FFmpeg
float_dsp.c
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1 /*
2  * This file is part of FFmpeg.
3  *
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5  * it under the terms of the GNU General Public License as published by
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8  *
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12  * GNU General Public License for more details.
13  *
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15  * with FFmpeg; if not, write to the Free Software Foundation, Inc.,
16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
17  */
18 
19 #include "config.h"
20 
21 #include <float.h>
22 #include <stdint.h>
23 
24 #include "libavutil/float_dsp.h"
25 #include "libavutil/internal.h"
26 #include "checkasm.h"
27 
28 #define LEN 256
29 
30 #define randomize_buffer(buf) \
31 do { \
32  int i; \
33  double bmg[2], stddev = 10.0, mean = 0.0; \
34  \
35  for (i = 0; i < LEN; i += 2) { \
36  av_bmg_get(&checkasm_lfg, bmg); \
37  buf[i] = bmg[0] * stddev + mean; \
38  buf[i + 1] = bmg[1] * stddev + mean; \
39  } \
40 } while(0);
41 
42 static void test_vector_fmul(const float *src0, const float *src1)
43 {
44  LOCAL_ALIGNED_32(float, cdst, [LEN]);
45  LOCAL_ALIGNED_32(float, odst, [LEN]);
46  int i;
47 
48  declare_func(void, float *dst, const float *src0, const float *src1,
49  int len);
50 
51  call_ref(cdst, src0, src1, LEN);
52  call_new(odst, src0, src1, LEN);
53  for (i = 0; i < LEN; i++) {
54  if (!float_near_abs_eps(cdst[i], odst[i], FLT_EPSILON)) {
55  fprintf(stderr, "%d: %- .12f - %- .12f = % .12g\n",
56  i, cdst[i], odst[i], cdst[i] - odst[i]);
57  fail();
58  break;
59  }
60  }
61  bench_new(odst, src0, src1, LEN);
62 }
63 
64 static void test_vector_dmul(const double *src0, const double *src1)
65 {
66  LOCAL_ALIGNED_32(double, cdst, [LEN]);
67  LOCAL_ALIGNED_32(double, odst, [LEN]);
68  int i;
69 
70  declare_func(void, double *dst, const double *src0, const double *src1,
71  int len);
72 
73  call_ref(cdst, src0, src1, LEN);
74  call_new(odst, src0, src1, LEN);
75  for (i = 0; i < LEN; i++) {
76  if (!double_near_abs_eps(cdst[i], odst[i], DBL_EPSILON)) {
77  fprintf(stderr, "%d: %- .12f - %- .12f = % .12g\n",
78  i, cdst[i], odst[i], cdst[i] - odst[i]);
79  fail();
80  break;
81  }
82  }
83  bench_new(odst, src0, src1, LEN);
84 }
85 
86 #define ARBITRARY_FMUL_ADD_CONST 0.005
87 static void test_vector_fmul_add(const float *src0, const float *src1, const float *src2)
88 {
89  LOCAL_ALIGNED_32(float, cdst, [LEN]);
90  LOCAL_ALIGNED_32(float, odst, [LEN]);
91  int i;
92 
93  declare_func(void, float *dst, const float *src0, const float *src1,
94  const float *src2, int len);
95 
96  call_ref(cdst, src0, src1, src2, LEN);
97  call_new(odst, src0, src1, src2, LEN);
98  for (i = 0; i < LEN; i++) {
99  if (!float_near_abs_eps(cdst[i], odst[i], ARBITRARY_FMUL_ADD_CONST)) {
100  fprintf(stderr, "%d: %- .12f - %- .12f = % .12g\n",
101  i, cdst[i], odst[i], cdst[i] - odst[i]);
102  fail();
103  break;
104  }
105  }
106  bench_new(odst, src0, src1, src2, LEN);
107 }
108 
109 static void test_vector_fmul_scalar(const float *src0, const float *src1)
110 {
111  LOCAL_ALIGNED_16(float, cdst, [LEN]);
112  LOCAL_ALIGNED_16(float, odst, [LEN]);
113  int i;
114 
115  declare_func(void, float *dst, const float *src, float mul, int len);
116 
117  call_ref(cdst, src0, src1[0], LEN);
118  call_new(odst, src0, src1[0], LEN);
119  for (i = 0; i < LEN; i++) {
120  if (!float_near_abs_eps(cdst[i], odst[i], FLT_EPSILON)) {
121  fprintf(stderr, "%d: %- .12f - %- .12f = % .12g\n",
122  i, cdst[i], odst[i], cdst[i] - odst[i]);
123  fail();
124  break;
125  }
126  }
127  bench_new(odst, src0, src1[0], LEN);
128 }
129 
130 #define ARBITRARY_FMUL_WINDOW_CONST 0.008
131 static void test_vector_fmul_window(const float *src0, const float *src1, const float *win)
132 {
133  LOCAL_ALIGNED_16(float, cdst, [LEN]);
134  LOCAL_ALIGNED_16(float, odst, [LEN]);
135  int i;
136 
137  declare_func(void, float *dst, const float *src0, const float *src1,
138  const float *win, int len);
139 
140  call_ref(cdst, src0, src1, win, LEN / 2);
141  call_new(odst, src0, src1, win, LEN / 2);
142  for (i = 0; i < LEN; i++) {
143  if (!float_near_abs_eps(cdst[i], odst[i], ARBITRARY_FMUL_WINDOW_CONST)) {
144  fprintf(stderr, "%d: %- .12f - %- .12f = % .12g\n",
145  i, cdst[i], odst[i], cdst[i] - odst[i]);
146  fail();
147  break;
148  }
149  }
150  bench_new(odst, src0, src1, win, LEN / 2);
151 }
152 
153 #define ARBITRARY_FMAC_SCALAR_CONST 0.005
154 static void test_vector_fmac_scalar(const float *src0, const float *src1, const float *src2)
155 {
156  LOCAL_ALIGNED_32(float, cdst, [LEN]);
157  LOCAL_ALIGNED_32(float, odst, [LEN]);
158  int i;
159 
160  declare_func(void, float *dst, const float *src, float mul, int len);
161 
162  memcpy(cdst, src2, LEN * sizeof(*src2));
163  memcpy(odst, src2, LEN * sizeof(*src2));
164 
165  call_ref(cdst, src0, src1[0], LEN);
166  call_new(odst, src0, src1[0], LEN);
167  for (i = 0; i < LEN; i++) {
168  if (!float_near_abs_eps(cdst[i], odst[i], ARBITRARY_FMAC_SCALAR_CONST)) {
169  fprintf(stderr, "%d: %- .12f - %- .12f = % .12g\n",
170  i, cdst[i], odst[i], cdst[i] - odst[i]);
171  fail();
172  break;
173  }
174  }
175  memcpy(odst, src2, LEN * sizeof(*src2));
176  bench_new(odst, src0, src1[0], LEN);
177 }
178 
179 static void test_vector_dmul_scalar(const double *src0, const double *src1)
180 {
181  LOCAL_ALIGNED_32(double, cdst, [LEN]);
182  LOCAL_ALIGNED_32(double, odst, [LEN]);
183  int i;
184 
185  declare_func(void, double *dst, const double *src, double mul, int len);
186 
187  call_ref(cdst, src0, src1[0], LEN);
188  call_new(odst, src0, src1[0], LEN);
189  for (i = 0; i < LEN; i++) {
190  double t = fabs(src1[0]) + fabs(src0[i]) + fabs(src1[0] * src0[i]) + 1.0;
191  if (!double_near_abs_eps(cdst[i], odst[i], t * 2 * DBL_EPSILON)) {
192  fprintf(stderr, "%d: %- .12f - %- .12f = % .12g\n", i,
193  cdst[i], odst[i], cdst[i] - odst[i]);
194  fail();
195  break;
196  }
197  }
198  bench_new(odst, src0, src1[0], LEN);
199 }
200 
201 #define ARBITRARY_DMAC_SCALAR_CONST 0.005
202 static void test_vector_dmac_scalar(const double *src0, const double *src1, const double *src2)
203 {
204  LOCAL_ALIGNED_32(double, cdst, [LEN]);
205  LOCAL_ALIGNED_32(double, odst, [LEN]);
206  int i;
207 
208  declare_func(void, double *dst, const double *src, double mul, int len);
209 
210  memcpy(cdst, src2, LEN * sizeof(*src2));
211  memcpy(odst, src2, LEN * sizeof(*src2));
212  call_ref(cdst, src0, src1[0], LEN);
213  call_new(odst, src0, src1[0], LEN);
214  for (i = 0; i < LEN; i++) {
215  if (!double_near_abs_eps(cdst[i], odst[i], ARBITRARY_DMAC_SCALAR_CONST)) {
216  fprintf(stderr, "%d: %- .12f - %- .12f = % .12g\n",
217  i, cdst[i], odst[i], cdst[i] - odst[i]);
218  fail();
219  break;
220  }
221  }
222  memcpy(odst, src2, LEN * sizeof(*src2));
223  bench_new(odst, src0, src1[0], LEN);
224 }
225 
226 static void test_butterflies_float(const float *src0, const float *src1)
227 {
228  LOCAL_ALIGNED_16(float, cdst, [LEN]);
229  LOCAL_ALIGNED_16(float, odst, [LEN]);
230  LOCAL_ALIGNED_16(float, cdst1, [LEN]);
231  LOCAL_ALIGNED_16(float, odst1, [LEN]);
232  int i;
233 
234  declare_func(void, float *av_restrict src0, float *av_restrict src1,
235  int len);
236 
237  memcpy(cdst, src0, LEN * sizeof(*src0));
238  memcpy(cdst1, src1, LEN * sizeof(*src1));
239  memcpy(odst, src0, LEN * sizeof(*src0));
240  memcpy(odst1, src1, LEN * sizeof(*src1));
241 
242  call_ref(cdst, cdst1, LEN);
243  call_new(odst, odst1, LEN);
244  for (i = 0; i < LEN; i++) {
245  if (!float_near_abs_eps(cdst[i], odst[i], FLT_EPSILON) ||
246  !float_near_abs_eps(cdst1[i], odst1[i], FLT_EPSILON)) {
247  fprintf(stderr, "%d: %- .12f - %- .12f = % .12g\n",
248  i, cdst[i], odst[i], cdst[i] - odst[i]);
249  fprintf(stderr, "%d: %- .12f - %- .12f = % .12g\n",
250  i, cdst1[i], odst1[i], cdst1[i] - odst1[i]);
251  fail();
252  break;
253  }
254  }
255  memcpy(odst, src0, LEN * sizeof(*src0));
256  memcpy(odst1, src1, LEN * sizeof(*src1));
257  bench_new(odst, odst1, LEN);
258 }
259 
260 #define ARBITRARY_SCALARPRODUCT_CONST 0.2
261 static void test_scalarproduct_float(const float *src0, const float *src1)
262 {
263  float cprod, oprod;
264 
265  declare_func_float(float, const float *src0, const float *src1, int len);
266 
267  cprod = call_ref(src0, src1, LEN);
268  oprod = call_new(src0, src1, LEN);
269  if (!float_near_abs_eps(cprod, oprod, ARBITRARY_SCALARPRODUCT_CONST)) {
270  fprintf(stderr, "%- .12f - %- .12f = % .12g\n",
271  cprod, oprod, cprod - oprod);
272  fail();
273  }
274  bench_new(src0, src1, LEN);
275 }
276 
277 void checkasm_check_float_dsp(void)
278 {
279  LOCAL_ALIGNED_32(float, src0, [LEN]);
280  LOCAL_ALIGNED_32(float, src1, [LEN]);
281  LOCAL_ALIGNED_32(float, src2, [LEN]);
282  LOCAL_ALIGNED_16(float, src3, [LEN]);
283  LOCAL_ALIGNED_16(float, src4, [LEN]);
284  LOCAL_ALIGNED_16(float, src5, [LEN]);
285  LOCAL_ALIGNED_32(double, dbl_src0, [LEN]);
286  LOCAL_ALIGNED_32(double, dbl_src1, [LEN]);
287  LOCAL_ALIGNED_32(double, dbl_src2, [LEN]);
288  AVFloatDSPContext *fdsp = avpriv_float_dsp_alloc(1);
289 
290  if (!fdsp) {
291  fprintf(stderr, "floatdsp: Out of memory error\n");
292  return;
293  }
294 
295  randomize_buffer(src0);
296  randomize_buffer(src1);
297  randomize_buffer(src2);
298  randomize_buffer(src3);
299  randomize_buffer(src4);
300  randomize_buffer(src5);
301  randomize_buffer(dbl_src0);
302  randomize_buffer(dbl_src1);
303  randomize_buffer(dbl_src2);
304 
305  if (check_func(fdsp->vector_fmul, "vector_fmul"))
306  test_vector_fmul(src0, src1);
307  if (check_func(fdsp->vector_fmul_add, "vector_fmul_add"))
308  test_vector_fmul_add(src0, src1, src2);
309  if (check_func(fdsp->vector_fmul_scalar, "vector_fmul_scalar"))
310  test_vector_fmul_scalar(src3, src4);
311  if (check_func(fdsp->vector_fmul_reverse, "vector_fmul_reverse"))
312  test_vector_fmul(src0, src1);
313  if (check_func(fdsp->vector_fmul_window, "vector_fmul_window"))
314  test_vector_fmul_window(src3, src4, src5);
315  report("vector_fmul");
316  if (check_func(fdsp->vector_fmac_scalar, "vector_fmac_scalar"))
317  test_vector_fmac_scalar(src0, src1, src2);
318  report("vector_fmac");
319  if (check_func(fdsp->vector_dmul, "vector_dmul"))
320  test_vector_dmul(dbl_src0, dbl_src1);
321  if (check_func(fdsp->vector_dmul_scalar, "vector_dmul_scalar"))
322  test_vector_dmul_scalar(dbl_src0, dbl_src1);
323  report("vector_dmul");
324  if (check_func(fdsp->vector_dmac_scalar, "vector_dmac_scalar"))
325  test_vector_dmac_scalar(dbl_src0, dbl_src1, dbl_src2);
326  report("vector_dmac");
327  if (check_func(fdsp->butterflies_float, "butterflies_float"))
328  test_butterflies_float(src3, src4);
329  report("butterflies_float");
330  if (check_func(fdsp->scalarproduct_float, "scalarproduct_float"))
331  test_scalarproduct_float(src3, src4);
332  report("scalarproduct_float");
333 
334  av_freep(&fdsp);
335 }
AVFloatDSPContext::vector_fmul_reverse
void(* vector_fmul_reverse)(float *dst, const float *src0, const float *src1, int len)
Calculate the entry wise product of two vectors of floats, and store the result in a vector of floats...
Definition: float_dsp.h:154
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Definition: float_dsp.c:30
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Definition: checkasm.c:306
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Definition: checkasm.h:111
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Definition: checkasm.h:116
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static void test_vector_dmac_scalar(const double *src0, const double *src1, const double *src2)
Definition: float_dsp.c:202
AVFloatDSPContext::vector_dmul
void(* vector_dmul)(double *dst, const double *src0, const double *src1, int len)
Calculate the entry wise product of two vectors of doubles and store the result in a vector of double...
Definition: float_dsp.h:190
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Definition: checkasm.h:126
AVFloatDSPContext::butterflies_float
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Calculate the sum and difference of two vectors of floats.
Definition: float_dsp.h:164
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Definition: float_dsp.c:86
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Definition: checkasm.c:346
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Definition: checkasm.h:120
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Definition: float_dsp.c:277
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Definition: vp8dsp.c:254
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Calculate the scalar product of two vectors of floats.
Definition: float_dsp.h:175
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static void test_butterflies_float(const float *src0, const float *src1)
Definition: float_dsp.c:226
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Definition: float_dsp.c:109
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Definition: checkasm.h:193
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Definition: float_dsp.c:42
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Multiply a vector of floats by a scalar float.
Definition: float_dsp.h:85
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#define ARBITRARY_FMAC_SCALAR_CONST
Definition: float_dsp.c:153
float_dsp.h
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void(* vector_fmul)(float *dst, const float *src0, const float *src1, int len)
Calculate the entry wise product of two vectors of floats and store the result in a vector of floats.
Definition: float_dsp.h:38
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Definition: float_dsp.c:130
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Definition: float_dsp.c:179
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Definition: float_dsp.h:24
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Definition: float_dsp.c:87
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Definition: checkasm.h:253
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AVFloatDSPContext::vector_fmac_scalar
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Multiply a vector of floats by a scalar float and add to destination vector.
Definition: float_dsp.h:54
internal.h
AVFloatDSPContext::vector_fmul_add
void(* vector_fmul_add)(float *dst, const float *src0, const float *src1, const float *src2, int len)
Calculate the entry wise product of two vectors of floats, add a third vector of floats and store the...
Definition: float_dsp.h:137
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Definition: float_dsp.c:131
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Multiply a vector of double by a scalar double.
Definition: float_dsp.h:100
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Definition: float_dsp.c:261
config.h
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Overlap/add with window function.
Definition: float_dsp.h:119
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Definition: checkasm.h:115
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Definition: internal.h:131
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Definition: tableprint_vlc.h:35
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Allocate a float DSP context.
Definition: float_dsp.c:135
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#define LOCAL_ALIGNED_32(t, v,...)
Definition: internal.h:137
AVFloatDSPContext::vector_dmac_scalar
void(* vector_dmac_scalar)(double *dst, const double *src, double mul, int len)
Multiply a vector of doubles by a scalar double and add to destination vector.
Definition: float_dsp.h:70
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static void test_vector_dmul(const double *src0, const double *src1)
Definition: float_dsp.c:64
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Definition: float_dsp.c:154
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