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 "codec_internal.h" 34#include "encode.h" 35#include "internal.h" 36#include "libopenh264.h" 37 38#if !OPENH264_VER_AT_LEAST(1, 6) 39#define SM_SIZELIMITED_SLICE SM_DYN_SLICE 40#endif 41 42#define TARGET_BITRATE_DEFAULT 2*1000*1000 43 44typedef struct SVCContext { 45 const AVClass *av_class; 46 ISVCEncoder *encoder; 47 int slice_mode; 48 int loopfilter; 49 int profile; 50 int max_nal_size; 51 int skip_frames; 52 int skipped; 53#if FF_API_OPENH264_CABAC 54 int cabac; // deprecated 55#endif 56 int coder; 57 58 // rate control mode 59 int rc_mode; 60} SVCContext; 61 62#define OFFSET(x) offsetof(SVCContext, x) 63#define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM 64#define DEPRECATED AV_OPT_FLAG_DEPRECATED 65static const AVOption options[] = { 66#if FF_API_OPENH264_SLICE_MODE 67#if OPENH264_VER_AT_LEAST(1, 6) 68 { "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" }, 69#else 70 { "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" }, 71#endif 72 { "fixed", "a fixed number of slices", 0, AV_OPT_TYPE_CONST, { .i64 = SM_FIXEDSLCNUM_SLICE }, 0, 0, VE, "slice_mode" }, 73#if OPENH264_VER_AT_LEAST(1, 6) 74 { "dyn", "Size limited (compatibility name)", 0, AV_OPT_TYPE_CONST, { .i64 = SM_SIZELIMITED_SLICE }, 0, 0, VE, "slice_mode" }, 75 { "sizelimited", "Size limited", 0, AV_OPT_TYPE_CONST, { .i64 = SM_SIZELIMITED_SLICE }, 0, 0, VE, "slice_mode" }, 76#else 77 { "rowmb", "one slice per row of macroblocks", 0, AV_OPT_TYPE_CONST, { .i64 = SM_ROWMB_SLICE }, 0, 0, VE, "slice_mode" }, 78 { "auto", "automatic number of slices according to number of threads", 0, AV_OPT_TYPE_CONST, { .i64 = SM_AUTO_SLICE }, 0, 0, VE, "slice_mode" }, 79 { "dyn", "Dynamic slicing", 0, AV_OPT_TYPE_CONST, { .i64 = SM_DYN_SLICE }, 0, 0, VE, "slice_mode" }, 80#endif 81#endif 82 { "loopfilter", "enable loop filter", OFFSET(loopfilter), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, VE }, 83 { "profile", "set profile restrictions", OFFSET(profile), AV_OPT_TYPE_INT, { .i64 = FF_PROFILE_UNKNOWN }, FF_PROFILE_UNKNOWN, 0xffff, VE, "profile" }, 84#define PROFILE(name, value) name, NULL, 0, AV_OPT_TYPE_CONST, { .i64 = value }, 0, 0, VE, "profile" 85 { PROFILE("constrained_baseline", FF_PROFILE_H264_CONSTRAINED_BASELINE) }, 86 { PROFILE("main", FF_PROFILE_H264_MAIN) }, 87 { PROFILE("high", FF_PROFILE_H264_HIGH) }, 88#undef PROFILE 89 { "max_nal_size", "set maximum NAL size in bytes", OFFSET(max_nal_size), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VE }, 90 { "allow_skip_frames", "allow skipping frames to hit the target bitrate", OFFSET(skip_frames), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE }, 91#if FF_API_OPENH264_CABAC 92 { "cabac", "Enable cabac(deprecated, use coder)", OFFSET(cabac), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE|DEPRECATED }, 93#endif 94 { "coder", "Coder type", OFFSET(coder), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE, "coder" }, 95 { "default", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = -1 }, INT_MIN, INT_MAX, VE, "coder" }, 96 { "cavlc", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, VE, "coder" }, 97 { "cabac", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, VE, "coder" }, 98 { "vlc", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, VE, "coder" }, 99 { "ac", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, VE, "coder" }, 100 101 { "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" }, 102 { "off", "bit rate control off", 0, AV_OPT_TYPE_CONST, { .i64 = RC_OFF_MODE }, 0, 0, VE, "rc_mode" }, 103 { "quality", "quality mode", 0, AV_OPT_TYPE_CONST, { .i64 = RC_QUALITY_MODE }, 0, 0, VE, "rc_mode" }, 104 { "bitrate", "bitrate mode", 0, AV_OPT_TYPE_CONST, { .i64 = RC_BITRATE_MODE }, 0, 0, VE, "rc_mode" }, 105 { "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" }, 106#if OPENH264_VER_AT_LEAST(1, 4) 107 { "timestamp", "bit rate control based on timestamp", 0, AV_OPT_TYPE_CONST, { .i64 = RC_TIMESTAMP_MODE }, 0, 0, VE, "rc_mode" }, 108#endif 109 110 { NULL } 111}; 112 113static const AVClass class = { 114 .class_name = "libopenh264enc", 115 .item_name = av_default_item_name, 116 .option = options, 117 .version = LIBAVUTIL_VERSION_INT, 118}; 119 120static av_cold int svc_encode_close(AVCodecContext *avctx) 121{ 122 SVCContext *s = avctx->priv_data; 123 124 if (s->encoder) 125 WelsDestroySVCEncoder(s->encoder); 126 if (s->skipped > 0) 127 av_log(avctx, AV_LOG_WARNING, "%d frames skipped\n", s->skipped); 128 return 0; 129} 130 131static av_cold int svc_encode_init(AVCodecContext *avctx) 132{ 133 SVCContext *s = avctx->priv_data; 134 SEncParamExt param = { 0 }; 135 int err; 136 int log_level; 137 WelsTraceCallback callback_function; 138 AVCPBProperties *props; 139 140 if ((err = ff_libopenh264_check_version(avctx)) < 0) 141 return AVERROR_ENCODER_NOT_FOUND; 142 143 if (WelsCreateSVCEncoder(&s->encoder)) { 144 av_log(avctx, AV_LOG_ERROR, "Unable to create encoder\n"); 145 return AVERROR_UNKNOWN; 146 } 147 148 // Pass all libopenh264 messages to our callback, to allow ourselves to filter them. 149 log_level = WELS_LOG_DETAIL; 150 (*s->encoder)->SetOption(s->encoder, ENCODER_OPTION_TRACE_LEVEL, &log_level); 151 152 // Set the logging callback function to one that uses av_log() (see implementation above). 153 callback_function = (WelsTraceCallback) ff_libopenh264_trace_callback; 154 (*s->encoder)->SetOption(s->encoder, ENCODER_OPTION_TRACE_CALLBACK, &callback_function); 155 156 // Set the AVCodecContext as the libopenh264 callback context so that it can be passed to av_log(). 157 (*s->encoder)->SetOption(s->encoder, ENCODER_OPTION_TRACE_CALLBACK_CONTEXT, &avctx); 158 159 (*s->encoder)->GetDefaultParams(s->encoder, ¶m); 160 161 if (avctx->framerate.num > 0 && avctx->framerate.den > 0) { 162 param.fMaxFrameRate = av_q2d(avctx->framerate); 163 } else { 164 if (avctx->ticks_per_frame > INT_MAX / avctx->time_base.num) { 165 av_log(avctx, AV_LOG_ERROR, 166 "Could not set framerate for libopenh264enc: integer overflow\n"); 167 return AVERROR(EINVAL); 168 } 169 param.fMaxFrameRate = 1.0 / av_q2d(avctx->time_base) / FFMAX(avctx->ticks_per_frame, 1); 170 } 171 param.iPicWidth = avctx->width; 172 param.iPicHeight = avctx->height; 173 param.iTargetBitrate = avctx->bit_rate > 0 ? avctx->bit_rate : TARGET_BITRATE_DEFAULT; 174 param.iMaxBitrate = FFMAX(avctx->rc_max_rate, avctx->bit_rate); 175 param.iRCMode = s->rc_mode; 176 if (avctx->qmax >= 0) 177 param.iMaxQp = av_clip(avctx->qmax, 1, 51); 178 if (avctx->qmin >= 0) 179 param.iMinQp = av_clip(avctx->qmin, 1, param.iMaxQp); 180 param.iTemporalLayerNum = 1; 181 param.iSpatialLayerNum = 1; 182 param.bEnableDenoise = 0; 183 param.bEnableBackgroundDetection = 1; 184 param.bEnableAdaptiveQuant = 1; 185 param.bEnableFrameSkip = s->skip_frames; 186 param.bEnableLongTermReference = 0; 187 param.iLtrMarkPeriod = 30; 188 if (avctx->gop_size >= 0) 189 param.uiIntraPeriod = avctx->gop_size; 190#if OPENH264_VER_AT_LEAST(1, 4) 191 param.eSpsPpsIdStrategy = CONSTANT_ID; 192#else 193 param.bEnableSpsPpsIdAddition = 0; 194#endif 195 param.bPrefixNalAddingCtrl = 0; 196 param.iLoopFilterDisableIdc = !s->loopfilter; 197 param.iEntropyCodingModeFlag = s->coder >= 0 ? s->coder : 1; 198 param.iMultipleThreadIdc = avctx->thread_count; 199 200 /* Allow specifying the libopenh264 profile through AVCodecContext. */ 201 if (FF_PROFILE_UNKNOWN == s->profile && 202 FF_PROFILE_UNKNOWN != avctx->profile) 203 switch (avctx->profile) { 204 case FF_PROFILE_H264_HIGH: 205 case FF_PROFILE_H264_MAIN: 206 case FF_PROFILE_H264_CONSTRAINED_BASELINE: 207 s->profile = avctx->profile; 208 break; 209 default: 210 av_log(avctx, AV_LOG_WARNING, 211 "Unsupported avctx->profile: %d.\n", avctx->profile); 212 break; 213 } 214 215 if (s->profile == FF_PROFILE_UNKNOWN && s->coder >= 0) 216 s->profile = s->coder == 0 ? FF_PROFILE_H264_CONSTRAINED_BASELINE : 217#if OPENH264_VER_AT_LEAST(1, 8) 218 FF_PROFILE_H264_HIGH; 219#else 220 FF_PROFILE_H264_MAIN; 221#endif 222 223 switch (s->profile) { 224 case FF_PROFILE_H264_HIGH: 225 av_log(avctx, AV_LOG_VERBOSE, "Using %s, " 226 "select EProfileIdc PRO_HIGH in libopenh264.\n", 227 param.iEntropyCodingModeFlag ? "CABAC" : "CAVLC"); 228 break; 229 case FF_PROFILE_H264_MAIN: 230 av_log(avctx, AV_LOG_VERBOSE, "Using %s, " 231 "select EProfileIdc PRO_MAIN in libopenh264.\n", 232 param.iEntropyCodingModeFlag ? "CABAC" : "CAVLC"); 233 break; 234 case FF_PROFILE_H264_CONSTRAINED_BASELINE: 235 case FF_PROFILE_UNKNOWN: 236 s->profile = FF_PROFILE_H264_CONSTRAINED_BASELINE; 237 param.iEntropyCodingModeFlag = 0; 238 av_log(avctx, AV_LOG_VERBOSE, "Using CAVLC, " 239 "select EProfileIdc PRO_BASELINE in libopenh264.\n"); 240 break; 241 default: 242 s->profile = FF_PROFILE_H264_CONSTRAINED_BASELINE; 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 param.sSpatialLayers[0].uiProfileIdc = s->profile; 255 256#if OPENH264_VER_AT_LEAST(1, 7) 257 if (avctx->sample_aspect_ratio.num && avctx->sample_aspect_ratio.den) { 258 // Table E-1. 259 static const AVRational sar_idc[] = { 260 { 0, 0 }, // Unspecified (never written here). 261 { 1, 1 }, { 12, 11 }, { 10, 11 }, { 16, 11 }, 262 { 40, 33 }, { 24, 11 }, { 20, 11 }, { 32, 11 }, 263 { 80, 33 }, { 18, 11 }, { 15, 11 }, { 64, 33 }, 264 { 160, 99 }, // Last 3 are unknown to openh264: { 4, 3 }, { 3, 2 }, { 2, 1 }, 265 }; 266 static const ESampleAspectRatio asp_idc[] = { 267 ASP_UNSPECIFIED, 268 ASP_1x1, ASP_12x11, ASP_10x11, ASP_16x11, 269 ASP_40x33, ASP_24x11, ASP_20x11, ASP_32x11, 270 ASP_80x33, ASP_18x11, ASP_15x11, ASP_64x33, 271 ASP_160x99, 272 }; 273 int num, den, i; 274 275 av_reduce(&num, &den, avctx->sample_aspect_ratio.num, 276 avctx->sample_aspect_ratio.den, 65535); 277 278 for (i = 1; i < FF_ARRAY_ELEMS(sar_idc); i++) { 279 if (num == sar_idc[i].num && 280 den == sar_idc[i].den) 281 break; 282 } 283 if (i == FF_ARRAY_ELEMS(sar_idc)) { 284 param.sSpatialLayers[0].eAspectRatio = ASP_EXT_SAR; 285 param.sSpatialLayers[0].sAspectRatioExtWidth = num; 286 param.sSpatialLayers[0].sAspectRatioExtHeight = den; 287 } else { 288 param.sSpatialLayers[0].eAspectRatio = asp_idc[i]; 289 } 290 param.sSpatialLayers[0].bAspectRatioPresent = true; 291 } else { 292 param.sSpatialLayers[0].bAspectRatioPresent = false; 293 } 294#endif 295 296 if ((avctx->slices > 1) && (s->max_nal_size)) { 297 av_log(avctx, AV_LOG_ERROR, 298 "Invalid combination -slices %d and -max_nal_size %d.\n", 299 avctx->slices, s->max_nal_size); 300 return AVERROR(EINVAL); 301 } 302 303 if (avctx->slices > 1) 304 s->slice_mode = SM_FIXEDSLCNUM_SLICE; 305 306 if (s->max_nal_size) 307 s->slice_mode = SM_SIZELIMITED_SLICE; 308 309#if OPENH264_VER_AT_LEAST(1, 6) 310 param.sSpatialLayers[0].sSliceArgument.uiSliceMode = s->slice_mode; 311 param.sSpatialLayers[0].sSliceArgument.uiSliceNum = avctx->slices; 312#else 313 param.sSpatialLayers[0].sSliceCfg.uiSliceMode = s->slice_mode; 314 param.sSpatialLayers[0].sSliceCfg.sSliceArgument.uiSliceNum = avctx->slices; 315#endif 316 if (avctx->slices == 0 && s->slice_mode == SM_FIXEDSLCNUM_SLICE) 317 av_log(avctx, AV_LOG_WARNING, "Slice count will be set automatically\n"); 318 319 if (s->slice_mode == SM_SIZELIMITED_SLICE) { 320 if (s->max_nal_size) { 321 param.uiMaxNalSize = s->max_nal_size; 322#if OPENH264_VER_AT_LEAST(1, 6) 323 param.sSpatialLayers[0].sSliceArgument.uiSliceSizeConstraint = s->max_nal_size; 324#else 325 param.sSpatialLayers[0].sSliceCfg.sSliceArgument.uiSliceSizeConstraint = s->max_nal_size; 326#endif 327 } else { 328 av_log(avctx, AV_LOG_ERROR, "Invalid -max_nal_size, " 329 "specify a valid max_nal_size to use -slice_mode dyn\n"); 330 return AVERROR(EINVAL); 331 } 332 } 333 334#if OPENH264_VER_AT_LEAST(1, 6) 335 param.sSpatialLayers[0].uiVideoFormat = VF_UNDEF; 336 if (avctx->color_range != AVCOL_RANGE_UNSPECIFIED) { 337 param.sSpatialLayers[0].bVideoSignalTypePresent = true; 338 param.sSpatialLayers[0].bFullRange = (avctx->color_range == AVCOL_RANGE_JPEG); 339 } 340 341 if (avctx->colorspace != AVCOL_SPC_UNSPECIFIED || 342 avctx->color_primaries != AVCOL_PRI_UNSPECIFIED || 343 avctx->color_trc != AVCOL_TRC_UNSPECIFIED) { 344 param.sSpatialLayers[0].bVideoSignalTypePresent = true; 345 param.sSpatialLayers[0].bColorDescriptionPresent = true; 346 } 347 348 if (avctx->colorspace != AVCOL_SPC_UNSPECIFIED) 349 param.sSpatialLayers[0].uiColorMatrix = avctx->colorspace; 350 if (avctx->color_primaries != AVCOL_PRI_UNSPECIFIED) 351 param.sSpatialLayers[0].uiColorPrimaries = avctx->color_primaries; 352 if (avctx->color_trc != AVCOL_TRC_UNSPECIFIED) 353 param.sSpatialLayers[0].uiTransferCharacteristics = avctx->color_trc; 354#endif 355 356 if ((*s->encoder)->InitializeExt(s->encoder, ¶m) != cmResultSuccess) { 357 av_log(avctx, AV_LOG_ERROR, "Initialize failed\n"); 358 return AVERROR_UNKNOWN; 359 } 360 361 if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER) { 362 SFrameBSInfo fbi = { 0 }; 363 int i, size = 0; 364 (*s->encoder)->EncodeParameterSets(s->encoder, &fbi); 365 for (i = 0; i < fbi.sLayerInfo[0].iNalCount; i++) 366 size += fbi.sLayerInfo[0].pNalLengthInByte[i]; 367 avctx->extradata = av_mallocz(size + AV_INPUT_BUFFER_PADDING_SIZE); 368 if (!avctx->extradata) 369 return AVERROR(ENOMEM); 370 avctx->extradata_size = size; 371 memcpy(avctx->extradata, fbi.sLayerInfo[0].pBsBuf, size); 372 } 373 374 props = ff_add_cpb_side_data(avctx); 375 if (!props) 376 return AVERROR(ENOMEM); 377 props->max_bitrate = param.iMaxBitrate; 378 props->avg_bitrate = param.iTargetBitrate; 379 380 return 0; 381} 382 383static int svc_encode_frame(AVCodecContext *avctx, AVPacket *avpkt, 384 const AVFrame *frame, int *got_packet) 385{ 386 SVCContext *s = avctx->priv_data; 387 SFrameBSInfo fbi = { 0 }; 388 int i, ret; 389 int encoded; 390 SSourcePicture sp = { 0 }; 391 int size = 0, layer, first_layer = 0; 392 int layer_size[MAX_LAYER_NUM_OF_FRAME] = { 0 }; 393 394 sp.iColorFormat = videoFormatI420; 395 for (i = 0; i < 3; i++) { 396 sp.iStride[i] = frame->linesize[i]; 397 sp.pData[i] = frame->data[i]; 398 } 399 sp.iPicWidth = avctx->width; 400 sp.iPicHeight = avctx->height; 401 402 if (frame->pict_type == AV_PICTURE_TYPE_I) { 403 (*s->encoder)->ForceIntraFrame(s->encoder, true); 404 } 405 406 encoded = (*s->encoder)->EncodeFrame(s->encoder, &sp, &fbi); 407 if (encoded != cmResultSuccess) { 408 av_log(avctx, AV_LOG_ERROR, "EncodeFrame failed\n"); 409 return AVERROR_UNKNOWN; 410 } 411 if (fbi.eFrameType == videoFrameTypeSkip) { 412 s->skipped++; 413 av_log(avctx, AV_LOG_DEBUG, "frame skipped\n"); 414 return 0; 415 } 416 first_layer = 0; 417 // Normal frames are returned with one single layer, while IDR 418 // frames have two layers, where the first layer contains the SPS/PPS. 419 // If using global headers, don't include the SPS/PPS in the returned 420 // packet - thus, only return one layer. 421 if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER) 422 first_layer = fbi.iLayerNum - 1; 423 424 for (layer = first_layer; layer < fbi.iLayerNum; layer++) { 425 for (i = 0; i < fbi.sLayerInfo[layer].iNalCount; i++) 426 layer_size[layer] += fbi.sLayerInfo[layer].pNalLengthInByte[i]; 427 size += layer_size[layer]; 428 } 429 av_log(avctx, AV_LOG_DEBUG, "%d slices\n", fbi.sLayerInfo[fbi.iLayerNum - 1].iNalCount); 430 431 if ((ret = ff_get_encode_buffer(avctx, avpkt, size, 0))) 432 return ret; 433 434 size = 0; 435 for (layer = first_layer; layer < fbi.iLayerNum; layer++) { 436 memcpy(avpkt->data + size, fbi.sLayerInfo[layer].pBsBuf, layer_size[layer]); 437 size += layer_size[layer]; 438 } 439 avpkt->pts = frame->pts; 440 if (fbi.eFrameType == videoFrameTypeIDR) 441 avpkt->flags |= AV_PKT_FLAG_KEY; 442 *got_packet = 1; 443 return 0; 444} 445 446static const FFCodecDefault svc_enc_defaults[] = { 447 { "b", "0" }, 448 { "g", "-1" }, 449 { "qmin", "-1" }, 450 { "qmax", "-1" }, 451 { NULL }, 452}; 453 454const FFCodec ff_libopenh264_encoder = { 455 .p.name = "libopenh264", 456 .p.long_name = NULL_IF_CONFIG_SMALL("OpenH264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"), 457 .p.type = AVMEDIA_TYPE_VIDEO, 458 .p.id = AV_CODEC_ID_H264, 459 .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_OTHER_THREADS, 460 .priv_data_size = sizeof(SVCContext), 461 .init = svc_encode_init, 462 FF_CODEC_ENCODE_CB(svc_encode_frame), 463 .close = svc_encode_close, 464 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP | 465 FF_CODEC_CAP_AUTO_THREADS, 466 .p.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, 467 AV_PIX_FMT_NONE }, 468 .defaults = svc_enc_defaults, 469 .p.priv_class = &class, 470 .p.wrapper_name = "libopenh264", 471}; 472