mirror of
https://github.com/vgmstream/vgmstream.git
synced 2024-12-19 18:05:52 +01:00
65 lines
1.7 KiB
C
65 lines
1.7 KiB
C
#include "meta.h"
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#include "../coding/coding.h"
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/* XOPUS - from Exient games [Angry Birds: Transformers (Android), Angry Birds: Go (Android)] */
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VGMSTREAM* init_vgmstream_xopus(STREAMFILE* sf) {
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VGMSTREAM* vgmstream = NULL;
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off_t start_offset, table_offset;
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int loop_flag = 0, channels, sample_rate, num_samples, skip;
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size_t data_size;
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int entries;
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/* checks*/
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if (!check_extensions(sf, "xopus"))
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goto fail;
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if (read_u32be(0x00, sf) != 0x584F7075) /* "XOpu" */
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goto fail;
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/* 0x04: always 0x01? */
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channels = read_u8(0x05, sf);
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/* 0x06: always 0x30? */
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/* 0x08: always 0xc8? max allowed packet size? */
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num_samples = read_s32le(0x0c, sf);
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skip = read_s32le(0x10, sf);
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entries = read_u32le(0x14, sf);
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data_size = read_u32le(0x18, sf);
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/* 0x1c: unused */
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/* 0x20+: packet sizes table */
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sample_rate = 48000;
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loop_flag = 0;
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table_offset = 0x20;
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start_offset = table_offset + 0x02*entries;
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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_XOPUS;
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vgmstream->sample_rate = sample_rate;
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vgmstream->num_samples = num_samples;
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#ifdef VGM_USE_FFMPEG
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{
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vgmstream->codec_data = init_ffmpeg_x_opus(sf, table_offset, entries, start_offset, data_size, vgmstream->channels, skip);
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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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}
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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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