1 #include "video_encoder.h"
11 #include "quicksync_encoder.h"
17 string generate_local_dump_filename(int frame)
19 time_t now = time(NULL);
21 localtime_r(&now, &now_tm);
24 strftime(timestamp, sizeof(timestamp), "%F-%T%z", &now_tm);
26 // Use the frame number to disambiguate between two cuts starting
27 // on the same second.
29 snprintf(filename, sizeof(filename), "%s%s-f%02d%s",
30 LOCAL_DUMP_PREFIX, timestamp, frame % 100, LOCAL_DUMP_SUFFIX);
36 VideoEncoder::VideoEncoder(QSurface *surface, const std::string &va_display, int width, int height, HTTPD *httpd)
37 : surface(surface), va_display(va_display), width(width), height(height), httpd(httpd)
41 if (global_flags.stream_audio_codec_name.empty()) {
42 stream_audio_encoder.reset(new AudioEncoder(AUDIO_OUTPUT_CODEC_NAME, DEFAULT_AUDIO_OUTPUT_BIT_RATE));
44 stream_audio_encoder.reset(new AudioEncoder(global_flags.stream_audio_codec_name, global_flags.stream_audio_codec_bitrate));
46 stream_audio_encoder->add_mux(stream_mux.get());
48 string filename = generate_local_dump_filename(/*frame=*/0);
49 quicksync_encoder.reset(new QuickSyncEncoder(filename, surface, va_display, width, height, stream_mux.get(), stream_audio_encoder.get()));
52 VideoEncoder::~VideoEncoder()
54 quicksync_encoder.reset(nullptr);
55 close_output_stream();
58 void VideoEncoder::do_cut(int frame)
60 string filename = generate_local_dump_filename(frame);
61 printf("Starting new recording: %s\n", filename.c_str());
62 quicksync_encoder->shutdown();
63 quicksync_encoder.reset(new QuickSyncEncoder(filename, surface, va_display, width, height, stream_mux.get(), stream_audio_encoder.get()));
66 void VideoEncoder::add_audio(int64_t pts, std::vector<float> audio)
68 quicksync_encoder->add_audio(pts, audio);
71 bool VideoEncoder::begin_frame(GLuint *y_tex, GLuint *cbcr_tex)
73 return quicksync_encoder->begin_frame(y_tex, cbcr_tex);
76 RefCountedGLsync VideoEncoder::end_frame(int64_t pts, int64_t duration, const std::vector<RefCountedFrame> &input_frames)
78 return quicksync_encoder->end_frame(pts, duration, input_frames);
81 void VideoEncoder::open_output_stream()
83 AVFormatContext *avctx = avformat_alloc_context();
84 AVOutputFormat *oformat = av_guess_format(global_flags.stream_mux_name.c_str(), nullptr, nullptr);
85 assert(oformat != nullptr);
86 avctx->oformat = oformat;
91 if (global_flags.stream_audio_codec_name.empty()) {
92 codec_name = AUDIO_OUTPUT_CODEC_NAME;
93 bit_rate = DEFAULT_AUDIO_OUTPUT_BIT_RATE;
95 codec_name = global_flags.stream_audio_codec_name;
96 bit_rate = global_flags.stream_audio_codec_bitrate;
99 uint8_t *buf = (uint8_t *)av_malloc(MUX_BUFFER_SIZE);
100 avctx->pb = avio_alloc_context(buf, MUX_BUFFER_SIZE, 1, this, nullptr, &VideoEncoder::write_packet_thunk, nullptr);
102 Mux::Codec video_codec;
103 if (global_flags.uncompressed_video_to_http) {
104 video_codec = Mux::CODEC_NV12;
106 video_codec = Mux::CODEC_H264;
109 avctx->flags = AVFMT_FLAG_CUSTOM_IO;
110 AVCodec *codec_audio = avcodec_find_encoder_by_name(codec_name.c_str());
111 if (codec_audio == nullptr) {
112 fprintf(stderr, "ERROR: Could not find codec '%s'\n", codec_name.c_str());
116 int time_base = global_flags.stream_coarse_timebase ? COARSE_TIMEBASE : TIMEBASE;
117 stream_mux_writing_header = true;
118 stream_mux.reset(new Mux(avctx, width, height, video_codec, codec_audio, time_base, bit_rate, this));
119 stream_mux_writing_header = false;
120 httpd->set_header(stream_mux_header);
121 stream_mux_header.clear();
124 void VideoEncoder::close_output_stream()
129 int VideoEncoder::write_packet_thunk(void *opaque, uint8_t *buf, int buf_size)
131 VideoEncoder *video_encoder = (VideoEncoder *)opaque;
132 return video_encoder->write_packet(buf, buf_size);
135 int VideoEncoder::write_packet(uint8_t *buf, int buf_size)
137 if (stream_mux_writing_header) {
138 stream_mux_header.append((char *)buf, buf_size);
140 httpd->add_data((char *)buf, buf_size, stream_mux_writing_keyframes);
141 stream_mux_writing_keyframes = false;