mirror of
https://github.com/vgmstream/vgmstream.git
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66 lines
1.7 KiB
C
66 lines
1.7 KiB
C
#include "meta.h"
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#include "../coding/coding.h"
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/* .STRM - from Abylight 3DS games [Cursed Castilla (3DS)] */
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VGMSTREAM* init_vgmstream_strm_abylight(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, sample_rate, skip_samples;
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size_t data_size;
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/* checks */
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if (!is_id32be(0x00,sf, "STRM"))
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goto fail;
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if (!check_extensions(sf,"strm"))
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goto fail;
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if (read_32bitLE(0x04,sf) != 0x03E8) /* version 1000? */
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goto fail;
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loop_flag = 0;
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channel_count = 2; /* there are various possible fields but all files are stereo */
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sample_rate = read_32bitLE(0x08,sf);
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skip_samples = 1024; /* assumed, maybe a bit more */
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start_offset = 0x1e;
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data_size = read_32bitLE(0x10,sf);
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if (data_size != get_streamfile_size(sf) - start_offset)
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goto fail;
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if (data_size != read_32bitLE(0x18,sf))
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goto fail;
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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 = sample_rate;
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vgmstream->num_samples = aac_get_samples(sf, start_offset, data_size);
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vgmstream->meta_type = meta_STRM_ABYLIGHT;
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#ifdef VGM_USE_FFMPEG
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{
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vgmstream->codec_data = init_ffmpeg_aac(sf, start_offset, data_size, skip_samples);
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if (!vgmstream->codec_data) goto fail;
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vgmstream->coding_type = coding_FFmpeg;
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vgmstream->layout_type = layout_none;
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vgmstream->num_samples -= skip_samples;
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}
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#else
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goto fail;
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#endif
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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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