1 // A class to encode audio (using ffmpeg) and send it to a Mux.
3 #ifndef _AUDIO_ENCODER_H
4 #define _AUDIO_ENCODER_H 1
11 #include <libavcodec/avcodec.h>
12 #include <libavresample/avresample.h>
13 #include <libavutil/frame.h>
18 static inline void avcodec_parameters_free_unique(AVCodecParameters *codec_par)
20 avcodec_parameters_free(&codec_par);
23 typedef std::unique_ptr<AVCodecParameters, decltype(avcodec_parameters_free_unique)*>
24 AVCodecParametersWithDeleter;
28 AudioEncoder(const std::string &codec_name, int bit_rate, const AVOutputFormat *oformat);
31 void add_mux(Mux *mux) { // Does not take ownership.
34 void encode_audio(const std::vector<float> &audio, int64_t audio_pts);
35 void encode_last_audio();
37 AVCodecParametersWithDeleter get_codec_parameters();
40 void encode_audio_one_frame(const float *audio, size_t num_samples, int64_t audio_pts);
42 std::vector<float> audio_queue;
43 int64_t last_pts = 0; // The first pts after all audio we've encoded.
46 AVAudioResampleContext *resampler;
47 AVFrame *audio_frame = nullptr;
48 std::vector<Mux *> muxes;
51 #endif // !defined(_AUDIO_ENCODER_H)