mirror of
https://github.com/vgmstream/vgmstream.git
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62 lines
1.9 KiB
C
62 lines
1.9 KiB
C
#include "meta.h"
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#include "../coding/coding.h"
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/* ASD - found Naxat (Spiel/Mesa) games [Miss Moonlight (DC), Yoshia no Oka de Nekoronde... (DC)] */
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VGMSTREAM* init_vgmstream_asd_naxat(STREAMFILE* sf) {
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VGMSTREAM* vgmstream = NULL;
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uint32_t start_offset;
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int loop_flag, channels, sample_rate;
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/* checks */
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uint32_t data_size = read_u32le(0x00, sf); /* padded and slightly less than file size */
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if (data_size == 0 || data_size >= get_streamfile_size(sf) || data_size + 0x20 + 0x10 < get_streamfile_size(sf))
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return NULL;
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if (data_size != read_u32le(0x04,sf)) /* repeated size */
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return NULL;
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/* extension of the audio bigfiles (there are N offsets to these subfiles) */
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if (!check_extensions(sf, "asd"))
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return NULL;
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/* fmt chunk, extra checks since format is simple */
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if (read_u16le(0x08,sf) != 0x01) /* format*/
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return NULL;
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channels = read_u16le(0x0a,sf);
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sample_rate = read_s32le(0x0c,sf);
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if (channels < 1 || channels > 2)
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return NULL;
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if (sample_rate != 22050)
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return NULL;
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if (sample_rate * channels * sizeof(int16_t) != read_u32le(0x10,sf)) /* bitrate */
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return NULL;
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/* 04: block size, bps */
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if (read_u32le(0x18,sf) != 0x00 )
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return NULL;
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if (read_u32le(0x1c,sf) != 0x00 )
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return NULL;
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start_offset = 0x20;
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loop_flag = 0;
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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_ASD_NAXAT;
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vgmstream->sample_rate = sample_rate;
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vgmstream->num_samples = pcm16_bytes_to_samples(data_size, channels);
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vgmstream->coding_type = coding_PCM16LE;
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vgmstream->layout_type = layout_interleave;
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vgmstream->interleave_block_size = 0x02;
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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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