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83 lines
2.4 KiB
C
83 lines
2.4 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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/* .SNR+SNS - from EA latest games (~2005-2010), v0 header */
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VGMSTREAM* init_vgmstream_ea_snr_sns(STREAMFILE* sf) {
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eaac_meta_t info = {0};
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/* checks */
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if (!check_extensions(sf,"snr"))
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return NULL;
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info.sf_head = sf;
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info.head_offset = 0x00;
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info.body_offset = 0x00;
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info.type = meta_EA_SNR_SNS;
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info.standalone = true;
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return load_vgmstream_ea_eaac(&info);
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}
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/* .SPS - from EA latest games (~2010~present), v1 header */
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VGMSTREAM* init_vgmstream_ea_sps(STREAMFILE* sf) {
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eaac_meta_t info = {0};
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/* checks */
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if (read_u8(0x00, sf) != EAAC_BLOCKID1_HEADER) /* validated later but fails faster */
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return NULL;
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if (!check_extensions(sf,"sps"))
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return NULL;
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info.sf_head = sf;
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info.head_offset = 0x00;
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info.type = meta_EA_SPS;
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info.standalone = true;
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return load_vgmstream_ea_eaac(&info);
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}
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/* .SNU - from EA Redwood Shores/Visceral games (Dead Space, Dante's Inferno, The Godfather 2), v0 header */
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VGMSTREAM* init_vgmstream_ea_snu(STREAMFILE* sf) {
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eaac_meta_t info = {0};
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read_u32_t read_u32 = NULL;
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/* checks */
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if (!check_extensions(sf,"snu"))
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return NULL;
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/* EA SNU header (BE/LE depending on platform) */
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/* 0x00(1): related to sample rate? (03=48000)
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* 0x01(1): flags/count? (when set has extra block data before start_offset)
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* 0x02(1): always 0?
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* 0x03(1): channels? (usually matches but rarely may be 0)
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* 0x04(4): some size, maybe >>2 ~= number of frames
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* 0x08(4): start offset
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* 0x0c(4): some sub-offset? (0x20, found when @0x01 is set) */
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/* use start offset as endianness flag */
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read_u32 = guess_read_u32(0x08,sf);
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uint32_t body_offset = read_u32(0x08,sf);
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uint8_t block_id = read_u8(body_offset, sf);
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if (block_id == EAAC_BLOCKID1_HEADER) {
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/* Dead Space 3 (PC) */
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info.sf_head = sf;
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info.head_offset = body_offset; /* header also at 0x10, but useless in SPS */
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info.type = meta_EA_SNU;
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info.is_sps = true;
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}
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else {
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info.sf_head = sf;
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info.sf_body = sf;
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info.head_offset = 0x10; /* SNR header */
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info.body_offset = body_offset; /* SNR body */
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info.type = meta_EA_SNU;
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}
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return load_vgmstream_ea_eaac(&info);
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}
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