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sound
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pcm_local.h

pcm_local.h 2.0 KB
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  1. /*
    2. 

  2.  * pcm_local.h - a local header file for snd-pcm module.
    3. 

  3.  *
    4. 

  4.  * Copyright (c) Takashi Sakamoto <o-takashi@sakamocchi.jp>
    5. 

  5.  *
    6. 

  6.  * Licensed under the terms of the GNU General Public License, version 2.
    7. 

  7.  */
    8. 

  8. 

  9. #ifndef __SOUND_CORE_PCM_LOCAL_H
    10. 

  10. #define __SOUND_CORE_PCM_LOCAL_H
    11. 

  11. 

  12. extern const struct snd_pcm_hw_constraint_list snd_pcm_known_rates;
    13. 

  13. 

  14. void snd_interval_mul(const struct snd_interval *a,
    15. 

  15. 		      const struct snd_interval *b, struct snd_interval *c);
    16. 

  16. void snd_interval_div(const struct snd_interval *a,
    17. 

  17. 		      const struct snd_interval *b, struct snd_interval *c);
    18. 

  18. void snd_interval_muldivk(const struct snd_interval *a,
    19. 

  19. 			  const struct snd_interval *b,
    20. 

  20. 			  unsigned int k, struct snd_interval *c);
    21. 

  21. void snd_interval_mulkdiv(const struct snd_interval *a, unsigned int k,
    22. 

  22. 			  const struct snd_interval *b, struct snd_interval *c);
    23. 

  23. 

  24. int snd_pcm_hw_constraints_init(struct snd_pcm_substream *substream);
    25. 

  25. int snd_pcm_hw_constraints_complete(struct snd_pcm_substream *substream);
    26. 

  26. 

  27. int snd_pcm_hw_constraint_mask(struct snd_pcm_runtime *runtime,
    28. 

  28. 			       snd_pcm_hw_param_t var, u_int32_t mask);
    29. 

  29. 

  30. int pcm_lib_apply_appl_ptr(struct snd_pcm_substream *substream,
    31. 

  31. 			   snd_pcm_uframes_t appl_ptr);
    32. 

  32. int snd_pcm_update_state(struct snd_pcm_substream *substream,
    33. 

  33. 			 struct snd_pcm_runtime *runtime);
    34. 

  34. int snd_pcm_update_hw_ptr(struct snd_pcm_substream *substream);
    35. 

  35. 

  36. void snd_pcm_playback_silence(struct snd_pcm_substream *substream,
    37. 

  37. 			      snd_pcm_uframes_t new_hw_ptr);
    38. 

  38. 

  39. #ifdef CONFIG_SND_PCM_TIMER
    40. 

  40. void snd_pcm_timer_resolution_change(struct snd_pcm_substream *substream);
    41. 

  41. void snd_pcm_timer_init(struct snd_pcm_substream *substream);
    42. 

  42. void snd_pcm_timer_done(struct snd_pcm_substream *substream);
    43. 

  43. #else
    44. 

  44. static inline void
    45. 

  45. snd_pcm_timer_resolution_change(struct snd_pcm_substream *substream) {}
    46. 

  46. static inline void snd_pcm_timer_init(struct snd_pcm_substream *substream) {}
    47. 

  47. static inline void snd_pcm_timer_done(struct snd_pcm_substream *substream) {}
    48. 

  48. #endif
    49. 

  49. 

  50. #endif	/* __SOUND_CORE_PCM_LOCAL_H */
    51. 

  51.