From: Søren Sandmann Pedersen <s...@redhat.com> This macro will eventually allow the fetchers and storers to be generated automatically. For now, it's just a skeleton that doesn't actually do anything. --- pixman/pixman-access.c | 114 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 114 insertions(+), 0 deletions(-)
diff --git a/pixman/pixman-access.c b/pixman/pixman-access.c
index 2e9e536..e8356e9 100644
--- a/pixman/pixman-access.c
+++ b/pixman/pixman-access.c
@@ -186,6 +186,120 @@ convert_pixel (pixman_format_code_t from,
pixman_format_code_t to, uint32_t pixe
return a | r | g | b;
}
+static force_inline uint32_t
+convert_pixel_from_a8r8g8b8 (pixman_format_code_t format, uint32_t pixel)
+{
+ return convert_pixel (PIXMAN_a8r8g8b8, format, pixel);
+}
+
+static force_inline uint32_t
+convert_pixel_to_a8r8g8b8 (pixman_format_code_t format, uint32_t pixel)
+{
+ return convert_pixel (format, PIXMAN_a8r8g8b8, pixel);
+}
+
+static force_inline uint32_t
+fetch_and_convert_pixel (pixman_image_t * image,
+ const uint8_t * bits,
+ pixman_format_code_t format)
+{
+ uint32_t pixel;
+
+ switch (PIXMAN_FORMAT_BPP (format))
+ {
+ default:
+ pixel = 0xffff00ff; /* As ugly as possible to detect the bug */
+ break;
+ }
+
+ return convert_pixel_to_a8r8g8b8 (format, pixel);
+}
+
+static force_inline void
+convert_and_store_pixel (bits_image_t * image,
+ uint8_t * dest,
+ pixman_format_code_t format,
+ uint32_t pixel)
+{
+ uint32_t converted = convert_pixel_from_a8r8g8b8 (format, pixel);
+
+ switch (PIXMAN_FORMAT_BPP (format))
+ {
+ default:
+ *dest = 0x0;
+ break;
+ }
+}
+
+#define MAKE_ACCESSORS(format) \
+ static void
\
+ fetch_scanline_ ## format (pixman_image_t *image, \
+ int x, \
+ int y, \
+ int width, \
+ uint32_t * buffer, \
+ const uint32_t *mask) \
+ { \
+ int byte_pp = PIXMAN_FORMAT_BPP (PIXMAN_ ## format) / 8; \
+ uint8_t *bits = \
+ (uint8_t *)(image->bits.bits + y * image->bits.rowstride); \
+ uint8_t *end; \
+ \
+ bits += byte_pp * x; \
+ end = bits + width * byte_pp; \
+ \
+ while (bits < end) \
+ { \
+ *buffer++ = \
+ fetch_and_convert_pixel (image, bits, PIXMAN_ ## format); \
+ \
+ bits += byte_pp; \
+ } \
+ } \
+ \
+ static void
\
+ store_scanline_ ## format (bits_image_t * image, \
+ int x, \
+ int y, \
+ int width, \
+ const uint32_t *values) \
+ { \
+ int byte_pp = PIXMAN_FORMAT_BPP (PIXMAN_ ## format) / 8; \
+ uint8_t *dest = \
+ (uint8_t *)(image->bits + y * image->rowstride); \
+ const uint32_t *end; \
+ \
+ dest += byte_pp * x; \
+ end = values + width; \
+ \
+ while (values < end) \
+ { \
+ convert_and_store_pixel ( \
+ image, dest, PIXMAN_ ## format, *values); \
+ \
+ values++; \
+ dest += byte_pp; \
+ } \
+ } \
+ \
+ static uint32_t \
+ fetch_pixel_ ## format (bits_image_t *image, \
+ int offset, \
+ int line) \
+ { \
+ uint8_t *bits = \
+ (uint8_t *)(image->bits + line * image->rowstride); \
+ int byte_pp = PIXMAN_FORMAT_BPP (PIXMAN_ ## format) / 8; \
+ \
+ bits += offset * byte_pp; \
+ \
+ return fetch_and_convert_pixel ((pixman_image_t *)image, \
+ bits, PIXMAN_ ## format); \
+ } \
+ \
+ static const void *const __dummy__ ## format
+
+
/********************************** Fetch ************************************/
static void
--
1.7.4
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