Mercurial > hg > dmlib

comparison tools/lib64gfx.c @ 1833:19d4f76e003d

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Improve RLE compression by checking for "first byte" condition in the compressor.
author Matti Hamalainen <ccr@tnsp.org>
date Fri, 22 Jun 2018 16:35:08 +0300
parents ce1a734b016f
children 88cef7758303
comparison
equal deleted inserted replaced
1832:843d3a593f05 1833:19d4f76e003d
664 664
665 while (dmGrowBufGetU8(&src, &data)) 665 while (dmGrowBufGetU8(&src, &data))
666 { 666 {
667 // If new data byte is different, or we exceed the rleMaxCount 667 // If new data byte is different, or we exceed the rleMaxCount
668 // for the active runs mode(s) .. then encode the run. 668 // for the active runs mode(s) .. then encode the run.
669 if (data != prev || 669 if ((data != prev && prev != -1) ||
670 ((cfg->flags & DM_RLE_WORD_RUNS) && count >= cfg->rleMaxCountW) || 670 ((cfg->flags & DM_RLE_WORD_RUNS) && count >= cfg->rleMaxCountW) ||
671 (((cfg->flags & DM_RLE_RUNS_MASK) == DM_RLE_BYTE_RUNS) && count >= cfg->rleMaxCountB)) 671 (((cfg->flags & DM_RLE_RUNS_MASK) == DM_RLE_BYTE_RUNS) && count >= cfg->rleMaxCountB))
672 { 672 {
673 if ((res = dmEncodeGenericRLESequence(dst, prev, count, cfg)) != DMERR_OK) 673 if ((res = dmEncodeGenericRLESequence(dst, prev, count, cfg)) != DMERR_OK)
674 goto err; 674 goto err;