52 lines
1.6 KiB
C
52 lines
1.6 KiB
C
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/*
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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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#ifndef ANDROID_EFFECTCBASESHARED_H
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#define ANDROID_EFFECTCBASESHARED_H
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#include <stdint.h>
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#include <sys/types.h>
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#include <utils/threads.h>
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namespace android {
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// ----------------------------------------------------------------------------
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// Size of buffer used to exchange parameters between application and mediaserver processes.
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#define EFFECT_PARAM_BUFFER_SIZE 1024
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// Shared memory area used to exchange parameters between application and mediaserver
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// process.
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struct effect_param_cblk_t
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{
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Mutex lock;
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volatile uint32_t clientIndex; // Current read/write index for application
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volatile uint32_t serverIndex; // Current read/write index for mediaserver
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uint8_t* buffer; // start of parameter buffer
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effect_param_cblk_t()
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: lock(Mutex::SHARED), clientIndex(0), serverIndex(0) {}
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};
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// ----------------------------------------------------------------------------
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}; // namespace android
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#endif // ANDROID_EFFECTCBASESHARED_H
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