mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-18 09:44:18 +08:00
e2810d76c5
There are a few places leaking memory and doing double-free in
mixer_us16x08.c.
The driver allocates a usb_mixer_elem_info object at each
add_new_ctl() call. This has to be freed via kctl->private_free, but
currently this is done properly only for some controls.
Also, the driver allocates three external objects (comp_store,
eq_store, meter_store), and these are referred in elem->private_data
(it's not kctl->private_data). And these have to be released, but
there are none doing it. Moreover, these extra objects have to be
released only once. Thus the release should be done only by the first
kctl element that refers to it.
For fixing these, we call either snd_usb_mixer_elem_free() (only for
kctl->private_data) or elem_private_free() (for both
kctl->private_data and elem->private_data) via kctl->private_free
appropriately.
Last but not least, snd_us16x08_controls_create() may return in the
middle without releasing the allocated *_store objects due to an
error. For fixing this, we shuffle the allocation code so that it's
called just before its reference.
Fixes: d2bb390a20 ("ALSA: usb-audio: Tascam US-16x08 DSP mixer quirk")
Reported-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
122 lines
3.9 KiB
C
122 lines
3.9 KiB
C
#ifndef __USB_MIXER_US16X08_H
|
|
#define __USB_MIXER_US16X08_H
|
|
|
|
#define SND_US16X08_MAX_CHANNELS 16
|
|
|
|
/* define some bias, cause some alsa-mixers wont work with
|
|
* negative ranges or if mixer-min != 0
|
|
*/
|
|
#define SND_US16X08_NO_BIAS 0
|
|
#define SND_US16X08_FADER_BIAS 127
|
|
#define SND_US16X08_EQ_HIGHFREQ_BIAS 0x20
|
|
#define SND_US16X08_COMP_THRESHOLD_BIAS 0x20
|
|
#define SND_US16X08_COMP_ATTACK_BIAS 2
|
|
#define SND_US16X08_COMP_RELEASE_BIAS 1
|
|
|
|
/* get macro for components of kcontrol private_value */
|
|
#define SND_US16X08_KCBIAS(x) (((x)->private_value >> 24) & 0xff)
|
|
#define SND_US16X08_KCSTEP(x) (((x)->private_value >> 16) & 0xff)
|
|
#define SND_US16X08_KCMIN(x) (((x)->private_value >> 8) & 0xff)
|
|
#define SND_US16X08_KCMAX(x) (((x)->private_value >> 0) & 0xff)
|
|
/* set macro for kcontrol private_value */
|
|
#define SND_US16X08_KCSET(bias, step, min, max) \
|
|
(((bias) << 24) | ((step) << 16) | ((min) << 8) | (max))
|
|
|
|
/* the URB request/type to control Tascam mixers */
|
|
#define SND_US16X08_URB_REQUEST 0x1D
|
|
#define SND_US16X08_URB_REQUESTTYPE 0x40
|
|
|
|
/* the URB params to retrieve meter ranges */
|
|
#define SND_US16X08_URB_METER_REQUEST 0x1e
|
|
#define SND_US16X08_URB_METER_REQUESTTYPE 0xc0
|
|
|
|
#define MUA0(x, y) ((x)[(y) * 10 + 4])
|
|
#define MUA1(x, y) ((x)[(y) * 10 + 5])
|
|
#define MUA2(x, y) ((x)[(y) * 10 + 6])
|
|
#define MUB0(x, y) ((x)[(y) * 10 + 7])
|
|
#define MUB1(x, y) ((x)[(y) * 10 + 8])
|
|
#define MUB2(x, y) ((x)[(y) * 10 + 9])
|
|
#define MUC0(x, y) ((x)[(y) * 10 + 10])
|
|
#define MUC1(x, y) ((x)[(y) * 10 + 11])
|
|
#define MUC2(x, y) ((x)[(y) * 10 + 12])
|
|
#define MUC3(x, y) ((x)[(y) * 10 + 13])
|
|
|
|
/* Common Channel control IDs */
|
|
#define SND_US16X08_ID_BYPASS 0x45
|
|
#define SND_US16X08_ID_BUSS_OUT 0x44
|
|
#define SND_US16X08_ID_PHASE 0x85
|
|
#define SND_US16X08_ID_MUTE 0x83
|
|
#define SND_US16X08_ID_FADER 0x81
|
|
#define SND_US16X08_ID_PAN 0x82
|
|
#define SND_US16X08_ID_METER 0xB1
|
|
|
|
#define SND_US16X08_ID_EQ_BAND_COUNT 4
|
|
#define SND_US16X08_ID_EQ_PARAM_COUNT 4
|
|
|
|
/* EQ level IDs */
|
|
#define SND_US16X08_ID_EQLOWLEVEL 0x01
|
|
#define SND_US16X08_ID_EQLOWMIDLEVEL 0x02
|
|
#define SND_US16X08_ID_EQHIGHMIDLEVEL 0x03
|
|
#define SND_US16X08_ID_EQHIGHLEVEL 0x04
|
|
|
|
/* EQ frequence IDs */
|
|
#define SND_US16X08_ID_EQLOWFREQ 0x11
|
|
#define SND_US16X08_ID_EQLOWMIDFREQ 0x12
|
|
#define SND_US16X08_ID_EQHIGHMIDFREQ 0x13
|
|
#define SND_US16X08_ID_EQHIGHFREQ 0x14
|
|
|
|
/* EQ width IDs */
|
|
#define SND_US16X08_ID_EQLOWMIDWIDTH 0x22
|
|
#define SND_US16X08_ID_EQHIGHMIDWIDTH 0x23
|
|
|
|
#define SND_US16X08_ID_EQENABLE 0x30
|
|
|
|
#define EQ_STORE_BAND_IDX(x) ((x) & 0xf)
|
|
#define EQ_STORE_PARAM_IDX(x) (((x) & 0xf0) >> 4)
|
|
|
|
#define SND_US16X08_ID_ROUTE 0x00
|
|
|
|
/* Compressor Ids */
|
|
#define SND_US16X08_ID_COMP_BASE 0x32
|
|
#define SND_US16X08_ID_COMP_THRESHOLD SND_US16X08_ID_COMP_BASE
|
|
#define SND_US16X08_ID_COMP_RATIO (SND_US16X08_ID_COMP_BASE + 1)
|
|
#define SND_US16X08_ID_COMP_ATTACK (SND_US16X08_ID_COMP_BASE + 2)
|
|
#define SND_US16X08_ID_COMP_RELEASE (SND_US16X08_ID_COMP_BASE + 3)
|
|
#define SND_US16X08_ID_COMP_GAIN (SND_US16X08_ID_COMP_BASE + 4)
|
|
#define SND_US16X08_ID_COMP_SWITCH (SND_US16X08_ID_COMP_BASE + 5)
|
|
#define SND_US16X08_ID_COMP_COUNT 6
|
|
|
|
#define COMP_STORE_IDX(x) ((x) - SND_US16X08_ID_COMP_BASE)
|
|
|
|
struct snd_us16x08_eq_store {
|
|
u8 val[SND_US16X08_ID_EQ_BAND_COUNT][SND_US16X08_ID_EQ_PARAM_COUNT]
|
|
[SND_US16X08_MAX_CHANNELS];
|
|
};
|
|
|
|
struct snd_us16x08_comp_store {
|
|
u8 val[SND_US16X08_ID_COMP_COUNT][SND_US16X08_MAX_CHANNELS];
|
|
};
|
|
|
|
struct snd_us16x08_meter_store {
|
|
int meter_level[SND_US16X08_MAX_CHANNELS];
|
|
int master_level[2]; /* level of meter for master output */
|
|
int comp_index; /* round trip channel selector */
|
|
int comp_active_index; /* channel select from user space mixer */
|
|
int comp_level[16]; /* compressor reduction level */
|
|
struct snd_us16x08_comp_store *comp_store;
|
|
};
|
|
|
|
struct snd_us16x08_control_params {
|
|
struct snd_kcontrol_new *kcontrol_new;
|
|
int control_id;
|
|
int type;
|
|
int num_channels;
|
|
const char *name;
|
|
int default_val;
|
|
};
|
|
|
|
#define snd_us16x08_switch_info snd_ctl_boolean_mono_info
|
|
|
|
int snd_us16x08_controls_create(struct usb_mixer_interface *mixer);
|
|
#endif /* __USB_MIXER_US16X08_H */
|