diff options
Diffstat (limited to 'core/src/fxcodec/lbmp/fx_bmp.cpp')
| -rw-r--r-- | core/src/fxcodec/lbmp/fx_bmp.cpp | 948 |
1 files changed, 0 insertions, 948 deletions
diff --git a/core/src/fxcodec/lbmp/fx_bmp.cpp b/core/src/fxcodec/lbmp/fx_bmp.cpp deleted file mode 100644 index 07e83a1618..0000000000 --- a/core/src/fxcodec/lbmp/fx_bmp.cpp +++ /dev/null @@ -1,948 +0,0 @@ -// 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 "core/src/fxcodec/lbmp/fx_bmp.h" - -#include <algorithm> - -namespace { - -const size_t kBmpCoreHeaderSize = 12; -const size_t kBmpInfoHeaderSize = 40; - -// TODO(thestig): Replace with FXDWORD_GET_LSBFIRST? -FX_DWORD GetDWord_LSBFirst(uint8_t* p) { - return p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24); -} - -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); -} -} // namespace - -FX_WORD GetWord_LSBFirst(uint8_t* p) { - return p[0] | (p[1] << 8); -} -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 && bmp_ptr->bmp_error_fn) { - 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) { - FX_Free(bmp_ptr->out_row_buffer); - } - FX_Free(bmp_ptr->pal_ptr); - 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 = - GetWord_LSBFirst((uint8_t*)&bmp_core_header_ptr->bcWidth); - bmp_ptr->height = - 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; - } - FX_Free(bmp_ptr->out_row_buffer); - bmp_ptr->out_row_buffer = FX_Alloc(uint8_t, bmp_ptr->out_row_bytes); - 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; - 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; - } - 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; - } - FX_Free(bmp_ptr->pal_ptr); - bmp_ptr->pal_ptr = FX_Alloc(FX_DWORD, bmp_ptr->pal_num); - 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; - 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; - 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) { - *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], info_head_ptr->biWidth); - offset += 4; - SetDWord_LSBFirst(&dst_buf[offset], 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], info_head_ptr->biXPelsPerMeter); - offset += 4; - SetDWord_LSBFirst(&dst_buf[offset], 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; -} -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], pix_val); - dst_pos += 2; - } else { - SetDWord_LSBFirst(&dst_buf[dst_pos], pix_val); - dst_pos += 4; - } - } - } - dst_size = dst_pos; -} - -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) { - bmp_encode_bitfields(bmp_ptr, dst_buf, dst_size); - 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: - bmp_encode_bitfields(bmp_ptr, dst_buf, dst_size); - 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: - break; - } - bmp_ptr->file_header.bfSize = dst_size; - WriteFileHeader(&bmp_ptr->file_header, dst_buf); - return TRUE; -} |