#ifndef __USBAUDIO_CARD_H #define __USBAUDIO_CARD_H #define MAX_NR_RATES 1024 #define MAX_PACKS 6 /* per URB */ #define MAX_PACKS_HS (MAX_PACKS * 8) /* in high speed mode */ #define MAX_URBS 12 #define SYNC_URBS 4 /* always four urbs for sync */ #define MAX_QUEUE 18 /* 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 max_urb_frames; /* max URB 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 udh01_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 period_frames; /* current frames per period */ unsigned int buffer_periods; /* current periods per buffer */ 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 running: 1; /* running status */ unsigned int hwptr_done; /* processed byte position in the buffer */ unsigned int transfer_done; /* processed frames since last period update */ unsigned int frame_limit; /* limits number of packets in URB */ /* 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 */ }; 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 */Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp | |
| daniel mack | daniel mack | 570 | 84.57% | 7 | 30.43% |
| takashi iwai | takashi iwai | 25 | 3.71% | 4 | 17.39% |
| alan stern | alan stern | 24 | 3.56% | 1 | 4.35% |
| clemens ladisch | clemens ladisch | 17 | 2.52% | 4 | 17.39% |
| pierre-louis bossart | pierre-louis bossart | 12 | 1.78% | 2 | 8.70% |
| dylan reid | dylan reid | 9 | 1.34% | 1 | 4.35% |
| ricard wanderlof | ricard wanderlof | 7 | 1.04% | 1 | 4.35% |
| calvin owens | calvin owens | 5 | 0.74% | 1 | 4.35% |
| xi wang | xi wang | 4 | 0.59% | 1 | 4.35% |
| eldad zack | eldad zack | 1 | 0.15% | 1 | 4.35% |
| Total | 674 | 100.00% | 23 | 100.00% |