Update comments
We no longer put the filename at start of file. Change-Id: Ic435b159a23105681e3d4a6cb1ac097bc853302e
This commit is contained in:
@@ -220,7 +220,7 @@ android_media_AudioRecord_setup(JNIEnv *env, jobject thiz, jobject weak_this,
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ALOGE("Error creating AudioRecord: Error retrieving session id pointer");
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goto native_init_failure;
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}
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// read the audio session ID back from AudioTrack in case a new session was created during set()
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// read the audio session ID back from AudioRecord in case a new session was created during set()
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nSession[0] = lpRecorder->getSessionId();
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env->ReleasePrimitiveArrayCritical(jSession, nSession, 0);
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nSession = NULL;
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@@ -1,4 +1,4 @@
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/* //device/libs/android_runtime/android_media_AudioSystem.cpp
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/*
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**
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** Copyright 2006, The Android Open Source Project
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**
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@@ -1,4 +1,4 @@
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/* //device/libs/android_runtime/android_media_AudioSystem.cpp
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/*
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**
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** Copyright 2008, The Android Open Source Project
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**
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@@ -131,7 +131,7 @@ public:
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NUM_CONFIG_EVENTS
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};
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// audio output descritor used to cache output configurations in client process to avoid frequent calls
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// audio output descriptor used to cache output configurations in client process to avoid frequent calls
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// through IAudioFlinger
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class OutputDescriptor {
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public:
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@@ -58,8 +58,8 @@ public:
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EVENT_BUFFER_END = 5 // Playback head is at the end of the buffer.
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};
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/* Create Buffer on the stack and pass it to obtainBuffer()
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* and releaseBuffer().
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/* Client should declare Buffer on the stack and pass address to obtainBuffer()
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* and releaseBuffer(). See also callback_t for EVENT_MORE_DATA.
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*/
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class Buffer
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@@ -68,12 +68,16 @@ public:
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enum {
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MUTE = 0x00000001
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};
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uint32_t flags;
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uint32_t flags; // 0 or MUTE
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audio_format_t format; // but AUDIO_FORMAT_PCM_8_BIT -> AUDIO_FORMAT_PCM_16_BIT
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// accessed directly by WebKit ANP callback
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int channelCount; // will be removed in the future, do not use
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size_t frameCount;
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size_t size;
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size_t frameCount; // number of sample frames corresponding to size;
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// on input it is the number of frames desired,
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// on output is the number of frames actually filled
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size_t size; // input/output in byte units
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union {
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void* raw;
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short* i16; // signed 16-bit
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@@ -84,15 +88,15 @@ public:
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/* As a convenience, if a callback is supplied, a handler thread
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* is automatically created with the appropriate priority. This thread
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* invokes the callback when a new buffer becomes available or an underrun condition occurs.
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* invokes the callback when a new buffer becomes available or various conditions occur.
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* Parameters:
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*
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* event: type of event notified (see enum AudioTrack::event_type).
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* user: Pointer to context for use by the callback receiver.
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* info: Pointer to optional parameter according to event type:
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* - EVENT_MORE_DATA: pointer to AudioTrack::Buffer struct. The callback must not write
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* more bytes than indicated by 'size' field and update 'size' if less bytes are
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* written.
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* more bytes than indicated by 'size' field and update 'size' if fewer bytes are
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* written.
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* - EVENT_UNDERRUN: unused.
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* - EVENT_LOOP_END: pointer to an int indicating the number of loops remaining.
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* - EVENT_MARKER: pointer to an uint32_t containing the marker position in frames.
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@@ -225,7 +229,7 @@ public:
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*/
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uint32_t latency() const;
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/* getters, see constructor */
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/* getters, see constructors and set() */
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audio_stream_type_t streamType() const;
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audio_format_t format() const;
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@@ -401,13 +405,19 @@ public:
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status_t attachAuxEffect(int effectId);
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/* Obtains a buffer of "frameCount" frames. The buffer must be
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* filled entirely. If the track is stopped, obtainBuffer() returns
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* filled entirely, and then released with releaseBuffer().
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* If the track is stopped, obtainBuffer() returns
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* STOPPED instead of NO_ERROR as long as there are buffers available,
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* at which point NO_MORE_BUFFERS is returned.
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* Buffers will be returned until the pool (buffercount())
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* is exhausted, at which point obtainBuffer() will either block
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* or return WOULD_BLOCK depending on the value of the "blocking"
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* parameter.
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*
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* Interpretation of waitCount:
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* +n limits wait time to n * WAIT_PERIOD_MS,
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* -1 causes an (almost) infinite wait time,
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* 0 non-blocking.
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*/
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enum {
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@@ -416,12 +426,19 @@ public:
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};
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status_t obtainBuffer(Buffer* audioBuffer, int32_t waitCount);
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/* Release a filled buffer of "frameCount" frames for AudioFlinger to process. */
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void releaseBuffer(Buffer* audioBuffer);
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/* As a convenience we provide a write() interface to the audio buffer.
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* This is implemented on top of lockBuffer/unlockBuffer. For best
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* performance use callbacks. Return actual number of bytes written.
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*
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* This is implemented on top of obtainBuffer/releaseBuffer. For best
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* performance use callbacks. Returns actual number of bytes written >= 0,
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* or one of the following negative status codes:
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* INVALID_OPERATION AudioTrack is configured for shared buffer mode
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* BAD_VALUE size is invalid
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* STOPPED AudioTrack was stopped during the write
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* NO_MORE_BUFFERS when obtainBuffer() returns same
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* or any other error code returned by IAudioTrack::start() or restoreTrack_l().
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*/
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ssize_t write(const void* buffer, size_t size);
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@@ -448,6 +465,7 @@ private:
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AudioTrack& mReceiver;
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};
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// body of AudioTrackThread::threadLoop()
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bool processAudioBuffer(const sp<AudioTrackThread>& thread);
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status_t createTrack_l(audio_stream_type_t streamType,
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uint32_t sampleRate,
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@@ -484,7 +502,7 @@ private:
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bool mActive; // protected by mLock
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callback_t mCbf;
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callback_t mCbf; // callback handler for events, or NULL
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void* mUserData;
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uint32_t mNotificationFramesReq; // requested number of frames between each notification callback
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uint32_t mNotificationFramesAct; // actual number of frames between each notification callback
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@@ -87,7 +87,7 @@ int EffectQueryEffect(uint32_t index, effect_descriptor_t *pDescriptor);
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// Description: Creates an effect engine of the specified type and returns an
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// effect control interface on this engine. The function will allocate the
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// resources for an instance of the requested effect engine and return
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// a handler on the effect control interface.
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// a handle on the effect control interface.
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//
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// Input:
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// pEffectUuid: pointer to the effect uuid.
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@@ -115,17 +115,17 @@ int EffectCreate(const effect_uuid_t *pEffectUuid, int32_t sessionId, int32_t io
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//
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// Function: EffectRelease
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//
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// Description: Releases the effect engine whose handler is given as argument.
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// Description: Releases the effect engine whose handle is given as argument.
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// All resources allocated to this particular instance of the effect are
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// released.
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//
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// Input:
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// handle: handler on the effect interface to be released.
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// handle: handle on the effect interface to be released.
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//
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// Output:
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// returned value: 0 successful operation.
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// -ENODEV factory failed to initialize
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// -EINVAL invalid interface handler
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// -EINVAL invalid interface handle
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//
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////////////////////////////////////////////////////////////////////////////////
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int EffectRelease(effect_handle_t handle);
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@@ -46,12 +46,12 @@ public:
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/* Stop a track. If set, the callback will cease being called and
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* obtainBuffer will return an error. Buffers that are already released
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* will be processed, unless flush() is called.
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* will continue to be processed, unless/until flush() is called.
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*/
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virtual void stop() = 0;
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/* Flush a stopped track. All pending buffers are discarded.
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* This function has no effect if the track is not stopped.
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/* Flush a stopped or paused track. All pending/released buffers are discarded.
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* This function has no effect if the track is not stopped or paused.
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*/
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virtual void flush() = 0;
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@@ -62,7 +62,7 @@ public:
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/* Pause a track. If set, the callback will cease being called and
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* obtainBuffer will return an error. Buffers that are already released
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* will be processed, unless flush() is called.
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* will continue to be processed, unless/until flush() is called.
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*/
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virtual void pause() = 0;
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@@ -19,7 +19,7 @@
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namespace android {
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/*
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* Dump the memory adddress of the calling process to the given fd.
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* Dump the memory address of the calling process to the given fd.
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*/
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extern void dumpMemoryAddresses(int fd);
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@@ -62,16 +62,23 @@ struct audio_track_cblk_t
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// are in the same line of data cache.
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Mutex lock; // sizeof(int)
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Condition cv; // sizeof(int)
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// next 4 are offsets within "buffers"
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volatile uint32_t user;
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volatile uint32_t server;
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uint32_t userBase;
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uint32_t serverBase;
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// if there is a shared buffer, "buffers" is the value of pointer() for the shared
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// buffer, otherwise "buffers" points immediately after the control block
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void* buffers;
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uint32_t frameCount;
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// Cache line boundary
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uint32_t loopStart;
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uint32_t loopEnd;
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int loopCount;
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uint32_t loopEnd; // read-only for server, read/write for client
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int loopCount; // read/write for client
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// Channel volumes are fixed point U4.12, so 0x1000 means 1.0.
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// Left channel is in [0:15], right channel is in [16:31].
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@@ -82,29 +89,39 @@ private:
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public:
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uint32_t sampleRate;
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// NOTE: audio_track_cblk_t::frameSize is not equal to AudioTrack::frameSize() for
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// 8 bit PCM data: in this case, mCblk->frameSize is based on a sample size of
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// 16 bit because data is converted to 16 bit before being stored in buffer
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// read-only for client, server writes once at initialization and is then read-only
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uint8_t frameSize; // would normally be size_t, but 8 bits is plenty
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// never used
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uint8_t pad1;
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// used by client only
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uint16_t bufferTimeoutMs; // Maximum cumulated timeout before restarting audioflinger
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uint16_t waitTimeMs; // Cumulated wait time
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uint16_t waitTimeMs; // Cumulated wait time, used by client only
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private:
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// client write-only, server read-only
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uint16_t mSendLevel; // Fixed point U4.12 so 0x1000 means 1.0
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public:
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volatile int32_t flags;
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// Cache line boundary (32 bytes)
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// Since the control block is always located in shared memory, this constructor
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// is only used for placement new(). It is never used for regular new() or stack.
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audio_track_cblk_t();
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uint32_t stepUser(uint32_t frameCount);
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bool stepServer(uint32_t frameCount);
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uint32_t stepUser(uint32_t frameCount); // called by client only, where
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// client includes regular AudioTrack and AudioFlinger::PlaybackThread::OutputTrack
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bool stepServer(uint32_t frameCount); // called by server only
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void* buffer(uint32_t offset) const;
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uint32_t framesAvailable();
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uint32_t framesAvailable_l();
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uint32_t framesReady();
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uint32_t framesReady(); // called by server only
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bool tryLock();
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// No barriers on the following operations, so the ordering of loads/stores
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@@ -66,7 +66,7 @@ public:
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ssize_t indexOfKey(const KEY& key) const;
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/*!
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* modifing the array
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* modifying the array
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*/
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VALUE& editValueFor(const KEY& key);
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@@ -623,7 +623,7 @@ void SoundChannel::play(const sp<Sample>& sample, int nextChannelID, float leftV
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newTrack->setVolume(leftVolume, rightVolume);
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newTrack->setLoop(0, frameCount, loop);
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// From now on, AudioTrack callbacks recevieved with previous toggle value will be ignored.
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// From now on, AudioTrack callbacks received with previous toggle value will be ignored.
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mToggle = toggle;
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mAudioTrack = newTrack;
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mPos = 0;
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@@ -1,4 +1,4 @@
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/* frameworks/base/media/libmedia/AudioTrack.cpp
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/*
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**
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** Copyright 2007, The Android Open Source Project
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**
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@@ -792,7 +792,7 @@ status_t AudioTrack::createTrack_l(
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}
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}
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} else {
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// Ensure that buffer alignment matches channelcount
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// Ensure that buffer alignment matches channelCount
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int channelCount = popcount(channelMask);
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if (((uint32_t)sharedBuffer->pointer() & (channelCount | 1)) != 0) {
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ALOGE("Invalid buffer alignement: address %p, channelCount %d", sharedBuffer->pointer(), channelCount);
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@@ -979,7 +979,8 @@ ssize_t AudioTrack::write(const void* buffer, size_t userSize)
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if (mSharedBuffer != 0) return INVALID_OPERATION;
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if (ssize_t(userSize) < 0) {
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// sanity-check. user is most-likely passing an error code.
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// Sanity-check: user is most-likely passing an error code, and it would
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// make the return value ambiguous (actualSize vs error).
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ALOGE("AudioTrack::write(buffer=%p, size=%u (%d)",
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buffer, userSize, userSize);
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return BAD_VALUE;
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@@ -1002,8 +1003,6 @@ ssize_t AudioTrack::write(const void* buffer, size_t userSize)
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do {
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audioBuffer.frameCount = userSize/frameSz;
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// Calling obtainBuffer() with a negative wait count causes
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// an (almost) infinite wait time.
|
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status_t err = obtainBuffer(&audioBuffer, -1);
|
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if (err < 0) {
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// out of buffers, return #bytes written
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@@ -1093,6 +1092,9 @@ bool AudioTrack::processAudioBuffer(const sp<AudioTrackThread>& thread)
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frames = mRemainingFrames;
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}
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// See description of waitCount parameter at declaration of obtainBuffer().
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// The logic below prevents us from being stuck below at obtainBuffer()
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// not being able to handle timed events (position, markers, loops).
|
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int32_t waitCount = -1;
|
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if (mUpdatePeriod || (!mMarkerReached && mMarkerPosition) || mLoopCount) {
|
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waitCount = 1;
|
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@@ -1102,9 +1104,6 @@ bool AudioTrack::processAudioBuffer(const sp<AudioTrackThread>& thread)
|
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audioBuffer.frameCount = frames;
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// Calling obtainBuffer() with a wait count of 1
|
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// limits wait time to WAIT_PERIOD_MS. This prevents from being
|
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// stuck here not being able to handle timed events (position, markers, loops).
|
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status_t err = obtainBuffer(&audioBuffer, waitCount);
|
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if (err < NO_ERROR) {
|
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if (err != TIMED_OUT) {
|
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|
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@@ -1,4 +1,4 @@
|
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/* //device/extlibs/pv/android/IAudioTrack.cpp
|
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/*
|
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**
|
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** Copyright 2007, The Android Open Source Project
|
||||
**
|
||||
|
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@@ -791,7 +791,7 @@ const unsigned char /*tone_type*/ ToneGenerator::sToneMappingTable[NUM_REGIONS-1
|
||||
// generators, instantiates output audio track.
|
||||
//
|
||||
// Input:
|
||||
// streamType: Type of stream used for tone playback (enum AudioTrack::stream_type)
|
||||
// streamType: Type of stream used for tone playback
|
||||
// volume: volume applied to tone (0.0 to 1.0)
|
||||
//
|
||||
// Output:
|
||||
|
||||
@@ -1,4 +1,4 @@
|
||||
/* mediaplayer.cpp
|
||||
/*
|
||||
**
|
||||
** Copyright 2006, The Android Open Source Project
|
||||
**
|
||||
|
||||
@@ -1,4 +1,4 @@
|
||||
/* //device/include/server/AudioFlinger/AudioFlinger.cpp
|
||||
/*
|
||||
**
|
||||
** Copyright 2007, The Android Open Source Project
|
||||
**
|
||||
@@ -621,6 +621,7 @@ status_t AudioFlinger::setMasterMute(bool muted)
|
||||
}
|
||||
|
||||
Mutex::Autolock _l(mLock);
|
||||
// This is an optimization, so PlaybackThread doesn't have to look at the one from AudioFlinger
|
||||
mMasterMute = muted;
|
||||
for (uint32_t i = 0; i < mPlaybackThreads.size(); i++)
|
||||
mPlaybackThreads.valueAt(i)->setMasterMute(muted);
|
||||
@@ -3121,6 +3122,7 @@ bool AudioFlinger::DuplicatingThread::threadLoop()
|
||||
|
||||
void AudioFlinger::DuplicatingThread::addOutputTrack(MixerThread *thread)
|
||||
{
|
||||
// FIXME explain this formula
|
||||
int frameCount = (3 * mFrameCount * mSampleRate) / thread->sampleRate();
|
||||
OutputTrack *outputTrack = new OutputTrack((ThreadBase *)thread,
|
||||
this,
|
||||
@@ -3392,7 +3394,7 @@ void AudioFlinger::PlaybackThread::Track::destroy()
|
||||
{
|
||||
// NOTE: destroyTrack_l() can remove a strong reference to this Track
|
||||
// by removing it from mTracks vector, so there is a risk that this Tracks's
|
||||
// desctructor is called. As the destructor needs to lock mLock,
|
||||
// destructor is called. As the destructor needs to lock mLock,
|
||||
// we must acquire a strong reference on this Track before locking mLock
|
||||
// here so that the destructor is called only when exiting this function.
|
||||
// On the other hand, as long as Track::destroy() is only called by
|
||||
@@ -3998,6 +4000,7 @@ void AudioFlinger::PlaybackThread::OutputTrack::clearBufferQueue()
|
||||
AudioFlinger::Client::Client(const sp<AudioFlinger>& audioFlinger, pid_t pid)
|
||||
: RefBase(),
|
||||
mAudioFlinger(audioFlinger),
|
||||
// FIXME should be a "k" constant not hard-coded, in .h or ro. property, see 4 lines below
|
||||
mMemoryDealer(new MemoryDealer(1024*1024, "AudioFlinger::Client")),
|
||||
mPid(pid)
|
||||
{
|
||||
@@ -4659,7 +4662,7 @@ bool AudioFlinger::RecordThread::checkForNewParameters_l()
|
||||
}
|
||||
if (param.getInt(String8(AudioParameter::keyFrameCount), value) == NO_ERROR) {
|
||||
// do not accept frame count changes if tracks are open as the track buffer
|
||||
// size depends on frame count and correct behavior would not be garantied
|
||||
// size depends on frame count and correct behavior would not be guaranteed
|
||||
// if frame count is changed after track creation
|
||||
if (mActiveTrack != 0) {
|
||||
status = INVALID_OPERATION;
|
||||
@@ -6107,7 +6110,6 @@ status_t AudioFlinger::EffectModule::addHandle(const sp<EffectHandle>& handle)
|
||||
status_t status;
|
||||
|
||||
Mutex::Autolock _l(mLock);
|
||||
// First handle in mHandles has highest priority and controls the effect module
|
||||
int priority = handle->priority();
|
||||
size_t size = mHandles.size();
|
||||
sp<EffectHandle> h;
|
||||
|
||||
@@ -1,4 +1,4 @@
|
||||
/* //device/include/server/AudioFlinger/AudioFlinger.h
|
||||
/*
|
||||
**
|
||||
** Copyright 2007, The Android Open Source Project
|
||||
**
|
||||
@@ -290,6 +290,8 @@ private:
|
||||
enum track_state {
|
||||
IDLE,
|
||||
TERMINATED,
|
||||
// These are order-sensitive; do not change order without reviewing the impact.
|
||||
// In particular there are assumptions about > STOPPED.
|
||||
STOPPED,
|
||||
RESUMING,
|
||||
ACTIVE,
|
||||
@@ -760,6 +762,9 @@ private:
|
||||
int mSuspended;
|
||||
int mBytesWritten;
|
||||
private:
|
||||
// mMasterMute is in both PlaybackThread and in AudioFlinger. When a
|
||||
// PlaybackThread needs to find out if master-muted, it checks it's local
|
||||
// copy rather than the one in AudioFlinger. This optimization saves a lock.
|
||||
bool mMasterMute;
|
||||
protected:
|
||||
SortedVector< wp<Track> > mActiveTracks;
|
||||
@@ -853,6 +858,8 @@ private:
|
||||
private:
|
||||
void applyVolume(uint16_t leftVol, uint16_t rightVol, bool ramp);
|
||||
|
||||
// volumes last sent to audio HAL with stream->set_volume()
|
||||
// FIXME use standard representation and names
|
||||
float mLeftVolFloat;
|
||||
float mRightVolFloat;
|
||||
uint16_t mLeftVolShort;
|
||||
@@ -900,6 +907,7 @@ private:
|
||||
|
||||
friend class AudioBuffer;
|
||||
|
||||
// server side of the client's IAudioTrack
|
||||
class TrackHandle : public android::BnAudioTrack {
|
||||
public:
|
||||
TrackHandle(const sp<PlaybackThread::Track>& track);
|
||||
@@ -1024,6 +1032,7 @@ private:
|
||||
ssize_t mBytesRead;
|
||||
};
|
||||
|
||||
// server side of the client's IAudioRecord
|
||||
class RecordHandle : public android::BnAudioRecord {
|
||||
public:
|
||||
RecordHandle(const sp<RecordThread::RecordTrack>& recordTrack);
|
||||
@@ -1152,6 +1161,7 @@ mutable Mutex mLock; // mutex for process, commands and handl
|
||||
status_t mStatus; // initialization status
|
||||
effect_state mState; // current activation state
|
||||
Vector< wp<EffectHandle> > mHandles; // list of client handles
|
||||
// First handle in mHandles has highest priority and controls the effect module
|
||||
uint32_t mMaxDisableWaitCnt; // maximum grace period before forcing an effect off after
|
||||
// sending disable command.
|
||||
uint32_t mDisableWaitCnt; // current process() calls count during disable period.
|
||||
@@ -1377,6 +1387,7 @@ mutable Mutex mLock; // mutex for process, commands and handl
|
||||
hwDev(dev), stream(in) {}
|
||||
};
|
||||
|
||||
// for mAudioSessionRefs only
|
||||
struct AudioSessionRef {
|
||||
// FIXME rename parameter names when fields get "m" prefix
|
||||
AudioSessionRef(int sessionid_, pid_t pid_) :
|
||||
@@ -1432,10 +1443,11 @@ mutable Mutex mLock; // mutex for process, commands and handl
|
||||
DefaultKeyedVector< audio_io_handle_t, sp<RecordThread> > mRecordThreads;
|
||||
|
||||
DefaultKeyedVector< pid_t, sp<NotificationClient> > mNotificationClients;
|
||||
volatile int32_t mNextUniqueId;
|
||||
volatile int32_t mNextUniqueId; // updated by android_atomic_inc
|
||||
audio_mode_t mMode;
|
||||
bool mBtNrecIsOff;
|
||||
|
||||
// protected by mLock
|
||||
Vector<AudioSessionRef*> mAudioSessionRefs;
|
||||
|
||||
float masterVolume_l() const { return mMasterVolume; }
|
||||
|
||||
@@ -1,4 +1,4 @@
|
||||
/* //device/include/server/AudioFlinger/AudioMixer.cpp
|
||||
/*
|
||||
**
|
||||
** Copyright 2007, The Android Open Source Project
|
||||
**
|
||||
@@ -961,7 +961,12 @@ void AudioMixer::process__genericResampling(state_t* state)
|
||||
// one track, 16 bits stereo without resampling is the most common case
|
||||
void AudioMixer::process__OneTrack16BitsStereoNoResampling(state_t* state)
|
||||
{
|
||||
// This method is only called when state->enabledTracks has exactly
|
||||
// one bit set. The asserts below would verify this, but are commented out
|
||||
// since the whole point of this method is to optimize performance.
|
||||
//assert(0 != state->enabledTracks);
|
||||
const int i = 31 - __builtin_clz(state->enabledTracks);
|
||||
//assert((1 << i) == state->enabledTracks);
|
||||
const track_t& t = state->tracks[i];
|
||||
|
||||
AudioBufferProvider::Buffer& b(t.buffer);
|
||||
|
||||
@@ -1,4 +1,4 @@
|
||||
/* //device/include/server/AudioFlinger/AudioMixer.h
|
||||
/*
|
||||
**
|
||||
** Copyright 2007, The Android Open Source Project
|
||||
**
|
||||
|
||||
Reference in New Issue
Block a user