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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 A_MESSAGE_H_
#define A_MESSAGE_H_
#include <media/stagefright/foundation/ABase.h>
#include <media/stagefright/foundation/ALooper.h>
#include <utils/KeyedVector.h>
#include <utils/RefBase.h>
namespace android {
struct AString;
struct AMessage : public RefBase {
AMessage(uint32_t what = 0, ALooper::handler_id target = 0);
void setWhat(uint32_t what);
uint32_t what() const;
void setTarget(ALooper::handler_id target);
ALooper::handler_id target() const;
void setInt32(const char *name, int32_t value);
void setInt64(const char *name, int64_t value);
void setSize(const char *name, size_t value);
void setFloat(const char *name, float value);
void setDouble(const char *name, double value);
void setPointer(const char *name, void *value);
void setString(const char *name, const char *s, ssize_t len = -1);
void setObject(const char *name, const sp<RefBase> &obj);
void setMessage(const char *name, const sp<AMessage> &obj);
bool findInt32(const char *name, int32_t *value) const;
bool findInt64(const char *name, int64_t *value) const;
bool findSize(const char *name, size_t *value) const;
bool findFloat(const char *name, float *value) const;
bool findDouble(const char *name, double *value) const;
bool findPointer(const char *name, void **value) const;
bool findString(const char *name, AString *value) const;
bool findObject(const char *name, sp<RefBase> *obj) const;
bool findMessage(const char *name, sp<AMessage> *obj) const;
void post(int64_t delayUs = 0);
sp<AMessage> dup() const;
protected:
virtual ~AMessage();
private:
enum Type {
kTypeInt32,
kTypeInt64,
kTypeSize,
kTypeFloat,
kTypeDouble,
kTypePointer,
kTypeString,
kTypeObject,
kTypeMessage,
};
uint32_t mWhat;
ALooper::handler_id mTarget;
struct Item {
union {
int32_t int32Value;
int64_t int64Value;
size_t sizeValue;
float floatValue;
double doubleValue;
void *ptrValue;
RefBase *refValue;
AString *stringValue;
} u;
const char *mName;
Type mType;
};
enum {
kMaxNumItems = 16
};
Item mItems[kMaxNumItems];
size_t mNumItems;
void clear();
Item *allocateItem(const char *name);
void freeItem(Item *item);
const Item *findItem(const char *name, Type type) const;
DISALLOW_EVIL_CONSTRUCTORS(AMessage);
};
} // namespace android
#endif // A_MESSAGE_H_
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