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-rw-r--r--core/fxcodec/lbmp/fx_bmp.cpp948
-rw-r--r--core/fxcodec/lbmp/fx_bmp.h155
2 files changed, 1103 insertions, 0 deletions
diff --git a/core/fxcodec/lbmp/fx_bmp.cpp b/core/fxcodec/lbmp/fx_bmp.cpp
new file mode 100644
index 0000000000..15384d56ff
--- /dev/null
+++ b/core/fxcodec/lbmp/fx_bmp.cpp
@@ -0,0 +1,948 @@
+// 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/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;
+}
diff --git a/core/fxcodec/lbmp/fx_bmp.h b/core/fxcodec/lbmp/fx_bmp.h
new file mode 100644
index 0000000000..2ef0c0a8b0
--- /dev/null
+++ b/core/fxcodec/lbmp/fx_bmp.h
@@ -0,0 +1,155 @@
+// 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
+
+#ifndef CORE_FXCODEC_LBMP_FX_BMP_H_
+#define CORE_FXCODEC_LBMP_FX_BMP_H_
+
+#include <setjmp.h>
+
+#include "core/include/fxcrt/fx_basic.h"
+
+#define BMP_WIDTHBYTES(width, bitCount) ((width * bitCount) + 31) / 32 * 4
+#define BMP_PAL_ENCODE(a, r, g, b) \
+ (((FX_DWORD)(a) << 24) | ((r) << 16) | ((g) << 8) | (b))
+#define BMP_D_STATUS_HEADER 0x01
+#define BMP_D_STATUS_PAL 0x02
+#define BMP_D_STATUS_DATA_PRE 0x03
+#define BMP_D_STATUS_DATA 0x04
+#define BMP_D_STATUS_TAIL 0x00
+#define BMP_SIGNATURE 0x4D42
+#define BMP_PAL_NEW 0
+#define BMP_PAL_OLD 1
+#define RLE_MARKER 0
+#define RLE_EOL 0
+#define RLE_EOI 1
+#define RLE_DELTA 2
+#define BMP_RGB 0L
+#define BMP_RLE8 1L
+#define BMP_RLE4 2L
+#define BMP_BITFIELDS 3L
+#define BMP_BIT_555 0
+#define BMP_BIT_565 1
+#define BMP_MAX_ERROR_SIZE 256
+#pragma pack(1)
+typedef struct tagBmpFileHeader {
+ FX_WORD bfType;
+ FX_DWORD bfSize;
+ FX_WORD bfReserved1;
+ FX_WORD bfReserved2;
+ FX_DWORD bfOffBits;
+} BmpFileHeader, *BmpFileHeaderPtr;
+typedef struct tagBmpCoreHeader {
+ FX_DWORD bcSize;
+ FX_WORD bcWidth;
+ FX_WORD bcHeight;
+ FX_WORD bcPlanes;
+ FX_WORD bcBitCount;
+} BmpCoreHeader, *BmpCoreHeaderPtr;
+typedef struct tagBmpInfoHeader {
+ FX_DWORD biSize;
+ int32_t biWidth;
+ int32_t biHeight;
+ FX_WORD biPlanes;
+ FX_WORD biBitCount;
+ FX_DWORD biCompression;
+ FX_DWORD biSizeImage;
+ int32_t biXPelsPerMeter;
+ int32_t biYPelsPerMeter;
+ FX_DWORD biClrUsed;
+ FX_DWORD biClrImportant;
+} BmpInfoHeader, *BmpInfoHeaderPtr;
+#pragma pack()
+
+typedef struct tag_bmp_decompress_struct bmp_decompress_struct;
+typedef bmp_decompress_struct* bmp_decompress_struct_p;
+typedef bmp_decompress_struct_p* bmp_decompress_struct_pp;
+struct tag_bmp_decompress_struct {
+ jmp_buf jmpbuf;
+ FX_CHAR* err_ptr;
+ void (*bmp_error_fn)(bmp_decompress_struct_p gif_ptr, const FX_CHAR* err_msg);
+
+ void* context_ptr;
+
+ BmpFileHeaderPtr bmp_header_ptr;
+ BmpInfoHeaderPtr bmp_infoheader_ptr;
+ int32_t width;
+ int32_t height;
+ FX_DWORD compress_flag;
+ int32_t components;
+ int32_t src_row_bytes;
+ int32_t out_row_bytes;
+ uint8_t* out_row_buffer;
+ FX_WORD bitCounts;
+ FX_DWORD color_used;
+ FX_BOOL imgTB_flag;
+ int32_t pal_num;
+ int32_t pal_type;
+ FX_DWORD* pal_ptr;
+ FX_DWORD data_size;
+ FX_DWORD img_data_offset;
+ FX_DWORD img_ifh_size;
+ int32_t row_num;
+ int32_t col_num;
+ int32_t dpi_x;
+ int32_t dpi_y;
+ FX_DWORD mask_red;
+ FX_DWORD mask_green;
+ FX_DWORD mask_blue;
+
+ FX_BOOL (*bmp_get_data_position_fn)(bmp_decompress_struct_p bmp_ptr,
+ FX_DWORD cur_pos);
+ void (*bmp_get_row_fn)(bmp_decompress_struct_p bmp_ptr,
+ int32_t row_num,
+ uint8_t* row_buf);
+ uint8_t* next_in;
+ FX_DWORD avail_in;
+ FX_DWORD skip_size;
+ int32_t decode_status;
+};
+void bmp_error(bmp_decompress_struct_p bmp_ptr, const FX_CHAR* err_msg);
+bmp_decompress_struct_p bmp_create_decompress();
+void bmp_destroy_decompress(bmp_decompress_struct_pp bmp_ptr_ptr);
+int32_t bmp_read_header(bmp_decompress_struct_p bmp_ptr);
+int32_t bmp_decode_image(bmp_decompress_struct_p bmp_ptr);
+int32_t bmp_decode_rgb(bmp_decompress_struct_p bmp_ptr);
+int32_t bmp_decode_rle8(bmp_decompress_struct_p bmp_ptr);
+int32_t bmp_decode_rle4(bmp_decompress_struct_p bmp_ptr);
+uint8_t* bmp_read_data(bmp_decompress_struct_p bmp_ptr,
+ uint8_t** des_buf_pp,
+ FX_DWORD data_size);
+void bmp_save_decoding_status(bmp_decompress_struct_p bmp_ptr, int32_t status);
+void bmp_input_buffer(bmp_decompress_struct_p bmp_ptr,
+ uint8_t* src_buf,
+ FX_DWORD src_size);
+FX_DWORD bmp_get_avail_input(bmp_decompress_struct_p bmp_ptr,
+ uint8_t** avial_buf_ptr);
+typedef struct tag_bmp_compress_struct bmp_compress_struct;
+typedef bmp_compress_struct* bmp_compress_struct_p;
+typedef bmp_compress_struct_p* bmp_compress_struct_pp;
+struct tag_bmp_compress_struct {
+ BmpFileHeader file_header;
+ BmpInfoHeader info_header;
+ uint8_t* src_buf;
+ FX_DWORD src_pitch;
+ FX_DWORD src_row;
+ uint8_t src_bpp;
+ FX_DWORD src_width;
+ FX_BOOL src_free;
+ FX_DWORD* pal_ptr;
+ FX_WORD pal_num;
+ uint8_t bit_type;
+};
+
+bmp_compress_struct_p bmp_create_compress();
+void bmp_destroy_compress(bmp_compress_struct_p bmp_ptr);
+FX_BOOL bmp_encode_image(bmp_compress_struct_p bmp_ptr,
+ uint8_t*& dst_buf,
+ FX_DWORD& dst_size);
+
+FX_WORD GetWord_LSBFirst(uint8_t* p);
+void SetWord_LSBFirst(uint8_t* p, FX_WORD v);
+
+#endif // CORE_FXCODEC_LBMP_FX_BMP_H_
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-02 15:31:02 +0000