diff options
Diffstat (limited to 'include/media/IAudioFlinger.h')
| -rw-r--r-- | include/media/IAudioFlinger.h | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/include/media/IAudioFlinger.h b/include/media/IAudioFlinger.h index 9c3067e..eaf7780 100644 --- a/include/media/IAudioFlinger.h +++ b/include/media/IAudioFlinger.h @@ -49,9 +49,13 @@ public: TRACK_DEFAULT = 0, // client requests a default AudioTrack TRACK_TIMED = 1, // client requests a TimedAudioTrack TRACK_FAST = 2, // client requests a fast AudioTrack or AudioRecord + TRACK_OFFLOAD = 4, // client requests offload to hw codec }; typedef uint32_t track_flags_t; + // invariant on exit for all APIs that return an sp<>: + // (return value != 0) == (*status == NO_ERROR) + /* create an audio track and registers it with AudioFlinger. * return null if the track cannot be created. */ @@ -66,6 +70,10 @@ public: audio_io_handle_t output, pid_t tid, // -1 means unused, otherwise must be valid non-0 int *sessionId, + // input: ignored + // output: server's description of IAudioTrack for display in logs. + // Don't attempt to parse, as the format could change. + String8& name, status_t *status) = 0; virtual sp<IAudioRecord> openRecord( @@ -74,7 +82,7 @@ public: audio_format_t format, audio_channel_mask_t channelMask, size_t frameCount, - track_flags_t flags, + track_flags_t *flags, pid_t tid, // -1 means unused, otherwise must be valid non-0 int *sessionId, status_t *status) = 0; @@ -124,7 +132,9 @@ public: virtual String8 getParameters(audio_io_handle_t ioHandle, const String8& keys) const = 0; - // register a current process for audio output change notifications + // Register an object to receive audio input/output change and track notifications. + // For a given calling pid, AudioFlinger disregards any registrations after the first. + // Thus the IAudioFlingerClient must be a singleton per process. virtual void registerClient(const sp<IAudioFlingerClient>& client) = 0; // retrieve the audio recording buffer size @@ -137,7 +147,8 @@ public: audio_format_t *pFormat, audio_channel_mask_t *pChannelMask, uint32_t *pLatencyMs, - audio_output_flags_t flags) = 0; + audio_output_flags_t flags, + const audio_offload_info_t *offloadInfo = NULL) = 0; virtual audio_io_handle_t openDuplicateOutput(audio_io_handle_t output1, audio_io_handle_t output2) = 0; virtual status_t closeOutput(audio_io_handle_t output) = 0; @@ -193,6 +204,10 @@ public: virtual uint32_t getPrimaryOutputSamplingRate() = 0; virtual size_t getPrimaryOutputFrameCount() = 0; + // Intended for AudioService to inform AudioFlinger of device's low RAM attribute, + // and should be called at most once. For a definition of what "low RAM" means, see + // android.app.ActivityManager.isLowRamDevice(). + virtual status_t setLowRamDevice(bool isLowRamDevice) = 0; }; |