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-rw-r--r--core/fxcodec/codec/ccodec_bmpmodule.cpp59
-rw-r--r--core/fxcodec/lbmp/fx_bmp.cpp709
-rw-r--r--core/fxcodec/lbmp/fx_bmp.h64
3 files changed, 393 insertions, 439 deletions
diff --git a/core/fxcodec/codec/ccodec_bmpmodule.cpp b/core/fxcodec/codec/ccodec_bmpmodule.cpp
index 15394f1356..9186553c7b 100644
--- a/core/fxcodec/codec/ccodec_bmpmodule.cpp
+++ b/core/fxcodec/codec/ccodec_bmpmodule.cpp
@@ -13,42 +13,7 @@
#include "core/fxge/fx_dib.h"
#include "third_party/base/ptr_util.h"
-class CBmpContext : public CCodec_BmpModule::Context {
- public:
- CBmpContext(bmp_decompress_struct_p pBmp,
- CCodec_BmpModule* pModule,
- CCodec_BmpModule::Delegate* pDelegate);
- ~CBmpContext() override;
-
- bmp_decompress_struct_p m_pBmp;
- CFX_UnownedPtr<CCodec_BmpModule> const m_pModule;
- CFX_UnownedPtr<CCodec_BmpModule::Delegate> const m_pDelegate;
- char m_szLastError[256];
-};
-
-extern "C" {
-
-static void bmp_error_data(bmp_decompress_struct_p pBmp, const char* err_msg) {
- strncpy(pBmp->err_ptr, err_msg, BMP_MAX_ERROR_SIZE - 1);
- longjmp(pBmp->jmpbuf, 1);
-}
-
-static void bmp_read_scanline(bmp_decompress_struct_p pBmp,
- int32_t row_num,
- uint8_t* row_buf) {
- auto* p = reinterpret_cast<CBmpContext*>(pBmp->context_ptr);
- p->m_pDelegate->BmpReadScanline(row_num, row_buf);
-}
-
-static bool bmp_get_data_position(bmp_decompress_struct_p pBmp,
- uint32_t rcd_pos) {
- auto* p = reinterpret_cast<CBmpContext*>(pBmp->context_ptr);
- return p->m_pDelegate->BmpInputImagePositionBuf(rcd_pos);
-}
-
-} // extern "C"
-
-CBmpContext::CBmpContext(bmp_decompress_struct_p pBmp,
+CBmpContext::CBmpContext(BMPDecompressor* pBmp,
CCodec_BmpModule* pModule,
CCodec_BmpModule::Delegate* pDelegate)
: m_pBmp(pBmp), m_pModule(pModule), m_pDelegate(pDelegate) {
@@ -65,16 +30,13 @@ CCodec_BmpModule::~CCodec_BmpModule() {}
std::unique_ptr<CCodec_BmpModule::Context> CCodec_BmpModule::Start(
Delegate* pDelegate) {
- bmp_decompress_struct_p pBmp = bmp_create_decompress();
+ BMPDecompressor* pBmp = bmp_create_decompress();
if (!pBmp)
return nullptr;
auto p = pdfium::MakeUnique<CBmpContext>(pBmp, this, pDelegate);
p->m_pBmp->context_ptr = p.get();
p->m_pBmp->err_ptr = p->m_szLastError;
- p->m_pBmp->bmp_error_fn = bmp_error_data;
- p->m_pBmp->bmp_get_row_fn = bmp_read_scanline;
- p->m_pBmp->bmp_get_data_position_fn = bmp_get_data_position;
return p;
}
@@ -87,13 +49,13 @@ int32_t CCodec_BmpModule::ReadHeader(Context* pContext,
uint32_t** pal_pp,
CFX_DIBAttribute* pAttribute) {
auto* ctx = static_cast<CBmpContext*>(pContext);
- if (setjmp(ctx->m_pBmp->jmpbuf)) {
+ if (setjmp(ctx->m_pBmp->jmpbuf))
return 0;
- }
- int32_t ret = bmp_read_header(ctx->m_pBmp);
- if (ret != 1) {
+
+ int32_t ret = ctx->m_pBmp->ReadHeader();
+ if (ret != 1)
return ret;
- }
+
*width = ctx->m_pBmp->width;
*height = ctx->m_pBmp->height;
*tb_flag = ctx->m_pBmp->imgTB_flag;
@@ -113,18 +75,19 @@ int32_t CCodec_BmpModule::LoadImage(Context* pContext) {
auto* ctx = static_cast<CBmpContext*>(pContext);
if (setjmp(ctx->m_pBmp->jmpbuf))
return 0;
- return bmp_decode_image(ctx->m_pBmp);
+
+ return ctx->m_pBmp->DecodeImage();
}
uint32_t CCodec_BmpModule::GetAvailInput(Context* pContext,
uint8_t** avail_buf_ptr) {
auto* ctx = static_cast<CBmpContext*>(pContext);
- return bmp_get_avail_input(ctx->m_pBmp, avail_buf_ptr);
+ return ctx->m_pBmp->GetAvailInput(avail_buf_ptr);
}
void CCodec_BmpModule::Input(Context* pContext,
const uint8_t* src_buf,
uint32_t src_size) {
auto* ctx = static_cast<CBmpContext*>(pContext);
- bmp_input_buffer(ctx->m_pBmp, (uint8_t*)src_buf, src_size);
+ ctx->m_pBmp->SetInputBuffer(const_cast<uint8_t*>(src_buf), src_size);
}
diff --git a/core/fxcodec/lbmp/fx_bmp.cpp b/core/fxcodec/lbmp/fx_bmp.cpp
index 5611329d39..f785505d22 100644
--- a/core/fxcodec/lbmp/fx_bmp.cpp
+++ b/core/fxcodec/lbmp/fx_bmp.cpp
@@ -36,330 +36,340 @@ uint8_t HalfRoundUp(uint8_t value) {
uint16_t GetWord_LSBFirst(uint8_t* p) {
return p[0] | (p[1] << 8);
}
+
void SetWord_LSBFirst(uint8_t* p, uint16_t v) {
p[0] = (uint8_t)v;
p[1] = (uint8_t)(v >> 8);
}
-void bmp_error(bmp_decompress_struct_p bmp_ptr, const 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);
- memset(bmp_ptr, 0, sizeof(bmp_decompress_struct));
+
+BMPDecompressor* bmp_create_decompress() {
+ BMPDecompressor* bmp_ptr = FX_Alloc(BMPDecompressor, 1);
+ memset(bmp_ptr, 0, sizeof(BMPDecompressor));
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) {
+
+void bmp_destroy_decompress(BMPDecompressor** bmp_ptr_ptr) {
if (!bmp_ptr_ptr || !*bmp_ptr_ptr)
return;
- bmp_decompress_struct_p bmp_ptr = *bmp_ptr_ptr;
+ BMPDecompressor* bmp_ptr = *bmp_ptr_ptr;
*bmp_ptr_ptr = nullptr;
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)
- return 0;
- uint32_t skip_size_org = bmp_ptr->skip_size;
- if (bmp_ptr->decode_status == BMP_D_STATUS_HEADER) {
+void BMPDecompressor::Error(const char* err_msg) {
+ strncpy(err_ptr, err_msg, BMP_MAX_ERROR_SIZE - 1);
+ longjmp(jmpbuf, 1);
+}
+
+void BMPDecompressor::ReadScanline(int32_t row_num, uint8_t* row_buf) {
+ auto* p = reinterpret_cast<CBmpContext*>(context_ptr);
+ p->m_pDelegate->BmpReadScanline(row_num, row_buf);
+}
+
+bool BMPDecompressor::GetDataPosition(uint32_t rcd_pos) {
+ auto* p = reinterpret_cast<CBmpContext*>(context_ptr);
+ return p->m_pDelegate->BmpInputImagePositionBuf(rcd_pos);
+}
+
+int32_t BMPDecompressor::ReadHeader() {
+ uint32_t skip_size_org = skip_size;
+ if (decode_status == BMP_D_STATUS_HEADER) {
ASSERT(sizeof(BmpFileHeader) == 14);
BmpFileHeader* bmp_header_ptr = nullptr;
- if (!bmp_read_data(bmp_ptr, (uint8_t**)&bmp_header_ptr, 14))
+ if (!ReadData((uint8_t**)&bmp_header_ptr, 14))
return 2;
- bmp_ptr->bmp_header_ptr->bfType =
+ bmp_header_ptr->bfType =
GetWord_LSBFirst((uint8_t*)&bmp_header_ptr->bfType);
- bmp_ptr->bmp_header_ptr->bfOffBits =
+ 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;
+ data_size = GetDWord_LSBFirst((uint8_t*)&bmp_header_ptr->bfSize);
+ if (bmp_header_ptr->bfType != BMP_SIGNATURE) {
+ Error("Not A Bmp Image");
+ NOTREACHED();
}
- if (bmp_ptr->avail_in < sizeof(uint32_t)) {
- bmp_ptr->skip_size = skip_size_org;
+ if (avail_in < sizeof(uint32_t)) {
+ 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;
+ img_ifh_size = GetDWord_LSBFirst(next_in + skip_size);
+ 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) {
+ switch (img_ifh_size) {
case kBmpCoreHeaderSize: {
- bmp_ptr->pal_type = 1;
+ pal_type = 1;
BmpCoreHeaderPtr bmp_core_header_ptr = nullptr;
- if (!bmp_read_data(bmp_ptr, (uint8_t**)&bmp_core_header_ptr,
- bmp_ptr->img_ifh_size)) {
- bmp_ptr->skip_size = skip_size_org;
+ if (!ReadData(reinterpret_cast<uint8_t**>(&bmp_core_header_ptr),
+ img_ifh_size)) {
+ 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;
+ width = GetWord_LSBFirst(
+ reinterpret_cast<uint8_t*>(&bmp_core_header_ptr->bcWidth));
+ height = GetWord_LSBFirst(
+ reinterpret_cast<uint8_t*>(&bmp_core_header_ptr->bcHeight));
+ bitCounts = GetWord_LSBFirst(
+ reinterpret_cast<uint8_t*>(&bmp_core_header_ptr->bcBitCount));
+ compress_flag = BMP_RGB;
+ imgTB_flag = false;
} break;
case kBmpInfoHeaderSize: {
BmpInfoHeaderPtr bmp_info_header_ptr = nullptr;
- if (!bmp_read_data(bmp_ptr, (uint8_t**)&bmp_info_header_ptr,
- bmp_ptr->img_ifh_size)) {
- bmp_ptr->skip_size = skip_size_org;
+ if (!ReadData((uint8_t**)&bmp_info_header_ptr, img_ifh_size)) {
+ 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 =
+ width = GetDWord_LSBFirst((uint8_t*)&bmp_info_header_ptr->biWidth);
+ height = GetDWord_LSBFirst((uint8_t*)&bmp_info_header_ptr->biHeight);
+ bitCounts =
GetWord_LSBFirst((uint8_t*)&bmp_info_header_ptr->biBitCount);
- bmp_ptr->compress_flag =
+ compress_flag =
GetDWord_LSBFirst((uint8_t*)&bmp_info_header_ptr->biCompression);
- bmp_ptr->color_used =
+ color_used =
GetDWord_LSBFirst((uint8_t*)&bmp_info_header_ptr->biClrUsed);
- bmp_ptr->dpi_x = (int32_t)GetDWord_LSBFirst(
+ dpi_x = (int32_t)GetDWord_LSBFirst(
(uint8_t*)&bmp_info_header_ptr->biXPelsPerMeter);
- bmp_ptr->dpi_y = (int32_t)GetDWord_LSBFirst(
+ dpi_y = (int32_t)GetDWord_LSBFirst(
(uint8_t*)&bmp_info_header_ptr->biYPelsPerMeter);
- if (bmp_ptr->height < 0) {
- if (bmp_ptr->height == std::numeric_limits<int>::min()) {
- bmp_error(bmp_ptr, "Unsupported height");
- return 0;
+ if (height < 0) {
+ if (height == std::numeric_limits<int>::min()) {
+ Error("Unsupported height");
+ NOTREACHED();
}
- bmp_ptr->height = -bmp_ptr->height;
- bmp_ptr->imgTB_flag = true;
+ height = -height;
+ imgTB_flag = true;
}
} break;
default: {
- if (bmp_ptr->img_ifh_size >
+ if (img_ifh_size >
std::min(kBmpInfoHeaderSize, sizeof(BmpInfoHeader))) {
BmpInfoHeaderPtr bmp_info_header_ptr = nullptr;
- if (!bmp_read_data(bmp_ptr, (uint8_t**)&bmp_info_header_ptr,
- bmp_ptr->img_ifh_size)) {
- bmp_ptr->skip_size = skip_size_org;
+ if (!ReadData((uint8_t**)&bmp_info_header_ptr, img_ifh_size)) {
+ skip_size = skip_size_org;
return 2;
}
uint16_t 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 =
+ width = GetDWord_LSBFirst((uint8_t*)&bmp_info_header_ptr->biWidth);
+ height = GetDWord_LSBFirst((uint8_t*)&bmp_info_header_ptr->biHeight);
+ bitCounts =
GetWord_LSBFirst((uint8_t*)&bmp_info_header_ptr->biBitCount);
- bmp_ptr->compress_flag =
+ compress_flag =
GetDWord_LSBFirst((uint8_t*)&bmp_info_header_ptr->biCompression);
- bmp_ptr->color_used =
+ 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(
+ dpi_x = GetDWord_LSBFirst(
(uint8_t*)&bmp_info_header_ptr->biXPelsPerMeter);
- bmp_ptr->dpi_y = GetDWord_LSBFirst(
+ dpi_y = GetDWord_LSBFirst(
(uint8_t*)&bmp_info_header_ptr->biYPelsPerMeter);
- if (bmp_ptr->height < 0) {
- if (bmp_ptr->height == std::numeric_limits<int>::min()) {
- bmp_error(bmp_ptr, "Unsupported height");
- return 0;
+ if (height < 0) {
+ if (height == std::numeric_limits<int>::min()) {
+ Error("Unsupported height");
+ NOTREACHED();
}
- bmp_ptr->height = -bmp_ptr->height;
- bmp_ptr->imgTB_flag = true;
+ height = -height;
+ imgTB_flag = true;
}
- if (bmp_ptr->compress_flag == BMP_RGB && biPlanes == 1 &&
- bmp_ptr->color_used == 0) {
+ if (compress_flag == BMP_RGB && biPlanes == 1 && color_used == 0) {
break;
}
}
- bmp_error(bmp_ptr, "Unsupported Bmp File");
- return 0;
+ Error("Unsupported Bmp File");
+ NOTREACHED();
}
}
- if (bmp_ptr->width <= 0 || bmp_ptr->width > BMP_MAX_WIDTH ||
- bmp_ptr->compress_flag > BMP_BITFIELDS) {
- bmp_error(bmp_ptr, "The Bmp File Is Corrupt");
- return 0;
+ if (width <= 0 || width > BMP_MAX_WIDTH || compress_flag > BMP_BITFIELDS) {
+ Error("The Bmp File Is Corrupt");
+ NOTREACHED();
}
- switch (bmp_ptr->bitCounts) {
+ switch (bitCounts) {
case 1:
case 4:
case 8:
case 16:
case 24: {
- if (bmp_ptr->color_used > ((uint32_t)1) << bmp_ptr->bitCounts) {
- bmp_error(bmp_ptr, "The Bmp File Is Corrupt");
- return 0;
+ if (color_used > ((uint32_t)1) << bitCounts) {
+ Error("The Bmp File Is Corrupt");
+ NOTREACHED();
}
}
case 32:
break;
default:
- bmp_error(bmp_ptr, "The Bmp File Is Corrupt");
- return 0;
+ Error("The Bmp File Is Corrupt");
+ NOTREACHED();
}
- bmp_ptr->src_row_bytes = BMP_WIDTHBYTES(bmp_ptr->width, bmp_ptr->bitCounts);
- switch (bmp_ptr->bitCounts) {
+ src_row_bytes = BMP_WIDTHBYTES(width, bitCounts);
+ switch (bitCounts) {
case 1:
case 4:
case 8:
- bmp_ptr->out_row_bytes = BMP_WIDTHBYTES(bmp_ptr->width, 8);
- bmp_ptr->components = 1;
+ out_row_bytes = BMP_WIDTHBYTES(width, 8);
+ components = 1;
break;
case 16:
case 24:
- bmp_ptr->out_row_bytes = BMP_WIDTHBYTES(bmp_ptr->width, 24);
- bmp_ptr->components = 3;
+ out_row_bytes = BMP_WIDTHBYTES(width, 24);
+ components = 3;
break;
case 32:
- bmp_ptr->out_row_bytes = bmp_ptr->src_row_bytes;
- bmp_ptr->components = 4;
+ out_row_bytes = src_row_bytes;
+ components = 4;
break;
}
- FX_Free(bmp_ptr->out_row_buffer);
- bmp_ptr->out_row_buffer = nullptr;
+ FX_Free(out_row_buffer);
+ out_row_buffer = nullptr;
- if (bmp_ptr->out_row_bytes <= 0) {
- bmp_error(bmp_ptr, "The Bmp File Is Corrupt");
- return 0;
+ if (out_row_bytes <= 0) {
+ Error("The Bmp File Is Corrupt");
+ NOTREACHED();
}
- bmp_ptr->out_row_buffer = FX_Alloc(uint8_t, bmp_ptr->out_row_bytes);
- memset(bmp_ptr->out_row_buffer, 0, bmp_ptr->out_row_bytes);
- bmp_save_decoding_status(bmp_ptr, BMP_D_STATUS_PAL);
+ out_row_buffer = FX_Alloc(uint8_t, out_row_bytes);
+ memset(out_row_buffer, 0, out_row_bytes);
+ SaveDecodingStatus(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;
+ if (decode_status == BMP_D_STATUS_PAL) {
+ skip_size_org = skip_size;
+ if (compress_flag == BMP_BITFIELDS) {
+ if (bitCounts != 16 && bitCounts != 32) {
+ Error("The Bmp File Is Corrupt");
+ NOTREACHED();
}
uint32_t* mask;
- if (bmp_read_data(bmp_ptr, (uint8_t**)&mask, 3 * sizeof(uint32_t)) ==
- nullptr) {
- bmp_ptr->skip_size = skip_size_org;
+ if (ReadData((uint8_t**)&mask, 3 * sizeof(uint32_t)) == nullptr) {
+ 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;
+ mask_red = GetDWord_LSBFirst((uint8_t*)&mask[0]);
+ mask_green = GetDWord_LSBFirst((uint8_t*)&mask[1]);
+ mask_blue = GetDWord_LSBFirst((uint8_t*)&mask[2]);
+ if (mask_red & mask_green || mask_red & mask_blue ||
+ mask_green & mask_blue) {
+ Error("The Bitfield Bmp File Is Corrupt");
+ NOTREACHED();
}
- 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;
+ if (bmp_header_ptr->bfOffBits < 26 + img_ifh_size) {
+ bmp_header_ptr->bfOffBits = 26 + img_ifh_size;
}
- bmp_save_decoding_status(bmp_ptr, BMP_D_STATUS_DATA_PRE);
+ SaveDecodingStatus(BMP_D_STATUS_DATA_PRE);
return 1;
- } else if (bmp_ptr->bitCounts == 16) {
- bmp_ptr->mask_red = 0x7C00;
- bmp_ptr->mask_green = 0x03E0;
- bmp_ptr->mask_blue = 0x001F;
+ } else if (bitCounts == 16) {
+ mask_red = 0x7C00;
+ mask_green = 0x03E0;
+ 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;
+ pal_num = 0;
+ if (bitCounts < 16) {
+ pal_num = 1 << bitCounts;
+ if (color_used != 0) {
+ pal_num = color_used;
}
uint8_t* src_pal_ptr = nullptr;
- uint32_t 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) ==
- nullptr) {
- bmp_ptr->skip_size = skip_size_org;
+ uint32_t src_pal_size = pal_num * (pal_type ? 3 : 4);
+ if (ReadData((uint8_t**)&src_pal_ptr, src_pal_size) == nullptr) {
+ skip_size = skip_size_org;
return 2;
}
- FX_Free(bmp_ptr->pal_ptr);
- bmp_ptr->pal_ptr = FX_Alloc(uint32_t, bmp_ptr->pal_num);
+ FX_Free(pal_ptr);
+ pal_ptr = FX_Alloc(uint32_t, 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(
+ if (pal_type == BMP_PAL_OLD) {
+ while (src_pal_index < pal_num) {
+ 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(
+ while (src_pal_index < pal_num) {
+ 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);
+ if (bmp_header_ptr->bfOffBits <
+ 14 + img_ifh_size + pal_num * (pal_type ? 3 : 4)) {
+ bmp_header_ptr->bfOffBits =
+ 14 + img_ifh_size + pal_num * (pal_type ? 3 : 4);
}
- bmp_save_decoding_status(bmp_ptr, BMP_D_STATUS_DATA_PRE);
+ SaveDecodingStatus(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);
+
+bool BMPDecompressor::ValidateFlag() const {
+ switch (compress_flag) {
+ case BMP_RGB:
+ case BMP_BITFIELDS:
+ case BMP_RLE8:
+ case BMP_RLE4:
+ return true;
+ default:
+ return false;
}
- 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);
+}
+
+int32_t BMPDecompressor::DecodeImage() {
+ if (decode_status == BMP_D_STATUS_DATA_PRE) {
+ avail_in = 0;
+ if (!GetDataPosition(bmp_header_ptr->bfOffBits)) {
+ decode_status = BMP_D_STATUS_TAIL;
+ Error("The Bmp File Is Corrupt, Unexpected Stream Offset");
+ NOTREACHED();
}
+ row_num = 0;
+ SaveDecodingStatus(BMP_D_STATUS_DATA);
+ }
+ if (decode_status != BMP_D_STATUS_DATA || !ValidateFlag()) {
+ Error("Any Uncontrol Error");
+ NOTREACHED();
+ }
+ switch (compress_flag) {
+ case BMP_RGB:
+ case BMP_BITFIELDS:
+ return DecodeRGB();
+ case BMP_RLE8:
+ return DecodeRLE8();
+ case BMP_RLE4:
+ return DecodeRLE4();
+ default:
+ return 0;
}
- bmp_error(bmp_ptr, "Any Uncontrol Error");
- return 0;
}
-bool validateColorIndex(uint8_t val, bmp_decompress_struct_p bmp_ptr) {
- if (val >= bmp_ptr->pal_num) {
- bmp_error(bmp_ptr, "A color index exceeds range determined by pal_num");
- return false;
+bool BMPDecompressor::ValidateColorIndex(uint8_t val) {
+ if (val >= pal_num) {
+ Error("A color index exceeds range determined by pal_num");
+ NOTREACHED();
}
return true;
}
-int32_t bmp_decode_rgb(bmp_decompress_struct_p bmp_ptr) {
+int32_t BMPDecompressor::DecodeRGB() {
uint8_t* des_buf = nullptr;
- while (bmp_ptr->row_num < bmp_ptr->height) {
- uint8_t* row_buf = bmp_ptr->out_row_buffer;
- if (!bmp_read_data(bmp_ptr, &des_buf, bmp_ptr->src_row_bytes))
+ while (row_num < height) {
+ uint8_t* row_buf = out_row_buffer;
+ if (!ReadData(&des_buf, src_row_bytes))
return 2;
- bmp_save_decoding_status(bmp_ptr, BMP_D_STATUS_DATA);
- switch (bmp_ptr->bitCounts) {
+ SaveDecodingStatus(BMP_D_STATUS_DATA);
+ switch (bitCounts) {
case 1: {
- for (int32_t col = 0; col < bmp_ptr->width; col++) {
+ for (int32_t col = 0; col < 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++) {
+ for (int32_t col = 0; col < width; ++col) {
*row_buf++ = (col & 0x01) ? (des_buf[col >> 1] & 0x0F)
: ((des_buf[col >> 1] & 0xF0) >> 4);
}
@@ -370,15 +380,12 @@ int32_t bmp_decode_rgb(bmp_decompress_struct_p bmp_ptr) {
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) {
+ if ((mask_blue >> i) & 0x01)
blue_bits++;
- }
- if ((bmp_ptr->mask_green >> i) & 0x01) {
+ if ((mask_green >> i) & 0x01)
green_bits++;
- }
- if ((bmp_ptr->mask_red >> i) & 0x01) {
+ if ((mask_red >> i) & 0x01)
red_bits++;
- }
}
green_bits += blue_bits;
red_bits += green_bits;
@@ -387,307 +394,281 @@ int32_t bmp_decode_rgb(bmp_decompress_struct_p bmp_ptr) {
blue_bits = 8 - blue_bits;
green_bits -= 8;
red_bits -= 8;
- for (int32_t col = 0; col < bmp_ptr->width; col++) {
+ for (int32_t col = 0; col < 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);
+ *row_buf++ = static_cast<uint8_t>((*buf & mask_blue) << blue_bits);
+ *row_buf++ = static_cast<uint8_t>((*buf & mask_green) >> green_bits);
+ *row_buf++ = static_cast<uint8_t>((*buf++ & mask_red) >> red_bits);
}
} break;
case 8:
case 24:
case 32:
- memcpy(bmp_ptr->out_row_buffer, des_buf, bmp_ptr->src_row_bytes);
- row_buf += bmp_ptr->src_row_bytes;
+ memcpy(out_row_buffer, des_buf, src_row_bytes);
+ row_buf += src_row_bytes;
break;
}
- for (uint8_t* buf = bmp_ptr->out_row_buffer; buf < row_buf; ++buf) {
- if (!validateColorIndex(*buf, bmp_ptr))
+ for (uint8_t* buf = out_row_buffer; buf < row_buf; ++buf) {
+ if (!ValidateColorIndex(*buf))
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);
+ ReadScanline(imgTB_flag ? row_num++ : (height - 1 - row_num++),
+ out_row_buffer);
}
- bmp_save_decoding_status(bmp_ptr, BMP_D_STATUS_TAIL);
+ SaveDecodingStatus(BMP_D_STATUS_TAIL);
return 1;
}
-int32_t bmp_decode_rle8(bmp_decompress_struct_p bmp_ptr) {
+
+int32_t BMPDecompressor::DecodeRLE8() {
uint8_t* first_byte_ptr = nullptr;
uint8_t* second_byte_ptr = nullptr;
- bmp_ptr->col_num = 0;
+ col_num = 0;
while (true) {
- uint32_t skip_size_org = bmp_ptr->skip_size;
- if (!bmp_read_data(bmp_ptr, &first_byte_ptr, 1))
+ uint32_t skip_size_org = skip_size;
+ if (!ReadData(&first_byte_ptr, 1))
return 2;
switch (*first_byte_ptr) {
case RLE_MARKER: {
- if (!bmp_read_data(bmp_ptr, &first_byte_ptr, 1)) {
- bmp_ptr->skip_size = skip_size_org;
+ if (!ReadData(&first_byte_ptr, 1)) {
+ 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;
+ if (row_num >= height) {
+ SaveDecodingStatus(BMP_D_STATUS_TAIL);
+ Error("The Bmp File Is Corrupt");
+ NOTREACHED();
}
- 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;
- memset(bmp_ptr->out_row_buffer, 0, bmp_ptr->out_row_bytes);
- bmp_save_decoding_status(bmp_ptr, BMP_D_STATUS_DATA);
+ ReadScanline(imgTB_flag ? row_num++ : (height - 1 - row_num++),
+ out_row_buffer);
+ col_num = 0;
+ memset(out_row_buffer, 0, out_row_bytes);
+ SaveDecodingStatus(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);
+ if (row_num < height) {
+ ReadScanline(imgTB_flag ? row_num++ : (height - 1 - row_num++),
+ out_row_buffer);
}
- bmp_save_decoding_status(bmp_ptr, BMP_D_STATUS_TAIL);
+ SaveDecodingStatus(BMP_D_STATUS_TAIL);
return 1;
}
case RLE_DELTA: {
uint8_t* delta_ptr;
- if (!bmp_read_data(bmp_ptr, &delta_ptr, 2)) {
- bmp_ptr->skip_size = skip_size_org;
+ if (!ReadData(&delta_ptr, 2)) {
+ 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;
+ col_num += (int32_t)delta_ptr[0];
+ int32_t bmp_row_num_next = row_num + (int32_t)delta_ptr[1];
+ if (col_num >= out_row_bytes || bmp_row_num_next >= height) {
+ Error("The Bmp File Is Corrupt Or Not Supported");
+ NOTREACHED();
}
- while (bmp_ptr->row_num < bmp_row_num_next) {
- 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);
+ while (row_num < bmp_row_num_next) {
+ memset(out_row_buffer, 0, out_row_bytes);
+ ReadScanline(imgTB_flag ? row_num++ : (height - 1 - row_num++),
+ out_row_buffer);
}
} break;
default: {
- int32_t avail_size = bmp_ptr->out_row_bytes - bmp_ptr->col_num;
+ int32_t avail_size = out_row_bytes - col_num;
if (!avail_size ||
static_cast<int32_t>(*first_byte_ptr) > avail_size) {
- bmp_error(bmp_ptr, "The Bmp File Is Corrupt");
- return 0;
+ Error("The Bmp File Is Corrupt");
+ NOTREACHED();
}
- if (!bmp_read_data(bmp_ptr, &second_byte_ptr,
- *first_byte_ptr & 1 ? *first_byte_ptr + 1
- : *first_byte_ptr)) {
- bmp_ptr->skip_size = skip_size_org;
+ if (!ReadData(&second_byte_ptr, *first_byte_ptr & 1
+ ? *first_byte_ptr + 1
+ : *first_byte_ptr)) {
+ skip_size = skip_size_org;
return 2;
}
- uint8_t* first_buf = bmp_ptr->out_row_buffer + bmp_ptr->col_num;
- memcpy(first_buf, second_byte_ptr, *first_byte_ptr);
+ uint8_t* first_buf = out_row_buffer + col_num;
+ memcpy(out_row_buffer + col_num, second_byte_ptr, *first_byte_ptr);
for (size_t i = 0; i < *first_byte_ptr; ++i) {
- if (!validateColorIndex(first_buf[i], bmp_ptr))
+ if (!ValidateColorIndex(first_buf[i]))
return 0;
}
- bmp_ptr->col_num += (int32_t)(*first_byte_ptr);
+ col_num += (int32_t)(*first_byte_ptr);
}
}
} break;
default: {
- int32_t avail_size = bmp_ptr->out_row_bytes - bmp_ptr->col_num;
+ int32_t avail_size = out_row_bytes - col_num;
if (!avail_size || static_cast<int32_t>(*first_byte_ptr) > avail_size) {
- bmp_error(bmp_ptr, "The Bmp File Is Corrupt");
- return 0;
+ Error("The Bmp File Is Corrupt");
+ NOTREACHED();
}
- if (!bmp_read_data(bmp_ptr, &second_byte_ptr, 1)) {
- bmp_ptr->skip_size = skip_size_org;
+ if (!ReadData(&second_byte_ptr, 1)) {
+ skip_size = skip_size_org;
return 2;
}
- uint8_t* first_buf = bmp_ptr->out_row_buffer + bmp_ptr->col_num;
- memset(first_buf, *second_byte_ptr, *first_byte_ptr);
+ uint8_t* first_buf = out_row_buffer + col_num;
+ memset(out_row_buffer + col_num, *second_byte_ptr, *first_byte_ptr);
for (size_t i = 0; i < *first_byte_ptr; ++i) {
- if (!validateColorIndex(first_buf[i], bmp_ptr))
+ if (!ValidateColorIndex(first_buf[i]))
return 0;
}
- bmp_ptr->col_num += (int32_t)(*first_byte_ptr);
+ col_num += (int32_t)(*first_byte_ptr);
}
}
}
- bmp_error(bmp_ptr, "Any Uncontrol Error");
- return 0;
+ Error("Any Uncontrol Error");
+ NOTREACHED();
}
-int32_t bmp_decode_rle4(bmp_decompress_struct_p bmp_ptr) {
+int32_t BMPDecompressor::DecodeRLE4() {
uint8_t* first_byte_ptr = nullptr;
uint8_t* second_byte_ptr = nullptr;
- bmp_ptr->col_num = 0;
+ col_num = 0;
while (true) {
- uint32_t skip_size_org = bmp_ptr->skip_size;
- if (!bmp_read_data(bmp_ptr, &first_byte_ptr, 1))
+ uint32_t skip_size_org = skip_size;
+ if (!ReadData(&first_byte_ptr, 1))
return 2;
switch (*first_byte_ptr) {
case RLE_MARKER: {
- if (!bmp_read_data(bmp_ptr, &first_byte_ptr, 1)) {
- bmp_ptr->skip_size = skip_size_org;
+ if (!ReadData(&first_byte_ptr, 1)) {
+ 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;
+ if (row_num >= height) {
+ SaveDecodingStatus(BMP_D_STATUS_TAIL);
+ Error("The Bmp File Is Corrupt");
+ NOTREACHED();
}
- 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;
- memset(bmp_ptr->out_row_buffer, 0, bmp_ptr->out_row_bytes);
- bmp_save_decoding_status(bmp_ptr, BMP_D_STATUS_DATA);
+ ReadScanline(imgTB_flag ? row_num++ : (height - 1 - row_num++),
+ out_row_buffer);
+ col_num = 0;
+ memset(out_row_buffer, 0, out_row_bytes);
+ SaveDecodingStatus(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);
+ if (row_num < height) {
+ ReadScanline(imgTB_flag ? row_num++ : (height - 1 - row_num++),
+ out_row_buffer);
}
- bmp_save_decoding_status(bmp_ptr, BMP_D_STATUS_TAIL);
+ SaveDecodingStatus(BMP_D_STATUS_TAIL);
return 1;
}
case RLE_DELTA: {
uint8_t* delta_ptr;
- if (!bmp_read_data(bmp_ptr, &delta_ptr, 2)) {
- bmp_ptr->skip_size = skip_size_org;
+ if (!ReadData(&delta_ptr, 2)) {
+ 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;
+ col_num += (int32_t)delta_ptr[0];
+ int32_t bmp_row_num_next = row_num + (int32_t)delta_ptr[1];
+ if (col_num >= out_row_bytes || bmp_row_num_next >= height) {
+ Error("The Bmp File Is Corrupt Or Not Supported");
+ NOTREACHED();
}
- while (bmp_ptr->row_num < bmp_row_num_next) {
- 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);
+ while (row_num < bmp_row_num_next) {
+ memset(out_row_buffer, 0, out_row_bytes);
+ ReadScanline(imgTB_flag ? row_num++ : (height - 1 - row_num++),
+ out_row_buffer);
}
} break;
default: {
- int32_t avail_size = bmp_ptr->out_row_bytes - bmp_ptr->col_num;
+ int32_t avail_size = out_row_bytes - col_num;
if (!avail_size) {
- bmp_error(bmp_ptr, "The Bmp File Is Corrupt");
- return 0;
+ Error("The Bmp File Is Corrupt");
+ NOTREACHED();
}
uint8_t size = HalfRoundUp(*first_byte_ptr);
if (static_cast<int32_t>(*first_byte_ptr) > avail_size) {
- if (size + (bmp_ptr->col_num >> 1) > bmp_ptr->src_row_bytes) {
- bmp_error(bmp_ptr, "The Bmp File Is Corrupt");
- return 0;
+ if (size + (col_num >> 1) > src_row_bytes) {
+ Error("The Bmp File Is Corrupt");
+ NOTREACHED();
}
*first_byte_ptr = avail_size - 1;
}
- if (!bmp_read_data(bmp_ptr, &second_byte_ptr,
- size & 1 ? size + 1 : size)) {
- bmp_ptr->skip_size = skip_size_org;
+ if (!ReadData(&second_byte_ptr, size & 1 ? size + 1 : size)) {
+ skip_size = skip_size_org;
return 2;
}
for (uint8_t i = 0; i < *first_byte_ptr; i++) {
uint8_t color = (i & 0x01) ? (*second_byte_ptr++ & 0x0F)
: (*second_byte_ptr & 0xF0) >> 4;
- if (!validateColorIndex(color, bmp_ptr))
+ if (!ValidateColorIndex(color))
return 0;
- *(bmp_ptr->out_row_buffer + bmp_ptr->col_num++) = color;
+ *(out_row_buffer + col_num++) = color;
}
}
}
} break;
default: {
- int32_t avail_size = bmp_ptr->out_row_bytes - bmp_ptr->col_num;
+ int32_t avail_size = out_row_bytes - col_num;
if (!avail_size) {
- bmp_error(bmp_ptr, "The Bmp File Is Corrupt");
- return 0;
+ Error("The Bmp File Is Corrupt");
+ NOTREACHED();
}
if (static_cast<int32_t>(*first_byte_ptr) > avail_size) {
uint8_t size = HalfRoundUp(*first_byte_ptr);
- if (size + (bmp_ptr->col_num >> 1) > bmp_ptr->src_row_bytes) {
- bmp_error(bmp_ptr, "The Bmp File Is Corrupt");
- return 0;
+ if (size + (col_num >> 1) > src_row_bytes) {
+ Error("The Bmp File Is Corrupt");
+ NOTREACHED();
}
*first_byte_ptr = avail_size - 1;
}
- if (!bmp_read_data(bmp_ptr, &second_byte_ptr, 1)) {
- bmp_ptr->skip_size = skip_size_org;
+ if (!ReadData(&second_byte_ptr, 1)) {
+ skip_size = skip_size_org;
return 2;
}
for (uint8_t i = 0; i < *first_byte_ptr; i++) {
uint8_t second_byte = *second_byte_ptr;
second_byte =
i & 0x01 ? (second_byte & 0x0F) : (second_byte & 0xF0) >> 4;
- if (!validateColorIndex(second_byte, bmp_ptr))
+ if (!ValidateColorIndex(second_byte))
return 0;
-
- *(bmp_ptr->out_row_buffer + bmp_ptr->col_num++) = second_byte;
+ *(out_row_buffer + col_num++) = second_byte;
}
}
}
}
- bmp_error(bmp_ptr, "Any Uncontrol Error");
- return 0;
+ Error("Any Uncontrol Error");
+ NOTREACHED();
}
-uint8_t* bmp_read_data(bmp_decompress_struct_p bmp_ptr,
- uint8_t** des_buf_pp,
- uint32_t data_size) {
- if (!bmp_ptr || bmp_ptr->avail_in < bmp_ptr->skip_size + data_size)
+uint8_t* BMPDecompressor::ReadData(uint8_t** des_buf, uint32_t data_size) {
+ if (avail_in < skip_size + data_size)
return nullptr;
- *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,
- uint32_t src_size) {
- bmp_ptr->next_in = src_buf;
- bmp_ptr->avail_in = src_size;
- bmp_ptr->skip_size = 0;
-}
-uint32_t bmp_get_avail_input(bmp_decompress_struct_p bmp_ptr,
- uint8_t** avail_buf_ptr) {
- if (avail_buf_ptr) {
- *avail_buf_ptr = nullptr;
- if (bmp_ptr->avail_in > 0) {
- *avail_buf_ptr = bmp_ptr->next_in;
- }
+ *des_buf = next_in + skip_size;
+ skip_size += data_size;
+ return *des_buf;
+}
+
+void BMPDecompressor::SaveDecodingStatus(int32_t status) {
+ decode_status = status;
+ next_in += skip_size;
+ avail_in -= skip_size;
+ skip_size = 0;
+}
+
+void BMPDecompressor::SetInputBuffer(uint8_t* src_buf, uint32_t src_size) {
+ next_in = src_buf;
+ avail_in = src_size;
+ skip_size = 0;
+}
+
+uint32_t BMPDecompressor::GetAvailInput(uint8_t** avail_buf) {
+ if (avail_buf) {
+ *avail_buf = nullptr;
+ if (avail_in > 0)
+ *avail_buf = next_in;
}
- return bmp_ptr->avail_in;
+ return avail_in;
}
+
bmp_compress_struct_p bmp_create_compress() {
bmp_compress_struct_p bmp_ptr;
bmp_ptr = FX_Alloc(bmp_compress_struct, 1);
diff --git a/core/fxcodec/lbmp/fx_bmp.h b/core/fxcodec/lbmp/fx_bmp.h
index 5d1f799fd1..b16aecb02b 100644
--- a/core/fxcodec/lbmp/fx_bmp.h
+++ b/core/fxcodec/lbmp/fx_bmp.h
@@ -9,6 +9,7 @@
#include <setjmp.h>
+#include "core/fxcodec/codec/ccodec_bmpmodule.h"
#include "core/fxcrt/fx_basic.h"
#define BMP_WIDTHBYTES(width, bitCount) ((width * bitCount) + 31) / 32 * 4
@@ -65,13 +66,16 @@ typedef struct tagBmpInfoHeader {
} 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 {
+class BMPDecompressor {
+ public:
+ void Error(const char* err_msg);
+ int32_t DecodeImage();
+ int32_t ReadHeader();
+ void SetInputBuffer(uint8_t* src_buf, uint32_t src_size);
+ uint32_t GetAvailInput(uint8_t** avail_buf);
+
jmp_buf jmpbuf;
char* err_ptr;
- void (*bmp_error_fn)(bmp_decompress_struct_p gif_ptr, const char* err_msg);
void* context_ptr;
@@ -101,33 +105,39 @@ struct tag_bmp_decompress_struct {
uint32_t mask_green;
uint32_t mask_blue;
- bool (*bmp_get_data_position_fn)(bmp_decompress_struct_p bmp_ptr,
- uint32_t 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;
uint32_t avail_in;
uint32_t skip_size;
int32_t decode_status;
+
+ private:
+ bool GetDataPosition(uint32_t cur_pos);
+ void ReadScanline(int32_t row_num, uint8_t* row_buf);
+ int32_t DecodeRGB();
+ int32_t DecodeRLE8();
+ int32_t DecodeRLE4();
+ uint8_t* ReadData(uint8_t** des_buf, uint32_t data_size);
+ void SaveDecodingStatus(int32_t status);
+ bool ValidateColorIndex(uint8_t val);
+ bool ValidateFlag() const;
};
-void bmp_error(bmp_decompress_struct_p bmp_ptr, const 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,
- uint32_t 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,
- uint32_t src_size);
-uint32_t bmp_get_avail_input(bmp_decompress_struct_p bmp_ptr,
- uint8_t** avail_buf_ptr);
+
+BMPDecompressor* bmp_create_decompress();
+void bmp_destroy_decompress(BMPDecompressor** bmp_ptr_ptr);
+
+class CBmpContext : public CCodec_BmpModule::Context {
+ public:
+ CBmpContext(BMPDecompressor* pBmp,
+ CCodec_BmpModule* pModule,
+ CCodec_BmpModule::Delegate* pDelegate);
+ ~CBmpContext() override;
+
+ BMPDecompressor* m_pBmp;
+ CFX_UnownedPtr<CCodec_BmpModule> const m_pModule;
+ CFX_UnownedPtr<CCodec_BmpModule::Delegate> const m_pDelegate;
+ char m_szLastError[256];
+};
+
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;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-09 03:23:00 +0000