1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
|
/*
* Copyright (C) 2012 Google 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 AND ITS CONTRIBUTORS "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 OR ITS 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 "platform/graphics/DecodingImageGenerator.h"
#include "SkData.h"
#include "SkImageInfo.h"
#include "platform/PlatformInstrumentation.h"
#include "platform/SharedBuffer.h"
#include "platform/TraceEvent.h"
#include "platform/graphics/ImageFrameGenerator.h"
namespace WebCore {
DecodingImageGenerator::DecodingImageGenerator(PassRefPtr<ImageFrameGenerator> frameGenerator, const SkImageInfo& info, size_t index)
: m_frameGenerator(frameGenerator)
, m_imageInfo(info)
, m_frameIndex(index)
, m_generationId(0)
{
}
DecodingImageGenerator::~DecodingImageGenerator()
{
}
SkData* DecodingImageGenerator::onRefEncodedData()
{
// FIXME: If the image has been clipped or scaled, do not return the original
// encoded data, since on playback it will not be known how the clipping/scaling
// was done.
RefPtr<SharedBuffer> buffer = nullptr;
bool allDataReceived = false;
m_frameGenerator->copyData(&buffer, &allDataReceived);
if (buffer && allDataReceived)
return SkData::NewWithCopy(buffer->data(), buffer->size());
return 0;
}
bool DecodingImageGenerator::onGetInfo(SkImageInfo* info)
{
*info = m_imageInfo;
return true;
}
bool DecodingImageGenerator::onGetPixels(const SkImageInfo& info, void* pixels, size_t rowBytes, SkPMColor ctable[], int* ctableCount)
{
TRACE_EVENT1("webkit", "DecodingImageGenerator::getPixels", "index", static_cast<int>(m_frameIndex));
// Implementation doesn't support scaling yet so make sure we're not given
// a different size.
ASSERT(info.fWidth == m_imageInfo.fWidth);
ASSERT(info.fHeight == m_imageInfo.fHeight);
ASSERT(info.fColorType == m_imageInfo.fColorType);
ASSERT(info.fAlphaType == m_imageInfo.fAlphaType);
PlatformInstrumentation::willDecodeLazyPixelRef(m_generationId);
bool decoded = m_frameGenerator->decodeAndScale(m_imageInfo, m_frameIndex, pixels, rowBytes);
PlatformInstrumentation::didDecodeLazyPixelRef();
return decoded;
}
} // namespace blink
|
