diff options
| -rw-r--r-- | converter/other/pngtopam.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/converter/other/pngtopam.c b/converter/other/pngtopam.c index 635c8aa0..eab946ea 100644 --- a/converter/other/pngtopam.c +++ b/converter/other/pngtopam.c @@ -278,13 +278,15 @@ allocPngRaster(struct pngx * const pngxP, MALLOCARRAY(pngImage, pngxP->info_ptr->height); if (pngImage == NULL) - pm_error("couldn't allocate space for %u PNG raster rows", + pm_error("couldn't allocate index space for %u PNG raster rows. " + "Try -byrow, which needs only 1 row of buffer space. ", (unsigned int)pngxP->info_ptr->height); for (row = 0; row < pngxP->info_ptr->height; ++row) { MALLOCARRAY(pngImage[row], lineSize); if (pngImage[row] == NULL) - pm_error("couldn't allocate space for %uth row of PNG raster", + pm_error("couldn't allocate space for %uth row of PNG raster. " + "Try -byrow, which needs only 1 row of buffer space. ", row); } *pngImageP = pngImage; @@ -385,6 +387,11 @@ reader_createRowByRow(struct pngx * const pngxP, readerP->nextRowNum = 0; + if (pngxP->info_ptr->interlace_type != PNG_INTERLACE_NONE) + pm_message("WARNING: this is an interlaced PNG. The PAM output " + "will be interlaced. To get proper output, " + "don't use -byrow"); + return readerP; } |