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[x264] / common / arm / mc-c.c
1 /*****************************************************************************
2  * mc-c.c: arm motion compensation
3  *****************************************************************************
4  * Copyright (C) 2009-2016 x264 project
5  *
6  * Authors: David Conrad <lessen42@gmail.com>
7  *          Janne Grunau <janne-x264@jannau.net>
8  *
9  * This program is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation; either version 2 of the License, or
12  * (at your option) any later version.
13  *
14  * This program is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17  * GNU General Public License for more details.
18  *
19  * You should have received a copy of the GNU General Public License
20  * along with this program; if not, write to the Free Software
21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02111, USA.
22  *
23  * This program is also available under a commercial proprietary license.
24  * For more information, contact us at licensing@x264.com.
25  *****************************************************************************/
26
27 #include "common/common.h"
28 #include "mc.h"
29
30 void x264_prefetch_ref_arm( uint8_t *, intptr_t, int );
31 void x264_prefetch_fenc_arm( uint8_t *, intptr_t, uint8_t *, intptr_t, int );
32
33 void *x264_memcpy_aligned_neon( void *dst, const void *src, size_t n );
34 void x264_memzero_aligned_neon( void *dst, size_t n );
35
36 void x264_pixel_avg_16x16_neon( uint8_t *, intptr_t, uint8_t *, intptr_t, uint8_t *, intptr_t, int );
37 void x264_pixel_avg_16x8_neon ( uint8_t *, intptr_t, uint8_t *, intptr_t, uint8_t *, intptr_t, int );
38 void x264_pixel_avg_8x16_neon ( uint8_t *, intptr_t, uint8_t *, intptr_t, uint8_t *, intptr_t, int );
39 void x264_pixel_avg_8x8_neon  ( uint8_t *, intptr_t, uint8_t *, intptr_t, uint8_t *, intptr_t, int );
40 void x264_pixel_avg_8x4_neon  ( uint8_t *, intptr_t, uint8_t *, intptr_t, uint8_t *, intptr_t, int );
41 void x264_pixel_avg_4x16_neon ( uint8_t *, intptr_t, uint8_t *, intptr_t, uint8_t *, intptr_t, int );
42 void x264_pixel_avg_4x8_neon  ( uint8_t *, intptr_t, uint8_t *, intptr_t, uint8_t *, intptr_t, int );
43 void x264_pixel_avg_4x4_neon  ( uint8_t *, intptr_t, uint8_t *, intptr_t, uint8_t *, intptr_t, int );
44 void x264_pixel_avg_4x2_neon  ( uint8_t *, intptr_t, uint8_t *, intptr_t, uint8_t *, intptr_t, int );
45
46 void x264_pixel_avg2_w4_neon ( uint8_t *, intptr_t, uint8_t *, intptr_t, uint8_t *, int );
47 void x264_pixel_avg2_w8_neon ( uint8_t *, intptr_t, uint8_t *, intptr_t, uint8_t *, int );
48 void x264_pixel_avg2_w16_neon( uint8_t *, intptr_t, uint8_t *, intptr_t, uint8_t *, int );
49 void x264_pixel_avg2_w20_neon( uint8_t *, intptr_t, uint8_t *, intptr_t, uint8_t *, int );
50
51 void x264_plane_copy_neon( pixel *dst, intptr_t i_dst,
52                            pixel *src, intptr_t i_src, int w, int h );
53 void x264_plane_copy_deinterleave_neon(  pixel *dstu, intptr_t i_dstu,
54                                          pixel *dstv, intptr_t i_dstv,
55                                          pixel *src,  intptr_t i_src, int w, int h );
56 void x264_plane_copy_deinterleave_rgb_neon( pixel *dsta, intptr_t i_dsta,
57                                             pixel *dstb, intptr_t i_dstb,
58                                             pixel *dstc, intptr_t i_dstc,
59                                             pixel *src,  intptr_t i_src, int pw, int w, int h );
60 void x264_plane_copy_interleave_neon( pixel *dst,  intptr_t i_dst,
61                                       pixel *srcu, intptr_t i_srcu,
62                                       pixel *srcv, intptr_t i_srcv, int w, int h );
63 void x264_plane_copy_swap_neon( pixel *dst, intptr_t i_dst,
64                                 pixel *src, intptr_t i_src, int w, int h );
65
66 void x264_store_interleave_chroma_neon( pixel *dst, intptr_t i_dst, pixel *srcu, pixel *srcv, int height );
67 void x264_load_deinterleave_chroma_fdec_neon( pixel *dst, pixel *src, intptr_t i_src, int height );
68 void x264_load_deinterleave_chroma_fenc_neon( pixel *dst, pixel *src, intptr_t i_src, int height );
69
70 #if !HIGH_BIT_DEPTH
71 #define MC_WEIGHT(func)\
72 void x264_mc_weight_w20##func##_neon( uint8_t *, intptr_t, uint8_t *, intptr_t, const x264_weight_t *, int );\
73 void x264_mc_weight_w16##func##_neon( uint8_t *, intptr_t, uint8_t *, intptr_t, const x264_weight_t *, int );\
74 void x264_mc_weight_w8##func##_neon ( uint8_t *, intptr_t, uint8_t *, intptr_t, const x264_weight_t *, int );\
75 void x264_mc_weight_w4##func##_neon ( uint8_t *, intptr_t, uint8_t *, intptr_t, const x264_weight_t *, int );\
76 \
77 static weight_fn_t x264_mc##func##_wtab_neon[6] =\
78 {\
79     x264_mc_weight_w4##func##_neon,\
80     x264_mc_weight_w4##func##_neon,\
81     x264_mc_weight_w8##func##_neon,\
82     x264_mc_weight_w16##func##_neon,\
83     x264_mc_weight_w16##func##_neon,\
84     x264_mc_weight_w20##func##_neon,\
85 };
86
87 MC_WEIGHT()
88 MC_WEIGHT(_nodenom)
89 MC_WEIGHT(_offsetadd)
90 MC_WEIGHT(_offsetsub)
91 #endif
92
93 void x264_mc_copy_w4_neon ( uint8_t *, intptr_t, uint8_t *, intptr_t, int );
94 void x264_mc_copy_w8_neon ( uint8_t *, intptr_t, uint8_t *, intptr_t, int );
95 void x264_mc_copy_w16_neon( uint8_t *, intptr_t, uint8_t *, intptr_t, int );
96 void x264_mc_copy_w16_aligned_neon( uint8_t *, intptr_t, uint8_t *, intptr_t, int );
97
98 void x264_mc_chroma_neon( uint8_t *, uint8_t *, intptr_t, uint8_t *, intptr_t, int, int, int, int );
99 void x264_frame_init_lowres_core_neon( uint8_t *, uint8_t *, uint8_t *, uint8_t *, uint8_t *, intptr_t, intptr_t, int, int );
100
101 void x264_hpel_filter_v_neon( uint8_t *, uint8_t *, int16_t *, intptr_t, int );
102 void x264_hpel_filter_c_neon( uint8_t *, int16_t *, int );
103 void x264_hpel_filter_h_neon( uint8_t *, uint8_t *, int );
104
105 void integral_init4h_neon( uint16_t *, uint8_t *, intptr_t );
106 void integral_init4v_neon( uint16_t *, uint16_t *, intptr_t );
107 void integral_init8h_neon( uint16_t *, uint8_t *, intptr_t );
108 void integral_init8v_neon( uint16_t *, intptr_t );
109
110 void x264_mbtree_propagate_cost_neon( int16_t *, uint16_t *, uint16_t *, uint16_t *, uint16_t *, float *, int );
111
112 #if !HIGH_BIT_DEPTH
113 static void x264_weight_cache_neon( x264_t *h, x264_weight_t *w )
114 {
115     if( w->i_scale == 1<<w->i_denom )
116     {
117         if( w->i_offset < 0 )
118         {
119             w->weightfn = x264_mc_offsetsub_wtab_neon;
120             w->cachea[0] = -w->i_offset;
121         }
122         else
123         {
124             w->weightfn = x264_mc_offsetadd_wtab_neon;
125             w->cachea[0] = w->i_offset;
126         }
127     }
128     else if( !w->i_denom )
129         w->weightfn = x264_mc_nodenom_wtab_neon;
130     else
131         w->weightfn = x264_mc_wtab_neon;
132 }
133
134 static void (* const x264_pixel_avg_wtab_neon[6])( uint8_t *, intptr_t, uint8_t *, intptr_t, uint8_t *, int ) =
135 {
136     NULL,
137     x264_pixel_avg2_w4_neon,
138     x264_pixel_avg2_w8_neon,
139     x264_pixel_avg2_w16_neon,   // no slower than w12, so no point in a separate function
140     x264_pixel_avg2_w16_neon,
141     x264_pixel_avg2_w20_neon,
142 };
143
144 static void (* const x264_mc_copy_wtab_neon[5])( uint8_t *, intptr_t, uint8_t *, intptr_t, int ) =
145 {
146     NULL,
147     x264_mc_copy_w4_neon,
148     x264_mc_copy_w8_neon,
149     NULL,
150     x264_mc_copy_w16_neon,
151 };
152
153 static void mc_luma_neon( uint8_t *dst,    intptr_t i_dst_stride,
154                           uint8_t *src[4], intptr_t i_src_stride,
155                           int mvx, int mvy,
156                           int i_width, int i_height, const x264_weight_t *weight )
157 {
158     int qpel_idx = ((mvy&3)<<2) + (mvx&3);
159     intptr_t offset = (mvy>>2)*i_src_stride + (mvx>>2);
160     uint8_t *src1 = src[x264_hpel_ref0[qpel_idx]] + offset;
161     if ( (mvy&3) == 3 )             // explict if() to force conditional add
162         src1 += i_src_stride;
163
164     if( qpel_idx & 5 ) /* qpel interpolation needed */
165     {
166         uint8_t *src2 = src[x264_hpel_ref1[qpel_idx]] + offset + ((mvx&3) == 3);
167         x264_pixel_avg_wtab_neon[i_width>>2](
168                 dst, i_dst_stride, src1, i_src_stride,
169                 src2, i_height );
170         if( weight->weightfn )
171             weight->weightfn[i_width>>2]( dst, i_dst_stride, dst, i_dst_stride, weight, i_height );
172     }
173     else if( weight->weightfn )
174         weight->weightfn[i_width>>2]( dst, i_dst_stride, src1, i_src_stride, weight, i_height );
175     else
176         x264_mc_copy_wtab_neon[i_width>>2]( dst, i_dst_stride, src1, i_src_stride, i_height );
177 }
178
179 static uint8_t *get_ref_neon( uint8_t *dst,   intptr_t *i_dst_stride,
180                               uint8_t *src[4], intptr_t i_src_stride,
181                               int mvx, int mvy,
182                               int i_width, int i_height, const x264_weight_t *weight )
183 {
184     int qpel_idx = ((mvy&3)<<2) + (mvx&3);
185     intptr_t offset = (mvy>>2)*i_src_stride + (mvx>>2);
186     uint8_t *src1 = src[x264_hpel_ref0[qpel_idx]] + offset;
187     if ( (mvy&3) == 3 )             // explict if() to force conditional add
188         src1 += i_src_stride;
189
190     if( qpel_idx & 5 ) /* qpel interpolation needed */
191     {
192         uint8_t *src2 = src[x264_hpel_ref1[qpel_idx]] + offset + ((mvx&3) == 3);
193         x264_pixel_avg_wtab_neon[i_width>>2](
194                 dst, *i_dst_stride, src1, i_src_stride,
195                 src2, i_height );
196         if( weight->weightfn )
197             weight->weightfn[i_width>>2]( dst, *i_dst_stride, dst, *i_dst_stride, weight, i_height );
198         return dst;
199     }
200     else if( weight->weightfn )
201     {
202         weight->weightfn[i_width>>2]( dst, *i_dst_stride, src1, i_src_stride, weight, i_height );
203         return dst;
204     }
205     else
206     {
207         *i_dst_stride = i_src_stride;
208         return src1;
209     }
210 }
211
212 static void hpel_filter_neon( uint8_t *dsth, uint8_t *dstv, uint8_t *dstc, uint8_t *src,
213                               intptr_t stride, int width, int height, int16_t *buf )
214 {
215     intptr_t realign = (intptr_t)src & 15;
216     src -= realign;
217     dstv -= realign;
218     dstc -= realign;
219     dsth -= realign;
220     width += realign;
221     while( height-- )
222     {
223         x264_hpel_filter_v_neon( dstv, src, buf+8, stride, width );
224         x264_hpel_filter_c_neon( dstc, buf+8, width );
225         x264_hpel_filter_h_neon( dsth, src, width );
226         dsth += stride;
227         dstv += stride;
228         dstc += stride;
229         src  += stride;
230     }
231 }
232 #endif // !HIGH_BIT_DEPTH
233
234 PROPAGATE_LIST(neon)
235
236 void x264_mc_init_arm( int cpu, x264_mc_functions_t *pf )
237 {
238     if( !(cpu&X264_CPU_ARMV6) )
239         return;
240
241 #if !HIGH_BIT_DEPTH
242     pf->prefetch_fenc_420 = x264_prefetch_fenc_arm;
243     pf->prefetch_fenc_422 = x264_prefetch_fenc_arm; /* FIXME */
244     pf->prefetch_ref  = x264_prefetch_ref_arm;
245 #endif // !HIGH_BIT_DEPTH
246
247     if( !(cpu&X264_CPU_NEON) )
248         return;
249
250 #if !HIGH_BIT_DEPTH
251     pf->copy_16x16_unaligned = x264_mc_copy_w16_neon;
252     pf->copy[PIXEL_16x16] = x264_mc_copy_w16_aligned_neon;
253     pf->copy[PIXEL_8x8]   = x264_mc_copy_w8_neon;
254     pf->copy[PIXEL_4x4]   = x264_mc_copy_w4_neon;
255
256     pf->plane_copy              = x264_plane_copy_neon;
257     pf->plane_copy_deinterleave = x264_plane_copy_deinterleave_neon;
258     pf->plane_copy_deinterleave_rgb = x264_plane_copy_deinterleave_rgb_neon;
259     pf->plane_copy_interleave = x264_plane_copy_interleave_neon;
260     pf->plane_copy_swap = x264_plane_copy_swap_neon;
261
262     pf->store_interleave_chroma = x264_store_interleave_chroma_neon;
263     pf->load_deinterleave_chroma_fdec = x264_load_deinterleave_chroma_fdec_neon;
264     pf->load_deinterleave_chroma_fenc = x264_load_deinterleave_chroma_fenc_neon;
265
266     pf->avg[PIXEL_16x16] = x264_pixel_avg_16x16_neon;
267     pf->avg[PIXEL_16x8]  = x264_pixel_avg_16x8_neon;
268     pf->avg[PIXEL_8x16]  = x264_pixel_avg_8x16_neon;
269     pf->avg[PIXEL_8x8]   = x264_pixel_avg_8x8_neon;
270     pf->avg[PIXEL_8x4]   = x264_pixel_avg_8x4_neon;
271     pf->avg[PIXEL_4x16]  = x264_pixel_avg_4x16_neon;
272     pf->avg[PIXEL_4x8]   = x264_pixel_avg_4x8_neon;
273     pf->avg[PIXEL_4x4]   = x264_pixel_avg_4x4_neon;
274     pf->avg[PIXEL_4x2]   = x264_pixel_avg_4x2_neon;
275
276     pf->weight    = x264_mc_wtab_neon;
277     pf->offsetadd = x264_mc_offsetadd_wtab_neon;
278     pf->offsetsub = x264_mc_offsetsub_wtab_neon;
279     pf->weight_cache = x264_weight_cache_neon;
280
281     pf->mc_chroma = x264_mc_chroma_neon;
282     pf->mc_luma = mc_luma_neon;
283     pf->get_ref = get_ref_neon;
284     pf->hpel_filter = hpel_filter_neon;
285     pf->frame_init_lowres_core = x264_frame_init_lowres_core_neon;
286
287     pf->integral_init4h = integral_init4h_neon;
288     pf->integral_init8h = integral_init8h_neon;
289     pf->integral_init4v = integral_init4v_neon;
290     pf->integral_init8v = integral_init8v_neon;
291
292     pf->mbtree_propagate_cost = x264_mbtree_propagate_cost_neon;
293     pf->mbtree_propagate_list = x264_mbtree_propagate_list_neon;
294 #endif // !HIGH_BIT_DEPTH
295
296 // Apple's gcc stupidly cannot align stack variables, and ALIGNED_ARRAY can't work on structs
297 #ifndef SYS_MACOSX
298     pf->memcpy_aligned  = x264_memcpy_aligned_neon;
299 #endif
300     pf->memzero_aligned = x264_memzero_aligned_neon;
301 }