111 lines
3.8 KiB
C
111 lines
3.8 KiB
C
#include "meta.h"
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#include "../coding/coding.h"
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/* RFTM - Retro Studios format [Donkey Kong Country Tropical Freeze (WiiU/Switch)] */
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VGMSTREAM *init_vgmstream_rfrm(STREAMFILE *streamFile) {
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VGMSTREAM *vgmstream = NULL;
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off_t fmta_offset = 0, data_offset = 0, header_offset, start_offset;
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size_t data_size = 0, interleave;
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int loop_flag, channel_count, version;
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int big_endian;
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int32_t (*read_32bit)(off_t,STREAMFILE*) = NULL;
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int16_t (*read_16bit)(off_t,STREAMFILE*) = NULL;
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/* checks */
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if (!check_extensions(streamFile, "csmp"))
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goto fail;
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if (read_32bitBE(0x00, streamFile) != 0x5246524D) /* "RFRM" */
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goto fail;
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/* 0x08: file size but not exact */
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if (read_32bitBE(0x14, streamFile) != 0x43534D50) /* "CSMP" */
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goto fail;
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version = read_32bitBE(0x18,streamFile); /* assumed, also at 0x1c */
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if (version == 0x0a) { /* Wii U */
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read_32bit = read_32bitBE;
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read_16bit = read_16bitBE;
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big_endian = 1;
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}
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else if (version == 0x12) { /* Switch */
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read_32bit = read_32bitLE;
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read_16bit = read_16bitLE;
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big_endian = 0;
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}
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else {
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goto fail;
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}
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/* parse chunks (always BE) */
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{
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off_t chunk_offset = 0x20;
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off_t file_size = get_streamfile_size(streamFile);
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while (chunk_offset < file_size) {
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uint32_t chunk_type = read_32bitBE(chunk_offset+0x00,streamFile);
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size_t chunk_size = read_32bitBE(chunk_offset+0x08,streamFile); /* maybe 64b from 0x04? */
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switch(chunk_type) {
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case 0x464D5441: /* "FMTA" */
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fmta_offset = chunk_offset + 0x18;
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break;
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case 0x44415441: /* "DATA" */
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data_offset = chunk_offset + 0x18;
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data_size = chunk_size;
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break;
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default: /* known: "LABL" (usually before "FMTA"), "META" (usually after "DATA") */
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break;
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}
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chunk_offset += 0x18 + chunk_size;
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}
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if (!fmta_offset || !data_offset || !data_size)
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goto fail;
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}
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/* parse FMTA / DATA (fully interleaved standard DSPs) */
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channel_count = read_8bit(fmta_offset+0x00, streamFile);
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/* FMTA 0x08: channel mapping */
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header_offset = data_offset;
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if (version == 0x0a) {
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size_t align = 0x03; /* possibly 32b align */
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header_offset += align;
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data_size -= align;
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}
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start_offset = header_offset + 0x60;
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loop_flag = read_16bit(header_offset + 0x0C, streamFile);
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interleave = data_size / channel_count;
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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_RFRM;
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vgmstream->sample_rate = read_32bit(header_offset + 0x08, streamFile);
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vgmstream->num_samples = read_32bit(header_offset + 0x00, streamFile);
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vgmstream->loop_start_sample = dsp_nibbles_to_samples(read_32bit(header_offset + 0x10, streamFile));
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vgmstream->loop_end_sample = dsp_nibbles_to_samples(read_32bit(header_offset + 0x14, streamFile)) + 1;
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if (vgmstream->loop_end_sample > vgmstream->num_samples) /* ? */
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vgmstream->loop_end_sample = vgmstream->num_samples;
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vgmstream->coding_type = coding_NGC_DSP;
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vgmstream->layout_type = layout_interleave;
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vgmstream->interleave_block_size = interleave;
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dsp_read_coefs(vgmstream, streamFile, header_offset + 0x1C, interleave, big_endian);
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dsp_read_hist (vgmstream, streamFile, header_offset + 0x40, interleave, big_endian);
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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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