964 lines
24 KiB
C
964 lines
24 KiB
C
#include <errno.h>
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#include <fcntl.h>
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#include <linux/videodev2.h>
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#include <linux/media.h>
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#include <linux/v4l2-subdev.h>
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#include <sys/ioctl.h>
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#include <sys/mman.h>
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#include <sys/stat.h>
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#include <time.h>
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#include <assert.h>
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#include <limits.h>
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#include <linux/kdev_t.h>
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#include <sys/sysmacros.h>
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#include <asm/errno.h>
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#include <gtk/gtk.h>
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#include "ini.h"
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#include "bayer.h"
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#include "quickdebayer.h"
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enum io_method {
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IO_METHOD_READ,
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IO_METHOD_MMAP,
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IO_METHOD_USERPTR,
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};
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struct buffer {
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void *start;
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size_t length;
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};
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struct buffer *buffers;
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static unsigned int n_buffers;
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// Rear camera
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static char *rear_dev_name;
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static unsigned int rear_entity_id;
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static char rear_dev[260];
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static int rear_width = -1;
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static int rear_height = -1;
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static int rear_rate = 30;
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static int rear_rotate = 0;
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static int rear_fmt = V4L2_PIX_FMT_RGB24;
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static int rear_mbus = MEDIA_BUS_FMT_RGB888_1X24;
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// Front camera
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static char *front_dev_name;
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static unsigned int front_entity_id;
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static char front_dev[260];
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static int front_width = -1;
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static int front_height = -1;
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static int front_rate = 30;
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static int front_rotate = 0;
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static int front_fmt = V4L2_PIX_FMT_RGB24;
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static int front_mbus = MEDIA_BUS_FMT_RGB888_1X24;
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// Camera interface
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static char *media_drv_name;
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static unsigned int interface_entity_id;
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static char dev_name[260];
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static int media_fd;
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static int video_fd;
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// State
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static int ready = 0;
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static int current_width = -1;
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static int current_height = -1;
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static int current_fmt = 0;
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static int current_rotate = 0;
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static int current_fd;
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static int capture = 0;
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static int current_is_rear = 1;
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static cairo_surface_t *surface = NULL;
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static int preview_width = -1;
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static int preview_height = -1;
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// Widgets
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GtkWidget *preview;
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GtkWidget *error_box;
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GtkWidget *error_message;
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static int
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xioctl(int fd, int request, void *arg)
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{
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int r;
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do {
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r = ioctl(fd, request, arg);
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} while (r == -1 && errno == EINTR);
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return r;
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}
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static void
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errno_exit(const char *s)
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{
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fprintf(stderr, "%s error %d, %s\n", s, errno, strerror(errno));
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exit(EXIT_FAILURE);
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}
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static void
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show_error(const char *s)
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{
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gtk_label_set_text(GTK_LABEL(error_message), s);
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gtk_widget_show(error_box);
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}
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static void
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start_capturing(int fd)
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{
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enum v4l2_buf_type type;
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for (int i = 0; i < n_buffers; ++i) {
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struct v4l2_buffer buf = {
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.type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
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.memory = V4L2_MEMORY_MMAP,
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.index = i,
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};
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if (xioctl(fd, VIDIOC_QBUF, &buf) == -1) {
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errno_exit("VIDIOC_QBUF");
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}
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}
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type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
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if (xioctl(fd, VIDIOC_STREAMON, &type) == -1) {
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errno_exit("VIDIOC_STREAMON");
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}
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ready = 1;
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}
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static void
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stop_capturing(int fd)
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{
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int i;
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ready = 0;
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printf("Stopping capture\n");
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enum v4l2_buf_type type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
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if (xioctl(fd, VIDIOC_STREAMOFF, &type) == -1) {
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errno_exit("VIDIOC_STREAMOFF");
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}
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for (i = 0; i < n_buffers; ++i) {
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munmap(buffers[i].start, buffers[i].length);
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}
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}
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static void
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init_mmap(int fd)
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{
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struct v4l2_requestbuffers req = {0};
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req.count = 4;
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req.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
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req.memory = V4L2_MEMORY_MMAP;
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if (xioctl(fd, VIDIOC_REQBUFS, &req) == -1) {
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if (errno == EINVAL) {
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fprintf(stderr, "%s does not support memory mapping",
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dev_name);
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exit(EXIT_FAILURE);
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} else {
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errno_exit("VIDIOC_REQBUFS");
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}
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}
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if (req.count < 2) {
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fprintf(stderr, "Insufficient buffer memory on %s\n",
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dev_name);
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exit(EXIT_FAILURE);
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}
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buffers = calloc(req.count, sizeof(buffers[0]));
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if (!buffers) {
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fprintf(stderr, "Out of memory\\n");
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exit(EXIT_FAILURE);
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}
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for (n_buffers = 0; n_buffers < req.count; ++n_buffers) {
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struct v4l2_buffer buf = {
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.type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
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.memory = V4L2_MEMORY_MMAP,
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.index = n_buffers,
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};
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if (xioctl(fd, VIDIOC_QUERYBUF, &buf) == -1) {
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errno_exit("VIDIOC_QUERYBUF");
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}
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buffers[n_buffers].length = buf.length;
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buffers[n_buffers].start = mmap(NULL /* start anywhere */,
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buf.length,
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PROT_READ | PROT_WRITE /* required */,
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MAP_SHARED /* recommended */,
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fd, buf.m.offset);
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if (MAP_FAILED == buffers[n_buffers].start) {
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errno_exit("mmap");
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}
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}
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}
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static int
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v4l2_ctrl_set(int fd, uint32_t id, int val)
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{
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struct v4l2_control ctrl = {0};
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ctrl.id = id;
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ctrl.value = val;
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if (xioctl(fd, VIDIOC_S_CTRL, &ctrl) == -1) {
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g_printerr("Failed to set control %d to %d\n", id, val);
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return -1;
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}
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return 0;
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}
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static void
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init_sensor(char *fn, int width, int height, int mbus, int rate)
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{
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int fd;
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struct v4l2_subdev_frame_interval interval;
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struct v4l2_subdev_format fmt;
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fd = open(fn, O_RDWR);
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g_printerr("Setting sensor rate to %d\n", rate);
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interval.pad = 0;
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interval.interval.numerator = 1;
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interval.interval.denominator = rate;
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if (xioctl(fd, VIDIOC_SUBDEV_S_FRAME_INTERVAL, &interval) == -1) {
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errno_exit("VIDIOC_SUBDEV_S_FRAME_INTERVAL");
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}
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g_printerr("Driver returned %d/%d frameinterval\n",
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interval.interval.numerator, interval.interval.denominator);
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g_printerr("Setting sensor to %dx%d fmt %d\n",
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width, height, mbus);
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fmt.pad = 0;
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fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
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fmt.format.code = mbus;
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fmt.format.width = width;
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fmt.format.height = height;
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fmt.format.field = V4L2_FIELD_ANY;
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if (xioctl(fd, VIDIOC_SUBDEV_S_FMT, &fmt) == -1) {
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errno_exit("VIDIOC_SUBDEV_S_FMT");
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}
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g_printerr("Driver returned %dx%d fmt %d\n",
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fmt.format.width, fmt.format.height,
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fmt.format.code);
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// Placeholder, default is also 1
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//v4l2_ctrl_set(fd, V4L2_CID_AUTOGAIN, 1);
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close(current_fd);
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current_fd = fd;
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}
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static int
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init_device(int fd)
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{
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struct v4l2_capability cap;
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if (xioctl(fd, VIDIOC_QUERYCAP, &cap) == -1) {
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if (errno == EINVAL) {
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fprintf(stderr, "%s is no V4L2 device\n",
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dev_name);
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exit(EXIT_FAILURE);
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} else {
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errno_exit("VIDIOC_QUERYCAP");
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}
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}
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if (!(cap.capabilities & V4L2_CAP_VIDEO_CAPTURE)) {
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fprintf(stderr, "%s is no video capture device\n",
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dev_name);
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exit(EXIT_FAILURE);
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}
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if (!(cap.capabilities & V4L2_CAP_STREAMING)) {
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fprintf(stderr, "%s does not support streaming i/o\n",
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dev_name);
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exit(EXIT_FAILURE);
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}
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/* Select video input, video standard and tune here. */
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struct v4l2_cropcap cropcap = {
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.type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
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};
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struct v4l2_crop crop = {0};
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if (xioctl(fd, VIDIOC_CROPCAP, &cropcap) == 0) {
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crop.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
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crop.c = cropcap.defrect; /* reset to default */
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if (xioctl(fd, VIDIOC_S_CROP, &crop) == -1) {
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switch (errno) {
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case EINVAL:
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/* Cropping not supported. */
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break;
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default:
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/* Errors ignored. */
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break;
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}
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}
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} else {
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/* Errors ignored. */
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}
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struct v4l2_format fmt = {
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.type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
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};
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if (current_width > 0) {
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g_printerr("Setting camera to %dx%d fmt %d\n",
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current_width, current_height, current_fmt);
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fmt.fmt.pix.width = current_width;
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fmt.fmt.pix.height = current_height;
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fmt.fmt.pix.pixelformat = current_fmt;
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fmt.fmt.pix.field = V4L2_FIELD_ANY;
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if (xioctl(fd, VIDIOC_S_FMT, &fmt) == -1) {
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g_printerr("VIDIOC_S_FMT failed");
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show_error("Could not set camera mode");
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return -1;
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}
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g_printerr("Driver returned %dx%d fmt %d\n",
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fmt.fmt.pix.width, fmt.fmt.pix.height,
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fmt.fmt.pix.pixelformat);
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/* Note VIDIOC_S_FMT may change width and height. */
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} else {
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g_printerr("Querying camera format\n");
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/* Preserve original settings as set by v4l2-ctl for example */
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if (xioctl(fd, VIDIOC_G_FMT, &fmt) == -1) {
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errno_exit("VIDIOC_G_FMT");
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}
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g_printerr("Driver returned %dx%d fmt %d\n",
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fmt.fmt.pix.width, fmt.fmt.pix.height,
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fmt.fmt.pix.pixelformat);
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current_width = fmt.fmt.pix.width;
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current_height = fmt.fmt.pix.height;
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}
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current_fmt = fmt.fmt.pix.pixelformat;
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/* Buggy driver paranoia. */
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unsigned int min = fmt.fmt.pix.width * 2;
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if (fmt.fmt.pix.bytesperline < min) {
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fmt.fmt.pix.bytesperline = min;
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}
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min = fmt.fmt.pix.bytesperline * fmt.fmt.pix.height;
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if (fmt.fmt.pix.sizeimage < min) {
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fmt.fmt.pix.sizeimage = min;
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}
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init_mmap(fd);
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return 0;
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}
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static void
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process_image(const int *p, int size)
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{
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clock_t t;
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time_t rawtime;
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struct tm tim;
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uint8_t *pixels;
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double time_taken;
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char fname[255];
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char timestamp[30];
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GdkPixbuf *pixbuf;
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GdkPixbuf *pixbufrot;
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GError *error = NULL;
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double scale;
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cairo_t *cr;
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t = clock();
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int skip = 2;
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dc1394bayer_method_t method = DC1394_BAYER_METHOD_DOWNSAMPLE;
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dc1394color_filter_t filter = DC1394_COLOR_FILTER_BGGR;
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if (capture) {
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method = DC1394_BAYER_METHOD_SIMPLE;
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// method = DC1394_BAYER_METHOD_VNG is slightly sharper but takes 10 seconds;
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pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, FALSE, 8, current_width, current_height);
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pixels = gdk_pixbuf_get_pixels(pixbuf);
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dc1394_bayer_decoding_8bit((const uint8_t *) p, pixels, current_width, current_height, filter, method);
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} else {
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if(current_width > 1280) {
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skip = 3;
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}
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pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, FALSE, 8, current_width / (skip*2), current_height / (skip*2));
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pixels = gdk_pixbuf_get_pixels(pixbuf);
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quick_debayer_bggr8((const uint8_t *)p, pixels, current_width, current_height, skip);
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}
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if (current_rotate == 0) {
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pixbufrot = pixbuf;
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} else if (current_rotate == 90) {
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pixbufrot = gdk_pixbuf_rotate_simple(pixbuf, GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE);
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} else if (current_rotate == 180) {
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pixbufrot = gdk_pixbuf_rotate_simple(pixbuf, GDK_PIXBUF_ROTATE_UPSIDEDOWN);
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} else if (current_rotate == 270) {
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pixbufrot = gdk_pixbuf_rotate_simple(pixbuf, GDK_PIXBUF_ROTATE_CLOCKWISE);
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}
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if (capture) {
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time(&rawtime);
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tim = *(localtime(&rawtime));
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strftime(timestamp, 30, "%Y%m%d%H%M%S", &tim);
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sprintf(fname, "%s/Pictures/IMG%s.jpg", getenv("HOME"), timestamp);
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printf("Saving image\n");
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gdk_pixbuf_save(pixbufrot, fname, "jpeg", &error, "quality", "95", NULL);
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if (error != NULL) {
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g_printerr(error->message);
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g_clear_error(&error);
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}
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} else {
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scale = (double) preview_width / gdk_pixbuf_get_width(pixbufrot);
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cr = cairo_create(surface);
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cairo_set_source_rgb(cr, 0, 0, 0);
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cairo_paint(cr);
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cairo_scale(cr, scale, scale);
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gdk_cairo_set_source_pixbuf(cr, pixbufrot, 0, 0);
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cairo_pattern_set_extend(cairo_get_source(cr), CAIRO_EXTEND_NONE);
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cairo_paint(cr);
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gtk_widget_queue_draw_area(preview, 0, 0, preview_width, preview_height);
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}
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capture = 0;
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t = clock() - t;
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time_taken = ((double) t) / CLOCKS_PER_SEC;
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//printf("%f fps\n", 1.0 / time_taken);
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}
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static gboolean
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preview_draw(GtkWidget *widget, cairo_t *cr, gpointer data)
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{
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cairo_set_source_surface(cr, surface, 0, 0);
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cairo_paint(cr);
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return FALSE;
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}
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static gboolean
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preview_configure(GtkWidget *widget, GdkEventConfigure *event)
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{
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cairo_t *cr;
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if (surface)
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cairo_surface_destroy(surface);
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surface = gdk_window_create_similar_surface(gtk_widget_get_window(widget),
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CAIRO_CONTENT_COLOR,
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gtk_widget_get_allocated_width(widget),
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gtk_widget_get_allocated_height(widget));
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preview_width = gtk_widget_get_allocated_width(widget);
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preview_height = gtk_widget_get_allocated_height(widget);
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cr = cairo_create(surface);
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cairo_set_source_rgb(cr, 0, 0, 0);
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cairo_paint(cr);
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cairo_destroy(cr);
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return TRUE;
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}
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static int
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read_frame(int fd)
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{
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struct v4l2_buffer buf = {0};
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buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
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buf.memory = V4L2_MEMORY_MMAP;
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if (xioctl(fd, VIDIOC_DQBUF, &buf) == -1) {
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switch (errno) {
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case EAGAIN:
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return 0;
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case EIO:
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/* Could ignore EIO, see spec. */
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/* fallthrough */
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default:
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errno_exit("VIDIOC_DQBUF");
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break;
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}
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}
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//assert(buf.index < n_buffers);
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process_image(buffers[buf.index].start, buf.bytesused);
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if (xioctl(fd, VIDIOC_QBUF, &buf) == -1) {
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errno_exit("VIDIOC_QBUF");
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}
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return 1;
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}
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gboolean
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get_frame()
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{
|
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if (ready == 0)
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return TRUE;
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while (1) {
|
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fd_set fds;
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struct timeval tv;
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int r;
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|
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FD_ZERO(&fds);
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FD_SET(video_fd, &fds);
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|
|
/* Timeout. */
|
|
tv.tv_sec = 2;
|
|
tv.tv_usec = 0;
|
|
|
|
r = select(video_fd + 1, &fds, NULL, NULL, &tv);
|
|
|
|
if (r == -1) {
|
|
if (EINTR == errno) {
|
|
continue;
|
|
}
|
|
errno_exit("select");
|
|
} else if (r == 0) {
|
|
fprintf(stderr, "select timeout\\n");
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
if (read_frame(video_fd)) {
|
|
break;
|
|
}
|
|
/* EAGAIN - continue select loop. */
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
int
|
|
strtoint(const char *nptr, char **endptr, int base)
|
|
{
|
|
long x = strtol(nptr, endptr, base);
|
|
assert(x <= INT_MAX);
|
|
return (int) x;
|
|
}
|
|
|
|
static int
|
|
config_ini_handler(void *user, const char *section, const char *name,
|
|
const char *value)
|
|
{
|
|
if (strcmp(section, "rear") == 0) {
|
|
if (strcmp(name, "width") == 0) {
|
|
rear_width = strtoint(value, NULL, 10);
|
|
} else if (strcmp(name, "height") == 0) {
|
|
rear_height = strtoint(value, NULL, 10);
|
|
} else if (strcmp(name, "rate") == 0) {
|
|
rear_rate = strtoint(value, NULL, 10);
|
|
} else if (strcmp(name, "rotate") == 0) {
|
|
rear_rotate = strtoint(value, NULL, 10);
|
|
} else if (strcmp(name, "fmt") == 0) {
|
|
if (strcmp(value, "RGB") == 0) {
|
|
rear_fmt = V4L2_PIX_FMT_RGB24;
|
|
} else if (strcmp(value, "UYVY") == 0) {
|
|
rear_fmt = V4L2_PIX_FMT_UYVY;
|
|
} else if (strcmp(value, "YUYV") == 0) {
|
|
rear_fmt = V4L2_PIX_FMT_YUYV;
|
|
} else if (strcmp(value, "JPEG") == 0) {
|
|
rear_fmt = V4L2_PIX_FMT_JPEG;
|
|
} else if (strcmp(value, "NV12") == 0) {
|
|
rear_fmt = V4L2_PIX_FMT_NV12;
|
|
} else if (strcmp(value, "YUV420") == 0
|
|
|| strcmp(value, "I420") == 0
|
|
|| strcmp(value, "YU12") == 0) {
|
|
rear_fmt = V4L2_PIX_FMT_YUV420;
|
|
} else if (strcmp(value, "YVU420") == 0
|
|
|| strcmp(value, "YV12") == 0) {
|
|
rear_fmt = V4L2_PIX_FMT_YVU420;
|
|
} else if (strcmp(value, "RGGB8") == 0) {
|
|
rear_fmt = V4L2_PIX_FMT_SRGGB8;
|
|
} else if (strcmp(value, "BGGR8") == 0) {
|
|
rear_fmt = V4L2_PIX_FMT_SBGGR8;
|
|
rear_mbus = MEDIA_BUS_FMT_SBGGR8_1X8;
|
|
} else if (strcmp(value, "GRBG8") == 0) {
|
|
rear_fmt = V4L2_PIX_FMT_SGRBG8;
|
|
} else if (strcmp(value, "GBRG8") == 0) {
|
|
rear_fmt = V4L2_PIX_FMT_SGBRG8;
|
|
} else {
|
|
g_printerr("Unsupported pixelformat %s\n", value);
|
|
exit(1);
|
|
}
|
|
} else if (strcmp(name, "driver") == 0) {
|
|
rear_dev_name = strdup(value);
|
|
} else {
|
|
g_printerr("Unknown key '%s' in [rear]\n", name);
|
|
exit(1);
|
|
}
|
|
} else if (strcmp(section, "front") == 0) {
|
|
if (strcmp(name, "width") == 0) {
|
|
front_width = strtoint(value, NULL, 10);
|
|
} else if (strcmp(name, "height") == 0) {
|
|
front_height = strtoint(value, NULL, 10);
|
|
} else if (strcmp(name, "rate") == 0) {
|
|
front_rate = strtoint(value, NULL, 10);
|
|
} else if (strcmp(name, "rotate") == 0) {
|
|
front_rotate = strtoint(value, NULL, 10);
|
|
} else if (strcmp(name, "fmt") == 0) {
|
|
if (strcmp(value, "RGB") == 0) {
|
|
front_fmt = V4L2_PIX_FMT_RGB24;
|
|
} else if (strcmp(value, "UYVY") == 0) {
|
|
front_fmt = V4L2_PIX_FMT_UYVY;
|
|
} else if (strcmp(value, "YUYV") == 0) {
|
|
front_fmt = V4L2_PIX_FMT_YUYV;
|
|
} else if (strcmp(value, "JPEG") == 0) {
|
|
front_fmt = V4L2_PIX_FMT_JPEG;
|
|
} else if (strcmp(value, "NV12") == 0) {
|
|
front_fmt = V4L2_PIX_FMT_NV12;
|
|
} else if (strcmp(value, "YUV420") == 0
|
|
|| strcmp(value, "I420") == 0
|
|
|| strcmp(value, "YU12") == 0) {
|
|
front_fmt = V4L2_PIX_FMT_YUV420;
|
|
} else if (strcmp(value, "YVU420") == 0
|
|
|| strcmp(value, "YV12") == 0) {
|
|
front_fmt = V4L2_PIX_FMT_YVU420;
|
|
} else if (strcmp(value, "RGGB8") == 0) {
|
|
front_fmt = V4L2_PIX_FMT_SRGGB8;
|
|
} else if (strcmp(value, "BGGR8") == 0) {
|
|
front_fmt = V4L2_PIX_FMT_SBGGR8;
|
|
front_mbus = MEDIA_BUS_FMT_SBGGR8_1X8;
|
|
} else if (strcmp(value, "GRBG8") == 0) {
|
|
front_fmt = V4L2_PIX_FMT_SGRBG8;
|
|
} else if (strcmp(value, "GBRG8") == 0) {
|
|
front_fmt = V4L2_PIX_FMT_SGBRG8;
|
|
} else {
|
|
g_printerr("Unsupported pixelformat %s\n", value);
|
|
exit(1);
|
|
}
|
|
} else if (strcmp(name, "driver") == 0) {
|
|
front_dev_name = strdup(value);
|
|
} else {
|
|
g_printerr("Unknown key '%s' in [front]\n", name);
|
|
exit(1);
|
|
}
|
|
} else if (strcmp(section, "device") == 0) {
|
|
if (strcmp(name, "csi") == 0) {
|
|
media_drv_name = strdup(value);
|
|
} else {
|
|
g_printerr("Unknown key '%s' in [device]\n", name);
|
|
exit(1);
|
|
}
|
|
} else {
|
|
g_printerr("Unknown section '%s' in config file\n", section);
|
|
exit(1);
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
int
|
|
find_dev_node(int maj, int min, char *fnbuf)
|
|
{
|
|
DIR *d;
|
|
struct dirent *dir;
|
|
struct stat info;
|
|
d = opendir("/dev");
|
|
while ((dir = readdir(d)) != NULL) {
|
|
sprintf(fnbuf, "/dev/%s", dir->d_name);
|
|
stat(fnbuf, &info);
|
|
if (!S_ISCHR(info.st_mode)) {
|
|
continue;
|
|
}
|
|
if (major(info.st_rdev) == maj && minor(info.st_rdev) == min) {
|
|
return 0;
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
int
|
|
setup_rear()
|
|
{
|
|
struct media_link_desc link = {0};
|
|
|
|
// Disable the interface<->front link
|
|
link.flags = 0;
|
|
link.source.entity = front_entity_id;
|
|
link.source.index = 0;
|
|
link.sink.entity = interface_entity_id;
|
|
link.sink.index = 0;
|
|
|
|
if (xioctl(media_fd, MEDIA_IOC_SETUP_LINK, &link) < 0) {
|
|
g_printerr("Could not disable front camera link\n");
|
|
return -1;
|
|
}
|
|
|
|
// Enable the interface<->rear link
|
|
link.flags = MEDIA_LNK_FL_ENABLED;
|
|
link.source.entity = rear_entity_id;
|
|
link.source.index = 0;
|
|
link.sink.entity = interface_entity_id;
|
|
link.sink.index = 0;
|
|
|
|
if (xioctl(media_fd, MEDIA_IOC_SETUP_LINK, &link) < 0) {
|
|
g_printerr("Could not enable rear camera link\n");
|
|
return -1;
|
|
}
|
|
|
|
current_width = rear_width;
|
|
current_height = rear_height;
|
|
current_fmt = rear_fmt;
|
|
current_rotate = rear_rotate;
|
|
// Find camera node
|
|
init_sensor(rear_dev, rear_width, rear_height, rear_mbus, rear_rate);
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
setup_front()
|
|
{
|
|
struct media_link_desc link = {0};
|
|
|
|
// Disable the interface<->rear link
|
|
link.flags = 0;
|
|
link.source.entity = rear_entity_id;
|
|
link.source.index = 0;
|
|
link.sink.entity = interface_entity_id;
|
|
link.sink.index = 0;
|
|
|
|
if (xioctl(media_fd, MEDIA_IOC_SETUP_LINK, &link) < 0) {
|
|
g_printerr("Could not disable rear camera link\n");
|
|
return -1;
|
|
}
|
|
|
|
// Enable the interface<->rear link
|
|
link.flags = MEDIA_LNK_FL_ENABLED;
|
|
link.source.entity = front_entity_id;
|
|
link.source.index = 0;
|
|
link.sink.entity = interface_entity_id;
|
|
link.sink.index = 0;
|
|
|
|
if (xioctl(media_fd, MEDIA_IOC_SETUP_LINK, &link) < 0) {
|
|
g_printerr("Could not enable front camera link\n");
|
|
return -1;
|
|
}
|
|
current_width = front_width;
|
|
current_height = front_height;
|
|
current_fmt = front_fmt;
|
|
current_rotate = front_rotate;
|
|
// Find camera node
|
|
init_sensor(front_dev, front_width, front_height, front_mbus, front_rate);
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
find_cameras()
|
|
{
|
|
struct media_entity_desc entity = {0};
|
|
int ret;
|
|
int found = 0;
|
|
|
|
while (1) {
|
|
entity.id = entity.id | MEDIA_ENT_ID_FLAG_NEXT;
|
|
ret = xioctl(media_fd, MEDIA_IOC_ENUM_ENTITIES, &entity);
|
|
if (ret < 0) {
|
|
break;
|
|
}
|
|
printf("At node %s, (0x%x)\n", entity.name, entity.type);
|
|
if (strncmp(entity.name, front_dev_name, strlen(front_dev_name)) == 0) {
|
|
front_entity_id = entity.id;
|
|
find_dev_node(entity.dev.major, entity.dev.minor, front_dev);
|
|
printf("Found front cam, is %s at %s\n", entity.name, front_dev);
|
|
found++;
|
|
}
|
|
if (strncmp(entity.name, rear_dev_name, strlen(rear_dev_name)) == 0) {
|
|
rear_entity_id = entity.id;
|
|
find_dev_node(entity.dev.major, entity.dev.minor, rear_dev);
|
|
printf("Found rear cam, is %s at %s\n", entity.name, rear_dev);
|
|
found++;
|
|
}
|
|
if (entity.type == MEDIA_ENT_F_IO_V4L) {
|
|
interface_entity_id = entity.id;
|
|
find_dev_node(entity.dev.major, entity.dev.minor, dev_name);
|
|
printf("Found v4l2 interface node at %s\n", dev_name);
|
|
}
|
|
}
|
|
if (found < 2) {
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
int
|
|
find_media_fd()
|
|
{
|
|
DIR *d;
|
|
struct dirent *dir;
|
|
int fd;
|
|
char fnbuf[261];
|
|
struct media_device_info mdi = {0};
|
|
d = opendir("/dev");
|
|
while ((dir = readdir(d)) != NULL) {
|
|
if (strncmp(dir->d_name, "media", 5) == 0) {
|
|
sprintf(fnbuf, "/dev/%s", dir->d_name);
|
|
printf("Checking %s\n", fnbuf);
|
|
fd = open(fnbuf, O_RDWR);
|
|
xioctl(fd, MEDIA_IOC_DEVICE_INFO, &mdi);
|
|
printf("Found media device: %s\n", mdi.driver);
|
|
if (strcmp(mdi.driver, media_drv_name) == 0) {
|
|
media_fd = fd;
|
|
return 0;
|
|
}
|
|
close(fd);
|
|
}
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
void
|
|
on_shutter_clicked(GtkWidget *widget, gpointer user_data)
|
|
{
|
|
capture = 1;
|
|
}
|
|
|
|
void
|
|
on_error_close_clicked(GtkWidget *widget, gpointer user_data)
|
|
{
|
|
gtk_widget_hide(error_box);
|
|
}
|
|
|
|
void
|
|
on_camera_switch_clicked(GtkWidget *widget, gpointer user_data)
|
|
{
|
|
stop_capturing(video_fd);
|
|
close(current_fd);
|
|
if (current_is_rear == 1) {
|
|
setup_front();
|
|
current_is_rear = 0;
|
|
} else {
|
|
setup_rear();
|
|
current_is_rear = 1;
|
|
}
|
|
close(video_fd);
|
|
video_fd = open(dev_name, O_RDWR);
|
|
if (video_fd == -1) {
|
|
g_printerr("Error opening video device: %s\n", dev_name);
|
|
return;
|
|
}
|
|
init_device(video_fd);
|
|
start_capturing(video_fd);
|
|
}
|
|
|
|
int
|
|
find_config(char *conffile)
|
|
{
|
|
char buf[512];
|
|
FILE *fp;
|
|
|
|
if(access("/proc/device-tree/compatible", F_OK) != -1) {
|
|
fp = fopen("/proc/device-tree/compatible", "r");
|
|
fgets(buf, 512, fp);
|
|
fclose(fp);
|
|
sprintf(conffile, "/usr/share/megapixels/config/%s.ini", buf);
|
|
if(access(conffile, F_OK) != -1) {
|
|
printf("Found config file at %s\n", conffile);
|
|
return 0;
|
|
}
|
|
sprintf(conffile, "config/%s.ini", buf);
|
|
if(access(conffile, F_OK) != -1) {
|
|
printf("Found config file at %s\n", conffile);
|
|
return 0;
|
|
}
|
|
printf("%s not found\n", conffile);
|
|
} else {
|
|
printf("Could not read device name from device tree\n");
|
|
}
|
|
conffile = "/etc/megapixels.ini";
|
|
if(access(conffile, F_OK) != -1) {
|
|
printf("Found config file at %s\n", conffile);
|
|
return 0;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
int
|
|
main(int argc, char *argv[])
|
|
{
|
|
char conffile[512];
|
|
|
|
find_config(conffile);
|
|
|
|
gtk_init(&argc, &argv);
|
|
g_object_set(gtk_settings_get_default(), "gtk-application-prefer-dark-theme", TRUE, NULL);
|
|
GtkBuilder *builder = gtk_builder_new_from_resource("/org/postmarketos/Megapixels/camera.glade");
|
|
|
|
GtkWidget *window = GTK_WIDGET(gtk_builder_get_object(builder, "window"));
|
|
GtkWidget *preview_box = GTK_WIDGET(gtk_builder_get_object(builder, "preview_box"));
|
|
GtkWidget *shutter = GTK_WIDGET(gtk_builder_get_object(builder, "shutter"));
|
|
GtkWidget *switch_btn = GTK_WIDGET(gtk_builder_get_object(builder, "switch_camera"));
|
|
GtkWidget *settings_btn = GTK_WIDGET(gtk_builder_get_object(builder, "settings"));
|
|
GtkWidget *error_close = GTK_WIDGET(gtk_builder_get_object(builder, "error_close"));
|
|
preview = GTK_WIDGET(gtk_builder_get_object(builder, "preview"));
|
|
error_box = GTK_WIDGET(gtk_builder_get_object(builder, "error_box"));
|
|
error_message = GTK_WIDGET(gtk_builder_get_object(builder, "error_message"));
|
|
g_signal_connect(window, "destroy", G_CALLBACK(gtk_main_quit), NULL);
|
|
g_signal_connect(shutter, "clicked", G_CALLBACK(on_shutter_clicked), NULL);
|
|
g_signal_connect(error_close, "clicked", G_CALLBACK(on_error_close_clicked), NULL);
|
|
g_signal_connect(switch_btn, "clicked", G_CALLBACK(on_camera_switch_clicked), NULL);
|
|
g_signal_connect(preview, "draw", G_CALLBACK(preview_draw), NULL);
|
|
g_signal_connect(preview, "configure-event", G_CALLBACK(preview_configure), NULL);
|
|
|
|
GtkCssProvider *provider = gtk_css_provider_new();
|
|
if (access("camera.css", F_OK) != -1) {
|
|
gtk_css_provider_load_from_path(provider, "camera.css", NULL);
|
|
} else {
|
|
gtk_css_provider_load_from_resource(provider, "/org/postmarketos/Megapixels/camera.css");
|
|
}
|
|
GtkStyleContext *context = gtk_widget_get_style_context(preview_box);
|
|
gtk_style_context_add_provider(context,
|
|
GTK_STYLE_PROVIDER(provider),
|
|
GTK_STYLE_PROVIDER_PRIORITY_USER);
|
|
context = gtk_widget_get_style_context(error_box);
|
|
gtk_style_context_add_provider(context,
|
|
GTK_STYLE_PROVIDER(provider),
|
|
GTK_STYLE_PROVIDER_PRIORITY_USER);
|
|
|
|
int result = ini_parse(conffile, config_ini_handler, NULL);
|
|
if (result == -1) {
|
|
g_printerr("Config file not found\n");
|
|
return 1;
|
|
} else if (result == -2) {
|
|
g_printerr("Could not allocate memory to parse config file\n");
|
|
return 1;
|
|
} else if (result != 0) {
|
|
g_printerr("Could not parse config file\n");
|
|
return 1;
|
|
}
|
|
if (find_media_fd() == -1) {
|
|
g_printerr("Could not find the media node\n");
|
|
show_error("Could not find the media node");
|
|
goto failed;
|
|
}
|
|
if (find_cameras() == -1) {
|
|
g_printerr("Could not find the cameras\n");
|
|
show_error("Could not find the cameras");
|
|
goto failed;
|
|
}
|
|
setup_rear();
|
|
|
|
int fd = open(dev_name, O_RDWR);
|
|
if (fd == -1) {
|
|
g_printerr("Error opening video device: %s\n", dev_name);
|
|
show_error("Error opening the video device");
|
|
goto failed;
|
|
}
|
|
|
|
video_fd = fd;
|
|
|
|
if(init_device(fd) < 0){
|
|
goto failed;
|
|
}
|
|
start_capturing(fd);
|
|
|
|
failed:
|
|
printf("window show\n");
|
|
gtk_widget_show(window);
|
|
g_idle_add((GSourceFunc)get_frame, NULL);
|
|
gtk_main();
|
|
return 0;
|
|
}
|