mirror of
https://github.com/vgmstream/vgmstream.git
synced 2024-12-19 09:55:53 +01:00
59 lines
1.8 KiB
C
59 lines
1.8 KiB
C
#include "meta.h"
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#include "../coding/coding.h"
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/* Entergram NXA Opus [Higurashi no Naku Koro ni Hou (Switch)] */
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VGMSTREAM * init_vgmstream_opus_nxa(STREAMFILE *streamFile) {
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VGMSTREAM * vgmstream = NULL;
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off_t start_offset;
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int loop_flag = 0, channel_count;
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size_t data_size, skip = 0;
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/* checks */
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if (!check_extensions(streamFile, "nxa"))
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goto fail;
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if (read_32bitBE(0x00, streamFile) != 0x4E584131) /* "NXA1" */
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goto fail;
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channel_count = read_16bitLE(0x10, streamFile);
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skip = read_16bitLE(0x16, streamFile);
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data_size = read_32bitLE(0x08, streamFile)-0x30;
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start_offset = 0x30;
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/* TODO: Determine if loop points are stored externally. No visible loop points in header */
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loop_flag = 0;
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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->meta_type = meta_NXA;
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vgmstream->num_samples = read_32bitLE(0x20, streamFile);
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vgmstream->sample_rate = read_32bitLE(0x0C, streamFile);
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#ifdef VGM_USE_FFMPEG
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{
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vgmstream->codec_data = init_ffmpeg_switch_opus(streamFile, start_offset, data_size, vgmstream->channels, skip, vgmstream->sample_rate);
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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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if (vgmstream->num_samples == 0) {
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vgmstream->num_samples = switch_opus_get_samples(start_offset, data_size, streamFile) - skip;
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}
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}
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#else
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goto fail;
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#endif
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/* open the file for reading */
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if (!vgmstream_open_stream(vgmstream, streamFile, 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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