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midifile: correctly write sysex chunks

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In midifile we can write sysex continuation chunks starting with
0xf7 but we should not write the trailing 0xf0 byte, if any.
This commit is contained in:
Wim Taymans 2026-05-21 16:47:22 +02:00
parent 981613075f
commit 2ee3d3e16b
1 changed files with 5 additions and 2 deletions
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7
src/tools/midifile.c
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@ -557,8 +557,11 @@ int midi_file_write_event(struct midi_file *mf, const struct midi_event *event)
if (ev_size > 0 && if (ev_size > 0 &&
(ev_data[0] == 0xf0 || ev_data[0] == 0xf7)) { (ev_data[0] == 0xf0 || ev_data[0] == 0xf7)) {
CHECK_RES(write_n(mf, ev_data, 1)); CHECK_RES(write_n(mf, ev_data, 1));
ev_size -= 1; ev_size--;
ev_data += 1; ev_data++;
if (ev_data[ev_size-1] == 0xf0)
ev_size--;
CHECK_RES(write_varlen(mf, tr, ev_size)); CHECK_RES(write_varlen(mf, tr, ev_size));