FFmpeg
libopenh264enc.c
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1 /*
2  * OpenH264 video encoder
3  * Copyright (C) 2014 Martin Storsjo
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 #include <wels/codec_api.h>
23 #include <wels/codec_ver.h>
24 
25 #include "libavutil/attributes.h"
26 #include "libavutil/common.h"
27 #include "libavutil/opt.h"
28 #include "libavutil/internal.h"
29 #include "libavutil/intreadwrite.h"
30 #include "libavutil/mathematics.h"
31 
32 #include "avcodec.h"
33 #include "encode.h"
34 #include "internal.h"
35 #include "libopenh264.h"
36 
37 #if !OPENH264_VER_AT_LEAST(1, 6)
38 #define SM_SIZELIMITED_SLICE SM_DYN_SLICE
39 #endif
40 
41 #define TARGET_BITRATE_DEFAULT 2*1000*1000
42 
43 typedef struct SVCContext {
44  const AVClass *av_class;
45  ISVCEncoder *encoder;
48  int profile;
51  int skipped;
52 #if FF_API_OPENH264_CABAC
53  int cabac; // deprecated
54 #endif
55  int coder;
56 
57  // rate control mode
58  int rc_mode;
59 } SVCContext;
60 
61 #define OFFSET(x) offsetof(SVCContext, x)
62 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
63 #define DEPRECATED AV_OPT_FLAG_DEPRECATED
64 static const AVOption options[] = {
65 #if FF_API_OPENH264_SLICE_MODE
66 #if OPENH264_VER_AT_LEAST(1, 6)
67  { "slice_mode", "set slice mode, use slices/max_nal_size", OFFSET(slice_mode), AV_OPT_TYPE_INT, { .i64 = SM_FIXEDSLCNUM_SLICE }, SM_SINGLE_SLICE, SM_RESERVED, VE|DEPRECATED, "slice_mode" },
68 #else
69  { "slice_mode", "set slice mode, use slices/max_nal_size", OFFSET(slice_mode), AV_OPT_TYPE_INT, { .i64 = SM_AUTO_SLICE }, SM_SINGLE_SLICE, SM_RESERVED, VE|DEPRECATED, "slice_mode" },
70 #endif
71  { "fixed", "a fixed number of slices", 0, AV_OPT_TYPE_CONST, { .i64 = SM_FIXEDSLCNUM_SLICE }, 0, 0, VE, "slice_mode" },
72 #if OPENH264_VER_AT_LEAST(1, 6)
73  { "dyn", "Size limited (compatibility name)", 0, AV_OPT_TYPE_CONST, { .i64 = SM_SIZELIMITED_SLICE }, 0, 0, VE, "slice_mode" },
74  { "sizelimited", "Size limited", 0, AV_OPT_TYPE_CONST, { .i64 = SM_SIZELIMITED_SLICE }, 0, 0, VE, "slice_mode" },
75 #else
76  { "rowmb", "one slice per row of macroblocks", 0, AV_OPT_TYPE_CONST, { .i64 = SM_ROWMB_SLICE }, 0, 0, VE, "slice_mode" },
77  { "auto", "automatic number of slices according to number of threads", 0, AV_OPT_TYPE_CONST, { .i64 = SM_AUTO_SLICE }, 0, 0, VE, "slice_mode" },
78  { "dyn", "Dynamic slicing", 0, AV_OPT_TYPE_CONST, { .i64 = SM_DYN_SLICE }, 0, 0, VE, "slice_mode" },
79 #endif
80 #endif
81  { "loopfilter", "enable loop filter", OFFSET(loopfilter), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, VE },
82  { "profile", "set profile restrictions", OFFSET(profile), AV_OPT_TYPE_INT, { .i64 = FF_PROFILE_UNKNOWN }, FF_PROFILE_UNKNOWN, 0xffff, VE, "profile" },
83 #define PROFILE(name, value) name, NULL, 0, AV_OPT_TYPE_CONST, { .i64 = value }, 0, 0, VE, "profile"
84  { PROFILE("constrained_baseline", FF_PROFILE_H264_CONSTRAINED_BASELINE) },
85  { PROFILE("main", FF_PROFILE_H264_MAIN) },
86  { PROFILE("high", FF_PROFILE_H264_HIGH) },
87 #undef PROFILE
88  { "max_nal_size", "set maximum NAL size in bytes", OFFSET(max_nal_size), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VE },
89  { "allow_skip_frames", "allow skipping frames to hit the target bitrate", OFFSET(skip_frames), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
90 #if FF_API_OPENH264_CABAC
91  { "cabac", "Enable cabac(deprecated, use coder)", OFFSET(cabac), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE|DEPRECATED },
92 #endif
93  { "coder", "Coder type", OFFSET(coder), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE, "coder" },
94  { "default", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = -1 }, INT_MIN, INT_MAX, VE, "coder" },
95  { "cavlc", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, VE, "coder" },
96  { "cabac", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, VE, "coder" },
97  { "vlc", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, VE, "coder" },
98  { "ac", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, VE, "coder" },
99 
100  { "rc_mode", "Select rate control mode", OFFSET(rc_mode), AV_OPT_TYPE_INT, { .i64 = RC_QUALITY_MODE }, RC_OFF_MODE, RC_TIMESTAMP_MODE, VE, "rc_mode" },
101  { "off", "bit rate control off", 0, AV_OPT_TYPE_CONST, { .i64 = RC_OFF_MODE }, 0, 0, VE, "rc_mode" },
102  { "quality", "quality mode", 0, AV_OPT_TYPE_CONST, { .i64 = RC_QUALITY_MODE }, 0, 0, VE, "rc_mode" },
103  { "bitrate", "bitrate mode", 0, AV_OPT_TYPE_CONST, { .i64 = RC_BITRATE_MODE }, 0, 0, VE, "rc_mode" },
104  { "buffer", "using buffer status to adjust the video quality (no bitrate control)", 0, AV_OPT_TYPE_CONST, { .i64 = RC_BUFFERBASED_MODE }, 0, 0, VE, "rc_mode" },
105 #if OPENH264_VER_AT_LEAST(1, 4)
106  { "timestamp", "bit rate control based on timestamp", 0, AV_OPT_TYPE_CONST, { .i64 = RC_TIMESTAMP_MODE }, 0, 0, VE, "rc_mode" },
107 #endif
108 
109  { NULL }
110 };
111 
112 static const AVClass class = {
113  .class_name = "libopenh264enc",
114  .item_name = av_default_item_name,
115  .option = options,
117 };
118 
120 {
121  SVCContext *s = avctx->priv_data;
122 
123  if (s->encoder)
124  WelsDestroySVCEncoder(s->encoder);
125  if (s->skipped > 0)
126  av_log(avctx, AV_LOG_WARNING, "%d frames skipped\n", s->skipped);
127  return 0;
128 }
129 
131 {
132  SVCContext *s = avctx->priv_data;
133  SEncParamExt param = { 0 };
134  int err;
135  int log_level;
136  WelsTraceCallback callback_function;
137  AVCPBProperties *props;
138 
139  if ((err = ff_libopenh264_check_version(avctx)) < 0)
140  return err;
141 
142  if (WelsCreateSVCEncoder(&s->encoder)) {
143  av_log(avctx, AV_LOG_ERROR, "Unable to create encoder\n");
144  return AVERROR_UNKNOWN;
145  }
146 
147  // Pass all libopenh264 messages to our callback, to allow ourselves to filter them.
148  log_level = WELS_LOG_DETAIL;
149  (*s->encoder)->SetOption(s->encoder, ENCODER_OPTION_TRACE_LEVEL, &log_level);
150 
151  // Set the logging callback function to one that uses av_log() (see implementation above).
152  callback_function = (WelsTraceCallback) ff_libopenh264_trace_callback;
153  (*s->encoder)->SetOption(s->encoder, ENCODER_OPTION_TRACE_CALLBACK, &callback_function);
154 
155  // Set the AVCodecContext as the libopenh264 callback context so that it can be passed to av_log().
156  (*s->encoder)->SetOption(s->encoder, ENCODER_OPTION_TRACE_CALLBACK_CONTEXT, &avctx);
157 
158  (*s->encoder)->GetDefaultParams(s->encoder, &param);
159 
160  if (avctx->framerate.num > 0 && avctx->framerate.den > 0) {
161  param.fMaxFrameRate = av_q2d(avctx->framerate);
162  } else {
163  if (avctx->ticks_per_frame > INT_MAX / avctx->time_base.num) {
164  av_log(avctx, AV_LOG_ERROR,
165  "Could not set framerate for libopenh264enc: integer overflow\n");
166  return AVERROR(EINVAL);
167  }
168  param.fMaxFrameRate = 1.0 / av_q2d(avctx->time_base) / FFMAX(avctx->ticks_per_frame, 1);
169  }
170  param.iPicWidth = avctx->width;
171  param.iPicHeight = avctx->height;
172  param.iTargetBitrate = avctx->bit_rate > 0 ? avctx->bit_rate : TARGET_BITRATE_DEFAULT;
173  param.iMaxBitrate = FFMAX(avctx->rc_max_rate, avctx->bit_rate);
174  param.iRCMode = s->rc_mode;
175  if (avctx->qmax >= 0)
176  param.iMaxQp = av_clip(avctx->qmax, 1, 51);
177  if (avctx->qmin >= 0)
178  param.iMinQp = av_clip(avctx->qmin, 1, param.iMaxQp);
179  param.iTemporalLayerNum = 1;
180  param.iSpatialLayerNum = 1;
181  param.bEnableDenoise = 0;
182  param.bEnableBackgroundDetection = 1;
183  param.bEnableAdaptiveQuant = 1;
184  param.bEnableFrameSkip = s->skip_frames;
185  param.bEnableLongTermReference = 0;
186  param.iLtrMarkPeriod = 30;
187  if (avctx->gop_size >= 0)
188  param.uiIntraPeriod = avctx->gop_size;
189 #if OPENH264_VER_AT_LEAST(1, 4)
190  param.eSpsPpsIdStrategy = CONSTANT_ID;
191 #else
192  param.bEnableSpsPpsIdAddition = 0;
193 #endif
194  param.bPrefixNalAddingCtrl = 0;
195  param.iLoopFilterDisableIdc = !s->loopfilter;
196  param.iEntropyCodingModeFlag = 0;
197  param.iMultipleThreadIdc = avctx->thread_count;
198 
199  /* Allow specifying the libopenh264 profile through AVCodecContext. */
200  if (FF_PROFILE_UNKNOWN == s->profile &&
201  FF_PROFILE_UNKNOWN != avctx->profile)
202  switch (avctx->profile) {
206  s->profile = avctx->profile;
207  break;
208  default:
209  av_log(avctx, AV_LOG_WARNING,
210  "Unsupported avctx->profile: %d.\n", avctx->profile);
211  break;
212  }
213 
214  if (s->profile == FF_PROFILE_UNKNOWN && s->coder >= 0)
215  s->profile = s->coder == 0 ? FF_PROFILE_H264_CONSTRAINED_BASELINE :
216 #if OPENH264_VER_AT_LEAST(1, 8)
218 #else
220 #endif
221 
222  switch (s->profile) {
223 #if OPENH264_VER_AT_LEAST(1, 8)
225  param.iEntropyCodingModeFlag = 1;
226  av_log(avctx, AV_LOG_VERBOSE, "Using CABAC, "
227  "select EProfileIdc PRO_HIGH in libopenh264.\n");
228  break;
229 #else
231  param.iEntropyCodingModeFlag = 1;
232  av_log(avctx, AV_LOG_VERBOSE, "Using CABAC, "
233  "select EProfileIdc PRO_MAIN in libopenh264.\n");
234  break;
235 #endif
237  case FF_PROFILE_UNKNOWN:
238  param.iEntropyCodingModeFlag = 0;
239  av_log(avctx, AV_LOG_VERBOSE, "Using CAVLC, "
240  "select EProfileIdc PRO_BASELINE in libopenh264.\n");
241  break;
242  default:
243  param.iEntropyCodingModeFlag = 0;
244  av_log(avctx, AV_LOG_WARNING, "Unsupported profile, "
245  "select EProfileIdc PRO_BASELINE in libopenh264.\n");
246  break;
247  }
248 
249  param.sSpatialLayers[0].iVideoWidth = param.iPicWidth;
250  param.sSpatialLayers[0].iVideoHeight = param.iPicHeight;
251  param.sSpatialLayers[0].fFrameRate = param.fMaxFrameRate;
252  param.sSpatialLayers[0].iSpatialBitrate = param.iTargetBitrate;
253  param.sSpatialLayers[0].iMaxSpatialBitrate = param.iMaxBitrate;
254 
255 #if OPENH264_VER_AT_LEAST(1, 7)
256  if (avctx->sample_aspect_ratio.num && avctx->sample_aspect_ratio.den) {
257  // Table E-1.
258  static const AVRational sar_idc[] = {
259  { 0, 0 }, // Unspecified (never written here).
260  { 1, 1 }, { 12, 11 }, { 10, 11 }, { 16, 11 },
261  { 40, 33 }, { 24, 11 }, { 20, 11 }, { 32, 11 },
262  { 80, 33 }, { 18, 11 }, { 15, 11 }, { 64, 33 },
263  { 160, 99 }, // Last 3 are unknown to openh264: { 4, 3 }, { 3, 2 }, { 2, 1 },
264  };
265  static const ESampleAspectRatio asp_idc[] = {
266  ASP_UNSPECIFIED,
267  ASP_1x1, ASP_12x11, ASP_10x11, ASP_16x11,
268  ASP_40x33, ASP_24x11, ASP_20x11, ASP_32x11,
269  ASP_80x33, ASP_18x11, ASP_15x11, ASP_64x33,
270  ASP_160x99,
271  };
272  int num, den, i;
273 
274  av_reduce(&num, &den, avctx->sample_aspect_ratio.num,
275  avctx->sample_aspect_ratio.den, 65535);
276 
277  for (i = 1; i < FF_ARRAY_ELEMS(sar_idc); i++) {
278  if (num == sar_idc[i].num &&
279  den == sar_idc[i].den)
280  break;
281  }
282  if (i == FF_ARRAY_ELEMS(sar_idc)) {
283  param.sSpatialLayers[0].eAspectRatio = ASP_EXT_SAR;
284  param.sSpatialLayers[0].sAspectRatioExtWidth = num;
285  param.sSpatialLayers[0].sAspectRatioExtHeight = den;
286  } else {
287  param.sSpatialLayers[0].eAspectRatio = asp_idc[i];
288  }
289  param.sSpatialLayers[0].bAspectRatioPresent = true;
290  } else {
291  param.sSpatialLayers[0].bAspectRatioPresent = false;
292  }
293 #endif
294 
295  if ((avctx->slices > 1) && (s->max_nal_size)) {
296  av_log(avctx, AV_LOG_ERROR,
297  "Invalid combination -slices %d and -max_nal_size %d.\n",
298  avctx->slices, s->max_nal_size);
299  return AVERROR(EINVAL);
300  }
301 
302  if (avctx->slices > 1)
303  s->slice_mode = SM_FIXEDSLCNUM_SLICE;
304 
305  if (s->max_nal_size)
306  s->slice_mode = SM_SIZELIMITED_SLICE;
307 
308 #if OPENH264_VER_AT_LEAST(1, 6)
309  param.sSpatialLayers[0].sSliceArgument.uiSliceMode = s->slice_mode;
310  param.sSpatialLayers[0].sSliceArgument.uiSliceNum = avctx->slices;
311 #else
312  param.sSpatialLayers[0].sSliceCfg.uiSliceMode = s->slice_mode;
313  param.sSpatialLayers[0].sSliceCfg.sSliceArgument.uiSliceNum = avctx->slices;
314 #endif
315  if (avctx->slices == 0 && s->slice_mode == SM_FIXEDSLCNUM_SLICE)
316  av_log(avctx, AV_LOG_WARNING, "Slice count will be set automatically\n");
317 
318  if (s->slice_mode == SM_SIZELIMITED_SLICE) {
319  if (s->max_nal_size) {
320  param.uiMaxNalSize = s->max_nal_size;
321 #if OPENH264_VER_AT_LEAST(1, 6)
322  param.sSpatialLayers[0].sSliceArgument.uiSliceSizeConstraint = s->max_nal_size;
323 #else
324  param.sSpatialLayers[0].sSliceCfg.sSliceArgument.uiSliceSizeConstraint = s->max_nal_size;
325 #endif
326  } else {
327  av_log(avctx, AV_LOG_ERROR, "Invalid -max_nal_size, "
328  "specify a valid max_nal_size to use -slice_mode dyn\n");
329  return AVERROR(EINVAL);
330  }
331  }
332 
333  if ((*s->encoder)->InitializeExt(s->encoder, &param) != cmResultSuccess) {
334  av_log(avctx, AV_LOG_ERROR, "Initialize failed\n");
335  return AVERROR_UNKNOWN;
336  }
337 
338  if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER) {
339  SFrameBSInfo fbi = { 0 };
340  int i, size = 0;
341  (*s->encoder)->EncodeParameterSets(s->encoder, &fbi);
342  for (i = 0; i < fbi.sLayerInfo[0].iNalCount; i++)
343  size += fbi.sLayerInfo[0].pNalLengthInByte[i];
345  if (!avctx->extradata)
346  return AVERROR(ENOMEM);
347  avctx->extradata_size = size;
348  memcpy(avctx->extradata, fbi.sLayerInfo[0].pBsBuf, size);
349  }
350 
351  props = ff_add_cpb_side_data(avctx);
352  if (!props)
353  return AVERROR(ENOMEM);
354  props->max_bitrate = param.iMaxBitrate;
355  props->avg_bitrate = param.iTargetBitrate;
356 
357  return 0;
358 }
359 
360 static int svc_encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
361  const AVFrame *frame, int *got_packet)
362 {
363  SVCContext *s = avctx->priv_data;
364  SFrameBSInfo fbi = { 0 };
365  int i, ret;
366  int encoded;
367  SSourcePicture sp = { 0 };
368  int size = 0, layer, first_layer = 0;
369  int layer_size[MAX_LAYER_NUM_OF_FRAME] = { 0 };
370 
371  sp.iColorFormat = videoFormatI420;
372  for (i = 0; i < 3; i++) {
373  sp.iStride[i] = frame->linesize[i];
374  sp.pData[i] = frame->data[i];
375  }
376  sp.iPicWidth = avctx->width;
377  sp.iPicHeight = avctx->height;
378 
379  if (frame->pict_type == AV_PICTURE_TYPE_I) {
380  (*s->encoder)->ForceIntraFrame(s->encoder, true);
381  }
382 
383  encoded = (*s->encoder)->EncodeFrame(s->encoder, &sp, &fbi);
384  if (encoded != cmResultSuccess) {
385  av_log(avctx, AV_LOG_ERROR, "EncodeFrame failed\n");
386  return AVERROR_UNKNOWN;
387  }
388  if (fbi.eFrameType == videoFrameTypeSkip) {
389  s->skipped++;
390  av_log(avctx, AV_LOG_DEBUG, "frame skipped\n");
391  return 0;
392  }
393  first_layer = 0;
394  // Normal frames are returned with one single layer, while IDR
395  // frames have two layers, where the first layer contains the SPS/PPS.
396  // If using global headers, don't include the SPS/PPS in the returned
397  // packet - thus, only return one layer.
398  if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER)
399  first_layer = fbi.iLayerNum - 1;
400 
401  for (layer = first_layer; layer < fbi.iLayerNum; layer++) {
402  for (i = 0; i < fbi.sLayerInfo[layer].iNalCount; i++)
403  layer_size[layer] += fbi.sLayerInfo[layer].pNalLengthInByte[i];
404  size += layer_size[layer];
405  }
406  av_log(avctx, AV_LOG_DEBUG, "%d slices\n", fbi.sLayerInfo[fbi.iLayerNum - 1].iNalCount);
407 
408  if ((ret = ff_get_encode_buffer(avctx, avpkt, size, 0)))
409  return ret;
410 
411  size = 0;
412  for (layer = first_layer; layer < fbi.iLayerNum; layer++) {
413  memcpy(avpkt->data + size, fbi.sLayerInfo[layer].pBsBuf, layer_size[layer]);
414  size += layer_size[layer];
415  }
416  avpkt->pts = frame->pts;
417  if (fbi.eFrameType == videoFrameTypeIDR)
418  avpkt->flags |= AV_PKT_FLAG_KEY;
419  *got_packet = 1;
420  return 0;
421 }
422 
424  { "b", "0" },
425  { "g", "-1" },
426  { "qmin", "-1" },
427  { "qmax", "-1" },
428  { NULL },
429 };
430 
432  .name = "libopenh264",
433  .long_name = NULL_IF_CONFIG_SMALL("OpenH264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"),
434  .type = AVMEDIA_TYPE_VIDEO,
435  .id = AV_CODEC_ID_H264,
437  .priv_data_size = sizeof(SVCContext),
439  .encode2 = svc_encode_frame,
440  .close = svc_encode_close,
443  .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P,
444  AV_PIX_FMT_NONE },
445  .defaults = svc_enc_defaults,
446  .priv_class = &class,
447  .wrapper_name = "libopenh264",
448 };
ff_libopenh264_check_version
int ff_libopenh264_check_version(void *logctx)
Definition: libopenh264.c:49
SVCContext
Definition: libopenh264dec.c:36
AVCodec
AVCodec.
Definition: codec.h:202
AV_LOG_WARNING
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:186
FF_CODEC_CAP_INIT_THREADSAFE
#define FF_CODEC_CAP_INIT_THREADSAFE
The codec does not modify any global variables in the init function, allowing to call the init functi...
Definition: internal.h:42
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
av_clip
#define av_clip
Definition: common.h:96
init
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:31
AVERROR
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later. That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another. Frame references ownership and permissions
opt.h
FF_PROFILE_H264_CONSTRAINED_BASELINE
#define FF_PROFILE_H264_CONSTRAINED_BASELINE
Definition: avcodec.h:1565
profile
mfxU16 profile
Definition: qsvenc.c:45
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:310
internal.h
AVPacket::data
uint8_t * data
Definition: packet.h:373
AVOption
AVOption.
Definition: opt.h:247
encode.h
SVCContext::skipped
int skipped
Definition: libopenh264enc.c:51
AV_LOG_VERBOSE
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:196
mathematics.h
FFMAX
#define FFMAX(a, b)
Definition: macros.h:47
AVERROR_UNKNOWN
#define AVERROR_UNKNOWN
Unknown error, typically from an external library.
Definition: error.h:73
ff_add_cpb_side_data
AVCPBProperties * ff_add_cpb_side_data(AVCodecContext *avctx)
Add a CPB properties side data to an encoding context.
Definition: utils.c:1009
AVCodecContext::qmax
int qmax
maximum quantizer
Definition: avcodec.h:1165
AV_PKT_FLAG_KEY
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: packet.h:425
libopenh264.h
AV_CODEC_FLAG_GLOBAL_HEADER
#define AV_CODEC_FLAG_GLOBAL_HEADER
Place global headers in extradata instead of every keyframe.
Definition: avcodec.h:268
AVCodecContext::framerate
AVRational framerate
Definition: avcodec.h:1710
SVCContext::max_nal_size
int max_nal_size
Definition: libopenh264enc.c:49
options
static const AVOption options[]
Definition: libopenh264enc.c:64
AVCodecContext::thread_count
int thread_count
thread count is used to decide how many independent tasks should be passed to execute()
Definition: avcodec.h:1440
AVCodecContext::flags
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:463
FF_PROFILE_H264_HIGH
#define FF_PROFILE_H264_HIGH
Definition: avcodec.h:1568
SVCContext::coder
int coder
Definition: libopenh264enc.c:55
SVCContext::rc_mode
int rc_mode
Definition: libopenh264enc.c:58
av_reduce
int av_reduce(int *dst_num, int *dst_den, int64_t num, int64_t den, int64_t max)
Reduce a fraction.
Definition: rational.c:35
AVRational::num
int num
Numerator.
Definition: rational.h:59
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:180
FF_ARRAY_ELEMS
#define FF_ARRAY_ELEMS(a)
Definition: sinewin_tablegen.c:29
av_cold
#define av_cold
Definition: attributes.h:90
AVCodecContext::extradata_size
int extradata_size
Definition: avcodec.h:485
intreadwrite.h
s
#define s(width, name)
Definition: cbs_vp9.c:257
AVCodecContext::ticks_per_frame
int ticks_per_frame
For some codecs, the time base is closer to the field rate than the frame rate.
Definition: avcodec.h:515
av_q2d
static double av_q2d(AVRational a)
Convert an AVRational to a double.
Definition: rational.h:104
AV_CODEC_CAP_OTHER_THREADS
#define AV_CODEC_CAP_OTHER_THREADS
Codec supports multithreading through a method other than slice- or frame-level multithreading.
Definition: codec.h:127
svc_encode_frame
static int svc_encode_frame(AVCodecContext *avctx, AVPacket *avpkt, const AVFrame *frame, int *got_packet)
Definition: libopenh264enc.c:360
FF_PROFILE_UNKNOWN
#define FF_PROFILE_UNKNOWN
Definition: avcodec.h:1526
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:290
AV_LOG_DEBUG
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:201
SVCContext::av_class
const AVClass * av_class
Definition: libopenh264enc.c:44
AV_PIX_FMT_YUV420P
@ AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
AVCodecContext::rc_max_rate
int64_t rc_max_rate
maximum bitrate
Definition: avcodec.h:1194
AVCPBProperties
This structure describes the bitrate properties of an encoded bitstream.
Definition: defs.h:104
AV_CODEC_ID_H264
@ AV_CODEC_ID_H264
Definition: codec_id.h:77
AVCodecDefault
Definition: internal.h:215
LIBAVUTIL_VERSION_INT
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:66
NULL
#define NULL
Definition: coverity.c:32
AVRational
Rational number (pair of numerator and denominator).
Definition: rational.h:58
AVCodecContext::bit_rate
int64_t bit_rate
the average bitrate
Definition: avcodec.h:433
av_default_item_name
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:235
AV_PICTURE_TYPE_I
@ AV_PICTURE_TYPE_I
Intra.
Definition: avutil.h:274
SVCContext::loopfilter
int loopfilter
Definition: libopenh264enc.c:47
SM_SIZELIMITED_SLICE
#define SM_SIZELIMITED_SLICE
Definition: libopenh264enc.c:38
AVCodecContext::time_base
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented.
Definition: avcodec.h:506
FF_CODEC_CAP_AUTO_THREADS
#define FF_CODEC_CAP_AUTO_THREADS
Codec handles avctx->thread_count == 0 (auto) internally.
Definition: internal.h:81
AV_CODEC_CAP_DR1
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() or get_encode_buffer() for allocating buffers and supports custom allocators.
Definition: codec.h:52
SVCContext::encoder
ISVCEncoder * encoder
Definition: libopenh264enc.c:45
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:117
AVCodecContext::gop_size
int gop_size
the number of pictures in a group of pictures, or 0 for intra_only
Definition: avcodec.h:578
TARGET_BITRATE_DEFAULT
#define TARGET_BITRATE_DEFAULT
Definition: libopenh264enc.c:41
sp
#define sp
Definition: regdef.h:63
size
int size
Definition: twinvq_data.h:10344
DEPRECATED
#define DEPRECATED
Definition: libopenh264enc.c:63
PROFILE
#define PROFILE(name, value)
attributes.h
AVPacket::flags
int flags
A combination of AV_PKT_FLAG values.
Definition: packet.h:379
AVCPBProperties::avg_bitrate
int64_t avg_bitrate
Average bitrate of the stream, in bits per second.
Definition: defs.h:119
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:271
AVPacket::pts
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: packet.h:366
AVCodecContext::extradata
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
Definition: avcodec.h:484
SVCContext::cabac
int cabac
Definition: libopenh264enc.c:53
FF_CODEC_CAP_INIT_CLEANUP
#define FF_CODEC_CAP_INIT_CLEANUP
The codec allows calling the close function for deallocation even if the init function returned a fai...
Definition: internal.h:50
internal.h
SVCContext::skip_frames
int skip_frames
Definition: libopenh264enc.c:50
common.h
AVCPBProperties::max_bitrate
int64_t max_bitrate
Maximum bitrate of the stream, in bits per second.
Definition: defs.h:109
OFFSET
#define OFFSET(x)
Definition: libopenh264enc.c:61
av_mallocz
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:263
AVCodec::name
const char * name
Name of the codec implementation.
Definition: codec.h:209
AVCodecContext::height
int height
Definition: avcodec.h:556
avcodec.h
svc_encode_init
static av_cold int svc_encode_init(AVCodecContext *avctx)
Definition: libopenh264enc.c:130
ret
ret
Definition: filter_design.txt:187
AVClass::class_name
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
Definition: log.h:71
frame
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame For filters that do not use the this method is called when a frame is wanted on an output For a it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return or at least make progress towards producing a frame
Definition: filter_design.txt:264
SVCContext::profile
int profile
Definition: libopenh264enc.c:48
AV_INPUT_BUFFER_PADDING_SIZE
#define AV_INPUT_BUFFER_PADDING_SIZE
Definition: defs.h:40
AVCodecContext
main external API structure.
Definition: avcodec.h:383
SVCContext::slice_mode
int slice_mode
Definition: libopenh264enc.c:46
ff_get_encode_buffer
int ff_get_encode_buffer(AVCodecContext *avctx, AVPacket *avpkt, int64_t size, int flags)
Get a buffer for a packet.
Definition: encode.c:78
svc_encode_close
static av_cold int svc_encode_close(AVCodecContext *avctx)
Definition: libopenh264enc.c:119
AVCodecContext::qmin
int qmin
minimum quantizer
Definition: avcodec.h:1158
AVRational::den
int den
Denominator.
Definition: rational.h:60
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:224
AVCodecContext::profile
int profile
profile
Definition: avcodec.h:1525
VE
#define VE
Definition: libopenh264enc.c:62
ff_libopenh264_trace_callback
void ff_libopenh264_trace_callback(void *ctx, int level, const char *msg)
Definition: libopenh264.c:41
FF_PROFILE_H264_MAIN
#define FF_PROFILE_H264_MAIN
Definition: avcodec.h:1566
svc_enc_defaults
static const AVCodecDefault svc_enc_defaults[]
Definition: libopenh264enc.c:423
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AVCodecContext::slices
int slices
Number of slices.
Definition: avcodec.h:983
AVPacket
This structure stores compressed data.
Definition: packet.h:350
AVCodecContext::priv_data
void * priv_data
Definition: avcodec.h:410
AV_OPT_TYPE_BOOL
@ AV_OPT_TYPE_BOOL
Definition: opt.h:241
AVCodecContext::width
int width
picture width / height.
Definition: avcodec.h:556
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:28
rc_mode
mfxU16 rc_mode
Definition: qsvenc.c:84
AV_OPT_TYPE_CONST
@ AV_OPT_TYPE_CONST
Definition: opt.h:233
AVCodecContext::sample_aspect_ratio
AVRational sample_aspect_ratio
sample aspect ratio (0 if unknown) That is the width of a pixel divided by the height of the pixel.
Definition: avcodec.h:753
ff_libopenh264_encoder
const AVCodec ff_libopenh264_encoder
Definition: libopenh264enc.c:431