mirror of
https://bitbucket.org/smil3y/kde-workspace.git
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574 lines
14 KiB
C++
574 lines
14 KiB
C++
/*
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* Copyright © 2008 Fredrik Höglund <fredrik@kde.org>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <QThread>
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#include <QWidget>
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#include <QPixmap>
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#include <QTimer>
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#include <QtGui/qx11info_x11.h>
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#include <QDebug>
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#include <solid/device.h>
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#include <solid/processor.h>
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#include <X11/Xlib.h>
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#include <X11/Xutil.h>
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#include <string>
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#if defined(__INTEL_COMPILER)
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# define HAVE_MMX
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# define HAVE_SSE2
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#elif defined(__GNUC__)
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# if defined(__MMX__)
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# define HAVE_MMX
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# endif
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# if defined(__SSE2__) && __GNUC__ > 3
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# define HAVE_SSE2
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# endif
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#endif
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#ifdef HAVE_MMX
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# include <mmintrin.h>
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#endif
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#ifdef HAVE_SSE2
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# include <emmintrin.h>
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#endif
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#include "fadeeffect.h"
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#include "moc_fadeeffect.cpp"
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#ifndef HAVE_SSE2
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static inline void *_mm_malloc(size_t size, int)
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{
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return malloc(size);
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}
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static inline void _mm_free(void *p)
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{
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free(p);
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}
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#endif
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static inline int multiply(int a, int b)
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{
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int res = a * b + 0x80;
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return (res + (res >> 8)) >> 8;
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}
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static inline void load(const quint32 src, int *r, int *g, int *b)
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{
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*r = (src >> 16) & 0xff;
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*g = (src >> 8) & 0xff;
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*b = src & 0xff;
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}
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static inline void load16(const quint16 src, int *r, int *g, int *b)
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{
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*r = ((src >> 8) & 0x00f8) | ((src >> 13) & 0x0007);
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*g = ((src >> 3) & 0x00fc) | ((src >> 9) & 0x0003);
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*b = ((src << 3) & 0x00f8) | ((src >> 2) & 0x0007);
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}
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static inline quint32 store(const int r, const int g, const int b)
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{
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return (r << 16) | (g << 8) | b | 0xff000000;
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}
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static inline quint16 store16(const int r, const int g, const int b)
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{
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return (((r << 8) | (b >> 3)) & 0xf81f) | ((g << 3) & 0x07e0);
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}
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static void scanline_blend(const quint32 *over, const quint8 alpha, const quint32 *under,
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quint32 *result, uint length)
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{
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for (uint i = 0; i < length; ++i)
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{
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int sr, sg, sb, dr, dg, db;
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load(over[i], &sr, &sg, &sb);
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load(under[i], &dr, &dg, &db);
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dr = multiply((sr - dr), alpha) + dr;
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dg = multiply((sg - dg), alpha) + dg;
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db = multiply((sb - db), alpha) + db;
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result[i] = store(dr, dg, db);
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}
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}
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static void scanline_blend_16(const quint16 *over, const quint8 alpha, const quint16 *under,
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quint16 *result, uint length)
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{
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for (uint i = 0; i < length; ++i)
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{
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int sr, sg, sb, dr, dg, db;
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load16(over[i], &sr, &sg, &sb);
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load16(under[i], &dr, &dg, &db);
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dr = multiply((sr - dr), alpha) + dr;
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dg = multiply((sg - dg), alpha) + dg;
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db = multiply((sb - db), alpha) + db;
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result[i] = store16(dr, dg, db);
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}
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}
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// ----------------------------------------------------------------------------
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#ifdef HAVE_MMX
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static inline __m64 multiply(const __m64 m1, const __m64 m2)
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{
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__m64 res = _mm_mullo_pi16(m1, m2);
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res = _mm_adds_pi16(res, _mm_set1_pi16 (0x0080));
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res = _mm_adds_pi16(res, _mm_srli_pi16 (res, 8));
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return _mm_srli_pi16(res, 8);
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}
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static inline __m64 add(const __m64 m1, const __m64 m2)
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{
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return _mm_adds_pi16(m1, m2);
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}
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static inline __m64 load(const quint32 pixel, const __m64 zero)
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{
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__m64 m = _mm_cvtsi32_si64(pixel);
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return _mm_unpacklo_pi8(m, zero);
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}
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static inline quint32 store(const __m64 pixel, const __m64 zero)
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{
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__m64 packed = _mm_packs_pu16(pixel, zero);
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return _mm_cvtsi64_si32(packed);
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}
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static void scanline_blend_mmx(const quint32 *over, const quint8 a, const quint32 *under,
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quint32 *result, uint length)
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{
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register const __m64 alpha = _mm_set1_pi16(quint16 (a));
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register const __m64 negalpha = _mm_xor_si64(alpha, _mm_set1_pi16 (0x00ff));
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register const __m64 zero = _mm_setzero_si64();
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for (uint i = 0; i < length; ++i)
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{
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__m64 src = load(over[i], zero);
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__m64 dst = load(under[i], zero);
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src = multiply(src, alpha);
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dst = multiply(dst, negalpha);
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dst = add(src, dst);
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result[i] = store(dst, zero);
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}
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_mm_empty();
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}
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#endif // HAVE_MMX
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// ----------------------------------------------------------------------------
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#ifdef HAVE_SSE2
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static inline __m128i multiply(const __m128i m1, const __m128i m2)
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{
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__m128i res = _mm_mullo_epi16(m1, m2);
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res = _mm_adds_epi16(res, _mm_set1_epi16 (0x0080));
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res = _mm_adds_epi16(res, _mm_srli_epi16 (res, 8));
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return _mm_srli_epi16(res, 8);
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}
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static inline __m128i add(const __m128i m1, const __m128i m2)
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{
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return _mm_adds_epi16(m1, m2);
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}
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static inline __m128i lower(__m128i m)
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{
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return _mm_unpacklo_epi8(m, _mm_setzero_si128 ());
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}
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static inline __m128i upper(__m128i m)
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{
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return _mm_unpackhi_epi8(m, _mm_setzero_si128 ());
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}
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void scanline_blend_sse2(const __m128i *over, const quint8 a, const __m128i *under,
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__m128i *result, uint length)
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{
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length = (length + 15) >> 4;
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register const __m128i alpha = _mm_set1_epi16(__uint16_t (a));
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register const __m128i negalpha = _mm_xor_si128(alpha, _mm_set1_epi16 (0x00ff));
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for (uint i = 0; i < length; i++)
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{
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__m128i squad = _mm_load_si128(over + i);
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__m128i dquad = _mm_load_si128(under + i);
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__m128i src1 = lower(squad);
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__m128i dst1 = lower(dquad);
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__m128i src2 = upper(squad);
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__m128i dst2 = upper(dquad);
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squad = add(multiply(src1, alpha), multiply(dst1, negalpha));
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dquad = add(multiply(src2, alpha), multiply(dst2, negalpha));
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dquad = _mm_packus_epi16(squad, dquad);
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_mm_store_si128(result + i, dquad);
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}
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}
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#endif // HAVE_SSE2
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// ----------------------------------------------------------------------------
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class BlendingThread : public QThread
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{
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public:
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BlendingThread(QObject *parent);
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~BlendingThread();
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void setImage(XImage *image);
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void setAlpha(int alpha) { m_alpha = alpha; }
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private:
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void toGray16(quint8 *data);
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void toGray32(quint8 *data);
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void blend16();
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void blend32();
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void blend32_mmx();
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void blend32_sse2();
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protected:
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void run();
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private:
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bool have_mmx;
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bool have_sse2;
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int m_alpha;
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XImage *m_image;
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quint8 *m_original;
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quint8 *m_final;
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};
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BlendingThread::BlendingThread(QObject *parent)
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: QThread(parent)
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{
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// Check if the CPU supports MMX and SSE2.
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// We only check the first CPU on an SMP system, and assume all CPU's support the same features.
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QList<Solid::Device> list = Solid::Device::listFromType(Solid::DeviceInterface::Processor, QString());
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if (list.size() > 0)
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{
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Solid::Processor::InstructionSets features = list[0].as<Solid::Processor>()->instructionSets();
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have_mmx = features & Solid::Processor::IntelMmx;
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have_sse2 = features & Solid::Processor::IntelSse2;
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}
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else
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{
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// Can happen if e.g. there is no usable backend for Solid. Err on the side of caution.
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// (c.f. bug:163112)
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have_mmx = false;
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have_sse2 = false;
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}
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m_final = NULL;
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m_original = NULL;
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}
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BlendingThread::~BlendingThread()
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{
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_mm_free(m_final);
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_mm_free(m_original);
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}
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void BlendingThread::setImage(XImage *image)
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{
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m_image = image;
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int size = m_image->bytes_per_line * m_image->height;
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// We need the data to be aligned on a 128 bit (16 byte) boundary for SSE2
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m_original = (quint8*) _mm_malloc(size, 16);
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m_final = (quint8*) _mm_malloc(size, 16);
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memcpy((void*)m_original, (const void*)m_image->data, size);
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memcpy((void*)m_final, (const void*)m_image->data, size);
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if (m_image->depth > 16) {
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// Make sure that the alpha channel is initialized to 0xff
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for (int y = 0; y < image->height; y++) {
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quint32 *pixels = (quint32*)(m_original + (m_image->bytes_per_line * y));
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for (int x = 0; x < image->width; x++)
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pixels[x] |= 0xff000000;
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}
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}
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if (m_image->depth != 16)
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toGray32(m_final);
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else
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toGray16(m_final);
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}
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void BlendingThread::toGray16(quint8 *data)
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{
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for (int y = 0; y < m_image->height; y++)
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{
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quint16 *pixels = (quint16*)(data + (m_image->bytes_per_line * y));
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for (int x = 0; x < m_image->width; x++)
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{
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int red, green, blue;
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load16(pixels[x], &red, &green, &blue);
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// Make sure the 3 least significant bits are 0, so the red, green and blue
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// channels really have the same value when packed in a 5/6/5 representation.
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int val = int(red * .299 + green * .587 + blue * .114) & 0xf8;
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pixels[x] = store16(val, val, val);
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}
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}
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}
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void BlendingThread::toGray32(quint8 *data)
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{
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for (int y = 0; y < m_image->height; y++)
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{
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quint32 *pixels = (quint32*)(data + (m_image->bytes_per_line * y));
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for (int x = 0; x < m_image->width; x++)
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{
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int red, green, blue;
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load(pixels[x], &red, &green, &blue);
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int val = int(red * .299 + green * .587 + blue * .114);
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pixels[x] = store(val, val, val);
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}
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}
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}
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void BlendingThread::blend16()
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{
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for (int y = 0; y < m_image->height; y++)
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{
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uint start = m_image->bytes_per_line * y;
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quint16 *over = (quint16*)(m_original + start);
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quint16 *under = (quint16*)(m_final + start);
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quint16 *result = (quint16*)(m_image->data + start);
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scanline_blend_16(over, m_alpha, under, result, m_image->width);
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}
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}
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void BlendingThread::blend32()
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{
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for (int y = 0; y < m_image->height; y++)
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{
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int start = m_image->bytes_per_line * y;
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quint32 *over = (quint32*)(m_original + start);
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quint32 *under = (quint32*)(m_final + start);
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quint32 *result = (quint32*)(m_image->data + start);
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scanline_blend(over, m_alpha, under, result, m_image->width);
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}
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}
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void BlendingThread::blend32_mmx()
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{
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#ifdef HAVE_MMX
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for (int y = 0; y < m_image->height; y++)
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{
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int start = m_image->bytes_per_line * y;
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quint32 *over = (quint32*)(m_original + start);
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quint32 *under = (quint32*)(m_final + start);
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quint32 *result = (quint32*)(m_image->data + start);
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scanline_blend_mmx(over, m_alpha, under, result, m_image->width);
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}
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#endif
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}
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void BlendingThread::blend32_sse2()
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{
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#ifdef HAVE_SSE2
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uint length = m_image->bytes_per_line * m_image->height;
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__m128i *over = (__m128i*)(m_original);
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__m128i *under = (__m128i*)(m_final);
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__m128i *result = (__m128i*)(m_image->data);
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scanline_blend_sse2(over, m_alpha, under, result, length);
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#endif
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}
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void BlendingThread::run()
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{
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if (m_image->depth != 16)
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{
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#ifdef HAVE_SSE2
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if (have_sse2)
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blend32_sse2();
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else
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#endif
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#ifdef HAVE_MMX
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if (have_mmx)
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blend32_mmx();
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else
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#endif
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blend32();
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}
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else
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blend16();
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}
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// ----------------------------------------------------------------------------
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FadeEffect::FadeEffect(QWidget *parent, QPixmap *pixmap)
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: LogoutEffect(parent, pixmap), blender(NULL)
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{
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Display *dpy = parent->x11Info().display();
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image = XCreateImage(dpy, (Visual*)pixmap->x11Info().visual(), pixmap->depth(),
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ZPixmap, 0, NULL, pixmap->width(), pixmap->height(), 32, 0);
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// Allocate the image data on 16 byte boundary for SSE2
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image->data = (char*)_mm_malloc(image->bytes_per_line * image->height, 16);
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gc = XCreateGC(dpy, pixmap->handle(), 0, NULL);
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blender = new BlendingThread(this);
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currentY = 0;
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}
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FadeEffect::~FadeEffect()
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{
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blender->wait();
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_mm_free(image->data);
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image->data = NULL;
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XDestroyImage(image);
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XFreeGC(QX11Info::display(), gc);
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}
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void FadeEffect::start()
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{
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done = false;
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alpha = 255;
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// Start by grabbing the screenshot
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grabImageSection();
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}
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void FadeEffect::grabImageSection()
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{
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const int sectionHeight = 64;
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int h = (currentY + sectionHeight > image->height) ? image->height - currentY : sectionHeight;
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XGetSubImage(QX11Info::display(), QX11Info::appRootWindow(), 0, currentY, image->width, h,
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AllPlanes, ZPixmap, image, 0, currentY);
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// Continue until we have the whole image
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currentY += sectionHeight;
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if (currentY < image->height)
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{
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QTimer::singleShot(1, this, SLOT(grabImageSection()));
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return;
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}
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// Let the owner know we're done.
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emit initialized();
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// Start the fade effect
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blender->setImage(image);
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blender->setAlpha(alpha);
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|
blender->start();
|
|
time.start();
|
|
|
|
QTimer::singleShot(10, this, SLOT(nextFrame()));
|
|
}
|
|
|
|
|
|
void FadeEffect::nextFrame()
|
|
{
|
|
const qreal runTime = 2000; // milliseconds
|
|
|
|
if (!blender->isFinished())
|
|
{
|
|
QTimer::singleShot(10, this, SLOT(nextFrame()));
|
|
return;
|
|
}
|
|
|
|
XPutImage(QX11Info::display(), pixmap->handle(), gc, image, 0, 0, 0, 0, image->width, image->height);
|
|
parent->update();
|
|
|
|
alpha = qRound(qMax(255. - (255. * (qreal(time.elapsed() / runTime))), 0.0));
|
|
|
|
if (!done)
|
|
{
|
|
blender->setAlpha(alpha);
|
|
blender->start();
|
|
|
|
// Make sure we don't send frames faster than the X server can process them
|
|
XSync(QX11Info::display(), False);
|
|
QTimer::singleShot(1, this, SLOT(nextFrame()));
|
|
}
|
|
|
|
if (alpha == 0)
|
|
done = true;
|
|
}
|
|
|