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-rw-r--r--libavfilter/transform.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/libavfilter/transform.h b/libavfilter/transform.h
index edd0cf2..07436bf 100644
--- a/libavfilter/transform.h
+++ b/libavfilter/transform.h
@@ -116,8 +116,9 @@ void avfilter_mul_matrix(const float *m1, float scalar, float *result);
* @param matrix 9-item affine transformation matrix
* @param interpolate pixel interpolation method
* @param fill edge fill method
+ * @return negative on error
*/
-void avfilter_transform(const uint8_t *src, uint8_t *dst,
+int avfilter_transform(const uint8_t *src, uint8_t *dst,
int src_stride, int dst_stride,
int width, int height, const float *matrix,
enum InterpolateMethod interpolate,
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