libavcodec/exr : add x86 SIMD for predictor

Signed-off-by: James Almer <jamrial@gmail.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/libavcodec/exrdsp.c b/libavcodec/exrdsp.c
index 871b6f1276..42dbf1f54a 100644
--- a/libavcodec/exrdsp.c
+++ b/libavcodec/exrdsp.c
@@ -38,9 +38,18 @@ static void reorder_pixels_scalar(uint8_t *dst, const uint8_t *src, ptrdiff_t si
     }
 }
 
+static void predictor_scalar(uint8_t *src, ptrdiff_t size)
+{
+    ptrdiff_t i;
+
+    for (i = 1; i < size; i++)
+        src[i] += src[i-1] - 128;
+}
+
 av_cold void ff_exrdsp_init(ExrDSPContext *c)
 {
     c->reorder_pixels   = reorder_pixels_scalar;
+    c->predictor        = predictor_scalar;
 
     if (ARCH_X86)
         ff_exrdsp_init_x86(c);