Reland of Unify the macOS and iOS capturer implementations

webrtc/modules/video_capture/mac/qtkit/video_capture_qtkit_objc.mm

Index: webrtc/modules/video_capture/mac/qtkit/video_capture_qtkit_objc.mm
diff --git a/webrtc/modules/video_capture/mac/qtkit/video_capture_qtkit_objc.mm b/webrtc/modules/video_capture/mac/qtkit/video_capture_qtkit_objc.mm
deleted file mode 100644
index 53e9db7770b0fd96aac6682af96e892de45285e6..0000000000000000000000000000000000000000
--- a/webrtc/modules/video_capture/mac/qtkit/video_capture_qtkit_objc.mm
+++ /dev/null
@@ -1,259 +0,0 @@
-/*
- *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
- *
- *  Use of this source code is governed by a BSD-style license
- *  that can be found in the LICENSE file in the root of the source
- *  tree. An additional intellectual property rights grant can be found
- *  in the file PATENTS.  All contributing project authors may
- *  be found in the AUTHORS file in the root of the source tree.
- */
-
-#define DEFAULT_CAPTURE_DEVICE_INDEX    1
-#define DEFAULT_FRAME_RATE              30
-#define DEFAULT_FRAME_WIDTH             352
-#define DEFAULT_FRAME_HEIGHT            288
-#define ROTATE_CAPTURED_FRAME           1
-#define LOW_QUALITY                     1
-
-#import "webrtc/modules/video_capture/mac/qtkit/video_capture_qtkit_objc.h"
-
-#include "webrtc/system_wrappers/include/trace.h"
-
-using namespace webrtc;
-using namespace videocapturemodule;
-
-@implementation VideoCaptureMacQTKitObjC
-
--(id)init {
-  self = [super init];
-  if (self) {
-    [self initializeVariables];
-  }
-  return self;
-}
-
-- (void)dealloc {
-  if (_captureSession)
-    [_captureSession stopRunning];
-
-  if (_captureVideoDeviceInput) {
-    if ([[_captureVideoDeviceInput device] isOpen])
-      [[_captureVideoDeviceInput device] close];
-
-    [_captureVideoDeviceInput release];
-  }
-
-  [_captureDecompressedVideoOutput release];
-  [_captureSession release];
-  [_captureDevices release];
-  [_lock release];
-
-  [super dealloc];
-}
-
-#pragma mark Public methods
-
-- (void)registerOwner:(VideoCaptureMacQTKit*)owner {
-  [_lock lock];
-  _owner = owner;
-  [_lock unlock];
-}
-
-- (BOOL)setCaptureDeviceById:(char*)uniqueId {
-  if (uniqueId == nil || !strcmp("", uniqueId)) {
-    WEBRTC_TRACE(kTraceInfo, kTraceVideoCapture, 0,
-                 "Incorrect capture id argument");
-    return NO;
-  }
-
-  if (!strcmp(uniqueId, _captureDeviceNameUniqueID))
-    return YES;
-
-  QTCaptureDevice* captureDevice;
-  for(int index = 0; index < _captureDeviceCount; index++) {
-    captureDevice = (QTCaptureDevice*)[_captureDevices objectAtIndex:index];
-    char captureDeviceId[1024] = "";
-    [[captureDevice uniqueID] getCString:captureDeviceId
-                               maxLength:1024
-                                encoding:NSUTF8StringEncoding];
-    if (strcmp(uniqueId, captureDeviceId) == 0) {
-      WEBRTC_TRACE(kTraceInfo, kTraceVideoCapture, 0,
-                   "%s:%d Found capture device id %s as index %d",
-                   __FUNCTION__, __LINE__, captureDeviceId, index);
-      [[captureDevice localizedDisplayName] getCString:_captureDeviceNameUTF8
-                                             maxLength:1024
-                                              encoding:NSUTF8StringEncoding];
-      [[captureDevice uniqueID] getCString:_captureDeviceNameUniqueID
-                                 maxLength:1024
-                                  encoding:NSUTF8StringEncoding];
-      break;
-    }
-    captureDevice = nil;
-  }
-
-  if (!captureDevice)
-    return NO;
-
-  NSError* error;
-  if (![captureDevice open:&error]) {
-    WEBRTC_TRACE(kTraceError, kTraceVideoCapture, 0,
-                 "Failed to open capture device: %s", _captureDeviceNameUTF8);
-    return NO;
-  }
-
-  if (_captureVideoDeviceInput) {
-    [_captureVideoDeviceInput release];
-  }
-  _captureVideoDeviceInput =
-      [[QTCaptureDeviceInput alloc] initWithDevice:captureDevice];
-
-  if (![_captureSession addInput:_captureVideoDeviceInput error:&error]) {
-    WEBRTC_TRACE(kTraceError, kTraceVideoCapture, 0,
-                 "Failed to add input from %s to the capture session",
-                 _captureDeviceNameUTF8);
-    return NO;
-  }
-
-  WEBRTC_TRACE(kTraceInfo, kTraceVideoCapture, 0,
-               "%s:%d successfully added capture device: %s", __FUNCTION__,
-               __LINE__, _captureDeviceNameUTF8);
-  return YES;
-}
-
-- (void)setCaptureHeight:(int)height width:(int)width frameRate:(int)frameRate {
-  _frameWidth = width;
-  _frameHeight = height;
-  _frameRate = frameRate;
-
-  NSDictionary* captureDictionary =
-      [NSDictionary dictionaryWithObjectsAndKeys:
-          [NSNumber numberWithDouble:_frameWidth],
-          (id)kCVPixelBufferWidthKey,
-          [NSNumber numberWithDouble:_frameHeight],
-          (id)kCVPixelBufferHeightKey,
-          [NSNumber numberWithUnsignedInt:kCVPixelFormatType_32ARGB],
-          (id)kCVPixelBufferPixelFormatTypeKey,
-          nil];
-  [_captureDecompressedVideoOutput
-      performSelectorOnMainThread:@selector(setPixelBufferAttributes:)
-                       withObject:captureDictionary
-                    waitUntilDone:YES];
-}
-
-- (void)startCapture {
-  if (_capturing)
-    return;
-
-  [_captureSession startRunning];
-  _capturing = YES;
-}
-
-- (void)stopCapture {
-  if (!_capturing)
-    return;
-
-  [_captureSession stopRunning];
-  _capturing = NO;
-}
-
-#pragma mark Private methods
-
-- (BOOL)initializeVariables {
-  if (NSClassFromString(@"QTCaptureSession") == nil)
-    return NO;
-
-  memset(_captureDeviceNameUTF8, 0, 1024);
-  _framesDelivered = 0;
-  _framesRendered = 0;
-  _captureDeviceCount = 0;
-  _capturing = NO;
-  _captureInitialized = NO;
-  _frameRate = DEFAULT_FRAME_RATE;
-  _frameWidth = DEFAULT_FRAME_WIDTH;
-  _frameHeight = DEFAULT_FRAME_HEIGHT;
-  _lock = [[NSLock alloc] init];
-  _captureSession = [[QTCaptureSession alloc] init];
-  _captureDecompressedVideoOutput =
-      [[QTCaptureDecompressedVideoOutput alloc] init];
-  [_captureDecompressedVideoOutput setDelegate:self];
-
-  [self getCaptureDevices];
-  if (![self initializeVideoCapture])
-    return NO;
-
-  return NO;
-}
-
-- (void)getCaptureDevices {
-  if (_captureDevices)
-    [_captureDevices release];
-
-  _captureDevices = [[NSArray alloc] initWithArray:
-      [QTCaptureDevice inputDevicesWithMediaType:QTMediaTypeVideo]];
-
-  _captureDeviceCount = _captureDevices.count;
-}
-
-- (BOOL)initializeVideoCapture{
-  NSDictionary *captureDictionary =
-      [NSDictionary dictionaryWithObjectsAndKeys:
-          [NSNumber numberWithDouble:_frameWidth],
-          (id)kCVPixelBufferWidthKey,
-          [NSNumber numberWithDouble:_frameHeight],
-          (id)kCVPixelBufferHeightKey,
-          [NSNumber numberWithUnsignedInt:kCVPixelFormatType_32ARGB],
-          (id)kCVPixelBufferPixelFormatTypeKey,
-          nil];
-
-  [_captureDecompressedVideoOutput setPixelBufferAttributes:captureDictionary];
-  [_captureDecompressedVideoOutput setAutomaticallyDropsLateVideoFrames:YES];
-  [_captureDecompressedVideoOutput
-      setMinimumVideoFrameInterval:(NSTimeInterval)1/(float)_frameRate];
-
-  NSError *error;
-  if (![_captureSession addOutput:_captureDecompressedVideoOutput error:&error])
-    return NO;
-
-  return YES;
-}
-
-- (void)captureOutput:(QTCaptureOutput *)captureOutput
-    didDropVideoFrameWithSampleBuffer:(QTSampleBuffer *)sampleBuffer
-                       fromConnection:(QTCaptureConnection *)connection {
-}
-
-- (void)captureOutput:(QTCaptureOutput *)captureOutput
-  didOutputVideoFrame:(CVImageBufferRef)videoFrame
-     withSampleBuffer:(QTSampleBuffer *)sampleBuffer
-       fromConnection:(QTCaptureConnection *)connection {
-
-  [_lock lock];
-  if (!_owner) {
-    [_lock unlock];
-    return;
-  }
-
-  const int kFlags = 0;
-  if (CVPixelBufferLockBaseAddress(videoFrame, kFlags) == kCVReturnSuccess) {
-    void *baseAddress = CVPixelBufferGetBaseAddress(videoFrame);
-    size_t bytesPerRow = CVPixelBufferGetBytesPerRow(videoFrame);
-    size_t frameHeight = CVPixelBufferGetHeight(videoFrame);
-    size_t frameSize = bytesPerRow * frameHeight;
-
-    VideoCaptureCapability tempCaptureCapability;
-    tempCaptureCapability.width = _frameWidth;
-    tempCaptureCapability.height = _frameHeight;
-    tempCaptureCapability.maxFPS = _frameRate;
-    // TODO(wu) : Update actual type and not hard-coded value.
-    tempCaptureCapability.rawType = kVideoBGRA;
-
-    _owner->IncomingFrame((unsigned char*)baseAddress, frameSize,
-                          tempCaptureCapability, 0);
-    CVPixelBufferUnlockBaseAddress(videoFrame, kFlags);
-  }
-  [_lock unlock];
-  _framesDelivered++;
-  _framesRendered++;
-}
-
-@end