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ump-utils: fix MIDI 2.0 pitch bend and mask program number

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Fix spa_ump_to_midi() MIDI 2.0 pitch bend (0xE0) to extract both LSB
and MSB from the 32-bit value in word 2, giving full 14-bit resolution.
Previously the LSB came from a reserved field and was always zero.

Mask the program number with 0x7f for consistency with bank byte
masking.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Wim Taymans 2026-05-22 17:13:41 +02:00
parent 26635056a4
commit 4fbe2ef421
2 changed files with 25 additions and 1 deletions
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7
spa/include/spa/control/ump-utils.h
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@ -118,7 +118,7 @@ SPA_API_CONTROL_UMP_UTILS int spa_ump_to_midi(const uint32_t **ump, size_t *ump_
}
else if (*state == 2) {
midi[size++] = status;
midi[size++] = (u[1] >> 24);
midi[size++] = (u[1] >> 24) & 0x7f;
*state = 0;
}
break;
@ -126,6 +126,11 @@ SPA_API_CONTROL_UMP_UTILS int spa_ump_to_midi(const uint32_t **ump, size_t *ump_
midi[size++] = status;
midi[size++] = (u[1] >> 25);
break;
case 0xe0:
midi[size++] = status;
midi[size++] = (u[1] >> 18) & 0x7f;
midi[size++] = (u[1] >> 25);
break;
default:
midi[size++] = status;
midi[size++] = (u[0] >> 8) & 0x7f;