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Diffstat (limited to 'pixman/pixman/pixman-arm-simd.c')
-rw-r--r--pixman/pixman/pixman-arm-simd.c486
1 files changed, 486 insertions, 0 deletions
diff --git a/pixman/pixman/pixman-arm-simd.c b/pixman/pixman/pixman-arm-simd.c
new file mode 100644
index 000000000..fb7bf3da8
--- /dev/null
+++ b/pixman/pixman/pixman-arm-simd.c
@@ -0,0 +1,486 @@
+/*
+ * Copyright © 2008 Mozilla Corporation
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of Mozilla Corporation not be used in
+ * advertising or publicity pertaining to distribution of the software without
+ * specific, written prior permission. Mozilla Corporation makes no
+ * representations about the suitability of this software for any purpose. It
+ * is provided "as is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
+ * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
+ * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+ * SOFTWARE.
+ *
+ * Author: Jeff Muizelaar (jeff@infidigm.net)
+ *
+ */
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include "pixman-private.h"
+
+static void
+arm_composite_add_8000_8000 (pixman_implementation_t * impl,
+ pixman_op_t op,
+ pixman_image_t * src_image,
+ pixman_image_t * mask_image,
+ pixman_image_t * dst_image,
+ int32_t src_x,
+ int32_t src_y,
+ int32_t mask_x,
+ int32_t mask_y,
+ int32_t dest_x,
+ int32_t dest_y,
+ int32_t width,
+ int32_t height)
+{
+ uint8_t *dst_line, *dst;
+ uint8_t *src_line, *src;
+ int dst_stride, src_stride;
+ uint16_t w;
+ uint8_t s, d;
+
+ PIXMAN_IMAGE_GET_LINE (src_image, src_x, src_y, uint8_t, src_stride, src_line, 1);
+ PIXMAN_IMAGE_GET_LINE (dst_image, dest_x, dest_y, uint8_t, dst_stride, dst_line, 1);
+
+ while (height--)
+ {
+ dst = dst_line;
+ dst_line += dst_stride;
+ src = src_line;
+ src_line += src_stride;
+ w = width;
+
+ /* ensure both src and dst are properly aligned before doing 32 bit reads
+ * we'll stay in this loop if src and dst have differing alignments
+ */
+ while (w && (((unsigned long)dst & 3) || ((unsigned long)src & 3)))
+ {
+ s = *src;
+ d = *dst;
+ asm ("uqadd8 %0, %1, %2" : "+r" (d) : "r" (s));
+ *dst = d;
+
+ dst++;
+ src++;
+ w--;
+ }
+
+ while (w >= 4)
+ {
+ asm ("uqadd8 %0, %1, %2"
+ : "=r" (*(uint32_t*)dst)
+ : "r" (*(uint32_t*)src), "r" (*(uint32_t*)dst));
+ dst += 4;
+ src += 4;
+ w -= 4;
+ }
+
+ while (w)
+ {
+ s = *src;
+ d = *dst;
+ asm ("uqadd8 %0, %1, %2" : "+r" (d) : "r" (s));
+ *dst = d;
+
+ dst++;
+ src++;
+ w--;
+ }
+ }
+
+}
+
+static void
+arm_composite_over_8888_8888 (pixman_implementation_t * impl,
+ pixman_op_t op,
+ pixman_image_t * src_image,
+ pixman_image_t * mask_image,
+ pixman_image_t * dst_image,
+ int32_t src_x,
+ int32_t src_y,
+ int32_t mask_x,
+ int32_t mask_y,
+ int32_t dest_x,
+ int32_t dest_y,
+ int32_t width,
+ int32_t height)
+{
+ uint32_t *dst_line, *dst;
+ uint32_t *src_line, *src;
+ int dst_stride, src_stride;
+ uint16_t w;
+ uint32_t component_half = 0x800080;
+ uint32_t upper_component_mask = 0xff00ff00;
+ uint32_t alpha_mask = 0xff;
+
+ PIXMAN_IMAGE_GET_LINE (dst_image, dest_x, dest_y, uint32_t, dst_stride, dst_line, 1);
+ PIXMAN_IMAGE_GET_LINE (src_image, src_x, src_y, uint32_t, src_stride, src_line, 1);
+
+ while (height--)
+ {
+ dst = dst_line;
+ dst_line += dst_stride;
+ src = src_line;
+ src_line += src_stride;
+ w = width;
+
+/* #define inner_branch */
+ asm volatile (
+ "cmp %[w], #0\n\t"
+ "beq 2f\n\t"
+ "1:\n\t"
+ /* load src */
+ "ldr r5, [%[src]], #4\n\t"
+#ifdef inner_branch
+ /* We can avoid doing the multiplication in two cases: 0x0 or 0xff.
+ * The 0x0 case also allows us to avoid doing an unecessary data
+ * write which is more valuable so we only check for that
+ */
+ "cmp r5, #0\n\t"
+ "beq 3f\n\t"
+
+ /* = 255 - alpha */
+ "sub r8, %[alpha_mask], r5, lsr #24\n\t"
+
+ "ldr r4, [%[dest]] \n\t"
+
+#else
+ "ldr r4, [%[dest]] \n\t"
+
+ /* = 255 - alpha */
+ "sub r8, %[alpha_mask], r5, lsr #24\n\t"
+#endif
+ "uxtb16 r6, r4\n\t"
+ "uxtb16 r7, r4, ror #8\n\t"
+
+ /* multiply by 257 and divide by 65536 */
+ "mla r6, r6, r8, %[component_half]\n\t"
+ "mla r7, r7, r8, %[component_half]\n\t"
+
+ "uxtab16 r6, r6, r6, ror #8\n\t"
+ "uxtab16 r7, r7, r7, ror #8\n\t"
+
+ /* recombine the 0xff00ff00 bytes of r6 and r7 */
+ "and r7, r7, %[upper_component_mask]\n\t"
+ "uxtab16 r6, r7, r6, ror #8\n\t"
+
+ "uqadd8 r5, r6, r5\n\t"
+
+#ifdef inner_branch
+ "3:\n\t"
+
+#endif
+ "str r5, [%[dest]], #4\n\t"
+ /* increment counter and jmp to top */
+ "subs %[w], %[w], #1\n\t"
+ "bne 1b\n\t"
+ "2:\n\t"
+ : [w] "+r" (w), [dest] "+r" (dst), [src] "+r" (src)
+ : [component_half] "r" (component_half), [upper_component_mask] "r" (upper_component_mask),
+ [alpha_mask] "r" (alpha_mask)
+ : "r4", "r5", "r6", "r7", "r8", "cc", "memory"
+ );
+ }
+}
+
+static void
+arm_composite_over_8888_n_8888 (
+ pixman_implementation_t * impl,
+ pixman_op_t op,
+ pixman_image_t * src_image,
+ pixman_image_t * mask_image,
+ pixman_image_t * dst_image,
+ int32_t src_x,
+ int32_t src_y,
+ int32_t mask_x,
+ int32_t mask_y,
+ int32_t dest_x,
+ int32_t dest_y,
+ int32_t width,
+ int32_t height)
+{
+ uint32_t *dst_line, *dst;
+ uint32_t *src_line, *src;
+ uint32_t mask;
+ int dst_stride, src_stride;
+ uint16_t w;
+ uint32_t component_half = 0x800080;
+ uint32_t alpha_mask = 0xff;
+
+ PIXMAN_IMAGE_GET_LINE (dst_image, dest_x, dest_y, uint32_t, dst_stride, dst_line, 1);
+ PIXMAN_IMAGE_GET_LINE (src_image, src_x, src_y, uint32_t, src_stride, src_line, 1);
+
+ mask = _pixman_image_get_solid (mask_image, dst_image->bits.format);
+ mask = (mask) >> 24;
+
+ while (height--)
+ {
+ dst = dst_line;
+ dst_line += dst_stride;
+ src = src_line;
+ src_line += src_stride;
+ w = width;
+
+/* #define inner_branch */
+ asm volatile (
+ "cmp %[w], #0\n\t"
+ "beq 2f\n\t"
+ "1:\n\t"
+ /* load src */
+ "ldr r5, [%[src]], #4\n\t"
+#ifdef inner_branch
+ /* We can avoid doing the multiplication in two cases: 0x0 or 0xff.
+ * The 0x0 case also allows us to avoid doing an unecessary data
+ * write which is more valuable so we only check for that
+ */
+ "cmp r5, #0\n\t"
+ "beq 3f\n\t"
+
+#endif
+ "ldr r4, [%[dest]] \n\t"
+
+ "uxtb16 r6, r5\n\t"
+ "uxtb16 r7, r5, ror #8\n\t"
+
+ /* multiply by alpha (r8) then by 257 and divide by 65536 */
+ "mla r6, r6, %[mask_alpha], %[component_half]\n\t"
+ "mla r7, r7, %[mask_alpha], %[component_half]\n\t"
+
+ "uxtab16 r6, r6, r6, ror #8\n\t"
+ "uxtab16 r7, r7, r7, ror #8\n\t"
+
+ "uxtb16 r6, r6, ror #8\n\t"
+ "uxtb16 r7, r7, ror #8\n\t"
+
+ /* recombine */
+ "orr r5, r6, r7, lsl #8\n\t"
+
+ "uxtb16 r6, r4\n\t"
+ "uxtb16 r7, r4, ror #8\n\t"
+
+ /* 255 - alpha */
+ "sub r8, %[alpha_mask], r5, lsr #24\n\t"
+
+ /* multiply by alpha (r8) then by 257 and divide by 65536 */
+ "mla r6, r6, r8, %[component_half]\n\t"
+ "mla r7, r7, r8, %[component_half]\n\t"
+
+ "uxtab16 r6, r6, r6, ror #8\n\t"
+ "uxtab16 r7, r7, r7, ror #8\n\t"
+
+ "uxtb16 r6, r6, ror #8\n\t"
+ "uxtb16 r7, r7, ror #8\n\t"
+
+ /* recombine */
+ "orr r6, r6, r7, lsl #8\n\t"
+
+ "uqadd8 r5, r6, r5\n\t"
+
+#ifdef inner_branch
+ "3:\n\t"
+
+#endif
+ "str r5, [%[dest]], #4\n\t"
+ /* increment counter and jmp to top */
+ "subs %[w], %[w], #1\n\t"
+ "bne 1b\n\t"
+ "2:\n\t"
+ : [w] "+r" (w), [dest] "+r" (dst), [src] "+r" (src)
+ : [component_half] "r" (component_half), [mask_alpha] "r" (mask),
+ [alpha_mask] "r" (alpha_mask)
+ : "r4", "r5", "r6", "r7", "r8", "r9", "cc", "memory"
+ );
+ }
+}
+
+static void
+arm_composite_over_n_8_8888 (pixman_implementation_t * impl,
+ pixman_op_t op,
+ pixman_image_t * src_image,
+ pixman_image_t * mask_image,
+ pixman_image_t * dst_image,
+ int32_t src_x,
+ int32_t src_y,
+ int32_t mask_x,
+ int32_t mask_y,
+ int32_t dest_x,
+ int32_t dest_y,
+ int32_t width,
+ int32_t height)
+{
+ uint32_t src, srca;
+ uint32_t *dst_line, *dst;
+ uint8_t *mask_line, *mask;
+ int dst_stride, mask_stride;
+ uint16_t w;
+
+ src = _pixman_image_get_solid (src_image, dst_image->bits.format);
+
+ /* bail out if fully transparent */
+ srca = src >> 24;
+ if (src == 0)
+ return;
+
+ uint32_t component_mask = 0xff00ff;
+ uint32_t component_half = 0x800080;
+
+ uint32_t src_hi = (src >> 8) & component_mask;
+ uint32_t src_lo = src & component_mask;
+
+ PIXMAN_IMAGE_GET_LINE (dst_image, dest_x, dest_y, uint32_t, dst_stride, dst_line, 1);
+ PIXMAN_IMAGE_GET_LINE (mask_image, mask_x, mask_y, uint8_t, mask_stride, mask_line, 1);
+
+ while (height--)
+ {
+ dst = dst_line;
+ dst_line += dst_stride;
+ mask = mask_line;
+ mask_line += mask_stride;
+ w = width;
+
+/* #define inner_branch */
+ asm volatile (
+ "cmp %[w], #0\n\t"
+ "beq 2f\n\t"
+ "1:\n\t"
+ /* load mask */
+ "ldrb r5, [%[mask]], #1\n\t"
+#ifdef inner_branch
+ /* We can avoid doing the multiplication in two cases: 0x0 or 0xff.
+ * The 0x0 case also allows us to avoid doing an unecessary data
+ * write which is more valuable so we only check for that
+ */
+ "cmp r5, #0\n\t"
+ "beq 3f\n\t"
+
+#endif
+ "ldr r4, [%[dest]] \n\t"
+
+ /* multiply by alpha (r8) then by 257 and divide by 65536 */
+ "mla r6, %[src_lo], r5, %[component_half]\n\t"
+ "mla r7, %[src_hi], r5, %[component_half]\n\t"
+
+ "uxtab16 r6, r6, r6, ror #8\n\t"
+ "uxtab16 r7, r7, r7, ror #8\n\t"
+
+ "uxtb16 r6, r6, ror #8\n\t"
+ "uxtb16 r7, r7, ror #8\n\t"
+
+ /* recombine */
+ "orr r5, r6, r7, lsl #8\n\t"
+
+ "uxtb16 r6, r4\n\t"
+ "uxtb16 r7, r4, ror #8\n\t"
+
+ /* we could simplify this to use 'sub' if we were
+ * willing to give up a register for alpha_mask */
+ "mvn r8, r5\n\t"
+ "mov r8, r8, lsr #24\n\t"
+
+ /* multiply by alpha (r8) then by 257 and divide by 65536 */
+ "mla r6, r6, r8, %[component_half]\n\t"
+ "mla r7, r7, r8, %[component_half]\n\t"
+
+ "uxtab16 r6, r6, r6, ror #8\n\t"
+ "uxtab16 r7, r7, r7, ror #8\n\t"
+
+ "uxtb16 r6, r6, ror #8\n\t"
+ "uxtb16 r7, r7, ror #8\n\t"
+
+ /* recombine */
+ "orr r6, r6, r7, lsl #8\n\t"
+
+ "uqadd8 r5, r6, r5\n\t"
+
+#ifdef inner_branch
+ "3:\n\t"
+
+#endif
+ "str r5, [%[dest]], #4\n\t"
+ /* increment counter and jmp to top */
+ "subs %[w], %[w], #1\n\t"
+ "bne 1b\n\t"
+ "2:\n\t"
+ : [w] "+r" (w), [dest] "+r" (dst), [src] "+r" (src), [mask] "+r" (mask)
+ : [component_half] "r" (component_half),
+ [src_hi] "r" (src_hi), [src_lo] "r" (src_lo)
+ : "r4", "r5", "r6", "r7", "r8", "cc", "memory");
+ }
+}
+
+static const pixman_fast_path_t arm_simd_fast_path_array[] =
+{
+ { PIXMAN_OP_OVER, PIXMAN_a8r8g8b8, PIXMAN_null, PIXMAN_a8r8g8b8, arm_composite_over_8888_8888, 0 },
+ { PIXMAN_OP_OVER, PIXMAN_a8r8g8b8, PIXMAN_null, PIXMAN_x8r8g8b8, arm_composite_over_8888_8888, 0 },
+ { PIXMAN_OP_OVER, PIXMAN_a8b8g8r8, PIXMAN_null, PIXMAN_a8b8g8r8, arm_composite_over_8888_8888, 0 },
+ { PIXMAN_OP_OVER, PIXMAN_a8b8g8r8, PIXMAN_null, PIXMAN_x8b8g8r8, arm_composite_over_8888_8888, 0 },
+ { PIXMAN_OP_OVER, PIXMAN_a8r8g8b8, PIXMAN_a8, PIXMAN_a8r8g8b8, arm_composite_over_8888_n_8888, NEED_SOLID_MASK },
+ { PIXMAN_OP_OVER, PIXMAN_a8r8g8b8, PIXMAN_a8, PIXMAN_x8r8g8b8, arm_composite_over_8888_n_8888, NEED_SOLID_MASK },
+
+ { PIXMAN_OP_ADD, PIXMAN_a8, PIXMAN_null, PIXMAN_a8, arm_composite_add_8000_8000, 0 },
+
+ { PIXMAN_OP_OVER, PIXMAN_solid, PIXMAN_a8, PIXMAN_a8r8g8b8, arm_composite_over_n_8_8888, 0 },
+ { PIXMAN_OP_OVER, PIXMAN_solid, PIXMAN_a8, PIXMAN_x8r8g8b8, arm_composite_over_n_8_8888, 0 },
+ { PIXMAN_OP_OVER, PIXMAN_solid, PIXMAN_a8, PIXMAN_a8b8g8r8, arm_composite_over_n_8_8888, 0 },
+ { PIXMAN_OP_OVER, PIXMAN_solid, PIXMAN_a8, PIXMAN_x8b8g8r8, arm_composite_over_n_8_8888, 0 },
+
+ { PIXMAN_OP_NONE },
+};
+
+const pixman_fast_path_t *const arm_simd_fast_paths = arm_simd_fast_path_array;
+
+static void
+arm_simd_composite (pixman_implementation_t *imp,
+ pixman_op_t op,
+ pixman_image_t * src,
+ pixman_image_t * mask,
+ pixman_image_t * dest,
+ int32_t src_x,
+ int32_t src_y,
+ int32_t mask_x,
+ int32_t mask_y,
+ int32_t dest_x,
+ int32_t dest_y,
+ int32_t width,
+ int32_t height)
+{
+ if (_pixman_run_fast_path (arm_simd_fast_paths, imp,
+ op, src, mask, dest,
+ src_x, src_y,
+ mask_x, mask_y,
+ dest_x, dest_y,
+ width, height))
+ {
+ return;
+ }
+
+ _pixman_implementation_composite (imp->delegate, op,
+ src, mask, dest,
+ src_x, src_y,
+ mask_x, mask_y,
+ dest_x, dest_y,
+ width, height);
+}
+
+pixman_implementation_t *
+_pixman_implementation_create_arm_simd (void)
+{
+ pixman_implementation_t *general = _pixman_implementation_create_fast_path ();
+ pixman_implementation_t *imp = _pixman_implementation_create (general);
+
+ imp->composite = arm_simd_composite;
+
+ return imp;
+}
+
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