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];
43 int record_thread_func();
45 int main(int argc, char **argv)
48 avformat_network_init();
50 QApplication app(argc, argv);
51 MainWindow mainWindow;
54 thread(record_thread_func).detach();
59 int record_thread_func()
61 auto format_ctx = avformat_open_input_unique("multiangle.mp4", nullptr, nullptr);
62 if (format_ctx == nullptr) {
63 fprintf(stderr, "%s: Error opening file\n", "example.mp4");
67 int64_t last_pts = -1;
71 unique_ptr<AVPacket, decltype(av_packet_unref)*> pkt_cleanup(
72 &pkt, av_packet_unref);
76 if (av_read_frame(format_ctx.get(), &pkt) != 0) {
79 fprintf(stderr, "Got a frame from camera %d, pts = %ld, size = %d\n",
80 pkt.stream_index, pkt.pts, pkt.size);
81 string filename = filename_for_frame(pkt.stream_index, pkt.pts);
82 FILE *fp = fopen(filename.c_str(), "wb");
84 perror(filename.c_str());
87 fwrite(pkt.data, pkt.size, 1, fp);
90 post_to_main_thread([pkt] {
91 if (pkt.stream_index == 0) {
92 global_mainwindow->ui->input1_display->setFrame(pkt.stream_index, pkt.pts);
93 } else if (pkt.stream_index == 1) {
94 global_mainwindow->ui->input2_display->setFrame(pkt.stream_index, pkt.pts);
95 } else if (pkt.stream_index == 2) {
96 global_mainwindow->ui->input3_display->setFrame(pkt.stream_index, pkt.pts);
100 assert(pkt.stream_index < MAX_STREAMS);
101 frames[pkt.stream_index].push_back(pkt.pts);
103 // Hack. Assumes a given timebase.
104 if (last_pts != -1) {
105 this_thread::sleep_for(microseconds((pkt.pts - last_pts) * 1000000 / 12800));
108 current_pts = pkt.pts;