diff options
Diffstat (limited to 'lpg/libqr/code-create.c')
| -rw-r--r-- | lpg/libqr/code-create.c | 24 |
1 files changed, 18 insertions, 6 deletions
diff --git a/lpg/libqr/code-create.c b/lpg/libqr/code-create.c index ae23acc..1a38967 100644 --- a/lpg/libqr/code-create.c +++ b/lpg/libqr/code-create.c @@ -179,7 +179,7 @@ static struct qr_bitstream * make_data(int version, const size_t total_words = total_bits / 8; const size_t total_data = QR_DATA_WORD_COUNT[version - 1][ec ^ 0x1]; size_t total_blocks, block_count[2], data_words, rs_words; - size_t i; + size_t i, w; struct qr_bitstream * dcopy = 0; struct qr_bitstream * out = 0; struct qr_bitstream ** blocks = 0; @@ -235,12 +235,24 @@ static struct qr_bitstream * make_data(int version, } /* Finally, write everything out in the correct order */ - qr_bitstream_seek(dcopy, 0); - for (i = 0; i < total_blocks; ++i) { - size_t dw = data_words + (i >= block_count[0]); - qr_bitstream_copy(out, dcopy, dw * 8); - qr_bitstream_cat(out, blocks[i]); + for (w = 0; w < data_words + 1; ++w) { + for (i = (w == data_words ? block_count[0] : 0); i < total_blocks; ++i) { + size_t di = w + (i < block_count[0] ? + i * data_words : + i * (data_words + 1) - block_count[0]); + + qr_bitstream_seek(dcopy, di * 8); + qr_bitstream_write(out, + qr_bitstream_read(dcopy, 8), 8); + } } + for (i = 0; i < total_blocks; ++i) + qr_bitstream_seek(blocks[i], 0); + for (w = 0; w < rs_words; ++w) + for (i = 0; i < total_blocks; ++i) + qr_bitstream_write(out, + qr_bitstream_read(blocks[i], 8), 8); + qr_bitstream_write(out, 0, total_bits - total_words * 8); fputs("Final bitstream:\n", stderr); |