mirror of
https://github.com/vgmstream/vgmstream.git
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580 lines
22 KiB
C
580 lines
22 KiB
C
#ifdef VGM_USE_VORBIS
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#include <stdio.h>
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#include <string.h>
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#include "meta.h"
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#include "../coding/coding.h"
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#include "ogg_vorbis_streamfile.h"
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static void um3_ogg_decryption_callback(void *ptr, size_t size, size_t nmemb, void *datasource) {
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uint8_t *ptr8 = ptr;
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size_t bytes_read = size * nmemb;
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ogg_vorbis_io *io = datasource;
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int i;
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/* first 0x800 bytes are xor'd */
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if (io->offset < 0x800) {
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int num_crypt = 0x800 - io->offset;
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if (num_crypt > bytes_read)
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num_crypt = bytes_read;
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for (i = 0; i < num_crypt; i++)
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ptr8[i] ^= 0xff;
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}
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}
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static void kovs_ogg_decryption_callback(void *ptr, size_t size, size_t nmemb, void *datasource) {
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uint8_t *ptr8 = ptr;
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size_t bytes_read = size * nmemb;
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ogg_vorbis_io *io = datasource;
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int i;
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/* first 0x100 bytes are xor'd */
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if (io->offset < 0x100) {
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int max_offset = io->offset + bytes_read;
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if (max_offset > 0x100)
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max_offset = 0x100;
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for (i = io->offset; i < max_offset; i++) {
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ptr8[i-io->offset] ^= i;
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}
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}
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}
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static void psychic_ogg_decryption_callback(void *ptr, size_t size, size_t nmemb, void *datasource) {
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static const uint8_t key[6] = {
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0x23,0x31,0x20,0x2e,0x2e,0x28
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};
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uint8_t *ptr8 = ptr;
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size_t bytes_read = size * nmemb;
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ogg_vorbis_io *io = datasource;
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int i;
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//todo incorrect, picked value changes (fixed order for all files), or key is bigger
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/* bytes add key that changes every 0x64 bytes */
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for (i = 0; i < bytes_read; i++) {
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int pos = (io->offset + i) / 0x64;
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ptr8[i] += key[pos % sizeof(key)];
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}
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}
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static void rpgmvo_ogg_decryption_callback(void *ptr, size_t size, size_t nmemb, void *datasource) {
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static const uint8_t header[16] = { /* OggS, packet type, granule, stream id(empty) */
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0x4F,0x67,0x67,0x53,0x00,0x02,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00
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};
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uint8_t *ptr8 = ptr;
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size_t bytes_read = size*nmemb;
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ogg_vorbis_io *io = datasource;
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int i;
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/* first 0x10 are xor'd, but header can be easily reconstructed
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* (key is also in (game)/www/data/System.json "encryptionKey") */
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for (i = 0; i < bytes_read; i++) {
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if (io->offset+i < 0x10) {
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ptr8[i] = header[(io->offset + i) % 16];
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/* last two bytes are the stream id, get from next OggS */
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if (io->offset+i == 0x0e)
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ptr8[i] = read_8bit(0x58, io->streamfile);
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if (io->offset+i == 0x0f)
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ptr8[i] = read_8bit(0x59, io->streamfile);
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}
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}
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}
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static const uint32_t xiph_mappings[] = {
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0,
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mapping_MONO,
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mapping_STEREO,
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mapping_2POINT1_xiph,
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mapping_QUAD,
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mapping_5POINT0_xiph,
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mapping_5POINT1,
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mapping_7POINT0,
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mapping_7POINT1,
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};
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/* Ogg Vorbis, may contain loop comments */
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VGMSTREAM * init_vgmstream_ogg_vorbis(STREAMFILE *streamFile) {
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VGMSTREAM * vgmstream = NULL;
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STREAMFILE *temp_streamFile = NULL;
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ogg_vorbis_io_config_data cfg = {0};
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ogg_vorbis_meta_info_t ovmi = {0};
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off_t start_offset = 0;
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int is_ogg = 0;
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int is_um3 = 0;
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int is_kovs = 0;
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int is_sngw = 0;
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int is_isd = 0;
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int is_rpgmvo = 0;
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int is_eno = 0;
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int is_gwm = 0;
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int is_mus = 0;
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int is_lse = 0;
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int is_bgm = 0;
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/* check extension */
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/* .ogg: standard/various, .logg: renamed for plugins
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* .adx: KID games [Remember11 (PC)]
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* .rof: The Rhythm of Fighters (Mobile)
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* .acm: Planescape Torment Enhanced Edition (PC)
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* .sod: Zone 4 (PC)
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* .aif/laif/aif-Loop: Psychonauts (PC) raw extractions (named) */
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if (check_extensions(streamFile,"ogg,logg,adx,rof,acm,sod,aif,laif,aif-Loop")) {
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is_ogg = 1;
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} else if (check_extensions(streamFile,"um3")) {
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is_um3 = 1;
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} else if (check_extensions(streamFile,"kvs,kovs")) {
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/* .kvs: Atelier Sophie (PC), kovs: header id only? */
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is_kovs = 1;
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} else if (check_extensions(streamFile,"sngw")) { /* .sngw: Capcom [Devil May Cry 4 SE (PC), Biohazard 6 (PC)] */
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is_sngw = 1;
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} else if (check_extensions(streamFile,"isd")) { /* .isd: Inti Creates PC games */
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is_isd = 1;
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} else if (check_extensions(streamFile,"rpgmvo")) { /* .rpgmvo: RPG Maker MV games (PC) */
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is_rpgmvo = 1;
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} else if (check_extensions(streamFile,"eno")) { /* .eno: Metronomicon (PC) */
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is_eno = 1;
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} else if (check_extensions(streamFile,"gwm")) { /* .gwm: Adagio: Cloudburst (PC) */
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is_gwm = 1;
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} else if (check_extensions(streamFile,"mus")) { /* .mus: Redux - Dark Matters (PC) */
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is_mus = 1;
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} else if (check_extensions(streamFile,"lse")) { /* .lse: Labyrinth of Refrain: Coven of Dusk (PC) */
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is_lse = 1;
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} else if (check_extensions(streamFile,"bgm")) { /* .bgm: Fortissimo (PC) */
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is_bgm = 1;
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} else {
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goto fail;
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}
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if (is_ogg) {
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if (read_32bitBE(0x00,streamFile) == 0x2c444430) { /* Psychic Software [Darkwind: War on Wheels (PC)] */
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ovmi.decryption_callback = psychic_ogg_decryption_callback;
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}
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else if (read_32bitBE(0x00,streamFile) == 0x4C325344) { /* "L2SD" instead of "OggS" [Lineage II Chronicle 4 (PC)] */
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cfg.is_header_swap = 1;
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cfg.is_encrypted = 1;
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}
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else if (read_32bitBE(0x00,streamFile) == 0x048686C5) { /* "OggS" XOR'ed + bitswapped [Ys VIII (PC)] */
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cfg.key[0] = 0xF0;
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cfg.key_len = 1;
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cfg.is_nibble_swap = 1;
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cfg.is_encrypted = 1;
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}
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else if (read_32bitBE(0x00,streamFile) == 0x00000000 && /* null instead of "OggS" [Yuppie Psycho (PC)] */
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read_32bitBE(0x3a,streamFile) == 0x4F676753) { /* "OggS" in next page */
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cfg.is_header_swap = 1;
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cfg.is_encrypted = 1;
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}
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else if (read_32bitBE(0x00,streamFile) == 0x4F676753) { /* "OggS" (standard) */
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;
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}
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else {
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goto fail; /* unknown/not Ogg Vorbis (ex. Wwise) */
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}
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}
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if (is_um3) { /* ["Ultramarine3" (???)] */
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if (read_32bitBE(0x00,streamFile) != 0x4f676753) { /* "OggS" (optionally encrypted) */
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ovmi.decryption_callback = um3_ogg_decryption_callback;
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}
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}
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if (is_kovs) { /* Koei Tecmo PC games */
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if (read_32bitBE(0x00,streamFile) != 0x4b4f5653) { /* "KOVS" */
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goto fail;
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}
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ovmi.loop_start = read_32bitLE(0x08,streamFile);
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ovmi.loop_flag = (ovmi.loop_start != 0);
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ovmi.decryption_callback = kovs_ogg_decryption_callback;
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ovmi.meta_type = meta_OGG_KOVS;
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start_offset = 0x20;
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}
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if (is_sngw) { /* [Capcom's MT Framework PC games] */
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if (read_32bitBE(0x00,streamFile) != 0x4f676753) { /* "OggS" (optionally encrypted) */
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cfg.key_len = read_streamfile(cfg.key, 0x00, 0x04, streamFile);
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cfg.is_header_swap = 1;
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cfg.is_nibble_swap = 1;
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cfg.is_encrypted = 1;
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}
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ovmi.disable_reordering = 1; /* must be an MT Framework thing */
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}
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if (is_isd) { /* Inti Creates PC games */
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const char *isl_name = NULL;
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/* check various encrypted "OggS" values */
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if (read_32bitBE(0x00,streamFile) == 0xAF678753) { /* Azure Striker Gunvolt (PC) */
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static const uint8_t isd_gv_key[16] = {
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0xe0,0x00,0xe0,0x00,0xa0,0x00,0x00,0x00,0xe0,0x00,0xe0,0x80,0x40,0x40,0x40,0x00
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};
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cfg.key_len = sizeof(isd_gv_key);
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memcpy(cfg.key, isd_gv_key, cfg.key_len);
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isl_name = "GV_steam.isl";
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}
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else if (read_32bitBE(0x00,streamFile) == 0x0FE787D3) { /* Mighty Gunvolt (PC) */
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static const uint8_t isd_mgv_key[120] = {
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0x40,0x80,0xE0,0x80,0x40,0x40,0xA0,0x00,0xA0,0x40,0x00,0x80,0x00,0x40,0xA0,0x00,
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0xC0,0x40,0xE0,0x00,0x60,0x40,0x80,0x00,0xA0,0x00,0xE0,0x00,0x60,0x40,0xC0,0x00,
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0xA0,0x40,0xC0,0x80,0xE0,0x00,0x60,0x00,0x00,0x40,0x00,0x80,0xE0,0x80,0x40,0x00,
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0xA0,0x80,0xA0,0x80,0x80,0xC0,0x60,0x00,0xA0,0x00,0xA0,0x80,0x40,0x80,0x60,0x00,
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0x40,0xC0,0x20,0x00,0x20,0xC0,0x00,0x00,0x00,0xC0,0x20,0x00,0xC0,0xC0,0x60,0x00,
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0xE0,0xC0,0x80,0x80,0x20,0x00,0x60,0x00,0xE0,0xC0,0xC0,0x00,0x20,0xC0,0xC0,0x00,
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0x60,0x00,0xE0,0x80,0x00,0xC0,0x00,0x00,0x60,0x80,0x40,0x80,0x20,0x80,0x20,0x00,
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0x80,0x40,0xE0,0x00,0x20,0x00,0x20,0x00,
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};
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cfg.key_len = sizeof(isd_mgv_key);
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memcpy(cfg.key, isd_mgv_key, cfg.key_len);
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isl_name = "MGV_steam.isl";
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}
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else if (read_32bitBE(0x00,streamFile) == 0x0FA74753) { /* Blaster Master Zero (PC) */
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static const uint8_t isd_bmz_key[120] = {
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0x40,0xC0,0x20,0x00,0x40,0xC0,0xC0,0x00,0x00,0x80,0xE0,0x80,0x80,0x40,0x20,0x00,
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0x60,0xC0,0xC0,0x00,0xA0,0x80,0x60,0x00,0x40,0x40,0x20,0x00,0x60,0x40,0xC0,0x00,
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0x60,0x80,0xC0,0x80,0x40,0xC0,0x00,0x00,0xA0,0xC0,0x80,0x80,0x60,0x80,0xA0,0x00,
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0x40,0x80,0x60,0x00,0x20,0x00,0xC0,0x00,0x60,0x00,0xA0,0x80,0x40,0x40,0xA0,0x00,
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0x40,0x40,0xC0,0x80,0x00,0x80,0x60,0x00,0x80,0xC0,0xA0,0x00,0xE0,0x40,0xC0,0x00,
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0x20,0x80,0xE0,0x00,0x40,0xC0,0xA0,0x00,0xE0,0xC0,0xC0,0x80,0xE0,0x80,0xC0,0x00,
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0x40,0x40,0x00,0x00,0x20,0x40,0x80,0x00,0xE0,0x80,0x20,0x80,0x40,0x80,0xE0,0x00,
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0xA0,0x00,0xC0,0x80,0xE0,0x00,0x20,0x00
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};
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cfg.key_len = sizeof(isd_bmz_key);
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memcpy(cfg.key, isd_bmz_key, cfg.key_len);
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isl_name = "output.isl";
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}
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else {
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goto fail;
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}
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cfg.is_encrypted = 1;
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/* .isd have companion files in the prev folder:
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* - .ish: constant id/names (not always)
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* - .isf: format table, ordered like file id/numbers, 0x18 header with:
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* 0x00(2): ?, 0x02(2): channels, 0x04: sample rate, 0x08: skip samples (in PCM bytes), always 32000
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* 0x0c(2): PCM block size, 0x0e(2): PCM bps, 0x10: null, 0x18: samples (in PCM bytes)
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* - .isl: looping table (encrypted like the files) */
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if (isl_name) {
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STREAMFILE *islFile = NULL;
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islFile = open_streamfile_by_filename(streamFile, isl_name);
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if (!islFile) {
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/* try in ../(file) too since that's how the .isl is stored on disc */
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char isl_path[PATH_LIMIT];
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snprintf(isl_path, sizeof(isl_path), "../%s", isl_name);
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islFile = open_streamfile_by_filename(streamFile, isl_path);
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}
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if (islFile) {
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STREAMFILE *dec_sf = NULL;
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dec_sf = setup_ogg_vorbis_streamfile(islFile, cfg);
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if (dec_sf) {
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off_t loop_offset;
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char basename[PATH_LIMIT];
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/* has a bunch of tables then a list with file names without extension and loops */
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loop_offset = read_32bitLE(0x18, dec_sf);
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get_streamfile_basename(streamFile, basename, sizeof(basename));
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while (loop_offset < get_streamfile_size(dec_sf)) {
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char testname[0x20];
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read_string(testname, sizeof(testname), loop_offset+0x2c, dec_sf);
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if (strcmp(basename, testname) == 0) {
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ovmi.loop_start = read_32bitLE(loop_offset+0x1c, dec_sf);
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ovmi.loop_end = read_32bitLE(loop_offset+0x20, dec_sf);
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ovmi.loop_end_found = 1;
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ovmi.loop_flag = (ovmi.loop_end != 0);
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break;
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}
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loop_offset += 0x50;
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}
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close_streamfile(dec_sf);
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}
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close_streamfile(islFile);
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}
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}
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}
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if (is_rpgmvo) { /* [RPG Maker MV (PC)] */
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if (read_32bitBE(0x00,streamFile) != 0x5250474D && /* "RPGM" */
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read_32bitBE(0x00,streamFile) != 0x56000000) { /* "V\0\0\0" */
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goto fail;
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}
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ovmi.decryption_callback = rpgmvo_ogg_decryption_callback;
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start_offset = 0x10;
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}
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if (is_eno) { /* [Metronomicon (PC)] */
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/* first byte probably derives into key, but this works too */
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cfg.key[0] = (uint8_t)read_8bit(0x05,streamFile); /* regular ogg have a zero at this offset = easy key */
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cfg.key_len = 1;
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cfg.is_encrypted = 1;
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start_offset = 0x01; /* "OggS" starts after key-thing */
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}
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if (is_gwm) { /* [Adagio: Cloudburst (PC)] */
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cfg.key[0] = 0x5D;
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cfg.key_len = 1;
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cfg.is_encrypted = 1;
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}
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if (is_mus) { /* [Redux: Dark Matters (PC)] */
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static const uint8_t mus_key[16] = {
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0x21,0x4D,0x6F,0x01,0x20,0x4C,0x6E,0x02,0x1F,0x4B,0x6D,0x03,0x20,0x4C,0x6E,0x02
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};
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cfg.key_len = sizeof(mus_key);
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memcpy(cfg.key, mus_key, cfg.key_len);
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cfg.is_header_swap = 1; /* decrypted header gives "Mus " */
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cfg.is_encrypted = 1;
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}
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if (is_lse) { /* [Nippon Ichi PC games] */
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if (read_32bitBE(0x00,streamFile) == 0xFFFFFFFF) { /* [Operation Abyss: New Tokyo Legacy (PC)] */
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cfg.key[0] = 0xFF;
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cfg.key_len = 1;
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cfg.is_header_swap = 1;
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cfg.is_encrypted = 1;
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}
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else { /* [Operation Babel: New Tokyo Legacy (PC), Labyrinth of Refrain: Coven of Dusk (PC)] */
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int i;
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/* found at file_size-1 but this works too (same key for most files but can vary) */
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uint8_t base_key = (uint8_t)read_8bit(0x04,streamFile) - 0x04;
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cfg.key_len = 256;
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for (i = 0; i < cfg.key_len; i++) {
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cfg.key[i] = (uint8_t)(base_key + i);
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}
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cfg.is_encrypted = 1;
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}
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}
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if (is_bgm) { /* [Fortissimo (PC)] */
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size_t file_size = get_streamfile_size(streamFile);
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uint8_t key[0x04];
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uint32_t xor_be;
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put_32bitLE(key, (uint32_t)file_size);
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xor_be = (uint32_t)get_32bitBE(key);
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if ((read_32bitBE(0x00,streamFile) ^ xor_be) == 0x4F676753) { /* "OggS" */
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int i;
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cfg.key_len = 4;
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for (i = 0; i < cfg.key_len; i++) {
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cfg.key[i] = key[i];
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}
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cfg.is_encrypted = 1;
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}
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}
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if (cfg.is_encrypted) {
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|
temp_streamFile = setup_ogg_vorbis_streamfile(streamFile, cfg);
|
|
if (!temp_streamFile) goto fail;
|
|
}
|
|
|
|
if (ovmi.meta_type == 0) {
|
|
if (cfg.is_encrypted || ovmi.decryption_callback != NULL)
|
|
ovmi.meta_type = meta_OGG_encrypted;
|
|
else
|
|
ovmi.meta_type = meta_OGG_VORBIS;
|
|
}
|
|
|
|
vgmstream = init_vgmstream_ogg_vorbis_callbacks(temp_streamFile != NULL ? temp_streamFile : streamFile, NULL, start_offset, &ovmi);
|
|
|
|
close_streamfile(temp_streamFile);
|
|
return vgmstream;
|
|
|
|
fail:
|
|
close_streamfile(temp_streamFile);
|
|
return NULL;
|
|
}
|
|
|
|
VGMSTREAM * init_vgmstream_ogg_vorbis_callbacks(STREAMFILE *streamFile, ov_callbacks *callbacks, off_t start, const ogg_vorbis_meta_info_t *ovmi) {
|
|
VGMSTREAM * vgmstream = NULL;
|
|
ogg_vorbis_codec_data* data = NULL;
|
|
ogg_vorbis_io io = {0};
|
|
char name[STREAM_NAME_SIZE] = {0};
|
|
int channels, sample_rate, num_samples;
|
|
|
|
int loop_flag = ovmi->loop_flag;
|
|
int32_t loop_start = ovmi->loop_start;
|
|
int loop_length_found = ovmi->loop_length_found;
|
|
int32_t loop_length = ovmi->loop_length;
|
|
int loop_end_found = ovmi->loop_end_found;
|
|
int32_t loop_end = ovmi->loop_end;
|
|
size_t stream_size = ovmi->stream_size ?
|
|
ovmi->stream_size :
|
|
get_streamfile_size(streamFile) - start;
|
|
int disable_reordering = ovmi->disable_reordering;
|
|
|
|
|
|
//todo improve how to pass config
|
|
io.decryption_callback = ovmi->decryption_callback;
|
|
io.scd_xor = ovmi->scd_xor;
|
|
io.scd_xor_length = ovmi->scd_xor_length;
|
|
io.xor_value = ovmi->xor_value;
|
|
|
|
data = init_ogg_vorbis(streamFile, start, stream_size, &io);
|
|
if (!data) goto fail;
|
|
|
|
/* search for loop comments */
|
|
{//todo ignore if loop flag already set?
|
|
const char * comment = NULL;
|
|
|
|
while (ogg_vorbis_get_comment(data, &comment)) {
|
|
|
|
if (strstr(comment,"loop_start=") == comment || /* PSO4 */
|
|
strstr(comment,"LOOP_START=") == comment || /* PSO4 */
|
|
strstr(comment,"COMMENT=LOOPPOINT=") == comment ||
|
|
strstr(comment,"LOOPSTART=") == comment ||
|
|
strstr(comment,"um3.stream.looppoint.start=") == comment ||
|
|
strstr(comment,"LOOP_BEGIN=") == comment || /* Hatsune Miku: Project Diva F (PS3) */
|
|
strstr(comment,"LoopStart=") == comment || /* Devil May Cry 4 (PC) */
|
|
strstr(comment,"XIPH_CUE_LOOPSTART=") == comment) { /* Super Mario Run (Android) */
|
|
loop_start = atol(strrchr(comment,'=')+1);
|
|
loop_flag = (loop_start >= 0);
|
|
}
|
|
else if (strstr(comment,"LOOPLENGTH=") == comment) {/* (LOOPSTART pair) */
|
|
loop_length = atol(strrchr(comment,'=')+1);
|
|
loop_length_found = 1;
|
|
}
|
|
else if (strstr(comment,"title=-lps") == comment) { /* KID [Memories Off #5 (PC), Remember11 (PC)] */
|
|
loop_start = atol(comment+10);
|
|
loop_flag = (loop_start >= 0);
|
|
}
|
|
else if (strstr(comment,"album=-lpe") == comment) { /* (title=-lps pair) */
|
|
loop_end = atol(comment+10);
|
|
loop_flag = 1;
|
|
loop_end_found = 1;
|
|
}
|
|
else if (strstr(comment,"LoopEnd=") == comment) { /* (LoopStart pair) */
|
|
if(loop_flag) {
|
|
loop_length = atol(strrchr(comment,'=')+1)-loop_start;
|
|
loop_length_found = 1;
|
|
}
|
|
}
|
|
else if (strstr(comment,"LOOP_END=") == comment) { /* (LOOP_BEGIN pair) */
|
|
if(loop_flag) {
|
|
loop_length = atol(strrchr(comment,'=')+1)-loop_start;
|
|
loop_length_found = 1;
|
|
}
|
|
}
|
|
else if (strstr(comment,"lp=") == comment) {
|
|
sscanf(strrchr(comment,'=')+1,"%d,%d", &loop_start,&loop_end);
|
|
loop_flag = 1;
|
|
loop_end_found = 1;
|
|
}
|
|
else if (strstr(comment,"LOOPDEFS=") == comment) { /* Fairy Fencer F: Advent Dark Force */
|
|
sscanf(strrchr(comment,'=')+1,"%d,%d", &loop_start,&loop_end);
|
|
loop_flag = 1;
|
|
loop_end_found = 1;
|
|
}
|
|
else if (strstr(comment,"COMMENT=loop(") == comment) { /* Zero Time Dilemma (PC) */
|
|
sscanf(strrchr(comment,'(')+1,"%d,%d", &loop_start,&loop_end);
|
|
loop_flag = 1;
|
|
loop_end_found = 1;
|
|
}
|
|
else if (strstr(comment, "XIPH_CUE_LOOPEND=") == comment) { /* (XIPH_CUE_LOOPSTART pair) */
|
|
if (loop_flag) {
|
|
loop_length = atol(strrchr(comment, '=') + 1) - loop_start;
|
|
loop_length_found = 1;
|
|
}
|
|
}
|
|
else if (strstr(comment, "omment=") == comment) { /* Air (Android) */
|
|
sscanf(strstr(comment, "=LOOPSTART=") + 11, "%d,LOOPEND=%d", &loop_start, &loop_end);
|
|
loop_flag = 1;
|
|
loop_end_found = 1;
|
|
}
|
|
else if (strstr(comment,"MarkerNum=0002") == comment) { /* Megaman X Legacy Collection: MMX1/2/3 (PC) flag */
|
|
/* uses LoopStart=-1 LoopEnd=-1, then 3 secuential comments: "MarkerNum" + "M=7F(start)" + "M=7F(end)" */
|
|
loop_flag = 1;
|
|
}
|
|
else if (strstr(comment,"M=7F") == comment) { /* Megaman X Legacy Collection: MMX1/2/3 (PC) start/end */
|
|
if (loop_flag && loop_start < 0) { /* LoopStart should set as -1 before */
|
|
sscanf(comment,"M=7F%x", &loop_start);
|
|
}
|
|
else if (loop_flag && loop_start >= 0) {
|
|
sscanf(comment,"M=7F%x", &loop_end);
|
|
loop_end_found = 1;
|
|
}
|
|
}
|
|
|
|
/* Hatsune Miku Project DIVA games, though only 'Arcade Future Tone' has >4ch files
|
|
* ENCODER tag is common but ogg_vorbis_encode looks unique enough
|
|
* (arcade ends with "2010-11-26" while consoles have "2011-02-07" */
|
|
if (strstr(comment, "ENCODER=ogg_vorbis_encode/") == comment) {
|
|
disable_reordering = 1;
|
|
}
|
|
|
|
if (strstr(comment, "TITLE=") == comment) {
|
|
strncpy(name, comment + 6, sizeof(name) - 1);
|
|
}
|
|
|
|
;VGM_LOG("OGG: user_comment=%s\n", comment);
|
|
}
|
|
}
|
|
|
|
ogg_vorbis_set_disable_reordering(data, disable_reordering);
|
|
ogg_vorbis_get_info(data, &channels, &sample_rate);
|
|
ogg_vorbis_get_samples(data, &num_samples); /* let libvorbisfile find total samples */
|
|
|
|
|
|
/* build the VGMSTREAM */
|
|
vgmstream = allocate_vgmstream(channels,loop_flag);
|
|
if (!vgmstream) goto fail;
|
|
|
|
vgmstream->codec_data = data;
|
|
vgmstream->coding_type = coding_OGG_VORBIS;
|
|
vgmstream->layout_type = layout_none;
|
|
vgmstream->meta_type = ovmi->meta_type;
|
|
|
|
vgmstream->sample_rate = sample_rate;
|
|
vgmstream->stream_size = stream_size;
|
|
|
|
if (ovmi->total_subsongs) /* not setting it has some effect when showing stream names */
|
|
vgmstream->num_streams = ovmi->total_subsongs;
|
|
|
|
if (name[0] != '\0')
|
|
strcpy(vgmstream->stream_name, name);
|
|
|
|
vgmstream->num_samples = num_samples;
|
|
if (loop_flag) {
|
|
vgmstream->loop_start_sample = loop_start;
|
|
if (loop_length_found)
|
|
vgmstream->loop_end_sample = loop_start + loop_length;
|
|
else if (loop_end_found)
|
|
vgmstream->loop_end_sample = loop_end;
|
|
else
|
|
vgmstream->loop_end_sample = vgmstream->num_samples;
|
|
|
|
if (vgmstream->loop_end_sample > vgmstream->num_samples)
|
|
vgmstream->loop_end_sample = vgmstream->num_samples;
|
|
}
|
|
|
|
if (vgmstream->channels <= 8) {
|
|
vgmstream->channel_layout = xiph_mappings[vgmstream->channels];
|
|
}
|
|
|
|
return vgmstream;
|
|
|
|
fail:
|
|
close_vgmstream(vgmstream);
|
|
return NULL;
|
|
}
|
|
|
|
#endif
|