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bfconf.c
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/*
* (c) Copyright 2001 - 2006, 2013 -- Anders Torger
*
* This program is open source. For license terms, see the LICENSE file.
*
*/
#include "defs.h"
#include <stdlib.h>
#include <stdio.h>
#include <math.h>
#include <sys/types.h>
#include <inttypes.h>
#include <limits.h>
#include <sys/stat.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <pwd.h>
#include <sys/shm.h>
#include <sched.h>
#include <dlfcn.h>
#include <stddef.h>
#include "bfrun.h"
#include "bfconf.h"
#include "emalloc.h"
#include "log2.h"
#include "bit.h"
#include "dai.h"
#include "bfconf_grammar.h"
#include "timermacros.h"
#include "shmalloc.h"
#include "dither.h"
#include "inout.h"
#include "swap.h"
#include "bfmod.h"
#include "pinfo.h"
#include "numunion.h"
#include "delay.h"
#define PATH_SEPARATOR_CHAR '/'
#define PATH_SEPARATOR_STR "/"
#define CONVOLVER_NEEDS_CONFIGFILE 1
#define MINFILTERLEN 4
#define MAXFILTERLEN (1 << 30)
struct bflex {
int line;
int token;
union bflexval lexval;
};
struct coeff {
struct bfcoeff coeff;
#define COEFF_FORMAT_RAW 1
#define COEFF_FORMAT_TEXT 3
#define COEFF_FORMAT_PROCESSED 4
int format;
int skip;
struct sample_format rawformat;
char filename[PATH_MAX];
int shm_shmids[BF_MAXCOEFFPARTS];
int shm_offsets[BF_MAXCOEFFPARTS];
int shm_blocks[BF_MAXCOEFFPARTS];
int shm_elements;
double scale;
};
struct filter {
struct bffilter filter;
struct bffilter_control fctrl;
char coeff_name[BF_MAXOBJECTNAME];
char *channel_name[2][BF_MAXCHANNELS];
char *filter_name[2][BF_MAXCHANNELS];
int process;
};
struct iodev {
int virtual_channels;
int channel_intname[BF_MAXCHANNELS];
char *channel_name[BF_MAXCHANNELS];
int virt2phys[BF_MAXCHANNELS];
struct dai_channels ch; /* physical channels */
struct bflex *device_params;
char device_name[BF_MAXOBJECTNAME];
int maxdelay;
bool_t apply_dither;
bool_t auto_format;
};
union bflexval yylval;
struct bfconf *bfconf = NULL;
uint64_t base_ts = 0;
static struct coeff *default_coeff = NULL;
static struct filter *default_filter = NULL;
static struct iodev *default_iodev[2] = { NULL, NULL };
static char *convolver_config = NULL;
static char default_config_file[PATH_MAX];
static char current_filename[PATH_MAX];
static char *modules_path = NULL;
static char *logic_names[BF_MAXMODULES];
static struct bflex *logic_params[BF_MAXMODULES];
static struct bflex *config_params;
static int config_params_pos;
static bool_t has_defaults = false;
#define FROM_DB(db) (pow(10, (db) / 20.0))
void
parse_error(const char msg[])
{
fprintf(stderr, "Parse error on line %d in file \"%s\":\n %s",
lexlineno, current_filename, msg);
exit(BF_EXIT_INVALID_CONFIG);
}
static char *
tilde_expansion(const char path[])
{
static char real_path[PATH_MAX];
struct passwd *pw;
char *homedir = NULL, *p;
int pos, slashpos = -1;
/* FIXME: cleanup the code */
if (path[0] != '~') {
strncpy(real_path, path, PATH_MAX);
real_path[PATH_MAX-1] = '\0';
return real_path;
}
if ((p = strchr(path, PATH_SEPARATOR_CHAR)) != NULL) {
slashpos = p - path;
}
if (path[1] == '\0' || slashpos == 1) {
if ((homedir = getenv("HOME")) == NULL)
{
if ((pw = getpwuid(getuid())) != NULL) {
homedir = pw->pw_dir;
}
}
} else {
strncpy(real_path, &path[1], PATH_MAX);
real_path[PATH_MAX-1] = '\0';
if (slashpos != -1) {
real_path[slashpos-1] = '\0';
}
if ((pw = getpwnam(real_path)) != NULL) {
homedir = pw->pw_dir;
}
}
if (homedir == NULL) {
strncpy(real_path, path, PATH_MAX);
real_path[PATH_MAX-1] = '\0';
return real_path;
}
real_path[PATH_MAX-1] = '\0';
strncpy(real_path, homedir, PATH_MAX - 2);
pos = strlen(homedir);
if (homedir[0] == '\0' ||
homedir[strlen(homedir)-1] != PATH_SEPARATOR_CHAR)
{
strcat(real_path, PATH_SEPARATOR_STR);
pos += 1;
}
if (slashpos != -1) {
strncpy(&real_path[pos], &path[slashpos+1], PATH_MAX - pos - 1);
} else {
strncpy(&real_path[pos], &path[1], PATH_MAX - pos - 1);
}
real_path[PATH_MAX-1] = '\0';
return real_path;
}
static void
create_default_config(void)
{
FILE *stream;
if ((stream = fopen(tilde_expansion(DEFAULT_BFCONF_NAME), "wt")) == NULL) {
fprintf(stderr, "Could not create default configuration file ("
DEFAULT_BFCONF_NAME "): %s.\n", strerror(errno));
exit(BF_EXIT_OTHER);
}
fprintf(stream, "## DEFAULT GENERAL SETTINGS ##\n\
\n\
float_bits: 32; # internal floating point precision\n\
sampling_rate: 44100; # sampling rate in Hz of audio interfaces\n\
filter_length: 65536; # length of filters\n\
config_file: \"~/.brutefir_config\"; # standard location of main config file\n\
overflow_warnings: true; # echo warnings to stderr if overflow occurs\n\
show_progress: true; # echo filtering progress to stderr\n\
max_dither_table_size: 0; # maximum size in bytes of precalculated dither\n\
allow_poll_mode: false; # allow use of input poll mode\n\
modules_path: \".\"; # extra path where to find BruteFIR modules\n\
monitor_rate: false; # monitor sample rate\n\
powersave: false; # pause filtering when input is zero\n\
lock_memory: true; # try to lock memory if realtime prio is set\n\
sdf_length: -1; # subsample filter half length in samples\n\
safety_limit: 20; # if non-zero max dB in output before aborting\n"
#ifdef CONVOLVER_NEEDS_CONFIGFILE
"convolver_config: \"~/.brutefir_convolver\"; # location of "
"convolver config file\n"
#endif
"\n\
## COEFF DEFAULTS ##\n\
\n\
coeff {\n\
\tformat: \"TEXT\"; # file format\n\
\tattenuation: 0.0; # attenuation in dB\n\
\tblocks: -1; # how long in blocks\n\
\tskip: 0; # how many bytes to skip\n\
\tshared_mem: false; # allocate in shared memory\n\
};\n\
\n\
## INPUT DEFAULTS ##\n\
\n\
input {\n\
\tdevice: \"file\" {}; # module and parameters to get audio\n\
\tsample: \"S16_LE\"; # sample format\n\
\tchannels: 2/0,1; # number of open channels / which to use\n\
\tdelay: 0,0; # delay in samples for each channel\n\
\tmaxdelay: -1; # max delay for variable delays\n\
\tsubdelay: 0,0; # subsample delay in 1/%dth sample for each channel\n\
\tmute: false,false; # mute active on startup for each channel\n\
};\n\
\n\
## OUTPUT DEFAULTS ##\n\
\n\
output {\n\
\tdevice: \"file\" {}; # module and parameters to put audio\n\
\tsample: \"S16_LE\"; # sample format\n\
\tchannels: 2/0,1; # number of open channels / which to use\n\
\tdelay: 0,0; # delay in samples for each channel\n\
\tmaxdelay: -1; # max delay for variable delays\n\
\tsubdelay: 0,0; # subsample delay in 1/%dth sample for each channel\n\
\tmute: false,false; # mute active on startup for each channel\n\
\tdither: false; # apply dither\n\
};\n\
\n\
## FILTER DEFAULTS ##\n\
\n\
filter {\n\
\tprocess: -1; # process index to run in (-1 means auto)\n\
\tdelay: 0; # predelay, in blocks\n\
\tcrossfade: false; # crossfade when coefficient is changed\n\
};\n\
", BF_SAMPLE_SLOTS, BF_SAMPLE_SLOTS);
fclose(stream);
}
static const char *
token_name(int token)
{
switch (token) {
case REAL:
return "number";
case BOOLEAN:
return "boolean";
case STRING:
return "string";
case FIELD:
return "field";
case EOS:
return "end of statement (;)";
case LBRACE:
return "left brace ({)";
case RBRACE:
return "right brace (})";
case COMMA:
return "comma (,)";
case SLASH:
return "slash (/)";
case EOF:
return "end of file";
case COEFF:
return "coeff";
case INPUT:
return "input";
case OUTPUT:
return "output";
case FILTER:
return "filter";
default:
return "UNKNOWN";
}
}
static void
unexpected_token(int expected_token,
int yylex_ret)
{
char msg[4096];
sprintf(msg, "unexpected token, expected %s, got %s.\n",
token_name(expected_token), token_name(yylex_ret));
parse_error(msg);
}
static void
unrecognised_token(const char name[],
const char string[])
{
char msg[4096];
sprintf(msg, "unrecognised %s: \"%s\".\n", name, string);
parse_error(msg);
}
static int
make_integer(double number)
{
if (rint(number) != number) {
parse_error("Expected integer, got floating point.\n");
}
return (int)number;
}
static void
get_token(int token)
{
int _token;
if ((_token = yylex()) != token) {
unexpected_token(token, _token);
}
}
static void
field_repeat_test(uint32_t *bitset,
int bit)
{
if (bit_isset(bitset, bit)) {
parse_error("Field is already set.\n");
}
bit_set(bitset, bit);
}
static void
field_mandatory_test(uint32_t bitset,
uint32_t bits,
const char name[])
{
char msg[200];
if ((bitset & bits) != bits) {
sprintf(msg, "At least one mandatory field is missing in %s.\n", name);
parse_error(msg);
}
}
static bool_t
parse_sample_format(struct sample_format *sf,
const char s[],
bool_t allow_auto)
{
bool_t little_endian, native_endian;
little_endian = true;
native_endian = false;
memset(sf, 0, sizeof(struct sample_format));
if (strcasecmp(s, "AUTO") == 0) {
if (allow_auto) {
return true;
}
parse_error("Cannot have \"AUTO\" sample format here.\n");
}
/* new sample format string format */
if (strcasecmp(s, "S8") == 0) {
sf->format = BF_SAMPLE_FORMAT_S8;
sf->bytes = 1;
sf->sbytes = 1;
little_endian = false;
} else if (strcasecmp(s, "S16_LE") == 0) {
sf->format = BF_SAMPLE_FORMAT_S16_LE;
sf->bytes = 2;
sf->sbytes = 2;
} else if (strcasecmp(s, "S16_BE") == 0) {
sf->format = BF_SAMPLE_FORMAT_S16_BE;
sf->bytes = 2;
sf->sbytes = 2;
little_endian = false;
} else if (strcasecmp(s, "S16_NE") == 0) {
sf->format = BF_SAMPLE_FORMAT_S16_NE;
sf->bytes = 2;
sf->sbytes = 2;
native_endian = true;
} else if (strcasecmp(s, "S24_LE") == 0 || strcasecmp(s, "S24_3LE") == 0) {
sf->format = BF_SAMPLE_FORMAT_S24_LE;
sf->bytes = 3;
sf->sbytes = 3;
} else if (strcasecmp(s, "S24_BE") == 0 || strcasecmp(s, "S24_3BE") == 0) {
sf->format = BF_SAMPLE_FORMAT_S24_BE;
sf->bytes = 3;
sf->sbytes = 3;
little_endian = false;
} else if (strcasecmp(s, "S24_NE") == 0 || strcasecmp(s, "S24_3NE") == 0) {
sf->format = BF_SAMPLE_FORMAT_S24_NE;
sf->bytes = 3;
sf->sbytes = 3;
native_endian = true;
} else if (strcasecmp(s, "S24_4LE") == 0) {
sf->format = BF_SAMPLE_FORMAT_S24_4LE;
sf->bytes = 4;
sf->sbytes = 3;
} else if (strcasecmp(s, "S24_4BE") == 0) {
sf->format = BF_SAMPLE_FORMAT_S24_4BE;
sf->bytes = 4;
sf->sbytes = 3;
little_endian = false;
} else if (strcasecmp(s, "S24_4NE") == 0) {
sf->format = BF_SAMPLE_FORMAT_S24_4NE;
sf->bytes = 4;
sf->sbytes = 3;
native_endian = true;
} else if (strcasecmp(s, "S32_LE") == 0) {
sf->format = BF_SAMPLE_FORMAT_S32_LE;
sf->bytes = 4;
sf->sbytes = 4;
} else if (strcasecmp(s, "S32_BE") == 0) {
sf->format = BF_SAMPLE_FORMAT_S32_BE;
sf->bytes = 4;
sf->sbytes = 4;
little_endian = false;
} else if (strcasecmp(s, "S32_NE") == 0) {
sf->format = BF_SAMPLE_FORMAT_S32_NE;
sf->bytes = 4;
sf->sbytes = 4;
native_endian = true;
} else if (strcasecmp(s, "FLOAT_LE") == 0) {
sf->format = BF_SAMPLE_FORMAT_FLOAT_LE;
sf->bytes = 4;
sf->sbytes = 4;
sf->isfloat = true;
} else if (strcasecmp(s, "FLOAT_BE") == 0) {
sf->format = BF_SAMPLE_FORMAT_FLOAT_BE;
sf->bytes = 4;
sf->sbytes = 4;
sf->isfloat = true;
little_endian = false;
} else if (strcasecmp(s, "FLOAT_NE") == 0) {
sf->format = BF_SAMPLE_FORMAT_FLOAT_NE;
sf->bytes = 4;
sf->sbytes = 4;
native_endian = true;
} else if (strcasecmp(s, "FLOAT64_LE") == 0) {
sf->format = BF_SAMPLE_FORMAT_FLOAT64_LE;
sf->bytes = 8;
sf->sbytes = 8;
sf->isfloat = true;
} else if (strcasecmp(s, "FLOAT64_BE") == 0) {
sf->format = BF_SAMPLE_FORMAT_FLOAT64_BE;
sf->bytes = 8;
sf->sbytes = 8;
sf->isfloat = true;
little_endian = false;
} else if (strcasecmp(s, "FLOAT64_NE") == 0) {
sf->format = BF_SAMPLE_FORMAT_FLOAT64_NE;
sf->bytes = 4;
sf->sbytes = 4;
native_endian = true;
} else {
parse_error("Unknown sample format.\n");
}
if (sf->isfloat) {
sf->scale = 1.0;
} else {
sf->scale = 1.0 / (double)((uint64_t)1 << ((sf->sbytes << 3) - 1));
}
#ifdef __BIG_ENDIAN__
if (native_endian) {
sf->swap = false;
switch (sf->format) {
case BF_SAMPLE_FORMAT_S16_NE:
sf->format = BF_SAMPLE_FORMAT_S16_BE;
break;
case BF_SAMPLE_FORMAT_S24_NE:
sf->format = BF_SAMPLE_FORMAT_S24_BE;
break;
case BF_SAMPLE_FORMAT_S24_4NE:
sf->format = BF_SAMPLE_FORMAT_S24_4LE;
break;
case BF_SAMPLE_FORMAT_S32_NE:
sf->format = BF_SAMPLE_FORMAT_S32_BE;
break;
case BF_SAMPLE_FORMAT_FLOAT_NE:
sf->format = BF_SAMPLE_FORMAT_FLOAT_BE;
break;
case BF_SAMPLE_FORMAT_FLOAT64_NE:
sf->format = BF_SAMPLE_FORMAT_FLOAT64_BE;
break;
}
} else {
sf->swap = little_endian;
}
#endif
#ifdef __LITTLE_ENDIAN__
if (native_endian) {
switch (sf->format) {
case BF_SAMPLE_FORMAT_S16_NE:
sf->format = BF_SAMPLE_FORMAT_S16_LE;
break;
case BF_SAMPLE_FORMAT_S24_NE:
sf->format = BF_SAMPLE_FORMAT_S24_LE;
break;
case BF_SAMPLE_FORMAT_S24_4NE:
sf->format = BF_SAMPLE_FORMAT_S24_4LE;
break;
case BF_SAMPLE_FORMAT_S32_NE:
sf->format = BF_SAMPLE_FORMAT_S32_LE;
break;
case BF_SAMPLE_FORMAT_FLOAT_NE:
sf->format = BF_SAMPLE_FORMAT_FLOAT_LE;
break;
case BF_SAMPLE_FORMAT_FLOAT64_NE:
sf->format = BF_SAMPLE_FORMAT_FLOAT64_LE;
break;
}
} else {
sf->swap = !little_endian;
}
#endif
return false;
}
static void
free_params(struct bflex *bflex)
{
int n;
if (bflex == NULL) {
return;
}
for (n = 0; bflex[n].token != 0; n++) {
switch (bflex[n].token) {
case BF_LEXVAL_STRING:
efree(bflex[n].lexval.string);
break;
case BF_LEXVAL_FIELD:
efree(bflex[n].lexval.field);
break;
}
}
efree(bflex);
}
static struct bflex *
get_params(void)
{
int brace_depth, n, capacity;
struct bflex *bflex;
get_token(LBRACE);
bflex = NULL;
brace_depth = 0;
capacity = 0;
n = 0;
while (true) {
if (n == capacity) {
capacity += 10;
bflex = erealloc(bflex, capacity * sizeof(struct bflex));
}
bflex[n].token = yylex();
bflex[n].line = lexlineno;
memcpy(&bflex[n].lexval, &yylval, sizeof(yylval));
switch (bflex[n].token) {
case BF_LEX_LBRACE:
brace_depth++;
break;
case BF_LEX_RBRACE:
if (brace_depth == 0) {
/* finished */
bflex[n].token = 0;
return bflex;
}
brace_depth--;
break;
case BF_LEXVAL_STRING:
bflex[n].lexval.string = estrdup(yylval.string);
break;
case BF_LEXVAL_FIELD:
bflex[n].lexval.field = estrdup(yylval.field);
break;
}
n++;
}
}
static int
get_config_token(union bflexval *lexval)
{
if (config_params[config_params_pos].token == 0) {
return 0;
}
lexlineno = config_params[config_params_pos].line;
memcpy(lexval, &config_params[config_params_pos].lexval,
sizeof(union bflexval));
return config_params[config_params_pos++].token;
}
/* FIXME: get_string_list and get_integer_list is very similar */
static int
get_string_list(char firststring[],
char *list[],
int maxelements,
int ending_token)
{
char *str = firststring;
int pos = 0, token;
bool_t expecting_string = false;
do {
if (!expecting_string) {
if (pos == maxelements) {
parse_error("String array is too long.\n");
}
list[pos] = estrdup(str);
pos++;
}
switch (token = yylex()) {
case STRING:
if (!expecting_string) {
unexpected_token(ending_token, token);
}
str = yylval.string;
expecting_string = false;
break;
default:
if (token != ending_token) {
unexpected_token(expecting_string ? STRING : ending_token,
token);
}
/* fall through */
case COMMA:
if (expecting_string) {
unexpected_token(STRING, token);
}
expecting_string = true;
break;
}
} while (token != ending_token);
return pos;
}
static int
get_integer_list(double firstnum,
int list[],
int maxelements,
int ending_token)
{
double num = firstnum;
int pos = 0, token;
bool_t expecting_real = false;
do {
if (!expecting_real) {
if (pos == maxelements) {
parse_error("Integer array is too long.\n");
}
list[pos] = make_integer(num);
pos++;
}
switch (token = yylex()) {
case REAL:
if (!expecting_real) {
unexpected_token(ending_token, token);
}
num = yylval.real;
expecting_real = false;
break;
default:
if (token != ending_token) {
unexpected_token(expecting_real ? REAL : ending_token,
token);
}
/* fall through */
case COMMA:
if (expecting_real) {
unexpected_token(REAL, token);
}
expecting_real = true;
break;
}
} while (token != ending_token);
return pos;
}
/* returns true if integer, returns false if string */
static bool_t
get_string_or_int(char str[],
int strmax,
int *integer)
{
int token;
switch (token = yylex()) {
case REAL:
*integer = make_integer(yylval.real);
str[0] = '\0';
return true;
case STRING:
strncpy(str, yylval.string, strmax);
str[strmax-1] = '\0';
*integer = 0;
return false;
default:
unexpected_token(STRING, token);
}
/* never reached */
return false;
}
static struct coeff *
parse_coeff(bool_t parse_default,
int intname)
{
struct coeff *coeff;
uint32_t bitset = 0;
int token, n;
coeff = emalloc(sizeof(struct coeff));
if (!parse_default) {
if (has_defaults) {
memcpy(coeff, default_coeff, sizeof(struct coeff));
} else {
memset(coeff, 0, sizeof(struct coeff));
coeff->scale = 1.0;
coeff->coeff.n_blocks = -1;
}
if (get_string_or_int(coeff->coeff.name, BF_MAXOBJECTNAME,
&coeff->coeff.intname))
{
if (coeff->coeff.intname != intname) {
parse_error("Incorrect integer name.\n");
}
sprintf(coeff->coeff.name, "%d", intname);
}
coeff->coeff.intname = intname;
} else {
memset(coeff, 0, sizeof(struct coeff));
coeff->scale = 1.0;
}
get_token(LBRACE);
do {
switch (token = yylex()) {
case FIELD:
if (strcmp(yylval.field, "format") == 0) {
field_repeat_test(&bitset, 0);
get_token(STRING);
coeff->rawformat.isfloat = true;
coeff->rawformat.swap = false;
coeff->rawformat.bytes = sizeof(float);
coeff->rawformat.sbytes = sizeof(float);
coeff->rawformat.scale = 1.0;
if (strcasecmp(yylval.string, "text") == 0) {
coeff->format = COEFF_FORMAT_TEXT;
} else if (strcasecmp(yylval.string, "processed") == 0) {
coeff->format = COEFF_FORMAT_PROCESSED;
} else {
coeff->format = COEFF_FORMAT_RAW;
parse_sample_format(&coeff->rawformat, yylval.string,
false);
}
get_token(EOS);
} else if (strcmp(yylval.field, "attenuation") == 0) {
field_repeat_test(&bitset, 1);
get_token(REAL);
coeff->scale = FROM_DB(-yylval.real);
get_token(EOS);
} else if (strcmp(yylval.field, "filename") == 0) {
field_repeat_test(&bitset, 2);
if (parse_default) {
parse_error("cannot give coeff filename in default "
"configuration.\n");
}
switch (token = yylex()) {
case STRING:
strncpy(coeff->filename, yylval.string, PATH_MAX);
coeff->filename[PATH_MAX-1] = '\0';
get_token(EOS);
break;
case REAL:
coeff->filename[0] = '\0';
n = 0;
do {
coeff->shm_shmids[n] = make_integer(yylval.real);
get_token(SLASH);
get_token(REAL);
coeff->shm_offsets[n] = make_integer(yylval.real);
get_token(SLASH);
get_token(REAL);
coeff->shm_blocks[n] = make_integer(yylval.real);
n++;
if (n == BF_MAXCOEFFPARTS) {
parse_error("too many shared memory blocks.\n");
}
if ((token = yylex()) == COMMA) {
get_token(REAL);
}
} while (token == COMMA);
if (token != EOS) {
unexpected_token(EOS, token);
}
coeff->shm_elements = n;
break;
default:
unexpected_token(STRING, token);
break;
}
} else if (strcmp(yylval.field, "blocks") == 0) {
field_repeat_test(&bitset, 3);
get_token(REAL);
coeff->coeff.n_blocks = make_integer(yylval.real);
get_token(EOS);
} else if (strcmp(yylval.field, "shared_mem") == 0) {
field_repeat_test(&bitset, 4);
get_token(BOOLEAN);
coeff->coeff.is_shared = yylval.boolean;
get_token(EOS);
} else if (strcmp(yylval.field, "skip") == 0) {
field_repeat_test(&bitset, 5);
get_token(REAL);
coeff->skip = make_integer(yylval.real);
get_token(EOS);
} else {
unrecognised_token("coeff field", yylval.field);
}
break;
case RBRACE:
break;
default:
unexpected_token(FIELD, token);
}
} while (token != RBRACE);
get_token(EOS);
if (parse_default) {
field_mandatory_test(bitset, 0x1B, "coeff");
} else {
if (!has_defaults) {
if (strcmp(coeff->filename, "dirac pulse") == 0) {
if (!bit_isset(&bitset, 0)) {
coeff->format = COEFF_FORMAT_PROCESSED;
}
field_mandatory_test(bitset, 0x04, "coeff");
} else {
field_mandatory_test(bitset, 0x05, "coeff");
}
} else {
field_mandatory_test(bitset, 0x04, "coeff");
}
}
if (coeff->format == COEFF_FORMAT_PROCESSED) {
if (coeff->scale != 1.0) {
parse_error("cannot have non-zero attenuation on processed "
"format.\n");
}
}
if (coeff->shm_elements > 0 && coeff->format != COEFF_FORMAT_PROCESSED) {
parse_error("shared memory coefficients must be in processed "
"format.\n");
}
if (!parse_default && coeff->shm_elements > 0) {
coeff->coeff.is_shared = true;
}
return coeff;
}
static void
parse_filter_io_array(struct filter *filter,
bool_t parse_default,
int io,
bool_t isfilter)
{
int len = 0, token;
char name[BF_MAXOBJECTNAME];
int io_array[BF_MAXCHANNELS];
char msg[200];
if (parse_default) {
sprintf(msg, "cannot give filter %s in default configuration.\n",
(io == IN) ? "inputs" : "outputs");
parse_error(msg);
}
do {
if (len == BF_MAXCHANNELS) {
parse_error("array is too long.\n");
}
if (!get_string_or_int(name, BF_MAXOBJECTNAME, &io_array[len])) {
io_array[len] = 0;
if (isfilter) {
filter->filter_name[io][len] = estrdup(name);
} else {
filter->channel_name[io][len] = estrdup(name);
}
} else {
if (isfilter) {
filter->filter_name[io][len] = NULL;
} else {
filter->channel_name[io][len] = NULL;
}
}
if (isfilter) {
if (io == IN) {
filter->fctrl.fscale[len] = 1.0;
}
} else {
filter->fctrl.scale[io][len] = 1.0;
}
switch (token = yylex()) {
case SLASH:
if (io == OUT && isfilter) {
parse_error("cannot scale filter outputs which are connected "
"to other filter inputs.\n");
}
switch (token = yylex()) {
case SLASH:
goto parse_scalar;
case REAL:
if (isfilter) {
filter->fctrl.fscale[len] *= FROM_DB(-yylval.real);
} else {
filter->fctrl.scale[io][len] *= FROM_DB(-yylval.real);
}
switch (token = yylex()) {
case EOS:
case COMMA:
break;
case SLASH:
parse_scalar:
get_token(REAL);
if (isfilter) {
filter->fctrl.fscale[len] *= yylval.real;
} else {
filter->fctrl.scale[io][len] *= yylval.real;
}
switch (token = yylex()) {
case EOS:
case COMMA:
break;
default:
unexpected_token(EOS, token);
}
break;
}
break;
default:
unexpected_token(REAL, token);
}
break;
case EOS:
case COMMA:
break;
default:
unexpected_token(EOS, token);
}
len++;
} while (token != EOS);
if (isfilter) {
filter->filter.n_filters[io] = len;
filter->filter.filters[io] = emalloc(len * sizeof(int));
memcpy(filter->filter.filters[io], io_array, len * sizeof(int));
} else {
filter->filter.n_channels[io] = len;
filter->filter.channels[io] = emalloc(len * sizeof(int));
memcpy(filter->filter.channels[io], io_array, len * sizeof(int));
}
}
static struct filter *
parse_filter(bool_t parse_default,
int intname)
{
struct filter *filter;
uint32_t bitset = 0;
char msg[200];
int token;
filter = emalloc(sizeof(struct filter));
if (!parse_default) {
if (has_defaults) {
memcpy(filter, default_filter, sizeof(struct filter));
} else {
memset(filter, 0, sizeof(struct filter));
filter->fctrl.coeff = -1;