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 40aee8b98e..a4a5efcc66 100644 --- a/libavutil/imgutils.h +++ b/libavutil/imgutils.h @@ -121,6 +121,24 @@ void av_image_copy(uint8_t *dst_data[4], int dst_linesizes[4], enum AVPixelFormat pix_fmt, int width, 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(). + * + * The data pointers and the linesizes must be aligned to the maximum required + * by the CPU architecture. + * + * @note The linesize parameters have the type ptrdiff_t here, while they are + * int for av_image_copy(). + * @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_uc_from(uint8_t *dst_data[4], const ptrdiff_t dst_linesizes[4], + const uint8_t *src_data[4], const ptrdiff_t src_linesizes[4], + enum AVPixelFormat pix_fmt, int width, int height); + +/** * Setup the data pointers and linesizes based on the specified image * parameters and the provided array. * |