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// Copyright (c) 2012 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 "content/browser/media/capture/web_contents_capture_util.h"
#include "base/basictypes.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_piece.h"
#include "base/strings/string_util.h"
namespace {
const char kVirtualDeviceScheme[] = "virtual-media-stream://";
} // namespace
namespace content {
std::string WebContentsCaptureUtil::AppendWebContentsDeviceScheme(
const std::string& device_id) {
return kVirtualDeviceScheme + device_id;
}
std::string WebContentsCaptureUtil::StripWebContentsDeviceScheme(
const std::string& device_id) {
return (IsWebContentsDeviceId(device_id) ?
device_id.substr(arraysize(kVirtualDeviceScheme) - 1) :
device_id);
}
bool WebContentsCaptureUtil::IsWebContentsDeviceId(
const std::string& device_id) {
return StartsWithASCII(device_id, kVirtualDeviceScheme, true);
}
bool WebContentsCaptureUtil::ExtractTabCaptureTarget(
const std::string& device_id_param,
int* render_process_id,
int* render_view_id) {
if (!IsWebContentsDeviceId(device_id_param))
return false;
const std::string device_id = device_id_param.substr(
arraysize(kVirtualDeviceScheme) - 1);
const size_t sep_pos = device_id.find(':');
if (sep_pos == std::string::npos)
return false;
const base::StringPiece component1(device_id.data(), sep_pos);
const base::StringPiece component2(device_id.data() + sep_pos + 1,
device_id.length() - sep_pos - 1);
return (base::StringToInt(component1, render_process_id) &&
base::StringToInt(component2, render_view_id));
}
} // namespace content
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