mirror of
https://github.com/vgmstream/vgmstream.git
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73 lines
2.4 KiB
C
73 lines
2.4 KiB
C
#include "meta.h"
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#include "../coding/coding.h"
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/* MIB+MIH - SCEE MultiStream interleaved bank (header+data) [namCollection: Ace Combat 2 (PS2), Rampage: Total Destruction (PS2)] */
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VGMSTREAM* init_vgmstream_mib_mih(STREAMFILE* sf) {
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VGMSTREAM* vgmstream = NULL;
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STREAMFILE* sh = NULL;
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off_t header_offset, start_offset;
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size_t data_size, frame_size, frame_last, frame_count;
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int channels, loop_flag, sample_rate;
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/* check extension */
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if (!check_extensions(sf, "mib"))
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goto fail;
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sh = open_streamfile_by_ext(sf,"mih");
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if (!sh) goto fail;
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header_offset = 0x00;
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if (read_u32le(0x00,sh) != 0x40) { /* header size */
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/* Marc Ecko's Getting Up (PS2) has a name at the start (hack, not standard .mib+mih) */
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size_t name_size = read_u32le(0x00, sh);
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if (read_u32le(0x04 + name_size, sh) == 0x40 &&
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read_u32le(0x04 + name_size + 0x04, sh) == 0x40) {
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header_offset = 0x04 + name_size + 0x04;
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} else {
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goto fail;
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}
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}
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loop_flag = 0; /* MIB+MIH don't loop (nor use PS-ADPCM flags) per spec */
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start_offset = 0x00;
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/* 0x04: padding size (always 0x20, MIH header must be multiple of 0x40) */
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frame_last = read_u32le(header_offset + 0x05,sh) & 0x00FFFFFF; /* 24b */
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channels = read_u32le(header_offset + 0x08,sh);
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sample_rate = read_u32le(header_offset + 0x0c,sh);
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frame_size = read_u32le(header_offset + 0x10,sh);
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frame_count = read_u32le(header_offset + 0x14,sh);
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if (frame_count == 0) { /* rarely [Gladius (PS2)] */
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frame_count = get_streamfile_size(sf) / (frame_size * channels);
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}
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data_size = frame_count * frame_size;
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if (frame_last)
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data_size -= frame_size - frame_last; /* last frame has less usable data */
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data_size *= channels;
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/* build the VGMSTREAM */
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vgmstream = allocate_vgmstream(channels, loop_flag);
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if (!vgmstream) goto fail;
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vgmstream->meta_type = meta_MIB_MIH;
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vgmstream->sample_rate = sample_rate;
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vgmstream->num_samples = ps_bytes_to_samples(data_size, channels);
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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 = frame_size;
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if (!vgmstream_open_stream(vgmstream, sf, start_offset))
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goto fail;
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close_streamfile(sh);
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return vgmstream;
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fail:
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close_streamfile(sh);
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close_vgmstream(vgmstream);
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return NULL;
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}
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