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// Copyright 2014 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
#include "../../../include/fxge/fx_dib.h"
#include "../../../include/fxge/fx_ge.h"
#include "../../../include/fxcodec/fx_codec.h"
#include "dib_int.h"
#include <limits.h>
FX_BOOL ConvertBuffer(FXDIB_Format dest_format, FX_LPBYTE dest_buf, int dest_pitch, int width, int height,
const CFX_DIBSource* pSrcBitmap, int src_left, int src_top, FX_DWORD*& pal, void* pIccTransform);
void CmykDecode(FX_DWORD cmyk, int& c, int& m, int& y, int& k)
{
c = FXSYS_GetCValue(cmyk);
m = FXSYS_GetMValue(cmyk);
y = FXSYS_GetYValue(cmyk);
k = FXSYS_GetKValue(cmyk);
}
void ArgbDecode(FX_DWORD argb, int& a, int& r, int& g, int& b)
{
a = FXARGB_A(argb);
r = FXARGB_R(argb);
g = FXARGB_G(argb);
b = FXARGB_B(argb);
}
void ArgbDecode(FX_DWORD argb, int& a, FX_COLORREF& rgb)
{
a = FXARGB_A(argb);
rgb = FXSYS_RGB(FXARGB_R(argb), FXARGB_G(argb), FXARGB_B(argb));
}
FX_DWORD ArgbEncode(int a, FX_COLORREF rgb)
{
return FXARGB_MAKE(a, FXSYS_GetRValue(rgb), FXSYS_GetGValue(rgb), FXSYS_GetBValue(rgb));
}
CFX_DIBSource::CFX_DIBSource()
{
m_bpp = 0;
m_AlphaFlag = 0;
m_Width = m_Height = 0;
m_Pitch = 0;
m_pPalette = NULL;
m_pAlphaMask = NULL;
}
CFX_DIBSource::~CFX_DIBSource()
{
if (m_pPalette) {
FX_Free(m_pPalette);
}
if (m_pAlphaMask) {
delete m_pAlphaMask;
}
}
CFX_DIBitmap::CFX_DIBitmap()
{
m_bExtBuf = FALSE;
m_pBuffer = NULL;
m_pPalette = NULL;
}
#define _MAX_OOM_LIMIT_ 12000000
FX_BOOL CFX_DIBitmap::Create(int width, int height, FXDIB_Format format, FX_LPBYTE pBuffer, int pitch)
{
m_pBuffer = NULL;
m_bpp = (FX_BYTE)format;
m_AlphaFlag = (FX_BYTE)(format >> 8);
m_Width = m_Height = m_Pitch = 0;
if (width <= 0 || height <= 0 || pitch < 0) {
return FALSE;
}
if ((INT_MAX - 31) / width < (format & 0xff)) {
return FALSE;
}
if (!pitch) {
pitch = (width * (format & 0xff) + 31) / 32 * 4;
}
if ((1 << 30) / pitch < height) {
return FALSE;
}
if (pBuffer) {
m_pBuffer = pBuffer;
m_bExtBuf = TRUE;
} else {
int size = pitch * height + 4;
int oomlimit = _MAX_OOM_LIMIT_;
if (oomlimit >= 0 && size >= oomlimit) {
m_pBuffer = FX_AllocNL(FX_BYTE, size);
} else {
m_pBuffer = FX_Alloc(FX_BYTE, size);
}
if (m_pBuffer == NULL) {
return FALSE;
}
FXSYS_memset32(m_pBuffer, 0, sizeof (FX_BYTE) * size);
}
m_Width = width;
m_Height = height;
m_Pitch = pitch;
if (HasAlpha() && format != FXDIB_Argb) {
FX_BOOL ret = TRUE;
ret = BuildAlphaMask();
if (!ret) {
if (!m_bExtBuf && m_pBuffer) {
FX_Free(m_pBuffer);
m_pBuffer = NULL;
m_Width = m_Height = m_Pitch = 0;
return FALSE;
}
}
}
return TRUE;
}
FX_BOOL CFX_DIBitmap::Copy(const CFX_DIBSource* pSrc)
{
if (m_pBuffer) {
return FALSE;
}
if (!Create(pSrc->GetWidth(), pSrc->GetHeight(), pSrc->GetFormat())) {
return FALSE;
}
CopyPalette(pSrc->GetPalette());
CopyAlphaMask(pSrc->m_pAlphaMask);
for (int row = 0; row < pSrc->GetHeight(); row ++) {
FXSYS_memcpy32(m_pBuffer + row * m_Pitch, pSrc->GetScanline(row), m_Pitch);
}
return TRUE;
}
CFX_DIBitmap::~CFX_DIBitmap()
{
if (m_pBuffer && !m_bExtBuf) {
FX_Free(m_pBuffer);
}
m_pBuffer = NULL;
}
void CFX_DIBitmap::TakeOver(CFX_DIBitmap* pSrcBitmap)
{
if (m_pBuffer && !m_bExtBuf) {
FX_Free(m_pBuffer);
}
if (m_pPalette) {
FX_Free(m_pPalette);
}
if (m_pAlphaMask) {
delete m_pAlphaMask;
}
m_pBuffer = pSrcBitmap->m_pBuffer;
m_pPalette = pSrcBitmap->m_pPalette;
m_pAlphaMask = pSrcBitmap->m_pAlphaMask;
pSrcBitmap->m_pBuffer = NULL;
pSrcBitmap->m_pPalette = NULL;
pSrcBitmap->m_pAlphaMask = NULL;
m_bpp = pSrcBitmap->m_bpp;
m_bExtBuf = pSrcBitmap->m_bExtBuf;
m_AlphaFlag = pSrcBitmap->m_AlphaFlag;
m_Width = pSrcBitmap->m_Width;
m_Height = pSrcBitmap->m_Height;
m_Pitch = pSrcBitmap->m_Pitch;
}
CFX_DIBitmap* CFX_DIBSource::Clone(const FX_RECT* pClip) const
{
FX_RECT rect(0, 0, m_Width, m_Height);
if (pClip) {
rect.Intersect(*pClip);
if (rect.IsEmpty()) {
return NULL;
}
}
CFX_DIBitmap* pNewBitmap = FX_NEW CFX_DIBitmap;
if (!pNewBitmap) {
return NULL;
}
if (!pNewBitmap->Create(rect.Width(), rect.Height(), GetFormat())) {
delete pNewBitmap;
return NULL;
}
pNewBitmap->CopyPalette(m_pPalette);
pNewBitmap->CopyAlphaMask(m_pAlphaMask, pClip);
if (GetBPP() == 1 && rect.left % 8 != 0) {
int left_shift = rect.left % 32;
int right_shift = 32 - left_shift;
int dword_count = pNewBitmap->m_Pitch / 4;
for (int row = rect.top; row < rect.bottom; row ++) {
FX_DWORD* src_scan = (FX_DWORD*)GetScanline(row) + rect.left / 32;
FX_DWORD* dest_scan = (FX_DWORD*)pNewBitmap->GetScanline(row - rect.top);
for (int i = 0; i < dword_count; i ++) {
dest_scan[i] = (src_scan[i] << left_shift) | (src_scan[i + 1] >> right_shift);
}
}
} else {
int copy_len = (pNewBitmap->GetWidth() * pNewBitmap->GetBPP() + 7) / 8;
if (m_Pitch < (FX_DWORD)copy_len) {
copy_len = m_Pitch;
}
for (int row = rect.top; row < rect.bottom; row ++) {
FX_LPCBYTE src_scan = GetScanline(row) + rect.left * m_bpp / 8;
FX_LPBYTE dest_scan = (FX_LPBYTE)pNewBitmap->GetScanline(row - rect.top);
FXSYS_memcpy32(dest_scan, src_scan, copy_len);
}
}
return pNewBitmap;
}
void CFX_DIBSource::BuildPalette()
{
if (m_pPalette) {
return;
}
if (GetBPP() == 1) {
m_pPalette = FX_Alloc(FX_DWORD, 2);
if (!m_pPalette) {
return;
}
if(IsCmykImage()) {
m_pPalette[0] = 0xff;
m_pPalette[1] = 0;
} else {
m_pPalette[0] = 0xff000000;
m_pPalette[1] = 0xffffffff;
}
} else if (GetBPP() == 8) {
m_pPalette = FX_Alloc(FX_DWORD, 256);
if (!m_pPalette) {
return;
}
if(IsCmykImage()) {
for (int i = 0; i < 256; i ++) {
m_pPalette[i] = 0xff - i;
}
} else {
for (int i = 0; i < 256; i ++) {
m_pPalette[i] = 0xff000000 | (i * 0x10101);
}
}
}
}
FX_BOOL CFX_DIBSource::BuildAlphaMask()
{
if (m_pAlphaMask) {
return TRUE;
}
m_pAlphaMask = FX_NEW CFX_DIBitmap;
if (!m_pAlphaMask) {
return FALSE;
}
if (!m_pAlphaMask->Create(m_Width, m_Height, FXDIB_8bppMask)) {
delete m_pAlphaMask;
m_pAlphaMask = NULL;
return FALSE;
}
FXSYS_memset8(m_pAlphaMask->GetBuffer(), 0xff, m_pAlphaMask->GetHeight()*m_pAlphaMask->GetPitch());
return TRUE;
}
FX_DWORD CFX_DIBSource::GetPaletteEntry(int index) const
{
ASSERT((GetBPP() == 1 || GetBPP() == 8) && !IsAlphaMask());
if (m_pPalette) {
return m_pPalette[index];
}
if (IsCmykImage()) {
if (GetBPP() == 1) {
return index ? 0 : 0xff;
}
return 0xff - index;
}
if (GetBPP() == 1) {
return index ? 0xffffffff : 0xff000000;
}
return index * 0x10101 | 0xff000000;
}
void CFX_DIBSource::SetPaletteEntry(int index, FX_DWORD color)
{
ASSERT((GetBPP() == 1 || GetBPP() == 8) && !IsAlphaMask());
if (m_pPalette == NULL) {
BuildPalette();
}
m_pPalette[index] = color;
}
int CFX_DIBSource::FindPalette(FX_DWORD color) const
{
ASSERT((GetBPP() == 1 || GetBPP() == 8) && !IsAlphaMask());
if (m_pPalette == NULL) {
if (IsCmykImage()) {
if (GetBPP() == 1) {
return ((FX_BYTE)color == 0xff) ? 0 : 1;
}
return 0xff - (FX_BYTE)color;
}
if (GetBPP() == 1) {
return ((FX_BYTE)color == 0xff) ? 1 : 0;
}
return (FX_BYTE)color;
}
int palsize = (1 << GetBPP());
for (int i = 0; i < palsize; i ++)
if (m_pPalette[i] == color) {
return i;
}
return -1;
}
void CFX_DIBitmap::Clear(FX_DWORD color)
{
if (m_pBuffer == NULL) {
return;
}
switch (GetFormat()) {
case FXDIB_1bppMask:
FXSYS_memset8(m_pBuffer, (color & 0xff000000) ? 0xff : 0, m_Pitch * m_Height);
break;
case FXDIB_1bppRgb: {
int index = FindPalette(color);
FXSYS_memset8(m_pBuffer, index ? 0xff : 0, m_Pitch * m_Height);
break;
}
case FXDIB_8bppMask:
FXSYS_memset8(m_pBuffer, color >> 24, m_Pitch * m_Height);
break;
case FXDIB_8bppRgb: {
int index = FindPalette(color);
FXSYS_memset8(m_pBuffer, index, m_Pitch * m_Height);
break;
}
case FXDIB_Rgb:
case FXDIB_Rgba: {
int a, r, g, b;
ArgbDecode(color, a, r, g, b);
if (r == g && g == b) {
FXSYS_memset8(m_pBuffer, r, m_Pitch * m_Height);
} else {
int byte_pos = 0;
for (int col = 0; col < m_Width; col ++) {
m_pBuffer[byte_pos++] = b;
m_pBuffer[byte_pos++] = g;
m_pBuffer[byte_pos++] = r;
}
for (int row = 1; row < m_Height; row ++) {
FXSYS_memcpy32(m_pBuffer + row * m_Pitch, m_pBuffer, m_Pitch);
}
}
break;
}
case FXDIB_Rgb32:
case FXDIB_Argb: {
color = IsCmykImage() ? FXCMYK_TODIB(color) : FXARGB_TODIB(color);
for (int i = 0; i < m_Width; i ++) {
((FX_DWORD*)m_pBuffer)[i] = color;
}
for (int row = 1; row < m_Height; row ++) {
FXSYS_memcpy32(m_pBuffer + row * m_Pitch, m_pBuffer, m_Pitch);
}
break;
}
default:
break;
}
}
void CFX_DIBSource::GetOverlapRect(int& dest_left, int& dest_top, int& width, int& height,
int src_width, int src_height, int& src_left, int& src_top,
const CFX_ClipRgn* pClipRgn)
{
if (width == 0 || height == 0) {
return;
}
ASSERT(width > 0 && height > 0);
if (dest_left > m_Width || dest_top > m_Height) {
width = 0;
height = 0;
return;
}
int x_offset = dest_left - src_left;
int y_offset = dest_top - src_top;
FX_RECT src_rect(src_left, src_top, src_left + width, src_top + height);
FX_RECT src_bound(0, 0, src_width, src_height);
src_rect.Intersect(src_bound);
FX_RECT dest_rect(src_rect.left + x_offset, src_rect.top + y_offset,
src_rect.right + x_offset, src_rect.bottom + y_offset);
FX_RECT dest_bound(0, 0, m_Width, m_Height);
dest_rect.Intersect(dest_bound);
if (pClipRgn) {
dest_rect.Intersect(pClipRgn->GetBox());
}
dest_left = dest_rect.left;
dest_top = dest_rect.top;
src_left = dest_left - x_offset;
src_top = dest_top - y_offset;
width = dest_rect.right - dest_rect.left;
height = dest_rect.bottom - dest_rect.top;
}
FX_BOOL CFX_DIBitmap::TransferBitmap(int dest_left, int dest_top, int width, int height,
const CFX_DIBSource* pSrcBitmap, int src_left, int src_top, void* pIccTransform)
{
if (m_pBuffer == NULL) {
return FALSE;
}
GetOverlapRect(dest_left, dest_top, width, height, pSrcBitmap->GetWidth(), pSrcBitmap->GetHeight(), src_left, src_top, NULL);
if (width == 0 || height == 0) {
return TRUE;
}
FXDIB_Format dest_format = GetFormat();
FXDIB_Format src_format = pSrcBitmap->GetFormat();
if (dest_format == src_format && pIccTransform == NULL) {
if (GetBPP() == 1) {
for (int row = 0; row < height; row ++) {
FX_LPBYTE dest_scan = m_pBuffer + (dest_top + row) * m_Pitch;
FX_LPCBYTE src_scan = pSrcBitmap->GetScanline(src_top + row);
for (int col = 0; col < width; col ++) {
if (src_scan[(src_left + col) / 8] & (1 << (7 - (src_left + col) % 8))) {
dest_scan[(dest_left + col) / 8] |= 1 << (7 - (dest_left + col) % 8);
} else {
dest_scan[(dest_left + col) / 8] &= ~(1 << (7 - (dest_left + col) % 8));
}
}
}
} else {
int Bpp = GetBPP() / 8;
for (int row = 0; row < height; row ++) {
FX_LPBYTE dest_scan = m_pBuffer + (dest_top + row) * m_Pitch + dest_left * Bpp;
FX_LPCBYTE src_scan = pSrcBitmap->GetScanline(src_top + row) + src_left * Bpp;
FXSYS_memcpy32(dest_scan, src_scan, width * Bpp);
}
}
} else {
if (m_pPalette) {
return FALSE;
}
if (m_bpp == 8) {
dest_format = FXDIB_8bppMask;
}
FX_LPBYTE dest_buf = m_pBuffer + dest_top * m_Pitch + dest_left * GetBPP() / 8;
FX_DWORD* d_plt = NULL;
if(!ConvertBuffer(dest_format, dest_buf, m_Pitch, width, height, pSrcBitmap, src_left, src_top, d_plt, pIccTransform)) {
return FALSE;
}
}
return TRUE;
}
#ifndef _FPDFAPI_MINI_
FX_BOOL CFX_DIBitmap::TransferMask(int dest_left, int dest_top, int width, int height,
const CFX_DIBSource* pMask, FX_DWORD color, int src_left, int src_top, int alpha_flag, void* pIccTransform)
{
if (m_pBuffer == NULL) {
return FALSE;
}
ASSERT(HasAlpha() && (m_bpp >= 24));
ASSERT(pMask->IsAlphaMask());
if (!HasAlpha() || !pMask->IsAlphaMask() || m_bpp < 24) {
return FALSE;
}
GetOverlapRect(dest_left, dest_top, width, height, pMask->GetWidth(), pMask->GetHeight(), src_left, src_top, NULL);
if (width == 0 || height == 0) {
return TRUE;
}
int src_pitch = pMask->GetPitch();
int src_bpp = pMask->GetBPP();
int alpha;
FX_DWORD dst_color;
if (alpha_flag >> 8) {
alpha = alpha_flag & 0xff;
dst_color = FXCMYK_TODIB(color);
} else {
alpha = FXARGB_A(color);
dst_color = FXARGB_TODIB(color);
}
FX_LPBYTE color_p = (FX_LPBYTE)&dst_color;
if (pIccTransform && CFX_GEModule::Get()->GetCodecModule() && CFX_GEModule::Get()->GetCodecModule()->GetIccModule()) {
ICodec_IccModule* pIccModule = CFX_GEModule::Get()->GetCodecModule()->GetIccModule();
pIccModule->TranslateScanline(pIccTransform, color_p, color_p, 1);
} else {
if (alpha_flag >> 8 && !IsCmykImage())
AdobeCMYK_to_sRGB1(FXSYS_GetCValue(color), FXSYS_GetMValue(color), FXSYS_GetYValue(color), FXSYS_GetKValue(color),
color_p[2], color_p[1], color_p[0]);
else if (!(alpha_flag >> 8) && IsCmykImage()) {
return FALSE;
}
}
if(!IsCmykImage()) {
color_p[3] = (FX_BYTE)alpha;
}
if (GetFormat() == FXDIB_Argb) {
for (int row = 0; row < height; row ++) {
FX_DWORD* dest_pos = (FX_DWORD*)(m_pBuffer + (dest_top + row) * m_Pitch + dest_left * 4);
FX_LPCBYTE src_scan = pMask->GetScanline(src_top + row);
if (src_bpp == 1) {
for (int col = 0; col < width; col ++) {
int src_bitpos = src_left + col;
if (src_scan[src_bitpos / 8] & (1 << (7 - src_bitpos % 8))) {
*dest_pos = dst_color;
} else {
*dest_pos = 0;
}
dest_pos ++;
}
} else {
src_scan += src_left;
dst_color = FXARGB_TODIB(dst_color);
dst_color &= 0xffffff;
for (int col = 0; col < width; col ++) {
FXARGB_SETDIB(dest_pos++, dst_color | ((alpha * (*src_scan++) / 255) << 24));
}
}
}
} else {
int comps = m_bpp / 8;
for (int row = 0; row < height; row ++) {
FX_LPBYTE dest_color_pos = m_pBuffer + (dest_top + row) * m_Pitch + dest_left * comps;
FX_LPBYTE dest_alpha_pos = (FX_LPBYTE)m_pAlphaMask->GetScanline(dest_top + row) + dest_left;
FX_LPCBYTE src_scan = pMask->GetScanline(src_top + row);
if (src_bpp == 1) {
for (int col = 0; col < width; col ++) {
int src_bitpos = src_left + col;
if (src_scan[src_bitpos / 8] & (1 << (7 - src_bitpos % 8))) {
FXSYS_memcpy32(dest_color_pos, color_p, comps);
*dest_alpha_pos = 0xff;
} else {
FXSYS_memset32(dest_color_pos, 0, comps);
*dest_alpha_pos = 0;
}
dest_color_pos += comps;
dest_alpha_pos ++;
}
} else {
src_scan += src_left;
for (int col = 0; col < width; col ++) {
FXSYS_memcpy32(dest_color_pos, color_p, comps);
dest_color_pos += comps;
*dest_alpha_pos++ = (alpha * (*src_scan++) / 255);
}
}
}
}
return TRUE;
}
#endif
void CFX_DIBSource::CopyPalette(const FX_DWORD* pSrc, FX_DWORD size)
{
if (pSrc == NULL || GetBPP() > 8) {
if (m_pPalette) {
FX_Free(m_pPalette);
}
m_pPalette = NULL;
} else {
FX_DWORD pal_size = 1 << GetBPP();
if (m_pPalette == NULL) {
m_pPalette = FX_Alloc(FX_DWORD, pal_size);
}
if (!m_pPalette) {
return;
}
if (pal_size > size) {
pal_size = size;
}
FXSYS_memcpy32(m_pPalette, pSrc, pal_size * sizeof(FX_DWORD));
}
}
void CFX_DIBSource::GetPalette(FX_DWORD* pal, int alpha) const
{
ASSERT(GetBPP() <= 8 && !IsCmykImage());
if (GetBPP() == 1) {
pal[0] = ((m_pPalette ? m_pPalette[0] : 0xff000000) & 0xffffff) | (alpha << 24);
pal[1] = ((m_pPalette ? m_pPalette[1] : 0xffffffff) & 0xffffff) | (alpha << 24);
return;
}
if (m_pPalette) {
for (int i = 0; i < 256; i ++) {
pal[i] = (m_pPalette[i] & 0x00ffffff) | (alpha << 24);
}
} else {
for (int i = 0; i < 256; i ++) {
pal[i] = (i * 0x10101) | (alpha << 24);
}
}
}
CFX_DIBitmap* CFX_DIBSource::GetAlphaMask(const FX_RECT* pClip) const
{
ASSERT(GetFormat() == FXDIB_Argb);
FX_RECT rect(0, 0, m_Width, m_Height);
if (pClip) {
rect.Intersect(*pClip);
if (rect.IsEmpty()) {
return NULL;
}
}
CFX_DIBitmap* pMask = FX_NEW CFX_DIBitmap;
if (!pMask) {
return NULL;
}
if (!pMask->Create(rect.Width(), rect.Height(), FXDIB_8bppMask)) {
delete pMask;
return NULL;
}
for (int row = rect.top; row < rect.bottom; row ++) {
FX_LPCBYTE src_scan = GetScanline(row) + rect.left * 4 + 3;
FX_LPBYTE dest_scan = (FX_LPBYTE)pMask->GetScanline(row - rect.top);
for (int col = rect.left; col < rect.right; col ++) {
*dest_scan ++ = *src_scan;
src_scan += 4;
}
}
return pMask;
}
FX_BOOL CFX_DIBSource::CopyAlphaMask(const CFX_DIBSource* pAlphaMask, const FX_RECT* pClip)
{
if (!HasAlpha() || GetFormat() == FXDIB_Argb) {
return FALSE;
}
if (pAlphaMask) {
FX_RECT rect(0, 0, pAlphaMask->m_Width, pAlphaMask->m_Height);
if (pClip) {
rect.Intersect(*pClip);
if (rect.IsEmpty() || rect.Width() != m_Width || rect.Height() != m_Height) {
return FALSE;
}
} else {
if (pAlphaMask->m_Width != m_Width || pAlphaMask->m_Height != m_Height) {
return FALSE;
}
}
for (int row = 0; row < m_Height; row ++)
FXSYS_memcpy32((void*)m_pAlphaMask->GetScanline(row),
pAlphaMask->GetScanline(row + rect.top) + rect.left, m_pAlphaMask->m_Pitch);
} else {
m_pAlphaMask->Clear(0xff000000);
}
return TRUE;
}
const int g_ChannelOffset[] = {0, 2, 1, 0, 0, 1, 2, 3, 3};
FX_BOOL CFX_DIBitmap::LoadChannel(FXDIB_Channel destChannel, const CFX_DIBSource* pSrcBitmap, FXDIB_Channel srcChannel)
{
if (m_pBuffer == NULL) {
return FALSE;
}
CFX_DIBSource* pSrcClone = (CFX_DIBSource*)pSrcBitmap;
CFX_DIBitmap* pDst = this;
int destOffset, srcOffset;
if (srcChannel == FXDIB_Alpha) {
if (!pSrcBitmap->HasAlpha() && !pSrcBitmap->IsAlphaMask()) {
return FALSE;
}
if (pSrcBitmap->GetBPP() == 1) {
pSrcClone = pSrcBitmap->CloneConvert(FXDIB_8bppMask);
if (pSrcClone == NULL) {
return FALSE;
}
}
if(pSrcBitmap->GetFormat() == FXDIB_Argb) {
srcOffset = 3;
} else {
srcOffset = 0;
}
} else {
if (pSrcBitmap->IsAlphaMask()) {
return FALSE;
}
if (pSrcBitmap->GetBPP() < 24) {
if (pSrcBitmap->IsCmykImage()) {
pSrcClone = pSrcBitmap->CloneConvert((FXDIB_Format)((pSrcBitmap->GetFormat() & 0xff00) | 0x20));
} else {
pSrcClone = pSrcBitmap->CloneConvert((FXDIB_Format)((pSrcBitmap->GetFormat() & 0xff00) | 0x18));
}
if (pSrcClone == NULL) {
return FALSE;
}
}
srcOffset = g_ChannelOffset[srcChannel];
}
if (destChannel == FXDIB_Alpha) {
if (IsAlphaMask()) {
if(!ConvertFormat(FXDIB_8bppMask)) {
if (pSrcClone != pSrcBitmap) {
delete pSrcClone;
}
return FALSE;
}
destOffset = 0;
} else {
destOffset = 0;
if(!ConvertFormat(IsCmykImage() ? FXDIB_Cmyka : FXDIB_Argb)) {
if (pSrcClone != pSrcBitmap) {
delete pSrcClone;
}
return FALSE;
}
if (GetFormat() == FXDIB_Argb) {
destOffset = 3;
}
}
} else {
if (IsAlphaMask()) {
if (pSrcClone != pSrcBitmap) {
delete pSrcClone;
}
return FALSE;
}
if (GetBPP() < 24) {
if (HasAlpha()) {
if (!ConvertFormat(IsCmykImage() ? FXDIB_Cmyka : FXDIB_Argb)) {
if (pSrcClone != pSrcBitmap) {
delete pSrcClone;
}
return FALSE;
}
} else
#if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_
if (!ConvertFormat(IsCmykImage() ? FXDIB_Cmyk : FXDIB_Rgb32)) {
#else
if (!ConvertFormat(IsCmykImage() ? FXDIB_Cmyk : FXDIB_Rgb)) {
#endif
if (pSrcClone != pSrcBitmap) {
delete pSrcClone;
}
return FALSE;
}
}
destOffset = g_ChannelOffset[destChannel];
}
if (srcChannel == FXDIB_Alpha && pSrcClone->m_pAlphaMask) {
CFX_DIBitmap* pAlphaMask = pSrcClone->m_pAlphaMask;
if (pSrcClone->GetWidth() != m_Width || pSrcClone->GetHeight() != m_Height) {
if (pAlphaMask) {
pAlphaMask = pAlphaMask->StretchTo(m_Width, m_Height);
if (pAlphaMask == NULL) {
if (pSrcClone != pSrcBitmap) {
delete pSrcClone;
}
return FALSE;
}
}
}
if (pSrcClone != pSrcBitmap) {
pSrcClone->m_pAlphaMask = NULL;
delete pSrcClone;
}
pSrcClone = pAlphaMask;
srcOffset = 0;
} else if (pSrcClone->GetWidth() != m_Width || pSrcClone->GetHeight() != m_Height) {
CFX_DIBitmap* pSrcMatched = pSrcClone->StretchTo(m_Width, m_Height);
if (pSrcClone != pSrcBitmap) {
delete pSrcClone;
}
if (pSrcMatched == NULL) {
return FALSE;
}
pSrcClone = pSrcMatched;
}
if (destChannel == FXDIB_Alpha && m_pAlphaMask) {
pDst = m_pAlphaMask;
destOffset = 0;
}
int srcBytes = pSrcClone->GetBPP() / 8;
int destBytes = pDst->GetBPP() / 8;
for (int row = 0; row < m_Height; row ++) {
FX_LPBYTE dest_pos = (FX_LPBYTE)pDst->GetScanline(row) + destOffset;
FX_LPCBYTE src_pos = pSrcClone->GetScanline(row) + srcOffset;
for (int col = 0; col < m_Width; col ++) {
*dest_pos = *src_pos;
dest_pos += destBytes;
src_pos += srcBytes;
}
}
if (pSrcClone != pSrcBitmap && pSrcClone != pSrcBitmap->m_pAlphaMask) {
delete pSrcClone;
}
return TRUE;
}
FX_BOOL CFX_DIBitmap::LoadChannel(FXDIB_Channel destChannel, int value)
{
if (m_pBuffer == NULL) {
return FALSE;
}
int destOffset;
if (destChannel == FXDIB_Alpha) {
if (IsAlphaMask()) {
if(!ConvertFormat(FXDIB_8bppMask)) {
return FALSE;
}
destOffset = 0;
} else {
destOffset = 0;
if(!ConvertFormat(IsCmykImage() ? FXDIB_Cmyka : FXDIB_Argb)) {
return FALSE;
}
if (GetFormat() == FXDIB_Argb) {
destOffset = 3;
}
}
} else {
if (IsAlphaMask()) {
return FALSE;
}
if (GetBPP() < 24) {
if (HasAlpha()) {
if (!ConvertFormat(IsCmykImage() ? FXDIB_Cmyka : FXDIB_Argb)) {
return FALSE;
}
} else
#if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_
if (!ConvertFormat(IsCmykImage() ? FXDIB_Cmyk : FXDIB_Rgb)) {
return FALSE;
}
#else
if (!ConvertFormat(IsCmykImage() ? FXDIB_Cmyk : FXDIB_Rgb32)) {
return FALSE;
}
#endif
}
destOffset = g_ChannelOffset[destChannel];
}
int Bpp = GetBPP() / 8;
if (Bpp == 1) {
FXSYS_memset8(m_pBuffer, value, m_Height * m_Pitch);
return TRUE;
}
if (destChannel == FXDIB_Alpha && m_pAlphaMask) {
FXSYS_memset8(m_pAlphaMask->GetBuffer(), value, m_pAlphaMask->GetHeight()*m_pAlphaMask->GetPitch());
return TRUE;
}
for (int row = 0; row < m_Height; row ++) {
FX_LPBYTE scan_line = m_pBuffer + row * m_Pitch + destOffset;
for (int col = 0; col < m_Width; col ++) {
*scan_line = value;
scan_line += Bpp;
}
}
return TRUE;
}
FX_BOOL CFX_DIBitmap::MultiplyAlpha(const CFX_DIBSource* pSrcBitmap)
{
if (m_pBuffer == NULL) {
return FALSE;
}
ASSERT(pSrcBitmap->IsAlphaMask());
if (!pSrcBitmap->IsAlphaMask()) {
return FALSE;
}
if (!IsAlphaMask() && !HasAlpha()) {
return LoadChannel(FXDIB_Alpha, pSrcBitmap, FXDIB_Alpha);
}
CFX_DIBitmap* pSrcClone = (CFX_DIBitmap*)pSrcBitmap;
if (pSrcBitmap->GetWidth() != m_Width || pSrcBitmap->GetHeight() != m_Height) {
pSrcClone = pSrcBitmap->StretchTo(m_Width, m_Height);
ASSERT(pSrcClone != NULL);
if (pSrcClone == NULL) {
return FALSE;
}
}
if (IsAlphaMask()) {
if(!ConvertFormat(FXDIB_8bppMask)) {
if (pSrcClone != pSrcBitmap) {
delete pSrcClone;
}
return FALSE;
}
for (int row = 0; row < m_Height; row ++) {
FX_LPBYTE dest_scan = m_pBuffer + m_Pitch * row;
FX_LPBYTE src_scan = pSrcClone->m_pBuffer + pSrcClone->m_Pitch * row;
if (pSrcClone->GetBPP() == 1) {
for (int col = 0; col < m_Width; col ++) {
if (!((1 << (7 - col % 8)) & src_scan[col / 8])) {
dest_scan[col] = 0;
}
}
} else {
for (int col = 0; col < m_Width; col ++) {
*dest_scan = (*dest_scan) * src_scan[col] / 255;
dest_scan ++;
}
}
}
} else {
if(GetFormat() == FXDIB_Argb) {
if (pSrcClone->GetBPP() == 1) {
if (pSrcClone != pSrcBitmap) {
delete pSrcClone;
}
return FALSE;
}
for (int row = 0; row < m_Height; row ++) {
FX_LPBYTE dest_scan = m_pBuffer + m_Pitch * row + 3;
FX_LPBYTE src_scan = pSrcClone->m_pBuffer + pSrcClone->m_Pitch * row;
for (int col = 0; col < m_Width; col ++) {
*dest_scan = (*dest_scan) * src_scan[col] / 255;
dest_scan += 4;
}
}
} else {
m_pAlphaMask->MultiplyAlpha(pSrcClone);
}
}
if (pSrcClone != pSrcBitmap) {
delete pSrcClone;
}
return TRUE;
}
FX_BOOL CFX_DIBitmap::GetGrayData(void* pIccTransform)
{
if (m_pBuffer == NULL) {
return FALSE;
}
switch (GetFormat()) {
case FXDIB_1bppRgb: {
if (m_pPalette == NULL) {
return FALSE;
}
FX_BYTE gray[2];
for (int i = 0; i < 2; i ++) {
int r = (FX_BYTE)(m_pPalette[i] >> 16);
int g = (FX_BYTE)(m_pPalette[i] >> 8);
int b = (FX_BYTE)m_pPalette[i];
gray[i] = (FX_BYTE)FXRGB2GRAY(r, g, b);
}
CFX_DIBitmap* pMask = FX_NEW CFX_DIBitmap;
if (!pMask) {
return FALSE;
}
if (!pMask->Create(m_Width, m_Height, FXDIB_8bppMask)) {
delete pMask;
return FALSE;
}
FXSYS_memset8(pMask->GetBuffer(), gray[0], pMask->GetPitch() * m_Height);
for (int row = 0; row < m_Height; row ++) {
FX_LPBYTE src_pos = m_pBuffer + row * m_Pitch;
FX_LPBYTE dest_pos = (FX_LPBYTE)pMask->GetScanline(row);
for (int col = 0; col < m_Width; col ++) {
if (src_pos[col / 8] & (1 << (7 - col % 8))) {
*dest_pos = gray[1];
}
dest_pos ++;
}
}
TakeOver(pMask);
delete pMask;
break;
}
case FXDIB_8bppRgb: {
if (m_pPalette == NULL) {
return FALSE;
}
FX_BYTE gray[256];
for (int i = 0; i < 256; i ++) {
int r = (FX_BYTE)(m_pPalette[i] >> 16);
int g = (FX_BYTE)(m_pPalette[i] >> 8);
int b = (FX_BYTE)m_pPalette[i];
gray[i] = (FX_BYTE)FXRGB2GRAY(r, g, b);
}
CFX_DIBitmap* pMask = FX_NEW CFX_DIBitmap;
if (!pMask) {
return FALSE;
}
if (!pMask->Create(m_Width, m_Height, FXDIB_8bppMask)) {
delete pMask;
return FALSE;
}
for (int row = 0; row < m_Height; row ++) {
FX_LPBYTE dest_pos = pMask->GetBuffer() + row * pMask->GetPitch();
FX_LPBYTE src_pos = m_pBuffer + row * m_Pitch;
for (int col = 0; col < m_Width; col ++) {
*dest_pos ++ = gray[*src_pos ++];
}
}
TakeOver(pMask);
delete pMask;
break;
}
case FXDIB_Rgb: {
CFX_DIBitmap* pMask = FX_NEW CFX_DIBitmap;
if (!pMask) {
return FALSE;
}
if (!pMask->Create(m_Width, m_Height, FXDIB_8bppMask)) {
delete pMask;
return FALSE;
}
for (int row = 0; row < m_Height; row ++) {
FX_LPBYTE src_pos = m_pBuffer + row * m_Pitch;
FX_LPBYTE dest_pos = pMask->GetBuffer() + row * pMask->GetPitch();
for (int col = 0; col < m_Width; col ++) {
*dest_pos ++ = FXRGB2GRAY(src_pos[2], src_pos[1], *src_pos);
src_pos += 3;
}
}
TakeOver(pMask);
delete pMask;
break;
}
case FXDIB_Rgb32: {
CFX_DIBitmap* pMask = FX_NEW CFX_DIBitmap;
if (!pMask) {
return FALSE;
}
if (!pMask->Create(m_Width, m_Height, FXDIB_8bppMask)) {
delete pMask;
return FALSE;
}
for (int row = 0; row < m_Height; row ++) {
FX_LPBYTE src_pos = m_pBuffer + row * m_Pitch;
FX_LPBYTE dest_pos = pMask->GetBuffer() + row * pMask->GetPitch();
for (int col = 0; col < m_Width; col ++) {
*dest_pos ++ = FXRGB2GRAY(src_pos[2], src_pos[1], *src_pos);
src_pos += 4;
}
}
TakeOver(pMask);
delete pMask;
break;
}
default:
return FALSE;
}
return TRUE;
}
FX_BOOL CFX_DIBitmap::MultiplyAlpha(int alpha)
{
if (m_pBuffer == NULL) {
return FALSE;
}
switch (GetFormat()) {
case FXDIB_1bppMask:
if (!ConvertFormat(FXDIB_8bppMask)) {
return FALSE;
}
MultiplyAlpha(alpha);
break;
case FXDIB_8bppMask: {
for (int row = 0; row < m_Height; row ++) {
FX_LPBYTE scan_line = m_pBuffer + row * m_Pitch;
for (int col = 0; col < m_Width; col ++) {
scan_line[col] = scan_line[col] * alpha / 255;
}
}
break;
}
case FXDIB_Argb: {
for (int row = 0; row < m_Height; row ++) {
FX_LPBYTE scan_line = m_pBuffer + row * m_Pitch + 3;
for (int col = 0; col < m_Width; col ++) {
*scan_line = (*scan_line) * alpha / 255;
scan_line += 4;
}
}
break;
}
default:
if (HasAlpha()) {
m_pAlphaMask->MultiplyAlpha(alpha);
} else if (IsCmykImage()) {
if (!ConvertFormat((FXDIB_Format)(GetFormat() | 0x0200))) {
return FALSE;
}
m_pAlphaMask->MultiplyAlpha(alpha);
} else {
if (!ConvertFormat(FXDIB_Argb)) {
return FALSE;
}
MultiplyAlpha(alpha);
}
break;
}
return TRUE;
}
#if !defined(_FPDFAPI_MINI_) || defined(_FXCORE_FEATURE_ALL_)
FX_DWORD CFX_DIBitmap::GetPixel(int x, int y) const
{
if (m_pBuffer == NULL) {
return 0;
}
FX_LPBYTE pos = m_pBuffer + y * m_Pitch + x * GetBPP() / 8;
switch (GetFormat()) {
case FXDIB_1bppMask: {
if ((*pos) & (1 << (7 - x % 8))) {
return 0xff000000;
}
return 0;
}
case FXDIB_1bppRgb: {
if ((*pos) & (1 << (7 - x % 8))) {
return m_pPalette ? m_pPalette[1] : 0xffffffff;
} else {
return m_pPalette ? m_pPalette[0] : 0xff000000;
}
break;
}
case FXDIB_8bppMask:
return (*pos) << 24;
case FXDIB_8bppRgb:
return m_pPalette ? m_pPalette[*pos] : (0xff000000 | ((*pos) * 0x10101));
case FXDIB_Rgb:
case FXDIB_Rgba:
case FXDIB_Rgb32:
return FXARGB_GETDIB(pos) | 0xff000000;
case FXDIB_Argb:
return FXARGB_GETDIB(pos);
default:
break;
}
return 0;
}
#endif
void CFX_DIBitmap::SetPixel(int x, int y, FX_DWORD color)
{
if (m_pBuffer == NULL) {
return;
}
if (x < 0 || x >= m_Width || y < 0 || y >= m_Height) {
return;
}
FX_LPBYTE pos = m_pBuffer + y * m_Pitch + x * GetBPP() / 8;
switch (GetFormat()) {
case FXDIB_1bppMask:
if (color >> 24) {
*pos |= 1 << (7 - x % 8);
} else {
*pos &= ~(1 << (7 - x % 8));
}
break;
case FXDIB_1bppRgb:
if (m_pPalette) {
if (color == m_pPalette[1]) {
*pos |= 1 << (7 - x % 8);
} else {
*pos &= ~(1 << (7 - x % 8));
}
} else {
if (color == 0xffffffff) {
*pos |= 1 << (7 - x % 8);
} else {
*pos &= ~(1 << (7 - x % 8));
}
}
break;
case FXDIB_8bppMask:
*pos = (FX_BYTE)(color >> 24);
break;
case FXDIB_8bppRgb: {
if (m_pPalette) {
for (int i = 0; i < 256; i ++) {
if (m_pPalette[i] == color) {
*pos = (FX_BYTE)i;
return;
}
}
*pos = 0;
} else {
*pos = FXRGB2GRAY(FXARGB_R(color), FXARGB_G(color), FXARGB_B(color));
}
break;
}
case FXDIB_Rgb:
case FXDIB_Rgb32: {
int alpha = FXARGB_A(color);
pos[0] = (FXARGB_B(color) * alpha + pos[0] * (255 - alpha)) / 255;
pos[1] = (FXARGB_G(color) * alpha + pos[1] * (255 - alpha)) / 255;
pos[2] = (FXARGB_R(color) * alpha + pos[2] * (255 - alpha)) / 255;
break;
}
case FXDIB_Rgba: {
pos[0] = FXARGB_B(color);
pos[1] = FXARGB_G(color);
pos[2] = FXARGB_R(color);
break;
}
case FXDIB_Argb:
FXARGB_SETDIB(pos, color);
break;
default:
break;
}
}
void CFX_DIBitmap::DownSampleScanline(int line, FX_LPBYTE dest_scan, int dest_bpp,
int dest_width, FX_BOOL bFlipX, int clip_left, int clip_width) const
{
if (m_pBuffer == NULL) {
return;
}
int src_Bpp = m_bpp / 8;
FX_LPBYTE scanline = m_pBuffer + line * m_Pitch;
if (src_Bpp == 0) {
for (int i = 0; i < clip_width; i ++) {
FX_DWORD dest_x = clip_left + i;
FX_DWORD src_x = dest_x * m_Width / dest_width;
if (bFlipX) {
src_x = m_Width - src_x - 1;
}
#ifdef FOXIT_CHROME_BUILD
src_x %= m_Width;
#endif
dest_scan[i] = (scanline[src_x / 8] & (1 << (7 - src_x % 8))) ? 255 : 0;
}
} else if (src_Bpp == 1) {
for (int i = 0; i < clip_width; i ++) {
FX_DWORD dest_x = clip_left + i;
FX_DWORD src_x = dest_x * m_Width / dest_width;
if (bFlipX) {
src_x = m_Width - src_x - 1;
}
#ifdef FOXIT_CHROME_BUILD
src_x %= m_Width;
#endif
int dest_pos = i;
if (m_pPalette) {
if (!IsCmykImage()) {
dest_pos *= 3;
FX_ARGB argb = m_pPalette[scanline[src_x]];
dest_scan[dest_pos] = FXARGB_B(argb);
dest_scan[dest_pos + 1] = FXARGB_G(argb);
dest_scan[dest_pos + 2] = FXARGB_R(argb);
} else {
dest_pos *= 4;
FX_CMYK cmyk = m_pPalette[scanline[src_x]];
dest_scan[dest_pos] = FXSYS_GetCValue(cmyk);
dest_scan[dest_pos + 1] = FXSYS_GetMValue(cmyk);
dest_scan[dest_pos + 2] = FXSYS_GetYValue(cmyk);
dest_scan[dest_pos + 3] = FXSYS_GetKValue(cmyk);
}
} else {
dest_scan[dest_pos] = scanline[src_x];
}
}
} else {
for (int i = 0; i < clip_width; i ++) {
FX_DWORD dest_x = clip_left + i;
FX_DWORD src_x = bFlipX ? (m_Width - dest_x * m_Width / dest_width - 1) * src_Bpp : (dest_x * m_Width / dest_width) * src_Bpp;
#ifdef FOXIT_CHROME_BUILD
src_x %= m_Width * src_Bpp;
#endif
int dest_pos = i * src_Bpp;
for (int b = 0; b < src_Bpp; b ++) {
dest_scan[dest_pos + b] = scanline[src_x + b];
}
}
}
}
FX_BOOL CFX_DIBitmap::ConvertColorScale(FX_DWORD forecolor, FX_DWORD backcolor)
{
ASSERT(!IsAlphaMask());
if (m_pBuffer == NULL || IsAlphaMask()) {
return FALSE;
}
int fc, fm, fy, fk, bc, bm, by, bk;
int fr, fg, fb, br, bg, bb;
FX_BOOL isCmykImage = IsCmykImage();
if (isCmykImage) {
fc = FXSYS_GetCValue(forecolor);
fm = FXSYS_GetMValue(forecolor);
fy = FXSYS_GetYValue(forecolor);
fk = FXSYS_GetKValue(forecolor);
bc = FXSYS_GetCValue(backcolor);
bm = FXSYS_GetMValue(backcolor);
by = FXSYS_GetYValue(backcolor);
bk = FXSYS_GetKValue(backcolor);
} else {
fr = FXSYS_GetRValue(forecolor);
fg = FXSYS_GetGValue(forecolor);
fb = FXSYS_GetBValue(forecolor);
br = FXSYS_GetRValue(backcolor);
bg = FXSYS_GetGValue(backcolor);
bb = FXSYS_GetBValue(backcolor);
}
if (m_bpp <= 8) {
if (isCmykImage) {
if (forecolor == 0xff && backcolor == 0 && m_pPalette == NULL) {
return TRUE;
}
} else if (forecolor == 0 && backcolor == 0xffffff && m_pPalette == NULL) {
return TRUE;
}
if (m_pPalette == NULL) {
BuildPalette();
}
int size = 1 << m_bpp;
if (isCmykImage) {
for (int i = 0; i < size; i ++) {
FX_BYTE b, g, r;
AdobeCMYK_to_sRGB1(FXSYS_GetCValue(m_pPalette[i]), FXSYS_GetMValue(m_pPalette[i]), FXSYS_GetYValue(m_pPalette[i]), FXSYS_GetKValue(m_pPalette[i]),
r, g, b);
int gray = 255 - FXRGB2GRAY(r, g, b);
m_pPalette[i] = CmykEncode(bc + (fc - bc) * gray / 255, bm + (fm - bm) * gray / 255,
by + (fy - by) * gray / 255, bk + (fk - bk) * gray / 255);
}
} else
for (int i = 0; i < size; i ++) {
int gray = FXRGB2GRAY(FXARGB_R(m_pPalette[i]), FXARGB_G(m_pPalette[i]), FXARGB_B(m_pPalette[i]));
m_pPalette[i] = FXARGB_MAKE(0xff, br + (fr - br) * gray / 255, bg + (fg - bg) * gray / 255,
bb + (fb - bb) * gray / 255);
}
return TRUE;
}
if (isCmykImage) {
if (forecolor == 0xff && backcolor == 0x00) {
for (int row = 0; row < m_Height; row ++) {
FX_LPBYTE scanline = m_pBuffer + row * m_Pitch;
for (int col = 0; col < m_Width; col ++) {
FX_BYTE b, g, r;
AdobeCMYK_to_sRGB1(scanline[0], scanline[1], scanline[2], scanline[3],
r, g, b);
*scanline ++ = 0;
*scanline ++ = 0;
*scanline ++ = 0;
*scanline ++ = 255 - FXRGB2GRAY(r, g, b);
}
}
return TRUE;
}
} else if (forecolor == 0 && backcolor == 0xffffff) {
for (int row = 0; row < m_Height; row ++) {
FX_LPBYTE scanline = m_pBuffer + row * m_Pitch;
int gap = m_bpp / 8 - 2;
for (int col = 0; col < m_Width; col ++) {
int gray = FXRGB2GRAY(scanline[2], scanline[1], scanline[0]);
*scanline ++ = gray;
*scanline ++ = gray;
*scanline = gray;
scanline += gap;
}
}
return TRUE;
}
if (isCmykImage) {
for (int row = 0; row < m_Height; row ++) {
FX_LPBYTE scanline = m_pBuffer + row * m_Pitch;
for (int col = 0; col < m_Width; col ++) {
FX_BYTE b, g, r;
AdobeCMYK_to_sRGB1(scanline[0], scanline[1], scanline[2], scanline[3],
r, g, b);
int gray = 255 - FXRGB2GRAY(r, g, b);
*scanline ++ = bc + (fc - bc) * gray / 255;
*scanline ++ = bm + (fm - bm) * gray / 255;
*scanline ++ = by + (fy - by) * gray / 255;
*scanline ++ = bk + (fk - bk) * gray / 255;
}
}
} else
for (int row = 0; row < m_Height; row ++) {
FX_LPBYTE scanline = m_pBuffer + row * m_Pitch;
int gap = m_bpp / 8 - 2;
for (int col = 0; col < m_Width; col ++) {
int gray = FXRGB2GRAY(scanline[2], scanline[1], scanline[0]);
*scanline ++ = bb + (fb - bb) * gray / 255;
*scanline ++ = bg + (fg - bg) * gray / 255;
*scanline = br + (fr - br) * gray / 255;
scanline += gap;
}
}
return TRUE;
}
FX_BOOL CFX_DIBitmap::DitherFS(const FX_DWORD* pPalette, int pal_size, const FX_RECT* pRect)
{
if (m_pBuffer == NULL) {
return FALSE;
}
if (m_bpp != 8 && m_pPalette != NULL && m_AlphaFlag != 0) {
return FALSE;
}
if (m_Width < 4 && m_Height < 4) {
return FALSE;
}
FX_RECT rect(0, 0, m_Width, m_Height);
if (pRect) {
rect.Intersect(*pRect);
}
FX_BYTE translate[256];
for (int i = 0; i < 256; i ++) {
int err2 = 65536;
for (int j = 0; j < pal_size; j ++) {
FX_BYTE entry = (FX_BYTE)pPalette[j];
int err = (int)entry - i;
if (err * err < err2) {
err2 = err * err;
translate[i] = entry;
}
}
}
for (int row = rect.top; row < rect.bottom; row ++) {
FX_LPBYTE scan = m_pBuffer + row * m_Pitch;
FX_LPBYTE next_scan = m_pBuffer + (row + 1) * m_Pitch;
for (int col = rect.left; col < rect.right; col ++) {
int src_pixel = scan[col];
int dest_pixel = translate[src_pixel];
scan[col] = (FX_BYTE)dest_pixel;
int error = -dest_pixel + src_pixel;
if (col < rect.right - 1) {
int src = scan[col + 1];
src += error * 7 / 16;
if (src > 255) {
scan[col + 1] = 255;
} else if (src < 0) {
scan[col + 1] = 0;
} else {
scan[col + 1] = src;
}
}
if (col < rect.right - 1 && row < rect.bottom - 1) {
int src = next_scan[col + 1];
src += error * 1 / 16;
if (src > 255) {
next_scan[col + 1] = 255;
} else if (src < 0) {
next_scan[col + 1] = 0;
} else {
next_scan[col + 1] = src;
}
}
if (row < rect.bottom - 1) {
int src = next_scan[col];
src += error * 5 / 16;
if (src > 255) {
next_scan[col] = 255;
} else if (src < 0) {
next_scan[col] = 0;
} else {
next_scan[col] = src;
}
}
if (col > rect.left && row < rect.bottom - 1) {
int src = next_scan[col - 1];
src += error * 3 / 16;
if (src > 255) {
next_scan[col - 1] = 255;
} else if (src < 0) {
next_scan[col - 1] = 0;
} else {
next_scan[col - 1] = src;
}
}
}
}
return TRUE;
}
CFX_DIBitmap* CFX_DIBSource::FlipImage(FX_BOOL bXFlip, FX_BOOL bYFlip) const
{
CFX_DIBitmap* pFlipped = FX_NEW CFX_DIBitmap;
if (!pFlipped) {
return NULL;
}
if (!pFlipped->Create(m_Width, m_Height, GetFormat())) {
delete pFlipped;
return NULL;
}
pFlipped->CopyPalette(m_pPalette);
FX_LPBYTE pDestBuffer = pFlipped->GetBuffer();
int Bpp = m_bpp / 8;
for (int row = 0; row < m_Height; row ++) {
FX_LPCBYTE src_scan = GetScanline(row);
FX_LPBYTE dest_scan = pDestBuffer + m_Pitch * (bYFlip ? (m_Height - row - 1) : row);
if (!bXFlip) {
FXSYS_memcpy32(dest_scan, src_scan, m_Pitch);
continue;
}
if (m_bpp == 1) {
FXSYS_memset32(dest_scan, 0, m_Pitch);
for (int col = 0; col < m_Width; col ++)
if (src_scan[col / 8] & (1 << (7 - col % 8))) {
int dest_col = m_Width - col - 1;
dest_scan[dest_col / 8] |= (1 << (7 - dest_col % 8));
}
} else {
dest_scan += (m_Width - 1) * Bpp;
if (Bpp == 1) {
for (int col = 0; col < m_Width; col ++) {
*dest_scan = *src_scan;
dest_scan --;
src_scan ++;
}
} else if (Bpp == 3) {
for (int col = 0; col < m_Width; col ++) {
dest_scan[0] = src_scan[0];
dest_scan[1] = src_scan[1];
dest_scan[2] = src_scan[2];
dest_scan -= 3;
src_scan += 3;
}
} else {
ASSERT(Bpp == 4);
for (int col = 0; col < m_Width; col ++) {
*(FX_DWORD*)dest_scan = *(FX_DWORD*)src_scan;
dest_scan -= 4;
src_scan += 4;
}
}
}
}
if (m_pAlphaMask) {
pDestBuffer = pFlipped->m_pAlphaMask->GetBuffer();
FX_DWORD dest_pitch = pFlipped->m_pAlphaMask->GetPitch();
for (int row = 0; row < m_Height; row ++) {
FX_LPCBYTE src_scan = m_pAlphaMask->GetScanline(row);
FX_LPBYTE dest_scan = pDestBuffer + dest_pitch * (bYFlip ? (m_Height - row - 1) : row);
if (!bXFlip) {
FXSYS_memcpy32(dest_scan, src_scan, dest_pitch);
continue;
}
dest_scan += (m_Width - 1);
for (int col = 0; col < m_Width; col ++) {
*dest_scan = *src_scan;
dest_scan --;
src_scan ++;
}
}
}
return pFlipped;
}
CFX_DIBExtractor::CFX_DIBExtractor(const CFX_DIBSource* pSrc)
{
m_pBitmap = NULL;
if (pSrc->GetBuffer() == NULL) {
m_pBitmap = pSrc->Clone();
} else {
m_pBitmap = FX_NEW CFX_DIBitmap;
if (!m_pBitmap) {
return;
}
if (!m_pBitmap->Create(pSrc->GetWidth(), pSrc->GetHeight(), pSrc->GetFormat(), pSrc->GetBuffer())) {
delete m_pBitmap;
m_pBitmap = NULL;
return;
}
m_pBitmap->CopyPalette(pSrc->GetPalette());
m_pBitmap->CopyAlphaMask(pSrc->m_pAlphaMask);
}
}
CFX_DIBExtractor::~CFX_DIBExtractor()
{
if (m_pBitmap) {
delete m_pBitmap;
}
}
CFX_FilteredDIB::CFX_FilteredDIB()
{
m_pScanline = NULL;
m_pSrc = NULL;
}
CFX_FilteredDIB::~CFX_FilteredDIB()
{
if (m_pSrc && m_bAutoDropSrc) {
delete m_pSrc;
}
if (m_pScanline) {
FX_Free(m_pScanline);
}
}
void CFX_FilteredDIB::LoadSrc(const CFX_DIBSource* pSrc, FX_BOOL bAutoDropSrc)
{
m_pSrc = pSrc;
m_bAutoDropSrc = bAutoDropSrc;
m_Width = pSrc->GetWidth();
m_Height = pSrc->GetHeight();
FXDIB_Format format = GetDestFormat();
m_bpp = (FX_BYTE)format;
m_AlphaFlag = (FX_BYTE)(format >> 8);
m_Pitch = (m_Width * (format & 0xff) + 31) / 32 * 4;
m_pPalette = GetDestPalette();
m_pScanline = FX_Alloc(FX_BYTE, m_Pitch);
}
FX_LPCBYTE CFX_FilteredDIB::GetScanline(int line) const
{
TranslateScanline(m_pScanline, m_pSrc->GetScanline(line));
return m_pScanline;
}
void CFX_FilteredDIB::DownSampleScanline(int line, FX_LPBYTE dest_scan, int dest_bpp,
int dest_width, FX_BOOL bFlipX, int clip_left, int clip_width) const
{
m_pSrc->DownSampleScanline(line, dest_scan, dest_bpp, dest_width, bFlipX, clip_left, clip_width);
TranslateDownSamples(dest_scan, dest_scan, clip_width, dest_bpp);
}
CFX_ImageRenderer::CFX_ImageRenderer()
{
m_Status = 0;
m_pTransformer = NULL;
m_bRgbByteOrder = FALSE;
m_BlendType = FXDIB_BLEND_NORMAL;
}
CFX_ImageRenderer::~CFX_ImageRenderer()
{
if (m_pTransformer) {
delete m_pTransformer;
}
}
extern FX_RECT _FXDIB_SwapClipBox(FX_RECT& clip, int width, int height, FX_BOOL bFlipX, FX_BOOL bFlipY);
FX_BOOL CFX_ImageRenderer::Start(CFX_DIBitmap* pDevice, const CFX_ClipRgn* pClipRgn,
const CFX_DIBSource* pSource, int bitmap_alpha,
FX_DWORD mask_color, const CFX_AffineMatrix* pMatrix,
FX_DWORD dib_flags, FX_BOOL bRgbByteOrder,
int alpha_flag, void* pIccTransform, int blend_type)
{
m_Matrix = *pMatrix;
CFX_FloatRect image_rect_f = m_Matrix.GetUnitRect();
FX_RECT image_rect = image_rect_f.GetOutterRect();
m_ClipBox = pClipRgn ? pClipRgn->GetBox() : FX_RECT(0, 0, pDevice->GetWidth(), pDevice->GetHeight());
m_ClipBox.Intersect(image_rect);
if (m_ClipBox.IsEmpty()) {
return FALSE;
}
m_pDevice = pDevice;
m_pClipRgn = pClipRgn;
m_MaskColor = mask_color;
m_BitmapAlpha = bitmap_alpha;
m_Matrix = *pMatrix;
m_Flags = dib_flags;
m_AlphaFlag = alpha_flag;
m_pIccTransform = pIccTransform;
m_bRgbByteOrder = bRgbByteOrder;
m_BlendType = blend_type;
FX_BOOL ret = TRUE;
if ((FXSYS_fabs(m_Matrix.b) >= 0.5f || m_Matrix.a == 0) ||
(FXSYS_fabs(m_Matrix.c) >= 0.5f || m_Matrix.d == 0) ) {
if (FXSYS_fabs(m_Matrix.a) < FXSYS_fabs(m_Matrix.b) / 20 && FXSYS_fabs(m_Matrix.d) < FXSYS_fabs(m_Matrix.c) / 20 &&
FXSYS_fabs(m_Matrix.a) < 0.5f && FXSYS_fabs(m_Matrix.d) < 0.5f) {
int dest_width = image_rect.Width();
int dest_height = image_rect.Height();
FX_RECT bitmap_clip = m_ClipBox;
bitmap_clip.Offset(-image_rect.left, -image_rect.top);
bitmap_clip = _FXDIB_SwapClipBox(bitmap_clip, dest_width, dest_height, m_Matrix.c > 0, m_Matrix.b < 0);
m_Composer.Compose(pDevice, pClipRgn, bitmap_alpha, mask_color, m_ClipBox, TRUE,
m_Matrix.c > 0, m_Matrix.b < 0, m_bRgbByteOrder, alpha_flag, pIccTransform, m_BlendType);
if (!m_Stretcher.Start(&m_Composer, pSource, dest_height, dest_width, bitmap_clip, dib_flags)) {
return FALSE;
}
m_Status = 1;
return TRUE;
}
m_Status = 2;
m_pTransformer = FX_NEW CFX_ImageTransformer;
if (!m_pTransformer) {
return FALSE;
}
m_pTransformer->Start(pSource, &m_Matrix, dib_flags, &m_ClipBox);
return TRUE;
}
int dest_width = image_rect.Width();
if (m_Matrix.a < 0) {
dest_width = -dest_width;
}
int dest_height = image_rect.Height();
if (m_Matrix.d > 0) {
dest_height = -dest_height;
}
if (dest_width == 0 || dest_height == 0) {
return FALSE;
}
FX_RECT bitmap_clip = m_ClipBox;
bitmap_clip.Offset(-image_rect.left, -image_rect.top);
m_Composer.Compose(pDevice, pClipRgn, bitmap_alpha, mask_color,
m_ClipBox, FALSE, FALSE, FALSE, m_bRgbByteOrder, alpha_flag, pIccTransform, m_BlendType);
m_Status = 1;
ret = m_Stretcher.Start(&m_Composer, pSource, dest_width, dest_height, bitmap_clip, dib_flags);
return ret;
}
FX_BOOL CFX_ImageRenderer::Continue(IFX_Pause* pPause)
{
if (m_Status == 1) {
return m_Stretcher.Continue(pPause);
} else if (m_Status == 2) {
if (m_pTransformer->Continue(pPause)) {
return TRUE;
}
CFX_DIBitmap* pBitmap = m_pTransformer->m_Storer.Detach();
if (pBitmap == NULL) {
return FALSE;
}
if (pBitmap->GetBuffer() == NULL) {
delete pBitmap;
return FALSE;
}
if (pBitmap->IsAlphaMask()) {
if (m_BitmapAlpha != 255) {
if (m_AlphaFlag >> 8) {
m_AlphaFlag = (((FX_BYTE)((m_AlphaFlag & 0xff) * m_BitmapAlpha / 255)) | ((m_AlphaFlag >> 8) << 8));
} else {
m_MaskColor = FXARGB_MUL_ALPHA(m_MaskColor, m_BitmapAlpha);
}
}
m_pDevice->CompositeMask(m_pTransformer->m_ResultLeft, m_pTransformer->m_ResultTop,
pBitmap->GetWidth(), pBitmap->GetHeight(), pBitmap, m_MaskColor,
0, 0, m_BlendType, m_pClipRgn, m_bRgbByteOrder, m_AlphaFlag, m_pIccTransform);
} else {
if (m_BitmapAlpha != 255) {
pBitmap->MultiplyAlpha(m_BitmapAlpha);
}
m_pDevice->CompositeBitmap(m_pTransformer->m_ResultLeft, m_pTransformer->m_ResultTop,
pBitmap->GetWidth(), pBitmap->GetHeight(), pBitmap, 0, 0, m_BlendType, m_pClipRgn, m_bRgbByteOrder, m_pIccTransform);
}
delete pBitmap;
return FALSE;
}
return FALSE;
}
CFX_BitmapStorer::CFX_BitmapStorer()
{
m_pBitmap = NULL;
}
CFX_BitmapStorer::~CFX_BitmapStorer()
{
if (m_pBitmap) {
delete m_pBitmap;
}
}
CFX_DIBitmap* CFX_BitmapStorer::Detach()
{
CFX_DIBitmap* pBitmap = m_pBitmap;
m_pBitmap = NULL;
return pBitmap;
}
void CFX_BitmapStorer::Replace(CFX_DIBitmap* pBitmap)
{
if (m_pBitmap) {
delete m_pBitmap;
}
m_pBitmap = pBitmap;
}
void CFX_BitmapStorer::ComposeScanline(int line, FX_LPCBYTE scanline, FX_LPCBYTE scan_extra_alpha)
{
FX_LPBYTE dest_buf = (FX_LPBYTE)m_pBitmap->GetScanline(line);
FX_LPBYTE dest_alpha_buf = m_pBitmap->m_pAlphaMask ?
(FX_LPBYTE)m_pBitmap->m_pAlphaMask->GetScanline(line) : NULL;
if (dest_buf) {
FXSYS_memcpy32(dest_buf, scanline, m_pBitmap->GetPitch());
}
if (dest_alpha_buf) {
FXSYS_memcpy32(dest_alpha_buf, scan_extra_alpha, m_pBitmap->m_pAlphaMask->GetPitch());
}
}
FX_BOOL CFX_BitmapStorer::SetInfo(int width, int height, FXDIB_Format src_format, FX_DWORD* pSrcPalette)
{
m_pBitmap = FX_NEW CFX_DIBitmap;
if (!m_pBitmap) {
return FALSE;
}
if (!m_pBitmap->Create(width, height, src_format)) {
delete m_pBitmap;
m_pBitmap = NULL;
return FALSE;
}
if (pSrcPalette) {
m_pBitmap->CopyPalette(pSrcPalette);
}
return TRUE;
}