diff options
| author | Adrian Perez de Castro <aperez@igalia.com> | 2013-01-18 21:06:24 +0200 |
|---|---|---|
| committer | The Qt Project <gerrit-noreply@qt-project.org> | 2014-03-06 17:41:04 +0100 |
| commit | 8f17d622b0f719973fb405705087f8a36c1f0739 (patch) | |
| tree | 410d05a42006453f827a48c825f9f3e66d3ce523 /src/gui/image/qimage_mips_dspr2.cpp | |
| parent | bc84e7cd436e81563191ec546109391678794537 (diff) | |
MIPS: Fast path for rgb888 to rgb32 conversion
Add a hand-coded MIPS assembler function to convert a stream of rgb888
bytes to an array of 32-bit ARGB values. This is used in QImage for
image conversion, and also in QJpegHandler for decoding JPEG image
scanlines.
Change-Id: Ia74a5ff799b29fad3d4acbfcafe790cd60586d72
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Diffstat (limited to 'src/gui/image/qimage_mips_dspr2.cpp')
| -rw-r--r-- | src/gui/image/qimage_mips_dspr2.cpp | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/src/gui/image/qimage_mips_dspr2.cpp b/src/gui/image/qimage_mips_dspr2.cpp index a1c40a16df..f61a2262d2 100644 --- a/src/gui/image/qimage_mips_dspr2.cpp +++ b/src/gui/image/qimage_mips_dspr2.cpp @@ -66,4 +66,24 @@ bool convert_ARGB_to_ARGB_PM_inplace_mips_dspr2(QImageData *data, Qt::ImageConve return true; } +extern "C" void qt_convert_rgb888_to_rgb32_mips_dspr2_asm(uint *dst, const uchar *src, int len); + +void convert_RGB888_to_RGB32_mips_dspr2(QImageData *dest, const QImageData *src, Qt::ImageConversionFlags) +{ + Q_ASSERT(src->format == QImage::Format_RGB888); + Q_ASSERT(dest->format == QImage::Format_RGB32 || dest->format == QImage::Format_ARGB32 || dest->format == QImage::Format_ARGB32_Premultiplied); + Q_ASSERT(src->width == dest->width); + Q_ASSERT(src->height == dest->height); + + const uchar *src_data = (const uchar*) src->data; + quint32 *dest_data = (quint32*) dest->data; + + for (int i = 0; i < src->height; ++i) { + qt_convert_rgb888_to_rgb32_mips_dspr2_asm(dest_data, src_data, src->width); + src_data += src->bytes_per_line; + dest_data = (quint32*) ((uchar*) dest_data + dest->bytes_per_line); + } +} + QT_END_NAMESPACE + |