diff options
Diffstat (limited to 'libavcodec/exrdsp.c')
-rw-r--r-- | libavcodec/exrdsp.c | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/libavcodec/exrdsp.c b/libavcodec/exrdsp.c new file mode 100644 index 0000000..42dbf1f --- /dev/null +++ b/libavcodec/exrdsp.c @@ -0,0 +1,56 @@ +/* + * This file is part of FFmpeg. + * + * Copyright (c) 2006 Industrial Light & Magic, a division of Lucas Digital Ltd. LLC + * + * FFmpeg 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. + * + * FFmpeg 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 FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <stdint.h> + +#include "libavutil/attributes.h" +#include "exrdsp.h" +#include "config.h" + +static void reorder_pixels_scalar(uint8_t *dst, const uint8_t *src, ptrdiff_t size) +{ + const uint8_t *t1 = src; + int half_size = size / 2; + const uint8_t *t2 = src + half_size; + uint8_t *s = dst; + int i; + + for (i = 0; i < half_size; i++) { + *(s++) = *(t1++); + *(s++) = *(t2++); + } +} + +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); +} |