72 lines
2.3 KiB
C++
72 lines
2.3 KiB
C++
/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_AUDIO_IO_DESCRIPTOR_H
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#define ANDROID_AUDIO_IO_DESCRIPTOR_H
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namespace android {
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enum audio_io_config_event {
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AUDIO_OUTPUT_OPENED,
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AUDIO_OUTPUT_CLOSED,
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AUDIO_OUTPUT_CONFIG_CHANGED,
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AUDIO_INPUT_OPENED,
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AUDIO_INPUT_CLOSED,
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AUDIO_INPUT_CONFIG_CHANGED,
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};
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// audio input/output descriptor used to cache output configurations in client process to avoid
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// frequent calls through IAudioFlinger
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class AudioIoDescriptor : public RefBase {
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public:
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AudioIoDescriptor() :
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mIoHandle(AUDIO_IO_HANDLE_NONE),
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mSamplingRate(0), mFormat(AUDIO_FORMAT_DEFAULT), mChannelMask(AUDIO_CHANNEL_NONE),
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mFrameCount(0), mFrameCountHAL(0), mLatency(0)
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{
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memset(&mPatch, 0, sizeof(struct audio_patch));
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}
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virtual ~AudioIoDescriptor() {}
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audio_port_handle_t getDeviceId() {
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if (mPatch.num_sources != 0 && mPatch.num_sinks != 0) {
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if (mPatch.sources[0].type == AUDIO_PORT_TYPE_MIX) {
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// this is an output mix
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// FIXME: the API only returns the first device in case of multiple device selection
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return mPatch.sinks[0].id;
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} else {
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// this is an input mix
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return mPatch.sources[0].id;
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}
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}
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return AUDIO_PORT_HANDLE_NONE;
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}
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audio_io_handle_t mIoHandle;
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struct audio_patch mPatch;
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uint32_t mSamplingRate;
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audio_format_t mFormat;
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audio_channel_mask_t mChannelMask;
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size_t mFrameCount;
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size_t mFrameCountHAL;
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uint32_t mLatency; // only valid for output
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};
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}; // namespace android
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#endif /*ANDROID_AUDIO_IO_DESCRIPTOR_H*/
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