169 lines
6.4 KiB
C
169 lines
6.4 KiB
C
|
#ifndef __USBAUDIO_CARD_H
|
||
|
|
#define __USBAUDIO_CARD_H
|
||
|
|
|
||
|
|
#define MAX_NR_RATES 1024
|
||
|
|
#define MAX_PACKS 20
|
||
|
|
#define MAX_PACKS_HS (MAX_PACKS * 8) /* in high speed mode */
|
||
|
|
#define MAX_URBS 8
|
||
|
|
#define SYNC_URBS 4 /* always four urbs for sync */
|
||
|
|
#define MAX_QUEUE 24 /* try not to exceed this queue length, in ms */
|
||
|
|
|
||
|
|
struct audioformat {
|
||
|
|
struct list_head list;
|
||
|
|
u64 formats; /* ALSA format bits */
|
||
|
|
unsigned int channels; /* # channels */
|
||
|
|
unsigned int fmt_type; /* USB audio format type (1-3) */
|
||
|
|
unsigned int frame_size; /* samples per frame for non-audio */
|
||
|
|
int iface; /* interface number */
|
||
|
|
unsigned char altsetting; /* corresponding alternate setting */
|
||
|
|
unsigned char altset_idx; /* array index of altenate setting */
|
||
|
|
unsigned char attributes; /* corresponding attributes of cs endpoint */
|
||
|
|
unsigned char endpoint; /* endpoint */
|
||
|
|
unsigned char ep_attr; /* endpoint attributes */
|
||
|
|
unsigned char datainterval; /* log_2 of data packet interval */
|
||
|
|
unsigned char protocol; /* UAC_VERSION_1/2 */
|
||
|
|
unsigned int maxpacksize; /* max. packet size */
|
||
|
|
unsigned int rates; /* rate bitmasks */
|
||
|
|
unsigned int rate_min, rate_max; /* min/max rates */
|
||
|
|
unsigned int nr_rates; /* number of rate table entries */
|
||
|
|
unsigned int *rate_table; /* rate table */
|
||
|
|
unsigned char clock; /* associated clock */
|
||
|
|
struct snd_pcm_chmap_elem *chmap; /* (optional) channel map */
|
||
|
|
bool dsd_dop; /* add DOP headers in case of DSD samples */
|
||
|
|
bool dsd_bitrev; /* reverse the bits of each DSD sample */
|
||
|
|
};
|
||
|
|
|
||
|
|
struct snd_usb_substream;
|
||
|
|
struct snd_usb_endpoint;
|
||
|
|
|
||
|
|
struct snd_urb_ctx {
|
||
|
|
struct urb *urb;
|
||
|
|
unsigned int buffer_size; /* size of data buffer, if data URB */
|
||
|
|
struct snd_usb_substream *subs;
|
||
|
|
struct snd_usb_endpoint *ep;
|
||
|
|
int index; /* index for urb array */
|
||
|
|
int packets; /* number of packets per urb */
|
||
|
|
int packet_size[MAX_PACKS_HS]; /* size of packets for next submission */
|
||
|
|
struct list_head ready_list;
|
||
|
|
};
|
||
|
|
|
||
|
|
struct snd_usb_endpoint {
|
||
|
|
struct snd_usb_audio *chip;
|
||
|
|
|
||
|
|
int use_count;
|
||
|
|
int ep_num; /* the referenced endpoint number */
|
||
|
|
int type; /* SND_USB_ENDPOINT_TYPE_* */
|
||
|
|
unsigned long flags;
|
||
|
|
|
||
|
|
void (*prepare_data_urb) (struct snd_usb_substream *subs,
|
||
|
|
struct urb *urb);
|
||
|
|
void (*retire_data_urb) (struct snd_usb_substream *subs,
|
||
|
|
struct urb *urb);
|
||
|
|
|
||
|
|
struct snd_usb_substream *data_subs;
|
||
|
|
struct snd_usb_endpoint *sync_master;
|
||
|
|
struct snd_usb_endpoint *sync_slave;
|
||
|
|
|
||
|
|
struct snd_urb_ctx urb[MAX_URBS];
|
||
|
|
|
||
|
|
struct snd_usb_packet_info {
|
||
|
|
uint32_t packet_size[MAX_PACKS_HS];
|
||
|
|
int packets;
|
||
|
|
} next_packet[MAX_URBS];
|
||
|
|
int next_packet_read_pos, next_packet_write_pos;
|
||
|
|
struct list_head ready_playback_urbs;
|
||
|
|
|
||
|
|
unsigned int nurbs; /* # urbs */
|
||
|
|
unsigned long active_mask; /* bitmask of active urbs */
|
||
|
|
unsigned long unlink_mask; /* bitmask of unlinked urbs */
|
||
|
|
char *syncbuf; /* sync buffer for all sync URBs */
|
||
|
|
dma_addr_t sync_dma; /* DMA address of syncbuf */
|
||
|
|
|
||
|
|
unsigned int pipe; /* the data i/o pipe */
|
||
|
|
unsigned int freqn; /* nominal sampling rate in fs/fps in Q16.16 format */
|
||
|
|
unsigned int freqm; /* momentary sampling rate in fs/fps in Q16.16 format */
|
||
|
|
int freqshift; /* how much to shift the feedback value to get Q16.16 */
|
||
|
|
unsigned int freqmax; /* maximum sampling rate, used for buffer management */
|
||
|
|
unsigned int phase; /* phase accumulator */
|
||
|
|
unsigned int maxpacksize; /* max packet size in bytes */
|
||
|
|
unsigned int maxframesize; /* max packet size in frames */
|
||
|
|
unsigned int curpacksize; /* current packet size in bytes (for capture) */
|
||
|
|
unsigned int curframesize; /* current packet size in frames (for capture) */
|
||
|
|
unsigned int syncmaxsize; /* sync endpoint packet size */
|
||
|
|
unsigned int fill_max:1; /* fill max packet size always */
|
||
|
|
unsigned int tenor_fb_quirk:1; /* corrupted feedback data */
|
||
|
|
unsigned int datainterval; /* log_2 of data packet interval */
|
||
|
|
unsigned int syncinterval; /* P for adaptive mode, 0 otherwise */
|
||
|
|
unsigned char silence_value;
|
||
|
|
unsigned int stride;
|
||
|
|
int iface, altsetting;
|
||
|
|
int skip_packets; /* quirks for devices to ignore the first n packets
|
||
|
|
in a stream */
|
||
|
|
|
||
|
|
spinlock_t lock;
|
||
|
|
struct list_head list;
|
||
|
|
};
|
||
|
|
|
||
|
|
struct snd_usb_substream {
|
||
|
|
struct snd_usb_stream *stream;
|
||
|
|
struct usb_device *dev;
|
||
|
|
struct snd_pcm_substream *pcm_substream;
|
||
|
|
int direction; /* playback or capture */
|
||
|
|
int interface; /* current interface */
|
||
|
|
int endpoint; /* assigned endpoint */
|
||
|
|
struct audioformat *cur_audiofmt; /* current audioformat pointer (for hw_params callback) */
|
||
|
|
snd_pcm_format_t pcm_format; /* current audio format (for hw_params callback) */
|
||
|
|
unsigned int channels; /* current number of channels (for hw_params callback) */
|
||
|
|
unsigned int channels_max; /* max channels in the all audiofmts */
|
||
|
|
unsigned int cur_rate; /* current rate (for hw_params callback) */
|
||
|
|
unsigned int period_bytes; /* current period bytes (for hw_params callback) */
|
||
|
|
unsigned int altset_idx; /* USB data format: index of alternate setting */
|
||
|
|
unsigned int txfr_quirk:1; /* allow sub-frame alignment */
|
||
|
|
unsigned int tx_length_quirk:1; /* add length specifier to transfers */
|
||
|
|
unsigned int fmt_type; /* USB audio format type (1-3) */
|
||
|
|
unsigned int pkt_offset_adj; /* Bytes to drop from beginning of packets (for non-compliant devices) */
|
||
|
|
unsigned int stream_offset_adj; /* Bytes to drop from beginning of stream (for non-compliant devices) */
|
||
|
|
|
||
|
|
unsigned int running: 1; /* running status */
|
||
|
|
|
||
|
|
unsigned int hwptr_done; /* processed byte position in the buffer */
|
||
|
|
unsigned int transfer_done; /* processed frames since last period update */
|
||
|
|
|
||
|
|
/* data and sync endpoints for this stream */
|
||
|
|
unsigned int ep_num; /* the endpoint number */
|
||
|
|
struct snd_usb_endpoint *data_endpoint;
|
||
|
|
struct snd_usb_endpoint *sync_endpoint;
|
||
|
|
unsigned long flags;
|
||
|
|
bool need_setup_ep; /* (re)configure EP at prepare? */
|
||
|
|
unsigned int speed; /* USB_SPEED_XXX */
|
||
|
|
|
||
|
|
u64 formats; /* format bitmasks (all or'ed) */
|
||
|
|
unsigned int num_formats; /* number of supported audio formats (list) */
|
||
|
|
struct list_head fmt_list; /* format list */
|
||
|
|
struct snd_pcm_hw_constraint_list rate_list; /* limited rates */
|
||
|
|
spinlock_t lock;
|
||
|
|
|
||
|
|
int last_frame_number; /* stored frame number */
|
||
|
|
int last_delay; /* stored delay */
|
||
|
|
|
||
|
|
struct {
|
||
|
|
int marker;
|
||
|
|
int channel;
|
||
|
|
int byte_idx;
|
||
|
|
} dsd_dop;
|
||
|
|
|
||
|
|
bool trigger_tstamp_pending_update; /* trigger timestamp being updated from initial estimate */
|
||
|
|
unsigned long last_prepare;
|
||
|
|
};
|
||
|
|
|
||
|
|
struct snd_usb_stream {
|
||
|
|
struct snd_usb_audio *chip;
|
||
|
|
struct snd_pcm *pcm;
|
||
|
|
int pcm_index;
|
||
|
|
unsigned int fmt_type; /* USB audio format type (1-3) */
|
||
|
|
struct snd_usb_substream substream[2];
|
||
|
|
struct list_head list;
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif /* __USBAUDIO_CARD_H */
|