133 lines
3.5 KiB
C
133 lines
3.5 KiB
C
#include "meta.h"
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#include "../coding/coding.h"
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/* IKM - MiCROViSiON PS2 container [Zwei (PS2)] */
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VGMSTREAM* init_vgmstream_ikm_ps2(STREAMFILE* sf) {
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VGMSTREAM* vgmstream = NULL;
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off_t start_offset;
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int loop_flag, channel_count;
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/* checks */
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if ( !check_extensions(sf,"ikm") )
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goto fail;
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if (read_u32be(0x00,sf) != 0x494B4D00) /* "IKM\0" */
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goto fail;
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if (read_u32be(0x40,sf) != 0x41535400) /* "AST\0" */
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goto fail;
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/* 0x20: type 03? */
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loop_flag = (read_s32le(0x14, sf) > 0);
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channel_count = read_s32le(0x50, sf);
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start_offset = 0x800;
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/* build the VGMSTREAM */
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vgmstream = allocate_vgmstream(channel_count, loop_flag);
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if (!vgmstream) goto fail;
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vgmstream->meta_type = meta_IKM;
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vgmstream->sample_rate = read_s32le(0x44, sf);
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vgmstream->num_samples = ps_bytes_to_samples(read_s32le(0x4c, sf), channel_count);
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vgmstream->loop_start_sample = read_s32le(0x14, sf);
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vgmstream->loop_end_sample = read_s32le(0x18, sf);
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vgmstream->coding_type = coding_PSX;
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vgmstream->layout_type = layout_interleave;
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vgmstream->interleave_block_size = 0x10; /* @0x40 / channels */
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if (!vgmstream_open_stream(vgmstream, sf, start_offset))
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goto fail;
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return vgmstream;
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fail:
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close_vgmstream(vgmstream);
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return NULL;
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}
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/* IKM - MiCROViSiON PC container [Chaos Legion (PC), Legend of Galactic Heroes (PC)] */
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VGMSTREAM* init_vgmstream_ikm_pc(STREAMFILE* sf) {
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VGMSTREAM* vgmstream = NULL;
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off_t start_offset;
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/* checks */
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if ( !check_extensions(sf,"ikm") )
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goto fail;
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if (read_u32be(0x00,sf) != 0x494B4D00) /* "IKM\0" */
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goto fail;
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/* 0x20: type 01? */
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/* find "OggS" start */
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if (read_u32be(0x30,sf) == 0x4F676753) {
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start_offset = 0x30; /* Chaos Legion (PC) */
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} else if (read_u32be(0x800,sf) == 0x4F676753) {
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start_offset = 0x800; /* Legend of Galactic Heroes (PC) */
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} else {
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goto fail;
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}
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#ifdef VGM_USE_VORBIS
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{
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ogg_vorbis_meta_info_t ovmi = {0};
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ovmi.meta_type = meta_IKM;
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ovmi.loop_start = read_s32le(0x14, sf);
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ovmi.loop_end = read_s32le(0x18, sf);
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ovmi.loop_end_found = ovmi.loop_end;
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ovmi.loop_flag = ovmi.loop_end > 0;
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ovmi.stream_size = read_s32le(0x24, sf);
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vgmstream = init_vgmstream_ogg_vorbis_callbacks(sf, NULL, start_offset, &ovmi);
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}
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#else
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goto fail;
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#endif
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return vgmstream;
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fail:
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close_vgmstream(vgmstream);
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return NULL;
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}
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/* IKM - MiCROViSiON PSP container [The Legend of Heroes: A Tear of Vermillion (PSP)] */
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VGMSTREAM* init_vgmstream_ikm_psp(STREAMFILE* sf) {
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VGMSTREAM* vgmstream = NULL;
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STREAMFILE* temp_sf = NULL;
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off_t start_offset;
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size_t data_size;
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/* checks */
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if (!check_extensions(sf,"ikm"))
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goto fail;
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if (read_u32be(0x00,sf) != 0x494B4D00) /* "IKM\0" */
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goto fail;
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if (read_u32be(0x800,sf) != 0x52494646) /* "RIFF" */
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goto fail;
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/* 0x20: type 00? */
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/* loop values (pre-adjusted without encoder delay) at 0x14/18 are found in the RIFF too */
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data_size = read_s32le(0x24, sf);
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start_offset = 0x800;
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temp_sf = setup_subfile_streamfile(sf, start_offset, data_size, "at3");
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if (!temp_sf) goto fail;
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vgmstream = init_vgmstream_riff(temp_sf);
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if (!vgmstream) goto fail;
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vgmstream->meta_type = meta_IKM;
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close_streamfile(temp_sf);
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return vgmstream;
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fail:
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close_streamfile(temp_sf);
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close_vgmstream(vgmstream);
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return NULL;
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}
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