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Only check permission on newer iOS and macOS versions

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Björn Ritzl 2020-07-13 08:46:26 +02:00
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2
LICENSE.md
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@ -1,6 +1,6 @@
MIT License
Copyright (c) 2019 Defold
Copyright (c) 2019 Defold Foundation
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal

94
README.md
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@ -1,67 +1,101 @@
# extension-camera
Example of interacting with the camera through native extensions.
Native extension to use device camera to capture frames.
# Disclaimer
Although we aim to provide good example functionality in this example, we cannot guarantee the quality/stability at all times.
Please regard it as just that, an example, and don't rely on this as a dependency for your production code.
# Installation
# Known issues
To use the camera extension in a Defold project this project has to be added as a [Defold library dependency](http://www.defold.com/manuals/libraries/). Open the **game.project** file and in the [Dependencies field in the Project section](https://defold.com/manuals/project-settings/#dependencies) add:
https://github.com/defold/extension-camera/archive/master.zip
Or point to the ZIP file of [a specific release](https://github.com/defold/extension-camera/releases).
# Supported platforms
The currently supported platforms are: OSX + iOS
# FAQ
## How do I use this extension?
## How do I reset macOS camera permission?
Add the package link (https://github.com/defold/extension-camera/archive/master.zip)
to the project setting `project.dependencies`, and you should be good to go.
To test macOS camera permission popup multiple times you can reset the permission from the terminal:
See the [manual](http://www.defold.com/manuals/libraries/) for further info.
```bash
tccutil reset Camera
```
# Lua API
## Type constants
Describes what camera should be used
Describes what camera should be used.
```lua
camera.CAMERA_TYPE_FRONT -- Selfie
camera.CAMERA_TYPE_BACK
```
camera.CAMERA_TYPE_FRONT -- Selfie
camera.CAMERA_TYPE_BACK
## Quality constants
camera.CAPTURE_QUALITY_HIGH
camera.CAPTURE_QUALITY_MEDIUM
camera.CAPTURE_QUALITY_LOW
```lua
camera.CAPTURE_QUALITY_HIGH
camera.CAPTURE_QUALITY_MEDIUM
camera.CAPTURE_QUALITY_LOW
```
## camera.start_capture(type, quality)
Returns true if the capture starts well
## Status constants
if camera.start_capture(camera.CAMERA_TYPE_BACK, camera.CAPTURE_QUALITY_HIGH) then
```lua
camera.STATUS_STARTED
camera.STATUS_STOPPED
camera.STATUS_NOT_PERMITTED
camera.STATUS_ERROR
```
## camera.start_capture(type, quality, callback)
Start camera capture using the specified camera (front/back) and capture quality. This may trigger a camera usage permission popup. When the popup has been dismissed the callback will be invoked with camera start status.
```lua
camera.start_capture(camera.CAMERA_TYPE_BACK, camera.CAPTURE_QUALITY_HIGH, function(self, status)
if status == camera.STATUS_STARTED then
-- do stuff
end
end)
```
## camera.stop_capture()
Stops a previously started capture session
Stops a previously started capture session.
```lua
camera.stop_capture()
```
## camera.get_info()
Gets the info from the current capture session
Gets the info from the current capture session.
```lua
local info = camera.get_info()
print("width", info.width)
print("height", info.height)
```
local info = camera.get_info()
print("width", info.width)
print("height", info.height)
## camera.get_frame()
Retrieves the camera pixel buffer
This buffer has one stream named "rgb", and is of type buffer.VALUE_TYPE_UINT8 and has the value count of 1
Retrieves the camera pixel buffer. This buffer has one stream named "rgb", and is of type `buffer.VALUE_TYPE_UINT8` and has the value count of 1.
self.cameraframe = camera.get_frame()
```lua
self.cameraframe = camera.get_frame()
```

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camera/src/camera.mm
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@ -392,42 +392,50 @@ void CameraPlatform_StartCaptureAuthorized(dmBuffer::HBuffer* buffer, CameraType
void CameraPlatform_StartCapture(dmBuffer::HBuffer* buffer, CameraType type, CaptureQuality quality, CameraInfo& outparams)
{
// Request permission to access the camera.
int status = [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeVideo];
if (status == AVAuthorizationStatusAuthorized)
// Only check for permission on iOS 7+ and macOS 10.14+
if ([AVCaptureDevice respondsToSelector:@selector(authorizationStatusForMediaType:)])
{
// Request permission to access the camera.
int status = [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeVideo];
if (status == AVAuthorizationStatusAuthorized)
{
// The user has previously granted access to the camera.
dmLogInfo("AVAuthorizationStatusAuthorized");
CameraPlatform_StartCaptureAuthorized(buffer, type, quality, outparams);
}
else if (status == AVAuthorizationStatusNotDetermined)
{
dmLogInfo("AVAuthorizationStatusNotDetermined");
// The app hasn't yet asked the user for camera access.
[AVCaptureDevice requestAccessForMediaType:AVMediaTypeVideo completionHandler:^(BOOL granted) {
if (granted) {
dmLogInfo("AVAuthorizationStatusNotDetermined - granted!");
CameraPlatform_StartCaptureAuthorized(buffer, type, quality, outparams);
}
else
{
dmLogInfo("AVAuthorizationStatusNotDetermined - not granted!");
Camera_QueueMessage(STATUS_NOT_PERMITTED);
}
}];
}
else if (status == AVAuthorizationStatusDenied)
{
// The user has previously denied access.
dmLogInfo("AVAuthorizationStatusDenied");
Camera_QueueMessage(STATUS_NOT_PERMITTED);
}
else if (status == AVAuthorizationStatusRestricted)
{
// The user can't grant access due to restrictions.
dmLogInfo("AVAuthorizationStatusRestricted");
Camera_QueueMessage(STATUS_NOT_PERMITTED);
}
}
else
{
// The user has previously granted access to the camera.
dmLogInfo("AVAuthorizationStatusAuthorized");
CameraPlatform_StartCaptureAuthorized(buffer, type, quality, outparams);
}
else if (status == AVAuthorizationStatusNotDetermined)
{
dmLogInfo("AVAuthorizationStatusNotDetermined");
// The app hasn't yet asked the user for camera access.
[AVCaptureDevice requestAccessForMediaType:AVMediaTypeVideo completionHandler:^(BOOL granted) {
if (granted) {
dmLogInfo("AVAuthorizationStatusNotDetermined - granted!");
CameraPlatform_StartCaptureAuthorized(buffer, type, quality, outparams);
}
else
{
dmLogInfo("AVAuthorizationStatusNotDetermined - not granted!");
Camera_QueueMessage(STATUS_NOT_PERMITTED);
}
}];
}
else if (status == AVAuthorizationStatusDenied)
{
// The user has previously denied access.
dmLogInfo("AVAuthorizationStatusDenied");
Camera_QueueMessage(STATUS_NOT_PERMITTED);
}
else if (status == AVAuthorizationStatusRestricted)
{
// The user can't grant access due to restrictions.
dmLogInfo("AVAuthorizationStatusRestricted");
Camera_QueueMessage(STATUS_NOT_PERMITTED);
}
}
void CameraPlatform_StopCapture()

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main/main.script
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@ -35,11 +35,11 @@ local function start_capture(self)
type=resource.TEXTURE_TYPE_2D,
format=resource.TEXTURE_FORMAT_RGB,
num_mip_maps=1 }
label.set_text("logo#status", "Capture Status: ON")
else
label.set_text("logo#status", "Capture Status: ERROR")
end
end)
label.set_text("logo#status", "Capture Status: ON")
end
function init(self)
@ -73,11 +73,11 @@ end
function on_input(self, action_id, action)
--[[if (action_id == hash("space") or action_id == hash("touch")) and action.pressed then
if (action_id == hash("space") or action_id == hash("touch")) and action.pressed then
if self.cameraframe == nil then
start_capture(self)
else
stop_capture(self)
end
end--]]
end
end