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v4l2_still: add option to specify video source 

https://jira.digi.com/browse/DEL-1225

Signed-off-by: Javier Viguera <javier.viguera@digi.com>
This commit is contained in:
Javier Viguera 2014-10-08 16:47:03 +02:00
parent 9542bd6b13
commit bb66738f05
1 changed files with 7 additions and 3 deletions
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10
meta-digi-dey/recipes-digi/dey-examples/files/v4l2_test/v4l2_still.c
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@ -69,6 +69,7 @@ extern "C" {
static int g_bpp = 16; static int g_bpp = 16;
static int g_camera_framerate = 30; static int g_camera_framerate = 30;
static int g_capture_mode = 0; static int g_capture_mode = 0;
static char g_v4l_device[100] = "/dev/video0";
void usage(void) void usage(void)
{ {
@ -81,6 +82,7 @@ extern "C" {
"-c Convert to YUV420P. This option is valid for interleaved pixel\n" "-c Convert to YUV420P. This option is valid for interleaved pixel\n"
" formats only - YUYV, UYVY, YUV444\n" " formats only - YUYV, UYVY, YUV444\n"
"-m Capture mode, 0-low resolution(default), 1-high resolution \n" "-m Capture mode, 0-low resolution(default), 1-high resolution \n"
"-d Camera select, /dev/video0, /dev/video1 \n"
"-fr Capture frame rate, 30fps by default\n" "-fr Capture frame rate, 30fps by default\n"
"The output is saved in ./still.uyvy\n" "The output is saved in ./still.uyvy\n"
); );
@ -162,15 +164,14 @@ extern "C" {
int v4l_capture_setup(int * fd_v4l) int v4l_capture_setup(int * fd_v4l)
{ {
char v4l_device[100] = "/dev/video0";
struct v4l2_streamparm parm; struct v4l2_streamparm parm;
struct v4l2_format fmt; struct v4l2_format fmt;
struct v4l2_crop crop; struct v4l2_crop crop;
int ret = 0; int ret = 0;
if ((*fd_v4l = open(v4l_device, O_RDWR, 0)) < 0) if ((*fd_v4l = open(g_v4l_device, O_RDWR, 0)) < 0)
{ {
printf("Unable to open %s\n", v4l_device); printf("Unable to open %s\n", g_v4l_device);
return -1; return -1;
} }
@ -326,6 +327,9 @@ exit1:
return -1; return -1;
} }
} }
else if (strcmp(argv[i], "-d") == 0) {
strcpy(g_v4l_device, argv[++i]);
}
else if (strcmp(argv[i], "-fr") == 0) { else if (strcmp(argv[i], "-fr") == 0) {
if (argv[++i]) if (argv[++i])
g_camera_framerate = atoi(argv[i]); g_camera_framerate = atoi(argv[i]);