michael@0: 
michael@0: /*
michael@0:  * Copyright 2011 Google Inc.
michael@0:  *
michael@0:  * Use of this source code is governed by a BSD-style license that can be
michael@0:  * found in the LICENSE file.
michael@0:  */
michael@0: 
michael@0: // Define NAME_WRAP(x) before including this header to perform name-wrapping
michael@0: // E.g. for ARM NEON, defined it as 'x ## _neon' to ensure all important
michael@0: // identifiers have a _neon suffix.
michael@0: #ifndef NAME_WRAP
michael@0: #error "Please define NAME_WRAP() before including this file"
michael@0: #endif
michael@0: 
michael@0: // returns expanded * 5bits
michael@0: static inline uint32_t Filter_565_Expanded(unsigned x, unsigned y,
michael@0:                                            uint32_t a00, uint32_t a01,
michael@0:                                            uint32_t a10, uint32_t a11) {
michael@0:     SkASSERT((unsigned)x <= 0xF);
michael@0:     SkASSERT((unsigned)y <= 0xF);
michael@0: 
michael@0:     a00 = SkExpand_rgb_16(a00);
michael@0:     a01 = SkExpand_rgb_16(a01);
michael@0:     a10 = SkExpand_rgb_16(a10);
michael@0:     a11 = SkExpand_rgb_16(a11);
michael@0: 
michael@0:     int xy = x * y >> 3;
michael@0:     return  a00 * (32 - 2*y - 2*x + xy) +
michael@0:             a01 * (2*x - xy) +
michael@0:             a10 * (2*y - xy) +
michael@0:             a11 * xy;
michael@0: }
michael@0: 
michael@0: // turn an expanded 565 * 5bits into SkPMColor
michael@0: // g:11 | r:10 | x:1 | b:10
michael@0: static inline SkPMColor SkExpanded_565_To_PMColor(uint32_t c) {
michael@0:     unsigned r = (c >> 13) & 0xFF;
michael@0:     unsigned g = (c >> 24);
michael@0:     unsigned b = (c >> 2) & 0xFF;
michael@0:     return SkPackARGB32(0xFF, r, g, b);
michael@0: }
michael@0: 
michael@0: // returns answer in SkPMColor format
michael@0: static inline SkPMColor Filter_4444_D32(unsigned x, unsigned y,
michael@0:                                         uint32_t a00, uint32_t a01,
michael@0:                                         uint32_t a10, uint32_t a11) {
michael@0:     SkASSERT((unsigned)x <= 0xF);
michael@0:     SkASSERT((unsigned)y <= 0xF);
michael@0: 
michael@0:     a00 = SkExpand_4444(a00);
michael@0:     a01 = SkExpand_4444(a01);
michael@0:     a10 = SkExpand_4444(a10);
michael@0:     a11 = SkExpand_4444(a11);
michael@0: 
michael@0:     int xy = x * y >> 4;
michael@0:     uint32_t result =   a00 * (16 - y - x + xy) +
michael@0:                         a01 * (x - xy) +
michael@0:                         a10 * (y - xy) +
michael@0:                         a11 * xy;
michael@0: 
michael@0:     return SkCompact_8888(result);
michael@0: }
michael@0: 
michael@0: static inline U8CPU Filter_8(unsigned x, unsigned y,
michael@0:                              U8CPU a00, U8CPU a01,
michael@0:                              U8CPU a10, U8CPU a11) {
michael@0:     SkASSERT((unsigned)x <= 0xF);
michael@0:     SkASSERT((unsigned)y <= 0xF);
michael@0: 
michael@0:     int xy = x * y;
michael@0:     unsigned result =   a00 * (256 - 16*y - 16*x + xy) +
michael@0:                         a01 * (16*x - xy) +
michael@0:                         a10 * (16*y - xy) +
michael@0:                         a11 * xy;
michael@0: 
michael@0:     return result >> 8;
michael@0: }
michael@0: 
michael@0: /*****************************************************************************
michael@0:  *
michael@0:  *  D32 functions
michael@0:  *
michael@0:  */
michael@0: 
michael@0: // SRC == 8888
michael@0: 
michael@0: #define FILTER_PROC(x, y, a, b, c, d, dst)   NAME_WRAP(Filter_32_opaque)(x, y, a, b, c, d, dst)
michael@0: 
michael@0: #define MAKENAME(suffix)        NAME_WRAP(S32_opaque_D32 ## suffix)
michael@0: #define DSTSIZE                 32
michael@0: #define SRCTYPE                 SkPMColor
michael@0: #define CHECKSTATE(state)       SkASSERT(state.fBitmap->config() == SkBitmap::kARGB_8888_Config); \
michael@0:                                 SkASSERT(state.fAlphaScale == 256)
michael@0: #define RETURNDST(src)          src
michael@0: #define SRC_TO_FILTER(src)      src
michael@0: #include "SkBitmapProcState_sample.h"
michael@0: 
michael@0: #undef FILTER_PROC
michael@0: #define FILTER_PROC(x, y, a, b, c, d, dst)   NAME_WRAP(Filter_32_alpha)(x, y, a, b, c, d, dst, alphaScale)
michael@0: 
michael@0: #define MAKENAME(suffix)        NAME_WRAP(S32_alpha_D32 ## suffix)
michael@0: #define DSTSIZE                 32
michael@0: #define SRCTYPE                 SkPMColor
michael@0: #define CHECKSTATE(state)       SkASSERT(state.fBitmap->config() == SkBitmap::kARGB_8888_Config); \
michael@0:                                 SkASSERT(state.fAlphaScale < 256)
michael@0: #define PREAMBLE(state)         unsigned alphaScale = state.fAlphaScale
michael@0: #define RETURNDST(src)          SkAlphaMulQ(src, alphaScale)
michael@0: #define SRC_TO_FILTER(src)      src
michael@0: #include "SkBitmapProcState_sample.h"
michael@0: 
michael@0: // SRC == 565
michael@0: 
michael@0: #undef FILTER_PROC
michael@0: #define FILTER_PROC(x, y, a, b, c, d, dst) \
michael@0:     do {                                                        \
michael@0:         uint32_t tmp = Filter_565_Expanded(x, y, a, b, c, d);   \
michael@0:         *(dst) = SkExpanded_565_To_PMColor(tmp);                \
michael@0:     } while (0)
michael@0: 
michael@0: #define MAKENAME(suffix)        NAME_WRAP(S16_opaque_D32 ## suffix)
michael@0: #define DSTSIZE                 32
michael@0: #define SRCTYPE                 uint16_t
michael@0: #define CHECKSTATE(state)       SkASSERT(state.fBitmap->config() == SkBitmap::kRGB_565_Config); \
michael@0:                                 SkASSERT(state.fAlphaScale == 256)
michael@0: #define RETURNDST(src)          SkPixel16ToPixel32(src)
michael@0: #define SRC_TO_FILTER(src)      src
michael@0: #include "SkBitmapProcState_sample.h"
michael@0: 
michael@0: #undef FILTER_PROC
michael@0: #define FILTER_PROC(x, y, a, b, c, d, dst) \
michael@0:     do {                                                                    \
michael@0:         uint32_t tmp = Filter_565_Expanded(x, y, a, b, c, d);               \
michael@0:         *(dst) = SkAlphaMulQ(SkExpanded_565_To_PMColor(tmp), alphaScale);   \
michael@0:     } while (0)
michael@0: 
michael@0: #define MAKENAME(suffix)        NAME_WRAP(S16_alpha_D32 ## suffix)
michael@0: #define DSTSIZE                 32
michael@0: #define SRCTYPE                 uint16_t
michael@0: #define CHECKSTATE(state)       SkASSERT(state.fBitmap->config() == SkBitmap::kRGB_565_Config); \
michael@0:                                 SkASSERT(state.fAlphaScale < 256)
michael@0: #define PREAMBLE(state)         unsigned alphaScale = state.fAlphaScale
michael@0: #define RETURNDST(src)          SkAlphaMulQ(SkPixel16ToPixel32(src), alphaScale)
michael@0: #define SRC_TO_FILTER(src)      src
michael@0: #include "SkBitmapProcState_sample.h"
michael@0: 
michael@0: // SRC == Index8
michael@0: 
michael@0: #undef FILTER_PROC
michael@0: #define FILTER_PROC(x, y, a, b, c, d, dst)   NAME_WRAP(Filter_32_opaque)(x, y, a, b, c, d, dst)
michael@0: 
michael@0: #define MAKENAME(suffix)        NAME_WRAP(SI8_opaque_D32 ## suffix)
michael@0: #define DSTSIZE                 32
michael@0: #define SRCTYPE                 uint8_t
michael@0: #define CHECKSTATE(state)       SkASSERT(state.fBitmap->config() == SkBitmap::kIndex8_Config); \
michael@0:                                 SkASSERT(state.fAlphaScale == 256)
michael@0: #define PREAMBLE(state)         const SkPMColor* SK_RESTRICT table = state.fBitmap->getColorTable()->lockColors()
michael@0: #define RETURNDST(src)          table[src]
michael@0: #define SRC_TO_FILTER(src)      table[src]
michael@0: #define POSTAMBLE(state)        state.fBitmap->getColorTable()->unlockColors()
michael@0: #include "SkBitmapProcState_sample.h"
michael@0: 
michael@0: #undef FILTER_PROC
michael@0: #define FILTER_PROC(x, y, a, b, c, d, dst)   NAME_WRAP(Filter_32_alpha)(x, y, a, b, c, d, dst, alphaScale)
michael@0: 
michael@0: #define MAKENAME(suffix)        NAME_WRAP(SI8_alpha_D32 ## suffix)
michael@0: #define DSTSIZE                 32
michael@0: #define SRCTYPE                 uint8_t
michael@0: #define CHECKSTATE(state)       SkASSERT(state.fBitmap->config() == SkBitmap::kIndex8_Config); \
michael@0:                                 SkASSERT(state.fAlphaScale < 256)
michael@0: #define PREAMBLE(state)         unsigned alphaScale = state.fAlphaScale; \
michael@0:                                 const SkPMColor* SK_RESTRICT table = state.fBitmap->getColorTable()->lockColors()
michael@0: #define RETURNDST(src)          SkAlphaMulQ(table[src], alphaScale)
michael@0: #define SRC_TO_FILTER(src)      table[src]
michael@0: #define POSTAMBLE(state)        state.fBitmap->getColorTable()->unlockColors()
michael@0: #include "SkBitmapProcState_sample.h"
michael@0: 
michael@0: // SRC == 4444
michael@0: 
michael@0: #undef FILTER_PROC
michael@0: #define FILTER_PROC(x, y, a, b, c, d, dst)  *(dst) = Filter_4444_D32(x, y, a, b, c, d)
michael@0: 
michael@0: #define MAKENAME(suffix)        NAME_WRAP(S4444_opaque_D32 ## suffix)
michael@0: #define DSTSIZE                 32
michael@0: #define SRCTYPE                 SkPMColor16
michael@0: #define CHECKSTATE(state)       SkASSERT(state.fBitmap->config() == SkBitmap::kARGB_4444_Config); \
michael@0:                                 SkASSERT(state.fAlphaScale == 256)
michael@0: #define RETURNDST(src)          SkPixel4444ToPixel32(src)
michael@0: #define SRC_TO_FILTER(src)      src
michael@0: #include "SkBitmapProcState_sample.h"
michael@0: 
michael@0: #undef FILTER_PROC
michael@0: #define FILTER_PROC(x, y, a, b, c, d, dst)  \
michael@0:     do {                                                    \
michael@0:         uint32_t tmp = Filter_4444_D32(x, y, a, b, c, d);   \
michael@0:         *(dst) = SkAlphaMulQ(tmp, alphaScale);              \
michael@0:     } while (0)
michael@0: 
michael@0: #define MAKENAME(suffix)        NAME_WRAP(S4444_alpha_D32 ## suffix)
michael@0: #define DSTSIZE                 32
michael@0: #define SRCTYPE                 SkPMColor16
michael@0: #define CHECKSTATE(state)       SkASSERT(state.fBitmap->config() == SkBitmap::kARGB_4444_Config); \
michael@0:                                 SkASSERT(state.fAlphaScale < 256)
michael@0: #define PREAMBLE(state)         unsigned alphaScale = state.fAlphaScale
michael@0: #define RETURNDST(src)          SkAlphaMulQ(SkPixel4444ToPixel32(src), alphaScale)
michael@0: #define SRC_TO_FILTER(src)      src
michael@0: #include "SkBitmapProcState_sample.h"
michael@0: 
michael@0: // SRC == A8
michael@0: 
michael@0: #undef FILTER_PROC
michael@0: #define FILTER_PROC(x, y, a, b, c, d, dst) \
michael@0:     do {                                                        \
michael@0:         unsigned tmp = Filter_8(x, y, a, b, c, d);              \
michael@0:         *(dst) = SkAlphaMulQ(pmColor, SkAlpha255To256(tmp));    \
michael@0:     } while (0)
michael@0: 
michael@0: #define MAKENAME(suffix)        NAME_WRAP(SA8_alpha_D32 ## suffix)
michael@0: #define DSTSIZE                 32
michael@0: #define SRCTYPE                 uint8_t
michael@0: #define CHECKSTATE(state)       SkASSERT(state.fBitmap->config() == SkBitmap::kA8_Config);
michael@0: #define PREAMBLE(state)         const SkPMColor pmColor = state.fPaintPMColor;
michael@0: #define RETURNDST(src)          SkAlphaMulQ(pmColor, SkAlpha255To256(src))
michael@0: #define SRC_TO_FILTER(src)      src
michael@0: #include "SkBitmapProcState_sample.h"
michael@0: 
michael@0: /*****************************************************************************
michael@0:  *
michael@0:  *  D16 functions
michael@0:  *
michael@0:  */
michael@0: 
michael@0: // SRC == 8888
michael@0: 
michael@0: #undef FILTER_PROC
michael@0: #define FILTER_PROC(x, y, a, b, c, d, dst) \
michael@0:     do {                                                \
michael@0:         SkPMColor dstColor;                             \
michael@0:         NAME_WRAP(Filter_32_opaque)(x, y, a, b, c, d, &dstColor);  \
michael@0:         (*dst) = SkPixel32ToPixel16(dstColor);          \
michael@0:     } while (0)
michael@0: 
michael@0: #define MAKENAME(suffix)        NAME_WRAP(S32_D16 ## suffix)
michael@0: #define DSTSIZE                 16
michael@0: #define SRCTYPE                 SkPMColor
michael@0: #define CHECKSTATE(state)       SkASSERT(state.fBitmap->config() == SkBitmap::kARGB_8888_Config); \
michael@0:                                 SkASSERT(state.fBitmap->isOpaque())
michael@0: #define RETURNDST(src)          SkPixel32ToPixel16(src)
michael@0: #define SRC_TO_FILTER(src)      src
michael@0: #include "SkBitmapProcState_sample.h"
michael@0: 
michael@0: // SRC == 565
michael@0: 
michael@0: #undef FILTER_PROC
michael@0: #define FILTER_PROC(x, y, a, b, c, d, dst) \
michael@0:     do {                                                        \
michael@0:         uint32_t tmp = Filter_565_Expanded(x, y, a, b, c, d);   \
michael@0:         *(dst) = SkCompact_rgb_16((tmp) >> 5);                  \
michael@0:     } while (0)
michael@0: 
michael@0: #define MAKENAME(suffix)        NAME_WRAP(S16_D16 ## suffix)
michael@0: #define DSTSIZE                 16
michael@0: #define SRCTYPE                 uint16_t
michael@0: #define CHECKSTATE(state)       SkASSERT(state.fBitmap->config() == SkBitmap::kRGB_565_Config)
michael@0: #define RETURNDST(src)          src
michael@0: #define SRC_TO_FILTER(src)      src
michael@0: #include "SkBitmapProcState_sample.h"
michael@0: 
michael@0: // SRC == Index8
michael@0: 
michael@0: #undef FILTER_PROC
michael@0: #define FILTER_PROC(x, y, a, b, c, d, dst) \
michael@0:     do {                                                        \
michael@0:         uint32_t tmp = Filter_565_Expanded(x, y, a, b, c, d);   \
michael@0:         *(dst) = SkCompact_rgb_16((tmp) >> 5);                  \
michael@0:     } while (0)
michael@0: 
michael@0: #define MAKENAME(suffix)        NAME_WRAP(SI8_D16 ## suffix)
michael@0: #define DSTSIZE                 16
michael@0: #define SRCTYPE                 uint8_t
michael@0: #define CHECKSTATE(state)       SkASSERT(state.fBitmap->config() == SkBitmap::kIndex8_Config); \
michael@0:                                 SkASSERT(state.fBitmap->isOpaque())
michael@0: #define PREAMBLE(state)         const uint16_t* SK_RESTRICT table = state.fBitmap->getColorTable()->lock16BitCache()
michael@0: #define RETURNDST(src)          table[src]
michael@0: #define SRC_TO_FILTER(src)      table[src]
michael@0: #define POSTAMBLE(state)        state.fBitmap->getColorTable()->unlock16BitCache()
michael@0: #include "SkBitmapProcState_sample.h"
michael@0: 
michael@0: ///////////////////////////////////////////////////////////////////////////////
michael@0: 
michael@0: #undef FILTER_PROC
michael@0: #define FILTER_PROC(x, y, a, b, c, d, dst) \
michael@0:     do {                                                        \
michael@0:         uint32_t tmp = Filter_565_Expanded(x, y, a, b, c, d);   \
michael@0:         *(dst) = SkCompact_rgb_16((tmp) >> 5);                  \
michael@0:     } while (0)
michael@0: 
michael@0: 
michael@0: // clamp
michael@0: 
michael@0: #define TILEX_PROCF(fx, max)    SkClampMax((fx) >> 16, max)
michael@0: #define TILEY_PROCF(fy, max)    SkClampMax((fy) >> 16, max)
michael@0: #define TILEX_LOW_BITS(fx, max) (((fx) >> 12) & 0xF)
michael@0: #define TILEY_LOW_BITS(fy, max) (((fy) >> 12) & 0xF)
michael@0: 
michael@0: #define MAKENAME(suffix)        NAME_WRAP(Clamp_S16_D16 ## suffix)
michael@0: #define SRCTYPE                 uint16_t
michael@0: #define DSTTYPE                 uint16_t
michael@0: #define CHECKSTATE(state)       SkASSERT(state.fBitmap->config() == SkBitmap::kRGB_565_Config)
michael@0: #define SRC_TO_FILTER(src)      src
michael@0: #include "SkBitmapProcState_shaderproc.h"
michael@0: 
michael@0: 
michael@0: #define TILEX_PROCF(fx, max)    (((fx) & 0xFFFF) * ((max) + 1) >> 16)
michael@0: #define TILEY_PROCF(fy, max)    (((fy) & 0xFFFF) * ((max) + 1) >> 16)
michael@0: #define TILEX_LOW_BITS(fx, max) ((((fx) & 0xFFFF) * ((max) + 1) >> 12) & 0xF)
michael@0: #define TILEY_LOW_BITS(fy, max) ((((fy) & 0xFFFF) * ((max) + 1) >> 12) & 0xF)
michael@0: 
michael@0: #define MAKENAME(suffix)        NAME_WRAP(Repeat_S16_D16 ## suffix)
michael@0: #define SRCTYPE                 uint16_t
michael@0: #define DSTTYPE                 uint16_t
michael@0: #define CHECKSTATE(state)       SkASSERT(state.fBitmap->config() == SkBitmap::kRGB_565_Config)
michael@0: #define SRC_TO_FILTER(src)      src
michael@0: #include "SkBitmapProcState_shaderproc.h"
michael@0: 
michael@0: 
michael@0: #define TILEX_PROCF(fx, max)    SkClampMax((fx) >> 16, max)
michael@0: #define TILEY_PROCF(fy, max)    SkClampMax((fy) >> 16, max)
michael@0: #define TILEX_LOW_BITS(fx, max) (((fx) >> 12) & 0xF)
michael@0: #define TILEY_LOW_BITS(fy, max) (((fy) >> 12) & 0xF)
michael@0: 
michael@0: #undef FILTER_PROC
michael@0: #define FILTER_PROC(x, y, a, b, c, d, dst)   NAME_WRAP(Filter_32_opaque)(x, y, a, b, c, d, dst)
michael@0: #define MAKENAME(suffix)        NAME_WRAP(Clamp_SI8_opaque_D32 ## suffix)
michael@0: #define SRCTYPE                 uint8_t
michael@0: #define DSTTYPE                 uint32_t
michael@0: #define CHECKSTATE(state)       SkASSERT(state.fBitmap->config() == SkBitmap::kIndex8_Config)
michael@0: #define PREAMBLE(state)         const SkPMColor* SK_RESTRICT table = state.fBitmap->getColorTable()->lockColors()
michael@0: #define SRC_TO_FILTER(src)      table[src]
michael@0: #define POSTAMBLE(state)        state.fBitmap->getColorTable()->unlockColors()
michael@0: #include "SkBitmapProcState_shaderproc.h"
michael@0: 
michael@0: #undef NAME_WRAP