diff options
Diffstat (limited to 'gfx/2d/ssse3-scaler.c')
| -rw-r--r-- | gfx/2d/ssse3-scaler.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/gfx/2d/ssse3-scaler.c b/gfx/2d/ssse3-scaler.c index 345844b84..745f58f6f 100644 --- a/gfx/2d/ssse3-scaler.c +++ b/gfx/2d/ssse3-scaler.c @@ -37,6 +37,7 @@ #include <tmmintrin.h> #include <stdint.h> #include <assert.h> +#include "ssse3-scaler.h" typedef int32_t pixman_fixed_16_16_t; typedef pixman_fixed_16_16_t pixman_fixed_t; @@ -44,6 +45,8 @@ typedef pixman_fixed_16_16_t pixman_fixed_t; #define pixman_fixed_to_int(f) ((int) ((f) >> 16)) #define pixman_int_to_fixed(i) ((pixman_fixed_t) ((i) << 16)) #define pixman_double_to_fixed(d) ((pixman_fixed_t) ((d) * 65536.0)) +#define PIXMAN_FIXED_INT_MAX 32767 +#define PIXMAN_FIXED_INT_MIN -32768 typedef struct pixman_vector pixman_vector_t; typedef int pixman_bool_t; @@ -463,6 +466,12 @@ ssse3_bilinear_cover_iter_init (pixman_iter_t *iter) bilinear_info_t *info; pixman_vector_t v; + if (iter->x > PIXMAN_FIXED_INT_MAX || + iter->x < PIXMAN_FIXED_INT_MIN || + iter->y > PIXMAN_FIXED_INT_MAX || + iter->y < PIXMAN_FIXED_INT_MIN) + goto fail; + /* Reference point is the center of the pixel */ v.vector[0] = pixman_int_to_fixed (iter->x) + pixman_fixed_1 / 2; v.vector[1] = pixman_int_to_fixed (iter->y) + pixman_fixed_1 / 2; @@ -505,7 +514,7 @@ fail: /* scale the src from src_width/height to dest_width/height drawn * into the rectangle x,y width,height * src_stride and dst_stride are 4 byte units */ -void ssse3_scale_data(uint32_t *src, int src_width, int src_height, int src_stride, +bool ssse3_scale_data(uint32_t *src, int src_width, int src_height, int src_stride, uint32_t *dest, int dest_width, int dest_height, int dest_stride, int x, int y, @@ -551,6 +560,10 @@ void ssse3_scale_data(uint32_t *src, int src_width, int src_height, int src_stri iter.data = NULL; ssse3_bilinear_cover_iter_init(&iter); + + if (!iter.fini) + return false; + if (iter.data) { for (int iy = 0; iy < height; iy++) { ssse3_fetch_bilinear_cover(&iter, NULL); @@ -558,4 +571,5 @@ void ssse3_scale_data(uint32_t *src, int src_width, int src_height, int src_stri } ssse3_bilinear_cover_iter_fini(&iter); } + return true; } |