| /* |
| * Copyright 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 LEGACY_AUDIO_STREAM_LEGACY_H |
| #define LEGACY_AUDIO_STREAM_LEGACY_H |
| |
| #include <media/AudioTimestamp.h> |
| #include <media/AudioSystem.h> |
| |
| #include <aaudio/AAudio.h> |
| |
| #include "AudioStream.h" |
| #include "AAudioLegacy.h" |
| #include "utility/AAudioUtilities.h" |
| #include "utility/FixedBlockAdapter.h" |
| |
| namespace aaudio { |
| |
| |
| typedef void (*aaudio_legacy_callback_t)(int event, void* user, void *info); |
| |
| enum { |
| /** |
| * Request that the callback function should fill the data buffer of an output stream, |
| * or process the data of an input stream. |
| * The address parameter passed to the callback function will point to a data buffer. |
| * For an input stream, the data is read-only. |
| * The value1 parameter will be the number of frames. |
| * The value2 parameter is reserved and will be set to zero. |
| * The callback should return AAUDIO_CALLBACK_RESULT_CONTINUE or AAUDIO_CALLBACK_RESULT_STOP. |
| */ |
| AAUDIO_CALLBACK_OPERATION_PROCESS_DATA, |
| |
| /** |
| * Inform the callback function that the stream was disconnected. |
| * The address parameter passed to the callback function will be NULL. |
| * The value1 will be an error code or AAUDIO_OK. |
| * The value2 parameter is reserved and will be set to zero. |
| * The callback return value will be ignored. |
| */ |
| AAUDIO_CALLBACK_OPERATION_DISCONNECTED, |
| }; |
| typedef int32_t aaudio_callback_operation_t; |
| |
| |
| class AudioStreamLegacy : public AudioStream, public FixedBlockProcessor { |
| public: |
| AudioStreamLegacy(); |
| |
| virtual ~AudioStreamLegacy(); |
| |
| aaudio_legacy_callback_t getLegacyCallback(); |
| |
| int32_t callDataCallbackFrames(uint8_t *buffer, int32_t numFrames); |
| |
| // This is public so it can be called from the C callback function. |
| // This is called from the AudioTrack/AudioRecord client. |
| virtual void processCallback(int event, void *info) = 0; |
| |
| void processCallbackCommon(aaudio_callback_operation_t opcode, void *info); |
| |
| // Implement FixedBlockProcessor |
| int32_t onProcessFixedBlock(uint8_t *buffer, int32_t numBytes) override; |
| |
| virtual int64_t incrementClientFrameCounter(int32_t frames) = 0; |
| |
| virtual int64_t getFramesWritten() override { |
| return mFramesWritten.get(); |
| } |
| |
| virtual int64_t getFramesRead() override { |
| return mFramesRead.get(); |
| } |
| |
| protected: |
| |
| class StreamDeviceCallback : public android::AudioSystem::AudioDeviceCallback |
| { |
| public: |
| |
| StreamDeviceCallback(AudioStreamLegacy *parent) : mParent(parent) {} |
| virtual ~StreamDeviceCallback() {} |
| |
| virtual void onAudioDeviceUpdate(audio_io_handle_t audioIo __unused, |
| audio_port_handle_t deviceId) { |
| if (mParent != nullptr) { |
| mParent->onAudioDeviceUpdate(deviceId); |
| } |
| } |
| |
| AudioStreamLegacy *mParent; |
| }; |
| |
| aaudio_result_t getBestTimestamp(clockid_t clockId, |
| int64_t *framePosition, |
| int64_t *timeNanoseconds, |
| android::ExtendedTimestamp *extendedTimestamp); |
| |
| void onAudioDeviceUpdate(audio_port_handle_t deviceId); |
| |
| /* |
| * Check to see whether a callback thread has requested a disconnected. |
| * @param errorCallbackEnabled set true to call errorCallback on disconnect |
| * @return AAUDIO_OK or AAUDIO_ERROR_DISCONNECTED |
| */ |
| aaudio_result_t checkForDisconnectRequest(bool errorCallbackEnabled); |
| |
| void forceDisconnect(bool errorCallbackEnabled = true); |
| |
| int64_t incrementFramesWritten(int32_t frames) { |
| return mFramesWritten.increment(frames); |
| } |
| |
| int64_t incrementFramesRead(int32_t frames) { |
| return mFramesRead.increment(frames); |
| } |
| |
| MonotonicCounter mFramesWritten; |
| MonotonicCounter mFramesRead; |
| MonotonicCounter mTimestampPosition; |
| |
| FixedBlockAdapter *mBlockAdapter = nullptr; |
| aaudio_wrapping_frames_t mPositionWhenStarting = 0; |
| int32_t mCallbackBufferSize = 0; |
| const android::sp<StreamDeviceCallback> mDeviceCallback; |
| |
| AtomicRequestor mRequestDisconnect; |
| }; |
| |
| } /* namespace aaudio */ |
| |
| #endif //LEGACY_AUDIO_STREAM_LEGACY_H |