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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "media/capture/video/file_video_capture_device_factory.h" | |
| 6 | |
| 7 #include "base/command_line.h" | |
| 8 #include "base/files/file_path.h" | |
| 9 #include "base/strings/sys_string_conversions.h" | |
| 10 #include "build/build_config.h" | |
| 11 #include "media/base/media_switches.h" | |
| 12 #include "media/capture/video/file_video_capture_device.h" | |
| 13 | |
| 14 namespace media { | |
| 15 | |
| 16 const char kFileVideoCaptureDeviceName[] = | |
| 17 "/dev/placeholder-for-file-backed-fake-capture-device"; | |
| 18 | |
| 19 // Inspects the command line and retrieves the file path parameter. | |
| 20 base::FilePath GetFilePathFromCommandLine() { | |
| 21 base::FilePath command_line_file_path = | |
| 22 base::CommandLine::ForCurrentProcess()->GetSwitchValuePath( | |
| 23 switches::kUseFileForFakeVideoCapture); | |
| 24 CHECK(!command_line_file_path.empty()); | |
| 25 return command_line_file_path; | |
| 26 } | |
| 27 | |
| 28 std::unique_ptr<VideoCaptureDevice> FileVideoCaptureDeviceFactory::CreateDevice( | |
| 29 const VideoCaptureDeviceDescriptor& device_descriptor) { | |
| 30 DCHECK(thread_checker_.CalledOnValidThread()); | |
| 31 #if defined(OS_WIN) | |
| 32 return std::unique_ptr<VideoCaptureDevice>(new FileVideoCaptureDevice( | |
| 33 base::FilePath(base::SysUTF8ToWide(device_descriptor.display_name)))); | |
| 34 #else | |
| 35 return std::unique_ptr<VideoCaptureDevice>(new FileVideoCaptureDevice( | |
| 36 base::FilePath(device_descriptor.display_name))); | |
| 37 #endif | |
| 38 } | |
| 39 | |
| 40 void FileVideoCaptureDeviceFactory::GetDeviceDescriptors( | |
| 41 VideoCaptureDeviceDescriptors* device_descriptors) { | |
| 42 DCHECK(thread_checker_.CalledOnValidThread()); | |
| 43 DCHECK(device_descriptors->empty()); | |
| 44 const base::FilePath command_line_file_path = GetFilePathFromCommandLine(); | |
| 45 device_descriptors->emplace_back( | |
| 46 #if defined(OS_WIN) | |
| 47 base::SysWideToUTF8(command_line_file_path.value()), | |
| 48 kFileVideoCaptureDeviceName, VideoCaptureApi::WIN_DIRECT_SHOW | |
| 49 #elif defined(OS_MACOSX) | |
| 50 command_line_file_path.value(), kFileVideoCaptureDeviceName, | |
| 51 VideoCaptureApi::MACOSX_AVFOUNDATION | |
| 52 #elif defined(OS_LINUX) | |
| 53 command_line_file_path.value(), kFileVideoCaptureDeviceName, | |
| 54 VideoCaptureApi::LINUX_V4L2_SINGLE_PLANE | |
| 55 #else | |
| 56 command_line_file_path.value(), kFileVideoCaptureDeviceName, | |
| 57 VideoCaptureApi::UNKNOWN | |
| 58 #endif | |
| 59 ); | |
| 60 } | |
| 61 | |
| 62 void FileVideoCaptureDeviceFactory::GetSupportedFormats( | |
| 63 const VideoCaptureDeviceDescriptor& device_descriptor, | |
| 64 VideoCaptureFormats* supported_formats) { | |
| 65 DCHECK(thread_checker_.CalledOnValidThread()); | |
| 66 | |
| 67 VideoCaptureFormat capture_format; | |
| 68 if (!FileVideoCaptureDevice::GetVideoCaptureFormat( | |
| 69 GetFilePathFromCommandLine(), &capture_format)) { | |
| 70 return; | |
| 71 } | |
| 72 | |
| 73 supported_formats->push_back(capture_format); | |
| 74 } | |
| 75 | |
| 76 } // namespace media | |
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