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https://github.com/vgmstream/vgmstream.git
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116 lines
3.3 KiB
C
116 lines
3.3 KiB
C
#include "meta.h"
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#include "../util/endianness.h"
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#define EAAC_BLOCKID1_HEADER 0x48 /* 'H' */
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/* EA SBR/SBS - used in older 7th gen games for storing SFX */
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VGMSTREAM* init_vgmstream_ea_sbr(STREAMFILE* sf) {
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VGMSTREAM* vgmstream = NULL;
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STREAMFILE *sf_sbs = NULL;
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uint32_t num_sounds, sound_id, type_desc, num_items, item_type,
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table_offset, types_offset, entry_offset, items_offset, data_offset, snr_offset, sns_offset;
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int target_stream = sf->stream_index;
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eaac_meta_t info = {0};
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/* checks */
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if (!is_id32be(0x00, sf, "SBKR"))
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return NULL;
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if (!check_extensions(sf, "sbr"))
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return NULL;
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/* SBR files are always big endian */
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num_sounds = read_u32be(0x1c, sf);
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table_offset = read_u32be(0x24, sf);
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types_offset = read_u32be(0x28, sf);
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if (target_stream == 0) target_stream = 1;
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if (target_stream < 0 || num_sounds == 0 || target_stream > num_sounds)
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goto fail;
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entry_offset = table_offset + 0x0a * (target_stream - 1);
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sound_id = read_u32be(entry_offset + 0x00, sf);
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num_items = read_u16be(entry_offset + 0x04, sf);
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items_offset = read_u32be(entry_offset + 0x06, sf);
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snr_offset = 0;
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sns_offset = 0;
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for (uint32_t i = 0; i < num_items; i++) {
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entry_offset = items_offset + 0x06 * i;
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item_type = read_u16be(entry_offset + 0x00, sf);
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data_offset = read_u32be(entry_offset + 0x02, sf);
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type_desc = read_u32be(types_offset + 0x06 * item_type, sf);
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switch (type_desc) {
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case 0x534E5231: /* "SNR1" */
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snr_offset = data_offset;
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break;
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case 0x534E5331: /* "SNS1" */
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sns_offset = read_u32be(data_offset, sf);
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break;
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default:
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break;
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}
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}
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if (snr_offset == 0 && sns_offset == 0)
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goto fail;
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if (sns_offset == 0) {
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/* RAM asset */
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info.sf_head = sf;
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info.head_offset = snr_offset;
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info.body_offset = 0x00;
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info.type = (read_u8(snr_offset, sf) == EAAC_BLOCKID1_HEADER) ? meta_EA_SPS : meta_EA_SNR_SNS;;
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vgmstream = load_vgmstream_ea_eaac(&info);
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if (!vgmstream) goto fail;
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}
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else {
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/* streamed asset */
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sf_sbs = open_streamfile_by_ext(sf, "sbs");
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if (!sf_sbs) goto fail;
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if (!is_id32be(0x00, sf_sbs, "SBKS"))
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goto fail;
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if (read_u8(sns_offset, sf_sbs) == EAAC_BLOCKID1_HEADER) {
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/* SPS */
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info.sf_head = sf_sbs;
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info.head_offset = sns_offset;
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info.body_offset = 0x00;
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info.type = meta_EA_SPS;
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vgmstream = load_vgmstream_ea_eaac(&info);
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if (!vgmstream) goto fail;
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}
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else {
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/* SNR/SNS */
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if (snr_offset == 0)
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goto fail;
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info.sf_head = sf;
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info.sf_body = sf_sbs;
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info.head_offset = snr_offset;
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info.body_offset = sns_offset;
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info.type = meta_EA_SNR_SNS;
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vgmstream = load_vgmstream_ea_eaac(&info);
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if (!vgmstream) goto fail;
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}
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}
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snprintf(vgmstream->stream_name, STREAM_NAME_SIZE, "%08x", sound_id);
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vgmstream->num_streams = num_sounds;
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close_streamfile(sf_sbs);
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return vgmstream;
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fail:
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close_streamfile(sf_sbs);
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return NULL;
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}
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