linux-4.4.1/snd_pcm_substream の履歴(No.1)

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linux-4.4.1/snd_pcm_substream へ行く。
- 1 (2016-04-29 (金) 13:51:45)
- 2 (2016-04-29 (金) 14:39:37)

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説明†

パス: linux-4.4.1/include/sound/pcm.h

FIXME: これは何？
- 説明

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参考†

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実装†

struct snd_pcm_substream {
        struct snd_pcm *pcm;
        struct snd_pcm_str *pstr;
        void *private_data;             /* copied from pcm->private_data */

- linux-4.4.1/snd_pcm
- linux-4.4.1/snd_pcm_str

        int number;
        char name[32];                  /* substream name */
        int stream;                     /* stream (direction) */
        struct pm_qos_request latency_pm_qos_req; /* pm_qos request */

- linux-4.4.1/pm_qos_request

        size_t buffer_bytes_max;        /* limit ring buffer size */
        struct snd_dma_buffer dma_buffer;
        size_t dma_max;

- linux-4.4.1/snd_dma_buffer

        /* -- hardware operations -- */
        const struct snd_pcm_ops *ops;

- linux-4.4.1/snd_pcm_ops

        /* -- runtime information -- */
        struct snd_pcm_runtime *runtime;

- linux-4.4.1/snd_pcm_runtime

        /* -- timer section -- */
        struct snd_timer *timer;                /* timer */
        unsigned timer_running: 1;      /* time is running */

- linux-4.4.1/snd_timer

        /* -- next substream -- */
        struct snd_pcm_substream *next;

- linux-4.4.1/snd_pcm_substream

        /* -- linked substreams -- */
        struct list_head link_list;     /* linked list member */
        struct snd_pcm_group self_group;        /* fake group for non linked substream (with substream lock inside) */
        struct snd_pcm_group *group;            /* pointer to current group */

- linux-4.4.1/list_head
- linux-4.4.1/snd_pcm_group

        /* -- assigned files -- */
        void *file;
        int ref_count;
        atomic_t mmap_count;
        unsigned int f_flags;
        void (*pcm_release)(struct snd_pcm_substream *);
        struct pid *pid;

- linux-4.4.1/atomic_t
- linux-4.4.1/pid

#if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE)

- linux-4.4.1/CONFIG_SND_PCM_OSS
- linux-4.4.1/CONFIG_SND_PCM_OSS_MODULE

        /* -- OSS things -- */
        struct snd_pcm_oss_substream oss;

- linux-4.4.1/snd_pcm_oss_substream

#endif
#ifdef CONFIG_SND_VERBOSE_PROCFS

- linux-4.4.1/CONFIG_SND_VERBOSE_PROCFS

        struct snd_info_entry *proc_root;
        struct snd_info_entry *proc_info_entry;
        struct snd_info_entry *proc_hw_params_entry;
        struct snd_info_entry *proc_sw_params_entry;
        struct snd_info_entry *proc_status_entry;
        struct snd_info_entry *proc_prealloc_entry;
        struct snd_info_entry *proc_prealloc_max_entry;

- linux-4.4.1/snd_info_entry

#ifdef CONFIG_SND_PCM_XRUN_DEBUG

- linux-4.4.1/CONFIG_SND_PCM_XRUN_DEBUG

        struct snd_info_entry *proc_xrun_injection_entry;
#endif
#endif /* CONFIG_SND_VERBOSE_PROCFS */
        /* misc flags */
        unsigned int hw_opened: 1;
};

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linux-4.4.1/snd_pcm_substream の履歴(No.1)

参照元†

説明†

参考†

実装†

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