kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 1 | // Copyright 2017 The PDFium Authors |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
| 6 | |
| 7 | #include "core/fxge/dib/cfx_dibbase.h" |
| 8 | |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 9 | #include <stdint.h> |
| 10 | #include <string.h> |
| 11 | |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 12 | #include <algorithm> |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 13 | #include <utility> |
| 14 | #include <vector> |
| 15 | |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 16 | #include "core/fxcrt/data_vector.h" |
| 17 | #include "core/fxcrt/fx_2d_size.h" |
| 18 | #include "core/fxcrt/fx_coordinates.h" |
| 19 | #include "core/fxcrt/fx_memory.h" |
| 20 | #include "core/fxcrt/fx_safe_types.h" |
| 21 | #include "core/fxcrt/span_util.h" |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 22 | #include "core/fxge/cfx_cliprgn.h" |
| 23 | #include "core/fxge/dib/cfx_bitmapstorer.h" |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 24 | #include "core/fxge/dib/cfx_dibitmap.h" |
| 25 | #include "core/fxge/dib/cfx_imagestretcher.h" |
| 26 | #include "core/fxge/dib/cfx_imagetransformer.h" |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 27 | #include "third_party/base/check.h" |
| 28 | #include "third_party/base/check_op.h" |
| 29 | #include "third_party/base/notreached.h" |
| 30 | #include "third_party/base/span.h" |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 31 | |
| 32 | namespace { |
| 33 | |
| 34 | void ColorDecode(uint32_t pal_v, uint8_t* r, uint8_t* g, uint8_t* b) { |
| 35 | *r = static_cast<uint8_t>((pal_v & 0xf00) >> 4); |
| 36 | *g = static_cast<uint8_t>(pal_v & 0x0f0); |
| 37 | *b = static_cast<uint8_t>((pal_v & 0x00f) << 4); |
| 38 | } |
| 39 | |
| 40 | void Obtain_Pal(std::pair<uint32_t, uint32_t>* luts, |
| 41 | uint32_t* dest_pal, |
| 42 | uint32_t lut) { |
| 43 | uint32_t lut_1 = lut - 1; |
| 44 | for (int row = 0; row < 256; ++row) { |
| 45 | int lut_offset = lut_1 - row; |
| 46 | if (lut_offset < 0) |
| 47 | lut_offset += 256; |
| 48 | uint32_t color = luts[lut_offset].second; |
| 49 | uint8_t r; |
| 50 | uint8_t g; |
| 51 | uint8_t b; |
| 52 | ColorDecode(color, &r, &g, &b); |
| 53 | dest_pal[row] = (static_cast<uint32_t>(r) << 16) | |
| 54 | (static_cast<uint32_t>(g) << 8) | b | 0xff000000; |
| 55 | luts[lut_offset].first = row; |
| 56 | } |
| 57 | } |
| 58 | |
| 59 | class CFX_Palette { |
| 60 | public: |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 61 | explicit CFX_Palette(const RetainPtr<const CFX_DIBBase>& pBitmap); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 62 | ~CFX_Palette(); |
| 63 | |
| 64 | const uint32_t* GetPalette() { return m_Palette.data(); } |
| 65 | const std::pair<uint32_t, uint32_t>* GetLuts() const { return m_Luts.data(); } |
| 66 | int32_t GetLutCount() const { return m_lut; } |
| 67 | void SetAmountLut(int row, uint32_t value) { m_Luts[row].first = value; } |
| 68 | |
| 69 | private: |
| 70 | std::vector<uint32_t> m_Palette; |
| 71 | // (Amount, Color) pairs |
| 72 | std::vector<std::pair<uint32_t, uint32_t>> m_Luts; |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 73 | int m_lut = 0; |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 74 | }; |
| 75 | |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 76 | CFX_Palette::CFX_Palette(const RetainPtr<const CFX_DIBBase>& pBitmap) |
| 77 | : m_Palette(256), m_Luts(4096) { |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 78 | int bpp = pBitmap->GetBPP() / 8; |
| 79 | int width = pBitmap->GetWidth(); |
| 80 | int height = pBitmap->GetHeight(); |
| 81 | for (int row = 0; row < height; ++row) { |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 82 | pdfium::span<const uint8_t> scan_line = pBitmap->GetScanline(row); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 83 | for (int col = 0; col < width; ++col) { |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 84 | const uint8_t* src_port = |
| 85 | scan_line.subspan(Fx2DSizeOrDie(col, bpp)).data(); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 86 | uint32_t b = src_port[0] & 0xf0; |
| 87 | uint32_t g = src_port[1] & 0xf0; |
| 88 | uint32_t r = src_port[2] & 0xf0; |
| 89 | uint32_t index = (r << 4) + g + (b >> 4); |
| 90 | ++m_Luts[index].first; |
| 91 | } |
| 92 | } |
| 93 | // Move non-zeros to the front and count them |
| 94 | for (int row = 0; row < 4096; ++row) { |
| 95 | if (m_Luts[row].first != 0) { |
| 96 | m_Luts[m_lut].first = m_Luts[row].first; |
| 97 | m_Luts[m_lut].second = row; |
| 98 | ++m_lut; |
| 99 | } |
| 100 | } |
| 101 | std::sort(m_Luts.begin(), m_Luts.begin() + m_lut, |
| 102 | [](const std::pair<uint32_t, uint32_t>& arg1, |
| 103 | const std::pair<uint32_t, uint32_t>& arg2) { |
| 104 | return arg1.first < arg2.first; |
| 105 | }); |
| 106 | Obtain_Pal(m_Luts.data(), m_Palette.data(), m_lut); |
| 107 | } |
| 108 | |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 109 | CFX_Palette::~CFX_Palette() = default; |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 110 | |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 111 | void ConvertBuffer_1bppMask2Gray(pdfium::span<uint8_t> dest_buf, |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 112 | int dest_pitch, |
| 113 | int width, |
| 114 | int height, |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 115 | const RetainPtr<const CFX_DIBBase>& pSrcBitmap, |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 116 | int src_left, |
| 117 | int src_top) { |
| 118 | static constexpr uint8_t kSetGray = 0xff; |
| 119 | static constexpr uint8_t kResetGray = 0x00; |
| 120 | for (int row = 0; row < height; ++row) { |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 121 | pdfium::span<uint8_t> dest_span = |
| 122 | dest_buf.subspan(Fx2DSizeOrDie(row, dest_pitch)); |
| 123 | pdfium::span<const uint8_t> src_span = |
| 124 | pSrcBitmap->GetScanline(src_top + row); |
| 125 | fxcrt::spanset(dest_span.first(width), kResetGray); |
| 126 | uint8_t* dest_scan = dest_span.data(); |
| 127 | const uint8_t* src_scan = src_span.data(); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 128 | for (int col = src_left; col < src_left + width; ++col) { |
| 129 | if (src_scan[col / 8] & (1 << (7 - col % 8))) |
| 130 | *dest_scan = kSetGray; |
| 131 | ++dest_scan; |
| 132 | } |
| 133 | } |
| 134 | } |
| 135 | |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 136 | void ConvertBuffer_8bppMask2Gray(pdfium::span<uint8_t> dest_buf, |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 137 | int dest_pitch, |
| 138 | int width, |
| 139 | int height, |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 140 | const RetainPtr<const CFX_DIBBase>& pSrcBitmap, |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 141 | int src_left, |
| 142 | int src_top) { |
| 143 | for (int row = 0; row < height; ++row) { |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 144 | fxcrt::spancpy( |
| 145 | dest_buf.subspan(Fx2DSizeOrDie(row, dest_pitch)), |
| 146 | pSrcBitmap->GetScanline(src_top + row).subspan(src_left, width)); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 147 | } |
| 148 | } |
| 149 | |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 150 | void ConvertBuffer_1bppPlt2Gray(pdfium::span<uint8_t> dest_buf, |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 151 | int dest_pitch, |
| 152 | int width, |
| 153 | int height, |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 154 | const RetainPtr<const CFX_DIBBase>& pSrcBitmap, |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 155 | int src_left, |
| 156 | int src_top) { |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 157 | pdfium::span<const uint32_t> src_palette = pSrcBitmap->GetPaletteSpan(); |
| 158 | const uint8_t reset_r = FXARGB_R(src_palette[0]); |
| 159 | const uint8_t reset_g = FXARGB_G(src_palette[0]); |
| 160 | const uint8_t reset_b = FXARGB_B(src_palette[0]); |
| 161 | const uint8_t set_r = FXARGB_R(src_palette[1]); |
| 162 | const uint8_t set_g = FXARGB_G(src_palette[1]); |
| 163 | const uint8_t set_b = FXARGB_B(src_palette[1]); |
| 164 | const uint8_t gray0 = FXRGB2GRAY(reset_r, reset_g, reset_b); |
| 165 | const uint8_t gray1 = FXRGB2GRAY(set_r, set_g, set_b); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 166 | |
| 167 | for (int row = 0; row < height; ++row) { |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 168 | pdfium::span<uint8_t> dest_span = |
| 169 | dest_buf.subspan(Fx2DSizeOrDie(row, dest_pitch)); |
| 170 | fxcrt::spanset(dest_span.first(width), gray0); |
| 171 | uint8_t* dest_scan = dest_span.data(); |
| 172 | const uint8_t* src_scan = pSrcBitmap->GetScanline(src_top + row).data(); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 173 | for (int col = src_left; col < src_left + width; ++col) { |
| 174 | if (src_scan[col / 8] & (1 << (7 - col % 8))) |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 175 | *dest_scan = gray1; |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 176 | ++dest_scan; |
| 177 | } |
| 178 | } |
| 179 | } |
| 180 | |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 181 | void ConvertBuffer_8bppPlt2Gray(pdfium::span<uint8_t> dest_buf, |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 182 | int dest_pitch, |
| 183 | int width, |
| 184 | int height, |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 185 | const RetainPtr<const CFX_DIBBase>& pSrcBitmap, |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 186 | int src_left, |
| 187 | int src_top) { |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 188 | pdfium::span<const uint32_t> src_palette = pSrcBitmap->GetPaletteSpan(); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 189 | uint8_t gray[256]; |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 190 | for (size_t i = 0; i < std::size(gray); ++i) { |
| 191 | gray[i] = FXRGB2GRAY(FXARGB_R(src_palette[i]), FXARGB_G(src_palette[i]), |
| 192 | FXARGB_B(src_palette[i])); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 193 | } |
| 194 | |
| 195 | for (int row = 0; row < height; ++row) { |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 196 | uint8_t* dest_scan = |
| 197 | dest_buf.subspan(Fx2DSizeOrDie(row, dest_pitch)).data(); |
| 198 | const uint8_t* src_scan = |
| 199 | pSrcBitmap->GetScanline(src_top + row).subspan(src_left).data(); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 200 | for (int col = 0; col < width; ++col) |
| 201 | *dest_scan++ = gray[*src_scan++]; |
| 202 | } |
| 203 | } |
| 204 | |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 205 | void ConvertBuffer_Rgb2Gray(pdfium::span<uint8_t> dest_buf, |
| 206 | int dest_pitch, |
| 207 | int width, |
| 208 | int height, |
| 209 | const RetainPtr<const CFX_DIBBase>& pSrcBitmap, |
| 210 | int src_left, |
| 211 | int src_top) { |
| 212 | const int Bpp = pSrcBitmap->GetBPP() / 8; |
| 213 | const size_t x_offset = Fx2DSizeOrDie(src_left, Bpp); |
| 214 | for (int row = 0; row < height; ++row) { |
| 215 | uint8_t* dest_scan = |
| 216 | dest_buf.subspan(Fx2DSizeOrDie(row, dest_pitch)).data(); |
| 217 | const uint8_t* src_scan = |
| 218 | pSrcBitmap->GetScanline(src_top + row).subspan(x_offset).data(); |
| 219 | for (int col = 0; col < width; ++col) { |
| 220 | *dest_scan++ = FXRGB2GRAY(src_scan[2], src_scan[1], src_scan[0]); |
| 221 | src_scan += Bpp; |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 222 | } |
| 223 | } |
| 224 | } |
| 225 | |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 226 | void ConvertBuffer_IndexCopy(pdfium::span<uint8_t> dest_buf, |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 227 | int dest_pitch, |
| 228 | int width, |
| 229 | int height, |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 230 | const RetainPtr<const CFX_DIBBase>& pSrcBitmap, |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 231 | int src_left, |
| 232 | int src_top) { |
| 233 | if (pSrcBitmap->GetBPP() == 1) { |
| 234 | for (int row = 0; row < height; ++row) { |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 235 | pdfium::span<uint8_t> dest_span = |
| 236 | dest_buf.subspan(Fx2DSizeOrDie(row, dest_pitch)); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 237 | // Set all destination pixels to be white initially. |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 238 | fxcrt::spanset(dest_span.first(width), 255); |
| 239 | uint8_t* dest_scan = dest_span.data(); |
| 240 | const uint8_t* src_scan = pSrcBitmap->GetScanline(src_top + row).data(); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 241 | for (int col = src_left; col < src_left + width; ++col) { |
| 242 | // If the source bit is set, then set the destination pixel to be black. |
| 243 | if (src_scan[col / 8] & (1 << (7 - col % 8))) |
| 244 | *dest_scan = 0; |
| 245 | |
| 246 | ++dest_scan; |
| 247 | } |
| 248 | } |
| 249 | } else { |
| 250 | for (int row = 0; row < height; ++row) { |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 251 | fxcrt::spancpy( |
| 252 | dest_buf.subspan(Fx2DSizeOrDie(row, dest_pitch)), |
| 253 | pSrcBitmap->GetScanline(src_top + row).subspan(src_left, width)); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 254 | } |
| 255 | } |
| 256 | } |
| 257 | |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 258 | void ConvertBuffer_Plt2PltRgb8(pdfium::span<uint8_t> dest_buf, |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 259 | int dest_pitch, |
| 260 | int width, |
| 261 | int height, |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 262 | const RetainPtr<const CFX_DIBBase>& pSrcBitmap, |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 263 | int src_left, |
| 264 | int src_top, |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 265 | pdfium::span<uint32_t> dst_plt) { |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 266 | ConvertBuffer_IndexCopy(dest_buf, dest_pitch, width, height, pSrcBitmap, |
| 267 | src_left, src_top); |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 268 | const size_t plt_size = pSrcBitmap->GetRequiredPaletteSize(); |
| 269 | pdfium::span<const uint32_t> src_span = pSrcBitmap->GetPaletteSpan(); |
| 270 | CHECK_LE(plt_size, src_span.size()); |
| 271 | |
| 272 | const uint32_t* src_plt = src_span.data(); |
| 273 | for (size_t i = 0; i < plt_size; ++i) |
| 274 | dst_plt[i] = src_plt[i]; |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 275 | } |
| 276 | |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 277 | void ConvertBuffer_Rgb2PltRgb8(pdfium::span<uint8_t> dest_buf, |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 278 | int dest_pitch, |
| 279 | int width, |
| 280 | int height, |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 281 | const RetainPtr<const CFX_DIBBase>& pSrcBitmap, |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 282 | int src_left, |
| 283 | int src_top, |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 284 | pdfium::span<uint32_t> dst_plt) { |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 285 | int bpp = pSrcBitmap->GetBPP() / 8; |
| 286 | CFX_Palette palette(pSrcBitmap); |
| 287 | const std::pair<uint32_t, uint32_t>* Luts = palette.GetLuts(); |
| 288 | int lut = palette.GetLutCount(); |
| 289 | const uint32_t* pal = palette.GetPalette(); |
| 290 | if (lut > 256) { |
| 291 | int err; |
| 292 | int min_err; |
| 293 | int lut_256 = lut - 256; |
| 294 | for (int row = 0; row < lut_256; ++row) { |
| 295 | min_err = 1000000; |
| 296 | uint8_t r; |
| 297 | uint8_t g; |
| 298 | uint8_t b; |
| 299 | ColorDecode(Luts[row].second, &r, &g, &b); |
| 300 | uint32_t clrindex = 0; |
| 301 | for (int col = 0; col < 256; ++col) { |
| 302 | uint32_t p_color = pal[col]; |
| 303 | int d_r = r - static_cast<uint8_t>(p_color >> 16); |
| 304 | int d_g = g - static_cast<uint8_t>(p_color >> 8); |
| 305 | int d_b = b - static_cast<uint8_t>(p_color); |
| 306 | err = d_r * d_r + d_g * d_g + d_b * d_b; |
| 307 | if (err < min_err) { |
| 308 | min_err = err; |
| 309 | clrindex = col; |
| 310 | } |
| 311 | } |
| 312 | palette.SetAmountLut(row, clrindex); |
| 313 | } |
| 314 | } |
| 315 | int32_t lut_1 = lut - 1; |
| 316 | for (int row = 0; row < height; ++row) { |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 317 | pdfium::span<const uint8_t> src_span = |
| 318 | pSrcBitmap->GetScanline(src_top + row).subspan(src_left); |
| 319 | uint8_t* dest_scan = |
| 320 | dest_buf.subspan(Fx2DSizeOrDie(row, dest_pitch)).data(); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 321 | for (int col = 0; col < width; ++col) { |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 322 | const uint8_t* src_port = |
| 323 | src_span.subspan(Fx2DSizeOrDie(col, bpp)).data(); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 324 | int r = src_port[2] & 0xf0; |
| 325 | int g = src_port[1] & 0xf0; |
| 326 | int b = src_port[0] & 0xf0; |
| 327 | uint32_t clrindex = (r << 4) + g + (b >> 4); |
| 328 | for (int i = lut_1; i >= 0; --i) |
| 329 | if (clrindex == Luts[i].second) { |
| 330 | *(dest_scan + col) = static_cast<uint8_t>(Luts[i].first); |
| 331 | break; |
| 332 | } |
| 333 | } |
| 334 | } |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 335 | for (size_t i = 0; i < 256; ++i) |
| 336 | dst_plt[i] = pal[i]; |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 337 | } |
| 338 | |
| 339 | void ConvertBuffer_1bppMask2Rgb(FXDIB_Format dest_format, |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 340 | pdfium::span<uint8_t> dest_buf, |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 341 | int dest_pitch, |
| 342 | int width, |
| 343 | int height, |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 344 | const RetainPtr<const CFX_DIBBase>& pSrcBitmap, |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 345 | int src_left, |
| 346 | int src_top) { |
| 347 | int comps = GetCompsFromFormat(dest_format); |
| 348 | static constexpr uint8_t kSetGray = 0xff; |
| 349 | static constexpr uint8_t kResetGray = 0x00; |
| 350 | for (int row = 0; row < height; ++row) { |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 351 | uint8_t* dest_scan = |
| 352 | dest_buf.subspan(Fx2DSizeOrDie(row, dest_pitch)).data(); |
| 353 | const uint8_t* src_scan = pSrcBitmap->GetScanline(src_top + row).data(); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 354 | for (int col = src_left; col < src_left + width; ++col) { |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 355 | uint8_t value = |
| 356 | (src_scan[col / 8] & (1 << (7 - col % 8))) ? kSetGray : kResetGray; |
| 357 | memset(dest_scan, value, 3); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 358 | dest_scan += comps; |
| 359 | } |
| 360 | } |
| 361 | } |
| 362 | |
| 363 | void ConvertBuffer_8bppMask2Rgb(FXDIB_Format dest_format, |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 364 | pdfium::span<uint8_t> dest_buf, |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 365 | int dest_pitch, |
| 366 | int width, |
| 367 | int height, |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 368 | const RetainPtr<const CFX_DIBBase>& pSrcBitmap, |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 369 | int src_left, |
| 370 | int src_top) { |
| 371 | int comps = GetCompsFromFormat(dest_format); |
| 372 | for (int row = 0; row < height; ++row) { |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 373 | uint8_t* dest_scan = |
| 374 | dest_buf.subspan(Fx2DSizeOrDie(row, dest_pitch)).data(); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 375 | const uint8_t* src_scan = |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 376 | pSrcBitmap->GetScanline(src_top + row).subspan(src_left).data(); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 377 | for (int col = 0; col < width; ++col) { |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 378 | memset(dest_scan, *src_scan, 3); |
| 379 | dest_scan += comps; |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 380 | ++src_scan; |
| 381 | } |
| 382 | } |
| 383 | } |
| 384 | |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 385 | void ConvertBuffer_1bppPlt2Rgb(FXDIB_Format dest_format, |
| 386 | pdfium::span<uint8_t> dest_buf, |
| 387 | int dest_pitch, |
| 388 | int width, |
| 389 | int height, |
| 390 | const RetainPtr<const CFX_DIBBase>& pSrcBitmap, |
| 391 | int src_left, |
| 392 | int src_top) { |
| 393 | pdfium::span<const uint32_t> src_palette = pSrcBitmap->GetPaletteSpan(); |
| 394 | const uint8_t dst_palette[6] = { |
| 395 | FXARGB_B(src_palette[0]), FXARGB_G(src_palette[0]), |
| 396 | FXARGB_R(src_palette[0]), FXARGB_B(src_palette[1]), |
| 397 | FXARGB_G(src_palette[1]), FXARGB_R(src_palette[1])}; |
| 398 | int comps = GetCompsFromFormat(dest_format); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 399 | for (int row = 0; row < height; ++row) { |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 400 | uint8_t* dest_scan = |
| 401 | dest_buf.subspan(Fx2DSizeOrDie(row, dest_pitch)).data(); |
| 402 | const uint8_t* src_scan = pSrcBitmap->GetScanline(src_top + row).data(); |
| 403 | for (int col = src_left; col < src_left + width; ++col) { |
| 404 | size_t offset = (src_scan[col / 8] & (1 << (7 - col % 8))) ? 3 : 0; |
| 405 | memcpy(dest_scan, dst_palette + offset, 3); |
| 406 | dest_scan += comps; |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 407 | } |
| 408 | } |
| 409 | } |
| 410 | |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 411 | void ConvertBuffer_8bppPlt2Rgb(FXDIB_Format dest_format, |
| 412 | pdfium::span<uint8_t> dest_buf, |
| 413 | int dest_pitch, |
| 414 | int width, |
| 415 | int height, |
| 416 | const RetainPtr<const CFX_DIBBase>& pSrcBitmap, |
| 417 | int src_left, |
| 418 | int src_top) { |
| 419 | pdfium::span<const uint32_t> src_palette = pSrcBitmap->GetPaletteSpan(); |
| 420 | uint8_t dst_palette[768]; |
| 421 | for (int i = 0; i < 256; ++i) { |
| 422 | dst_palette[3 * i] = FXARGB_B(src_palette[i]); |
| 423 | dst_palette[3 * i + 1] = FXARGB_G(src_palette[i]); |
| 424 | dst_palette[3 * i + 2] = FXARGB_R(src_palette[i]); |
| 425 | } |
| 426 | int comps = GetCompsFromFormat(dest_format); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 427 | for (int row = 0; row < height; ++row) { |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 428 | uint8_t* dest_scan = |
| 429 | dest_buf.subspan(Fx2DSizeOrDie(row, dest_pitch)).data(); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 430 | const uint8_t* src_scan = |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 431 | pSrcBitmap->GetScanline(src_top + row).subspan(src_left).data(); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 432 | for (int col = 0; col < width; ++col) { |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 433 | uint8_t* src_pixel = dst_palette + 3 * (*src_scan++); |
| 434 | memcpy(dest_scan, src_pixel, 3); |
| 435 | dest_scan += comps; |
| 436 | } |
| 437 | } |
| 438 | } |
| 439 | |
| 440 | void ConvertBuffer_24bppRgb2Rgb24( |
| 441 | pdfium::span<uint8_t> dest_buf, |
| 442 | int dest_pitch, |
| 443 | int width, |
| 444 | int height, |
| 445 | const RetainPtr<const CFX_DIBBase>& pSrcBitmap, |
| 446 | int src_left, |
| 447 | int src_top) { |
| 448 | const size_t x_offset = Fx2DSizeOrDie(src_left, 3); |
| 449 | const size_t byte_count = Fx2DSizeOrDie(width, 3); |
| 450 | for (int row = 0; row < height; ++row) { |
| 451 | fxcrt::spancpy( |
| 452 | dest_buf.subspan(Fx2DSizeOrDie(row, dest_pitch)), |
| 453 | pSrcBitmap->GetScanline(src_top + row).subspan(x_offset, byte_count)); |
| 454 | } |
| 455 | } |
| 456 | |
| 457 | void ConvertBuffer_32bppRgb2Rgb24( |
| 458 | pdfium::span<uint8_t> dest_buf, |
| 459 | int dest_pitch, |
| 460 | int width, |
| 461 | int height, |
| 462 | const RetainPtr<const CFX_DIBBase>& pSrcBitmap, |
| 463 | int src_left, |
| 464 | int src_top) { |
| 465 | const size_t x_offset = Fx2DSizeOrDie(src_left, 4); |
| 466 | for (int row = 0; row < height; ++row) { |
| 467 | uint8_t* dest_scan = |
| 468 | dest_buf.subspan(Fx2DSizeOrDie(row, dest_pitch)).data(); |
| 469 | const uint8_t* src_scan = |
| 470 | pSrcBitmap->GetScanline(src_top + row).subspan(x_offset).data(); |
| 471 | for (int col = 0; col < width; ++col) { |
| 472 | memcpy(dest_scan, src_scan, 3); |
| 473 | dest_scan += 3; |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 474 | src_scan += 4; |
| 475 | } |
| 476 | } |
| 477 | } |
| 478 | |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 479 | void ConvertBuffer_Rgb2Rgb32(pdfium::span<uint8_t> dest_buf, |
| 480 | int dest_pitch, |
| 481 | int width, |
| 482 | int height, |
| 483 | const RetainPtr<const CFX_DIBBase>& pSrcBitmap, |
| 484 | int src_left, |
| 485 | int src_top) { |
| 486 | const int comps = pSrcBitmap->GetBPP() / 8; |
| 487 | const size_t x_offset = Fx2DSizeOrDie(src_left, comps); |
| 488 | for (int row = 0; row < height; ++row) { |
| 489 | uint8_t* dest_scan = |
| 490 | dest_buf.subspan(Fx2DSizeOrDie(row, dest_pitch)).data(); |
| 491 | const uint8_t* src_scan = |
| 492 | pSrcBitmap->GetScanline(src_top + row).subspan(x_offset).data(); |
| 493 | for (int col = 0; col < width; ++col) { |
| 494 | memcpy(dest_scan, src_scan, 3); |
| 495 | dest_scan += 4; |
| 496 | src_scan += comps; |
| 497 | } |
| 498 | } |
| 499 | } |
| 500 | |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 501 | bool ConvertBuffer_8bppMask(int bpp, |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 502 | pdfium::span<uint8_t> dest_buf, |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 503 | int dest_pitch, |
| 504 | int width, |
| 505 | int height, |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 506 | const RetainPtr<const CFX_DIBBase>& pSrcBitmap, |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 507 | int src_left, |
| 508 | int src_top) { |
| 509 | switch (bpp) { |
| 510 | case 1: |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 511 | if (pSrcBitmap->HasPalette()) { |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 512 | ConvertBuffer_1bppPlt2Gray(dest_buf, dest_pitch, width, height, |
| 513 | pSrcBitmap, src_left, src_top); |
| 514 | } else { |
| 515 | ConvertBuffer_1bppMask2Gray(dest_buf, dest_pitch, width, height, |
| 516 | pSrcBitmap, src_left, src_top); |
| 517 | } |
| 518 | return true; |
| 519 | case 8: |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 520 | if (pSrcBitmap->HasPalette()) { |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 521 | ConvertBuffer_8bppPlt2Gray(dest_buf, dest_pitch, width, height, |
| 522 | pSrcBitmap, src_left, src_top); |
| 523 | } else { |
| 524 | ConvertBuffer_8bppMask2Gray(dest_buf, dest_pitch, width, height, |
| 525 | pSrcBitmap, src_left, src_top); |
| 526 | } |
| 527 | return true; |
| 528 | case 24: |
| 529 | case 32: |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 530 | ConvertBuffer_Rgb2Gray(dest_buf, dest_pitch, width, height, pSrcBitmap, |
| 531 | src_left, src_top); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 532 | return true; |
| 533 | default: |
| 534 | return false; |
| 535 | } |
| 536 | } |
| 537 | |
| 538 | bool ConvertBuffer_Rgb(int bpp, |
| 539 | FXDIB_Format dest_format, |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 540 | pdfium::span<uint8_t> dest_buf, |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 541 | int dest_pitch, |
| 542 | int width, |
| 543 | int height, |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 544 | const RetainPtr<const CFX_DIBBase>& pSrcBitmap, |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 545 | int src_left, |
| 546 | int src_top) { |
| 547 | switch (bpp) { |
| 548 | case 1: |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 549 | if (pSrcBitmap->HasPalette()) { |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 550 | ConvertBuffer_1bppPlt2Rgb(dest_format, dest_buf, dest_pitch, width, |
| 551 | height, pSrcBitmap, src_left, src_top); |
| 552 | } else { |
| 553 | ConvertBuffer_1bppMask2Rgb(dest_format, dest_buf, dest_pitch, width, |
| 554 | height, pSrcBitmap, src_left, src_top); |
| 555 | } |
| 556 | return true; |
| 557 | case 8: |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 558 | if (pSrcBitmap->HasPalette()) { |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 559 | ConvertBuffer_8bppPlt2Rgb(dest_format, dest_buf, dest_pitch, width, |
| 560 | height, pSrcBitmap, src_left, src_top); |
| 561 | } else { |
| 562 | ConvertBuffer_8bppMask2Rgb(dest_format, dest_buf, dest_pitch, width, |
| 563 | height, pSrcBitmap, src_left, src_top); |
| 564 | } |
| 565 | return true; |
| 566 | case 24: |
| 567 | ConvertBuffer_24bppRgb2Rgb24(dest_buf, dest_pitch, width, height, |
| 568 | pSrcBitmap, src_left, src_top); |
| 569 | return true; |
| 570 | case 32: |
| 571 | ConvertBuffer_32bppRgb2Rgb24(dest_buf, dest_pitch, width, height, |
| 572 | pSrcBitmap, src_left, src_top); |
| 573 | return true; |
| 574 | default: |
| 575 | return false; |
| 576 | } |
| 577 | } |
| 578 | |
| 579 | bool ConvertBuffer_Argb(int bpp, |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 580 | FXDIB_Format dest_format, |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 581 | pdfium::span<uint8_t> dest_buf, |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 582 | int dest_pitch, |
| 583 | int width, |
| 584 | int height, |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 585 | const RetainPtr<const CFX_DIBBase>& pSrcBitmap, |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 586 | int src_left, |
| 587 | int src_top) { |
| 588 | switch (bpp) { |
| 589 | case 1: |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 590 | if (pSrcBitmap->HasPalette()) { |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 591 | ConvertBuffer_1bppPlt2Rgb(dest_format, dest_buf, dest_pitch, width, |
| 592 | height, pSrcBitmap, src_left, src_top); |
| 593 | } else { |
| 594 | ConvertBuffer_1bppMask2Rgb(dest_format, dest_buf, dest_pitch, width, |
| 595 | height, pSrcBitmap, src_left, src_top); |
| 596 | } |
| 597 | return true; |
| 598 | case 8: |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 599 | if (pSrcBitmap->HasPalette()) { |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 600 | ConvertBuffer_8bppPlt2Rgb(dest_format, dest_buf, dest_pitch, width, |
| 601 | height, pSrcBitmap, src_left, src_top); |
| 602 | } else { |
| 603 | ConvertBuffer_8bppMask2Rgb(dest_format, dest_buf, dest_pitch, width, |
| 604 | height, pSrcBitmap, src_left, src_top); |
| 605 | } |
| 606 | return true; |
| 607 | case 24: |
| 608 | case 32: |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 609 | ConvertBuffer_Rgb2Rgb32(dest_buf, dest_pitch, width, height, pSrcBitmap, |
| 610 | src_left, src_top); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 611 | return true; |
| 612 | default: |
| 613 | return false; |
| 614 | } |
| 615 | } |
| 616 | |
| 617 | } // namespace |
| 618 | |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 619 | CFX_DIBBase::CFX_DIBBase() = default; |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 620 | |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 621 | CFX_DIBBase::~CFX_DIBBase() = default; |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 622 | |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 623 | pdfium::span<uint8_t> CFX_DIBBase::GetBuffer() const { |
| 624 | return pdfium::span<uint8_t>(); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 625 | } |
| 626 | |
| 627 | bool CFX_DIBBase::SkipToScanline(int line, PauseIndicatorIface* pPause) const { |
| 628 | return false; |
| 629 | } |
| 630 | |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 631 | size_t CFX_DIBBase::GetEstimatedImageMemoryBurden() const { |
| 632 | return GetRequiredPaletteSize() * sizeof(uint32_t); |
| 633 | } |
| 634 | |
| 635 | RetainPtr<CFX_DIBitmap> CFX_DIBBase::Realize() const { |
| 636 | return ClipToInternal(nullptr); |
| 637 | } |
| 638 | |
| 639 | RetainPtr<CFX_DIBitmap> CFX_DIBBase::ClipTo(const FX_RECT& rect) const { |
| 640 | return ClipToInternal(&rect); |
| 641 | } |
| 642 | |
| 643 | RetainPtr<CFX_DIBitmap> CFX_DIBBase::ClipToInternal( |
| 644 | const FX_RECT* pClip) const { |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 645 | FX_RECT rect(0, 0, m_Width, m_Height); |
| 646 | if (pClip) { |
| 647 | rect.Intersect(*pClip); |
| 648 | if (rect.IsEmpty()) |
| 649 | return nullptr; |
| 650 | } |
| 651 | auto pNewBitmap = pdfium::MakeRetain<CFX_DIBitmap>(); |
| 652 | if (!pNewBitmap->Create(rect.Width(), rect.Height(), GetFormat())) |
| 653 | return nullptr; |
| 654 | |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 655 | pNewBitmap->SetPalette(GetPaletteSpan()); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 656 | if (GetBPP() == 1 && rect.left % 8 != 0) { |
| 657 | int left_shift = rect.left % 32; |
| 658 | int right_shift = 32 - left_shift; |
| 659 | int dword_count = pNewBitmap->m_Pitch / 4; |
| 660 | for (int row = rect.top; row < rect.bottom; ++row) { |
| 661 | const uint32_t* src_scan = |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 662 | reinterpret_cast<const uint32_t*>(GetScanline(row).data()) + |
| 663 | rect.left / 32; |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 664 | uint32_t* dest_scan = reinterpret_cast<uint32_t*>( |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 665 | pNewBitmap->GetWritableScanline(row - rect.top).data()); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 666 | for (int i = 0; i < dword_count; ++i) { |
| 667 | dest_scan[i] = |
| 668 | (src_scan[i] << left_shift) | (src_scan[i + 1] >> right_shift); |
| 669 | } |
| 670 | } |
| 671 | } else { |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 672 | FX_SAFE_UINT32 copy_len = pNewBitmap->GetWidth(); |
| 673 | copy_len *= pNewBitmap->GetBPP(); |
| 674 | copy_len += 7; |
| 675 | copy_len /= 8; |
| 676 | if (!copy_len.IsValid()) |
| 677 | return nullptr; |
| 678 | |
| 679 | copy_len = std::min<uint32_t>(m_Pitch, copy_len.ValueOrDie()); |
| 680 | |
| 681 | FX_SAFE_UINT32 offset = rect.left; |
| 682 | offset *= GetBppFromFormat(m_Format); |
| 683 | offset /= 8; |
| 684 | if (!offset.IsValid()) |
| 685 | return nullptr; |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 686 | |
| 687 | for (int row = rect.top; row < rect.bottom; ++row) { |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 688 | const uint8_t* src_scan = |
| 689 | GetScanline(row).subspan(offset.ValueOrDie()).data(); |
| 690 | uint8_t* dest_scan = |
| 691 | pNewBitmap->GetWritableScanline(row - rect.top).data(); |
| 692 | memcpy(dest_scan, src_scan, copy_len.ValueOrDie()); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 693 | } |
| 694 | } |
| 695 | return pNewBitmap; |
| 696 | } |
| 697 | |
| 698 | void CFX_DIBBase::BuildPalette() { |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 699 | if (HasPalette()) |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 700 | return; |
| 701 | |
| 702 | if (GetBPP() == 1) { |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 703 | m_palette = {0xff000000, 0xffffffff}; |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 704 | } else if (GetBPP() == 8) { |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 705 | m_palette.resize(256); |
| 706 | for (int i = 0; i < 256; ++i) |
| 707 | m_palette[i] = ArgbEncode(0xff, i, i, i); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 708 | } |
| 709 | } |
| 710 | |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 711 | size_t CFX_DIBBase::GetRequiredPaletteSize() const { |
| 712 | if (IsMaskFormat()) |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 713 | return 0; |
| 714 | |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 715 | switch (GetBppFromFormat(m_Format)) { |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 716 | case 1: |
| 717 | return 2; |
| 718 | case 8: |
| 719 | return 256; |
| 720 | default: |
| 721 | return 0; |
| 722 | } |
| 723 | } |
| 724 | |
| 725 | uint32_t CFX_DIBBase::GetPaletteArgb(int index) const { |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 726 | DCHECK((GetBPP() == 1 || GetBPP() == 8) && !IsMaskFormat()); |
| 727 | if (HasPalette()) |
| 728 | return GetPaletteSpan()[index]; |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 729 | |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 730 | if (GetBPP() == 1) |
| 731 | return index ? 0xffffffff : 0xff000000; |
| 732 | |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 733 | return ArgbEncode(0xff, index, index, index); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 734 | } |
| 735 | |
| 736 | void CFX_DIBBase::SetPaletteArgb(int index, uint32_t color) { |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 737 | DCHECK((GetBPP() == 1 || GetBPP() == 8) && !IsMaskFormat()); |
| 738 | BuildPalette(); |
| 739 | m_palette[index] = color; |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 740 | } |
| 741 | |
| 742 | int CFX_DIBBase::FindPalette(uint32_t color) const { |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 743 | DCHECK((GetBPP() == 1 || GetBPP() == 8) && !IsMaskFormat()); |
| 744 | if (HasPalette()) { |
| 745 | int palsize = (1 << GetBPP()); |
| 746 | pdfium::span<const uint32_t> palette = GetPaletteSpan(); |
| 747 | for (int i = 0; i < palsize; ++i) { |
| 748 | if (palette[i] == color) |
| 749 | return i; |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 750 | } |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 751 | return -1; |
| 752 | } |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 753 | |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 754 | if (GetBPP() == 1) |
| 755 | return (static_cast<uint8_t>(color) == 0xff) ? 1 : 0; |
| 756 | return static_cast<uint8_t>(color); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 757 | } |
| 758 | |
| 759 | bool CFX_DIBBase::GetOverlapRect(int& dest_left, |
| 760 | int& dest_top, |
| 761 | int& width, |
| 762 | int& height, |
| 763 | int src_width, |
| 764 | int src_height, |
| 765 | int& src_left, |
| 766 | int& src_top, |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 767 | const CFX_ClipRgn* pClipRgn) const { |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 768 | if (width == 0 || height == 0) |
| 769 | return false; |
| 770 | |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 771 | DCHECK_GT(width, 0); |
| 772 | DCHECK_GT(height, 0); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 773 | |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 774 | if (dest_left > m_Width || dest_top > m_Height) |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 775 | return false; |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 776 | |
| 777 | FX_SAFE_INT32 safe_src_width = src_left; |
| 778 | safe_src_width += width; |
| 779 | if (!safe_src_width.IsValid()) |
| 780 | return false; |
| 781 | |
| 782 | FX_SAFE_INT32 safe_src_height = src_top; |
| 783 | safe_src_height += height; |
| 784 | if (!safe_src_height.IsValid()) |
| 785 | return false; |
| 786 | |
| 787 | FX_RECT src_rect(src_left, src_top, safe_src_width.ValueOrDie(), |
| 788 | safe_src_height.ValueOrDie()); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 789 | FX_RECT src_bound(0, 0, src_width, src_height); |
| 790 | src_rect.Intersect(src_bound); |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 791 | |
| 792 | FX_SAFE_INT32 safe_x_offset = dest_left; |
| 793 | safe_x_offset -= src_left; |
| 794 | if (!safe_x_offset.IsValid()) |
| 795 | return false; |
| 796 | |
| 797 | FX_SAFE_INT32 safe_y_offset = dest_top; |
| 798 | safe_y_offset -= src_top; |
| 799 | if (!safe_y_offset.IsValid()) |
| 800 | return false; |
| 801 | |
| 802 | FX_SAFE_INT32 safe_dest_left = safe_x_offset; |
| 803 | safe_dest_left += src_rect.left; |
| 804 | if (!safe_dest_left.IsValid()) |
| 805 | return false; |
| 806 | |
| 807 | FX_SAFE_INT32 safe_dest_top = safe_y_offset; |
| 808 | safe_dest_top += src_rect.top; |
| 809 | if (!safe_dest_top.IsValid()) |
| 810 | return false; |
| 811 | |
| 812 | FX_SAFE_INT32 safe_dest_right = safe_x_offset; |
| 813 | safe_dest_right += src_rect.right; |
| 814 | if (!safe_dest_right.IsValid()) |
| 815 | return false; |
| 816 | |
| 817 | FX_SAFE_INT32 safe_dest_bottom = safe_y_offset; |
| 818 | safe_dest_bottom += src_rect.bottom; |
| 819 | if (!safe_dest_bottom.IsValid()) |
| 820 | return false; |
| 821 | |
| 822 | FX_RECT dest_rect(safe_dest_left.ValueOrDie(), safe_dest_top.ValueOrDie(), |
| 823 | safe_dest_right.ValueOrDie(), |
| 824 | safe_dest_bottom.ValueOrDie()); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 825 | FX_RECT dest_bound(0, 0, m_Width, m_Height); |
| 826 | dest_rect.Intersect(dest_bound); |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 827 | |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 828 | if (pClipRgn) |
| 829 | dest_rect.Intersect(pClipRgn->GetBox()); |
| 830 | dest_left = dest_rect.left; |
| 831 | dest_top = dest_rect.top; |
| 832 | |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 833 | FX_SAFE_INT32 safe_new_src_left = dest_left; |
| 834 | safe_new_src_left -= safe_x_offset; |
| 835 | if (!safe_new_src_left.IsValid()) |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 836 | return false; |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 837 | src_left = safe_new_src_left.ValueOrDie(); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 838 | |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 839 | FX_SAFE_INT32 safe_new_src_top = dest_top; |
| 840 | safe_new_src_top -= safe_y_offset; |
| 841 | if (!safe_new_src_top.IsValid()) |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 842 | return false; |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 843 | src_top = safe_new_src_top.ValueOrDie(); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 844 | |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 845 | if (dest_rect.IsEmpty()) |
| 846 | return false; |
| 847 | |
| 848 | width = dest_rect.Width(); |
| 849 | height = dest_rect.Height(); |
| 850 | return true; |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 851 | } |
| 852 | |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 853 | void CFX_DIBBase::SetPalette(pdfium::span<const uint32_t> src_palette) { |
| 854 | if (src_palette.empty() || GetBPP() > 8) { |
| 855 | m_palette.clear(); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 856 | return; |
| 857 | } |
| 858 | uint32_t pal_size = 1 << GetBPP(); |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 859 | if (m_palette.empty()) |
| 860 | m_palette.resize(pal_size); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 861 | pal_size = std::min(pal_size, kPaletteSize); |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 862 | for (size_t i = 0; i < pal_size; ++i) |
| 863 | m_palette[i] = src_palette[i]; |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 864 | } |
| 865 | |
| 866 | RetainPtr<CFX_DIBitmap> CFX_DIBBase::CloneAlphaMask() const { |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 867 | DCHECK_EQ(GetFormat(), FXDIB_Format::kArgb); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 868 | auto pMask = pdfium::MakeRetain<CFX_DIBitmap>(); |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 869 | if (!pMask->Create(m_Width, m_Height, FXDIB_Format::k8bppMask)) |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 870 | return nullptr; |
| 871 | |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 872 | for (int row = 0; row < m_Height; ++row) { |
| 873 | const uint8_t* src_scan = GetScanline(row).subspan(3).data(); |
| 874 | uint8_t* dest_scan = pMask->GetWritableScanline(row).data(); |
| 875 | for (int col = 0; col < m_Width; ++col) { |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 876 | *dest_scan++ = *src_scan; |
| 877 | src_scan += 4; |
| 878 | } |
| 879 | } |
| 880 | return pMask; |
| 881 | } |
| 882 | |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 883 | RetainPtr<CFX_DIBitmap> CFX_DIBBase::FlipImage(bool bXFlip, bool bYFlip) const { |
| 884 | auto pFlipped = pdfium::MakeRetain<CFX_DIBitmap>(); |
| 885 | if (!pFlipped->Create(m_Width, m_Height, GetFormat())) |
| 886 | return nullptr; |
| 887 | |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 888 | pFlipped->SetPalette(GetPaletteSpan()); |
| 889 | int Bpp = GetBppFromFormat(m_Format) / 8; |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 890 | for (int row = 0; row < m_Height; ++row) { |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 891 | const uint8_t* src_scan = GetScanline(row).data(); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 892 | uint8_t* dest_scan = |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 893 | pFlipped->GetWritableScanline(bYFlip ? m_Height - row - 1 : row).data(); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 894 | if (!bXFlip) { |
| 895 | memcpy(dest_scan, src_scan, m_Pitch); |
| 896 | continue; |
| 897 | } |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 898 | if (GetBppFromFormat(m_Format) == 1) { |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 899 | memset(dest_scan, 0, m_Pitch); |
| 900 | for (int col = 0; col < m_Width; ++col) { |
| 901 | if (src_scan[col / 8] & (1 << (7 - col % 8))) { |
| 902 | int dest_col = m_Width - col - 1; |
| 903 | dest_scan[dest_col / 8] |= (1 << (7 - dest_col % 8)); |
| 904 | } |
| 905 | } |
| 906 | continue; |
| 907 | } |
| 908 | |
| 909 | dest_scan += (m_Width - 1) * Bpp; |
| 910 | if (Bpp == 1) { |
| 911 | for (int col = 0; col < m_Width; ++col) { |
| 912 | *dest_scan = *src_scan; |
| 913 | --dest_scan; |
| 914 | ++src_scan; |
| 915 | } |
| 916 | } else if (Bpp == 3) { |
| 917 | for (int col = 0; col < m_Width; ++col) { |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 918 | memcpy(dest_scan, src_scan, 3); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 919 | dest_scan -= 3; |
| 920 | src_scan += 3; |
| 921 | } |
| 922 | } else { |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 923 | DCHECK_EQ(Bpp, 4); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 924 | for (int col = 0; col < m_Width; ++col) { |
| 925 | const auto* src_scan32 = reinterpret_cast<const uint32_t*>(src_scan); |
| 926 | uint32_t* dest_scan32 = reinterpret_cast<uint32_t*>(dest_scan); |
| 927 | *dest_scan32 = *src_scan32; |
| 928 | dest_scan -= 4; |
| 929 | src_scan += 4; |
| 930 | } |
| 931 | } |
| 932 | } |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 933 | return pFlipped; |
| 934 | } |
| 935 | |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 936 | RetainPtr<CFX_DIBitmap> CFX_DIBBase::ConvertTo(FXDIB_Format dest_format) const { |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 937 | if (dest_format == GetFormat()) |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 938 | return Realize(); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 939 | |
| 940 | auto pClone = pdfium::MakeRetain<CFX_DIBitmap>(); |
| 941 | if (!pClone->Create(m_Width, m_Height, dest_format)) |
| 942 | return nullptr; |
| 943 | |
| 944 | RetainPtr<CFX_DIBitmap> pSrcAlpha; |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 945 | if (IsAlphaFormat()) { |
| 946 | pSrcAlpha = CloneAlphaMask(); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 947 | if (!pSrcAlpha) |
| 948 | return nullptr; |
| 949 | } |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 950 | if (dest_format == FXDIB_Format::kArgb) { |
| 951 | bool ret = pSrcAlpha ? pClone->SetAlphaFromBitmap(pSrcAlpha) |
| 952 | : pClone->SetUniformOpaqueAlpha(); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 953 | if (!ret) |
| 954 | return nullptr; |
| 955 | } |
| 956 | |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 957 | RetainPtr<const CFX_DIBBase> holder(this); |
| 958 | DataVector<uint32_t> pal_8bpp; |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 959 | if (!ConvertBuffer(dest_format, pClone->GetBuffer(), pClone->GetPitch(), |
| 960 | m_Width, m_Height, holder, 0, 0, &pal_8bpp)) { |
| 961 | return nullptr; |
| 962 | } |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 963 | if (!pal_8bpp.empty()) |
| 964 | pClone->SetPalette(pal_8bpp); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 965 | |
| 966 | return pClone; |
| 967 | } |
| 968 | |
| 969 | RetainPtr<CFX_DIBitmap> CFX_DIBBase::SwapXY(bool bXFlip, bool bYFlip) const { |
| 970 | FX_RECT dest_clip(0, 0, m_Height, m_Width); |
| 971 | if (dest_clip.IsEmpty()) |
| 972 | return nullptr; |
| 973 | |
| 974 | auto pTransBitmap = pdfium::MakeRetain<CFX_DIBitmap>(); |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 975 | const int result_height = dest_clip.Height(); |
| 976 | const int result_width = dest_clip.Width(); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 977 | if (!pTransBitmap->Create(result_width, result_height, GetFormat())) |
| 978 | return nullptr; |
| 979 | |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 980 | pTransBitmap->SetPalette(GetPaletteSpan()); |
| 981 | const int dest_pitch = pTransBitmap->GetPitch(); |
| 982 | pdfium::span<uint8_t> dest_span = |
| 983 | pTransBitmap->GetBuffer().first(Fx2DSizeOrDie(dest_pitch, result_height)); |
| 984 | const size_t dest_last_row_offset = |
| 985 | Fx2DSizeOrDie(dest_pitch, result_height - 1); |
| 986 | const int row_start = bXFlip ? m_Height - dest_clip.right : dest_clip.left; |
| 987 | const int row_end = bXFlip ? m_Height - dest_clip.left : dest_clip.right; |
| 988 | const int col_start = bYFlip ? m_Width - dest_clip.bottom : dest_clip.top; |
| 989 | const int col_end = bYFlip ? m_Width - dest_clip.top : dest_clip.bottom; |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 990 | if (GetBPP() == 1) { |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 991 | fxcrt::spanset(dest_span, 0xff); |
| 992 | if (bYFlip) |
| 993 | dest_span = dest_span.subspan(dest_last_row_offset); |
| 994 | const int dest_step = bYFlip ? -dest_pitch : dest_pitch; |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 995 | for (int row = row_start; row < row_end; ++row) { |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 996 | const uint8_t* src_scan = GetScanline(row).data(); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 997 | int dest_col = (bXFlip ? dest_clip.right - (row - row_start) - 1 : row) - |
| 998 | dest_clip.left; |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 999 | uint8_t* dest_scan = dest_span.data(); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 1000 | for (int col = col_start; col < col_end; ++col) { |
| 1001 | if (!(src_scan[col / 8] & (1 << (7 - col % 8)))) |
| 1002 | dest_scan[dest_col / 8] &= ~(1 << (7 - dest_col % 8)); |
| 1003 | dest_scan += dest_step; |
| 1004 | } |
| 1005 | } |
| 1006 | } else { |
| 1007 | int nBytes = GetBPP() / 8; |
| 1008 | int dest_step = bYFlip ? -dest_pitch : dest_pitch; |
| 1009 | if (nBytes == 3) |
| 1010 | dest_step -= 2; |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 1011 | if (bYFlip) |
| 1012 | dest_span = dest_span.subspan(dest_last_row_offset); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 1013 | for (int row = row_start; row < row_end; ++row) { |
| 1014 | int dest_col = (bXFlip ? dest_clip.right - (row - row_start) - 1 : row) - |
| 1015 | dest_clip.left; |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 1016 | size_t dest_offset = Fx2DSizeOrDie(dest_col, nBytes); |
| 1017 | uint8_t* dest_scan = dest_span.subspan(dest_offset).data(); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 1018 | if (nBytes == 4) { |
| 1019 | const uint32_t* src_scan = |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 1020 | reinterpret_cast<const uint32_t*>(GetScanline(row).data()) + |
| 1021 | col_start; |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 1022 | for (int col = col_start; col < col_end; ++col) { |
| 1023 | uint32_t* dest_scan32 = reinterpret_cast<uint32_t*>(dest_scan); |
| 1024 | *dest_scan32 = *src_scan++; |
| 1025 | dest_scan += dest_step; |
| 1026 | } |
| 1027 | } else { |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 1028 | const uint8_t* src_scan = |
| 1029 | GetScanline(row).subspan(col_start * nBytes).data(); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 1030 | if (nBytes == 1) { |
| 1031 | for (int col = col_start; col < col_end; ++col) { |
| 1032 | *dest_scan = *src_scan++; |
| 1033 | dest_scan += dest_step; |
| 1034 | } |
| 1035 | } else { |
| 1036 | for (int col = col_start; col < col_end; ++col) { |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 1037 | memcpy(dest_scan, src_scan, 3); |
| 1038 | dest_scan += 2 + dest_step; |
| 1039 | src_scan += 3; |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 1040 | } |
| 1041 | } |
| 1042 | } |
| 1043 | } |
| 1044 | } |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 1045 | return pTransBitmap; |
| 1046 | } |
| 1047 | |
| 1048 | RetainPtr<CFX_DIBitmap> CFX_DIBBase::TransformTo(const CFX_Matrix& mtDest, |
| 1049 | int* result_left, |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 1050 | int* result_top) const { |
| 1051 | RetainPtr<const CFX_DIBBase> holder(this); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 1052 | CFX_ImageTransformer transformer(holder, mtDest, FXDIB_ResampleOptions(), |
| 1053 | nullptr); |
| 1054 | transformer.Continue(nullptr); |
| 1055 | *result_left = transformer.result().left; |
| 1056 | *result_top = transformer.result().top; |
| 1057 | return transformer.DetachBitmap(); |
| 1058 | } |
| 1059 | |
| 1060 | RetainPtr<CFX_DIBitmap> CFX_DIBBase::StretchTo( |
| 1061 | int dest_width, |
| 1062 | int dest_height, |
| 1063 | const FXDIB_ResampleOptions& options, |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 1064 | const FX_RECT* pClip) const { |
| 1065 | RetainPtr<const CFX_DIBBase> holder(this); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 1066 | FX_RECT clip_rect(0, 0, abs(dest_width), abs(dest_height)); |
| 1067 | if (pClip) |
| 1068 | clip_rect.Intersect(*pClip); |
| 1069 | |
| 1070 | if (clip_rect.IsEmpty()) |
| 1071 | return nullptr; |
| 1072 | |
| 1073 | if (dest_width == m_Width && dest_height == m_Height) |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 1074 | return ClipTo(clip_rect); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 1075 | |
| 1076 | CFX_BitmapStorer storer; |
| 1077 | CFX_ImageStretcher stretcher(&storer, holder, dest_width, dest_height, |
| 1078 | clip_rect, options); |
| 1079 | if (stretcher.Start()) |
| 1080 | stretcher.Continue(nullptr); |
| 1081 | |
| 1082 | return storer.Detach(); |
| 1083 | } |
| 1084 | |
| 1085 | // static |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 1086 | bool CFX_DIBBase::ConvertBuffer(FXDIB_Format dest_format, |
| 1087 | pdfium::span<uint8_t> dest_buf, |
| 1088 | int dest_pitch, |
| 1089 | int width, |
| 1090 | int height, |
| 1091 | const RetainPtr<const CFX_DIBBase>& pSrcBitmap, |
| 1092 | int src_left, |
| 1093 | int src_top, |
| 1094 | DataVector<uint32_t>* pal) { |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 1095 | FXDIB_Format src_format = pSrcBitmap->GetFormat(); |
| 1096 | const int bpp = GetBppFromFormat(src_format); |
| 1097 | switch (dest_format) { |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 1098 | case FXDIB_Format::k8bppMask: { |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 1099 | return ConvertBuffer_8bppMask(bpp, dest_buf, dest_pitch, width, height, |
| 1100 | pSrcBitmap, src_left, src_top); |
| 1101 | } |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 1102 | case FXDIB_Format::k8bppRgb: { |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 1103 | const bool bpp_1_or_8 = (bpp == 1 || bpp == 8); |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 1104 | if (bpp_1_or_8 && !pSrcBitmap->HasPalette()) { |
| 1105 | return ConvertBuffer(FXDIB_Format::k8bppMask, dest_buf, dest_pitch, |
| 1106 | width, height, pSrcBitmap, src_left, src_top, pal); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 1107 | } |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 1108 | pal->resize(256); |
| 1109 | if (bpp_1_or_8 && pSrcBitmap->HasPalette()) { |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 1110 | ConvertBuffer_Plt2PltRgb8(dest_buf, dest_pitch, width, height, |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 1111 | pSrcBitmap, src_left, src_top, *pal); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 1112 | return true; |
| 1113 | } |
| 1114 | if (bpp >= 24) { |
| 1115 | ConvertBuffer_Rgb2PltRgb8(dest_buf, dest_pitch, width, height, |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 1116 | pSrcBitmap, src_left, src_top, *pal); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 1117 | return true; |
| 1118 | } |
| 1119 | return false; |
| 1120 | } |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 1121 | case FXDIB_Format::kRgb: { |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 1122 | return ConvertBuffer_Rgb(bpp, dest_format, dest_buf, dest_pitch, width, |
| 1123 | height, pSrcBitmap, src_left, src_top); |
| 1124 | } |
kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 1125 | case FXDIB_Format::kArgb: |
| 1126 | case FXDIB_Format::kRgb32: { |
| 1127 | return ConvertBuffer_Argb(bpp, dest_format, dest_buf, dest_pitch, width, |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 1128 | height, pSrcBitmap, src_left, src_top); |
| 1129 | } |
| 1130 | default: |
| 1131 | NOTREACHED(); |
| 1132 | return false; |
| 1133 | } |
| 1134 | } |