diff options
| author | Peter Harris <peter.harris@hummingbird.com> | 2008-10-01 23:27:28 -0700 |
|---|---|---|
| committer | Bart Massey <bart@cs.pdx.edu> | 2008-10-01 23:27:28 -0700 |
| commit | 4d82e387654f86387124cce115cc1660a6d185b1 (patch) | |
| tree | c0224c962d70d95b1891db221ac8eb9ac968a92a | |
| parent | 4e6fea8e01761389f1a82ce407005e71cad0cd2c (diff) | |
more endianness patches
Signed-off-by: Bart Massey <bart@cs.pdx.edu>
| -rw-r--r-- | image/xcb_image.c | 28 |
1 files changed, 26 insertions, 2 deletions
diff --git a/image/xcb_image.c b/image/xcb_image.c index 96a1fd2..2388948 100644 --- a/image/xcb_image.c +++ b/image/xcb_image.c @@ -532,7 +532,7 @@ static uint32_t xy_image_byte (xcb_image_t *image, uint32_t x) { x >>= 3; - if (image->byte_order == XCB_IMAGE_ORDER_LSB_FIRST) + if (image->byte_order == image->bit_order) return x; switch (image->unit) { default: @@ -868,6 +868,22 @@ byte_order(xcb_image_t *i) { uint32_t flip = i->byte_order == XCB_IMAGE_ORDER_MSB_FIRST; + switch (i->bpp) { + default: + case 8: + return 0; + case 16: + return flip; + case 32: + return flip | (flip << 1); + } +} + +static uint32_t +bit_order(xcb_image_t *i) +{ + uint32_t flip = i->byte_order != i->bit_order; + switch (i->unit) { default: case 8: @@ -885,7 +901,15 @@ byte_order(xcb_image_t *i) static uint32_t conversion_byte_swap(xcb_image_t *src, xcb_image_t *dst) { - return byte_order(src) ^ byte_order(dst); + xcb_image_format_t ef = effective_format(src->format, src->bpp); + + /* src_ef == dst_ef in all callers of this function */ + if (ef == XCB_IMAGE_FORMAT_XY_PIXMAP) { + return bit_order(src) ^ bit_order(dst); + } else { + /* src_bpp == dst_bpp in all callers of this function */ + return byte_order(src) ^ byte_order(dst); + } } xcb_image_t * |