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da607e19 | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
2c4842d3 TS |
2 | /* |
3 | * pcm_local.h - a local header file for snd-pcm module. | |
4 | * | |
5 | * Copyright (c) Takashi Sakamoto <o-takashi@sakamocchi.jp> | |
2c4842d3 TS |
6 | */ |
7 | ||
8 | #ifndef __SOUND_CORE_PCM_LOCAL_H | |
9 | #define __SOUND_CORE_PCM_LOCAL_H | |
10 | ||
11 | extern const struct snd_pcm_hw_constraint_list snd_pcm_known_rates; | |
12 | ||
13 | void snd_interval_mul(const struct snd_interval *a, | |
14 | const struct snd_interval *b, struct snd_interval *c); | |
15 | void snd_interval_div(const struct snd_interval *a, | |
16 | const struct snd_interval *b, struct snd_interval *c); | |
17 | void snd_interval_muldivk(const struct snd_interval *a, | |
18 | const struct snd_interval *b, | |
19 | unsigned int k, struct snd_interval *c); | |
20 | void snd_interval_mulkdiv(const struct snd_interval *a, unsigned int k, | |
21 | const struct snd_interval *b, struct snd_interval *c); | |
22 | ||
23 | int snd_pcm_hw_constraints_init(struct snd_pcm_substream *substream); | |
24 | int snd_pcm_hw_constraints_complete(struct snd_pcm_substream *substream); | |
25 | ||
2c4842d3 TS |
26 | int snd_pcm_hw_constraint_mask(struct snd_pcm_runtime *runtime, |
27 | snd_pcm_hw_param_t var, u_int32_t mask); | |
28 | ||
66e01a5c TS |
29 | int pcm_lib_apply_appl_ptr(struct snd_pcm_substream *substream, |
30 | snd_pcm_uframes_t appl_ptr); | |
2c4842d3 TS |
31 | int snd_pcm_update_state(struct snd_pcm_substream *substream, |
32 | struct snd_pcm_runtime *runtime); | |
33 | int snd_pcm_update_hw_ptr(struct snd_pcm_substream *substream); | |
34 | ||
35 | void snd_pcm_playback_silence(struct snd_pcm_substream *substream, | |
36 | snd_pcm_uframes_t new_hw_ptr); | |
37 | ||
763e5067 TI |
38 | static inline snd_pcm_uframes_t |
39 | snd_pcm_avail(struct snd_pcm_substream *substream) | |
40 | { | |
41 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
42 | return snd_pcm_playback_avail(substream->runtime); | |
43 | else | |
44 | return snd_pcm_capture_avail(substream->runtime); | |
45 | } | |
46 | ||
47 | static inline snd_pcm_uframes_t | |
48 | snd_pcm_hw_avail(struct snd_pcm_substream *substream) | |
49 | { | |
50 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
51 | return snd_pcm_playback_hw_avail(substream->runtime); | |
52 | else | |
53 | return snd_pcm_capture_hw_avail(substream->runtime); | |
54 | } | |
55 | ||
2c4842d3 TS |
56 | #ifdef CONFIG_SND_PCM_TIMER |
57 | void snd_pcm_timer_resolution_change(struct snd_pcm_substream *substream); | |
58 | void snd_pcm_timer_init(struct snd_pcm_substream *substream); | |
59 | void snd_pcm_timer_done(struct snd_pcm_substream *substream); | |
60 | #else | |
61 | static inline void | |
62 | snd_pcm_timer_resolution_change(struct snd_pcm_substream *substream) {} | |
63 | static inline void snd_pcm_timer_init(struct snd_pcm_substream *substream) {} | |
64 | static inline void snd_pcm_timer_done(struct snd_pcm_substream *substream) {} | |
65 | #endif | |
66 | ||
9cd641ed | 67 | void __snd_pcm_xrun(struct snd_pcm_substream *substream); |
73365cb1 | 68 | void snd_pcm_group_init(struct snd_pcm_group *group); |
9cd641ed | 69 | |
2c4842d3 | 70 | #endif /* __SOUND_CORE_PCM_LOCAL_H */ |