Add GTD support [Knights Contract X360]

src/formats.c

@@ -109,6 +109,7 @@ static const char* extension_list[] = {
     "genh",
     "gms",
     "gsb",
+    "gtd",
 
     "hca",
     "hgc1",
@@ -851,6 +852,7 @@ static const meta_info meta_info_list[] = {
         {meta_SXD,                  "Sony SXD header"},
         {meta_OGL,                  "Shin'en OGL header"},
         {meta_MC3,                  "Paradigm MC3 header"},
+        {meta_GTD,                  "GTD/GHS header"},
 
 #ifdef VGM_USE_VORBIS
         {meta_OGG_VORBIS,           "Ogg Vorbis"},

src/libvgmstream.vcproj

@@ -396,6 +396,10 @@
 					RelativePath=".\meta\gsp_gsb.c"
 					>
 				</File>
+                <File
+                    RelativePath=".\meta\gtd.c"
+                    >
+                </File>
 				<File
 					RelativePath=".\meta\halpst.c"
 					>

src/libvgmstream.vcxproj

@@ -216,6 +216,7 @@
     <ClCompile Include="meta\genh.c" />
     <ClCompile Include="meta\gh3_bar.c" />
     <ClCompile Include="meta\gsp_gsb.c" />
+    <ClCompile Include="meta\gtd.c" />
     <ClCompile Include="meta\halpst.c" />
     <ClCompile Include="meta\hca.c" />
     <ClCompile Include="meta\his.c" />

src/libvgmstream.vcxproj.filters

@@ -220,6 +220,9 @@
     <ClCompile Include="meta\gsp_gsb.c">
       <Filter>meta\Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="meta\gtd.c">
+      <Filter>meta\Source Files</Filter>
+    </ClCompile>
     <ClCompile Include="meta\halpst.c">
       <Filter>meta\Source Files</Filter>
     </ClCompile>

src/meta/gtd.c

@@ -0,0 +1,86 @@
+#include "meta.h"
+#include "../coding/coding.h"
+
+typedef enum { XMA2 } gtd_codec;
+
+/* GTD - found in Knights Contract (X360, PS3), Valhalla Knights 3 (PSV) */
+VGMSTREAM * init_vgmstream_gtd(STREAMFILE *streamFile) {
+    VGMSTREAM * vgmstream = NULL;
+    off_t start_offset, chunk_offset;
+    size_t data_size, chunk_size;
+    int loop_flag, channel_count, sample_rate;
+    int num_samples, loop_start_sample, loop_end_sample;
+    gtd_codec codec;
+
+
+    /* check extension, case insensitive */
+    if ( !check_extensions(streamFile,"gtd"))
+        goto fail;
+
+    if (read_32bitBE(0x00,streamFile) != 0x47485320)   /* "GHS " */
+        goto fail;
+VGM_LOG("1");
+    /* header type, not formally specified */
+    if (read_32bitBE(0x04,streamFile) == 1 && read_16bitBE(0x0C,streamFile) == 0x0166) { /* XMA2 */
+        /* 0x08(4): seek table size */
+        chunk_offset = 0x0c; /* custom header with a "fmt " data chunk inside */
+        chunk_size = 0x34;
+
+        channel_count = read_16bitBE(chunk_offset+0x02,streamFile);
+        sample_rate   = read_32bitBE(chunk_offset+0x04,streamFile);
+        xma2_parse_fmt_chunk_extra(streamFile, chunk_offset, &loop_flag, &num_samples, &loop_start_sample, &loop_end_sample, 1);
+
+        start_offset = read_32bitBE(0x58,streamFile); /* always 0x800 */
+        data_size = read_32bitBE(0x5c,streamFile);
+        /* 0x40(18): null,  0x60(4): header size (0x70), 0x64(4): seek table size again, 0x68(8): null */
+        /* 0x70: seek table; then a "STPR" chunk with the file ID and filename */
+
+        codec = XMA2;
+    }
+    else {
+        /* there are PSV (LE, ATRAC9) and PS3 (MSF inside?) variations, somewhat-but-not-quite similar
+         * (contain the "STPR" chunk but the rest is mostly different) */
+        goto fail;
+    }
+
+
+    /* build the VGMSTREAM */
+    vgmstream = allocate_vgmstream(channel_count,loop_flag);
+    if (!vgmstream) goto fail;
+
+    vgmstream->sample_rate = sample_rate;
+    vgmstream->num_samples = num_samples;
+    vgmstream->loop_start_sample = loop_start_sample;
+    vgmstream->loop_end_sample   = loop_end_sample;
+    vgmstream->meta_type = meta_GTD;
+
+    switch(codec) {
+        case XMA2: {
+#ifdef VGM_USE_FFMPEG
+            uint8_t buf[0x100];
+            size_t bytes;
+
+            bytes = ffmpeg_make_riff_xma_from_fmt_chunk(buf,0x100, chunk_offset,chunk_size, data_size, streamFile, 1);
+            if (bytes <= 0) goto fail;
+
+            vgmstream->codec_data = init_ffmpeg_header_offset(streamFile, buf,bytes, start_offset,data_size);
+            if ( !vgmstream->codec_data ) goto fail;
+            vgmstream->coding_type = coding_FFmpeg;
+            vgmstream->layout_type = layout_none;
+            break;
+        }
+#endif
+        default:
+            goto fail;
+    }
+
+
+    /* open the file for reading */
+    if ( !vgmstream_open_stream(vgmstream, streamFile, start_offset) )
+        goto fail;
+    return vgmstream;
+
+fail:
+    close_vgmstream(vgmstream);
+    return NULL;
+}

src/meta/meta.h

@@ -688,4 +688,7 @@ VGMSTREAM * init_vgmstream_ogl(STREAMFILE *streamFile);
 
 VGMSTREAM * init_vgmstream_mc3(STREAMFILE *streamFile);
 
+VGMSTREAM * init_vgmstream_gtd(STREAMFILE *streamFile);
+
+
 #endif /*_META_H*/

src/vgmstream.c

@@ -354,6 +354,7 @@ VGMSTREAM * (*init_vgmstream_fcns[])(STREAMFILE *streamFile) = {
     init_vgmstream_sxd,
     init_vgmstream_ogl,
     init_vgmstream_mc3,
+    init_vgmstream_gtd,
 
 #ifdef VGM_USE_FFMPEG
     init_vgmstream_mp4_aac_ffmpeg,
@@ -931,6 +932,7 @@ void render_vgmstream(sample * buffer, int32_t sample_count, VGMSTREAM * vgmstre
     }
 }
 
+/* get the size in samples of a single frame (1 or N channels), for interleaved/blocked layouts */
 int get_vgmstream_samples_per_frame(VGMSTREAM * vgmstream) {
     switch (vgmstream->coding_type) {
         case coding_CRI_ADX:
@@ -1081,6 +1083,7 @@ int get_vgmstream_samples_per_shortframe(VGMSTREAM * vgmstream) {
     }
 }
 
+/* get the data size of a single frame (1 or N channels), for interleaved/blocked layouts */
 int get_vgmstream_frame_size(VGMSTREAM * vgmstream) {
     switch (vgmstream->coding_type) {
         case coding_CRI_ADX:

src/vgmstream.h

@@ -609,6 +609,7 @@ typedef enum {
     meta_SXD,               /* Sony SXD (Gravity Rush, Freedom Wars PSV) */
     meta_OGL,               /* Shin'en Wii/WiiU (Jett Rocket (Wii), FAST Racing NEO (WiiU)) */
     meta_MC3,               /* Paradigm games (T3 PS2, MX Rider PS2, MI: Operation Surma PS2) */
+    meta_GTD,               /* Knights Contract (X360/PS3), Valhalla Knights 3 (PSV) */
 
 #ifdef VGM_USE_VORBIS
     meta_OGG_VORBIS,        /* Ogg Vorbis */