/* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).

 *

 * Permission is hereby granted, free of charge, to any person obtaining a

 * copy of this software and /or associated documentation files

 * (the "Materials "), to deal in the Materials without restriction,

 * including without limitation the rights to use, copy, modify, merge,

 * publish, distribute, sublicense, and/or sell copies of the Materials,

 * and to permit persons to whom the Materials are furnished to do so,

 * subject to the following conditions:

 *

 * The above copyright notice and this permission notice shall be included

 * in all copies or substantial portions of the Materials.

 *

 * THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.

 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,

 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR

 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE MATERIALS OR

 * THE USE OR OTHER DEALINGS IN THE MATERIALS.

 *

 * Initial Contributors:

 * Nokia Corporation - initial contribution.

 *

 * Contributors:

 *

 * Description:

 *

 */

#include "EGLSurface.h"

#include "SurfaceDescriptor.h"

#include "EGLConfig.h"

#include "EGLContext.h"

#include "EGLOs.h"

#include <string.h>

// Required for free. \todo Shouldn't this use C++ new[]/delete[] instead?

#include <stdlib.h>

CEGLSurface::CEGLSurface( CEGLSurface::SurfaceType type, EGLint colorSpace, EGLint alphaFormat, EGLint renderBuffer, CEGLConfig* config ) :

    m_type( type ),

    m_colorSpace( colorSpace ),

    m_alphaFormat( alphaFormat ),

    m_renderBuffer( renderBuffer ),

    m_config( config ),

    m_boundContext( NULL ),

    m_thread( NULL ),

    m_mipmapLevel( 0 ),

    m_multisampleResolve( EGL_MULTISAMPLE_RESOLVE_DEFAULT ),

    m_swapBehavior( /*EGL_BUFFER_DESTROYED*/EGL_BUFFER_PRESERVED ),

    m_vgDirty(false),

    m_gles1Dirty(false),

    m_gles2Dirty(false),

    m_isLocked(false)

    {

    EGLI_ASSERT( m_config != NULL );

	memset( &m_textureBinding, 0, sizeof(struct EGLITextureBinding) );

    memset( &m_vgBuffers, 0, sizeof(struct BufferContainer) );

    memset( &m_glesBuffers, 0, sizeof(struct BufferContainer) );

    CEGLOs::InitializeLock( &m_lock );

    }

CEGLSurface::~CEGLSurface(void)

    {

    if( m_glesBuffers.m_colorBuffer )

        free (m_glesBuffers.m_colorBuffer );

    CEGLOs::DestroyLock( &m_lock );

    }

void CEGLSurface::BindToContext( CEGLContext* context ) 

    { 

    m_boundContext = context;

    }

bool CEGLSurface::Resize( EGLint width, EGLint height )

    {

    if( width == m_width && height == m_height && m_glesBuffers.m_colorBuffer )

        {

        // Size didn't change and we have gles color buffer already

        return true;

        }

    if( width != m_width )

        {

        SetStride( (width * m_config->GetDescriptor()->Bpp() + 7)/8 );

        }

    m_width = width;

    m_height = height;

    if( m_glesBuffers.m_colorBuffer )

        free( m_glesBuffers.m_colorBuffer );

    m_glesBuffers.m_colorBuffer = malloc( height * m_stride );

    if( !(m_glesBuffers.m_colorBuffer) ) return false;

    return true;

    }

SurfaceDescriptor* CEGLSurface::Descriptor()

    {

    CColorDescriptor* colorDesc = m_config->GetDescriptor();

    EGLI_ASSERT( colorDesc != NULL );

    m_surfaceDescriptor.m_width = Width();

    m_surfaceDescriptor.m_height = Height();

    m_surfaceDescriptor.m_stride = Stride();

    m_surfaceDescriptor.m_colorDescriptor = *colorDesc;

    m_surfaceDescriptor.m_colorDescriptor.SetSurfaceType(m_colorSpace, m_alphaFormat);

    EGLint alphaSize = colorDesc->AlphaSize();

    EGLint blueSize = colorDesc->BlueSize();

    EGLint greenSize = colorDesc->GreenSize();

    EGLint redSize = colorDesc->RedSize();

    EGLint luminanceSize = colorDesc->LuminanceSize();

    if( colorDesc->isLuminance() )

        {

        // \todo LA AL?

        m_surfaceDescriptor.m_redShift = 0;

        m_surfaceDescriptor.m_greenShift = 0;

        m_surfaceDescriptor.m_blueShift = 0;

        m_surfaceDescriptor.m_alphaShift = 0;

        m_surfaceDescriptor.m_luminanceShift = alphaSize;

        }

    else

        {

        m_surfaceDescriptor.m_luminanceShift = 0;

        /*  Found these from CPlatsimEGL::egliGetSymbianPixelFormat()

            in platsim_graphics/platsimegl/src/platsimegl.cpp. Pixel format

            should be transfered through serialization.

            EUidPixelFormatARGB_8888

            EUidPixelFormatARGB_8888_PRE

            EUidPixelFormatXRGB_8888

            EUidPixelFormatARGB_4444

            EUidPixelFormatXRGB_4444

            EUidPixelFormatRGB_565

            EUidPixelFormatARGB_1555

            -- 

            Harri

        */

        // \todo We need pixel format through serialization.

#if defined(EGLI_USE_PLATSIM_EXTENSIONS)

        m_surfaceDescriptor.m_blueShift = 0;

        m_surfaceDescriptor.m_greenShift = blueSize;

        m_surfaceDescriptor.m_redShift = blueSize + greenSize;

        m_surfaceDescriptor.m_alphaShift = blueSize + greenSize + redSize;

#else

        // \note TeroP, changing these to match OpenVG color formats. This should make blitting

        // to _win32_ window fast, but a solution for Symbian vs. Win32 native build should be

        // defined.

        // That is: This has to match the EGLtoVGInterface::CopyBuffers VGImageFormat somehow.

        // Currently: VG_sARGB_8888_PRE;

        m_surfaceDescriptor.m_blueShift = 0;

        m_surfaceDescriptor.m_greenShift = blueSize;

        m_surfaceDescriptor.m_redShift = blueSize + greenSize;

        m_surfaceDescriptor.m_alphaShift = redSize + greenSize + blueSize;

#endif //EGLI_USE_PLATSIM_EXTENSIONS

        }

    m_surfaceDescriptor.m_maskSize = m_surfaceDescriptor.m_colorDescriptor.AlphaMaskSize();

    m_surfaceDescriptor.m_stencilSize = m_config->GetAttribute( EGL_STENCIL_SIZE );

    m_surfaceDescriptor.m_depthSize = m_config->GetAttribute( EGL_DEPTH_SIZE );

    return &m_surfaceDescriptor;

    }

void CEGLSurface::SetAttribute( EGLint attrib, EGLint value )

    {

    switch( attrib )

        {

        case EGL_MIPMAP_LEVEL:

            {

            m_mipmapLevel = value;

            break;

            }

        case EGL_MULTISAMPLE_RESOLVE:

            {

            m_multisampleResolve = value;

            break;

            }

        case EGL_SWAP_BEHAVIOR:

            {

            m_swapBehavior = value;

            break;

            }

        }

    }

EGLint CEGLSurface::Attribute( EGLint attrib ) const

    {

    EGLint ret = EGL_BAD_ATTRIBUTE;

    switch( attrib )

        {

        case EGL_MIPMAP_LEVEL:

            {

            ret = m_mipmapLevel;

            break;

            }

        case EGL_MULTISAMPLE_RESOLVE:

            {

            ret = m_multisampleResolve;

            break;

            }

        case EGL_SWAP_BEHAVIOR:

            {

            ret = m_swapBehavior;

            break;

            }

        }

    return ret;

    }

void CEGLSurface::Lock()

    {

    CEGLOs::GetLock( &m_lock );

    m_isLocked = true;

    }

void CEGLSurface::Unlock()

    {

    CEGLOs::ReleaseLock( &m_lock );

    m_isLocked = false;

    }