#include "meta.h" #include "../coding/coding.h" static VGMSTREAM* init_vgmstream_ikm_ps2(STREAMFILE* sf) { VGMSTREAM* v = NULL; off_t start_offset; int loop_flag, channels; if (!is_id32be(0x40,sf, "AST\0")) goto fail; loop_flag = (read_s32le(0x14, sf) > 0); channels = read_s32le(0x50, sf); start_offset = 0x800; /* build the VGMSTREAM */ v = allocate_vgmstream(channels, loop_flag); if (!v) goto fail; v->meta_type = meta_IKM; v->sample_rate = read_s32le(0x44, sf); v->num_samples = ps_bytes_to_samples(read_s32le(0x4c, sf), channels); v->loop_start_sample = read_s32le(0x14, sf); v->loop_end_sample = read_s32le(0x18, sf); v->coding_type = coding_PSX; v->layout_type = layout_interleave; v->interleave_block_size = 0x10; /* @0x40 / channels */ if (!vgmstream_open_stream(v, sf, start_offset)) goto fail; return v; fail: close_vgmstream(v); return NULL; } static VGMSTREAM* init_vgmstream_ikm_pc(STREAMFILE* sf) { VGMSTREAM* v = NULL; off_t start_offset; /* find "OggS" start */ if (is_id32be(0x30,sf, "OggS")) start_offset = 0x30; /* Chaos Legion (PC) */ else start_offset = 0x800; /* Legend of Galactic Heroes (PC) */ { ogg_vorbis_meta_info_t ovmi = {0}; ovmi.meta_type = meta_IKM; ovmi.loop_start = read_s32le(0x14, sf); ovmi.loop_end = read_s32le(0x18, sf); ovmi.loop_end_found = ovmi.loop_end; ovmi.loop_flag = ovmi.loop_end > 0; ovmi.stream_size = read_s32le(0x24, sf); v = init_vgmstream_ogg_vorbis_config(sf, start_offset, &ovmi); if (!v) goto fail; } return v; fail: close_vgmstream(v); return NULL; } static VGMSTREAM* init_vgmstream_ikm_psp(STREAMFILE* sf) { VGMSTREAM* v = NULL; STREAMFILE* temp_sf = NULL; off_t start_offset; size_t data_size; if (!is_id32be(0x800,sf, "RIFF")) goto fail; /* loop values (pre-adjusted without encoder delay) at 0x14/18 are found in the RIFF too */ data_size = read_s32le(0x24, sf); start_offset = 0x800; temp_sf = setup_subfile_streamfile(sf, start_offset, data_size, "at3"); if (!temp_sf) goto fail; v = init_vgmstream_riff(temp_sf); if (!v) goto fail; v->meta_type = meta_IKM; close_streamfile(temp_sf); return v; fail: close_streamfile(temp_sf); close_vgmstream(v); return NULL; } /* IKM - MiCROViSiON container */ VGMSTREAM* init_vgmstream_ikm(STREAMFILE* sf) { uint32_t type; /* checks */ if (!is_id32be(0x00,sf, "IKM\0")) goto fail; if (!check_extensions(sf,"ikm")) goto fail; type = read_u32le(0x20, sf); switch(type) { case 0x00: /* The Legend of Heroes: A Tear of Vermillion (PSP) */ return init_vgmstream_ikm_psp(sf); case 0x01: /* Chaos Legion (PC), Legend of Galactic Heroes (PC) */ return init_vgmstream_ikm_pc(sf); case 0x03: /* Zwei (PS2) */ return init_vgmstream_ikm_ps2(sf); default: goto fail; } fail: return NULL; }