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-rw-r--r--src/gui/painting/qdrawhelper_arm_simd.cpp332
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diff --git a/src/gui/painting/qdrawhelper_arm_simd.cpp b/src/gui/painting/qdrawhelper_arm_simd.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qdrawhelper_arm_simd_p.h"
+
+#include <private/qpaintengine_raster_p.h>
+#include <private/qblendfunctions_p.h>
+
+#ifdef QT_HAVE_ARM_SIMD
+
+#if defined(Q_OS_SYMBIAN)
+#if !defined(__SWITCH_TO_ARM)
+#ifdef __MARM_THUMB__
+#ifndef __ARMCC__
+#define __SWITCH_TO_ARM asm("push {r0} ");\
+ asm("add r0, pc, #4 ");\
+ asm("bx r0 ");\
+ asm("nop ");\
+ asm(".align 2 ");\
+ asm(".code 32 ");\
+ asm("ldr r0, [sp], #4 ")
+#define __END_ARM asm(".code 16 ")
+#else
+#define __SWITCH_TO_ARM asm(".code 32 ");
+#define __END_ARM
+#endif // __ARMCC__
+#else
+#define __SWITCH_TO_ARM
+#define __END_ARM
+#endif //__MARM_THUMB__
+#endif
+#endif
+
+#if defined(Q_OS_SYMBIAN) && defined(Q_CC_RVCT)
+__asm void qt_blend_argb32_on_argb32_arm_simd(uchar *destPixels, int dbpl,
+ const uchar *srcPixels, int sbpl,
+ int w, int h,
+ int const_alpha)
+{
+#ifndef __ARMCC__
+ __SWITCH_TO_ARM;
+#else
+ CODE32
+#endif // __ARMCC__
+
+ stmfd sp!, {r4-r12, r14}
+
+ // read arguments off the stack
+ add r8, sp, #10 * 4
+ ldmia r8, {r4-r6}
+
+ // adjust dbpl and sbpl
+ mov r14, #4
+ mul r14, r4, r14
+ sub r1, r1, r14
+ sub r3, r3, r14
+
+ // load 0xFF00FF00 to r12
+ mov r12, #0xFF000000
+ add r12, r12, #0xFF00
+
+ // load 0x800080 to r14
+ mov r14, #0x800000
+ add r14, r14, #0x80
+
+ /*
+ Registers:
+ r0 dst
+ r1 dbpl
+ r2 src
+ r3 sbpl
+ r4 w
+ r5 h
+ r6 const_alpha
+ r12 0xFF0000
+ r14 0x800080
+ */
+
+ cmp r6, #256 //test if we have fully opaque constant alpha value
+ bne argb32constalpha // branch if not
+
+argb32_next_row
+
+ mov r7, r4
+
+argb32_next_pixel
+
+ ldr r8, [r2], #4 // load src pixel
+
+ // Negate r8 and extract src alpha
+ mvn r11, r8 // bitwise not
+ uxtb r11, r11, ror #24
+
+ cmp r11, #0 // test for full src opacity (negated)
+ beq argb32_no_blend
+
+ cmp r11, #255 // test for full src transparency (negated)
+ addeq r0, #4
+ beq argb32_nop
+
+ ldr r9, [r0] // load dst pixel
+
+ // blend
+ uxtb16 r10, r9
+ uxtb16 r6, r9, ror #8
+ mla r10, r11, r10, r14
+ mla r9, r6, r11, r14
+ uxtab16 r10, r10, r10, ror #8
+ uxtab16 r9, r9, r9, ror #8
+ and r9, r9, r12
+ uxtab16 r10, r9, r10, ror #8
+
+ uqadd8 r8, r10, r8
+
+argb32_no_blend
+
+ str r8, [r0], #4
+
+argb32_nop
+
+ subs r7, r7, #1
+ bgt argb32_next_pixel
+
+ add r0, r0, r1 // dest = dest + dbpl
+ add r2, r2, r3 // src = src + sbpl
+
+ subs r5, r5, #1
+ bgt argb32_next_row
+
+ b argb32_blend_exit
+
+argb32constalpha
+
+ cmp r6, #0
+ beq argb32_blend_exit
+
+ ; const_alpha = (const_alpha * 255) >> 8;
+ mov r11, #255
+ mul r6, r6, r11
+ mov r11, r6, lsr #8
+
+argb32constalpha_next_row
+
+ mov r7, r4
+
+argb32constalpha_next_pixel
+
+ ldr r9, [r2], #4 // load src pixel
+
+ // blend
+ uxtb16 r10, r9
+ uxtb16 r6, r9, ror #8
+ mla r10, r11, r10, r14
+ mla r9, r6, r11, r14
+ uxtab16 r10, r10, r10, ror #8
+ uxtab16 r9, r9, r9, ror #8
+ and r9, r9, r12
+ uxtab16 r8, r9, r10, ror #8
+
+ ldr r9, [r0] // load dst pixel
+
+ // blend
+ uxtb16 r10, r9
+ uxtb16 r6, r9, ror #8
+
+ // Negate r8 and extract src alpha
+ mvn r9, r8 // bitwise not
+ uxtb r9, r9, ror #24
+
+ mla r10, r9, r10, r14
+ mla r9, r6, r9, r14
+ uxtab16 r10, r10, r10, ror #8
+ uxtab16 r9, r9, r9, ror #8
+ and r9, r9, r12
+ uxtab16 r10, r9, r10, ror #8
+
+ uqadd8 r8, r10, r8
+
+ str r8, [r0], #4
+
+ subs r7, r7, #1
+ bgt argb32constalpha_next_pixel
+
+ add r0, r0, r1 // dest = dest + dbpl
+ add r2, r2, r3 // src = src + sbpl
+
+ subs r5, r5, #1
+ bgt argb32constalpha_next_row
+
+argb32_blend_exit
+
+ // Restore registers
+ ldmfd sp!, {r4-r12, lr}
+ bx lr
+
+ __END_ARM
+}
+
+void qt_blend_rgb32_on_rgb32_arm_simd(uchar *destPixels, int dbpl,
+ const uchar *srcPixels, int sbpl,
+ int w, int h,
+ int const_alpha)
+{
+ if (const_alpha != 256) {
+ qt_blend_argb32_on_argb32_arm_simd(destPixels, dbpl, srcPixels, sbpl, w, h, const_alpha);
+ return;
+ }
+
+ const uint *src = (const uint *) srcPixels;
+ uint *dst = (uint *) destPixels;
+ if (w <= 64) {
+ for (int y=0; y<h; ++y) {
+ qt_memconvert(dst, src, w);
+ dst = (quint32 *)(((uchar *) dst) + dbpl);
+ src = (const quint32 *)(((const uchar *) src) + sbpl);
+ }
+ } else {
+ int len = w * 4;
+ for (int y=0; y<h; ++y) {
+ memcpy(dst, src, len);
+ dst = (quint32 *)(((uchar *) dst) + dbpl);
+ src = (const quint32 *)(((const uchar *) src) + sbpl);
+ }
+ }
+}
+
+#else // defined(Q_OS_SYMBIAN) && defined(Q_CC_RVCT)
+
+// TODO: add GNU assembler instructions and support for other platforms.
+// Default to C code for now
+
+void qt_blend_argb32_on_argb32_arm_simd(uchar *destPixels, int dbpl,
+ const uchar *srcPixels, int sbpl,
+ int w, int h,
+ int const_alpha)
+{
+ const uint *src = (const uint *) srcPixels;
+ uint *dst = (uint *) destPixels;
+ if (const_alpha == 256) {
+ for (int y=0; y<h; ++y) {
+ for (int x=0; x<w; ++x) {
+ uint s = src[x];
+ if (s >= 0xff000000)
+ dst[x] = s;
+ else if (s != 0)
+ dst[x] = s + BYTE_MUL(dst[x], qAlpha(~s));
+ }
+ dst = (quint32 *)(((uchar *) dst) + dbpl);
+ src = (const quint32 *)(((const uchar *) src) + sbpl);
+ }
+ } else if (const_alpha != 0) {
+ const_alpha = (const_alpha * 255) >> 8;
+ for (int y=0; y<h; ++y) {
+ for (int x=0; x<w; ++x) {
+ uint s = BYTE_MUL(src[x], const_alpha);
+ dst[x] = s + BYTE_MUL(dst[x], qAlpha(~s));
+ }
+ dst = (quint32 *)(((uchar *) dst) + dbpl);
+ src = (const quint32 *)(((const uchar *) src) + sbpl);
+ }
+ }
+}
+
+void qt_blend_rgb32_on_rgb32_arm_simd(uchar *destPixels, int dbpl,
+ const uchar *srcPixels, int sbpl,
+ int w, int h,
+ int const_alpha)
+{
+ if (const_alpha != 256) {
+ qt_blend_argb32_on_argb32_arm_simd(destPixels, dbpl, srcPixels, sbpl, w, h, const_alpha);
+ return;
+ }
+
+ const uint *src = (const uint *) srcPixels;
+ uint *dst = (uint *) destPixels;
+ if (w <= 64) {
+ for (int y=0; y<h; ++y) {
+ qt_memconvert(dst, src, w);
+ dst = (quint32 *)(((uchar *) dst) + dbpl);
+ src = (const quint32 *)(((const uchar *) src) + sbpl);
+ }
+ } else {
+ int len = w * 4;
+ for (int y=0; y<h; ++y) {
+ memcpy(dst, src, len);
+ dst = (quint32 *)(((uchar *) dst) + dbpl);
+ src = (const quint32 *)(((const uchar *) src) + sbpl);
+ }
+ }
+}
+
+#endif
+
+#endif // QT_HAVE_ARMV_SIMD
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