root/libvaapi/VaapiSubpicture.cpp

DEFINITIONS

1. _subpicture
2. create
3. destroy

// VaapiSubpicture.cpp: VA subpicture abstraction
// 
// Copyright (C) 2009, 2010, 2011 Free Software Foundation, Inc.
// 
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 3 of the License, or
// (at your option) any later version.
// 
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
// 
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
//

#include <boost/format.hpp>

#include "log.h"
#include "VaapiSubpicture.h"
#include "VaapiGlobalContext.h"
#include "VaapiException.h"
#include "VaapiImage.h"
#include "vaapi_utils.h"

namespace gnash {

VaapiSubpicture::VaapiSubpicture(boost::shared_ptr<VaapiImage> image)
    : _image(image)
    , _subpicture(VA_INVALID_ID)
{
    log_debug("VaapiSubpicture::VaapiSubpicture(): format '%s'\n", string_of_FOURCC(image->format()));

    if (!create()) {
        boost::format msg;
        msg = boost::format("Could not create %s subpicture")
            % string_of_FOURCC(image->format());
        throw VaapiException(msg.str());
    }
}

VaapiSubpicture::~VaapiSubpicture()
{
    GNASH_REPORT_FUNCTION;

    destroy();
}

bool VaapiSubpicture::create()
{
    GNASH_REPORT_FUNCTION;

    if (!_image.get()) {
        return false;
    }

    VaapiGlobalContext * const gvactx = VaapiGlobalContext::get();
    if (!gvactx) {
        return false;
    }

    VASubpictureID subpicture;
    VAStatus status = vaCreateSubpicture(gvactx->display(), _image->get(), &subpicture);
    if (!vaapi_check_status(status, "vaCreateSubpicture()")) {
        return false;
    }

    _subpicture = subpicture;
    return true;
}

void VaapiSubpicture::destroy()
{
    VaapiGlobalContext * const gvactx = VaapiGlobalContext::get();
    if (!gvactx) {
        return;
    }

    if (_subpicture != VA_INVALID_ID) {
        VAStatus status = vaDestroySubpicture(gvactx->display(), _subpicture);
        if (!vaapi_check_status(status, "vaDestroySubpicture()"))
            return;
        _subpicture = VA_INVALID_ID;
    }
}

} // end of gnash namespace

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