6 #include <condition_variable>
14 #include <libavformat/avformat.h>
17 #include <QApplication>
19 #include "clip_list.h"
21 #include "mainwindow.h"
22 #include "ffmpeg_raii.h"
24 #include "post_to_main_thread.h"
25 #include "ui_mainwindow.h"
28 using namespace std::chrono;
30 // TODO: Replace by some sort of GUI control, I guess.
31 int64_t current_pts = 0;
33 string filename_for_frame(unsigned stream_idx, int64_t pts)
36 snprintf(filename, sizeof(filename), "frames/cam%d-pts%09ld.jpeg", stream_idx, pts);
41 vector<int64_t> frames[MAX_STREAMS];
42 QGLWidget *global_share_widget;
44 int record_thread_func();
46 int main(int argc, char **argv)
49 avformat_network_init();
51 QCoreApplication::setAttribute(Qt::AA_ShareOpenGLContexts, true);
54 fmt.setDepthBufferSize(0);
55 fmt.setStencilBufferSize(0);
56 fmt.setProfile(QSurfaceFormat::CoreProfile);
57 fmt.setMajorVersion(3);
58 fmt.setMinorVersion(1);
60 // Turn off vsync, since Qt generally gives us at most frame rate
61 // (display frequency) / (number of QGLWidgets active).
62 fmt.setSwapInterval(0);
64 QSurfaceFormat::setDefaultFormat(fmt);
66 QGLFormat::setDefaultFormat(QGLFormat::fromSurfaceFormat(fmt));
68 QApplication app(argc, argv);
69 global_share_widget = new QGLWidget();
70 if (!global_share_widget->isValid()) {
71 fprintf(stderr, "Failed to initialize OpenGL. Futatabi needs at least OpenGL 3.1 to function properly.\n");
74 MainWindow mainWindow;
77 thread(record_thread_func).detach();
82 int record_thread_func()
84 auto format_ctx = avformat_open_input_unique("multiangle.mp4", nullptr, nullptr);
85 if (format_ctx == nullptr) {
86 fprintf(stderr, "%s: Error opening file\n", "example.mp4");
90 int64_t last_pts = -1;
94 unique_ptr<AVPacket, decltype(av_packet_unref)*> pkt_cleanup(
95 &pkt, av_packet_unref);
99 if (av_read_frame(format_ctx.get(), &pkt) != 0) {
102 //fprintf(stderr, "Got a frame from camera %d, pts = %ld, size = %d\n",
103 // pkt.stream_index, pkt.pts, pkt.size);
104 string filename = filename_for_frame(pkt.stream_index, pkt.pts);
105 FILE *fp = fopen(filename.c_str(), "wb");
107 perror(filename.c_str());
110 fwrite(pkt.data, pkt.size, 1, fp);
113 post_to_main_thread([pkt] {
114 if (pkt.stream_index == 0) {
115 global_mainwindow->ui->input1_display->setFrame(pkt.stream_index, pkt.pts);
116 } else if (pkt.stream_index == 1) {
117 global_mainwindow->ui->input2_display->setFrame(pkt.stream_index, pkt.pts);
118 } else if (pkt.stream_index == 2) {
119 global_mainwindow->ui->input3_display->setFrame(pkt.stream_index, pkt.pts);
120 } else if (pkt.stream_index == 3) {
121 global_mainwindow->ui->input4_display->setFrame(pkt.stream_index, pkt.pts);
125 assert(pkt.stream_index < MAX_STREAMS);
126 frames[pkt.stream_index].push_back(pkt.pts);
128 // Hack. Assumes a given timebase.
129 if (last_pts != -1) {
130 this_thread::sleep_for(microseconds((pkt.pts - last_pts) * 1000000 / 12800));
133 current_pts = pkt.pts;