Add .at9 opus [Penny-Punching Princess (Switch)]

src/formats.c

@@ -1002,6 +1002,7 @@ static const meta_info meta_info_list[] = {
         {meta_SMC_SMH,              "Genki SMC+SMH header"},
         {meta_OGG_YS8,              "Ogg Vorbis (Ys VIII header)"},
         {meta_PPST,                 "Parappa PPST header"},
+        {meta_OPUS_PPP,             "AT9 OPUS header"},
 
 #ifdef VGM_USE_FFMPEG
         {meta_FFmpeg,               "FFmpeg supported file format"},

src/libvgmstream.vcproj

@@ -737,6 +737,10 @@
                 <File
                     RelativePath=".\meta\omu.c"
                     >
+                </File>
+                <File
+                    RelativePath=".\meta\opus_ppp.c"
+                    >
                 </File>
 				<File
 					RelativePath=".\meta\otm.c"

src/libvgmstream.vcxproj

@@ -290,6 +290,7 @@
     <ClCompile Include="meta\ogg_vorbis.c" />
     <ClCompile Include="meta\ogl.c" />
     <ClCompile Include="meta\omu.c" />
+    <ClCompile Include="meta\opus_ppp.c" />
     <ClCompile Include="meta\otm.c" />
     <ClCompile Include="meta\p3d.c" />
     <ClCompile Include="meta\pc_al2.c" />

src/libvgmstream.vcxproj.filters

@@ -445,6 +445,9 @@
     <ClCompile Include="meta\omu.c">
       <Filter>meta\Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="meta\opus_ppp.c">
+      <Filter>meta\Source Files</Filter>
+    </ClCompile>
     <ClCompile Include="meta\otm.c">
       <Filter>meta\Source Files</Filter>
     </ClCompile>

src/meta/meta.h

@@ -742,4 +742,6 @@ VGMSTREAM * init_vgmstream_ea_sps_fb(STREAMFILE *streamFile);
 
 VGMSTREAM * init_vgmstream_ppst(STREAMFILE *streamFile);
 
+VGMSTREAM * init_vgmstream_opus_ppp(STREAMFILE *streamFile);
+
 #endif /*_META_H*/

src/meta/opus_ppp.c

@@ -0,0 +1,120 @@
+#include "meta.h"
+#include "../coding/coding.h"
+#include "../layout/layout.h"
+
+static STREAMFILE* setup_opus_ppp_streamfile(STREAMFILE *streamFile, off_t subfile_offset, size_t subfile_size, const char* fake_ext);
+
+/* .AT9 Opus - from Penny-Punching Princess (Switch) */
+VGMSTREAM * init_vgmstream_opus_ppp(STREAMFILE *streamFile) {
+    VGMSTREAM * vgmstream = NULL;
+    off_t segment_offset;
+    int loop_flag, channel_count;
+    int i;
+
+    segmented_layout_data *data = NULL;
+    int segment_count, loop_start_segment = 0, loop_end_segment = 0;
+    int num_samples = 0, loop_start_sample = 0, loop_end_sample = 0;
+
+
+    /* checks */
+    if (!check_extensions(streamFile, "at9"))
+        goto fail;
+    if (read_32bitBE(0x00,streamFile) != 0x09000000) /* file type? DSPs had 08 */
+        goto fail;
+    if (read_32bitLE(0x04,streamFile) + 0x1c != get_streamfile_size(streamFile))
+        goto fail;
+    /* 0x08(2): sample rate, 0x0a(2): loop flag?, 0x0c: num_samples (slightly smaller than added samples) */
+
+    segment_count = 3; /* intro/loop/end */
+    loop_start_segment = 1;
+    loop_end_segment = 1;
+    loop_flag = (segment_count > 0);
+
+    /* init layout */
+    data = init_layout_segmented(segment_count);
+    if (!data) goto fail;
+
+    /* open each segment subfile */
+    segment_offset = 0x1c;
+    for (i = 0; i < segment_count; i++) {
+        STREAMFILE* temp_streamFile;
+        size_t segment_size = read_32bitLE(0x10+0x04*i,streamFile);
+
+        if (!segment_size)
+            goto fail;
+
+        temp_streamFile = setup_opus_ppp_streamfile(streamFile, segment_offset,segment_size, "opus");
+        if (!temp_streamFile) goto fail;
+
+        data->segments[i] = init_vgmstream_nsw_opus(temp_streamFile);
+        close_streamfile(temp_streamFile);
+        if (!data->segments[i]) goto fail;
+
+        segment_offset += segment_size;
+
+        //todo there are some trailing samples that must be removed for smooth loops, start skip seems ok
+        data->segments[i]->num_samples -= 374; //not correct for all files, no idea how to calculate
+
+        /* get looping and samples */
+        if (loop_flag && loop_start_segment == i)
+            loop_start_sample = num_samples;
+
+        num_samples += data->segments[i]->num_samples;
+
+        if (loop_flag && loop_end_segment == i)
+            loop_end_sample = num_samples;
+    }
+
+    /* setup segmented VGMSTREAMs */
+    if (!setup_layout_segmented(data))
+        goto fail;
+
+
+    channel_count = data->segments[0]->channels;
+
+    /* build the VGMSTREAM */
+    vgmstream = allocate_vgmstream(channel_count,loop_flag);
+    if (!vgmstream) goto fail;
+
+    vgmstream->sample_rate = (uint16_t)read_16bitLE(0x08,streamFile);
+    vgmstream->num_samples = num_samples;
+    vgmstream->loop_start_sample = loop_start_sample;
+    vgmstream->loop_end_sample = loop_end_sample;
+
+    vgmstream->meta_type = meta_OPUS_PPP;
+    vgmstream->coding_type = data->segments[0]->coding_type;
+    vgmstream->layout_type = layout_segmented;
+
+    vgmstream->layout_data = data;
+    data->loop_segment = loop_start_segment;
+
+    return vgmstream;
+
+fail:
+    close_vgmstream(vgmstream);
+    free_layout_segmented(data);
+    return NULL;
+}
+
+static STREAMFILE* setup_opus_ppp_streamfile(STREAMFILE *streamFile, off_t subfile_offset, size_t subfile_size, const char* fake_ext) {
+    STREAMFILE *temp_streamFile = NULL, *new_streamFile = NULL;
+
+    /* setup subfile */
+    new_streamFile = open_wrap_streamfile(streamFile);
+    if (!new_streamFile) goto fail;
+    temp_streamFile = new_streamFile;
+
+    new_streamFile = open_clamp_streamfile(temp_streamFile, subfile_offset,subfile_size);
+    if (!new_streamFile) goto fail;
+    temp_streamFile = new_streamFile;
+
+    new_streamFile = open_fakename_streamfile(temp_streamFile, NULL,fake_ext);
+    if (!new_streamFile) goto fail;
+    temp_streamFile = new_streamFile;
+
+    return temp_streamFile;
+
+fail:
+    close_streamfile(temp_streamFile);
+    return NULL;
+}

src/vgmstream.c

@@ -401,6 +401,7 @@ VGMSTREAM * (*init_vgmstream_functions[])(STREAMFILE *streamFile) = {
     init_vgmstream_smc_smh,
     init_vgmstream_ea_sps_fb,
     init_vgmstream_ppst,
+    init_vgmstream_opus_ppp,
 
     init_vgmstream_txth,  /* should go at the end (lower priority) */
 #ifdef VGM_USE_FFMPEG

src/vgmstream.h

@@ -672,6 +672,7 @@ typedef enum {
     meta_SMC_SMH,           /* Wangan Midnight (System 246) */
     meta_OGG_YS8,           /* Ogg Vorbis with encryption (Ys VIII PC) */
     meta_PPST,              /* PPST [Parappa the Rapper (PSP)] */
+    meta_OPUS_PPP,          /* .at9 Opus [Penny-Punching Princess (Switch)] */
 
 #ifdef VGM_USE_FFMPEG
     meta_FFmpeg,