support for PS2 SNK SVAG

src/Makefile

@@ -302,7 +302,8 @@ META_OBJS=meta/adx_header.o \
 	meta/g1l.o \
 	meta/mca.o \
 	meta/btsnd.o \
-	meta/hca.o
+	meta/hca.o \
+	meta/ps2_svag_snk.o
 
 EXT_LIBS = ../ext_libs/clHCA.o
 

src/meta/Makefile.unix.am

@@ -245,5 +245,6 @@ libmeta_la_SOURCES += ps2_vbk.c
 libmeta_la_SOURCES += mca.c
 libmeta_la_SOURCES += btsnd.c
 libmeta_la_SOURCES += hca.c
+libmeta_la_SOURCES += ps2_svag_snk.c
 
 EXTRA_DIST = meta.h

src/meta/meta.h

@@ -661,4 +661,6 @@ VGMSTREAM * init_vgmstream_mca(STREAMFILE* streamFile);
 
 VGMSTREAM * init_vgmstream_btsnd(STREAMFILE* streamFile);
 
+VGMSTREAM * init_vgmstream_ps2_svag_snk(STREAMFILE* streamFile);
+
 #endif

src/meta/ps2_svag_snk.c

@@ -0,0 +1,78 @@
+#include "meta.h"
+#include "../util.h"
+
+/* PS2 SVAG (SNK)
+ *
+ * Found in SNK's World Heroes Anthology and Fatal Fury Battle Archives 2, maybe others
+ * No relation with Konami's SVAG.
+ */
+
+VGMSTREAM * init_vgmstream_ps2_svag_snk(STREAMFILE* streamFile) {
+    VGMSTREAM * vgmstream = NULL;
+    char filename[PATH_LIMIT];
+
+    /* check extension, case insensitive */
+    streamFile->get_name(streamFile,filename,sizeof(filename));
+    if (strcasecmp("svag",filename_extension(filename))) goto fail;
+
+
+    /* check SNK SVAG Header ("VAGm") */
+    if (read_32bitBE(0x00,streamFile) != 0x5641476D)
+        goto fail;
+
+
+    int sample_rate = read_32bitLE(0x08,streamFile);
+    int channel_count = read_32bitLE(0x0c,streamFile);
+    int blocks = read_32bitLE(0x10,streamFile);
+    /* int unk = read_32bitLE(0x14,streamFile);*/ /* always 0 */
+    int loop_start_block = read_32bitLE(0x18,streamFile);
+    int loop_end_block = read_32bitLE(0x1c,streamFile);
+
+    int loop_flag = loop_end_block > 0; /* loop_start_black can be 0 */
+
+
+    /* build the VGMSTREAM */
+    vgmstream = allocate_vgmstream(channel_count,loop_flag);
+    if (!vgmstream) goto fail;
+
+    /* header data */
+    vgmstream->coding_type = coding_PSX;
+    vgmstream->meta_type = meta_PS2_SVAG_SNK;
+
+    vgmstream->channels = channel_count;
+    vgmstream->sample_rate = sample_rate;
+    vgmstream->num_samples = blocks * 28;
+    if( vgmstream->loop_flag ) {
+        vgmstream->loop_start_sample = loop_start_block * 28;
+        vgmstream->loop_end_sample = loop_end_block * 28;
+    }
+    vgmstream->layout_type = layout_interleave;
+    vgmstream->interleave_block_size = 0x10;
+
+
+    int start_offset = 0x20;
+    /* 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;
+}

src/vgmstream.c

@@ -339,6 +339,7 @@ VGMSTREAM * (*init_vgmstream_fcns[])(STREAMFILE *streamFile) = {
 	init_vgmstream_3ds_idsp,
 	init_vgmstream_g1l,
     init_vgmstream_hca,
+    init_vgmstream_ps2_svag_snk,
 #ifdef VGM_USE_FFMPEG
     init_vgmstream_ffmpeg,
 #endif
@@ -3293,6 +3294,9 @@ void describe_vgmstream(VGMSTREAM * vgmstream, char * desc, int length) {
         case meta_HCA:
             snprintf(temp, TEMPSIZE,"CRI MiddleWare HCA Header");
             break;
+        case meta_PS2_SVAG_SNK:
+            snprintf(temp,TEMPSIZE,"SNK SVAG header");
+            break;
 #ifdef VGM_USE_FFMPEG
         case meta_FFmpeg:
             snprintf(temp, TEMPSIZE,"FFmpeg supported file format");

src/vgmstream.h

@@ -594,7 +594,8 @@ typedef enum {
    meta_G1L,           		// Tecmo Koei G1L
    meta_MCA,                // Capcom MCA "MADP"
    meta_XB3D_ADX,           // Xenoblade Chronicles 3D ADX
-   meta_HCA,
+   meta_HCA,                /* CRI HCA */
+   meta_PS2_SVAG_SNK,       /* SNK PS2 SVAG */
 #ifdef VGM_USE_FFMPEG
    meta_FFmpeg,
 #endif