diff options
Diffstat (limited to 'libavcodec/ppc/vorbisdsp_altivec.c')
-rw-r--r-- | libavcodec/ppc/vorbisdsp_altivec.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/libavcodec/ppc/vorbisdsp_altivec.c b/libavcodec/ppc/vorbisdsp_altivec.c new file mode 100644 index 0000000000..cd8bbb90fc --- /dev/null +++ b/libavcodec/ppc/vorbisdsp_altivec.c @@ -0,0 +1,62 @@ +/* + * Copyright (c) 2006 Luca Barbato <lu_zero@gentoo.org> + * + * 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 "config.h" +#if HAVE_ALTIVEC_H +#include <altivec.h> +#endif +#include "libavutil/cpu.h" +#include "libavutil/ppc/types_altivec.h" +#include "libavutil/ppc/util_altivec.h" +#include "libavcodec/vorbisdsp.h" + +#if HAVE_ALTIVEC +static void vorbis_inverse_coupling_altivec(float *mag, float *ang, + int blocksize) +{ + int i; + vector float m, a; + vector bool int t0, t1; + const vector unsigned int v_31 = //XXX + vec_add(vec_add(vec_splat_u32(15),vec_splat_u32(15)),vec_splat_u32(1)); + for (i = 0; i < blocksize; i += 4) { + m = vec_ld(0, mag+i); + a = vec_ld(0, ang+i); + t0 = vec_cmple(m, (vector float)vec_splat_u32(0)); + t1 = vec_cmple(a, (vector float)vec_splat_u32(0)); + a = vec_xor(a, (vector float) vec_sl((vector unsigned int)t0, v_31)); + t0 = (vector bool int)vec_and(a, t1); + t1 = (vector bool int)vec_andc(a, t1); + a = vec_sub(m, (vector float)t1); + m = vec_add(m, (vector float)t0); + vec_stl(a, 0, ang+i); + vec_stl(m, 0, mag+i); + } +} +#endif /* HAVE_ALTIVEC */ + +void ff_vorbisdsp_init_ppc(VorbisDSPContext* c) +{ +#if HAVE_ALTIVEC + if (av_get_cpu_flags() & AV_CPU_FLAG_ALTIVEC) { + c->vorbis_inverse_coupling = vorbis_inverse_coupling_altivec; + } +#endif /* HAVE_ALTIVEC */ +} |