mirror of
https://github.com/vgmstream/vgmstream.git
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Add/fix Falcom RIFF (.dec/de2) + looping [Xanadu Next, Gurumin (PC)]
This commit is contained in:
bnnm
parent
6d80168879
commit
162ec1fb9c
@ -93,6 +93,7 @@ static const char* extension_list[] = {
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"dcs",
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"ddsp",
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"de2",
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"dec",
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"dmsg",
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"dsp",
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"dspw",
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@ -1,18 +1,21 @@
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#include "layout.h"
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#include "../vgmstream.h"
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/* set up for the block at the given offset */
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/* Falcom RIFF blocks (.DEC/DE2) */
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void de2_block_update(off_t block_offset, VGMSTREAM * vgmstream) {
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STREAMFILE* streamFile = vgmstream->ch[0].streamfile;
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size_t block_size, header_size;
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int i;
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vgmstream->current_block_offset = block_offset;
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vgmstream->current_block_size = read_32bitLE(
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vgmstream->current_block_offset,
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vgmstream->ch[0].streamfile);
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vgmstream->next_block_offset = block_offset+8+read_32bitLE(
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vgmstream->current_block_offset,
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vgmstream->ch[0].streamfile);
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for (i=0;i<vgmstream->channels;i++) {
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vgmstream->ch[i].offset = vgmstream->current_block_offset + 8;
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header_size = 0x08;
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block_size = read_32bitLE(block_offset,streamFile);
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/* 0x04: PCM size? */
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vgmstream->current_block_offset = block_offset;
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vgmstream->current_block_size = block_size;
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vgmstream->next_block_offset = block_offset + block_size + header_size;
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/* MSADPCM = same offset per channel */
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for (i = 0; i < vgmstream->channels; i++) {
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vgmstream->ch[i].offset = vgmstream->current_block_offset + header_size;
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}
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}
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216
src/meta/de2.c
216
src/meta/de2.c
@ -1,101 +1,183 @@
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#include "meta.h"
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#include "../layout/layout.h"
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#include "../util.h"
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/* Gurumin .de2 */
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/* A ways into the file we have a fake RIFF header wrapping MS ADPCM */
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#define TXT_LINE_MAX 0x1000
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static int get_falcom_looping(STREAMFILE *streamFile, int *out_loop_start, int *out_loop_end);
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/* .DEC/DE2 - from Falcom PC games (Xanadu Next, Zwei!!, VM Japan, Gurumin) */
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VGMSTREAM * init_vgmstream_de2(STREAMFILE *streamFile) {
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VGMSTREAM * vgmstream = NULL;
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char filename[PATH_LIMIT];
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off_t riff_off;
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int channel_count;
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int sample_count;
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int sample_rate;
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off_t start_offset;
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off_t riff_off = 0x00;
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size_t pcm_size = 0;
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int loop_flag, channel_count, sample_rate, loop_start = 0, loop_end = 0;
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int loop_flag = 0;
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uint32_t data_size;
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/* check extension, case insensitive */
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streamFile->get_name(streamFile,filename,sizeof(filename));
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if (strcasecmp("de2",filename_extension(filename))) goto fail;
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/* still not sure what this is for, but consistently 0xb */
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if (read_32bitLE(0x04,streamFile)!=0xb) goto fail;
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/* legitimate! really! */
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riff_off = 0x10 +
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(read_32bitLE(0x0c,streamFile) ^ read_32bitLE(0x04,streamFile));
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/* check header */
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if ((uint32_t)read_32bitBE(riff_off+0,streamFile)!=0x52494646) /* "RIFF" */
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/* check extension (.dec: main, .de2: Gurumin) */
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if ( !check_extensions(streamFile,"dec,de2") )
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goto fail;
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/* check for WAVE form */
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if ((uint32_t)read_32bitBE(riff_off+8,streamFile)!=0x57415645) /* "WAVE" */
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/* Gurumin has extra data, maybe related to rhythm (~0x50000) */
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if (check_extensions(streamFile,"de2")) {
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/* still not sure what this is for, but consistently 0xb */
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if (read_32bitLE(0x04,streamFile) != 0xb) goto fail;
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/* legitimate! really! */
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riff_off = 0x10 + (read_32bitLE(0x0c,streamFile) ^ read_32bitLE(0x04,streamFile));
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}
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/* fake PCM RIFF header (the original WAV's) wrapping MS-ADPCM */
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if (read_32bitBE(riff_off+0x00,streamFile) != 0x52494646 || /* "RIFF" */
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read_32bitBE(riff_off+0x08,streamFile) != 0x57415645) /* "WAVE" */
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goto fail;
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/* check for "fmt " */
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if ((uint32_t)read_32bitBE(riff_off+12,streamFile)!=0x666d7420) /* "fmt " */
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if (read_32bitBE(riff_off+0x0c,streamFile) == 0x50414420) { /* "PAD " (Zwei!!), blank with wrong chunk size */
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sample_rate = 44100;
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channel_count = 2;
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pcm_size = read_32bitLE(riff_off+0x04,streamFile) - 0x24;
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/* somehow there is garbage at the beginning of some tracks */
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}
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else if (read_32bitBE(riff_off+0x0c,streamFile) == 0x666D7420) { /* "fmt " (rest) */
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//if (read_32bitLE(riff_off+0x10,streamFile) != 0x12) goto fail; /* 0x10 in some */
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if (read_16bitLE(riff_off+0x14,streamFile) != 0x01) goto fail; /* PCM (actually MS-ADPCM) */
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if (read_16bitLE(riff_off+0x20,streamFile) != 4 ||
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read_16bitLE(riff_off+0x22,streamFile) != 16) goto fail; /* 16-bit */
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channel_count = read_16bitLE(riff_off+0x16,streamFile);
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sample_rate = read_32bitLE(riff_off+0x18,streamFile);
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if (read_32bitBE(riff_off+0x24,streamFile) == 0x64617461) { /* "data" size except in some Zwei!! */
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pcm_size = read_32bitLE(riff_off+0x28,streamFile);
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} else {
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pcm_size = read_32bitLE(riff_off+0x04,streamFile) - 0x24;
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}
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}
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else {
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goto fail;
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/* check for "data" */
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if ((uint32_t)read_32bitBE(riff_off+0x24,streamFile)!=0x64617461) /* "data" */
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}
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if (channel_count != 2)
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goto fail;
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/* check for bad fmt chunk size */
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if (read_32bitLE(riff_off+0x10,streamFile)!=0x12) goto fail;
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sample_rate = read_32bitLE(riff_off+0x18,streamFile);
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channel_count = read_16bitLE(riff_off+0x16,streamFile);
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if (channel_count != 2) goto fail;
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/* PCM */
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if (read_16bitLE(riff_off+0x14,streamFile) != 1) goto fail;
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/* 16-bit */
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if (read_16bitLE(riff_off+0x20,streamFile) != 4 ||
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read_16bitLE(riff_off+0x22,streamFile) != 16) goto fail;
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start_offset = riff_off + 0x2c;
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data_size = read_32bitLE(riff_off+0x28,streamFile);
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loop_flag = get_falcom_looping(streamFile, &loop_start, &loop_end);
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sample_count = data_size/2/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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/* fill in the vital statistics */
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vgmstream->num_samples = sample_count;
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vgmstream->sample_rate = sample_rate;
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vgmstream->num_samples = pcm_size / 2 / channel_count;
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vgmstream->loop_start_sample = loop_start;
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vgmstream->loop_end_sample = loop_end;
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vgmstream->coding_type = coding_MSADPCM;
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vgmstream->layout_type = layout_de2_blocked;
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vgmstream->interleave_block_size = 0x800;
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vgmstream->layout_type = layout_de2_blocked;
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vgmstream->meta_type = meta_DE2;
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vgmstream->meta_type = meta_DE2;//todo
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/* open the file, set up each channel */
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{
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int i;
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/* open the file for reading */
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if ( !vgmstream_open_stream(vgmstream, streamFile, start_offset) )
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goto fail;
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vgmstream->ch[0].streamfile = streamFile->open(streamFile,filename,
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STREAMFILE_DEFAULT_BUFFER_SIZE);
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if (!vgmstream->ch[0].streamfile) goto fail;
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for (i=0;i<channel_count;i++) {
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vgmstream->ch[i].streamfile = vgmstream->ch[0].streamfile;
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}
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}
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/* start me up */
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de2_block_update(start_offset,vgmstream);
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de2_block_update(start_offset, vgmstream);
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return vgmstream;
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/* clean up anything we may have opened */
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fail:
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if (vgmstream) close_vgmstream(vgmstream);
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close_vgmstream(vgmstream);
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return NULL;
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}
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/* Falcom loves loop points in external text files, here we parse them */
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typedef enum { XANADU_NEXT, ZWEI, DINOSAUR_RESURRECTION, GURUMIN } falcom_loop_t;
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static int get_falcom_looping(STREAMFILE *streamFile, int *out_loop_start, int *out_loop_end) {
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STREAMFILE *streamText;
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off_t txt_offset = 0x00;
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falcom_loop_t type;
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int loop_start = 0, loop_end = 0, loop_flag = 0;
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char filename[TXT_LINE_MAX];
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/* try one of the many loop files */
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if ((streamText = open_stream_name(streamFile,"bgm.tbl")) != NULL) {
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type = XANADU_NEXT;
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}
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else if ((streamText = open_stream_name(streamFile,"bgm.scr")) != NULL) {
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type = ZWEI;
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}
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else if ((streamText = open_stream_name(streamFile,"loop.txt")) != NULL) { /* actual name in Shift JIS, 0x838B815B8376 */
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type = DINOSAUR_RESURRECTION;
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}
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else if ((streamText = open_stream_name(streamFile,"map.itm")) != NULL) {
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type = GURUMIN;
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}
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else {
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goto end;
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}
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get_streamfile_name(streamFile,filename,TXT_LINE_MAX);
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/* read line by line */
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while (txt_offset < get_streamfile_size(streamText)) {
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char line[TXT_LINE_MAX];
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char name[TXT_LINE_MAX];
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int ok, line_done, loop, bytes_read;
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bytes_read = get_streamfile_dos_line(TXT_LINE_MAX,line, txt_offset,streamText, &line_done);
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if (!line_done) goto end;
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txt_offset += bytes_read;
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if (line[0]=='/' || line[0]=='#' || line[0]=='[' || line[0]=='\0') /* comment/empty */
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continue;
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/* each game changes line format, wee */
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switch(type) {
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case XANADU_NEXT: /* "XANA000", 0, 0,99999990,0 */
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ok = sscanf(line,"\"%[^\"]\", %*d, %d, %d, %d", name,&loop_start,&loop_end,&loop);
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if (ok == 4 && strncasecmp(filename,name,strlen(name)) == 0) {
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loop_flag = (loop && loop_end != 0);
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goto end;
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}
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break;
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case ZWEI: /* 1,.\wav\bgm01.wav,497010,7386720;//comment */
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ok = sscanf(line,"%*i,.\\wav\\%[^.].dec,%d,%d;%*s", name,&loop_start,&loop_end);
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if (ok == 3 && strncasecmp(filename,name,strlen(name)) == 0) {
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loop_flag = (loop_end != 9000000);
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goto end;
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}
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break;
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case DINOSAUR_RESURRECTION: /* 01 970809 - 8015852 */
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strcpy(name,"dinow_"); /* for easier comparison */
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ok = sscanf(line,"%[^ ] %d - %d", (name+6), &loop_start,&loop_end);
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if (ok == 3 && strncasecmp(filename,name,strlen(name)) == 0) {
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loop_flag = 1;
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goto end;
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}
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break;
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case GURUMIN: /* 0003 BGM03 dec 00211049 02479133 00022050 00000084 //comment */
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ok = sscanf(line,"%*i %[^ \t] %*[^ \t] %d %d %*d %*d %*s", name,&loop_start,&loop_end);
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if (ok == 3 && strncasecmp(filename,name,strlen(name)) == 0) {
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loop_flag = (loop_end != 99999999 && loop_end != 10000000);
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goto end;
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}
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break;
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}
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}
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end:
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if (loop_flag) {
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*out_loop_start = loop_start;
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*out_loop_end = loop_end;
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}
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if (streamText) close_streamfile(streamText);
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return loop_flag;
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}
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