liboverlay/pipes/overlayGenPipe.cpp

/*
* Copyright (c) 2012-2013, The Linux Foundation. All rights reserved.
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* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
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#include "overlayGenPipe.h"
#include "overlay.h"
#include "mdp_version.h"

namespace overlay {

GenericPipe::GenericPipe(int dpy) : mDpy(dpy), mRotDownscaleOpt(false),
    pipeState(CLOSED) {
    init();
}

GenericPipe::~GenericPipe() {
    close();
}

bool GenericPipe::init()
{
    ALOGE_IF(DEBUG_OVERLAY, "GenericPipe init");
    mRotDownscaleOpt = false;

    int fbNum = 0;
    //TODO Remove the if block. What's in else block should be the standard way
    //EXTERNAL's meaning has been overloaded in hwc to mean WFD also!
    if(mDpy == Overlay::DPY_EXTERNAL) {
        fbNum = Overlay::getInstance()->getExtFbNum();
    } else if(mDpy == Overlay::DPY_WRITEBACK) {
        fbNum = Overlay::getFbForDpy(mDpy);
    }

    ALOGD_IF(DEBUG_OVERLAY,"%s: mFbNum:%d",__FUNCTION__, fbNum);

    if(!mCtrlData.ctrl.init(fbNum)) {
        ALOGE("GenericPipe failed to init ctrl");
        return false;
    }

    if(!mCtrlData.data.init(fbNum)) {
        ALOGE("GenericPipe failed to init data");
        return false;
    }

    return true;
}

bool GenericPipe::close() {
    bool ret = true;

    if(!mCtrlData.ctrl.close()) {
        ALOGE("GenericPipe failed to close ctrl");
        ret = false;
    }
    if (!mCtrlData.data.close()) {
        ALOGE("GenericPipe failed to close data");
        ret = false;
    }

    setClosed();
    return ret;
}

void GenericPipe::setSource(const utils::PipeArgs& args) {
    mRotDownscaleOpt = args.rotFlags & utils::ROT_DOWNSCALE_ENABLED;
    mCtrlData.ctrl.setSource(args);
}

void GenericPipe::setCrop(const overlay::utils::Dim& d) {
    mCtrlData.ctrl.setCrop(d);
}

void GenericPipe::setTransform(const utils::eTransform& orient) {
    mCtrlData.ctrl.setTransform(orient);
}

void GenericPipe::setPosition(const utils::Dim& d) {
    mCtrlData.ctrl.setPosition(d);
}

bool GenericPipe::setVisualParams(const MetaData_t &metadata)
{
        return mCtrlData.ctrl.setVisualParams(metadata);
}

bool GenericPipe::commit() {
    bool ret = false;
    int downscale_factor = utils::ROT_DS_NONE;

    if(mRotDownscaleOpt) {
        ovutils::Dim src(mCtrlData.ctrl.getCrop());
        ovutils::Dim dst(mCtrlData.ctrl.getPosition());
        downscale_factor = ovutils::getDownscaleFactor(
                src.w, src.h, dst.w, dst.h);
    }

    mCtrlData.ctrl.setDownscale(downscale_factor);
    ret = mCtrlData.ctrl.commit();

    pipeState = ret ? OPEN : CLOSED;
    return ret;
}

bool GenericPipe::queueBuffer(int fd, uint32_t offset) {
    //TODO Move pipe-id transfer to CtrlData class. Make ctrl and data private.
    OVASSERT(isOpen(), "State is closed, cannot queueBuffer");
    int pipeId = mCtrlData.ctrl.getPipeId();
    OVASSERT(-1 != pipeId, "Ctrl ID should not be -1");
    // set pipe id from ctrl to data
    mCtrlData.data.setPipeId(pipeId);

    return mCtrlData.data.queueBuffer(fd, offset);
}

int GenericPipe::getCtrlFd() const {
    return mCtrlData.ctrl.getFd();
}

utils::Dim GenericPipe::getCrop() const
{
    return mCtrlData.ctrl.getCrop();
}

void GenericPipe::dump() const
{
    ALOGE("== Dump Generic pipe start ==");
    ALOGE("pipe state = %d", (int)pipeState);
    mCtrlData.ctrl.dump();
    mCtrlData.data.dump();

    ALOGE("== Dump Generic pipe end ==");
}

void GenericPipe::getDump(char *buf, size_t len) {
    mCtrlData.ctrl.getDump(buf, len);
    mCtrlData.data.getDump(buf, len);
}

bool GenericPipe::isClosed() const  {
    return (pipeState == CLOSED);
}

bool GenericPipe::isOpen() const  {
    return (pipeState == OPEN);
}

bool GenericPipe::setClosed() {
    pipeState = CLOSED;
    return true;
}

void GenericPipe::forceSet() {
    mCtrlData.ctrl.forceSet();
}

} //namespace overlay