1 // Copyright (c) 2012 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 "content/browser/renderer_host/media/web_contents_capture_util.h" 6 7 #include "base/basictypes.h" 8 #include "base/strings/string_number_conversions.h" 9 #include "base/strings/string_piece.h" 10 #include "base/strings/string_util.h" 11 12 namespace { 13 14 const char kVirtualDeviceScheme[] = "virtual-media-stream://"; 15 16 } // namespace 17 18 namespace content { 19 20 std::string WebContentsCaptureUtil::AppendWebContentsDeviceScheme( 21 const std::string& device_id) { 22 return kVirtualDeviceScheme + device_id; 23 } 24 25 std::string WebContentsCaptureUtil::StripWebContentsDeviceScheme( 26 const std::string& device_id) { 27 return (IsWebContentsDeviceId(device_id) ? 28 device_id.substr(arraysize(kVirtualDeviceScheme) - 1) : 29 device_id); 30 } 31 32 bool WebContentsCaptureUtil::IsWebContentsDeviceId( 33 const std::string& device_id) { 34 return StartsWithASCII(device_id, kVirtualDeviceScheme, true); 35 } 36 37 bool WebContentsCaptureUtil::ExtractTabCaptureTarget( 38 const std::string& device_id_param, 39 int* render_process_id, 40 int* render_view_id) { 41 if (!IsWebContentsDeviceId(device_id_param)) 42 return false; 43 44 const std::string device_id = device_id_param.substr( 45 arraysize(kVirtualDeviceScheme) - 1); 46 47 const size_t sep_pos = device_id.find(':'); 48 if (sep_pos == std::string::npos) 49 return false; 50 51 const base::StringPiece component1(device_id.data(), sep_pos); 52 const base::StringPiece component2(device_id.data() + sep_pos + 1, 53 device_id.length() - sep_pos - 1); 54 55 return (base::StringToInt(component1, render_process_id) && 56 base::StringToInt(component2, render_view_id)); 57 } 58 59 } // namespace content 60
