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camera: Add an optional property that reports if a camera is back or front.

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This is useful for iOS and Android, so an app can find the camera it cares
about in the list of devices.
This commit is contained in:
Ryan C. Gordon
2024-02-07 09:17:01 -05:00
parent 0b8617f71d
commit 8db2a3b27a
3 changed files with 37 additions and 6 deletions
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28
src/camera/coremedia/SDL_camera_coremedia.m
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@@ -386,20 +386,36 @@ static SDL_bool FindCoreMediaCameraDeviceByUniqueID(SDL_CameraDevice *device, vo
return ([uniqueid isEqualToString:avdev.uniqueID]) ? SDL_TRUE : SDL_FALSE;
}
static void MaybeAddDevice(AVCaptureDevice *device)
static void MaybeAddDevice(AVCaptureDevice *avdevice)
{
if (!device.connected) {
if (!avdevice.connected) {
return; // not connected.
} else if (![device hasMediaType:AVMediaTypeVideo]) {
} else if (![avdevice hasMediaType:AVMediaTypeVideo]) {
return; // not a camera.
} else if (SDL_FindPhysicalCameraDeviceByCallback(FindCoreMediaCameraDeviceByUniqueID, (__bridge void *) device.uniqueID)) {
} else if (SDL_FindPhysicalCameraDeviceByCallback(FindCoreMediaCameraDeviceByUniqueID, (__bridge void *) avdevice.uniqueID)) {
return; // already have this one.
}
CameraFormatAddData add_data;
GatherCameraSpecs(device, &add_data);
GatherCameraSpecs(avdevice, &add_data);
if (add_data.num_specs > 0) {
SDL_AddCameraDevice(device.localizedName.UTF8String, add_data.num_specs, add_data.specs, (void *) CFBridgingRetain(device));
SDL_CameraDevice *device = SDL_AddCameraDevice(avdevice.localizedName.UTF8String, add_data.num_specs, add_data.specs, (void *) CFBridgingRetain(avdevice));
if (device) {
const char *posstr = NULL;
if (avdevice.position == AVCaptureDevicePositionFront) {
posstr = "front";
} else if (avdevice.position == AVCaptureDevicePositionBack) {
posstr = "back";
}
if (posstr) {
SDL_Camera *camera = (SDL_Camera *) device; // currently there's no separation between physical and logical device.
SDL_PropertiesID props = SDL_GetCameraProperties(camera);
if (props) {
SDL_SetStringProperty(props, SDL_PROP_CAMERA_POSITION_STRING, posstr);
}
}
}
}
SDL_free(add_data.specs);
}