114 lines
3.2 KiB
C++
114 lines
3.2 KiB
C++
/***
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Olive - Non-Linear Video Editor
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Copyright (C) 2022 Olive Team
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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***/
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#ifndef FFMPEGENCODER_H
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#define FFMPEGENCODER_H
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extern "C" {
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#include <libavcodec/avcodec.h>
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#include <libavfilter/avfilter.h>
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#include <libavformat/avformat.h>
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#include <libswresample/swresample.h>
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#include <libavutil/opt.h>
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}
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#include "codec/encoder.h"
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namespace olive {
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class FFmpegEncoder : public Encoder
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{
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Q_OBJECT
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public:
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FFmpegEncoder(const EncodingParams ¶ms);
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virtual QStringList GetPixelFormatsForCodec(ExportCodec::Codec c) const override;
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virtual std::vector<SampleFormat> GetSampleFormatsForCodec(ExportCodec::Codec c) const override;
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virtual bool Open() override;
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virtual bool WriteFrame(olive::FramePtr frame, olive::core::rational time) override;
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virtual bool WriteAudio(const olive::SampleBuffer &audio) override;
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bool WriteAudioData(const AudioParams &audio_params, const uint8_t **data, int input_sample_count);
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virtual bool WriteSubtitle(const SubtitleBlock *sub_block) override;
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virtual void Close() override;
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virtual PixelFormat GetDesiredPixelFormat() const override
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{
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return video_conversion_fmt_;
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}
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private:
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/**
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* @brief Handle an FFmpeg error code
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*
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* Uses the FFmpeg API to retrieve a descriptive string for this error code and sends it to Error(). As such, this
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* function also automatically closes the Decoder.
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*
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* @param error_code
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*/
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void FFmpegError(const QString &context, int error_code);
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bool WriteAVFrame(AVFrame* frame, AVCodecContext *codec_ctx, AVStream *stream);
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bool InitializeStream(enum AVMediaType type, AVStream** stream, AVCodecContext** codec_ctx, const ExportCodec::Codec &codec);
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bool InitializeCodecContext(AVStream** stream, AVCodecContext** codec_ctx, const AVCodec* codec);
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bool SetupCodecContext(AVStream *stream, AVCodecContext *codec_ctx, const AVCodec *codec);
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void FlushEncoders();
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void FlushCodecCtx(AVCodecContext* codec_ctx, AVStream *stream);
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bool InitializeResampleContext(const AudioParams &audio);
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static const AVCodec *GetEncoder(ExportCodec::Codec c, SampleFormat aformat);
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AVFormatContext* fmt_ctx_;
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AVStream* video_stream_;
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AVCodecContext* video_codec_ctx_;
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AVFilterGraph *video_scale_ctx_;
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AVFilterContext *video_buffersrc_ctx_;
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AVFilterContext *video_buffersink_ctx_;
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PixelFormat video_conversion_fmt_;
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AVStream* audio_stream_;
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AVCodecContext* audio_codec_ctx_;
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SwrContext* audio_resample_ctx_;
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AVFrame* audio_frame_;
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int audio_max_samples_;
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int audio_frame_offset_;
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int audio_write_count_;
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AVStream* subtitle_stream_;
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AVCodecContext* subtitle_codec_ctx_;
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bool open_;
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};
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}
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#endif // FFMPEGENCODER_H
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