Revert of Unify the macOS and iOS capturer implementations

webrtc/modules/video_capture/ios/video_capture_ios.mm

Index: webrtc/modules/video_capture/ios/video_capture_ios.mm
diff --git a/webrtc/modules/video_capture/ios/video_capture_ios.mm b/webrtc/modules/video_capture/ios/video_capture_ios.mm
new file mode 100644
index 0000000000000000000000000000000000000000..7a1f17bd13f75290a4439f26a2a331e843bfe298
--- /dev/null
+++ b/webrtc/modules/video_capture/ios/video_capture_ios.mm
@@ -0,0 +1,106 @@
+/*
+ *  Copyright (c) 2013 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.
+ */
+
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
+#include "webrtc/base/refcount.h"
+#include "webrtc/base/scoped_ref_ptr.h"
+#include "webrtc/modules/video_capture/ios/device_info_ios_objc.h"
+#include "webrtc/modules/video_capture/ios/rtc_video_capture_ios_objc.h"
+#include "webrtc/system_wrappers/include/trace.h"
+
+using namespace webrtc;
+using namespace videocapturemodule;
+
+rtc::scoped_refptr<VideoCaptureModule> VideoCaptureImpl::Create(
+    const int32_t capture_id,
+    const char* deviceUniqueIdUTF8) {
+  return VideoCaptureIos::Create(capture_id, deviceUniqueIdUTF8);
+}
+
+VideoCaptureIos::VideoCaptureIos(const int32_t capture_id)
+    : VideoCaptureImpl(capture_id), is_capturing_(false), id_(capture_id) {
+  capability_.width = kDefaultWidth;
+  capability_.height = kDefaultHeight;
+  capability_.maxFPS = kDefaultFrameRate;
+  capture_device_ = nil;
+}
+
+VideoCaptureIos::~VideoCaptureIos() {
+  if (is_capturing_) {
+    [capture_device_ stopCapture];
+    capture_device_ = nil;
+  }
+}
+
+rtc::scoped_refptr<VideoCaptureModule> VideoCaptureIos::Create(
+    const int32_t capture_id,
+    const char* deviceUniqueIdUTF8) {
+  if (!deviceUniqueIdUTF8[0]) {
+    return NULL;
+  }
+
+  rtc::scoped_refptr<VideoCaptureIos> capture_module(
+      new rtc::RefCountedObject<VideoCaptureIos>(capture_id));
+
+  const int32_t name_length = strlen(deviceUniqueIdUTF8);
+  if (name_length > kVideoCaptureUniqueNameLength)
+    return nullptr;
+
+  capture_module->_deviceUniqueId = new char[name_length + 1];
+  strncpy(capture_module->_deviceUniqueId, deviceUniqueIdUTF8, name_length + 1);
+  capture_module->_deviceUniqueId[name_length] = '\0';
+
+  capture_module->capture_device_ =
+      [[RTCVideoCaptureIosObjC alloc] initWithOwner:capture_module
+                                          captureId:capture_module->id_];
+  if (!capture_module->capture_device_) {
+    return nullptr;
+  }
+
+  if (![capture_module->capture_device_ setCaptureDeviceByUniqueId:[
+              [NSString alloc] initWithCString:deviceUniqueIdUTF8
+                                      encoding:NSUTF8StringEncoding]]) {
+    return nullptr;
+  }
+  return capture_module;
+}
+
+int32_t VideoCaptureIos::StartCapture(
+    const VideoCaptureCapability& capability) {
+  capability_ = capability;
+
+  if (![capture_device_ startCaptureWithCapability:capability]) {
+    return -1;
+  }
+
+  is_capturing_ = true;
+
+  return 0;
+}
+
+int32_t VideoCaptureIos::StopCapture() {
+  if (![capture_device_ stopCapture]) {
+    return -1;
+  }
+
+  is_capturing_ = false;
+  return 0;
+}
+
+bool VideoCaptureIos::CaptureStarted() { return is_capturing_; }
+
+int32_t VideoCaptureIos::CaptureSettings(VideoCaptureCapability& settings) {
+  settings = capability_;
+  settings.rawType = kVideoNV12;
+  return 0;
+}