include/sound/ump_convert.h

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 #ifndef __SOUND_UMP_CONVERT_H
   3 #define __SOUND_UMP_CONVERT_H
   4
   5 #include <sound/ump_msg.h>
   6
   7 /* context for converting from legacy control messages to UMP packet */
   8 struct ump_cvt_to_ump_bank {
   9         bool rpn_set;
  10         bool nrpn_set;
  11         bool bank_set;
  12         unsigned char cc_rpn_msb, cc_rpn_lsb;
  13         unsigned char cc_nrpn_msb, cc_nrpn_lsb;
  14         unsigned char cc_data_msb, cc_data_lsb;
  15         unsigned char cc_bank_msb, cc_bank_lsb;
  16         bool cc_data_msb_set, cc_data_lsb_set;
  17 };
  18
  19 /* context for converting from MIDI1 byte stream to UMP packet */
  20 struct ump_cvt_to_ump {
  21         /* MIDI1 intermediate buffer */
  22         unsigned char buf[4];
  23         int len;
  24         int cmd_bytes;
  25
  26         /* UMP output packet */
  27         u32 ump[4];
  28         int ump_bytes;
  29
  30         /* various status */
  31         unsigned int in_sysex;
  32         struct ump_cvt_to_ump_bank bank[16];    /* per channel */
  33 };
  34
  35 int snd_ump_convert_from_ump(const u32 *data, unsigned char *dst,
  36                              unsigned char *group_ret);
  37 void snd_ump_convert_to_ump(struct ump_cvt_to_ump *cvt, unsigned char group,
  38                             unsigned int protocol, unsigned char c);
  39
  40 /* reset the converter context, called at each open to ump */
  41 static inline void snd_ump_convert_reset(struct ump_cvt_to_ump *ctx)
  42 {
  43         memset(ctx, 0, sizeof(*ctx));
  44
  45 }
  46
  47 #endif /* __SOUND_UMP_CONVERT_H */