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95 lines
2.6 KiB
Diff
95 lines
2.6 KiB
Diff
From a913cc05a1a1c5a813cf06d248334edede9caab7 Mon Sep 17 00:00:00 2001
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From: Siarhei Siamashka <siarhei.siamashka@nokia.com>
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Date: Wed, 18 Nov 2009 06:08:48 +0200
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Subject: [PATCH 4/8] Support of overlapping src/dst for pixman_blt_neon
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---
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pixman/pixman-arm-neon.c | 62 +++++++++++++++++++++++++++++++++++++--------
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1 files changed, 51 insertions(+), 11 deletions(-)
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diff --git a/pixman/pixman-arm-neon.c b/pixman/pixman-arm-neon.c
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index be5d403..cbfd7cf 100644
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--- a/pixman/pixman-arm-neon.c
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+++ b/pixman/pixman-arm-neon.c
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@@ -176,26 +176,66 @@ pixman_blt_neon (uint32_t *src_bits,
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int width,
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int height)
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{
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- if (src_bpp != dst_bpp)
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+ uint8_t * src_bytes;
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+ uint8_t * dst_bytes;
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+ int bpp;
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+
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+ if (src_bpp != dst_bpp || src_bpp & 7)
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return FALSE;
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+ bpp = src_bpp >> 3;
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+ width *= bpp;
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+ src_stride *= 4;
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+ dst_stride *= 4;
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+ src_bytes = (uint8_t *)src_bits + src_y * src_stride + src_x * bpp;
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+ dst_bytes = (uint8_t *)dst_bits + dst_y * dst_stride + dst_x * bpp;
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+
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+ if (src_bpp != 16 && src_bpp != 32)
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+ {
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+ pixman_blt_helper (src_bytes, dst_bytes, src_stride, dst_stride,
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+ width, height);
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+ return TRUE;
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+ }
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+
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+ if (src_bytes < dst_bytes && src_bytes + src_stride * height > dst_bytes)
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+ {
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+ src_bytes += src_stride * height - src_stride;
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+ dst_bytes += dst_stride * height - dst_stride;
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+ dst_stride = -dst_stride;
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+ src_stride = -src_stride;
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+
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+ if (src_bytes + width > dst_bytes)
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+ {
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+ /* TODO: reverse scanline copy using NEON */
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+ while (--height >= 0)
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+ {
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+ memmove (dst_bytes, src_bytes, width);
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+ dst_bytes += dst_stride;
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+ src_bytes += src_stride;
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+ }
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+ return TRUE;
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+ }
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+ }
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+
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switch (src_bpp)
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{
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case 16:
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pixman_composite_src_0565_0565_asm_neon (
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- width, height,
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- (uint16_t *)(((char *) dst_bits) +
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- dst_y * dst_stride * 4 + dst_x * 2), dst_stride * 2,
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- (uint16_t *)(((char *) src_bits) +
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- src_y * src_stride * 4 + src_x * 2), src_stride * 2);
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+ width >> 1,
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+ height,
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+ (uint16_t *) dst_bytes,
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+ dst_stride >> 1,
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+ (uint16_t *) src_bytes,
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+ src_stride >> 1);
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return TRUE;
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case 32:
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pixman_composite_src_8888_8888_asm_neon (
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- width, height,
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- (uint32_t *)(((char *) dst_bits) +
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- dst_y * dst_stride * 4 + dst_x * 4), dst_stride,
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- (uint32_t *)(((char *) src_bits) +
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- src_y * src_stride * 4 + src_x * 4), src_stride);
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+ width >> 2,
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+ height,
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+ (uint32_t *) dst_bytes,
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+ dst_stride >> 2,
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+ (uint32_t *) src_bytes,
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+ src_stride >> 2);
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return TRUE;
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default:
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return FALSE;
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--
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1.6.6.1
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