95 lines
2.5 KiB
C
95 lines
2.5 KiB
C
#include "meta.h"
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#include "../coding/coding.h"
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/* .AUDIO_DATA - Traveller's Tales "NTT" engine audio format [Lego Star Wars: The Skywalker Saga (PC/Switch)] */
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VGMSTREAM* init_vgmstream_tt_ad(STREAMFILE* sf) {
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VGMSTREAM* vgmstream = NULL;
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uint32_t offset, stream_offset, stream_size;
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int loop_flag, channels, sample_rate, codec, frame_size = 0;
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int32_t num_samples;
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/* checks */
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if (!is_id32be(0x00,sf, "FMT "))
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goto fail;
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/* actual extension */
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if (!check_extensions(sf, "audio_data"))
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goto fail;
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offset = 0x08;
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/* 0x00: null */
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codec = read_u16le(offset + 0x02,sf);
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sample_rate = read_s32le(offset + 0x04,sf);
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num_samples = read_s32le(offset + 0x08,sf);
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channels = read_u8(offset + 0x0c,sf);
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/* 0x0d: bps (16=IMA, 32=Ogg) */
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/* 0x10:
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Ogg = some size?
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IMA = frame size + flag? */
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if (codec == 0x0a)
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frame_size = read_u16le(offset + 0x10,sf);
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loop_flag = 0; /* music just repeats? */
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offset += read_u32le(0x04, sf);
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/* Ogg seek table*/
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if (is_id32be(offset, sf, "SEEK")) {
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offset += 0x08 + read_u32le(offset + 0x04, sf);
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}
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/* found with some IMA */
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if (is_id32be(offset, sf, "RMS ")) {
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offset += 0x08 + read_u32le(offset + 0x04, sf);
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}
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if (!is_id32be(offset, sf, "DATA"))
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goto fail;
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stream_offset = offset + 0x08;
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stream_size = read_u32le(offset + 0x04, sf);
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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_TT_AD;
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vgmstream->sample_rate = sample_rate;
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vgmstream->num_samples = num_samples;
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switch(codec) {
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#ifdef VGM_USE_VORBIS
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case 0x01: {
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vgmstream->codec_data = init_ogg_vorbis(sf, stream_offset, stream_size, NULL);
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if (!vgmstream->codec_data) goto fail;
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vgmstream->coding_type = coding_OGG_VORBIS;
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vgmstream->layout_type = layout_none;
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break;
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}
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#endif
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case 0x0a:
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vgmstream->coding_type = coding_MS_IMA_mono;
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vgmstream->layout_type = layout_blocked_tt_ad;
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vgmstream->frame_size = frame_size;
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vgmstream->interleave_block_size = frame_size;
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break;
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default:
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vgm_logi("FMT: unsupported codec 0x%x\n", codec);
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goto fail;
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}
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if (!vgmstream_open_stream(vgmstream, sf, stream_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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