#include <assert.h>
#include <fcntl.h>
+#include <signal.h>
#include <unistd.h>
+#include <chrono>
#include <string>
using namespace bmusb;
using namespace movit;
using namespace std;
+using namespace std::chrono;
using namespace std::placeholders;
Mixer *global_mixer = nullptr;
+X264Encoder *global_x264_encoder = nullptr;
+MuxMetrics stream_mux_metrics;
int write_packet(void *opaque, uint8_t *buf, int buf_size, AVIODataMarkerType type, int64_t time)
{
unique_ptr<Mux> mux;
int time_base = global_flags.stream_coarse_timebase ? COARSE_TIMEBASE : TIMEBASE;
mux.reset(new Mux(avctx, global_flags.width, global_flags.height, Mux::CODEC_H264, video_extradata, audio_encoder->get_codec_parameters().get(), time_base,
- /*write_callback=*/nullptr, Mux::WRITE_FOREGROUND, {}));
+ /*write_callback=*/nullptr, Mux::WRITE_FOREGROUND, { &stream_mux_metrics }));
+ stream_mux_metrics.init({{ "destination", "http" }});
return mux;
}
FrameAllocator::Frame audio_frame, size_t audio_offset, AudioFormat audio_format)
{
if (video_pts >= 0 && video_frame.len > 0) {
+ ReceivedTimestamps ts;
+ ts.ts.push_back(steady_clock::now());
+
video_pts = av_rescale_q(video_pts, video_timebase, AVRational{ 1, TIMEBASE });
- int64_t frame_duration = TIMEBASE * video_format.frame_rate_nom / video_format.frame_rate_den;
- x264_encoder->add_frame(video_pts, frame_duration, video->get_current_frame_ycbcr_format().luma_coefficients, video_frame.data + video_offset, ReceivedTimestamps());
+ int64_t frame_duration = TIMEBASE * video_format.frame_rate_den / video_format.frame_rate_nom;
+ x264_encoder->add_frame(video_pts, frame_duration, video->get_current_frame_ycbcr_format().luma_coefficients, video_frame.data + video_offset, ts);
}
if (audio_frame.len > 0) {
// FFmpegCapture takes care of this for us.
mux->add_packet(*pkt, pkt->pts, pkt->dts == AV_NOPTS_VALUE ? pkt->pts : pkt->dts, timebase);
}
+void adjust_bitrate(int signal)
+{
+ int new_bitrate = global_flags.x264_bitrate;
+ if (signal == SIGUSR1) {
+ new_bitrate += 100;
+ if (new_bitrate > 100000) {
+ fprintf(stderr, "Ignoring SIGUSR1, can't increase bitrate below 100000 kbit/sec (currently at %d kbit/sec)\n",
+ global_flags.x264_bitrate);
+ } else {
+ fprintf(stderr, "Increasing bitrate to %d kbit/sec due to SIGUSR1.\n", new_bitrate);
+ global_flags.x264_bitrate = new_bitrate;
+ global_x264_encoder->change_bitrate(new_bitrate);
+ }
+ } else if (signal == SIGUSR2) {
+ new_bitrate -= 100;
+ if (new_bitrate < 100) {
+ fprintf(stderr, "Ignoring SIGUSR1, can't decrease bitrate below 100 kbit/sec (currently at %d kbit/sec)\n",
+ global_flags.x264_bitrate);
+ } else {
+ fprintf(stderr, "Decreasing bitrate to %d kbit/sec due to SIGUSR1.\n", new_bitrate);
+ global_flags.x264_bitrate = new_bitrate;
+ global_x264_encoder->change_bitrate(new_bitrate);
+ }
+ }
+}
+
int main(int argc, char *argv[])
{
parse_flags(PROGRAM_KAERU, argc, argv);
usage(PROGRAM_KAERU);
exit(1);
}
+ global_flags.num_cards = 1; // For latency metrics.
av_register_all();
avformat_network_init();
audio_encoder->add_mux(http_mux.get());
}
x264_encoder.add_mux(http_mux.get());
+ global_x264_encoder = &x264_encoder;
FFmpegCapture video(argv[optind], global_flags.width, global_flags.height);
video.set_pixel_format(FFmpegCapture::PixelFormat_NV12);
httpd.start(9095);
+ signal(SIGUSR1, adjust_bitrate);
+ signal(SIGUSR2, adjust_bitrate);
+
for ( ;; ) {
sleep(3600);
}