47 lines
1.3 KiB
C
47 lines
1.3 KiB
C
#include "meta.h"
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#include "../coding/coding.h"
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/* .ESF - from Mortal Kombat 4 (PC) */
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VGMSTREAM* init_vgmstream_esf(STREAMFILE* sf) {
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VGMSTREAM* vgmstream = NULL;
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uint32_t pcm_size;
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off_t start_offset;
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int loop_flag, bps_flag, hq_flag, channels, bps;
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/* checks */
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if (!is_id32be(0x00, sf, "ESF\x06"))
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goto fail;
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if (!check_extensions(sf, "esf"))
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goto fail;
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pcm_size = read_u32le(0x04, sf);
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bps_flag = pcm_size & 0x20000000;
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hq_flag = pcm_size & 0x40000000;
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loop_flag = pcm_size & 0x80000000;
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pcm_size &= 0x1FFFFFFF;
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channels = 1; /* mono only */
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start_offset = 0x08;
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bps = bps_flag ? 16 : 8; /* 16 is supposed to mean PCM16 but is actually IMA */
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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_ESF;
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vgmstream->sample_rate = hq_flag ? 22050 : 11025;
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vgmstream->coding_type = (bps == 8) ? coding_PCM8_U : coding_DVI_IMA;
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vgmstream->num_samples = pcm_bytes_to_samples(pcm_size, 1, bps);
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vgmstream->loop_start_sample = 0;
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vgmstream->loop_end_sample = vgmstream->num_samples;
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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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