vcl/headless/svpbmp.cxx | 5 +-
vcl/headless/svpgdi.cxx | 98 ++++++++++++++++++++++++++++++++++++++++--
vcl/inc/headless/svpgdi.hxx | 3 +
vcl/qa/cppunit/BitmapTest.cxx | 22 ++-------
4 files changed, 105 insertions(+), 23 deletions(-)
New commits:
commit 11adb51f2553dc4a838c8668d94909771d70e1ab
Author: Ashod Nakashian <ashod.nakash...@collabora.co.uk>
Date: Sun Dec 3 23:35:26 2017 -0500
vcl-svp: Store 24-bit images in 3-byte pixels
This adds support in headless rendering for more
compact 24-bit RGB image storage in 3-byte pixels
instead of 4 bytes.
There is a conversion necessary to accomodate Cairo,
which requires 4-byte pixels, but that is relatively.
Early tests show no loss of performance at runtime.
Change-Id: I3919f7c56d14d09e67f163f035b4c7683b49087c
(cherry picked from commit 354ad875092fd0c3b12f232950375206ec5d66a6)
Reviewed-on: https://gerrit.libreoffice.org/46679
Reviewed-by: Jan Holesovsky <ke...@collabora.com>
Tested-by: Jan Holesovsky <ke...@collabora.com>
diff --git a/vcl/headless/svpbmp.cxx b/vcl/headless/svpbmp.cxx
index c3ba02f57528..63d0ee047046 100644
--- a/vcl/headless/svpbmp.cxx
+++ b/vcl/headless/svpbmp.cxx
@@ -96,14 +96,15 @@ BitmapBuffer* ImplCreateDIB(
pDIB->maColorMask = ColorMask(aRedMask, aGreenMask, aBlueMask);
break;
}
+ case 24:
+ pDIB->mnFormat = SVP_24BIT_FORMAT;
+ break;
default:
nBitCount = 32;
SAL_FALLTHROUGH;
case 32:
- {
pDIB->mnFormat = SVP_CAIRO_FORMAT;
break;
- }
}
pDIB->mnFormat |= ScanlineFormat::TopDown;
diff --git a/vcl/headless/svpgdi.cxx b/vcl/headless/svpgdi.cxx
index 8f09939df899..cd546ab5fdb1 100644
--- a/vcl/headless/svpgdi.cxx
+++ b/vcl/headless/svpgdi.cxx
@@ -23,6 +23,7 @@
#include "headless/svpcairotextrender.hxx"
#include "saldatabasic.hxx"
+#include <o3tl/safeint.hxx>
#include <vcl/sysdata.hxx>
#include <config_cairo_canvas.h>
#include <basegfx/numeric/ftools.hxx>
@@ -123,25 +124,113 @@ namespace
}
}
+ BitmapBuffer* FastConvert24BitRgbTo32BitCairo(const BitmapBuffer* pSrc)
+ {
+ if (pSrc == nullptr)
+ return nullptr;
+
+ assert(pSrc->mnFormat == SVP_24BIT_FORMAT);
+ const long nWidth = pSrc->mnWidth;
+ const long nHeight = pSrc->mnHeight;
+ BitmapBuffer* pDst = new BitmapBuffer;
+ pDst->mnFormat = (ScanlineFormat::N32BitTcArgb |
ScanlineFormat::TopDown);
+ pDst->mnWidth = nWidth;
+ pDst->mnHeight = nHeight;
+ pDst->mnBitCount = 32;
+ pDst->maColorMask = pSrc->maColorMask;
+ pDst->maPalette = pSrc->maPalette;
+
+ long nScanlineBase;
+ bool bFail = o3tl::checked_multiply<long>(pDst->mnBitCount, nWidth,
nScanlineBase);
+ if (bFail)
+ {
+ SAL_WARN("vcl.gdi", "checked multiply failed");
+ pDst->mpBits = nullptr;
+ delete pDst;
+ return nullptr;
+ }
+
+ pDst->mnScanlineSize = AlignedWidth4Bytes(nScanlineBase);
+ if (pDst->mnScanlineSize < nScanlineBase/8)
+ {
+ SAL_WARN("vcl.gdi", "scanline calculation wraparound");
+ pDst->mpBits = nullptr;
+ delete pDst;
+ return nullptr;
+ }
+
+ try
+ {
+ pDst->mpBits = new sal_uInt8[ pDst->mnScanlineSize * nHeight ];
+ }
+ catch( const std::bad_alloc& )
+ {
+ // memory exception, clean up
+ pDst->mpBits = nullptr;
+ delete pDst;
+ return nullptr;
+ }
+
+ for (int y = 0; y < nHeight; ++y)
+ {
+ sal_uInt8* pS = pSrc->mpBits + y * pSrc->mnScanlineSize;
+ sal_uInt8* pD = pDst->mpBits + y * pDst->mnScanlineSize;
+ for (int x = 0; x < nWidth; ++x)
+ {
+ if ((SVP_CAIRO_FORMAT & ~ScanlineFormat::TopDown) ==
ScanlineFormat::N32BitTcRgba)
+ {
+ pD[0] = pS[0];
+ pD[1] = pS[1];
+ pD[2] = pS[2];
+ pD[3] = 0xff; // Alpha
+ }
+ else if ((SVP_CAIRO_FORMAT & ~ScanlineFormat::TopDown) ==
ScanlineFormat::N32BitTcArgb)
+ {
+ pD[0] = 0xff; // Alpha
+ pD[1] = pS[0];
+ pD[2] = pS[1];
+ pD[3] = pS[2];
+ }
+ else if ((SVP_CAIRO_FORMAT & ~ScanlineFormat::TopDown) ==
ScanlineFormat::N32BitTcBgra)
+ {
+ pD[0] = pS[2];
+ pD[1] = pS[1];
+ pD[2] = pS[0];
+ pD[3] = 0xff; // Alpha
+ }
+ else
+ {
+ assert(!"Unsupported SVP_CAIRO_FORMAT!");
+ }
+
+ pS += 3;
+ pD += 4;
+ }
+ }
+
+ return pDst;
+ }
+
class SourceHelper
{
public:
explicit SourceHelper(const SalBitmap& rSourceBitmap)
{
const SvpSalBitmap& rSrcBmp = static_cast<const
SvpSalBitmap&>(rSourceBitmap);
-
if (rSrcBmp.GetBitCount() != 32)
{
//big stupid copy here
- static bool bWarnedOnce;
+ static bool bWarnedOnce = false;
SAL_WARN_IF(!bWarnedOnce, "vcl.gdi", "non default depth
bitmap, slow convert, upscale the input");
bWarnedOnce = true;
const BitmapBuffer* pSrc = rSrcBmp.GetBuffer();
const SalTwoRect aTwoRect = { 0, 0, pSrc->mnWidth,
pSrc->mnHeight,
0, 0, pSrc->mnWidth,
pSrc->mnHeight };
- aTmpBmp.Create(StretchAndConvert(*pSrc, aTwoRect,
SVP_CAIRO_FORMAT));
-
+ BitmapBuffer* pTmp = (pSrc->mnFormat == SVP_24BIT_FORMAT
+ ? FastConvert24BitRgbTo32BitCairo(pSrc)
+ : StretchAndConvert(*pSrc, aTwoRect,
SVP_CAIRO_FORMAT));
+ aTmpBmp.Create(pTmp);
assert(aTmpBmp.GetBitCount() == 32);
source =
SvpSalGraphics::createCairoSurface(aTmpBmp.GetBuffer());
@@ -1350,6 +1439,7 @@ namespace
if (!pBuffer)
return false;
+ // Cairo doesn't support 24-bit RGB; only ARGB with the alpha ignored.
if (pBuffer->mnBitCount != 32 && pBuffer->mnBitCount != 1)
return false;
diff --git a/vcl/inc/headless/svpgdi.hxx b/vcl/inc/headless/svpgdi.hxx
index 488cb51868e0..f092b0375822 100644
--- a/vcl/inc/headless/svpgdi.hxx
+++ b/vcl/inc/headless/svpgdi.hxx
@@ -58,6 +58,9 @@
# define SVP_CAIRO_ALPHA 3
#endif
+// Used to store 24-bit images in 3-byte pixels to conserve memory.
+#define SVP_24BIT_FORMAT (ScanlineFormat::N24BitTcRgb |
ScanlineFormat::TopDown)
+
struct BitmapBuffer;
class GlyphCache;
class FreetypeFont;
diff --git a/vcl/qa/cppunit/BitmapTest.cxx b/vcl/qa/cppunit/BitmapTest.cxx
index fe76f51e5232..3cdea8fdd928 100644
--- a/vcl/qa/cppunit/BitmapTest.cxx
+++ b/vcl/qa/cppunit/BitmapTest.cxx
@@ -75,24 +75,12 @@ void BitmapTest::testConvert()
CPPUNIT_ASSERT_EQUAL(sal_uInt16(24), aBitmap.GetBitCount());
{
Bitmap::ScopedReadAccess pReadAccess(aBitmap);
-#if defined LINUX || defined FREEBSD
- // 24 bit Bitmap on SVP backend uses 32bit BGRA format
- CPPUNIT_ASSERT_EQUAL(static_cast<sal_uInt16>(32),
pReadAccess->GetBitCount());
- CPPUNIT_ASSERT_EQUAL(sal_uLong(40), pReadAccess->GetScanlineSize());
-#else
+ // 24 bit Bitmap on SVP backend can now use 24bit RGB instad of 32bit
BGRA format.
CPPUNIT_ASSERT_EQUAL(static_cast<sal_uInt16>(24),
pReadAccess->GetBitCount());
-#if defined(_WIN32)
- if (!OpenGLHelper::isVCLOpenGLEnabled())
- {
- // GDI Scanlines padded to DWORD multiples, it seems
- CPPUNIT_ASSERT_EQUAL(sal_uLong(32),
pReadAccess->GetScanlineSize());
- }
- else
-#endif
- {
- CPPUNIT_ASSERT_EQUAL(sal_uLong(30),
pReadAccess->GetScanlineSize());
- }
-#endif
+
+ // Scanlines padded to DWORD multiples, it seems
+ CPPUNIT_ASSERT_EQUAL(sal_uLong(32), pReadAccess->GetScanlineSize());
+
CPPUNIT_ASSERT(!pReadAccess->HasPalette());
Color aColor = pReadAccess->GetPixel(0, 0);
CPPUNIT_ASSERT_EQUAL(sal_Int32(204), sal_Int32(aColor.GetRed()));
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