Add iNiS .IMC [Gitaroo Man (PS2)]

src/formats.c

@@ -175,6 +175,7 @@ static const char* extension_list[] = {
     "idx",
     "ikm",
     "ild",
+    "imc",
     "int",
     "isd",
     "isws",
@@ -1125,6 +1126,7 @@ static const meta_info meta_info_list[] = {
         {meta_ZSND,                 "Vicarious Visions ZSND header"},
         {meta_DSP_ADPCMX,           "AQUASTYLE ADPY header"},
         {meta_OGG_OPUS,             "Ogg Opus header"},
+        {meta_IMC,                  "iNiS .IMC header"},
 
 };
 

src/libvgmstream.vcproj

@@ -619,6 +619,10 @@
                 <File
                     RelativePath=".\meta\nub_idsp.c"
                     >
+                </File>
+                <File
+                    RelativePath=".\meta\imc.c"
+                    >
                 </File>
 				<File
 					RelativePath=".\meta\ios_psnd.c"

src/libvgmstream.vcxproj

@@ -146,6 +146,7 @@
     <ClCompile Include="meta\ezw.c" />
     <ClCompile Include="meta\ffmpeg.c" />
     <ClCompile Include="meta\g1l.c" />
+    <ClCompile Include="meta\imc.c" />
     <ClCompile Include="meta\ios_psnd.c" />
     <ClCompile Include="meta\ktss.c" />
     <ClCompile Include="meta\lsf.c" />

src/libvgmstream.vcxproj.filters

@@ -1360,6 +1360,9 @@
     <ClCompile Include="meta\ios_psnd.c">
       <Filter>meta\Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="meta\imc.c">
+      <Filter>meta\Source Files</Filter>
+    </ClCompile>
     <ClCompile Include="meta\pc_adp.c">
       <Filter>meta\Source Files</Filter>
     </ClCompile>

src/meta/imc.c

@@ -0,0 +1,130 @@
+#include "meta.h"
+#include "../coding/coding.h"
+
+/* .IMC - from iNiS Gitaroo Man (PS2)  */
+VGMSTREAM * init_vgmstream_imc(STREAMFILE *streamFile) {
+    VGMSTREAM * vgmstream = NULL;
+    off_t start_offset;
+    int loop_flag, channel_count, sample_rate, interleave, blocks;
+    size_t file_size, data_size;
+
+
+    /* checks */
+    /* .imc: extension from the main container */
+    if (!check_extensions(streamFile, "imc"))
+        goto fail;
+
+    channel_count = read_32bitLE(0x00, streamFile);
+    sample_rate   = read_32bitLE(0x04, streamFile);
+    interleave    = read_32bitLE(0x08, streamFile) * 0x10; /* number of frames in a block */
+    blocks        = read_32bitLE(0x0c, streamFile); /* number of interleave blocks (even in mono) */
+
+    file_size = get_streamfile_size(streamFile);
+    loop_flag  = 0;
+    start_offset = 0x10;
+VGM_LOG("3\n");
+    /* extra checks since the header is so simple */
+    if (channel_count < 1 || channel_count > 8 || sample_rate < 22000 || sample_rate > 48000)
+        goto fail;
+VGM_LOG("4\n");
+    if (interleave*blocks + start_offset != file_size)
+        goto fail;
+VGM_LOG("5\n");
+
+    /* remove padding (important to play gapless subsongs, happens even for mono) */
+    {
+        off_t min_offset = file_size - interleave;
+        off_t offset = file_size - 0x10;
+
+        data_size = file_size - start_offset;
+        while (offset > min_offset) {
+            if (read_32bitLE(offset, streamFile) != 0)
+                break;
+            data_size -= 0x10*channel_count;
+            offset -= 0x10;
+        }
+    }
+
+    /* build the VGMSTREAM */
+    vgmstream = allocate_vgmstream(channel_count, loop_flag);
+    if (!vgmstream) goto fail;
+
+    vgmstream->meta_type = meta_IMC;
+    vgmstream->sample_rate = sample_rate;
+    vgmstream->num_samples = ps_bytes_to_samples(data_size, channel_count);
+    vgmstream->coding_type = coding_PSX;
+    vgmstream->layout_type = layout_interleave;
+    vgmstream->interleave_block_size = interleave;
+
+    if (!vgmstream_open_stream(vgmstream,streamFile,start_offset))
+        goto fail;
+    return vgmstream;
+
+fail:
+    close_vgmstream(vgmstream);
+    return NULL;
+}
+
+/* ****************************************************************************** */
+
+/* .IMC in containers */
+VGMSTREAM * init_vgmstream_imc_container(STREAMFILE *streamFile) {
+    VGMSTREAM *vgmstream = NULL;
+    STREAMFILE *temp_streamFile = NULL;
+    off_t header_offset, subfile_offset, next_offset, name_offset;
+    uint32_t flags1, flags2;
+
+    size_t subfile_size;
+    int total_subsongs, target_subsong = streamFile->stream_index;
+
+    /* checks */
+    if (!check_extensions(streamFile, "imc"))
+        goto fail;
+
+    total_subsongs = read_32bitLE(0x00, streamFile);
+    if (target_subsong == 0) target_subsong = 1;
+    if (target_subsong < 0 || target_subsong > total_subsongs || total_subsongs < 1) goto fail;
+
+
+    header_offset = 0x04 + 0x20*(target_subsong-1);
+
+    name_offset = header_offset + 0x00;
+    //flags1 = (uint32_t)read_32bitLE(header_offset + 0x08, streamFile);
+    /* 0x0c: same for all songs in single .imc but varies between .imc */
+    subfile_offset = read_32bitLE(header_offset + 0x10,streamFile);
+    //flags2 = (uint32_t)read_32bitLE(header_offset + 0x14, streamFile);
+    /* 0x18: same for all songs in single .imc but varies between .imc */
+    /* 0x1c: flags? (0 or 2) */
+//VGM_LOG("1: %x, %x\n", flags1, flags2);
+//    if (!(flags1 == 0x77DE2A70 || flags1 == 0x77DE2A00 || flags1 == 0x00000020 || flags1 == 0x00000000))
+//        goto fail;
+//    if (!(flags2 == 0x0000F095 || flags2 == 0x0012FA3C))
+//        goto fail;
+//VGM_LOG("2\n");
+
+    if (target_subsong == total_subsongs) {
+        next_offset = get_streamfile_size(streamFile);
+    }
+    else {
+        next_offset = read_32bitLE(header_offset + 0x20 + 0x10,streamFile);
+    }
+    subfile_size = next_offset - subfile_offset;
+
+
+    temp_streamFile = setup_subfile_streamfile(streamFile, subfile_offset,subfile_size, NULL);
+    if (!temp_streamFile) goto fail;
+
+    vgmstream = init_vgmstream_imc(temp_streamFile);
+    if (!vgmstream) goto fail;
+
+    close_streamfile(temp_streamFile);
+    vgmstream->num_streams = total_subsongs;
+    read_string(vgmstream->stream_name,0x08+1, name_offset,streamFile);
+
+    return vgmstream;
+
+fail:
+    close_streamfile(temp_streamFile);
+    close_vgmstream(vgmstream);
+    return NULL;
+}

src/meta/meta.h

@@ -820,4 +820,7 @@ VGMSTREAM * init_vgmstream_ogg_opus(STREAMFILE * streamFile);
 
 VGMSTREAM * init_vgmstream_nus3audio(STREAMFILE * streamFile);
 
+VGMSTREAM * init_vgmstream_imc(STREAMFILE * streamFile);
+VGMSTREAM * init_vgmstream_imc_container(STREAMFILE * streamFile);
+
 #endif /*_META_H*/

src/vgmstream.c

@@ -456,6 +456,8 @@ VGMSTREAM * (*init_vgmstream_functions[])(STREAMFILE *streamFile) = {
     init_vgmstream_dsp_adpcmx,
     init_vgmstream_ogg_opus,
     init_vgmstream_nus3audio,
+    init_vgmstream_imc,
+    init_vgmstream_imc_container,
 
     /* lowest priority metas (should go after all metas, and TXTH should go before raw formats) */
     init_vgmstream_txth,            /* proper parsers should supersede TXTH, once added */

src/vgmstream.h

@@ -707,7 +707,8 @@ typedef enum {
     meta_XPS_DAT,
     meta_ZSND,
     meta_DSP_ADPCMX,
-    meta_OGG_OPUS
+    meta_OGG_OPUS,
+    meta_IMC,
 
 } meta_t;