1 files changed, 38 insertions, 0 deletions
diff --git a/lpg/libqr/data-common.c b/lpg/libqr/data-common.c
new file mode 100644
index 0000000..af3a766
--- /dev/null
+++ b/lpg/libqr/data-common.c
@@ -0,0 +1,38 @@
+#include <stdlib.h>
+
+#include <qr/bitstream.h>
+#include <qr/data.h>
+
+void qr_data_destroy(struct qr_data * data)
+{
+        qr_bitstream_destroy(data->bits);
+        free(data);
+}
+
+size_t qr_data_size_field_length(int version, 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 (version < 10)
+                row = 0;
+        else if (version < 27)
+                row = 1;
+        else
+                row = 2;
+
+        return QR_SIZE_LENGTHS[row][col];
+}
+