From 0479d7c79a7fd6f112e8dc7e45c009cf6602dbaa Mon Sep 17 00:00:00 2001 From: Steve Kondik Date: Thu, 14 Jan 2016 02:46:40 -0800 Subject: audiopolicy: Add notification when default effects are updated * In M, we now have the ability to define a default set of audio effect on a per-stream basis. This allows us to get around the problem of apps not sending the control intents so we can implement smart global effects for specific media types. * We still need a session id in order to get a handle and configure them from an app like AudioFX, so we'll need to add some plumbing in order to send an event to interested applications. * This patch implements the native side of this. The Java layer will call down thru AudioSystem and register a callback which will be invoked by the audio policy when default effects are updated on a stream. This callback will receive both the stream type as well as the session id. * Attaching this listener requires that the caller hold the MODIFY_AUDIO_ROUTING permission. Change-Id: I142b15f2585ffca6a953c3e828e2a7c07b24f56c --- include/media/AudioSystem.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/media/AudioSystem.h') diff --git a/include/media/AudioSystem.h b/include/media/AudioSystem.h index 26a0bb2..35b06ba 100644 --- a/include/media/AudioSystem.h +++ b/include/media/AudioSystem.h @@ -31,6 +31,8 @@ namespace android { typedef void (*audio_error_callback)(status_t err); typedef void (*dynamic_policy_callback)(int event, String8 regId, int val); +typedef void (*effect_session_callback)(int event, + audio_stream_type_t stream, audio_unique_id_t sessionId, bool added); class IAudioFlinger; class IAudioPolicyService; @@ -92,6 +94,7 @@ public: static void setErrorCallback(audio_error_callback cb); static void setDynPolicyCallback(dynamic_policy_callback cb); + static status_t setEffectSessionCallback(effect_session_callback cb); // helper function to obtain AudioFlinger service handle static const sp get_audio_flinger(); @@ -419,6 +422,9 @@ private: virtual void onAudioPortListUpdate(); virtual void onAudioPatchListUpdate(); virtual void onDynamicPolicyMixStateUpdate(String8 regId, int32_t state); + virtual void onOutputSessionEffectsUpdate(audio_stream_type_t stream, + audio_unique_id_t sessionId, + bool added); private: Mutex mLock; @@ -438,6 +444,7 @@ private: static sp gAudioFlinger; static audio_error_callback gAudioErrorCallback; static dynamic_policy_callback gDynPolicyCallback; + static effect_session_callback gEffectSessionCallback; static size_t gInBuffSize; // previous parameters for recording buffer size queries -- cgit v1.1