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- /* SPDX-License-Identifier: GPL-2.0-only */
- /*
- * pcm_local.h - a local header file for snd-pcm module.
- *
- * Copyright (c) Takashi Sakamoto <o-takashi@sakamocchi.jp>
- */
- #ifndef __SOUND_CORE_PCM_LOCAL_H
- #define __SOUND_CORE_PCM_LOCAL_H
- extern const struct snd_pcm_hw_constraint_list snd_pcm_known_rates;
- void snd_interval_mul(const struct snd_interval *a,
- const struct snd_interval *b, struct snd_interval *c);
- void snd_interval_div(const struct snd_interval *a,
- const struct snd_interval *b, struct snd_interval *c);
- void snd_interval_muldivk(const struct snd_interval *a,
- const struct snd_interval *b,
- unsigned int k, struct snd_interval *c);
- void snd_interval_mulkdiv(const struct snd_interval *a, unsigned int k,
- const struct snd_interval *b, struct snd_interval *c);
- int snd_pcm_hw_constraint_mask(struct snd_pcm_runtime *runtime,
- snd_pcm_hw_param_t var, u_int32_t mask);
- int pcm_lib_apply_appl_ptr(struct snd_pcm_substream *substream,
- snd_pcm_uframes_t appl_ptr);
- int snd_pcm_update_state(struct snd_pcm_substream *substream,
- struct snd_pcm_runtime *runtime);
- int snd_pcm_update_hw_ptr(struct snd_pcm_substream *substream);
- void snd_pcm_playback_silence(struct snd_pcm_substream *substream,
- snd_pcm_uframes_t new_hw_ptr);
- static inline snd_pcm_uframes_t
- snd_pcm_avail(struct snd_pcm_substream *substream)
- {
- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
- return snd_pcm_playback_avail(substream->runtime);
- else
- return snd_pcm_capture_avail(substream->runtime);
- }
- static inline snd_pcm_uframes_t
- snd_pcm_hw_avail(struct snd_pcm_substream *substream)
- {
- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
- return snd_pcm_playback_hw_avail(substream->runtime);
- else
- return snd_pcm_capture_hw_avail(substream->runtime);
- }
- #ifdef CONFIG_SND_PCM_TIMER
- void snd_pcm_timer_resolution_change(struct snd_pcm_substream *substream);
- void snd_pcm_timer_init(struct snd_pcm_substream *substream);
- void snd_pcm_timer_done(struct snd_pcm_substream *substream);
- #else
- static inline void
- snd_pcm_timer_resolution_change(struct snd_pcm_substream *substream) {}
- static inline void snd_pcm_timer_init(struct snd_pcm_substream *substream) {}
- static inline void snd_pcm_timer_done(struct snd_pcm_substream *substream) {}
- #endif
- void __snd_pcm_xrun(struct snd_pcm_substream *substream);
- void snd_pcm_group_init(struct snd_pcm_group *group);
- void snd_pcm_sync_stop(struct snd_pcm_substream *substream, bool sync_irq);
- #ifdef CONFIG_SND_DMA_SGBUF
- struct page *snd_pcm_sgbuf_ops_page(struct snd_pcm_substream *substream,
- unsigned long offset);
- #endif
- #define PCM_RUNTIME_CHECK(sub) snd_BUG_ON(!(sub) || !(sub)->runtime)
- #endif /* __SOUND_CORE_PCM_LOCAL_H */
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