blob: ea361b243ef42b70b463ced5d32c28e576598ea0 [file] [log] [blame]
// 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/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);
CHECK(!command_line_file_path.empty());
return command_line_file_path;
}
std::unique_ptr<VideoCaptureDevice> FileVideoCaptureDeviceFactory::CreateDevice(
const VideoCaptureDeviceDescriptor& device_descriptor) {
DCHECK(thread_checker_.CalledOnValidThread());
base::AssertBlockingAllowed();
#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::GetDeviceDescriptors(
VideoCaptureDeviceDescriptors* device_descriptors) {
DCHECK(thread_checker_.CalledOnValidThread());
DCHECK(device_descriptors->empty());
base::ThreadRestrictions::SetIOAllowed(true);
const base::FilePath command_line_file_path = GetFilePathFromCommandLine();
device_descriptors->emplace_back(
#if defined(OS_WIN)
base::SysWideToUTF8(command_line_file_path.value()),
kFileVideoCaptureDeviceName, VideoCaptureApi::WIN_DIRECT_SHOW
#elif defined(OS_MACOSX)
command_line_file_path.value(), kFileVideoCaptureDeviceName,
VideoCaptureApi::MACOSX_AVFOUNDATION
#elif defined(OS_LINUX)
command_line_file_path.value(), kFileVideoCaptureDeviceName,
VideoCaptureApi::LINUX_V4L2_SINGLE_PLANE
#else
command_line_file_path.value(), kFileVideoCaptureDeviceName,
VideoCaptureApi::UNKNOWN
#endif
);
}
void FileVideoCaptureDeviceFactory::GetSupportedFormats(
const VideoCaptureDeviceDescriptor& device_descriptor,
VideoCaptureFormats* supported_formats) {
DCHECK(thread_checker_.CalledOnValidThread());
base::AssertBlockingAllowed();
VideoCaptureFormat capture_format;
if (!FileVideoCaptureDevice::GetVideoCaptureFormat(
GetFilePathFromCommandLine(), &capture_format)) {
return;
}
supported_formats->push_back(capture_format);
}
} // namespace media