| /* |
| * Copyright (C) 2011 Ericsson AB. All rights reserved. |
| * Copyright (C) 2013 Google Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * 3. Neither the name of Ericsson nor the names of its contributors |
| * may be used to endorse or promote products derived from this |
| * software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_MEDIASTREAM_MEDIA_STREAM_COMPONENT_H_ |
| #define THIRD_PARTY_BLINK_RENDERER_PLATFORM_MEDIASTREAM_MEDIA_STREAM_COMPONENT_H_ |
| |
| #include <memory> |
| |
| #include "third_party/blink/public/platform/modules/mediastream/web_media_stream_track.h" |
| #include "third_party/blink/public/platform/web_vector.h" |
| #include "third_party/blink/renderer/platform/audio/audio_source_provider.h" |
| #include "third_party/blink/renderer/platform/heap/handle.h" |
| #include "third_party/blink/renderer/platform/mediastream/media_constraints.h" |
| #include "third_party/blink/renderer/platform/mediastream/media_stream_track_platform.h" |
| #include "third_party/blink/renderer/platform/wtf/forward.h" |
| #include "third_party/blink/renderer/platform/wtf/text/wtf_string.h" |
| #include "third_party/blink/renderer/platform/wtf/threading_primitives.h" |
| |
| namespace blink { |
| |
| class MediaStreamSource; |
| class WebAudioSourceProvider; |
| |
| // A MediaStreamComponent is a MediaStreamTrack. |
| // TODO(hta): Consider merging the two classes. |
| |
| class PLATFORM_EXPORT MediaStreamComponent final |
| : public GarbageCollected<MediaStreamComponent> { |
| USING_PRE_FINALIZER(MediaStreamComponent, Dispose); |
| |
| private: |
| static int GenerateUniqueId(); |
| |
| public: |
| MediaStreamComponent(MediaStreamSource*); |
| MediaStreamComponent(const String& id, MediaStreamSource*); |
| |
| MediaStreamComponent* Clone() const; |
| |
| // |m_trackData| may hold pointers to GC objects indirectly, and it may touch |
| // eagerly finalized objects in destruction. |
| // So this class runs pre-finalizer to finalize |m_trackData| promptly. |
| void Dispose(); |
| |
| MediaStreamSource* Source() const { return source_.Get(); } |
| |
| // This is the same as the id of the |MediaStreamTrack|. It is unique in most |
| // contexts but collisions can occur e.g. if tracks are created by different |
| // |RTCPeerConnection|s or a remote track ID is signaled to be added, removed |
| // and then re-added resulting in a new track object the second time around. |
| String Id() const { return id_; } |
| // Uniquely identifies this component. |
| int UniqueId() const { return unique_id_; } |
| bool Enabled() const { return enabled_; } |
| void SetEnabled(bool enabled) { enabled_ = enabled; } |
| bool Muted() const { return muted_; } |
| void SetMuted(bool muted) { muted_ = muted; } |
| WebMediaStreamTrack::ContentHintType ContentHint() { return content_hint_; } |
| void SetContentHint(WebMediaStreamTrack::ContentHintType); |
| const MediaConstraints& Constraints() const { return constraints_; } |
| void SetConstraints(const MediaConstraints& constraints) { |
| constraints_ = constraints; |
| } |
| AudioSourceProvider* GetAudioSourceProvider() { return &source_provider_; } |
| void SetSourceProvider(WebAudioSourceProvider* provider) { |
| source_provider_.Wrap(provider); |
| } |
| |
| MediaStreamTrackPlatform* GetPlatformTrack() const { |
| return platform_track_.get(); |
| } |
| void SetPlatformTrack( |
| std::unique_ptr<MediaStreamTrackPlatform> platform_track) { |
| platform_track_ = std::move(platform_track); |
| } |
| void GetSettings(MediaStreamTrackPlatform::Settings&); |
| |
| void Trace(Visitor*) const; |
| |
| private: |
| // AudioSourceProviderImpl wraps a WebAudioSourceProvider::provideInput() |
| // calls into chromium to get a rendered audio stream. |
| |
| class PLATFORM_EXPORT AudioSourceProviderImpl final |
| : public AudioSourceProvider { |
| public: |
| AudioSourceProviderImpl() : web_audio_source_provider_(nullptr) {} |
| |
| ~AudioSourceProviderImpl() override = default; |
| |
| // Wraps the given blink::WebAudioSourceProvider to |
| // blink::AudioSourceProvider. |
| void Wrap(WebAudioSourceProvider*); |
| |
| // blink::AudioSourceProvider |
| void ProvideInput(AudioBus*, uint32_t frames_to_process) override; |
| |
| private: |
| WebAudioSourceProvider* web_audio_source_provider_; |
| Mutex provide_input_lock_; |
| |
| // Used to wrap AudioBus to be passed into |web_audio_source_provider_|. |
| WebVector<float*> web_audio_data_; |
| }; |
| |
| AudioSourceProviderImpl source_provider_; |
| Member<MediaStreamSource> source_; |
| String id_; |
| int unique_id_; |
| bool enabled_ = true; |
| bool muted_ = false; |
| WebMediaStreamTrack::ContentHintType content_hint_ = |
| WebMediaStreamTrack::ContentHintType::kNone; |
| MediaConstraints constraints_; |
| std::unique_ptr<MediaStreamTrackPlatform> platform_track_; |
| }; |
| |
| typedef HeapVector<Member<MediaStreamComponent>> MediaStreamComponentVector; |
| |
| } // namespace blink |
| |
| #endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_MEDIASTREAM_MEDIA_STREAM_COMPONENT_H_ |