diff options
Diffstat (limited to 'libavcodec/mips/videodsp_init.c')
-rw-r--r-- | libavcodec/mips/videodsp_init.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/libavcodec/mips/videodsp_init.c b/libavcodec/mips/videodsp_init.c new file mode 100644 index 0000000..8170404 --- /dev/null +++ b/libavcodec/mips/videodsp_init.c @@ -0,0 +1,51 @@ +/* + * Copyright (c) 2017 Kaustubh Raste (kaustubh.raste@imgtec.com) + * + * This file is part of FFmpeg. + * + * 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 "config.h" +#include "libavutil/attributes.h" +#include "libavutil/mips/asmdefs.h" +#include "libavcodec/videodsp.h" + +#if HAVE_MSA +static void prefetch_mips(uint8_t *mem, ptrdiff_t stride, int h) +{ + register const uint8_t *p = mem; + + __asm__ volatile ( + "1: \n\t" + "pref 4, 0(%[p]) \n\t" + "pref 4, 32(%[p]) \n\t" + PTR_ADDIU" %[h], %[h], -1 \n\t" + PTR_ADDU " %[p], %[p], %[stride] \n\t" + + "bnez %[h], 1b \n\t" + + : [p] "+r" (p), [h] "+r" (h) + : [stride] "r" (stride) + ); +} +#endif // #if HAVE_MSA + +av_cold void ff_videodsp_init_mips(VideoDSPContext *ctx, int bpc) +{ +#if HAVE_MSA + ctx->prefetch = prefetch_mips; +#endif // #if HAVE_MSA +} |