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testcamera: Add logging for camera FPS (#10525)

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Add frequency logging in SDL_AppIterate.
Log camera specs upon approval.
This commit is contained in:
Qiu Qiang 2024-08-14 11:39:18 -04:00 committed by GitHub
parent efdcfef4b9
commit d60e6e2558
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GPG Key ID: B5690EEEBB952194
1 changed files with 33 additions and 1 deletions
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34
test/testcamera.c
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@ -26,6 +26,11 @@ static SDL_Surface *frame_current = NULL;
static SDL_CameraID front_camera = 0; static SDL_CameraID front_camera = 0;
static SDL_CameraID back_camera = 0; static SDL_CameraID back_camera = 0;
/* For frequency logging */
static Uint64 last_log_time = 0;
static int iterate_count = 0;
static int frame_count = 0;
static void PrintCameraSpecs(SDL_CameraID camera_id) static void PrintCameraSpecs(SDL_CameraID camera_id)
{ {
SDL_CameraSpec **specs = SDL_GetCameraSupportedFormats(camera_id, NULL); SDL_CameraSpec **specs = SDL_GetCameraSupportedFormats(camera_id, NULL);
@ -151,7 +156,7 @@ int SDL_AppInit(void **appstate, int argc, char *argv[])
PrintCameraSpecs(camera_id); PrintCameraSpecs(camera_id);
SDL_CameraSpec *pspec = &spec; SDL_CameraSpec *pspec = &spec;
spec.framerate_numerator = 1000; spec.framerate_numerator = 30;
spec.framerate_denominator = 1; spec.framerate_denominator = 1;
camera = SDL_OpenCamera(camera_id, pspec); camera = SDL_OpenCamera(camera_id, pspec);
@ -236,6 +241,14 @@ int SDL_AppEvent(void *appstate, const SDL_Event *event)
case SDL_EVENT_CAMERA_DEVICE_APPROVED: case SDL_EVENT_CAMERA_DEVICE_APPROVED:
SDL_Log("Camera approved!"); SDL_Log("Camera approved!");
SDL_CameraSpec camera_spec;
SDL_GetCameraFormat(camera, &camera_spec);
float fps = 0;
if (camera_spec.framerate_denominator != 0) {
fps = (float)camera_spec.framerate_numerator / (float)camera_spec.framerate_denominator;
}
SDL_Log("Camera Spec: %dx%d %.2f FPS %s",
camera_spec.width, camera_spec.height, fps, SDL_GetPixelFormatName(camera_spec.format));
break; break;
case SDL_EVENT_CAMERA_DEVICE_DENIED: case SDL_EVENT_CAMERA_DEVICE_DENIED:
@ -251,6 +264,21 @@ int SDL_AppEvent(void *appstate, const SDL_Event *event)
int SDL_AppIterate(void *appstate) int SDL_AppIterate(void *appstate)
{ {
iterate_count++;
Uint64 current_time = SDL_GetTicks();
/* If a minute has passed, log the frequencies and reset the counters */
if (current_time - last_log_time >= 60000) {
SDL_Log("SDL_AppIterate() called %d times in the last minute", iterate_count);
float fps = (float)frame_count / 60.0f;
SDL_Log("SDL_AcquireCameraFrame() FPS: %.2f", fps);
iterate_count = 0;
frame_count = 0;
last_log_time = current_time;
}
SDL_SetRenderDrawColor(renderer, 0x99, 0x99, 0x99, 255); SDL_SetRenderDrawColor(renderer, 0x99, 0x99, 0x99, 255);
SDL_RenderClear(renderer); SDL_RenderClear(renderer);
@ -267,6 +295,8 @@ int SDL_AppIterate(void *appstate)
#endif #endif
if (frame_next) { if (frame_next) {
frame_count++;
if (frame_current) { if (frame_current) {
if (SDL_ReleaseCameraFrame(camera, frame_current) < 0) { if (SDL_ReleaseCameraFrame(camera, frame_current) < 0) {
SDL_Log("err SDL_ReleaseCameraFrame: %s", SDL_GetError()); SDL_Log("err SDL_ReleaseCameraFrame: %s", SDL_GetError());
@ -278,6 +308,8 @@ int SDL_AppIterate(void *appstate)
*/ */
frame_current = frame_next; frame_current = frame_next;
texture_updated = SDL_FALSE; texture_updated = SDL_FALSE;
} else {
return SDL_APP_CONTINUE;
} }
if (frame_current) { if (frame_current) {