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29 #ifndef AudioDestinationMac_h
30 #define AudioDestinationMac_h
33 #include "AudioDestination.h"
34 #include "MediaSession.h"
35 #include <AudioUnit/AudioUnit.h>
36 #include <wtf/RefPtr.h>
40 // An AudioDestination using CoreAudio's default output AudioUnit
42 class AudioDestinationMac : public AudioDestination, public MediaSessionClient {
44 AudioDestinationMac(AudioIOCallback&, float sampleRate);
45 virtual ~AudioDestinationMac();
50 // DefaultOutputUnit callback
51 static OSStatus inputProc(void* userData, AudioUnitRenderActionFlags*, const AudioTimeStamp*, UInt32 busNumber, UInt32 numberOfFrames, AudioBufferList* ioData);
53 OSStatus render(UInt32 numberOfFrames, AudioBufferList* ioData);
55 virtual MediaSession::MediaType mediaType() const override { return MediaSession::WebAudio; }
56 virtual bool canReceiveRemoteControlCommands() const override { return false; }
57 virtual void didReceiveRemoteControlCommand(MediaSession::RemoteControlCommandType) override { }
58 virtual bool overrideBackgroundPlaybackRestriction() const override { return false; }
60 virtual void start() override;
61 virtual void stop() override;
62 virtual bool isPlaying() override { return m_isPlaying; }
64 virtual void pausePlayback() override { stop(); }
65 virtual void resumePlayback() override { start(); }
67 virtual float sampleRate() const override { return m_sampleRate; }
69 AudioUnit m_outputUnit;
70 AudioIOCallback& m_callback;
71 RefPtr<AudioBus> m_renderBus;
76 #if USE(AUDIO_SESSION)
77 std::unique_ptr<MediaSession> m_mediaSession;
81 } // namespace WebCore
83 #endif // AudioDestinationMac_h