| // 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. |
| |
| #ifndef CONTENT_RENDERER_MEDIA_MEDIA_STREAM_SOURCE_H_ |
| #define CONTENT_RENDERER_MEDIA_MEDIA_STREAM_SOURCE_H_ |
| |
| #include "base/callback.h" |
| #include "base/compiler_specific.h" |
| #include "base/logging.h" |
| #include "content/common/content_export.h" |
| #include "content/common/media/media_stream_options.h" |
| #include "third_party/WebKit/public/platform/WebMediaStreamSource.h" |
| |
| namespace blink { |
| class WebMediaStreamTrack; |
| } // namespace blink |
| |
| namespace content { |
| |
| class CONTENT_EXPORT MediaStreamSource |
| : NON_EXPORTED_BASE(public blink::WebMediaStreamSource::ExtraData) { |
| public: |
| typedef base::Callback<void(const blink::WebMediaStreamSource& source)> |
| SourceStoppedCallback; |
| |
| typedef base::Callback<void(MediaStreamSource* source, |
| bool success)> ConstraintsCallback; |
| |
| // Source constraints key for |
| // http://dev.w3.org/2011/webrtc/editor/getusermedia.html. |
| static const char kSourceId[]; |
| |
| MediaStreamSource(); |
| virtual ~MediaStreamSource(); |
| |
| // Returns device information about a source that has been created by a |
| // JavaScript call to GetUserMedia, e.g., a camera or microphone. |
| const StreamDeviceInfo& device_info() const { |
| return device_info_; |
| } |
| |
| // Stops the source (by calling DoStopSource()). This sets the |
| // WebMediaStreamSource::readyState to ended, triggers the |stop_callback_| |
| // if set. All pointers to this object are invalid after calling this. |
| void StopSource(); |
| |
| void ResetSourceStoppedCallback() { |
| DCHECK(!stop_callback_.is_null()); |
| stop_callback_.Reset(); |
| } |
| |
| protected: |
| // Called when StopSource is called. It allows derived classes to implement |
| // its own Stop method. |
| virtual void DoStopSource() = 0; |
| |
| // Sets device information about a source that has been created by a |
| // JavaScript call to GetUserMedia. F.E a camera or microphone. |
| void SetDeviceInfo(const StreamDeviceInfo& device_info) { |
| device_info_ = device_info; |
| } |
| |
| // Sets a callback that will be triggered when StopSource is called. |
| void SetStopCallback(const SourceStoppedCallback& stop_callback) { |
| DCHECK(stop_callback_.is_null()); |
| stop_callback_ = stop_callback; |
| } |
| |
| private: |
| StreamDeviceInfo device_info_; |
| SourceStoppedCallback stop_callback_; |
| |
| DISALLOW_COPY_AND_ASSIGN(MediaStreamSource); |
| }; |
| |
| } // namespace content |
| |
| #endif // CONTENT_RENDERER_MEDIA_MEDIA_STREAM_SOURCE_H_ |