diff options
Diffstat (limited to 'core/fxcodec/lbmp/fx_bmp.cpp')
| -rw-r--r-- | core/fxcodec/lbmp/fx_bmp.cpp | 442 |
1 files changed, 223 insertions, 219 deletions
diff --git a/core/fxcodec/lbmp/fx_bmp.cpp b/core/fxcodec/lbmp/fx_bmp.cpp index 73be66e256..5e02c46ef8 100644 --- a/core/fxcodec/lbmp/fx_bmp.cpp +++ b/core/fxcodec/lbmp/fx_bmp.cpp @@ -29,54 +29,54 @@ uint8_t HalfRoundUp(uint8_t value) { } // namespace BMPDecompressor::BMPDecompressor() - : context_ptr(nullptr), - next_in(nullptr), - header_offset(0), - width(0), - height(0), - compress_flag(0), - components(0), - src_row_bytes(0), - out_row_bytes(0), - bitCounts(0), - color_used(0), - imgTB_flag(false), - pal_num(0), - pal_type(0), - data_size(0), - img_data_offset(0), - img_ifh_size(0), - row_num(0), - col_num(0), - dpi_x(0), - dpi_y(0), - mask_red(0), - mask_green(0), - mask_blue(0), - avail_in(0), - skip_size(0), - decode_status(BMP_D_STATUS_HEADER) {} + : context_ptr_(nullptr), + next_in_(nullptr), + header_offset_(0), + width_(0), + height_(0), + compress_flag_(0), + components_(0), + src_row_bytes_(0), + out_row_bytes_(0), + bit_counts_(0), + color_used_(0), + imgTB_flag_(false), + pal_num_(0), + pal_type_(0), + data_size_(0), + img_data_offset_(0), + img_ifh_size_(0), + row_num_(0), + col_num_(0), + dpi_x_(0), + dpi_y_(0), + mask_red_(0), + mask_green_(0), + mask_blue_(0), + avail_in_(0), + skip_size_(0), + decode_status_(BMP_D_STATUS_HEADER) {} BMPDecompressor::~BMPDecompressor() {} void BMPDecompressor::Error() { - longjmp(jmpbuf, 1); + longjmp(jmpbuf_, 1); } -void BMPDecompressor::ReadScanline(uint32_t row_num, +void BMPDecompressor::ReadScanline(uint32_t row_num_, const std::vector<uint8_t>& row_buf) { - auto* p = reinterpret_cast<CBmpContext*>(context_ptr); - p->m_pDelegate->BmpReadScanline(row_num, 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); + 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) { + uint32_t skip_size_org = skip_size_; + if (decode_status_ == BMP_D_STATUS_HEADER) { BmpFileHeader* pBmp_header = nullptr; if (!ReadData(reinterpret_cast<uint8_t**>(&pBmp_header), sizeof(BmpFileHeader))) { @@ -87,109 +87,109 @@ int32_t BMPDecompressor::ReadHeader() { FXWORD_GET_LSBFIRST(reinterpret_cast<uint8_t*>(&pBmp_header->bfType)); pBmp_header->bfOffBits = FXDWORD_GET_LSBFIRST( reinterpret_cast<uint8_t*>(&pBmp_header->bfOffBits)); - data_size = + data_size_ = FXDWORD_GET_LSBFIRST(reinterpret_cast<uint8_t*>(&pBmp_header->bfSize)); if (pBmp_header->bfType != BMP_SIGNATURE) { Error(); NOTREACHED(); } - if (avail_in < sizeof(uint32_t)) { - skip_size = skip_size_org; + if (avail_in_ < sizeof(uint32_t)) { + skip_size_ = skip_size_org; return 2; } - img_ifh_size = - FXDWORD_GET_LSBFIRST(static_cast<uint8_t*>(next_in + skip_size)); - pal_type = 0; + img_ifh_size_ = + FXDWORD_GET_LSBFIRST(static_cast<uint8_t*>(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 (img_ifh_size) { + switch (img_ifh_size_) { case kBmpCoreHeaderSize: { - pal_type = 1; + pal_type_ = 1; BmpCoreHeader* pBmp_core_header = nullptr; if (!ReadData(reinterpret_cast<uint8_t**>(&pBmp_core_header), - img_ifh_size)) { - skip_size = skip_size_org; + img_ifh_size_)) { + skip_size_ = skip_size_org; return 2; } - width = FXWORD_GET_LSBFIRST( + width_ = FXWORD_GET_LSBFIRST( reinterpret_cast<uint8_t*>(&pBmp_core_header->bcWidth)); - height = FXWORD_GET_LSBFIRST( + height_ = FXWORD_GET_LSBFIRST( reinterpret_cast<uint8_t*>(&pBmp_core_header->bcHeight)); - bitCounts = FXWORD_GET_LSBFIRST( + bit_counts_ = FXWORD_GET_LSBFIRST( reinterpret_cast<uint8_t*>(&pBmp_core_header->bcBitCount)); - compress_flag = BMP_RGB; - imgTB_flag = false; + compress_flag_ = BMP_RGB; + imgTB_flag_ = false; } break; case kBmpInfoHeaderSize: { BmpInfoHeader* pBmp_info_header = nullptr; if (!ReadData(reinterpret_cast<uint8_t**>(&pBmp_info_header), - img_ifh_size)) { - skip_size = skip_size_org; + img_ifh_size_)) { + skip_size_ = skip_size_org; return 2; } - width = FXDWORD_GET_LSBFIRST( + width_ = FXDWORD_GET_LSBFIRST( reinterpret_cast<uint8_t*>(&pBmp_info_header->biWidth)); int32_t signed_height = FXDWORD_GET_LSBFIRST( reinterpret_cast<uint8_t*>(&pBmp_info_header->biHeight)); - bitCounts = FXWORD_GET_LSBFIRST( + bit_counts_ = FXWORD_GET_LSBFIRST( reinterpret_cast<uint8_t*>(&pBmp_info_header->biBitCount)); - compress_flag = FXDWORD_GET_LSBFIRST( + compress_flag_ = FXDWORD_GET_LSBFIRST( reinterpret_cast<uint8_t*>(&pBmp_info_header->biCompression)); - color_used = FXDWORD_GET_LSBFIRST( + color_used_ = FXDWORD_GET_LSBFIRST( reinterpret_cast<uint8_t*>(&pBmp_info_header->biClrUsed)); - dpi_x = static_cast<int32_t>(FXDWORD_GET_LSBFIRST( + dpi_x_ = static_cast<int32_t>(FXDWORD_GET_LSBFIRST( reinterpret_cast<uint8_t*>(&pBmp_info_header->biXPelsPerMeter))); - dpi_y = static_cast<int32_t>(FXDWORD_GET_LSBFIRST( + dpi_y_ = static_cast<int32_t>(FXDWORD_GET_LSBFIRST( reinterpret_cast<uint8_t*>(&pBmp_info_header->biYPelsPerMeter))); SetHeight(signed_height); } break; default: { - if (img_ifh_size > + if (img_ifh_size_ > std::min(kBmpInfoHeaderSize, sizeof(BmpInfoHeader))) { BmpInfoHeader* pBmp_info_header = nullptr; if (!ReadData(reinterpret_cast<uint8_t**>(&pBmp_info_header), - img_ifh_size)) { - skip_size = skip_size_org; + img_ifh_size_)) { + skip_size_ = skip_size_org; return 2; } uint16_t biPlanes; - width = FXDWORD_GET_LSBFIRST( + width_ = FXDWORD_GET_LSBFIRST( reinterpret_cast<uint8_t*>(&pBmp_info_header->biWidth)); int32_t signed_height = FXDWORD_GET_LSBFIRST( reinterpret_cast<uint8_t*>(&pBmp_info_header->biHeight)); - bitCounts = FXWORD_GET_LSBFIRST( + bit_counts_ = FXWORD_GET_LSBFIRST( reinterpret_cast<uint8_t*>(&pBmp_info_header->biBitCount)); - compress_flag = FXDWORD_GET_LSBFIRST( + compress_flag_ = FXDWORD_GET_LSBFIRST( reinterpret_cast<uint8_t*>(&pBmp_info_header->biCompression)); - color_used = FXDWORD_GET_LSBFIRST( + color_used_ = FXDWORD_GET_LSBFIRST( reinterpret_cast<uint8_t*>(&pBmp_info_header->biClrUsed)); biPlanes = FXWORD_GET_LSBFIRST( reinterpret_cast<uint8_t*>(&pBmp_info_header->biPlanes)); - dpi_x = FXDWORD_GET_LSBFIRST( + dpi_x_ = FXDWORD_GET_LSBFIRST( reinterpret_cast<uint8_t*>(&pBmp_info_header->biXPelsPerMeter)); - dpi_y = FXDWORD_GET_LSBFIRST( + dpi_y_ = FXDWORD_GET_LSBFIRST( reinterpret_cast<uint8_t*>(&pBmp_info_header->biYPelsPerMeter)); SetHeight(signed_height); - if (compress_flag == BMP_RGB && biPlanes == 1 && color_used == 0) + if (compress_flag_ == BMP_RGB && biPlanes == 1 && color_used_ == 0) break; } Error(); NOTREACHED(); } } - if (width > BMP_MAX_WIDTH || compress_flag > BMP_BITFIELDS) { + if (width_ > BMP_MAX_WIDTH || compress_flag_ > BMP_BITFIELDS) { Error(); NOTREACHED(); } - switch (bitCounts) { + switch (bit_counts_) { case 1: case 4: case 8: case 16: case 24: { - if (color_used > 1U << bitCounts) { + if (color_used_ > 1U << bit_counts_) { Error(); NOTREACHED(); } @@ -200,99 +200,99 @@ int32_t BMPDecompressor::ReadHeader() { Error(); NOTREACHED(); } - src_row_bytes = BMP_WIDTHBYTES(width, bitCounts); - switch (bitCounts) { + src_row_bytes_ = BMP_WIDTHBYTES(width_, bit_counts_); + switch (bit_counts_) { case 1: case 4: case 8: - out_row_bytes = BMP_WIDTHBYTES(width, 8); - components = 1; + out_row_bytes_ = BMP_WIDTHBYTES(width_, 8); + components_ = 1; break; case 16: case 24: - out_row_bytes = BMP_WIDTHBYTES(width, 24); - components = 3; + out_row_bytes_ = BMP_WIDTHBYTES(width_, 24); + components_ = 3; break; case 32: - out_row_bytes = src_row_bytes; - components = 4; + out_row_bytes_ = src_row_bytes_; + components_ = 4; break; } - out_row_buffer.clear(); + out_row_buffer_.clear(); - if (out_row_bytes <= 0) { + if (out_row_bytes_ <= 0) { Error(); NOTREACHED(); } - out_row_buffer.resize(out_row_bytes); + out_row_buffer_.resize(out_row_bytes_); SaveDecodingStatus(BMP_D_STATUS_PAL); } - if (decode_status == BMP_D_STATUS_PAL) { - skip_size_org = skip_size; - if (compress_flag == BMP_BITFIELDS) { - if (bitCounts != 16 && bitCounts != 32) { + if (decode_status_ == BMP_D_STATUS_PAL) { + skip_size_org = skip_size_; + if (compress_flag_ == BMP_BITFIELDS) { + if (bit_counts_ != 16 && bit_counts_ != 32) { Error(); NOTREACHED(); } uint32_t* mask; if (ReadData(reinterpret_cast<uint8_t**>(&mask), 3 * sizeof(uint32_t)) == nullptr) { - skip_size = skip_size_org; + skip_size_ = skip_size_org; return 2; } - mask_red = FXDWORD_GET_LSBFIRST(reinterpret_cast<uint8_t*>(&mask[0])); - mask_green = FXDWORD_GET_LSBFIRST(reinterpret_cast<uint8_t*>(&mask[1])); - mask_blue = FXDWORD_GET_LSBFIRST(reinterpret_cast<uint8_t*>(&mask[2])); - if (mask_red & mask_green || mask_red & mask_blue || - mask_green & mask_blue) { + mask_red_ = FXDWORD_GET_LSBFIRST(reinterpret_cast<uint8_t*>(&mask[0])); + mask_green_ = FXDWORD_GET_LSBFIRST(reinterpret_cast<uint8_t*>(&mask[1])); + mask_blue_ = FXDWORD_GET_LSBFIRST(reinterpret_cast<uint8_t*>(&mask[2])); + if (mask_red_ & mask_green_ || mask_red_ & mask_blue_ || + mask_green_ & mask_blue_) { Error(); NOTREACHED(); } - header_offset = std::max(header_offset, 26 + img_ifh_size); + header_offset_ = std::max(header_offset_, 26 + img_ifh_size_); SaveDecodingStatus(BMP_D_STATUS_DATA_PRE); return 1; - } else if (bitCounts == 16) { - mask_red = 0x7C00; - mask_green = 0x03E0; - mask_blue = 0x001F; + } else if (bit_counts_ == 16) { + mask_red_ = 0x7C00; + mask_green_ = 0x03E0; + mask_blue_ = 0x001F; } - pal_num = 0; - if (bitCounts < 16) { - pal_num = 1 << bitCounts; - if (color_used != 0) - pal_num = color_used; + pal_num_ = 0; + if (bit_counts_ < 16) { + pal_num_ = 1 << bit_counts_; + if (color_used_ != 0) + pal_num_ = color_used_; uint8_t* src_pal_ptr = nullptr; - uint32_t src_pal_size = pal_num * (pal_type ? 3 : 4); + uint32_t src_pal_size = pal_num_ * (pal_type_ ? 3 : 4); if (ReadData(&src_pal_ptr, src_pal_size) == nullptr) { - skip_size = skip_size_org; + skip_size_ = skip_size_org; return 2; } - palette.resize(pal_num); + palette_.resize(pal_num_); int32_t src_pal_index = 0; - if (pal_type == BMP_PAL_OLD) { - while (src_pal_index < pal_num) { - palette[src_pal_index++] = BMP_PAL_ENCODE( + if (pal_type_ == BMP_PAL_OLD) { + while (src_pal_index < pal_num_) { + palette_[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 < pal_num) { - palette[src_pal_index++] = BMP_PAL_ENCODE( + while (src_pal_index < pal_num_) { + palette_[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; } } } - header_offset = std::max(header_offset, - 14 + img_ifh_size + pal_num * (pal_type ? 3 : 4)); + header_offset_ = std::max( + header_offset_, 14 + img_ifh_size_ + pal_num_ * (pal_type_ ? 3 : 4)); SaveDecodingStatus(BMP_D_STATUS_DATA_PRE); } return 1; } bool BMPDecompressor::ValidateFlag() const { - switch (compress_flag) { + switch (compress_flag_) { case BMP_RGB: case BMP_BITFIELDS: case BMP_RLE8: @@ -304,21 +304,21 @@ bool BMPDecompressor::ValidateFlag() const { } int32_t BMPDecompressor::DecodeImage() { - if (decode_status == BMP_D_STATUS_DATA_PRE) { - avail_in = 0; - if (!GetDataPosition(header_offset)) { - decode_status = BMP_D_STATUS_TAIL; + if (decode_status_ == BMP_D_STATUS_DATA_PRE) { + avail_in_ = 0; + if (!GetDataPosition(header_offset_)) { + decode_status_ = BMP_D_STATUS_TAIL; Error(); NOTREACHED(); } - row_num = 0; + row_num_ = 0; SaveDecodingStatus(BMP_D_STATUS_DATA); } - if (decode_status != BMP_D_STATUS_DATA || !ValidateFlag()) { + if (decode_status_ != BMP_D_STATUS_DATA || !ValidateFlag()) { Error(); NOTREACHED(); } - switch (compress_flag) { + switch (compress_flag_) { case BMP_RGB: case BMP_BITFIELDS: return DecodeRGB(); @@ -332,7 +332,7 @@ int32_t BMPDecompressor::DecodeImage() { } bool BMPDecompressor::ValidateColorIndex(uint8_t val) { - if (val >= pal_num) { + if (val >= pal_num_) { Error(); NOTREACHED(); } @@ -341,23 +341,23 @@ bool BMPDecompressor::ValidateColorIndex(uint8_t val) { int32_t BMPDecompressor::DecodeRGB() { uint8_t* des_buf = nullptr; - while (row_num < height) { + while (row_num_ < height_) { size_t idx = 0; - if (!ReadData(&des_buf, src_row_bytes)) + if (!ReadData(&des_buf, src_row_bytes_)) return 2; SaveDecodingStatus(BMP_D_STATUS_DATA); - switch (bitCounts) { + switch (bit_counts_) { case 1: { - for (uint32_t col = 0; col < width; ++col) - out_row_buffer[idx++] = + for (uint32_t col = 0; col < width_; ++col) + out_row_buffer_[idx++] = des_buf[col >> 3] & (0x80 >> (col % 8)) ? 0x01 : 0x00; } break; case 4: { - for (uint32_t col = 0; col < width; ++col) { - out_row_buffer[idx++] = (col & 0x01) - ? (des_buf[col >> 1] & 0x0F) - : ((des_buf[col >> 1] & 0xF0) >> 4); + for (uint32_t col = 0; col < width_; ++col) { + out_row_buffer_[idx++] = (col & 0x01) + ? (des_buf[col >> 1] & 0x0F) + : ((des_buf[col >> 1] & 0xF0) >> 4); } } break; case 16: { @@ -366,11 +366,11 @@ int32_t BMPDecompressor::DecodeRGB() { uint8_t green_bits = 0; uint8_t red_bits = 0; for (int32_t i = 0; i < 16; i++) { - if ((mask_blue >> i) & 0x01) + if ((mask_blue_ >> i) & 0x01) blue_bits++; - if ((mask_green >> i) & 0x01) + if ((mask_green_ >> i) & 0x01) green_bits++; - if ((mask_red >> i) & 0x01) + if ((mask_red_ >> i) & 0x01) red_bits++; } green_bits += blue_bits; @@ -380,29 +380,29 @@ int32_t BMPDecompressor::DecodeRGB() { blue_bits = 8 - blue_bits; green_bits -= 8; red_bits -= 8; - for (uint32_t col = 0; col < width; ++col) { + for (uint32_t col = 0; col < width_; ++col) { *buf = FXWORD_GET_LSBFIRST(reinterpret_cast<uint8_t*>(buf)); - out_row_buffer[idx++] = - static_cast<uint8_t>((*buf & mask_blue) << blue_bits); - out_row_buffer[idx++] = - static_cast<uint8_t>((*buf & mask_green) >> green_bits); - out_row_buffer[idx++] = - static_cast<uint8_t>((*buf++ & mask_red) >> red_bits); + out_row_buffer_[idx++] = + static_cast<uint8_t>((*buf & mask_blue_) << blue_bits); + out_row_buffer_[idx++] = + static_cast<uint8_t>((*buf & mask_green_) >> green_bits); + out_row_buffer_[idx++] = + static_cast<uint8_t>((*buf++ & mask_red_) >> red_bits); } } break; case 8: case 24: case 32: - std::copy(des_buf, des_buf + src_row_bytes, out_row_buffer.begin()); - idx += src_row_bytes; + std::copy(des_buf, des_buf + src_row_bytes_, out_row_buffer_.begin()); + idx += src_row_bytes_; break; } - for (uint8_t byte : out_row_buffer) { + for (uint8_t byte : out_row_buffer_) { if (!ValidateColorIndex(byte)) return 0; } - ReadScanline(imgTB_flag ? row_num++ : (height - 1 - row_num++), - out_row_buffer); + ReadScanline(imgTB_flag_ ? row_num_++ : (height_ - 1 - row_num_++), + out_row_buffer_); } SaveDecodingStatus(BMP_D_STATUS_TAIL); return 1; @@ -411,36 +411,37 @@ int32_t BMPDecompressor::DecodeRGB() { int32_t BMPDecompressor::DecodeRLE8() { uint8_t* first_byte_ptr = nullptr; uint8_t* second_byte_ptr = nullptr; - col_num = 0; + col_num_ = 0; while (true) { - uint32_t skip_size_org = skip_size; + uint32_t skip_size_org = skip_size_; if (!ReadData(&first_byte_ptr, 1)) return 2; switch (*first_byte_ptr) { case RLE_MARKER: { if (!ReadData(&first_byte_ptr, 1)) { - skip_size = skip_size_org; + skip_size_ = skip_size_org; return 2; } switch (*first_byte_ptr) { case RLE_EOL: { - if (row_num >= height) { + if (row_num_ >= height_) { SaveDecodingStatus(BMP_D_STATUS_TAIL); Error(); NOTREACHED(); } - ReadScanline(imgTB_flag ? row_num++ : (height - 1 - row_num++), - out_row_buffer); - col_num = 0; - std::fill(out_row_buffer.begin(), out_row_buffer.end(), 0); + ReadScanline(imgTB_flag_ ? row_num_++ : (height_ - 1 - row_num_++), + out_row_buffer_); + col_num_ = 0; + std::fill(out_row_buffer_.begin(), out_row_buffer_.end(), 0); SaveDecodingStatus(BMP_D_STATUS_DATA); continue; } case RLE_EOI: { - if (row_num < height) { - ReadScanline(imgTB_flag ? row_num++ : (height - 1 - row_num++), - out_row_buffer); + if (row_num_ < height_) { + ReadScanline( + imgTB_flag_ ? row_num_++ : (height_ - 1 - row_num_++), + out_row_buffer_); } SaveDecodingStatus(BMP_D_STATUS_TAIL); return 1; @@ -448,23 +449,24 @@ int32_t BMPDecompressor::DecodeRLE8() { case RLE_DELTA: { uint8_t* delta_ptr; if (!ReadData(&delta_ptr, 2)) { - skip_size = skip_size_org; + skip_size_ = skip_size_org; return 2; } - col_num += delta_ptr[0]; - size_t bmp_row_num_next = row_num + delta_ptr[1]; - if (col_num >= out_row_bytes || bmp_row_num_next >= height) { + col_num_ += delta_ptr[0]; + size_t bmp_row_num__next = row_num_ + delta_ptr[1]; + if (col_num_ >= out_row_bytes_ || bmp_row_num__next >= height_) { Error(); NOTREACHED(); } - while (row_num < bmp_row_num_next) { - std::fill(out_row_buffer.begin(), out_row_buffer.end(), 0); - ReadScanline(imgTB_flag ? row_num++ : (height - 1 - row_num++), - out_row_buffer); + while (row_num_ < bmp_row_num__next) { + std::fill(out_row_buffer_.begin(), out_row_buffer_.end(), 0); + ReadScanline( + imgTB_flag_ ? row_num_++ : (height_ - 1 - row_num_++), + out_row_buffer_); } } break; default: { - int32_t avail_size = out_row_bytes - col_num; + int32_t avail_size = out_row_bytes_ - col_num_; if (!avail_size || static_cast<int32_t>(*first_byte_ptr) > avail_size) { Error(); @@ -473,35 +475,35 @@ int32_t BMPDecompressor::DecodeRLE8() { if (!ReadData(&second_byte_ptr, *first_byte_ptr & 1 ? *first_byte_ptr + 1 : *first_byte_ptr)) { - skip_size = skip_size_org; + skip_size_ = skip_size_org; return 2; } std::copy(second_byte_ptr, second_byte_ptr + *first_byte_ptr, - out_row_buffer.begin() + col_num); - for (size_t i = col_num; i < col_num + *first_byte_ptr; ++i) { - if (!ValidateColorIndex(out_row_buffer[i])) + out_row_buffer_.begin() + col_num_); + for (size_t i = col_num_; i < col_num_ + *first_byte_ptr; ++i) { + if (!ValidateColorIndex(out_row_buffer_[i])) return 0; } - col_num += *first_byte_ptr; + col_num_ += *first_byte_ptr; } } } break; default: { - int32_t avail_size = out_row_bytes - col_num; + int32_t avail_size = out_row_bytes_ - col_num_; if (!avail_size || static_cast<int32_t>(*first_byte_ptr) > avail_size) { Error(); NOTREACHED(); } if (!ReadData(&second_byte_ptr, 1)) { - skip_size = skip_size_org; + skip_size_ = skip_size_org; return 2; } - std::fill(out_row_buffer.begin() + col_num, - out_row_buffer.begin() + col_num + *first_byte_ptr, + std::fill(out_row_buffer_.begin() + col_num_, + out_row_buffer_.begin() + col_num_ + *first_byte_ptr, *second_byte_ptr); - if (!ValidateColorIndex(out_row_buffer[col_num])) + if (!ValidateColorIndex(out_row_buffer_[col_num_])) return 0; - col_num += *first_byte_ptr; + col_num_ += *first_byte_ptr; } } } @@ -512,36 +514,37 @@ int32_t BMPDecompressor::DecodeRLE8() { int32_t BMPDecompressor::DecodeRLE4() { uint8_t* first_byte_ptr = nullptr; uint8_t* second_byte_ptr = nullptr; - col_num = 0; + col_num_ = 0; while (true) { - uint32_t skip_size_org = skip_size; + uint32_t skip_size_org = skip_size_; if (!ReadData(&first_byte_ptr, 1)) return 2; switch (*first_byte_ptr) { case RLE_MARKER: { if (!ReadData(&first_byte_ptr, 1)) { - skip_size = skip_size_org; + skip_size_ = skip_size_org; return 2; } switch (*first_byte_ptr) { case RLE_EOL: { - if (row_num >= height) { + if (row_num_ >= height_) { SaveDecodingStatus(BMP_D_STATUS_TAIL); Error(); NOTREACHED(); } - ReadScanline(imgTB_flag ? row_num++ : (height - 1 - row_num++), - out_row_buffer); - col_num = 0; - std::fill(out_row_buffer.begin(), out_row_buffer.end(), 0); + ReadScanline(imgTB_flag_ ? row_num_++ : (height_ - 1 - row_num_++), + out_row_buffer_); + col_num_ = 0; + std::fill(out_row_buffer_.begin(), out_row_buffer_.end(), 0); SaveDecodingStatus(BMP_D_STATUS_DATA); continue; } case RLE_EOI: { - if (row_num < height) { - ReadScanline(imgTB_flag ? row_num++ : (height - 1 - row_num++), - out_row_buffer); + if (row_num_ < height_) { + ReadScanline( + imgTB_flag_ ? row_num_++ : (height_ - 1 - row_num_++), + out_row_buffer_); } SaveDecodingStatus(BMP_D_STATUS_TAIL); return 1; @@ -549,37 +552,38 @@ int32_t BMPDecompressor::DecodeRLE4() { case RLE_DELTA: { uint8_t* delta_ptr; if (!ReadData(&delta_ptr, 2)) { - skip_size = skip_size_org; + skip_size_ = skip_size_org; return 2; } - col_num += delta_ptr[0]; - size_t bmp_row_num_next = row_num + delta_ptr[1]; - if (col_num >= out_row_bytes || bmp_row_num_next >= height) { + col_num_ += delta_ptr[0]; + size_t bmp_row_num__next = row_num_ + delta_ptr[1]; + if (col_num_ >= out_row_bytes_ || bmp_row_num__next >= height_) { Error(); NOTREACHED(); } - while (row_num < bmp_row_num_next) { - std::fill(out_row_buffer.begin(), out_row_buffer.end(), 0); - ReadScanline(imgTB_flag ? row_num++ : (height - 1 - row_num++), - out_row_buffer); + while (row_num_ < bmp_row_num__next) { + std::fill(out_row_buffer_.begin(), out_row_buffer_.end(), 0); + ReadScanline( + imgTB_flag_ ? row_num_++ : (height_ - 1 - row_num_++), + out_row_buffer_); } } break; default: { - int32_t avail_size = out_row_bytes - col_num; + int32_t avail_size = out_row_bytes_ - col_num_; if (!avail_size) { Error(); NOTREACHED(); } uint8_t size = HalfRoundUp(*first_byte_ptr); if (static_cast<int32_t>(*first_byte_ptr) > avail_size) { - if (size + (col_num >> 1) > src_row_bytes) { + if (size + (col_num_ >> 1) > src_row_bytes_) { Error(); NOTREACHED(); } *first_byte_ptr = avail_size - 1; } if (!ReadData(&second_byte_ptr, size & 1 ? size + 1 : size)) { - skip_size = skip_size_org; + skip_size_ = skip_size_org; return 2; } for (uint8_t i = 0; i < *first_byte_ptr; i++) { @@ -588,27 +592,27 @@ int32_t BMPDecompressor::DecodeRLE4() { if (!ValidateColorIndex(color)) return 0; - out_row_buffer[col_num++] = color; + out_row_buffer_[col_num_++] = color; } } } } break; default: { - int32_t avail_size = out_row_bytes - col_num; + int32_t avail_size = out_row_bytes_ - col_num_; if (!avail_size) { Error(); NOTREACHED(); } if (static_cast<int32_t>(*first_byte_ptr) > avail_size) { uint8_t size = HalfRoundUp(*first_byte_ptr); - if (size + (col_num >> 1) > src_row_bytes) { + if (size + (col_num_ >> 1) > src_row_bytes_) { Error(); NOTREACHED(); } *first_byte_ptr = avail_size - 1; } if (!ReadData(&second_byte_ptr, 1)) { - skip_size = skip_size_org; + skip_size_ = skip_size_org; return 2; } for (uint8_t i = 0; i < *first_byte_ptr; i++) { @@ -617,7 +621,7 @@ int32_t BMPDecompressor::DecodeRLE4() { i & 0x01 ? (second_byte & 0x0F) : (second_byte & 0xF0) >> 4; if (!ValidateColorIndex(second_byte)) return 0; - out_row_buffer[col_num++] = second_byte; + out_row_buffer_[col_num_++] = second_byte; } } } @@ -626,46 +630,46 @@ int32_t BMPDecompressor::DecodeRLE4() { NOTREACHED(); } -uint8_t* BMPDecompressor::ReadData(uint8_t** des_buf, uint32_t data_size) { - if (avail_in < 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 = next_in + skip_size; - skip_size += data_size; + *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; + 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; + 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; + if (avail_in_ > 0) + *avail_buf = next_in_; } - return avail_in; + return avail_in_; } void BMPDecompressor::SetHeight(int32_t signed_height) { if (signed_height >= 0) { - height = signed_height; + height_ = signed_height; return; } if (signed_height == std::numeric_limits<int>::min()) { Error(); NOTREACHED(); } - height = -signed_height; - imgTB_flag = true; + height_ = -signed_height; + imgTB_flag_ = true; } |