mirror of
https://github.com/vgmstream/vgmstream.git
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111 lines
4.0 KiB
C
111 lines
4.0 KiB
C
#include "meta.h"
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#include "../coding/coding.h"
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/* SPD+SPT - Nintendo bank (bgm or sfx) format [Bloodrayne (GC), 4x4 EVO 2 (GC), Table Tennis (Wii)] */
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VGMSTREAM * init_vgmstream_spt_spd(STREAMFILE *streamFile) {
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VGMSTREAM *vgmstream = NULL;
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STREAMFILE *sf_h = NULL;
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int channel_count, loop_flag, sample_rate;
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off_t header_offset, extra_offset, start_offset;
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int32_t loop_start, loop_end, stream_start, stream_end;
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size_t stream_size;
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uint32_t flags;
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int total_subsongs, target_subsong = streamFile->stream_index;
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/* checks */
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if (!check_extensions(streamFile, "spd"))
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goto fail;
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sf_h = open_streamfile_by_ext(streamFile, "spt");
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if (!sf_h) goto fail;
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/* ignore alt .spt+spd [Spyro: Enter the Dragonfly (GC)] */
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if (read_u16be(0x00, sf_h) != 0) /* always 0xA20C? */
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goto fail;
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total_subsongs = read_s32be(0x00, sf_h);
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if (target_subsong == 0) target_subsong = 1;
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if (target_subsong < 0 || target_subsong > total_subsongs || total_subsongs < 1) goto fail;
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header_offset = 0x04 + 0x1c * (target_subsong-1);
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extra_offset = 0x04 + 0x1c * total_subsongs + 0x2e * (target_subsong-1);
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flags = read_u32be(header_offset + 0x00, sf_h);
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sample_rate = read_s32be(header_offset + 0x04, sf_h);
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loop_start = read_s32be(header_offset + 0x08, sf_h);
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loop_end = read_s32be(header_offset + 0x0c, sf_h);
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stream_end = read_s32be(header_offset + 0x10, sf_h);
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stream_start = read_s32be(header_offset + 0x14, sf_h);
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/* 0x18: null */
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channel_count = 1;
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loop_flag = (flags & 1);
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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_SPT_SPD;
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vgmstream->allow_dual_stereo = 1;
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vgmstream->sample_rate = sample_rate;
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vgmstream->layout_type = layout_none;
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vgmstream->num_streams = total_subsongs;
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switch(flags & (~1)) { /* bitflags */
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case 0: /* common */
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/* values in file nibbles? */
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start_offset = (stream_start / 2 - 1);
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stream_size = (stream_end / 2 + 1) - (stream_start / 2 - 1);
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if (loop_flag) {
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loop_start = (loop_start / 2 - 1) - start_offset;
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loop_end = (loop_end / 2 + 1) - start_offset;
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}
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vgmstream->coding_type = coding_NGC_DSP;
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vgmstream->num_samples = dsp_bytes_to_samples(stream_size, channel_count);
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if (loop_flag) {
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vgmstream->loop_start_sample = dsp_bytes_to_samples(loop_start, channel_count);
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vgmstream->loop_end_sample = dsp_bytes_to_samples(loop_end, channel_count);
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}
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dsp_read_coefs_be(vgmstream, sf_h, extra_offset + 0x00, 0x00);
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dsp_read_hist_be (vgmstream, sf_h, extra_offset + 0x24, 0x00);
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break;
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case 2: /* rare [Monster Jam: Maximum Destruction (GC)] */
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/* values in samples? */
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start_offset = (stream_start * 2);
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stream_size = (stream_end * 2) - (stream_start * 2);
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if (loop_flag) {
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loop_start = (loop_start * 2) - start_offset;
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loop_end = (loop_end * 2) - start_offset;
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}
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vgmstream->coding_type = coding_PCM16BE;
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vgmstream->num_samples = pcm_bytes_to_samples(stream_size, channel_count, 16);
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if (loop_flag) {
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vgmstream->loop_start_sample = loop_start;
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vgmstream->loop_end_sample = loop_end;
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}
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break;
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case 4: /* supposedly PCM8 */
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default:
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goto fail;
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}
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vgmstream->stream_size = stream_size;
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if (!vgmstream_open_stream(vgmstream,streamFile,start_offset))
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goto fail;
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close_streamfile(sf_h);
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return vgmstream;
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fail:
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close_streamfile(sf_h);
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close_vgmstream(vgmstream);
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return NULL;
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}
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