diff options
| author | Sebastian Rasmussen <sebras@gmail.com> | 2016-03-26 09:51:36 +0100 |
|---|---|---|
| committer | Robin Watts <robin.watts@artifex.com> | 2016-03-29 13:06:27 +0100 |
| commit | 02883863ef37e81087b08949cf7ef6de53591100 (patch) | |
| tree | 3236905b3c41701555ff3866a844e92c23a00cd4 | |
| parent | 6b2506eac65a7fb593146aa4044f7171615fd62f (diff) | |
| download | mupdf-02883863ef37e81087b08949cf7ef6de53591100.tar.xz | |
bmp: Add support for 4-bit bitmasks.
| -rw-r--r-- | source/fitz/load-bmp.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/source/fitz/load-bmp.c b/source/fitz/load-bmp.c index 8b084638..e3ba67f5 100644 --- a/source/fitz/load-bmp.c +++ b/source/fitz/load-bmp.c @@ -582,11 +582,12 @@ bmp_read_bitmap(fz_context *ctx, struct info *info, unsigned char *p, unsigned c } /* These only apply for components in 16-bit mode + 4-bit (15 * 546) / 32 5-bit (31 * 264) / 32 6-bit (63 * 130 ) / 32 */ - rmult = info->rbits == 5 ? 264 : 130; - gmult = info->gbits == 5 ? 264 : 130; - bmult = info->bbits == 5 ? 264 : 130; + rmult = info->rbits == 4 ? 546 : (info->rbits == 5 ? 264 : 130); + gmult = info->gbits == 4 ? 546 : (info->gbits == 5 ? 264 : 130); + bmult = info->bbits == 4 ? 546 : (info->bbits == 5 ? 264 : 130); for (y = 0; y < height; y++) { @@ -735,11 +736,11 @@ bmp_read_image(fz_context *ctx, struct info *info, unsigned char *p, int total, (info->compression == BI_BITFIELDS && info->bitcount != 16 && info->bitcount != 32)) fz_throw(ctx, FZ_ERROR_GENERIC, "invalid bits per pixel (%d) for compression (%d) in bmp image", info->bitcount, info->compression); - if (info->rbits > 0 && info->rbits != 5 && info->rbits != 8) + if (info->rbits > 0 && info->rbits != 4 && info->rbits != 5 && info->rbits != 8) fz_throw(ctx, FZ_ERROR_GENERIC, "unsupported %d bit red mask in bmp image", info->rbits); - if (info->gbits > 0 && info->gbits != 5 && info->gbits != 6 && info->gbits != 8) + if (info->gbits > 0 && info->gbits != 4 && info->gbits != 5 && info->gbits != 6 && info->gbits != 8) fz_throw(ctx, FZ_ERROR_GENERIC, "unsupported %d bit green mask in bmp image", info->gbits); - if (info->bbits > 0 && info->bbits != 5 && info->rbits != 8) + if (info->bbits > 0 && info->bbits != 4 && info->bbits != 5 && info->bbits != 8) fz_throw(ctx, FZ_ERROR_GENERIC, "unsupported %d bit blue mask in bmp image", info->bbits); if (!only_metadata) |