mirror of
https://github.com/vgmstream/vgmstream.git
synced 2024-12-19 18:05:52 +01:00
100 lines
3.1 KiB
C
100 lines
3.1 KiB
C
#include "meta.h"
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#include "../coding/coding.h"
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/* HIS - Her Interactive games [Nancy Drew series (PC)] */
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VGMSTREAM * init_vgmstream_his(STREAMFILE *streamFile) {
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VGMSTREAM * vgmstream = NULL;
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int channel_count, loop_flag = 0, bps, sample_rate, num_samples, version;
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off_t start_offset;
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/* checks */
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if (!check_extensions(streamFile, "his"))
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goto fail;
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if (read_32bitBE(0x00,streamFile) == 0x48657220) { /* "Her Interactive Sound\x1a" */
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/* Nancy Drew: Secrets Can Kill (PC) */
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version = 0;
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channel_count = read_16bitLE(0x16,streamFile);
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sample_rate = read_32bitLE(0x18,streamFile);
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/* 0x1c: bitrate */
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/* 0x20: block size */
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bps = read_16bitLE(0x22,streamFile);
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if (read_32bitBE(0x24,streamFile) != 0x64617461) /* "data" */
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goto fail;
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num_samples = pcm_bytes_to_samples(read_32bitLE(0x28,streamFile), channel_count, bps);
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start_offset = 0x2c;
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}
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else if (read_32bitBE(0x00,streamFile) == 0x48495300) { /* HIS\0 */
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/* most(?) others */
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version = read_32bitLE(0x04,streamFile);
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/* 0x08: codec */
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channel_count = read_16bitLE(0x0a,streamFile);
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sample_rate = read_32bitLE(0x0c,streamFile);
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/* 0x10: bitrate */
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/* 0x14: block size */
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bps = read_16bitLE(0x16,streamFile);
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num_samples = pcm_bytes_to_samples(read_32bitLE(0x18,streamFile), channel_count, bps); /* true even for Ogg */
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/* later games use "OggS" */
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if (version == 1)
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start_offset = 0x1c; /* Nancy Drew: The Final Scene (PC) */
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else if (version == 2 && read_32bitBE(0x1e,streamFile) == 0x4F676753)
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start_offset = 0x1e; /* Nancy Drew: The Haunted Carousel (PC) */
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else if (version == 2 && read_32bitBE(0x20,streamFile) == 0x4F676753)
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start_offset = 0x20; /* Nancy Drew: The Silent Spy (PC) */
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else
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goto fail;
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}
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else {
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goto fail;
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}
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if (version == 2) {
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#ifdef VGM_USE_VORBIS
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ogg_vorbis_meta_info_t ovmi = {0};
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ovmi.meta_type = meta_HIS;
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return init_vgmstream_ogg_vorbis_callbacks(streamFile, NULL, start_offset, &ovmi);
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#else
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goto fail;
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#endif
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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_HIS;
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vgmstream->sample_rate = sample_rate;
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vgmstream->num_samples = num_samples;
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switch (bps) {
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case 8:
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vgmstream->coding_type = coding_PCM8_U;
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vgmstream->layout_type = layout_interleave;
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vgmstream->interleave_block_size = 0x01;
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break;
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case 16:
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vgmstream->coding_type = coding_PCM16LE;
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vgmstream->layout_type = layout_interleave;
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vgmstream->interleave_block_size = 0x02;
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break;
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default:
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goto fail;
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}
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if (!vgmstream_open_stream(vgmstream,streamFile,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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