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alsa-utils/aplay/aplay.c
Abramo Bagnara fb8e187f17 Commented out useless (and wrong) munmap
2000-06-04 16:26:59 +00:00

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/*
* aplay.c - plays and records
*
* CREATIVE LABS CHANNEL-files
* Microsoft WAVE-files
* SPARC AUDIO .AU-files
* Raw Data
*
* Copyright (c) by Jaroslav Kysela <perex@suse.cz>
* Based on vplay program by Michael Beck
*
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#include <stdio.h>
#include <malloc.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <getopt.h>
#include <fcntl.h>
#include <ctype.h>
#include <errno.h>
#include <sys/asoundlib.h>
#include <assert.h>
#include <sys/poll.h>
#include <sys/uio.h>
#include "aconfig.h"
#include "formats.h"
#include "version.h"
#define DEFAULT_SPEED 8000
#define FORMAT_DEFAULT -1
#define FORMAT_RAW 0
#define FORMAT_VOC 1
#define FORMAT_WAVE 2
#define FORMAT_AU 3
/* global data */
static ssize_t (*read_func)(snd_pcm_t *handle, void *buffer, size_t size);
static ssize_t (*write_func)(snd_pcm_t *handle, const void *buffer, size_t size);
static ssize_t (*readv_func)(snd_pcm_t *handle, const struct iovec *vector, unsigned long count);
static ssize_t (*writev_func)(snd_pcm_t *handle, const struct iovec *vector, unsigned long count);
static char *command;
static snd_pcm_t *pcm_handle;
static snd_pcm_stream_info_t cinfo;
static snd_pcm_format_t rformat, format;
static snd_pcm_stream_setup_t setup;
static int timelimit = 0;
static int quiet_mode = 0;
static int verbose_mode = 0;
static int active_format = FORMAT_DEFAULT;
static int mode = SND_PCM_MODE_FRAGMENT;
static int direction = SND_PCM_OPEN_PLAYBACK;
static int stream = SND_PCM_STREAM_PLAYBACK;
static int mmap_flag = 0;
static snd_pcm_mmap_control_t *mmap_control = NULL;
static char *mmap_data = NULL;
static int noplugin = 0;
static int nonblock = 0;
static char *audiobuf = NULL;
static int align = 1;
static int buffer_size = -1;
/* 250 ms */
static int frag_length = 250;
static int show_setup = 0;
static int buffer_pos = 0;
static int count;
static int vocmajor, vocminor;
/* needed prototypes */
static void playback(char *filename);
static void capture(char *filename);
static void playbackv(char **filenames, unsigned int count);
static void capturev(char **filenames, unsigned int count);
static void begin_voc(int fd, size_t count);
static void end_voc(int fd);
static void begin_wave(int fd, size_t count);
static void end_wave(int fd);
static void begin_au(int fd, size_t count);
struct fmt_capture {
void (*start) (int fd, size_t count);
void (*end) (int fd);
char *what;
} fmt_rec_table[] = {
{ NULL, end_wave, "raw data" },
{ begin_voc, end_voc, "VOC" },
{ begin_wave, end_wave, "WAVE" },
{ begin_au, end_wave, "Sparc Audio" }
};
static void check_new_format(snd_pcm_format_t * format)
{
if (cinfo.rates & (SND_PCM_RATE_CONTINUOUS|SND_PCM_RATE_KNOT)) {
if (format->rate < cinfo.min_rate ||
format->rate > cinfo.max_rate) {
fprintf(stderr, "%s: unsupported rate %iHz (valid range is %iHz-%iHz)\n", command, format->rate, cinfo.min_rate, cinfo.max_rate);
exit(EXIT_FAILURE);
}
} else {
unsigned int r;
switch (format->rate) {
case 8000: r = SND_PCM_RATE_8000; break;
case 11025: r = SND_PCM_RATE_11025; break;
case 16000: r = SND_PCM_RATE_16000; break;
case 22050: r = SND_PCM_RATE_22050; break;
case 32000: r = SND_PCM_RATE_32000; break;
case 44100: r = SND_PCM_RATE_44100; break;
case 48000: r = SND_PCM_RATE_48000; break;
case 88200: r = SND_PCM_RATE_88200; break;
case 96000: r = SND_PCM_RATE_96000; break;
case 176400: r = SND_PCM_RATE_176400; break;
case 192000: r = SND_PCM_RATE_192000; break;
default: r = 0; break;
}
if (!(cinfo.rates & r)) {
fprintf(stderr, "%s: unsupported rate %iHz\n", command, format->rate);
exit(EXIT_FAILURE);
}
}
if (cinfo.min_channels > format->channels || cinfo.max_channels < format->channels) {
fprintf(stderr, "%s: unsupported number of channels %i (valid range is %i-%i)\n", command, format->channels, cinfo.min_channels, cinfo.max_channels);
exit(EXIT_FAILURE);
}
if (!(cinfo.formats & (1 << format->format))) {
fprintf(stderr, "%s: unsupported format %s\n", command, snd_pcm_get_format_name(format->format));
exit(EXIT_FAILURE);
}
if (format->channels > 1) {
if (format->interleave) {
if (!(cinfo.flags & SND_PCM_STREAM_INFO_INTERLEAVE)) {
fprintf(stderr, "%s: unsupported interleaved format\n", command);
exit(EXIT_FAILURE);
}
} else if (!(cinfo.flags & SND_PCM_STREAM_INFO_NONINTERLEAVE)) {
fprintf(stderr, "%s: unsupported non interleaved format\n", command);
exit(EXIT_FAILURE);
}
}
}
static void usage(char *command)
{
int k;
fprintf(stderr,
"Usage: %s [switches] [filename] <filename> ...\n"
"Available switches:\n"
"\n"
" -h,--help help\n"
" -V,--version print current version\n"
" -l list all soundcards and digital audio devices\n"
" -c <card> select card # or card id (0-%i), defaults to 0\n"
" -d <device> select device #, defaults to 0\n"
" -q quiet mode\n"
" -v file format Voc\n"
" -w file format Wave\n"
" -r file format Raw\n"
" -o <channels> channels (1-N)\n"
" -s <Hz> speed (Hz)\n"
" -f <format> data format\n"
" -F <msec> fragment length\n"
" -m set CD-ROM quality (44100Hz,stereo,16-bit linear,little endian)\n"
" -M set DAT quality (48000Hz,stereo,16-bit linear,little endian)\n"
" -t <secs> timelimit (seconds)\n"
" -e frames mode\n"
" -E mmap mode\n"
" -N Don't use plugins\n"
" -B Nonblocking mode\n"
" -I Noninterleaved mode\n"
" -S Show setup\n"
,command, snd_cards()-1);
fprintf(stderr, "\nRecognized data formats are:");
for (k = 0; k < 32; ++k) {
const char *s = snd_pcm_get_format_name(k);
if (s)
fprintf(stderr, " %s", s);
}
fprintf(stderr, " (some of these may not be available on selected hardware)\n");
}
static void device_list(void)
{
snd_ctl_t *handle;
int card, err, dev, idx;
unsigned int mask;
snd_ctl_hw_info_t info;
snd_pcm_info_t pcminfo;
snd_pcm_stream_info_t stream_info;
mask = snd_cards_mask();
if (!mask) {
fprintf(stderr, "%s: no soundcards found...\n", command);
return;
}
for (card = 0; card < SND_CARDS; card++) {
if (!(mask & (1 << card)))
continue;
if ((err = snd_ctl_open(&handle, card)) < 0) {
fprintf(stderr, "Error: control open (%i): %s\n", card, snd_strerror(err));
continue;
}
if ((err = snd_ctl_hw_info(handle, &info)) < 0) {
fprintf(stderr, "Error: control hardware info (%i): %s\n", card, snd_strerror(err));
snd_ctl_close(handle);
continue;
}
for (dev = 0; dev < info.pcmdevs; dev++) {
if ((err = snd_ctl_pcm_info(handle, dev, &pcminfo)) < 0) {
fprintf(stderr, "Error: control digital audio info (%i): %s\n", card, snd_strerror(err));
continue;
}
fprintf(stderr, "%s: %i [%s] / #%i: %s\n",
info.name,
card + 1,
info.id,
dev,
pcminfo.name);
fprintf(stderr, " Directions: %s%s%s\n",
pcminfo.flags & SND_PCM_INFO_PLAYBACK ? "playback " : "",
pcminfo.flags & SND_PCM_INFO_CAPTURE ? "capture " : "",
pcminfo.flags & SND_PCM_INFO_DUPLEX ? "duplex " : "");
fprintf(stderr, " Playback subdevices: %i\n", pcminfo.playback + 1);
fprintf(stderr, " Capture subdevices: %i\n", pcminfo.capture + 1);
if (pcminfo.flags & SND_PCM_INFO_PLAYBACK) {
for (idx = 0; idx <= pcminfo.playback; idx++) {
memset(&stream_info, 0, sizeof(stream_info));
stream_info.stream = SND_PCM_STREAM_PLAYBACK;
if ((err = snd_ctl_pcm_stream_info(handle, dev, SND_PCM_STREAM_PLAYBACK, idx, &stream_info)) < 0) {
fprintf(stderr, "Error: control digital audio playback info (%i): %s\n", card, snd_strerror(err));
} else {
fprintf(stderr, " Playback subdevice #%i: %s\n", idx, stream_info.subname);
}
}
}
if (pcminfo.flags & SND_PCM_INFO_CAPTURE) {
for (idx = 0; idx <= pcminfo.capture; idx++) {
memset(&stream_info, 0, sizeof(stream_info));
stream_info.stream = SND_PCM_STREAM_CAPTURE;
if ((err = snd_ctl_pcm_stream_info(handle, dev, SND_PCM_STREAM_CAPTURE, 0, &stream_info)) < 0) {
fprintf(stderr, "Error: control digital audio capture info (%i): %s\n", card, snd_strerror(err));
} else {
fprintf(stderr, " Capture subdevice #%i: %s\n", idx, stream_info.subname);
}
}
}
}
snd_ctl_close(handle);
}
}
static void version(void)
{
fprintf(stderr, "%s: version " SND_UTIL_VERSION_STR " by Jaroslav Kysela <perex@suse.cz>\n", command);
}
int main(int argc, char *argv[])
{
int card, dev, tmp, err, c;
card = 0;
dev = 0;
command = argv[0];
active_format = FORMAT_DEFAULT;
if (strstr(argv[0], "arecord")) {
direction = SND_PCM_OPEN_CAPTURE;
stream = SND_PCM_STREAM_CAPTURE;
active_format = FORMAT_WAVE;
command = "Arecord";
} else if (strstr(argv[0], "aplay")) {
direction = SND_PCM_OPEN_PLAYBACK;
stream = SND_PCM_STREAM_PLAYBACK;
command = "Aplay";
} else {
fprintf(stderr, "Error: command should be named either arecord or aplay\n");
return 1;
}
buffer_size = -1;
memset(&rformat, 0, sizeof(rformat));
rformat.interleave = 1;
rformat.format = SND_PCM_SFMT_U8;
rformat.rate = DEFAULT_SPEED;
rformat.channels = 1;
if (argc > 1 && !strcmp(argv[1], "--help")) {
usage(command);
return 0;
}
if (argc > 1 && !strcmp(argv[1], "--version")) {
version();
return 0;
}
while ((c = getopt(argc, argv, "hlc:d:qs:o:t:vrwxc:p:mMVeEf:NBF:SI")) != EOF)
switch (c) {
case 'h':
usage(command);
return 0;
case 'l':
device_list();
return 0;
case 'c':
card = snd_card_name(optarg);
if (card < 0) {
fprintf(stderr, "Error: soundcard '%s' not found\n", optarg);
return 1;
}
break;
case 'd':
dev = atoi(optarg);
if (dev < 0 || dev > 32) {
fprintf(stderr, "Error: device %i is invalid\n", dev);
return 1;
}
break;
case 'o':
tmp = atoi(optarg);
if (tmp < 1 || tmp > 32) {
fprintf(stderr, "Error: value %i for channels is invalid\n", tmp);
return 1;
}
rformat.channels = tmp;
break;
case 'q':
quiet_mode = 1;
break;
case 'r':
active_format = FORMAT_RAW;
break;
case 'v':
active_format = FORMAT_VOC;
break;
case 'w':
active_format = FORMAT_WAVE;
break;
case 's':
tmp = atoi(optarg);
if (tmp < 300)
tmp *= 1000;
rformat.rate = tmp;
if (tmp < 2000 || tmp > 128000) {
fprintf(stderr, "Error: bad speed value %i\n", tmp);
return 1;
}
break;
case 't':
timelimit = atoi(optarg);
break;
case 'x':
verbose_mode = 1;
quiet_mode = 0;
break;
case 'f':
rformat.format = snd_pcm_get_format_value(optarg);
if (rformat.format < 0) {
fprintf(stderr, "Error: wrong extended format '%s'\n", optarg);
exit(EXIT_FAILURE);
}
break;
case 'm':
case 'M':
rformat.format = SND_PCM_SFMT_S16_LE;
rformat.rate = c == 'M' ? 48000 : 44100;
rformat.channels = 2;
break;
case 'V':
version();
return 0;
case 'e':
mode = SND_PCM_MODE_FRAME;
break;
case 'E':
mmap_flag = 1;
break;
case 'N':
noplugin = 1;
break;
case 'B':
nonblock = 1;
break;
case 'F':
frag_length = atoi(optarg);
break;
case 'S':
show_setup = 1;
break;
case 'I':
rformat.interleave = 0;
break;
default:
usage(command);
return 1;
}
if (!quiet_mode)
version();
if (!quiet_mode) {
char *cardname;
if ((err = snd_card_get_longname(card, &cardname)) < 0) {
fprintf(stderr, "Error: unable to obtain longname: %s\n", snd_strerror(err));
return 1;
}
fprintf(stderr, "Using soundcard '%s'\n", cardname);
free(cardname);
}
if (noplugin)
err = snd_pcm_open(&pcm_handle, card, dev, direction);
else
err = snd_pcm_plug_open(&pcm_handle, card, dev, direction);
if (err < 0) {
fprintf(stderr, "Error: audio open error: %s\n", snd_strerror(err));
return 1;
}
if (nonblock) {
err = snd_pcm_stream_nonblock(pcm_handle, stream, 1);
if (err < 0) {
fprintf(stderr, "nonblock setting error: %s\n", snd_strerror(err));
return 1;
}
}
memset(&cinfo, 0, sizeof(cinfo));
cinfo.stream = stream;
if ((err = snd_pcm_stream_info(pcm_handle, &cinfo)) < 0) {
fprintf(stderr, "Error: stream info error: %s\n", snd_strerror(err));
return 1;
}
buffer_size = 1024;
format = rformat;
audiobuf = (char *)malloc(1024);
if (audiobuf == NULL) {
fprintf(stderr, "Error: not enough memory\n");
return 1;
}
if (mmap_flag) {
write_func = snd_pcm_mmap_write;
read_func = snd_pcm_mmap_read;
writev_func = snd_pcm_mmap_writev;
readv_func = snd_pcm_mmap_readv;
} else {
write_func = snd_pcm_write;
read_func = snd_pcm_read;
writev_func = snd_pcm_writev;
readv_func = snd_pcm_readv;
}
if (rformat.interleave) {
if (optind > argc - 1) {
if (stream == SND_PCM_STREAM_PLAYBACK)
playback(NULL);
else
capture(NULL);
} else {
while (optind <= argc - 1) {
if (stream == SND_PCM_STREAM_PLAYBACK)
playback(argv[optind++]);
else
capture(argv[optind++]);
}
}
} else {
if (stream == SND_PCM_STREAM_PLAYBACK)
playbackv(&argv[optind], argc - optind);
else
capturev(&argv[optind], argc - optind);
}
snd_pcm_close(pcm_handle);
return EXIT_SUCCESS;
}
/*
* Test, if it is a .VOC file and return >=0 if ok (this is the length of rest)
* < 0 if not
*/
static int test_vocfile(void *buffer)
{
VocHeader *vp = buffer;
if (strstr(vp->magic, VOC_MAGIC_STRING)) {
vocminor = vp->version & 0xFF;
vocmajor = vp->version / 256;
if (vp->version != (0x1233 - vp->coded_ver))
return -2; /* coded version mismatch */
return vp->headerlen - sizeof(VocHeader); /* 0 mostly */
}
return -1; /* magic string fail */
}
/*
* test, if it's a .WAV file, > 0 if ok (and set the speed, stereo etc.)
* == 0 if not
* Value returned is bytes to be discarded.
*/
static int test_wavefile(void *buffer, size_t size)
{
WaveHeader *h = buffer;
WaveFmtHeader *f;
WaveChunkHeader *c;
if (h->magic != WAV_RIFF || h->type != WAV_WAVE)
return 0;
c = (WaveChunkHeader*)((char *)buffer + sizeof(WaveHeader));
while (c->type != WAV_FMT) {
c = (WaveChunkHeader*)((char*)c + sizeof(*c) + LE_INT(c->length));
if ((char *)c + sizeof(*c) > (char*) buffer + size) {
fprintf(stderr, "%s: cannot found WAVE fmt chunk\n", command);
exit(EXIT_FAILURE);
}
}
f = (WaveFmtHeader*) c;
if (LE_SHORT(f->format) != WAV_PCM_CODE) {
fprintf(stderr, "%s: can't play not PCM-coded WAVE-files\n", command);
exit(EXIT_FAILURE);
}
if (LE_SHORT(f->modus) < 1) {
fprintf(stderr, "%s: can't play WAVE-files with %d tracks\n",
command, LE_SHORT(f->modus));
exit(EXIT_FAILURE);
}
format.channels = LE_SHORT(f->modus);
switch (LE_SHORT(f->bit_p_spl)) {
case 8:
format.format = SND_PCM_SFMT_U8;
break;
case 16:
format.format = SND_PCM_SFMT_S16_LE;
break;
default:
fprintf(stderr, "%s: can't play WAVE-files with sample %d bits wide\n",
command, LE_SHORT(f->bit_p_spl));
exit(EXIT_FAILURE);
}
format.rate = LE_INT(f->sample_fq);
while (c->type != WAV_DATA) {
c = (WaveChunkHeader*)((char*)c + sizeof(*c) + LE_INT(c->length));
if ((char *)c + sizeof(*c) > (char*) buffer + size) {
fprintf(stderr, "%s: cannot found WAVE data chunk\n", command);
exit(EXIT_FAILURE);
}
}
count = LE_INT(c->length);
check_new_format(&format);
return (char *)c + sizeof(*c) - (char *) buffer;
}
/*
*/
static int test_au(int fd, void *buffer)
{
AuHeader *ap = buffer;
if (ap->magic != AU_MAGIC)
return -1;
if (BE_INT(ap->hdr_size) > 128 || BE_INT(ap->hdr_size) < 24)
return -1;
count = BE_INT(ap->data_size);
switch (BE_INT(ap->encoding)) {
case AU_FMT_ULAW:
format.format = SND_PCM_SFMT_MU_LAW;
break;
case AU_FMT_LIN8:
format.format = SND_PCM_SFMT_U8;
break;
case AU_FMT_LIN16:
format.format = SND_PCM_SFMT_U16_LE;
break;
default:
return -1;
}
format.rate = BE_INT(ap->sample_rate);
if (format.rate < 2000 || format.rate > 256000)
return -1;
format.channels = BE_INT(ap->channels);
if (format.channels < 1 || format.channels > 128)
return -1;
if (read(fd, buffer + sizeof(AuHeader), BE_INT(ap->hdr_size) - sizeof(AuHeader)) < 0) {
fprintf(stderr, "%s: read error\n", command);
exit(EXIT_FAILURE);
}
check_new_format(&format);
return 0;
}
static void set_params(void)
{
snd_pcm_stream_params_t params;
align = (snd_pcm_format_physical_width(format.format) + 7) / 8;
#if 0
if (mmap_flag)
snd_pcm_munmap(pcm_handle, stream);
#endif
snd_pcm_stream_flush(pcm_handle, stream); /* to be in right state */
memset(&params, 0, sizeof(params));
params.mode = mode;
params.stream = stream;
memcpy(&params.format, &format, sizeof(format));
if (stream == SND_PCM_STREAM_PLAYBACK) {
params.start_mode = SND_PCM_START_FULL;
} else {
params.start_mode = SND_PCM_START_DATA;
}
params.xrun_mode = SND_PCM_XRUN_FLUSH;
params.frag_size = snd_pcm_format_bytes_per_second(&format) / 1000.0 * frag_length;
params.buffer_size = params.frag_size * 4;
params.bytes_min = 0;
params.bytes_xrun_max = 0;
params.fill_mode = SND_PCM_FILL_SILENCE;
params.bytes_fill_max = 1024;
params.bytes_xrun_max = 0;
if (snd_pcm_stream_params(pcm_handle, &params) < 0) {
fprintf(stderr, "%s: unable to set stream params\n", command);
exit(EXIT_FAILURE);
}
if (mmap_flag) {
if (snd_pcm_mmap(pcm_handle, stream, &mmap_control, (void **)&mmap_data)<0) {
fprintf(stderr, "%s: unable to mmap memory\n", command);
exit(EXIT_FAILURE);
}
}
if (snd_pcm_stream_prepare(pcm_handle, stream) < 0) {
fprintf(stderr, "%s: unable to prepare stream\n", command);
exit(EXIT_FAILURE);
}
memset(&setup, 0, sizeof(setup));
setup.stream = stream;
if (snd_pcm_stream_setup(pcm_handle, &setup) < 0) {
fprintf(stderr, "%s: unable to obtain setup\n", command);
exit(EXIT_FAILURE);
}
if (show_setup)
snd_pcm_dump_setup(pcm_handle, stream, stderr);
buffer_size = setup.frag_size;
audiobuf = (char *)realloc(audiobuf, buffer_size > 1024 ? buffer_size : 1024);
if (audiobuf == NULL) {
fprintf(stderr, "%s: not enough memory\n", command);
exit(EXIT_FAILURE);
}
// fprintf(stderr, "real buffer_size = %i, frags = %i, total = %i\n", buffer_size, setup.buf.block.frags, setup.buf.block.frags * buffer_size);
}
/* playback write error hander */
void playback_underrun(void)
{
snd_pcm_stream_status_t status;
memset(&status, 0, sizeof(status));
status.stream = stream;
if (snd_pcm_stream_status(pcm_handle, &status)<0) {
fprintf(stderr, "playback stream status error\n");
exit(EXIT_FAILURE);
}
if (status.status == SND_PCM_STATUS_XRUN) {
printf("underrun at position %u!!!\n", status.byte_io);
if (snd_pcm_stream_prepare(pcm_handle, SND_PCM_STREAM_PLAYBACK)<0) {
fprintf(stderr, "underrun: playback stream prepare error\n");
exit(EXIT_FAILURE);
}
return; /* ok, data should be accepted again */
}
fprintf(stderr, "write error\n");
exit(EXIT_FAILURE);
}
/* capture read error hander */
void capture_overrun(void)
{
snd_pcm_stream_status_t status;
memset(&status, 0, sizeof(status));
status.stream = stream;
if (snd_pcm_stream_status(pcm_handle, &status)<0) {
fprintf(stderr, "capture stream status error\n");
exit(EXIT_FAILURE);
}
if (status.status == SND_PCM_STATUS_RUNNING)
return; /* everything is ok, but the driver is waiting for data */
if (status.status == SND_PCM_STATUS_XRUN) {
printf("overrun at position %u!!!\n", status.byte_io);
if (snd_pcm_stream_prepare(pcm_handle, SND_PCM_STREAM_CAPTURE)<0) {
fprintf(stderr, "overrun: capture stream prepare error\n");
exit(EXIT_FAILURE);
}
return; /* ok, data should be accepted again */
}
fprintf(stderr, "read error\n");
exit(EXIT_FAILURE);
}
/*
* write function
*/
static ssize_t pcm_write(u_char *data, size_t count)
{
ssize_t r;
ssize_t result = 0;
if (mode == SND_PCM_MODE_FRAGMENT &&
count != buffer_size) {
snd_pcm_format_set_silence(format.format, data + count, buffer_size - count);
count = buffer_size;
}
while (count > 0) {
r = write_func(pcm_handle, data, count);
if (r == -EAGAIN || (r >= 0 && r < count)) {
struct pollfd pfd;
pfd.fd = snd_pcm_file_descriptor(pcm_handle, SND_PCM_STREAM_PLAYBACK);
pfd.events = POLLOUT | POLLERR;
poll(&pfd, 1, 1000);
} else if (r == -EPIPE) {
playback_underrun();
} else if (r < 0) {
fprintf(stderr, "write error: %s\n", snd_strerror(r));
exit(EXIT_FAILURE);
}
if (r > 0) {
result += r;
count -= r;
data += r;
}
}
return result;
}
static ssize_t pcm_writev(u_char **data, unsigned int channels, size_t count)
{
ssize_t r;
size_t result = 0;
if (mode == SND_PCM_MODE_FRAGMENT &&
count != buffer_size) {
unsigned int channel;
size_t offset = count / channels;
size_t remaining = (buffer_size - count) / channels;
for (channel = 0; channel < channels; channel++)
snd_pcm_format_set_silence(format.format, data[channel] + offset, remaining);
count = buffer_size;
}
while (count > 0) {
unsigned int channel;
struct iovec vec[channels];
size_t offset = result / channels;
size_t remaining = count / channels;
for (channel = 0; channel < channels; channel++) {
vec[channel].iov_base = data[channel] + offset;
vec[channel].iov_len = remaining;
}
r = writev_func(pcm_handle, vec, channels);
if (r == -EAGAIN || (r >= 0 && r < count)) {
struct pollfd pfd;
pfd.fd = snd_pcm_file_descriptor(pcm_handle, SND_PCM_STREAM_PLAYBACK);
pfd.events = POLLOUT | POLLERR;
poll(&pfd, 1, 1000);
} else if (r == -EPIPE) {
playback_underrun();
} else if (r < 0) {
fprintf(stderr, "writev error: %s\n", snd_strerror(r));
exit(EXIT_FAILURE);
}
if (r > 0) {
result += r;
count -= r;
}
}
return result;
}
/*
* read function
*/
static ssize_t pcm_read(u_char *data, size_t count)
{
ssize_t r;
size_t result = 0;
while (count > 0) {
r = read_func(pcm_handle, data, count);
if (r == -EAGAIN || (r >= 0 && r < count)) {
struct pollfd pfd;
pfd.fd = snd_pcm_file_descriptor(pcm_handle, SND_PCM_STREAM_CAPTURE);
pfd.events = POLLIN | POLLERR;
poll(&pfd, 1, 1000);
} else if (r == -EPIPE) {
capture_overrun();
} else if (r < 0) {
fprintf(stderr, "read error: %s\n", snd_strerror(r));
exit(EXIT_FAILURE);
}
if (r > 0) {
result += r;
count -= r;
data += r;
}
}
return result;
}
static ssize_t pcm_readv(u_char **data, unsigned int channels, size_t count)
{
ssize_t r;
size_t result = 0;
while (count > 0) {
unsigned int channel;
struct iovec vec[channels];
size_t offset = result / channels;
size_t remaining = count / channels;
for (channel = 0; channel < channels; channel++) {
vec[channel].iov_base = data[channel] + offset;
vec[channel].iov_len = remaining;
}
r = readv_func(pcm_handle, vec, channels);
if (r == -EAGAIN || (r >= 0 && r < count)) {
struct pollfd pfd;
pfd.fd = snd_pcm_file_descriptor(pcm_handle, SND_PCM_STREAM_CAPTURE);
pfd.events = POLLIN | POLLERR;
poll(&pfd, 1, 1000);
} else if (r == -EPIPE) {
capture_overrun();
} else if (r < 0) {
fprintf(stderr, "readv error: %s\n", snd_strerror(r));
exit(EXIT_FAILURE);
}
if (r > 0) {
result += r;
count -= r;
}
}
return result;
}
/*
* ok, let's play a .voc file
*/
static ssize_t voc_pcm_write(u_char *data, size_t count)
{
ssize_t result = count, r;
size_t size;
while (count > 0) {
size = count;
if (size > buffer_size - buffer_pos)
size = buffer_size - buffer_pos;
memcpy(audiobuf + buffer_pos, data, size);
data += size;
count -= size;
buffer_pos += size;
if (buffer_pos == buffer_size) {
if ((r = pcm_write(audiobuf, buffer_size)) != buffer_size)
return r;
buffer_pos = 0;
}
}
return result;
}
static void voc_write_silence(unsigned x)
{
unsigned l;
char *buf;
buf = (char *) malloc(buffer_size);
if (buf == NULL) {
fprintf(stderr, "%s: can allocate buffer for silence\n", command);
return; /* not fatal error */
}
snd_pcm_format_set_silence(format.format, buf, buffer_size);
while (x > 0) {
l = x;
if (l > buffer_size)
l = buffer_size;
if (voc_pcm_write(buf, l) != l) {
fprintf(stderr, "%s: write error\n", command);
exit(EXIT_FAILURE);
}
x -= l;
}
}
static void voc_pcm_flush(void)
{
if (buffer_pos > 0) {
if (mode == SND_PCM_MODE_FRAGMENT) {
if (snd_pcm_format_set_silence(format.format, audiobuf + buffer_pos, buffer_size - buffer_pos) < 0)
fprintf(stderr, "voc_pcm_flush - silence error\n");
buffer_pos = buffer_size;
}
if (pcm_write(audiobuf, buffer_pos) != buffer_pos)
fprintf(stderr, "voc_pcm_flush error\n");
}
snd_pcm_stream_flush(pcm_handle, SND_PCM_STREAM_PLAYBACK);
}
static void voc_play(int fd, int ofs, char *name)
{
int l;
VocBlockType *bp;
VocVoiceData *vd;
VocExtBlock *eb;
size_t nextblock, in_buffer;
u_char *data, *buf;
char was_extended = 0, output = 0;
u_short *sp, repeat = 0;
size_t silence;
int filepos = 0;
#define COUNT(x) nextblock -= x; in_buffer -= x; data += x
#define COUNT1(x) in_buffer -= x; data += x
data = buf = (u_char *)malloc(64 * 1024);
buffer_pos = 0;
if (data == NULL) {
fprintf(stderr, "malloc error\n");
exit(EXIT_FAILURE);
}
if (!quiet_mode) {
fprintf(stderr, "Playing Creative Labs Channel file '%s'...\n", name);
}
/* first we waste the rest of header, ugly but we don't need seek */
while (ofs > buffer_size) {
if (read(fd, buf, buffer_size) != buffer_size) {
fprintf(stderr, "%s: read error\n", command);
exit(EXIT_FAILURE);
}
ofs -= buffer_size;
}
if (ofs) {
if (read(fd, buf, ofs) != ofs) {
fprintf(stderr, "%s: read error\n", command);
exit(EXIT_FAILURE);
}
}
format.format = SND_PCM_SFMT_U8;
format.channels = 1;
format.rate = DEFAULT_SPEED;
set_params();
in_buffer = nextblock = 0;
while (1) {
Fill_the_buffer: /* need this for repeat */
if (in_buffer < 32) {
/* move the rest of buffer to pos 0 and fill the buf up */
if (in_buffer)
memcpy(buf, data, in_buffer);
data = buf;
if ((l = read(fd, buf + in_buffer, buffer_size - in_buffer)) > 0)
in_buffer += l;
else if (!in_buffer) {
/* the file is truncated, so simulate 'Terminator'
and reduce the datablock for safe landing */
nextblock = buf[0] = 0;
if (l == -1) {
perror(name);
exit(EXIT_FAILURE);
}
}
}
while (!nextblock) { /* this is a new block */
if (in_buffer < sizeof(VocBlockType))
goto __end;
bp = (VocBlockType *) data;
COUNT1(sizeof(VocBlockType));
nextblock = VOC_DATALEN(bp);
if (output && !quiet_mode)
fprintf(stderr, "\n"); /* write /n after ASCII-out */
output = 0;
switch (bp->type) {
case 0:
#if 0
d_printf("Terminator\n");
#endif
return; /* VOC-file stop */
case 1:
vd = (VocVoiceData *) data;
COUNT1(sizeof(VocVoiceData));
/* we need a SYNC, before we can set new SPEED, STEREO ... */
if (!was_extended) {
format.rate = (int) (vd->tc);
format.rate = 1000000 / (256 - format.rate);
#if 0
d_printf("Channel data %d Hz\n", dsp_speed);
#endif
if (vd->pack) { /* /dev/dsp can't it */
fprintf(stderr, "%s: can't play packed .voc files\n", command);
return;
}
if (format.channels == 2) /* if we are in Stereo-Mode, switch back */
format.channels = 1;
} else { /* there was extended block */
format.channels = 2;
was_extended = 0;
}
set_params();
break;
case 2: /* nothing to do, pure data */
#if 0
d_printf("Channel continuation\n");
#endif
break;
case 3: /* a silence block, no data, only a count */
sp = (u_short *) data;
COUNT1(sizeof(u_short));
format.rate = (int) (*data);
COUNT1(1);
format.rate = 1000000 / (256 - format.rate);
set_params();
silence = (((size_t) * sp) * 1000) / format.rate;
#if 0
d_printf("Silence for %d ms\n", (int) silence);
#endif
voc_write_silence(*sp);
break;
case 4: /* a marker for syncronisation, no effect */
sp = (u_short *) data;
COUNT1(sizeof(u_short));
#if 0
d_printf("Marker %d\n", *sp);
#endif
break;
case 5: /* ASCII text, we copy to stderr */
output = 1;
#if 0
d_printf("ASCII - text :\n");
#endif
break;
case 6: /* repeat marker, says repeatcount */
/* my specs don't say it: maybe this can be recursive, but
I don't think somebody use it */
repeat = *(u_short *) data;
COUNT1(sizeof(u_short));
#if 0
d_printf("Repeat loop %d times\n", repeat);
#endif
if (filepos >= 0) { /* if < 0, one seek fails, why test another */
if ((filepos = lseek(fd, 0, 1)) < 0) {
fprintf(stderr, "%s: can't play loops; %s isn't seekable\n",
command, name);
repeat = 0;
} else {
filepos -= in_buffer; /* set filepos after repeat */
}
} else {
repeat = 0;
}
break;
case 7: /* ok, lets repeat that be rewinding tape */
if (repeat) {
if (repeat != 0xFFFF) {
#if 0
d_printf("Repeat loop %d\n", repeat);
#endif
--repeat;
}
#if 0
else
d_printf("Neverending loop\n");
#endif
lseek(fd, filepos, 0);
in_buffer = 0; /* clear the buffer */
goto Fill_the_buffer;
}
#if 0
else
d_printf("End repeat loop\n");
#endif
break;
case 8: /* the extension to play Stereo, I have SB 1.0 :-( */
was_extended = 1;
eb = (VocExtBlock *) data;
COUNT1(sizeof(VocExtBlock));
format.rate = (int) (eb->tc);
format.rate = 256000000L / (65536 - format.rate);
format.channels = eb->mode == VOC_MODE_STEREO ? 2 : 1;
if (format.channels == 2)
format.rate = format.rate >> 1;
if (eb->pack) { /* /dev/dsp can't it */
fprintf(stderr, "%s: can't play packed .voc files\n", command);
return;
}
#if 0
d_printf("Extended block %s %d Hz\n",
(eb->mode ? "Stereo" : "Mono"), dsp_speed);
#endif
break;
default:
fprintf(stderr, "%s: unknown blocktype %d. terminate.\n",
command, bp->type);
return;
} /* switch (bp->type) */
} /* while (! nextblock) */
/* put nextblock data bytes to dsp */
l = in_buffer;
if (nextblock < l)
l = nextblock;
if (l) {
if (output && !quiet_mode) {
if (write(2, data, l) != l) { /* to stderr */
fprintf(stderr, "%s: write error\n", command);
exit(EXIT_FAILURE);
}
} else {
if (voc_pcm_write(data, l) != l) {
fprintf(stderr, "%s: write error\n", command);
exit(EXIT_FAILURE);
}
}
COUNT(l);
}
} /* while(1) */
__end:
voc_pcm_flush();
free(buf);
}
/* that was a big one, perhaps somebody split it :-) */
/* setting the globals for playing raw data */
static void init_raw_data(void)
{
format = rformat;
}
/* calculate the data count to read from/to dsp */
static size_t calc_count(void)
{
size_t count;
if (!timelimit) {
count = 0x7fffffff;
} else {
count = snd_pcm_format_size(format.format,
timelimit * format.rate *
format.channels);
}
return count;
}
/* write a .VOC-header */
static void begin_voc(int fd, size_t cnt)
{
VocHeader vh;
VocBlockType bt;
VocVoiceData vd;
VocExtBlock eb;
strncpy(vh.magic, VOC_MAGIC_STRING, 20);
vh.magic[19] = 0x1A;
vh.headerlen = sizeof(VocHeader);
vh.version = VOC_ACTUAL_VERSION;
vh.coded_ver = 0x1233 - VOC_ACTUAL_VERSION;
if (write(fd, &vh, sizeof(VocHeader)) != sizeof(VocHeader)) {
fprintf(stderr, "%s: write error\n", command);
exit(EXIT_FAILURE);
}
if (format.channels > 1) {
/* write a extended block */
bt.type = 8;
bt.datalen = 4;
bt.datalen_m = bt.datalen_h = 0;
if (write(fd, &bt, sizeof(VocBlockType)) != sizeof(VocBlockType)) {
fprintf(stderr, "%s: write error\n", command);
exit(EXIT_FAILURE);
}
eb.tc = (u_short) (65536 - 256000000L / (format.rate << 1));
eb.pack = 0;
eb.mode = 1;
if (write(fd, &eb, sizeof(VocExtBlock)) != sizeof(VocExtBlock)) {
fprintf(stderr, "%s: write error\n", command);
exit(EXIT_FAILURE);
}
}
bt.type = 1;
cnt += sizeof(VocVoiceData); /* Channel_data block follows */
bt.datalen = (u_char) (cnt & 0xFF);
bt.datalen_m = (u_char) ((cnt & 0xFF00) >> 8);
bt.datalen_h = (u_char) ((cnt & 0xFF0000) >> 16);
if (write(fd, &bt, sizeof(VocBlockType)) != sizeof(VocBlockType)) {
fprintf(stderr, "%s: write error\n", command);
exit(EXIT_FAILURE);
}
vd.tc = (u_char) (256 - (1000000 / format.rate));
vd.pack = 0;
if (write(fd, &vd, sizeof(VocVoiceData)) != sizeof(VocVoiceData)) {
fprintf(stderr, "%s: write error\n", command);
exit(EXIT_FAILURE);
}
}
/* write a WAVE-header */
static void begin_wave(int fd, size_t cnt)
{
WaveHeader h;
WaveFmtHeader f;
WaveChunkHeader c;
int bits;
u_int tmp;
u_short tmp2;
bits = 8;
switch (format.format) {
case SND_PCM_SFMT_U8:
bits = 8;
break;
case SND_PCM_SFMT_S16_LE:
bits = 16;
break;
default:
fprintf(stderr, "%s: Wave doesn't support %s format...\n", command, snd_pcm_get_format_name(format.format));
exit(EXIT_FAILURE);
}
h.magic = WAV_RIFF;
tmp = cnt + sizeof(WaveHeader) + sizeof(WaveFmtHeader) + sizeof(WaveChunkHeader) - 8;
h.length = LE_INT(tmp);
h.type = WAV_WAVE;
f.type = WAV_FMT;
f.length = LE_INT(16);
f.format = LE_INT(WAV_PCM_CODE);
f.modus = LE_SHORT(format.channels);
f.sample_fq = LE_INT(format.rate);
#if 0
tmp2 = (samplesize == 8) ? 1 : 2;
f.byte_p_spl = LE_SHORT(tmp2);
tmp2 = dsp_speed * format.channels * tmp2;
f.byte_p_sec = LE_SHORT(tmp2);
#else
tmp2 = format.channels * ((bits + 7) / 8);
f.byte_p_spl = LE_SHORT(tmp2);
tmp2 = tmp2 * format.rate;
f.byte_p_sec = LE_SHORT(tmp2);
#endif
f.bit_p_spl = LE_SHORT(bits);
c.type = WAV_DATA;
c.length = LE_INT(cnt);
if (write(fd, &h, sizeof(WaveHeader)) != sizeof(WaveHeader) ||
write(fd, &f, sizeof(WaveFmtHeader)) != sizeof(WaveFmtHeader) ||
write(fd, &c, sizeof(WaveChunkHeader)) != sizeof(WaveChunkHeader)) {
fprintf(stderr, "%s: write error\n", command);
exit(EXIT_FAILURE);
}
}
/* write a Au-header */
static void begin_au(int fd, size_t cnt)
{
AuHeader ah;
ah.magic = AU_MAGIC;
ah.hdr_size = BE_INT(24);
ah.data_size = BE_INT(cnt);
switch (format.format) {
case SND_PCM_SFMT_MU_LAW:
ah.encoding = BE_INT(AU_FMT_ULAW);
break;
case SND_PCM_SFMT_U8:
ah.encoding = BE_INT(AU_FMT_LIN8);
break;
case SND_PCM_SFMT_S16_LE:
ah.encoding = BE_INT(AU_FMT_LIN16);
break;
default:
fprintf(stderr, "%s: Sparc Audio doesn't support %s format...\n", command, snd_pcm_get_format_name(format.format));
exit(EXIT_FAILURE);
}
ah.sample_rate = BE_INT(format.rate);
ah.channels = BE_INT(format.channels);
if (write(fd, &ah, sizeof(AuHeader)) != sizeof(AuHeader)) {
fprintf(stderr, "%s: write error\n", command);
exit(EXIT_FAILURE);
}
}
/* closing .VOC */
static void end_voc(int fd)
{
char dummy = 0; /* Write a Terminator */
if (write(fd, &dummy, 1) != 1) {
fprintf(stderr, "%s: write error", command);
exit(EXIT_FAILURE);
}
if (fd != 1)
close(fd);
}
static void end_wave(int fd)
{ /* only close output */
if (fd != 1)
close(fd);
}
static void header(int rtype, char *name)
{
if (!quiet_mode) {
fprintf(stderr, "%s %s '%s' : ",
(stream == SND_PCM_STREAM_PLAYBACK) ? "Playing" : "Recording",
fmt_rec_table[rtype].what,
name);
fprintf(stderr, "%s, ", snd_pcm_get_format_description(format.format));
fprintf(stderr, "Rate %d Hz, ", format.rate);
if (format.channels == 1)
fprintf(stderr, "Mono");
else if (format.channels == 2)
fprintf(stderr, "Stereo");
else
fprintf(stderr, "Channels %i", format.channels);
fprintf(stderr, "\n");
}
}
/* playing raw data */
void playback_go(int fd, size_t loaded, size_t count, int rtype, char *name)
{
int l, r;
size_t written = 0;
size_t c;
header(rtype, name);
set_params();
while (loaded > buffer_size && written < count) {
if (pcm_write(audiobuf + written, buffer_size) <= 0)
return;
written += buffer_size;
loaded -= buffer_size;
}
if (written > 0 && loaded > 0)
memmove(audiobuf, audiobuf + written, loaded);
l = loaded;
while (written < count) {
do {
c = count - written;
if (c > buffer_size)
c = buffer_size;
c -= l;
if (c == 0)
break;
r = read(fd, audiobuf + l, c);
if (r < 0) {
perror(name);
exit(EXIT_FAILURE);
}
if (r == 0)
break;
l += r;
} while (mode != SND_PCM_MODE_FRAME && l < buffer_size);
r = pcm_write(audiobuf, l);
if (r != l)
break;
written += r;
l = 0;
}
snd_pcm_stream_flush(pcm_handle, SND_PCM_STREAM_PLAYBACK);
}
/* captureing raw data, this proc handels WAVE files and .VOCs (as one block) */
void capture_go(int fd, size_t count, int rtype, char *name)
{
size_t c;
ssize_t r;
header(rtype, name);
set_params();
while (count > 0) {
c = count;
if (c > buffer_size)
c = buffer_size;
if ((r = pcm_read(audiobuf, c)) != c)
break;
if (write(fd, audiobuf, r) != r) {
perror(name);
exit(EXIT_FAILURE);
}
count -= r;
}
}
/*
* let's play or capture it (capture_type says VOC/WAVE/raw)
*/
static void playback(char *name)
{
int fd, ofs;
snd_pcm_stream_flush(pcm_handle, SND_PCM_STREAM_PLAYBACK);
if (!name || !strcmp(name, "-")) {
fd = 0;
name = "stdin";
} else {
if ((fd = open(name, O_RDONLY, 0)) == -1) {
perror(name);
exit(EXIT_FAILURE);
}
}
/* read the file header */
if (read(fd, audiobuf, sizeof(AuHeader)) != sizeof(AuHeader)) {
fprintf(stderr, "%s: read error", command);
exit(EXIT_FAILURE);
}
if (test_au(fd, audiobuf) >= 0) {
rformat.format = SND_PCM_SFMT_MU_LAW;
playback_go(fd, 0, count, FORMAT_AU, name);
goto __end;
}
if (read(fd, audiobuf + sizeof(AuHeader),
sizeof(VocHeader) - sizeof(AuHeader)) !=
sizeof(VocHeader) - sizeof(AuHeader)) {
fprintf(stderr, "%s: read error", command);
exit(EXIT_FAILURE);
}
if ((ofs = test_vocfile(audiobuf)) >= 0) {
voc_play(fd, ofs, name);
goto __end;
}
/* read bytes for WAVE-header */
if (read(fd, audiobuf + sizeof(VocHeader),
64 - sizeof(VocHeader)) !=
64 - sizeof(VocHeader)) {
fprintf(stderr, "%s: read error", command);
exit(EXIT_FAILURE);
}
if ((ofs = test_wavefile(audiobuf, 64)) > 0) {
memmove(audiobuf, audiobuf + ofs, 64 - ofs);
playback_go(fd, 64 - ofs, count, FORMAT_WAVE, name);
} else {
/* should be raw data */
check_new_format(&rformat);
init_raw_data();
count = calc_count();
playback_go(fd, 64, count, FORMAT_RAW, name);
}
__end:
if (fd != 0)
close(fd);
}
static void capture(char *name)
{
int fd;
snd_pcm_stream_flush(pcm_handle, SND_PCM_STREAM_CAPTURE);
if (!name || !strcmp(name, "-")) {
fd = 1;
name = "stdout";
} else {
remove(name);
if ((fd = open(name, O_WRONLY | O_CREAT, 0644)) == -1) {
perror(name);
exit(EXIT_FAILURE);
}
}
count = calc_count() & 0xFFFFFFFE;
/* WAVE-file should be even (I'm not sure), but wasting one byte
isn't a problem (this can only be in 8 bit mono) */
if (fmt_rec_table[active_format].start)
fmt_rec_table[active_format].start(fd, count);
check_new_format(&rformat);
capture_go(fd, count, active_format, name);
fmt_rec_table[active_format].end(fd);
}
void playbackv_go(int* fds, unsigned int channels, size_t loaded, size_t count, int rtype, char **names)
{
int r;
size_t vsize;
unsigned int channel;
u_char *bufs[channels];
header(rtype, names[0]);
set_params();
vsize = buffer_size / channels;
// Not yet implemented
assert(loaded == 0);
for (channel = 0; channel < channels; ++channel)
bufs[channel] = audiobuf + vsize * channel;
while (count > 0) {
size_t c = 0;
size_t expected = count / channels;
if (expected > vsize)
expected = vsize;
do {
r = read(fds[0], bufs[0], expected);
if (r < 0) {
perror(names[channel]);
exit(EXIT_FAILURE);
}
for (channel = 1; channel < channels; ++channel) {
if (read(fds[channel], bufs[channel], r) != r) {
perror(names[channel]);
exit(EXIT_FAILURE);
}
}
if (r == 0)
break;
c += r;
} while (mode != SND_PCM_MODE_FRAME && c < expected);
r = pcm_writev(bufs, channels, c * channels);
if (r != c * channels)
break;
count -= r;
}
snd_pcm_stream_flush(pcm_handle, SND_PCM_STREAM_PLAYBACK);
}
void capturev_go(int* fds, unsigned int channels, size_t count, int rtype, char **names)
{
size_t c;
ssize_t r;
unsigned int channel;
size_t vsize;
u_char *bufs[channels];
header(rtype, names[0]);
set_params();
vsize = buffer_size / channels;
for (channel = 0; channel < channels; ++channel)
bufs[channel] = audiobuf + vsize * channel;
while (count > 0) {
size_t rv;
c = count;
if (c > buffer_size)
c = buffer_size;
if ((r = pcm_readv(bufs, channels, c)) != c)
break;
rv = r / channels;
for (channel = 0; channel < channels; ++channel) {
if (write(fds[channel], bufs[channel], rv) != rv) {
perror(names[channel]);
exit(EXIT_FAILURE);
}
}
count -= r;
}
}
static void playbackv(char **names, unsigned int count)
{
int ret = 0;
unsigned int channel;
unsigned int channels = rformat.channels;
int alloced = 0;
int fds[channels];
for (channel = 0; channel < channels; ++channel)
fds[channel] = -1;
snd_pcm_stream_flush(pcm_handle, SND_PCM_STREAM_PLAYBACK);
if (count == 1) {
size_t len = strlen(names[0]);
char format[1024];
memcpy(format, names[0], len);
strcpy(format + len, ".%d");
len += 4;
names = malloc(sizeof(*names) * channels);
for (channel = 0; channel < channels; ++channel) {
names[channel] = malloc(len);
sprintf(names[channel], format, channel);
}
alloced = 1;
} else if (count != channels) {
fprintf(stderr, "You need to specify %d files\n", channels);
exit(EXIT_FAILURE);
}
for (channel = 0; channel < channels; ++channel) {
fds[channel] = open(names[channel], O_RDONLY, 0);
if (fds[channel] < 0) {
perror(names[channel]);
ret = EXIT_FAILURE;
goto __end;
}
}
/* should be raw data */
check_new_format(&rformat);
init_raw_data();
count = calc_count();
playbackv_go(fds, channels, 0, count, FORMAT_RAW, names);
__end:
for (channel = 0; channel < channels; ++channel) {
if (fds[channel] >= 0)
close(fds[channel]);
if (alloced)
free(names[channel]);
}
if (alloced)
free(names);
if (ret)
exit(ret);
}
static void capturev(char **names, unsigned int count)
{
int ret = 0;
unsigned int channel;
unsigned int channels = rformat.channels;
int alloced = 0;
int fds[channels];
for (channel = 0; channel < channels; ++channel)
fds[channel] = -1;
snd_pcm_stream_flush(pcm_handle, SND_PCM_STREAM_CAPTURE);
if (count == 1) {
size_t len = strlen(names[0]);
char format[1024];
memcpy(format, names[0], len);
strcpy(format + len, ".%d");
len += 4;
names = malloc(sizeof(*names) * channels);
for (channel = 0; channel < channels; ++channel) {
names[channel] = malloc(len);
sprintf(names[channel], format, channel);
}
alloced = 1;
} else if (count != channels) {
fprintf(stderr, "You need to specify %d files\n", channels);
exit(EXIT_FAILURE);
}
for (channel = 0; channel < channels; ++channel) {
fds[channel] = open(names[channel], O_WRONLY + O_CREAT, 0644);
if (fds[channel] < 0) {
perror(names[channel]);
ret = EXIT_FAILURE;
goto __end;
}
}
/* should be raw data */
check_new_format(&rformat);
init_raw_data();
count = calc_count();
capturev_go(fds, channels, count, FORMAT_RAW, names);
__end:
for (channel = 0; channel < channels; ++channel) {
if (fds[channel] >= 0)
close(fds[channel]);
if (alloced)
free(names[channel]);
}
if (alloced)
free(names);
if (ret)
exit(ret);
}
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