/*
 * Copyright (C) 2009 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.
 */

//#define LOG_NDEBUG 0
#define LOG_TAG "OMXClient"
#include <utils/Log.h>

#include <binder/IServiceManager.h>
#include <media/IMediaPlayerService.h>
#include <media/stagefright/foundation/ADebug.h>
#include <media/stagefright/OMXClient.h>
#include <utils/KeyedVector.h>

#include "include/OMX.h"

namespace android {

struct MuxOMX : public IOMX {
    MuxOMX(const sp<IOMX> &remoteOMX);
    virtual ~MuxOMX();

    virtual IBinder *onAsBinder() { return NULL; }

    virtual bool livesLocally(node_id node, pid_t pid);

    virtual status_t listNodes(List<ComponentInfo> *list);

    virtual status_t allocateNode(
            const char *name, const sp<IOMXObserver> &observer,
            node_id *node);

    virtual status_t freeNode(node_id node);

    virtual status_t sendCommand(
            node_id node, OMX_COMMANDTYPE cmd, OMX_S32 param);

    virtual status_t getParameter(
            node_id node, OMX_INDEXTYPE index,
            void *params, size_t size);

    virtual status_t setParameter(
            node_id node, OMX_INDEXTYPE index,
            const void *params, size_t size);

    virtual status_t getConfig(
            node_id node, OMX_INDEXTYPE index,
            void *params, size_t size);

    virtual status_t setConfig(
            node_id node, OMX_INDEXTYPE index,
            const void *params, size_t size);

    virtual status_t getState(
            node_id node, OMX_STATETYPE* state);

    virtual status_t storeMetaDataInBuffers(
            node_id node, OMX_U32 port_index, OMX_BOOL enable);

    virtual status_t enableGraphicBuffers(
            node_id node, OMX_U32 port_index, OMX_BOOL enable);

    virtual status_t getGraphicBufferUsage(
            node_id node, OMX_U32 port_index, OMX_U32* usage);

    virtual status_t useBuffer(
            node_id node, OMX_U32 port_index, const sp<IMemory> &params,
            buffer_id *buffer);

    virtual status_t useGraphicBuffer(
            node_id node, OMX_U32 port_index,
            const sp<GraphicBuffer> &graphicBuffer, buffer_id *buffer);

    virtual status_t allocateBuffer(
            node_id node, OMX_U32 port_index, size_t size,
            buffer_id *buffer, void **buffer_data);

    virtual status_t allocateBufferWithBackup(
            node_id node, OMX_U32 port_index, const sp<IMemory> &params,
            buffer_id *buffer);

    virtual status_t freeBuffer(
            node_id node, OMX_U32 port_index, buffer_id buffer);

    virtual status_t fillBuffer(node_id node, buffer_id buffer);

    virtual status_t emptyBuffer(
            node_id node,
            buffer_id buffer,
            OMX_U32 range_offset, OMX_U32 range_length,
            OMX_U32 flags, OMX_TICKS timestamp);

    virtual status_t getExtensionIndex(
            node_id node,
            const char *parameter_name,
            OMX_INDEXTYPE *index);

private:
    mutable Mutex mLock;

    sp<IOMX> mRemoteOMX;
    sp<IOMX> mLocalOMX;

    KeyedVector<node_id, bool> mIsLocalNode;

    bool isLocalNode(node_id node) const;
    bool isLocalNode_l(node_id node) const;
    const sp<IOMX> &getOMX(node_id node) const;
    const sp<IOMX> &getOMX_l(node_id node) const;

    static bool IsSoftwareComponent(const char *name);

    DISALLOW_EVIL_CONSTRUCTORS(MuxOMX);
};

MuxOMX::MuxOMX(const sp<IOMX> &remoteOMX)
    : mRemoteOMX(remoteOMX) {
}

MuxOMX::~MuxOMX() {
}

bool MuxOMX::isLocalNode(node_id node) const {
    Mutex::Autolock autoLock(mLock);

    return isLocalNode_l(node);
}

bool MuxOMX::isLocalNode_l(node_id node) const {
    return mIsLocalNode.indexOfKey(node) >= 0;
}

// static
bool MuxOMX::IsSoftwareComponent(const char *name) {
    return !strncasecmp(name, "OMX.google.", 11);
}

const sp<IOMX> &MuxOMX::getOMX(node_id node) const {
    return isLocalNode(node) ? mLocalOMX : mRemoteOMX;
}

const sp<IOMX> &MuxOMX::getOMX_l(node_id node) const {
    return isLocalNode_l(node) ? mLocalOMX : mRemoteOMX;
}

bool MuxOMX::livesLocally(node_id node, pid_t pid) {
    return getOMX(node)->livesLocally(node, pid);
}

status_t MuxOMX::listNodes(List<ComponentInfo> *list) {
    Mutex::Autolock autoLock(mLock);

    if (mLocalOMX == NULL) {
        mLocalOMX = new OMX;
    }

    return mLocalOMX->listNodes(list);
}

status_t MuxOMX::allocateNode(
        const char *name, const sp<IOMXObserver> &observer,
        node_id *node) {
    Mutex::Autolock autoLock(mLock);

    sp<IOMX> omx;

    if (IsSoftwareComponent(name)) {
        if (mLocalOMX == NULL) {
            mLocalOMX = new OMX;
        }
        omx = mLocalOMX;
    } else {
        omx = mRemoteOMX;
    }

    status_t err = omx->allocateNode(name, observer, node);

    if (err != OK) {
        return err;
    }

    if (omx == mLocalOMX) {
        mIsLocalNode.add(*node, true);
    }

    return OK;
}

status_t MuxOMX::freeNode(node_id node) {
    Mutex::Autolock autoLock(mLock);

    status_t err = getOMX_l(node)->freeNode(node);

    if (err != OK) {
        return err;
    }

    mIsLocalNode.removeItem(node);

    return OK;
}

status_t MuxOMX::sendCommand(
        node_id node, OMX_COMMANDTYPE cmd, OMX_S32 param) {
    return getOMX(node)->sendCommand(node, cmd, param);
}

status_t MuxOMX::getParameter(
        node_id node, OMX_INDEXTYPE index,
        void *params, size_t size) {
    return getOMX(node)->getParameter(node, index, params, size);
}

status_t MuxOMX::setParameter(
        node_id node, OMX_INDEXTYPE index,
        const void *params, size_t size) {
    return getOMX(node)->setParameter(node, index, params, size);
}

status_t MuxOMX::getConfig(
        node_id node, OMX_INDEXTYPE index,
        void *params, size_t size) {
    return getOMX(node)->getConfig(node, index, params, size);
}

status_t MuxOMX::setConfig(
        node_id node, OMX_INDEXTYPE index,
        const void *params, size_t size) {
    return getOMX(node)->setConfig(node, index, params, size);
}

status_t MuxOMX::getState(
        node_id node, OMX_STATETYPE* state) {
    return getOMX(node)->getState(node, state);
}

status_t MuxOMX::storeMetaDataInBuffers(
        node_id node, OMX_U32 port_index, OMX_BOOL enable) {
    return getOMX(node)->storeMetaDataInBuffers(node, port_index, enable);
}

status_t MuxOMX::enableGraphicBuffers(
        node_id node, OMX_U32 port_index, OMX_BOOL enable) {
    return getOMX(node)->enableGraphicBuffers(node, port_index, enable);
}

status_t MuxOMX::getGraphicBufferUsage(
        node_id node, OMX_U32 port_index, OMX_U32* usage) {
    return getOMX(node)->getGraphicBufferUsage(node, port_index, usage);
}

status_t MuxOMX::useBuffer(
        node_id node, OMX_U32 port_index, const sp<IMemory> &params,
        buffer_id *buffer) {
    return getOMX(node)->useBuffer(node, port_index, params, buffer);
}

status_t MuxOMX::useGraphicBuffer(
        node_id node, OMX_U32 port_index,
        const sp<GraphicBuffer> &graphicBuffer, buffer_id *buffer) {
    return getOMX(node)->useGraphicBuffer(
            node, port_index, graphicBuffer, buffer);
}

status_t MuxOMX::allocateBuffer(
        node_id node, OMX_U32 port_index, size_t size,
        buffer_id *buffer, void **buffer_data) {
    return getOMX(node)->allocateBuffer(
            node, port_index, size, buffer, buffer_data);
}

status_t MuxOMX::allocateBufferWithBackup(
        node_id node, OMX_U32 port_index, const sp<IMemory> &params,
        buffer_id *buffer) {
    return getOMX(node)->allocateBufferWithBackup(
            node, port_index, params, buffer);
}

status_t MuxOMX::freeBuffer(
        node_id node, OMX_U32 port_index, buffer_id buffer) {
    return getOMX(node)->freeBuffer(node, port_index, buffer);
}

status_t MuxOMX::fillBuffer(node_id node, buffer_id buffer) {
    return getOMX(node)->fillBuffer(node, buffer);
}

status_t MuxOMX::emptyBuffer(
        node_id node,
        buffer_id buffer,
        OMX_U32 range_offset, OMX_U32 range_length,
        OMX_U32 flags, OMX_TICKS timestamp) {
    return getOMX(node)->emptyBuffer(
            node, buffer, range_offset, range_length, flags, timestamp);
}

status_t MuxOMX::getExtensionIndex(
        node_id node,
        const char *parameter_name,
        OMX_INDEXTYPE *index) {
    return getOMX(node)->getExtensionIndex(node, parameter_name, index);
}

OMXClient::OMXClient() {
}

status_t OMXClient::connect() {
    sp<IServiceManager> sm = defaultServiceManager();
    sp<IBinder> binder = sm->getService(String16("media.player"));
    sp<IMediaPlayerService> service = interface_cast<IMediaPlayerService>(binder);

    CHECK(service.get() != NULL);

    mOMX = service->getOMX();
    CHECK(mOMX.get() != NULL);

    if (!mOMX->livesLocally(NULL /* node */, getpid())) {
        ALOGI("Using client-side OMX mux.");
        mOMX = new MuxOMX(mOMX);
    }

    return OK;
}

void OMXClient::disconnect() {
    if (mOMX.get() != NULL) {
        mOMX.clear();
        mOMX = NULL;
    }
}

}  // namespace android