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Currently, channel IDs exceeding 31 (0x1f) cannot be used. The channel ID is derived from the cmask. Extending cmask to a 64-bit type would only allow it to go up to 63 (0x3f). Some devices have channel IDs exceeding that as well. To address that, add an offset to the mixer element which is then accounted for in the UAC set/get functions. Signed-off-by: Eldad Zack <eldad@fogrefinery.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
76 lines
2.0 KiB
C
76 lines
2.0 KiB
C
#ifndef __USBMIXER_H
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#define __USBMIXER_H
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struct usb_mixer_interface {
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struct snd_usb_audio *chip;
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struct usb_host_interface *hostif;
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struct list_head list;
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unsigned int ignore_ctl_error;
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struct urb *urb;
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/* array[MAX_ID_ELEMS], indexed by unit id */
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struct usb_mixer_elem_info **id_elems;
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/* the usb audio specification version this interface complies to */
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int protocol;
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/* Sound Blaster remote control stuff */
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const struct rc_config *rc_cfg;
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u32 rc_code;
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wait_queue_head_t rc_waitq;
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struct urb *rc_urb;
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struct usb_ctrlrequest *rc_setup_packet;
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u8 rc_buffer[6];
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u8 audigy2nx_leds[3];
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u8 xonar_u1_status;
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};
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#define MAX_CHANNELS 16 /* max logical channels */
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enum {
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USB_MIXER_BOOLEAN,
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USB_MIXER_INV_BOOLEAN,
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USB_MIXER_S8,
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USB_MIXER_U8,
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USB_MIXER_S16,
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USB_MIXER_U16,
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};
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struct usb_mixer_elem_info {
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struct usb_mixer_interface *mixer;
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struct usb_mixer_elem_info *next_id_elem; /* list of controls with same id */
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struct snd_ctl_elem_id *elem_id;
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unsigned int id;
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unsigned int control; /* CS or ICN (high byte) */
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unsigned int cmask; /* channel mask bitmap: 0 = master */
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unsigned int idx_off; /* Control index offset */
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unsigned int ch_readonly;
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unsigned int master_readonly;
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int channels;
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int val_type;
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int min, max, res;
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int dBmin, dBmax;
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int cached;
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int cache_val[MAX_CHANNELS];
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u8 initialized;
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};
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int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif,
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int ignore_error);
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void snd_usb_mixer_disconnect(struct list_head *p);
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void snd_usb_mixer_notify_id(struct usb_mixer_interface *mixer, int unitid);
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int snd_usb_mixer_set_ctl_value(struct usb_mixer_elem_info *cval,
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int request, int validx, int value_set);
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void snd_usb_mixer_inactivate(struct usb_mixer_interface *mixer);
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int snd_usb_mixer_activate(struct usb_mixer_interface *mixer);
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int snd_usb_mixer_add_control(struct usb_mixer_interface *mixer,
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struct snd_kcontrol *kctl);
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int snd_usb_mixer_vol_tlv(struct snd_kcontrol *kcontrol, int op_flag,
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unsigned int size, unsigned int __user *_tlv);
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#endif /* __USBMIXER_H */
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