448 lines
18 KiB
C
Executable file
448 lines
18 KiB
C
Executable file
/*
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* OpenH264 video encoder
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* Copyright (C) 2014 Martin Storsjo
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <wels/codec_api.h>
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#include <wels/codec_ver.h>
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#include "libavutil/attributes.h"
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#include "libavutil/common.h"
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#include "libavutil/opt.h"
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#include "libavutil/internal.h"
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#include "libavutil/intreadwrite.h"
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#include "libavutil/mathematics.h"
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#include "avcodec.h"
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#include "internal.h"
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#include "libopenh264.h"
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#if !OPENH264_VER_AT_LEAST(1, 6)
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#define SM_SIZELIMITED_SLICE SM_DYN_SLICE
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#endif
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#define TARGET_BITRATE_DEFAULT 2*1000*1000
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typedef struct SVCContext {
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const AVClass *av_class;
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ISVCEncoder *encoder;
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int slice_mode;
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int loopfilter;
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int profile;
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int max_nal_size;
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int skip_frames;
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int skipped;
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#if FF_API_OPENH264_CABAC
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int cabac; // deprecated
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#endif
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int coder;
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// rate control mode
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int rc_mode;
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} SVCContext;
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#define OFFSET(x) offsetof(SVCContext, x)
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#define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
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#define DEPRECATED AV_OPT_FLAG_DEPRECATED
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static const AVOption options[] = {
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#if FF_API_OPENH264_SLICE_MODE
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#if OPENH264_VER_AT_LEAST(1, 6)
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{ "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" },
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#else
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{ "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" },
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#endif
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{ "fixed", "a fixed number of slices", 0, AV_OPT_TYPE_CONST, { .i64 = SM_FIXEDSLCNUM_SLICE }, 0, 0, VE, "slice_mode" },
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#if OPENH264_VER_AT_LEAST(1, 6)
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{ "dyn", "Size limited (compatibility name)", 0, AV_OPT_TYPE_CONST, { .i64 = SM_SIZELIMITED_SLICE }, 0, 0, VE, "slice_mode" },
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{ "sizelimited", "Size limited", 0, AV_OPT_TYPE_CONST, { .i64 = SM_SIZELIMITED_SLICE }, 0, 0, VE, "slice_mode" },
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#else
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{ "rowmb", "one slice per row of macroblocks", 0, AV_OPT_TYPE_CONST, { .i64 = SM_ROWMB_SLICE }, 0, 0, VE, "slice_mode" },
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{ "auto", "automatic number of slices according to number of threads", 0, AV_OPT_TYPE_CONST, { .i64 = SM_AUTO_SLICE }, 0, 0, VE, "slice_mode" },
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{ "dyn", "Dynamic slicing", 0, AV_OPT_TYPE_CONST, { .i64 = SM_DYN_SLICE }, 0, 0, VE, "slice_mode" },
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#endif
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#endif
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{ "loopfilter", "enable loop filter", OFFSET(loopfilter), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, VE },
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{ "profile", "set profile restrictions", OFFSET(profile), AV_OPT_TYPE_INT, { .i64 = FF_PROFILE_UNKNOWN }, FF_PROFILE_UNKNOWN, 0xffff, VE, "profile" },
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#define PROFILE(name, value) name, NULL, 0, AV_OPT_TYPE_CONST, { .i64 = value }, 0, 0, VE, "profile"
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{ PROFILE("constrained_baseline", FF_PROFILE_H264_CONSTRAINED_BASELINE) },
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{ PROFILE("main", FF_PROFILE_H264_MAIN) },
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{ PROFILE("high", FF_PROFILE_H264_HIGH) },
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#undef PROFILE
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{ "max_nal_size", "set maximum NAL size in bytes", OFFSET(max_nal_size), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VE },
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{ "allow_skip_frames", "allow skipping frames to hit the target bitrate", OFFSET(skip_frames), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
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#if FF_API_OPENH264_CABAC
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{ "cabac", "Enable cabac(deprecated, use coder)", OFFSET(cabac), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE|DEPRECATED },
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#endif
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{ "coder", "Coder type", OFFSET(coder), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE, "coder" },
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{ "default", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = -1 }, INT_MIN, INT_MAX, VE, "coder" },
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{ "cavlc", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, VE, "coder" },
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{ "cabac", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, VE, "coder" },
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{ "vlc", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, VE, "coder" },
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{ "ac", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, VE, "coder" },
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{ "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" },
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{ "off", "bit rate control off", 0, AV_OPT_TYPE_CONST, { .i64 = RC_OFF_MODE }, 0, 0, VE, "rc_mode" },
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{ "quality", "quality mode", 0, AV_OPT_TYPE_CONST, { .i64 = RC_QUALITY_MODE }, 0, 0, VE, "rc_mode" },
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{ "bitrate", "bitrate mode", 0, AV_OPT_TYPE_CONST, { .i64 = RC_BITRATE_MODE }, 0, 0, VE, "rc_mode" },
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{ "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" },
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#if OPENH264_VER_AT_LEAST(1, 4)
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{ "timestamp", "bit rate control based on timestamp", 0, AV_OPT_TYPE_CONST, { .i64 = RC_TIMESTAMP_MODE }, 0, 0, VE, "rc_mode" },
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#endif
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{ NULL }
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};
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static const AVClass class = {
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.class_name = "libopenh264enc",
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.item_name = av_default_item_name,
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.option = options,
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.version = LIBAVUTIL_VERSION_INT,
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};
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static av_cold int svc_encode_close(AVCodecContext *avctx)
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{
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SVCContext *s = avctx->priv_data;
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if (s->encoder)
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WelsDestroySVCEncoder(s->encoder);
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if (s->skipped > 0)
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av_log(avctx, AV_LOG_WARNING, "%d frames skipped\n", s->skipped);
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return 0;
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}
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static av_cold int svc_encode_init(AVCodecContext *avctx)
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{
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SVCContext *s = avctx->priv_data;
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SEncParamExt param = { 0 };
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int err;
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int log_level;
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WelsTraceCallback callback_function;
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AVCPBProperties *props;
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if ((err = ff_libopenh264_check_version(avctx)) < 0)
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return err;
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if (WelsCreateSVCEncoder(&s->encoder)) {
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av_log(avctx, AV_LOG_ERROR, "Unable to create encoder\n");
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return AVERROR_UNKNOWN;
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}
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// Pass all libopenh264 messages to our callback, to allow ourselves to filter them.
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log_level = WELS_LOG_DETAIL;
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(*s->encoder)->SetOption(s->encoder, ENCODER_OPTION_TRACE_LEVEL, &log_level);
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// Set the logging callback function to one that uses av_log() (see implementation above).
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callback_function = (WelsTraceCallback) ff_libopenh264_trace_callback;
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(*s->encoder)->SetOption(s->encoder, ENCODER_OPTION_TRACE_CALLBACK, &callback_function);
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// Set the AVCodecContext as the libopenh264 callback context so that it can be passed to av_log().
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(*s->encoder)->SetOption(s->encoder, ENCODER_OPTION_TRACE_CALLBACK_CONTEXT, &avctx);
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(*s->encoder)->GetDefaultParams(s->encoder, ¶m);
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param.fMaxFrameRate = 1/av_q2d(avctx->time_base);
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param.iPicWidth = avctx->width;
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param.iPicHeight = avctx->height;
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param.iTargetBitrate = avctx->bit_rate > 0 ? avctx->bit_rate : TARGET_BITRATE_DEFAULT;
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param.iMaxBitrate = FFMAX(avctx->rc_max_rate, avctx->bit_rate);
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param.iRCMode = s->rc_mode;
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if (avctx->qmax >= 0)
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param.iMaxQp = av_clip(avctx->qmax, 1, 51);
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if (avctx->qmin >= 0)
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param.iMinQp = av_clip(avctx->qmin, 1, param.iMaxQp);
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param.iTemporalLayerNum = 1;
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param.iSpatialLayerNum = 1;
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param.bEnableDenoise = 0;
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param.bEnableBackgroundDetection = 1;
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param.bEnableAdaptiveQuant = 1;
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param.bEnableFrameSkip = s->skip_frames;
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param.bEnableLongTermReference = 0;
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param.iLtrMarkPeriod = 30;
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if (avctx->gop_size >= 0)
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param.uiIntraPeriod = avctx->gop_size;
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#if OPENH264_VER_AT_LEAST(1, 4)
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param.eSpsPpsIdStrategy = CONSTANT_ID;
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#else
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param.bEnableSpsPpsIdAddition = 0;
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#endif
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param.bPrefixNalAddingCtrl = 0;
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param.iLoopFilterDisableIdc = !s->loopfilter;
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param.iEntropyCodingModeFlag = 0;
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param.iMultipleThreadIdc = avctx->thread_count;
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/* Allow specifying the libopenh264 profile through AVCodecContext. */
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if (FF_PROFILE_UNKNOWN == s->profile &&
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FF_PROFILE_UNKNOWN != avctx->profile)
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switch (avctx->profile) {
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case FF_PROFILE_H264_HIGH:
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case FF_PROFILE_H264_MAIN:
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case FF_PROFILE_H264_CONSTRAINED_BASELINE:
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s->profile = avctx->profile;
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break;
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default:
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av_log(avctx, AV_LOG_WARNING,
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"Unsupported avctx->profile: %d.\n", avctx->profile);
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break;
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}
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#if FF_API_CODER_TYPE && FF_API_OPENH264_CABAC
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FF_DISABLE_DEPRECATION_WARNINGS
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if (s->coder < 0 && avctx->coder_type == FF_CODER_TYPE_AC)
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s->coder = 1;
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if (s->coder < 0)
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s->coder = s->cabac;
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FF_ENABLE_DEPRECATION_WARNINGS
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#endif
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if (s->profile == FF_PROFILE_UNKNOWN && s->coder >= 0)
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s->profile = s->coder == 0 ? FF_PROFILE_H264_CONSTRAINED_BASELINE :
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#if OPENH264_VER_AT_LEAST(1, 8)
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FF_PROFILE_H264_HIGH;
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#else
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FF_PROFILE_H264_MAIN;
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#endif
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switch (s->profile) {
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#if OPENH264_VER_AT_LEAST(1, 8)
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case FF_PROFILE_H264_HIGH:
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param.iEntropyCodingModeFlag = 1;
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av_log(avctx, AV_LOG_VERBOSE, "Using CABAC, "
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"select EProfileIdc PRO_HIGH in libopenh264.\n");
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break;
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#else
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case FF_PROFILE_H264_MAIN:
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param.iEntropyCodingModeFlag = 1;
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av_log(avctx, AV_LOG_VERBOSE, "Using CABAC, "
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"select EProfileIdc PRO_MAIN in libopenh264.\n");
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break;
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#endif
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case FF_PROFILE_H264_CONSTRAINED_BASELINE:
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case FF_PROFILE_UNKNOWN:
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param.iEntropyCodingModeFlag = 0;
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av_log(avctx, AV_LOG_VERBOSE, "Using CAVLC, "
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"select EProfileIdc PRO_BASELINE in libopenh264.\n");
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break;
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default:
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param.iEntropyCodingModeFlag = 0;
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av_log(avctx, AV_LOG_WARNING, "Unsupported profile, "
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"select EProfileIdc PRO_BASELINE in libopenh264.\n");
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break;
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}
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param.sSpatialLayers[0].iVideoWidth = param.iPicWidth;
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param.sSpatialLayers[0].iVideoHeight = param.iPicHeight;
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param.sSpatialLayers[0].fFrameRate = param.fMaxFrameRate;
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param.sSpatialLayers[0].iSpatialBitrate = param.iTargetBitrate;
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param.sSpatialLayers[0].iMaxSpatialBitrate = param.iMaxBitrate;
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#if OPENH264_VER_AT_LEAST(1, 7)
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if (avctx->sample_aspect_ratio.num && avctx->sample_aspect_ratio.den) {
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// Table E-1.
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static const AVRational sar_idc[] = {
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{ 0, 0 }, // Unspecified (never written here).
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{ 1, 1 }, { 12, 11 }, { 10, 11 }, { 16, 11 },
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{ 40, 33 }, { 24, 11 }, { 20, 11 }, { 32, 11 },
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{ 80, 33 }, { 18, 11 }, { 15, 11 }, { 64, 33 },
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{ 160, 99 }, // Last 3 are unknown to openh264: { 4, 3 }, { 3, 2 }, { 2, 1 },
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};
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static const ESampleAspectRatio asp_idc[] = {
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ASP_UNSPECIFIED,
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ASP_1x1, ASP_12x11, ASP_10x11, ASP_16x11,
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ASP_40x33, ASP_24x11, ASP_20x11, ASP_32x11,
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ASP_80x33, ASP_18x11, ASP_15x11, ASP_64x33,
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ASP_160x99,
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};
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int num, den, i;
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av_reduce(&num, &den, avctx->sample_aspect_ratio.num,
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avctx->sample_aspect_ratio.den, 65535);
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for (i = 1; i < FF_ARRAY_ELEMS(sar_idc); i++) {
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if (num == sar_idc[i].num &&
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den == sar_idc[i].den)
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break;
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}
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if (i == FF_ARRAY_ELEMS(sar_idc)) {
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param.sSpatialLayers[0].eAspectRatio = ASP_EXT_SAR;
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param.sSpatialLayers[0].sAspectRatioExtWidth = num;
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param.sSpatialLayers[0].sAspectRatioExtHeight = den;
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} else {
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param.sSpatialLayers[0].eAspectRatio = asp_idc[i];
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}
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param.sSpatialLayers[0].bAspectRatioPresent = true;
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} else {
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param.sSpatialLayers[0].bAspectRatioPresent = false;
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}
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#endif
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if ((avctx->slices > 1) && (s->max_nal_size)) {
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av_log(avctx, AV_LOG_ERROR,
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"Invalid combination -slices %d and -max_nal_size %d.\n",
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avctx->slices, s->max_nal_size);
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return AVERROR(EINVAL);
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}
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if (avctx->slices > 1)
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s->slice_mode = SM_FIXEDSLCNUM_SLICE;
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if (s->max_nal_size)
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s->slice_mode = SM_SIZELIMITED_SLICE;
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#if OPENH264_VER_AT_LEAST(1, 6)
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param.sSpatialLayers[0].sSliceArgument.uiSliceMode = s->slice_mode;
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param.sSpatialLayers[0].sSliceArgument.uiSliceNum = avctx->slices;
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#else
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param.sSpatialLayers[0].sSliceCfg.uiSliceMode = s->slice_mode;
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param.sSpatialLayers[0].sSliceCfg.sSliceArgument.uiSliceNum = avctx->slices;
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#endif
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if (avctx->slices == 0 && s->slice_mode == SM_FIXEDSLCNUM_SLICE)
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av_log(avctx, AV_LOG_WARNING, "Slice count will be set automatically\n");
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if (s->slice_mode == SM_SIZELIMITED_SLICE) {
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if (s->max_nal_size) {
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param.uiMaxNalSize = s->max_nal_size;
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#if OPENH264_VER_AT_LEAST(1, 6)
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param.sSpatialLayers[0].sSliceArgument.uiSliceSizeConstraint = s->max_nal_size;
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#else
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param.sSpatialLayers[0].sSliceCfg.sSliceArgument.uiSliceSizeConstraint = s->max_nal_size;
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#endif
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} else {
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av_log(avctx, AV_LOG_ERROR, "Invalid -max_nal_size, "
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"specify a valid max_nal_size to use -slice_mode dyn\n");
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return AVERROR(EINVAL);
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}
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}
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if ((*s->encoder)->InitializeExt(s->encoder, ¶m) != cmResultSuccess) {
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av_log(avctx, AV_LOG_ERROR, "Initialize failed\n");
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return AVERROR_UNKNOWN;
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}
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if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER) {
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SFrameBSInfo fbi = { 0 };
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int i, size = 0;
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(*s->encoder)->EncodeParameterSets(s->encoder, &fbi);
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for (i = 0; i < fbi.sLayerInfo[0].iNalCount; i++)
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size += fbi.sLayerInfo[0].pNalLengthInByte[i];
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avctx->extradata = av_mallocz(size + AV_INPUT_BUFFER_PADDING_SIZE);
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if (!avctx->extradata)
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return AVERROR(ENOMEM);
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avctx->extradata_size = size;
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memcpy(avctx->extradata, fbi.sLayerInfo[0].pBsBuf, size);
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}
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props = ff_add_cpb_side_data(avctx);
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if (!props)
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return AVERROR(ENOMEM);
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props->max_bitrate = param.iMaxBitrate;
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props->avg_bitrate = param.iTargetBitrate;
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return 0;
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}
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static int svc_encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
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const AVFrame *frame, int *got_packet)
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{
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SVCContext *s = avctx->priv_data;
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SFrameBSInfo fbi = { 0 };
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int i, ret;
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int encoded;
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SSourcePicture sp = { 0 };
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int size = 0, layer, first_layer = 0;
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int layer_size[MAX_LAYER_NUM_OF_FRAME] = { 0 };
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sp.iColorFormat = videoFormatI420;
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for (i = 0; i < 3; i++) {
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sp.iStride[i] = frame->linesize[i];
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sp.pData[i] = frame->data[i];
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}
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sp.iPicWidth = avctx->width;
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sp.iPicHeight = avctx->height;
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if (frame->pict_type == AV_PICTURE_TYPE_I) {
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(*s->encoder)->ForceIntraFrame(s->encoder, true);
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}
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encoded = (*s->encoder)->EncodeFrame(s->encoder, &sp, &fbi);
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if (encoded != cmResultSuccess) {
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av_log(avctx, AV_LOG_ERROR, "EncodeFrame failed\n");
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return AVERROR_UNKNOWN;
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}
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if (fbi.eFrameType == videoFrameTypeSkip) {
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s->skipped++;
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av_log(avctx, AV_LOG_DEBUG, "frame skipped\n");
|
|
return 0;
|
|
}
|
|
first_layer = 0;
|
|
// Normal frames are returned with one single layer, while IDR
|
|
// frames have two layers, where the first layer contains the SPS/PPS.
|
|
// If using global headers, don't include the SPS/PPS in the returned
|
|
// packet - thus, only return one layer.
|
|
if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER)
|
|
first_layer = fbi.iLayerNum - 1;
|
|
|
|
for (layer = first_layer; layer < fbi.iLayerNum; layer++) {
|
|
for (i = 0; i < fbi.sLayerInfo[layer].iNalCount; i++)
|
|
layer_size[layer] += fbi.sLayerInfo[layer].pNalLengthInByte[i];
|
|
size += layer_size[layer];
|
|
}
|
|
av_log(avctx, AV_LOG_DEBUG, "%d slices\n", fbi.sLayerInfo[fbi.iLayerNum - 1].iNalCount);
|
|
|
|
if ((ret = ff_alloc_packet2(avctx, avpkt, size, size))) {
|
|
av_log(avctx, AV_LOG_ERROR, "Error getting output packet\n");
|
|
return ret;
|
|
}
|
|
size = 0;
|
|
for (layer = first_layer; layer < fbi.iLayerNum; layer++) {
|
|
memcpy(avpkt->data + size, fbi.sLayerInfo[layer].pBsBuf, layer_size[layer]);
|
|
size += layer_size[layer];
|
|
}
|
|
avpkt->pts = frame->pts;
|
|
if (fbi.eFrameType == videoFrameTypeIDR)
|
|
avpkt->flags |= AV_PKT_FLAG_KEY;
|
|
*got_packet = 1;
|
|
return 0;
|
|
}
|
|
|
|
static const AVCodecDefault svc_enc_defaults[] = {
|
|
{ "b", "0" },
|
|
{ "g", "-1" },
|
|
{ "qmin", "-1" },
|
|
{ "qmax", "-1" },
|
|
{ NULL },
|
|
};
|
|
|
|
AVCodec ff_libopenh264_encoder = {
|
|
.name = "libopenh264",
|
|
.long_name = NULL_IF_CONFIG_SMALL("OpenH264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"),
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.id = AV_CODEC_ID_H264,
|
|
.priv_data_size = sizeof(SVCContext),
|
|
.init = svc_encode_init,
|
|
.encode2 = svc_encode_frame,
|
|
.close = svc_encode_close,
|
|
.capabilities = AV_CODEC_CAP_AUTO_THREADS,
|
|
.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,
|
|
.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P,
|
|
AV_PIX_FMT_NONE },
|
|
.defaults = svc_enc_defaults,
|
|
.priv_class = &class,
|
|
.wrapper_name = "libopenh264",
|
|
};
|