Merge branch '4.7' of scm.dev.nokia.troll.no:qt/oslo-staging-2 into 4.7-integration

* '4.7' of scm.dev.nokia.troll.no:qt/oslo-staging-2:
  Add the qt_ prefix to convert_rgb888_to_rgb32_ssse3
  Update changes-4.7.0
  Use the fast conversion from RGB888 to RGB32 for Jpeg images
  Move the SIMD defines to the common declaration of Qt symbols
  Fixed: QT_DEPRECATED_WARNINGS defines QT3_SUPPORT

2 files changed, 26 insertions, 8 deletions

diff --git a/src/gui/image/qimage_ssse3.cpp b/src/gui/image/qimage_ssse3.cpp
index 1c664f2..9aed011 100644
--- a/src/gui/image/qimage_ssse3.cpp
+++ b/src/gui/image/qimage_ssse3.cpp
@@ -45,13 +45,12 @@
 
 #ifdef QT_HAVE_SSSE3
 
-#include <stdio.h>
 QT_BEGIN_NAMESPACE
 
 // Convert a scanline of RGB888 (src) to RGB32 (dst)
 // src must be at least len * 3 bytes
 // dst must be at least len * 4 bytes
-inline void convert_rgb888_to_rgb32_ssse3(quint32 *dst, const uchar *src, int len)
+Q_GUI_EXPORT void QT_FASTCALL qt_convert_rgb888_to_rgb32_ssse3(quint32 *dst, const uchar *src, int len)
 {
     quint32 *const end = dst + len;
 
@@ -139,7 +138,7 @@ void convert_RGB888_to_RGB32_ssse3(QImageData *dest, const QImageData *src, Qt::
     quint32 *dest_data = (quint32 *) dest->data;
 
     for (int i = 0; i < src->height; ++i) {
-        convert_rgb888_to_rgb32_ssse3(dest_data, src_data, src->width);
+        qt_convert_rgb888_to_rgb32_ssse3(dest_data, src_data, src->width);
         src_data += src->bytes_per_line;
         dest_data = (quint32 *)((uchar*)dest_data + dest->bytes_per_line);
     }
diff --git a/src/gui/image/qjpeghandler.cpp b/src/gui/image/qjpeghandler.cpp
index 972dd65..d358a5e 100644
--- a/src/gui/image/qjpeghandler.cpp
+++ b/src/gui/image/qjpeghandler.cpp
@@ -45,6 +45,7 @@
 #include <qvariant.h>
 #include <qvector.h>
 #include <qbuffer.h>
+#include <private/qsimd_p.h>
 
 #include <stdio.h>      // jpeglib needs this to be pre-included
 #include <setjmp.h>
@@ -75,6 +76,19 @@ extern "C" {
 
 QT_BEGIN_NAMESPACE
 
+void QT_FASTCALL convert_rgb888_to_rgb32_C(quint32 *dst, const uchar *src, int len)
+{
+    // Expand 24->32 bpp.
+    for (int i = 0; i < len; ++i) {
+        *dst++ = qRgb(src[0], src[1], src[2]);
+        src += 3;
+    }
+}
+
+typedef void (QT_FASTCALL *Rgb888ToRgb32Converter)(quint32 *dst, const uchar *src, int len);
+
+static Rgb888ToRgb32Converter rgb888ToRgb32ConverterPtr = convert_rgb888_to_rgb32_C;
+
 struct my_error_mgr : public jpeg_error_mgr {
     jmp_buf setjmp_buffer;
 };
@@ -393,13 +407,9 @@ static bool read_jpeg_image(QImage *outImage,
                     continue;   // Haven't reached the starting line yet.
 
                 if (info->output_components == 3) {
-                    // Expand 24->32 bpp.
                     uchar *in = rows[0] + clip.x() * 3;
                     QRgb *out = (QRgb*)outImage->scanLine(y);
-                    for (int i = 0; i < clip.width(); ++i) {
-                        *out++ = qRgb(in[0], in[1], in[2]);
-                        in += 3;
-                    }
+                    rgb888ToRgb32ConverterPtr(out, in, clip.width());
                 } else if (info->out_color_space == JCS_CMYK) {
                     // Convert CMYK->RGB.
                     uchar *in = rows[0] + clip.x() * 4;
@@ -793,6 +803,15 @@ bool QJpegHandlerPrivate::read(QImage *image)
 QJpegHandler::QJpegHandler()
     : d(new QJpegHandlerPrivate(this))
 {
+#if defined(QT_HAVE_SSSE3)
+    const uint features = qDetectCPUFeatures();
+
+    // from qimage_ssse3.cpp
+    Q_GUI_EXPORT void QT_FASTCALL qt_convert_rgb888_to_rgb32_ssse3(quint32 *dst, const uchar *src, int len);
+
+    if (features & SSSE3)
+        rgb888ToRgb32ConverterPtr = qt_convert_rgb888_to_rgb32_ssse3;
+#endif // QT_HAVE_SSSE3
 }
 
 QJpegHandler::~QJpegHandler()