/*
* Copyright (c) 2006 Luca Barbato <lu_zero@gentoo.org>
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * 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.
*
- * FFmpeg is distributed in the hope that it will be useful,
+ * 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 FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "dsputil_altivec.h"
#include "util_altivec.h"
-static void vector_fmul_altivec(float *dst, const float *src, int len)
+static void vector_fmul_altivec(float *dst, const float *src0, const float *src1, int len)
{
int i;
vector float d0, d1, s, zero = (vector float)vec_splat_u32(0);
for(i=0; i<len-7; i+=8) {
- d0 = vec_ld(0, dst+i);
- s = vec_ld(0, src+i);
- d1 = vec_ld(16, dst+i);
+ d0 = vec_ld(0, src0+i);
+ s = vec_ld(0, src1+i);
+ d1 = vec_ld(16, src0+i);
d0 = vec_madd(d0, s, zero);
- d1 = vec_madd(d1, vec_ld(16,src+i), zero);
+ d1 = vec_madd(d1, vec_ld(16,src1+i), zero);
vec_st(d0, 0, dst+i);
vec_st(d1, 16, dst+i);
}
}
}
-static void vector_fmul_window_altivec(float *dst, const float *src0, const float *src1, const float *win, float add_bias, int len)
+static void vector_fmul_window_altivec(float *dst, const float *src0, const float *src1, const float *win, int len)
{
- union {
- vector float v;
- float s[4];
- } vadd;
- vector float vadd_bias, zero, t0, t1, s0, s1, wi, wj;
+ vector float zero, t0, t1, s0, s1, wi, wj;
const vector unsigned char reverse = vcprm(3,2,1,0);
int i,j;
win += len;
src0+= len;
- vadd.s[0] = add_bias;
- vadd_bias = vec_splat(vadd.v, 0);
zero = (vector float)vec_splat_u32(0);
for(i=-len*4, j=len*4-16; i<0; i+=16, j-=16) {
s1 = vec_perm(s1, s1, reverse);
wj = vec_perm(wj, wj, reverse);
- t0 = vec_madd(s0, wj, vadd_bias);
+ t0 = vec_madd(s0, wj, zero);
t0 = vec_nmsub(s1, wi, t0);
- t1 = vec_madd(s0, wi, vadd_bias);
+ t1 = vec_madd(s0, wi, zero);
t1 = vec_madd(s1, wj, t1);
t1 = vec_perm(t1, t1, reverse);
}
}
-static void int32_to_float_fmul_scalar_altivec(float *dst, const int *src, float mul, int len)
-{
- union {
- vector float v;
- float s[4];
- } mul_u;
- int i;
- vector float src1, src2, dst1, dst2, mul_v, zero;
-
- zero = (vector float)vec_splat_u32(0);
- mul_u.s[0] = mul;
- mul_v = vec_splat(mul_u.v, 0);
-
- for(i=0; i<len; i+=8) {
- src1 = vec_ctf(vec_ld(0, src+i), 0);
- src2 = vec_ctf(vec_ld(16, src+i), 0);
- dst1 = vec_madd(src1, mul_v, zero);
- dst2 = vec_madd(src2, mul_v, zero);
- vec_st(dst1, 0, dst+i);
- vec_st(dst2, 16, dst+i);
- }
-}
-
-
-static vector signed short
-float_to_int16_one_altivec(const float *src)
-{
- vector float s0 = vec_ld(0, src);
- vector float s1 = vec_ld(16, src);
- vector signed int t0 = vec_cts(s0, 0);
- vector signed int t1 = vec_cts(s1, 0);
- return vec_packs(t0,t1);
-}
-
-static void float_to_int16_altivec(int16_t *dst, const float *src, long len)
-{
- int i;
- vector signed short d0, d1, d;
- vector unsigned char align;
- if(((long)dst)&15) //FIXME
- for(i=0; i<len-7; i+=8) {
- d0 = vec_ld(0, dst+i);
- d = float_to_int16_one_altivec(src+i);
- d1 = vec_ld(15, dst+i);
- d1 = vec_perm(d1, d0, vec_lvsl(0,dst+i));
- align = vec_lvsr(0, dst+i);
- d0 = vec_perm(d1, d, align);
- d1 = vec_perm(d, d1, align);
- vec_st(d0, 0, dst+i);
- vec_st(d1,15, dst+i);
- }
- else
- for(i=0; i<len-7; i+=8) {
- d = float_to_int16_one_altivec(src+i);
- vec_st(d, 0, dst+i);
- }
-}
-
-static void
-float_to_int16_interleave_altivec(int16_t *dst, const float **src,
- long len, int channels)
-{
- int i;
- vector signed short d0, d1, d2, c0, c1, t0, t1;
- vector unsigned char align;
- if(channels == 1)
- float_to_int16_altivec(dst, src[0], len);
- else
- if (channels == 2) {
- if(((long)dst)&15)
- for(i=0; i<len-7; i+=8) {
- d0 = vec_ld(0, dst + i);
- t0 = float_to_int16_one_altivec(src[0] + i);
- d1 = vec_ld(31, dst + i);
- t1 = float_to_int16_one_altivec(src[1] + i);
- c0 = vec_mergeh(t0, t1);
- c1 = vec_mergel(t0, t1);
- d2 = vec_perm(d1, d0, vec_lvsl(0, dst + i));
- align = vec_lvsr(0, dst + i);
- d0 = vec_perm(d2, c0, align);
- d1 = vec_perm(c0, c1, align);
- vec_st(d0, 0, dst + i);
- d0 = vec_perm(c1, d2, align);
- vec_st(d1, 15, dst + i);
- vec_st(d0, 31, dst + i);
- dst+=8;
- }
- else
- for(i=0; i<len-7; i+=8) {
- t0 = float_to_int16_one_altivec(src[0] + i);
- t1 = float_to_int16_one_altivec(src[1] + i);
- d0 = vec_mergeh(t0, t1);
- d1 = vec_mergel(t0, t1);
- vec_st(d0, 0, dst + i);
- vec_st(d1, 16, dst + i);
- dst+=8;
- }
- } else {
- DECLARE_ALIGNED(16, int16_t, tmp[len]);
- int c, j;
- for (c = 0; c < channels; c++) {
- float_to_int16_altivec(tmp, src[c], len);
- for (i = 0, j = c; i < len; i++, j+=channels) {
- dst[j] = tmp[i];
- }
- }
- }
-}
-
void float_init_altivec(DSPContext* c, AVCodecContext *avctx)
{
c->vector_fmul = vector_fmul_altivec;
c->vector_fmul_reverse = vector_fmul_reverse_altivec;
c->vector_fmul_add = vector_fmul_add_altivec;
- c->int32_to_float_fmul_scalar = int32_to_float_fmul_scalar_altivec;
if(!(avctx->flags & CODEC_FLAG_BITEXACT)) {
c->vector_fmul_window = vector_fmul_window_altivec;
- c->float_to_int16 = float_to_int16_altivec;
- c->float_to_int16_interleave = float_to_int16_interleave_altivec;
}
}
projects / ffmpeg / blobdiff