/*
* Copyright (C) 2006 Apple Computer, Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "ImageSource.h"
#include "bitmap/AnimationDecoder.h"
#include "bitmap/MaskedBitmap.h"
#include "SharedBuffer.h"
#include "IntSize.h"
namespace WebCore {
/*ImageDecoder* createDecoder(const Vector<char>& data)
{
// We need at least 4 bytes to figure out what kind of image we're dealing with.
int length = data.size();
if (length < 4)
return 0;
const unsigned char* uContents = (const unsigned char*)data.data();
const char* contents = data.data();
// GIFs begin with GIF8(7 or 9).
if (strncmp(contents, "GIF8", 4) == 0)
return new GIFImageDecoder();
// Test for PNG.
if (uContents[0]==0x89 &&
uContents[1]==0x50 &&
uContents[2]==0x4E &&
uContents[3]==0x47)
return new PNGImageDecoder();
// JPEG
if (uContents[0]==0xFF &&
uContents[1]==0xD8 &&
uContents[2]==0xFF)
return new JPEGImageDecoder();
// BMP
if (strncmp(contents, "BM", 2) == 0)
return new BMPImageDecoder();
// ICOs always begin with a 2-byte 0 followed by a 2-byte 1.
// CURs begin with 2-byte 0 followed by 2-byte 2.
if (!memcmp(contents, "\000\000\001\000", 4) ||
!memcmp(contents, "\000\000\002\000", 4))
return new ICOImageDecoder();
// XBMs require 8 bytes of info.
if (length >= 8 && strncmp(contents, "#define ", 8) == 0)
return new XBMImageDecoder();
// Give up. We don't know what the heck this is.
return 0;
}*/
ImageSource::ImageSource()
: m_decoder(0)
{}
ImageSource::~ImageSource()
{
delete m_decoder;
}
bool ImageSource::initialized() const
{
return m_decoder;
}
void ImageSource::setMimeType(const String& mimeType)
{
m_mimeType = mimeType;
}
const String& ImageSource::getMimeType()
{
return m_mimeType;
}
void ImageSource::setDataL(SharedBuffer* data, bool allDataReceived)
{
// Make the decoder by sniffing the bytes.
// This method will examine the data and instantiate an instance of the appropriate decoder plugin.
// If insufficient bytes are available to determine the image type, no decoder plugin will be
// made.
if( !allDataReceived ) return;
if( !m_decoder )
// sync decoding if no observer is passed
m_decoder = CAnimationDecoder::NewL( NULL );
if( m_decoder ) {
TPtrC8 ptr( (const TUint8*)data->data(), data->size() );
TPtrC16 ptr16(m_mimeType.des());
m_decoder->OpenL( ptr, &ptr16, ETrue );
}
}
bool ImageSource::isSizeAvailable()
{
if (!m_decoder)
return false;
return m_decoder->isSizeAvailable();
}
IntSize ImageSource::size() const
{
if (!m_decoder)
return IntSize();
return m_decoder->Size();
}
int ImageSource::repetitionCount()
{
if (!m_decoder)
return cAnimationNone;
int loop = m_decoder->getLoopCount();
if( loop == -1) {
return KMaxTInt;
}
return loop;
}
size_t ImageSource::frameCount() const
{
if( m_decoder ) {
return m_decoder->AnimationFrameCount();
}
return 0;
}
NativeImagePtr ImageSource::createFrameAtIndex(size_t index)
{
if (!m_decoder)
return 0;
return m_decoder->Destination();
}
float ImageSource::frameDurationAtIndex(size_t index)
{
if (!m_decoder)
return 0;
return (float)(m_decoder->Destination()->FrameDelay().Int()) / 1000000.0f;
}
bool ImageSource::frameHasAlphaAtIndex(size_t index)
{
CMaskedBitmap* bmp = m_decoder->Destination();
if( bmp->HasMask() ) {
return bmp->Mask().DisplayMode() == EGray256;
}
return false;
}
void ImageSource::setDecoderListener(ImageObserver* listener)
{
if( !m_decoder )
TRAP_IGNORE( m_decoder = CAnimationDecoder::NewL( listener ) );
}
}