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| 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 | |
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