_frame_list = cx_frame->next;
601  free_coded_frame(cx_frame);
602  }
603 
604  /* consume all available output from the encoder before returning. buffers
605  are only good through the next vpx_codec call */
606  while ((pkt = vpx_codec_get_cx_data(&ctx->encoder, &iter)) &&
607  (!ctx->is_alpha ||
608  (ctx->is_alpha && (pkt_alpha = vpx_codec_get_cx_data(&ctx->encoder_alpha, &iter_alpha))))) {
609  switch (pkt->kind) {
610  case VPX_CODEC_CX_FRAME_PKT:
611  if (!size) {
612  struct FrameListData cx_frame;
613 
614  /* avoid storing the frame when the list is empty and we haven't yet
615  provided a frame for output */
616  av_assert0(!ctx->coded_frame_list);
617  cx_pktcpy(&cx_frame, pkt, pkt_alpha, ctx);
618  size = storeframe(avctx, &cx_frame, pkt_out, coded_frame);
619  if (size < 0)
620  return size;
621  } else {
622  struct FrameListData *cx_frame =
623  av_malloc(sizeof(struct FrameListData));
624 
625  if (!cx_frame) {
626  av_log(avctx, AV_LOG_ERROR,
627  "Frame queue element alloc failed\n");
628  return AVERROR(ENOMEM);
629  }
630  cx_pktcpy(cx_frame, pkt, pkt_alpha, ctx);
631  cx_frame->buf = av_malloc(cx_frame->sz);
632 
633  if (!cx_frame->buf) {
634  av_log(avctx, AV_LOG_ERROR,
635  "Data buffer alloc (%"SIZE_SPECIFIER" bytes) failed\n",
636  cx_frame->sz);
637  av_free(cx_frame);
638  return AVERROR(ENOMEM);
639  }
640  memcpy(cx_frame->buf, pkt->data.frame.buf, pkt->data.frame.sz);
641  if (ctx->is_alpha) {
642  cx_frame->buf_alpha = av_malloc(cx_frame->sz_alpha);
643  if (!cx_frame->buf_alpha) {
644  av_log(avctx, AV_LOG_ERROR,
645  "Data buffer alloc (%"SIZE_SPECIFIER" bytes) failed\n",
646  cx_frame->sz_alpha);
647  av_free(cx_frame);
648  return AVERROR(ENOMEM);
649  }
650  memcpy(cx_frame->buf_alpha, pkt_alpha->data.frame.buf, pkt_alpha->data.frame.sz);
651  }
652  coded_frame_add(&ctx->coded_frame_list, cx_frame);
653  }
654  break;
655  case VPX_CODEC_STATS_PKT: {
656  struct vpx_fixed_buf *stats = &ctx->twopass_stats;
657  int err;
658  if ((err = av_reallocp(&stats->buf,
659  stats->sz +
660  pkt->data.twopass_stats.sz)) < 0) {
661  stats->sz = 0;
662  av_log(avctx, AV_LOG_ERROR, "Stat buffer realloc failed\n");
663  return err;
664  }
665  memcpy((uint8_t*)stats->buf + stats->sz,
666  pkt->data.twopass_stats.buf, pkt->data.twopass_stats.sz);
667  stats->sz += pkt->data.twopass_stats.sz;
668  break;
669  }
670  case VPX_CODEC_PSNR_PKT:
671  av_assert0(!ctx->have_sse);
672  ctx->sse[0] = pkt->data.psnr.sse[0];
673  ctx->sse[1] = pkt->data.psnr.sse[1];
674  ctx->sse[2] = pkt->data.psnr.sse[2];
675  ctx->sse[3] = pkt->data.psnr.sse[3];
676  ctx->have_sse = 1;
677  break;
678  case VPX_CODEC_CUSTOM_PKT:
679  //ignore unsupported/unrecognized packet types
680  break;
681  }
682  }
683 
684  return size;
685 }
686 
687 static int vp8_encode(AVCodecContext *avctx, AVPacket *pkt,
688  const AVFrame *frame, int *got_packet)
689 {
690  VP8Context *ctx = avctx->priv_data;
691  struct vpx_image *rawimg = NULL;
692  struct vpx_image *rawimg_alpha = NULL;
693  int64_t timestamp = 0;
694  int res, coded_size;
695  vpx_enc_frame_flags_t flags = 0;
696 
697  if (frame) {
698  rawimg = &ctx->rawimg;
699  rawimg->planes[VPX_PLANE_Y] = frame->data[0];
700  rawimg->planes[VPX_PLANE_U] = frame->data[1];
701  rawimg->planes[VPX_PLANE_V] = frame->data[2];
702  rawimg->stride[VPX_PLANE_Y] = frame->linesize[0];
703  rawimg->stride[VPX_PLANE_U] = frame->linesize[1];
704  rawimg->stride[VPX_PLANE_V] = frame->linesize[2];
705  if (ctx->is_alpha) {
706  uint8_t *u_plane, *v_plane;
707  rawimg_alpha = &ctx->rawimg_alpha;
708  rawimg_alpha->planes[VPX_PLANE_Y] = frame->data[3];
709  u_plane = av_malloc(frame->linesize[1] * frame->height);
710  memset(u_plane, 0x80, frame->linesize[1] * frame->height);
711  rawimg_alpha->planes[VPX_PLANE_U] = u_plane;
712  v_plane = av_malloc(frame->linesize[2] * frame->height);
713  memset(v_plane, 0x80, frame->linesize[2] * frame->height);
714  rawimg_alpha->planes[VPX_PLANE_V] = v_plane;
715  rawimg_alpha->stride[VPX_PLANE_Y] = frame->linesize[0];
716  rawimg_alpha->stride[VPX_PLANE_U] = frame->linesize[1];
717  rawimg_alpha->stride[VPX_PLANE_V] = frame->linesize[2];
718  }
719  timestamp = frame->pts;
720  if (frame->pict_type == AV_PICTURE_TYPE_I)
721  flags |= VPX_EFLAG_FORCE_KF;
722  }
723 
724  res = vpx_codec_encode(&ctx->encoder, rawimg, timestamp,
725  avctx->ticks_per_frame, flags, ctx->deadline);
726  if (res != VPX_CODEC_OK) {
727  log_encoder_error(avctx, "Error encoding frame");
728  return AVERROR_INVALIDDATA;
729  }
730 
731  if (ctx->is_alpha) {
732  res = vpx_codec_encode(&ctx->encoder_alpha, rawimg_alpha, timestamp,
733  avctx->ticks_per_frame, flags, ctx->deadline);
734  if (res != VPX_CODEC_OK) {
735  log_encoder_error(avctx, "Error encoding alpha frame");
736  return AVERROR_INVALIDDATA;
737  }
738  }
739 
740  coded_size = queue_frames(avctx, pkt, avctx->coded_frame);
741 
742  if (!frame && avctx->flags & CODEC_FLAG_PASS1) {
743  unsigned int b64_size = AV_BASE64_SIZE(ctx->twopass_stats.sz);
744 
745  avctx->stats_out = av_malloc(b64_size);
746  if (!avctx->stats_out) {
747  av_log(avctx, AV_LOG_ERROR, "Stat buffer alloc (%d bytes) failed\n",
748  b64_size);
749  return AVERROR(ENOMEM);
750  }
751  av_base64_encode(avctx->stats_out, b64_size, ctx->twopass_stats.buf,
752  ctx->twopass_stats.sz);
753  }
754 
755  if (rawimg_alpha) {
756  av_free(rawimg_alpha->planes[VPX_PLANE_U]);
757  av_free(rawimg_alpha->planes[VPX_PLANE_V]);
758  }
759 
760  *got_packet = !!coded_size;
761  return 0;
762 }
763 
764 #define OFFSET(x) offsetof(VP8Context, x)
765 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
766 
767 #ifndef VPX_ERROR_RESILIENT_DEFAULT
768 #define VPX_ERROR_RESILIENT_DEFAULT 1
769 #define VPX_ERROR_RESILIENT_PARTITIONS 2
770 #endif
771 
772 #define COMMON_OPTIONS \
773  { "cpu-used", "Quality/Speed ratio modifier", OFFSET(cpu_used), AV_OPT_TYPE_INT, {.i64 = 1}, -16, 16, VE}, \
774  { "auto-alt-ref", "Enable use of alternate reference " \
775  "frames (2-pass only)", OFFSET(auto_alt_ref), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 1, VE}, \
776  { "lag-in-frames", "Number of frames to look ahead for " \
777  "alternate reference frame selection", OFFSET(lag_in_frames), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, VE}, \
778  { "arnr-maxframes", "altref noise reduction max frame count", OFFSET(arnr_max_frames), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, VE}, \
779  { "arnr-strength", "altref noise reduction filter strength", OFFSET(arnr_strength), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, VE}, \
780  { "arnr-type", "altref noise reduction filter type", OFFSET(arnr_type), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, VE, "arnr_type"}, \
781  { "backward", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = 1}, 0, 0, VE, "arnr_type" }, \
782  { "forward", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = 2}, 0, 0, VE, "arnr_type" }, \
783  { "centered", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = 3}, 0, 0, VE, "arnr_type" }, \
784  { "deadline", "Time to spend encoding, in microseconds.", OFFSET(deadline), AV_OPT_TYPE_INT, {.i64 = VPX_DL_GOOD_QUALITY}, INT_MIN, INT_MAX, VE, "quality"}, \
785  { "best", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = VPX_DL_BEST_QUALITY}, 0, 0, VE, "quality"}, \
786  { "good", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = VPX_DL_GOOD_QUALITY}, 0, 0, VE, "quality"}, \
787  { "realtime", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = VPX_DL_REALTIME}, 0, 0, VE, "quality"}, \
788  { "error-resilient", "Error resilience configuration", OFFSET(error_resilient), AV_OPT_TYPE_FLAGS, {.i64 = 0}, INT_MIN, INT_MAX, VE, "er"}, \
789  { "max-intra-rate", "Maximum I-frame bitrate (pct) 0=unlimited", OFFSET(max_intra_rate), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, VE}, \
790  { "default", "Improve resiliency against losses of whole frames", 0, AV_OPT_TYPE_CONST, {.i64 = VPX_ERROR_RESILIENT_DEFAULT}, 0, 0, VE, "er"}, \
791  { "partitions", "The frame partitions are independently decodable " \
792  "by the bool decoder, meaning that partitions can be decoded even " \
793  "though earlier partitions have been lost. Note that intra predicition" \
794  " is still done over the partition boundary.", 0, AV_OPT_TYPE_CONST, {.i64 = VPX_ERROR_RESILIENT_PARTITIONS}, 0, 0, VE, "er"}, \
795  { "crf", "Select the quality for constant quality mode", offsetof(VP8Context, crf), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 63, VE }, \
796 
797 #define LEGACY_OPTIONS \
798  {"speed", "", offsetof(VP8Context, cpu_used), AV_OPT_TYPE_INT, {.i64 = 1}, -16, 16, VE}, \
799  {"quality", "", offsetof(VP8Context, deadline), AV_OPT_TYPE_INT, {.i64 = VPX_DL_GOOD_QUALITY}, INT_MIN, INT_MAX, VE, "quality"}, \
800  {"vp8flags", "", offsetof(VP8Context, flags), FF_OPT_TYPE_FLAGS, {.i64 = 0}, 0, UINT_MAX, VE, "flags"}, \
801  {"error_resilient", "enable error resilience", 0, FF_OPT_TYPE_CONST, {.dbl = VP8F_ERROR_RESILIENT}, INT_MIN, INT_MAX, VE, "flags"}, \
802  {"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"}, \
803  {"arnr_max_frames", "altref noise reduction max frame count", offsetof(VP8Context, arnr_max_frames), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 15, VE}, \
804  {"arnr_strength", "altref noise reduction filter strength", offsetof(VP8Context, arnr_strength), AV_OPT_TYPE_INT, {.i64 = 3}, 0, 6, VE}, \
805  {"arnr_type", "altref noise reduction filter type", offsetof(VP8Context, arnr_type), AV_OPT_TYPE_INT, {.i64 = 3}, 1, 3, VE}, \
806  {"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}, \
807 
808 #if CONFIG_LIBVPX_VP8_ENCODER
809 static const AVOption vp8_options[] = {
810  COMMON_OPTIONS
811  LEGACY_OPTIONS
812  { NULL }
813 };
814 #endif
815 
816 #if CONFIG_LIBVPX_VP9_ENCODER
817 static const AVOption vp9_options[] = {
818  COMMON_OPTIONS
819  { "lossless", "Lossless mode", OFFSET(lossless), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 1, VE},
820  { "tile-columns", "Number of tile columns to use, log2", OFFSET(tile_columns), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 6, VE},
821  { "tile-rows", "Number of tile rows to use, log2", OFFSET(tile_rows), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 2, VE},
822  { "frame-parallel", "Enable frame parallel decodability features", OFFSET(frame_parallel), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 1, VE},
823  { "aq-mode", "adaptive quantization mode", OFFSET(aq_mode), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 3, VE, "aq_mode"},
824  { "none", "Aq not used", 0, AV_OPT_TYPE_CONST, {.i64 = 0}, 0, 0, VE, "aq_mode" }, \
825  { "variance", "Variance based Aq", 0, AV_OPT_TYPE_CONST, {.i64 = 1}, 0, 0, VE, "aq_mode" }, \
826  { "complexity", "Complexity based Aq", 0, AV_OPT_TYPE_CONST, {.i64 = 2}, 0, 0, VE, "aq_mode" }, \
827  { "cyclic", "Cyclic Refresh Aq", 0, AV_OPT_TYPE_CONST, {.i64 = 3}, 0, 0, VE, "aq_mode" }, \
828  LEGACY_OPTIONS
829  { NULL }
830 };
831 #endif
832 
833 #undef COMMON_OPTIONS
834 #undef LEGACY_OPTIONS
835 
836 static const AVCodecDefault defaults[] = {
837  { "qmin", "-1" },
838  { "qmax", "-1" },
839  { "g", "-1" },
840  { "keyint_min", "-1" },
841  { NULL },
842 };
843 
844 #if CONFIG_LIBVPX_VP8_ENCODER
845 static av_cold int vp8_init(AVCodecContext *avctx)
846 {
847  return vpx_init(avctx, &vpx_codec_vp8_cx_algo);
848 }
849 
850 static const AVClass class_vp8 = {
851  .class_name = "libvpx-vp8 encoder",
852  .item_name = av_default_item_name,
853  .option = vp8_options,
854  .version = LIBAVUTIL_VERSION_INT,
855 };
856 
857 AVCodec ff_libvpx_vp8_encoder = {
858  .name = "libvpx",
859  .long_name = NULL_IF_CONFIG_SMALL("libvpx VP8"),
860  .type = AVMEDIA_TYPE_VIDEO,
861  .id = AV_CODEC_ID_VP8,
862  .priv_data_size = sizeof(VP8Context),
863  .init = vp8_init,
864  .encode2 = vp8_encode,
865  .close = vp8_free,
866  .capabilities = CODEC_CAP_DELAY | CODEC_CAP_AUTO_THREADS,
867  .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUVA420P, AV_PIX_FMT_NONE },
868  .priv_class = &class_vp8,
869  .defaults = defaults,
870 };
871 #endif /* CONFIG_LIBVPX_VP8_ENCODER */
872 
873 #if CONFIG_LIBVPX_VP9_ENCODER
874 static av_cold int vp9_init(AVCodecContext *avctx)
875 {
876  return vpx_init(avctx, &vpx_codec_vp9_cx_algo);
877 }
878 
879 static const AVClass class_vp9 = {
880  .class_name = "libvpx-vp9 encoder",
881  .item_name = av_default_item_name,
882  .option = vp9_options,
883  .version = LIBAVUTIL_VERSION_INT,
884 };
885 
886 AVCodec ff_libvpx_vp9_encoder = {
887  .name = "libvpx-vp9",
888  .long_name = NULL_IF_CONFIG_SMALL("libvpx VP9"),
889  .type = AVMEDIA_TYPE_VIDEO,
890  .id = AV_CODEC_ID_VP9,
891  .priv_data_size = sizeof(VP8Context),
892  .init = vp9_init,
893  .encode2 = vp8_encode,
894  .close = vp8_free,
895  .capabilities = CODEC_CAP_DELAY | CODEC_CAP_AUTO_THREADS,
896  .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
897  .priv_class = &class_vp9,
898  .defaults = defaults,
899  .init_static_data = ff_vp9_init_static,
900 };
901 #endif /* CONFIG_LIBVPX_VP9_ENCODER */
Generated on Sun Sep 14 2014 18:55:58 for FFmpeg by   doxygen 1.8.2