ref: c6b7f738caa13c26ed423d21f3246a60fd35075a
dir: /src/sox.c/
/*
* Sox - The Swiss Army Knife of Audio Manipulation.
*
* This is the main function for the command line sox program.
*
* July 5, 1991
* Copyright 1991 Lance Norskog And Sundry Contributors
* This source code is freely redistributable and may be used for
* any purpose. This copyright notice must be maintained.
* Lance Norskog And Sundry Contributors are not responsible for
* the consequences of using this software.
*
* Change History:
*
* June 1, 1998 - Chris Bagwell (cbagwell@sprynet.com)
* Added patch to get volume working again. Based on patch sent from
* Matija Nalis <mnalis@public.srce.hr>.
* Added command line switches to force format to ADPCM or GSM.
*
* September 12, 1998 - Chris Bagwell (cbagwell@sprynet.com)
* Reworked code that handled effects. Wasn't correctly draining
* stereo effects and a few other problems.
* Made command usage (-h) show supported effects and file formats.
* (this is partially from a patch by Leigh Smith
* leigh@psychokiller.dialix.oz.au).
*
*/
#include "st_i.h"
#include <stdio.h>
#include <string.h>
#include <stdlib.h> /* for malloc() */
#include <signal.h>
#ifdef HAVE_ERRNO_H
#include <errno.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h> /* for unlink() */
#endif
#ifdef HAVE_GETOPT_H
#include <getopt.h>
#else
#ifndef HAVE_GETOPT
int getopt(int,char **,char *);
extern char *optarg;
extern int optind;
#endif
#endif
#include <sys/types.h> /* for fstat() */
#include <sys/stat.h> /* for fstat() */
#ifdef _MSC_VER
/*
* __STDC__ is defined, so these symbols aren't created.
*/
#define S_IFMT _S_IFMT
#define S_IFREG _S_IFREG
#define fstat _fstat
#define strdup _strdup
#endif
/*
* SOX main program.
*
* Rewrite for new nicer option syntax. July 13, 1991.
* Rewrite for separate effects library. Sep. 15, 1991.
* Incorporate Jimen Ching's fixes for real library operation: Aug 3, 1994.
* Rewrite for multiple effects: Aug 24, 1994.
*/
static int clipped = 0; /* Volume change clipping errors */
static int writing = 1; /* are we writing to a file? assume yes. */
static int soxpreview = 0; /* preview mode */
static int user_abort = 0;
static int quite = 0;
static int status = 0;
static unsigned long input_samples = 0;
static unsigned long read_samples = 0;
static unsigned long output_samples = 0;
static st_sample_t ibufl[ST_BUFSIZ/2]; /* Left/right interleave buffers */
static st_sample_t ibufr[ST_BUFSIZ/2];
static st_sample_t obufl[ST_BUFSIZ/2];
static st_sample_t obufr[ST_BUFSIZ/2];
typedef struct file_options
{
char *filename;
char *filetype;
st_signalinfo_t info;
char swap;
double volume;
char uservolume;
char *comment;
} file_options_t;
/* local forward declarations */
static void doopts(file_options_t *fo, int, char **);
static void usage(char *) NORET;
static void process(void);
static void print_input_status(int input);
static void update_status(void);
static void statistics(void);
static st_sample_t volumechange(st_sample_t *buf, st_ssize_t ct, double vol);
static void parse_effects(int argc, char **argv);
static void check_effects(void);
static void start_effects(void);
static void reserve_effect_buf(void);
static int flow_effect_out(void);
static int flow_effect(int);
static int drain_effect_out(void);
static int drain_effect(int);
static void release_effect_buf(void);
static void stop_effects(void);
void cleanup(void);
static void sigint(int s);
#define MAX_INPUT_FILES 32
#define MAX_FILES MAX_INPUT_FILES + 1
#ifdef SOXMIX
#define REQUIRED_INPUT_FILES 2
#else
#define REQUIRED_INPUT_FILES 1
#endif
/* Array's tracking input and output files */
static file_options_t *file_opts[MAX_FILES];
static ft_t file_desc[MAX_FILES];
static int file_count = 0;
static int input_count = 0;
/* We parse effects into a temporary effects table and then place into
* the real effects table. This makes it easier to reorder some effects
* as needed. For instance, we can run a resampling effect before
* converting a mono file to stereo. This allows the resample to work
* on half the data.
*
* Real effects table only needs to be 2 entries bigger then the user
* specified table. This is because at most we will need to add
* a resample effect and a channel averaging effect.
*/
#define MAX_EFF 16
#define MAX_USER_EFF 14
/*
* efftab[0] is a dummy entry used only as an input buffer for
* reading input data into.
*
* If one was to support effects for quad-channel files, there would
* need to be an effect table for each channel to handle effects
* that done st ST_EFF_MCHAN.
*/
static struct st_effect efftab[MAX_EFF]; /* left/mono channel effects */
static struct st_effect efftabR[MAX_EFF];/* right channel effects */
static int neffects; /* # of effects to run on data */
static int input_eff; /* last input effect with data */
static struct st_effect user_efftab[MAX_USER_EFF];
static int nuser_effects;
int main(int argc, char **argv)
{
file_options_t *fo;
int i;
myname = argv[0];
/* Loop over arguments and filenames, stop when an effect name is
* found.
*/
while (optind < argc && st_checkeffect(argv[optind]) != ST_SUCCESS)
{
if (file_count >= MAX_FILES)
{
st_fail("to many filenames. max of %d input files and 1 output files\n", MAX_INPUT_FILES);
}
/*
* Its possible to not specify the output filename by using
* "-e" option. This allows effects to be ran on data but
* no output file to be written.
*/
if (strcmp(argv[optind], "-e") == 0)
{
/* -e option found. Only thing valid after an -e
* option are effects.
*/
optind++;
if (optind >= argc ||
st_checkeffect(argv[optind]) == ST_SUCCESS)
{
writing = 0;
}
else
{
usage("Can only specify \"-e\" for output filenames");
}
}
else
{
fo = (file_options_t *)calloc(sizeof(file_options_t), 1);
fo->info.size = -1;
fo->info.encoding = -1;
fo->info.channels = -1;
fo->volume = 1.0;
file_opts[file_count++] = fo;
doopts(fo, argc, argv);
if (optind < argc)
{
fo->filename = strdup(argv[optind]);
optind++;
}
else
{
usage("missing filename");
}
}
} /* while (commandline options) */
if (writing)
input_count = file_count - 1;
else
input_count = file_count;
/* Make sure we got at least the required # of input filenames */
if (input_count < REQUIRED_INPUT_FILES)
usage("Not enough input or output filenames specified");
for (i = 0; i < input_count; i++)
{
#ifdef SOXMIX
/* When mixing audio, default to input side volume
* adjustments that will make sure no clipping will
* occur. Users most likely won't be happy with
* this and will want to override it.
*/
if (!file_opts[i]->uservolume)
file_opts[i]->volume = 1.0 / input_count;
#endif
file_desc[i] = st_open_input(file_opts[i]->filename,
&file_opts[i]->info,
file_opts[i]->filetype,
file_opts[i]->swap);
if (!file_desc[i])
{
/* st_open_input() will call st_warn for most errors.
* Rely on that printing something.
*/
cleanup();
exit(2);
}
}
/* Loop through the reset of the arguments looking for effects */
parse_effects(argc, argv);
signal(SIGINT, sigint);
process();
statistics();
for (i = 0; i < file_count; i++)
free(file_desc[i]);
if (status)
{
if (user_abort)
fprintf(stderr, "\n\nAborted.\n");
else
fprintf(stderr, "\n\nDone.\n");
}
return(0);
}
#ifdef HAVE_GETOPT_H
static char *getoptstr = "+r:v:t:c:phsuUAaigbwlfdxVSq";
#else
static char *getoptstr = "r:v:t:c:phsuUAaigbwlfdxVSq";
#endif
static void doopts(file_options_t *fo, int argc, char **argv)
{
int c, i;
char *str;
while ((c = getopt(argc, argv, getoptstr)) != -1) {
switch(c) {
case 'p':
soxpreview++;
break;
case 'h':
usage((char *)0);
/* no return from above */
case 't':
fo->filetype = optarg;
if (fo->filetype[0] == '.')
fo->filetype++;
break;
case 'r':
str = optarg;
if ((!sscanf(optarg, "%u", &fo->info.rate)) ||
(fo->info.rate <= 0))
st_fail("-r must be given a positive integer");
break;
case 'v':
str = optarg;
if (!sscanf(str, "%lf", &fo->volume))
st_fail("Volume value '%s' is not a number",
optarg);
fo->uservolume = 1;
if (fo->volume < 0.0)
st_report("Volume adjustment is negative. This will result in a phase change\n");
break;
case 'c':
str = optarg;
if (!sscanf(str, "%d", &i))
st_fail("-c must be given a number");
/* Since we use -1 as a special internal value,
* we must do some extra logic so user doesn't
* get confused when we translate -1 to mean
* something valid.
*/
if (i < 1)
st_fail("-c must be given a positive number");
fo->info.channels = i;
break;
case 'b':
fo->info.size = ST_SIZE_BYTE;
break;
case 'w':
fo->info.size = ST_SIZE_WORD;
break;
case 'l':
fo->info.size = ST_SIZE_DWORD;
break;
case 'd':
fo->info.size = ST_SIZE_DDWORD;
break;
case 's':
fo->info.encoding = ST_ENCODING_SIGN2;
break;
case 'u':
fo->info.encoding = ST_ENCODING_UNSIGNED;
break;
case 'U':
fo->info.encoding = ST_ENCODING_ULAW;
if (fo->info.size == -1)
fo->info.size = ST_SIZE_BYTE;
break;
case 'A':
fo->info.encoding = ST_ENCODING_ALAW;
if (fo->info.size == -1)
fo->info.size = ST_SIZE_BYTE;
break;
case 'f':
fo->info.encoding = ST_ENCODING_FLOAT;
break;
case 'a':
fo->info.encoding = ST_ENCODING_ADPCM;
break;
case 'i':
fo->info.encoding = ST_ENCODING_IMA_ADPCM;
break;
case 'g':
fo->info.encoding = ST_ENCODING_GSM;
break;
case 'x':
fo->swap = 1;
break;
case 'V':
verbose = 1;
break;
case 'S':
status = 1;
quite = 0;
break;
case 'q':
status = 0;
quite = 1;
break;
}
}
}
static int compare_input(ft_t ft1, ft_t ft2)
{
if (ft1->info.rate != ft2->info.rate)
return ST_EOF;
if (ft1->info.size != ft2->info.size)
return ST_EOF;
if (ft1->info.encoding != ft2->info.encoding)
return ST_EOF;
if (ft1->info.channels != ft2->info.channels)
return ST_EOF;
return ST_SUCCESS;
}
void optimize_trim(void)
{
/* Speed hack. If the "trim" effect is the first effect then
* peak inside its "effect descriptor" and see what the
* start location is. This has to be done after its start()
* is called to have the correct location.
* Also, only do this when only working with one input file.
* This is because the logic to do it for multiple files is
* complex and problably never used.
*/
if (input_count == 1 && neffects > 1 &&
strcmp(efftab[1].name, "trim") == 0)
{
if ((file_desc[0]->h->flags & ST_FILE_SEEK) && file_desc[0]->seekable)
{
if (file_desc[0]->h->seek(file_desc[0],
st_trim_get_start(&efftab[1])) != ST_EOF)
{
/* Assuming a failed seek stayed where it was. If the
* seek worked then reset the start location of
* trim so that it skips that part.
*/
st_trim_clear_start(&efftab[1]);
}
}
}
}
/*
* Process input file -> effect table -> output file
* one buffer at a time
*/
static void process(void) {
int e, f, flowstatus = ST_SUCCESS;
#ifndef SOXMIX
int current_input;
st_ssize_t ilen;
#else
st_size_t s;
st_ssize_t ilen[MAX_INPUT_FILES];
st_sample_t *ibuf[MAX_INPUT_FILES];
#endif
for (f = 0; f < input_count; f++)
{
st_report("Input file %s: using sample rate %lu\n\tsize %s, encoding %s, %d %s",
file_desc[f]->filename, file_desc[f]->info.rate,
st_sizes_str[(unsigned char)file_desc[f]->info.size],
st_encodings_str[(unsigned char)file_desc[f]->info.encoding],
file_desc[f]->info.channels,
(file_desc[f]->info.channels > 1) ? "channels" : "channel");
if (file_desc[f]->comment)
st_report("Input file %s: comment \"%s\"\n",
file_desc[f]->filename, file_desc[f]->comment);
}
for (f = 1; f < input_count; f++)
{
if (compare_input(file_desc[0], file_desc[f]) != ST_SUCCESS)
{
st_fail("Input files must have the same rate, channels, data size, and encoding");
}
}
if (writing)
{
file_desc[file_count-1] =
st_open_output(file_opts[file_count-1]->filename,
&file_opts[file_count-1]->info,
&file_desc[0]->info,
file_desc[0]->comment,
file_desc[0]->loops,
&file_desc[0]->instr,
file_opts[file_count-1]->filetype,
file_opts[file_count-1]->swap);
if (!file_desc[file_count-1])
{
/* st_open_output() will call st_warn for most errors.
* Rely on that printing something.
*/
cleanup();
exit(2);
}
/* When writing to an audio device, auto turn on the
* status display to match behavior of ogg123 status.
* That is unless user requested us not to display]
* anything.
*/
if (strcmp(file_desc[file_count-1]->filetype, "alsa") == 0 ||
strcmp(file_desc[file_count-1]->filetype, "ossdsp") == 0 ||
strcmp(file_desc[file_count-1]->filetype, "sunau") == 0)
{
if (!quite)
status = 1;
}
st_report("Output file %s: using sample rate %lu\n\tsize %s, encoding %s, %d %s",
file_desc[file_count-1]->filename,
file_desc[file_count-1]->info.rate,
st_sizes_str[(unsigned char)file_desc[file_count-1]->info.size],
st_encodings_str[(unsigned char)file_desc[file_count-1]->info.encoding],
file_desc[file_count-1]->info.channels,
(file_desc[file_count-1]->info.channels > 1) ? "channels" : "channel");
if (file_desc[file_count-1]->comment)
st_report("Output file: comment \"%s\"\n",
file_desc[file_count-1]->comment);
}
/* build efftab */
check_effects();
/* Start all effects */
start_effects();
/* Reserve an output buffer for all effects */
reserve_effect_buf();
/* Try to save some time if first effect is "trim" by seeking */
optimize_trim();
#ifdef SOXMIX
for (f = 0; f < input_count; f++)
{
/* Treat overall length the same as longest input file. */
if (file_desc[f]->length > input_samples)
input_samples = file_desc[f]->length;
ibuf[f] = (st_sample_t *)malloc(ST_BUFSIZ * sizeof(st_sample_t));
if (!ibuf[f])
{
st_fail("could not allocate memory");
}
if (status)
print_input_status(f);
}
#else
current_input = 0;
input_samples = file_desc[current_input]->length;
if (status)
print_input_status(current_input);
#endif
/*
* Just like errno, we must set st_errno to known values before
* calling I/O operations.
*/
for (f = 0; f < file_count; f++)
file_desc[f]->st_errno = 0;
input_eff = 0;
/* mark chain as empty */
for(e = 1; e < neffects; e++)
efftab[e].odone = efftab[e].olen = 0;
/* Run input data through effects and get more until olen == 0
* (or ST_EOF).
*/
do {
#ifndef SOXMIX
ilen = st_read(file_desc[current_input], efftab[0].obuf,
(st_ssize_t)ST_BUFSIZ);
if (ilen > ST_BUFSIZ)
{
st_warn("WARNING: Corrupt value of %d! Assuming 0 bytes read.\n", ilen);
ilen = 0;
}
/* FIXME: libst needs the feof() and ferror() concepts
* to see if ST_EOF means a real failure. Until then we
* must treat ST_EOF as just hiting the end of the file.
*/
if (ilen == ST_EOF)
efftab[0].olen = 0;
else
efftab[0].olen = ilen;
read_samples += (efftab[0].olen / file_desc[0]->info.channels);
/* Some file handlers claim 0 bytes instead of returning
* ST_EOF. In either case, attempt to go to the next
* input file.
*/
if (ilen == ST_EOF || efftab[0].olen == 0)
{
if (current_input < input_count-1)
{
current_input++;
input_samples = file_desc[current_input]->length;
read_samples = 0;
if (status)
print_input_status(current_input);
continue;
}
}
/* Adjust input side volume based on value specified
* by user for this file.
*/
if (file_opts[current_input]->volume != 1.0)
clipped += volumechange(efftab[0].obuf,
efftab[0].olen,
file_opts[current_input]->volume);
#else
for (f = 0; f < input_count; f++)
{
ilen[f] = st_read(file_desc[f], ibuf[f], (st_ssize_t)ST_BUFSIZ);
/* FIXME: libst needs the feof() and ferror() concepts
* to see if ST_EOF means a real failure. Until then we
* must treat ST_EOF as just hiting the end of the buffer.
*/
if (ilen[f] == ST_EOF)
ilen[f] = 0;
/* Only count read samples for first file in mix */
if (f == 0)
read_samples += (efftab[0].olen / file_desc[0]->info.channels);
/* Adjust input side volume based on value specified
* by user for this file.
*/
if (file_opts[f]->volume != 1.0)
clipped += volumechange(ibuf[f],
ilen[f],
file_opts[f]->volume);
}
/* FIXME: Should report if the size of the reads are not
* the same.
*/
efftab[0].olen = 0;
for (f = 0; f < input_count; f++)
if ((st_size_t)ilen[f] > efftab[0].olen)
efftab[0].olen = ilen[f];
for (s = 0; s < efftab[0].olen; s++)
{
/* Mix data together by summing samples together.
* It is assumed that input side volume adjustments
* will take care of any possible overflow.
* By default, SoX sets the volume adjustment
* to 1/input_count but the user can override this.
* They probably will and some clipping will probably
* occur because of this.
*/
for (f = 0; f < input_count; f++)
{
if (f == 0)
efftab[0].obuf[s] =
(s<(st_size_t)ilen[f]) ? ibuf[f][s] : 0;
else
if (s < (st_size_t)ilen[f])
{
double sample;
sample = efftab[0].obuf[s] + ibuf[f][s];
if (sample < ST_SAMPLE_MIN)
{
sample = ST_SAMPLE_MIN;
clipped++;
}
else if (sample > ST_SAMPLE_MAX)
{
sample = ST_SAMPLE_MAX;
clipped++;
}
efftab[0].obuf[s] = sample;
}
}
}
#endif
efftab[0].odone = 0;
/* If not writing and no effects are occuring then not much
* reason to continue reading. This allows this case. Mainly
* useful to print out info about input file header and quite.
*/
if (!writing && neffects == 1)
efftab[0].olen = 0;
if (efftab[0].olen == 0)
break;
flowstatus = flow_effect_out();
if (status)
update_status();
/* Quite reading/writing on user aborts. This will close
* done the files nicely as if an EOF was reached on read.
*/
if (user_abort)
break;
/* Negative flowstatus says no more output will ever be generated. */
if (flowstatus == ST_EOF ||
(writing && file_desc[file_count-1]->st_errno))
break;
} while (1);
/* This will drain the effects */
drain_effect_out();
#ifdef SOXMIX
/* Free input buffers now that they are not used */
for (f = 0; f < input_count; f++)
{
free(ibuf[f]);
}
#endif
/* Free output buffers now that they won't be used */
release_effect_buf();
/* Very Important:
* Effect stop is called BEFORE files close.
* Effect may write out more data after.
*/
stop_effects();
for (f = 0; f < input_count; f++)
{
/* If problems closing input file, just warn user since
* we are exiting anyways.
*/
if (st_close(file_desc[f]) == ST_EOF)
st_warn(file_desc[f]->st_errstr);
}
if (writing)
{
/* problem closing output file, just warn user since we
* are exiting anyways.
*/
if (st_close(file_desc[file_count-1]) == ST_EOF)
st_warn(file_desc[file_count-1]->st_errstr);
}
}
static void parse_effects(int argc, char **argv)
{
int argc_effect;
nuser_effects = 0;
while (optind < argc)
{
if (nuser_effects >= MAX_USER_EFF)
{
st_fail("To many effects specified.\n");
}
argc_effect = st_geteffect_opt(&user_efftab[nuser_effects],
argc - optind, &argv[optind]);
if (argc_effect == ST_EOF)
{
int i1;
fprintf(stderr, "%s: Known effects: ",myname);
for (i1 = 0; st_effects[i1].name; i1++)
fprintf(stderr, "%s ", st_effects[i1].name);
fprintf(stderr, "\n\n");
st_fail("Effect '%s' is not known!", argv[optind]);
}
/* Skip past effect name */
optind++;
(*user_efftab[nuser_effects].h->getopts)
(&user_efftab[nuser_effects],
argc_effect,
&argv[optind]);
/* Skip past the effect arguments */
optind += argc_effect;
nuser_effects++;
}
}
/*
* If no effect given, decide what it should be.
* Smart ruleset for multiple effects in sequence.
* Puts user-specified effect in right place.
*/
static void check_effects(void)
{
int i;
int needchan = 0, needrate = 0, haschan = 0, hasrate = 0;
int effects_mask = 0;
if (writing)
{
needrate = (file_desc[0]->info.rate != file_desc[file_count-1]->info.rate);
needchan = (file_desc[0]->info.channels != file_desc[file_count-1]->info.channels);
}
for (i = 0; i < nuser_effects; i++)
{
if (user_efftab[i].h->flags & ST_EFF_CHAN)
{
haschan++;
}
if (user_efftab[i].h->flags & ST_EFF_RATE)
{
hasrate++;
}
}
if (haschan > 1)
st_fail("Can not specify multiple effects that modify channel #");
if (hasrate > 1)
st_report("Can not specify multiple effects that change sample rate");
/* If not writing output then do not worry about adding
* channel and rate effects. This is just to speed things
* up.
*/
if (!writing)
{
needchan = 0;
needrate = 0;
}
/* --------- add the effects ------------------------ */
/* efftab[0] is always the input stream and always exists */
neffects = 1;
/* If reducing channels then its faster to run all effects
* after the avg effect.
*/
if (needchan && !(haschan) &&
(file_desc[0]->info.channels > file_desc[file_count-1]->info.channels))
{
/* Find effect and update initial pointers */
st_geteffect(&efftab[neffects], "avg");
/* give default opts for added effects */
/* FIXME: Should look at return code and abort on ST_EOF */
(* efftab[neffects].h->getopts)(&efftab[neffects],(int)0,
(char **)0);
/* Copy format info to effect table */
effects_mask = st_updateeffect(&efftab[neffects],
&file_desc[0]->info,
&file_desc[file_count-1]->info,
effects_mask);
neffects++;
}
/* If reducing the number of samples, its faster to run all effects
* after the resample effect.
*/
if (needrate && !(hasrate) &&
(file_desc[0]->info.rate > file_desc[file_count-1]->info.rate))
{
if (soxpreview)
st_geteffect(&efftab[neffects], "rate");
else
st_geteffect(&efftab[neffects], "resample");
/* set up & give default opts for added effects */
/* FIXME: Should look at return code and abort on ST_EOF */
(* efftab[neffects].h->getopts)(&efftab[neffects],(int)0,
(char **)0);
/* Copy format info to effect table */
effects_mask = st_updateeffect(&efftab[neffects],
&file_desc[0]->info,
&file_desc[file_count-1]->info,
effects_mask);
/* Rate can't handle multiple channels so be sure and
* account for that.
*/
if (efftab[neffects].ininfo.channels > 1)
{
memcpy(&efftabR[neffects], &efftab[neffects],
sizeof(struct st_effect));
}
neffects++;
}
/* Copy over user specified effects into real efftab */
for(i = 0; i < nuser_effects; i++)
{
memcpy(&efftab[neffects], &user_efftab[i],
sizeof(struct st_effect));
/* Copy format info to effect table */
effects_mask = st_updateeffect(&efftab[neffects],
&file_desc[0]->info,
&file_desc[file_count-1]->info,
effects_mask);
/* If this effect can't handle multiple channels then
* account for this.
*/
if ((efftab[neffects].ininfo.channels > 1) &&
!(efftab[neffects].h->flags & ST_EFF_MCHAN))
{
memcpy(&efftabR[neffects], &efftab[neffects],
sizeof(struct st_effect));
}
neffects++;
}
/* If rate effect hasn't been added by now then add it here.
* Check adding rate before avg because its faster to run
* rate on less channels then more.
*/
if (needrate && !(effects_mask & ST_EFF_RATE))
{
if (soxpreview)
st_geteffect(&efftab[neffects], "rate");
else
st_geteffect(&efftab[neffects], "resample");
/* set up & give default opts for added effects */
/* FIXME: Should look at return code and abort on ST_EOF */
(* efftab[neffects].h->getopts)(&efftab[neffects],(int)0,
(char **)0);
/* Copy format info to effect table */
effects_mask = st_updateeffect(&efftab[neffects],
&file_desc[0]->info,
&file_desc[file_count-1]->info,
effects_mask);
/* Rate can't handle multiple channels so be sure and
* account for that.
*/
if (efftab[neffects].ininfo.channels > 1)
{
memcpy(&efftabR[neffects], &efftab[neffects],
sizeof(struct st_effect));
}
neffects++;
}
/* If code up until now still hasn't added avg effect then
* do it now.
*/
if (needchan && !(effects_mask & ST_EFF_CHAN))
{
st_geteffect(&efftab[neffects], "avg");
/* set up & give default opts for added effects */
/* FIXME: Should look at return code and abort on ST_EOF */
(* efftab[neffects].h->getopts)(&efftab[neffects],(int)0,
(char **)0);
/* Copy format info to effect table */
effects_mask = st_updateeffect(&efftab[neffects],
&file_desc[0]->info,
&file_desc[file_count-1]->info,
effects_mask);
neffects++;
}
}
static void start_effects(void)
{
int e;
for(e = 1; e < neffects; e++) {
(*efftab[e].h->start)(&efftab[e]);
if (efftabR[e].name)
(*efftabR[e].h->start)(&efftabR[e]);
}
}
static void reserve_effect_buf(void)
{
int e;
for(e = 0; e < neffects; e++)
{
efftab[e].obuf = (st_sample_t *)malloc(ST_BUFSIZ *
sizeof(st_sample_t));
if (efftab[e].obuf == NULL)
{
st_fail("could not allocate memory");
}
if (efftabR[e].name)
{
efftabR[e].obuf = (st_sample_t *)malloc(ST_BUFSIZ *
sizeof(st_sample_t));
if (efftabR[e].obuf == NULL)
{
st_fail("could not allocate memory");
}
}
}
}
static int flow_effect_out(void)
{
int e, havedata, flowstatus = 0;
int len, total;
do {
/* run entire chain BACKWARDS: pull, don't push.*/
/* this is because buffering system isn't a nice queueing system */
for(e = neffects - 1; e >= input_eff; e--)
{
/* flow_effect returns ST_EOF when it will not process
* any more samples. This is used to bail out early.
* Since we are "pulling" data, it is OK that we are not
* calling any more previous effects since their output
* would not be looked at anyways.
*/
flowstatus = flow_effect(e);
if (flowstatus == ST_EOF)
input_eff = e+1;
/* If this buffer contains more input data then break out
* of this loop now. This will allow us to loop back around
* and reprocess the rest of this input buffer.
* I suppose this could be an issue with some effects
* if they crash when given small input buffers.
* But I was more concerned that we would need to do
* some type of garbage collection otherwise. By this I
* mean that if we went ahead and processed an effect
* lower in the chain, it might only have like 2 bytes
* left at the end of this buffer to place its data in.
* Software is more likely to refuse to handle that.
*/
if (efftab[e].odone < efftab[e].olen)
{
#if 0
fprintf(stderr, "Breaking out of loop to flush buffer\n");
#endif
break;
}
}
/* If outputing and output data was generated then write it */
if (writing && (efftab[neffects-1].olen>efftab[neffects-1].odone))
{
/* Change the volume of this output data if needed. */
if (writing && file_opts[file_count-1]->volume != 1.0)
clipped += volumechange(efftab[neffects-1].obuf,
efftab[neffects-1].olen,
file_opts[file_count-1]->volume);
/* FIXME: Should look at return code and abort
* on ST_EOF
*/
total = 0;
do
{
len = st_write(file_desc[file_count-1],
&efftab[neffects-1].obuf[total],
(st_ssize_t)efftab[neffects-1].olen-total);
if (len < 0)
{
st_warn("Error writing: %s",
file_desc[file_count-1]->st_errstr);
return ST_EOF;
}
total += len;
} while (total < efftab[neffects-1].olen);
output_samples += (total / file_desc[file_count-1]->info.channels);
efftab[neffects-1].odone = efftab[neffects-1].olen = 0;
}
else
{
/* Make it look like everything was consumed */
output_samples += (efftab[neffects-1].olen /
file_desc[file_count-1]->info.channels);
efftab[neffects-1].odone = efftab[neffects-1].olen = 0;
}
/* if stuff still in pipeline, set up to flow effects again */
/* When all effects have reported ST_EOF then this check will
* show no more data.
*/
havedata = 0;
for(e = neffects - 1; e >= input_eff; e--)
{
/* If odone and olen are the same then this buffer
* can be reused.
*/
if (efftab[e].odone == efftab[e].olen)
efftab[e].odone = efftab[e].olen = 0;
if (efftab[e].odone < efftab[e].olen) {
havedata = 1;
/* Don't break out because other things are being
* done in loop.
*/
}
}
if (!havedata && input_eff > 0)
{
/* If the input file is not returning data then
* we must prime the pump using the drain effect.
* After its primed, the loop will suck the data
* threw. Once an input_eff stop reporting samples,
* we will continue to the next until all are drained.
*/
while (input_eff < neffects)
{
int rc;
rc = drain_effect(input_eff);
if (rc == ST_EOF || efftab[input_eff].olen == 0)
input_eff++;
else
{
havedata = 1;
break;
}
}
}
} while (havedata);
/* If input_eff isn't pointing at fake first entry then there
* is no need to read any more data from disk. Return this
* fact to caller.
*/
if (input_eff > 0)
{
#if 0
fprintf(stderr, "Effect return ST_EOF\n");
#endif
return ST_EOF;
}
return ST_SUCCESS;
}
static int flow_effect(int e)
{
st_ssize_t i, done, idone, odone, idonel, odonel, idoner, odoner;
st_sample_t *ibuf, *obuf;
int effstatus;
/* I have no input data ? */
if (efftab[e-1].odone == efftab[e-1].olen)
{
#if 0
fprintf(stderr, "%s no data to pull to me!\n", efftab[e].name);
#endif
return 0;
}
if (! efftabR[e].name) {
/* No stereo data, or effect can handle stereo data so
* run effect over entire buffer.
*/
idone = efftab[e-1].olen - efftab[e-1].odone;
odone = ST_BUFSIZ - efftab[e].olen;
#if 0
fprintf(stderr, "pre %s idone=%d, odone=%d\n", efftab[e].name, idone, odone);
fprintf(stderr, "pre %s odone1=%d, olen1=%d odone=%d olen=%d\n", efftab[e].name, efftab[e-1].odone, efftab[e-1].olen, efftab[e].odone, efftab[e].olen);
#endif
effstatus = (* efftab[e].h->flow)(&efftab[e],
&efftab[e-1].obuf[efftab[e-1].odone],
&efftab[e].obuf[efftab[e].olen],
(st_size_t *)&idone,
(st_size_t *)&odone);
efftab[e-1].odone += idone;
/* Leave efftab[e].odone were it was since we didn't consume data */
/*efftab[e].odone = 0;*/
efftab[e].olen += odone;
#if 0
fprintf(stderr, "post %s idone=%d, odone=%d\n", efftab[e].name, idone, odone);
fprintf(stderr, "post %s odone1=%d, olen1=%d odone=%d olen=%d\n", efftab[e].name, efftab[e-1].odone, efftab[e-1].olen, efftab[e].odone, efftab[e].olen);
#endif
done = idone + odone;
} else {
/* Put stereo data in two seperate buffers and run effect
* on each of them.
*/
idone = efftab[e-1].olen - efftab[e-1].odone;
odone = ST_BUFSIZ - efftab[e].olen;
ibuf = &efftab[e-1].obuf[efftab[e-1].odone];
for(i = 0; i < idone; i += 2) {
ibufl[i/2] = *ibuf++;
ibufr[i/2] = *ibuf++;
}
/* left */
idonel = (idone + 1)/2; /* odd-length logic */
odonel = odone/2;
#if 0
fprintf(stderr, "pre %s idone=%d, odone=%d\n", efftab[e].name, idone, odone);
fprintf(stderr, "pre %s odone1=%d, olen1=%d odone=%d olen=%d\n", efftab[e].name, efftab[e-1].odone, efftab[e-1].olen, efftab[e].odone, efftab[e].olen);
#endif
effstatus = (* efftab[e].h->flow)(&efftab[e],
ibufl, obufl, (st_size_t *)&idonel,
(st_size_t *)&odonel);
/* right */
idoner = idone/2; /* odd-length logic */
odoner = odone/2;
/* FIXME: effstatus of previous operation is lost. */
effstatus = (* efftabR[e].h->flow)(&efftabR[e],
ibufr, obufr, (st_size_t *)&idoner,
(st_size_t *)&odoner);
obuf = &efftab[e].obuf[efftab[e].olen];
/* This loop implies left and right effect will always output
* the same amount of data.
*/
for(i = 0; i < odoner; i++) {
*obuf++ = obufl[i];
*obuf++ = obufr[i];
}
efftab[e-1].odone += idonel + idoner;
/* Don't clear since nothng has been consumed yet */
/*efftab[e].odone = 0;*/
efftab[e].olen += odonel + odoner;
#if 0
fprintf(stderr, "post %s idone=%d, odone=%d\n", efftab[e].name, idone, odone);
fprintf(stderr, "post %s odone1=%d, olen1=%d odone=%d olen=%d\n", efftab[e].name, efftab[e-1].odone, efftab[e-1].olen, efftab[e].odone, efftab[e].olen);
#endif
done = idonel + idoner + odonel + odoner;
}
if (effstatus == ST_EOF)
{
return ST_EOF;
}
if (done == 0)
st_fail("Effect took & gave no samples!");
return ST_SUCCESS;
}
static int drain_effect_out(void)
{
/* Skip past input effect since we know thats not needed */
if (input_eff == 0)
input_eff = 1;
/* Try to prime the pump with some data */
while (input_eff < neffects)
{
int rc;
rc = drain_effect(input_eff);
if (rc == ST_EOF || efftab[input_eff].olen == 0)
input_eff++;
else
break;
}
/* Just do standard flow routines after the priming. */
return flow_effect_out();
}
static int drain_effect(int e)
{
st_ssize_t i, olen, olenl, olenr;
st_sample_t *obuf;
int rc;
if (! efftabR[e].name) {
efftab[e].olen = ST_BUFSIZ;
rc = (* efftab[e].h->drain)(&efftab[e],efftab[e].obuf,
&efftab[e].olen);
efftab[e].odone = 0;
}
else {
int rc_l, rc_r;
olen = ST_BUFSIZ;
/* left */
olenl = olen/2;
rc_l = (* efftab[e].h->drain)(&efftab[e], obufl,
(st_size_t *)&olenl);
/* right */
olenr = olen/2;
rc_r = (* efftab[e].h->drain)(&efftabR[e], obufr,
(st_size_t *)&olenr);
if (rc_l == ST_EOF || rc_r == ST_EOF)
rc = ST_EOF;
else
rc = ST_SUCCESS;
obuf = efftab[e].obuf;
/* This loop implies left and right effect will always output
* the same amount of data.
*/
for(i = 0; i < olenr; i++) {
*obuf++ = obufl[i];
*obuf++ = obufr[i];
}
efftab[e].olen = olenl + olenr;
efftab[e].odone = 0;
}
return rc;
}
static void release_effect_buf(void)
{
int e;
for(e = 0; e < neffects; e++)
{
free(efftab[e].obuf);
if (efftabR[e].obuf)
free(efftabR[e].obuf);
}
}
static void stop_effects(void)
{
int e;
for (e = 1; e < neffects; e++) {
(*efftab[e].h->stop)(&efftab[e]);
if (efftabR[e].name)
(* efftabR[e].h->stop)(&efftabR[e]);
}
}
static void print_input_status(int input)
{
fprintf(stderr, "\nInput Filename : %s\n", file_desc[input]->filename);
fprintf(stderr, "Sample Size : %s\n",
st_size_bits_str[file_desc[input]->info.size]);
fprintf(stderr, "Sample Encoding: %s\n",
st_encodings_str[file_desc[input]->info.encoding]);
fprintf(stderr, "Channels : %d\n", file_desc[input]->info.channels);
fprintf(stderr, "Sample Rate : %d\n", file_desc[input]->info.rate);
if (file_desc[input]->comment && *file_desc[input]->comment)
fprintf(stderr, "Comments :\n%s\n", file_desc[input]->comment);
fprintf(stderr, "\n");
}
static void update_status(void)
{
int read_min, left_min, in_min;
double read_sec, left_sec, in_sec;
double read_time, left_time, in_time;
float completed;
unsigned long out_size;
char unit;
/* Currently, for both sox and soxmix, all input files must have
* the same sample rate. So we can always just use the rate
* of the first input file to compute time.
*/
read_time = (double)read_samples / (double)file_desc[0]->info.rate;
read_min = read_time / 60;
read_sec = (double)read_time - 60.0f * (double)read_min;
out_size = output_samples / 1073741824;
if (out_size)
unit = 'G';
else
{
out_size = output_samples / 1048675;
if (out_size)
unit = 'M';
else
{
out_size = output_samples / 1024;
if (out_size)
unit = 'K';
else
unit = ' ';
}
}
if (input_samples)
{
in_time = (double)input_samples / (double)file_desc[0]->info.rate;
left_time = in_time - read_time;
if (left_time < 0)
left_time = 0;
completed = ((double)read_samples / (double)input_samples) * 100;
if (completed < 0)
completed = 0;
}
else
{
in_time = 0;
left_time = 0;
completed = 0;
}
left_min = left_time / 60;
left_sec = (double)left_time - 60.0f * (double)left_min;
in_min = in_time / 60;
in_sec = (double)in_time - 60.0f * (double)in_min;
fprintf(stderr, "\rTime: %02i:%05.2f [%02i:%05.2f] of %02i:%05.2f (% 5.1f%%) Output Buffer: % 5ld%c", read_min, read_sec, left_min, left_sec, in_min, in_sec, completed, out_size, unit);
}
static void statistics(void)
{
if (clipped > 0)
st_report("Volume change clipped %d samples", clipped);
}
static st_sample_t volumechange(st_sample_t *buf, st_ssize_t ct,
double vol)
{
double y;
st_sample_t *p,*top;
st_ssize_t clips=0;
p = buf;
top = buf+ct;
while (p < top) {
y = vol * *p;
if (y < ST_SAMPLE_MIN) {
y = ST_SAMPLE_MIN;
clips++;
}
else if (y > ST_SAMPLE_MAX) {
y = ST_SAMPLE_MAX;
clips++;
}
*p++ = y;
}
return clips;
}
#ifdef SOXMIX
static char *usagestr =
"[ gopts ] [ fopts ] ifile1 [fopts] ifile2 [ fopts ] ofile [ effect [ effopts ] ]";
#else
static char *usagestr =
"[ gopts ] [ fopts ] ifile [ fopts ] ofile [ effect [ effopts ] ]";
#endif
static void usage(char *opt)
{
int i;
fprintf(stderr, "%s: ", myname);
if (verbose || !opt)
fprintf(stderr, "%s\n\n", st_version());
fprintf(stderr, "Usage: %s\n\n", usagestr);
if (opt)
fprintf(stderr, "Failed: %s\n", opt);
else {
fprintf(stderr,"gopts: -e -h -p -q -S -V\n\n");
fprintf(stderr,"fopts: -r rate -c channels -s/-u/-U/-A/-a/-i/-g/-f -b/-w/-l/-d -v volume -x\n\n");
fprintf(stderr, "effect: ");
for (i = 0; st_effects[i].name != NULL; i++) {
fprintf(stderr, "%s ", st_effects[i].name);
}
fprintf(stderr, "\n\neffopts: depends on effect\n\n");
fprintf(stderr, "Supported file formats: ");
for (i = 0; st_formats[i].names != NULL; i++) {
/* only print the first name */
fprintf(stderr, "%s ", st_formats[i].names[0]);
}
fputc('\n', stderr);
}
exit(1);
}
/* called from util.c::st_fail() */
void cleanup(void)
{
int i;
struct stat st;
char *fn;
/* Close the input file and outputfile before exiting*/
for (i = 0; i < input_count; i++)
{
if (file_desc[i])
{
st_close(file_desc[i]);
free(file_desc[i]);
}
}
if (writing && file_desc[file_count-1])
{
fstat(fileno(file_desc[file_count-1]->fp), &st);
fn = strdup(file_desc[file_count-1]->filename);
st_close(file_desc[file_count-1]);
/* remove the output file because we failed, if it's ours. */
/* Don't if its not a regular file. */
if ((st.st_mode & S_IFMT) == S_IFREG)
unlink(fn);
free(fn);
if (file_desc[file_count-1])
free(file_desc[file_count-1]);
}
}
static void sigint(int s)
{
if (s == SIGINT)
{
user_abort = 1;
}
}