mirror of
https://github.com/torvalds/linux.git
synced 2024-11-21 19:46:16 +00:00
e6ce8a28c7
The UMP 1.1 spec says that an RPN/NRPN should be sent when one of the following occurs: * a CC 38 is received * a subsequent CC 6 is received * a CC 98, 99, 100, and 101 is received, indicating the last RPN/NRPN message has ended and a new one has started That said, we should send a partial data even if it's not fully filled. Let's change the UMP conversion helper code to follow that rule. Link: https://patch.msgid.link/20240731130528.12600-2-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
48 lines
1.2 KiB
C
48 lines
1.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
#ifndef __SOUND_UMP_CONVERT_H
|
|
#define __SOUND_UMP_CONVERT_H
|
|
|
|
#include <sound/ump_msg.h>
|
|
|
|
/* context for converting from legacy control messages to UMP packet */
|
|
struct ump_cvt_to_ump_bank {
|
|
bool rpn_set;
|
|
bool nrpn_set;
|
|
bool bank_set;
|
|
unsigned char cc_rpn_msb, cc_rpn_lsb;
|
|
unsigned char cc_nrpn_msb, cc_nrpn_lsb;
|
|
unsigned char cc_data_msb, cc_data_lsb;
|
|
unsigned char cc_bank_msb, cc_bank_lsb;
|
|
bool cc_data_msb_set, cc_data_lsb_set;
|
|
};
|
|
|
|
/* context for converting from MIDI1 byte stream to UMP packet */
|
|
struct ump_cvt_to_ump {
|
|
/* MIDI1 intermediate buffer */
|
|
unsigned char buf[4];
|
|
int len;
|
|
int cmd_bytes;
|
|
|
|
/* UMP output packet */
|
|
u32 ump[4];
|
|
int ump_bytes;
|
|
|
|
/* various status */
|
|
unsigned int in_sysex;
|
|
struct ump_cvt_to_ump_bank bank[16]; /* per channel */
|
|
};
|
|
|
|
int snd_ump_convert_from_ump(const u32 *data, unsigned char *dst,
|
|
unsigned char *group_ret);
|
|
void snd_ump_convert_to_ump(struct ump_cvt_to_ump *cvt, unsigned char group,
|
|
unsigned int protocol, unsigned char c);
|
|
|
|
/* reset the converter context, called at each open to ump */
|
|
static inline void snd_ump_convert_reset(struct ump_cvt_to_ump *ctx)
|
|
{
|
|
memset(ctx, 0, sizeof(*ctx));
|
|
|
|
}
|
|
|
|
#endif /* __SOUND_UMP_CONVERT_H */
|