diff options
Diffstat (limited to 'libavutil/imgutils.h')
| -rw-r--r-- | libavutil/imgutils.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/libavutil/imgutils.h b/libavutil/imgutils.h index 5eccbf0bf7..cb2d74728e 100644 --- a/libavutil/imgutils.h +++ b/libavutil/imgutils.h @@ -125,6 +125,24 @@ void av_image_copy_plane(uint8_t *dst, int dst_linesize, int bytewidth, int height); /** + * Copy image data located in uncacheable (e.g. GPU mapped) memory. Where + * available, this function will use special functionality for reading from such + * memory, which may result in greatly improved performance compared to plain + * av_image_copy_plane(). + * + * bytewidth must be contained by both absolute values of dst_linesize + * and src_linesize, otherwise the function behavior is undefined. + * + * @note The linesize parameters have the type ptrdiff_t here, while they are + * int for av_image_copy_plane(). + * @note On x86, the linesizes currently need to be aligned to the cacheline + * size (i.e. 64) to get improved performance. + */ +void av_image_copy_plane_uc_from(uint8_t *dst, ptrdiff_t dst_linesize, + const uint8_t *src, ptrdiff_t src_linesize, + ptrdiff_t bytewidth, int height); + +/** * Copy image in src_data to dst_data. * * @param dst_linesizes linesizes for the image in dst_data |