projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 <[email protected]> | |
| 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 | ||
| 2c4842d3 TS |
23 | int snd_pcm_hw_constraint_mask(struct snd_pcm_runtime *runtime, |
| 24 | snd_pcm_hw_param_t var, u_int32_t mask); | |
| 25 | ||
| 66e01a5c TS |
26 | int pcm_lib_apply_appl_ptr(struct snd_pcm_substream *substream, |
| 27 | snd_pcm_uframes_t appl_ptr); | |
| 2c4842d3 TS |
28 | int snd_pcm_update_state(struct snd_pcm_substream *substream, |
| 29 | struct snd_pcm_runtime *runtime); | |
| 30 | int snd_pcm_update_hw_ptr(struct snd_pcm_substream *substream); | |
| 31 | ||
| 32 | void snd_pcm_playback_silence(struct snd_pcm_substream *substream, | |
| 33 | snd_pcm_uframes_t new_hw_ptr); | |
| 34 | ||
| 763e5067 TI |
35 | static inline snd_pcm_uframes_t |
| 36 | snd_pcm_avail(struct snd_pcm_substream *substream) | |
| 37 | { | |
| 38 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
| 39 | return snd_pcm_playback_avail(substream->runtime); | |
| 40 | else | |
| 41 | return snd_pcm_capture_avail(substream->runtime); | |
| 42 | } | |
| 43 | ||
| 44 | static inline snd_pcm_uframes_t | |
| 45 | snd_pcm_hw_avail(struct snd_pcm_substream *substream) | |
| 46 | { | |
| 47 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
| 48 | return snd_pcm_playback_hw_avail(substream->runtime); | |
| 49 | else | |
| 50 | return snd_pcm_capture_hw_avail(substream->runtime); | |
| 51 | } | |
| 52 | ||
| 2c4842d3 TS |
53 | #ifdef CONFIG_SND_PCM_TIMER |
| 54 | void snd_pcm_timer_resolution_change(struct snd_pcm_substream *substream); | |
| 55 | void snd_pcm_timer_init(struct snd_pcm_substream *substream); | |
| 56 | void snd_pcm_timer_done(struct snd_pcm_substream *substream); | |
| 57 | #else | |
| 58 | static inline void | |
| 59 | snd_pcm_timer_resolution_change(struct snd_pcm_substream *substream) {} | |
| 60 | static inline void snd_pcm_timer_init(struct snd_pcm_substream *substream) {} | |
| 61 | static inline void snd_pcm_timer_done(struct snd_pcm_substream *substream) {} | |
| 62 | #endif | |
| 63 | ||
| 9cd641ed | 64 | void __snd_pcm_xrun(struct snd_pcm_substream *substream); |
| 73365cb1 | 65 | void snd_pcm_group_init(struct snd_pcm_group *group); |
| 9cd641ed | 66 | |
| fc7af6bc TI |
67 | #ifdef CONFIG_SND_DMA_SGBUF |
| 68 | struct page *snd_pcm_sgbuf_ops_page(struct snd_pcm_substream *substream, | |
| 69 | unsigned long offset); | |
| 70 | #endif | |
| 71 | ||
| 0821fd77 TI |
72 | #define PCM_RUNTIME_CHECK(sub) snd_BUG_ON(!(sub) || !(sub)->runtime) |
| 73 | ||
| 2c4842d3 | 74 | #endif /* __SOUND_CORE_PCM_LOCAL_H */ |