Redrawing arrays is quite another matter. With that amount of data to pass, people would keep complaining, unless graphics is done in a separate thread of the engine process.
that's a patch i've made once and with the one on soundfiler too to load the files in a thread, pd runs much more smoothly, here are the modifications for 0.37 tested on linux only.
cheers, sevy
/* Copyright (c) 1997-1999 Miller Puckette.
- For information on usage and redistribution, and for a DISCLAIMER OF ALL
- WARRANTIES, see the file, "LICENSE.txt," in this distribution. */
/* this file contains, first, a collection of soundfile access routines, a sort of soundfile library. Second, the "soundfiler" object is defined which uses the routines to read or write soundfiles, synchronously, from garrays. These operations are not to be done in "real time" as they may have to wait for disk accesses (even the write routine.) Finally, the realtime objects readsf~ and writesf~ are defined which confine disk operations to a separate thread so that they can be used in real time. The real-time disk access objects are available for linux only so far, although they could be compiled for Windows if someone were willing to find a Pthreads package for it. */
#ifdef UNIX #include <stdlib.h> #include <unistd.h> #include <fcntl.h> #endif #include <pthread.h> #ifdef NT #include <io.h> #endif #include <stdio.h> #include <string.h> #include <errno.h>
#include "m_pd.h"
#define MAXSFCHANS 64
/***************** soundfile header structures ************************/
typedef unsigned short uint16; typedef unsigned long uint32;
#define FORMAT_WAVE 0 #define FORMAT_AIFF 1 #define FORMAT_NEXT 2
/* the NeXTStep sound header structure; can be big or little endian */
typedef struct _nextstep { char ns_fileid[4]; /* magic number '.snd' if file is big-endian */ uint32 ns_onset; /* byte offset of first sample */ uint32 ns_length; /* length of sound in bytes */ uint32 ns_format; /* format; see below */ uint32 ns_sr; /* sample rate */ uint32 ns_nchans; /* number of channels */ char ns_info[4]; /* comment */ } t_nextstep;
#define NS_FORMAT_LINEAR_16 3 #define NS_FORMAT_LINEAR_24 4 #define NS_FORMAT_FLOAT 6 #define SCALE (1./(1024. * 1024. * 1024. * 2.))
/* the WAVE header. All Wave files are little endian. We assume the "fmt" chunk comes first which is usually the case but perhaps not always; same for AIFF and the "COMM" chunk. */
typedef unsigned word; typedef unsigned long dword;
typedef struct _wave { char w_fileid[4]; /* chunk id 'RIFF' */ uint32 w_chunksize; /* chunk size */ char w_waveid[4]; /* wave chunk id 'WAVE' */ char w_fmtid[4]; /* format chunk id 'fmt ' */ uint32 w_fmtchunksize; /* format chunk size */ uint16 w_fmttag; /* format tag, 1 for PCM */ uint16 w_nchannels; /* number of channels */ uint32 w_samplespersec; /* sample rate in hz */ uint32 w_navgbytespersec; /* average bytes per second */ uint16 w_nblockalign; /* number of bytes per sample */ uint16 w_nbitspersample; /* number of bits in a sample */ char w_datachunkid[4]; /* data chunk id 'data' */ uint32 w_datachunksize; /* length of data chunk */ } t_wave;
/* the AIFF header. I'm assuming AIFC is compatible but don't really know that. */
typedef struct _datachunk { char dc_id[4]; /* data chunk id 'SSND' */ uint32 dc_size; /* length of data chunk */ } t_datachunk;
#define CHUNKHDRSIZE sizeof(t_datachunk)
typedef struct _comm { uint16 c_nchannels; /* number of channels */ uint16 c_nframeshi; /* # of sample frames (hi) */ uint16 c_nframeslo; /* # of sample frames (lo) */ uint16 c_bitspersamp; /* bits per sample */ unsigned char c_samprate[10]; /* sample rate, 80-bit float! */ } t_comm;
/* this version is more convenient for writing them out: */
typedef struct _aiff { char a_fileid[4]; /* chunk id 'FORM' */ uint32 a_chunksize; /* chunk size */ char a_aiffid[4]; /* aiff chunk id 'AIFF' */ char a_fmtid[4]; /* format chunk id 'COMM' */ uint32 a_fmtchunksize; /* format chunk size, 18 */ uint16 a_nchannels; /* number of channels */ uint16 a_nframeshi; /* # of sample frames (hi) */ uint16 a_nframeslo; /* # of sample frames (lo) */ uint16 a_bitspersamp; /* bits per sample */ unsigned char a_samprate[10]; /* sample rate, 80-bit float! */ } t_aiff;
#define AIFFHDRSIZE 38 /* probably not what sizeof() gives */
#define AIFFPLUS (AIFFHDRSIZE + 8) /* header size including first chunk hdr */
#define WHDR1 sizeof(t_nextstep) #define WHDR2 (sizeof(t_wave) > WHDR1 ? sizeof (t_wave) : WHDR1) #define WRITEHDRSIZE (AIFFPLUS > WHDR2 ? AIFFPLUS : WHDR2)
#define READHDRSIZE (16 > WHDR2 ? 16 : WHDR2)
#define OBUFSIZE MAXPDSTRING /* assume MAXPDSTRING is bigger than headers */
#ifdef NT #include <fcntl.h> #define BINCREATE _O_WRONLY | _O_CREAT | _O_BINARY #else #define BINCREATE O_WRONLY | O_CREAT #endif
/* this routine returns 1 if the high order byte comes at the lower address on our architecture (big-endianness.). It's 1 for Motorola, 0 for Intel: */
extern int garray_ambigendian(void);
/* byte swappers */
static uint32 swap4(uint32 n, int doit) { if (doit) return (((n & 0xff) << 24) | ((n & 0xff00) << 8) | ((n & 0xff0000) >> 8) | ((n & 0xff000000) >> 24)); else return (n); }
static uint16 swap2(uint32 n, int doit) { if (doit) return (((n & 0xff) << 8) | ((n & 0xff00) >> 8)); else return (n); }
static void swapstring(char *foo, int doit) { if (doit) { char a = foo[0], b = foo[1], c = foo[2], d = foo[3]; foo[0] = d; foo[1] = c; foo[2] = b; foo[3] = a; } }
/******************** soundfile access routines **********************/
void readsf_banana( void); /* debugging */
/* This routine opens a file, looks for either a nextstep or "wave" header,
- seeks to end of it, and fills in bytes per sample and number of channels.
- Only 2- and 3-byte fixed-point samples and 4-byte floating point samples
- are supported. If "headersize" is nonzero, the
- caller should supply the number of channels, endinanness, and bytes per
- sample; the header is ignored. Otherwise, the routine tries to read the
- header and fill in the properties.
*/
int open_soundfile(const char *dirname, const char *filename, int headersize, int *p_bytespersamp, int *p_bigendian, int *p_nchannels, long *p_bytelimit, long skipframes) { char buf[OBUFSIZE], *bufptr; int fd, format, nchannels, bigendian, bytespersamp, swap, sysrtn; long bytelimit = 0x7fffffff; errno = 0; fd = open_via_path(dirname, filename, "", buf, &bufptr, MAXPDSTRING, 1); if (fd < 0) return (-1); if (headersize >= 0) /* header detection overridden */ { bigendian = *p_bigendian; nchannels = *p_nchannels; bytespersamp = *p_bytespersamp; bytelimit = *p_bytelimit; } else { int bytesread = read(fd, buf, READHDRSIZE); int format; if (bytesread < 4) goto badheader; if (!strncmp(buf, ".snd", 4)) format = FORMAT_NEXT, bigendian = 1; else if (!strncmp(buf, "dns.", 4)) format = FORMAT_NEXT, bigendian = 0; else if (!strncmp(buf, "RIFF", 4)) { if (bytesread < 12 || strncmp(buf + 8, "WAVE", 4)) goto badheader; format = FORMAT_WAVE, bigendian = 0; } else if (!strncmp(buf, "FORM", 4)) { if (bytesread < 12 || strncmp(buf + 8, "AIFF", 4)) goto badheader; format = FORMAT_AIFF, bigendian = 1; } else goto badheader; swap = (bigendian != garray_ambigendian()); if (format == FORMAT_NEXT) /* nextstep header */ { uint32 param; if (bytesread < (int)sizeof(t_nextstep)) goto badheader; nchannels = swap4(((t_nextstep *)buf)->ns_nchans, swap); format = swap4(((t_nextstep *)buf)->ns_format, swap); headersize = swap4(((t_nextstep *)buf)->ns_onset, swap); if (format == NS_FORMAT_LINEAR_16) bytespersamp = 2; else if (format == NS_FORMAT_LINEAR_24) bytespersamp = 3; else if (format == NS_FORMAT_FLOAT) bytespersamp = 4; else goto badheader; bytelimit = 0x7fffffff; } else if (format == FORMAT_WAVE) /* wave header */ { if (bytesread < (int)sizeof(t_wave)) goto badheader; if (strncmp(buf + 12, "fmt ", 4)) goto badheader; nchannels = swap2(((t_wave *)buf)->w_nchannels, swap); format = swap2(((t_wave *)buf)->w_nbitspersample, swap); if (format == 16) bytespersamp = 2; else if (format == 24) bytespersamp = 3; else if (format == 32) bytespersamp = 4; else goto badheader; headersize = sizeof(t_wave); while (strncmp(((t_wave *)buf)->w_datachunkid, "data", 4)) { /* extra chunk at beginning: try to skip it and pray */ long skip = swap4(((t_wave *)buf)->w_datachunksize, swap); if ((skip < 4) || (lseek(fd, skip, SEEK_CUR) < 0)) { perror("lseek"); post("confused by extra chunks in wave header?"); goto badheader; } headersize += skip + 8; if (read(fd, ((t_wave *)buf)->w_datachunkid, 8) < 8) { perror("read"); post("couldn't read past extra chunks in wave header?"); goto badheader; } } bytelimit = swap4(((t_wave *)buf)->w_datachunksize, swap); } else { /* AIFF. This is awful. Actually we should extend the same courtest to "wav" except that wave headers always seem to have their chunks in the same, reasonable order. */ headersize = 12; if (bytesread < 20) goto badheader; /* First we guess a number of channels, etc., in case there's no COMM block to follow. */ nchannels = 1; bytespersamp = 2; /* copy the first chunk header to beginnning of buffer. */ memcpy(buf, buf + headersize, sizeof(t_datachunk)); /* read chunks in loop until we get to the data chunk */ while (strncmp(((t_datachunk *)buf)->dc_id, "SSND", 4)) { long chunksize = swap4(((t_datachunk *)buf)->dc_size, swap), seekto = headersize + chunksize + 8, seekout; if (!strncmp(((t_datachunk *)buf)->dc_id, "COMM", 4)) /* post("chunk %c %c %c %c seek %d", ((t_datachunk *)buf)->dc_id[0], ((t_datachunk *)buf)->dc_id[1], ((t_datachunk *)buf)->dc_id[2], ((t_datachunk *)buf)->dc_id[3], seekto); */ if (!strncmp(((t_datachunk *)buf)->dc_id, "COMM", 4)) { long commblockonset = headersize + 8; seekout = lseek(fd, commblockonset, SEEK_SET); if (seekout != commblockonset) goto badheader; if (read(fd, buf, sizeof(t_comm)) < (int) sizeof(t_comm)) goto badheader; nchannels = swap2(((t_comm *)buf)->c_nchannels, swap); format = swap2(((t_comm *)buf)->c_bitspersamp, swap); if (format == 16) bytespersamp = 2; else if (format == 24) bytespersamp = 3; else goto badheader; } seekout = lseek(fd, seekto, SEEK_SET); if (seekout != seekto) goto badheader; if (read(fd, buf, sizeof(t_datachunk)) < (int) sizeof(t_datachunk)) goto badheader; headersize = seekto; } bytelimit = swap4(((t_datachunk *)buf)->dc_size, swap); headersize += 8; } } /* seek past header and any sample frames to skip */ sysrtn = lseek(fd, nchannels * bytespersamp * skipframes + headersize, 0); if (sysrtn != nchannels * bytespersamp * skipframes + headersize) return (-1); /* copy sample format back to caller */ *p_bigendian = bigendian; *p_nchannels = nchannels; *p_bytespersamp = bytespersamp; *p_bytelimit = bytelimit; return (fd); badheader: /* the header wasn't recognized. We're threadable here so let's not print out the error... */ errno = EIO; return (-1); }
static void soundfile_xferin(int sfchannels, int nvecs, float **vecs, long itemsread, unsigned char *buf, int nitems, int bytespersamp, int bigendian) { int i, j; unsigned char *sp, *sp2; float *fp; int nchannels = (sfchannels < nvecs ? sfchannels : nvecs); int bytesperframe = bytespersamp * sfchannels; for (i = 0, sp = buf; i < nchannels; i++, sp += bytespersamp) { if (bytespersamp == 2) { if (bigendian) { for (j = 0, sp2 = sp, fp=vecs[i] + itemsread; j < nitems; j++, sp2 += bytesperframe, fp++) *fp = SCALE * ((sp2[0] << 24) | (sp2[1] << 16)); } else { for (j = 0, sp2 = sp, fp=vecs[i] + itemsread; j < nitems; j++, sp2 += bytesperframe, fp++) *fp = SCALE * ((sp2[1] << 24) | (sp2[0] << 16)); } } else if (bytespersamp == 3) { if (bigendian) { for (j = 0, sp2 = sp, fp=vecs[i] + itemsread; j < nitems; j++, sp2 += bytesperframe, fp++) *fp = SCALE * ((sp2[0] << 24) | (sp2[1] << 16) | (sp2[2] << 8)); } else { for (j = 0, sp2 = sp, fp=vecs[i] + itemsread; j < nitems; j++, sp2 += bytesperframe, fp++) *fp = SCALE * ((sp2[2] << 24) | (sp2[1] << 16) | (sp2[0] << 8)); } } else if (bytespersamp == 4) { if (bigendian) { for (j = 0, sp2 = sp, fp=vecs[i] + itemsread; j < nitems; j++, sp2 += bytesperframe, fp++) *(long *)fp = ((sp2[0] << 24) | (sp2[1] << 16) | (sp2[2] << 8) | sp2[3]); } else { for (j = 0, sp2 = sp, fp=vecs[i] + itemsread; j < nitems; j++, sp2 += bytesperframe, fp++) *(long *)fp = ((sp2[3] << 24) | (sp2[2] << 16) | (sp2[1] << 8) | sp2[0]); } } } /* zero out other outputs */ for (i = sfchannels; i < nvecs; i++) for (j = nitems, fp = vecs[i]; j--; ) *fp++ = 0;
}
/* soundfiler_write ...
usage: write [flags] filename table ...
flags:
-nframes <frames>
-skip <frames>
-bytes <bytes per sample>
-normalize
-nextstep
-wave
-big
-little
*/
/* the routine which actually does the work should LATER also be called
from garray_write16. */
/* Parse arguments for writing. The "obj" argument is only for flagging
errors. For streaming to a file the "normalize", "onset" and "nframes"
arguments shouldn't be set but the calling routine flags this. */
static int soundfiler_writeargparse(void *obj, int *p_argc, t_atom **p_argv, t_symbol **p_filesym, int *p_filetype, int *p_bytespersamp, int *p_swap, int *p_bigendian, int *p_normalize, long *p_onset, long *p_nframes) { int argc = *p_argc; t_atom *argv = *p_argv; int bytespersamp = 2, bigendian = 0, endianness = -1, swap, filetype = FORMAT_WAVE, normalize = 0; long onset = 0, nframes = 0x7fffffff; t_symbol *filesym; while (argc > 0 && argv->a_type == A_SYMBOL && *argv->a_w.w_symbol->s_name == '-') { char *flag = argv->a_w.w_symbol->s_name + 1; if (!strcmp(flag, "skip")) { if (argc < 2 || argv[1].a_type != A_FLOAT || ((onset = argv[1].a_w.w_float) < 0)) goto usage; argc -= 2; argv += 2; } else if (!strcmp(flag, "nframes")) { if (argc < 2 || argv[1].a_type != A_FLOAT || ((nframes = argv[1].a_w.w_float) < 0)) goto usage; argc -= 2; argv += 2; } else if (!strcmp(flag, "bytes")) { if (argc < 2 || argv[1].a_type != A_FLOAT || ((bytespersamp = argv[1].a_w.w_float) < 2) || bytespersamp > 4) { post( "%d", __LINE__ );goto usage; } argc -= 2; argv += 2; } else if (!strcmp(flag, "normalize")) { normalize = 1; argc -= 1; argv += 1; } else if (!strcmp(flag, "wave")) { filetype = FORMAT_WAVE; argc -= 1; argv += 1; } else if (!strcmp(flag, "nextstep")) { filetype = FORMAT_NEXT; argc -= 1; argv += 1; } else if (!strcmp(flag, "aiff")) { filetype = FORMAT_AIFF; argc -= 1; argv += 1; } else if (!strcmp(flag, "big")) { endianness = 1; argc -= 1; argv += 1; } else if (!strcmp(flag, "little")) { endianness = 1; argc -= 1; argv += 1; } else { post( "%d", __LINE__ );goto usage; } } /* only NextStep handles floating point samples */ if (bytespersamp == 4) filetype = FORMAT_NEXT;
/* for WAVE force little endian; for nextstep use machine native */
if (filetype == FORMAT_WAVE)
{
bigendian = 0;
if (endianness == 1)
pd_error(obj, "WAVE file forced to little endian");
}
else if (filetype == FORMAT_AIFF)
{
bigendian = 1;
if (endianness == 0)
pd_error(obj, "AIFF file forced to big endian");
}
else if (endianness == -1)
{
bigendian = garray_ambigendian();
}
swap = (bigendian != garray_ambigendian());
if (!argc || argv->a_type != A_SYMBOL)
goto usage;
filesym = argv->a_w.w_symbol;
argc--; argv++;
*p_argc = argc;
*p_argv = argv;
*p_filesym = filesym;
*p_filetype = filetype;
*p_bytespersamp = bytespersamp;
*p_swap = swap;
*p_normalize = normalize;
*p_onset = onset;
*p_nframes = nframes;
*p_bigendian = bigendian;
return (0);
usage: return (-1); }
static int create_soundfile(t_canvas *canvas, const char *filename, int filetype, int nframes, int bytespersamp, int bigendian, int nchannels, int swap) { char filenamebuf[MAXPDSTRING], buf2[MAXPDSTRING]; char headerbuf[WRITEHDRSIZE]; t_wave *wavehdr = (t_wave *)headerbuf; t_nextstep *nexthdr = (t_nextstep *)headerbuf; t_aiff *aiffhdr = (t_aiff *)headerbuf; int fd, headersize = 0;
strncpy(filenamebuf, filename, MAXPDSTRING-10);
filenamebuf[MAXPDSTRING-10] = 0;
if (filetype == FORMAT_NEXT)
{
if (strcmp(filenamebuf + strlen(filenamebuf)-4, ".snd"))
strcat(filenamebuf, ".snd");
if (bigendian)
strncpy(nexthdr->ns_fileid, ".snd", 4);
else strncpy(nexthdr->ns_fileid, "dns.", 4);
nexthdr->ns_onset = swap4(sizeof(*nexthdr), swap);
nexthdr->ns_length = 0;
nexthdr->ns_format = swap4((bytespersamp == 3 ? NS_FORMAT_LINEAR_24 :
(bytespersamp == 4 ? NS_FORMAT_FLOAT : NS_FORMAT_LINEAR_16)), swap);;
nexthdr->ns_sr = swap4(44100, swap); /* lie */
nexthdr->ns_nchans = swap4(nchannels, swap);
strcpy(nexthdr->ns_info, "Pd ");
swapstring(nexthdr->ns_info, swap);
headersize = sizeof(t_nextstep);
}
else if (filetype == FORMAT_AIFF)
{
long datasize = nframes * nchannels * bytespersamp;
long longtmp;
static unsigned char dogdoo[] =
{0x40, 0x0e, 0xac, 0x44, 0, 0, 0, 0, 0, 0, 'S', 'S', 'N', 'D'};
if (strcmp(filenamebuf + strlen(filenamebuf)-4, ".aif") &&
strcmp(filenamebuf + strlen(filenamebuf)-5, ".aiff"))
strcat(filenamebuf, ".aif");
strncpy(aiffhdr->a_fileid, "FORM", 4);
aiffhdr->a_chunksize = swap4(datasize + sizeof(*aiffhdr) + 4, swap);
strncpy(aiffhdr->a_aiffid, "AIFF", 4);
strncpy(aiffhdr->a_fmtid, "COMM", 4);
aiffhdr->a_fmtchunksize = swap4(18, swap);
aiffhdr->a_nchannels = swap2(nchannels, swap);
longtmp = swap4(nframes, swap);
memcpy(&aiffhdr->a_nframeshi, &longtmp, 4);
aiffhdr->a_bitspersamp = swap2(8 * bytespersamp, swap);
memcpy(aiffhdr->a_samprate, dogdoo, sizeof(dogdoo));
longtmp = swap4(datasize, swap);
memcpy(aiffhdr->a_samprate + sizeof(dogdoo), &longtmp, 4);
headersize = AIFFPLUS;
}
else /* WAVE format */
{
long datasize = nframes * nchannels * bytespersamp;
if (strcmp(filenamebuf + strlen(filenamebuf)-4, ".wav"))
strcat(filenamebuf, ".wav");
strncpy(wavehdr->w_fileid, "RIFF", 4);
wavehdr->w_chunksize = swap4(datasize + sizeof(*wavehdr) - 8, swap);
strncpy(wavehdr->w_waveid, "WAVE", 4);
strncpy(wavehdr->w_fmtid, "fmt ", 4);
wavehdr->w_fmtchunksize = swap4(16, swap);
wavehdr->w_fmttag = swap2(1, swap);
wavehdr->w_nchannels = swap2(nchannels, swap);
wavehdr->w_samplespersec = swap4(44100, swap);
wavehdr->w_navgbytespersec = swap4(44100 * nchannels * bytespersamp, swap);
wavehdr->w_nblockalign = swap2(bytespersamp, swap);
wavehdr->w_nbitspersample = swap2(8 * bytespersamp, swap);
strncpy(wavehdr->w_datachunkid, "data", 4);
wavehdr->w_datachunksize = swap4(datasize, swap);
headersize = sizeof(t_wave);
}
canvas_makefilename(canvas, filenamebuf, buf2, MAXPDSTRING);
sys_bashfilename(buf2, buf2);
if ((fd = open(buf2, BINCREATE, 0666)) < 0)
return (-1);
if (write(fd, headerbuf, headersize) < headersize)
{
close (fd);
return (-1);
}
return (fd);
}
static void soundfile_finishwrite(void *obj, char *filename, int fd,
int filetype, long nframes, long itemswritten, int bytesperframe, int swap)
{
if (itemswritten < nframes)
{
if (nframes < 0x7fffffff)
pd_error(obj, "soundfiler_write: %d out of %d bytes written",
itemswritten, nframes);
/* try to fix size fields in header */
if (filetype == FORMAT_WAVE)
{
long datasize = itemswritten * bytesperframe, mofo;
if (lseek(fd,
((char *)(&((t_wave *)0)->w_chunksize)) - (char *)0,
SEEK_SET) == 0)
goto baddonewrite;
mofo = swap4(datasize + sizeof(t_wave) - 8, swap);
if (write(fd, (char *)(&mofo), 4) < 4)
goto baddonewrite;
if (lseek(fd,
((char *)(&((t_wave *)0)->w_datachunksize)) - (char *)0,
SEEK_SET) == 0)
goto baddonewrite;
mofo = swap4(datasize, swap);
if (write(fd, (char *)(&mofo), 4) < 4)
goto baddonewrite;
}
if (filetype == FORMAT_AIFF)
{
long mofo;
if (lseek(fd,
((char *)(&((t_aiff *)0)->a_nframeshi)) - (char *)0,
SEEK_SET) == 0)
goto baddonewrite;
mofo = swap4(nframes, swap);
if (write(fd, (char *)(&mofo), 4) < 4)
goto baddonewrite;
}
}
return;
baddonewrite:
post("%s: %s", filename, strerror(errno));
}
static void soundfile_xferout(int nchannels, float **vecs, unsigned char *buf, int nitems, long onset, int bytespersamp, int bigendian, float normalfactor) { int i, j; unsigned char *sp, *sp2; float *fp; int bytesperframe = bytespersamp * nchannels; long xx; for (i = 0, sp = buf; i < nchannels; i++, sp += bytespersamp) { if (bytespersamp == 2) { float ff = normalfactor * 32768.; if (bigendian) { for (j = 0, sp2 = sp, fp = vecs[i] + onset; j < nitems; j++, sp2 += bytesperframe, fp++) { int xx = 32768. + (*fp * ff); xx -= 32768; if (xx < -32767) xx = -32767; if (xx > 32767) xx = 32767; sp2[0] = (xx >> 8); sp2[1] = xx; } } else { for (j = 0, sp2 = sp, fp=vecs[i] + onset; j < nitems; j++, sp2 += bytesperframe, fp++) { int xx = 32768. + (*fp * ff); xx -= 32768; if (xx < -32767) xx = -32767; if (xx > 32767) xx = 32767; sp2[1] = (xx >> 8); sp2[0] = xx; } } } else if (bytespersamp == 3) { float ff = normalfactor * 8388608.; if (bigendian) { for (j = 0, sp2 = sp, fp=vecs[i] + onset; j < nitems; j++, sp2 += bytesperframe, fp++) { int xx = 8388608. + (*fp * ff); xx -= 8388608; if (xx < -8388607) xx = -8388607; if (xx > 8388607) xx = 8388607; sp2[0] = (xx >> 16); sp2[1] = (xx >> 8); sp2[2] = xx; } } else { for (j = 0, sp2 = sp, fp=vecs[i] + onset; j < nitems; j++, sp2 += bytesperframe, fp++) { int xx = 8388608. + (*fp * ff); xx -= 8388608; if (xx < -8388607) xx = -8388607; if (xx > 8388607) xx = 8388607; sp2[2] = (xx >> 16); sp2[1] = (xx >> 8); sp2[0] = xx; } } } else if (bytespersamp == 4) { if (bigendian) { for (j = 0, sp2 = sp, fp=vecs[i] + onset; j < nitems; j++, sp2 += bytesperframe, fp++) { float f2 = *fp * normalfactor; xx = *(long *)&f2; sp2[0] = (xx >> 24); sp2[1] = (xx >> 24); sp2[2] = (xx >> 24); sp2[3] = xx; } } else { for (j = 0, sp2 = sp, fp=vecs[i] + onset; j < nitems; j++, sp2 += bytesperframe, fp++) { float f2 = *fp * normalfactor; xx = *(long *)&f2; sp2[3] = (xx >> 24); sp2[2] = (xx >> 24); sp2[1] = (xx >> 24); sp2[0] = xx; } } } } }
/* ------- soundfiler - reads and writes soundfiles to/from "garrays" ---- */ #define DEFMAXSIZE 4000000 /* default maximum 16 MB per channel */ #define SAMPBUFSIZE 1024
static t_class *soundfiler_class;
typedef struct _soundfiler { t_object x_obj; t_canvas *x_canvas;
pthread_t x_readchild;
t_int x_channels;
t_int x_bytespersamp;
t_int x_bigendian;
t_int x_fd;
t_int x_argc;
t_garray **x_garrays;
t_float **x_vecs;
long x_finalsize;
} t_soundfiler;
static t_soundfiler *soundfiler_new(void) { t_soundfiler *x = (t_soundfiler *)pd_new(soundfiler_class); x->x_canvas = canvas_getcurrent(); x->x_readchild = 0; x->x_vecs = (t_float**) getbytes( MAXSFCHANS*sizeof(t_float*) ); x->x_garrays = (t_garray**) getbytes( MAXSFCHANS*sizeof(t_garray*) ); outlet_new(&x->x_obj, &s_float); return (x); }
/* soundfiler_read ...
usage: read [flags] filename table ...
flags:
-skip <frames> ... frames to skip in file
-nframes <frames>
-onset <frames> ... onset in table to read into (NOT DONE YET)
-raw <headersize channels bytes endian>
-resize
-maxsize <max-size>
modified by ydegoyon@free.fr :
reading is now made in a low level priority thread to avoid clicks
*/
static void *soundfiler_doread( void* sf ) { char sampbuf[SAMPBUFSIZE]; int bufframes, nitems, i, j; long itemsread = 0; FILE *fp; t_soundfiler *soundfiler = ( t_soundfiler* ) sf;
struct sched_param tparams;
#ifdef LINUX /* eventually, lower thread priority */ /* on redhat 7.0, default priority is set to 0 and this code does nothing */ if ( sched_getparam( 0, &tparams ) < 0 ) { perror( "sched_getparam" ); } else { post( "soundfiler : child priority : %d", tparams.sched_priority ); } if ( tparams.sched_priority > 10 ) { tparams.sched_priority -= 10; if ( sched_setparam( 0, &tparams ) < 0 ) { perror( "sched_setparam" ); } else { post( "soundfiler : child priority set to : %d", tparams.sched_priority ); } } #endif fp = fdopen(soundfiler->x_fd, "rb"); bufframes = SAMPBUFSIZE / (soundfiler->x_channels * soundfiler->x_bytespersamp);
for (itemsread = 0; itemsread < soundfiler->x_finalsize; )
{
int thisread = soundfiler->x_finalsize - itemsread;
thisread = (thisread > bufframes ? bufframes : thisread);
nitems = fread(sampbuf, soundfiler->x_channels * soundfiler->x_bytespersamp,
thisread, fp);
if (nitems <= 0) break;
soundfile_xferin(soundfiler->x_channels, soundfiler->x_argc, soundfiler->x_vecs, itemsread,
(unsigned char *)sampbuf, nitems,
soundfiler->x_bytespersamp, soundfiler->x_bigendian);
itemsread += nitems;
}
/* zero out remaining elements of vectors */
for (i = 0; i < soundfiler->x_argc; i++)
{
int nzero, vecsize;
garray_getfloatarray(soundfiler->x_garrays[i], &vecsize, &soundfiler->x_vecs[i]);
for (j = itemsread; j < vecsize; j++)
soundfiler->x_vecs[i][j] = 0;
}
/* zero out vectors in excess of number of channels */
for (i = soundfiler->x_channels; i < soundfiler->x_argc; i++)
{
int vecsize;
float *foo;
garray_getfloatarray(soundfiler->x_garrays[i], &vecsize, &foo);
for (j = 0; j < vecsize; j++)
foo[j] = 0;
}
/* do all graphics updates */
for (i = 0; i < soundfiler->x_argc; i++) {
garray_redraw(soundfiler->x_garrays[i]);
}
fclose(fp);
soundfiler->x_fd = -1;
goto done;
done: if (soundfiler->x_fd >= 0) close (soundfiler->x_fd);
return NULL;
}
static void soundfiler_read(t_soundfiler *x, t_symbol *s, int argc, t_atom *argv) { pthread_attr_t soundfiler_read_child_attr; int headersize = -1, channels = 0, bytespersamp = 0, bigendian = 0, resize = 0, i, j; long skipframes = 0, nframes = 0, finalsize = 0, itemsleft, maxsize = DEFMAXSIZE, bytelimit = 0x7fffffff; int fd = -1; char endianness, *filename;
/* validate termination of previous thread */
/* to free all its ressources ( stack, ... ) */
if ( x->x_readchild != 0 ) {
if ( pthread_join( x->x_readchild, NULL ) < 0 ) {
post( "soundfiler : error : read child ended badly" );
perror( "pthread_join" );
} else {
post( "soundfiler : thread %d ended", x->x_readchild );
}
}
while (argc > 0 && argv->a_type == A_SYMBOL &&
*argv->a_w.w_symbol->s_name == '-')
{
char *flag = argv->a_w.w_symbol->s_name + 1;
if (!strcmp(flag, "skip"))
{
if (argc < 2 || argv[1].a_type != A_FLOAT ||
((skipframes = argv[1].a_w.w_float) < 0))
{ post( "%d", __LINE__ );goto usage; }
argc -= 2; argv += 2;
}
else if (!strcmp(flag, "nframes"))
{
if ( argc < 2 || argv[1].a_type != A_FLOAT ||
((nframes = argv[1].a_w.w_float) < 0))
{ post( "%d", __LINE__ );goto usage; }
argc -= 2; argv += 2;
}
else if (!strcmp(flag, "raw"))
{
if ( argc < 5 ||
argv[1].a_type != A_FLOAT ||
((headersize = argv[1].a_w.w_float) < 0) ||
argv[2].a_type != A_FLOAT ||
((channels = argv[2].a_w.w_float) < 1) ||
(channels > MAXSFCHANS) ||
argv[3].a_type != A_FLOAT ||
((bytespersamp = argv[3].a_w.w_float) < 2) ||
(bytespersamp > 4) ||
argv[4].a_type != A_SYMBOL ||
((endianness = argv[4].a_w.w_symbol->s_name[0]) != 'b'
&& endianness != 'l' && endianness != 'n'))
{ post( "%d", __LINE__ );goto usage; }
if (endianness == 'b')
bigendian = 1;
else if (endianness == 'l')
bigendian = 0;
else
bigendian = garray_ambigendian();
argc -= 5; argv += 5;
}
else if (!strcmp(flag, "resize"))
{
resize = 1;
argc -= 1; argv += 1;
}
else if (!strcmp(flag, "maxsize"))
{
if ( argc < 2 || argv[1].a_type != A_FLOAT ||
((maxsize = argv[1].a_w.w_float) < 0))
{ post( "%d", __LINE__ );goto usage; }
argc -= 2; argv += 2;
}
else { post( "%d", __LINE__ );goto usage; }
}
if ( argc < 2 || argc > MAXSFCHANS + 1 || argv[0].a_type != A_SYMBOL)
{ post( "%d", __LINE__ );goto usage; }
filename = argv[0].a_w.w_symbol->s_name;
argc--; argv++;
for (i = 0; i < argc; i++)
{
int vecsize;
if (argv[i].a_type != A_SYMBOL)
{ post( "%d", __LINE__ );goto usage; }
if (!(x->x_garrays[i] =
(t_garray *)pd_findbyclass(argv[i].a_w.w_symbol, garray_class)))
{
pd_error(x, "%s: no such table", argv[i].a_w.w_symbol->s_name);
return;
}
else if (!garray_getfloatarray(x->x_garrays[i], &vecsize, &x->x_vecs[i]))
error("%s: bad template for tabwrite",
argv[i].a_w.w_symbol->s_name);
if (finalsize && finalsize != vecsize && !resize)
{
post("soundfiler_read: arrays have different lengths; resizing...");
resize = 1;
}
finalsize = vecsize;
}
fd = open_soundfile(canvas_getdir(x->x_canvas)->s_name, filename,
headersize, &bytespersamp, &bigendian, &channels, &bytelimit,
skipframes);
if (fd < 0)
{
pd_error(x, "soundfiler_read: %s: %s", filename, (errno == EIO ?
"unknown or bad header format" : strerror(errno)));
return;
}
if (resize)
{
/* figure out what to resize to */
long poswas, eofis, framesinfile;
poswas = lseek(fd, 0, SEEK_CUR); eofis = lseek(fd, 0, SEEK_END); if (poswas < 0 || eofis < 0) { pd_error(x, "lseek failed"); if (fd >= 0) close (fd); return; } lseek(fd, poswas, SEEK_SET); framesinfile = (eofis - poswas) / (channels * bytespersamp); if (framesinfile > maxsize) { pd_error(x, "soundfiler_read: truncated to %d elements", maxsize); framesinfile = maxsize; } if (framesinfile > bytelimit / bytespersamp) framesinfile = bytelimit / bytespersamp; finalsize = framesinfile; for (i = 0; i < argc; i++) { int vecsize;
garray_resize(x->x_garrays[i], finalsize);
/* for sanity's sake let's clear the save-in-patch flag here */
garray_setsaveit(x->x_garrays[i], 0);
garray_getfloatarray(x->x_garrays[i], &vecsize, &x->x_vecs[i]);
/* if the resize failed, garray_resize reported the error */
if (vecsize != framesinfile)
{
pd_error(x, "resize failed");
if (fd >= 0) close (fd);
return;
}
}
}
if (!finalsize) finalsize = 0x7fffffff;
if (finalsize > bytelimit / bytespersamp)
finalsize = bytelimit / bytespersamp;
/* output number of bytes THEORETICALLY read */
/* due to the thread patch, we cannot output bytes ACTUALLY read */
/* and i know that's not nice, but it's preferable to clicks */
/* ydegoyon@free.fr */
outlet_float( x->x_obj.ob_outlet, finalsize );
x->x_channels = channels;
x->x_bytespersamp = bytespersamp;
x->x_bigendian = bigendian;
x->x_fd = fd;
x->x_finalsize = finalsize;
x->x_argc = argc;
/* we will use default thread attributes which set the scheduler policy to SCHED_OTHER */
/* thus, it will have a lower priority than PD itself */
if ( pthread_attr_init( &soundfiler_read_child_attr ) < 0 ) {
error( "soundfiler~ : could not set thread attributes" );
perror( "pthread_attr_init" );
}
if ( pthread_create( &x->x_readchild, &soundfiler_read_child_attr, soundfiler_doread, x ) < 0 ) {
error( "soundfiler~ : could not create thread for reading" );
perror( "pthread_create" );
return;
} else {
post ( "soundfiler : created child %lu", x->x_readchild );
}
return;
usage: pd_error(x, "usage: read [flags] filename tablename..."); post("flags: -skip <n> -nframes <n> -resize -maxsize <n> ..."); post("-raw <headerbytes> <channels> <bytespersamp> <endian (b, l, or n)>.");
}
/* this is broken out from soundfiler_write below so garray_write can
call it too... not done yet though. */
long soundfiler_dowrite(void *obj, t_canvas *canvas, int argc, t_atom *argv) { int headersize, bytespersamp, bigendian, endianness, swap, filetype, normalize, i, j, nchannels; long onset, nframes, itemsleft, maxsize = DEFMAXSIZE, itemswritten = 0; t_garray *garrays[MAXSFCHANS]; t_float *vecs[MAXSFCHANS]; char sampbuf[SAMPBUFSIZE]; int bufframes, nitems; int fd = -1; float normfactor, biggest = 0; t_symbol *filesym;
if (soundfiler_writeargparse(obj, &argc, &argv, &filesym, &filetype,
&bytespersamp, &swap, &bigendian, &normalize, &onset, &nframes))
goto usage;
nchannels = argc;
if (nchannels < 1 || nchannels > MAXSFCHANS)
goto usage;
for (i = 0; i < nchannels; i++)
{
int vecsize;
if (argv[i].a_type != A_SYMBOL)
goto usage;
if (!(garrays[i] =
(t_garray *)pd_findbyclass(argv[i].a_w.w_symbol, garray_class)))
{
pd_error(obj, "%s: no such table", argv[i].a_w.w_symbol->s_name);
goto fail;
}
else if (!garray_getfloatarray(garrays[i], &vecsize, &vecs[i]))
error("%s: bad template for tabwrite",
argv[i].a_w.w_symbol->s_name);
if (nframes > vecsize - onset)
nframes = vecsize - onset;
for (j = 0; j < vecsize; j++)
{
if (vecs[i][j] > biggest)
biggest = vecs[i][j];
else if (-vecs[i][j] > biggest)
biggest = -vecs[i][j];
}
}
if (nframes <= 0)
{
pd_error(obj, "soundfiler_write: no samples at onset %ld", onset);
goto fail;
}
if ((fd = create_soundfile(canvas, filesym->s_name, filetype,
nframes, bytespersamp, bigendian, nchannels,
swap)) < 0)
{
post("%s: %s\n", filesym->s_name, strerror(errno));
goto fail;
}
if (!normalize)
{
if ((bytespersamp != 4) && (biggest > 1))
{
post("%s: normalizing max amplitude %f to 1", filesym->s_name, biggest);
normalize = 1;
}
else post("%s: biggest amplitude = %f", filesym->s_name, biggest);
}
if (normalize)
normfactor = (biggest > 0 ? 32767./(32768. * biggest) : 1);
else normfactor = 1;
bufframes = SAMPBUFSIZE / (nchannels * bytespersamp);
for (itemswritten = 0; itemswritten < nframes; )
{
int thiswrite = nframes - itemswritten, nitems, nbytes;
thiswrite = (thiswrite > bufframes ? bufframes : thiswrite);
soundfile_xferout(argc, vecs, (unsigned char *)sampbuf, thiswrite,
onset, bytespersamp, bigendian, normfactor);
nbytes = write(fd, sampbuf, nchannels * bytespersamp * thiswrite);
if (nbytes < nchannels * bytespersamp * thiswrite)
{
post("%s: %s", filesym->s_name, strerror(errno));
if (nbytes > 0)
itemswritten += nbytes / (nchannels * bytespersamp);
break;
}
itemswritten += thiswrite;
onset += thiswrite;
}
if (fd >= 0)
{
soundfile_finishwrite(obj, filesym->s_name, fd,
filetype, nframes, itemswritten, nchannels * bytespersamp, swap);
close (fd);
}
return ((float)itemswritten);
usage: pd_error(obj, "usage: write [flags] filename tablename..."); post("flags: -skip <n> -nframes <n> -bytes <n> -wave -aiff -nextstep ..."); post("-big -little -normalize"); post("(defaults to a 16-bit wave file)."); fail: if (fd >= 0) close (fd); return (0); }
static void soundfiler_write(t_soundfiler *x, t_symbol *s, int argc, t_atom *argv) { long bozo = soundfiler_dowrite(x, x->x_canvas, argc, argv); outlet_float(x->x_obj.ob_outlet, (float)bozo); }
static void soundfiler_setup(void) { soundfiler_class = class_new(gensym("soundfiler"), (t_newmethod)soundfiler_new, 0, sizeof(t_soundfiler), 0, 0); class_addmethod(soundfiler_class, (t_method)soundfiler_read, gensym("read"), A_GIMME, 0); class_addmethod(soundfiler_class, (t_method)soundfiler_write, gensym("write"), A_GIMME, 0); }
/************************* readsf object ******************************/
/* READSF uses the Posix threads package; for the moment we're Linux only although this should be portable to the other platforms.
Each instance of readsf~ owns a "child" thread for doing the UNIX (NT?) file reading. The parent thread signals the child each time: (1) a file wants opening or closing; (2) we've eaten another 1/16 of the shared buffer (so that the child thread should check if it's time to read some more.) The child signals the parent whenever a read has completed. Signalling is done by setting "conditions" and putting data in mutex-controlled common areas. */
#define MAXBYTESPERSAMPLE 4 #define MAXVECSIZE 128
#define READSIZE 65536 #define WRITESIZE 65536 #define DEFBUFPERCHAN 262144 #define MINBUFSIZE (4 * READSIZE) #define MAXBUFSIZE 16777216 /* arbitrary; just don't want to hang malloc */
#define REQUEST_NOTHING 0 #define REQUEST_OPEN 1 #define REQUEST_CLOSE 2 #define REQUEST_QUIT 3 #define REQUEST_BUSY 4
#define STATE_IDLE 0 #define STATE_STARTUP 1 #define STATE_STREAM 2
static t_class *readsf_class;
typedef struct _readsf
{
t_object x_obj;
t_canvas *x_canvas;
t_clock *x_clock;
char *x_buf; /* soundfile buffer */
int x_bufsize; /* buffer size in bytes */
int x_noutlets; /* number of audio outlets */
t_sample *(x_outvec[MAXSFCHANS]); /* audio vectors */
int x_vecsize; /* vector size for transfers */
t_outlet *x_bangout; /* bang-on-done outlet */
int x_state; /* opened, running, or idle */
/* parameters to communicate with subthread */
int x_requestcode; /* pending request from parent to I/O thread */
char *x_filename; /* file to open (string is permanently allocated) */
int x_fileerror; /* slot for "errno" return */
int x_skipheaderbytes; /* size of header we'll skip */
int x_bytespersample; /* bytes per sample (2 or 3) */
int x_bigendian; /* true if file is big-endian */
int x_sfchannels; /* number of channels in soundfile */
long x_onsetframes; /* number of sample frames to skip */
long x_bytelimit; /* max number of data bytes to read */
int x_fd; /* filedesc */
int x_fifosize; /* buffer size appropriately rounded down */
int x_fifohead; /* index of next byte to get from file */
int x_fifotail; /* index of next byte the ugen will read */
int x_eof; /* true if fifohead has stopped changing */
int x_sigcountdown; /* counter for signalling child for more data */
int x_sigperiod; /* number of ticks per signal */
int x_filetype; /* writesf~ only; type of file to create */
int x_itemswritten; /* writesf~ only; items writen */
int x_swap; /* writesf~ only; true if byte swapping */
float x_f; /* writesf~ only; scalar for signal inlet */
pthread_mutex_t x_mutex;
pthread_cond_t x_requestcondition;
pthread_cond_t x_answercondition;
pthread_t x_childthread;
} t_readsf;
/************** the child thread which performs file I/O ***********/
#if 0 static void pute(char *s) /* debug routine */ { write(2, s, strlen(s)); } #else #define pute(x) #endif
#if 1 #define sfread_cond_wait pthread_cond_wait #define sfread_cond_signal pthread_cond_signal #else #include <sys/time.h> /* debugging version... */ #include <sys/types.h> static void readsf_fakewait(pthread_mutex_t *b) { struct timeval timout; timout.tv_sec = 0; timout.tv_usec = 1000000; pthread_mutex_unlock(b); select(0, 0, 0, 0, &timout); pthread_mutex_lock(b); }
void readsf_banana( void) { struct timeval timout; timout.tv_sec = 0; timout.tv_usec = 200000; pute("banana1\n"); select(0, 0, 0, 0, &timout); pute("banana2\n"); }
#define sfread_cond_wait(a,b) readsf_fakewait(b) #define sfread_cond_signal(a) #endif
static void *readsf_child_main(void *zz)
{
t_readsf *x = zz;
pute("1\n");
pthread_mutex_lock(&x->x_mutex);
while (1)
{
int fd, fifohead;
char *buf;
pute("0\n");
if (x->x_requestcode == REQUEST_NOTHING)
{
pute("wait 2\n");
sfread_cond_signal(&x->x_answercondition);
sfread_cond_wait(&x->x_requestcondition, &x->x_mutex);
pute("3\n");
}
else if (x->x_requestcode == REQUEST_OPEN)
{
char boo[80];
int sysrtn, wantbytes;
/* copy file stuff out of the data structure so we can
relinquish the mutex while we're in open_soundfile(). */
long onsetframes = x->x_onsetframes;
long bytelimit = 0x7fffffff;
int skipheaderbytes = x->x_skipheaderbytes;
int bytespersample = x->x_bytespersample;
int sfchannels = x->x_sfchannels;
int bigendian = x->x_bigendian;
char *filename = x->x_filename;
char *dirname = canvas_getdir(x->x_canvas)->s_name;
/* alter the request code so that an ensuing "open" will get
noticed. */
pute("4\n");
x->x_requestcode = REQUEST_BUSY;
x->x_fileerror = 0;
/* if there's already a file open, close it */
if (x->x_fd >= 0)
{
fd = x->x_fd;
pthread_mutex_unlock(&x->x_mutex);
close (fd);
pthread_mutex_lock(&x->x_mutex);
x->x_fd = -1;
if (x->x_requestcode != REQUEST_BUSY)
goto lost;
}
/* open the soundfile with the mutex unlocked */
pthread_mutex_unlock(&x->x_mutex);
fd = open_soundfile(dirname, filename,
skipheaderbytes, &bytespersample, &bigendian,
&sfchannels, &bytelimit, onsetframes);
pthread_mutex_lock(&x->x_mutex);
pute("5\n");
/* copy back into the instance structure. */
x->x_bytespersample = bytespersample;
x->x_sfchannels = sfchannels;
x->x_bigendian = bigendian;
x->x_fd = fd;
x->x_bytelimit = bytelimit;
if (fd < 0)
{
x->x_fileerror = errno;
x->x_eof = 1;
pute("open failed\n");
pute(filename);
pute(dirname);
goto lost;
}
/* check if another request has been made; if so, field it */
if (x->x_requestcode != REQUEST_BUSY)
goto lost;
pute("6\n");
x->x_fifohead = 0;
/* set fifosize from bufsize. fifosize must be a
multiple of the number of bytes eaten for each DSP
tick. We pessimistically assume MAXVECSIZE samples
per tick since that could change. There could be a
problem here if the vector size increases while a
soundfile is being played... */
x->x_fifosize = x->x_bufsize - (x->x_bufsize %
(x->x_bytespersample * x->x_sfchannels * MAXVECSIZE));
/* arrange for the "request" condition to be signalled 16
times per buffer */
sprintf(boo, "fifosize %d\n",
x->x_fifosize);
pute(boo);
x->x_sigcountdown = x->x_sigperiod =
(x->x_fifosize /
(16 * x->x_bytespersample * x->x_sfchannels *
x->x_vecsize));
/* in a loop, wait for the fifo to get hungry and feed it */
while (x->x_requestcode == REQUEST_BUSY)
{
int fifosize = x->x_fifosize;
pute("77\n");
if (x->x_eof)
break;
if (x->x_fifohead >= x->x_fifotail)
{
/* if the head is >= the tail, we can immediately read
to the end of the fifo. Unless, that is, we would
read all the way to the end of the buffer and the
"tail" is zero; this would fill the buffer completely
which isn't allowed because you can't tell a completely
full buffer from an empty one. */
if (x->x_fifotail || (fifosize - x->x_fifohead > READSIZE))
{
wantbytes = fifosize - x->x_fifohead;
if (wantbytes > READSIZE)
wantbytes = READSIZE;
if (wantbytes > x->x_bytelimit)
wantbytes = x->x_bytelimit;
sprintf(boo, "head %d, tail %d, size %d\n",
x->x_fifohead, x->x_fifotail, wantbytes);
pute(boo);
}
else
{
pute("wait 7a ...\n");
sfread_cond_signal(&x->x_answercondition);
pute("signalled\n");
sfread_cond_wait(&x->x_requestcondition,
&x->x_mutex);
pute("7a done\n");
continue;
}
}
else
{
/* otherwise check if there are at least READSIZE
bytes to read. If not, wait and loop back. */
wantbytes = x->x_fifotail - x->x_fifohead - 1;
if (wantbytes < READSIZE)
{
pute("wait 7...\n");
sfread_cond_signal(&x->x_answercondition);
sfread_cond_wait(&x->x_requestcondition,
&x->x_mutex);
pute("7 done\n");
continue;
}
else wantbytes = READSIZE;
}
pute("8\n");
fd = x->x_fd;
buf = x->x_buf;
fifohead = x->x_fifohead;
pthread_mutex_unlock(&x->x_mutex);
sysrtn = read(fd, buf + fifohead, wantbytes);
pthread_mutex_lock(&x->x_mutex);
if (x->x_requestcode != REQUEST_BUSY)
break;
if (sysrtn < 0)
{
pute("fileerror\n");
x->x_fileerror = errno;
break;
}
else if (sysrtn == 0)
{
x->x_eof = 1;
break;
}
else
{
x->x_fifohead += sysrtn;
x->x_bytelimit -= sysrtn;
if (x->x_bytelimit <= 0)
{
x->x_eof = 1;
break;
}
if (x->x_fifohead == fifosize)
x->x_fifohead = 0;
}
sprintf(boo, "after: head %d, tail %d\n",
x->x_fifohead, x->x_fifotail);
pute(boo);
/* signal parent in case it's waiting for data */
sfread_cond_signal(&x->x_answercondition);
}
lost:
if (x->x_requestcode == REQUEST_BUSY)
x->x_requestcode = REQUEST_NOTHING;
/* fell out of read loop: close file if necessary,
set EOF and signal once more */
if (x->x_fd >= 0)
{
fd = x->x_fd;
pthread_mutex_unlock(&x->x_mutex);
close (fd);
pthread_mutex_lock(&x->x_mutex);
x->x_fd = -1;
}
sfread_cond_signal(&x->x_answercondition);
}
else if (x->x_requestcode == REQUEST_CLOSE)
{
if (x->x_fd >= 0)
{
fd = x->x_fd;
pthread_mutex_unlock(&x->x_mutex);
close (fd);
pthread_mutex_lock(&x->x_mutex);
x->x_fd = -1;
}
if (x->x_requestcode == REQUEST_CLOSE)
x->x_requestcode = REQUEST_NOTHING;
sfread_cond_signal(&x->x_answercondition);
}
else if (x->x_requestcode == REQUEST_QUIT)
{
if (x->x_fd >= 0)
{
fd = x->x_fd;
pthread_mutex_unlock(&x->x_mutex);
close (fd);
pthread_mutex_lock(&x->x_mutex);
x->x_fd = -1;
}
x->x_requestcode = REQUEST_NOTHING;
sfread_cond_signal(&x->x_answercondition);
break;
}
else
{
pute("13\n");
}
}
pute("thread exit\n");
pthread_mutex_unlock(&x->x_mutex);
return (0);
}
/******** the object proper runs in the calling (parent) thread ****/
static void readsf_tick(t_readsf *x);
static void *readsf_new(t_floatarg fnchannels, t_floatarg fbufsize) { t_readsf *x; int nchannels = fnchannels, bufsize = fbufsize, i; char *buf;
if (nchannels < 1)
nchannels = 1;
else if (nchannels > MAXSFCHANS)
nchannels = MAXSFCHANS;
if (bufsize <= 0) bufsize = DEFBUFPERCHAN * nchannels;
else if (bufsize < MINBUFSIZE)
bufsize = MINBUFSIZE;
else if (bufsize > MAXBUFSIZE)
bufsize = MAXBUFSIZE;
buf = getbytes(bufsize);
if (!buf) return (0);
x = (t_readsf *)pd_new(readsf_class);
for (i = 0; i < nchannels; i++)
outlet_new(&x->x_obj, gensym("signal"));
x->x_noutlets = nchannels;
x->x_bangout = outlet_new(&x->x_obj, &s_bang);
pthread_mutex_init(&x->x_mutex, 0);
pthread_cond_init(&x->x_requestcondition, 0);
pthread_cond_init(&x->x_answercondition, 0);
x->x_vecsize = MAXVECSIZE;
x->x_state = STATE_IDLE;
x->x_clock = clock_new(x, (t_method)readsf_tick);
x->x_canvas = canvas_getcurrent();
x->x_bytespersample = 2;
x->x_sfchannels = 1;
x->x_fd = -1;
x->x_buf = buf;
x->x_bufsize = bufsize;
x->x_fifosize = x->x_fifohead = x->x_fifotail = x->x_requestcode = 0;
pthread_create(&x->x_childthread, 0, readsf_child_main, x);
return (x);
}
static void readsf_tick(t_readsf *x) { outlet_bang(x->x_bangout); }
static t_int *readsf_perform(t_int *w) { t_readsf *x = (t_readsf *)(w[1]); int vecsize = x->x_vecsize, noutlets = x->x_noutlets, i, j, bytespersample = x->x_bytespersample, bigendian = x->x_bigendian; float *fp; if (x->x_state == STATE_STREAM) { int wantbytes, nchannels, sfchannels = x->x_sfchannels; pthread_mutex_lock(&x->x_mutex); wantbytes = sfchannels * vecsize * bytespersample; while ( !x->x_eof && x->x_fifohead >= x->x_fifotail && x->x_fifohead < x->x_fifotail + wantbytes-1) { pute("wait...\n"); sfread_cond_signal(&x->x_requestcondition); sfread_cond_wait(&x->x_answercondition, &x->x_mutex); pute("done\n"); } if (x->x_eof && x->x_fifohead >= x->x_fifotail && x->x_fifohead < x->x_fifotail + wantbytes-1) { if (x->x_fileerror) { pd_error(x, "dsp: %s: %s", x->x_filename, (x->x_fileerror == EIO ? "unknown or bad header format" : strerror(x->x_fileerror))); } clock_delay(x->x_clock, 0); x->x_state = STATE_IDLE; sfread_cond_signal(&x->x_requestcondition); pthread_mutex_unlock(&x->x_mutex); goto idle; }
soundfile_xferin(sfchannels, noutlets, x->x_outvec, 0,
(unsigned char *)(x->x_buf + x->x_fifotail), vecsize,
bytespersample, bigendian);
x->x_fifotail += wantbytes; if (x->x_fifotail >= x->x_fifosize) x->x_fifotail = 0; if ((--x->x_sigcountdown) <= 0) { sfread_cond_signal(&x->x_requestcondition); x->x_sigcountdown = x->x_sigperiod; } pthread_mutex_unlock(&x->x_mutex); } else { idle: for (i = 0; i < noutlets; i++) for (j = vecsize, fp = x->x_outvec[i]; j--; ) *fp++ = 0; } return (w+2); }
static void readsf_start(t_readsf *x) { /* start making output. If we're in the "startup" state change to the "running" state. */ if (x->x_state == STATE_STARTUP) x->x_state = STATE_STREAM; else pd_error(x, "readsf: start requested with no prior 'open'"); }
static void readsf_stop(t_readsf *x) { /* LATER rethink whether you need the mutex just to set a variable? */ pthread_mutex_lock(&x->x_mutex); x->x_state = STATE_IDLE; x->x_requestcode = REQUEST_CLOSE; sfread_cond_signal(&x->x_requestcondition); pthread_mutex_unlock(&x->x_mutex); }
static void readsf_float(t_readsf *x, t_floatarg f) { if (f != 0) readsf_start(x); else readsf_stop(x); }
/* open method. Called as:
open filename [skipframes headersize channels bytespersamp endianness]
(if headersize is zero, header is taken to be automatically
detected; thus, use the special "-1" to mean a truly headerless file.)
*/
static void readsf_open(t_readsf *x, t_symbol *s, int argc, t_atom *argv) { t_symbol *filesym = atom_getsymbolarg(0, argc, argv); t_float onsetframes = atom_getfloatarg(1, argc, argv); t_float headerbytes = atom_getfloatarg(2, argc, argv); t_float channels = atom_getfloatarg(3, argc, argv); t_float bytespersamp = atom_getfloatarg(4, argc, argv); t_symbol *endian = atom_getsymbolarg(5, argc, argv); if (!*filesym->s_name) return; pthread_mutex_lock(&x->x_mutex); x->x_requestcode = REQUEST_OPEN; x->x_filename = filesym->s_name; x->x_fifotail = 0; x->x_fifohead = 0; if (*endian->s_name == 'b') x->x_bigendian = 1; else if (*endian->s_name == 'l') x->x_bigendian = 0; else if (*endian->s_name) pd_error(x, "endianness neither 'b' nor 'l'"); else x->x_bigendian = garray_ambigendian(); x->x_onsetframes = (onsetframes > 0 ? onsetframes : 0); x->x_skipheaderbytes = (headerbytes > 0 ? headerbytes : (headerbytes == 0 ? -1 : 0)); x->x_sfchannels = (channels >= 1 ? channels : 1); x->x_bytespersample = (bytespersamp > 2 ? bytespersamp : 2); x->x_eof = 0; x->x_fileerror = 0; x->x_state = STATE_STARTUP; sfread_cond_signal(&x->x_requestcondition); pthread_mutex_unlock(&x->x_mutex); }
static void readsf_dsp(t_readsf *x, t_signal **sp) { int i, noutlets = x->x_noutlets; pthread_mutex_lock(&x->x_mutex); x->x_vecsize = sp[0]->s_n;
x->x_sigperiod = (x->x_fifosize /
(x->x_bytespersample * x->x_sfchannels * x->x_vecsize));
for (i = 0; i < noutlets; i++)
x->x_outvec[i] = sp[i]->s_vec;
pthread_mutex_unlock(&x->x_mutex);
dsp_add(readsf_perform, 1, x);
}
static void readsf_print(t_readsf *x) { post("state %d", x->x_state); post("fifo head %d", x->x_fifohead); post("fifo tail %d", x->x_fifotail); post("fifo size %d", x->x_fifosize); post("fd %d", x->x_fd); post("eof %d", x->x_eof); }
static void readsf_free(t_readsf *x) { /* request QUIT and wait for acknowledge */ void *threadrtn; pthread_mutex_lock(&x->x_mutex); x->x_requestcode = REQUEST_QUIT; post("stopping readsf thread..."); sfread_cond_signal(&x->x_requestcondition); while (x->x_requestcode != REQUEST_NOTHING) { post("signalling..."); sfread_cond_signal(&x->x_requestcondition); sfread_cond_wait(&x->x_answercondition, &x->x_mutex); } pthread_mutex_unlock(&x->x_mutex); if (pthread_join(x->x_childthread, &threadrtn)) error("readsf_free: join failed"); post("... done.");
pthread_cond_destroy(&x->x_requestcondition);
pthread_cond_destroy(&x->x_answercondition);
pthread_mutex_destroy(&x->x_mutex);
freebytes(x->x_buf, x->x_bufsize);
clock_free(x->x_clock);
}
static void readsf_setup(void) { readsf_class = class_new(gensym("readsf~"), (t_newmethod)readsf_new, (t_method)readsf_free, sizeof(t_readsf), 0, A_DEFFLOAT, A_DEFFLOAT, 0); class_addfloat(readsf_class, (t_method)readsf_float); class_addmethod(readsf_class, (t_method)readsf_start, gensym("start"), 0); class_addmethod(readsf_class, (t_method)readsf_stop, gensym("stop"), 0); class_addmethod(readsf_class, (t_method)readsf_dsp, gensym("dsp"), 0); class_addmethod(readsf_class, (t_method)readsf_open, gensym("open"), A_GIMME, 0); class_addmethod(readsf_class, (t_method)readsf_print, gensym("print"), 0); }
/******************************* writesf *******************/
static t_class *writesf_class;
#define t_writesf t_readsf /* just re-use the structure */
/************** the child thread which performs file I/O ***********/
static void *writesf_child_main(void *zz)
{
t_writesf *x = zz;
pute("1\n");
pthread_mutex_lock(&x->x_mutex);
while (1)
{
pute("0\n");
if (x->x_requestcode == REQUEST_NOTHING)
{
pute("wait 2\n");
sfread_cond_signal(&x->x_answercondition);
sfread_cond_wait(&x->x_requestcondition, &x->x_mutex);
pute("3\n");
}
else if (x->x_requestcode == REQUEST_OPEN)
{
char boo[80];
int fd, sysrtn, writebytes;
/* copy file stuff out of the data structure so we can
relinquish the mutex while we're in open_soundfile(). */
long onsetframes = x->x_onsetframes;
long bytelimit = 0x7fffffff;
int skipheaderbytes = x->x_skipheaderbytes;
int bytespersample = x->x_bytespersample;
int sfchannels = x->x_sfchannels;
int bigendian = x->x_bigendian;
int filetype = x->x_filetype;
char *filename = x->x_filename;
t_canvas *canvas = x->x_canvas;
/* alter the request code so that an ensuing "open" will get
noticed. */
pute("4\n");
x->x_requestcode = REQUEST_BUSY;
x->x_fileerror = 0;
/* if there's already a file open, close it */
if (x->x_fd >= 0)
{
pthread_mutex_unlock(&x->x_mutex);
close (x->x_fd);
pthread_mutex_lock(&x->x_mutex);
x->x_fd = -1;
if (x->x_requestcode != REQUEST_BUSY)
continue;
}
/* open the soundfile with the mutex unlocked */
pthread_mutex_unlock(&x->x_mutex);
fd = create_soundfile(canvas, filename, filetype, 0,
bytespersample, bigendian, sfchannels,
garray_ambigendian() != bigendian);
pthread_mutex_lock(&x->x_mutex);
pute("5\n");
if (fd < 0)
{
x->x_fd = -1;
x->x_eof = 1;
x->x_fileerror = errno;
pute("open failed\n");
pute(filename);
x->x_requestcode = REQUEST_NOTHING;
continue;
}
/* check if another request has been made; if so, field it */
if (x->x_requestcode != REQUEST_BUSY)
continue;
pute("6\n");
x->x_fd = fd;
x->x_fifotail = 0;
x->x_itemswritten = 0;
x->x_swap = garray_ambigendian() != bigendian;
/* in a loop, wait for the fifo to have data and write it
to disk */
while (x->x_requestcode == REQUEST_BUSY ||
(x->x_requestcode == REQUEST_CLOSE &&
x->x_fifohead != x->x_fifotail))
{
int fifosize = x->x_fifosize, fifotail;
char *buf = x->x_buf;
pute("77\n");
/* if the head is < the tail, we can immediately write
from tail to end of fifo to disk; otherwise we hold off
writing until there are at least WRITESIZE bytes in the
buffer */
if (x->x_fifohead < x->x_fifotail ||
x->x_fifohead >= x->x_fifotail + WRITESIZE
|| (x->x_requestcode == REQUEST_CLOSE &&
x->x_fifohead != x->x_fifotail))
{
writebytes = (x->x_fifohead < x->x_fifotail ?
fifosize : x->x_fifohead) - x->x_fifotail;
if (writebytes > READSIZE)
writebytes = READSIZE;
}
else
{
pute("wait 7a ...\n");
sfread_cond_signal(&x->x_answercondition);
pute("signalled\n");
sfread_cond_wait(&x->x_requestcondition,
&x->x_mutex);
pute("7a done\n");
continue;
}
pute("8\n");
fifotail = x->x_fifotail;
fd = x->x_fd;
pthread_mutex_unlock(&x->x_mutex);
sysrtn = write(fd, buf + fifotail, writebytes);
pthread_mutex_lock(&x->x_mutex);
if (x->x_requestcode != REQUEST_BUSY &&
x->x_requestcode != REQUEST_CLOSE)
break;
if (sysrtn < writebytes)
{
pute("fileerror\n");
x->x_fileerror = errno;
break;
}
else
{
x->x_fifotail += sysrtn;
if (x->x_fifotail == fifosize)
x->x_fifotail = 0;
}
x->x_itemswritten +=
sysrtn / (x->x_bytespersample * x->x_sfchannels);
sprintf(boo, "after: head %d, tail %d\n",
x->x_fifohead, x->x_fifotail);
pute(boo);
/* signal parent in case it's waiting for data */
sfread_cond_signal(&x->x_answercondition);
}
}
else if (x->x_requestcode == REQUEST_CLOSE ||
x->x_requestcode == REQUEST_QUIT)
{
int quit = (x->x_requestcode == REQUEST_QUIT);
if (x->x_fd >= 0)
{
int bytesperframe = x->x_bytespersample * x->x_sfchannels;
int bigendian = x->x_bigendian;
char *filename = x->x_filename;
int fd = x->x_fd;
int filetype = x->x_filetype;
int itemswritten = x->x_itemswritten;
int swap = x->x_swap;
pthread_mutex_unlock(&x->x_mutex);
soundfile_finishwrite(x, filename, fd,
filetype, 0x7fffffff, itemswritten,
bytesperframe, swap);
close (fd);
pthread_mutex_lock(&x->x_mutex);
x->x_fd = -1;
}
x->x_requestcode = REQUEST_NOTHING;
sfread_cond_signal(&x->x_answercondition);
if (quit)
break;
}
else
{
pute("13\n");
}
}
pute("thread exit\n");
pthread_mutex_unlock(&x->x_mutex);
return (0);
}
/******** the object proper runs in the calling (parent) thread ****/
static void writesf_tick(t_writesf *x);
static void *writesf_new(t_floatarg fnchannels, t_floatarg fbufsize) { t_writesf *x; int nchannels = fnchannels, bufsize = fbufsize, i; char *buf;
if (nchannels < 1)
nchannels = 1;
else if (nchannels > MAXSFCHANS)
nchannels = MAXSFCHANS;
post("nchannels %d", nchannels);
if (bufsize <= 0) bufsize = DEFBUFPERCHAN * nchannels;
else if (bufsize < MINBUFSIZE)
bufsize = MINBUFSIZE;
else if (bufsize > MAXBUFSIZE)
bufsize = MAXBUFSIZE;
buf = getbytes(bufsize);
if (!buf) return (0);
x = (t_writesf *)pd_new(writesf_class);
for (i = 1; i < nchannels; i++)
inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_signal, &s_signal);
x->x_f = 0;
x->x_sfchannels = nchannels;
pthread_mutex_init(&x->x_mutex, 0);
pthread_cond_init(&x->x_requestcondition, 0);
pthread_cond_init(&x->x_answercondition, 0);
x->x_vecsize = MAXVECSIZE;
x->x_state = STATE_IDLE;
x->x_clock = 0; /* no callback needed here */
x->x_canvas = canvas_getcurrent();
x->x_bytespersample = 2;
x->x_fd = -1;
x->x_buf = buf;
x->x_bufsize = bufsize;
x->x_fifosize = x->x_fifohead = x->x_fifotail = x->x_requestcode = 0;
pthread_create(&x->x_childthread, 0, writesf_child_main, x);
return (x);
}
static t_int *writesf_perform(t_int *w) { t_writesf *x = (t_writesf *)(w[1]); int vecsize = x->x_vecsize, sfchannels = x->x_sfchannels, i, j, bytespersample = x->x_bytespersample, bigendian = x->x_bigendian; float *fp; if (x->x_state == STATE_STREAM) { int wantbytes; pthread_mutex_lock(&x->x_mutex); wantbytes = sfchannels * vecsize * bytespersample; while (x->x_fifotail > x->x_fifohead && x->x_fifotail < x->x_fifohead + wantbytes + 1) { pute("wait...\n"); sfread_cond_signal(&x->x_requestcondition); sfread_cond_wait(&x->x_answercondition, &x->x_mutex); pute("done\n"); }
soundfile_xferout(sfchannels, x->x_outvec,
(unsigned char *)(x->x_buf + x->x_fifohead), vecsize, 0,
bytespersample, bigendian, 1.);
x->x_fifohead += wantbytes; if (x->x_fifohead >= x->x_fifosize) x->x_fifohead = 0; if ((--x->x_sigcountdown) <= 0) { sfread_cond_signal(&x->x_requestcondition); x->x_sigcountdown = x->x_sigperiod; } pthread_mutex_unlock(&x->x_mutex); } return (w+2); }
static void writesf_start(t_writesf *x) { /* start making output. If we're in the "startup" state change to the "running" state. */ if (x->x_state == STATE_STARTUP) x->x_state = STATE_STREAM; else pd_error(x, "writesf: start requested with no prior 'open'"); }
static void writesf_stop(t_writesf *x) { /* LATER rethink whether you need the mutex just to set a Svariable? */ pthread_mutex_lock(&x->x_mutex); x->x_state = STATE_IDLE; x->x_requestcode = REQUEST_CLOSE; sfread_cond_signal(&x->x_requestcondition); pthread_mutex_unlock(&x->x_mutex); }
/* open method. Called as: open [args] filename with args as in
soundfiler_writeargparse().
*/
static void writesf_open(t_writesf *x, t_symbol *s, int argc, t_atom *argv) { t_symbol *filesym; int filetype, bytespersamp, swap, bigendian, normalize; long onset, nframes; if (soundfiler_writeargparse(x, &argc, &argv, &filesym, &filetype, &bytespersamp, &swap, &bigendian, &normalize, &onset, &nframes)) { pd_error(x, "writesf~: usage: open [-bytes [234]] [-wave,-nextstep,-aiff] ..."); post("... [-big,-little] filename"); } if (normalize || onset || (nframes != 0x7fffffff)) pd_error(x, "normalize/onset/nframes argument to writesf~: ignored"); if (argc) pd_error(x, "extra argument(s) to writesf~: ignored"); pthread_mutex_lock(&x->x_mutex); x->x_bytespersample = bytespersamp; x->x_swap = swap; x->x_bigendian = bigendian; x->x_filename = filesym->s_name; x->x_filetype = filetype; x->x_itemswritten = 0; x->x_requestcode = REQUEST_OPEN; x->x_fifotail = 0; x->x_fifohead = 0; x->x_eof = 0; x->x_fileerror = 0; x->x_state = STATE_STARTUP; x->x_bytespersample = (bytespersamp > 2 ? bytespersamp : 2); /* set fifosize from bufsize. fifosize must be a multiple of the number of bytes eaten for each DSP tick. */ x->x_fifosize = x->x_bufsize - (x->x_bufsize % (x->x_bytespersample * x->x_sfchannels * MAXVECSIZE)); /* arrange for the "request" condition to be signalled 16 times per buffer */ x->x_sigcountdown = x->x_sigperiod = (x->x_fifosize / (16 * x->x_bytespersample * x->x_sfchannels * x->x_vecsize)); sfread_cond_signal(&x->x_requestcondition); pthread_mutex_unlock(&x->x_mutex); }
static void writesf_dsp(t_writesf *x, t_signal **sp) { int i, ninlets = x->x_sfchannels; pthread_mutex_lock(&x->x_mutex); x->x_vecsize = sp[0]->s_n;
x->x_sigperiod = (x->x_fifosize /
(x->x_bytespersample * ninlets * x->x_vecsize));
for (i = 0; i < ninlets; i++)
x->x_outvec[i] = sp[i]->s_vec;
pthread_mutex_unlock(&x->x_mutex);
dsp_add(writesf_perform, 1, x);
}
static void writesf_print(t_writesf *x) { post("state %d", x->x_state); post("fifo head %d", x->x_fifohead); post("fifo tail %d", x->x_fifotail); post("fifo size %d", x->x_fifosize); post("fd %d", x->x_fd); post("eof %d", x->x_eof); }
static void writesf_free(t_writesf *x) { /* request QUIT and wait for acknowledge */ void *threadrtn; pthread_mutex_lock(&x->x_mutex); x->x_requestcode = REQUEST_QUIT; /* post("stopping writesf thread..."); */ sfread_cond_signal(&x->x_requestcondition); while (x->x_requestcode != REQUEST_NOTHING) { /* post("signalling..."); */ sfread_cond_signal(&x->x_requestcondition); sfread_cond_wait(&x->x_answercondition, &x->x_mutex); } pthread_mutex_unlock(&x->x_mutex); if (pthread_join(x->x_childthread, &threadrtn)) error("writesf_free: join failed"); /* post("... done."); */
pthread_cond_destroy(&x->x_requestcondition);
pthread_cond_destroy(&x->x_answercondition);
pthread_mutex_destroy(&x->x_mutex);
freebytes(x->x_buf, x->x_bufsize);
}
static void writesf_setup(void) { writesf_class = class_new(gensym("writesf~"), (t_newmethod)writesf_new, (t_method)writesf_free, sizeof(t_writesf), 0, A_DEFFLOAT, A_DEFFLOAT, 0); class_addmethod(writesf_class, (t_method)writesf_start, gensym("start"), 0); class_addmethod(writesf_class, (t_method)writesf_stop, gensym("stop"), 0); class_addmethod(writesf_class, (t_method)writesf_dsp, gensym("dsp"), 0); class_addmethod(writesf_class, (t_method)writesf_open, gensym("open"), A_GIMME, 0); class_addmethod(writesf_class, (t_method)writesf_print, gensym("print"), 0); CLASS_MAINSIGNALIN(writesf_class, t_writesf, x_f); }
/* ------------------------ global setup routine ------------------------- */
void d_soundfile_setup(void) { soundfiler_setup(); readsf_setup(); writesf_setup(); }
/* Copyright (c) 1997-1999 Miller Puckette.
- For information on usage and redistribution, and for a DISCLAIMER OF ALL
- WARRANTIES, see the file, "LICENSE.txt," in this distribution. */
/* Pd side of the Pd/Pd-gui interface. */
#include "m_pd.h" #include "s_stuff.h" #include "m_imp.h" #ifdef UNIX #include <unistd.h> #include <sys/socket.h> #include <sys/mman.h> #include <netinet/in.h> #include <netinet/tcp.h> #include <netdb.h> #include <stdlib.h> #include <sys/time.h> #endif #ifdef HAVE_BSTRING_H #include <bstring.h> #endif #ifdef NT #include <io.h> #include <fcntl.h> #include <process.h> #include <winsock.h> typedef int pid_t; #define EADDRINUSE WSAEADDRINUSE #endif #include <stdarg.h> #include <signal.h> #include <pthread.h> #include <fcntl.h> #include <errno.h> #include <string.h> #include <stdio.h>
#ifdef MACOSX #include <sys/types.h> #include <sys/stat.h> #else #include <stdlib.h> #endif
#define DEBUG_MESSUP 1 /* messages up from pd to pd-gui */ #define DEBUG_MESSDOWN 2 /* messages down from pd-gui to pd */
extern char pd_version[];
typedef struct _fdpoll { int fdp_fd; t_fdpollfn fdp_fn; void *fdp_ptr; } t_fdpoll;
#define INBUFSIZE 4096
struct _socketreceiver { char *sr_inbuf; int sr_inhead; int sr_intail; void *sr_owner; int sr_udp; t_socketnotifier sr_notifier; t_socketreceivefn sr_socketreceivefn; };
static int sys_nfdpoll; static t_fdpoll *sys_fdpoll; static int sys_maxfd; static int sys_guisock;
static t_binbuf *inbinbuf; static t_socketreceiver *sys_socketreceiver; extern int sys_addhist(int phase);
/* thread patch by ydegoyon@free.fr */ #define UPDATER_POLLING_DELAY 10000000 /* polling delay in nano seconds ( 10ms ) */
typedef struct _guichunk { char *s_chunk; struct _guichunk *p_next; } t_guichunk; static t_guichunk *sys_chunkslist=NULL; static t_guichunk *sys_nextchunk=NULL;
static pthread_t sys_updater; // = -1; /* thread id for the update child */
static pthread_attr_t sys_updater_attr; /* thread attributes for update child */
static t_int sys_message_counter=0; /* counter of all pending messages */ static t_int sys_message_size=0; /* size of all pending messages */
static pthread_mutex_t sys_update_mutex; /* end thread patch by ydegoyon@free.fr */
void sys_sockerror(char *s) { #ifdef NT int err = WSAGetLastError(); if (err == 10054) return; else if (err == 10044) { fprintf(stderr, "Warning: you might not have TCP/IP "networking" turned on\n"); fprintf(stderr, "which is needed for Pd to talk to its GUI layer.\n"); } #endif #ifdef UNIX int err = errno; #endif fprintf(stderr, "%s: %s (%d)\n", s, strerror(err), err); }
/* get "real time" in seconds; take the
first time we get called as a reference time of zero. */
double sys_getrealtime(void) { #ifdef UNIX static struct timeval then; struct timeval now; gettimeofday(&now, 0); if (then.tv_sec == 0 && then.tv_usec == 0) then = now; return ((now.tv_sec - then.tv_sec) + (1./1000000.) * (now.tv_usec - then.tv_usec)); #endif #ifdef MSW LARGE_INTEGER now; QueryPerformanceCounter(&now); if (nt_freq == 0) sys_initntclock(); return (((double)(now.QuadPart - nt_inittime.QuadPart)) / nt_freq); #endif }
#ifdef __linux
#if defined(_POSIX_PRIORITY_SCHEDULING) || defined(_POSIX_MEMLOCK) #include <sched.h> #endif
void sys_set_priority(int higher) { #ifdef _POSIX_PRIORITY_SCHEDULING struct sched_param par; int p1 ,p2, p3; p1 = sched_get_priority_min(SCHED_FIFO); p2 = sched_get_priority_max(SCHED_FIFO); p3 = (higher ? p2 - 1 : p2 - 3); par.sched_priority = p3; if (sched_setscheduler(0,SCHED_FIFO,&par) != -1) fprintf(stderr, "priority %d scheduling enabled.\n", p3); #endif
#ifdef _POSIX_MEMLOCK if (mlockall(MCL_FUTURE) != -1) fprintf(stderr, "memory locking enabled.\n"); #endif
}
#endif /* __linux */
void sys_addpollfn(int fd, t_fdpollfn fn, void *ptr) { int nfd = sys_nfdpoll; int size = nfd * sizeof(t_fdpoll); t_fdpoll *fp; sys_fdpoll = (t_fdpoll *)t_resizebytes(sys_fdpoll, size, size + sizeof(t_fdpoll)); fp = sys_fdpoll + nfd; fp->fdp_fd = fd; fp->fdp_fn = fn; fp->fdp_ptr = ptr; sys_nfdpoll = nfd + 1; if (fd >= sys_maxfd) sys_maxfd = fd + 1; }
void sys_rmpollfn(int fd) { int nfd = sys_nfdpoll; int i, size = nfd * sizeof(t_fdpoll); t_fdpoll *fp; for (i = nfd, fp = sys_fdpoll; i--; fp++) { if (fp->fdp_fd == fd) { while (i--) { fp[0] = fp[1]; fp++; } sys_fdpoll = (t_fdpoll *)t_resizebytes(sys_fdpoll, size, size - sizeof(t_fdpoll)); sys_nfdpoll = nfd - 1; return; } } post("warning: %d removed from poll list but not found", fd); }
static int sys_domicrosleep(int microsec, int pollem) { struct timeval timout; int i, didsomething = 0; t_fdpoll *fp; timout.tv_sec = 0; timout.tv_usec = microsec; if (pollem) { fd_set readset, writeset, exceptset; FD_ZERO(&writeset); FD_ZERO(&readset); FD_ZERO(&exceptset); for (fp = sys_fdpoll, i = sys_nfdpoll; i--; fp++) FD_SET(fp->fdp_fd, &readset); select(sys_maxfd+1, &readset, &writeset, &exceptset, &timout); for (i = 0; i < sys_nfdpoll; i++) if (FD_ISSET(sys_fdpoll[i].fdp_fd, &readset)) { (*sys_fdpoll[i].fdp_fn)(sys_fdpoll[i].fdp_ptr, sys_fdpoll[i].fdp_fd); didsomething = 1; } return (didsomething); } else { select(0, 0, 0, 0, &timout); return (0); } }
void sys_microsleep(int microsec) { sys_domicrosleep(microsec, 1); }
t_socketreceiver *socketreceiver_new(void *owner, t_socketnotifier notifier, t_socketreceivefn socketreceivefn, int udp) { t_socketreceiver *x = (t_socketreceiver *)getbytes(sizeof(*x)); x->sr_inhead = x->sr_intail = 0; x->sr_owner = owner; x->sr_notifier = notifier; x->sr_socketreceivefn = socketreceivefn; x->sr_udp = udp; if (!(x->sr_inbuf = malloc(INBUFSIZE))) bug("t_socketreceiver");; return (x); }
void socketreceiver_free(t_socketreceiver *x) { free(x->sr_inbuf); freebytes(x, sizeof(*x)); }
/* this is in a separately called subroutine so that the buffer isn't
sitting on the stack while the messages are getting passed. */
static int socketreceiver_doread(t_socketreceiver *x) { char messbuf[INBUFSIZE], *bp = messbuf; int indx; int inhead = x->sr_inhead; int intail = x->sr_intail; char *inbuf = x->sr_inbuf; if (intail == inhead) return (0); for (indx = intail; indx != inhead; indx = (indx+1)&(INBUFSIZE-1)) { /* if we hit a semi that isn't preceeded by a , it's a message boundary. LATER we should deal with the possibility that the preceeding \ might itself be escaped! */ char c = *bp++ = inbuf[indx]; if (c == ';' && (!indx || inbuf[indx-1] != '\')) { intail = (indx+1)&(INBUFSIZE-1); binbuf_text(inbinbuf, messbuf, bp - messbuf); if (sys_debuglevel & DEBUG_MESSDOWN) { write(2, messbuf, bp - messbuf); write(2, "\n", 1); } x->sr_inhead = inhead; x->sr_intail = intail; return (1); } } return (0); }
static void socketreceiver_getudp(t_socketreceiver *x, int fd) { char buf[INBUFSIZE+1]; int ret = recv(fd, buf, INBUFSIZE, 0); if (ret < 0) { sys_sockerror("recv"); sys_rmpollfn(fd); sys_closesocket(fd); } else if (ret > 0) { buf[ret] = 0; #if 0 post("%s", buf); #endif if (buf[ret-1] != '\n') { #if 0 buf[ret] = 0; error("dropped bad buffer %s\n", buf); #endif } else { char *semi = strchr(buf, ';'); if (semi) *semi = 0; binbuf_text(inbinbuf, buf, strlen(buf)); outlet_setstacklim(); if (x->sr_socketreceivefn) (*x->sr_socketreceivefn)(x->sr_owner, inbinbuf); else bug("socketreceiver_getudp"); } } }
void socketreceiver_read(t_socketreceiver *x, int fd) { if (x->sr_udp) /* UDP ("datagram") socket protocol */ socketreceiver_getudp(x, fd); else /* TCP ("streaming") socket protocol */ { char *semi; int readto = (x->sr_inhead >= x->sr_intail ? INBUFSIZE : x->sr_intail-1); int ret;
/* the input buffer might be full. If so, drop the whole thing */
if (readto == x->sr_inhead)
{
fprintf(stderr, "pd: dropped message from gui\n");
x->sr_inhead = x->sr_intail = 0;
readto = INBUFSIZE;
}
else
{
ret = recv(fd, x->sr_inbuf + x->sr_inhead,
readto - x->sr_inhead, 0);
if (ret < 0)
{
sys_sockerror("recv");
if (x == sys_socketreceiver) sys_bail(1);
else
{
if (x->sr_notifier) (*x->sr_notifier)(x->sr_owner);
sys_rmpollfn(fd);
sys_closesocket(fd);
}
}
else if (ret == 0)
{
if (x == sys_socketreceiver)
{
fprintf(stderr, "pd: exiting\n");
sys_bail(0);
}
else
{
post("EOF on socket %d\n", fd);
if (x->sr_notifier) (*x->sr_notifier)(x->sr_owner);
sys_rmpollfn(fd);
sys_closesocket(fd);
}
}
else
{
x->sr_inhead += ret;
if (x->sr_inhead >= INBUFSIZE) x->sr_inhead = 0;
while (socketreceiver_doread(x))
{
outlet_setstacklim();
if (x->sr_socketreceivefn)
(*x->sr_socketreceivefn)(x->sr_owner, inbinbuf);
else binbuf_eval(inbinbuf, 0, 0, 0);
}
}
}
}
}
void sys_closesocket(int fd) { #ifdef UNIX close(fd); #endif #ifdef NT closesocket(fd); #endif }
/* thread patch by ydegoyon@free.fr */ static void *sys_dosend(void *tdata) { int length, written, res, histwas; struct timespec ts; t_guichunk *pnext;
if (sys_nogui)
return NULL;
ts.tv_sec=0;
ts.tv_nsec=UPDATER_POLLING_DELAY;
for (;;)
{
while ( sys_chunkslist != NULL )
{
// fprintf(stderr, "updater sending : %s", sys_chunkslist->s_chunk);
histwas = sys_addhist(4);
if (sys_debuglevel & DEBUG_MESSUP)
fprintf(stderr, "%s", sys_chunkslist->s_chunk);
written = 0;
length = strlen(sys_chunkslist->s_chunk);
while (1)
{
res = send(sys_guisock, sys_chunkslist->s_chunk + written, length, 0);
if (res < 0)
{
// closing the socket will end up this thread
fprintf(stderr, "updater thread : ·þ ð : ending...\n");
exit(0);
}
else
{
written += res;
if (written >= length)
break;
}
}
// need exclusive access to modify the list
if ( pthread_mutex_lock( &sys_update_mutex ) < 0 )
{
fprintf(stderr, "pd updater mutex locking error");
perror( "pthread_mutex_lock" );
}
// free sent data
sys_message_size -= strlen(sys_chunkslist->s_chunk) + 1;
freebytes( sys_chunkslist->s_chunk, strlen(sys_chunkslist->s_chunk) + 1 );
pnext = sys_chunkslist->p_next;
sys_message_size -= sizeof( t_guichunk );
if ( sys_chunkslist == sys_nextchunk ) sys_nextchunk = NULL;
freebytes( sys_chunkslist, sizeof( t_guichunk ) );
sys_chunkslist = pnext;
sys_message_counter--;
if ( ( sys_message_counter != 0 ) && ( sys_message_counter % 1000 == 0 ) )
{
fprintf(stderr, "messages pending : %d : size : %d\n", sys_message_counter, sys_message_size);
}
// ok, list is modified
if ( pthread_mutex_unlock( &sys_update_mutex ) < 0 )
{
fprintf(stderr, "pd updater mutex unlocking error");
perror( "pthread_mutex_unlock" );
}
sys_addhist(histwas);
}
#ifdef UNIX if ( nanosleep( &ts, NULL ) < 0 ) { fprintf(stderr, "Pd: updater sleping error\n"); perror( "nanosleep" ); } #endif #ifdef NT Sleep(ts.tv_nsec / 1000000); #endif
}
}
void sys_gui(char *s) { char *newchunk;
// fprintf(stderr, "storing : %s size=%d\n", s, sys_message_size); newchunk = (char*) malloc(strlen (s) + 1 ); sys_message_size += strlen(s) + 1; sys_message_counter++;
if ( ( sys_message_counter != 0 ) && ( sys_message_counter % 1000 == 0 ) ) { fprintf(stderr, "messages pending : %d : size : %d\n", sys_message_counter, sys_message_size); }
if ( !newchunk ) { fprintf(stderr, "Pd: could not allocate buffer...message to the GUI LOST!!!!!!\n"); }
sprintf( newchunk, "%s", s );
// need exclusive access to modify the list if ( pthread_mutex_lock( &sys_update_mutex ) < 0 ) { fprintf(stderr, "pd updater mutex locking error"); perror( "pthread_mutex_lock" ); }
if ( sys_chunkslist == NULL ) { sys_chunkslist = (t_guichunk*) malloc( sizeof( t_guichunk ) ); sys_message_size += sizeof( t_guichunk ); sys_chunkslist->s_chunk = newchunk; sys_chunkslist->p_next = NULL; sys_nextchunk = sys_chunkslist; } else { // find the end of the list sys_nextchunk->p_next = (t_guichunk*) malloc( sizeof( t_guichunk ) ); sys_message_size += sizeof( t_guichunk ); sys_nextchunk->p_next->s_chunk = newchunk; sys_nextchunk->p_next->p_next = NULL; sys_nextchunk=sys_nextchunk->p_next; }
// ok, list is modified if ( pthread_mutex_unlock( &sys_update_mutex ) < 0 ) { fprintf(stderr, "pd updater mutex unlocking error"); perror( "pthread_mutex_unlock" ); }
}
/* end thread patch by ydegoyon@free.fr */
/* LATER should do a bounds check -- but how do you get printf to do that? See also rtext_senditup() in this regard */
void sys_vgui(char *fmt, ...) { int result, i; char buf[2048]; va_list ap;
va_start(ap, fmt);
vsprintf(buf, fmt, ap);
sys_gui(buf);
va_end(ap);
}
#define FIRSTPORTNUM 5400
/* -------------- signal handling for UNIX -------------- */
#ifdef UNIX typedef void (*sighandler_t)(int);
static void sys_signal(int signo, sighandler_t sigfun) { struct sigaction action; action.sa_flags = 0; action.sa_handler = sigfun; memset(&action.sa_mask, 0, sizeof(action.sa_mask)); #ifdef __linux__ action.sa_restorer = 0; #endif if (sigaction(signo, &action, 0) < 0) perror("sigaction"); }
static void sys_exithandler(int n) { static int trouble = 0; if (!trouble) { trouble = 1; fprintf(stderr, "Pd: signal %d\n", n); sys_bail(1);
}
else _exit(1);
}
static void sys_alarmhandler(int n) { fprintf(stderr, "Pd: system call timed out\n"); }
static void sys_huphandler(int n) { struct timeval timout; timout.tv_sec = 0; timout.tv_usec = 30000; select(1, 0, 0, 0, &timout); }
void sys_setalarm(int microsec) { struct itimerval gonzo; #if 0 fprintf(stderr, "timer %d\n", microsec); #endif gonzo.it_interval.tv_sec = 0; gonzo.it_interval.tv_usec = 0; gonzo.it_value.tv_sec = 0; gonzo.it_value.tv_usec = microsec; if (microsec) sys_signal(SIGALRM, sys_alarmhandler); else sys_signal(SIGALRM, SIG_IGN); setitimer(ITIMER_REAL, &gonzo, 0); }
#endif
static int sys_watchfd;
void glob_ping(t_pd *dummy) { if (write(sys_watchfd, "\n", 1) < 1) { fprintf(stderr, "pd: watchdog process died\n"); sys_bail(1); } }
static int defaultfontshit[] = { 8, 5, 9, 10, 6, 10, 12, 7, 13, 14, 9, 17, 16, 10, 19, 24, 15, 28, 24, 15, 28};
int sys_startgui(const char *guidir) { pid_t childpid; char cmdbuf[4*MAXPDSTRING]; struct sockaddr_in server; int msgsock; char buf[15]; int len = sizeof(server); int ntry = 0, portno = FIRSTPORTNUM; int xsock = -1; #ifdef NT short version = MAKEWORD(2, 0); WSADATA nobby; #endif #ifdef UNIX int stdinpipe[2]; #endif /* create an empty FD poll list */ sys_fdpoll = (t_fdpoll *)t_getbytes(0); sys_nfdpoll = 0; inbinbuf = binbuf_new();
#ifdef UNIX signal(SIGHUP, sys_huphandler); signal(SIGINT, sys_exithandler); signal(SIGQUIT, sys_exithandler); signal(SIGILL, sys_exithandler); signal(SIGIOT, sys_exithandler); signal(SIGFPE, SIG_IGN); /* signal(SIGILL, sys_exithandler); signal(SIGBUS, sys_exithandler); signal(SIGSEGV, sys_exithandler); */ signal(SIGPIPE, sys_exithandler); signal(SIGALRM, SIG_IGN); signal(SIGTERM, SIG_IGN); #ifdef __linux__ signal(SIGSTKFLT, sys_exithandler); #endif #endif #ifdef NT if (WSAStartup(version, &nobby)) sys_sockerror("WSAstartup"); #endif
if (sys_nogui)
{
/* fake the GUI's message giving cwd and font sizes; then
skip starting the GUI up. */
t_atom zz[19];
int i;
#ifdef NT if (GetCurrentDirectory(MAXPDSTRING, cmdbuf) == 0) strcpy(cmdbuf, "."); #endif #ifdef UNIX if (!getcwd(cmdbuf, MAXPDSTRING)) strcpy(cmdbuf, "."); #endif SETSYMBOL(zz, gensym(cmdbuf)); for (i = 1; i < 22; i++) SETFLOAT(zz + i, defaultfontshit[i-1]); glob_initfromgui(0, 0, 22, zz); } else { #ifdef NT char scriptbuf[MAXPDSTRING+30], wishbuf[MAXPDSTRING+30], portbuf[80]; int spawnret;
#endif int intarg;
/* create a socket */
xsock = socket(AF_INET, SOCK_STREAM, 0);
if (xsock < 0) sys_sockerror("socket");
#if 0
intarg = 0;
if (setsockopt(xsock, SOL_SOCKET, SO_SNDBUF,
&intarg, sizeof(intarg)) < 0)
post("setsockopt (SO_RCVBUF) failed\n");
intarg = 0;
if (setsockopt(xsock, SOL_SOCKET, SO_RCVBUF,
&intarg, sizeof(intarg)) < 0)
post("setsockopt (SO_RCVBUF) failed\n");
#endif
intarg = 1;
if (setsockopt(xsock, IPPROTO_TCP, TCP_NODELAY,
&intarg, sizeof(intarg)) < 0)
post("setsockopt (TCP_NODELAY) failed\n");
server.sin_family = AF_INET;
server.sin_addr.s_addr = INADDR_ANY;
/* assign server port number */
server.sin_port = htons((unsigned short)portno);
/* name the socket */
while (bind(xsock, (struct sockaddr *)&server, sizeof(server)) < 0)
{
#ifdef NT int err = WSAGetLastError(); #endif #ifdef UNIX int err = errno; #endif if ((ntry++ > 20) || (err != EADDRINUSE)) { perror("bind"); fprintf(stderr, "Pd needs your machine to be configured with\n"); fprintf(stderr, "'networking' turned on (see Pd's html doc for details.)\n"); exit(1); } server.sin_port = htons((unsigned short)(++portno)); }
if (sys_verbose) fprintf(stderr, "port %d\n", portno);
sys_socketreceiver = socketreceiver_new(0, 0, 0, 0);
#ifdef UNIX childpid = fork(); if (childpid < 0) { if (errno) perror("sys_startgui"); else fprintf(stderr, "sys_startgui failed\n"); return (1); } else if (!childpid) /* we're the child */ { seteuid(getuid()); /* lose setuid priveliges */ #ifndef MACOSX /* the wish process in Unix will make a wish shell and read/write standard in and out unless we close the file descriptors. Somehow this doesn't make the MAC OSX version of Wish happy...*/ if (pipe(stdinpipe) < 0) sys_sockerror("pipe"); else { if (stdinpipe[0] != 0) { close (0); dup2(stdinpipe[0], 0); close(stdinpipe[0]); } } #endif if (!sys_guicmd) { #ifdef MACOSX char *homedir = getenv("HOME"), filename[250]; struct stat statbuf; if (!homedir || strlen(homedir) > 150) goto nexttry; sprintf(filename, "%s/Applications/Wish shell.app/Contents/MacOS/Wish Shell", homedir);
if (stat(filename, &statbuf) >= 0)
goto foundit;
nexttry:
strcpy(filename,
"/Applications/Wish Shell.app/Contents/MacOS/Wish Shell");
foundit:
sprintf(cmdbuf, "\"%s\" %s/pd.tk %d\n", filename, guidir, portno);
#else
sprintf(cmdbuf,
"TCL_LIBRARY="%s/tcl/library" TK_LIBRARY="%s/tk/library"
"%s/pd-gui" %d\n",
sys_libdir->s_name, sys_libdir->s_name, guidir, portno);
#endif
sys_guicmd = cmdbuf;
}
if (sys_verbose) fprintf(stderr, "%s", sys_guicmd);
execl("/bin/sh", "sh", "-c", sys_guicmd, 0);
perror("pd: exec");
_exit(1);
}
#endif /* UNIX */
#ifdef NT /* in NT land "guipath" is unused; we just do everything from the libdir. */ fprintf(stderr, "%s\n", sys_libdir->s_name); strcpy(scriptbuf, """); strcat(scriptbuf, sys_libdir->s_name); strcat(scriptbuf, "/bin/pd.tk""); sys_bashfilename(scriptbuf, scriptbuf); sprintf(portbuf, "%d", portno);
strcpy(wishbuf, sys_libdir->s_name);
strcat(wishbuf, "/bin/wish83.exe");
sys_bashfilename(wishbuf, wishbuf);
spawnret = _spawnl(P_NOWAIT, wishbuf, "wish83", scriptbuf, portbuf, 0);
if (spawnret < 0)
{
perror("spawnl");
fprintf(stderr, "%s: couldn't load TCL\n", wishbuf);
exit(1);
}
#endif /* NT */ }
#ifdef UNIX /* now that we've spun off the child process we can promote our process's priority, if we happen to be root. */ if (sys_hipriority) { if (!getuid() || !geteuid()) { /* To prevent lockup, we fork off a watchdog process with higher real-time priority than ours. The GUI has to send a stream of ping messages to the watchdog THROUGH the Pd process which has to pick them up from the GUI and forward them. If any of these things aren't happening the watchdog starts sending "stop" and "cont" signals to the Pd process to make it timeshare with the rest of the system. (Version 0.33P2 : if there's no GUI, the watchdog pinging is done from the scheduler idle routine in this process instead.) */
int pipe9[2], watchpid;
if (pipe(pipe9) < 0)
{
seteuid(getuid()); /* lose setuid priveliges */
sys_sockerror("pipe");
return (1);
}
watchpid = fork();
if (watchpid < 0)
{
seteuid(getuid()); /* lose setuid priveliges */
if (errno)
perror("sys_startgui");
else fprintf(stderr, "sys_startgui failed\n");
return (1);
}
else if (!watchpid) /* we're the child */
{
sys_set_priority(1);
seteuid(getuid()); /* lose setuid priveliges */
if (pipe9[1] != 0)
{
dup2(pipe9[0], 0);
close(pipe9[0]);
}
close(pipe9[1]);
sprintf(cmdbuf, "%s/pd-watchdog\n", guidir);
if (sys_verbose) fprintf(stderr, "%s", cmdbuf);
execl("/bin/sh", "sh", "-c", cmdbuf, 0);
perror("pd: exec");
_exit(1);
}
else /* we're the parent */
{
sys_set_priority(0);
seteuid(getuid()); /* lose setuid priveliges */
close(pipe9[0]);
sys_watchfd = pipe9[1];
/* We also have to start the ping loop in the GUI;
this is done later when the socket is open. */
}
}
else
{
post("realtime setting failed because not root\n");
sys_hipriority = 0;
}
}
seteuid(getuid()); /* lose setuid priveliges */
#endif /* UNIX */
#ifdef NT if (!SetPriorityClass(GetCurrentProcess(), HIGH_PRIORITY_CLASS)) fprintf(stderr, "pd: couldn't set high priority class\n"); #endif
if (!sys_nogui)
{
if (sys_verbose)
fprintf(stderr, "Waiting for connection request... \n");
if (listen(xsock, 5) < 0) sys_sockerror("listen");
sys_guisock = accept(xsock, (struct sockaddr *) &server, &len);
#ifdef OOPS close(xsock); #endif if (sys_guisock < 0) sys_sockerror("accept"); sys_addpollfn(sys_guisock, (t_fdpollfn)socketreceiver_read, sys_socketreceiver);
if (sys_verbose)
fprintf(stderr, "... connected\n");
/* thread patch by ydegoyon@free.fr */ // launch update thread if ( pthread_attr_init( &sys_updater_attr ) < 0 ) { post( "pd_startgui : could not launch update thread" ); perror( "pthread_attr_init" ); exit(-1); } if ( pthread_attr_setdetachstate( &sys_updater_attr, PTHREAD_CREATE_DETACHED ) < 0 ) { post( "pd_startgui : could not launch update thread" ); perror( "pthread_attr_setdetachstate" ); exit(-1); } if ( pthread_create( &sys_updater, &sys_updater_attr, sys_dosend, NULL ) < 0 ) { post( "pd_startgui : could not launch update thread" ); perror( "pthread_create" ); exit (-1); } else { post( "pd_startgui : updater thread %d launched", (int)sys_updater ); } // no error return code pthread_mutex_init( &sys_update_mutex, NULL ); /* end thread patch by ydegoyon@free.fr */
/* here is where we start the pinging. */
if (sys_hipriority)
sys_gui("pdtk_watchdog\n");
sys_get_audio_apis(buf);
sys_vgui("pdtk_pd_startup {%s} %s\n", pd_version, buf);
}
return (0);
}
static int sys_poll_togui(void) { /* LATER use this to flush output buffer to gui */ return (0); }
int sys_pollgui(void) { return (sys_domicrosleep(0, 1) || sys_poll_togui()); }
/* LATER try to save dirty documents */ void sys_bail(int n) { static int reentered = 0; if (!reentered) { reentered = 1; sys_close_audio(); sys_close_midi(); } _exit(n); }
void glob_quit(void *dummy) { sys_vgui("exit\n"); if (!sys_nogui) close(sys_guisock); sys_bail(0); }