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do not pad invalid loops

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Tom M 2017-08-04 13:38:07 +02:00 committed by GitHub
parent f2eb657905
commit cbd3efc7c5
1 changed files with 17 additions and 21 deletions
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38
fluidsynth/src/sfloader/fluid_defsfont.c
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@ -3168,9 +3168,9 @@ fixup_sample (SFData * sf)
{
sam = (SFSample *) (p->data);
// The SoundFont 2.4 spec defines the loop start index as the first sample point of the loop
/* The SoundFont 2.4 spec defines the loop start index as the first sample point of the loop */
inv_start = (sam->loopstart < sam->start) || (sam->loopstart >= sam->loopend);
// while loop end is the first point AFTER the last sample of the loop.
/* while loop end is the first point AFTER the last sample of the loop */
inv_end = (sam->loopend > sam->end+1) || (sam->loopstart >= sam->loopend);
/* if sample is not a ROM sample and end is over the sample data chunk
@ -3187,28 +3187,24 @@ fixup_sample (SFData * sf)
return (OK);
}
else if (inv_start || inv_end)
{ /* loop is fowled?? (cluck cluck :) */
FLUID_LOG (FLUID_DBG, _("Sample '%s' has invalid loop,"
" extending loop to full sample"), sam->name);
{
/* loop is fowled?? (cluck cluck :) */
invalid_loops |= TRUE;
/* can pad loop by 8 samples and ensure at least 4 for loop (2*8+4) */
if ((sam->end - sam->start) >= 20)
{
if(inv_start)
sam->loopstart = sam->start + 8;
/* force incorrect loop points into the sample range, ignore padding */
if(inv_start)
{
FLUID_LOG (FLUID_DBG, _("Sample '%s' has invalid loop start '%d',"
" setting to sample start at '%d'+1"), sam->name, sam->loopstart, sam->start);
sam->loopstart = sam->start + 1;
}
if(inv_end)
sam->loopend = sam->end - 8;
}
else
{ /* loop is fowled, sample is tiny (can't pad 8 samples) */
if(inv_start)
sam->loopstart = sam->start + 1;
if(inv_end)
sam->loopend = sam->end - 1;
}
if(inv_end)
{
FLUID_LOG (FLUID_DBG, _("Sample '%s' has invalid loop stop '%d',"
" setting to sample stop at '%d'-1"), sam->name, sam->loopend, sam->end);
sam->loopend = sam->end - 1;
}
}
/* convert sample end, loopstart, loopend to offsets from sam->start */