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gzdoom-gles/libraries/zmusic/streamsources/music_dumb.cpp

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/*
** music_dumb.cpp
** Alternative module player, using a modified DUMB for decoding.
** Based on the Foobar2000 component foo_dumb, version 0.9.8.4.
**
**---------------------------------------------------------------------------
** Copyright 2008 Randy Heit
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
**
** 1. Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** 3. The name of the author may not be used to endorse or promote products
** derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**---------------------------------------------------------------------------
**
*/
// HEADER FILES ------------------------------------------------------------
#include <math.h>
#include <mutex>
#include <string>
#include <stdint.h>
#include "streamsource.h"
#undef CDECL // w32api's windef.h defines this
#include "../dumb/include/dumb.h"
#include "../dumb/include/internal/it.h"
#include "zmusic/m_swap.h"
#include "zmusic/mididefs.h"
#include "zmusic/midiconfig.h"
#include "../../libraries/music_common/fileio.h"
// MACROS ------------------------------------------------------------------
// TYPES -------------------------------------------------------------------
DumbConfig dumbConfig;
class DumbSong : public StreamSource
{
public:
DumbSong(DUH *myduh, int samplerate);
~DumbSong();
//bool SetPosition(int ms);
bool SetSubsong(int subsong) override;
bool Start() override;
SoundStreamInfo GetFormat() override;
void ChangeSettingNum(const char* setting, double val) override;
std::string GetStats() override;
std::string Codec;
std::string TrackerVersion;
std::string FormatVersion;
int NumChannels;
int NumPatterns;
int NumOrders;
float MasterVolume;
protected:
int srate, interp, volramp;
int start_order;
double delta;
double length;
bool eof;
bool started = false;
size_t written;
DUH *duh;
DUH_SIGRENDERER *sr;
std::mutex crit_sec;
bool open2(long pos);
long render(double volume, double delta, long samples, sample_t **buffer);
int decode_run(void *buffer, unsigned int size);
bool GetData(void *buffer, size_t len) override;
};
#pragma pack(1)
#if defined(__GNUC__)
#define FORCE_PACKED __attribute__((__packed__))
#else
#define FORCE_PACKED
#endif
typedef struct tagITFILEHEADER
{
uint32_t id; // 0x4D504D49
char songname[26];
uint16_t reserved1; // 0x1004
uint16_t ordnum;
uint16_t insnum;
uint16_t smpnum;
uint16_t patnum;
uint16_t cwtv;
uint16_t cmwt;
uint16_t flags;
uint16_t special;
uint8_t globalvol;
uint8_t mv;
uint8_t speed;
uint8_t tempo;
uint8_t sep;
uint8_t zero;
uint16_t msglength;
uint32_t msgoffset;
uint32_t reserved2;
uint8_t chnpan[64];
uint8_t chnvol[64];
} FORCE_PACKED ITFILEHEADER, *PITFILEHEADER;
typedef struct MODMIDICFG
{
char szMidiGlb[9*32]; // changed from CHAR
char szMidiSFXExt[16*32]; // changed from CHAR
char szMidiZXXExt[128*32]; // changed from CHAR
} FORCE_PACKED MODMIDICFG, *LPMODMIDICFG;
#pragma pack()
// EXTERNAL FUNCTION PROTOTYPES --------------------------------------------
// PUBLIC FUNCTION PROTOTYPES ----------------------------------------------
// PRIVATE FUNCTION PROTOTYPES ---------------------------------------------
// EXTERNAL DATA DECLARATIONS ----------------------------------------------
// PUBLIC DATA DEFINITIONS -------------------------------------------------
// PRIVATE DATA DEFINITIONS ------------------------------------------------
// CODE --------------------------------------------------------------------
//==========================================================================
//
// ReadDUH
//
// Reads metadata from a generic module.
//
//==========================================================================
static void ReadDUH(DUH * duh, DumbSong *info, bool meta, bool dos)
{
if (!duh) return;
DUMB_IT_SIGDATA * itsd = duh_get_it_sigdata(duh);
if (!itsd) return;
info->NumChannels = itsd->n_pchannels;
info->NumPatterns = itsd->n_patterns;
info->NumOrders = itsd->n_orders;
if (meta)
{
if (itsd->name[0])
{
//if (dos) info.meta_add(field_title, string_utf8_from_oem((char*)&itsd->name, sizeof(itsd->name)));
//else info.meta_add(field_title, pfc::stringcvt::string_utf8_from_ansi((char *)&itsd->name, sizeof(itsd->name)));
}
if (itsd->song_message && *itsd->song_message)
{
//if (dos) info.meta_add(field_comment, string_utf8_from_oem_multiline((char*)itsd->song_message));
//else info.meta_add(field_comment, pfc::stringcvt::string_utf8_from_ansi((char *)itsd->song_message));
}
}
// std::string does not like nullptr assignments. Was this really necessary? :(
auto a = duh_get_tag(duh, "FORMAT");
if (a) info->Codec = a;
a = duh_get_tag(duh, "TRACKERVERSION");
if (a) info->TrackerVersion = a;
a = duh_get_tag(duh, "FORMATVERSION");
if (a) info->FormatVersion = a;
#if 0
std::string name;
if (itsd->n_samples)
{
int i, n;
//info.info_set_int(field_samples, itsd->n_samples);
if (meta && itsd->sample)
{
for (i = 0, n = itsd->n_samples; i < n; i++)
{
if (itsd->sample[i].name[0])
{
name = "smpl";
if (i < 10) name += '0';
name += '0' + i;
//if (dos) info.meta_add(name, string_utf8_from_oem((char*)&itsd->sample[i].name, sizeof(itsd->sample[i].name)));
//else info.meta_add(name, pfc::stringcvt::string_utf8_from_ansi((char *)&itsd->sample[i].name, sizeof(itsd->sample[i].name)));
}
}
}
}
if (itsd->n_instruments)
{
//info.info_set_int(field_instruments, itsd->n_instruments);
if (meta && itsd->instrument)
{
for (i = 0, n = itsd->n_instruments; i < n; i++)
{
if (itsd->instrument[i].name[0])
{
name = "inst";
if (i < 10) name += '0';
name += '0' + i;
//if (dos) info.meta_add(name, string_utf8_from_oem((char*)&itsd->instrument[i].name, sizeof(itsd->instrument[i].name)));
//else info.meta_add(name, pfc::stringcvt::string_utf8_from_ansi((char *)&itsd->instrument[i].name, sizeof(itsd->instrument[i].name)));
}
}
}
}
#endif
}
//==========================================================================
//
// ReadIT
//
// Reads metadata from an IT file.
//
//==========================================================================
static bool ReadIT(const uint8_t * ptr, unsigned size, DumbSong *info, bool meta)
{
PITFILEHEADER pifh = (PITFILEHEADER) ptr;
if ((!ptr) || (size < 0x100)) return false;
if ((LittleLong(pifh->id) != 0x4D504D49) ||
(LittleShort(pifh->insnum) >= 256) ||
(!pifh->smpnum) || (LittleShort(pifh->smpnum) > 4000) || // XXX
(!pifh->ordnum)) return false;
if (sizeof(ITFILEHEADER) + LittleShort(pifh->ordnum) +
LittleShort(pifh->insnum)*4 +
LittleShort(pifh->smpnum)*4 +
LittleShort(pifh->patnum)*4 > size) return false;
char ver[40];
snprintf(ver, 40, "IT v%u.%02x", LittleShort(pifh->cmwt) >> 8, LittleShort(pifh->cmwt) & 255);
info->Codec = ver;
snprintf(ver, 40, "%u.%02x", LittleShort(pifh->cwtv) >> 8, LittleShort(pifh->cwtv) & 255);
info->TrackerVersion = ver;
//if ( pifh->smpnum ) info.info_set_int( field_samples, LittleShort(pifh->smpnum) );
//if ( pifh->insnum ) info.info_set_int( field_instruments, LittleShort(pifh->insnum) );
//if ( meta && pifh->songname[0] ) info.meta_add( field_title, string_utf8_from_it( (char*)&pifh->songname, 26 ) );
unsigned n, l, m_nChannels = 0;
// bah, some file (jm-romance.it) with message length rounded up to a multiple of 256 (384 instead of 300)
unsigned msgoffset = LittleLong(pifh->msgoffset);
unsigned msgend = msgoffset + LittleShort(pifh->msglength);
uint32_t * offset;
// std::string name;
if (meta)
{
offset = (uint32_t *)(ptr + 0xC0 + LittleShort(pifh->ordnum) + LittleShort(pifh->insnum) * 4);
for (n = 0, l = LittleShort(pifh->smpnum); n < l; n++, offset++)
{
uint32_t offset_n = LittleLong( *offset );
if ( offset_n >= msgoffset && offset_n < msgend ) msgend = offset_n;
if ((!offset_n) || (offset_n + 0x14 + 26 + 2 >= size)) continue;
// XXX
if (ptr[offset_n] == 0 && ptr[offset_n + 1] == 0 &&
ptr[offset_n + 2] == 'I' && ptr[offset_n + 3] == 'M' &&
ptr[offset_n + 4] == 'P' && ptr[offset_n + 5] == 'S')
{
offset_n += 2;
}
#if 0
if (*(ptr + offset_n + 0x14))
{
name = "smpl";
if (n < 10) name << '0';
name << ('0' + n);
//info.meta_add(name, string_utf8_from_it((const char *) ptr + offset_n + 0x14, 26));
}
#endif
}
offset = (uint32_t *)(ptr + 0xC0 + LittleShort(pifh->ordnum));
for (n = 0, l = LittleShort(pifh->insnum); n < l; n++, offset++)
{
uint32_t offset_n = LittleLong( *offset );
if ( offset_n >= msgoffset && offset_n < msgend ) msgend = offset_n;
if ((!offset_n) || (offset_n + 0x20 + 26 >= size)) continue;
#if 0
if (*(ptr + offset_n + 0x20))
{
name = "inst";
if (n < 10) name << '0';
name << ('0' + n);
//info.meta_add(name, string_utf8_from_it((const char *) ptr + offset_n + 0x20, 26));
}
#endif
}
}
unsigned pos = 0xC0 + LittleShort(pifh->ordnum) + LittleShort(pifh->insnum) * 4 + LittleShort(pifh->smpnum) * 4 + LittleShort(pifh->patnum) * 4;
if (pos < size)
{
uint16_t val16 = LittleShort( *(uint16_t *)(ptr + pos) );
pos += 2;
if (pos + val16 * 8 < size) pos += val16 * 8;
}
if (LittleShort(pifh->flags) & 0x80)
{
if (pos + sizeof(MODMIDICFG) < size)
{
pos += sizeof(MODMIDICFG);
}
}
if ((pos + 8 < size) && (*(uint32_t *)(ptr + pos) == MAKE_ID('P','N','A','M')))
{
unsigned len = LittleLong(*(uint32_t *)(ptr + pos + 4));
pos += 8;
if ((pos + len <= size) && (len <= 240 * 32) && (len >= 32))
{
if (meta)
{
l = len / 32;
for (n = 0; n < l; n++)
{
#if 0
if (*(ptr + pos + n * 32))
{
name = "patt";
if (n < 10) name << '0';
name << ('0' + n);
//info.meta_add(name, string_utf8_from_it((const char *) ptr + pos + n * 32, 32));
}
#endif
}
}
pos += len;
}
}
if ((pos + 8 < size) && (*(uint32_t *)(ptr + pos) == MAKE_ID('C','N','A','M')))
{
unsigned len = LittleLong(*(uint32_t *)(ptr + pos + 4));
pos += 8;
if ((pos + len <= size) && (len <= 64 * 20) && (len >= 20))
{
l = len / 20;
m_nChannels = l;
if (meta)
{
for (n = 0; n < l; n++)
{
#if 0
if (*(ptr + pos + n * 20))
{
name = "chan";
if (n < 10) name << '0';
name << ('0' + n);
//info.meta_add(name, string_utf8_from_it((const char *) ptr + pos + n * 20, 20));
}
#endif
}
}
pos += len;
}
}
offset = (uint32_t *)(ptr + 0xC0 + LittleShort(pifh->ordnum) + LittleShort(pifh->insnum) * 4 + LittleShort(pifh->smpnum) * 4);
uint8_t chnmask[64];
for (n = 0, l = LittleShort(pifh->patnum); n < l; n++)
{
memset(chnmask, 0, sizeof(chnmask));
uint32_t offset_n = LittleLong( offset[n] );
if ((!offset_n) || (offset_n + 4 >= size)) continue;
unsigned len = LittleShort(*(uint16_t *)(ptr + offset_n));
unsigned rows = LittleShort(*(uint16_t *)(ptr + offset_n + 2));
if ((rows < 4) || (rows > 256)) continue;
if (offset_n + 8 + len > size) continue;
unsigned i = 0;
const uint8_t * p = ptr + offset_n + 8;
unsigned nrow = 0;
while (nrow < rows)
{
if (i >= len) break;
uint8_t b = p[i++];
if (!b)
{
nrow++;
continue;
}
unsigned ch = b & 0x7F;
if (ch) ch = (ch - 1) & 0x3F;
if (b & 0x80)
{
if (i >= len) break;
chnmask[ch] = p[i++];
}
// Channel used
if (chnmask[ch] & 0x0F)
{
if ((ch >= m_nChannels) && (ch < 64)) m_nChannels = ch+1;
}
// Note
if (chnmask[ch] & 1) i++;
// Instrument
if (chnmask[ch] & 2) i++;
// Volume
if (chnmask[ch] & 4) i++;
// Effect
if (chnmask[ch] & 8) i += 2;
if (i >= len) break;
}
}
if ( meta && ( LittleShort(pifh->special) & 1 ) && ( msgend - msgoffset ) && ( msgend < size ) )
{
const char * str = (const char *) ptr + msgoffset;
std::string msg(str);
//info.meta_add( field_comment, string_utf8_from_it_multiline( msg ) );
}
info->NumChannels = m_nChannels;
info->NumPatterns = LittleShort(pifh->patnum);
info->NumOrders = LittleShort(pifh->ordnum);
return true;
}
//==========================================================================
//
// DUMB memory file system
//
//==========================================================================
typedef struct tdumbfile_mem_status
{
const uint8_t *ptr;
unsigned int offset, size;
} dumbfile_mem_status;
static int DUMBCALLBACK dumbfile_mem_skip(void *f, long n)
{
dumbfile_mem_status * s = (dumbfile_mem_status *) f;
s->offset += n;
if (s->offset > s->size)
{
s->offset = s->size;
return 1;
}
return 0;
}
static int DUMBCALLBACK dumbfile_mem_getc(void *f)
{
dumbfile_mem_status * s = (dumbfile_mem_status *) f;
if (s->offset < s->size)
{
return *(s->ptr + s->offset++);
}
return -1;
}
static int32 DUMBCALLBACK dumbfile_mem_getnc(char *ptr, int32 n, void *f)
{
dumbfile_mem_status * s = (dumbfile_mem_status *) f;
long max = s->size - s->offset;
if (max > n) max = n;
if (max)
{
memcpy(ptr, s->ptr + s->offset, max);
s->offset += max;
}
return max;
}
static int DUMBCALLBACK dumbfile_mem_seek(void *f, long n)
{
dumbfile_mem_status * s = (dumbfile_mem_status *) f;
s->offset = n;
if (s->offset > s->size)
{
s->offset = s->size;
return 1;
}
return 0;
}
static long DUMBCALLBACK dumbfile_mem_get_size(void *f)
{
dumbfile_mem_status * s = (dumbfile_mem_status *) f;
return s->size;
}
static DUMBFILE_SYSTEM mem_dfs = {
NULL, // open
&dumbfile_mem_skip,
&dumbfile_mem_getc,
&dumbfile_mem_getnc,
NULL, // close
&dumbfile_mem_seek,
&dumbfile_mem_get_size
};
//==========================================================================
//
// dumb_read_allfile
//
//==========================================================================
DUMBFILE *dumb_read_allfile(dumbfile_mem_status *filestate, uint8_t *start, MusicIO::FileInterface *reader, int lenhave, int lenfull)
{
filestate->size = lenfull;
filestate->offset = 0;
if (lenhave >= lenfull)
filestate->ptr = (uint8_t *)start;
else
{
uint8_t *mem = new uint8_t[lenfull];
memcpy(mem, start, lenhave);
if (reader->read(mem + lenhave, lenfull - lenhave) != (lenfull - lenhave))
{
delete[] mem;
return NULL;
}
filestate->ptr = mem;
}
return dumbfile_open_ex(filestate, &mem_dfs);
}
//==========================================================================
//
// MOD_SetAutoChip
//
// Disables interpolation for short samples that meet criteria set by
// the cvars referenced at the top of this function.
//
//==========================================================================
static void MOD_SetAutoChip(DUH *duh)
{
int size_force = dumbConfig.mod_autochip_size_force;
int size_scan = dumbConfig.mod_autochip_size_scan;
int scan_threshold_8 = ((dumbConfig.mod_autochip_scan_threshold * 0x100) + 50) / 100;
int scan_threshold_16 = ((dumbConfig.mod_autochip_scan_threshold * 0x10000) + 50) / 100;
DUMB_IT_SIGDATA * itsd = duh_get_it_sigdata(duh);
if (itsd)
{
for (int i = 0, j = itsd->n_samples; i < j; i++)
{
IT_SAMPLE * sample = &itsd->sample[i];
if (sample->flags & IT_SAMPLE_EXISTS)
{
int channels = sample->flags & IT_SAMPLE_STEREO ? 2 : 1;
if (sample->length < size_force) sample->max_resampling_quality = 0;
else if (sample->length < size_scan)
{
if ((sample->flags & (IT_SAMPLE_LOOP|IT_SAMPLE_PINGPONG_LOOP)) == IT_SAMPLE_LOOP)
{
int loop_start = sample->loop_start * channels;
int loop_end = sample->loop_end * channels;
int s1, s2;
if (sample->flags & IT_SAMPLE_16BIT)
{
s1 = ((signed short *)sample->data)[loop_start];
s2 = ((signed short *)sample->data)[loop_end - channels];
if (abs(s1 - s2) > scan_threshold_16)
{
sample->max_resampling_quality = 0;
continue;
}
if (channels == 2)
{
s1 = ((signed short *)sample->data)[loop_start + 1];
s2 = ((signed short *)sample->data)[loop_end - 1];
if (abs(s1 - s2) > scan_threshold_16)
{
sample->max_resampling_quality = 0;
continue;
}
}
}
else
{
s1 = ((signed char *)sample->data)[loop_start];
s2 = ((signed char *)sample->data)[loop_end - channels];
if (abs(s1 - s2) > scan_threshold_8)
{
sample->max_resampling_quality = 0;
continue;
}
if (channels == 2)
{
s1 = ((signed char *)sample->data)[loop_start + 1];
s2 = ((signed char *)sample->data)[loop_end - 1];
if (abs(s1 - s2) > scan_threshold_8)
{
sample->max_resampling_quality = 0;
continue;
}
}
}
}
if ((sample->flags & (IT_SAMPLE_SUS_LOOP|IT_SAMPLE_PINGPONG_SUS_LOOP)) == IT_SAMPLE_SUS_LOOP)
{
int sus_loop_start = sample->sus_loop_start * channels;
int sus_loop_end = sample->sus_loop_end * channels;
int s1, s2;
if (sample->flags & IT_SAMPLE_16BIT)
{
s1 = ((signed short *)sample->data)[sus_loop_start];
s2 = ((signed short *)sample->data)[sus_loop_end - channels];
if (abs(s1 - s2) > scan_threshold_16)
{
sample->max_resampling_quality = 0;
continue;
}
if (channels == 2)
{
s1 = ((signed short *)sample->data)[sus_loop_start + 1];
s2 = ((signed short *)sample->data)[sus_loop_end - 1];
if (abs(s1 - s2) > scan_threshold_16)
{
sample->max_resampling_quality = 0;
continue;
}
}
}
else
{
s1 = ((signed char *)sample->data)[sus_loop_start];
s2 = ((signed char *)sample->data)[sus_loop_end - channels];
if (abs(s1 - s2) > scan_threshold_8)
{
sample->max_resampling_quality = 0;
continue;
}
if (channels == 2)
{
s1 = ((signed char *)sample->data)[sus_loop_start + 1];
s2 = ((signed char *)sample->data)[sus_loop_end - 1];
if (abs(s1 - s2) > scan_threshold_8)
{
sample->max_resampling_quality = 0;
continue;
}
}
}
}
int k, l = sample->length * channels;
if (sample->flags & IT_SAMPLE_LOOP) l = sample->loop_end * channels;
if (sample->flags & IT_SAMPLE_16BIT)
{
for (k = channels; k < l; k += channels)
{
if (abs(((signed short *)sample->data)[k - channels] - ((signed short *)sample->data)[k]) > scan_threshold_16)
{
break;
}
}
if (k < l)
{
sample->max_resampling_quality = 0;
continue;
}
if (channels == 2)
{
for (k = 2 + 1; k < l; k += 2)
{
if (abs(((signed short *)sample->data)[k - 2] - ((signed short *)sample->data)[k]) > scan_threshold_16)
{
break;
}
}
}
if (k < l)
{
sample->max_resampling_quality = 0;
continue;
}
}
else
{
for (k = channels; k < l; k += channels)
{
if (abs(((signed char *)sample->data)[k - channels] - ((signed char *)sample->data)[k]) > scan_threshold_8)
{
break;
}
}
if (k < l)
{
sample->max_resampling_quality = 0;
continue;
}
if (channels == 2)
{
for (k = 2 + 1; k < l; k += 2)
{
if (abs(((signed char *)sample->data)[k - 2] - ((signed char *)sample->data)[k]) > scan_threshold_8)
{
break;
}
}
}
if (k < l)
{
sample->max_resampling_quality = 0;
continue;
}
}
}
}
}
}
}
//==========================================================================
//
// MOD_OpenSong
//
//==========================================================================
StreamSource* MOD_OpenSong(MusicIO::FileInterface *reader, int samplerate)
{
DUH *duh = 0;
int headsize;
union
{
uint8_t start[64];
uint32_t dstart[64/4];
};
dumbfile_mem_status filestate;
DUMBFILE *f = NULL;
DumbSong *state = NULL;
bool is_it = false;
bool is_dos = true;
auto fpos = reader->tell();
int size = (int)reader->filelength();
filestate.ptr = start;
filestate.offset = 0;
headsize = MIN((int)sizeof(start), size);
if (headsize != reader->read(start, headsize))
{
return NULL;
}
if (size >= 4 && dstart[0] == MAKE_ID('I','M','P','M'))
{
is_it = true;
if ((f = dumb_read_allfile(&filestate, start, reader, headsize, size)))
{
duh = dumb_read_it_quick(f);
}
}
else if (size >= 17 && !memcmp(start, "Extended Module: ", 17))
{
if ((f = dumb_read_allfile(&filestate, start, reader, headsize, size)))
{
duh = dumb_read_xm_quick(f);
}
}
else if (size >= 0x30 && dstart[11] == MAKE_ID('S','C','R','M'))
{
if ((f = dumb_read_allfile(&filestate, start, reader, headsize, size)))
{
duh = dumb_read_s3m_quick(f);
}
}
else if (size >= 1168 &&
/*start[28] == 0x1A &&*/ start[29] == 2 &&
( !memcmp( &start[20], "!Scream!", 8 ) ||
!memcmp( &start[20], "BMOD2STM", 8 ) ||
!memcmp( &start[20], "WUZAMOD!", 8 ) ) )
{
if ((f = dumb_read_allfile(&filestate, start, reader, headsize, size)))
{
duh = dumb_read_stm_quick(f);
}
}
else if (size >= 2 &&
((start[0] == 0x69 && start[1] == 0x66) ||
(start[0] == 0x4A && start[1] == 0x4E)))
{
if ((f = dumb_read_allfile(&filestate, start, reader, headsize, size)))
{
duh = dumb_read_669_quick(f);
}
}
else if (size >= 0x30 && dstart[11] == MAKE_ID('P','T','M','F'))
{
if ((f = dumb_read_allfile(&filestate, start, reader, headsize, size)))
{
duh = dumb_read_ptm_quick(f);
}
}
else if (size >= 4 && dstart[0] == MAKE_ID('P','S','M',' '))
{
if ((f = dumb_read_allfile(&filestate, start, reader, headsize, size)))
{
duh = dumb_read_psm_quick(f, 0/*start_order*/);
/*start_order = 0;*/
}
}
else if (size >= 4 && dstart[0] == (uint32_t)MAKE_ID('P','S','M',254))
{
if ((f = dumb_read_allfile(&filestate, start, reader, headsize, size)))
{
duh = dumb_read_old_psm_quick(f);
}
}
else if (size >= 3 && start[0] == 'M' && start[1] == 'T' && start[2] == 'M')
{
if ((f = dumb_read_allfile(&filestate, start, reader, headsize, size)))
{
duh = dumb_read_mtm_quick(f);
}
}
else if (size >= 12 && dstart[0] == MAKE_ID('R','I','F','F') &&
(dstart[2] == MAKE_ID('D','S','M','F') ||
dstart[2] == MAKE_ID('A','M',' ',' ') ||
dstart[2] == MAKE_ID('A','M','F','F')))
{
if ((f = dumb_read_allfile(&filestate, start, reader, headsize, size)))
{
duh = dumb_read_riff_quick(f);
}
}
else if (size >= 32 &&
!memcmp( start, "ASYLUM Music Format", 19 ) &&
!memcmp( start + 19, " V1.0", 5 ) )
{
if ((f = dumb_read_allfile(&filestate, start, reader, headsize, size)))
{
duh = dumb_read_asy_quick(f);
}
}
else if (size >= 8 &&
dstart[0] == MAKE_ID('O','K','T','A') &&
dstart[1] == MAKE_ID('S','O','N','G'))
{
if ((f = dumb_read_allfile(&filestate, start, reader, headsize, size)))
{
duh = dumb_read_okt_quick(f);
}
}
if ( ! duh )
{
is_dos = false;
if (filestate.ptr == (uint8_t *)start)
{
if (!(f = dumb_read_allfile(&filestate, start, reader, headsize, size)))
{
reader->seek(fpos, SEEK_SET);
return NULL;
}
}
else
{
filestate.offset = 0;
}
// No way to get the filename, so we can't check for a .mod extension, and
// therefore, trying to load an old 15-instrument SoundTracker module is not
// safe. We'll restrict MOD loading to 31-instrument modules with known
// signatures and let the sound system worry about 15-instrument ones.
// (Assuming it even supports them)
duh = dumb_read_mod_quick(f, true);
}
if (f != NULL)
{
dumbfile_close(f);
}
if ( duh )
{
if (dumbConfig.mod_autochip)
{
MOD_SetAutoChip(duh);
}
state = new DumbSong(duh, samplerate);
if (is_it) ReadIT(filestate.ptr, size, state, false);
else ReadDUH(duh, state, false, is_dos);
}
else
{
// Reposition file pointer for other codecs to do their checks.
reader->seek(fpos, SEEK_SET);
}
if (filestate.ptr != (uint8_t *)start)
{
delete[] const_cast<uint8_t *>(filestate.ptr);
}
return state;
}
//==========================================================================
//
// DumbSong :: read static
//
//==========================================================================
bool DumbSong::GetData(void *buffer, size_t sizebytes)
{
if (eof)
{
memset(buffer, 0, sizebytes);
return false;
}
std::lock_guard<std::mutex> lock_(crit_sec);
while (sizebytes > 0)
{
int written = decode_run(buffer, (unsigned)sizebytes / 8);
if (written < 0)
{
return false;
}
if (written == 0)
{
memset(buffer, 0, sizebytes);
return true;
}
else
{
// Convert to float
for (int i = 0; i < written * 2; ++i)
{
((float *)buffer)[i] = (((int *)buffer)[i] / (float)(1 << 24)) * MasterVolume;
}
}
buffer = (uint8_t *)buffer + written * 8;
sizebytes -= written * 8;
}
return true;
}
//==========================================================================
//
// ChangeSetting
//
//==========================================================================
void DumbSong::ChangeSettingNum(const char* setting, double val)
{
if (!stricmp(setting, "dumb.mastervolume"))
MasterVolume = (float)val;
}
//==========================================================================
//
// DumbSong constructor
//
//==========================================================================
DumbSong::DumbSong(DUH* myduh, int samplerate)
{
duh = myduh;
sr = NULL;
eof = false;
interp = dumbConfig.mod_interp;
volramp = dumbConfig.mod_volramp;
written = 0;
length = 0;
start_order = 0;
MasterVolume = (float)dumbConfig.mod_dumb_mastervolume;
if (dumbConfig.mod_samplerate != 0)
{
srate = dumbConfig.mod_samplerate;
}
else
{
srate = samplerate;
}
delta = 65536.0 / srate;
}
//==========================================================================
//
// DumbSong destructor
//
//==========================================================================
DumbSong::~DumbSong()
{
if (sr) duh_end_sigrenderer(sr);
if (duh) unload_duh(duh);
}
//==========================================================================
//
// DumbSong GetFormat
//
//==========================================================================
SoundStreamInfo DumbSong::GetFormat()
{
return { 32*1024, srate, 2 };
}
//==========================================================================
//
// DumbSong :: Play
//
//==========================================================================
bool DumbSong::Start()
{
started = open2(0);
return started;
}
//==========================================================================
//
// DumbSong :: SetSubsong
//
//==========================================================================
bool DumbSong::SetSubsong(int order)
{
if (order == start_order)
{
return true;
}
if (!started)
{
start_order = order;
return true;
}
std::lock_guard<std::mutex> lock(crit_sec);
DUH_SIGRENDERER *oldsr = sr;
sr = NULL;
start_order = order;
if (!open2(0))
{
sr = oldsr;
return false;
}
duh_end_sigrenderer(oldsr);
return true;
}
//==========================================================================
//
// DumbSong :: open2
//
//==========================================================================
bool DumbSong::open2(long pos)
{
if (start_order != 0)
{
sr = dumb_it_start_at_order(duh, 2, start_order);
if (sr && pos) duh_sigrenderer_generate_samples(sr, 0, 1, pos, 0);
}
else
{
sr = duh_start_sigrenderer(duh, 0, 2, pos);
}
if (!sr)
{
return false;
}
DUMB_IT_SIGRENDERER *itsr = duh_get_it_sigrenderer(sr);
dumb_it_set_resampling_quality(itsr, interp);
dumb_it_set_ramp_style(itsr, volramp);
if (!m_Looping)
{
dumb_it_set_loop_callback(itsr, &dumb_it_callback_terminate, NULL);
}
dumb_it_set_xm_speed_zero_callback(itsr, &dumb_it_callback_terminate, NULL);
dumb_it_set_global_volume_zero_callback(itsr, &dumb_it_callback_terminate, NULL);
return true;
}
//==========================================================================
//
// DumbSong :: render
//
//==========================================================================
long DumbSong::render(double volume, double delta, long samples, sample_t **buffer)
{
long written = duh_sigrenderer_generate_samples(sr, volume, delta, samples, buffer);
if (written < samples)
{
if (!m_Looping)
{
eof = true;
}
else
{
duh_end_sigrenderer(sr);
sr = NULL;
if (!open2(0))
{
eof = true;
}
}
}
return written;
}
//==========================================================================
//
// DumbSong :: decode_run
//
// Given a buffer of 32-bit PCM stereo pairs and a size specified in
// samples, returns the number of samples written to the buffer.
//
//==========================================================================
int DumbSong::decode_run(void *buffer, unsigned int size)
{
if (eof) return 0;
DUMB_IT_SIGRENDERER *itsr = duh_get_it_sigrenderer(sr);
if (itsr == nullptr) return 0;
int dt = int(delta * 65536.0 + 0.5);
long samples = long((((LONG_LONG)itsr->time_left << 16) | itsr->sub_time_left) / dt);
if (samples == 0 || samples > (long)size) samples = size;
sample_t **buf = (sample_t **)&buffer;
int written = 0;
retry:
dumb_silence(buf[0], size * 2);
written = render(1, delta, samples, buf);
if (eof) return false;
else if (written == 0) goto retry;
else if (written == -1) return -1;
return written;
}
//==========================================================================
//
// DumbSong :: GetStats
//
//==========================================================================
std::string DumbSong::GetStats()
{
//return StreamSong::GetStats();
DUMB_IT_SIGRENDERER *itsr = duh_get_it_sigrenderer(sr);
DUMB_IT_SIGDATA *itsd = duh_get_it_sigdata(duh);
int channels = 0;
for (int i = 0; i < DUMB_IT_N_CHANNELS; i++)
{
IT_PLAYING * playing = itsr->channel[i].playing;
if (playing && !(playing->flags & IT_PLAYING_DEAD)) channels++;
}
for (int i = 0; i < DUMB_IT_N_NNA_CHANNELS; i++)
{
if (itsr->playing[i]) channels++;
}
if (itsr == NULL || itsd == NULL)
{
return "Problem getting stats";
}
else
{
char out[120];
snprintf(out, 120, "%s, Order:%3d/%d Patt:%2d/%d Row:%2d/%2d Chan:%2d/%2d Speed:%2d Tempo:%3d",
Codec.c_str(),
itsr->order, NumOrders,
(itsd->order && itsr->order < itsd->n_orders ? itsd->order[itsr->order] : 0), NumPatterns,
itsr->row, itsr->n_rows,
channels, NumChannels,
itsr->speed,
itsr->tempo
);
return out;
}
}
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