mirrors/alsa-lib
1
0
Fork 0
mirror of https://github.com/alsa-project/alsa-lib.git synced 2025-10-29 05:40:25 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

ump: Add helpers for handling SysEx data

Browse source 
Yet a few more helpers for handling SysEx data with UMP packets.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2022-11-29 16:42:45 +01:00
parent 040356ecf0
commit e80ee6ae75
2 changed files with 113 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

27
include/ump_msg.h
View file

@ -500,6 +500,14 @@ enum {
SND_UMP_MSG_RESET = 0xff,
};
/** MIDI 2.0 SysEx / Data Status; same values for both 7-bit and 8-bit SysEx */
enum {
SND_UMP_SYSEX_STATUS_SINGLE = 0,
SND_UMP_SYSEX_STATUS_START = 1,
SND_UMP_SYSEX_STATUS_CONTINUE = 2,
SND_UMP_SYSEX_STATUS_END = 3,
};
/**
* \brief get UMP status (4bit) from 32bit UMP message header
*/
@ -564,6 +572,25 @@ static inline uint8_t snd_ump_msg_group(const uint32_t *ump)
return snd_ump_msg_hdr_group(*ump);
}
/**
* \brief get UMP sysex message status
*/
static inline uint8_t snd_ump_sysex_msg_status(const uint32_t *ump)
{
return (*ump >> 20) & 0xf;
}
/**
* \brief get UMP sysex message length
*/
static inline uint8_t snd_ump_sysex_msg_length(const uint32_t *ump)
{
return (*ump >> 16) & 0xf;
}
int snd_ump_msg_sysex_expand(const uint32_t *ump, uint8_t *buf, size_t maxlen,
size_t *filled);
#ifdef __cplusplus
}
#endif