From 3bf75f9b90c981f18f27a0d35a44f488ab68c8ea Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Mon, 27 Mar 2006 16:40:49 +0200 Subject: [ALSA] Clean up PCM codes (take 2) - Clean up initialization and destruction of substream instance Now snd_pcm_open_substream() alone does most initialization jobs. Add pcm_release callback for cleaning up at snd_pcm_release_substream() - Tidy up PCM oss code Signed-off-by: Takashi Iwai --- include/sound/pcm.h | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) (limited to 'include/sound/pcm.h') diff --git a/include/sound/pcm.h b/include/sound/pcm.h index 7cf6a30c1526..66b1f08b42b9 100644 --- a/include/sound/pcm.h +++ b/include/sound/pcm.h @@ -369,6 +369,7 @@ struct snd_pcm_substream { /* -- assigned files -- */ struct snd_pcm_file *file; struct file *ffile; + void (*pcm_release)(struct snd_pcm_substream *); #if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) /* -- OSS things -- */ struct snd_pcm_oss_substream oss; @@ -381,13 +382,10 @@ struct snd_pcm_substream { struct snd_info_entry *proc_prealloc_entry; /* misc flags */ unsigned int no_mmap_ctrl: 1; + unsigned int hw_opened: 1; }; -#if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) -#define SUBSTREAM_BUSY(substream) ((substream)->file != NULL || ((substream)->oss.file != NULL)) -#else #define SUBSTREAM_BUSY(substream) ((substream)->file != NULL) -#endif struct snd_pcm_str { @@ -468,8 +466,12 @@ int snd_pcm_suspend(struct snd_pcm_substream *substream); int snd_pcm_suspend_all(struct snd_pcm *pcm); #endif int snd_pcm_kernel_ioctl(struct snd_pcm_substream *substream, unsigned int cmd, void *arg); -int snd_pcm_open_substream(struct snd_pcm *pcm, int stream, struct snd_pcm_substream **rsubstream); +int snd_pcm_open_substream(struct snd_pcm *pcm, int stream, struct file *file, + struct snd_pcm_substream **rsubstream); void snd_pcm_release_substream(struct snd_pcm_substream *substream); +int snd_pcm_attach_substream(struct snd_pcm *pcm, int stream, struct file *file, + struct snd_pcm_substream **rsubstream); +void snd_pcm_detach_substream(struct snd_pcm_substream *substream); void snd_pcm_vma_notify_data(void *client, void *data); int snd_pcm_mmap_data(struct snd_pcm_substream *substream, struct file *file, struct vm_area_struct *area); -- cgit v1.2.3