/*
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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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/* OutputMix implementation */
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#include "sles_allinclusive.h"
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static SLresult IOutputMix_GetDestinationOutputDeviceIDs(SLOutputMixItf self,
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SLint32 *pNumDevices, SLuint32 *pDeviceIDs)
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{
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SL_ENTER_INTERFACE
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if (NULL == pNumDevices) {
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result = SL_RESULT_PARAMETER_INVALID;
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} else {
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result = SL_RESULT_SUCCESS;
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// The application can set pDeviceIDs == NULL in order to find out number of devices.
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// Then the application can allocate a proper-sized device ID array and try again.
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if (NULL != pDeviceIDs) {
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if (1 > *pNumDevices) {
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result = SL_RESULT_BUFFER_INSUFFICIENT;
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} else {
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pDeviceIDs[0] = SL_DEFAULTDEVICEID_AUDIOOUTPUT;
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}
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}
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*pNumDevices = 1;
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}
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SL_LEAVE_INTERFACE
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}
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static SLresult IOutputMix_RegisterDeviceChangeCallback(SLOutputMixItf self,
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slMixDeviceChangeCallback callback, void *pContext)
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{
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SL_ENTER_INTERFACE
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IOutputMix *thiz = (IOutputMix *) self;
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interface_lock_exclusive(thiz);
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thiz->mCallback = callback;
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thiz->mContext = pContext;
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interface_unlock_exclusive(thiz);
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result = SL_RESULT_SUCCESS;
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SL_LEAVE_INTERFACE
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}
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static SLresult IOutputMix_ReRoute(SLOutputMixItf self, SLint32 numOutputDevices,
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SLuint32 *pOutputDeviceIDs)
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{
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SL_ENTER_INTERFACE
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if ((1 != numOutputDevices) || (NULL == pOutputDeviceIDs)) {
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result = SL_RESULT_PARAMETER_INVALID;
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} else {
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switch (pOutputDeviceIDs[0]) {
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case SL_DEFAULTDEVICEID_AUDIOOUTPUT:
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case DEVICE_ID_HEADSET:
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result = SL_RESULT_SUCCESS;
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break;
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default:
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result = SL_RESULT_PARAMETER_INVALID;
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break;
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}
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}
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SL_LEAVE_INTERFACE
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}
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static const struct SLOutputMixItf_ IOutputMix_Itf = {
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IOutputMix_GetDestinationOutputDeviceIDs,
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IOutputMix_RegisterDeviceChangeCallback,
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IOutputMix_ReRoute
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};
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void IOutputMix_init(void *self)
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{
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IOutputMix *thiz = (IOutputMix *) self;
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thiz->mItf = &IOutputMix_Itf;
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thiz->mCallback = NULL;
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thiz->mContext = NULL;
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}
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