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      1 /*
      2  * Copyright (C) 2006 Apple Computer, Inc.  All rights reserved.
      3  * Copyright (C) 2008, 2009 Google, Inc.
      4  * Copyright (C) 2009 Holger Hans Peter Freyther
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  *
     15  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
     16  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     18  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
     19  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     20  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     21  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     22  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     23  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     25  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     26  */
     27 
     28 #include "config.h"
     29 #include "ImageDecoder.h"
     30 
     31 #include "NotImplemented.h"
     32 
     33 #include <QPixmap>
     34 #include <stdio.h>
     35 
     36 namespace WebCore {
     37 
     38 ImageFrame::ImageFrame()
     39     : m_hasAlpha(false)
     40     , m_size()
     41     , m_status(FrameEmpty)
     42     , m_duration(0)
     43     , m_disposalMethod(DisposeNotSpecified)
     44 {
     45 }
     46 
     47 ImageFrame& ImageFrame::operator=(const ImageFrame& other)
     48 {
     49     if (this == &other)
     50         return *this;
     51 
     52     copyBitmapData(other);
     53     setOriginalFrameRect(other.originalFrameRect());
     54     setStatus(other.status());
     55     setDuration(other.duration());
     56     setDisposalMethod(other.disposalMethod());
     57     return *this;
     58 }
     59 
     60 void ImageFrame::clearPixelData()
     61 {
     62     m_pixmap = QPixmap();
     63     m_image = QImage();
     64     m_status = FrameEmpty;
     65     // NOTE: Do not reset other members here; clearFrameBufferCache()
     66     // calls this to free the bitmap data, but other functions like
     67     // initFrameBuffer() and frameComplete() may still need to read
     68     // other metadata out of this frame later.
     69 }
     70 
     71 void ImageFrame::zeroFillPixelData()
     72 {
     73     if (m_pixmap.isNull() && !m_image.isNull()) {
     74         m_pixmap = QPixmap(m_image.width(), m_image.height());
     75         m_image = QImage();
     76     }
     77     m_pixmap.fill(QColor(0, 0, 0, 0));
     78 }
     79 
     80 bool ImageFrame::copyBitmapData(const ImageFrame& other)
     81 {
     82     if (this == &other)
     83         return true;
     84 
     85     m_image = other.m_image;
     86     m_pixmap = other.m_pixmap;
     87     m_size = other.m_size;
     88     m_hasAlpha = other.m_hasAlpha;
     89     return true;
     90 }
     91 
     92 bool ImageFrame::setSize(int newWidth, int newHeight)
     93 {
     94     // This function should only be called once, it will leak memory
     95     // otherwise.
     96     ASSERT(width() == 0 && height() == 0);
     97 
     98     m_size = IntSize(newWidth, newHeight);
     99     m_image = QImage();
    100     m_pixmap = QPixmap(newWidth, newHeight);
    101     if (m_pixmap.isNull())
    102         return false;
    103 
    104     zeroFillPixelData();
    105 
    106     return true;
    107 }
    108 
    109 QPixmap* ImageFrame::asNewNativeImage() const
    110 {
    111     if (m_pixmap.isNull() && !m_image.isNull()) {
    112         m_pixmap = QPixmap::fromImage(m_image);
    113         m_image = QImage();
    114     }
    115     return new QPixmap(m_pixmap);
    116 }
    117 
    118 bool ImageFrame::hasAlpha() const
    119 {
    120     return m_hasAlpha;
    121 }
    122 
    123 void ImageFrame::setHasAlpha(bool alpha)
    124 {
    125     m_hasAlpha = alpha;
    126 }
    127 
    128 void ImageFrame::setColorProfile(const ColorProfile& colorProfile)
    129 {
    130     notImplemented();
    131 }
    132 
    133 void ImageFrame::setStatus(FrameStatus status)
    134 {
    135     m_status = status;
    136 }
    137 
    138 // The image must not have format 8888 pre multiplied...
    139 void ImageFrame::setPixmap(const QPixmap& pixmap)
    140 {
    141     m_pixmap = pixmap;
    142     m_image = QImage();
    143     m_size = pixmap.size();
    144     m_hasAlpha = pixmap.hasAlphaChannel();
    145 }
    146 
    147 int ImageFrame::width() const
    148 {
    149     return m_size.width();
    150 }
    151 
    152 int ImageFrame::height() const
    153 {
    154     return m_size.height();
    155 }
    156 
    157 }
    158