mirror of
https://github.com/vgmstream/vgmstream.git
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97 lines
3.1 KiB
C
97 lines
3.1 KiB
C
#include "meta.h"
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#include "../coding/coding.h"
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/* FDA - from Relic Entertainment games [Warhammer 4000: Dawn of War (PC)] */
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VGMSTREAM * init_vgmstream_fda(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, bitrate, sample_rate, num_samples;
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/* checks */
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if (!check_extensions(sf, "fda"))
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goto fail;
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if (read_u32be(0x00, sf) != 0x52656C69 || /* "Reli" */
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read_u32be(0x04, sf) != 0x63204368 || /* "c Ch" */
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read_u32be(0x08, sf) != 0x756E6B79 || /* "unky" */
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read_u32be(0x0c, sf) != 0x0D0A1A00) /* "\r\n\1a\00"*/
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goto fail;
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/* version? (later .fda change this) */
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if (read_u32le(0x10, sf) != 1 ||
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read_u32le(0x14, sf) != 1)
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goto fail;
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/* read chunks (abridged) */
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{
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off_t offset = 0x18;
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size_t chunk_size, name_size, data_size;
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/* Relic Chunkys have: type, subtype, version, data size, name size, then
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* name (optional) and data. But format has fixed chunks so we'll simplify a bit. */
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/* DATA-FBIF (file info) */
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chunk_size = read_u32le(offset + 0x0c, sf);
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name_size = read_u32le(offset + 0x10, sf);
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offset += 0x14 + name_size + chunk_size;
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/* FOLD-FDA (folder of chunks) */
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if (read_u32be(offset + 0x04, sf) != 0x46444120) /* "FDA " */
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goto fail;
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offset += 0x14;
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/* DATA-INFO (header) */
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if (read_u32be(offset + 0x04, sf) != 0x494E464F) /* "INFO" */
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goto fail;
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chunk_size = read_u32le(offset + 0x0c, sf);
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name_size = read_u32le(offset + 0x10, sf);
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offset += 0x14 + name_size;
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channel_count = read_s32le(offset + 0x00, sf);
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/* 0x04: bps */
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bitrate = read_s32le(offset + 0x08, sf);
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sample_rate = read_s32le(offset + 0x0c, sf);
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/* 0x10: loop start? (always 0) */
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/* 0x14: loop end? (always -1) */
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/* 0x18: loop offset? (always 0) */
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loop_flag = 0; /* never set? */
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offset += chunk_size;
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/* DATA-DATA (data) */
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if (read_u32be(offset + 0x04, sf) != 0x44415441) /* "DATA" */
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goto fail;
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chunk_size = read_u32le(offset + 0x0c, sf);
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name_size = read_u32le(offset + 0x10, sf);
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offset += 0x14 + name_size;
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data_size = read_s32le(offset + 0x00, sf);
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start_offset = offset + 0x04;
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num_samples = data_size / channel_count / (bitrate / 8) * 512;
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}
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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_FDA;
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vgmstream->sample_rate = 44100; /* fixed output */
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vgmstream->num_samples = num_samples;
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vgmstream->codec_data = init_relic(channel_count, bitrate, sample_rate);
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if (!vgmstream->codec_data) goto fail;
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vgmstream->coding_type = coding_RELIC;
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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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