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This commit is contained in:
Jaroslav Kysela 1998-09-21 21:07:47 +00:00
parent 138dbc54d8
commit afb68b114a
1 changed files with 62 additions and 2 deletions
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64
test/pcm.c
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@ -2,6 +2,8 @@
#include <string.h> #include <string.h>
#include "../include/asoundlib.h" #include "../include/asoundlib.h"
#define BUFFER_SIZE 800000
static char *xitoa( int aaa ) static char *xitoa( int aaa )
{ {
static char str[12]; static char str[12];
@ -10,10 +12,26 @@ static char *xitoa( int aaa )
return str; return str;
} }
void setformat( void *phandle, void *rhandle )
{
int err;
snd_pcm_format_t format;
format.format = SND_PCM_SFMT_S16_LE;
format.channels = 2;
format.rate = 22050;
if ( (err = snd_pcm_playback_format( phandle, &format )) < 0 ) {
printf( "Playback format error: %s\n", snd_strerror( err ) );
}
if ( (err = snd_pcm_record_format( rhandle, &format )) < 0 ) {
printf( "Record format error: %s\n", snd_strerror( err ) );
}
}
void method1( void ) void method1( void )
{ {
void *phandle, *rhandle; void *phandle, *rhandle;
char buffer[80000]; char buffer[BUFFER_SIZE];
int err; int err;
if ( (err = snd_pcm_open( &phandle, 0, 0, SND_PCM_OPEN_PLAYBACK )) < 0 ) { if ( (err = snd_pcm_open( &phandle, 0, 0, SND_PCM_OPEN_PLAYBACK )) < 0 ) {
@ -24,6 +42,7 @@ void method1( void )
printf( "Record open error: %s\n", snd_strerror( err ) ); printf( "Record open error: %s\n", snd_strerror( err ) );
return; return;
} }
setformat( phandle, rhandle );
printf( "Recording... " ); fflush( stdout ); printf( "Recording... " ); fflush( stdout );
if ( (err = snd_pcm_read( rhandle, buffer, sizeof( buffer ) )) != sizeof( buffer ) ) { if ( (err = snd_pcm_read( rhandle, buffer, sizeof( buffer ) )) != sizeof( buffer ) ) {
printf( "Read error: %s\n", err < 0 ? snd_strerror( err ) : xitoa( err ) ); printf( "Read error: %s\n", err < 0 ? snd_strerror( err ) : xitoa( err ) );
@ -45,7 +64,7 @@ void method1( void )
void method2( void ) void method2( void )
{ {
void *phandle, *rhandle; void *phandle, *rhandle;
char buffer[80000]; char buffer[BUFFER_SIZE];
int err; int err;
if ( (err = snd_pcm_open( &phandle, 0, 0, SND_PCM_OPEN_PLAYBACK )) < 0 ) { if ( (err = snd_pcm_open( &phandle, 0, 0, SND_PCM_OPEN_PLAYBACK )) < 0 ) {
@ -56,6 +75,7 @@ void method2( void )
printf( "Record open error: %s\n", snd_strerror( err ) ); printf( "Record open error: %s\n", snd_strerror( err ) );
return; return;
} }
setformat( phandle, rhandle );
printf( "Recording... " ); fflush( stdout ); printf( "Recording... " ); fflush( stdout );
if ( (err = snd_pcm_read( rhandle, buffer, sizeof( buffer ) )) != sizeof( buffer ) ) { if ( (err = snd_pcm_read( rhandle, buffer, sizeof( buffer ) )) != sizeof( buffer ) ) {
printf( "Read error: %s\n", err < 0 ? snd_strerror( err ) : xitoa( err ) ); printf( "Read error: %s\n", err < 0 ? snd_strerror( err ) : xitoa( err ) );
@ -84,10 +104,50 @@ void method2( void )
printf( "Record close...\n" ); printf( "Record close...\n" );
} }
void method3( void )
{
void *handle;
char buffer[BUFFER_SIZE];
int err;
if ( (err = snd_pcm_open( &handle, 0, 0, SND_PCM_OPEN_DUPLEX )) < 0 ) {
printf( "Duplex open error: %s\n", snd_strerror( err ) );
return;
}
setformat( handle, handle );
printf( "Recording... " ); fflush( stdout );
if ( (err = snd_pcm_read( handle, buffer, sizeof( buffer ) )) != sizeof( buffer ) ) {
printf( "Read error: %s\n", err < 0 ? snd_strerror( err ) : xitoa( err ) );
return;
}
printf( "done...\n" );
if ( (err = snd_pcm_flush_record( handle )) < 0 ) {
printf( "Record flush error: %s\n", snd_strerror( err ) );
return;
}
printf( "Record flush done...\n" );
printf( "Playback... " ); fflush( stdout );
if ( (err = snd_pcm_write( handle, buffer, sizeof( buffer ) )) != sizeof( buffer ) ) {
printf( "Write error: %s\n", err < 0 ? snd_strerror( err ) : xitoa( err ) );
return;
}
printf( "done...\n" );
if ( (err = snd_pcm_flush_playback( handle )) < 0 ) {
printf( "Playback flush error: %s\n", snd_strerror( err ) );
return;
}
printf( "Playback flush done...\n" );
snd_pcm_close( handle );
printf( "Close...\n" );
}
void main( void ) void main( void )
{ {
printf( ">>>>> METHOD 1\n" ); printf( ">>>>> METHOD 1\n" );
method1(); method1();
printf( ">>>>> METHOD 2\n" ); printf( ">>>>> METHOD 2\n" );
method2(); method2();
printf( ">>>>> METHOD 3\n" );
method3();
} }