FFmpeg
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
mpegvideoencdsp_init.c
Go to the documentation of this file.
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_mmxext(uint8_t *pix, int line_size);
28 int ff_pix_sum16_sse2(uint8_t *pix, int line_size);
29 int ff_pix_sum16_xop(uint8_t *pix, int line_size);
30 int ff_pix_norm1_mmx(uint8_t *pix, int line_size);
31 int ff_pix_norm1_sse2(uint8_t *pix, int line_size);
32 
33 #if HAVE_INLINE_ASM
34 
35 #define PHADDD(a, t) \
36  "movq " #a ", " #t " \n\t" \
37  "psrlq $32, " #a " \n\t" \
38  "paddd " #t ", " #a " \n\t"
39 
40 /*
41  * pmulhw: dst[0 - 15] = (src[0 - 15] * dst[0 - 15])[16 - 31]
42  * pmulhrw: dst[0 - 15] = (src[0 - 15] * dst[0 - 15] + 0x8000)[16 - 31]
43  * pmulhrsw: dst[0 - 15] = (src[0 - 15] * dst[0 - 15] + 0x4000)[15 - 30]
44  */
45 #define PMULHRW(x, y, s, o) \
46  "pmulhw " #s ", " #x " \n\t" \
47  "pmulhw " #s ", " #y " \n\t" \
48  "paddw " #o ", " #x " \n\t" \
49  "paddw " #o ", " #y " \n\t" \
50  "psraw $1, " #x " \n\t" \
51  "psraw $1, " #y " \n\t"
52 #define DEF(x) x ## _mmx
53 #define SET_RND MOVQ_WONE
54 #define SCALE_OFFSET 1
55 
56 #include "mpegvideoenc_qns_template.c"
57 
58 #undef DEF
59 #undef SET_RND
60 #undef SCALE_OFFSET
61 #undef PMULHRW
62 
63 #define DEF(x) x ## _3dnow
64 #define SET_RND(x)
65 #define SCALE_OFFSET 0
66 #define PMULHRW(x, y, s, o) \
67  "pmulhrw " #s ", " #x " \n\t" \
68  "pmulhrw " #s ", " #y " \n\t"
69 
70 #include "mpegvideoenc_qns_template.c"
71 
72 #undef DEF
73 #undef SET_RND
74 #undef SCALE_OFFSET
75 #undef PMULHRW
76 
77 #if HAVE_SSSE3_INLINE
78 #undef PHADDD
79 #define DEF(x) x ## _ssse3
80 #define SET_RND(x)
81 #define SCALE_OFFSET -1
82 
83 #define PHADDD(a, t) \
84  "pshufw $0x0E, " #a ", " #t " \n\t" \
85  /* faster than phaddd on core2 */ \
86  "paddd " #t ", " #a " \n\t"
87 
88 #define PMULHRW(x, y, s, o) \
89  "pmulhrsw " #s ", " #x " \n\t" \
90  "pmulhrsw " #s ", " #y " \n\t"
91 
92 #include "mpegvideoenc_qns_template.c"
93 
94 #undef DEF
95 #undef SET_RND
96 #undef SCALE_OFFSET
97 #undef PMULHRW
98 #undef PHADDD
99 #endif /* HAVE_SSSE3_INLINE */
100 
101 /* Draw the edges of width 'w' of an image of size width, height
102  * this MMX version can only handle w == 8 || w == 16. */
103 static void draw_edges_mmx(uint8_t *buf, int wrap, int width, int height,
104  int w, int h, int sides)
105 {
106  uint8_t *ptr, *last_line;
107  int i;
108 
109  last_line = buf + (height - 1) * wrap;
110  /* left and right */
111  ptr = buf;
112  if (w == 8) {
113  __asm__ volatile (
114  "1: \n\t"
115  "movd (%0), %%mm0 \n\t"
116  "punpcklbw %%mm0, %%mm0 \n\t"
117  "punpcklwd %%mm0, %%mm0 \n\t"
118  "punpckldq %%mm0, %%mm0 \n\t"
119  "movq %%mm0, -8(%0) \n\t"
120  "movq -8(%0, %2), %%mm1 \n\t"
121  "punpckhbw %%mm1, %%mm1 \n\t"
122  "punpckhwd %%mm1, %%mm1 \n\t"
123  "punpckhdq %%mm1, %%mm1 \n\t"
124  "movq %%mm1, (%0, %2) \n\t"
125  "add %1, %0 \n\t"
126  "cmp %3, %0 \n\t"
127  "jb 1b \n\t"
128  : "+r" (ptr)
129  : "r" ((x86_reg) wrap), "r" ((x86_reg) width),
130  "r" (ptr + wrap * height));
131  } else if (w == 16) {
132  __asm__ volatile (
133  "1: \n\t"
134  "movd (%0), %%mm0 \n\t"
135  "punpcklbw %%mm0, %%mm0 \n\t"
136  "punpcklwd %%mm0, %%mm0 \n\t"
137  "punpckldq %%mm0, %%mm0 \n\t"
138  "movq %%mm0, -8(%0) \n\t"
139  "movq %%mm0, -16(%0) \n\t"
140  "movq -8(%0, %2), %%mm1 \n\t"
141  "punpckhbw %%mm1, %%mm1 \n\t"
142  "punpckhwd %%mm1, %%mm1 \n\t"
143  "punpckhdq %%mm1, %%mm1 \n\t"
144  "movq %%mm1, (%0, %2) \n\t"
145  "movq %%mm1, 8(%0, %2) \n\t"
146  "add %1, %0 \n\t"
147  "cmp %3, %0 \n\t"
148  "jb 1b \n\t"
149  : "+r"(ptr)
150  : "r"((x86_reg)wrap), "r"((x86_reg)width), "r"(ptr + wrap * height)
151  );
152  } else {
153  av_assert1(w == 4);
154  __asm__ volatile (
155  "1: \n\t"
156  "movd (%0), %%mm0 \n\t"
157  "punpcklbw %%mm0, %%mm0 \n\t"
158  "punpcklwd %%mm0, %%mm0 \n\t"
159  "movd %%mm0, -4(%0) \n\t"
160  "movd -4(%0, %2), %%mm1 \n\t"
161  "punpcklbw %%mm1, %%mm1 \n\t"
162  "punpckhwd %%mm1, %%mm1 \n\t"
163  "punpckhdq %%mm1, %%mm1 \n\t"
164  "movd %%mm1, (%0, %2) \n\t"
165  "add %1, %0 \n\t"
166  "cmp %3, %0 \n\t"
167  "jb 1b \n\t"
168  : "+r" (ptr)
169  : "r" ((x86_reg) wrap), "r" ((x86_reg) width),
170  "r" (ptr + wrap * height));
171  }
172 
173  /* top and bottom (and hopefully also the corners) */
174  if (sides & EDGE_TOP) {
175  for (i = 0; i < h; i += 4) {
176  ptr = buf - (i + 1) * wrap - w;
177  __asm__ volatile (
178  "1: \n\t"
179  "movq (%1, %0), %%mm0 \n\t"
180  "movq %%mm0, (%0) \n\t"
181  "movq %%mm0, (%0, %2) \n\t"
182  "movq %%mm0, (%0, %2, 2) \n\t"
183  "movq %%mm0, (%0, %3) \n\t"
184  "add $8, %0 \n\t"
185  "cmp %4, %0 \n\t"
186  "jb 1b \n\t"
187  : "+r" (ptr)
188  : "r" ((x86_reg) buf - (x86_reg) ptr - w),
189  "r" ((x86_reg) - wrap), "r" ((x86_reg) - wrap * 3),
190  "r" (ptr + width + 2 * w));
191  }
192  }
193 
194  if (sides & EDGE_BOTTOM) {
195  for (i = 0; i < h; i += 4) {
196  ptr = last_line + (i + 1) * wrap - w;
197  __asm__ volatile (
198  "1: \n\t"
199  "movq (%1, %0), %%mm0 \n\t"
200  "movq %%mm0, (%0) \n\t"
201  "movq %%mm0, (%0, %2) \n\t"
202  "movq %%mm0, (%0, %2, 2) \n\t"
203  "movq %%mm0, (%0, %3) \n\t"
204  "add $8, %0 \n\t"
205  "cmp %4, %0 \n\t"
206  "jb 1b \n\t"
207  : "+r" (ptr)
208  : "r" ((x86_reg) last_line - (x86_reg) ptr - w),
209  "r" ((x86_reg) wrap), "r" ((x86_reg) wrap * 3),
210  "r" (ptr + width + 2 * w));
211  }
212  }
213 }
214 
215 #endif /* HAVE_INLINE_ASM */
216 
217 av_cold void ff_mpegvideoencdsp_init_x86(MpegvideoEncDSPContext *c,
218  AVCodecContext *avctx)
219 {
220  int cpu_flags = av_get_cpu_flags();
221 
222 #if ARCH_X86_32
223  if (EXTERNAL_MMX(cpu_flags)) {
224  c->pix_sum = ff_pix_sum16_mmx;
225  c->pix_norm1 = ff_pix_norm1_mmx;
226  }
227 
228  if (EXTERNAL_MMXEXT(cpu_flags)) {
229  c->pix_sum = ff_pix_sum16_mmxext;
230  }
231 #endif
232 
233  if (EXTERNAL_SSE2(cpu_flags)) {
234  c->pix_sum = ff_pix_sum16_sse2;
235  c->pix_norm1 = ff_pix_norm1_sse2;
236  }
237 
238  if (EXTERNAL_XOP(cpu_flags)) {
239  c->pix_sum = ff_pix_sum16_xop;
240  }
241 
242 #if HAVE_INLINE_ASM
243 
244  if (INLINE_MMX(cpu_flags)) {
245  if (!(avctx->flags & CODEC_FLAG_BITEXACT)) {
246  c->try_8x8basis = try_8x8basis_mmx;
247  }
248  c->add_8x8basis = add_8x8basis_mmx;
249 
250  if (avctx->bits_per_raw_sample <= 8) {
251  c->draw_edges = draw_edges_mmx;
252  }
253  }
254 
255  if (INLINE_AMD3DNOW(cpu_flags)) {
256  if (!(avctx->flags & CODEC_FLAG_BITEXACT)) {
257  c->try_8x8basis = try_8x8basis_3dnow;
258  }
259  c->add_8x8basis = add_8x8basis_3dnow;
260  }
261 
262 #if HAVE_SSSE3_INLINE
263  if (INLINE_SSSE3(cpu_flags)) {
264  if (!(avctx->flags & CODEC_FLAG_BITEXACT)) {
265  c->try_8x8basis = try_8x8basis_ssse3;
266  }
267  c->add_8x8basis = add_8x8basis_ssse3;
268  }
269 #endif /* HAVE_SSSE3_INLINE */
270 
271 #endif /* HAVE_INLINE_ASM */
272 }
Generated on Sun Mar 8 2015 02:35:03 for FFmpeg by   doxygen 1.8.2