1#ifndef __SOUND_PCM_PARAMS_H
2#define __SOUND_PCM_PARAMS_H
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25int snd_pcm_hw_param_first(struct snd_pcm_substream *pcm,
26 struct snd_pcm_hw_params *params,
27 snd_pcm_hw_param_t var, int *dir);
28int snd_pcm_hw_param_last(struct snd_pcm_substream *pcm,
29 struct snd_pcm_hw_params *params,
30 snd_pcm_hw_param_t var, int *dir);
31int snd_pcm_hw_param_value(const struct snd_pcm_hw_params *params,
32 snd_pcm_hw_param_t var, int *dir);
33
34#define SNDRV_MASK_BITS 64
35#define SNDRV_MASK_SIZE (SNDRV_MASK_BITS / 32)
36#define MASK_OFS(i) ((i) >> 5)
37#define MASK_BIT(i) (1U << ((i) & 31))
38
39static inline unsigned int ld2(u_int32_t v)
40{
41 unsigned r = 0;
42
43 if (v >= 0x10000) {
44 v >>= 16;
45 r += 16;
46 }
47 if (v >= 0x100) {
48 v >>= 8;
49 r += 8;
50 }
51 if (v >= 0x10) {
52 v >>= 4;
53 r += 4;
54 }
55 if (v >= 4) {
56 v >>= 2;
57 r += 2;
58 }
59 if (v >= 2)
60 r++;
61 return r;
62}
63
64static inline size_t snd_mask_sizeof(void)
65{
66 return sizeof(struct snd_mask);
67}
68
69static inline void snd_mask_none(struct snd_mask *mask)
70{
71 memset(mask, 0, sizeof(*mask));
72}
73
74static inline void snd_mask_any(struct snd_mask *mask)
75{
76 memset(mask, 0xff, SNDRV_MASK_SIZE * sizeof(u_int32_t));
77}
78
79static inline int snd_mask_empty(const struct snd_mask *mask)
80{
81 int i;
82 for (i = 0; i < SNDRV_MASK_SIZE; i++)
83 if (mask->bits[i])
84 return 0;
85 return 1;
86}
87
88static inline unsigned int snd_mask_min(const struct snd_mask *mask)
89{
90 int i;
91 for (i = 0; i < SNDRV_MASK_SIZE; i++) {
92 if (mask->bits[i])
93 return ffs(mask->bits[i]) - 1 + (i << 5);
94 }
95 return 0;
96}
97
98static inline unsigned int snd_mask_max(const struct snd_mask *mask)
99{
100 int i;
101 for (i = SNDRV_MASK_SIZE - 1; i >= 0; i--) {
102 if (mask->bits[i])
103 return ld2(mask->bits[i]) + (i << 5);
104 }
105 return 0;
106}
107
108static inline void snd_mask_set(struct snd_mask *mask, unsigned int val)
109{
110 mask->bits[MASK_OFS(val)] |= MASK_BIT(val);
111}
112
113static inline void snd_mask_reset(struct snd_mask *mask, unsigned int val)
114{
115 mask->bits[MASK_OFS(val)] &= ~MASK_BIT(val);
116}
117
118static inline void snd_mask_set_range(struct snd_mask *mask,
119 unsigned int from, unsigned int to)
120{
121 unsigned int i;
122 for (i = from; i <= to; i++)
123 mask->bits[MASK_OFS(i)] |= MASK_BIT(i);
124}
125
126static inline void snd_mask_reset_range(struct snd_mask *mask,
127 unsigned int from, unsigned int to)
128{
129 unsigned int i;
130 for (i = from; i <= to; i++)
131 mask->bits[MASK_OFS(i)] &= ~MASK_BIT(i);
132}
133
134static inline void snd_mask_leave(struct snd_mask *mask, unsigned int val)
135{
136 unsigned int v;
137 v = mask->bits[MASK_OFS(val)] & MASK_BIT(val);
138 snd_mask_none(mask);
139 mask->bits[MASK_OFS(val)] = v;
140}
141
142static inline void snd_mask_intersect(struct snd_mask *mask,
143 const struct snd_mask *v)
144{
145 int i;
146 for (i = 0; i < SNDRV_MASK_SIZE; i++)
147 mask->bits[i] &= v->bits[i];
148}
149
150static inline int snd_mask_eq(const struct snd_mask *mask,
151 const struct snd_mask *v)
152{
153 return ! memcmp(mask, v, SNDRV_MASK_SIZE * sizeof(u_int32_t));
154}
155
156static inline void snd_mask_copy(struct snd_mask *mask,
157 const struct snd_mask *v)
158{
159 *mask = *v;
160}
161
162static inline int snd_mask_test(const struct snd_mask *mask, unsigned int val)
163{
164 return mask->bits[MASK_OFS(val)] & MASK_BIT(val);
165}
166
167static inline int snd_mask_single(const struct snd_mask *mask)
168{
169 int i, c = 0;
170 for (i = 0; i < SNDRV_MASK_SIZE; i++) {
171 if (! mask->bits[i])
172 continue;
173 if (mask->bits[i] & (mask->bits[i] - 1))
174 return 0;
175 if (c)
176 return 0;
177 c++;
178 }
179 return 1;
180}
181
182static inline int snd_mask_refine(struct snd_mask *mask,
183 const struct snd_mask *v)
184{
185 struct snd_mask old;
186 snd_mask_copy(&old, mask);
187 snd_mask_intersect(mask, v);
188 if (snd_mask_empty(mask))
189 return -EINVAL;
190 return !snd_mask_eq(mask, &old);
191}
192
193static inline int snd_mask_refine_first(struct snd_mask *mask)
194{
195 if (snd_mask_single(mask))
196 return 0;
197 snd_mask_leave(mask, snd_mask_min(mask));
198 return 1;
199}
200
201static inline int snd_mask_refine_last(struct snd_mask *mask)
202{
203 if (snd_mask_single(mask))
204 return 0;
205 snd_mask_leave(mask, snd_mask_max(mask));
206 return 1;
207}
208
209static inline int snd_mask_refine_min(struct snd_mask *mask, unsigned int val)
210{
211 if (snd_mask_min(mask) >= val)
212 return 0;
213 snd_mask_reset_range(mask, 0, val - 1);
214 if (snd_mask_empty(mask))
215 return -EINVAL;
216 return 1;
217}
218
219static inline int snd_mask_refine_max(struct snd_mask *mask, unsigned int val)
220{
221 if (snd_mask_max(mask) <= val)
222 return 0;
223 snd_mask_reset_range(mask, val + 1, SNDRV_MASK_BITS);
224 if (snd_mask_empty(mask))
225 return -EINVAL;
226 return 1;
227}
228
229static inline int snd_mask_refine_set(struct snd_mask *mask, unsigned int val)
230{
231 int changed;
232 changed = !snd_mask_single(mask);
233 snd_mask_leave(mask, val);
234 if (snd_mask_empty(mask))
235 return -EINVAL;
236 return changed;
237}
238
239static inline int snd_mask_value(const struct snd_mask *mask)
240{
241 return snd_mask_min(mask);
242}
243
244static inline void snd_interval_any(struct snd_interval *i)
245{
246 i->min = 0;
247 i->openmin = 0;
248 i->max = UINT_MAX;
249 i->openmax = 0;
250 i->integer = 0;
251 i->empty = 0;
252}
253
254static inline void snd_interval_none(struct snd_interval *i)
255{
256 i->empty = 1;
257}
258
259static inline int snd_interval_checkempty(const struct snd_interval *i)
260{
261 return (i->min > i->max ||
262 (i->min == i->max && (i->openmin || i->openmax)));
263}
264
265static inline int snd_interval_empty(const struct snd_interval *i)
266{
267 return i->empty;
268}
269
270static inline int snd_interval_single(const struct snd_interval *i)
271{
272 return (i->min == i->max ||
273 (i->min + 1 == i->max && i->openmax));
274}
275
276static inline int snd_interval_value(const struct snd_interval *i)
277{
278 return i->min;
279}
280
281static inline int snd_interval_min(const struct snd_interval *i)
282{
283 return i->min;
284}
285
286static inline int snd_interval_max(const struct snd_interval *i)
287{
288 unsigned int v;
289 v = i->max;
290 if (i->openmax)
291 v--;
292 return v;
293}
294
295static inline int snd_interval_test(const struct snd_interval *i, unsigned int val)
296{
297 return !((i->min > val || (i->min == val && i->openmin) ||
298 i->max < val || (i->max == val && i->openmax)));
299}
300
301static inline void snd_interval_copy(struct snd_interval *d, const struct snd_interval *s)
302{
303 *d = *s;
304}
305
306static inline int snd_interval_setinteger(struct snd_interval *i)
307{
308 if (i->integer)
309 return 0;
310 if (i->openmin && i->openmax && i->min == i->max)
311 return -EINVAL;
312 i->integer = 1;
313 return 1;
314}
315
316static inline int snd_interval_eq(const struct snd_interval *i1, const struct snd_interval *i2)
317{
318 if (i1->empty)
319 return i2->empty;
320 if (i2->empty)
321 return i1->empty;
322 return i1->min == i2->min && i1->openmin == i2->openmin &&
323 i1->max == i2->max && i1->openmax == i2->openmax;
324}
325
326static inline unsigned int add(unsigned int a, unsigned int b)
327{
328 if (a >= UINT_MAX - b)
329 return UINT_MAX;
330 return a + b;
331}
332
333static inline unsigned int sub(unsigned int a, unsigned int b)
334{
335 if (a > b)
336 return a - b;
337 return 0;
338}
339
340#endif
341
342
