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alsa-utils/aplay/aplay.c

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Initial revision
1998-08-13 17:43:39 +02:00
/*
* aplay.c - plays and records
*
* CREATIVE LABS VOICE-files
* Microsoft WAVE-files
* SPARC AUDIO .AU-files
* Raw Data
*
* Copyright (c) by Jaroslav Kysela <perex@jcu.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 <sys/soundlib.h>
#include "config.h"
#include "formats.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 */
char *command;
void *pcm_handle;
struct snd_pcm_playback_info pinfo;
struct snd_pcm_record_info rinfo;
snd_pcm_format_t rformat, format;
int timelimit = 0;
int quiet_mode = 0;
int verbose_mode = 0;
int active_format = FORMAT_DEFAULT;
int direction = SND_PCM_OPEN_PLAYBACK;
char *audiobuf = NULL;
int buffer_size = -1;
int count;
int vocmajor, vocminor;
/* needed prototypes */
static void playback( char *filename );
static void record( char *filename );
static void begin_voc( int fd, u_long count );
static void end_voc( int fd );
static void begin_wave( int fd, u_long count );
static void end_wave( int fd );
static void begin_au( int fd, u_long count );
struct fmt_record {
void (*start)(int fd, u_long 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 char *get_format( int format )
{
static char *formats[] = {
"Mu-Law",
"A-Law",
"Ima-ADPCM",
"Unsigned 8-bit",
"Signed 16-bit Little Endian",
"Signed 16-bit Big Endian",
"Signed 8-bit",
"Unsigned 16-bit Little Endian",
"Unsigned 16-bit Big Endian",
"MPEG",
"GSM"
};
if ( format < 0 || format > SND_PCM_SFMT_GSM )
return "Unknown";
return formats[ format ];
}
static void check_new_format( snd_pcm_format_t *format )
{
if ( direction == SND_PCM_OPEN_PLAYBACK ) {
if ( pinfo.min_rate > format -> rate || pinfo.max_rate < format -> rate ) {
fprintf( stderr, "%s: unsupported rate %iHz for playback (valid range is %iHz-%iHz)\n", command, format -> rate, pinfo.min_rate, pinfo.max_rate );
exit( 1 );
}
if ( format -> format != SND_PCM_SFMT_MU_LAW )
if ( !(pinfo.formats & (1 << format -> format)) ) {
fprintf( stderr, "%s: requested format %s isn't supported with hardware\n", command, get_format( format -> format ) );
exit( 1 );
}
} else {
if ( rinfo.min_rate > format -> rate || rinfo.max_rate < format -> rate ) {
fprintf( stderr, "%s: unsupported rate %iHz for record (valid range is %iHz-%iHz)\n", command, format -> rate, rinfo.min_rate, rinfo.max_rate );
exit( 1 );
}
if ( format -> format != SND_PCM_SFMT_MU_LAW )
if ( !(rinfo.formats & (1 << format -> format)) ) {
fprintf( stderr, "%s: requested format %s isn't supported with hardware\n", command, get_format( rformat.format ) );
exit( 1 );
}
}
}
static void usage( char *command )
{
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 (1-%i), defaults to 1\n"
" -d <device> select device #, defaults to 0\n"
" -q quiet mode\n"
" -v file format Voc\n"
" -u file format Sparc Audio (.au)\n"
" -w file format Wave\n"
" -r file format Raw\n"
" -S stereo\n"
" -t <secs> timelimit (seconds)\n"
" -s <Hz> speed (Hz)\n"
" -b <bits> sample size (8,16 bits)\n"
" -m set CD-ROM quality (44100Hz,stereo,16-bit linear)\n"
" -M set DAT quality (48000Hz,stereo,16-bit linear)\n"
" -p <type> compression type (alaw, ulaw, adpcm)\n"
, command, snd_cards() );
}
static void device_list( void )
{
void *handle;
int card, err, dev, idx;
unsigned int mask;
struct snd_ctl_hw_info info;
snd_pcm_info_t pcminfo;
snd_pcm_playback_info_t playinfo;
snd_pcm_record_info_t recinfo;
mask = snd_cards_mask();
if ( !mask ) {
printf( "%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 ) {
printf( "Error: control open (%i): %s\n", card, snd_strerror( err ) );
continue;
}
if ( (err = snd_ctl_hw_info( handle, &info )) < 0 ) {
printf( "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 ) {
printf( "Error: control digital audio info (%i): %s\n", card, snd_strerror( err ) );
continue;
}
printf( "%s: %i [%s] / #%i: %s\n",
info.name,
card + 1,
info.id,
dev,
pcminfo.name );
printf( " Directions: %s%s%s\n",
pcminfo.flags & SND_PCM_INFO_PLAYBACK ? "playback " : "",
pcminfo.flags & SND_PCM_INFO_RECORD ? "record " : "",
pcminfo.flags & SND_PCM_INFO_DUPLEX ? "duplex " : "" );
if ( (err = snd_ctl_pcm_playback_info( handle, dev, &playinfo )) < 0 ) {
printf( "Error: control digital audio playback info (%i): %s\n", card, snd_strerror( err ) );
continue;
}
if ( pcminfo.flags & SND_PCM_INFO_PLAYBACK ) {
printf( " Playback:\n" );
printf( " Speed range: %iHz-%iHz\n", playinfo.min_rate, playinfo.max_rate );
printf( " Voices range: %i-%i\n", playinfo.min_channels, playinfo.max_channels );
printf( " Formats:\n" );
for ( idx = 0; idx < SND_PCM_SFMT_GSM; idx++ ) {
if ( playinfo.formats & (1 << idx) )
printf( " %s\n", get_format( idx ) );
}
if ( (err = snd_ctl_pcm_record_info( handle, dev, &recinfo )) < 0 ) {
printf( "Error: control digital audio record info (%i): %s\n", card, snd_strerror( err ) );
continue;
}
}
if ( pcminfo.flags & SND_PCM_INFO_RECORD ) {
printf( " Record:\n" );
printf( " Speed range: %iHz-%iHz\n", recinfo.min_rate, recinfo.max_rate );
printf( " Voices range: %i-%i\n", recinfo.min_channels, recinfo.max_channels );
printf( " Formats:\n" );
for ( idx = 0; idx < SND_PCM_SFMT_GSM; idx++ ) {
if ( recinfo.formats & (1 << idx) )
printf( " %s\n", get_format( idx ) );
}
}
}
snd_ctl_close( handle );
}
}
static void version( void )
{
printf( "%s: version " SND_UTIL_VERSION " by Jaroslav Kysela <perex@jcu.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_RECORD;
active_format = FORMAT_WAVE;
command = "Arecord";
} else if ( strstr( argv[0], "aplay" ) ) {
direction = SND_PCM_OPEN_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.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:So:t:b:vrwuxB:c:p:mM" )) != 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 'S':
rformat.channels = 2;
break;
case 'o':
tmp = atoi( optarg );
if ( tmp < 1 || tmp > 32 ) {
fprintf( stderr, "Error: value %i for channels is invalid\n", tmp );
return 1;
}
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 'u':
active_format = FORMAT_AU;
rformat.format = SND_PCM_SFMT_MU_LAW;
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 'b':
tmp = atoi( optarg );
switch( tmp ) {
case 8:
rformat.format = SND_PCM_SFMT_U8;
break;
case 16:
rformat.format = SND_PCM_SFMT_S16_LE;
break;
}
break;
case 'x':
verbose_mode = 1; quiet_mode = 0;
break;
case 'p':
if ( !strcmp( optarg, "alaw" ) ) {
rformat.format = SND_PCM_SFMT_A_LAW;
active_format = FORMAT_RAW;
break;
} else if ( !strcmp( optarg, "ulaw" ) || !strcmp( optarg, "mulaw" ) ) {
rformat.format = SND_PCM_SFMT_MU_LAW;
active_format = FORMAT_RAW;
break;
} if ( !strcmp( optarg, "adpcm" ) ) {
rformat.format = SND_PCM_SFMT_IMA_ADPCM;
active_format = FORMAT_RAW;
break;
}
fprintf( stderr, "Error: wrong extended format '%s'\n", optarg );
return 1;
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;
default:
usage( command );
return 1;
}
if ( !quiet_mode )
version();
if ( (err = snd_pcm_open( &pcm_handle, card, dev, direction )) < 0 ) {
fprintf( stderr, "Error: audio open error: %s\n", snd_strerror( err ) );
return 1;
}
if ( direction == SND_PCM_OPEN_PLAYBACK ) {
if ( (err = snd_pcm_playback_info( pcm_handle, &pinfo )) < 0 ) {
fprintf( stderr, "Error: playback info error: %s\n", snd_strerror( err ) );
return 1;
}
tmp = pinfo.buffer_size;
tmp /= 4; /* 4 fragments are best */
} else {
if ( (err = snd_pcm_record_info( pcm_handle, &rinfo )) < 0 ) {
fprintf( stderr, "Error: record info error: %s\n", snd_strerror( err ) );
return 1;
}
tmp = rinfo.buffer_size;
tmp /= 8; /* 8 fragments are best */
}
buffer_size = tmp;
if (buffer_size < 512 || buffer_size > 16L * 1024L * 1024L ) {
fprintf( stderr, "Error: Invalid audio buffer size %d\n", buffer_size );
return 1;
}
check_new_format( &rformat );
format = rformat;
if ( (audiobuf = malloc( buffer_size )) == NULL ) {
fprintf( stderr, "%s: unable to allocate input/output buffer\n", command );
return 1;
}
if ( optind > argc - 1 ) {
if ( direction == SND_PCM_OPEN_PLAYBACK )
playback( NULL );
else
record( NULL );
} else {
while ( optind <= argc - 1 ) {
if ( direction == SND_PCM_OPEN_PLAYBACK )
playback( argv[optind++] );
else
record( argv[optind++] );
}
}
snd_pcm_close( pcm_handle );
return 0;
}
/*
* 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
*/
static int test_wavefile( void *buffer )
{
WaveHeader *wp = buffer;
if (wp->main_chunk == WAV_RIFF && wp->chunk_type == WAV_WAVE &&
wp->sub_chunk == WAV_FMT && wp->data_chunk == WAV_DATA) {
if (wp->format != WAV_PCM_CODE) {
fprintf( stderr, "%s: can't play not PCM-coded WAVE-files\n", command);
exit( 1 );
}
if (wp -> modus < 1 || wp->modus > 32) {
fprintf(stderr, "%s: can't play WAVE-files with %d tracks\n",
command, wp->modus);
exit( 1 );
}
format.channels = wp->modus;
switch ( wp->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, wp->bit_p_spl);
}
format.rate = wp -> sample_fq;
count = wp -> data_length;
check_new_format( &format );
return 0;
}
return -1;
}
/*
*
*/
static int test_au( int fd, void *buffer )
{
AuHeader *ap = buffer;
if ( ntohl( ap -> magic ) != AU_MAGIC )
return -1;
if ( ntohl( ap -> hdr_size ) > 128 || ntohl( ap -> hdr_size ) < 24 )
return -1;
count = ntohl( ap -> data_size );
switch ( ntohl( 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 = ntohl( ap -> sample_rate );
if ( format.rate < 2000 || format.rate > 256000 ) return -1;
format.channels = ntohl( ap -> channels );
if ( format.channels < 1 || format.channels > 128 ) return -1;
if ( read( fd, buffer + sizeof( AuHeader ), ntohl( ap -> hdr_size ) - sizeof( AuHeader ) ) < 0 ) {
fprintf( stderr, "%s: read error\n", command );
exit( 1 );
}
check_new_format( &format );
return 0;
}
/*
* writing zeros from the zerobuf to simulate silence,
* perhaps it's enough to use a long var instead of zerobuf ?
*/
static void write_zeros( unsigned x )
{
unsigned l;
char *buf;
buf = (char *)malloc( buffer_size );
if ( !buf ) {
fprintf( stderr, "%s: can allocate buffer for zeros\n", command );
return; /* not fatal error */
}
memset( buf, 128, buffer_size );
while ( x > 0 ) {
l = x;
if ( l > buffer_size ) l = buffer_size;
if ( snd_pcm_write( pcm_handle, buf, l ) != l ) {
fprintf( stderr, "%s: write error\n", command );
exit( 1 );
}
x -= l;
}
}
static void set_format(void)
{
unsigned int bps; /* bytes per second */
unsigned int size; /* fragment size */
struct snd_pcm_playback_params pparams;
struct snd_pcm_record_params rparams;
bps = format.rate * format.channels;
switch ( format.format ) {
case SND_PCM_SFMT_U16_LE:
case SND_PCM_SFMT_U16_BE:
bps <<= 1;
break;
case SND_PCM_SFMT_IMA_ADPCM:
bps >>= 2;
break;
}
bps >>= 2; /* ok.. this buffer should be 0.25 sec */
if ( bps < 16 ) bps = 16;
size = buffer_size;
while ( size > bps ) size >>= 1;
if ( size < 16 ) size = 16;
if ( direction == SND_PCM_OPEN_PLAYBACK ) {
if ( snd_pcm_playback_format( pcm_handle, &format ) < 0 ) {
fprintf( stderr, "%s: unable to set playback format %s, %iHz, %i voices\n", command, get_format( format.format ), format.rate, format.channels );
exit( 1 );
}
memset( &pparams, 0, sizeof( pparams ) );
pparams.fragment_size = size;
pparams.fragments_max = -1; /* little trick */
pparams.fragments_room = 1;
if ( snd_pcm_playback_params( pcm_handle, &pparams ) < 0 ) {
fprintf( stderr, "%s: unable to set playback params\n", command );
exit( 1 );
}
} else {
if ( snd_pcm_record_format( pcm_handle, &format ) < 0 ) {
fprintf( stderr, "%s: unable to set record format %s, %iHz, %i voices\n", command, get_format( format.format ), format.rate, format.channels );
exit( 1 );
}
memset( &rparams, 0, sizeof( rparams ) );
rparams.fragment_size = size;
rparams.fragments_min = 1;
if ( snd_pcm_record_params( pcm_handle, &rparams ) < 0 ) {
fprintf( stderr, "%s: unable to set record params\n", command );
exit( 1 );
}
}
}
/*
* ok, let's play a .voc file
*/
static void voc_play( int fd, int ofs, char *name )
{
int l;
VocBlockType *bp;
VocVoiceData *vd;
VocExtBlock *eb;
u_long nextblock, in_buffer;
u_char *data = audiobuf;
char was_extended = 0, output = 0;
u_short *sp, repeat = 0;
u_long silence;
int filepos = 0;
#define COUNT(x) nextblock -= x; in_buffer -=x ;data += x
#define COUNT1(x) in_buffer -=x ;data += x
if ( !quiet_mode ) {
fprintf( stderr, "Playing Creative Labs Voice 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, audiobuf, buffer_size ) != buffer_size ) {
fprintf( stderr, "%s: read error\n", command );
exit( 1 );
}
ofs -= buffer_size;
}
if (ofs)
if ( read( fd, audiobuf, ofs ) != ofs ) {
fprintf( stderr, "%s: read error\n", command );
exit( 1 );
}
format.format = SND_PCM_SFMT_U8;
format.channels = 1;
format.rate = DEFAULT_SPEED;
set_format();
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 audiobuf up */
if (in_buffer)
memcpy (audiobuf, data, in_buffer);
data = audiobuf;
if ((l = read (fd, audiobuf + 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 save landing */
nextblock = audiobuf[0] = 0;
if (l == -1) {
perror (name);
exit (-1);
}
}
}
while (! nextblock) { /* this is a new block */
if (in_buffer<sizeof(VocBlockType)) return;
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 ("Voice 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;
set_format();
}
}
else { /* there was extended block */
format.channels = 2;
was_extended = 0;
}
set_format();
break;
case 2: /* nothing to do, pure data */
#if 0
d_printf ("Voice 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_format();
silence = ( ((u_long)*sp) * 1000) / format.rate;
#if 0
d_printf ("Silence for %d ms\n", (int)silence);
#endif
write_zeros (*sp);
snd_pcm_flush_playback( pcm_handle );
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(1);
}
} else {
if (snd_pcm_write(pcm_handle, data, l) != l) {
fprintf( stderr, "%s: write error\n", command );
exit(1);
}
}
COUNT(l);
}
} /* while(1) */
}
/* 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 u_long calc_count(void)
{
u_long count;
if (!timelimit)
count = 0x7fffffff;
else {
count = timelimit * format.rate * format.channels;
switch ( format.format ) {
case SND_PCM_SFMT_S16_LE:
case SND_PCM_SFMT_S16_BE:
case SND_PCM_SFMT_U16_LE:
case SND_PCM_SFMT_U16_BE:
count *= 2;
break;
case SND_PCM_SFMT_IMA_ADPCM:
count /= 4;
break;
}
}
return count;
}
/* write a .VOC-header */
static void begin_voc( int fd, u_long 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(1);
}
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(1);
}
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(1);
}
}
bt.type = 1;
cnt += sizeof(VocVoiceData); /* Voice_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(1);
}
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(1);
}
}
/* write a WAVE-header */
static void begin_wave(int fd, u_long cnt)
{
WaveHeader wh;
int bits;
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, get_format( format.format ) );
exit( 1 );
}
wh.main_chunk = WAV_RIFF;
wh.length = cnt + sizeof(WaveHeader) - 8;
wh.chunk_type = WAV_WAVE;
wh.sub_chunk = WAV_FMT;
wh.sc_len = 16;
wh.format = WAV_PCM_CODE;
wh.modus = format.channels;
wh.sample_fq = format.rate;
#if 0
wh.byte_p_spl = (samplesize == 8) ? 1 : 2;
wh.byte_p_sec = dsp_speed * wh.modus * wh.byte_p_spl;
#else
wh.byte_p_spl = wh.modus * ((bits + 7) / 8);
wh.byte_p_sec = wh.byte_p_spl * format.rate;
#endif
wh.bit_p_spl = bits;
wh.data_chunk = WAV_DATA;
wh.data_length= cnt;
if ( write (fd, &wh, sizeof(WaveHeader)) != sizeof( WaveHeader ) ) {
fprintf( stderr, "%s: write error\n", command );
exit(1);
}
}
/* write a Au-header */
static void begin_au(int fd, u_long cnt)
{
AuHeader ah;
ah.magic = htonl( AU_MAGIC );
ah.hdr_size = htonl( 24 );
ah.data_size = htonl( cnt );
switch ( format.format ) {
case SND_PCM_SFMT_MU_LAW:
ah.encoding = htonl( AU_FMT_ULAW );
break;
case SND_PCM_SFMT_U8:
ah.encoding = htonl( AU_FMT_LIN8 );
break;
case SND_PCM_SFMT_U16_LE:
ah.encoding = htonl( AU_FMT_LIN16 );
break;
default:
fprintf( stderr, "%s: Sparc Audio doesn't support %s format...\n", command, get_format( format.format ) );
exit( 1 );
}
ah.sample_rate = htonl( format.rate );
ah.channels = htonl( format.channels );
if ( write (fd, &ah, sizeof(AuHeader)) != sizeof( AuHeader ) ) {
fprintf( stderr, "%s: write error\n", command );
exit(1);
}
}
/* 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( 1 );
}
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' : ",
(direction == SND_PCM_OPEN_PLAYBACK) ? "Playing" : "Recording",
fmt_rec_table[rtype].what,
name );
fprintf (stderr, "%s, ", get_format( format.format ) );
fprintf (stderr, "Speed %d Hz, ", format.rate);
if ( format.channels == 1 )
fprintf (stderr, "Mono" );
else if ( format.channels == 2 )
fprintf (stderr, "Stereo" );
else fprintf (stderr, "Voices %i", format.channels);
fprintf (stderr, "\n" );
}
}
/* playing raw data */
void playback_go (int fd, int loaded, u_long count, int rtype, char *name)
{
int l;
u_long c;
header( rtype, name );
set_format();
while (count) {
c = count;
if (c > buffer_size)
c = buffer_size;
if ((l = read (fd, audiobuf + loaded, c - loaded)) > 0) {
l += loaded; loaded = 0; /* correct the count; ugly but ... */
#if 0
sleep( 1 );
#endif
if (snd_pcm_write(pcm_handle, audiobuf, l) != l) {
fprintf( stderr, "write error\n" );
exit (1);
}
count -= l;
} else {
if (l == -1) {
perror (name);
exit (-1);
}
count = 0; /* Stop */
}
} /* while (count) */
}
/* recording raw data, this proc handels WAVE files and .VOCs (as one block) */
void record_go(int fd, int loaded, u_long count, int rtype, char *name)
{
int l;
u_long c;
header( rtype, name );
set_format();
while (count) {
c = count;
if (c > buffer_size)
c = buffer_size;
if ((l = snd_pcm_read(pcm_handle, audiobuf, c)) > 0) {
if (write (fd, audiobuf, l) != l) {
perror (name);
exit (-1);
}
count -= l;
}
if (l == -1) {
fprintf( stderr, "read error\n" );
exit (-1);
}
}
}
/*
* let's play or record it (record_type says VOC/WAVE/raw)
*/
static void playback(char *name)
{
int fd, ofs;
snd_pcm_flush_playback( pcm_handle );
if (!name) {
fd = 0;
name = "stdin";
} else {
if ((fd = open (name, O_RDONLY, 0)) == -1) {
perror (name);
exit(1);
}
}
/* read the file header */
if ( read( fd, audiobuf, sizeof(AuHeader) ) != sizeof( AuHeader ) ) {
fprintf( stderr, "%s: read error", command );
exit( 1 );
}
if ( test_au( fd, audiobuf ) >= 0 ) {
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( 1 );
}
if ( (ofs = test_vocfile (audiobuf) ) >= 0) {
voc_play (fd, ofs, name);
goto __end;
}
/* read bytes for WAVE-header */
if ( read (fd, audiobuf + sizeof(VocHeader),
sizeof(WaveHeader) - sizeof(VocHeader) ) !=
sizeof(WaveHeader) - sizeof(VocHeader) ) {
fprintf( stderr, "%s: read error", command );
exit( 1 );
}
if (test_wavefile (audiobuf) >= 0) {
playback_go(fd, 0, count, FORMAT_WAVE, name);
} else {
/* should be raw data */
init_raw_data();
count = calc_count();
playback_go(fd, sizeof(WaveHeader), count, FORMAT_RAW, name);
}
__end:
if (fd != 0)
close(fd);
}
static void record(char *name)
{
int fd;
snd_pcm_flush_record( pcm_handle );
if (!name) {
fd = 1;
name = "stdout";
} else {
remove( name );
if ((fd = open (name, O_WRONLY | O_CREAT, 0644)) == -1) {
perror (name);
exit(1);
}
}
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);
record_go( fd, 0, count, active_format, name);
fmt_rec_table[active_format].end(fd);
}
Reference in a new issue Copy permalink