diff options
author | Anton Khirnov <anton@khirnov.net> | 2016-08-23 22:46:50 +0300 |
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committer | Anton Khirnov <anton@khirnov.net> | 2016-08-31 09:15:47 +0300 |
commit | d7bc52bf456deba0f32d9fe5c288ec441f1ebef5 (patch) | |
tree | 23727303f674466f004d94c55f00b61124a8a670 /libavutil/x86/imgutils_init.c | |
parent | 24da430324735f95880c4a4a54298dc8023125bb (diff) |
imgutils: add a function for copying image data from GPU mapped memory
See https://software.intel.com/en-us/articles/copying-accelerated-video-decode-frame-buffers
Diffstat (limited to 'libavutil/x86/imgutils_init.c')
-rw-r--r-- | libavutil/x86/imgutils_init.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/libavutil/x86/imgutils_init.c b/libavutil/x86/imgutils_init.c new file mode 100644 index 0000000000..20ee9abaa2 --- /dev/null +++ b/libavutil/x86/imgutils_init.c @@ -0,0 +1,49 @@ +/* + * This file is part of Libav. + * + * Libav is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * Libav is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with Libav; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <stddef.h> +#include <stdint.h> + +#include "libavutil/cpu.h" +#include "libavutil/error.h" +#include "libavutil/imgutils.h" +#include "libavutil/imgutils_internal.h" +#include "libavutil/internal.h" + +#include "cpu.h" + +void ff_image_copy_plane_uc_from_sse4(uint8_t *dst, ptrdiff_t dst_linesize, + const uint8_t *src, ptrdiff_t src_linesize, + ptrdiff_t bytewidth, int height); + +int ff_image_copy_plane_uc_from_x86(uint8_t *dst, ptrdiff_t dst_linesize, + const uint8_t *src, ptrdiff_t src_linesize, + ptrdiff_t bytewidth, int height) +{ + int cpu_flags = av_get_cpu_flags(); + ptrdiff_t bw_aligned = FFALIGN(bytewidth, 64); + + if (EXTERNAL_SSE4(cpu_flags) && + bw_aligned <= dst_linesize && bw_aligned <= src_linesize) + ff_image_copy_plane_uc_from_sse4(dst, dst_linesize, src, src_linesize, + bw_aligned, height); + else + return AVERROR(ENOSYS); + + return 0; +} |