| // 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/file_video_capture_device_factory.h" |
| |
| #include "base/command_line.h" |
| #include "base/files/file_path.h" |
| #include "base/strings/sys_string_conversions.h" |
| #include "base/threading/scoped_blocking_call.h" |
| #include "base/threading/thread_restrictions.h" |
| #include "build/build_config.h" |
| #include "media/base/media_switches.h" |
| #include "media/capture/video/file_video_capture_device.h" |
| |
| namespace media { |
| |
| const char kFileVideoCaptureDeviceName[] = |
| "/dev/placeholder-for-file-backed-fake-capture-device"; |
| |
| // Inspects the command line and retrieves the file path parameter. |
| base::FilePath GetFilePathFromCommandLine() { |
| base::FilePath command_line_file_path = |
| base::CommandLine::ForCurrentProcess()->GetSwitchValuePath( |
| switches::kUseFileForFakeVideoCapture); |
| return command_line_file_path; |
| } |
| |
| std::unique_ptr<VideoCaptureDevice> FileVideoCaptureDeviceFactory::CreateDevice( |
| const VideoCaptureDeviceDescriptor& device_descriptor) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| base::ScopedBlockingCall scoped_blocking_call(FROM_HERE, |
| base::BlockingType::MAY_BLOCK); |
| #if defined(OS_WIN) |
| return std::unique_ptr<VideoCaptureDevice>(new FileVideoCaptureDevice( |
| base::FilePath(base::SysUTF8ToWide(device_descriptor.display_name())))); |
| #else |
| return std::unique_ptr<VideoCaptureDevice>(new FileVideoCaptureDevice( |
| base::FilePath(device_descriptor.display_name()))); |
| #endif |
| } |
| |
| void FileVideoCaptureDeviceFactory::GetDevicesInfo( |
| GetDevicesInfoCallback callback) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| base::ScopedAllowBlocking allow_blocking; |
| |
| std::vector<VideoCaptureDeviceInfo> devices_info; |
| |
| auto api = |
| #if defined(OS_WIN) |
| VideoCaptureApi::WIN_DIRECT_SHOW; |
| #elif defined(OS_MAC) |
| VideoCaptureApi::MACOSX_AVFOUNDATION; |
| #elif defined(OS_LINUX) || defined(OS_CHROMEOS) |
| VideoCaptureApi::LINUX_V4L2_SINGLE_PLANE; |
| #else |
| VideoCaptureApi::UNKNOWN; |
| #endif |
| |
| devices_info.emplace_back( |
| VideoCaptureDeviceDescriptor(GetFilePathFromCommandLine().AsUTF8Unsafe(), |
| kFileVideoCaptureDeviceName, api)); |
| |
| VideoCaptureFormat capture_format; |
| if (!FileVideoCaptureDevice::GetVideoCaptureFormat( |
| GetFilePathFromCommandLine(), &capture_format)) { |
| std::move(callback).Run({}); |
| return; |
| } |
| devices_info.back().supported_formats.push_back(capture_format); |
| |
| std::move(callback).Run(std::move(devices_info)); |
| } |
| |
| } // namespace media |