diff options
Diffstat (limited to 'lpg/libqr/data-common.c')
| -rw-r--r-- | lpg/libqr/data-common.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/lpg/libqr/data-common.c b/lpg/libqr/data-common.c new file mode 100644 index 0000000..123e5c4 --- /dev/null +++ b/lpg/libqr/data-common.c @@ -0,0 +1,58 @@ +#include <stdlib.h> +#include <qr/data.h> + +#include "bitstream.h" +#include "data-common.h" + +const enum qr_data_type QR_TYPE_CODES[16] = { + QR_DATA_INVALID, /* 0000 */ + QR_DATA_NUMERIC, /* 0001 */ + QR_DATA_ALPHA, /* 0010 */ + QR_DATA_MIXED, /* 0011 */ + QR_DATA_8BIT, /* 0100 */ + QR_DATA_FNC1, /* 0101 */ + QR_DATA_INVALID, /* 0110 */ + QR_DATA_ECI, /* 0111 */ + QR_DATA_KANJI, /* 1000 */ + QR_DATA_FNC1, /* 1001 */ + QR_DATA_INVALID, /* 1010 */ + QR_DATA_INVALID, /* 1011 */ + QR_DATA_INVALID, /* 1100 */ + QR_DATA_INVALID, /* 1101 */ + QR_DATA_INVALID, /* 1110 */ + QR_DATA_INVALID, /* 1111 */ +}; + +void qr_free_data(struct qr_data * data) +{ + bitstream_destroy(data->bits); + free(data); +} + +size_t get_size_field_length(int format, enum qr_data_type type) +{ + static const size_t QR_SIZE_LENGTHS[3][4] = { + { 10, 9, 8, 8 }, + { 12, 11, 16, 10 }, + { 14, 13, 16, 12 } + }; + int row, col; + + switch (type) { + case QR_DATA_NUMERIC: col = 0; break; + case QR_DATA_ALPHA: col = 1; break; + case QR_DATA_8BIT: col = 2; break; + case QR_DATA_KANJI: col = 3; break; + default: return 0; + } + + if (format < 10) + row = 0; + else if (format < 27) + row = 1; + else + row = 2; + + return QR_SIZE_LENGTHS[row][col]; +} + |