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Start implementing tiffread

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Abdelrahman Said
2024-04-20 16:01:39 +01:00
parent b0d7098add
commit e7a3fddb30
3 changed files with 199 additions and 0 deletions
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97
src/main.c Normal file
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#include <netinet/in.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#define TAG_MAX_COUNT (UINT16_MAX * sizeof(const char *))
// Technically, the type parameter is 2-bytes long, but there aren't so many
// types specified in the spec, so UINT8_MAX should be sufficient
#define TYPE_MAX_COUNT (UINT8_MAX * sizeof(const char *))
// clang-format off
enum {
TIFF_ORDER_LITTLE_ENDIAN = 0x4949,
TIFF_ORDER_BIG_ENDIAN = 0x4d4d,
};
// clang-format on
typedef struct hdr TiffHdr;
struct hdr {
uint16_t order;
uint16_t magic;
uint32_t first_ifd_offset;
};
enum tiff_public_tags {
#include "tiff_public_tags.inc"
};
const char *tag_names[TAG_MAX_COUNT] = {
#define TIFF_TAG_LOOKUP
#include "tiff_public_tags.inc"
#undef TIFF_TAG_LOOKUP
};
enum tiff_field_types {
#include "tiff_field_types.inc"
};
const char *filed_type_names[TYPE_MAX_COUNT] = {
#define TIFF_TYPE_LOOKUP
#include "tiff_field_types.inc"
#undef TIFF_TYPE_LOOKUP
};
typedef struct field TiffField;
struct field {
uint16_t tag;
uint16_t type;
uint32_t count;
uint32_t value_offset;
};
typedef struct IFD TiffIFD;
struct IFD {
uint16_t count;
TiffField *fields;
uint32_t next_ifd;
};
int main(int argc, char *argv[]) {
const char *file_to_open = argc > 1 ? argv[1] : "./resources/test.tif";
FILE *fp = fopen(file_to_open, "r");
TiffHdr header;
TiffIFD ifd = {0};
fread(&header, sizeof(TiffHdr), 1, fp);
printf("ORDER: %04x\n", header.order);
printf("MAGIC: %04x\n", header.magic);
fseek(fp, header.first_ifd_offset, SEEK_SET);
fread(&(ifd.count), sizeof(ifd.count), 1, fp);
printf("COUNT: %u\n", ifd.count);
TiffField fields[ifd.count];
memset(fields, 0, sizeof(TiffField) * ifd.count);
for (uint32_t i = 0; i < ifd.count; ++i) {
fread(fields + i, sizeof(TiffField), 1, fp);
printf("ENTRY %02u\n", i);
printf("\t TAG: %04u (%s)\n", fields[i].tag,
tag_names[fields[i].tag] ? tag_names[fields[i].tag] : "UNKNOWN");
printf("\t TYPE: 0x%04x (%s)\n", fields[i].type,
filed_type_names[fields[i].type] ? filed_type_names[fields[i].type]
: "UNKNOWN");
printf("\t COUNT: %04u\n", fields[i].count);
printf("\tVAL/OFF: %04u\n", fields[i].value_offset);
}
fclose(fp);
return 0;
}

20
src/tiff_field_types.inc Normal file
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#ifdef TIFF_TYPE_LOOKUP
#undef TIFF_TYPE
#define TIFF_TYPE(NAME, ID, VALUE) [VALUE] = NAME,
#else
#undef TIFF_TYPE
#define TIFF_TYPE(NAME, ID, VALUE) ID = VALUE,
#endif /* ifdef TIFF_TYPE_LOOKUP */
TIFF_TYPE("UNSIGNED BYTE" , TIFF_ENTRY_BYTE , 0x0001) // 8-bit unsigned integer
TIFF_TYPE("ASCII" , TIFF_ENTRY_ASCII , 0x0002) // 8-bit byte that contains a 7-bit ASCII code; the last byte must be NUL (binary zero)
TIFF_TYPE("UNSIGNED SHORT" , TIFF_ENTRY_SHORT , 0x0003) // 16-bit (2-byte) unsigned integer
TIFF_TYPE("UNSIGNED LONG" , TIFF_ENTRY_LONG , 0x0004) // 32-bit (4-byte) unsigned integer
TIFF_TYPE("UNSIGNED RATIONAL", TIFF_ENTRY_RATIONAL , 0x0005) // Two LONGs: the first represents the numerator of a fraction; the second, the denominator
TIFF_TYPE("SIGNED BYTE" , TIFF_ENTRY_SBYTE , 0x0006) // An 8-bit signed (twos-complement) integer
TIFF_TYPE("UNDEFINED" , TIFF_ENTRY_UNDEFINED , 0x0007) // An 8-bit byte that may contain anything, depending on the definition of the field
TIFF_TYPE("SIGNED SHORT" , TIFF_ENTRY_SSHORT , 0x0008) // A 16-bit (2-byte) signed (twos-complement) integer
TIFF_TYPE("SIGNED LONG" , TIFF_ENTRY_SLONG , 0x0009) // A 32-bit (4-byte) signed (twos-complement) integer
TIFF_TYPE("SIGNED RATIONAL" , TIFF_ENTRY_SRATIONAL , 0x000a) // Two SLONG’s: the first represents the numerator of a fraction, the second the denominator
TIFF_TYPE("FLOAT" , TIFF_ENTRY_FLOAT , 0x000b) // Single precision (4-byte) IEEE format
TIFF_TYPE("DOUBLE" , TIFF_ENTRY_DOUBLE , 0x000c) // Double precision (8-byte) IEEE format

82
src/tiff_public_tags.inc Normal file
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#ifdef TIFF_TAG_LOOKUP
#undef TIFF_TAG
#define TIFF_TAG(NAME, ID, VALUE) [VALUE] = NAME,
#else
#undef TIFF_TAG
#define TIFF_TAG(NAME, ID, VALUE) ID = VALUE,
#endif /* ifdef TIFF_TAG_LOOKUP */
TIFF_TAG("NEW_SUBFILE_TYPE" , TIFF_PUBLIC_TAG_NEW_SUBFILE_TYPE , 0x00fe)
TIFF_TAG("SUBFILE_TYPE" , TIFF_PUBLIC_TAG_SUBFILE_TYPE , 0x00ff)
TIFF_TAG("IMAGE_WIDTH" , TIFF_PUBLIC_TAG_IMAGE_WIDTH , 0x0100)
TIFF_TAG("IMAGE_LENGTH" , TIFF_PUBLIC_TAG_IMAGE_LENGTH , 0x0101)
TIFF_TAG("BITS_PER_SAMPLE" , TIFF_PUBLIC_TAG_BITS_PER_SAMPLE , 0x0102)
TIFF_TAG("COMPRESSION" , TIFF_PUBLIC_TAG_COMPRESSION , 0x0103)
TIFF_TAG("PHOTOMETRIC_INTERPRETATION" , TIFF_PUBLIC_TAG_PHOTOMETRIC_INTERPRETATION , 0x0106)
TIFF_TAG("THRESHHOLDING" , TIFF_PUBLIC_TAG_THRESHHOLDING , 0x0107)
TIFF_TAG("CELL_WIDTH" , TIFF_PUBLIC_TAG_CELL_WIDTH , 0x0108)
TIFF_TAG("CELL_LENGTH" , TIFF_PUBLIC_TAG_CELL_LENGTH , 0x0109)
TIFF_TAG("FILL_ORDER" , TIFF_PUBLIC_TAG_FILL_ORDER , 0x010a)
TIFF_TAG("DOCUMENT_NAME" , TIFF_PUBLIC_TAG_DOCUMENT_NAME , 0x010d)
TIFF_TAG("IMAGE_DESCRIPTION" , TIFF_PUBLIC_TAG_IMAGE_DESCRIPTION , 0x010e)
TIFF_TAG("MAKE" , TIFF_PUBLIC_TAG_MAKE , 0x010f)
TIFF_TAG("MODEL" , TIFF_PUBLIC_TAG_MODEL , 0x0110)
TIFF_TAG("STRIP_OFFSETS" , TIFF_PUBLIC_TAG_STRIP_OFFSETS , 0x0111)
TIFF_TAG("ORIENTATION" , TIFF_PUBLIC_TAG_ORIENTATION , 0x0112)
TIFF_TAG("SAMPLES_PER_PIXEL" , TIFF_PUBLIC_TAG_SAMPLES_PER_PIXEL , 0x0115)
TIFF_TAG("ROWS_PER_STRIP" , TIFF_PUBLIC_TAG_ROWS_PER_STRIP , 0x0116)
TIFF_TAG("STRIP_BYTE_COUNTS" , TIFF_PUBLIC_TAG_STRIP_BYTE_COUNTS , 0x0117)
TIFF_TAG("MIN_SAMPLE_VALUE" , TIFF_PUBLIC_TAG_MIN_SAMPLE_VALUE , 0x0118)
TIFF_TAG("MAX_SAMPLE_VALUE" , TIFF_PUBLIC_TAG_MAX_SAMPLE_VALUE , 0x0119)
TIFF_TAG("X_RESOLUTION" , TIFF_PUBLIC_TAG_X_RESOLUTION , 0x011a)
TIFF_TAG("Y_RESOLUTION" , TIFF_PUBLIC_TAG_Y_RESOLUTION , 0x011b)
TIFF_TAG("PLANAR_CONFIGURATION" , TIFF_PUBLIC_TAG_PLANAR_CONFIGURATION , 0x011c)
TIFF_TAG("PAGE_NAME" , TIFF_PUBLIC_TAG_PAGE_NAME , 0x011d)
TIFF_TAG("X_POSITION" , TIFF_PUBLIC_TAG_X_POSITION , 0x011e)
TIFF_TAG("Y_POSITION" , TIFF_PUBLIC_TAG_Y_POSITION , 0x011f)
TIFF_TAG("FREE_OFFSETS" , TIFF_PUBLIC_TAG_FREE_OFFSETS , 0x0120)
TIFF_TAG("FREE_BYTE_COUNTS" , TIFF_PUBLIC_TAG_FREE_BYTE_COUNTS , 0x0121)
TIFF_TAG("GRAY_RESPONSE_UNIT" , TIFF_PUBLIC_TAG_GRAY_RESPONSE_UNIT , 0x0122)
TIFF_TAG("GRAY_RESPONSE_CURVE" , TIFF_PUBLIC_TAG_GRAY_RESPONSE_CURVE , 0x0123)
TIFF_TAG("T4_OPTIONS" , TIFF_PUBLIC_TAG_T4_OPTIONS , 0x0124)
TIFF_TAG("T6_OPTIONS" , TIFF_PUBLIC_TAG_T6_OPTIONS , 0x0125)
TIFF_TAG("RESOLUTION_UNIT" , TIFF_PUBLIC_TAG_RESOLUTION_UNIT , 0x0128)
TIFF_TAG("PAGE_NUMBER" , TIFF_PUBLIC_TAG_PAGE_NUMBER , 0x0129)
TIFF_TAG("TRANSFER_FUNCTION" , TIFF_PUBLIC_TAG_TRANSFER_FUNCTION , 0x012d)
TIFF_TAG("SOFTWARE" , TIFF_PUBLIC_TAG_SOFTWARE , 0x0131)
TIFF_TAG("DATE_TIME" , TIFF_PUBLIC_TAG_DATE_TIME , 0x0132)
TIFF_TAG("ARTIST" , TIFF_PUBLIC_TAG_ARTIST , 0x013b)
TIFF_TAG("HOST_COMPUTER" , TIFF_PUBLIC_TAG_HOST_COMPUTER , 0x013c)
TIFF_TAG("PREDICTOR" , TIFF_PUBLIC_TAG_PREDICTOR , 0x013d)
TIFF_TAG("WHITE_POINT" , TIFF_PUBLIC_TAG_WHITE_POINT , 0x013e)
TIFF_TAG("PRIMARY_CHROMATICITIES" , TIFF_PUBLIC_TAG_PRIMARY_CHROMATICITIES , 0x013f)
TIFF_TAG("COLOR_MAP" , TIFF_PUBLIC_TAG_COLOR_MAP , 0x0140)
TIFF_TAG("HALFTONE_HINTS" , TIFF_PUBLIC_TAG_HALFTONE_HINTS , 0x0141)
TIFF_TAG("TILE_WIDTH" , TIFF_PUBLIC_TAG_TILE_WIDTH , 0x0142)
TIFF_TAG("TILE_LENGTH" , TIFF_PUBLIC_TAG_TILE_LENGTH , 0x0143)
TIFF_TAG("TILE_OFFSETS" , TIFF_PUBLIC_TAG_TILE_OFFSETS , 0x0144)
TIFF_TAG("TILE_BYTE_COUNTS" , TIFF_PUBLIC_TAG_TILE_BYTE_COUNTS , 0x0145)
TIFF_TAG("INK_SET" , TIFF_PUBLIC_TAG_INK_SET , 0x014c)
TIFF_TAG("INK_NAMES" , TIFF_PUBLIC_TAG_INK_NAMES , 0x014d)
TIFF_TAG("NUMBER_OF_INKS" , TIFF_PUBLIC_TAG_NUMBER_OF_INKS , 0x014e)
TIFF_TAG("DOT_RANGE" , TIFF_PUBLIC_TAG_DOT_RANGE , 0x0150)
TIFF_TAG("TARGET_PRINTER" , TIFF_PUBLIC_TAG_TARGET_PRINTER , 0x0151)
TIFF_TAG("EXTRA_SAMPLES" , TIFF_PUBLIC_TAG_EXTRA_SAMPLES , 0x0152)
TIFF_TAG("SAMPLE_FORMAT" , TIFF_PUBLIC_TAG_SAMPLE_FORMAT , 0x0153)
TIFF_TAG("S_MIN_SAMPLE_VALUE" , TIFF_PUBLIC_TAG_S_MIN_SAMPLE_VALUE , 0x0154)
TIFF_TAG("S_MAX_SAMPLE_VALUE" , TIFF_PUBLIC_TAG_S_MAX_SAMPLE_VALUE , 0x0155)
TIFF_TAG("TRANSFER_RANGE" , TIFF_PUBLIC_TAG_TRANSFER_RANGE , 0x0156)
TIFF_TAG("JPEG_PROC" , TIFF_PUBLIC_TAG_JPEG_PROC , 0x0200)
TIFF_TAG("JPEG_INTERCHANGE_FORMAT" , TIFF_PUBLIC_TAG_JPEG_INTERCHANGE_FORMAT , 0x0201)
TIFF_TAG("JPEG_INTERCHANGE_FORMAT_LENGTH", TIFF_PUBLIC_TAG_JPEG_INTERCHANGE_FORMAT_LENGTH , 0x0202)
TIFF_TAG("JPEG_RESTART_INTERVAL" , TIFF_PUBLIC_TAG_JPEG_RESTART_INTERVAL , 0x0203)
TIFF_TAG("JPEG_LOSSLESS_PREDICTORS" , TIFF_PUBLIC_TAG_JPEG_LOSSLESS_PREDICTORS , 0x0205)
TIFF_TAG("JPEG_POINT_TRANSFORMS" , TIFF_PUBLIC_TAG_JPEG_POINT_TRANSFORMS , 0x0206)
TIFF_TAG("JPEG_QTABLES" , TIFF_PUBLIC_TAG_JPEG_QTABLES , 0x0207)
TIFF_TAG("JPEG_DCTABLES" , TIFF_PUBLIC_TAG_JPEG_DCTABLES , 0x0208)
TIFF_TAG("JPEG_ACTABLES" , TIFF_PUBLIC_TAG_JPEG_ACTABLES , 0x0209)
TIFF_TAG("YCBCR_COEFFICIENTS" , TIFF_PUBLIC_TAG_YCBCR_COEFFICIENTS , 0x0211)
TIFF_TAG("YCBCR_SUB_SAMPLING" , TIFF_PUBLIC_TAG_YCBCR_SUB_SAMPLING , 0x0212)
TIFF_TAG("YCBCR_POSITIONING" , TIFF_PUBLIC_TAG_YCBCR_POSITIONING , 0x0213)
TIFF_TAG("REFERENCE_BLACK_WHITE" , TIFF_PUBLIC_TAG_REFERENCE_BLACK_WHITE , 0x0214)
TIFF_TAG("COPYRIGHT" , TIFF_PUBLIC_TAG_COPYRIGHT , 0x8298)