Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
344 | 80.19% | 4 | 36.36% | |
42 | 9.79% | 4 | 36.36% | |
41 | 9.56% | 1 | 9.09% | |
1 | 0.23% | 1 | 9.09% | |
1 | 0.23% | 1 | 9.09% | |
Total | 429 | 11 |
Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Ruslan Bilovol | 344 | 80.19% | 4 | 36.36% |
Pavel Hofman | 42 | 9.79% | 4 | 36.36% |
Julian Scheel | 41 | 9.56% | 1 | 9.09% |
Greg Kroah-Hartman | 1 | 0.23% | 1 | 9.09% |
Nishad Kamdar | 1 | 0.23% | 1 | 9.09% |
Total | 429 | 11 |
/* SPDX-License-Identifier: GPL-2.0+ */ /* * u_audio.h -- interface to USB gadget "ALSA sound card" utilities * * Copyright (C) 2016 * Author: Ruslan Bilovol <ruslan.bilovol@gmail.com> */ #ifndef __U_AUDIO_H #define __U_AUDIO_H #include <linux/usb/composite.h> #include "uac_common.h" /* * Same maximum frequency deviation on the slower side as in * sound/usb/endpoint.c. Value is expressed in per-mil deviation. */ #define FBACK_SLOW_MAX 250 /* * Maximum frequency deviation on the faster side, default value for UAC1/2. * Value is expressed in per-mil deviation. * UAC2 provides the value as a parameter as it impacts the endpoint required * bandwidth. */ #define FBACK_FAST_MAX 5 /* Feature Unit parameters */ struct uac_fu_params { int id; /* Feature Unit ID */ bool mute_present; /* mute control enable */ bool volume_present; /* volume control enable */ s16 volume_min; /* min volume in 1/256 dB */ s16 volume_max; /* max volume in 1/256 dB */ s16 volume_res; /* volume resolution in 1/256 dB */ }; struct uac_params { /* playback */ int p_chmask; /* channel mask */ int p_srates[UAC_MAX_RATES]; /* available rates in Hz (0 terminated list) */ int p_ssize; /* sample size */ struct uac_fu_params p_fu; /* Feature Unit parameters */ /* capture */ int c_chmask; /* channel mask */ int c_srates[UAC_MAX_RATES]; /* available rates in Hz (0 terminated list) */ int c_ssize; /* sample size */ struct uac_fu_params c_fu; /* Feature Unit parameters */ /* rates are dynamic, in uac_rtd_params */ int req_number; /* number of preallocated requests */ int fb_max; /* upper frequency drift feedback limit per-mil */ }; struct g_audio { struct usb_function func; struct usb_gadget *gadget; struct usb_ep *in_ep; struct usb_ep *out_ep; /* feedback IN endpoint corresponding to out_ep */ struct usb_ep *in_ep_fback; /* Max packet size for all in_ep possible speeds */ unsigned int in_ep_maxpsize; /* Max packet size for all out_ep possible speeds */ unsigned int out_ep_maxpsize; /* Notify UAC driver about control change */ int (*notify)(struct g_audio *g_audio, int unit_id, int cs); /* The ALSA Sound Card it represents on the USB-Client side */ struct snd_uac_chip *uac; struct uac_params params; }; static inline struct g_audio *func_to_g_audio(struct usb_function *f) { return container_of(f, struct g_audio, func); } static inline uint num_channels(uint chanmask) { uint num = 0; while (chanmask) { num += (chanmask & 1); chanmask >>= 1; } return num; } /* * g_audio_setup - initialize one virtual ALSA sound card * @g_audio: struct with filled params, in_ep_maxpsize, out_ep_maxpsize * @pcm_name: the id string for a PCM instance of this sound card * @card_name: name of this soundcard * * This sets up the single virtual ALSA sound card that may be exported by a * gadget driver using this framework. * * Context: may sleep * * Returns zero on success, or a negative error on failure. */ int g_audio_setup(struct g_audio *g_audio, const char *pcm_name, const char *card_name); void g_audio_cleanup(struct g_audio *g_audio); int u_audio_start_capture(struct g_audio *g_audio); void u_audio_stop_capture(struct g_audio *g_audio); int u_audio_start_playback(struct g_audio *g_audio); void u_audio_stop_playback(struct g_audio *g_audio); int u_audio_get_capture_srate(struct g_audio *audio_dev, u32 *val); int u_audio_set_capture_srate(struct g_audio *audio_dev, int srate); int u_audio_get_playback_srate(struct g_audio *audio_dev, u32 *val); int u_audio_set_playback_srate(struct g_audio *audio_dev, int srate); int u_audio_get_volume(struct g_audio *g_audio, int playback, s16 *val); int u_audio_set_volume(struct g_audio *g_audio, int playback, s16 val); int u_audio_get_mute(struct g_audio *g_audio, int playback, int *val); int u_audio_set_mute(struct g_audio *g_audio, int playback, int val); void u_audio_suspend(struct g_audio *g_audio); #endif /* __U_AUDIO_H */