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Unified Diff: core/src/fxcodec/lbmp/fx_bmp.cpp

Issue 1800523005: Move core/src/ up to core/. (Closed) Base URL: https://pdfium.googlesource.com/pdfium.git@master
Patch Set: Created 4 years, 9 months ago
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Index: core/src/fxcodec/lbmp/fx_bmp.cpp
diff --git a/core/src/fxcodec/lbmp/fx_bmp.cpp b/core/src/fxcodec/lbmp/fx_bmp.cpp
deleted file mode 100644
index 07e83a1618c6c95b9d071c2dce0e9cf53098911e..0000000000000000000000000000000000000000
--- 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;
-}
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