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Diffstat (limited to 'pixman/pixman/pixman-access.c')
-rw-r--r--pixman/pixman/pixman-access.c750
1 files changed, 417 insertions, 333 deletions
diff --git a/pixman/pixman/pixman-access.c b/pixman/pixman/pixman-access.c
index 9feafc49d..b5c8e4017 100644
--- a/pixman/pixman/pixman-access.c
+++ b/pixman/pixman/pixman-access.c
@@ -31,6 +31,7 @@
#include <stdlib.h>
#include <string.h>
#include <assert.h>
+#include <math.h>
#include "pixman-accessor.h"
#include "pixman-private.h"
@@ -506,20 +507,122 @@ MAKE_ACCESSORS(a1);
MAKE_ACCESSORS(g1);
/********************************** Fetch ************************************/
+/* Table mapping sRGB-encoded 8 bit numbers to linearly encoded
+ * floating point numbers. We assume that single precision
+ * floating point follows the IEEE 754 format.
+ */
+static const uint32_t to_linear_u[256] =
+{
+ 0x00000000, 0x399f22b4, 0x3a1f22b4, 0x3a6eb40e, 0x3a9f22b4, 0x3ac6eb61,
+ 0x3aeeb40e, 0x3b0b3e5d, 0x3b1f22b4, 0x3b33070b, 0x3b46eb61, 0x3b5b518a,
+ 0x3b70f18a, 0x3b83e1c5, 0x3b8fe614, 0x3b9c87fb, 0x3ba9c9b5, 0x3bb7ad6d,
+ 0x3bc63547, 0x3bd5635f, 0x3be539bd, 0x3bf5ba70, 0x3c0373b5, 0x3c0c6152,
+ 0x3c15a703, 0x3c1f45bc, 0x3c293e68, 0x3c3391f4, 0x3c3e4149, 0x3c494d43,
+ 0x3c54b6c7, 0x3c607eb1, 0x3c6ca5df, 0x3c792d22, 0x3c830aa8, 0x3c89af9e,
+ 0x3c9085db, 0x3c978dc5, 0x3c9ec7c0, 0x3ca63432, 0x3cadd37d, 0x3cb5a601,
+ 0x3cbdac20, 0x3cc5e639, 0x3cce54ab, 0x3cd6f7d2, 0x3cdfd00e, 0x3ce8ddb9,
+ 0x3cf2212c, 0x3cfb9ac1, 0x3d02a569, 0x3d0798dc, 0x3d0ca7e4, 0x3d11d2ae,
+ 0x3d171963, 0x3d1c7c2e, 0x3d21fb3a, 0x3d2796af, 0x3d2d4ebb, 0x3d332380,
+ 0x3d39152b, 0x3d3f23e3, 0x3d454fd0, 0x3d4b991c, 0x3d51ffeb, 0x3d588466,
+ 0x3d5f26b7, 0x3d65e6fe, 0x3d6cc564, 0x3d73c210, 0x3d7add25, 0x3d810b65,
+ 0x3d84b793, 0x3d88732e, 0x3d8c3e48, 0x3d9018f4, 0x3d940343, 0x3d97fd48,
+ 0x3d9c0714, 0x3da020b9, 0x3da44a48, 0x3da883d6, 0x3daccd70, 0x3db12728,
+ 0x3db59110, 0x3dba0b38, 0x3dbe95b2, 0x3dc3308f, 0x3dc7dbe0, 0x3dcc97b4,
+ 0x3dd1641c, 0x3dd6412a, 0x3ddb2eec, 0x3de02d75, 0x3de53cd3, 0x3dea5d16,
+ 0x3def8e52, 0x3df4d091, 0x3dfa23e5, 0x3dff885e, 0x3e027f06, 0x3e05427f,
+ 0x3e080ea2, 0x3e0ae376, 0x3e0dc104, 0x3e10a752, 0x3e139669, 0x3e168e50,
+ 0x3e198f0e, 0x3e1c98ab, 0x3e1fab2e, 0x3e22c6a0, 0x3e25eb08, 0x3e29186a,
+ 0x3e2c4ed0, 0x3e2f8e42, 0x3e32d6c4, 0x3e362861, 0x3e39831e, 0x3e3ce702,
+ 0x3e405416, 0x3e43ca5e, 0x3e4749e4, 0x3e4ad2ae, 0x3e4e64c2, 0x3e520027,
+ 0x3e55a4e6, 0x3e595303, 0x3e5d0a8a, 0x3e60cb7c, 0x3e6495e0, 0x3e6869bf,
+ 0x3e6c4720, 0x3e702e08, 0x3e741e7f, 0x3e78188c, 0x3e7c1c34, 0x3e8014c0,
+ 0x3e822039, 0x3e84308b, 0x3e8645b8, 0x3e885fc3, 0x3e8a7eb0, 0x3e8ca281,
+ 0x3e8ecb3a, 0x3e90f8df, 0x3e932b72, 0x3e9562f6, 0x3e979f6f, 0x3e99e0e0,
+ 0x3e9c274e, 0x3e9e72b8, 0x3ea0c322, 0x3ea31892, 0x3ea57308, 0x3ea7d28a,
+ 0x3eaa3718, 0x3eaca0b7, 0x3eaf0f69, 0x3eb18332, 0x3eb3fc16, 0x3eb67a15,
+ 0x3eb8fd34, 0x3ebb8576, 0x3ebe12de, 0x3ec0a56e, 0x3ec33d2a, 0x3ec5da14,
+ 0x3ec87c30, 0x3ecb2380, 0x3ecdd008, 0x3ed081ca, 0x3ed338c9, 0x3ed5f508,
+ 0x3ed8b68a, 0x3edb7d52, 0x3ede4962, 0x3ee11abe, 0x3ee3f168, 0x3ee6cd64,
+ 0x3ee9aeb6, 0x3eec955d, 0x3eef815d, 0x3ef272ba, 0x3ef56976, 0x3ef86594,
+ 0x3efb6717, 0x3efe6e02, 0x3f00bd2b, 0x3f02460c, 0x3f03d1a5, 0x3f055ff8,
+ 0x3f06f105, 0x3f0884ce, 0x3f0a1b54, 0x3f0bb499, 0x3f0d509f, 0x3f0eef65,
+ 0x3f1090ef, 0x3f12353c, 0x3f13dc50, 0x3f15862a, 0x3f1732cc, 0x3f18e237,
+ 0x3f1a946d, 0x3f1c4970, 0x3f1e013f, 0x3f1fbbde, 0x3f21794c, 0x3f23398c,
+ 0x3f24fca0, 0x3f26c286, 0x3f288b42, 0x3f2a56d3, 0x3f2c253d, 0x3f2df680,
+ 0x3f2fca9d, 0x3f31a195, 0x3f337b6a, 0x3f35581e, 0x3f3737b1, 0x3f391a24,
+ 0x3f3aff7a, 0x3f3ce7b2, 0x3f3ed2d0, 0x3f40c0d2, 0x3f42b1bc, 0x3f44a58e,
+ 0x3f469c49, 0x3f4895ee, 0x3f4a9280, 0x3f4c91ff, 0x3f4e946c, 0x3f5099c8,
+ 0x3f52a216, 0x3f54ad55, 0x3f56bb88, 0x3f58ccae, 0x3f5ae0cb, 0x3f5cf7de,
+ 0x3f5f11ec, 0x3f612ef0, 0x3f634eef, 0x3f6571ea, 0x3f6797e1, 0x3f69c0d6,
+ 0x3f6beccb, 0x3f6e1bc0, 0x3f704db6, 0x3f7282af, 0x3f74baac, 0x3f76f5ae,
+ 0x3f7933b6, 0x3f7b74c6, 0x3f7db8de, 0x3f800000
+};
+
+static const float * const to_linear = (const float *)to_linear_u;
+
+static uint8_t
+to_srgb (float f)
+{
+ uint8_t low = 0;
+ uint8_t high = 255;
+
+ while (high - low > 1)
+ {
+ uint8_t mid = (low + high) / 2;
+
+ if (to_linear[mid] > f)
+ high = mid;
+ else
+ low = mid;
+ }
+
+ if (to_linear[high] - f < f - to_linear[low])
+ return high;
+ else
+ return low;
+}
-/* Expects a uint64_t buffer */
static void
-fetch_scanline_a2r10g10b10 (pixman_image_t *image,
- int x,
- int y,
- int width,
- uint32_t * b,
- const uint32_t *mask)
+fetch_scanline_a8r8g8b8_sRGB_float (pixman_image_t *image,
+ int x,
+ int y,
+ int width,
+ uint32_t * b,
+ const uint32_t *mask)
{
const uint32_t *bits = image->bits.bits + y * image->bits.rowstride;
const uint32_t *pixel = bits + x;
const uint32_t *end = pixel + width;
- uint64_t *buffer = (uint64_t *)b;
+ argb_t *buffer = (argb_t *)b;
+
+ while (pixel < end)
+ {
+ uint32_t p = READ (image, pixel++);
+ argb_t *argb = buffer;
+
+ argb->a = pixman_unorm_to_float ((p >> 24) & 0xff, 8);
+
+ argb->r = to_linear [(p >> 16) & 0xff];
+ argb->g = to_linear [(p >> 8) & 0xff];
+ argb->b = to_linear [(p >> 0) & 0xff];
+
+ buffer++;
+ }
+}
+
+/* Expects a float buffer */
+static void
+fetch_scanline_a2r10g10b10_float (pixman_image_t *image,
+ int x,
+ int y,
+ int width,
+ uint32_t * b,
+ const uint32_t *mask)
+{
+ const uint32_t *bits = image->bits.bits + y * image->bits.rowstride;
+ const uint32_t *pixel = bits + x;
+ const uint32_t *end = pixel + width;
+ argb_t *buffer = (argb_t *)b;
while (pixel < end)
{
@@ -529,62 +632,59 @@ fetch_scanline_a2r10g10b10 (pixman_image_t *image,
uint64_t g = (p >> 10) & 0x3ff;
uint64_t b = p & 0x3ff;
- r = r << 6 | r >> 4;
- g = g << 6 | g >> 4;
- b = b << 6 | b >> 4;
-
- a <<= 14;
- a |= a >> 2;
- a |= a >> 4;
- a |= a >> 8;
+ buffer->a = pixman_unorm_to_float (a, 2);
+ buffer->r = pixman_unorm_to_float (r, 10);
+ buffer->g = pixman_unorm_to_float (g, 10);
+ buffer->b = pixman_unorm_to_float (b, 10);
- *buffer++ = a << 48 | r << 32 | g << 16 | b;
+ buffer++;
}
}
-/* Expects a uint64_t buffer */
+/* Expects a float buffer */
static void
-fetch_scanline_x2r10g10b10 (pixman_image_t *image,
- int x,
- int y,
- int width,
- uint32_t * b,
- const uint32_t *mask)
+fetch_scanline_x2r10g10b10_float (pixman_image_t *image,
+ int x,
+ int y,
+ int width,
+ uint32_t * b,
+ const uint32_t *mask)
{
const uint32_t *bits = image->bits.bits + y * image->bits.rowstride;
const uint32_t *pixel = (uint32_t *)bits + x;
const uint32_t *end = pixel + width;
- uint64_t *buffer = (uint64_t *)b;
-
+ argb_t *buffer = (argb_t *)b;
+
while (pixel < end)
{
uint32_t p = READ (image, pixel++);
uint64_t r = (p >> 20) & 0x3ff;
uint64_t g = (p >> 10) & 0x3ff;
uint64_t b = p & 0x3ff;
-
- r = r << 6 | r >> 4;
- g = g << 6 | g >> 4;
- b = b << 6 | b >> 4;
-
- *buffer++ = 0xffffULL << 48 | r << 32 | g << 16 | b;
+
+ buffer->a = 1.0;
+ buffer->r = pixman_unorm_to_float (r, 10);
+ buffer->g = pixman_unorm_to_float (g, 10);
+ buffer->b = pixman_unorm_to_float (b, 10);
+
+ buffer++;
}
}
-/* Expects a uint64_t buffer */
+/* Expects a float buffer */
static void
-fetch_scanline_a2b10g10r10 (pixman_image_t *image,
- int x,
- int y,
- int width,
- uint32_t * b,
- const uint32_t *mask)
+fetch_scanline_a2b10g10r10_float (pixman_image_t *image,
+ int x,
+ int y,
+ int width,
+ uint32_t * b,
+ const uint32_t *mask)
{
const uint32_t *bits = image->bits.bits + y * image->bits.rowstride;
const uint32_t *pixel = bits + x;
const uint32_t *end = pixel + width;
- uint64_t *buffer = (uint64_t *)b;
-
+ argb_t *buffer = (argb_t *)b;
+
while (pixel < end)
{
uint32_t p = READ (image, pixel++);
@@ -592,46 +692,43 @@ fetch_scanline_a2b10g10r10 (pixman_image_t *image,
uint64_t b = (p >> 20) & 0x3ff;
uint64_t g = (p >> 10) & 0x3ff;
uint64_t r = p & 0x3ff;
-
- r = r << 6 | r >> 4;
- g = g << 6 | g >> 4;
- b = b << 6 | b >> 4;
-
- a <<= 14;
- a |= a >> 2;
- a |= a >> 4;
- a |= a >> 8;
- *buffer++ = a << 48 | r << 32 | g << 16 | b;
+ buffer->a = pixman_unorm_to_float (a, 2);
+ buffer->r = pixman_unorm_to_float (r, 10);
+ buffer->g = pixman_unorm_to_float (g, 10);
+ buffer->b = pixman_unorm_to_float (b, 10);
+
+ buffer++;
}
}
-/* Expects a uint64_t buffer */
+/* Expects a float buffer */
static void
-fetch_scanline_x2b10g10r10 (pixman_image_t *image,
- int x,
- int y,
- int width,
- uint32_t * b,
- const uint32_t *mask)
+fetch_scanline_x2b10g10r10_float (pixman_image_t *image,
+ int x,
+ int y,
+ int width,
+ uint32_t * b,
+ const uint32_t *mask)
{
const uint32_t *bits = image->bits.bits + y * image->bits.rowstride;
const uint32_t *pixel = (uint32_t *)bits + x;
const uint32_t *end = pixel + width;
- uint64_t *buffer = (uint64_t *)b;
-
+ argb_t *buffer = (argb_t *)b;
+
while (pixel < end)
{
uint32_t p = READ (image, pixel++);
uint64_t b = (p >> 20) & 0x3ff;
uint64_t g = (p >> 10) & 0x3ff;
uint64_t r = p & 0x3ff;
-
- r = r << 6 | r >> 4;
- g = g << 6 | g >> 4;
- b = b << 6 | b >> 4;
-
- *buffer++ = 0xffffULL << 48 | r << 32 | g << 16 | b;
+
+ buffer->a = 1.0;
+ buffer->r = pixman_unorm_to_float (r, 10);
+ buffer->g = pixman_unorm_to_float (g, 10);
+ buffer->b = pixman_unorm_to_float (b, 10);
+
+ buffer++;
}
}
@@ -708,55 +805,51 @@ fetch_scanline_yv12 (pixman_image_t *image,
/**************************** Pixel wise fetching *****************************/
-/* Despite the type, expects a uint64_t buffer */
-static uint64_t
-fetch_pixel_a2r10g10b10 (bits_image_t *image,
- int offset,
- int line)
+static argb_t
+fetch_pixel_x2r10g10b10_float (bits_image_t *image,
+ int offset,
+ int line)
{
uint32_t *bits = image->bits + line * image->rowstride;
uint32_t p = READ (image, bits + offset);
- uint64_t a = p >> 30;
uint64_t r = (p >> 20) & 0x3ff;
uint64_t g = (p >> 10) & 0x3ff;
uint64_t b = p & 0x3ff;
+ argb_t argb;
- r = r << 6 | r >> 4;
- g = g << 6 | g >> 4;
- b = b << 6 | b >> 4;
+ argb.a = 1.0;
+ argb.r = pixman_unorm_to_float (r, 10);
+ argb.g = pixman_unorm_to_float (g, 10);
+ argb.b = pixman_unorm_to_float (b, 10);
- a <<= 14;
- a |= a >> 2;
- a |= a >> 4;
- a |= a >> 8;
-
- return a << 48 | r << 32 | g << 16 | b;
+ return argb;
}
-/* Despite the type, this function expects a uint64_t buffer */
-static uint64_t
-fetch_pixel_x2r10g10b10 (bits_image_t *image,
- int offset,
- int line)
+static argb_t
+fetch_pixel_a2r10g10b10_float (bits_image_t *image,
+ int offset,
+ int line)
{
uint32_t *bits = image->bits + line * image->rowstride;
uint32_t p = READ (image, bits + offset);
+ uint64_t a = p >> 30;
uint64_t r = (p >> 20) & 0x3ff;
uint64_t g = (p >> 10) & 0x3ff;
uint64_t b = p & 0x3ff;
-
- r = r << 6 | r >> 4;
- g = g << 6 | g >> 4;
- b = b << 6 | b >> 4;
-
- return 0xffffULL << 48 | r << 32 | g << 16 | b;
+ argb_t argb;
+
+ argb.a = pixman_unorm_to_float (a, 2);
+ argb.r = pixman_unorm_to_float (r, 10);
+ argb.g = pixman_unorm_to_float (g, 10);
+ argb.b = pixman_unorm_to_float (b, 10);
+
+ return argb;
}
-/* Despite the type, expects a uint64_t buffer */
-static uint64_t
-fetch_pixel_a2b10g10r10 (bits_image_t *image,
- int offset,
- int line)
+static argb_t
+fetch_pixel_a2b10g10r10_float (bits_image_t *image,
+ int offset,
+ int line)
{
uint32_t *bits = image->bits + line * image->rowstride;
uint32_t p = READ (image, bits + offset);
@@ -764,36 +857,52 @@ fetch_pixel_a2b10g10r10 (bits_image_t *image,
uint64_t b = (p >> 20) & 0x3ff;
uint64_t g = (p >> 10) & 0x3ff;
uint64_t r = p & 0x3ff;
-
- r = r << 6 | r >> 4;
- g = g << 6 | g >> 4;
- b = b << 6 | b >> 4;
-
- a <<= 14;
- a |= a >> 2;
- a |= a >> 4;
- a |= a >> 8;
-
- return a << 48 | r << 32 | g << 16 | b;
+ argb_t argb;
+
+ argb.a = pixman_unorm_to_float (a, 2);
+ argb.r = pixman_unorm_to_float (r, 10);
+ argb.g = pixman_unorm_to_float (g, 10);
+ argb.b = pixman_unorm_to_float (b, 10);
+
+ return argb;
}
-/* Despite the type, this function expects a uint64_t buffer */
-static uint64_t
-fetch_pixel_x2b10g10r10 (bits_image_t *image,
- int offset,
- int line)
+static argb_t
+fetch_pixel_x2b10g10r10_float (bits_image_t *image,
+ int offset,
+ int line)
{
uint32_t *bits = image->bits + line * image->rowstride;
uint32_t p = READ (image, bits + offset);
uint64_t b = (p >> 20) & 0x3ff;
uint64_t g = (p >> 10) & 0x3ff;
uint64_t r = p & 0x3ff;
-
- r = r << 6 | r >> 4;
- g = g << 6 | g >> 4;
- b = b << 6 | b >> 4;
-
- return 0xffffULL << 48 | r << 32 | g << 16 | b;
+ argb_t argb;
+
+ argb.a = 1.0;
+ argb.r = pixman_unorm_to_float (r, 10);
+ argb.g = pixman_unorm_to_float (g, 10);
+ argb.b = pixman_unorm_to_float (b, 10);
+
+ return argb;
+}
+
+static argb_t
+fetch_pixel_a8r8g8b8_sRGB_float (bits_image_t *image,
+ int offset,
+ int line)
+{
+ uint32_t *bits = image->bits + line * image->rowstride;
+ uint32_t p = READ (image, bits + offset);
+ argb_t argb;
+
+ argb.a = pixman_unorm_to_float ((p >> 24) & 0xff, 8);
+
+ argb.r = to_linear [(p >> 16) & 0xff];
+ argb.g = to_linear [(p >> 8) & 0xff];
+ argb.b = to_linear [(p >> 0) & 0xff];
+
+ return argb;
}
static uint32_t
@@ -854,178 +963,174 @@ fetch_pixel_yv12 (bits_image_t *image,
/*********************************** Store ************************************/
static void
-store_scanline_a2r10g10b10 (bits_image_t * image,
- int x,
- int y,
- int width,
- const uint32_t *v)
+store_scanline_a2r10g10b10_float (bits_image_t * image,
+ int x,
+ int y,
+ int width,
+ const uint32_t *v)
{
uint32_t *bits = image->bits + image->rowstride * y;
uint32_t *pixel = bits + x;
- uint64_t *values = (uint64_t *)v;
+ argb_t *values = (argb_t *)v;
int i;
-
+
for (i = 0; i < width; ++i)
{
+ uint16_t a, r, g, b;
+
+ a = pixman_float_to_unorm (values[i].a, 2);
+ r = pixman_float_to_unorm (values[i].r, 10);
+ g = pixman_float_to_unorm (values[i].g, 10);
+ b = pixman_float_to_unorm (values[i].b, 10);
+
WRITE (image, pixel++,
- ((values[i] >> 32) & 0xc0000000) |
- ((values[i] >> 18) & 0x3ff00000) |
- ((values[i] >> 12) & 0xffc00) |
- ((values[i] >> 6) & 0x3ff));
+ (a << 30) | (r << 20) | (g << 10) | b);
}
}
static void
-store_scanline_x2r10g10b10 (bits_image_t * image,
- int x,
- int y,
- int width,
- const uint32_t *v)
+store_scanline_x2r10g10b10_float (bits_image_t * image,
+ int x,
+ int y,
+ int width,
+ const uint32_t *v)
{
uint32_t *bits = image->bits + image->rowstride * y;
- uint64_t *values = (uint64_t *)v;
uint32_t *pixel = bits + x;
+ argb_t *values = (argb_t *)v;
int i;
-
+
for (i = 0; i < width; ++i)
{
+ uint16_t r, g, b;
+
+ r = pixman_float_to_unorm (values[i].r, 10);
+ g = pixman_float_to_unorm (values[i].g, 10);
+ b = pixman_float_to_unorm (values[i].b, 10);
+
WRITE (image, pixel++,
- ((values[i] >> 18) & 0x3ff00000) |
- ((values[i] >> 12) & 0xffc00) |
- ((values[i] >> 6) & 0x3ff));
+ (r << 20) | (g << 10) | b);
}
}
static void
-store_scanline_a2b10g10r10 (bits_image_t * image,
- int x,
- int y,
- int width,
- const uint32_t *v)
+store_scanline_a2b10g10r10_float (bits_image_t * image,
+ int x,
+ int y,
+ int width,
+ const uint32_t *v)
{
uint32_t *bits = image->bits + image->rowstride * y;
uint32_t *pixel = bits + x;
- uint64_t *values = (uint64_t *)v;
+ argb_t *values = (argb_t *)v;
int i;
-
+
for (i = 0; i < width; ++i)
{
+ uint16_t a, r, g, b;
+
+ a = pixman_float_to_unorm (values[i].a, 2);
+ r = pixman_float_to_unorm (values[i].r, 10);
+ g = pixman_float_to_unorm (values[i].g, 10);
+ b = pixman_float_to_unorm (values[i].b, 10);
+
WRITE (image, pixel++,
- ((values[i] >> 32) & 0xc0000000) |
- ((values[i] >> 38) & 0x3ff) |
- ((values[i] >> 12) & 0xffc00) |
- ((values[i] << 14) & 0x3ff00000));
+ (a << 30) | (b << 20) | (g << 10) | r);
}
}
static void
-store_scanline_x2b10g10r10 (bits_image_t * image,
- int x,
- int y,
- int width,
- const uint32_t *v)
+store_scanline_x2b10g10r10_float (bits_image_t * image,
+ int x,
+ int y,
+ int width,
+ const uint32_t *v)
{
uint32_t *bits = image->bits + image->rowstride * y;
- uint64_t *values = (uint64_t *)v;
uint32_t *pixel = bits + x;
+ argb_t *values = (argb_t *)v;
int i;
-
+
+ for (i = 0; i < width; ++i)
+ {
+ uint16_t r, g, b;
+
+ r = pixman_float_to_unorm (values[i].r, 10);
+ g = pixman_float_to_unorm (values[i].g, 10);
+ b = pixman_float_to_unorm (values[i].b, 10);
+
+ WRITE (image, pixel++,
+ (b << 20) | (g << 10) | r);
+ }
+}
+
+static void
+store_scanline_a8r8g8b8_sRGB_float (bits_image_t * image,
+ int x,
+ int y,
+ int width,
+ const uint32_t *v)
+{
+ uint32_t *bits = image->bits + image->rowstride * y;
+ uint32_t *pixel = bits + x;
+ argb_t *values = (argb_t *)v;
+ int i;
+
for (i = 0; i < width; ++i)
{
+ uint8_t a, r, g, b;
+
+ a = pixman_float_to_unorm (values[i].a, 8);
+ r = to_srgb (values[i].r);
+ g = to_srgb (values[i].g);
+ b = to_srgb (values[i].b);
+
WRITE (image, pixel++,
- ((values[i] >> 38) & 0x3ff) |
- ((values[i] >> 12) & 0xffc00) |
- ((values[i] << 14) & 0x3ff00000));
+ (a << 24) | (r << 16) | (g << 8) | b);
}
}
/*
- * Contracts a 64bpp image to 32bpp and then stores it using a regular 32-bit
- * store proc. Despite the type, this function expects a uint64_t buffer.
+ * Contracts a floating point image to 32bpp and then stores it using a
+ * regular 32-bit store proc. Despite the type, this function expects an
+ * argb_t buffer.
*/
static void
-store_scanline_generic_64 (bits_image_t * image,
- int x,
- int y,
- int width,
- const uint32_t *values)
+store_scanline_generic_float (bits_image_t * image,
+ int x,
+ int y,
+ int width,
+ const uint32_t *values)
{
uint32_t *argb8_pixels;
-
+
assert (image->common.type == BITS);
-
+
argb8_pixels = pixman_malloc_ab (width, sizeof(uint32_t));
if (!argb8_pixels)
return;
-
+
/* Contract the scanline. We could do this in place if values weren't
* const.
*/
- pixman_contract (argb8_pixels, (uint64_t *)values, width);
-
+ pixman_contract_from_float (argb8_pixels, (argb_t *)values, width);
+
image->store_scanline_32 (image, x, y, width, argb8_pixels);
-
+
free (argb8_pixels);
}
-/* Despite the type, this function expects both buffer
- * and mask to be uint64_t
- */
static void
-fetch_scanline_generic_64 (pixman_image_t *image,
- int x,
- int y,
- int width,
- uint32_t * buffer,
- const uint32_t *mask)
+fetch_scanline_generic_float (pixman_image_t *image,
+ int x,
+ int y,
+ int width,
+ uint32_t * buffer,
+ const uint32_t *mask)
{
- pixman_format_code_t format;
-
- /* Fetch the pixels into the first half of buffer and then expand them in
- * place.
- */
image->bits.fetch_scanline_32 (image, x, y, width, buffer, NULL);
- format = image->bits.format;
- if (PIXMAN_FORMAT_TYPE (format) == PIXMAN_TYPE_COLOR ||
- PIXMAN_FORMAT_TYPE (format) == PIXMAN_TYPE_GRAY)
- {
- /* Indexed formats are mapped to a8r8g8b8 with full
- * precision, so when expanding we shouldn't correct
- * for the width of the channels
- */
-
- format = PIXMAN_a8r8g8b8;
- }
-
- pixman_expand ((uint64_t *)buffer, buffer, format, width);
-}
-
-/* Despite the type, this function expects a uint64_t *buffer */
-static uint64_t
-fetch_pixel_generic_64 (bits_image_t *image,
- int offset,
- int line)
-{
- uint32_t pixel32 = image->fetch_pixel_32 (image, offset, line);
- uint64_t result;
- pixman_format_code_t format;
-
- format = image->format;
- if (PIXMAN_FORMAT_TYPE (format) == PIXMAN_TYPE_COLOR ||
- PIXMAN_FORMAT_TYPE (format) == PIXMAN_TYPE_GRAY)
- {
- /* Indexed formats are mapped to a8r8g8b8 with full
- * precision, so when expanding we shouldn't correct
- * for the width of the channels
- */
-
- format = PIXMAN_a8r8g8b8;
- }
-
- pixman_expand ((uint64_t *)&result, &pixel32, format, 1);
-
- return result;
+ pixman_expand_to_float ((argb_t *)buffer, buffer, image->bits.format, width);
}
/* The 32_sRGB paths should be deleted after narrow processing
@@ -1046,35 +1151,20 @@ fetch_scanline_a8r8g8b8_32_sRGB (pixman_image_t *image,
while (pixel < end)
{
- tmp = READ (image, pixel++);
- *buffer++ = (tmp >> 24) << 24
- | (srgb_to_linear[(tmp >> 16) & 0xff] >> 8) << 16
- | (srgb_to_linear[(tmp >> 8) & 0xff] >> 8) << 8
- | (srgb_to_linear[(tmp >> 0) & 0xff] >> 8) << 0;
- }
-}
+ uint8_t a, r, g, b;
-static void
-fetch_scanline_a8r8g8b8_64_sRGB (pixman_image_t *image,
- int x,
- int y,
- int width,
- uint32_t *b,
- const uint32_t *mask)
-{
- const uint32_t *bits = image->bits.bits + y * image->bits.rowstride;
- const uint32_t *pixel = (uint32_t *)bits + x;
- const uint32_t *end = pixel + width;
- uint64_t *buffer = (uint64_t *)b;
- uint32_t tmp;
-
- while (pixel < end)
- {
tmp = READ (image, pixel++);
- *buffer++ = (uint64_t) ((tmp >> 24) * 257) << 48
- | (uint64_t) srgb_to_linear[(tmp >> 16) & 0xff] << 32
- | (uint64_t) srgb_to_linear[(tmp >> 8) & 0xff] << 16
- | (uint64_t) srgb_to_linear[(tmp >> 0) & 0xff] << 0;
+
+ a = (tmp >> 24) & 0xff;
+ r = (tmp >> 16) & 0xff;
+ g = (tmp >> 8) & 0xff;
+ b = (tmp >> 0) & 0xff;
+
+ r = to_linear[r] * 255.0f + 0.5f;
+ g = to_linear[g] * 255.0f + 0.5f;
+ b = to_linear[b] * 255.0f + 0.5f;
+
+ *buffer++ = (a << 24) | (r << 16) | (g << 8) | (b << 0);
}
}
@@ -1085,23 +1175,18 @@ fetch_pixel_a8r8g8b8_32_sRGB (bits_image_t *image,
{
uint32_t *bits = image->bits + line * image->rowstride;
uint32_t tmp = READ (image, bits + offset);
- return (tmp >> 24) << 24
- | (srgb_to_linear[(tmp >> 16) & 0xff] >> 8) << 16
- | (srgb_to_linear[(tmp >> 8) & 0xff] >> 8) << 8
- | (srgb_to_linear[(tmp >> 0) & 0xff] >> 8) << 0;
-}
+ uint8_t a, r, g, b;
-static uint64_t
-fetch_pixel_a8r8g8b8_64_sRGB (bits_image_t *image,
- int offset,
- int line)
-{
- uint32_t *bits = image->bits + line * image->rowstride;
- uint32_t tmp = READ (image, bits + offset);
- return (uint64_t) ((tmp >> 24) * 257) << 48
- | (uint64_t) srgb_to_linear[(tmp >> 16) & 0xff] << 32
- | (uint64_t) srgb_to_linear[(tmp >> 8) & 0xff] << 16
- | (uint64_t) srgb_to_linear[(tmp >> 0) & 0xff] << 0;
+ a = (tmp >> 24) & 0xff;
+ r = (tmp >> 16) & 0xff;
+ g = (tmp >> 8) & 0xff;
+ b = (tmp >> 0) & 0xff;
+
+ r = to_linear[r] * 255.0f + 0.5f;
+ g = to_linear[g] * 255.0f + 0.5f;
+ b = to_linear[b] * 255.0f + 0.5f;
+
+ return (a << 24) | (r << 16) | (g << 8) | (b << 0);
}
static void
@@ -1119,37 +1204,34 @@ store_scanline_a8r8g8b8_32_sRGB (bits_image_t *image,
for (i = 0; i < width; ++i)
{
+ uint8_t a, r, g, b;
+
tmp = values[i];
- WRITE (image, pixel++,
- ((uint32_t) (tmp >> 24 ) << 24)
- | (linear_to_srgb[(tmp >> 16 << 4) & 0xfff] << 16)
- | (linear_to_srgb[(tmp >> 8 << 4) & 0xfff] << 8)
- | (linear_to_srgb[(tmp >> 0 << 4) & 0xfff] << 0));
+
+ a = (tmp >> 24) & 0xff;
+ r = (tmp >> 16) & 0xff;
+ g = (tmp >> 8) & 0xff;
+ b = (tmp >> 0) & 0xff;
+
+ r = to_srgb (r * (1/255.0f));
+ g = to_srgb (g * (1/255.0f));
+ b = to_srgb (b * (1/255.0f));
+
+ WRITE (image, pixel++, a | (r << 16) | (g << 8) | (b << 0));
}
}
-static void
-store_scanline_a8r8g8b8_64_sRGB (bits_image_t *image,
- int x,
- int y,
- int width,
- const uint32_t *v)
+static argb_t
+fetch_pixel_generic_float (bits_image_t *image,
+ int offset,
+ int line)
{
- uint32_t *bits = image->bits + image->rowstride * y;
- uint64_t *values = (uint64_t *)v;
- uint32_t *pixel = bits + x;
- uint64_t tmp;
- int i;
-
- for (i = 0; i < width; ++i)
- {
- tmp = values[i];
- WRITE (image, pixel++,
- ((uint32_t) (tmp >> 56) << 24)
- | (linear_to_srgb[(tmp >> 36) & 0xfff] << 16)
- | (linear_to_srgb[(tmp >> 20) & 0xfff] << 8)
- | (linear_to_srgb[(tmp >> 4) & 0xfff] << 0));
- }
+ uint32_t pixel32 = image->fetch_pixel_32 (image, offset, line);
+ argb_t f;
+
+ pixman_expand_to_float (&f, &pixel32, image->format, 1);
+
+ return f;
}
/*
@@ -1163,10 +1245,10 @@ fetch_pixel_generic_lossy_32 (bits_image_t *image,
int offset,
int line)
{
- uint64_t pixel64 = image->fetch_pixel_64 (image, offset, line);
+ argb_t pixel64 = image->fetch_pixel_float (image, offset, line);
uint32_t result;
- pixman_contract (&result, &pixel64, 1);
+ pixman_contract_from_float (&result, &pixel64, 1);
return result;
}
@@ -1175,20 +1257,22 @@ typedef struct
{
pixman_format_code_t format;
fetch_scanline_t fetch_scanline_32;
- fetch_scanline_t fetch_scanline_64;
+ fetch_scanline_t fetch_scanline_float;
fetch_pixel_32_t fetch_pixel_32;
- fetch_pixel_64_t fetch_pixel_64;
+ fetch_pixel_float_t fetch_pixel_float;
store_scanline_t store_scanline_32;
- store_scanline_t store_scanline_64;
+ store_scanline_t store_scanline_float;
} format_info_t;
#define FORMAT_INFO(format) \
{ \
PIXMAN_ ## format, \
fetch_scanline_ ## format, \
- fetch_scanline_generic_64, \
- fetch_pixel_ ## format, fetch_pixel_generic_64, \
- store_scanline_ ## format, store_scanline_generic_64 \
+ fetch_scanline_generic_float, \
+ fetch_pixel_ ## format, \
+ fetch_pixel_generic_float, \
+ store_scanline_ ## format, \
+ store_scanline_generic_float \
}
static const format_info_t accessors[] =
@@ -1206,10 +1290,10 @@ static const format_info_t accessors[] =
/* sRGB formats */
{ PIXMAN_a8r8g8b8_sRGB,
- fetch_scanline_a8r8g8b8_32_sRGB,
- fetch_scanline_a8r8g8b8_64_sRGB,
- fetch_pixel_a8r8g8b8_32_sRGB, fetch_pixel_a8r8g8b8_64_sRGB,
- store_scanline_a8r8g8b8_32_sRGB, store_scanline_a8r8g8b8_64_sRGB },
+ fetch_scanline_a8r8g8b8_32_sRGB, fetch_scanline_a8r8g8b8_sRGB_float,
+ fetch_pixel_a8r8g8b8_32_sRGB, fetch_pixel_a8r8g8b8_sRGB_float,
+ store_scanline_a8r8g8b8_32_sRGB, store_scanline_a8r8g8b8_sRGB_float,
+ },
/* 24bpp formats */
FORMAT_INFO (r8g8b8),
@@ -1269,34 +1353,34 @@ static const format_info_t accessors[] =
/* Wide formats */
{ PIXMAN_a2r10g10b10,
- NULL, fetch_scanline_a2r10g10b10,
- fetch_pixel_generic_lossy_32, fetch_pixel_a2r10g10b10,
- NULL, store_scanline_a2r10g10b10 },
-
+ NULL, fetch_scanline_a2r10g10b10_float,
+ fetch_pixel_generic_lossy_32, fetch_pixel_a2r10g10b10_float,
+ NULL, store_scanline_a2r10g10b10_float },
+
{ PIXMAN_x2r10g10b10,
- NULL, fetch_scanline_x2r10g10b10,
- fetch_pixel_generic_lossy_32, fetch_pixel_x2r10g10b10,
- NULL, store_scanline_x2r10g10b10 },
-
+ NULL, fetch_scanline_x2r10g10b10_float,
+ fetch_pixel_generic_lossy_32, fetch_pixel_x2r10g10b10_float,
+ NULL, store_scanline_x2r10g10b10_float },
+
{ PIXMAN_a2b10g10r10,
- NULL, fetch_scanline_a2b10g10r10,
- fetch_pixel_generic_lossy_32, fetch_pixel_a2b10g10r10,
- NULL, store_scanline_a2b10g10r10 },
-
+ NULL, fetch_scanline_a2b10g10r10_float,
+ fetch_pixel_generic_lossy_32, fetch_pixel_a2b10g10r10_float,
+ NULL, store_scanline_a2b10g10r10_float },
+
{ PIXMAN_x2b10g10r10,
- NULL, fetch_scanline_x2b10g10r10,
- fetch_pixel_generic_lossy_32, fetch_pixel_x2b10g10r10,
- NULL, store_scanline_x2b10g10r10 },
-
+ NULL, fetch_scanline_x2b10g10r10_float,
+ fetch_pixel_generic_lossy_32, fetch_pixel_x2b10g10r10_float,
+ NULL, store_scanline_x2b10g10r10_float },
+
/* YUV formats */
{ PIXMAN_yuy2,
- fetch_scanline_yuy2, fetch_scanline_generic_64,
- fetch_pixel_yuy2, fetch_pixel_generic_64,
+ fetch_scanline_yuy2, fetch_scanline_generic_float,
+ fetch_pixel_yuy2, fetch_pixel_generic_float,
NULL, NULL },
-
+
{ PIXMAN_yv12,
- fetch_scanline_yv12, fetch_scanline_generic_64,
- fetch_pixel_yv12, fetch_pixel_generic_64,
+ fetch_scanline_yv12, fetch_scanline_generic_float,
+ fetch_pixel_yv12, fetch_pixel_generic_float,
NULL, NULL },
{ PIXMAN_null },
@@ -1312,11 +1396,11 @@ setup_accessors (bits_image_t *image)
if (info->format == image->format)
{
image->fetch_scanline_32 = info->fetch_scanline_32;
- image->fetch_scanline_64 = info->fetch_scanline_64;
+ image->fetch_scanline_float = info->fetch_scanline_float;
image->fetch_pixel_32 = info->fetch_pixel_32;
- image->fetch_pixel_64 = info->fetch_pixel_64;
+ image->fetch_pixel_float = info->fetch_pixel_float;
image->store_scanline_32 = info->store_scanline_32;
- image->store_scanline_64 = info->store_scanline_64;
+ image->store_scanline_float = info->store_scanline_float;
return;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-08-10 15:34:38 +0000