mirror of
https://github.com/vgmstream/vgmstream.git
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61 lines
2.1 KiB
C
61 lines
2.1 KiB
C
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#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 *streamFile) {
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VGMSTREAM * vgmstream = NULL;
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STREAMFILE * streamHeader = NULL;
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off_t start_offset;
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size_t data_size, frame_size, frame_last, frame_count;
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int channel_count, loop_flag;
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/* check extension */
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if (!check_extensions(streamFile, "mib"))
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goto fail;
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streamHeader = open_streamfile_by_ext(streamFile,"mih");
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if (!streamHeader) goto fail;
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if (read_32bitBE(0x00,streamHeader) != 0x40000000) /* header size */
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goto fail;
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loop_flag = 0; /* MIB+MIH don't PS-ADPCM loop flags */
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channel_count = read_32bitLE(0x08,streamHeader);
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start_offset = 0x00;
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/* 0x04: padding (0x20, MIH header must be multiple of 0x40) */
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frame_last = (uint16_t)read_16bitLE(0x05,streamHeader);
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frame_size = read_32bitLE(0x10,streamHeader);
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frame_count = read_32bitLE(0x14,streamHeader);
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if (frame_count == 0) { /* rarely [Gladius (PS2)] */
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frame_count = get_streamfile_size(streamFile) / (frame_size * channel_count);
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}
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data_size = frame_count * frame_size;
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data_size -= frame_last ? (frame_size-frame_last) : 0; /* last frame has less usable data */
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data_size *= channel_count;
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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->sample_rate = read_32bitLE(0x0C,streamHeader);
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vgmstream->num_samples = ps_bytes_to_samples(data_size, channel_count);
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vgmstream->meta_type = meta_PS2_MIB_MIH;
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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,streamFile,start_offset))
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goto fail;
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close_streamfile(streamHeader);
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return vgmstream;
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fail:
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close_streamfile(streamHeader);
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close_vgmstream(vgmstream);
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return NULL;
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}
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