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rawmidi: add support for SNDRV_RAWMIDI_IOCTL_USER_PVERSION

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Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Jaroslav Kysela 2021-10-04 17:25:06 +02:00
parent c578e80d6f
commit c932c1e7ab
2 changed files with 6 additions and 0 deletions
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1
include/sound/uapi/asound.h
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@ -773,6 +773,7 @@ struct snd_rawmidi_status {
#define SNDRV_RAWMIDI_IOCTL_PVERSION _IOR('W', 0x00, int)
#define SNDRV_RAWMIDI_IOCTL_INFO _IOR('W', 0x01, struct snd_rawmidi_info)
#define SNDRV_RAWMIDI_IOCTL_USER_PVERSION _IOW('W', 0x02, int)
#define SNDRV_RAWMIDI_IOCTL_PARAMS _IOWR('W', 0x10, struct snd_rawmidi_params)
#define SNDRV_RAWMIDI_IOCTL_STATUS _IOWR('W', 0x20, struct snd_rawmidi_status)
#define SNDRV_RAWMIDI_IOCTL_DROP _IOW('W', 0x30, int)

5
src/rawmidi/rawmidi_hw.c
View file

@ -354,6 +354,11 @@ int snd_rawmidi_hw_open(snd_rawmidi_t **inputp, snd_rawmidi_t **outputp,
snd_ctl_close(ctl);
return -SND_ERROR_INCOMPATIBLE_VERSION;
}
if (SNDRV_PROTOCOL_VERSION(2, 0, 2) <= ver) {
/* inform the protocol version we're supporting */
unsigned int user_ver = SNDRV_RAWMIDI_VERSION;
ioctl(fd, SNDRV_RAWMIDI_IOCTL_USER_PVERSION, &user_ver);
}
if (subdevice >= 0) {
memset(&info, 0, sizeof(info));
info.stream = outputp ? SNDRV_RAWMIDI_STREAM_OUTPUT : SNDRV_RAWMIDI_STREAM_INPUT;