Remove deprecated QTKit Video Capture Support

media/capture/video/mac/video_capture_device_factory_mac.mm

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "media/capture/video/mac/video_capture_device_factory_mac.h"
 
 #import <IOKit/audio/IOAudioTypes.h>
 #include <stddef.h>
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/macros.h"
 #include "base/profiler/scoped_tracker.h"
 #include "base/strings/string_util.h"
 #include "base/task_runner_util.h"
 #import "media/base/mac/avfoundation_glue.h"
 #import "media/capture/video/mac/video_capture_device_avfoundation_mac.h"
 #import "media/capture/video/mac/video_capture_device_decklink_mac.h"
 #include "media/capture/video/mac/video_capture_device_mac.h"
-#import "media/capture/video/mac/video_capture_device_qtkit_mac.h"
 
 namespace media {
 
-// In QTKit API, some devices are known to crash if VGA is requested, for them
-// HD is the only supported resolution (see http://crbug.com/396812). In the
-// AVfoundation case, we skip enumerating them altogether. These devices are
-// identified by a characteristic trailing substring of uniqueId. At the moment
-// these are just Blackmagic devices.
+// Blacklisted devices are identified by a characteristic trailing substring of
+// uniqueId. At the moment these are just Blackmagic devices.
 const struct NameAndVid {
   const char* unique_id_signature;
   const int capture_width;
   const int capture_height;
   const float capture_frame_rate;
 } kBlacklistedCameras[] = {{"-01FDA82C8A9C", 1280, 720, 60.0f}};
 
 static bool IsDeviceBlacklisted(const VideoCaptureDevice::Name& name) {
   bool is_device_blacklisted = false;
   for(size_t i = 0;
     !is_device_blacklisted && i < arraysize(kBlacklistedCameras); ++i) {
     is_device_blacklisted =
         base::EndsWith(name.id(),
                        kBlacklistedCameras[i].unique_id_signature,
                        base::CompareCase::INSENSITIVE_ASCII);
   }
   DVLOG_IF(2, is_device_blacklisted) << "Blacklisted camera: " << name.name()
                                      << ", id: " << name.id();
   return is_device_blacklisted;
 }
 
-static scoped_ptr<media::VideoCaptureDevice::Names>
-EnumerateDevicesUsingQTKit() {
-  // TODO(erikchen): Remove ScopedTracker below once http://crbug.com/458397 is
-  // fixed.
-  tracked_objects::ScopedTracker tracking_profile(
-      FROM_HERE_WITH_EXPLICIT_FUNCTION(
-          "458397 media::EnumerateDevicesUsingQTKit"));
-
-  scoped_ptr<VideoCaptureDevice::Names> device_names(
-      new VideoCaptureDevice::Names());
-  NSMutableDictionary* capture_devices =
-      [[[NSMutableDictionary alloc] init] autorelease];
-  [VideoCaptureDeviceQTKit getDeviceNames:capture_devices];
-  for (NSString* key in capture_devices) {
-    VideoCaptureDevice::Name name(
-        [[[capture_devices valueForKey:key] deviceName] UTF8String],
-        [key UTF8String], VideoCaptureDevice::Name::QTKIT);
-    if (IsDeviceBlacklisted(name))
-      name.set_is_blacklisted(true);
-    device_names->push_back(name);
-  }
-  return device_names;
-}
-
-static void RunDevicesEnumeratedCallback(
-    const base::Callback<void(scoped_ptr<media::VideoCaptureDevice::Names>)>&
-        callback,
-    scoped_ptr<media::VideoCaptureDevice::Names> device_names) {
-  // TODO(erikchen): Remove ScopedTracker below once http://crbug.com/458397 is
-  // fixed.
-  tracked_objects::ScopedTracker tracking_profile(
-      FROM_HERE_WITH_EXPLICIT_FUNCTION(
-          "458397 media::RunDevicesEnumeratedCallback"));
-  callback.Run(std::move(device_names));
-}
-
-VideoCaptureDeviceFactoryMac::VideoCaptureDeviceFactoryMac(
-    scoped_refptr<base::SingleThreadTaskRunner> ui_task_runner)
-    : ui_task_runner_(ui_task_runner) {
+VideoCaptureDeviceFactoryMac::VideoCaptureDeviceFactoryMac() {
   thread_checker_.DetachFromThread();
 }
 
 VideoCaptureDeviceFactoryMac::~VideoCaptureDeviceFactoryMac() {
 }
 
 scoped_ptr<VideoCaptureDevice> VideoCaptureDeviceFactoryMac::Create(
     const VideoCaptureDevice::Name& device_name) {
   DCHECK(thread_checker_.CalledOnValidThread());
   DCHECK_NE(device_name.capture_api_type(),
@@ skipping 16 matching lines @@
 void VideoCaptureDeviceFactoryMac::GetDeviceNames(
     VideoCaptureDevice::Names* device_names) {
   // TODO(erikchen): Remove ScopedTracker below once http://crbug.com/458397 is
   // fixed.
   tracked_objects::ScopedTracker tracking_profile(
       FROM_HERE_WITH_EXPLICIT_FUNCTION(
           "458397 VideoCaptureDeviceFactoryMac::GetDeviceNames"));
   DCHECK(thread_checker_.CalledOnValidThread());
   // Loop through all available devices and add to |device_names|.
   NSDictionary* capture_devices;
-  if (AVFoundationGlue::IsAVFoundationSupported()) {
-    DVLOG(1) << "Enumerating video capture devices using AVFoundation";
-    capture_devices = [VideoCaptureDeviceAVFoundation deviceNames];
-    // Enumerate all devices found by AVFoundation, translate the info for each
-    // to class Name and add it to |device_names|.
-    for (NSString* key in capture_devices) {
-      int transport_type = [[capture_devices valueForKey:key] transportType];
-      // Transport types are defined for Audio devices and reused for video.
-      VideoCaptureDevice::Name::TransportType device_transport_type =
-          (transport_type == kIOAudioDeviceTransportTypeBuiltIn ||
-           transport_type == kIOAudioDeviceTransportTypeUSB)
-              ? VideoCaptureDevice::Name::USB_OR_BUILT_IN
-              : VideoCaptureDevice::Name::OTHER_TRANSPORT;
-      VideoCaptureDevice::Name name(
-          [[[capture_devices valueForKey:key] deviceName] UTF8String],
-          [key UTF8String], VideoCaptureDevice::Name::AVFOUNDATION,
-          device_transport_type);
-      if (IsDeviceBlacklisted(name))
-        continue;
-      device_names->push_back(name);
+  CHECK(AVFoundationGlue::IsAVFoundationSupported());
+  DVLOG(1) << "Enumerating video capture devices using AVFoundation";
+  capture_devices = [VideoCaptureDeviceAVFoundation deviceNames];
+  // Enumerate all devices found by AVFoundation, translate the info for each
+  // to class Name and add it to |device_names|.
+  for (NSString* key in capture_devices) {
+    int transport_type = [[capture_devices valueForKey:key] transportType];
+    // Transport types are defined for Audio devices and reused for video.
+    VideoCaptureDevice::Name::TransportType device_transport_type =
+        (transport_type == kIOAudioDeviceTransportTypeBuiltIn ||
+         transport_type == kIOAudioDeviceTransportTypeUSB)
+            ? VideoCaptureDevice::Name::USB_OR_BUILT_IN
+            : VideoCaptureDevice::Name::OTHER_TRANSPORT;
+    VideoCaptureDevice::Name name(
+        [[[capture_devices valueForKey:key] deviceName] UTF8String],
+        [key UTF8String], VideoCaptureDevice::Name::AVFOUNDATION,
+        device_transport_type);
+    if (IsDeviceBlacklisted(name))
+      continue;
+    device_names->push_back(name);
     }

[tommi (sloooow) - chröme, 2016/03/20 22:37:44]

looks like the indent is off 

[perkj_chrome, 2016/03/21 09:45:40]

git cl format missed does not think this is off. Weird. But manually fixing the
indentation and then running git cl format does not revert the manual change....

     // Also retrieve Blackmagic devices, if present, via DeckLink SDK API.
     VideoCaptureDeviceDeckLinkMac::EnumerateDevices(device_names);
-  } else {
-    // We should not enumerate QTKit devices in Device Thread;
-    NOTREACHED();
-  }
 }
 
 void VideoCaptureDeviceFactoryMac::EnumerateDeviceNames(const base::Callback<
     void(scoped_ptr<media::VideoCaptureDevice::Names>)>& callback) {
   DCHECK(thread_checker_.CalledOnValidThread());
-  if (AVFoundationGlue::IsAVFoundationSupported()) {
-    scoped_ptr<VideoCaptureDevice::Names> device_names(
-        new VideoCaptureDevice::Names());
-    GetDeviceNames(device_names.get());
-    callback.Run(std::move(device_names));
-  } else {
-    DVLOG(1) << "Enumerating video capture devices using QTKit";
-    base::PostTaskAndReplyWithResult(
-        ui_task_runner_.get(), FROM_HERE,
-        base::Bind(&EnumerateDevicesUsingQTKit),
-        base::Bind(&RunDevicesEnumeratedCallback, callback));
-  }
+  CHECK(AVFoundationGlue::IsAVFoundationSupported());
+  scoped_ptr<VideoCaptureDevice::Names> device_names(
+      new VideoCaptureDevice::Names());
+  GetDeviceNames(device_names.get());

[tommi (sloooow) - chröme, 2016/03/20 22:37:44]

out of curiosity, what thread are we running on here?

[perkj_chrome, 2016/03/21 09:45:40]

device_task_runnner_ which we changed to be the UI thread on MAC. Also,
AVFoundationGlue is stored in TLS now...

+  callback.Run(std::move(device_names));
 }
 
 void VideoCaptureDeviceFactoryMac::GetDeviceSupportedFormats(
     const VideoCaptureDevice::Name& device,
     VideoCaptureFormats* supported_formats) {
   DCHECK(thread_checker_.CalledOnValidThread());
   switch (device.capture_api_type()) {
   case VideoCaptureDevice::Name::AVFOUNDATION:
     DVLOG(1) << "Enumerating video capture capabilities, AVFoundation";
     [VideoCaptureDeviceAVFoundation getDevice:device
                              supportedFormats:supported_formats];
     break;
-  case VideoCaptureDevice::Name::QTKIT:
-    // Blacklisted cameras provide their own supported format(s), otherwise no
-    // such information is provided for QTKit devices.
-    if (device.is_blacklisted()) {
-      for (size_t i = 0; i < arraysize(kBlacklistedCameras); ++i) {
-        if (base::EndsWith(device.id(),
-                           kBlacklistedCameras[i].unique_id_signature,
-                           base::CompareCase::INSENSITIVE_ASCII)) {
-          supported_formats->push_back(media::VideoCaptureFormat(
-              gfx::Size(kBlacklistedCameras[i].capture_width,
-                        kBlacklistedCameras[i].capture_height),
-              kBlacklistedCameras[i].capture_frame_rate,
-              media::PIXEL_FORMAT_UYVY));
-          break;
-        }
-      }
-    }
-    break;
   case VideoCaptureDevice::Name::DECKLINK:
     DVLOG(1) << "Enumerating video capture capabilities " << device.name();
     VideoCaptureDeviceDeckLinkMac::EnumerateDeviceCapabilities(
         device, supported_formats);
     break;
   default:
     NOTREACHED();
   }
 }
 
 // static
 VideoCaptureDeviceFactory*
 VideoCaptureDeviceFactory::CreateVideoCaptureDeviceFactory(
     scoped_refptr<base::SingleThreadTaskRunner> ui_task_runner) {
-  return new VideoCaptureDeviceFactoryMac(ui_task_runner);
+  return new VideoCaptureDeviceFactoryMac();
 }
 
 }  // namespace media