Merge pull request #1339 from n1ru4l/ios-codec-option

feat(rn-camera): add codec option for ios

docs/RNCamera.md

@@ -284,8 +284,13 @@ The promise will be fulfilled with an object with some of the following properti
      - `ios` Specifies capture settings suitable for VGA quality (640x480 pixel) video output. (Same as RNCamera.Constants.VideoQuality.480p).
      - `android` Quality level corresponding to the 480p (720 x 480) resolution but with video frame width set to 640.
 
-  If nothing is passed the device's highest camera quality will be used as default.
-
+    If nothing is passed the device's highest camera quality will be used as default.
+ - `iOS` `codec`. This option specifies the codec of the output video. Setting the codec is only supported on `iOS >= 10`. The possible values are:
+   - `RNCamera.Constants.VideoCodec['H264']`
+   - `RNCamera.Constants.VideoCodec['JPEG']`
+   - `RNCamera.Constants.VideoCodec['HVEC']` (`iOS >= 11`)
+   - `RNCamera.Constants.VideoCodec['AppleProRes422']` (`iOS >= 11`)
+   - `RNCamera.Constants.VideoCodec['AppleProRes4444']` (`iOS >= 11`)
  - `maxDuration` (float greater than 0). Specifies the maximum duration of the video to be recorded in seconds. If nothing is specified, no time limit will be used.
 
  - `maxFileSize` (int greater than 0). Specifies the maximum file size, in bytes, of the video to be recorded. For 1mb, for example, use 1*1024*1024. If nothing is specified, no size limit will be used.
@@ -296,6 +301,8 @@ The promise will be fulfilled with an object with some of the following properti
 
  - `uri`: returns the path to the video saved on your app's cache directory.
 
+ - `iOS` `codec`: the codec of the recorded video. One of `RNCamera.Constants.VideoCodec`
+
  #### `stopRecording: void`
 
  Should be called after recordAsync() to make the promise be fulfilled and get the video uri.

ios/RN/RNCamera.h

@@ -30,6 +30,7 @@
 @property (assign, nonatomic) float focusDepth;
 @property (assign, nonatomic) NSInteger whiteBalance;
 @property (nonatomic, assign, getter=isReadingBarCodes) BOOL barCodeReading;
+@property(assign, nonatomic) AVVideoCodecType videoCodecType;
 
 - (id)initWithBridge:(RCTBridge *)bridge;
 - (void)updateType;

ios/RN/RNCamera.m

@@ -404,7 +404,21 @@ - (void)record:(NSDictionary *)options resolve:(RCTPromiseResolveBlock)resolve r
 
         AVCaptureConnection *connection = [self.movieFileOutput connectionWithMediaType:AVMediaTypeVideo];
         [connection setVideoOrientation:[RNCameraUtils videoOrientationForInterfaceOrientation:[[UIApplication sharedApplication] statusBarOrientation]]];
-
+
+        if (options[@"codec"]) {
+          AVVideoCodecType videoCodecType = options[@"codec"];
+          if (@available(iOS 10, *)) {
+            if ([self.movieFileOutput.availableVideoCodecTypes containsObject:videoCodecType]) {
+              [self.movieFileOutput setOutputSettings:@{AVVideoCodecKey:videoCodecType} forConnection:connection];
+              self.videoCodecType = videoCodecType;
+            } else {
+              RCTLogWarn(@"%s: Video Codec '%@' is not supported on this device.", __func__, videoCodecType);
+            }
+          } else {
+            RCTLogWarn(@"%s: Setting videoCodec is only supported above iOS version 10.", __func__);
+          }
+        }
+
         dispatch_async(self.sessionQueue, ^{
             NSString *path = [RNFileSystem generatePathInDirectory:[[RNFileSystem cacheDirectoryPath] stringByAppendingString:@"Camera"] withExtension:@".mov"];
             NSURL *outputURL = [[NSURL alloc] initFileURLWithPath:path];
@@ -714,12 +728,18 @@ - (void)captureOutput:(AVCaptureFileOutput *)captureOutput didFinishRecordingToO
         }
     }
     if (success && self.videoRecordedResolve != nil) {
-        self.videoRecordedResolve(@{ @"uri": outputFileURL.absoluteString });
+      AVVideoCodecType videoCodec = self.videoCodecType;
+      if (videoCodec == nil) {
+        videoCodec = [self.movieFileOutput.availableVideoCodecTypes firstObject];
+      }
+
+      self.videoRecordedResolve(@{ @"uri": outputFileURL.absoluteString, @"codec":videoCodec });
     } else if (self.videoRecordedReject != nil) {
         self.videoRecordedReject(@"E_RECORDING_FAILED", @"An error occurred while recording a video.", error);
     }
     self.videoRecordedResolve = nil;
     self.videoRecordedReject = nil;
+    self.videoCodecType = nil;
 
     [self cleanupMovieFileCapture];
     // If face detection has been running prior to recording to file

ios/RN/RNCameraManager.h

@@ -49,6 +49,7 @@ typedef NS_ENUM(NSInteger, RNCameraVideoResolution) {
 @interface RNCameraManager : RCTViewManager <RCTBridgeModule>
 
 + (NSDictionary *)validBarCodeTypes;
++ (NSDictionary *)validCodecTypes;
 
 @end
 

ios/RN/RNCameraManager.m

@@ -55,6 +55,7 @@ - (NSDictionary *)constantsToExport
                      @"480p": @(RNCameraVideo4x3),
                      @"4:3": @(RNCameraVideo4x3),
                      },
+             @"VideoCodec": [[self class] validCodecTypes],
              @"BarCodeType" : [[self class] validBarCodeTypes],
              @"FaceDetection" : [[self  class] faceDetectorConstants]
              };
@@ -65,6 +66,24 @@ - (NSDictionary *)constantsToExport
     return @[@"onCameraReady", @"onMountError", @"onBarCodeRead", @"onFacesDetected"];
 }
 
++ (NSDictionary *)validCodecTypes
+{
+    if (@available(iOS 11, *)) {
+        return @{
+                 @"H264": AVVideoCodecTypeH264,
+                 @"HVEC": AVVideoCodecTypeHEVC,
+                 @"JPEG": AVVideoCodecTypeJPEG,
+                 @"AppleProRes422": AVVideoCodecTypeAppleProRes422,
+                 @"AppleProRes4444": AVVideoCodecTypeAppleProRes4444
+                 };
+    } else {
+        return @{
+                 @"H264": AVVideoCodecH264,
+                 @"JPEG": AVVideoCodecJPEG
+                 };
+    }
+}
+
 + (NSDictionary *)validBarCodeTypes
 {
     return @{

src/RNCamera.js

@@ -35,6 +35,7 @@ type RecordingOptions = {
   maxDuration?: number,
   maxFileSize?: number,
   quality?: number | string,
+  codec?: string,
   mute?: boolean,
 };
 
@@ -96,6 +97,7 @@ export default class Camera extends React.Component<PropsType> {
     AutoFocus: CameraManager.AutoFocus,
     WhiteBalance: CameraManager.WhiteBalance,
     VideoQuality: CameraManager.VideoQuality,
+    VideoCodec: CameraManager.VideoCodec,
     BarCodeType: CameraManager.BarCodeType,
     FaceDetection: CameraManager.FaceDetection,
   };