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camera: Reenabled macOS/iOS support, with rewritten CoreMedia implementation.

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This commit is contained in:
Ryan C. Gordon
2024-02-06 01:19:12 -05:00
parent f8fa08d2b1
commit 99d1337de2
8 changed files with 344 additions and 456 deletions
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10
src/camera/SDL_camera.c
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@@ -73,6 +73,12 @@ const char *SDL_GetCurrentCameraDriver(void)
return camera_driver.name;
}
char *SDL_GetCameraThreadName(SDL_CameraDevice *device, char *buf, size_t buflen)
{
(void)SDL_snprintf(buf, buflen, "SDLCamera%d", (int) device->instance_id);
return buf;
}
int SDL_AddCameraFormat(CameraFormatAddData *data, Uint32 fmt, int w, int h, int interval_numerator, int interval_denominator)
{
SDL_assert(data != NULL);
@@ -683,7 +689,7 @@ SDL_bool SDL_CameraThreadIterate(SDL_CameraDevice *device)
failed = SDL_TRUE;
}
// we can let go of the lock once we've tried to grab a frame of video and maybe moved the output frame from the empty to the filled list.
// we can let go of the lock once we've tried to grab a frame of video and maybe moved the output frame off the empty list.
// this lets us chew up the CPU for conversion and scaling without blocking other threads.
SDL_UnlockMutex(device->lock);
@@ -988,7 +994,7 @@ SDL_Camera *SDL_OpenCameraDevice(SDL_CameraDeviceID instance_id, const SDL_Camer
// Start the camera thread if necessary
if (!camera_driver.impl.ProvidesOwnCallbackThread) {
char threadname[64];
SDL_snprintf(threadname, sizeof (threadname), "SDLCamera%d", (int) instance_id);
SDL_GetCameraThreadName(device, threadname, sizeof (threadname));
device->thread = SDL_CreateThreadInternal(CameraThread, threadname, 0, device);
if (!device->thread) {
ClosePhysicalCameraDevice(device);