add GMS Support (PS1 & PS2)

git-svn-id: https://vgmstream.svn.sourceforge.net/svnroot/vgmstream@174 51a99a44-fe44-0410-b1ba-c3e57ba2b86b

src/libvgmstream.vcproj

@@ -282,6 +282,10 @@
 					RelativePath=".\meta\psx_cdxa.c"
 					>
 				</File>
+				<File
+					RelativePath=".\meta\psx_gms.c"
+					>
+				</File>
 				<File
 					RelativePath=".\meta\raw.c"
 					>

src/meta/meta.h

@@ -59,4 +59,6 @@ VGMSTREAM * init_vgmstream_raw(const char * const filename);
 
 VGMSTREAM * init_vgmstream_ps2_vag(const char * const filename);
 
+VGMSTREAM * init_vgmstream_psx_gms(const char * const filename);
+
 #endif

src/meta/psx_gms.c

@@ -0,0 +1,82 @@
+#include "meta.h"
+#include "../util.h"
+
+/* GMS
+
+   PSX GMS format has no recognition ID.
+   This format was used essentially in Grandia Games but 
+   can be easily used by other header format as the format of the header is very simple
+
+   known extensions : GMS 
+
+   2008-05-19 - Fastelbja : First version ...
+*/
+
+VGMSTREAM * init_vgmstream_psx_gms(const char * const filename) {
+    VGMSTREAM * vgmstream = NULL;
+    STREAMFILE * infile = NULL;
+
+    int loop_flag=0;
+	int channel_count;
+    off_t start_offset;
+    int i;
+
+    /* check extension, case insensitive */
+    if (strcasecmp("gms",filename_extension(filename))) goto fail;
+
+    /* try to open the file for header reading */
+    infile = open_streamfile(filename);
+    if (!infile) goto fail;
+
+	/* check loop */
+	loop_flag = (read_32bitLE(0x20,infile)==0);
+    
+	/* Always stereo files */
+	channel_count=read_32bitLE(0x00,infile);
+    
+	/* 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_32bitLE(0x04,infile);
+
+	vgmstream->coding_type = coding_PSX;
+    vgmstream->num_samples = read_32bitLE(0x1C,infile);
+
+	/* Get loop point values */
+	if(vgmstream->loop_flag) {
+		vgmstream->loop_start_sample = read_32bitLE(0x14,infile);
+		vgmstream->loop_end_sample = read_32bitLE(0x1C,infile);
+	}
+
+    vgmstream->layout_type = layout_interleave;
+	vgmstream->interleave_block_size = 0x800;
+    vgmstream->meta_type = meta_PSX_GMS;
+
+	start_offset = 0x800;
+
+    close_streamfile(infile); infile=NULL;
+
+    /* open the file for reading by each channel */
+    {
+        for (i=0;i<channel_count;i++) {
+            vgmstream->ch[i].streamfile = open_streamfile_buffer(filename,vgmstream->interleave_block_size);
+
+            if (!vgmstream->ch[i].streamfile) goto fail;
+
+            vgmstream->ch[i].channel_start_offset=
+                vgmstream->ch[i].offset=
+                (off_t)(start_offset+vgmstream->interleave_block_size*i);
+        }
+    }
+
+    return vgmstream;
+
+    /* clean up anything we may have opened */
+fail:
+    if (infile) close_streamfile(infile);
+    if (vgmstream) close_vgmstream(vgmstream);
+    return NULL;
+}

src/vgmstream.c

@@ -15,7 +15,7 @@
  * List of functions that will recognize files. These should correspond pretty
  * directly to the metadata types
  */
-#define INIT_VGMSTREAM_FCNS 28
+#define INIT_VGMSTREAM_FCNS 29
 VGMSTREAM * (*init_vgmstream_fcns[INIT_VGMSTREAM_FCNS])(const char * const) = {
     init_vgmstream_adx,             /* 0 */
     init_vgmstream_brstm,           /* 1 */
@@ -45,6 +45,7 @@ VGMSTREAM * (*init_vgmstream_fcns[INIT_VGMSTREAM_FCNS])(const char * const) = {
     init_vgmstream_ngc_dsp_std_int, /* 25 */
 	init_vgmstream_raw,				/* 26 */
 	init_vgmstream_ps2_vag,			/* 27 */
+	init_vgmstream_psx_gms			/* 28 */
 };
 
 
@@ -678,6 +679,9 @@ void describe_vgmstream(VGMSTREAM * vgmstream, char * desc, int length) {
             break;
 		case meta_PS2_pGAV:
             snprintf(temp,TEMPSIZE,"Sony VAG Stereo Little Endian header (pGAV)");
+            break;
+		case meta_PSX_GMS:
+            snprintf(temp,TEMPSIZE,"assumed Grandia GMS file by .gms extension");
             break;
         default:
             snprintf(temp,TEMPSIZE,"THEY SHOULD HAVE SENT A POET");

src/vgmstream.h

@@ -91,6 +91,7 @@ typedef enum {
 	meta_PS2_VAGi,			/* VAGi Interleaved File */
 	meta_PS2_VAGp,			/* VAGp Mono File */
 	meta_PS2_pGAV,			/* VAGp with Little Endian Header */
+	meta_PSX_GMS,			/* GMS File (used in PS1 & PS2) */
 
 	meta_PSX_XA,			/* CD-XA with RIFF header */
 

winamp/in_vgmstream.c

@@ -74,7 +74,7 @@ int fade_samples = 0;
 
 #define EXTENSION_LIST_SIZE 1024
 char working_extension_list[EXTENSION_LIST_SIZE] = {0};
-#define EXTENSION_COUNT 28
+#define EXTENSION_COUNT 29
 char * extension_list[EXTENSION_COUNT] = {
     "adx\0ADX Audio File (*.ADX)\0",
     "afc\0AFC Audio File (*.AFC)\0",
@@ -104,6 +104,7 @@ char * extension_list[EXTENSION_COUNT] = {
     "mss\0MSS Audio File (*.MSS)\0",
 	"raw\0RAW Audio File (*.RAW)\0",
 	"vag\0VAG Audio File (*.VAG)\0",
+	"gms\0GMS Audio File (*.GMS)\0",
 };
 
 void about(HWND hwndParent) {