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
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include <headless/BitmapHelper.hxx>
#include <vcl/cairo.hxx>
#include <vcl/svapp.hxx>
#include <utility>
BitmapHelper::BitmapHelper(const SalBitmap& rSourceBitmap, const bool bForceARGB32)
#ifdef HAVE_CAIRO_FORMAT_RGB24_888
: m_bForceARGB32(bForceARGB32)
#endif
{
const SvpSalBitmap& rSrcBmp = static_cast<const SvpSalBitmap&>(rSourceBitmap);
#ifdef HAVE_CAIRO_FORMAT_RGB24_888
if ((rSrcBmp.GetBitCount() != 32 && rSrcBmp.GetBitCount() != 24) || bForceARGB32)
#else
(void)bForceARGB32;
if (rSrcBmp.GetBitCount() != 32)
#endif
{
//big stupid copy here
const BitmapBuffer* pSrc = rSrcBmp.GetBuffer();
const SalTwoRect aTwoRect
= { 0, 0, pSrc->mnWidth, pSrc->mnHeight, 0, 0, pSrc->mnWidth, pSrc->mnHeight };
std::optional<BitmapBuffer> pTmp
= (pSrc->meFormat == SVP_24BIT_FORMAT
&& pSrc->meDirection == ScanlineDirection::TopDown)
? FastConvert24BitRgbTo32BitCairo(pSrc)
: StretchAndConvert(*pSrc, aTwoRect, SVP_CAIRO_FORMAT);
aTmpBmp.Create(std::move(pTmp));
assert(aTmpBmp.GetBitCount() == 32);
implSetSurface(CairoCommon::createCairoSurface(aTmpBmp.GetBuffer()));
}
else
{
implSetSurface(CairoCommon::createCairoSurface(rSrcBmp.GetBuffer()));
}
}
void BitmapHelper::mark_dirty() { cairo_surface_mark_dirty(implGetSurface()); }
unsigned char* BitmapHelper::getBits(sal_Int32& rStride)
{
cairo_surface_flush(implGetSurface());
unsigned char* mask_data = cairo_image_surface_get_data(implGetSurface());
const cairo_format_t nFormat = cairo_image_surface_get_format(implGetSurface());
#ifdef HAVE_CAIRO_FORMAT_RGB24_888
if (!m_bForceARGB32)
assert(nFormat == CAIRO_FORMAT_RGB24_888 && "Expected RGB24_888 image");
else
#endif
{
assert(nFormat == CAIRO_FORMAT_ARGB32
&& "need to implement CAIRO_FORMAT_A1 after all here");
}
rStride
= cairo_format_stride_for_width(nFormat, cairo_image_surface_get_width(implGetSurface()));
return mask_data;
}
MaskHelper::MaskHelper(const SalBitmap& rAlphaBitmap)
{
const SvpSalBitmap& rMask = static_cast<const SvpSalBitmap&>(rAlphaBitmap);
const BitmapBuffer* pMaskBuf = rMask.GetBuffer();
assert(rAlphaBitmap.GetBitCount() == 8 && "we only support 8-bit masks now");
implSetSurface(cairo_image_surface_create_for_data(pMaskBuf->mpBits, CAIRO_FORMAT_A8,
pMaskBuf->mnWidth, pMaskBuf->mnHeight,
pMaskBuf->mnScanlineSize));
}
namespace
{
// check for env var that decides for using downscale pattern
const char* pDisableDownScale(getenv("SAL_DISABLE_CAIRO_DOWNSCALE"));
bool bDisableDownScale(nullptr != pDisableDownScale);
sal_Int64 estimateUsageInBytesForSurfaceHelper(const SurfaceHelper* pHelper)
{
sal_Int64 nRetval(0);
if (nullptr != pHelper)
{
cairo_surface_t* pSurface(pHelper->getSurface());
if (pSurface)
{
const tools::Long nStride(cairo_image_surface_get_stride(pSurface));
const tools::Long nHeight(cairo_image_surface_get_height(pSurface));
nRetval = nStride * nHeight;
// if we do downscale, size will grow by 1/4 + 1/16 + 1/32 + ...,
// rough estimation just multiplies by 1.25, should be good enough
// for estimation of buffer survival time
if (!bDisableDownScale)
{
nRetval = (nRetval * 5) / 4;
}
}
}
return nRetval;
}
} // end anonymous namespace
SystemDependentData_BitmapHelper::SystemDependentData_BitmapHelper(
std::shared_ptr<BitmapHelper> xBitmapHelper)
: basegfx::SystemDependentData(Application::GetSystemDependentDataManager(),
basegfx::SDD_Type::SDDType_BitmapHelper)
, maBitmapHelper(std::move(xBitmapHelper))
{
}
sal_Int64 SystemDependentData_BitmapHelper::estimateUsageInBytes() const
{
return estimateUsageInBytesForSurfaceHelper(maBitmapHelper.get());
}
SystemDependentData_MaskHelper::SystemDependentData_MaskHelper(
std::shared_ptr<MaskHelper> xMaskHelper)
: basegfx::SystemDependentData(Application::GetSystemDependentDataManager(),
basegfx::SDD_Type::SDDType_MaskHelper)
, maMaskHelper(std::move(xMaskHelper))
{
}
sal_Int64 SystemDependentData_MaskHelper::estimateUsageInBytes() const
{
return estimateUsageInBytesForSurfaceHelper(maMaskHelper.get());
}
namespace
{
// MM02 decide to use buffers or not
const char* pDisableMM02Goodies(getenv("SAL_DISABLE_MM02_GOODIES"));
bool bUseBuffer(nullptr == pDisableMM02Goodies);
const tools::Long nMinimalSquareSizeToBuffer(64 * 64);
}
void tryToUseSourceBuffer(const SalBitmap& rSourceBitmap, std::shared_ptr<BitmapHelper>& rSurface)
{
// MM02 try to access buffered BitmapHelper
std::shared_ptr<SystemDependentData_BitmapHelper> pSystemDependentData_BitmapHelper;
const bool bBufferSource(bUseBuffer
&& rSourceBitmap.GetSize().Width() * rSourceBitmap.GetSize().Height()
> nMinimalSquareSizeToBuffer);
if (bBufferSource)
{
pSystemDependentData_BitmapHelper
= rSourceBitmap.getSystemDependentData<SystemDependentData_BitmapHelper>(
basegfx::SDD_Type::SDDType_BitmapHelper);
if (pSystemDependentData_BitmapHelper)
{
// reuse buffered data
rSurface = pSystemDependentData_BitmapHelper->getBitmapHelper();
}
}
if (rSurface)
return;
// create data on-demand
rSurface = std::make_shared<BitmapHelper>(rSourceBitmap);
if (bBufferSource)
{
// add to buffering mechanism to potentially reuse next time
rSourceBitmap.addOrReplaceSystemDependentData<SystemDependentData_BitmapHelper>(rSurface);
}
}
void tryToUseMaskBuffer(const SalBitmap& rMaskBitmap, std::shared_ptr<MaskHelper>& rMask)
{
// MM02 try to access buffered MaskHelper
std::shared_ptr<SystemDependentData_MaskHelper> pSystemDependentData_MaskHelper;
const bool bBufferMask(bUseBuffer
&& rMaskBitmap.GetSize().Width() * rMaskBitmap.GetSize().Height()
> nMinimalSquareSizeToBuffer);
if (bBufferMask)
{
pSystemDependentData_MaskHelper
= rMaskBitmap.getSystemDependentData<SystemDependentData_MaskHelper>(
basegfx::SDD_Type::SDDType_MaskHelper);
if (pSystemDependentData_MaskHelper)
{
// reuse buffered data
rMask = pSystemDependentData_MaskHelper->getMaskHelper();
}
}
if (rMask)
return;
// create data on-demand
rMask = std::make_shared<MaskHelper>(rMaskBitmap);
if (bBufferMask)
{
// add to buffering mechanism to potentially reuse next time
rMaskBitmap.addOrReplaceSystemDependentData<SystemDependentData_MaskHelper>(rMask);
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
