// This is experimental code, not yet supported.
#include "audio_encoder.h"
+#include "basic_stats.h"
#include "defs.h"
#include "flags.h"
#include "ffmpeg_capture.h"
#include "mixer.h"
#include "mux.h"
+#include "quittable_sleeper.h"
#include "timebase.h"
#include "x264_encoder.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;
+int frame_num = 0;
+BasicStats *global_basic_stats = nullptr;
+QuittableSleeper should_quit;
+MuxMetrics stream_mux_metrics;
int write_packet(void *opaque, uint8_t *buf, int buf_size, AVIODataMarkerType type, int64_t time)
{
stream_mux_header.append((char *)buf, buf_size);
httpd->set_header(stream_mux_header);
} else {
- httpd->add_data((char *)buf, buf_size, type == AVIO_DATA_MARKER_SYNC_POINT);
+ httpd->add_data((char *)buf, buf_size, type == AVIO_DATA_MARKER_SYNC_POINT, time, AVRational{ AV_TIME_BASE, 1 });
}
return buf_size;
}
avctx->pb = avio_alloc_context(buf, MUX_BUFFER_SIZE, 1, httpd, nullptr, nullptr, nullptr);
avctx->pb->write_data_type = &write_packet;
avctx->pb->ignore_boundary_point = 1;
+ avctx->flags = AVFMT_FLAG_CUSTOM_IO;
string video_extradata = x264_encoder->get_global_headers();
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, {}));
+ mux.reset(new Mux(avctx, global_flags.width, global_flags.height, Mux::CODEC_H264, video_extradata, audio_encoder->get_codec_parameters().get(), COARSE_TIMEBASE,
+ /*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);
+ global_basic_stats->update(frame_num++, /*dropped_frames=*/0);
}
if (audio_frame.len > 0) {
// FFmpegCapture takes care of this for us.
} 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",
+ fprintf(stderr, "Ignoring SIGUSR2, 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);
+ fprintf(stderr, "Decreasing bitrate to %d kbit/sec due to SIGUSR2.\n", new_bitrate);
global_flags.x264_bitrate = new_bitrate;
global_x264_encoder->change_bitrate(new_bitrate);
}
}
}
+void request_quit(int signal)
+{
+ should_quit.quit();
+}
+
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();
assert(oformat != nullptr);
unique_ptr<AudioEncoder> audio_encoder;
- if (global_flags.transcode_audio) {
- if (global_flags.stream_audio_codec_name.empty()) {
- audio_encoder.reset(new AudioEncoder(AUDIO_OUTPUT_CODEC_NAME, DEFAULT_AUDIO_OUTPUT_BIT_RATE, oformat));
- } else {
- audio_encoder.reset(new AudioEncoder(global_flags.stream_audio_codec_name, global_flags.stream_audio_codec_bitrate, oformat));
- }
+ if (global_flags.stream_audio_codec_name.empty()) {
+ audio_encoder.reset(new AudioEncoder(AUDIO_OUTPUT_CODEC_NAME, DEFAULT_AUDIO_OUTPUT_BIT_RATE, oformat));
+ } else {
+ audio_encoder.reset(new AudioEncoder(global_flags.stream_audio_codec_name, global_flags.stream_audio_codec_bitrate, oformat));
}
- X264Encoder x264_encoder(oformat);
- unique_ptr<Mux> http_mux = create_mux(&httpd, oformat, &x264_encoder, audio_encoder.get());
+ unique_ptr<X264Encoder> x264_encoder(new X264Encoder(oformat));
+ unique_ptr<Mux> http_mux = create_mux(&httpd, oformat, x264_encoder.get(), audio_encoder.get());
if (global_flags.transcode_audio) {
audio_encoder->add_mux(http_mux.get());
}
- x264_encoder.add_mux(http_mux.get());
- global_x264_encoder = &x264_encoder;
+ x264_encoder->add_mux(http_mux.get());
+ global_x264_encoder = x264_encoder.get();
FFmpegCapture video(argv[optind], global_flags.width, global_flags.height);
video.set_pixel_format(FFmpegCapture::PixelFormat_NV12);
- video.set_frame_callback(bind(video_frame_callback, &video, &x264_encoder, audio_encoder.get(), _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11));
+ video.set_frame_callback(bind(video_frame_callback, &video, x264_encoder.get(), audio_encoder.get(), _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11));
if (!global_flags.transcode_audio) {
video.set_audio_callback(bind(audio_frame_callback, http_mux.get(), _1, _2));
}
video.start_bm_capture();
video.change_rate(2.0); // Be sure never to really fall behind, but also don't dump huge amounts of stuff onto x264.
- httpd.start(9095);
+ BasicStats basic_stats(/*verbose=*/false, /*use_opengl=*/false);
+ global_basic_stats = &basic_stats;
+ httpd.start(global_flags.http_port);
signal(SIGUSR1, adjust_bitrate);
signal(SIGUSR2, adjust_bitrate);
+ signal(SIGINT, request_quit);
- for ( ;; ) {
- sleep(3600);
+ while (!should_quit.should_quit()) {
+ should_quit.sleep_for(hours(1000));
}
+
+ video.stop_dequeue_thread();
+ // Stop the x264 encoder before killing the mux it's writing to.
+ x264_encoder.reset();
+ return 0;
}