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: #include "SkUtils.h"
michael@0: 
michael@0: #if DSTSIZE==32
michael@0:     #define DSTTYPE SkPMColor
michael@0: #elif DSTSIZE==16
michael@0:     #define DSTTYPE uint16_t
michael@0: #else
michael@0:     #error "need DSTSIZE to be 32 or 16"
michael@0: #endif
michael@0: 
michael@0: #if (DSTSIZE == 32)
michael@0:     #define BITMAPPROC_MEMSET(ptr, value, n) sk_memset32(ptr, value, n)
michael@0: #elif (DSTSIZE == 16)
michael@0:     #define BITMAPPROC_MEMSET(ptr, value, n) sk_memset16(ptr, value, n)
michael@0: #else
michael@0:     #error "unsupported DSTSIZE"
michael@0: #endif
michael@0: 
michael@0: 
michael@0: // declare functions externally to suppress warnings.
michael@0: void MAKENAME(_nofilter_DXDY)(const SkBitmapProcState& s,
michael@0:                               const uint32_t* SK_RESTRICT xy,
michael@0:                               int count, DSTTYPE* SK_RESTRICT colors);
michael@0: void MAKENAME(_nofilter_DX)(const SkBitmapProcState& s,
michael@0:                             const uint32_t* SK_RESTRICT xy,
michael@0:                             int count, DSTTYPE* SK_RESTRICT colors);
michael@0: void MAKENAME(_filter_DX)(const SkBitmapProcState& s,
michael@0:                           const uint32_t* SK_RESTRICT xy,
michael@0:                            int count, DSTTYPE* SK_RESTRICT colors);
michael@0: void MAKENAME(_filter_DXDY)(const SkBitmapProcState& s,
michael@0:                             const uint32_t* SK_RESTRICT xy,
michael@0:                             int count, DSTTYPE* SK_RESTRICT colors);
michael@0: 
michael@0: void MAKENAME(_nofilter_DXDY)(const SkBitmapProcState& s,
michael@0:                               const uint32_t* SK_RESTRICT xy,
michael@0:                               int count, DSTTYPE* SK_RESTRICT colors) {
michael@0:     SkASSERT(count > 0 && colors != NULL);
michael@0:     SkASSERT(SkPaint::kNone_FilterLevel == s.fFilterLevel);
michael@0:     SkDEBUGCODE(CHECKSTATE(s);)
michael@0: 
michael@0: #ifdef PREAMBLE
michael@0:     PREAMBLE(s);
michael@0: #endif
michael@0:     const char* SK_RESTRICT srcAddr = (const char*)s.fBitmap->getPixels();
michael@0:     size_t rb = s.fBitmap->rowBytes();
michael@0: 
michael@0:     uint32_t XY;
michael@0:     SRCTYPE src;
michael@0: 
michael@0:     for (int i = (count >> 1); i > 0; --i) {
michael@0:         XY = *xy++;
michael@0:         SkASSERT((XY >> 16) < (unsigned)s.fBitmap->height() &&
michael@0:                  (XY & 0xFFFF) < (unsigned)s.fBitmap->width());
michael@0:         src = ((const SRCTYPE*)(srcAddr + (XY >> 16) * rb))[XY & 0xFFFF];
michael@0:         *colors++ = RETURNDST(src);
michael@0: 
michael@0:         XY = *xy++;
michael@0:         SkASSERT((XY >> 16) < (unsigned)s.fBitmap->height() &&
michael@0:                  (XY & 0xFFFF) < (unsigned)s.fBitmap->width());
michael@0:         src = ((const SRCTYPE*)(srcAddr + (XY >> 16) * rb))[XY & 0xFFFF];
michael@0:         *colors++ = RETURNDST(src);
michael@0:     }
michael@0:     if (count & 1) {
michael@0:         XY = *xy++;
michael@0:         SkASSERT((XY >> 16) < (unsigned)s.fBitmap->height() &&
michael@0:                  (XY & 0xFFFF) < (unsigned)s.fBitmap->width());
michael@0:         src = ((const SRCTYPE*)(srcAddr + (XY >> 16) * rb))[XY & 0xFFFF];
michael@0:         *colors++ = RETURNDST(src);
michael@0:     }
michael@0: 
michael@0: #ifdef POSTAMBLE
michael@0:     POSTAMBLE(s);
michael@0: #endif
michael@0: }
michael@0: 
michael@0: void MAKENAME(_nofilter_DX)(const SkBitmapProcState& s,
michael@0:                             const uint32_t* SK_RESTRICT xy,
michael@0:                             int count, DSTTYPE* SK_RESTRICT colors) {
michael@0:     SkASSERT(count > 0 && colors != NULL);
michael@0:     SkASSERT(s.fInvType <= (SkMatrix::kTranslate_Mask | SkMatrix::kScale_Mask));
michael@0:     SkASSERT(SkPaint::kNone_FilterLevel == s.fFilterLevel);
michael@0:     SkDEBUGCODE(CHECKSTATE(s);)
michael@0: 
michael@0: #ifdef PREAMBLE
michael@0:     PREAMBLE(s);
michael@0: #endif
michael@0:     const SRCTYPE* SK_RESTRICT srcAddr = (const SRCTYPE*)s.fBitmap->getPixels();
michael@0: 
michael@0:     // buffer is y32, x16, x16, x16, x16, x16
michael@0:     // bump srcAddr to the proper row, since we're told Y never changes
michael@0:     SkASSERT((unsigned)xy[0] < (unsigned)s.fBitmap->height());
michael@0:     srcAddr = (const SRCTYPE*)((const char*)srcAddr +
michael@0:                                                 xy[0] * s.fBitmap->rowBytes());
michael@0:     xy += 1;
michael@0: 
michael@0:     SRCTYPE src;
michael@0: 
michael@0:     if (1 == s.fBitmap->width()) {
michael@0:         src = srcAddr[0];
michael@0:         DSTTYPE dstValue = RETURNDST(src);
michael@0:         BITMAPPROC_MEMSET(colors, dstValue, count);
michael@0:     } else {
michael@0:         int i;
michael@0:         for (i = (count >> 2); i > 0; --i) {
michael@0:             uint32_t xx0 = *xy++;
michael@0:             uint32_t xx1 = *xy++;
michael@0:             SRCTYPE x0 = srcAddr[UNPACK_PRIMARY_SHORT(xx0)];
michael@0:             SRCTYPE x1 = srcAddr[UNPACK_SECONDARY_SHORT(xx0)];
michael@0:             SRCTYPE x2 = srcAddr[UNPACK_PRIMARY_SHORT(xx1)];
michael@0:             SRCTYPE x3 = srcAddr[UNPACK_SECONDARY_SHORT(xx1)];
michael@0: 
michael@0:             *colors++ = RETURNDST(x0);
michael@0:             *colors++ = RETURNDST(x1);
michael@0:             *colors++ = RETURNDST(x2);
michael@0:             *colors++ = RETURNDST(x3);
michael@0:         }
michael@0:         const uint16_t* SK_RESTRICT xx = (const uint16_t*)(xy);
michael@0:         for (i = (count & 3); i > 0; --i) {
michael@0:             SkASSERT(*xx < (unsigned)s.fBitmap->width());
michael@0:             src = srcAddr[*xx++]; *colors++ = RETURNDST(src);
michael@0:         }
michael@0:     }
michael@0: 
michael@0: #ifdef POSTAMBLE
michael@0:     POSTAMBLE(s);
michael@0: #endif
michael@0: }
michael@0: 
michael@0: ///////////////////////////////////////////////////////////////////////////////
michael@0: 
michael@0: void MAKENAME(_filter_DX)(const SkBitmapProcState& s,
michael@0:                           const uint32_t* SK_RESTRICT xy,
michael@0:                            int count, DSTTYPE* SK_RESTRICT colors) {
michael@0:     SkASSERT(count > 0 && colors != NULL);
michael@0:     SkASSERT(s.fFilterLevel != SkPaint::kNone_FilterLevel);
michael@0:     SkDEBUGCODE(CHECKSTATE(s);)
michael@0: 
michael@0: #ifdef PREAMBLE
michael@0:     PREAMBLE(s);
michael@0: #endif
michael@0:     const char* SK_RESTRICT srcAddr = (const char*)s.fBitmap->getPixels();
michael@0:     size_t rb = s.fBitmap->rowBytes();
michael@0:     unsigned subY;
michael@0:     const SRCTYPE* SK_RESTRICT row0;
michael@0:     const SRCTYPE* SK_RESTRICT row1;
michael@0: 
michael@0:     // setup row ptrs and update proc_table
michael@0:     {
michael@0:         uint32_t XY = *xy++;
michael@0:         unsigned y0 = XY >> 14;
michael@0:         row0 = (const SRCTYPE*)(srcAddr + (y0 >> 4) * rb);
michael@0:         row1 = (const SRCTYPE*)(srcAddr + (XY & 0x3FFF) * rb);
michael@0:         subY = y0 & 0xF;
michael@0:     }
michael@0: 
michael@0:     do {
michael@0:         uint32_t XX = *xy++;    // x0:14 | 4 | x1:14
michael@0:         unsigned x0 = XX >> 14;
michael@0:         unsigned x1 = XX & 0x3FFF;
michael@0:         unsigned subX = x0 & 0xF;
michael@0:         x0 >>= 4;
michael@0: 
michael@0:         FILTER_PROC(subX, subY,
michael@0:                     SRC_TO_FILTER(row0[x0]),
michael@0:                     SRC_TO_FILTER(row0[x1]),
michael@0:                     SRC_TO_FILTER(row1[x0]),
michael@0:                     SRC_TO_FILTER(row1[x1]),
michael@0:                     colors);
michael@0:         colors += 1;
michael@0: 
michael@0:     } while (--count != 0);
michael@0: 
michael@0: #ifdef POSTAMBLE
michael@0:     POSTAMBLE(s);
michael@0: #endif
michael@0: }
michael@0: void MAKENAME(_filter_DXDY)(const SkBitmapProcState& s,
michael@0:                             const uint32_t* SK_RESTRICT xy,
michael@0:                             int count, DSTTYPE* SK_RESTRICT colors) {
michael@0:     SkASSERT(count > 0 && colors != NULL);
michael@0:     SkASSERT(s.fFilterLevel != SkPaint::kNone_FilterLevel);
michael@0:     SkDEBUGCODE(CHECKSTATE(s);)
michael@0: 
michael@0: #ifdef PREAMBLE
michael@0:         PREAMBLE(s);
michael@0: #endif
michael@0:     const char* SK_RESTRICT srcAddr = (const char*)s.fBitmap->getPixels();
michael@0:     size_t rb = s.fBitmap->rowBytes();
michael@0: 
michael@0:     do {
michael@0:         uint32_t data = *xy++;
michael@0:         unsigned y0 = data >> 14;
michael@0:         unsigned y1 = data & 0x3FFF;
michael@0:         unsigned subY = y0 & 0xF;
michael@0:         y0 >>= 4;
michael@0: 
michael@0:         data = *xy++;
michael@0:         unsigned x0 = data >> 14;
michael@0:         unsigned x1 = data & 0x3FFF;
michael@0:         unsigned subX = x0 & 0xF;
michael@0:         x0 >>= 4;
michael@0: 
michael@0:         const SRCTYPE* SK_RESTRICT row0 = (const SRCTYPE*)(srcAddr + y0 * rb);
michael@0:         const SRCTYPE* SK_RESTRICT row1 = (const SRCTYPE*)(srcAddr + y1 * rb);
michael@0: 
michael@0:         FILTER_PROC(subX, subY,
michael@0:                     SRC_TO_FILTER(row0[x0]),
michael@0:                     SRC_TO_FILTER(row0[x1]),
michael@0:                     SRC_TO_FILTER(row1[x0]),
michael@0:                     SRC_TO_FILTER(row1[x1]),
michael@0:                     colors);
michael@0:         colors += 1;
michael@0:     } while (--count != 0);
michael@0: 
michael@0: #ifdef POSTAMBLE
michael@0:     POSTAMBLE(s);
michael@0: #endif
michael@0: }
michael@0: 
michael@0: #undef MAKENAME
michael@0: #undef DSTSIZE
michael@0: #undef DSTTYPE
michael@0: #undef SRCTYPE
michael@0: #undef CHECKSTATE
michael@0: #undef RETURNDST
michael@0: #undef SRC_TO_FILTER
michael@0: #undef FILTER_TO_DST
michael@0: 
michael@0: #ifdef PREAMBLE
michael@0:     #undef PREAMBLE
michael@0: #endif
michael@0: #ifdef POSTAMBLE
michael@0:     #undef POSTAMBLE
michael@0: #endif
michael@0: 
michael@0: #undef FILTER_PROC_TYPE
michael@0: #undef GET_FILTER_TABLE
michael@0: #undef GET_FILTER_ROW
michael@0: #undef GET_FILTER_ROW_PROC
michael@0: #undef GET_FILTER_PROC
michael@0: #undef BITMAPPROC_MEMSET