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rawmidi: Add UMP ioctl support

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Just implement internal callbacks for two new ioctls for UMP
(ump_endpoint_info and ump_block_info).  No public API functions are
added yet here.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2022-11-29 15:24:31 +01:00
parent a034b84705
commit 6627953de0
3 changed files with 49 additions and 1 deletions
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19
src/rawmidi/rawmidi.c
View file

@ -1120,3 +1120,22 @@ ssize_t snd_rawmidi_tread(snd_rawmidi_t *rawmidi, struct timespec *tstamp, void
return -ENOTSUP;
return (rawmidi->ops->tread)(rawmidi, tstamp, buffer, size);
}
#ifndef DOXYGEN
/*
* internal API functions for obtaining UMP info from rawmidi instance
*/
int _snd_rawmidi_ump_endpoint_info(snd_rawmidi_t *rmidi, void *info)
{
if (!rmidi->ops->ump_endpoint_info)
return -ENXIO;
return rmidi->ops->ump_endpoint_info(rmidi, info);
}
int _snd_rawmidi_ump_block_info(snd_rawmidi_t *rmidi, void *info)
{
if (!rmidi->ops->ump_block_info)
return -ENXIO;
return rmidi->ops->ump_block_info(rmidi, info);
}
#endif /* DOXYGEN */

26
src/rawmidi/rawmidi_hw.c
View file

@ -272,6 +272,28 @@ static ssize_t snd_rawmidi_hw_tread(snd_rawmidi_t *rmidi, struct timespec *tstam
return ret + result;
}
static int snd_rawmidi_hw_ump_endpoint_info(snd_rawmidi_t *rmidi, void *buf)
{
snd_rawmidi_hw_t *hw = rmidi->private_data;
if (rmidi->version < SNDRV_PROTOCOL_VERSION(2, 0, 3))
return -ENXIO;
if (ioctl(hw->fd, SNDRV_UMP_IOCTL_ENDPOINT_INFO, buf) < 0)
return -errno;
return 0;
}
static int snd_rawmidi_hw_ump_block_info(snd_rawmidi_t *rmidi, void *buf)
{
snd_rawmidi_hw_t *hw = rmidi->private_data;
if (rmidi->version < SNDRV_PROTOCOL_VERSION(2, 0, 3))
return -ENXIO;
if (ioctl(hw->fd, SNDRV_UMP_IOCTL_BLOCK_INFO, buf) < 0)
return -errno;
return 0;
}
static const snd_rawmidi_ops_t snd_rawmidi_hw_ops = {
.close = snd_rawmidi_hw_close,
.nonblock = snd_rawmidi_hw_nonblock,
@ -282,7 +304,9 @@ static const snd_rawmidi_ops_t snd_rawmidi_hw_ops = {
.drain = snd_rawmidi_hw_drain,
.write = snd_rawmidi_hw_write,
.read = snd_rawmidi_hw_read,
.tread = snd_rawmidi_hw_tread
.tread = snd_rawmidi_hw_tread,
.ump_endpoint_info = snd_rawmidi_hw_ump_endpoint_info,
.ump_block_info = snd_rawmidi_hw_ump_block_info,
};

5
src/rawmidi/rawmidi_local.h
View file

@ -35,6 +35,8 @@ typedef struct {
ssize_t (*write)(snd_rawmidi_t *rawmidi, const void *buffer, size_t size);
ssize_t (*read)(snd_rawmidi_t *rawmidi, void *buffer, size_t size);
ssize_t (*tread)(snd_rawmidi_t *rawmidi, struct timespec *tstamp, void *buffer, size_t size);
int (*ump_endpoint_info)(snd_rawmidi_t *rmidi, void *buf);
int (*ump_block_info)(snd_rawmidi_t *rmidi, void *buf);
} snd_rawmidi_ops_t;
struct _snd_rawmidi {
@ -62,3 +64,6 @@ int snd_rawmidi_virtual_open(snd_rawmidi_t **inputp, snd_rawmidi_t **outputp,
int merge, int mode);
#define snd_rawmidi_conf_generic_id(id) _snd_conf_generic_id(id)
int _snd_rawmidi_ump_endpoint_info(snd_rawmidi_t *rmidi, void *info);
int _snd_rawmidi_ump_block_info(snd_rawmidi_t *rmidi, void *info);