diff options
| -rw-r--r-- | source/fitz/bitmap.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/source/fitz/bitmap.c b/source/fitz/bitmap.c index 046e7aa0..7003a894 100644 --- a/source/fitz/bitmap.c +++ b/source/fitz/bitmap.c @@ -353,12 +353,17 @@ pbm_write_band(fz_context *ctx, fz_band_writer *writer, int stride, int band_sta int h = writer->h; int n = writer->n; int bytestride; + int end = band_start + band_height; if (n != 1) fz_throw(ctx, FZ_ERROR_GENERIC, "too many color components in bitmap"); + if (end > h) + end = h; + end -= band_start; + bytestride = (w + 7) >> 3; - while (h--) + while (end--) { fz_write(ctx, out, p, bytestride); p += stride; @@ -373,12 +378,17 @@ pkm_write_band(fz_context *ctx, fz_band_writer *writer, int stride, int band_sta int h = writer->h; int n = writer->n; int bytestride; + int end = band_start + band_height; if (n != 4) fz_throw(ctx, FZ_ERROR_GENERIC, "wrong number of color components in bitmap"); + if (end > h) + end = h; + end -= band_start; + bytestride = stride - (w>>1); - while (h--) + while (end--) { int ww = w-1; while (ww > 0) |