From b7c2c476a88a9daa0a0b357807e3df4099a74869 Mon Sep 17 00:00:00 2001
From: SNMetamorph <snmetamorph.adc@gmail.com>
Date: Sun, 1 Dec 2024 19:22:25 +0400
Subject: [PATCH] engine: soundlib: implemented sound looping feature for Ogg
 Vorbis

---
 engine/common/soundlib/snd_ogg_vorbis.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/engine/common/soundlib/snd_ogg_vorbis.c b/engine/common/soundlib/snd_ogg_vorbis.c
index 0b05e492..39673c87 100644
--- a/engine/common/soundlib/snd_ogg_vorbis.c
+++ b/engine/common/soundlib/snd_ogg_vorbis.c
@@ -67,6 +67,23 @@ static const ov_callbacks ov_callbacks_fs = {
 
 =================================================================
 */
+static void Sound_ScanVorbisComments( OggVorbis_File *vf )
+{
+	const char *value;
+	vorbis_comment *vc = ov_comment( vf, -1 );
+	if( vc )
+	{	
+		if(( value = vorbis_comment_query( vc, "LOOPSTART", 0 ))) {
+			sound.loopstart = Q_atoi( value );
+			SetBits( sound.flags, SOUND_LOOPED );
+		}
+		else if(( value = vorbis_comment_query( vc, "LOOP_START", 0 ))) {
+			sound.loopstart = Q_atoi( value );
+			SetBits( sound.flags, SOUND_LOOPED );
+		}
+	}
+}
+
 qboolean Sound_LoadOggVorbis( const char *name, const byte *buffer, fs_offset_t filesize )
 {
 	long ret;
@@ -98,6 +115,9 @@ qboolean Sound_LoadOggVorbis( const char *name, const byte *buffer, fs_offset_t
 	sound.size = sound.samples * sound.width * sound.channels;
 	sound.wav = (byte *)Mem_Calloc( host.soundpool, sound.size );
 
+	SetBits( sound.flags, SOUND_RESAMPLE );
+	Sound_ScanVorbisComments( &vorbisFile );
+
 	while(( ret = ov_read( &vorbisFile, (char*)sound.wav + written, sound.size - written, 0, sound.width, 1, &section )) != 0 )
 	{
 		if( ret < 0 ) {