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/video/capture/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 "media/base/media_switches.h"
11#include "media/video/capture/file_video_capture_device.h"
12
13namespace media {
14
15const char kFileVideoCaptureDeviceName[] =
16    "/dev/placeholder-for-file-backed-fake-capture-device";
17
18// Inspects the command line and retrieves the file path parameter.
19base::FilePath GetFilePathFromCommandLine() {
20  base::FilePath command_line_file_path =
21      CommandLine::ForCurrentProcess()->GetSwitchValuePath(
22          switches::kUseFileForFakeVideoCapture);
23  CHECK(!command_line_file_path.empty());
24  return command_line_file_path;
25}
26
27scoped_ptr<VideoCaptureDevice> FileVideoCaptureDeviceFactory::Create(
28    const VideoCaptureDevice::Name& device_name) {
29  DCHECK(thread_checker_.CalledOnValidThread());
30#if defined(OS_WIN)
31  return scoped_ptr<VideoCaptureDevice>(new FileVideoCaptureDevice(
32      base::FilePath(base::SysUTF8ToWide(device_name.name()))));
33#else
34  return scoped_ptr<VideoCaptureDevice>(new FileVideoCaptureDevice(
35      base::FilePath(device_name.name())));
36#endif
37}
38
39void FileVideoCaptureDeviceFactory::GetDeviceNames(
40    VideoCaptureDevice::Names* const device_names) {
41  DCHECK(thread_checker_.CalledOnValidThread());
42  DCHECK(device_names->empty());
43  base::FilePath command_line_file_path = GetFilePathFromCommandLine();
44#if defined(OS_WIN)
45  device_names->push_back(VideoCaptureDevice::Name(
46      base::SysWideToUTF8(command_line_file_path.value()),
47      kFileVideoCaptureDeviceName));
48#elif defined(OS_MACOSX)
49  device_names->push_back(VideoCaptureDevice::Name(
50      command_line_file_path.value(),
51      kFileVideoCaptureDeviceName,
52      VideoCaptureDevice::Name::AVFOUNDATION));
53#else
54  device_names->push_back(VideoCaptureDevice::Name(
55      command_line_file_path.value(),
56      kFileVideoCaptureDeviceName));
57#endif
58}
59
60void FileVideoCaptureDeviceFactory::GetDeviceSupportedFormats(
61    const VideoCaptureDevice::Name& device,
62    VideoCaptureFormats* supported_formats) {
63  DCHECK(thread_checker_.CalledOnValidThread());
64  base::File file =
65      FileVideoCaptureDevice::OpenFileForRead(GetFilePathFromCommandLine());
66  VideoCaptureFormat capture_format;
67  FileVideoCaptureDevice::ParseFileAndExtractVideoFormat(&file,
68                                                         &capture_format);
69  supported_formats->push_back(capture_format);
70}
71
72}  // namespace media
73