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Added libx264 library, change to default h264 codec
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,162 @@ | ||
| //============================================================================== | ||
| // | ||
| // Transcoder | ||
| // | ||
| // Created by Kwon Keuk Han | ||
| // Copyright (c) 2018 AirenSoft. All rights reserved. | ||
| // | ||
| //============================================================================== | ||
| #include "encoder_avc_x264.h" | ||
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| #include <unistd.h> | ||
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| #include "../../transcoder_private.h" | ||
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| bool EncoderAVCx264::SetCodecParams() | ||
| { | ||
| _codec_context->bit_rate = GetRefTrack()->GetBitrate(); | ||
| _codec_context->rc_min_rate = _codec_context->rc_max_rate = _codec_context->bit_rate; | ||
| _codec_context->rc_buffer_size = static_cast<int>(_codec_context->bit_rate / 2); | ||
| _codec_context->framerate = ::av_d2q((GetRefTrack()->GetFrameRateByConfig() > 0) ? GetRefTrack()->GetFrameRateByConfig() : GetRefTrack()->GetEstimateFrameRate(), AV_TIME_BASE); | ||
| _codec_context->sample_aspect_ratio = ::av_make_q(1, 1); | ||
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| // From avcodec.h: | ||
| // For some codecs, the time base is closer to the field rate than the frame rate. | ||
| // Most notably, H.264 and MPEG-2 specify time_base as half of frame duration | ||
| // if no telecine is used ... | ||
| // Set to time_base ticks per frame. Default 1, e.g., H.264/MPEG-2 set it to 2. | ||
| _codec_context->ticks_per_frame = 2; | ||
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| // From avcodec.h: | ||
| // For fixed-fps content, timebase should be 1/framerate and timestamp increments should be identically 1. | ||
| // This often, but not always is the inverse of the frame rate or field rate for video. 1/time_base is not the average frame rate if the frame rate is not constant. | ||
| _codec_context->time_base = (AVRational){GetRefTrack()->GetTimeBase().GetNum(), GetRefTrack()->GetTimeBase().GetDen()}; | ||
| _codec_context->max_b_frames = GetRefTrack()->GetBFrames(); | ||
| _codec_context->pix_fmt = (AVPixelFormat)GetSupportedFormat(); | ||
| _codec_context->width = GetRefTrack()->GetWidth(); | ||
| _codec_context->height = GetRefTrack()->GetHeight(); | ||
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| // Keyframe Interval | ||
| //@see transcoder_encoder.cpp / force_keyframe_by_time_interval | ||
| auto key_frame_interval_type = GetRefTrack()->GetKeyFrameIntervalTypeByConfig(); | ||
| if (key_frame_interval_type == cmn::KeyFrameIntervalType::TIME) | ||
| { | ||
| _codec_context->gop_size = (int32_t)(GetRefTrack()->GetFrameRate() * (double)GetRefTrack()->GetKeyFrameInterval() / 1000 * 2); | ||
| } | ||
| else if (key_frame_interval_type == cmn::KeyFrameIntervalType::FRAME) | ||
| { | ||
| _codec_context->gop_size = (GetRefTrack()->GetKeyFrameInterval() == 0) ? (_codec_context->framerate.num / _codec_context->framerate.den) : GetRefTrack()->GetKeyFrameInterval(); | ||
| } | ||
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| // -1(Default) => FFMIN(FFMAX(4, av_cpu_count() / 3), 8) | ||
| // 0 => Auto | ||
| // >1 => Set | ||
| _codec_context->thread_count = GetRefTrack()->GetThreadCount() < 0 ? FFMIN(FFMAX(4, av_cpu_count() / 3), 8) : GetRefTrack()->GetThreadCount(); | ||
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| // Preset | ||
| if (GetRefTrack()->GetPreset() == "slower") | ||
| { | ||
| ::av_opt_set(_codec_context->priv_data, "preset", "slower", 0); | ||
| } | ||
| else if (GetRefTrack()->GetPreset() == "slow") | ||
| { | ||
| ::av_opt_set(_codec_context->priv_data, "preset", "slow", 0); | ||
| } | ||
| else if (GetRefTrack()->GetPreset() == "medium") | ||
| { | ||
| ::av_opt_set(_codec_context->priv_data, "preset", "medium", 0); | ||
| } | ||
| else if (GetRefTrack()->GetPreset() == "fast") | ||
| { | ||
| ::av_opt_set(_codec_context->priv_data, "preset", "fast", 0); | ||
| } | ||
| else if (GetRefTrack()->GetPreset() == "faster") | ||
| { | ||
| ::av_opt_set(_codec_context->priv_data, "preset", "faster", 0); | ||
| } | ||
| else | ||
| { | ||
| // Default | ||
| ::av_opt_set(_codec_context->priv_data, "preset", "faster", 0); | ||
| } | ||
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| // Profile | ||
| ::av_opt_set(_codec_context->priv_data, "profile", "main", 0); | ||
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| // Tune | ||
| ::av_opt_set(_codec_context->priv_data, "tune", "zerolatency", 0); | ||
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| // Remove the sliced-thread option from encoding delay. Browser compatibility in MAC environment | ||
| ::av_opt_set(_codec_context->priv_data, "x264opts", | ||
| ov::String::FormatString( | ||
| "bframes=%d:sliced-threads=0:b-adapt=1:no-scenecut:keyint=%d:min-keyint=%d", | ||
| GetRefTrack()->GetBFrames(), | ||
| _codec_context->gop_size, | ||
| _codec_context->gop_size) | ||
| .CStr(), | ||
| 0); | ||
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| _bitstream_format = cmn::BitstreamFormat::H264_ANNEXB; | ||
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| _packet_type = cmn::PacketType::NALU; | ||
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| return true; | ||
| } | ||
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| // Notes. | ||
| // | ||
| // - B-frame must be disabled. because, WEBRTC does not support B-Frame. | ||
| // | ||
| bool EncoderAVCx264::Configure(std::shared_ptr<MediaTrack> context) | ||
| { | ||
| if (TranscodeEncoder::Configure(context) == false) | ||
| { | ||
| return false; | ||
| } | ||
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| auto codec_id = GetCodecID(); | ||
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| const AVCodec *codec = ::avcodec_find_encoder_by_name("libx264"); | ||
| if (codec == nullptr) | ||
| { | ||
| logte("Could not find encoder: %s (%d)", ::avcodec_get_name(codec_id), codec_id); | ||
| return false; | ||
| } | ||
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| _codec_context = ::avcodec_alloc_context3(codec); | ||
| if (_codec_context == nullptr) | ||
| { | ||
| logte("Could not allocate codec context for %s (%d)", ::avcodec_get_name(GetCodecID()), GetCodecID()); | ||
| return false; | ||
| } | ||
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| if (SetCodecParams() == false) | ||
| { | ||
| logte("Could not set codec parameters for %s (%d)", ::avcodec_get_name(GetCodecID()), GetCodecID()); | ||
| return false; | ||
| } | ||
| if (::avcodec_open2(_codec_context, _codec_context->codec, nullptr) < 0) | ||
| { | ||
| logte("Could not open codec: %s (%d)", ::avcodec_get_name(GetCodecID()), GetCodecID()); | ||
| return false; | ||
| } | ||
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| // Generates a thread that reads and encodes frames in the input_buffer queue and places them in the output queue. | ||
| try | ||
| { | ||
| _kill_flag = false; | ||
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| _codec_thread = std::thread(&EncoderAVCx264::CodecThread, this); | ||
| pthread_setname_np(_codec_thread.native_handle(), ov::String::FormatString("Enc%s", avcodec_get_name(GetCodecID())).CStr()); | ||
| } | ||
| catch (const std::system_error &e) | ||
| { | ||
| logte("Failed to start encoder thread."); | ||
| _kill_flag = true; | ||
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| return false; | ||
| } | ||
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| return true; | ||
| } |
Oops, something went wrong.
Are you sure that folder is maintained? Revision 2245 is quite old, current one is 3194. Sadly videolan does not provide proper versioning for x264, I guess you need to check https://artifacts.videolan.org/x264/release-debian-amd64/ and use the noted commit hash: https://code.videolan.org/videolan/x264/-/archive/master/x264-1243d9f.tar.bz2