host-common/AndroidAgentFactory.h

// Copyright (C) 2020 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.

#pragma once

#include "vm_operations.h"
#include "multi_display_agent.h"
#include "window_agent.h"
#include "record_screen_agent.h"

typedef int (*LineConsumerCallback)(void* opaque, const char* buff, int len);

#define ANDROID_CONSOLE_AGENTS_LIST(X)          \
    X(QAndroidEmulatorWindowAgent, emu)         \
    X(QAndroidDisplayAgent, display)         \
    X(QAndroidRecordScreenAgent, record)        \
    X(QAndroidMultiDisplayAgent, multi_display) \
    X(QAndroidVmOperations, vm)                 \

namespace android {
namespace emulation {
#define ANDROID_DEFINE_CONSOLE_GETTER(typ, name) \
    virtual const typ* const android_get_##typ() const;

// The default android console factory will not do anything, it will
// leave the console agents intact.
//
// You an call injectConsoleAgents multiple times with this factory.
//
// If you want to override existing agents you can subclass this factory,
// override the method of interest and call injectConsoleAgents, it will replace
// the existing agents with the one your factory provides.
class AndroidConsoleFactory {
public:
    ANDROID_CONSOLE_AGENTS_LIST(ANDROID_DEFINE_CONSOLE_GETTER)
};


// Call this method to inject the console agents into the emulator. You usally
// want to call this function *BEFORE* any calls to getConsoleAgents are made.
//
// You can provide a factory that will be used to construct all the individual
// agents.
//
// Note: It is currently not safe to inject agents after the first injection has
// taken place.
void injectConsoleAgents(
        const AndroidConsoleFactory& factory);

}  // namespace emulation
}  // namespace android

extern "C" {

#define ANDROID_CONSOLE_DEFINE_POINTER(type, name) const type* name;
typedef struct AndroidConsoleAgents {
    ANDROID_CONSOLE_AGENTS_LIST(ANDROID_CONSOLE_DEFINE_POINTER)
} AndroidConsoleAgents;

const AndroidConsoleAgents* getConsoleAgents();

} // extern "C"