From 230eff72e6843c6bc640f357ee885809eb865a27 Mon Sep 17 00:00:00 2001
From: snakemeat <snakemeat@51a99a44-fe44-0410-b1ba-c3e57ba2b86b>
Date: Sat, 14 Apr 2012 16:48:57 +0000
Subject: [PATCH] Add PS3 IVAG meta, oops missed a file.

git-svn-id: https://vgmstream.svn.sourceforge.net/svnroot/vgmstream@978 51a99a44-fe44-0410-b1ba-c3e57ba2b86b
---
 src/meta/ps3_ivag.c | 86 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 86 insertions(+)
 create mode 100644 src/meta/ps3_ivag.c

diff --git a/src/meta/ps3_ivag.c b/src/meta/ps3_ivag.c
new file mode 100644
index 00000000..44e94f70
--- /dev/null
+++ b/src/meta/ps3_ivag.c
@@ -0,0 +1,86 @@
+#include "meta.h"
+#include "../util.h"
+
+/* IVAG
+	- The Idolm@ster: Gravure For You! Vol. 3 (PS3)
+
+	Appears to be two VAGp streams interleaved.
+*/
+VGMSTREAM * init_vgmstream_ps3_ivag(STREAMFILE *streamFile) 
+{
+    VGMSTREAM * vgmstream = NULL;
+    char filename[260];
+    
+	size_t fileLength;
+	off_t readOffset = 0;
+	off_t start_offset;
+
+	int loop_flag = 0;
+	int channel_count;
+
+    /* check extension, case insensitive */
+    streamFile->get_name(streamFile,filename,sizeof(filename));
+    if (strcasecmp("ivag",filename_extension(filename))) goto fail;
+
+    /* check header */
+    if (read_32bitBE(0x00,streamFile) != 0x49564147) // "IVAG"
+        goto fail;
+
+	// channel count
+	channel_count = read_32bitBE(0x08, streamFile);
+
+	// header size
+	start_offset = 0x40 + (0x40 * channel_count);
+    
+	// loop flag
+	if ((read_32bitBE(0x14, streamFile) != 0 || 
+		(read_32bitBE(0x18, streamFile) != 0)))
+	{
+		loop_flag = 1;
+	}
+
+	/* build the VGMSTREAM */
+    vgmstream = allocate_vgmstream(channel_count,loop_flag);
+    if (!vgmstream) goto fail;
+
+	/* fill in the vital statistics */	
+	vgmstream->channels = channel_count;
+    vgmstream->sample_rate = read_32bitBE(0x0C,streamFile);
+    vgmstream->coding_type = coding_PSX;
+	vgmstream->num_samples = read_32bitBE(0x10,streamFile);
+ 
+	if (loop_flag) 
+	{
+		vgmstream->loop_start_sample = read_32bitBE(0x14,streamFile);
+		vgmstream->loop_end_sample = read_32bitBE(0x18,streamFile);
+	}
+
+    vgmstream->layout_type = layout_interleave;
+    vgmstream->interleave_block_size = read_32bitBE(0x1C,streamFile);
+    vgmstream->meta_type = meta_PS3_IVAG;
+
+    /* open the file for reading */
+    {
+        int i;
+        STREAMFILE * file;
+        file = streamFile->open(streamFile,filename,STREAMFILE_DEFAULT_BUFFER_SIZE);
+        if (!file) goto fail;
+        
+		for (i=0;i<channel_count;i++) 
+		{
+            vgmstream->ch[i].streamfile = file;
+
+            vgmstream->ch[i].channel_start_offset=
+                vgmstream->ch[i].offset=start_offset + (vgmstream->interleave_block_size * i);
+
+        }
+		
+    }
+
+    return vgmstream;
+
+    /* clean up anything we may have opened */
+fail:
+    if (vgmstream) close_vgmstream(vgmstream);
+    return NULL;
+}