diff options
Diffstat (limited to 'src/openvic/utility/BMP.cpp')
| -rw-r--r-- | src/openvic/utility/BMP.cpp | 163 |
1 files changed, 0 insertions, 163 deletions
diff --git a/src/openvic/utility/BMP.cpp b/src/openvic/utility/BMP.cpp deleted file mode 100644 index 9a90d68..0000000 --- a/src/openvic/utility/BMP.cpp +++ /dev/null @@ -1,163 +0,0 @@ -#include "BMP.hpp" - -#include <cstring> -#include <set> - -#include "Logger.hpp" - -using namespace OpenVic; - -BMP::~BMP() { - close(); -} - -return_t BMP::open(char const* filepath) { - reset(); - errno = 0; - file = fopen(filepath, "rb"); - if (file == nullptr || errno != 0) { - Logger::error("Failed to open BMP file \"", filepath, "\" (errno = ", errno, ")"); - file = nullptr; - return FAILURE; - } - return SUCCESS; -} - -return_t BMP::read_header() { - if (header_validated) { - Logger::error("BMP header already validated!"); - return FAILURE; - } - if (file == nullptr) { - Logger::error("Cannot read BMP header before opening a file"); - return FAILURE; - } - if (fseek(file, 0, SEEK_SET) != 0) { - Logger::error("Failed to move to the beginning of the BMP file!"); - return FAILURE; - } - if (fread(&header, sizeof(header), 1, file) != 1) { - Logger::error("Failed to read BMP header!"); - return FAILURE; - } - return_t ret = SUCCESS; - - // Validate constants - static constexpr uint16_t BMP_SIGNATURE = 0x4d42; - if (header.signature != BMP_SIGNATURE) { - Logger::error("Invalid BMP signature: ", header.signature, " (must be ", BMP_SIGNATURE, ")"); - ret = FAILURE; - } - static constexpr uint32_t DIB_HEADER_SIZE = 40; - if (header.dib_header_size != DIB_HEADER_SIZE) { - Logger::error("Invalid BMP DIB header size: ", header.dib_header_size, " (must be ", DIB_HEADER_SIZE, ")"); - ret = FAILURE; - } - static constexpr uint16_t NUM_PLANES = 1; - if (header.num_planes != NUM_PLANES) { - Logger::error("Invalid BMP plane count: ", header.num_planes, " (must be ", NUM_PLANES, ")"); - ret = FAILURE; - } - static constexpr uint16_t COMPRESSION = 0; // Only support uncompressed BMPs - if (header.compression != COMPRESSION) { - Logger::error("Invalid BMP compression method: ", header.compression, " (must be ", COMPRESSION, ")"); - ret = FAILURE; - } - - // Validate sizes and dimensions - // TODO - image_size_bytes can be 0 for non-compressed BMPs - if (header.file_size != header.offset + header.image_size_bytes) { - Logger::error("Invalid BMP memory sizes: file size = ", header.file_size, " != ", header.offset + header.image_size_bytes, - " = ", header.offset, " + ", header.image_size_bytes, " = image data offset + image data size"); - ret = FAILURE; - } - // TODO - support negative widths (i.e. horizontal flip) - if (header.width_px <= 0) { - Logger::error("Invalid BMP width: ", header.width_px, " (must be positive)"); - ret = FAILURE; - } - // TODO - support negative heights (i.e. vertical flip) - if (header.height_px <= 0) { - Logger::error("Invalid BMP height: ", header.height_px, " (must be positive)"); - ret = FAILURE; - } - // TODO - validate x_resolution_ppm - // TODO - validate y_resolution_ppm - - // Validate colours -#define VALID_BITS_PER_PIXEL 1, 2, 4, 8, 16, 24, 32 -#define STR(x) #x - static const std::set<uint16_t> BITS_PER_PIXEL { VALID_BITS_PER_PIXEL }; - if (!BITS_PER_PIXEL.contains(header.bits_per_pixel)) { - Logger::error("Invalid BMP bits per pixel: ", header.bits_per_pixel, " (must be one of " STR(VALID_BITS_PER_PIXEL) ")"); - ret = FAILURE; - } -#undef VALID_BITS_PER_PIXEL -#undef STR - static constexpr uint16_t PALETTE_BITS_PER_PIXEL_LIMIT = 8; - if (header.num_colours != 0 && header.bits_per_pixel > PALETTE_BITS_PER_PIXEL_LIMIT) { - Logger::error("Invalid BMP palette size: ", header.num_colours, " (should be 0 as bits per pixel is ", header.bits_per_pixel, " > 8)"); - ret = FAILURE; - } - // TODO - validate important_colours - - palette_size = header.bits_per_pixel > PALETTE_BITS_PER_PIXEL_LIMIT ? 0 - // Use header.num_colours if it's greater than 0 and at most 1 << header.bits_per_pixel - : 0 < header.num_colours && header.num_colours - 1 >> header.bits_per_pixel == 0 ? header.num_colours - : 1 << header.bits_per_pixel; - - const uint32_t expected_offset = palette_size * PALETTE_COLOUR_SIZE + sizeof(header); - if (header.offset != expected_offset) { - Logger::error("Invalid BMP image data offset: ", header.offset, " (should be ", expected_offset, ")"); - ret = FAILURE; - } - - header_validated = ret == SUCCESS; - return ret; -} - -return_t BMP::read_palette() { - if (file == nullptr) { - Logger::error("Cannot read BMP palette before opening a file"); - return FAILURE; - } - if (!header_validated) { - Logger::error("Cannot read palette before BMP header is validated!"); - return FAILURE; - } - if (palette_size == 0) { - Logger::error("Cannot read BMP palette - header indicates this file doesn't have one"); - return FAILURE; - } - if (fseek(file, sizeof(header), SEEK_SET) != 0) { - Logger::error("Failed to move to the palette in the BMP file!"); - return FAILURE; - } - palette.resize(palette_size); - if (fread(palette.data(), palette_size * PALETTE_COLOUR_SIZE, 1, file) != 1) { - Logger::error("Failed to read BMP header!"); - palette.clear(); - return FAILURE; - } - return SUCCESS; -} - -void BMP::close() { - if (file != nullptr) { - if (fclose(file) != 0) - Logger::error("Failed to close BMP!"); - file = nullptr; - } -} - -void BMP::reset() { - close(); - memset(&header, 0, sizeof(header)); - header_validated = false; - palette_size = 0; - palette.clear(); -} - -std::vector<colour_t> const& BMP::get_palette() const { - return palette; -} |