projects / linux-2.6-block.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 <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 | |
| fc7af6bc TI |
70 | #ifdef CONFIG_SND_DMA_SGBUF |
| 71 | struct page *snd_pcm_sgbuf_ops_page(struct snd_pcm_substream *substream, | |
| 72 | unsigned long offset); | |
| 73 | #endif | |
| 74 | ||
| 2c4842d3 | 75 | #endif /* __SOUND_CORE_PCM_LOCAL_H */ |