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authorTakashi Iwai <tiwai@suse.de>2006-03-27 16:40:49 +0200
committerJaroslav Kysela <perex@suse.cz>2006-03-31 17:58:59 +0200
commit3bf75f9b90c981f18f27a0d35a44f488ab68c8ea (patch)
tree9284c90f09ce38fc3bb2ebc46624ddf3db09b526 /include/sound/pcm.h
parentbf1bbb5a49eec51c30d341606885507b501b37e8 (diff)
downloadop-kernel-dev-3bf75f9b90c981f18f27a0d35a44f488ab68c8ea.zip
op-kernel-dev-3bf75f9b90c981f18f27a0d35a44f488ab68c8ea.tar.gz
[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 <tiwai@suse.de>
Diffstat (limited to 'include/sound/pcm.h')
-rw-r--r--include/sound/pcm.h12
1 files changed, 7 insertions, 5 deletions
diff --git a/include/sound/pcm.h b/include/sound/pcm.h
index 7cf6a30..66b1f08 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);
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