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verbose on-screen error messages

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This commit is contained in:
Maxim Devaev 2025-05-26 20:06:06 +03:00
parent 5b18e29555
commit aec8431024
3 changed files with 30 additions and 6 deletions
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10
src/libs/capture.c
View File

@ -193,6 +193,12 @@ int us_capture_open(us_capture_s *cap) {
_LOG_DEBUG("Capture device fd=%d opened", run->fd);
if (cap->dv_timings && cap->persistent) {
struct v4l2_control ctl = {.id = V4L2_CID_DV_RX_POWER_PRESENT};
if (!us_xioctl(run->fd, VIDIOC_G_CTRL, &ctl)) {
if (!ctl.value) {
goto error_no_cable;
}
}
_LOG_DEBUG("Probing DV-timings or QuerySTD ...");
if (_capture_open_dv_timings(cap, false) < 0) {
US_ONCE_FOR(run->open_error_once, __LINE__, {
@ -248,6 +254,10 @@ error_no_device:
us_capture_close(cap);
return US_ERROR_NO_DEVICE;
error_no_cable:
us_capture_close(cap);
return US_ERROR_NO_CABLE;
error_no_signal:
us_capture_close(cap);
return US_ERROR_NO_DATA;

3
src/libs/errors.h
View File

@ -24,4 +24,5 @@
#define US_ERROR_COMMON -1
#define US_ERROR_NO_DEVICE -2
#define US_ERROR_NO_DATA -3
#define US_ERROR_NO_CABLE -3
#define US_ERROR_NO_DATA -4

23
src/ustreamer/stream.c
View File

@ -529,6 +529,8 @@ static int _stream_init_loop(us_stream_s *stream) {
int once = 0;
while (!atomic_load(&stream->run->stop)) {
char *blank_reason = "< NO SIGNAL >";
# ifdef WITH_GPIO
us_gpio_set_stream_online(false);
# endif
@ -554,16 +556,27 @@ static int _stream_init_loop(us_stream_s *stream) {
switch (us_capture_open(stream->cap)) {
case 0: break;
case US_ERROR_NO_DEVICE:
blank_reason = "< NO CAPTURE DEVICE >";
goto known_error;
case US_ERROR_NO_CABLE:
blank_reason = "< NO VIDEO SOURCE >";
goto known_error;
case US_ERROR_NO_DATA:
US_ONCE({ US_LOG_INFO("Waiting for the capture device ..."); });
goto offline_and_retry;
goto known_error;
default:
once = 0;
goto offline_and_retry;
goto unknown_error;
}
us_encoder_open(stream->enc, stream->cap);
return 0;
known_error:
US_ONCE({ US_LOG_INFO("Waiting for the capture device ..."); });
goto offline_and_retry;
unknown_error:
once = 0;
goto offline_and_retry;
offline_and_retry:
for (uint count = 0; count < stream->error_delay * 10; ++count) {
if (atomic_load(&run->stop)) {
@ -577,7 +590,7 @@ static int _stream_init_loop(us_stream_s *stream) {
width = stream->cap->width;
height = stream->cap->height;
}
us_blank_draw(run->blank, "< NO SIGNAL >", width, height);
us_blank_draw(run->blank, blank_reason, width, height);
_stream_update_captured_fpsi(stream, run->blank->raw, false);
_stream_expose_jpeg(stream, run->blank->jpeg);