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mpegvideoencdsp_init.c
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1 /*
2  * This file is part of FFmpeg.
3  *
4  * FFmpeg is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * FFmpeg is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with FFmpeg; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17  */
18 
19 #include "libavutil/attributes.h"
20 #include "libavutil/avassert.h"
21 #include "libavutil/cpu.h"
22 #include "libavutil/x86/cpu.h"
23 #include "libavcodec/avcodec.h"
24 #include "libavcodec/mpegvideoencdsp.h"
25 
26 int ff_pix_sum16_mmx(uint8_t *pix, int line_size);
27 int ff_pix_sum16_sse2(uint8_t *pix, int line_size);
28 int ff_pix_sum16_xop(uint8_t *pix, int line_size);
29 int ff_pix_norm1_mmx(uint8_t *pix, int line_size);
30 int ff_pix_norm1_sse2(uint8_t *pix, int line_size);
31 
32 #if HAVE_INLINE_ASM
33 
34 #define PHADDD(a, t) \
35  "movq " #a ", " #t " \n\t" \
36  "psrlq $32, " #a " \n\t" \
37  "paddd " #t ", " #a " \n\t"
38 
39 /*
40  * pmulhw: dst[0 - 15] = (src[0 - 15] * dst[0 - 15])[16 - 31]
41  * pmulhrw: dst[0 - 15] = (src[0 - 15] * dst[0 - 15] + 0x8000)[16 - 31]
42  * pmulhrsw: dst[0 - 15] = (src[0 - 15] * dst[0 - 15] + 0x4000)[15 - 30]
43  */
44 #define PMULHRW(x, y, s, o) \
45  "pmulhw " #s ", " #x " \n\t" \
46  "pmulhw " #s ", " #y " \n\t" \
47  "paddw " #o ", " #x " \n\t" \
48  "paddw " #o ", " #y " \n\t" \
49  "psraw $1, " #x " \n\t" \
50  "psraw $1, " #y " \n\t"
51 #define DEF(x) x ## _mmx
52 #define SET_RND MOVQ_WONE
53 #define SCALE_OFFSET 1
54 
55 #include "mpegvideoenc_qns_template.c"
56 
57 #undef DEF
58 #undef SET_RND
59 #undef SCALE_OFFSET
60 #undef PMULHRW
61 
62 #define DEF(x) x ## _3dnow
63 #define SET_RND(x)
64 #define SCALE_OFFSET 0
65 #define PMULHRW(x, y, s, o) \
66  "pmulhrw " #s ", " #x " \n\t" \
67  "pmulhrw " #s ", " #y " \n\t"
68 
69 #include "mpegvideoenc_qns_template.c"
70 
71 #undef DEF
72 #undef SET_RND
73 #undef SCALE_OFFSET
74 #undef PMULHRW
75 
76 #if HAVE_SSSE3_INLINE
77 #undef PHADDD
78 #define DEF(x) x ## _ssse3
79 #define SET_RND(x)
80 #define SCALE_OFFSET -1
81 
82 #define PHADDD(a, t) \
83  "pshufw $0x0E, " #a ", " #t " \n\t" \
84  /* faster than phaddd on core2 */ \
85  "paddd " #t ", " #a " \n\t"
86 
87 #define PMULHRW(x, y, s, o) \
88  "pmulhrsw " #s ", " #x " \n\t" \
89  "pmulhrsw " #s ", " #y " \n\t"
90 
91 #include "mpegvideoenc_qns_template.c"
92 
93 #undef DEF
94 #undef SET_RND
95 #undef SCALE_OFFSET
96 #undef PMULHRW
97 #undef PHADDD
98 #endif /* HAVE_SSSE3_INLINE */
99 
100 /* Draw the edges of width 'w' of an image of size width, height
101  * this MMX version can only handle w == 8 || w == 16. */
102 static void draw_edges_mmx(uint8_t *buf, int wrap, int width, int height,
103  int w, int h, int sides)
104 {
105  uint8_t *ptr, *last_line;
106  int i;
107 
108  last_line = buf + (height - 1) * wrap;
109  /* left and right */
110  ptr = buf;
111  if (w == 8) {
112  __asm__ volatile (
113  "1: \n\t"
114  "movd (%0), %%mm0 \n\t"
115  "punpcklbw %%mm0, %%mm0 \n\t"
116  "punpcklwd %%mm0, %%mm0 \n\t"
117  "punpckldq %%mm0, %%mm0 \n\t"
118  "movq %%mm0, -8(%0) \n\t"
119  "movq -8(%0, %2), %%mm1 \n\t"
120  "punpckhbw %%mm1, %%mm1 \n\t"
121  "punpckhwd %%mm1, %%mm1 \n\t"
122  "punpckhdq %%mm1, %%mm1 \n\t"
123  "movq %%mm1, (%0, %2) \n\t"
124  "add %1, %0 \n\t"
125  "cmp %3, %0 \n\t"
126  "jb 1b \n\t"
127  : "+r" (ptr)
128  : "r" ((x86_reg) wrap), "r" ((x86_reg) width),
129  "r" (ptr + wrap * height));
130  } else if (w == 16) {
131  __asm__ volatile (
132  "1: \n\t"
133  "movd (%0), %%mm0 \n\t"
134  "punpcklbw %%mm0, %%mm0 \n\t"
135  "punpcklwd %%mm0, %%mm0 \n\t"
136  "punpckldq %%mm0, %%mm0 \n\t"
137  "movq %%mm0, -8(%0) \n\t"
138  "movq %%mm0, -16(%0) \n\t"
139  "movq -8(%0, %2), %%mm1 \n\t"
140  "punpckhbw %%mm1, %%mm1 \n\t"
141  "punpckhwd %%mm1, %%mm1 \n\t"
142  "punpckhdq %%mm1, %%mm1 \n\t"
143  "movq %%mm1, (%0, %2) \n\t"
144  "movq %%mm1, 8(%0, %2) \n\t"
145  "add %1, %0 \n\t"
146  "cmp %3, %0 \n\t"
147  "jb 1b \n\t"
148  : "+r"(ptr)
149  : "r"((x86_reg)wrap), "r"((x86_reg)width), "r"(ptr + wrap * height)
150  );
151  } else {
152  av_assert1(w == 4);
153  __asm__ volatile (
154  "1: \n\t"
155  "movd (%0), %%mm0 \n\t"
156  "punpcklbw %%mm0, %%mm0 \n\t"
157  "punpcklwd %%mm0, %%mm0 \n\t"
158  "movd %%mm0, -4(%0) \n\t"
159  "movd -4(%0, %2), %%mm1 \n\t"
160  "punpcklbw %%mm1, %%mm1 \n\t"
161  "punpckhwd %%mm1, %%mm1 \n\t"
162  "punpckhdq %%mm1, %%mm1 \n\t"
163  "movd %%mm1, (%0, %2) \n\t"
164  "add %1, %0 \n\t"
165  "cmp %3, %0 \n\t"
166  "jb 1b \n\t"
167  : "+r" (ptr)
168  : "r" ((x86_reg) wrap), "r" ((x86_reg) width),
169  "r" (ptr + wrap * height));
170  }
171 
172  /* top and bottom (and hopefully also the corners) */
173  if (sides & EDGE_TOP) {
174  for (i = 0; i < h; i += 4) {
175  ptr = buf - (i + 1) * wrap - w;
176  __asm__ volatile (
177  "1: \n\t"
178  "movq (%1, %0), %%mm0 \n\t"
179  "movq %%mm0, (%0) \n\t"
180  "movq %%mm0, (%0, %2) \n\t"
181  "movq %%mm0, (%0, %2, 2) \n\t"
182  "movq %%mm0, (%0, %3) \n\t"
183  "add $8, %0 \n\t"
184  "cmp %4, %0 \n\t"
185  "jb 1b \n\t"
186  : "+r" (ptr)
187  : "r" ((x86_reg) buf - (x86_reg) ptr - w),
188  "r" ((x86_reg) - wrap), "r" ((x86_reg) - wrap * 3),
189  "r" (ptr + width + 2 * w));
190  }
191  }
192 
193  if (sides & EDGE_BOTTOM) {
194  for (i = 0; i < h; i += 4) {
195  ptr = last_line + (i + 1) * wrap - w;
196  __asm__ volatile (
197  "1: \n\t"
198  "movq (%1, %0), %%mm0 \n\t"
199  "movq %%mm0, (%0) \n\t"
200  "movq %%mm0, (%0, %2) \n\t"
201  "movq %%mm0, (%0, %2, 2) \n\t"
202  "movq %%mm0, (%0, %3) \n\t"
203  "add $8, %0 \n\t"
204  "cmp %4, %0 \n\t"
205  "jb 1b \n\t"
206  : "+r" (ptr)
207  : "r" ((x86_reg) last_line - (x86_reg) ptr - w),
208  "r" ((x86_reg) wrap), "r" ((x86_reg) wrap * 3),
209  "r" (ptr + width + 2 * w));
210  }
211  }
212 }
213 
214 #endif /* HAVE_INLINE_ASM */
215 
216 av_cold void ff_mpegvideoencdsp_init_x86(MpegvideoEncDSPContext *c,
217  AVCodecContext *avctx)
218 {
219  int cpu_flags = av_get_cpu_flags();
220 
221  if (EXTERNAL_MMX(cpu_flags)) {
222  c->pix_sum = ff_pix_sum16_mmx;
223  c->pix_norm1 = ff_pix_norm1_mmx;
224  }
225 
226  if (EXTERNAL_SSE2(cpu_flags)) {
227  c->pix_sum = ff_pix_sum16_sse2;
228  c->pix_norm1 = ff_pix_norm1_sse2;
229  }
230 
231  if (EXTERNAL_XOP(cpu_flags)) {
232  c->pix_sum = ff_pix_sum16_xop;
233  }
234 
235 #if HAVE_INLINE_ASM
236 
237  if (INLINE_MMX(cpu_flags)) {
238  if (!(avctx->flags & CODEC_FLAG_BITEXACT)) {
239  c->try_8x8basis = try_8x8basis_mmx;
240  }
241  c->add_8x8basis = add_8x8basis_mmx;
242 
243  if (avctx->bits_per_raw_sample <= 8) {
244  c->draw_edges = draw_edges_mmx;
245  }
246  }
247 
248  if (INLINE_AMD3DNOW(cpu_flags)) {
249  if (!(avctx->flags & CODEC_FLAG_BITEXACT)) {
250  c->try_8x8basis = try_8x8basis_3dnow;
251  }
252  c->add_8x8basis = add_8x8basis_3dnow;
253  }
254 
255 #if HAVE_SSSE3_INLINE
256  if (INLINE_SSSE3(cpu_flags)) {
257  if (!(avctx->flags & CODEC_FLAG_BITEXACT)) {
258  c->try_8x8basis = try_8x8basis_ssse3;
259  }
260  c->add_8x8basis = add_8x8basis_ssse3;
261  }
262 #endif /* HAVE_SSSE3_INLINE */
263 
264 #endif /* HAVE_INLINE_ASM */
265 }
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