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/*
* Copyright (C) 2010 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 ANDROID_EFFECTCBASESHARED_H
#define ANDROID_EFFECTCBASESHARED_H
#include <stdint.h>
#include <sys/types.h>
#include <utils/threads.h>
namespace android {
// ----------------------------------------------------------------------------
// Size of buffer used to exchange parameters between application and mediaserver processes.
#define EFFECT_PARAM_BUFFER_SIZE 1024
// Shared memory area used to exchange parameters between application and mediaserver
// process.
struct effect_param_cblk_t
{
Mutex lock;
volatile uint32_t clientIndex; // Current read/write index for application
volatile uint32_t serverIndex; // Current read/write index for mediaserver
uint8_t* buffer; // start of parameter buffer
effect_param_cblk_t()
: lock(Mutex::SHARED), clientIndex(0), serverIndex(0) {}
};
// ----------------------------------------------------------------------------
}; // namespace android
#endif // ANDROID_EFFECTCBASESHARED_H
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