Update NBAIO to use the new audio HAL abstraction layer
Moved the HAL access abstraction layer to a separate library so it
can be used both by audioflinger and libnbaio.
Bug: 30222631
Test: manual with Loopback app, Hangouts, YouTube
Change-Id: Id622c2f1aa8f55a775d34f369a596c2c4d29d5be
diff --git a/include/media/audiohal/DeviceHalInterface.h b/include/media/audiohal/DeviceHalInterface.h
new file mode 100644
index 0000000..b5767ef
--- /dev/null
+++ b/include/media/audiohal/DeviceHalInterface.h
@@ -0,0 +1,120 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HARDWARE_DEVICE_HAL_INTERFACE_H
+#define ANDROID_HARDWARE_DEVICE_HAL_INTERFACE_H
+
+#include <hardware/audio.h>
+#include <utils/Errors.h>
+#include <utils/RefBase.h>
+#include <utils/String8.h>
+
+namespace android {
+
+class StreamInHalInterface;
+class StreamOutHalInterface;
+
+class DeviceHalInterface : public RefBase
+{
+ public:
+ // Sets the value of 'devices' to a bitmask of 1 or more values of audio_devices_t.
+ virtual status_t getSupportedDevices(uint32_t *devices) = 0;
+
+ // Get the hardware module version.
+ virtual status_t getVersion(uint32_t *version) = 0;
+
+ // Check to see if the audio hardware interface has been initialized.
+ virtual status_t initCheck() = 0;
+
+ // Set the audio volume of a voice call. Range is between 0.0 and 1.0.
+ virtual status_t setVoiceVolume(float volume) = 0;
+
+ // Set the audio volume for all audio activities other than voice call.
+ virtual status_t setMasterVolume(float volume) = 0;
+
+ // Get the current master volume value for the HAL.
+ virtual status_t getMasterVolume(float *volume) = 0;
+
+ // Called when the audio mode changes.
+ virtual status_t setMode(audio_mode_t mode) = 0;
+
+ // Muting control.
+ virtual status_t setMicMute(bool state) = 0;
+ virtual status_t getMicMute(bool *state) = 0;
+ virtual status_t setMasterMute(bool state) = 0;
+ virtual status_t getMasterMute(bool *state) = 0;
+
+ // Set global audio parameters.
+ virtual status_t setParameters(const String8& kvPairs) = 0;
+
+ // Get global audio parameters.
+ virtual status_t getParameters(const String8& keys, String8 *values) = 0;
+
+ // Returns audio input buffer size according to parameters passed.
+ virtual status_t getInputBufferSize(const struct audio_config *config,
+ size_t *size) = 0;
+
+ // Creates and opens the audio hardware output stream. The stream is closed
+ // by releasing all references to the returned object.
+ virtual status_t openOutputStream(
+ audio_io_handle_t handle,
+ audio_devices_t devices,
+ audio_output_flags_t flags,
+ struct audio_config *config,
+ const char *address,
+ sp<StreamOutHalInterface> *outStream) = 0;
+
+ // Creates and opens the audio hardware input stream. The stream is closed
+ // by releasing all references to the returned object.
+ virtual status_t openInputStream(
+ audio_io_handle_t handle,
+ audio_devices_t devices,
+ struct audio_config *config,
+ audio_input_flags_t flags,
+ const char *address,
+ audio_source_t source,
+ sp<StreamInHalInterface> *inStream) = 0;
+
+ // Creates an audio patch between several source and sink ports.
+ virtual status_t createAudioPatch(
+ unsigned int num_sources,
+ const struct audio_port_config *sources,
+ unsigned int num_sinks,
+ const struct audio_port_config *sinks,
+ audio_patch_handle_t *patch) = 0;
+
+ // Releases an audio patch.
+ virtual status_t releaseAudioPatch(audio_patch_handle_t patch) = 0;
+
+ // Fills the list of supported attributes for a given audio port.
+ virtual status_t getAudioPort(struct audio_port *port) = 0;
+
+ // Set audio port configuration.
+ virtual status_t setAudioPortConfig(const struct audio_port_config *config) = 0;
+
+ virtual status_t dump(int fd) = 0;
+
+ protected:
+ // Subclasses can not be constructed directly by clients.
+ DeviceHalInterface() {}
+
+ // The destructor automatically closes the device.
+ virtual ~DeviceHalInterface() {}
+};
+
+} // namespace android
+
+#endif // ANDROID_HARDWARE_DEVICE_HAL_INTERFACE_H
diff --git a/include/media/audiohal/DevicesFactoryHalInterface.h b/include/media/audiohal/DevicesFactoryHalInterface.h
new file mode 100644
index 0000000..823a0da
--- /dev/null
+++ b/include/media/audiohal/DevicesFactoryHalInterface.h
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HARDWARE_DEVICES_FACTORY_HAL_INTERFACE_H
+#define ANDROID_HARDWARE_DEVICES_FACTORY_HAL_INTERFACE_H
+
+#include <media/audiohal/DeviceHalInterface.h>
+#include <utils/Errors.h>
+#include <utils/RefBase.h>
+
+namespace android {
+
+class DevicesFactoryHalInterface : public RefBase
+{
+ public:
+ virtual ~DevicesFactoryHalInterface() {}
+
+ // Opens a device with the specified name. To close the device, it is
+ // necessary to release references to the returned object.
+ virtual status_t openDevice(const char *name, sp<DeviceHalInterface> *device) = 0;
+
+ static sp<DevicesFactoryHalInterface> create();
+
+ protected:
+ // Subclasses can not be constructed directly by clients.
+ DevicesFactoryHalInterface() {}
+};
+
+} // namespace android
+
+#endif // ANDROID_HARDWARE_DEVICES_FACTORY_HAL_INTERFACE_H
diff --git a/include/media/audiohal/EffectHalInterface.h b/include/media/audiohal/EffectHalInterface.h
new file mode 100644
index 0000000..4bde112
--- /dev/null
+++ b/include/media/audiohal/EffectHalInterface.h
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HARDWARE_EFFECT_HAL_INTERFACE_H
+#define ANDROID_HARDWARE_EFFECT_HAL_INTERFACE_H
+
+#include <hardware/audio_effect.h>
+#include <utils/Errors.h>
+#include <utils/RefBase.h>
+
+namespace android {
+
+class EffectHalInterface : public RefBase
+{
+ public:
+ // Effect process function. Takes input samples as specified
+ // in input buffer descriptor and output processed samples as specified
+ // in output buffer descriptor.
+ virtual status_t process(audio_buffer_t *inBuffer, audio_buffer_t *outBuffer) = 0;
+
+ // Process reverse stream function. This function is used to pass
+ // a reference stream to the effect engine.
+ virtual status_t processReverse(audio_buffer_t *inBuffer, audio_buffer_t *outBuffer) = 0;
+
+ // Send a command and receive a response to/from effect engine.
+ virtual status_t command(uint32_t cmdCode, uint32_t cmdSize, void *pCmdData,
+ uint32_t *replySize, void *pReplyData) = 0;
+
+ // Returns the effect descriptor.
+ virtual status_t getDescriptor(effect_descriptor_t *pDescriptor) = 0;
+
+ protected:
+ // Subclasses can not be constructed directly by clients.
+ EffectHalInterface() {}
+
+ // The destructor automatically releases the effect.
+ virtual ~EffectHalInterface() {}
+};
+
+} // namespace android
+
+#endif // ANDROID_HARDWARE_EFFECT_HAL_INTERFACE_H
diff --git a/include/media/audiohal/EffectsFactoryHalInterface.h b/include/media/audiohal/EffectsFactoryHalInterface.h
new file mode 100644
index 0000000..1588dab
--- /dev/null
+++ b/include/media/audiohal/EffectsFactoryHalInterface.h
@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HARDWARE_EFFECTS_FACTORY_HAL_INTERFACE_H
+#define ANDROID_HARDWARE_EFFECTS_FACTORY_HAL_INTERFACE_H
+
+#include <hardware/audio_effect.h>
+#include <media/audiohal/EffectHalInterface.h>
+#include <utils/Errors.h>
+#include <utils/RefBase.h>
+
+namespace android {
+
+class EffectsFactoryHalInterface : public RefBase
+{
+ public:
+ // Returns the number of different effects in all loaded libraries.
+ virtual status_t queryNumberEffects(uint32_t *pNumEffects) = 0;
+
+ // Returns a descriptor of the next available effect.
+ virtual status_t getDescriptor(uint32_t index,
+ effect_descriptor_t *pDescriptor) = 0;
+
+ virtual status_t getDescriptor(const effect_uuid_t *pEffectUuid,
+ effect_descriptor_t *pDescriptor) = 0;
+
+ // Creates an effect engine of the specified type.
+ // To release the effect engine, it is necessary to release references
+ // to the returned effect object.
+ virtual status_t createEffect(const effect_uuid_t *pEffectUuid,
+ int32_t sessionId, int32_t ioId,
+ sp<EffectHalInterface> *effect) = 0;
+
+ virtual status_t dumpEffects(int fd) = 0;
+
+ static sp<EffectsFactoryHalInterface> create();
+
+ // Helper function to compare effect uuid to EFFECT_UUID_NULL.
+ static bool isNullUuid(const effect_uuid_t *pEffectUuid);
+
+ protected:
+ // Subclasses can not be constructed directly by clients.
+ EffectsFactoryHalInterface() {}
+
+ virtual ~EffectsFactoryHalInterface() {}
+};
+
+} // namespace android
+
+#endif // ANDROID_HARDWARE_EFFECTS_FACTORY_HAL_INTERFACE_H
diff --git a/include/media/audiohal/StreamHalInterface.h b/include/media/audiohal/StreamHalInterface.h
new file mode 100644
index 0000000..5a7b4b6
--- /dev/null
+++ b/include/media/audiohal/StreamHalInterface.h
@@ -0,0 +1,153 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HARDWARE_STREAM_HAL_INTERFACE_H
+#define ANDROID_HARDWARE_STREAM_HAL_INTERFACE_H
+
+#include <hardware/audio.h>
+#include <media/audiohal/EffectHalInterface.h>
+#include <utils/Errors.h>
+#include <utils/RefBase.h>
+#include <utils/String8.h>
+
+namespace android {
+
+class StreamHalInterface : public virtual RefBase
+{
+ public:
+ // Return the sampling rate in Hz - eg. 44100.
+ virtual status_t getSampleRate(uint32_t *rate) = 0;
+
+ // Return size of input/output buffer in bytes for this stream - eg. 4800.
+ virtual status_t getBufferSize(size_t *size) = 0;
+
+ // Return the channel mask.
+ virtual status_t getChannelMask(audio_channel_mask_t *mask) = 0;
+
+ // Return the audio format - e.g. AUDIO_FORMAT_PCM_16_BIT.
+ virtual status_t getFormat(audio_format_t *format) = 0;
+
+ // Convenience method.
+ virtual status_t getAudioProperties(
+ uint32_t *sampleRate, audio_channel_mask_t *mask, audio_format_t *format) = 0;
+
+ // Set audio stream parameters.
+ virtual status_t setParameters(const String8& kvPairs) = 0;
+
+ // Get audio stream parameters.
+ virtual status_t getParameters(const String8& keys, String8 *values) = 0;
+
+ // Return the frame size (number of bytes per sample) of a stream.
+ virtual status_t getFrameSize(size_t *size) = 0;
+
+ // Add or remove the effect on the stream.
+ virtual status_t addEffect(sp<EffectHalInterface> effect) = 0;
+ virtual status_t removeEffect(sp<EffectHalInterface> effect) = 0;
+
+ // Put the audio hardware input/output into standby mode.
+ virtual status_t standby() = 0;
+
+ virtual status_t dump(int fd) = 0;
+
+ protected:
+ // Subclasses can not be constructed directly by clients.
+ StreamHalInterface() {}
+
+ // The destructor automatically closes the stream.
+ virtual ~StreamHalInterface() {}
+};
+
+class StreamOutHalInterfaceCallback : public virtual RefBase {
+ public:
+ virtual void onWriteReady() {}
+ virtual void onDrainReady() {}
+ virtual void onError() {}
+
+ protected:
+ StreamOutHalInterfaceCallback() {}
+ virtual ~StreamOutHalInterfaceCallback() {}
+};
+
+class StreamOutHalInterface : public virtual StreamHalInterface {
+ public:
+ // Return the audio hardware driver estimated latency in milliseconds.
+ virtual status_t getLatency(uint32_t *latency) = 0;
+
+ // Use this method in situations where audio mixing is done in the hardware.
+ virtual status_t setVolume(float left, float right) = 0;
+
+ // Write audio buffer to driver.
+ virtual status_t write(const void *buffer, size_t bytes, size_t *written) = 0;
+
+ // Return the number of audio frames written by the audio dsp to DAC since
+ // the output has exited standby.
+ virtual status_t getRenderPosition(uint32_t *dspFrames) = 0;
+
+ // Get the local time at which the next write to the audio driver will be presented.
+ virtual status_t getNextWriteTimestamp(int64_t *timestamp) = 0;
+
+ // Set the callback for notifying completion of non-blocking write and drain.
+ // The callback must be owned by someone else. The output stream does not own it
+ // to avoid strong pointer loops.
+ virtual status_t setCallback(sp<StreamOutHalInterfaceCallback> callback) = 0;
+
+ // Returns whether pause and resume operations are supported.
+ virtual status_t supportsPauseAndResume(bool *supportsPause, bool *supportsResume) = 0;
+
+ // Notifies to the audio driver to resume playback following a pause.
+ virtual status_t pause() = 0;
+
+ // Notifies to the audio driver to resume playback following a pause.
+ virtual status_t resume() = 0;
+
+ // Returns whether drain operation is supported.
+ virtual status_t supportsDrain(bool *supportsDrain) = 0;
+
+ // Requests notification when data buffered by the driver/hardware has been played.
+ virtual status_t drain(audio_drain_type_t type) = 0;
+
+ // Notifies to the audio driver to flush the queued data.
+ virtual status_t flush() = 0;
+
+ // Return a recent count of the number of audio frames presented to an external observer.
+ virtual status_t getPresentationPosition(uint64_t *frames, struct timespec *timestamp) = 0;
+
+ protected:
+ virtual ~StreamOutHalInterface() {}
+};
+
+class StreamInHalInterface : public virtual StreamHalInterface {
+ public:
+ // Set the input gain for the audio driver.
+ virtual status_t setGain(float gain) = 0;
+
+ // Read audio buffer in from driver.
+ virtual status_t read(void *buffer, size_t bytes, size_t *read) = 0;
+
+ // Return the amount of input frames lost in the audio driver.
+ virtual status_t getInputFramesLost(uint32_t *framesLost) = 0;
+
+ // Return a recent count of the number of audio frames received and
+ // the clock time associated with that frame count.
+ virtual status_t getCapturePosition(int64_t *frames, int64_t *time) = 0;
+
+ protected:
+ virtual ~StreamInHalInterface() {}
+};
+
+} // namespace android
+
+#endif // ANDROID_HARDWARE_STREAM_HAL_INTERFACE_H
diff --git a/include/media/nbaio/AudioStreamInSource.h b/include/media/nbaio/AudioStreamInSource.h
index a6e7992..2efff4a 100644
--- a/include/media/nbaio/AudioStreamInSource.h
+++ b/include/media/nbaio/AudioStreamInSource.h
@@ -22,11 +22,13 @@
namespace android {
+class StreamInHalInterface;
+
// not multi-thread safe
class AudioStreamInSource : public NBAIO_Source {
public:
- AudioStreamInSource(audio_stream_in *stream);
+ AudioStreamInSource(sp<StreamInHalInterface> stream);
virtual ~AudioStreamInSource();
// NBAIO_Port interface
@@ -50,11 +52,11 @@
// NBAIO_Sink end
#if 0 // until necessary
- audio_stream_in *stream() const { return mStream; }
+ sp<StreamInHalInterface> stream() const { return mStream; }
#endif
private:
- audio_stream_in * const mStream;
+ sp<StreamInHalInterface> mStream;
size_t mStreamBufferSizeBytes; // as reported by get_buffer_size()
int64_t mFramesOverrun;
int64_t mOverruns;
diff --git a/include/media/nbaio/AudioStreamOutSink.h b/include/media/nbaio/AudioStreamOutSink.h
index e86b018..3c59da2 100644
--- a/include/media/nbaio/AudioStreamOutSink.h
+++ b/include/media/nbaio/AudioStreamOutSink.h
@@ -22,11 +22,13 @@
namespace android {
+class StreamOutHalInterface;
+
// not multi-thread safe
class AudioStreamOutSink : public NBAIO_Sink {
public:
- AudioStreamOutSink(audio_stream_out *stream);
+ AudioStreamOutSink(sp<StreamOutHalInterface> stream);
virtual ~AudioStreamOutSink();
// NBAIO_Port interface
@@ -52,11 +54,11 @@
// NBAIO_Sink end
#if 0 // until necessary
- audio_stream_out *stream() const { return mStream; }
+ sp<StreamOutHalInterface> stream() const { return mStream; }
#endif
private:
- audio_stream_out * const mStream;
+ sp<StreamOutHalInterface> mStream;
size_t mStreamBufferSizeBytes; // as reported by get_buffer_size()
};