/*
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* Copyright (C) 2010 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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/** \file OutputMixExt.h OutputMixExt interface */
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#ifdef __cplusplus
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extern "C" {
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#endif
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extern const SLInterfaceID SL_IID_OUTPUTMIXEXT;
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#ifdef __cplusplus
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}
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#endif
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typedef const struct SLOutputMixExtItf_ * const * SLOutputMixExtItf;
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/** \brief v-table for IOutputMixExt */
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struct SLOutputMixExtItf_ {
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void (*FillBuffer)(SLOutputMixExtItf self, void *pBuffer, SLuint32 size);
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};
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/** \brief Track describes each PCM input source to OutputMix */
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typedef struct {
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struct BufferQueue_interface *mBufferQueue;
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CAudioPlayer *mAudioPlayer; ///< Mixer examines this track if non-NULL
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const void *mReader; ///< Pointer to next frame in BufferHeader.mBuffer
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SLuint32 mAvail; ///< Number of available bytes in the current buffer
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float mGains[STEREO_CHANNELS]; ///< Copied from CAudioPlayer::mGains
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SLuint32 mFramesMixed; ///< Number of sample frames mixed from track; reset periodically
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} Track;
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extern SLresult IOutputMixExt_checkAudioPlayerSourceSink(CAudioPlayer *thiz);
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extern void audioPlayerGainUpdate(CAudioPlayer *thiz);
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extern void IOutputMixExt_FillBuffer(SLOutputMixExtItf self, void *pBuffer, SLuint32 size);
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