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Message-ID: <20240805175736.3252615-12-sashal@kernel.org>
Date: Mon, 5 Aug 2024 13:57:09 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
stable@...r.kernel.org
Cc: Takashi Iwai <tiwai@...e.de>,
Sasha Levin <sashal@...nel.org>,
perex@...ex.cz,
tiwai@...e.com,
linux-sound@...r.kernel.org
Subject: [PATCH AUTOSEL 6.6 12/15] ALSA: seq: ump: Transmit RPN/NRPN message at each MSB/LSB data reception
From: Takashi Iwai <tiwai@...e.de>
[ Upstream commit a4ff92ff0bdd731eca9f0b50b1cbb5aba89be4b2 ]
Just like the core UMP conversion helper, we need to deal with the
partially-filled RPN/NRPN data in the sequencer UMP converter as
well.
Link: https://patch.msgid.link/20240731130528.12600-5-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@...e.de>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
sound/core/seq/seq_ump_convert.c | 74 +++++++++++++++++++-------------
1 file changed, 44 insertions(+), 30 deletions(-)
diff --git a/sound/core/seq/seq_ump_convert.c b/sound/core/seq/seq_ump_convert.c
index a63005da2195d..b4d78710966dd 100644
--- a/sound/core/seq/seq_ump_convert.c
+++ b/sound/core/seq/seq_ump_convert.c
@@ -790,27 +790,39 @@ static int paf_ev_to_ump_midi2(const struct snd_seq_event *event,
}
/* set up the MIDI2 RPN/NRPN packet data from the parsed info */
-static void fill_rpn(struct ump_cvt_to_ump_bank *cc,
- union snd_ump_midi2_msg *data,
- unsigned char channel)
+static int fill_rpn(struct ump_cvt_to_ump_bank *cc,
+ union snd_ump_midi2_msg *data,
+ unsigned char channel,
+ bool flush)
{
+ if (!(cc->cc_data_lsb_set || cc->cc_data_msb_set))
+ return 0; // skip
+ /* when not flushing, wait for complete data set */
+ if (!flush && (!cc->cc_data_lsb_set || !cc->cc_data_msb_set))
+ return 0; // skip
+
if (cc->rpn_set) {
data->rpn.status = UMP_MSG_STATUS_RPN;
data->rpn.bank = cc->cc_rpn_msb;
data->rpn.index = cc->cc_rpn_lsb;
- cc->rpn_set = 0;
- cc->cc_rpn_msb = cc->cc_rpn_lsb = 0;
- } else {
+ } else if (cc->nrpn_set) {
data->rpn.status = UMP_MSG_STATUS_NRPN;
data->rpn.bank = cc->cc_nrpn_msb;
data->rpn.index = cc->cc_nrpn_lsb;
- cc->nrpn_set = 0;
- cc->cc_nrpn_msb = cc->cc_nrpn_lsb = 0;
+ } else {
+ return 0; // skip
}
+
data->rpn.data = upscale_14_to_32bit((cc->cc_data_msb << 7) |
cc->cc_data_lsb);
data->rpn.channel = channel;
+
+ cc->rpn_set = 0;
+ cc->nrpn_set = 0;
+ cc->cc_rpn_msb = cc->cc_rpn_lsb = 0;
cc->cc_data_msb = cc->cc_data_lsb = 0;
+ cc->cc_data_msb_set = cc->cc_data_lsb_set = 0;
+ return 1;
}
/* convert CC event to MIDI 2.0 UMP */
@@ -823,28 +835,34 @@ static int cc_ev_to_ump_midi2(const struct snd_seq_event *event,
unsigned char index = event->data.control.param & 0x7f;
unsigned char val = event->data.control.value & 0x7f;
struct ump_cvt_to_ump_bank *cc = &dest_port->midi2_bank[channel];
+ int ret;
/* process special CC's (bank/rpn/nrpn) */
switch (index) {
case UMP_CC_RPN_MSB:
+ ret = fill_rpn(cc, data, channel, true);
cc->rpn_set = 1;
cc->cc_rpn_msb = val;
- return 0; // skip
+ return ret;
case UMP_CC_RPN_LSB:
+ ret = fill_rpn(cc, data, channel, true);
cc->rpn_set = 1;
cc->cc_rpn_lsb = val;
- return 0; // skip
+ return ret;
case UMP_CC_NRPN_MSB:
+ ret = fill_rpn(cc, data, channel, true);
cc->nrpn_set = 1;
cc->cc_nrpn_msb = val;
- return 0; // skip
+ return ret;
case UMP_CC_NRPN_LSB:
+ ret = fill_rpn(cc, data, channel, true);
cc->nrpn_set = 1;
cc->cc_nrpn_lsb = val;
- return 0; // skip
+ return ret;
case UMP_CC_DATA:
+ cc->cc_data_msb_set = 1;
cc->cc_data_msb = val;
- return 0; // skip
+ return fill_rpn(cc, data, channel, false);
case UMP_CC_BANK_SELECT:
cc->bank_set = 1;
cc->cc_bank_msb = val;
@@ -854,11 +872,9 @@ static int cc_ev_to_ump_midi2(const struct snd_seq_event *event,
cc->cc_bank_lsb = val;
return 0; // skip
case UMP_CC_DATA_LSB:
+ cc->cc_data_lsb_set = 1;
cc->cc_data_lsb = val;
- if (!(cc->rpn_set || cc->nrpn_set))
- return 0; // skip
- fill_rpn(cc, data, channel);
- return 1;
+ return fill_rpn(cc, data, channel, false);
}
data->cc.status = status;
@@ -926,6 +942,7 @@ static int ctrl14_ev_to_ump_midi2(const struct snd_seq_event *event,
unsigned char index = event->data.control.param & 0x7f;
struct ump_cvt_to_ump_bank *cc = &dest_port->midi2_bank[channel];
unsigned char msb, lsb;
+ int ret;
msb = (event->data.control.value >> 7) & 0x7f;
lsb = event->data.control.value & 0x7f;
@@ -939,28 +956,25 @@ static int ctrl14_ev_to_ump_midi2(const struct snd_seq_event *event,
cc->cc_bank_lsb = lsb;
return 0; // skip
case UMP_CC_RPN_MSB:
- cc->cc_rpn_msb = msb;
- fallthrough;
case UMP_CC_RPN_LSB:
- cc->rpn_set = 1;
+ ret = fill_rpn(cc, data, channel, true);
+ cc->cc_rpn_msb = msb;
cc->cc_rpn_lsb = lsb;
- return 0; // skip
+ cc->rpn_set = 1;
+ return ret;
case UMP_CC_NRPN_MSB:
- cc->cc_nrpn_msb = msb;
- fallthrough;
case UMP_CC_NRPN_LSB:
+ ret = fill_rpn(cc, data, channel, true);
+ cc->cc_nrpn_msb = msb;
cc->nrpn_set = 1;
cc->cc_nrpn_lsb = lsb;
- return 0; // skip
+ return ret;
case UMP_CC_DATA:
- cc->cc_data_msb = msb;
- fallthrough;
case UMP_CC_DATA_LSB:
+ cc->cc_data_msb_set = cc->cc_data_lsb_set = 1;
+ cc->cc_data_msb = msb;
cc->cc_data_lsb = lsb;
- if (!(cc->rpn_set || cc->nrpn_set))
- return 0; // skip
- fill_rpn(cc, data, channel);
- return 1;
+ return fill_rpn(cc, data, channel, false);
}
data->cc.status = UMP_MSG_STATUS_CC;
--
2.43.0
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