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ffmpeg / libswscale / swscale_altivec_template.c @ adcec46a

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/*
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 * AltiVec-enhanced yuv2yuvX
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 *
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 * Copyright (C) 2004 Romain Dolbeau <romain@dolbeau.org>
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 * based on the equivalent C code in "postproc/swscale.c"
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 *
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 * This file is part of FFmpeg.
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 *
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 * FFmpeg is free software; you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
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 * the Free Software Foundation; either version 2 of the License, or
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 * (at your option) any later version.
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 *
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 * FFmpeg is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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#ifdef CONFIG_DARWIN
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#define AVV(x...) (x)
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#else
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#define AVV(x...) {x}
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#endif
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#define vzero vec_splat_s32(0)
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static inline void
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altivec_packIntArrayToCharArray(int *val, uint8_t* dest, int dstW) {
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  register int i;
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  vector unsigned int altivec_vectorShiftInt19 =
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    vec_add(vec_splat_u32(10),vec_splat_u32(9));
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  if ((unsigned long)dest % 16) {
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    /* badly aligned store, we force store alignement */
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    /* and will handle load misalignement on val w/ vec_perm */
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    vector unsigned char perm1;
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    vector signed int v1;
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    for (i = 0 ; (i < dstW) &&
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           (((unsigned long)dest + i) % 16) ; i++) {
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      int t = val[i] >> 19;
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      dest[i] = (t < 0) ? 0 : ((t > 255) ? 255 : t);
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    }
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    perm1 = vec_lvsl(i << 2, val);
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    v1 = vec_ld(i << 2, val);
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    for ( ; i < (dstW - 15); i+=16) {
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      int offset = i << 2;
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      vector signed int v2 = vec_ld(offset + 16, val);
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      vector signed int v3 = vec_ld(offset + 32, val);
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      vector signed int v4 = vec_ld(offset + 48, val);
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      vector signed int v5 = vec_ld(offset + 64, val);
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      vector signed int v12 = vec_perm(v1,v2,perm1);
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      vector signed int v23 = vec_perm(v2,v3,perm1);
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      vector signed int v34 = vec_perm(v3,v4,perm1);
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      vector signed int v45 = vec_perm(v4,v5,perm1);
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      vector signed int vA = vec_sra(v12, altivec_vectorShiftInt19);
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      vector signed int vB = vec_sra(v23, altivec_vectorShiftInt19);
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      vector signed int vC = vec_sra(v34, altivec_vectorShiftInt19);
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      vector signed int vD = vec_sra(v45, altivec_vectorShiftInt19);
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      vector unsigned short vs1 = vec_packsu(vA, vB);
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      vector unsigned short vs2 = vec_packsu(vC, vD);
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      vector unsigned char vf = vec_packsu(vs1, vs2);
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      vec_st(vf, i, dest);
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      v1 = v5;
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    }
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  } else { // dest is properly aligned, great
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    for (i = 0; i < (dstW - 15); i+=16) {
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      int offset = i << 2;
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      vector signed int v1 = vec_ld(offset, val);
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      vector signed int v2 = vec_ld(offset + 16, val);
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      vector signed int v3 = vec_ld(offset + 32, val);
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      vector signed int v4 = vec_ld(offset + 48, val);
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      vector signed int v5 = vec_sra(v1, altivec_vectorShiftInt19);
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      vector signed int v6 = vec_sra(v2, altivec_vectorShiftInt19);
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      vector signed int v7 = vec_sra(v3, altivec_vectorShiftInt19);
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      vector signed int v8 = vec_sra(v4, altivec_vectorShiftInt19);
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      vector unsigned short vs1 = vec_packsu(v5, v6);
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      vector unsigned short vs2 = vec_packsu(v7, v8);
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      vector unsigned char vf = vec_packsu(vs1, vs2);
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      vec_st(vf, i, dest);
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    }
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  }
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  for ( ; i < dstW ; i++) {
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    int t = val[i] >> 19;
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    dest[i] = (t < 0) ? 0 : ((t > 255) ? 255 : t);
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  }
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}
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static inline void
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yuv2yuvX_altivec_real(int16_t *lumFilter, int16_t **lumSrc, int lumFilterSize,
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                      int16_t *chrFilter, int16_t **chrSrc, int chrFilterSize,
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                      uint8_t *dest, uint8_t *uDest, uint8_t *vDest, int dstW, int chrDstW)
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{
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  const vector signed int vini = {(1 << 18), (1 << 18), (1 << 18), (1 << 18)};
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  register int i, j;
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  {
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    int __attribute__ ((aligned (16))) val[dstW];
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    for (i = 0; i < (dstW -7); i+=4) {
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      vec_st(vini, i << 2, val);
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    }
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    for (; i < dstW; i++) {
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      val[i] = (1 << 18);
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    }
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    for (j = 0; j < lumFilterSize; j++) {
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      vector signed short l1, vLumFilter = vec_ld(j << 1, lumFilter);
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      vector unsigned char perm, perm0 = vec_lvsl(j << 1, lumFilter);
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      vLumFilter = vec_perm(vLumFilter, vLumFilter, perm0);
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      vLumFilter = vec_splat(vLumFilter, 0); // lumFilter[j] is loaded 8 times in vLumFilter
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      perm = vec_lvsl(0, lumSrc[j]);
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      l1 = vec_ld(0, lumSrc[j]);
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      for (i = 0; i < (dstW - 7); i+=8) {
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        int offset = i << 2;
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        vector signed short l2 = vec_ld((i << 1) + 16, lumSrc[j]);
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123
        vector signed int v1 = vec_ld(offset, val);
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        vector signed int v2 = vec_ld(offset + 16, val);
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        vector signed short ls = vec_perm(l1, l2, perm); // lumSrc[j][i] ... lumSrc[j][i+7]
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128
        vector signed int i1 = vec_mule(vLumFilter, ls);
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        vector signed int i2 = vec_mulo(vLumFilter, ls);
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        vector signed int vf1 = vec_mergeh(i1, i2);
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        vector signed int vf2 = vec_mergel(i1, i2); // lumSrc[j][i] * lumFilter[j] ... lumSrc[j][i+7] * lumFilter[j]
133
        
134
        vector signed int vo1 = vec_add(v1, vf1);
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        vector signed int vo2 = vec_add(v2, vf2);
136
        
137
        vec_st(vo1, offset, val);
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        vec_st(vo2, offset + 16, val);
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140
        l1 = l2;
141
      }
142
      for ( ; i < dstW; i++) {
143
        val[i] += lumSrc[j][i] * lumFilter[j];
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      }
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    }
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    altivec_packIntArrayToCharArray(val,dest,dstW);
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  }
148
  if (uDest != 0) {
149
    int  __attribute__ ((aligned (16))) u[chrDstW];
150
    int  __attribute__ ((aligned (16))) v[chrDstW];
151

    
152
    for (i = 0; i < (chrDstW -7); i+=4) {
153
      vec_st(vini, i << 2, u);
154
      vec_st(vini, i << 2, v);
155
    }
156
    for (; i < chrDstW; i++) {
157
      u[i] = (1 << 18);
158
      v[i] = (1 << 18);
159
    }
160
    
161
    for (j = 0; j < chrFilterSize; j++) {
162
      vector signed short l1, l1_V, vChrFilter = vec_ld(j << 1, chrFilter);
163
      vector unsigned char perm, perm0 = vec_lvsl(j << 1, chrFilter);
164
      vChrFilter = vec_perm(vChrFilter, vChrFilter, perm0);
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      vChrFilter = vec_splat(vChrFilter, 0); // chrFilter[j] is loaded 8 times in vChrFilter
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167
      perm = vec_lvsl(0, chrSrc[j]);
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      l1 = vec_ld(0, chrSrc[j]);
169
      l1_V = vec_ld(2048 << 1, chrSrc[j]);
170
      
171
      for (i = 0; i < (chrDstW - 7); i+=8) {
172
        int offset = i << 2;
173
        vector signed short l2 = vec_ld((i << 1) + 16, chrSrc[j]);
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        vector signed short l2_V = vec_ld(((i + 2048) << 1) + 16, chrSrc[j]);
175
        
176
        vector signed int v1 = vec_ld(offset, u);
177
        vector signed int v2 = vec_ld(offset + 16, u);
178
        vector signed int v1_V = vec_ld(offset, v);
179
        vector signed int v2_V = vec_ld(offset + 16, v);
180
        
181
        vector signed short ls = vec_perm(l1, l2, perm); // chrSrc[j][i] ... chrSrc[j][i+7]
182
        vector signed short ls_V = vec_perm(l1_V, l2_V, perm); // chrSrc[j][i+2048] ... chrSrc[j][i+2055]
183
        
184
        vector signed int i1 = vec_mule(vChrFilter, ls);
185
        vector signed int i2 = vec_mulo(vChrFilter, ls);
186
        vector signed int i1_V = vec_mule(vChrFilter, ls_V);
187
        vector signed int i2_V = vec_mulo(vChrFilter, ls_V);
188
        
189
        vector signed int vf1 = vec_mergeh(i1, i2);
190
        vector signed int vf2 = vec_mergel(i1, i2); // chrSrc[j][i] * chrFilter[j] ... chrSrc[j][i+7] * chrFilter[j]
191
        vector signed int vf1_V = vec_mergeh(i1_V, i2_V);
192
        vector signed int vf2_V = vec_mergel(i1_V, i2_V); // chrSrc[j][i] * chrFilter[j] ... chrSrc[j][i+7] * chrFilter[j]
193
        
194
        vector signed int vo1 = vec_add(v1, vf1);
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        vector signed int vo2 = vec_add(v2, vf2);
196
        vector signed int vo1_V = vec_add(v1_V, vf1_V);
197
        vector signed int vo2_V = vec_add(v2_V, vf2_V);
198
        
199
        vec_st(vo1, offset, u);
200
        vec_st(vo2, offset + 16, u);
201
        vec_st(vo1_V, offset, v);
202
        vec_st(vo2_V, offset + 16, v);
203
        
204
        l1 = l2;
205
        l1_V = l2_V;
206
      }
207
      for ( ; i < chrDstW; i++) {
208
        u[i] += chrSrc[j][i] * chrFilter[j];
209
        v[i] += chrSrc[j][i + 2048] * chrFilter[j];
210
      } 
211
    }
212
    altivec_packIntArrayToCharArray(u,uDest,chrDstW);
213
    altivec_packIntArrayToCharArray(v,vDest,chrDstW);
214
  }
215
}
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217
static inline void hScale_altivec_real(int16_t *dst, int dstW, uint8_t *src, int srcW, int xInc, int16_t *filter, int16_t *filterPos, int filterSize) {
218
  register int i;
219
  int __attribute__ ((aligned (16))) tempo[4];
220

    
221
  if (filterSize % 4) {
222
    for(i=0; i<dstW; i++) {
223
      register int j;
224
      register int srcPos = filterPos[i];
225
      register int val = 0;
226
      for(j=0; j<filterSize; j++) {
227
        val += ((int)src[srcPos + j])*filter[filterSize*i + j];
228
      }
229
      dst[i] = av_clip(val>>7, 0, (1<<15)-1);
230
    }
231
  }
232
  else
233
  switch (filterSize) {
234
  case 4:
235
    {
236
      for(i=0; i<dstW; i++) {
237
        register int srcPos = filterPos[i];
238

    
239
        vector unsigned char src_v0 = vec_ld(srcPos, src);
240
        vector unsigned char src_v1, src_vF;
241
        vector signed short src_v, filter_v;
242
        vector signed int val_vEven, val_s;
243
        if ((((int)src + srcPos)% 16) > 12) {
244
          src_v1 = vec_ld(srcPos + 16, src);
245
        }
246
        src_vF = vec_perm(src_v0, src_v1, vec_lvsl(srcPos, src));
247

    
248
        src_v = // vec_unpackh sign-extends...
249
          (vector signed short)(vec_mergeh((vector unsigned char)vzero, src_vF));
250
        // now put our elements in the even slots
251
        src_v = vec_mergeh(src_v, (vector signed short)vzero);
252

    
253
        filter_v = vec_ld(i << 3, filter);
254
        // the 3 above is 2 (filterSize == 4) + 1 (sizeof(short) == 2)
255

    
256
        // the neat trick : we only care for half the elements,
257
        // high or low depending on (i<<3)%16 (it's 0 or 8 here),
258
        // and we're going to use vec_mule, so we chose
259
        // carefully how to "unpack" the elements into the even slots
260
        if ((i << 3) % 16)
261
          filter_v = vec_mergel(filter_v,(vector signed short)vzero);
262
        else
263
          filter_v = vec_mergeh(filter_v,(vector signed short)vzero);
264

    
265
        val_vEven = vec_mule(src_v, filter_v);
266
        val_s = vec_sums(val_vEven, vzero);
267
        vec_st(val_s, 0, tempo);
268
        dst[i] = av_clip(tempo[3]>>7, 0, (1<<15)-1);
269
      }
270
    }
271
    break;
272

    
273
  case 8:
274
    {
275
      for(i=0; i<dstW; i++) {
276
        register int srcPos = filterPos[i];
277

    
278
        vector unsigned char src_v0 = vec_ld(srcPos, src);
279
        vector unsigned char src_v1, src_vF;
280
        vector signed short src_v, filter_v;
281
        vector signed int val_v, val_s;
282
        if ((((int)src + srcPos)% 16) > 8) {
283
          src_v1 = vec_ld(srcPos + 16, src);
284
        }
285
        src_vF = vec_perm(src_v0, src_v1, vec_lvsl(srcPos, src));
286

    
287
        src_v = // vec_unpackh sign-extends...
288
          (vector signed short)(vec_mergeh((vector unsigned char)vzero, src_vF));
289
        filter_v = vec_ld(i << 4, filter);
290
        // the 4 above is 3 (filterSize == 8) + 1 (sizeof(short) == 2)
291

    
292
        val_v = vec_msums(src_v, filter_v, (vector signed int)vzero);
293
        val_s = vec_sums(val_v, vzero);
294
        vec_st(val_s, 0, tempo);
295
        dst[i] = av_clip(tempo[3]>>7, 0, (1<<15)-1);
296
      }
297
    }
298
    break;
299

    
300
  case 16:
301
    {
302
      for(i=0; i<dstW; i++) {
303
        register int srcPos = filterPos[i];
304

    
305
        vector unsigned char src_v0 = vec_ld(srcPos, src);
306
        vector unsigned char src_v1 = vec_ld(srcPos + 16, src);
307
        vector unsigned char src_vF = vec_perm(src_v0, src_v1, vec_lvsl(srcPos, src));
308

    
309
        vector signed short src_vA = // vec_unpackh sign-extends...
310
          (vector signed short)(vec_mergeh((vector unsigned char)vzero, src_vF));
311
        vector signed short src_vB = // vec_unpackh sign-extends...
312
          (vector signed short)(vec_mergel((vector unsigned char)vzero, src_vF));
313

    
314
        vector signed short filter_v0 = vec_ld(i << 5, filter);
315
               vector signed short filter_v1 = vec_ld((i << 5) + 16, filter);
316
        // the 5 above are 4 (filterSize == 16) + 1 (sizeof(short) == 2)
317

    
318
        vector signed int val_acc = vec_msums(src_vA, filter_v0, (vector signed int)vzero);
319
        vector signed int val_v = vec_msums(src_vB, filter_v1, val_acc);
320

    
321
        vector signed int val_s = vec_sums(val_v, vzero);
322

    
323
        vec_st(val_s, 0, tempo);
324
        dst[i] = av_clip(tempo[3]>>7, 0, (1<<15)-1);
325
      }
326
    }
327
    break;
328
    
329
  default:
330
    {
331
      for(i=0; i<dstW; i++) {
332
        register int j;
333
        register int srcPos = filterPos[i];
334

    
335
        vector signed int val_s, val_v = (vector signed int)vzero;
336
        vector signed short filter_v0R = vec_ld(i * 2 * filterSize, filter);
337
        vector unsigned char permF = vec_lvsl((i * 2 * filterSize), filter);
338

    
339
        vector unsigned char src_v0 = vec_ld(srcPos, src);
340
        vector unsigned char permS = vec_lvsl(srcPos, src);
341

    
342
        for (j = 0 ; j < filterSize - 15; j += 16) {
343
          vector unsigned char src_v1 = vec_ld(srcPos + j + 16, src);
344
          vector unsigned char src_vF = vec_perm(src_v0, src_v1, permS);
345
          
346
          vector signed short src_vA = // vec_unpackh sign-extends...
347
            (vector signed short)(vec_mergeh((vector unsigned char)vzero, src_vF));
348
          vector signed short src_vB = // vec_unpackh sign-extends...
349
            (vector signed short)(vec_mergel((vector unsigned char)vzero, src_vF));
350
          
351
          vector signed short filter_v1R = vec_ld((i * 2 * filterSize) + (j * 2) + 16, filter);
352
          vector signed short filter_v2R = vec_ld((i * 2 * filterSize) + (j * 2) + 32, filter);
353
          vector signed short filter_v0 = vec_perm(filter_v0R, filter_v1R, permF);
354
          vector signed short filter_v1 = vec_perm(filter_v1R, filter_v2R, permF);
355
          
356
          vector signed int val_acc = vec_msums(src_vA, filter_v0, val_v);
357
          val_v = vec_msums(src_vB, filter_v1, val_acc);
358

    
359
          filter_v0R = filter_v2R;
360
          src_v0 = src_v1;
361
        }
362

    
363
        if (j < (filterSize-7)) {
364
          // loading src_v0 is useless, it's already done above
365
          //vector unsigned char src_v0 = vec_ld(srcPos + j, src);
366
          vector unsigned char src_v1, src_vF;
367
          vector signed short src_v, filter_v1R, filter_v;
368
          if ((((int)src + srcPos)% 16) > 8) {
369
            src_v1 = vec_ld(srcPos + j + 16, src);
370
          }
371
          src_vF = vec_perm(src_v0, src_v1, permS);
372
          
373
          src_v = // vec_unpackh sign-extends...
374
            (vector signed short)(vec_mergeh((vector unsigned char)vzero, src_vF));
375
          // loading filter_v0R is useless, it's already done above
376
          //vector signed short filter_v0R = vec_ld((i * 2 * filterSize) + j, filter);
377
          filter_v1R = vec_ld((i * 2 * filterSize) + (j * 2) + 16, filter);
378
          filter_v = vec_perm(filter_v0R, filter_v1R, permF);
379
          
380
          val_v = vec_msums(src_v, filter_v, val_v);
381
        }
382

    
383
        val_s = vec_sums(val_v, vzero);
384
          
385
        vec_st(val_s, 0, tempo);
386
        dst[i] = av_clip(tempo[3]>>7, 0, (1<<15)-1);        
387
      }
388
      
389
    }
390
  }
391
}
392

    
393
static inline int yv12toyuy2_unscaled_altivec(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
394
     int srcSliceH, uint8_t* dstParam[], int dstStride_a[]) {
395
  uint8_t *dst=dstParam[0] + dstStride_a[0]*srcSliceY;
396
  // yv12toyuy2( src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0] );
397
  uint8_t *ysrc = src[0];
398
  uint8_t *usrc = src[1];
399
  uint8_t *vsrc = src[2];
400
  const int width = c->srcW;
401
  const int height = srcSliceH;
402
  const int lumStride = srcStride[0];
403
  const int chromStride = srcStride[1];
404
  const int dstStride = dstStride_a[0];
405
  const vector unsigned char yperm = vec_lvsl(0, ysrc);
406
  const int vertLumPerChroma = 2;  
407
  register unsigned int y;
408

    
409
  if(width&15){
410
    yv12toyuy2( ysrc, usrc, vsrc, dst,c->srcW,srcSliceH, lumStride, chromStride, dstStride);
411
    return srcSliceH;
412
  }
413

    
414
  /* this code assume:
415

416
  1) dst is 16 bytes-aligned
417
  2) dstStride is a multiple of 16
418
  3) width is a multiple of 16
419
  4) lum&chrom stride are multiple of 8
420
  */
421
  
422
  for(y=0; y<height; y++)
423
    {
424
      int i;
425
      for (i = 0; i < width - 31; i+= 32) {
426
        const unsigned int j = i >> 1;
427
        vector unsigned char v_yA = vec_ld(i, ysrc);
428
        vector unsigned char v_yB = vec_ld(i + 16, ysrc);
429
        vector unsigned char v_yC = vec_ld(i + 32, ysrc);
430
        vector unsigned char v_y1 = vec_perm(v_yA, v_yB, yperm);
431
        vector unsigned char v_y2 = vec_perm(v_yB, v_yC, yperm);
432
        vector unsigned char v_uA = vec_ld(j, usrc);
433
        vector unsigned char v_uB = vec_ld(j + 16, usrc);
434
        vector unsigned char v_u = vec_perm(v_uA, v_uB, vec_lvsl(j, usrc));
435
        vector unsigned char v_vA = vec_ld(j, vsrc);
436
        vector unsigned char v_vB = vec_ld(j + 16, vsrc);
437
        vector unsigned char v_v = vec_perm(v_vA, v_vB, vec_lvsl(j, vsrc));
438
        vector unsigned char v_uv_a = vec_mergeh(v_u, v_v);
439
        vector unsigned char v_uv_b = vec_mergel(v_u, v_v);
440
        vector unsigned char v_yuy2_0 = vec_mergeh(v_y1, v_uv_a);
441
        vector unsigned char v_yuy2_1 = vec_mergel(v_y1, v_uv_a);
442
        vector unsigned char v_yuy2_2 = vec_mergeh(v_y2, v_uv_b);
443
        vector unsigned char v_yuy2_3 = vec_mergel(v_y2, v_uv_b);
444
        vec_st(v_yuy2_0, (i << 1), dst);
445
        vec_st(v_yuy2_1, (i << 1) + 16, dst);
446
        vec_st(v_yuy2_2, (i << 1) + 32, dst);
447
        vec_st(v_yuy2_3, (i << 1) + 48, dst);
448
      }
449
      if (i < width) {
450
        const unsigned int j = i >> 1;
451
        vector unsigned char v_y1 = vec_ld(i, ysrc);
452
        vector unsigned char v_u = vec_ld(j, usrc);
453
        vector unsigned char v_v = vec_ld(j, vsrc);
454
        vector unsigned char v_uv_a = vec_mergeh(v_u, v_v);
455
        vector unsigned char v_yuy2_0 = vec_mergeh(v_y1, v_uv_a);
456
        vector unsigned char v_yuy2_1 = vec_mergel(v_y1, v_uv_a);
457
        vec_st(v_yuy2_0, (i << 1), dst);
458
        vec_st(v_yuy2_1, (i << 1) + 16, dst);
459
      }
460
      if((y&(vertLumPerChroma-1))==(vertLumPerChroma-1) )
461
        {
462
          usrc += chromStride;
463
          vsrc += chromStride;
464
        }
465
      ysrc += lumStride;
466
      dst += dstStride;
467
    }
468
  
469
  return srcSliceH;
470
}
471

    
472
static inline int yv12touyvy_unscaled_altivec(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
473
     int srcSliceH, uint8_t* dstParam[], int dstStride_a[]) {
474
  uint8_t *dst=dstParam[0] + dstStride_a[0]*srcSliceY;
475
  // yv12toyuy2( src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0] );
476
  uint8_t *ysrc = src[0];
477
  uint8_t *usrc = src[1];
478
  uint8_t *vsrc = src[2];
479
  const int width = c->srcW;
480
  const int height = srcSliceH;
481
  const int lumStride = srcStride[0];
482
  const int chromStride = srcStride[1];
483
  const int dstStride = dstStride_a[0];
484
  const int vertLumPerChroma = 2;
485
  const vector unsigned char yperm = vec_lvsl(0, ysrc);
486
  register unsigned int y;
487

    
488
  if(width&15){
489
    yv12touyvy( ysrc, usrc, vsrc, dst,c->srcW,srcSliceH, lumStride, chromStride, dstStride);
490
    return srcSliceH;
491
  }
492

    
493
  /* this code assume:
494

495
  1) dst is 16 bytes-aligned
496
  2) dstStride is a multiple of 16
497
  3) width is a multiple of 16
498
  4) lum&chrom stride are multiple of 8
499
  */
500
  
501
  for(y=0; y<height; y++)
502
    {
503
      int i;
504
      for (i = 0; i < width - 31; i+= 32) {
505
        const unsigned int j = i >> 1;
506
        vector unsigned char v_yA = vec_ld(i, ysrc);
507
        vector unsigned char v_yB = vec_ld(i + 16, ysrc);
508
        vector unsigned char v_yC = vec_ld(i + 32, ysrc);
509
        vector unsigned char v_y1 = vec_perm(v_yA, v_yB, yperm);
510
        vector unsigned char v_y2 = vec_perm(v_yB, v_yC, yperm);
511
        vector unsigned char v_uA = vec_ld(j, usrc);
512
        vector unsigned char v_uB = vec_ld(j + 16, usrc);
513
        vector unsigned char v_u = vec_perm(v_uA, v_uB, vec_lvsl(j, usrc));
514
        vector unsigned char v_vA = vec_ld(j, vsrc);
515
        vector unsigned char v_vB = vec_ld(j + 16, vsrc);
516
        vector unsigned char v_v = vec_perm(v_vA, v_vB, vec_lvsl(j, vsrc));
517
        vector unsigned char v_uv_a = vec_mergeh(v_u, v_v);
518
        vector unsigned char v_uv_b = vec_mergel(v_u, v_v);
519
        vector unsigned char v_uyvy_0 = vec_mergeh(v_uv_a, v_y1);
520
        vector unsigned char v_uyvy_1 = vec_mergel(v_uv_a, v_y1);
521
        vector unsigned char v_uyvy_2 = vec_mergeh(v_uv_b, v_y2);
522
        vector unsigned char v_uyvy_3 = vec_mergel(v_uv_b, v_y2);
523
        vec_st(v_uyvy_0, (i << 1), dst);
524
        vec_st(v_uyvy_1, (i << 1) + 16, dst);
525
        vec_st(v_uyvy_2, (i << 1) + 32, dst);
526
        vec_st(v_uyvy_3, (i << 1) + 48, dst);
527
      }
528
      if (i < width) {
529
        const unsigned int j = i >> 1;
530
        vector unsigned char v_y1 = vec_ld(i, ysrc);
531
        vector unsigned char v_u = vec_ld(j, usrc);
532
        vector unsigned char v_v = vec_ld(j, vsrc);
533
        vector unsigned char v_uv_a = vec_mergeh(v_u, v_v);
534
        vector unsigned char v_uyvy_0 = vec_mergeh(v_uv_a, v_y1);
535
        vector unsigned char v_uyvy_1 = vec_mergel(v_uv_a, v_y1);
536
        vec_st(v_uyvy_0, (i << 1), dst);
537
        vec_st(v_uyvy_1, (i << 1) + 16, dst);
538
      }
539
      if((y&(vertLumPerChroma-1))==(vertLumPerChroma-1) )
540
        {
541
          usrc += chromStride;
542
          vsrc += chromStride;
543
        }
544
      ysrc += lumStride;
545
      dst += dstStride;
546
    }
547
  return srcSliceH;
548
}