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Fix some pad end issues with segmented layout

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bnnm 2020-11-22 18:57:15 +01:00
parent 4a9c56c976
commit 2e24208622
1 changed files with 16 additions and 14 deletions
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30
src/render.c
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@ -399,30 +399,32 @@ static int render_fade(VGMSTREAM* vgmstream, sample_t* buf, int samples_left) {
/* next samples after fade end would be pad end/silence, so we can just memset */
memset(buf + (start + to_do) * channels, 0, (samples_left - to_do - start) * sizeof(sample_t) * channels);
return samples_left; //start + to_do;
return start + to_do;
}
}
static int render_pad_end(VGMSTREAM* vgmstream, sample_t* buf, int samples_left) {
play_state_t* ps = &vgmstream->pstate;
int channels = vgmstream->pstate.output_channels;
int start = 0;
int32_t to_do = samples_left;
int skip = 0;
int32_t to_do;
/* pad end works like fades, where part of buf done it may be valid data and part padding (silent),
* so needs positions (since anything beyond pad end start is silence no need to check end) */
/* pad end works like fades, where part of buf samples and part padding (silent),
* calc exact totals (beyond pad end normally is silence, except with segmented layout) */
if (ps->play_position < ps->pad_end_start) {
start = samples_left - (ps->play_position + samples_left - ps->pad_end_start);
skip = ps->pad_end_start - ps->play_position;
to_do = ps->pad_end_duration;
}
else {
start = 0;
skip = 0;
to_do = (ps->pad_end_start + ps->pad_end_duration) - ps->play_position;
}
if (to_do > samples_left - start)
to_do = samples_left - start;
if (to_do > samples_left - skip)
to_do = samples_left - skip;
memset(buf + (start * channels), 0, to_do * sizeof(sample_t) * channels);
return samples_left; //start + to_do;
memset(buf + (skip * channels), 0, to_do * sizeof(sample_t) * channels);
return skip + to_do;
}
@ -457,9 +459,9 @@ int render_vgmstream(sample_t* buf, int32_t sample_count, VGMSTREAM* vgmstream)
tmpbuf += done * vgmstream->pstate.output_channels; /* as if mixed */
}
/* end padding (done before to avoid decoding if possible, samples_to_do becomes 0) */
if (!vgmstream->config.play_forever /* && ps->pad_end_left */
&& ps->play_position + samples_to_do >= ps->pad_end_start
/* end padding (before to avoid decoding if possible, but must be inside pad region) */
if (!vgmstream->config.play_forever
&& ps->play_position /*+ samples_to_do*/ >= ps->pad_end_start
&& samples_to_do) {
done = render_pad_end(vgmstream, tmpbuf, samples_to_do);
samples_done += done;