47 lines
1.3 KiB
C
47 lines
1.3 KiB
C
#include "meta.h"
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/* ADP - from Omikron: The Nomad Soul (PC/DC) */
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VGMSTREAM* init_vgmstream_adp_qd(STREAMFILE* sf) {
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VGMSTREAM* vgmstream = NULL;
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off_t start_offset, data_size;
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int loop_flag = 0, channels, stereo_flag;
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/* checks */
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if (!check_extensions(sf,"adp"))
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goto fail;
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/* no ID, only a basic 0x10 header with filesize and nulls; do some extra checks */
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data_size = read_u32le(0x00,sf) & 0x00FFFFFF; /*24 bit*/
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if (data_size + 0x10 != sf->get_size(sf)
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|| read_u32le(0x04,sf) != 0
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|| read_u32le(0x08,sf) != 0
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|| read_u32le(0x0c,sf) != 0)
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goto fail;
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stereo_flag = read_u8(0x03, sf);
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if (stereo_flag > 1 || stereo_flag < 0) goto fail;
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channels = stereo_flag ? 2 : 1;
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start_offset = 0x10;
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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_QD_ADP;
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vgmstream->sample_rate = 22050;
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vgmstream->num_samples = data_size * 2 / channels;
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vgmstream->coding_type = coding_QD_IMA;
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vgmstream->layout_type = layout_none;
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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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