thumbnailgen.cpp File Reference

#include <iostream>
#include <filesystem>
#include <string_view>
#include <memory>
#include <chrono>
#include <cassert>
#include <stdio.h>
#include <jpeglib.h>
#include "ipc_frame_unix.h"

Include dependency graph for thumbnailgen.cpp:

Go to the source code of this file.

Classes
struct	file_deleter
class	Img_writer

Typedefs
using	File_uniq = std::unique_ptr<FILE, file_deleter>

Functions
int	main (int argc, char **argv)

Typedef Documentation

File_uniq

using File_uniq = std::unique_ptr<FILE, file_deleter>

Definition at line 12 of file thumbnailgen.cpp.

Function Documentation

main()

int main	(	int	argc,
		char **	argv )

Definition at line 59 of file thumbnailgen.cpp.

                               {
        if(argc != 4){
                fprintf(stderr, "Usage: %s <socket path> <output path> <fps>\n", argv[0]);
                return 1;
        }
 
        Ipc_frame_reader_uniq reader(ipc_frame_reader_new(argv[1]));
        Ipc_frame_uniq ipc_frame(ipc_frame_new());
 
        Img_writer img_writer;
 
        using clock = std::chrono::steady_clock;
        auto frame_time = std::chrono::duration_cast<clock::duration>(std::chrono::duration<double>(1 / std::stod(argv[3])));
        auto next_frame = clock::now();
 
        while(true){
                printf("Waiting for connection...\n");
                ipc_frame_reader_wait_connect(reader.get());
                printf("Connected...\n");
                while(ipc_frame_reader_read(reader.get(), ipc_frame.get())){
                        auto now = clock::now();
                        if(now < next_frame)
                                continue;
 
                        std::string path = argv[2];
                        std::string tmp_path = path + ".swp";
 
                        img_writer.write_img(ipc_frame.get(), tmp_path);
                        std::filesystem::rename(tmp_path, path);
 
                        next_frame = std::max(next_frame + frame_time, now);
                }
                fprintf(stderr, "Failed to read frame\n");
        }
 
        return 0;
}

References ipc_frame_new(), ipc_frame_reader_new(), ipc_frame_reader_read(), ipc_frame_reader_wait_connect(), and Img_writer::write_img().

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