diff options
Diffstat (limited to 'core/src/fxcodec/lbmp/fx_bmp.cpp')
| -rw-r--r-- | core/src/fxcodec/lbmp/fx_bmp.cpp | 1950 |
1 files changed, 975 insertions, 975 deletions
diff --git a/core/src/fxcodec/lbmp/fx_bmp.cpp b/core/src/fxcodec/lbmp/fx_bmp.cpp index 00477581a1..388daa434f 100644 --- a/core/src/fxcodec/lbmp/fx_bmp.cpp +++ b/core/src/fxcodec/lbmp/fx_bmp.cpp @@ -1,975 +1,975 @@ -// 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 "fx_bmp.h"
-
-#include <algorithm>
-
-namespace {
-
-const size_t kBmpCoreHeaderSize = 12;
-const size_t kBmpInfoHeaderSize = 40;
-
-} // namespace
-
-FX_DWORD _GetDWord_LSBFirst(uint8_t* p) {
- return p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24);
-}
-FX_WORD _GetWord_LSBFirst(uint8_t* p) {
- return p[0] | (p[1] << 8);
-}
-void _SetDWord_LSBFirst(uint8_t* p, FX_DWORD v) {
- p[0] = (uint8_t)v;
- p[1] = (uint8_t)(v >> 8);
- p[2] = (uint8_t)(v >> 16);
- p[3] = (uint8_t)(v >> 24);
-}
-void _SetWord_LSBFirst(uint8_t* p, FX_WORD v) {
- p[0] = (uint8_t)v;
- p[1] = (uint8_t)(v >> 8);
-}
-void _bmp_error(bmp_decompress_struct_p bmp_ptr, const FX_CHAR* err_msg) {
- if (bmp_ptr != NULL && bmp_ptr->_bmp_error_fn != NULL) {
- bmp_ptr->_bmp_error_fn(bmp_ptr, err_msg);
- }
-}
-bmp_decompress_struct_p _bmp_create_decompress() {
- bmp_decompress_struct_p bmp_ptr = FX_Alloc(bmp_decompress_struct, 1);
- if (bmp_ptr == NULL) {
- return NULL;
- }
- FXSYS_memset(bmp_ptr, 0, sizeof(bmp_decompress_struct));
- bmp_ptr->decode_status = BMP_D_STATUS_HEADER;
- bmp_ptr->bmp_header_ptr = FX_Alloc(BmpFileHeader, 1);
- return bmp_ptr;
-}
-void _bmp_destroy_decompress(bmp_decompress_struct_pp bmp_ptr_ptr) {
- if (bmp_ptr_ptr == NULL || *bmp_ptr_ptr == NULL) {
- return;
- }
- bmp_decompress_struct_p bmp_ptr = *bmp_ptr_ptr;
- *bmp_ptr_ptr = NULL;
- if (bmp_ptr->out_row_buffer != NULL) {
- FX_Free(bmp_ptr->out_row_buffer);
- }
- if (bmp_ptr->pal_ptr != NULL) {
- FX_Free(bmp_ptr->pal_ptr);
- }
- if (bmp_ptr->bmp_header_ptr != NULL) {
- FX_Free(bmp_ptr->bmp_header_ptr);
- }
- FX_Free(bmp_ptr);
-}
-int32_t _bmp_read_header(bmp_decompress_struct_p bmp_ptr) {
- if (bmp_ptr == NULL) {
- return 0;
- }
- FX_DWORD skip_size_org = bmp_ptr->skip_size;
- if (bmp_ptr->decode_status == BMP_D_STATUS_HEADER) {
- ASSERT(sizeof(BmpFileHeader) == 14);
- BmpFileHeader* bmp_header_ptr = NULL;
- if (_bmp_read_data(bmp_ptr, (uint8_t**)&bmp_header_ptr, 14) == NULL) {
- return 2;
- }
- bmp_ptr->bmp_header_ptr->bfType =
- _GetWord_LSBFirst((uint8_t*)&bmp_header_ptr->bfType);
- bmp_ptr->bmp_header_ptr->bfOffBits =
- _GetDWord_LSBFirst((uint8_t*)&bmp_header_ptr->bfOffBits);
- bmp_ptr->data_size = _GetDWord_LSBFirst((uint8_t*)&bmp_header_ptr->bfSize);
- if (bmp_ptr->bmp_header_ptr->bfType != BMP_SIGNATURE) {
- _bmp_error(bmp_ptr, "Not A Bmp Image");
- return 0;
- }
- if (bmp_ptr->avail_in < sizeof(FX_DWORD)) {
- bmp_ptr->skip_size = skip_size_org;
- return 2;
- }
- bmp_ptr->img_ifh_size =
- _GetDWord_LSBFirst(bmp_ptr->next_in + bmp_ptr->skip_size);
- bmp_ptr->pal_type = 0;
- static_assert(sizeof(BmpCoreHeader) == kBmpCoreHeaderSize,
- "BmpCoreHeader has wrong size");
- static_assert(sizeof(BmpInfoHeader) == kBmpInfoHeaderSize,
- "BmpInfoHeader has wrong size");
- switch (bmp_ptr->img_ifh_size) {
- case kBmpCoreHeaderSize: {
- bmp_ptr->pal_type = 1;
- BmpCoreHeaderPtr bmp_core_header_ptr = NULL;
- if (_bmp_read_data(bmp_ptr, (uint8_t**)&bmp_core_header_ptr,
- bmp_ptr->img_ifh_size) == NULL) {
- bmp_ptr->skip_size = skip_size_org;
- return 2;
- }
- bmp_ptr->width = (FX_DWORD)_GetWord_LSBFirst(
- (uint8_t*)&bmp_core_header_ptr->bcWidth);
- bmp_ptr->height = (FX_DWORD)_GetWord_LSBFirst(
- (uint8_t*)&bmp_core_header_ptr->bcHeight);
- bmp_ptr->bitCounts =
- _GetWord_LSBFirst((uint8_t*)&bmp_core_header_ptr->bcBitCount);
- bmp_ptr->compress_flag = BMP_RGB;
- bmp_ptr->imgTB_flag = FALSE;
- } break;
- case kBmpInfoHeaderSize: {
- BmpInfoHeaderPtr bmp_info_header_ptr = NULL;
- if (_bmp_read_data(bmp_ptr, (uint8_t**)&bmp_info_header_ptr,
- bmp_ptr->img_ifh_size) == NULL) {
- bmp_ptr->skip_size = skip_size_org;
- return 2;
- }
- bmp_ptr->width =
- _GetDWord_LSBFirst((uint8_t*)&bmp_info_header_ptr->biWidth);
- bmp_ptr->height =
- _GetDWord_LSBFirst((uint8_t*)&bmp_info_header_ptr->biHeight);
- bmp_ptr->bitCounts =
- _GetWord_LSBFirst((uint8_t*)&bmp_info_header_ptr->biBitCount);
- bmp_ptr->compress_flag =
- _GetDWord_LSBFirst((uint8_t*)&bmp_info_header_ptr->biCompression);
- bmp_ptr->color_used =
- _GetDWord_LSBFirst((uint8_t*)&bmp_info_header_ptr->biClrUsed);
- bmp_ptr->dpi_x = (int32_t)_GetDWord_LSBFirst(
- (uint8_t*)&bmp_info_header_ptr->biXPelsPerMeter);
- bmp_ptr->dpi_y = (int32_t)_GetDWord_LSBFirst(
- (uint8_t*)&bmp_info_header_ptr->biYPelsPerMeter);
- if (bmp_ptr->height < 0) {
- bmp_ptr->height = -bmp_ptr->height;
- bmp_ptr->imgTB_flag = TRUE;
- }
- } break;
- default: {
- if (bmp_ptr->img_ifh_size >
- std::min(kBmpInfoHeaderSize, sizeof(BmpInfoHeader))) {
- BmpInfoHeaderPtr bmp_info_header_ptr = NULL;
- if (_bmp_read_data(bmp_ptr, (uint8_t**)&bmp_info_header_ptr,
- bmp_ptr->img_ifh_size) == NULL) {
- bmp_ptr->skip_size = skip_size_org;
- return 2;
- }
- FX_WORD biPlanes;
- bmp_ptr->width =
- _GetDWord_LSBFirst((uint8_t*)&bmp_info_header_ptr->biWidth);
- bmp_ptr->height =
- _GetDWord_LSBFirst((uint8_t*)&bmp_info_header_ptr->biHeight);
- bmp_ptr->bitCounts =
- _GetWord_LSBFirst((uint8_t*)&bmp_info_header_ptr->biBitCount);
- bmp_ptr->compress_flag =
- _GetDWord_LSBFirst((uint8_t*)&bmp_info_header_ptr->biCompression);
- bmp_ptr->color_used =
- _GetDWord_LSBFirst((uint8_t*)&bmp_info_header_ptr->biClrUsed);
- biPlanes =
- _GetWord_LSBFirst((uint8_t*)&bmp_info_header_ptr->biPlanes);
- bmp_ptr->dpi_x = _GetDWord_LSBFirst(
- (uint8_t*)&bmp_info_header_ptr->biXPelsPerMeter);
- bmp_ptr->dpi_y = _GetDWord_LSBFirst(
- (uint8_t*)&bmp_info_header_ptr->biYPelsPerMeter);
- if (bmp_ptr->height < 0) {
- bmp_ptr->height = -bmp_ptr->height;
- bmp_ptr->imgTB_flag = TRUE;
- }
- if (bmp_ptr->compress_flag == BMP_RGB && biPlanes == 1 &&
- bmp_ptr->color_used == 0) {
- break;
- }
- }
- _bmp_error(bmp_ptr, "Unsupported Bmp File");
- return 0;
- }
- }
- ASSERT(bmp_ptr->width > 0);
- ASSERT(bmp_ptr->compress_flag <= BMP_BITFIELDS);
- switch (bmp_ptr->bitCounts) {
- case 1:
- case 4:
- case 8:
- case 16:
- case 24: {
- if (bmp_ptr->color_used > ((FX_DWORD)1) << bmp_ptr->bitCounts) {
- _bmp_error(bmp_ptr, "The Bmp File Is Corrupt");
- return 0;
- }
- }
- case 32: {
- if (bmp_ptr->width <= 0 || bmp_ptr->compress_flag > BMP_BITFIELDS) {
- _bmp_error(bmp_ptr, "The Bmp File Is Corrupt");
- return 0;
- }
- } break;
- default:
- _bmp_error(bmp_ptr, "The Bmp File Is Corrupt");
- return 0;
- }
- bmp_ptr->src_row_bytes = BMP_WIDTHBYTES(bmp_ptr->width, bmp_ptr->bitCounts);
- switch (bmp_ptr->bitCounts) {
- case 1:
- case 4:
- case 8:
- bmp_ptr->out_row_bytes = BMP_WIDTHBYTES(bmp_ptr->width, 8);
- bmp_ptr->components = 1;
- break;
- case 16:
- case 24:
- bmp_ptr->out_row_bytes = BMP_WIDTHBYTES(bmp_ptr->width, 24);
- bmp_ptr->components = 3;
- break;
- case 32:
- bmp_ptr->out_row_bytes = bmp_ptr->src_row_bytes;
- bmp_ptr->components = 4;
- break;
- }
- if (bmp_ptr->out_row_buffer != NULL) {
- FX_Free(bmp_ptr->out_row_buffer);
- bmp_ptr->out_row_buffer = NULL;
- }
- bmp_ptr->out_row_buffer = FX_Alloc(uint8_t, bmp_ptr->out_row_bytes);
- BMP_PTR_NOT_NULL(bmp_ptr->out_row_buffer, bmp_ptr);
- FXSYS_memset(bmp_ptr->out_row_buffer, 0, bmp_ptr->out_row_bytes);
- _bmp_save_decoding_status(bmp_ptr, BMP_D_STATUS_PAL);
- }
- if (bmp_ptr->decode_status == BMP_D_STATUS_PAL) {
- skip_size_org = bmp_ptr->skip_size;
-#ifdef BMP_SUPPORT_BITFIELD
- if (bmp_ptr->compress_flag == BMP_BITFIELDS) {
- if (bmp_ptr->bitCounts != 16 && bmp_ptr->bitCounts != 32) {
- _bmp_error(bmp_ptr, "The Bmp File Is Corrupt");
- return 0;
- }
- FX_DWORD* mask;
- if (_bmp_read_data(bmp_ptr, (uint8_t**)&mask, 3 * sizeof(FX_DWORD)) ==
- NULL) {
- bmp_ptr->skip_size = skip_size_org;
- return 2;
- }
- bmp_ptr->mask_red = _GetDWord_LSBFirst((uint8_t*)&mask[0]);
- bmp_ptr->mask_green = _GetDWord_LSBFirst((uint8_t*)&mask[1]);
- bmp_ptr->mask_blue = _GetDWord_LSBFirst((uint8_t*)&mask[2]);
- if (bmp_ptr->mask_red & bmp_ptr->mask_green ||
- bmp_ptr->mask_red & bmp_ptr->mask_blue ||
- bmp_ptr->mask_green & bmp_ptr->mask_blue) {
- _bmp_error(bmp_ptr, "The Bitfield Bmp File Is Corrupt");
- return 0;
- }
- if (bmp_ptr->bmp_header_ptr->bfOffBits < 26 + bmp_ptr->img_ifh_size) {
- bmp_ptr->bmp_header_ptr->bfOffBits = 26 + bmp_ptr->img_ifh_size;
- }
- _bmp_save_decoding_status(bmp_ptr, BMP_D_STATUS_DATA_PRE);
- return 1;
- } else if (bmp_ptr->bitCounts == 16) {
- bmp_ptr->mask_red = 0x7C00;
- bmp_ptr->mask_green = 0x03E0;
- bmp_ptr->mask_blue = 0x001F;
- }
-#else
- if (bmp_ptr->compress_flag == BMP_BITFIELDS || bmp_ptr->bitCounts == 16) {
- _bmp_error(bmp_ptr, "Unsupported Bitfield Bmp File");
- return 0;
- }
-#endif
- bmp_ptr->pal_num = 0;
- if (bmp_ptr->bitCounts < 16) {
- bmp_ptr->pal_num = 1 << bmp_ptr->bitCounts;
- if (bmp_ptr->color_used != 0) {
- bmp_ptr->pal_num = bmp_ptr->color_used;
- }
- uint8_t* src_pal_ptr = NULL;
- FX_DWORD src_pal_size = bmp_ptr->pal_num * (bmp_ptr->pal_type ? 3 : 4);
- if (_bmp_read_data(bmp_ptr, (uint8_t**)&src_pal_ptr, src_pal_size) ==
- NULL) {
- bmp_ptr->skip_size = skip_size_org;
- return 2;
- }
- if (bmp_ptr->pal_ptr != NULL) {
- FX_Free(bmp_ptr->pal_ptr);
- bmp_ptr->pal_ptr = NULL;
- }
- bmp_ptr->pal_ptr = FX_Alloc(FX_DWORD, bmp_ptr->pal_num);
- BMP_PTR_NOT_NULL(bmp_ptr->pal_ptr, bmp_ptr);
- int32_t src_pal_index = 0;
- if (bmp_ptr->pal_type == BMP_PAL_OLD) {
- while (src_pal_index < bmp_ptr->pal_num) {
- bmp_ptr->pal_ptr[src_pal_index++] = BMP_PAL_ENCODE(
- 0x00, src_pal_ptr[2], src_pal_ptr[1], src_pal_ptr[0]);
- src_pal_ptr += 3;
- }
- } else {
- while (src_pal_index < bmp_ptr->pal_num) {
- bmp_ptr->pal_ptr[src_pal_index++] = BMP_PAL_ENCODE(
- src_pal_ptr[3], src_pal_ptr[2], src_pal_ptr[1], src_pal_ptr[0]);
- src_pal_ptr += 4;
- }
- }
- }
- if (bmp_ptr->bmp_header_ptr->bfOffBits <
- 14 + bmp_ptr->img_ifh_size +
- bmp_ptr->pal_num * (bmp_ptr->pal_type ? 3 : 4)) {
- bmp_ptr->bmp_header_ptr->bfOffBits =
- 14 + bmp_ptr->img_ifh_size +
- bmp_ptr->pal_num * (bmp_ptr->pal_type ? 3 : 4);
- }
- _bmp_save_decoding_status(bmp_ptr, BMP_D_STATUS_DATA_PRE);
- }
- return 1;
-}
-int32_t _bmp_decode_image(bmp_decompress_struct_p bmp_ptr) {
- if (bmp_ptr->decode_status == BMP_D_STATUS_DATA_PRE) {
- bmp_ptr->avail_in = 0;
- if (!bmp_ptr->_bmp_get_data_position_fn(
- bmp_ptr, bmp_ptr->bmp_header_ptr->bfOffBits)) {
- bmp_ptr->decode_status = BMP_D_STATUS_TAIL;
- _bmp_error(bmp_ptr, "The Bmp File Is Corrupt, Unexpected Stream Offset");
- return 0;
- }
- bmp_ptr->row_num = 0;
- _bmp_save_decoding_status(bmp_ptr, BMP_D_STATUS_DATA);
- }
- if (bmp_ptr->decode_status == BMP_D_STATUS_DATA) {
- switch (bmp_ptr->compress_flag) {
- case BMP_RGB:
- case BMP_BITFIELDS:
- return _bmp_decode_rgb(bmp_ptr);
- case BMP_RLE8:
- return _bmp_decode_rle8(bmp_ptr);
- case BMP_RLE4:
- return _bmp_decode_rle4(bmp_ptr);
- }
- }
- _bmp_error(bmp_ptr, "Any Uncontrol Error");
- return 0;
-}
-int32_t _bmp_decode_rgb(bmp_decompress_struct_p bmp_ptr) {
- uint8_t* row_buf = bmp_ptr->out_row_buffer;
- uint8_t* des_buf = NULL;
- while (bmp_ptr->row_num < bmp_ptr->height) {
- if (_bmp_read_data(bmp_ptr, &des_buf, bmp_ptr->src_row_bytes) == NULL) {
- return 2;
- }
- _bmp_save_decoding_status(bmp_ptr, BMP_D_STATUS_DATA);
- switch (bmp_ptr->bitCounts) {
- case 1: {
- for (int32_t col = 0; col < bmp_ptr->width; col++) {
- *row_buf++ = des_buf[col >> 3] & (0x80 >> (col % 8)) ? 0x01 : 0x00;
- }
- } break;
- case 4: {
- for (int32_t col = 0; col < bmp_ptr->width; col++) {
- *row_buf++ = (col & 0x01) ? (des_buf[col >> 1] & 0x0F)
- : ((des_buf[col >> 1] & 0xF0) >> 4);
- }
- } break;
-#ifdef BMP_SUPPORT_BITFIELD
- case 16: {
- FX_WORD* buf = (FX_WORD*)des_buf;
- uint8_t blue_bits = 0;
- uint8_t green_bits = 0;
- uint8_t red_bits = 0;
- for (int32_t i = 0; i < 16; i++) {
- if ((bmp_ptr->mask_blue >> i) & 0x01) {
- blue_bits++;
- }
- if ((bmp_ptr->mask_green >> i) & 0x01) {
- green_bits++;
- }
- if ((bmp_ptr->mask_red >> i) & 0x01) {
- red_bits++;
- }
- }
- green_bits += blue_bits;
- red_bits += green_bits;
- blue_bits = 8 - blue_bits;
- green_bits -= 8;
- red_bits -= 8;
- for (int32_t col = 0; col < bmp_ptr->width; col++) {
- *buf = _GetWord_LSBFirst((uint8_t*)buf);
- *row_buf++ = (uint8_t)((*buf & bmp_ptr->mask_blue) << blue_bits);
- *row_buf++ = (uint8_t)((*buf & bmp_ptr->mask_green) >> green_bits);
- *row_buf++ = (uint8_t)((*buf++ & bmp_ptr->mask_red) >> red_bits);
- }
- } break;
-#endif
- case 8:
- case 24:
- case 32:
- FXSYS_memcpy(bmp_ptr->out_row_buffer, des_buf, bmp_ptr->src_row_bytes);
- break;
- }
- row_buf = bmp_ptr->out_row_buffer;
- bmp_ptr->_bmp_get_row_fn(bmp_ptr,
- bmp_ptr->imgTB_flag
- ? bmp_ptr->row_num++
- : (bmp_ptr->height - 1 - bmp_ptr->row_num++),
- bmp_ptr->out_row_buffer);
- }
- _bmp_save_decoding_status(bmp_ptr, BMP_D_STATUS_TAIL);
- return 1;
-}
-int32_t _bmp_decode_rle8(bmp_decompress_struct_p bmp_ptr) {
- uint8_t* first_byte_ptr = NULL;
- uint8_t* second_byte_ptr = NULL;
- bmp_ptr->col_num = 0;
- while (TRUE) {
- FX_DWORD skip_size_org = bmp_ptr->skip_size;
- if (_bmp_read_data(bmp_ptr, &first_byte_ptr, 1) == NULL) {
- return 2;
- }
- switch (*first_byte_ptr) {
- case RLE_MARKER: {
- if (_bmp_read_data(bmp_ptr, &first_byte_ptr, 1) == NULL) {
- bmp_ptr->skip_size = skip_size_org;
- return 2;
- }
- switch (*first_byte_ptr) {
- case RLE_EOL: {
- if (bmp_ptr->row_num >= bmp_ptr->height) {
- _bmp_save_decoding_status(bmp_ptr, BMP_D_STATUS_TAIL);
- _bmp_error(bmp_ptr, "The Bmp File Is Corrupt");
- return 0;
- }
- bmp_ptr->_bmp_get_row_fn(
- bmp_ptr, bmp_ptr->imgTB_flag
- ? bmp_ptr->row_num++
- : (bmp_ptr->height - 1 - bmp_ptr->row_num++),
- bmp_ptr->out_row_buffer);
- bmp_ptr->col_num = 0;
- FXSYS_memset(bmp_ptr->out_row_buffer, 0, bmp_ptr->out_row_bytes);
- _bmp_save_decoding_status(bmp_ptr, BMP_D_STATUS_DATA);
- continue;
- }
- case RLE_EOI: {
- if (bmp_ptr->row_num < bmp_ptr->height) {
- bmp_ptr->_bmp_get_row_fn(
- bmp_ptr, bmp_ptr->imgTB_flag
- ? bmp_ptr->row_num++
- : (bmp_ptr->height - 1 - bmp_ptr->row_num++),
- bmp_ptr->out_row_buffer);
- }
- _bmp_save_decoding_status(bmp_ptr, BMP_D_STATUS_TAIL);
- return 1;
- }
- case RLE_DELTA: {
- uint8_t* delta_ptr;
- if (_bmp_read_data(bmp_ptr, &delta_ptr, 2) == NULL) {
- bmp_ptr->skip_size = skip_size_org;
- return 2;
- }
- bmp_ptr->col_num += (int32_t)delta_ptr[0];
- int32_t bmp_row_num_next = bmp_ptr->row_num + (int32_t)delta_ptr[1];
- if (bmp_ptr->col_num >= bmp_ptr->out_row_bytes ||
- bmp_row_num_next >= bmp_ptr->height) {
- _bmp_error(bmp_ptr, "The Bmp File Is Corrupt Or Not Supported");
- return 0;
- }
- while (bmp_ptr->row_num < bmp_row_num_next) {
- FXSYS_memset(bmp_ptr->out_row_buffer, 0, bmp_ptr->out_row_bytes);
- bmp_ptr->_bmp_get_row_fn(
- bmp_ptr, bmp_ptr->imgTB_flag
- ? bmp_ptr->row_num++
- : (bmp_ptr->height - 1 - bmp_ptr->row_num++),
- bmp_ptr->out_row_buffer);
- }
- } break;
- default: {
- if ((int32_t)(*first_byte_ptr) >
- bmp_ptr->src_row_bytes - bmp_ptr->col_num) {
- _bmp_error(bmp_ptr, "The Bmp File Is Corrupt");
- return 0;
- }
- if (_bmp_read_data(bmp_ptr, &second_byte_ptr,
- *first_byte_ptr & 1 ? *first_byte_ptr + 1
- : *first_byte_ptr) == NULL) {
- bmp_ptr->skip_size = skip_size_org;
- return 2;
- }
- FXSYS_memcpy(bmp_ptr->out_row_buffer + bmp_ptr->col_num,
- second_byte_ptr, *first_byte_ptr);
- bmp_ptr->col_num += (int32_t)(*first_byte_ptr);
- }
- }
- } break;
- default: {
- if (_bmp_read_data(bmp_ptr, &second_byte_ptr, 1) == NULL) {
- bmp_ptr->skip_size = skip_size_org;
- return 2;
- }
- if ((int32_t)(*first_byte_ptr) >
- bmp_ptr->src_row_bytes - bmp_ptr->col_num) {
- _bmp_error(bmp_ptr, "The Bmp File Is Corrupt");
- return 0;
- }
- FXSYS_memset(bmp_ptr->out_row_buffer + bmp_ptr->col_num,
- *second_byte_ptr, *first_byte_ptr);
- bmp_ptr->col_num += (int32_t)(*first_byte_ptr);
- }
- }
- }
- _bmp_error(bmp_ptr, "Any Uncontrol Error");
- return 0;
-}
-int32_t _bmp_decode_rle4(bmp_decompress_struct_p bmp_ptr) {
- uint8_t* first_byte_ptr = NULL;
- uint8_t* second_byte_ptr = NULL;
- bmp_ptr->col_num = 0;
- while (TRUE) {
- FX_DWORD skip_size_org = bmp_ptr->skip_size;
- if (_bmp_read_data(bmp_ptr, &first_byte_ptr, 1) == NULL) {
- return 2;
- }
- switch (*first_byte_ptr) {
- case RLE_MARKER: {
- if (_bmp_read_data(bmp_ptr, &first_byte_ptr, 1) == NULL) {
- bmp_ptr->skip_size = skip_size_org;
- return 2;
- }
- switch (*first_byte_ptr) {
- case RLE_EOL: {
- if (bmp_ptr->row_num >= bmp_ptr->height) {
- _bmp_save_decoding_status(bmp_ptr, BMP_D_STATUS_TAIL);
- _bmp_error(bmp_ptr, "The Bmp File Is Corrupt");
- return 0;
- }
- bmp_ptr->_bmp_get_row_fn(
- bmp_ptr, bmp_ptr->imgTB_flag
- ? bmp_ptr->row_num++
- : (bmp_ptr->height - 1 - bmp_ptr->row_num++),
- bmp_ptr->out_row_buffer);
- bmp_ptr->col_num = 0;
- FXSYS_memset(bmp_ptr->out_row_buffer, 0, bmp_ptr->out_row_bytes);
- _bmp_save_decoding_status(bmp_ptr, BMP_D_STATUS_DATA);
- continue;
- }
- case RLE_EOI: {
- if (bmp_ptr->row_num < bmp_ptr->height) {
- bmp_ptr->_bmp_get_row_fn(
- bmp_ptr, bmp_ptr->imgTB_flag
- ? bmp_ptr->row_num++
- : (bmp_ptr->height - 1 - bmp_ptr->row_num++),
- bmp_ptr->out_row_buffer);
- }
- _bmp_save_decoding_status(bmp_ptr, BMP_D_STATUS_TAIL);
- return 1;
- }
- case RLE_DELTA: {
- uint8_t* delta_ptr;
- if (_bmp_read_data(bmp_ptr, &delta_ptr, 2) == NULL) {
- bmp_ptr->skip_size = skip_size_org;
- return 2;
- }
- bmp_ptr->col_num += (int32_t)delta_ptr[0];
- int32_t bmp_row_num_next = bmp_ptr->row_num + (int32_t)delta_ptr[1];
- if (bmp_ptr->col_num >= bmp_ptr->out_row_bytes ||
- bmp_row_num_next >= bmp_ptr->height) {
- _bmp_error(bmp_ptr, "The Bmp File Is Corrupt Or Not Supported");
- return 0;
- }
- while (bmp_ptr->row_num < bmp_row_num_next) {
- FXSYS_memset(bmp_ptr->out_row_buffer, 0, bmp_ptr->out_row_bytes);
- bmp_ptr->_bmp_get_row_fn(
- bmp_ptr, bmp_ptr->imgTB_flag
- ? bmp_ptr->row_num++
- : (bmp_ptr->height - 1 - bmp_ptr->row_num++),
- bmp_ptr->out_row_buffer);
- }
- } break;
- default: {
- uint8_t size = (uint8_t)(((FX_WORD)(*first_byte_ptr) + 1) >> 1);
- if ((int32_t)*first_byte_ptr >=
- bmp_ptr->out_row_bytes - bmp_ptr->col_num) {
- if (size + (bmp_ptr->col_num >> 1) > bmp_ptr->src_row_bytes) {
- _bmp_error(bmp_ptr, "The Bmp File Is Corrupt");
- return 0;
- }
- *first_byte_ptr = bmp_ptr->out_row_bytes - bmp_ptr->col_num - 1;
- }
- if (_bmp_read_data(bmp_ptr, &second_byte_ptr,
- size & 1 ? size + 1 : size) == NULL) {
- bmp_ptr->skip_size = skip_size_org;
- return 2;
- }
- for (uint8_t i = 0; i < *first_byte_ptr; i++) {
- if (i & 0x01) {
- *(bmp_ptr->out_row_buffer + bmp_ptr->col_num++) =
- (*second_byte_ptr++ & 0x0F);
- } else {
- *(bmp_ptr->out_row_buffer + bmp_ptr->col_num++) =
- ((*second_byte_ptr & 0xF0) >> 4);
- }
- }
- }
- }
- } break;
- default: {
- if (_bmp_read_data(bmp_ptr, &second_byte_ptr, 1) == NULL) {
- bmp_ptr->skip_size = skip_size_org;
- return 2;
- }
- if ((int32_t)*first_byte_ptr >
- bmp_ptr->out_row_bytes - bmp_ptr->col_num) {
- uint8_t size = (uint8_t)(((FX_WORD)(*first_byte_ptr) + 1) >> 1);
- if (size + (bmp_ptr->col_num >> 1) > bmp_ptr->src_row_bytes) {
- _bmp_error(bmp_ptr, "The Bmp File Is Corrupt");
- return 0;
- }
- *first_byte_ptr = bmp_ptr->out_row_bytes - bmp_ptr->col_num - 1;
- }
- for (uint8_t i = 0; i < *first_byte_ptr; i++) {
- if (i & 0x01) {
- *(bmp_ptr->out_row_buffer + bmp_ptr->col_num++) =
- (*second_byte_ptr & 0x0F);
- } else {
- *(bmp_ptr->out_row_buffer + bmp_ptr->col_num++) =
- ((*second_byte_ptr & 0xF0) >> 4);
- }
- }
- }
- }
- }
- _bmp_error(bmp_ptr, "Any Uncontrol Error");
- return 0;
-}
-uint8_t* _bmp_read_data(bmp_decompress_struct_p bmp_ptr,
- uint8_t** des_buf_pp,
- FX_DWORD data_size) {
- if (bmp_ptr == NULL || bmp_ptr->avail_in < bmp_ptr->skip_size + data_size) {
- return NULL;
- }
- *des_buf_pp = bmp_ptr->next_in + bmp_ptr->skip_size;
- bmp_ptr->skip_size += data_size;
- return *des_buf_pp;
-}
-void _bmp_save_decoding_status(bmp_decompress_struct_p bmp_ptr,
- int32_t status) {
- bmp_ptr->decode_status = status;
- bmp_ptr->next_in += bmp_ptr->skip_size;
- bmp_ptr->avail_in -= bmp_ptr->skip_size;
- bmp_ptr->skip_size = 0;
-}
-void _bmp_input_buffer(bmp_decompress_struct_p bmp_ptr,
- uint8_t* src_buf,
- FX_DWORD src_size) {
- bmp_ptr->next_in = src_buf;
- bmp_ptr->avail_in = src_size;
- bmp_ptr->skip_size = 0;
-}
-FX_DWORD _bmp_get_avail_input(bmp_decompress_struct_p bmp_ptr,
- uint8_t** avial_buf_ptr) {
- if (avial_buf_ptr != NULL) {
- *avial_buf_ptr = NULL;
- if (bmp_ptr->avail_in > 0) {
- *avial_buf_ptr = bmp_ptr->next_in;
- }
- }
- return bmp_ptr->avail_in;
-}
-bmp_compress_struct_p _bmp_create_compress() {
- bmp_compress_struct_p bmp_ptr;
- bmp_ptr = FX_Alloc(bmp_compress_struct, 1);
- if (bmp_ptr) {
- FXSYS_memset(bmp_ptr, 0, sizeof(bmp_compress_struct));
- }
- return bmp_ptr;
-}
-void _bmp_destroy_compress(bmp_compress_struct_p bmp_ptr) {
- if (bmp_ptr) {
- if (bmp_ptr->src_free && bmp_ptr->src_buf) {
- FX_Free(bmp_ptr->src_buf);
- }
- FX_Free(bmp_ptr);
- }
-}
-static void WriteFileHeader(BmpFileHeaderPtr head_ptr, uint8_t* dst_buf) {
- FX_DWORD offset;
- offset = 0;
- _SetWord_LSBFirst(&dst_buf[offset], head_ptr->bfType);
- offset += 2;
- _SetDWord_LSBFirst(&dst_buf[offset], head_ptr->bfSize);
- offset += 4;
- _SetWord_LSBFirst(&dst_buf[offset], head_ptr->bfReserved1);
- offset += 2;
- _SetWord_LSBFirst(&dst_buf[offset], head_ptr->bfReserved2);
- offset += 2;
- _SetDWord_LSBFirst(&dst_buf[offset], head_ptr->bfOffBits);
- offset += 4;
-}
-static void WriteInfoHeader(BmpInfoHeaderPtr info_head_ptr, uint8_t* dst_buf) {
- FX_DWORD offset;
- offset = sizeof(BmpFileHeader);
- _SetDWord_LSBFirst(&dst_buf[offset], info_head_ptr->biSize);
- offset += 4;
- _SetDWord_LSBFirst(&dst_buf[offset], (FX_DWORD)info_head_ptr->biWidth);
- offset += 4;
- _SetDWord_LSBFirst(&dst_buf[offset], (FX_DWORD)info_head_ptr->biHeight);
- offset += 4;
- _SetWord_LSBFirst(&dst_buf[offset], info_head_ptr->biPlanes);
- offset += 2;
- _SetWord_LSBFirst(&dst_buf[offset], info_head_ptr->biBitCount);
- offset += 2;
- _SetDWord_LSBFirst(&dst_buf[offset], info_head_ptr->biCompression);
- offset += 4;
- _SetDWord_LSBFirst(&dst_buf[offset], info_head_ptr->biSizeImage);
- offset += 4;
- _SetDWord_LSBFirst(&dst_buf[offset],
- (FX_DWORD)info_head_ptr->biXPelsPerMeter);
- offset += 4;
- _SetDWord_LSBFirst(&dst_buf[offset],
- (FX_DWORD)info_head_ptr->biYPelsPerMeter);
- offset += 4;
- _SetDWord_LSBFirst(&dst_buf[offset], info_head_ptr->biClrUsed);
- offset += 4;
- _SetDWord_LSBFirst(&dst_buf[offset], info_head_ptr->biClrImportant);
- offset += 4;
-}
-#ifdef BMP_SUPPORT_BITFIELD
-static void _bmp_encode_bitfields(bmp_compress_struct_p bmp_ptr,
- uint8_t*& dst_buf,
- FX_DWORD& dst_size) {
- if (bmp_ptr->info_header.biBitCount != 16 &&
- bmp_ptr->info_header.biBitCount != 32) {
- return;
- }
- FX_DWORD size, dst_pos, i;
- size = bmp_ptr->src_pitch * bmp_ptr->src_row *
- bmp_ptr->info_header.biBitCount / 16;
- dst_pos = bmp_ptr->file_header.bfOffBits;
- dst_size += size;
- dst_buf = FX_Realloc(uint8_t, dst_buf, dst_size);
- if (dst_buf == NULL) {
- return;
- }
- FXSYS_memset(&dst_buf[dst_pos], 0, size);
- FX_DWORD mask_red;
- FX_DWORD mask_green;
- FX_DWORD mask_blue;
- mask_red = 0x7C00;
- mask_green = 0x03E0;
- mask_blue = 0x001F;
- if (bmp_ptr->info_header.biCompression == BMP_BITFIELDS) {
- if (bmp_ptr->bit_type == BMP_BIT_565) {
- mask_red = 0xF800;
- mask_green = 0x07E0;
- mask_blue = 0x001F;
- }
- if (bmp_ptr->info_header.biBitCount == 32) {
- mask_red = 0xFF0000;
- mask_green = 0x00FF00;
- mask_blue = 0x0000FF;
- }
- _SetDWord_LSBFirst(&dst_buf[dst_pos], mask_red);
- dst_pos += 4;
- _SetDWord_LSBFirst(&dst_buf[dst_pos], mask_green);
- dst_pos += 4;
- _SetDWord_LSBFirst(&dst_buf[dst_pos], mask_blue);
- dst_pos += 4;
- bmp_ptr->file_header.bfOffBits = dst_pos;
- }
- uint8_t blue_bits = 0;
- uint8_t green_bits = 0;
- uint8_t red_bits = 0;
- for (i = 0; i < bmp_ptr->info_header.biBitCount; i++) {
- if ((mask_blue >> i) & 0x01) {
- blue_bits++;
- }
- if ((mask_green >> i) & 0x01) {
- green_bits++;
- }
- if ((mask_red >> i) & 0x01) {
- red_bits++;
- }
- }
- green_bits += blue_bits;
- red_bits += green_bits;
- blue_bits = 8 - blue_bits;
- green_bits -= 8;
- red_bits -= 8;
- i = 0;
- for (int32_t row_num = bmp_ptr->src_row - 1; row_num > -1; row_num--, i = 0) {
- while (i < bmp_ptr->src_width * bmp_ptr->src_bpp / 8) {
- uint8_t b = bmp_ptr->src_buf[row_num * bmp_ptr->src_pitch + i++];
- uint8_t g = bmp_ptr->src_buf[row_num * bmp_ptr->src_pitch + i++];
- uint8_t r = bmp_ptr->src_buf[row_num * bmp_ptr->src_pitch + i++];
- if (bmp_ptr->src_bpp == 32) {
- i++;
- }
- FX_DWORD pix_val = 0;
- pix_val |= (b >> blue_bits) & mask_blue;
- pix_val |= (g << green_bits) & mask_green;
- pix_val |= (r << red_bits) & mask_red;
- if (bmp_ptr->info_header.biBitCount == 16) {
- _SetWord_LSBFirst(&dst_buf[dst_pos], (FX_WORD)pix_val);
- dst_pos += 2;
- } else {
- _SetDWord_LSBFirst(&dst_buf[dst_pos], pix_val);
- dst_pos += 4;
- }
- }
- }
- dst_size = dst_pos;
-}
-#endif
-static void _bmp_encode_rgb(bmp_compress_struct_p bmp_ptr,
- uint8_t*& dst_buf,
- FX_DWORD& dst_size) {
- if (bmp_ptr->info_header.biBitCount == 16) {
-#ifdef BMP_SUPPORT_BITFIELD
- _bmp_encode_bitfields(bmp_ptr, dst_buf, dst_size);
-#endif
- return;
- }
- FX_DWORD size, dst_pos;
- FX_DWORD dst_pitch =
- (bmp_ptr->src_width * bmp_ptr->info_header.biBitCount + 31) / 32 * 4;
- size = dst_pitch * bmp_ptr->src_row;
- dst_pos = bmp_ptr->file_header.bfOffBits;
- dst_size += size;
- dst_buf = FX_Realloc(uint8_t, dst_buf, dst_size);
- if (dst_buf == NULL) {
- return;
- }
- FXSYS_memset(&dst_buf[dst_pos], 0, size);
- for (int32_t row_num = bmp_ptr->src_row - 1; row_num > -1; row_num--) {
- FXSYS_memcpy(&dst_buf[dst_pos],
- &bmp_ptr->src_buf[row_num * bmp_ptr->src_pitch],
- bmp_ptr->src_pitch);
- dst_pos += dst_pitch;
- }
- dst_size = dst_pos;
-}
-static uint8_t _bmp_rle8_search(const uint8_t* buf, int32_t len) {
- uint8_t num;
- num = 1;
- while (num < len) {
- if (buf[num - 1] != buf[num] || num == 0xFF) {
- break;
- }
- num++;
- }
- return num;
-}
-static void _bmp_encode_rle8(bmp_compress_struct_p bmp_ptr,
- uint8_t*& dst_buf,
- FX_DWORD& dst_size) {
- FX_DWORD size, dst_pos, index;
- uint8_t rle[2] = {0};
- size = bmp_ptr->src_pitch * bmp_ptr->src_row * 2;
- dst_pos = bmp_ptr->file_header.bfOffBits;
- dst_size += size;
- dst_buf = FX_Realloc(uint8_t, dst_buf, dst_size);
- if (dst_buf == NULL) {
- return;
- }
- FXSYS_memset(&dst_buf[dst_pos], 0, size);
- for (int32_t row_num = bmp_ptr->src_row - 1, i = 0; row_num > -1;) {
- index = row_num * bmp_ptr->src_pitch;
- rle[0] = _bmp_rle8_search(&bmp_ptr->src_buf[index + i], size - index - i);
- rle[1] = bmp_ptr->src_buf[index + i];
- if (i + rle[0] >= (int32_t)bmp_ptr->src_pitch) {
- rle[0] = uint8_t(bmp_ptr->src_pitch - i);
- if (rle[0]) {
- dst_buf[dst_pos++] = rle[0];
- dst_buf[dst_pos++] = rle[1];
- }
- dst_buf[dst_pos++] = RLE_MARKER;
- dst_buf[dst_pos++] = RLE_EOL;
- i = 0;
- row_num--;
- } else {
- i += rle[0];
- dst_buf[dst_pos++] = rle[0];
- dst_buf[dst_pos++] = rle[1];
- }
- }
- dst_buf[dst_pos++] = RLE_MARKER;
- dst_buf[dst_pos++] = RLE_EOI;
- dst_size = dst_pos;
-}
-static uint8_t _bmp_rle4_search(const uint8_t* buf, int32_t len) {
- uint8_t num;
- num = 2;
- while (num < len) {
- if (buf[num - 2] != buf[num] || num == 0xFF) {
- break;
- }
- num++;
- }
- return num;
-}
-static void _bmp_encode_rle4(bmp_compress_struct_p bmp_ptr,
- uint8_t*& dst_buf,
- FX_DWORD& dst_size) {
- FX_DWORD size, dst_pos, index;
- uint8_t rle[2] = {0};
- size = bmp_ptr->src_pitch * bmp_ptr->src_row;
- dst_pos = bmp_ptr->file_header.bfOffBits;
- dst_size += size;
- dst_buf = FX_Realloc(uint8_t, dst_buf, dst_size);
- if (dst_buf == NULL) {
- return;
- }
- FXSYS_memset(&dst_buf[dst_pos], 0, size);
- for (int32_t row_num = bmp_ptr->src_row - 1, i = 0; row_num > -1;
- rle[1] = 0) {
- index = row_num * bmp_ptr->src_pitch;
- rle[0] = _bmp_rle4_search(&bmp_ptr->src_buf[index + i], size - index - i);
- rle[1] |= (bmp_ptr->src_buf[index + i] & 0x0f) << 4;
- rle[1] |= bmp_ptr->src_buf[index + i + 1] & 0x0f;
- if (i + rle[0] >= (int32_t)bmp_ptr->src_pitch) {
- rle[0] = uint8_t(bmp_ptr->src_pitch - i);
- if (rle[0]) {
- dst_buf[dst_pos++] = rle[0];
- dst_buf[dst_pos++] = rle[1];
- }
- dst_buf[dst_pos++] = RLE_MARKER;
- dst_buf[dst_pos++] = RLE_EOL;
- i = 0;
- row_num--;
- } else {
- i += rle[0];
- dst_buf[dst_pos++] = rle[0];
- dst_buf[dst_pos++] = rle[1];
- }
- }
- dst_buf[dst_pos++] = RLE_MARKER;
- dst_buf[dst_pos++] = RLE_EOI;
- dst_size = dst_pos;
-}
-FX_BOOL _bmp_encode_image(bmp_compress_struct_p bmp_ptr,
- uint8_t*& dst_buf,
- FX_DWORD& dst_size) {
- FX_DWORD head_size = sizeof(BmpFileHeader) + sizeof(BmpInfoHeader);
- FX_DWORD pal_size = sizeof(FX_DWORD) * bmp_ptr->pal_num;
- if (bmp_ptr->info_header.biClrUsed > 0 &&
- bmp_ptr->info_header.biClrUsed < bmp_ptr->pal_num) {
- pal_size = sizeof(FX_DWORD) * bmp_ptr->info_header.biClrUsed;
- }
- dst_size = head_size + sizeof(FX_DWORD) * bmp_ptr->pal_num;
- dst_buf = FX_TryAlloc(uint8_t, dst_size);
- if (dst_buf == NULL) {
- return FALSE;
- }
- FXSYS_memset(dst_buf, 0, dst_size);
- bmp_ptr->file_header.bfOffBits = head_size;
- if (bmp_ptr->pal_ptr && pal_size) {
- FXSYS_memcpy(&dst_buf[head_size], bmp_ptr->pal_ptr, pal_size);
- bmp_ptr->file_header.bfOffBits += pal_size;
- }
- WriteInfoHeader(&bmp_ptr->info_header, dst_buf);
- switch (bmp_ptr->info_header.biCompression) {
- case BMP_RGB:
- _bmp_encode_rgb(bmp_ptr, dst_buf, dst_size);
- break;
- case BMP_BITFIELDS:
-#ifdef BMP_SUPPORT_BITFIELD
- _bmp_encode_bitfields(bmp_ptr, dst_buf, dst_size);
-#endif
- break;
- case BMP_RLE8:
- _bmp_encode_rle8(bmp_ptr, dst_buf, dst_size);
- break;
- case BMP_RLE4:
- _bmp_encode_rle4(bmp_ptr, dst_buf, dst_size);
- break;
- default:;
- }
- bmp_ptr->file_header.bfSize = dst_size;
- WriteFileHeader(&bmp_ptr->file_header, dst_buf);
- return TRUE;
-}
+// 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 "fx_bmp.h" + +#include <algorithm> + +namespace { + +const size_t kBmpCoreHeaderSize = 12; +const size_t kBmpInfoHeaderSize = 40; + +} // namespace + +FX_DWORD _GetDWord_LSBFirst(uint8_t* p) { + return p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24); +} +FX_WORD _GetWord_LSBFirst(uint8_t* p) { + return p[0] | (p[1] << 8); +} +void _SetDWord_LSBFirst(uint8_t* p, FX_DWORD v) { + p[0] = (uint8_t)v; + p[1] = (uint8_t)(v >> 8); + p[2] = (uint8_t)(v >> 16); + p[3] = (uint8_t)(v >> 24); +} +void _SetWord_LSBFirst(uint8_t* p, FX_WORD v) { + p[0] = (uint8_t)v; + p[1] = (uint8_t)(v >> 8); +} +void _bmp_error(bmp_decompress_struct_p bmp_ptr, const FX_CHAR* err_msg) { + if (bmp_ptr != NULL && bmp_ptr->_bmp_error_fn != NULL) { + bmp_ptr->_bmp_error_fn(bmp_ptr, err_msg); + } +} +bmp_decompress_struct_p _bmp_create_decompress() { + bmp_decompress_struct_p bmp_ptr = FX_Alloc(bmp_decompress_struct, 1); + if (bmp_ptr == NULL) { + return NULL; + } + FXSYS_memset(bmp_ptr, 0, sizeof(bmp_decompress_struct)); + bmp_ptr->decode_status = BMP_D_STATUS_HEADER; + bmp_ptr->bmp_header_ptr = FX_Alloc(BmpFileHeader, 1); + return bmp_ptr; +} +void _bmp_destroy_decompress(bmp_decompress_struct_pp bmp_ptr_ptr) { + if (bmp_ptr_ptr == NULL || *bmp_ptr_ptr == NULL) { + return; + } + bmp_decompress_struct_p bmp_ptr = *bmp_ptr_ptr; + *bmp_ptr_ptr = NULL; + if (bmp_ptr->out_row_buffer != NULL) { + FX_Free(bmp_ptr->out_row_buffer); + } + if (bmp_ptr->pal_ptr != NULL) { + FX_Free(bmp_ptr->pal_ptr); + } + if (bmp_ptr->bmp_header_ptr != NULL) { + FX_Free(bmp_ptr->bmp_header_ptr); + } + FX_Free(bmp_ptr); +} +int32_t _bmp_read_header(bmp_decompress_struct_p bmp_ptr) { + if (bmp_ptr == NULL) { + return 0; + } + FX_DWORD skip_size_org = bmp_ptr->skip_size; + if (bmp_ptr->decode_status == BMP_D_STATUS_HEADER) { + ASSERT(sizeof(BmpFileHeader) == 14); + BmpFileHeader* bmp_header_ptr = NULL; + if (_bmp_read_data(bmp_ptr, (uint8_t**)&bmp_header_ptr, 14) == NULL) { + return 2; + } + bmp_ptr->bmp_header_ptr->bfType = + _GetWord_LSBFirst((uint8_t*)&bmp_header_ptr->bfType); + bmp_ptr->bmp_header_ptr->bfOffBits = + _GetDWord_LSBFirst((uint8_t*)&bmp_header_ptr->bfOffBits); + bmp_ptr->data_size = _GetDWord_LSBFirst((uint8_t*)&bmp_header_ptr->bfSize); + if (bmp_ptr->bmp_header_ptr->bfType != BMP_SIGNATURE) { + _bmp_error(bmp_ptr, "Not A Bmp Image"); + return 0; + } + if (bmp_ptr->avail_in < sizeof(FX_DWORD)) { + bmp_ptr->skip_size = skip_size_org; + return 2; + } + bmp_ptr->img_ifh_size = + _GetDWord_LSBFirst(bmp_ptr->next_in + bmp_ptr->skip_size); + bmp_ptr->pal_type = 0; + static_assert(sizeof(BmpCoreHeader) == kBmpCoreHeaderSize, + "BmpCoreHeader has wrong size"); + static_assert(sizeof(BmpInfoHeader) == kBmpInfoHeaderSize, + "BmpInfoHeader has wrong size"); + switch (bmp_ptr->img_ifh_size) { + case kBmpCoreHeaderSize: { + bmp_ptr->pal_type = 1; + BmpCoreHeaderPtr bmp_core_header_ptr = NULL; + if (_bmp_read_data(bmp_ptr, (uint8_t**)&bmp_core_header_ptr, + bmp_ptr->img_ifh_size) == NULL) { + bmp_ptr->skip_size = skip_size_org; + return 2; + } + bmp_ptr->width = (FX_DWORD)_GetWord_LSBFirst( + (uint8_t*)&bmp_core_header_ptr->bcWidth); + bmp_ptr->height = (FX_DWORD)_GetWord_LSBFirst( + (uint8_t*)&bmp_core_header_ptr->bcHeight); + bmp_ptr->bitCounts = + _GetWord_LSBFirst((uint8_t*)&bmp_core_header_ptr->bcBitCount); + bmp_ptr->compress_flag = BMP_RGB; + bmp_ptr->imgTB_flag = FALSE; + } break; + case kBmpInfoHeaderSize: { + BmpInfoHeaderPtr bmp_info_header_ptr = NULL; + if (_bmp_read_data(bmp_ptr, (uint8_t**)&bmp_info_header_ptr, + bmp_ptr->img_ifh_size) == NULL) { + bmp_ptr->skip_size = skip_size_org; + return 2; + } + bmp_ptr->width = + _GetDWord_LSBFirst((uint8_t*)&bmp_info_header_ptr->biWidth); + bmp_ptr->height = + _GetDWord_LSBFirst((uint8_t*)&bmp_info_header_ptr->biHeight); + bmp_ptr->bitCounts = + _GetWord_LSBFirst((uint8_t*)&bmp_info_header_ptr->biBitCount); + bmp_ptr->compress_flag = + _GetDWord_LSBFirst((uint8_t*)&bmp_info_header_ptr->biCompression); + bmp_ptr->color_used = + _GetDWord_LSBFirst((uint8_t*)&bmp_info_header_ptr->biClrUsed); + bmp_ptr->dpi_x = (int32_t)_GetDWord_LSBFirst( + (uint8_t*)&bmp_info_header_ptr->biXPelsPerMeter); + bmp_ptr->dpi_y = (int32_t)_GetDWord_LSBFirst( + (uint8_t*)&bmp_info_header_ptr->biYPelsPerMeter); + if (bmp_ptr->height < 0) { + bmp_ptr->height = -bmp_ptr->height; + bmp_ptr->imgTB_flag = TRUE; + } + } break; + default: { + if (bmp_ptr->img_ifh_size > + std::min(kBmpInfoHeaderSize, sizeof(BmpInfoHeader))) { + BmpInfoHeaderPtr bmp_info_header_ptr = NULL; + if (_bmp_read_data(bmp_ptr, (uint8_t**)&bmp_info_header_ptr, + bmp_ptr->img_ifh_size) == NULL) { + bmp_ptr->skip_size = skip_size_org; + return 2; + } + FX_WORD biPlanes; + bmp_ptr->width = + _GetDWord_LSBFirst((uint8_t*)&bmp_info_header_ptr->biWidth); + bmp_ptr->height = + _GetDWord_LSBFirst((uint8_t*)&bmp_info_header_ptr->biHeight); + bmp_ptr->bitCounts = + _GetWord_LSBFirst((uint8_t*)&bmp_info_header_ptr->biBitCount); + bmp_ptr->compress_flag = + _GetDWord_LSBFirst((uint8_t*)&bmp_info_header_ptr->biCompression); + bmp_ptr->color_used = + _GetDWord_LSBFirst((uint8_t*)&bmp_info_header_ptr->biClrUsed); + biPlanes = + _GetWord_LSBFirst((uint8_t*)&bmp_info_header_ptr->biPlanes); + bmp_ptr->dpi_x = _GetDWord_LSBFirst( + (uint8_t*)&bmp_info_header_ptr->biXPelsPerMeter); + bmp_ptr->dpi_y = _GetDWord_LSBFirst( + (uint8_t*)&bmp_info_header_ptr->biYPelsPerMeter); + if (bmp_ptr->height < 0) { + bmp_ptr->height = -bmp_ptr->height; + bmp_ptr->imgTB_flag = TRUE; + } + if (bmp_ptr->compress_flag == BMP_RGB && biPlanes == 1 && + bmp_ptr->color_used == 0) { + break; + } + } + _bmp_error(bmp_ptr, "Unsupported Bmp File"); + return 0; + } + } + ASSERT(bmp_ptr->width > 0); + ASSERT(bmp_ptr->compress_flag <= BMP_BITFIELDS); + switch (bmp_ptr->bitCounts) { + case 1: + case 4: + case 8: + case 16: + case 24: { + if (bmp_ptr->color_used > ((FX_DWORD)1) << bmp_ptr->bitCounts) { + _bmp_error(bmp_ptr, "The Bmp File Is Corrupt"); + return 0; + } + } + case 32: { + if (bmp_ptr->width <= 0 || bmp_ptr->compress_flag > BMP_BITFIELDS) { + _bmp_error(bmp_ptr, "The Bmp File Is Corrupt"); + return 0; + } + } break; + default: + _bmp_error(bmp_ptr, "The Bmp File Is Corrupt"); + return 0; + } + bmp_ptr->src_row_bytes = BMP_WIDTHBYTES(bmp_ptr->width, bmp_ptr->bitCounts); + switch (bmp_ptr->bitCounts) { + case 1: + case 4: + case 8: + bmp_ptr->out_row_bytes = BMP_WIDTHBYTES(bmp_ptr->width, 8); + bmp_ptr->components = 1; + break; + case 16: + case 24: + bmp_ptr->out_row_bytes = BMP_WIDTHBYTES(bmp_ptr->width, 24); + bmp_ptr->components = 3; + break; + case 32: + bmp_ptr->out_row_bytes = bmp_ptr->src_row_bytes; + bmp_ptr->components = 4; + break; + } + if (bmp_ptr->out_row_buffer != NULL) { + FX_Free(bmp_ptr->out_row_buffer); + bmp_ptr->out_row_buffer = NULL; + } + bmp_ptr->out_row_buffer = FX_Alloc(uint8_t, bmp_ptr->out_row_bytes); + BMP_PTR_NOT_NULL(bmp_ptr->out_row_buffer, bmp_ptr); + FXSYS_memset(bmp_ptr->out_row_buffer, 0, bmp_ptr->out_row_bytes); + _bmp_save_decoding_status(bmp_ptr, BMP_D_STATUS_PAL); + } + if (bmp_ptr->decode_status == BMP_D_STATUS_PAL) { + skip_size_org = bmp_ptr->skip_size; +#ifdef BMP_SUPPORT_BITFIELD + if (bmp_ptr->compress_flag == BMP_BITFIELDS) { + if (bmp_ptr->bitCounts != 16 && bmp_ptr->bitCounts != 32) { + _bmp_error(bmp_ptr, "The Bmp File Is Corrupt"); + return 0; + } + FX_DWORD* mask; + if (_bmp_read_data(bmp_ptr, (uint8_t**)&mask, 3 * sizeof(FX_DWORD)) == + NULL) { + bmp_ptr->skip_size = skip_size_org; + return 2; + } + bmp_ptr->mask_red = _GetDWord_LSBFirst((uint8_t*)&mask[0]); + bmp_ptr->mask_green = _GetDWord_LSBFirst((uint8_t*)&mask[1]); + bmp_ptr->mask_blue = _GetDWord_LSBFirst((uint8_t*)&mask[2]); + if (bmp_ptr->mask_red & bmp_ptr->mask_green || + bmp_ptr->mask_red & bmp_ptr->mask_blue || + bmp_ptr->mask_green & bmp_ptr->mask_blue) { + _bmp_error(bmp_ptr, "The Bitfield Bmp File Is Corrupt"); + return 0; + } + if (bmp_ptr->bmp_header_ptr->bfOffBits < 26 + bmp_ptr->img_ifh_size) { + bmp_ptr->bmp_header_ptr->bfOffBits = 26 + bmp_ptr->img_ifh_size; + } + _bmp_save_decoding_status(bmp_ptr, BMP_D_STATUS_DATA_PRE); + return 1; + } else if (bmp_ptr->bitCounts == 16) { + bmp_ptr->mask_red = 0x7C00; + bmp_ptr->mask_green = 0x03E0; + bmp_ptr->mask_blue = 0x001F; + } +#else + if (bmp_ptr->compress_flag == BMP_BITFIELDS || bmp_ptr->bitCounts == 16) { + _bmp_error(bmp_ptr, "Unsupported Bitfield Bmp File"); + return 0; + } +#endif + bmp_ptr->pal_num = 0; + if (bmp_ptr->bitCounts < 16) { + bmp_ptr->pal_num = 1 << bmp_ptr->bitCounts; + if (bmp_ptr->color_used != 0) { + bmp_ptr->pal_num = bmp_ptr->color_used; + } + uint8_t* src_pal_ptr = NULL; + FX_DWORD src_pal_size = bmp_ptr->pal_num * (bmp_ptr->pal_type ? 3 : 4); + if (_bmp_read_data(bmp_ptr, (uint8_t**)&src_pal_ptr, src_pal_size) == + NULL) { + bmp_ptr->skip_size = skip_size_org; + return 2; + } + if (bmp_ptr->pal_ptr != NULL) { + FX_Free(bmp_ptr->pal_ptr); + bmp_ptr->pal_ptr = NULL; + } + bmp_ptr->pal_ptr = FX_Alloc(FX_DWORD, bmp_ptr->pal_num); + BMP_PTR_NOT_NULL(bmp_ptr->pal_ptr, bmp_ptr); + int32_t src_pal_index = 0; + if (bmp_ptr->pal_type == BMP_PAL_OLD) { + while (src_pal_index < bmp_ptr->pal_num) { + bmp_ptr->pal_ptr[src_pal_index++] = BMP_PAL_ENCODE( + 0x00, src_pal_ptr[2], src_pal_ptr[1], src_pal_ptr[0]); + src_pal_ptr += 3; + } + } else { + while (src_pal_index < bmp_ptr->pal_num) { + bmp_ptr->pal_ptr[src_pal_index++] = BMP_PAL_ENCODE( + src_pal_ptr[3], src_pal_ptr[2], src_pal_ptr[1], src_pal_ptr[0]); + src_pal_ptr += 4; + } + } + } + if (bmp_ptr->bmp_header_ptr->bfOffBits < + 14 + bmp_ptr->img_ifh_size + + bmp_ptr->pal_num * (bmp_ptr->pal_type ? 3 : 4)) { + bmp_ptr->bmp_header_ptr->bfOffBits = + 14 + bmp_ptr->img_ifh_size + + bmp_ptr->pal_num * (bmp_ptr->pal_type ? 3 : 4); + } + _bmp_save_decoding_status(bmp_ptr, BMP_D_STATUS_DATA_PRE); + } + return 1; +} +int32_t _bmp_decode_image(bmp_decompress_struct_p bmp_ptr) { + if (bmp_ptr->decode_status == BMP_D_STATUS_DATA_PRE) { + bmp_ptr->avail_in = 0; + if (!bmp_ptr->_bmp_get_data_position_fn( + bmp_ptr, bmp_ptr->bmp_header_ptr->bfOffBits)) { + bmp_ptr->decode_status = BMP_D_STATUS_TAIL; + _bmp_error(bmp_ptr, "The Bmp File Is Corrupt, Unexpected Stream Offset"); + return 0; + } + bmp_ptr->row_num = 0; + _bmp_save_decoding_status(bmp_ptr, BMP_D_STATUS_DATA); + } + if (bmp_ptr->decode_status == BMP_D_STATUS_DATA) { + switch (bmp_ptr->compress_flag) { + case BMP_RGB: + case BMP_BITFIELDS: + return _bmp_decode_rgb(bmp_ptr); + case BMP_RLE8: + return _bmp_decode_rle8(bmp_ptr); + case BMP_RLE4: + return _bmp_decode_rle4(bmp_ptr); + } + } + _bmp_error(bmp_ptr, "Any Uncontrol Error"); + return 0; +} +int32_t _bmp_decode_rgb(bmp_decompress_struct_p bmp_ptr) { + uint8_t* row_buf = bmp_ptr->out_row_buffer; + uint8_t* des_buf = NULL; + while (bmp_ptr->row_num < bmp_ptr->height) { + if (_bmp_read_data(bmp_ptr, &des_buf, bmp_ptr->src_row_bytes) == NULL) { + return 2; + } + _bmp_save_decoding_status(bmp_ptr, BMP_D_STATUS_DATA); + switch (bmp_ptr->bitCounts) { + case 1: { + for (int32_t col = 0; col < bmp_ptr->width; col++) { + *row_buf++ = des_buf[col >> 3] & (0x80 >> (col % 8)) ? 0x01 : 0x00; + } + } break; + case 4: { + for (int32_t col = 0; col < bmp_ptr->width; col++) { + *row_buf++ = (col & 0x01) ? (des_buf[col >> 1] & 0x0F) + : ((des_buf[col >> 1] & 0xF0) >> 4); + } + } break; +#ifdef BMP_SUPPORT_BITFIELD + case 16: { + FX_WORD* buf = (FX_WORD*)des_buf; + uint8_t blue_bits = 0; + uint8_t green_bits = 0; + uint8_t red_bits = 0; + for (int32_t i = 0; i < 16; i++) { + if ((bmp_ptr->mask_blue >> i) & 0x01) { + blue_bits++; + } + if ((bmp_ptr->mask_green >> i) & 0x01) { + green_bits++; + } + if ((bmp_ptr->mask_red >> i) & 0x01) { + red_bits++; + } + } + green_bits += blue_bits; + red_bits += green_bits; + blue_bits = 8 - blue_bits; + green_bits -= 8; + red_bits -= 8; + for (int32_t col = 0; col < bmp_ptr->width; col++) { + *buf = _GetWord_LSBFirst((uint8_t*)buf); + *row_buf++ = (uint8_t)((*buf & bmp_ptr->mask_blue) << blue_bits); + *row_buf++ = (uint8_t)((*buf & bmp_ptr->mask_green) >> green_bits); + *row_buf++ = (uint8_t)((*buf++ & bmp_ptr->mask_red) >> red_bits); + } + } break; +#endif + case 8: + case 24: + case 32: + FXSYS_memcpy(bmp_ptr->out_row_buffer, des_buf, bmp_ptr->src_row_bytes); + break; + } + row_buf = bmp_ptr->out_row_buffer; + bmp_ptr->_bmp_get_row_fn(bmp_ptr, + bmp_ptr->imgTB_flag + ? bmp_ptr->row_num++ + : (bmp_ptr->height - 1 - bmp_ptr->row_num++), + bmp_ptr->out_row_buffer); + } + _bmp_save_decoding_status(bmp_ptr, BMP_D_STATUS_TAIL); + return 1; +} +int32_t _bmp_decode_rle8(bmp_decompress_struct_p bmp_ptr) { + uint8_t* first_byte_ptr = NULL; + uint8_t* second_byte_ptr = NULL; + bmp_ptr->col_num = 0; + while (TRUE) { + FX_DWORD skip_size_org = bmp_ptr->skip_size; + if (_bmp_read_data(bmp_ptr, &first_byte_ptr, 1) == NULL) { + return 2; + } + switch (*first_byte_ptr) { + case RLE_MARKER: { + if (_bmp_read_data(bmp_ptr, &first_byte_ptr, 1) == NULL) { + bmp_ptr->skip_size = skip_size_org; + return 2; + } + switch (*first_byte_ptr) { + case RLE_EOL: { + if (bmp_ptr->row_num >= bmp_ptr->height) { + _bmp_save_decoding_status(bmp_ptr, BMP_D_STATUS_TAIL); + _bmp_error(bmp_ptr, "The Bmp File Is Corrupt"); + return 0; + } + bmp_ptr->_bmp_get_row_fn( + bmp_ptr, bmp_ptr->imgTB_flag + ? bmp_ptr->row_num++ + : (bmp_ptr->height - 1 - bmp_ptr->row_num++), + bmp_ptr->out_row_buffer); + bmp_ptr->col_num = 0; + FXSYS_memset(bmp_ptr->out_row_buffer, 0, bmp_ptr->out_row_bytes); + _bmp_save_decoding_status(bmp_ptr, BMP_D_STATUS_DATA); + continue; + } + case RLE_EOI: { + if (bmp_ptr->row_num < bmp_ptr->height) { + bmp_ptr->_bmp_get_row_fn( + bmp_ptr, bmp_ptr->imgTB_flag + ? bmp_ptr->row_num++ + : (bmp_ptr->height - 1 - bmp_ptr->row_num++), + bmp_ptr->out_row_buffer); + } + _bmp_save_decoding_status(bmp_ptr, BMP_D_STATUS_TAIL); + return 1; + } + case RLE_DELTA: { + uint8_t* delta_ptr; + if (_bmp_read_data(bmp_ptr, &delta_ptr, 2) == NULL) { + bmp_ptr->skip_size = skip_size_org; + return 2; + } + bmp_ptr->col_num += (int32_t)delta_ptr[0]; + int32_t bmp_row_num_next = bmp_ptr->row_num + (int32_t)delta_ptr[1]; + if (bmp_ptr->col_num >= bmp_ptr->out_row_bytes || + bmp_row_num_next >= bmp_ptr->height) { + _bmp_error(bmp_ptr, "The Bmp File Is Corrupt Or Not Supported"); + return 0; + } + while (bmp_ptr->row_num < bmp_row_num_next) { + FXSYS_memset(bmp_ptr->out_row_buffer, 0, bmp_ptr->out_row_bytes); + bmp_ptr->_bmp_get_row_fn( + bmp_ptr, bmp_ptr->imgTB_flag + ? bmp_ptr->row_num++ + : (bmp_ptr->height - 1 - bmp_ptr->row_num++), + bmp_ptr->out_row_buffer); + } + } break; + default: { + if ((int32_t)(*first_byte_ptr) > + bmp_ptr->src_row_bytes - bmp_ptr->col_num) { + _bmp_error(bmp_ptr, "The Bmp File Is Corrupt"); + return 0; + } + if (_bmp_read_data(bmp_ptr, &second_byte_ptr, + *first_byte_ptr & 1 ? *first_byte_ptr + 1 + : *first_byte_ptr) == NULL) { + bmp_ptr->skip_size = skip_size_org; + return 2; + } + FXSYS_memcpy(bmp_ptr->out_row_buffer + bmp_ptr->col_num, + second_byte_ptr, *first_byte_ptr); + bmp_ptr->col_num += (int32_t)(*first_byte_ptr); + } + } + } break; + default: { + if (_bmp_read_data(bmp_ptr, &second_byte_ptr, 1) == NULL) { + bmp_ptr->skip_size = skip_size_org; + return 2; + } + if ((int32_t)(*first_byte_ptr) > + bmp_ptr->src_row_bytes - bmp_ptr->col_num) { + _bmp_error(bmp_ptr, "The Bmp File Is Corrupt"); + return 0; + } + FXSYS_memset(bmp_ptr->out_row_buffer + bmp_ptr->col_num, + *second_byte_ptr, *first_byte_ptr); + bmp_ptr->col_num += (int32_t)(*first_byte_ptr); + } + } + } + _bmp_error(bmp_ptr, "Any Uncontrol Error"); + return 0; +} +int32_t _bmp_decode_rle4(bmp_decompress_struct_p bmp_ptr) { + uint8_t* first_byte_ptr = NULL; + uint8_t* second_byte_ptr = NULL; + bmp_ptr->col_num = 0; + while (TRUE) { + FX_DWORD skip_size_org = bmp_ptr->skip_size; + if (_bmp_read_data(bmp_ptr, &first_byte_ptr, 1) == NULL) { + return 2; + } + switch (*first_byte_ptr) { + case RLE_MARKER: { + if (_bmp_read_data(bmp_ptr, &first_byte_ptr, 1) == NULL) { + bmp_ptr->skip_size = skip_size_org; + return 2; + } + switch (*first_byte_ptr) { + case RLE_EOL: { + if (bmp_ptr->row_num >= bmp_ptr->height) { + _bmp_save_decoding_status(bmp_ptr, BMP_D_STATUS_TAIL); + _bmp_error(bmp_ptr, "The Bmp File Is Corrupt"); + return 0; + } + bmp_ptr->_bmp_get_row_fn( + bmp_ptr, bmp_ptr->imgTB_flag + ? bmp_ptr->row_num++ + : (bmp_ptr->height - 1 - bmp_ptr->row_num++), + bmp_ptr->out_row_buffer); + bmp_ptr->col_num = 0; + FXSYS_memset(bmp_ptr->out_row_buffer, 0, bmp_ptr->out_row_bytes); + _bmp_save_decoding_status(bmp_ptr, BMP_D_STATUS_DATA); + continue; + } + case RLE_EOI: { + if (bmp_ptr->row_num < bmp_ptr->height) { + bmp_ptr->_bmp_get_row_fn( + bmp_ptr, bmp_ptr->imgTB_flag + ? bmp_ptr->row_num++ + : (bmp_ptr->height - 1 - bmp_ptr->row_num++), + bmp_ptr->out_row_buffer); + } + _bmp_save_decoding_status(bmp_ptr, BMP_D_STATUS_TAIL); + return 1; + } + case RLE_DELTA: { + uint8_t* delta_ptr; + if (_bmp_read_data(bmp_ptr, &delta_ptr, 2) == NULL) { + bmp_ptr->skip_size = skip_size_org; + return 2; + } + bmp_ptr->col_num += (int32_t)delta_ptr[0]; + int32_t bmp_row_num_next = bmp_ptr->row_num + (int32_t)delta_ptr[1]; + if (bmp_ptr->col_num >= bmp_ptr->out_row_bytes || + bmp_row_num_next >= bmp_ptr->height) { + _bmp_error(bmp_ptr, "The Bmp File Is Corrupt Or Not Supported"); + return 0; + } + while (bmp_ptr->row_num < bmp_row_num_next) { + FXSYS_memset(bmp_ptr->out_row_buffer, 0, bmp_ptr->out_row_bytes); + bmp_ptr->_bmp_get_row_fn( + bmp_ptr, bmp_ptr->imgTB_flag + ? bmp_ptr->row_num++ + : (bmp_ptr->height - 1 - bmp_ptr->row_num++), + bmp_ptr->out_row_buffer); + } + } break; + default: { + uint8_t size = (uint8_t)(((FX_WORD)(*first_byte_ptr) + 1) >> 1); + if ((int32_t)*first_byte_ptr >= + bmp_ptr->out_row_bytes - bmp_ptr->col_num) { + if (size + (bmp_ptr->col_num >> 1) > bmp_ptr->src_row_bytes) { + _bmp_error(bmp_ptr, "The Bmp File Is Corrupt"); + return 0; + } + *first_byte_ptr = bmp_ptr->out_row_bytes - bmp_ptr->col_num - 1; + } + if (_bmp_read_data(bmp_ptr, &second_byte_ptr, + size & 1 ? size + 1 : size) == NULL) { + bmp_ptr->skip_size = skip_size_org; + return 2; + } + for (uint8_t i = 0; i < *first_byte_ptr; i++) { + if (i & 0x01) { + *(bmp_ptr->out_row_buffer + bmp_ptr->col_num++) = + (*second_byte_ptr++ & 0x0F); + } else { + *(bmp_ptr->out_row_buffer + bmp_ptr->col_num++) = + ((*second_byte_ptr & 0xF0) >> 4); + } + } + } + } + } break; + default: { + if (_bmp_read_data(bmp_ptr, &second_byte_ptr, 1) == NULL) { + bmp_ptr->skip_size = skip_size_org; + return 2; + } + if ((int32_t)*first_byte_ptr > + bmp_ptr->out_row_bytes - bmp_ptr->col_num) { + uint8_t size = (uint8_t)(((FX_WORD)(*first_byte_ptr) + 1) >> 1); + if (size + (bmp_ptr->col_num >> 1) > bmp_ptr->src_row_bytes) { + _bmp_error(bmp_ptr, "The Bmp File Is Corrupt"); + return 0; + } + *first_byte_ptr = bmp_ptr->out_row_bytes - bmp_ptr->col_num - 1; + } + for (uint8_t i = 0; i < *first_byte_ptr; i++) { + if (i & 0x01) { + *(bmp_ptr->out_row_buffer + bmp_ptr->col_num++) = + (*second_byte_ptr & 0x0F); + } else { + *(bmp_ptr->out_row_buffer + bmp_ptr->col_num++) = + ((*second_byte_ptr & 0xF0) >> 4); + } + } + } + } + } + _bmp_error(bmp_ptr, "Any Uncontrol Error"); + return 0; +} +uint8_t* _bmp_read_data(bmp_decompress_struct_p bmp_ptr, + uint8_t** des_buf_pp, + FX_DWORD data_size) { + if (bmp_ptr == NULL || bmp_ptr->avail_in < bmp_ptr->skip_size + data_size) { + return NULL; + } + *des_buf_pp = bmp_ptr->next_in + bmp_ptr->skip_size; + bmp_ptr->skip_size += data_size; + return *des_buf_pp; +} +void _bmp_save_decoding_status(bmp_decompress_struct_p bmp_ptr, + int32_t status) { + bmp_ptr->decode_status = status; + bmp_ptr->next_in += bmp_ptr->skip_size; + bmp_ptr->avail_in -= bmp_ptr->skip_size; + bmp_ptr->skip_size = 0; +} +void _bmp_input_buffer(bmp_decompress_struct_p bmp_ptr, + uint8_t* src_buf, + FX_DWORD src_size) { + bmp_ptr->next_in = src_buf; + bmp_ptr->avail_in = src_size; + bmp_ptr->skip_size = 0; +} +FX_DWORD _bmp_get_avail_input(bmp_decompress_struct_p bmp_ptr, + uint8_t** avial_buf_ptr) { + if (avial_buf_ptr != NULL) { + *avial_buf_ptr = NULL; + if (bmp_ptr->avail_in > 0) { + *avial_buf_ptr = bmp_ptr->next_in; + } + } + return bmp_ptr->avail_in; +} +bmp_compress_struct_p _bmp_create_compress() { + bmp_compress_struct_p bmp_ptr; + bmp_ptr = FX_Alloc(bmp_compress_struct, 1); + if (bmp_ptr) { + FXSYS_memset(bmp_ptr, 0, sizeof(bmp_compress_struct)); + } + return bmp_ptr; +} +void _bmp_destroy_compress(bmp_compress_struct_p bmp_ptr) { + if (bmp_ptr) { + if (bmp_ptr->src_free && bmp_ptr->src_buf) { + FX_Free(bmp_ptr->src_buf); + } + FX_Free(bmp_ptr); + } +} +static void WriteFileHeader(BmpFileHeaderPtr head_ptr, uint8_t* dst_buf) { + FX_DWORD offset; + offset = 0; + _SetWord_LSBFirst(&dst_buf[offset], head_ptr->bfType); + offset += 2; + _SetDWord_LSBFirst(&dst_buf[offset], head_ptr->bfSize); + offset += 4; + _SetWord_LSBFirst(&dst_buf[offset], head_ptr->bfReserved1); + offset += 2; + _SetWord_LSBFirst(&dst_buf[offset], head_ptr->bfReserved2); + offset += 2; + _SetDWord_LSBFirst(&dst_buf[offset], head_ptr->bfOffBits); + offset += 4; +} +static void WriteInfoHeader(BmpInfoHeaderPtr info_head_ptr, uint8_t* dst_buf) { + FX_DWORD offset; + offset = sizeof(BmpFileHeader); + _SetDWord_LSBFirst(&dst_buf[offset], info_head_ptr->biSize); + offset += 4; + _SetDWord_LSBFirst(&dst_buf[offset], (FX_DWORD)info_head_ptr->biWidth); + offset += 4; + _SetDWord_LSBFirst(&dst_buf[offset], (FX_DWORD)info_head_ptr->biHeight); + offset += 4; + _SetWord_LSBFirst(&dst_buf[offset], info_head_ptr->biPlanes); + offset += 2; + _SetWord_LSBFirst(&dst_buf[offset], info_head_ptr->biBitCount); + offset += 2; + _SetDWord_LSBFirst(&dst_buf[offset], info_head_ptr->biCompression); + offset += 4; + _SetDWord_LSBFirst(&dst_buf[offset], info_head_ptr->biSizeImage); + offset += 4; + _SetDWord_LSBFirst(&dst_buf[offset], + (FX_DWORD)info_head_ptr->biXPelsPerMeter); + offset += 4; + _SetDWord_LSBFirst(&dst_buf[offset], + (FX_DWORD)info_head_ptr->biYPelsPerMeter); + offset += 4; + _SetDWord_LSBFirst(&dst_buf[offset], info_head_ptr->biClrUsed); + offset += 4; + _SetDWord_LSBFirst(&dst_buf[offset], info_head_ptr->biClrImportant); + offset += 4; +} +#ifdef BMP_SUPPORT_BITFIELD +static void _bmp_encode_bitfields(bmp_compress_struct_p bmp_ptr, + uint8_t*& dst_buf, + FX_DWORD& dst_size) { + if (bmp_ptr->info_header.biBitCount != 16 && + bmp_ptr->info_header.biBitCount != 32) { + return; + } + FX_DWORD size, dst_pos, i; + size = bmp_ptr->src_pitch * bmp_ptr->src_row * + bmp_ptr->info_header.biBitCount / 16; + dst_pos = bmp_ptr->file_header.bfOffBits; + dst_size += size; + dst_buf = FX_Realloc(uint8_t, dst_buf, dst_size); + if (dst_buf == NULL) { + return; + } + FXSYS_memset(&dst_buf[dst_pos], 0, size); + FX_DWORD mask_red; + FX_DWORD mask_green; + FX_DWORD mask_blue; + mask_red = 0x7C00; + mask_green = 0x03E0; + mask_blue = 0x001F; + if (bmp_ptr->info_header.biCompression == BMP_BITFIELDS) { + if (bmp_ptr->bit_type == BMP_BIT_565) { + mask_red = 0xF800; + mask_green = 0x07E0; + mask_blue = 0x001F; + } + if (bmp_ptr->info_header.biBitCount == 32) { + mask_red = 0xFF0000; + mask_green = 0x00FF00; + mask_blue = 0x0000FF; + } + _SetDWord_LSBFirst(&dst_buf[dst_pos], mask_red); + dst_pos += 4; + _SetDWord_LSBFirst(&dst_buf[dst_pos], mask_green); + dst_pos += 4; + _SetDWord_LSBFirst(&dst_buf[dst_pos], mask_blue); + dst_pos += 4; + bmp_ptr->file_header.bfOffBits = dst_pos; + } + uint8_t blue_bits = 0; + uint8_t green_bits = 0; + uint8_t red_bits = 0; + for (i = 0; i < bmp_ptr->info_header.biBitCount; i++) { + if ((mask_blue >> i) & 0x01) { + blue_bits++; + } + if ((mask_green >> i) & 0x01) { + green_bits++; + } + if ((mask_red >> i) & 0x01) { + red_bits++; + } + } + green_bits += blue_bits; + red_bits += green_bits; + blue_bits = 8 - blue_bits; + green_bits -= 8; + red_bits -= 8; + i = 0; + for (int32_t row_num = bmp_ptr->src_row - 1; row_num > -1; row_num--, i = 0) { + while (i < bmp_ptr->src_width * bmp_ptr->src_bpp / 8) { + uint8_t b = bmp_ptr->src_buf[row_num * bmp_ptr->src_pitch + i++]; + uint8_t g = bmp_ptr->src_buf[row_num * bmp_ptr->src_pitch + i++]; + uint8_t r = bmp_ptr->src_buf[row_num * bmp_ptr->src_pitch + i++]; + if (bmp_ptr->src_bpp == 32) { + i++; + } + FX_DWORD pix_val = 0; + pix_val |= (b >> blue_bits) & mask_blue; + pix_val |= (g << green_bits) & mask_green; + pix_val |= (r << red_bits) & mask_red; + if (bmp_ptr->info_header.biBitCount == 16) { + _SetWord_LSBFirst(&dst_buf[dst_pos], (FX_WORD)pix_val); + dst_pos += 2; + } else { + _SetDWord_LSBFirst(&dst_buf[dst_pos], pix_val); + dst_pos += 4; + } + } + } + dst_size = dst_pos; +} +#endif +static void _bmp_encode_rgb(bmp_compress_struct_p bmp_ptr, + uint8_t*& dst_buf, + FX_DWORD& dst_size) { + if (bmp_ptr->info_header.biBitCount == 16) { +#ifdef BMP_SUPPORT_BITFIELD + _bmp_encode_bitfields(bmp_ptr, dst_buf, dst_size); +#endif + return; + } + FX_DWORD size, dst_pos; + FX_DWORD dst_pitch = + (bmp_ptr->src_width * bmp_ptr->info_header.biBitCount + 31) / 32 * 4; + size = dst_pitch * bmp_ptr->src_row; + dst_pos = bmp_ptr->file_header.bfOffBits; + dst_size += size; + dst_buf = FX_Realloc(uint8_t, dst_buf, dst_size); + if (dst_buf == NULL) { + return; + } + FXSYS_memset(&dst_buf[dst_pos], 0, size); + for (int32_t row_num = bmp_ptr->src_row - 1; row_num > -1; row_num--) { + FXSYS_memcpy(&dst_buf[dst_pos], + &bmp_ptr->src_buf[row_num * bmp_ptr->src_pitch], + bmp_ptr->src_pitch); + dst_pos += dst_pitch; + } + dst_size = dst_pos; +} +static uint8_t _bmp_rle8_search(const uint8_t* buf, int32_t len) { + uint8_t num; + num = 1; + while (num < len) { + if (buf[num - 1] != buf[num] || num == 0xFF) { + break; + } + num++; + } + return num; +} +static void _bmp_encode_rle8(bmp_compress_struct_p bmp_ptr, + uint8_t*& dst_buf, + FX_DWORD& dst_size) { + FX_DWORD size, dst_pos, index; + uint8_t rle[2] = {0}; + size = bmp_ptr->src_pitch * bmp_ptr->src_row * 2; + dst_pos = bmp_ptr->file_header.bfOffBits; + dst_size += size; + dst_buf = FX_Realloc(uint8_t, dst_buf, dst_size); + if (dst_buf == NULL) { + return; + } + FXSYS_memset(&dst_buf[dst_pos], 0, size); + for (int32_t row_num = bmp_ptr->src_row - 1, i = 0; row_num > -1;) { + index = row_num * bmp_ptr->src_pitch; + rle[0] = _bmp_rle8_search(&bmp_ptr->src_buf[index + i], size - index - i); + rle[1] = bmp_ptr->src_buf[index + i]; + if (i + rle[0] >= (int32_t)bmp_ptr->src_pitch) { + rle[0] = uint8_t(bmp_ptr->src_pitch - i); + if (rle[0]) { + dst_buf[dst_pos++] = rle[0]; + dst_buf[dst_pos++] = rle[1]; + } + dst_buf[dst_pos++] = RLE_MARKER; + dst_buf[dst_pos++] = RLE_EOL; + i = 0; + row_num--; + } else { + i += rle[0]; + dst_buf[dst_pos++] = rle[0]; + dst_buf[dst_pos++] = rle[1]; + } + } + dst_buf[dst_pos++] = RLE_MARKER; + dst_buf[dst_pos++] = RLE_EOI; + dst_size = dst_pos; +} +static uint8_t _bmp_rle4_search(const uint8_t* buf, int32_t len) { + uint8_t num; + num = 2; + while (num < len) { + if (buf[num - 2] != buf[num] || num == 0xFF) { + break; + } + num++; + } + return num; +} +static void _bmp_encode_rle4(bmp_compress_struct_p bmp_ptr, + uint8_t*& dst_buf, + FX_DWORD& dst_size) { + FX_DWORD size, dst_pos, index; + uint8_t rle[2] = {0}; + size = bmp_ptr->src_pitch * bmp_ptr->src_row; + dst_pos = bmp_ptr->file_header.bfOffBits; + dst_size += size; + dst_buf = FX_Realloc(uint8_t, dst_buf, dst_size); + if (dst_buf == NULL) { + return; + } + FXSYS_memset(&dst_buf[dst_pos], 0, size); + for (int32_t row_num = bmp_ptr->src_row - 1, i = 0; row_num > -1; + rle[1] = 0) { + index = row_num * bmp_ptr->src_pitch; + rle[0] = _bmp_rle4_search(&bmp_ptr->src_buf[index + i], size - index - i); + rle[1] |= (bmp_ptr->src_buf[index + i] & 0x0f) << 4; + rle[1] |= bmp_ptr->src_buf[index + i + 1] & 0x0f; + if (i + rle[0] >= (int32_t)bmp_ptr->src_pitch) { + rle[0] = uint8_t(bmp_ptr->src_pitch - i); + if (rle[0]) { + dst_buf[dst_pos++] = rle[0]; + dst_buf[dst_pos++] = rle[1]; + } + dst_buf[dst_pos++] = RLE_MARKER; + dst_buf[dst_pos++] = RLE_EOL; + i = 0; + row_num--; + } else { + i += rle[0]; + dst_buf[dst_pos++] = rle[0]; + dst_buf[dst_pos++] = rle[1]; + } + } + dst_buf[dst_pos++] = RLE_MARKER; + dst_buf[dst_pos++] = RLE_EOI; + dst_size = dst_pos; +} +FX_BOOL _bmp_encode_image(bmp_compress_struct_p bmp_ptr, + uint8_t*& dst_buf, + FX_DWORD& dst_size) { + FX_DWORD head_size = sizeof(BmpFileHeader) + sizeof(BmpInfoHeader); + FX_DWORD pal_size = sizeof(FX_DWORD) * bmp_ptr->pal_num; + if (bmp_ptr->info_header.biClrUsed > 0 && + bmp_ptr->info_header.biClrUsed < bmp_ptr->pal_num) { + pal_size = sizeof(FX_DWORD) * bmp_ptr->info_header.biClrUsed; + } + dst_size = head_size + sizeof(FX_DWORD) * bmp_ptr->pal_num; + dst_buf = FX_TryAlloc(uint8_t, dst_size); + if (dst_buf == NULL) { + return FALSE; + } + FXSYS_memset(dst_buf, 0, dst_size); + bmp_ptr->file_header.bfOffBits = head_size; + if (bmp_ptr->pal_ptr && pal_size) { + FXSYS_memcpy(&dst_buf[head_size], bmp_ptr->pal_ptr, pal_size); + bmp_ptr->file_header.bfOffBits += pal_size; + } + WriteInfoHeader(&bmp_ptr->info_header, dst_buf); + switch (bmp_ptr->info_header.biCompression) { + case BMP_RGB: + _bmp_encode_rgb(bmp_ptr, dst_buf, dst_size); + break; + case BMP_BITFIELDS: +#ifdef BMP_SUPPORT_BITFIELD + _bmp_encode_bitfields(bmp_ptr, dst_buf, dst_size); +#endif + break; + case BMP_RLE8: + _bmp_encode_rle8(bmp_ptr, dst_buf, dst_size); + break; + case BMP_RLE4: + _bmp_encode_rle4(bmp_ptr, dst_buf, dst_size); + break; + default:; + } + bmp_ptr->file_header.bfSize = dst_size; + WriteFileHeader(&bmp_ptr->file_header, dst_buf); + return TRUE; +} |