1 // A class to orchestrate the concept of video encoding. Will keep track of
2 // the muxes to stream and disk, the QuickSyncEncoder, and also the X264Encoder
3 // (for the stream) if there is one.
5 #ifndef _VIDEO_ENCODER_H
6 #define _VIDEO_ENCODER_H
14 #include "audio_encoder.h"
16 #include "ref_counted_frame.h"
17 #include "ref_counted_gl_sync.h"
21 class QuickSyncEncoder;
28 class VideoEncoder : public KeyFrameSignalReceiver {
30 VideoEncoder(movit::ResourcePool *resource_pool, QSurface *surface, const std::string &va_display, int width, int height, HTTPD *httpd);
33 void add_audio(int64_t pts, std::vector<float> audio);
34 bool begin_frame(GLuint *y_tex, GLuint *cbcr_tex);
35 RefCountedGLsync end_frame(int64_t pts, int64_t duration, const std::vector<RefCountedFrame> &input_frames);
37 // Does a cut of the disk stream immediately ("frame" is used for the filename only).
38 void do_cut(int frame);
40 virtual void signal_keyframe() override {
41 stream_mux_writing_keyframes = true;
45 void open_output_stream();
46 void close_output_stream();
47 static int write_packet_thunk(void *opaque, uint8_t *buf, int buf_size);
48 int write_packet(uint8_t *buf, int buf_size);
50 AVOutputFormat *oformat;
52 std::unique_ptr<QuickSyncEncoder> quicksync_encoder; // Under <qs_mu>.
53 movit::ResourcePool *resource_pool;
55 std::string va_display;
59 std::unique_ptr<Mux> stream_mux; // To HTTP.
60 std::unique_ptr<AudioEncoder> stream_audio_encoder;
61 std::unique_ptr<X264Encoder> x264_encoder; // nullptr if not using x264.
63 // While Mux object is constructing, <stream_mux_writing_header> is true,
64 // and the header is being collected into stream_mux_header.
65 bool stream_mux_writing_header;
66 std::string stream_mux_header;
68 bool stream_mux_writing_keyframes = false;
70 std::atomic<int> quicksync_encoders_in_shutdown{0};
72 // Encoders that are shutdown, but need to call release_gl_resources()
73 // (or be deleted) from some thread with an OpenGL context.
74 std::vector<std::unique_ptr<QuickSyncEncoder>> qs_needing_cleanup; // Under <qs_mu>.