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| author | Takashi Iwai <tiwai@suse.de> | 2024-07-31 16:05:22 +0300 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2024-07-31 16:08:18 +0300 |
| commit | e6ce8a28c768dbbad3f818db286cd0f4c7a921a8 (patch) | |
| tree | 5321a62c931f77e77502d932f91e451bc3241a3c /include/sound/ump_convert.h | |
| parent | 3dab73ab925a51ab05543b491bf17463a48ca323 (diff) | |
| download | linux-e6ce8a28c768dbbad3f818db286cd0f4c7a921a8.tar.xz | |
ALSA: ump: Transmit RPN/NRPN message at each MSB/LSB data reception
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>
Diffstat (limited to 'include/sound/ump_convert.h')
| -rw-r--r-- | include/sound/ump_convert.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/sound/ump_convert.h b/include/sound/ump_convert.h index 28c364c63245..d099ae27f849 100644 --- a/include/sound/ump_convert.h +++ b/include/sound/ump_convert.h @@ -13,6 +13,7 @@ struct ump_cvt_to_ump_bank { 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 */ |