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Workaround for the OGG decoding issue. 5159a80 was bad for ogg vorbis… (#206)

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* Workaround for the OGG decoding issue. 5159a80 was bad for ogg vorbis decoding. It was never ideal to begin with, but it's better than rendering the game unplayable.

* Concentrated patch, courtesy of Spike so we can still mark sounds as nopurge
This commit is contained in:
Marco Cawthorne 2023-07-26 12:12:55 -07:00 committed by GitHub
parent f317282571
commit 030249f713
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 20 additions and 11 deletions
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31
engine/client/snd_ov.c
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@ -86,11 +86,10 @@ static float QDECL OV_Query(struct sfx_s *sfx, struct sfxcache_s *buf, char *nam
if (!dec) if (!dec)
return -1; return -1;
if (dec->timetotal < 0) // if (dec->pcmtotal == 0)
{ // dec->pcmtotal = p_ov_pcm_total(&dec->vf, -1);
dec->pcmtotal = p_ov_pcm_total(&dec->vf, -1); // if (dec->timetotal < 0)
dec->timetotal = p_ov_time_total(&dec->vf, -1); // dec->timetotal = p_ov_time_total(&dec->vf, -1);
}
if (buf) if (buf)
{ {
@ -199,9 +198,9 @@ static sfxcache_t *QDECL OV_DecodeSome(struct sfx_s *sfx, struct sfxcache_s *buf
if (dec->failed || start+length <= dec->decodedbytestart + dec->decodedbytecount) if (dec->failed || start+length <= dec->decodedbytestart + dec->decodedbytecount)
break; break;
if (dec->decodedbufferbytes < start+length - dec->decodedbytestart + 4096) //expand if needed. 4096 seems to be the recommended size. if (dec->decodedbufferbytes < start+length - dec->decodedbytestart + 4096 && !dec->nopurge) //expand if needed. 4096 seems to be the recommended size.
{ {
// Con_Printf("Expand buffer\n"); // Con_Printf("Expand buffer for %s\n", sfx->name);
dec->decodedbufferbytes = (start+length - dec->decodedbytestart) + max(outspeed, 4096); //over allocate, because we can. dec->decodedbufferbytes = (start+length - dec->decodedbytestart) + max(outspeed, 4096); //over allocate, because we can.
dec->decodedbuffer = BZ_Realloc(dec->decodedbuffer, dec->decodedbufferbytes); dec->decodedbuffer = BZ_Realloc(dec->decodedbuffer, dec->decodedbufferbytes);
} }
@ -489,8 +488,21 @@ static qboolean OV_StartDecode(unsigned char *start, unsigned long length, ovdec
buffer->start = BZ_Malloc(length); buffer->start = BZ_Malloc(length);
memcpy(buffer->start, start, length); memcpy(buffer->start, start, length);
buffer->timetotal = -1; buffer->pcmtotal = p_ov_pcm_total(&buffer->vf, -1);
buffer->timetotal = buffer->pcmtotal / (float)buffer->srcspeed;
if (buffer->timetotal < 5) //short sounds might as well remain cached.
buffer->nopurge = true;
if (buffer->nopurge)
{ //waste more memory upfront to avoid reallocs later.
buffer->decodedbufferbytes = buffer->pcmtotal;
buffer->decodedbufferbytes += 4096; //ogg vorbis apparently lies/fails sometimes.
buffer->decodedbufferbytes *= (double)snd_speed / buffer->srcspeed; //from src rate to dst rate
buffer->decodedbufferbytes *= 2*buffer->srcchannels; //convert from frames to bytes.
buffer->decodedbufferbytes += 4096; //just general paranoia.
buffer->decodedbuffer = BZ_Realloc(buffer->decodedbuffer, buffer->decodedbufferbytes);
}
return true; return true;
} }
@ -533,9 +545,6 @@ qboolean QDECL S_LoadOVSound (sfx_t *s, qbyte *data, size_t datalen, int sndspee
s->decoder.decodedata(s, NULL, 0, 100); s->decoder.decodedata(s, NULL, 0, 100);
if (p_ov_time_total(&buffer->vf, -1) < 5) //short sounds might as well remain cached.
buffer->nopurge = true;
return true; return true;
} }