Revert of Unify the macOS and iOS capturer implementations

webrtc/modules/video_capture/mac/video_capture_mac.mm

Index: webrtc/modules/video_capture/mac/video_capture_mac.mm
diff --git a/webrtc/modules/video_capture/mac/video_capture_mac.mm b/webrtc/modules/video_capture/mac/video_capture_mac.mm
new file mode 100644
index 0000000000000000000000000000000000000000..08b2aeb39a40cc62b62cb9afcee8995f4dd86452
--- /dev/null
+++ b/webrtc/modules/video_capture/mac/video_capture_mac.mm
@@ -0,0 +1,252 @@
+/*
+ *  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.
+ */
+
+/*
+ *  video_capture_mac.cc
+ *
+ */
+
+#include <QuickTime/QuickTime.h>
+
+#include "webrtc/base/refcount.h"
+#include "webrtc/base/scoped_ref_ptr.h"
+#include "webrtc/modules/video_capture/device_info_impl.h"
+#include "webrtc/modules/video_capture/video_capture_config.h"
+#include "webrtc/modules/video_capture/video_capture_impl.h"
+#include "webrtc/system_wrappers/include/trace.h"
+
+// 10.4 support must be decided runtime. We will just decide which framework to
+// use at compile time "work" classes. One for QTKit, one for QuickTime
+#if __MAC_OS_X_VERSION_MIN_REQUIRED == __MAC_10_4 // QuickTime version
+#include <QuickTime/video_capture_quick_time.h>
+#include <QuickTime/video_capture_quick_time_info.h>
+#else
+#include "webrtc/modules/video_capture/mac/qtkit/video_capture_qtkit.h"
+#include "webrtc/modules/video_capture/mac/qtkit/video_capture_qtkit_info.h"
+#endif
+
+namespace webrtc
+{
+namespace videocapturemodule
+{
+
+// static
+bool CheckOSVersion()
+{
+    // Check OSX version
+    OSErr err = noErr;
+
+    SInt32 version;
+
+    err = Gestalt(gestaltSystemVersion, &version);
+    if (err != noErr)
+    {
+        WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceVideoCapture, 0,
+                     "Could not get OS version");
+        return false;
+    }
+
+    if (version < 0x00001040) // Older version than Mac OSX 10.4
+    {
+        WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceVideoCapture, 0,
+                     "OS version too old: 0x%x", version);
+        return false;
+    }
+
+    WEBRTC_TRACE(webrtc::kTraceDebug, webrtc::kTraceVideoCapture, 0,
+                 "OS version compatible: 0x%x", version);
+
+    return true;
+}
+
+// static
+bool CheckQTVersion()
+{
+    // Check OSX version
+    OSErr err = noErr;
+
+    SInt32 version;
+
+    err = Gestalt(gestaltQuickTime, &version);
+    if (err != noErr)
+    {
+        WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceVideoCapture, 0,
+                     "Could not get QuickTime version");
+        return false;
+    }
+
+    if (version < 0x07000000) // QT v. 7.x or newer (QT 5.0.2 0x05020000)
+    {
+        WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceVideoCapture, 0,
+                     "QuickTime version too old: 0x%x", version);
+        return false;
+    }
+
+    WEBRTC_TRACE(webrtc::kTraceDebug, webrtc::kTraceVideoCapture, 0,
+                 "QuickTime version compatible: 0x%x", version);
+    return true;
+}
+
+/**************************************************************************
+ *
+ *    Create/Destroy a VideoCaptureModule
+ *
+ ***************************************************************************/
+
+/*
+ *   Returns version of the module and its components
+ *
+ *   version                 - buffer to which the version will be written
+ *   remainingBufferInBytes  - remaining number of int8_t in the version
+ *                             buffer
+ *   position                - position of the next empty int8_t in the
+ *                             version buffer
+ */
+
+rtc::scoped_refptr<VideoCaptureModule> VideoCaptureImpl::Create(
+    const int32_t id,
+    const char* deviceUniqueIdUTF8) {
+    if (!CheckOSVersion()) {
+        WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceVideoCapture, id,
+                     "OS version is too old. Could not create video capture "
+                     "module. Returning NULL");
+        return nullptr;
+    }
+
+#if __MAC_OS_X_VERSION_MIN_REQUIRED == __MAC_10_4 // QuickTime version
+    if (!CheckQTVersion())
+    {
+        WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceVideoCapture, id,
+                     "QuickTime version is too old. Could not create video "
+                     "capture module. Returning NULL");
+        return nullptr;
+    }
+
+    WEBRTC_TRACE(webrtc::kTraceInfo, webrtc::kTraceVideoCapture, id,
+                 "%s line %d. QTKit is not supported on this machine. Using "
+                 "QuickTime framework to capture video",
+                 __FILE__, __LINE__);
+
+    rtc::scoped_refptr<VideoCaptureMacQuickTime> newCaptureModule(
+        new rtc::RefCountedObject<VideoCaptureMacQuickTime>(id));
+
+    if (newCaptureModule->Init(id, deviceUniqueIdUTF8) != 0)
+    {
+        WEBRTC_TRACE(webrtc::kTraceDebug, webrtc::kTraceVideoCapture, id,
+                     "could not Create for unique device %s, "
+                     "newCaptureModule->Init()!=0",
+                     deviceUniqueIdUTF8);
+        return nullptr;
+    }
+
+    // Successfully created VideoCaptureMacQuicktime. Return it
+    WEBRTC_TRACE(webrtc::kTraceInfo, webrtc::kTraceVideoCapture, id,
+                 "Module created for unique device %s. Will use QuickTime "
+                 "framework to capture",
+                 deviceUniqueIdUTF8);
+    return newCaptureModule;
+
+#else // QTKit version
+
+    WEBRTC_TRACE(webrtc::kTraceInfo, webrtc::kTraceVideoCapture, id,
+                 "Using QTKit framework to capture video", id);
+
+    rtc::scoped_refptr<VideoCaptureMacQTKit> newCaptureModule(
+        new rtc::RefCountedObject<VideoCaptureMacQTKit>(id));
+
+    if(newCaptureModule->Init(id, deviceUniqueIdUTF8) != 0)
+    {
+        WEBRTC_TRACE(webrtc::kTraceDebug, webrtc::kTraceVideoCapture, id,
+                     "could not Create for unique device %s, "
+                     "newCaptureModule->Init()!=0", deviceUniqueIdUTF8);
+        return nullptr;
+    }
+
+    // Successfully created VideoCaptureMacQuicktime. Return it
+    WEBRTC_TRACE(webrtc::kTraceInfo, webrtc::kTraceVideoCapture, id,
+                 "Module created for unique device %s, will use QTKit "
+                 "framework",deviceUniqueIdUTF8);
+    return newCaptureModule;
+#endif
+}
+
+/**************************************************************************
+ *
+ *    Create/Destroy a DeviceInfo
+ *
+ ***************************************************************************/
+
+VideoCaptureModule::DeviceInfo*
+VideoCaptureImpl::CreateDeviceInfo(const int32_t id)
+{
+
+
+    if (webrtc::videocapturemodule::CheckOSVersion() == false)
+    {
+        WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceVideoCapture, id,
+                     "OS version is too old. Could not create video capture "
+                     "module. Returning NULL");
+        return NULL;
+    }
+
+#if __MAC_OS_X_VERSION_MIN_REQUIRED == __MAC_10_4 // QuickTime version
+    if (webrtc::videocapturemodule::CheckQTVersion() == false)
+    {
+        WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceVideoCapture, id,
+                     "QuickTime version is too old. Could not create video "
+                     "capture module. Returning NULL");
+        return NULL;
+    }
+
+    webrtc::videocapturemodule::VideoCaptureMacQuickTimeInfo* newCaptureInfoModule =
+        new webrtc::videocapturemodule::VideoCaptureMacQuickTimeInfo(id);
+
+    if (!newCaptureInfoModule || newCaptureInfoModule->Init() != 0)
+    {
+        Destroy(newCaptureInfoModule);
+        newCaptureInfoModule = NULL;
+        WEBRTC_TRACE(webrtc::kTraceInfo, webrtc::kTraceVideoCapture, id,
+                     "Failed to Init newCaptureInfoModule created with id %d "
+                     "and device \"\" ", id);
+        return NULL;
+    }
+    WEBRTC_TRACE(webrtc::kTraceInfo, webrtc::kTraceVideoCapture, id,
+                 "VideoCaptureModule created for id", id);
+    return newCaptureInfoModule;
+
+#else // QTKit version
+    webrtc::videocapturemodule::VideoCaptureMacQTKitInfo* newCaptureInfoModule =
+        new webrtc::videocapturemodule::VideoCaptureMacQTKitInfo(id);
+
+    if(!newCaptureInfoModule || newCaptureInfoModule->Init() != 0)
+    {
+        //Destroy(newCaptureInfoModule);
+        delete newCaptureInfoModule;
+        newCaptureInfoModule = NULL;
+        WEBRTC_TRACE(webrtc::kTraceInfo, webrtc::kTraceVideoCapture, id,
+                     "Failed to Init newCaptureInfoModule created with id %d "
+                     "and device \"\" ", id);
+        return NULL;
+    }
+    WEBRTC_TRACE(webrtc::kTraceInfo, webrtc::kTraceVideoCapture, id,
+                 "VideoCaptureModule created for id", id);
+    return newCaptureInfoModule;
+
+#endif
+
+}
+
+/**************************************************************************
+ *
+ *    End Create/Destroy VideoCaptureModule
+ *
+ ***************************************************************************/
+}  // namespace videocapturemodule
+}  // namespace webrtc