From d1f6985f02079342e9a94d3b749d590e2ced8e09 Mon Sep 17 00:00:00 2001
From: Chris Moeller <kode54@gmail.com>
Date: Sun, 19 Oct 2014 14:18:39 -0700
Subject: [PATCH] Updated vgmstream to support G1L files, f.ex. Hyrule Warriors

---
 Frameworks/vgmstream/vgmstream/src/meta/g1l.c | 115 ++++++++++++++++++
 .../vgmstream/vgmstream/src/meta/meta.h       |   2 +
 .../vgmstream/vgmstream/src/vgmstream.c       |   6 +-
 .../vgmstream/vgmstream/src/vgmstream.h       |   1 +
 4 files changed, 123 insertions(+), 1 deletion(-)
 create mode 100644 Frameworks/vgmstream/vgmstream/src/meta/g1l.c

diff --git a/Frameworks/vgmstream/vgmstream/src/meta/g1l.c b/Frameworks/vgmstream/vgmstream/src/meta/g1l.c
new file mode 100644
index 000000000..4220be57d
--- /dev/null
+++ b/Frameworks/vgmstream/vgmstream/src/meta/g1l.c
@@ -0,0 +1,115 @@
+#include "meta.h"
+#include "../util.h"
+
+VGMSTREAM * init_vgmstream_g1l(STREAMFILE *streamFile) {
+	VGMSTREAM * vgmstream = NULL;
+	char filename[PATH_LIMIT];
+
+	coding_t coding_type;
+
+	off_t head_offset;
+
+	int channel_count;
+	int loop_flag;
+	off_t start_offset;
+
+	/* check extension, case insensitive */
+	streamFile->get_name(streamFile, filename, sizeof(filename));
+	if (strcasecmp("g1l", filename_extension(filename)))
+		goto fail;
+
+
+	/* check header */
+	if ((uint32_t)read_32bitBE(0, streamFile) != 0x47314C5F) /* "G1L_" */
+		goto fail;
+	if ((uint32_t)read_32bitBE(0x1c, streamFile) != 0x57696942) /* "WiiB" */
+		goto fail;
+
+	/* check type details */
+//	loop_flag = read_8bit(head_offset + 0x21, streamFile);
+	if (read_32bitBE(0x30, streamFile) > 0)
+		loop_flag = 1;
+	else
+		loop_flag = 0;
+	channel_count = read_8bit(0x3f, streamFile);
+
+
+	coding_type = coding_NGC_DSP;
+	
+
+	if (channel_count < 1) goto fail;
+
+	/* build the VGMSTREAM */
+
+	vgmstream = allocate_vgmstream(channel_count, loop_flag);
+	if (!vgmstream) goto fail;
+
+	/* fill in the vital statistics */
+	vgmstream->num_samples = read_32bitBE(0x2c, streamFile);
+	vgmstream->sample_rate = (uint16_t)read_16bitBE(0x42, streamFile);
+	/* channels and loop flag are set by allocate_vgmstream */
+	
+	vgmstream->loop_start_sample = read_32bitBE(0x30, streamFile);
+	vgmstream->loop_end_sample = vgmstream->num_samples;
+	
+
+	vgmstream->coding_type = coding_type;
+	if (channel_count == 1)
+		vgmstream->layout_type = layout_none;
+	
+	vgmstream->layout_type = layout_interleave_byte;
+	
+	vgmstream->meta_type = meta_G1L;
+
+	vgmstream->interleave_block_size = 0x1;	
+
+	if (vgmstream->coding_type == coding_NGC_DSP) {
+		off_t coef_offset = 0x78;
+		
+		int i, j;
+		int coef_spacing = 0x60;
+
+
+		for (j = 0; j<vgmstream->channels; j++) {
+			for (i = 0; i<16; i++) {
+				vgmstream->ch[j].adpcm_coef[i] = read_16bitBE(coef_offset + j*coef_spacing + i * 2, streamFile);
+			}
+		}
+	}
+
+	if (vgmstream->coding_type == coding_NGC_DSP)
+		start_offset = 0x81c;
+	else // Will add AT3 G1L support later
+		goto fail;
+
+
+
+	/* open the file for reading by each channel */
+	{
+		int i;
+		for (i = 0; i<channel_count; i++) {
+			if (vgmstream->layout_type == layout_interleave_shortblock)
+				vgmstream->ch[i].streamfile = streamFile->open(streamFile, filename,
+				vgmstream->interleave_block_size);
+			else if (vgmstream->layout_type == layout_interleave)
+				vgmstream->ch[i].streamfile = streamFile->open(streamFile, filename,
+				STREAMFILE_DEFAULT_BUFFER_SIZE);
+			else
+				vgmstream->ch[i].streamfile = streamFile->open(streamFile, filename,
+				0x1000);
+
+			if (!vgmstream->ch[i].streamfile) goto fail;
+
+			vgmstream->ch[i].channel_start_offset =
+				vgmstream->ch[i].offset =
+				start_offset + i*vgmstream->interleave_block_size;
+		}
+	}
+
+	return vgmstream;
+
+	/* clean up anything we may have opened */
+fail:
+	if (vgmstream) close_vgmstream(vgmstream);
+	return NULL;
+}
diff --git a/Frameworks/vgmstream/vgmstream/src/meta/meta.h b/Frameworks/vgmstream/vgmstream/src/meta/meta.h
index 7ceb8e21a..cb46f018f 100644
--- a/Frameworks/vgmstream/vgmstream/src/meta/meta.h
+++ b/Frameworks/vgmstream/vgmstream/src/meta/meta.h
@@ -640,4 +640,6 @@ VGMSTREAM * init_vgmstream_bfstm(STREAMFILE* streamFile);
 
 VGMSTREAM * init_vgmstream_bfwav(STREAMFILE* streamFile);
 
+VGMSTREAM * init_vgmstream_g1l(STREAMFILE* streamFile);
+
 #endif
diff --git a/Frameworks/vgmstream/vgmstream/src/vgmstream.c b/Frameworks/vgmstream/vgmstream/src/vgmstream.c
index e046adb5a..534de3156 100644
--- a/Frameworks/vgmstream/vgmstream/src/vgmstream.c
+++ b/Frameworks/vgmstream/vgmstream/src/vgmstream.c
@@ -334,7 +334,8 @@ VGMSTREAM * (*init_vgmstream_fcns[])(STREAMFILE *streamFile) = {
 	init_vgmstream_ps2_vbk,
 	init_vgmstream_otm,
 	init_vgmstream_bcstm,
-  init_vgmstream_3ds_idsp,
+	init_vgmstream_3ds_idsp,
+	init_vgmstream_g1l,
 };
 
 #define INIT_VGMSTREAM_FCNS (sizeof(init_vgmstream_fcns)/sizeof(init_vgmstream_fcns[0]))
@@ -3079,6 +3080,9 @@ void describe_vgmstream(VGMSTREAM * vgmstream, char * desc, int length) {
 		case meta_FSTM:
             snprintf(temp,TEMPSIZE,"Nintendo Wii U FSTM Header");
             break;
+		case meta_G1L:
+            snprintf(temp,TEMPSIZE,"Tecmo Koei G1L Header");
+            break;
     case meta_3DS_IDSP:
             snprintf(temp,TEMPSIZE,"Nintendo 3DS IDSP Header");
             break;
diff --git a/Frameworks/vgmstream/vgmstream/src/vgmstream.h b/Frameworks/vgmstream/vgmstream/src/vgmstream.h
index 381fd314b..39ecaec73 100644
--- a/Frameworks/vgmstream/vgmstream/src/vgmstream.h
+++ b/Frameworks/vgmstream/vgmstream/src/vgmstream.h
@@ -582,6 +582,7 @@ typedef enum {
    meta_CSTM,                // Nintendo 3DS CSTM
    meta_FSTM,                // Nintendo Wii U FSTM
    meta_3DS_IDSP,           // Nintendo 3DS IDSP
+   meta_G1L,           		// Tecmo Koei G1L
 #ifdef VGM_USE_MP4V2
 	meta_MP4,
 #endif