blob: d1ba3d55ab105e1a51f33bfb88a0071efdd56812 [file] [log] [blame]
#pragma once
#include <assert.h>
#include <video.h>
#include <ast_video_types.hpp>
#include <iostream>
#include <vector>
namespace AstVideo {
class VideoPuller {
public:
VideoPuller() : image_info(){};
void initialize() {
std::cout << "Opening /dev/video\n";
video_fd = open("/dev/video", O_RDWR);
if (!video_fd) {
std::cout << "Failed to open /dev/video\n";
// TODO(Ed) throw exception?
} else {
std::cout << "Opened successfully\n";
}
}
RawVideoBuffer read_video() {
assert(video_fd != 0);
RawVideoBuffer raw;
IMAGE_INFO image_info{};
image_info.do_image_refresh = 1; // full frame refresh
image_info.qc_valid = 0; // quick cursor disabled
image_info.parameter.features.w = 0;
image_info.parameter.features.h = 0;
image_info.parameter.features.chrom_tbl = 0; // level
image_info.parameter.features.lumin_tbl = 0;
image_info.parameter.features.jpg_fmt = 1;
image_info.parameter.features.buf =
reinterpret_cast<unsigned char *>(raw.buffer.data());
image_info.crypttype = -1;
std::cout << "Writing\n";
int status;
/*
status = write(video_fd, reinterpret_cast<char*>(&image_info),
sizeof(image_info));
if (status != sizeof(image_info)) {
std::cout << "Write failed. Return: " << status << "\n";
perror("perror output:");
}
std::cout << "Write done\n";
*/
std::cout << "Reading\n";
status = read(video_fd, reinterpret_cast<char *>(&image_info),
sizeof(image_info));
std::cout << "Reading\n";
if (status != 0) {
std::cout << "Read failed with status " << status << "\n";
}
raw.buffer.resize(image_info.len);
raw.height = image_info.parameter.features.h;
raw.width = image_info.parameter.features.w;
if (image_info.parameter.features.jpg_fmt == 422) {
raw.mode = YuvMode::YUV420;
} else {
raw.mode = YuvMode::YUV444;
}
return raw;
}
private:
int video_fd;
IMAGE_INFO image_info;
};
}