[alsa-devel] [PATCH 03/10] alsabat: add tinyalsa support
Takashi Iwai
tiwai at suse.de
Fri Mar 11 15:13:42 CET 2016
On Wed, 02 Mar 2016 09:53:13 +0100,
han.lu at intel.com wrote:
>
> From: "Lu, Han" <han.lu at intel.com>
>
> Add support for alsabat to work on tinyalsa library based platforms
> such as Android and some Embedded Linux devices.
> Use option '-t' to select tinyalsa library instead of ALSA library.
> If '-t' is used while tinyalsa library is not installed in system,
> alsabat will print error message and quit.
>
> Signed-off-by: Lu, Han <han.lu at intel.com>
Hrm, I don't think it makes so much sense to build a binary bound with
both libraries. Usually it's mutual exclusive, the backend is
selected / detected via configure script.
thanks,
Takashi
>
> diff --git a/bat/Makefile.am b/bat/Makefile.am
> index 5646e9a..6101681 100644
> --- a/bat/Makefile.am
> +++ b/bat/Makefile.am
> @@ -21,6 +21,11 @@ alsabat_SOURCES += analyze.c
> noinst_HEADERS += analyze.h
> endif
>
> +if HAVE_LIBTINYALSA
> +alsabat_SOURCES += tinyalsa.c
> +noinst_HEADERS += tinyalsa.h
> +endif
> +
> AM_CPPFLAGS = \
> -Wall -I$(top_srcdir)/include
>
> diff --git a/bat/alsabat.1 b/bat/alsabat.1
> index 5f41669..126232e 100644
> --- a/bat/alsabat.1
> +++ b/bat/alsabat.1
> @@ -106,6 +106,9 @@ Valid range is (DC_THRESHOLD, 40% * Sampling rate).
> \fI\-p\fP
> Total number of periods to play or capture.
> .TP
> +\fI\-t\fP
> +If tinyalsa lib is installed, use tinyalsa lib instead of alsa lib.
> +.TP
> \fI\-\-log=#\fP
> Write stderr and stdout output to this log file.
> .TP
> diff --git a/bat/bat.c b/bat/bat.c
> index 85ec5aa..8db16c0 100644
> --- a/bat/bat.c
> +++ b/bat/bat.c
> @@ -36,6 +36,9 @@
> #ifdef HAVE_LIBFFTW3
> #include "analyze.h"
> #endif
> +#ifdef HAVE_LIBTINYALSA
> +#include "tinyalsa.h"
> +#endif
>
> static int get_duration(struct bat *bat)
> {
> @@ -125,6 +128,35 @@ static void get_format(struct bat *bat, char *optarg)
> }
> }
>
> +static int get_tiny_format(struct bat *bat, char *alsa_device,
> + unsigned int *tiny_card, unsigned int *tiny_device)
> +{
> + char *tmp1, *tmp2, *tmp3;
> +
> + if (alsa_device == NULL)
> + goto fail;
> +
> + tmp1 = strchr(alsa_device, ':');
> + if (tmp1 == NULL)
> + goto fail;
> +
> + tmp3 = tmp1 + 1;
> + tmp2 = strchr(tmp3, ',');
> + if (tmp2 == NULL)
> + goto fail;
> +
> + tmp1 = tmp2 + 1;
> + *tiny_device = atoi(tmp1);
> + *tmp2 = '\0';
> + *tiny_card = atoi(tmp3);
> + *tmp2 = ',';
> +
> + return 0;
> +fail:
> + fprintf(bat->err, _("Invalid tiny format!\n"));
> + return -EINVAL;
> +}
> +
> static inline int thread_wait_completion(struct bat *bat,
> pthread_t id, int **val)
> {
> @@ -287,6 +319,7 @@ _("Usage: alsabat [-options]...\n"
> " -k parameter for frequency detecting threshold\n"
> " -F target frequency\n"
> " -p total number of periods to play/capture\n"
> +" -t use tinyalsa instead of alsa\n"
> " --log=# file that both stdout and strerr redirecting to\n"
> " --file=# file for playback\n"
> " --saveplay=# file that storing playback content, for debug\n"
> @@ -330,6 +363,7 @@ static void set_defaults(struct bat *bat)
> bat->period_is_limited = false;
> bat->log = stdout;
> bat->err = stderr;
> + bat->tinyalsa = false;
> }
>
> static void parse_arguments(struct bat *bat, int argc, char *argv[])
> @@ -406,6 +440,16 @@ static void parse_arguments(struct bat *bat, int argc, char *argv[])
> bat->periods_total = atoi(optarg);
> bat->period_is_limited = true;
> break;
> + case 't':
> +#ifdef HAVE_LIBTINYALSA
> + bat->playback.fct = &playback_tinyalsa;
> + bat->capture.fct = &record_tinyalsa;
> + bat->tinyalsa = true;
> +#else
> + fprintf(bat->err, _("tinyalsa lib is not installed\n"));
> + exit(EXIT_FAILURE);
> +#endif
> + break;
> case 'h':
> default:
> usage(bat);
> @@ -484,6 +528,24 @@ static int bat_init(struct bat *bat)
> if (bat->playback.device == NULL && bat->capture.device == NULL)
> bat->playback.device = bat->capture.device = DEFAULT_DEV_NAME;
>
> + /* Determine tiny device if needed */
> + if (bat->tinyalsa == true) {
> + if (bat->playback.mode != MODE_SINGLE) {
> + err = get_tiny_format(bat, bat->capture.device,
> + &bat->capture.card_tiny,
> + &bat->capture.device_tiny);
> + if (err < 0)
> + return err;
> + }
> + if (bat->capture.mode != MODE_SINGLE) {
> + err = get_tiny_format(bat, bat->playback.device,
> + &bat->playback.card_tiny,
> + &bat->playback.device_tiny);
> + if (err < 0)
> + return err;
> + }
> + }
> +
> /* Determine capture file */
> if (bat->local) {
> bat->capture.file = bat->playback.file;
> diff --git a/bat/common.c b/bat/common.c
> index 798b00b..bbf969e 100644
> --- a/bat/common.c
> +++ b/bat/common.c
> @@ -18,16 +18,39 @@
> #include <stdlib.h>
> #include <stdbool.h>
> #include <errno.h>
> +#include <signal.h>
>
> #include "aconfig.h"
> #include "gettext.h"
>
> #include "common.h"
> #include "alsa.h"
> +#include "bat-signal.h"
>
> int retval_play;
> int retval_record;
>
> +int is_capturing = 1;
> +int is_playing = 1;
> +
> +/**
> + * Handling of Ctrl-C for capture
> + */
> +void sigint_handler(int sig)
> +{
> + is_capturing = 0;
> +}
> +
> +/**
> + * Handling of Ctrl-C for playback
> + */
> +void stream_close(int sig)
> +{
> + /* allow the stream to be closed gracefully */
> + signal(sig, SIG_IGN);
> + is_playing = 0;
> +}
> +
> /* update chunk_fmt data to bat */
> static int update_fmt_to_bat(struct bat *bat, struct chunk_fmt *fmt)
> {
> @@ -196,3 +219,69 @@ int write_wav_header(FILE *fp, struct wav_container *wav, struct bat *bat)
>
> return 0;
> }
> +
> +/* update wav header when data size changed */
> +int update_wav_header(struct bat *bat, FILE *fp, int bytes)
> +{
> + int err = 0;
> + struct wav_container wav;
> +
> + prepare_wav_info(&wav, bat);
> + wav.chunk.length = bytes;
> + wav.header.length = (wav.chunk.length) + sizeof(wav.chunk)
> + + sizeof(wav.format) + sizeof(wav.header) - 8;
> + rewind(fp);
> + err = write_wav_header(fp, &wav, bat);
> +
> + return err;
> +}
> +
> +/*
> + * Generate buffer to be played either from input file or from generated data
> + * Return value
> + * <0 error
> + * 0 ok
> + * >0 break
> + */
> +int generate_input_data0(struct bat *bat, void *buffer, int bytes, int frames)
> +{
> + int err;
> + static int load;
> +
> + if (bat->playback.file != NULL) {
> + /* From input file */
> + load = 0;
> +
> + while (1) {
> + err = fread(buffer + load, 1, bytes - load, bat->fp);
> + if (0 == err) {
> + if (feof(bat->fp)) {
> + fprintf(bat->log,
> + _("End of playing.\n"));
> + return 1;
> + }
> + } else if (err < bytes - load) {
> + if (ferror(bat->fp)) {
> + fprintf(bat->err, _("Read file error"));
> + fprintf(bat->err, _(": %d\n"), err);
> + return -EIO;
> + }
> + load += err;
> + } else {
> + break;
> + }
> + }
> + } else {
> + /* Generate sine wave */
> + if ((bat->sinus_duration) && (load > bat->sinus_duration))
> + return 1;
> +
> + err = generate_sine_wave(bat, frames, buffer);
> + if (err != 0)
> + return err;
> +
> + load += frames;
> + }
> +
> + return 0;
> +}
> diff --git a/bat/common.h b/bat/common.h
> index 30e39fc..0d92a8d 100644
> --- a/bat/common.h
> +++ b/bat/common.h
> @@ -14,6 +14,9 @@
> */
>
> #include <alsa/asoundlib.h>
> +#ifdef HAVE_LIBTINYALSA
> +#include <tinyalsa/asoundlib.h>
> +#endif
>
> #define TEMP_RECORD_FILE_NAME "/tmp/bat.wav.XXXXXX"
> #define DEFAULT_DEV_NAME "default"
> @@ -119,6 +122,8 @@ enum _bat_op_mode {
>
> struct pcm {
> char *device;
> + unsigned int card_tiny;
> + unsigned int device_tiny;
> char *file;
> enum _bat_op_mode mode;
> void *(*fct)(struct bat *);
> @@ -171,6 +176,8 @@ struct bat {
> void *buf; /* PCM Buffer */
>
> bool local; /* true for internal test */
> +
> + bool tinyalsa; /* true to use tinyalsa lib */
> };
>
> struct analyze {
> @@ -180,6 +187,10 @@ struct analyze {
> double *mag;
> };
>
> +void sigint_handler(int);
> +void stream_close(int);
> void prepare_wav_info(struct wav_container *, struct bat *);
> int read_wav_header(struct bat *, char *, FILE *, bool);
> int write_wav_header(FILE *, struct wav_container *, struct bat *);
> +int update_wav_header(struct bat *, FILE *, int);
> +int generate_input_data0(struct bat *, void *, int, int);
> diff --git a/bat/tinyalsa.c b/bat/tinyalsa.c
> new file mode 100644
> index 0000000..ab11247
> --- /dev/null
> +++ b/bat/tinyalsa.c
> @@ -0,0 +1,422 @@
> +/*
> + * Copyright (C) 2013-2015 Intel Corporation
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + *
> + */
> +
> +#include <stdio.h>
> +#include <string.h>
> +#include <stdbool.h>
> +#include <signal.h>
> +#include <pthread.h>
> +#include <errno.h>
> +
> +#include <tinyalsa/asoundlib.h>
> +
> +#include "aconfig.h"
> +#include "gettext.h"
> +
> +#include "common.h"
> +#include "tinyalsa.h"
> +
> +struct format_map_table {
> + int sample_bytes;
> + enum pcm_format format;
> +};
> +
> +static struct format_map_table map_tables[] = {
> + { 2, PCM_FORMAT_S16_LE },
> + { 4, PCM_FORMAT_S32_LE },
> + {}
> +};
> +
> +/**
> + * Called when thread is finished
> + */
> +static void close_handle(void *handle)
> +{
> + struct pcm *pcm = handle;
> +
> + if (NULL != pcm)
> + pcm_close(pcm);
> +}
> +
> +static int format_convert(struct bat *bat, struct pcm_config *config)
> +{
> + struct format_map_table *t = map_tables;
> +
> + for (; t->sample_bytes; t++) {
> + if (t->sample_bytes == bat->sample_size) {
> + config->format = t->format;
> + return 0;
> + }
> + }
> +
> + fprintf(bat->err, _("Invalid format!\n"));
> + return -EINVAL;
> +}
> +
> +static int init_config(struct bat *bat, struct pcm_config *config)
> +{
> + config->channels = bat->channels;
> + config->rate = bat->rate;
> + config->period_size = 1024;
> + config->period_count = 4;
> + config->start_threshold = 0;
> + config->stop_threshold = 0;
> + config->silence_threshold = 0;
> +
> + return format_convert(bat, config);
> +}
> +
> +/**
> + * Check that a parameter is inside bounds
> + */
> +static int check_param(struct bat *bat, struct pcm_params *params,
> + unsigned int param, unsigned int value,
> + char *param_name, char *param_unit)
> +{
> + unsigned int min;
> + unsigned int max;
> + int ret = 0;
> +
> + min = pcm_params_get_min(params, param);
> + if (value < min) {
> + fprintf(bat->err,
> + _("%s is %u%s, device only supports >= %u%s!\n"),
> + param_name, value, param_unit, min, param_unit);
> + ret = -EINVAL;
> + }
> +
> + max = pcm_params_get_max(params, param);
> + if (value > max) {
> + fprintf(bat->err,
> + _("%s is %u%s, device only supports <= %u%s!\n"),
> + param_name, value, param_unit, max, param_unit);
> + ret = -EINVAL;
> + }
> +
> + return ret;
> +}
> +
> +/**
> + * Check all parameters
> + */
> +static int check_playback_params(struct bat *bat,
> + struct pcm_config *config)
> +{
> + struct pcm_params *params;
> + unsigned int card = bat->playback.card_tiny;
> + unsigned int device = bat->playback.device_tiny;
> + int err = 0;
> +
> + params = pcm_params_get(card, device, PCM_OUT);
> + if (params == NULL) {
> + fprintf(bat->err, _("Unable to open PCM device %u!\n"),
> + device);
> + return -EINVAL;
> + }
> +
> + err = check_param(bat, params, PCM_PARAM_RATE,
> + config->rate, "Sample rate", "Hz");
> + if (err < 0)
> + goto exit;
> + err = check_param(bat, params, PCM_PARAM_CHANNELS,
> + config->channels, "Sample", " channels");
> + if (err < 0)
> + goto exit;
> + err = check_param(bat, params, PCM_PARAM_SAMPLE_BITS,
> + bat->sample_size * 8, "Bitrate", " bits");
> + if (err < 0)
> + goto exit;
> + err = check_param(bat, params, PCM_PARAM_PERIOD_SIZE,
> + config->period_size, "Period size", "Hz");
> + if (err < 0)
> + goto exit;
> + err = check_param(bat, params, PCM_PARAM_PERIODS,
> + config->period_count, "Period count", "Hz");
> + if (err < 0)
> + goto exit;
> +
> +exit:
> + pcm_params_free(params);
> +
> + return err;
> +}
> +
> +/**
> + * Play sample
> + */
> +static int play_sample(struct bat *bat, struct pcm *pcm,
> + void *buffer, int bytes)
> +{
> + int err = 0;
> + FILE *fp = NULL;
> + int frames = bytes / bat->frame_size;
> + int bytes_total = 0;
> +
> + if (bat->debugplay) {
> + fp = fopen(bat->debugplay, "wb");
> + if (fp == NULL) {
> + fprintf(bat->err, _("Cannot open file for capture: "));
> + fprintf(bat->err, _("%s %d\n"), bat->debugplay, -errno);
> + return -errno;
> + }
> + /* leave space for file header */
> + if (fseek(fp, sizeof(struct wav_container), SEEK_SET) != 0) {
> + fclose(fp);
> + return -errno;
> + }
> + }
> +
> + do {
> + err = generate_input_data0(bat, buffer, bytes, frames);
> + if (err != 0)
> + break;
> +
> + if (bat->debugplay) {
> + if (fwrite(buffer, 1, bytes, fp) != bytes) {
> + update_wav_header(bat, fp, bytes_total);
> + fclose(fp);
> + return -EIO;
> + }
> + bytes_total += bytes;
> + }
> +
> + bat->periods_played++;
> + if (bat->period_is_limited
> + && bat->periods_played >= bat->periods_total)
> + break;
> +
> + err = pcm_write(pcm, buffer, bytes);
> + if (err != 0) {
> + fprintf(bat->err, _("Write PCM device error: %d\n"),
> + err);
> + break;
> + }
> + } while (is_playing);
> +
> + if (bat->debugplay) {
> + err = update_wav_header(bat, fp, bytes_total);
> + fclose(fp);
> + }
> + return err;
> +}
> +
> +/**
> + * Play
> + */
> +void *playback_tinyalsa(struct bat *bat)
> +{
> + int err = 0;
> + struct pcm_config config;
> + struct pcm *pcm = NULL;
> + void *buffer = NULL;
> + int bufbytes;
> + unsigned int card = bat->playback.card_tiny;
> + unsigned int device = bat->playback.device_tiny;
> +
> + fprintf(bat->log, _("Entering playback thread (tinyalsa).\n"));
> +
> + retval_play = 0;
> +
> + /* init config */
> + err = init_config(bat, &config);
> + if (err < 0) {
> + retval_play = err;
> + goto exit1;
> + }
> +
> + /* check param before open device */
> + err = check_playback_params(bat, &config);
> + if (err < 0) {
> + retval_play = err;
> + goto exit1;
> + }
> +
> + /* init device */
> + pcm = pcm_open(card, device, PCM_OUT, &config);
> + if (!pcm || !pcm_is_ready(pcm)) {
> + fprintf(bat->err, _("Unable to open PCM device %u (%s)!\n"),
> + device, pcm_get_error(pcm));
> + retval_play = -EINVAL;
> + goto exit1;
> + }
> +
> + /* init buffer */
> + bufbytes = pcm_frames_to_bytes(pcm, pcm_get_buffer_size(pcm));
> + buffer = malloc(bufbytes);
> + if (!buffer) {
> + retval_play = -ENOMEM;
> + goto exit2;
> + }
> +
> + /* init playback source */
> + if (bat->playback.file == NULL) {
> + fprintf(bat->log, _("Playing generated audio sine wave"));
> + bat->sinus_duration == 0 ?
> + fprintf(bat->log, _(" endlessly\n")) :
> + fprintf(bat->log, _("\n"));
> + } else {
> + fprintf(bat->log, _("Playing input audio file: %s\n"),
> + bat->playback.file);
> + bat->fp = fopen(bat->playback.file, "rb");
> + if (bat->fp == NULL) {
> + fprintf(bat->err, _("Cannot open file for playback: "));
> + fprintf(bat->err, _("%s %d\n"),
> + bat->playback.file, -errno);
> + retval_play = -errno;
> + goto exit3;
> + }
> + /* Skip header */
> + err = read_wav_header(bat, bat->playback.file, bat->fp, true);
> + if (err != 0) {
> + retval_play = err;
> + goto exit4;
> + }
> + }
> +
> + /* catch ctrl-c to shutdown cleanly */
> + signal(SIGINT, stream_close);
> +
> + err = play_sample(bat, pcm, buffer, bufbytes);
> + if (err < 0) {
> + retval_play = err;
> + goto exit4;
> + }
> +
> +exit4:
> + if (bat->playback.file)
> + fclose(bat->fp);
> +exit3:
> + free(buffer);
> +exit2:
> + pcm_close(pcm);
> +exit1:
> + pthread_exit(&retval_play);
> +}
> +
> +/**
> + * Capture sample
> + */
> +static int capture_sample(struct bat *bat, struct pcm *pcm,
> + void *buffer, unsigned int bytes)
> +{
> + int err = 0;
> + FILE *fp = NULL;
> + unsigned int bytes_read = 0;
> + unsigned int bytes_count = bat->frames * bat->frame_size;
> +
> + remove(bat->capture.file);
> + fp = fopen(bat->capture.file, "wb");
> + if (fp == NULL) {
> + fprintf(bat->err, _("Cannot open file for capture: %s %d\n"),
> + bat->capture.file, -errno);
> + return -errno;
> + }
> + /* leave space for file header */
> + if (fseek(fp, sizeof(struct wav_container), SEEK_SET) != 0) {
> + fclose(fp);
> + return -errno;
> + }
> +
> + while (bytes_read < bytes_count && is_capturing
> + && !pcm_read(pcm, buffer, bytes)) {
> + if (fwrite(buffer, 1, bytes, fp) != bytes)
> + break;
> +
> + bytes_read += bytes;
> +
> + bat->periods_played++;
> +
> + if (bat->period_is_limited
> + && bat->periods_played >= bat->periods_total)
> + break;
> + }
> +
> + err = update_wav_header(bat, fp, bytes_read);
> +
> + fclose(fp);
> + return err;
> +}
> +
> +/**
> + * Record
> + */
> +void *record_tinyalsa(struct bat *bat)
> +{
> + int err = 0;
> + struct pcm_config config;
> + struct pcm *pcm;
> + void *buffer;
> + unsigned int bufbytes;
> +
> + pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL);
> +
> + fprintf(bat->log, _("Entering capture thread (tinyalsa).\n"));
> +
> + retval_record = 0;
> +
> + /* init config */
> + err = init_config(bat, &config);
> + if (err < 0) {
> + retval_record = err;
> + goto exit1;
> + }
> +
> + /* init device */
> + pcm = pcm_open(bat->capture.card_tiny, bat->capture.device_tiny,
> + PCM_IN, &config);
> + if (!pcm || !pcm_is_ready(pcm)) {
> + fprintf(bat->err, _("Unable to open PCM device (%s)!\n"),
> + pcm_get_error(pcm));
> + retval_record = -EINVAL;
> + goto exit1;
> + }
> +
> + /* init buffer */
> + bufbytes = pcm_frames_to_bytes(pcm, pcm_get_buffer_size(pcm));
> + buffer = malloc(bufbytes);
> + if (!buffer) {
> + retval_record = -ENOMEM;
> + goto exit2;
> + }
> +
> + /* install signal handler and begin capturing Ctrl-C */
> + signal(SIGINT, sigint_handler);
> +
> + pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL);
> + pthread_setcanceltype(PTHREAD_CANCEL_DEFERRED, NULL);
> + pthread_cleanup_push(close_handle, pcm);
> + pthread_cleanup_push(free, buffer);
> +
> + fprintf(bat->log, _("Recording ...\n"));
> + err = capture_sample(bat, pcm, buffer, bufbytes);
> + if (err != 0) {
> + retval_record = err;
> + goto exit3;
> + }
> +
> + /* Normally we will never reach this part of code (unless error in
> + * previous call) (before exit3) as this thread will be cancelled
> + * by end of play thread. Except in single line mode. */
> + pthread_cleanup_pop(0);
> + pthread_cleanup_pop(0);
> + pthread_exit(&retval_record);
> +
> +exit3:
> + free(buffer);
> +exit2:
> + pcm_close(pcm);
> +exit1:
> + pthread_exit(&retval_record);
> +}
> diff --git a/bat/tinyalsa.h b/bat/tinyalsa.h
> new file mode 100644
> index 0000000..70e4749
> --- /dev/null
> +++ b/bat/tinyalsa.h
> @@ -0,0 +1,23 @@
> +/*
> + * Copyright (C) 2013-2015 Intel Corporation
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + *
> + */
> +
> +extern int retval_play;
> +extern int retval_record;
> +
> +extern int is_capturing;
> +extern int is_playing;
> +
> +void *playback_tinyalsa(struct bat *);
> +void *record_tinyalsa(struct bat *);
> diff --git a/configure.ac b/configure.ac
> index f6f8103..87dd237 100644
> --- a/configure.ac
> +++ b/configure.ac
> @@ -73,6 +73,9 @@ if test x$bat = xtrue; then
> dnl Check for libfftw3
> have_libfftw3="yes"
> AC_CHECK_LIB([fftw3], [fftw_malloc], , [have_libfftw3="no"])
> + dnl Check for libtinyalsa
> + have_libtinyalsa="yes"
> + AC_CHECK_LIB([tinyalsa], [pcm_open], , [have_libtinyalsa="no"])
> AC_CHECK_LIB([m], [sqrtf], , [AC_MSG_ERROR([Error: Need sqrtf])])
> AC_CHECK_LIB([pthread], [pthread_create], , [AC_MSG_ERROR([Error: need PTHREAD library])])
> FFTW_CFLAGS="$CFLAGS"
> @@ -86,6 +89,7 @@ if test x$bat = xtrue; then
>
> fi
> AM_CONDITIONAL(HAVE_LIBFFTW3, test "$have_libfftw3" = "yes")
> +AM_CONDITIONAL(HAVE_LIBTINYALSA, test "$have_libtinyalsa" = "yes")
>
> dnl Check for librt
> LIBRT=""
> --
> 2.5.0
>
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> Alsa-devel at alsa-project.org
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>
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