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Coding style...

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This commit is contained in:
Jaroslav Kysela 1998-11-27 14:57:39 +00:00
parent 2605e4d7dd
commit a741225e6e
6 changed files with 1345 additions and 1223 deletions
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108
src/control/control.c
View file

@ -43,9 +43,11 @@ int snd_ctl_open( void **handle, int card )
snd_ctl_t *ctl; snd_ctl_t *ctl;
*handle = NULL; *handle = NULL;
if ( card < 0 || card >= SND_CARDS ) return -EINVAL; if (card < 0 || card >= SND_CARDS)
return -EINVAL;
sprintf(filename, SND_FILE_CONTROL, card); sprintf(filename, SND_FILE_CONTROL, card);
if ( (fd = open( filename, O_RDWR )) < 0 ) return -errno; if ((fd = open(filename, O_RDWR)) < 0)
return -errno;
if (ioctl(fd, SND_CTL_IOCTL_PVERSION, &ver) < 0) { if (ioctl(fd, SND_CTL_IOCTL_PVERSION, &ver) < 0) {
close(fd); close(fd);
return -errno; return -errno;
@ -71,7 +73,8 @@ int snd_ctl_close( void *handle )
int res; int res;
ctl = (snd_ctl_t *) handle; ctl = (snd_ctl_t *) handle;
if ( !ctl ) return -EINVAL; if (!ctl)
return -EINVAL;
res = close(ctl->fd) < 0 ? -errno : 0; res = close(ctl->fd) < 0 ? -errno : 0;
free(ctl); free(ctl);
return res; return res;
@ -82,7 +85,8 @@ int snd_ctl_file_descriptor( void *handle )
snd_ctl_t *ctl; snd_ctl_t *ctl;
ctl = (snd_ctl_t *) handle; ctl = (snd_ctl_t *) handle;
if ( !ctl ) return -EINVAL; if (!ctl)
return -EINVAL;
return ctl->fd; return ctl->fd;
} }
@ -91,7 +95,8 @@ int snd_ctl_hw_info( void *handle, struct snd_ctl_hw_info *info )
snd_ctl_t *ctl; snd_ctl_t *ctl;
ctl = (snd_ctl_t *) handle; ctl = (snd_ctl_t *) handle;
if ( !ctl ) return -EINVAL; if (!ctl)
return -EINVAL;
if (ioctl(ctl->fd, SND_CTL_IOCTL_HW_INFO, info) < 0) if (ioctl(ctl->fd, SND_CTL_IOCTL_HW_INFO, info) < 0)
return -errno; return -errno;
return 0; return 0;
@ -103,7 +108,8 @@ int snd_ctl_switches( void *handle )
int result; int result;
ctl = (snd_ctl_t *) handle; ctl = (snd_ctl_t *) handle;
if ( !ctl ) return -EINVAL; if (!ctl)
return -EINVAL;
if (ioctl(ctl->fd, SND_CTL_IOCTL_SWITCHES, &result) < 0) if (ioctl(ctl->fd, SND_CTL_IOCTL_SWITCHES, &result) < 0)
return -errno; return -errno;
return result; return result;
@ -116,7 +122,8 @@ int snd_ctl_switch( void *handle, const char *switch_id )
int idx, switches, err; int idx, switches, err;
ctl = (snd_ctl_t *) handle; ctl = (snd_ctl_t *) handle;
if ( !ctl ) return -EINVAL; if (!ctl)
return -EINVAL;
/* bellow implementation isn't optimized for speed */ /* bellow implementation isn't optimized for speed */
/* info about switches should be cached in the snd_ctl_t structure */ /* info about switches should be cached in the snd_ctl_t structure */
if ((switches = snd_ctl_switches(handle)) < 0) if ((switches = snd_ctl_switches(handle)) < 0)
@ -135,7 +142,8 @@ int snd_ctl_switch_read( void *handle, int switchn, struct snd_ctl_switch *data
snd_ctl_t *ctl; snd_ctl_t *ctl;
ctl = (snd_ctl_t *) handle; ctl = (snd_ctl_t *) handle;
if ( !ctl ) return -EINVAL; if (!ctl)
return -EINVAL;
data->switchn = switchn; data->switchn = switchn;
if (ioctl(ctl->fd, SND_CTL_IOCTL_SWITCH_READ, data) < 0) if (ioctl(ctl->fd, SND_CTL_IOCTL_SWITCH_READ, data) < 0)
return -errno; return -errno;
@ -147,7 +155,8 @@ int snd_ctl_switch_write( void *handle, int switchn, struct snd_ctl_switch *data
snd_ctl_t *ctl; snd_ctl_t *ctl;
ctl = (snd_ctl_t *) handle; ctl = (snd_ctl_t *) handle;
if ( !ctl ) return -EINVAL; if (!ctl)
return -EINVAL;
data->switchn = switchn; data->switchn = switchn;
if (ioctl(ctl->fd, SND_CTL_IOCTL_SWITCH_WRITE, data) < 0) if (ioctl(ctl->fd, SND_CTL_IOCTL_SWITCH_WRITE, data) < 0)
return -errno; return -errno;
@ -159,7 +168,8 @@ int snd_ctl_pcm_info( void *handle, int dev, snd_pcm_info_t *info )
snd_ctl_t *ctl; snd_ctl_t *ctl;
ctl = (snd_ctl_t *) handle; ctl = (snd_ctl_t *) handle;
if ( !ctl ) return -EINVAL; if (!ctl)
return -EINVAL;
if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_DEVICE, &dev) < 0) if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_DEVICE, &dev) < 0)
return -errno; return -errno;
if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_INFO, info) < 0) if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_INFO, info) < 0)
@ -172,7 +182,8 @@ int snd_ctl_pcm_playback_info( void *handle, int dev, snd_pcm_playback_info_t *i
snd_ctl_t *ctl; snd_ctl_t *ctl;
ctl = (snd_ctl_t *) handle; ctl = (snd_ctl_t *) handle;
if ( !ctl ) return -EINVAL; if (!ctl)
return -EINVAL;
if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_DEVICE, &dev) < 0) if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_DEVICE, &dev) < 0)
return -errno; return -errno;
if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_PLAYBACK_INFO, info) < 0) if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_PLAYBACK_INFO, info) < 0)
@ -185,7 +196,8 @@ int snd_ctl_pcm_record_info( void *handle, int dev, snd_pcm_record_info_t *info
snd_ctl_t *ctl; snd_ctl_t *ctl;
ctl = (snd_ctl_t *) handle; ctl = (snd_ctl_t *) handle;
if ( !ctl ) return -EINVAL; if (!ctl)
return -EINVAL;
if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_DEVICE, &dev) < 0) if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_DEVICE, &dev) < 0)
return -errno; return -errno;
if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_RECORD_INFO, info) < 0) if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_RECORD_INFO, info) < 0)
@ -199,7 +211,8 @@ int snd_ctl_pcm_playback_switches( void *handle, int dev )
int result; int result;
ctl = (snd_ctl_t *) handle; ctl = (snd_ctl_t *) handle;
if ( !ctl ) return -EINVAL; if (!ctl)
return -EINVAL;
if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_DEVICE, &dev) < 0) if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_DEVICE, &dev) < 0)
return -errno; return -errno;
if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_PSWITCHES, &result) < 0) if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_PSWITCHES, &result) < 0)
@ -214,7 +227,8 @@ int snd_ctl_pcm_playback_switch( void *handle, int dev, const char *switch_id )
int idx, switches, err; int idx, switches, err;
ctl = (snd_ctl_t *) handle; ctl = (snd_ctl_t *) handle;
if ( !ctl ) return -EINVAL; if (!ctl)
return -EINVAL;
/* bellow implementation isn't optimized for speed */ /* bellow implementation isn't optimized for speed */
/* info about switches should be cached in the snd_ctl_t structure */ /* info about switches should be cached in the snd_ctl_t structure */
if ((switches = snd_ctl_pcm_playback_switches(handle, dev)) < 0) if ((switches = snd_ctl_pcm_playback_switches(handle, dev)) < 0)
@ -233,7 +247,8 @@ int snd_ctl_pcm_playback_switch_read( void *handle, int dev, int switchn, snd_pc
snd_ctl_t *ctl; snd_ctl_t *ctl;
ctl = (snd_ctl_t *) handle; ctl = (snd_ctl_t *) handle;
if ( !ctl ) return -EINVAL; if (!ctl)
return -EINVAL;
data->switchn = switchn; data->switchn = switchn;
if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_DEVICE, &dev) < 0) if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_DEVICE, &dev) < 0)
return -errno; return -errno;
@ -247,7 +262,8 @@ int snd_ctl_pcm_playback_switch_write( void *handle, int dev, int switchn, snd_p
snd_ctl_t *ctl; snd_ctl_t *ctl;
ctl = (snd_ctl_t *) handle; ctl = (snd_ctl_t *) handle;
if ( !ctl ) return -EINVAL; if (!ctl)
return -EINVAL;
data->switchn = switchn; data->switchn = switchn;
if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_DEVICE, &dev) < 0) if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_DEVICE, &dev) < 0)
return -errno; return -errno;
@ -262,7 +278,8 @@ int snd_ctl_pcm_record_switches( void *handle, int dev )
int result; int result;
ctl = (snd_ctl_t *) handle; ctl = (snd_ctl_t *) handle;
if ( !ctl ) return -EINVAL; if (!ctl)
return -EINVAL;
if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_DEVICE, &dev) < 0) if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_DEVICE, &dev) < 0)
return -errno; return -errno;
if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_RSWITCHES, &result) < 0) if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_RSWITCHES, &result) < 0)
@ -277,7 +294,8 @@ int snd_ctl_pcm_record_switch( void *handle, int dev, const char *switch_id )
int idx, switches, err; int idx, switches, err;
ctl = (snd_ctl_t *) handle; ctl = (snd_ctl_t *) handle;
if ( !ctl ) return -EINVAL; if (!ctl)
return -EINVAL;
/* bellow implementation isn't optimized for speed */ /* bellow implementation isn't optimized for speed */
/* info about switches should be cached in the snd_ctl_t structure */ /* info about switches should be cached in the snd_ctl_t structure */
if ((switches = snd_ctl_pcm_record_switches(handle, dev)) < 0) if ((switches = snd_ctl_pcm_record_switches(handle, dev)) < 0)
@ -296,7 +314,8 @@ int snd_ctl_pcm_record_switch_read( void *handle, int dev, int switchn, snd_pcm_
snd_ctl_t *ctl; snd_ctl_t *ctl;
ctl = (snd_ctl_t *) handle; ctl = (snd_ctl_t *) handle;
if ( !ctl ) return -EINVAL; if (!ctl)
return -EINVAL;
data->switchn = switchn; data->switchn = switchn;
if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_DEVICE, &dev) < 0) if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_DEVICE, &dev) < 0)
return -errno; return -errno;
@ -310,7 +329,8 @@ int snd_ctl_pcm_record_switch_write( void *handle, int dev, int switchn, snd_pcm
snd_ctl_t *ctl; snd_ctl_t *ctl;
ctl = (snd_ctl_t *) handle; ctl = (snd_ctl_t *) handle;
if ( !ctl ) return -EINVAL; if (!ctl)
return -EINVAL;
data->switchn = switchn; data->switchn = switchn;
if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_DEVICE, &dev) < 0) if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_DEVICE, &dev) < 0)
return -errno; return -errno;
@ -324,7 +344,8 @@ int snd_ctl_mixer_info( void *handle, int dev, snd_mixer_info_t *info )
snd_ctl_t *ctl; snd_ctl_t *ctl;
ctl = (snd_ctl_t *) handle; ctl = (snd_ctl_t *) handle;
if ( !ctl ) return -EINVAL; if (!ctl)
return -EINVAL;
if (ioctl(ctl->fd, SND_CTL_IOCTL_MIXER_DEVICE, &dev) < 0) if (ioctl(ctl->fd, SND_CTL_IOCTL_MIXER_DEVICE, &dev) < 0)
return -errno; return -errno;
if (ioctl(ctl->fd, SND_CTL_IOCTL_MIXER_INFO, info) < 0) if (ioctl(ctl->fd, SND_CTL_IOCTL_MIXER_INFO, info) < 0)
@ -338,7 +359,8 @@ int snd_ctl_mixer_switches( void *handle, int dev )
int result; int result;
ctl = (snd_ctl_t *) handle; ctl = (snd_ctl_t *) handle;
if ( !ctl ) return -EINVAL; if (!ctl)
return -EINVAL;
if (ioctl(ctl->fd, SND_CTL_IOCTL_MIXER_DEVICE, &dev) < 0) if (ioctl(ctl->fd, SND_CTL_IOCTL_MIXER_DEVICE, &dev) < 0)
return -errno; return -errno;
if (ioctl(ctl->fd, SND_CTL_IOCTL_MIXER_SWITCHES, &result) < 0) if (ioctl(ctl->fd, SND_CTL_IOCTL_MIXER_SWITCHES, &result) < 0)
@ -353,7 +375,8 @@ int snd_ctl_mixer_switch( void *handle, int dev, const char *switch_id )
int idx, switches, err; int idx, switches, err;
ctl = (snd_ctl_t *) handle; ctl = (snd_ctl_t *) handle;
if ( !ctl ) return -EINVAL; if (!ctl)
return -EINVAL;
/* bellow implementation isn't optimized for speed */ /* bellow implementation isn't optimized for speed */
/* info about switches should be cached in the snd_ctl_t structure */ /* info about switches should be cached in the snd_ctl_t structure */
if ((switches = snd_ctl_mixer_switches(handle, dev)) < 0) if ((switches = snd_ctl_mixer_switches(handle, dev)) < 0)
@ -372,7 +395,8 @@ int snd_ctl_mixer_switch_read( void *handle, int dev, int switchn, snd_mixer_swi
snd_ctl_t *ctl; snd_ctl_t *ctl;
ctl = (snd_ctl_t *) handle; ctl = (snd_ctl_t *) handle;
if ( !ctl ) return -EINVAL; if (!ctl)
return -EINVAL;
data->switchn = switchn; data->switchn = switchn;
if (ioctl(ctl->fd, SND_CTL_IOCTL_MIXER_DEVICE, &dev) < 0) if (ioctl(ctl->fd, SND_CTL_IOCTL_MIXER_DEVICE, &dev) < 0)
return -errno; return -errno;
@ -386,7 +410,8 @@ int snd_ctl_mixer_switch_write( void *handle, int dev, int switchn, snd_mixer_sw
snd_ctl_t *ctl; snd_ctl_t *ctl;
ctl = (snd_ctl_t *) handle; ctl = (snd_ctl_t *) handle;
if ( !ctl ) return -EINVAL; if (!ctl)
return -EINVAL;
data->switchn = switchn; data->switchn = switchn;
if (ioctl(ctl->fd, SND_CTL_IOCTL_MIXER_DEVICE, &dev) < 0) if (ioctl(ctl->fd, SND_CTL_IOCTL_MIXER_DEVICE, &dev) < 0)
return -errno; return -errno;
@ -400,7 +425,8 @@ int snd_ctl_rawmidi_info( void *handle, int dev, snd_rawmidi_info_t *info )
snd_ctl_t *ctl; snd_ctl_t *ctl;
ctl = (snd_ctl_t *) handle; ctl = (snd_ctl_t *) handle;
if ( !ctl ) return -EINVAL; if (!ctl)
return -EINVAL;
if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_DEVICE, &dev) < 0) if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_DEVICE, &dev) < 0)
return -errno; return -errno;
if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_INFO, info) < 0) if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_INFO, info) < 0)
@ -413,7 +439,8 @@ int snd_ctl_rawmidi_output_info( void *handle, int dev, snd_rawmidi_output_info_
snd_ctl_t *ctl; snd_ctl_t *ctl;
ctl = (snd_ctl_t *) handle; ctl = (snd_ctl_t *) handle;
if ( !ctl ) return -EINVAL; if (!ctl)
return -EINVAL;
if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_DEVICE, &dev) < 0) if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_DEVICE, &dev) < 0)
return -errno; return -errno;
if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_OUTPUT_INFO, info) < 0) if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_OUTPUT_INFO, info) < 0)
@ -426,7 +453,8 @@ int snd_ctl_rawmidi_input_info( void *handle, int dev, snd_rawmidi_input_info_t
snd_ctl_t *ctl; snd_ctl_t *ctl;
ctl = (snd_ctl_t *) handle; ctl = (snd_ctl_t *) handle;
if ( !ctl ) return -EINVAL; if (!ctl)
return -EINVAL;
if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_DEVICE, &dev) < 0) if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_DEVICE, &dev) < 0)
return -errno; return -errno;
if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_INPUT_INFO, info) < 0) if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_INPUT_INFO, info) < 0)
@ -440,7 +468,8 @@ int snd_ctl_rawmidi_output_switches( void *handle, int dev )
int result; int result;
ctl = (snd_ctl_t *) handle; ctl = (snd_ctl_t *) handle;
if ( !ctl ) return -EINVAL; if (!ctl)
return -EINVAL;
if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_DEVICE, &dev) < 0) if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_DEVICE, &dev) < 0)
return -errno; return -errno;
if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_OSWITCHES, &result) < 0) if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_OSWITCHES, &result) < 0)
@ -455,7 +484,8 @@ int snd_ctl_rawmidi_output_switch( void *handle, int dev, const char *switch_id
int idx, switches, err; int idx, switches, err;
ctl = (snd_ctl_t *) handle; ctl = (snd_ctl_t *) handle;
if ( !ctl ) return -EINVAL; if (!ctl)
return -EINVAL;
/* bellow implementation isn't optimized for speed */ /* bellow implementation isn't optimized for speed */
/* info about switches should be cached in the snd_ctl_t structure */ /* info about switches should be cached in the snd_ctl_t structure */
if ((switches = snd_ctl_rawmidi_output_switches(handle, dev)) < 0) if ((switches = snd_ctl_rawmidi_output_switches(handle, dev)) < 0)
@ -474,7 +504,8 @@ int snd_ctl_rawmidi_output_switch_read( void *handle, int dev, int switchn, snd_
snd_ctl_t *ctl; snd_ctl_t *ctl;
ctl = (snd_ctl_t *) handle; ctl = (snd_ctl_t *) handle;
if ( !ctl ) return -EINVAL; if (!ctl)
return -EINVAL;
data->switchn = switchn; data->switchn = switchn;
if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_DEVICE, &dev) < 0) if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_DEVICE, &dev) < 0)
return -errno; return -errno;
@ -488,7 +519,8 @@ int snd_ctl_rawmidi_output_switch_write( void *handle, int dev, int switchn, snd
snd_ctl_t *ctl; snd_ctl_t *ctl;
ctl = (snd_ctl_t *) handle; ctl = (snd_ctl_t *) handle;
if ( !ctl ) return -EINVAL; if (!ctl)
return -EINVAL;
data->switchn = switchn; data->switchn = switchn;
if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_DEVICE, &dev) < 0) if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_DEVICE, &dev) < 0)
return -errno; return -errno;
@ -503,7 +535,8 @@ int snd_ctl_rawmidi_input_switches( void *handle, int dev )
int result; int result;
ctl = (snd_ctl_t *) handle; ctl = (snd_ctl_t *) handle;
if ( !ctl ) return -EINVAL; if (!ctl)
return -EINVAL;
if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_DEVICE, &dev) < 0) if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_DEVICE, &dev) < 0)
return -errno; return -errno;
if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_ISWITCHES, &result) < 0) if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_ISWITCHES, &result) < 0)
@ -518,7 +551,8 @@ int snd_ctl_rawmidi_input_switch( void *handle, int dev, const char *switch_id )
int idx, switches, err; int idx, switches, err;
ctl = (snd_ctl_t *) handle; ctl = (snd_ctl_t *) handle;
if ( !ctl ) return -EINVAL; if (!ctl)
return -EINVAL;
/* bellow implementation isn't optimized for speed */ /* bellow implementation isn't optimized for speed */
/* info about switches should be cached in the snd_ctl_t structure */ /* info about switches should be cached in the snd_ctl_t structure */
if ((switches = snd_ctl_rawmidi_input_switches(handle, dev)) < 0) if ((switches = snd_ctl_rawmidi_input_switches(handle, dev)) < 0)
@ -537,7 +571,8 @@ int snd_ctl_rawmidi_input_switch_read( void *handle, int dev, int switchn, snd_r
snd_ctl_t *ctl; snd_ctl_t *ctl;
ctl = (snd_ctl_t *) handle; ctl = (snd_ctl_t *) handle;
if ( !ctl ) return -EINVAL; if (!ctl)
return -EINVAL;
data->switchn = switchn; data->switchn = switchn;
if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_DEVICE, &dev) < 0) if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_DEVICE, &dev) < 0)
return -errno; return -errno;
@ -551,7 +586,8 @@ int snd_ctl_rawmidi_input_switch_write( void *handle, int dev, int switchn, snd_
snd_ctl_t *ctl; snd_ctl_t *ctl;
ctl = (snd_ctl_t *) handle; ctl = (snd_ctl_t *) handle;
if ( !ctl ) return -EINVAL; if (!ctl)
return -EINVAL;
data->switchn = switchn; data->switchn = switchn;
if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_DEVICE, &dev) < 0) if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_DEVICE, &dev) < 0)
return -errno; return -errno;

6
src/error.c
View file

@ -26,13 +26,15 @@
#include <string.h> #include <string.h>
#include "asoundlib.h" #include "asoundlib.h"
static const char *snd_error_codes[] = { static const char *snd_error_codes[] =
{
"Sound protocol isn't compatible" "Sound protocol isn't compatible"
}; };
const char *snd_strerror(int errnum) const char *snd_strerror(int errnum)
{ {
if ( errnum < 0 ) errnum = -errnum; if (errnum < 0)
errnum = -errnum;
if (errnum < SND_ERROR_BEGIN) if (errnum < SND_ERROR_BEGIN)
return (const char *) strerror(errnum); return (const char *) strerror(errnum);
errnum -= SND_ERROR_BEGIN; errnum -= SND_ERROR_BEGIN;

54
src/mixer/mixer.c
View file

@ -44,9 +44,11 @@ int snd_mixer_open( void **handle, int card, int device )
snd_mixer_t *mixer; snd_mixer_t *mixer;
*handle = NULL; *handle = NULL;
if ( card < 0 || card >= SND_CARDS ) return -EINVAL; if (card < 0 || card >= SND_CARDS)
return -EINVAL;
sprintf(filename, SND_FILE_MIXER, card, device); sprintf(filename, SND_FILE_MIXER, card, device);
if ( (fd = open( filename, O_RDWR )) < 0 ) return -errno; if ((fd = open(filename, O_RDWR)) < 0)
return -errno;
if (ioctl(fd, SND_MIXER_IOCTL_PVERSION, &ver) < 0) { if (ioctl(fd, SND_MIXER_IOCTL_PVERSION, &ver) < 0) {
close(fd); close(fd);
return -errno; return -errno;
@ -73,7 +75,8 @@ int snd_mixer_close( void *handle )
int res; int res;
mixer = (snd_mixer_t *) handle; mixer = (snd_mixer_t *) handle;
if ( !mixer ) return -EINVAL; if (!mixer)
return -EINVAL;
res = close(mixer->fd) < 0 ? -errno : 0; res = close(mixer->fd) < 0 ? -errno : 0;
free(mixer); free(mixer);
return res; return res;
@ -84,7 +87,8 @@ int snd_mixer_file_descriptor( void *handle )
snd_mixer_t *mixer; snd_mixer_t *mixer;
mixer = (snd_mixer_t *) handle; mixer = (snd_mixer_t *) handle;
if ( !mixer ) return -EINVAL; if (!mixer)
return -EINVAL;
return mixer->fd; return mixer->fd;
} }
@ -94,7 +98,8 @@ int snd_mixer_channels( void *handle )
int result; int result;
mixer = (snd_mixer_t *) handle; mixer = (snd_mixer_t *) handle;
if ( !mixer ) return -EINVAL; if (!mixer)
return -EINVAL;
if (ioctl(mixer->fd, SND_MIXER_IOCTL_CHANNELS, &result) < 0) if (ioctl(mixer->fd, SND_MIXER_IOCTL_CHANNELS, &result) < 0)
return -errno; return -errno;
return result; return result;
@ -105,7 +110,8 @@ int snd_mixer_info( void *handle, snd_mixer_info_t *info )
snd_mixer_t *mixer; snd_mixer_t *mixer;
mixer = (snd_mixer_t *) handle; mixer = (snd_mixer_t *) handle;
if ( !mixer ) return -EINVAL; if (!mixer)
return -EINVAL;
if (ioctl(mixer->fd, SND_MIXER_IOCTL_INFO, info) < 0) if (ioctl(mixer->fd, SND_MIXER_IOCTL_INFO, info) < 0)
return -errno; return -errno;
return 0; return 0;
@ -116,7 +122,8 @@ int snd_mixer_exact_mode( void *handle, int enable )
snd_mixer_t *mixer; snd_mixer_t *mixer;
mixer = (snd_mixer_t *) handle; mixer = (snd_mixer_t *) handle;
if ( !mixer ) return -EINVAL; if (!mixer)
return -EINVAL;
if (ioctl(mixer->fd, SND_MIXER_IOCTL_EXACT, &enable) < 0) if (ioctl(mixer->fd, SND_MIXER_IOCTL_EXACT, &enable) < 0)
return -errno; return -errno;
return 0; return 0;
@ -129,7 +136,8 @@ int snd_mixer_channel( void *handle, const char *channel_id )
int idx, channels, err; int idx, channels, err;
mixer = (snd_mixer_t *) handle; mixer = (snd_mixer_t *) handle;
if ( !mixer ) return -EINVAL; if (!mixer)
return -EINVAL;
/* bellow implementation isn't optimized for speed */ /* bellow implementation isn't optimized for speed */
/* info about channels should be cached in the snd_mixer_t structure */ /* info about channels should be cached in the snd_mixer_t structure */
if ((channels = snd_mixer_channels(handle)) < 0) if ((channels = snd_mixer_channels(handle)) < 0)
@ -148,7 +156,8 @@ int snd_mixer_channel_info( void *handle, int channel, snd_mixer_channel_info_t
snd_mixer_t *mixer; snd_mixer_t *mixer;
mixer = (snd_mixer_t *) handle; mixer = (snd_mixer_t *) handle;
if ( !mixer ) return -EINVAL; if (!mixer)
return -EINVAL;
info->channel = channel; info->channel = channel;
if (ioctl(mixer->fd, SND_MIXER_IOCTL_CHANNEL_INFO, info) < 0) if (ioctl(mixer->fd, SND_MIXER_IOCTL_CHANNEL_INFO, info) < 0)
return -errno; return -errno;
@ -160,7 +169,8 @@ int snd_mixer_channel_read( void *handle, int channel, snd_mixer_channel_t *data
snd_mixer_t *mixer; snd_mixer_t *mixer;
mixer = (snd_mixer_t *) handle; mixer = (snd_mixer_t *) handle;
if ( !mixer ) return -EINVAL; if (!mixer)
return -EINVAL;
data->channel = channel; data->channel = channel;
if (ioctl(mixer->fd, SND_MIXER_IOCTL_CHANNEL_READ, data) < 0) if (ioctl(mixer->fd, SND_MIXER_IOCTL_CHANNEL_READ, data) < 0)
return -errno; return -errno;
@ -172,7 +182,8 @@ int snd_mixer_channel_write( void *handle, int channel, snd_mixer_channel_t *dat
snd_mixer_t *mixer; snd_mixer_t *mixer;
mixer = (snd_mixer_t *) handle; mixer = (snd_mixer_t *) handle;
if ( !mixer ) return -EINVAL; if (!mixer)
return -EINVAL;
data->channel = channel; data->channel = channel;
if (ioctl(mixer->fd, SND_MIXER_IOCTL_CHANNEL_WRITE, data) < 0) if (ioctl(mixer->fd, SND_MIXER_IOCTL_CHANNEL_WRITE, data) < 0)
return -errno; return -errno;
@ -185,7 +196,8 @@ int snd_mixer_switches( void *handle )
int result; int result;
mixer = (snd_mixer_t *) handle; mixer = (snd_mixer_t *) handle;
if ( !mixer ) return -EINVAL; if (!mixer)
return -EINVAL;
if (ioctl(mixer->fd, SND_MIXER_IOCTL_SWITCHES, &result) < 0) if (ioctl(mixer->fd, SND_MIXER_IOCTL_SWITCHES, &result) < 0)
return -errno; return -errno;
return result; return result;
@ -198,7 +210,8 @@ int snd_mixer_switch( void *handle, const char *switch_id )
int idx, switches, err; int idx, switches, err;
mixer = (snd_mixer_t *) handle; mixer = (snd_mixer_t *) handle;
if ( !mixer ) return -EINVAL; if (!mixer)
return -EINVAL;
/* bellow implementation isn't optimized for speed */ /* bellow implementation isn't optimized for speed */
/* info about switches should be cached in the snd_mixer_t structure */ /* info about switches should be cached in the snd_mixer_t structure */
if ((switches = snd_mixer_switches(handle)) < 0) if ((switches = snd_mixer_switches(handle)) < 0)
@ -217,7 +230,8 @@ int snd_mixer_switch_read( void *handle, int switchn, snd_mixer_switch_t *data )
snd_mixer_t *mixer; snd_mixer_t *mixer;
mixer = (snd_mixer_t *) handle; mixer = (snd_mixer_t *) handle;
if ( !mixer ) return -EINVAL; if (!mixer)
return -EINVAL;
data->switchn = switchn; data->switchn = switchn;
if (ioctl(mixer->fd, SND_MIXER_IOCTL_SWITCH_READ, data) < 0) if (ioctl(mixer->fd, SND_MIXER_IOCTL_SWITCH_READ, data) < 0)
return -errno; return -errno;
@ -229,7 +243,8 @@ int snd_mixer_switch_write( void *handle, int switchn, snd_mixer_switch_t *data
snd_mixer_t *mixer; snd_mixer_t *mixer;
mixer = (snd_mixer_t *) handle; mixer = (snd_mixer_t *) handle;
if ( !mixer ) return -EINVAL; if (!mixer)
return -EINVAL;
data->switchn = switchn; data->switchn = switchn;
if (ioctl(mixer->fd, SND_MIXER_IOCTL_SWITCH_WRITE, data) < 0) if (ioctl(mixer->fd, SND_MIXER_IOCTL_SWITCH_WRITE, data) < 0)
return -errno; return -errno;
@ -244,11 +259,14 @@ int snd_mixer_read( void *handle, snd_mixer_callbacks_t *callbacks )
unsigned char buffer[64]; unsigned char buffer[64];
mixer = (snd_mixer_t *) handle; mixer = (snd_mixer_t *) handle;
if ( !mixer ) return -EINVAL; if (!mixer)
return -EINVAL;
count = 0; count = 0;
while ((result = read(mixer->fd, &buffer, sizeof(buffer))) > 0) { while ((result = read(mixer->fd, &buffer, sizeof(buffer))) > 0) {
if ( result & 7 ) return -EIO; if (result & 7)
if ( !callbacks ) continue; return -EIO;
if (!callbacks)
continue;
for (idx = 0; idx < result; idx += 8) { for (idx = 0; idx < result; idx += 8) {
cmd = *(unsigned int *) &buffer[idx]; cmd = *(unsigned int *) &buffer[idx];
tmp = *(unsigned int *) &buffer[idx + 4]; tmp = *(unsigned int *) &buffer[idx + 4];

96
src/pcm/pcm.c
View file

@ -44,9 +44,11 @@ int snd_pcm_open( void **handle, int card, int device, int mode )
snd_pcm_t *pcm; snd_pcm_t *pcm;
*handle = NULL; *handle = NULL;
if ( card < 0 || card >= SND_CARDS ) return -EINVAL; if (card < 0 || card >= SND_CARDS)
return -EINVAL;
sprintf(filename, SND_FILE_PCM, card, device); sprintf(filename, SND_FILE_PCM, card, device);
if ( (fd = open( filename, mode )) < 0 ) return -errno; if ((fd = open(filename, mode)) < 0)
return -errno;
if (ioctl(fd, SND_PCM_IOCTL_PVERSION, &ver) < 0) { if (ioctl(fd, SND_PCM_IOCTL_PVERSION, &ver) < 0) {
close(fd); close(fd);
return -errno; return -errno;
@ -73,7 +75,8 @@ int snd_pcm_close( void *handle )
int res; int res;
pcm = (snd_pcm_t *) handle; pcm = (snd_pcm_t *) handle;
if ( !pcm ) return -EINVAL; if (!pcm)
return -EINVAL;
res = close(pcm->fd) < 0 ? -errno : 0; res = close(pcm->fd) < 0 ? -errno : 0;
free(pcm); free(pcm);
return res; return res;
@ -84,7 +87,8 @@ int snd_pcm_file_descriptor( void *handle )
snd_pcm_t *pcm; snd_pcm_t *pcm;
pcm = (snd_pcm_t *) handle; pcm = (snd_pcm_t *) handle;
if ( !pcm ) return -EINVAL; if (!pcm)
return -EINVAL;
return pcm->fd; return pcm->fd;
} }
@ -94,7 +98,8 @@ int snd_pcm_block_mode( void *handle, int enable )
long flags; long flags;
pcm = (snd_pcm_t *) handle; pcm = (snd_pcm_t *) handle;
if ( !pcm ) return -EINVAL; if (!pcm)
return -EINVAL;
if (fcntl(pcm->fd, F_GETFL, &flags) < 0) if (fcntl(pcm->fd, F_GETFL, &flags) < 0)
return -errno; return -errno;
if (enable) if (enable)
@ -111,7 +116,8 @@ int snd_pcm_info( void *handle, snd_pcm_info_t *info )
snd_pcm_t *pcm; snd_pcm_t *pcm;
pcm = (snd_pcm_t *) handle; pcm = (snd_pcm_t *) handle;
if ( !pcm ) return -EINVAL; if (!pcm)
return -EINVAL;
if (ioctl(pcm->fd, SND_PCM_IOCTL_INFO, info) < 0) if (ioctl(pcm->fd, SND_PCM_IOCTL_INFO, info) < 0)
return -errno; return -errno;
return 0; return 0;
@ -122,7 +128,8 @@ int snd_pcm_playback_info( void *handle, snd_pcm_playback_info_t *info )
snd_pcm_t *pcm; snd_pcm_t *pcm;
pcm = (snd_pcm_t *) handle; pcm = (snd_pcm_t *) handle;
if ( !pcm ) return -EINVAL; if (!pcm)
return -EINVAL;
if (ioctl(pcm->fd, SND_PCM_IOCTL_PLAYBACK_INFO, info) < 0) if (ioctl(pcm->fd, SND_PCM_IOCTL_PLAYBACK_INFO, info) < 0)
return -errno; return -errno;
return 0; return 0;
@ -133,7 +140,8 @@ int snd_pcm_record_info( void *handle, snd_pcm_record_info_t *info )
snd_pcm_t *pcm; snd_pcm_t *pcm;
pcm = (snd_pcm_t *) handle; pcm = (snd_pcm_t *) handle;
if ( !pcm ) return -EINVAL; if (!pcm)
return -EINVAL;
if (ioctl(pcm->fd, SND_PCM_IOCTL_RECORD_INFO, info) < 0) if (ioctl(pcm->fd, SND_PCM_IOCTL_RECORD_INFO, info) < 0)
return -errno; return -errno;
return 0; return 0;
@ -145,7 +153,8 @@ int snd_pcm_playback_switches( void *handle )
int result; int result;
pcm = (snd_pcm_t *) handle; pcm = (snd_pcm_t *) handle;
if ( !pcm ) return -EINVAL; if (!pcm)
return -EINVAL;
if (ioctl(pcm->fd, SND_PCM_IOCTL_PSWITCHES, &result) < 0) if (ioctl(pcm->fd, SND_PCM_IOCTL_PSWITCHES, &result) < 0)
return -errno; return -errno;
return result; return result;
@ -158,7 +167,8 @@ int snd_pcm_playback_switch( void *handle, const char *switch_id )
int idx, switches, err; int idx, switches, err;
pcm = (snd_pcm_t *) handle; pcm = (snd_pcm_t *) handle;
if ( !pcm ) return -EINVAL; if (!pcm)
return -EINVAL;
/* bellow implementation isn't optimized for speed */ /* bellow implementation isn't optimized for speed */
/* info about switches should be cached in the snd_mixer_t structure */ /* info about switches should be cached in the snd_mixer_t structure */
if ((switches = snd_pcm_playback_switches(handle)) < 0) if ((switches = snd_pcm_playback_switches(handle)) < 0)
@ -177,7 +187,8 @@ int snd_pcm_playback_switch_read( void *handle, int switchn, snd_pcm_switch_t *d
snd_pcm_t *pcm; snd_pcm_t *pcm;
pcm = (snd_pcm_t *) handle; pcm = (snd_pcm_t *) handle;
if ( !pcm ) return -EINVAL; if (!pcm)
return -EINVAL;
data->switchn = switchn; data->switchn = switchn;
if (ioctl(pcm->fd, SND_PCM_IOCTL_PSWITCH_READ, data) < 0) if (ioctl(pcm->fd, SND_PCM_IOCTL_PSWITCH_READ, data) < 0)
return -errno; return -errno;
@ -189,7 +200,8 @@ int snd_pcm_playback_switch_write( void *handle, int switchn, snd_pcm_switch_t *
snd_pcm_t *pcm; snd_pcm_t *pcm;
pcm = (snd_pcm_t *) handle; pcm = (snd_pcm_t *) handle;
if ( !pcm ) return -EINVAL; if (!pcm)
return -EINVAL;
data->switchn = switchn; data->switchn = switchn;
if (ioctl(pcm->fd, SND_PCM_IOCTL_PSWITCH_WRITE, data) < 0) if (ioctl(pcm->fd, SND_PCM_IOCTL_PSWITCH_WRITE, data) < 0)
return -errno; return -errno;
@ -202,7 +214,8 @@ int snd_pcm_record_switches( void *handle )
int result; int result;
pcm = (snd_pcm_t *) handle; pcm = (snd_pcm_t *) handle;
if ( !pcm ) return -EINVAL; if (!pcm)
return -EINVAL;
if (ioctl(pcm->fd, SND_PCM_IOCTL_RSWITCHES, &result) < 0) if (ioctl(pcm->fd, SND_PCM_IOCTL_RSWITCHES, &result) < 0)
return -errno; return -errno;
return result; return result;
@ -215,7 +228,8 @@ int snd_pcm_record_switch( void *handle, const char *switch_id )
int idx, switches, err; int idx, switches, err;
pcm = (snd_pcm_t *) handle; pcm = (snd_pcm_t *) handle;
if ( !pcm ) return -EINVAL; if (!pcm)
return -EINVAL;
/* bellow implementation isn't optimized for speed */ /* bellow implementation isn't optimized for speed */
/* info about switches should be cached in the snd_mixer_t structure */ /* info about switches should be cached in the snd_mixer_t structure */
if ((switches = snd_pcm_record_switches(handle)) < 0) if ((switches = snd_pcm_record_switches(handle)) < 0)
@ -234,7 +248,8 @@ int snd_pcm_record_switch_read( void *handle, int switchn, snd_pcm_switch_t *dat
snd_pcm_t *pcm; snd_pcm_t *pcm;
pcm = (snd_pcm_t *) handle; pcm = (snd_pcm_t *) handle;
if ( !pcm ) return -EINVAL; if (!pcm)
return -EINVAL;
data->switchn = switchn; data->switchn = switchn;
if (ioctl(pcm->fd, SND_PCM_IOCTL_RSWITCH_READ, data) < 0) if (ioctl(pcm->fd, SND_PCM_IOCTL_RSWITCH_READ, data) < 0)
return -errno; return -errno;
@ -246,7 +261,8 @@ int snd_pcm_record_switch_write( void *handle, int switchn, snd_pcm_switch_t *da
snd_pcm_t *pcm; snd_pcm_t *pcm;
pcm = (snd_pcm_t *) handle; pcm = (snd_pcm_t *) handle;
if ( !pcm ) return -EINVAL; if (!pcm)
return -EINVAL;
data->switchn = switchn; data->switchn = switchn;
if (ioctl(pcm->fd, SND_PCM_IOCTL_RSWITCH_WRITE, data) < 0) if (ioctl(pcm->fd, SND_PCM_IOCTL_RSWITCH_WRITE, data) < 0)
return -errno; return -errno;
@ -258,7 +274,8 @@ int snd_pcm_playback_format( void *handle, snd_pcm_format_t *format )
snd_pcm_t *pcm; snd_pcm_t *pcm;
pcm = (snd_pcm_t *) handle; pcm = (snd_pcm_t *) handle;
if ( !pcm ) return -EINVAL; if (!pcm)
return -EINVAL;
if (ioctl(pcm->fd, SND_PCM_IOCTL_PLAYBACK_FORMAT, format) < 0) if (ioctl(pcm->fd, SND_PCM_IOCTL_PLAYBACK_FORMAT, format) < 0)
return -errno; return -errno;
return 0; return 0;
@ -269,7 +286,8 @@ int snd_pcm_record_format( void *handle, snd_pcm_format_t *format )
snd_pcm_t *pcm; snd_pcm_t *pcm;
pcm = (snd_pcm_t *) handle; pcm = (snd_pcm_t *) handle;
if ( !pcm ) return -EINVAL; if (!pcm)
return -EINVAL;
if (ioctl(pcm->fd, SND_PCM_IOCTL_RECORD_FORMAT, format) < 0) if (ioctl(pcm->fd, SND_PCM_IOCTL_RECORD_FORMAT, format) < 0)
return -errno; return -errno;
return 0; return 0;
@ -280,7 +298,8 @@ int snd_pcm_playback_params( void *handle, snd_pcm_playback_params_t *params )
snd_pcm_t *pcm; snd_pcm_t *pcm;
pcm = (snd_pcm_t *) handle; pcm = (snd_pcm_t *) handle;
if ( !pcm ) return -EINVAL; if (!pcm)
return -EINVAL;
if (ioctl(pcm->fd, SND_PCM_IOCTL_PLAYBACK_PARAMS, params) < 0) if (ioctl(pcm->fd, SND_PCM_IOCTL_PLAYBACK_PARAMS, params) < 0)
return -errno; return -errno;
return 0; return 0;
@ -291,7 +310,8 @@ int snd_pcm_record_params( void *handle, snd_pcm_record_params_t *params )
snd_pcm_t *pcm; snd_pcm_t *pcm;
pcm = (snd_pcm_t *) handle; pcm = (snd_pcm_t *) handle;
if ( !pcm ) return -EINVAL; if (!pcm)
return -EINVAL;
if (ioctl(pcm->fd, SND_PCM_IOCTL_RECORD_PARAMS, params) < 0) if (ioctl(pcm->fd, SND_PCM_IOCTL_RECORD_PARAMS, params) < 0)
return -errno; return -errno;
return 0; return 0;
@ -302,7 +322,8 @@ int snd_pcm_playback_status( void *handle, snd_pcm_playback_status_t *status )
snd_pcm_t *pcm; snd_pcm_t *pcm;
pcm = (snd_pcm_t *) handle; pcm = (snd_pcm_t *) handle;
if ( !pcm ) return -EINVAL; if (!pcm)
return -EINVAL;
if (ioctl(pcm->fd, SND_PCM_IOCTL_PLAYBACK_STATUS, status) < 0) if (ioctl(pcm->fd, SND_PCM_IOCTL_PLAYBACK_STATUS, status) < 0)
return -errno; return -errno;
return 0; return 0;
@ -313,7 +334,8 @@ int snd_pcm_record_status( void *handle, snd_pcm_record_status_t *status )
snd_pcm_t *pcm; snd_pcm_t *pcm;
pcm = (snd_pcm_t *) handle; pcm = (snd_pcm_t *) handle;
if ( !pcm ) return -EINVAL; if (!pcm)
return -EINVAL;
if (ioctl(pcm->fd, SND_PCM_IOCTL_RECORD_STATUS, status) < 0) if (ioctl(pcm->fd, SND_PCM_IOCTL_RECORD_STATUS, status) < 0)
return -errno; return -errno;
return 0; return 0;
@ -324,7 +346,8 @@ int snd_pcm_drain_playback( void *handle )
snd_pcm_t *pcm; snd_pcm_t *pcm;
pcm = (snd_pcm_t *) handle; pcm = (snd_pcm_t *) handle;
if ( !pcm ) return -EINVAL; if (!pcm)
return -EINVAL;
if (ioctl(pcm->fd, SND_PCM_IOCTL_DRAIN_PLAYBACK) < 0) if (ioctl(pcm->fd, SND_PCM_IOCTL_DRAIN_PLAYBACK) < 0)
return -errno; return -errno;
return 0; return 0;
@ -335,7 +358,8 @@ int snd_pcm_flush_playback( void *handle )
snd_pcm_t *pcm; snd_pcm_t *pcm;
pcm = (snd_pcm_t *) handle; pcm = (snd_pcm_t *) handle;
if ( !pcm ) return -EINVAL; if (!pcm)
return -EINVAL;
if (ioctl(pcm->fd, SND_PCM_IOCTL_FLUSH_PLAYBACK) < 0) if (ioctl(pcm->fd, SND_PCM_IOCTL_FLUSH_PLAYBACK) < 0)
return -errno; return -errno;
return 0; return 0;
@ -346,7 +370,8 @@ int snd_pcm_flush_record( void *handle )
snd_pcm_t *pcm; snd_pcm_t *pcm;
pcm = (snd_pcm_t *) handle; pcm = (snd_pcm_t *) handle;
if ( !pcm ) return -EINVAL; if (!pcm)
return -EINVAL;
if (ioctl(pcm->fd, SND_PCM_IOCTL_FLUSH_RECORD) < 0) if (ioctl(pcm->fd, SND_PCM_IOCTL_FLUSH_RECORD) < 0)
return -errno; return -errno;
return 0; return 0;
@ -357,7 +382,8 @@ int snd_pcm_playback_pause( void *handle, int enable )
snd_pcm_t *pcm; snd_pcm_t *pcm;
pcm = (snd_pcm_t *) handle; pcm = (snd_pcm_t *) handle;
if ( !pcm ) return -EINVAL; if (!pcm)
return -EINVAL;
if (ioctl(pcm->fd, SND_PCM_IOCTL_PLAYBACK_PAUSE, &enable) < 0) if (ioctl(pcm->fd, SND_PCM_IOCTL_PLAYBACK_PAUSE, &enable) < 0)
return -errno; return -errno;
return 0; return 0;
@ -368,7 +394,8 @@ int snd_pcm_playback_time( void *handle, int enable )
snd_pcm_t *pcm; snd_pcm_t *pcm;
pcm = (snd_pcm_t *) handle; pcm = (snd_pcm_t *) handle;
if ( !pcm ) return -EINVAL; if (!pcm)
return -EINVAL;
if (ioctl(pcm->fd, SND_PCM_IOCTL_PLAYBACK_TIME, &enable) < 0) if (ioctl(pcm->fd, SND_PCM_IOCTL_PLAYBACK_TIME, &enable) < 0)
return -errno; return -errno;
return 0; return 0;
@ -379,7 +406,8 @@ int snd_pcm_record_time( void *handle, int enable )
snd_pcm_t *pcm; snd_pcm_t *pcm;
pcm = (snd_pcm_t *) handle; pcm = (snd_pcm_t *) handle;
if ( !pcm ) return -EINVAL; if (!pcm)
return -EINVAL;
if (ioctl(pcm->fd, SND_PCM_IOCTL_RECORD_TIME, &enable) < 0) if (ioctl(pcm->fd, SND_PCM_IOCTL_RECORD_TIME, &enable) < 0)
return -errno; return -errno;
return 0; return 0;
@ -391,9 +419,11 @@ ssize_t snd_pcm_write( void *handle, const void *buffer, size_t size )
ssize_t result; ssize_t result;
pcm = (snd_pcm_t *) handle; pcm = (snd_pcm_t *) handle;
if ( !pcm ) return -EINVAL; if (!pcm)
return -EINVAL;
result = write(pcm->fd, buffer, size); result = write(pcm->fd, buffer, size);
if ( result < 0 ) return -errno; if (result < 0)
return -errno;
return result; return result;
} }
@ -403,8 +433,10 @@ ssize_t snd_pcm_read( void *handle, void *buffer, size_t size )
ssize_t result; ssize_t result;
pcm = (snd_pcm_t *) handle; pcm = (snd_pcm_t *) handle;
if ( !pcm ) return -EINVAL; if (!pcm)
return -EINVAL;
result = read(pcm->fd, buffer, size); result = read(pcm->fd, buffer, size);
if ( result < 0 ) return -errno; if (result < 0)
return -errno;
return result; return result;
} }

27
src/pcm/pcm_loopback.c
View file

@ -44,10 +44,12 @@ int snd_pcm_loopback_open( void **handle, int card, int device, int mode )
snd_pcm_loopback_t *lb; snd_pcm_loopback_t *lb;
*handle = NULL; *handle = NULL;
if ( card < 0 || card >= SND_CARDS ) return -EINVAL; if (card < 0 || card >= SND_CARDS)
return -EINVAL;
sprintf(filename, SND_FILE_PCM_LB, card, device, sprintf(filename, SND_FILE_PCM_LB, card, device,
mode == SND_PCM_LB_OPEN_RECORD ? "r" : "p"); mode == SND_PCM_LB_OPEN_RECORD ? "r" : "p");
if ( (fd = open( filename, mode )) < 0 ) return -errno; if ((fd = open(filename, mode)) < 0)
return -errno;
if (ioctl(fd, SND_PCM_IOCTL_PVERSION, &ver) < 0) { if (ioctl(fd, SND_PCM_IOCTL_PVERSION, &ver) < 0) {
close(fd); close(fd);
return -errno; return -errno;
@ -74,7 +76,8 @@ int snd_pcm_loopback_close( void *handle )
int res; int res;
lb = (snd_pcm_loopback_t *) handle; lb = (snd_pcm_loopback_t *) handle;
if ( !lb ) return -EINVAL; if (!lb)
return -EINVAL;
res = close(lb->fd) < 0 ? -errno : 0; res = close(lb->fd) < 0 ? -errno : 0;
free(lb); free(lb);
return res; return res;
@ -85,7 +88,8 @@ int snd_pcm_loopback_file_descriptor( void *handle )
snd_pcm_loopback_t *lb; snd_pcm_loopback_t *lb;
lb = (snd_pcm_loopback_t *) handle; lb = (snd_pcm_loopback_t *) handle;
if ( !lb ) return -EINVAL; if (!lb)
return -EINVAL;
return lb->fd; return lb->fd;
} }
@ -95,7 +99,8 @@ int snd_pcm_loopback_block_mode( void *handle, int enable )
long flags; long flags;
lb = (snd_pcm_loopback_t *) handle; lb = (snd_pcm_loopback_t *) handle;
if ( !lb ) return -EINVAL; if (!lb)
return -EINVAL;
if (fcntl(lb->fd, F_GETFL, &flags) < 0) if (fcntl(lb->fd, F_GETFL, &flags) < 0)
return -errno; return -errno;
if (enable) if (enable)
@ -113,7 +118,8 @@ int snd_pcm_loopback_stream_mode( void *handle, int mode )
long lmode = mode; long lmode = mode;
lb = (snd_pcm_loopback_t *) handle; lb = (snd_pcm_loopback_t *) handle;
if ( !lb ) return -EINVAL; if (!lb)
return -EINVAL;
if (ioctl(lb->fd, SND_PCM_LB_IOCTL_STREAM_MODE, &lmode) < 0) if (ioctl(lb->fd, SND_PCM_LB_IOCTL_STREAM_MODE, &lmode) < 0)
return -errno; return -errno;
return 0; return 0;
@ -124,7 +130,8 @@ int snd_pcm_loopback_format( void *handle, snd_pcm_format_t *format )
snd_pcm_loopback_t *lb; snd_pcm_loopback_t *lb;
lb = (snd_pcm_loopback_t *) handle; lb = (snd_pcm_loopback_t *) handle;
if ( !lb ) return -EINVAL; if (!lb)
return -EINVAL;
if (ioctl(lb->fd, SND_PCM_LB_IOCTL_FORMAT, format) < 0) if (ioctl(lb->fd, SND_PCM_LB_IOCTL_FORMAT, format) < 0)
return -errno; return -errno;
return 0; return 0;
@ -136,8 +143,10 @@ ssize_t snd_pcm_loopback_read( void *handle, void *buffer, size_t size )
ssize_t result; ssize_t result;
lb = (snd_pcm_loopback_t *) handle; lb = (snd_pcm_loopback_t *) handle;
if ( !lb ) return -EINVAL; if (!lb)
return -EINVAL;
result = read(lb->fd, buffer, size); result = read(lb->fd, buffer, size);
if ( result < 0 ) return -errno; if (result < 0)
return -errno;
return result; return result;
} }

75
src/rawmidi/rawmidi.c
View file

@ -44,9 +44,11 @@ int snd_rawmidi_open( void **handle, int card, int device, int mode )
snd_rawmidi_t *rmidi; snd_rawmidi_t *rmidi;
*handle = NULL; *handle = NULL;
if ( card < 0 || card >= SND_CARDS ) return -EINVAL; if (card < 0 || card >= SND_CARDS)
return -EINVAL;
sprintf(filename, SND_FILE_RAWMIDI, card, device); sprintf(filename, SND_FILE_RAWMIDI, card, device);
if ( (fd = open( filename, mode )) < 0 ) return -errno; if ((fd = open(filename, mode)) < 0)
return -errno;
if (ioctl(fd, SND_RAWMIDI_IOCTL_PVERSION, &ver) < 0) { if (ioctl(fd, SND_RAWMIDI_IOCTL_PVERSION, &ver) < 0) {
close(fd); close(fd);
return -errno; return -errno;
@ -73,7 +75,8 @@ int snd_rawmidi_close( void *handle )
int res; int res;
rmidi = (snd_rawmidi_t *) handle; rmidi = (snd_rawmidi_t *) handle;
if ( !rmidi ) return -EINVAL; if (!rmidi)
return -EINVAL;
res = close(rmidi->fd) < 0 ? -errno : 0; res = close(rmidi->fd) < 0 ? -errno : 0;
free(rmidi); free(rmidi);
return res; return res;
@ -84,7 +87,8 @@ int snd_rawmidi_file_descriptor( void *handle )
snd_rawmidi_t *rmidi; snd_rawmidi_t *rmidi;
rmidi = (snd_rawmidi_t *) handle; rmidi = (snd_rawmidi_t *) handle;
if ( !rmidi ) return -EINVAL; if (!rmidi)
return -EINVAL;
return rmidi->fd; return rmidi->fd;
} }
@ -94,7 +98,8 @@ int snd_rawmidi_block_mode( void *handle, int enable )
long flags; long flags;
rmidi = (snd_rawmidi_t *) handle; rmidi = (snd_rawmidi_t *) handle;
if ( !rmidi ) return -EINVAL; if (!rmidi)
return -EINVAL;
if (fcntl(rmidi->fd, F_GETFL, &flags) < 0) if (fcntl(rmidi->fd, F_GETFL, &flags) < 0)
return -errno; return -errno;
if (enable) if (enable)
@ -111,7 +116,8 @@ int snd_rawmidi_info( void *handle, snd_rawmidi_info_t *info )
snd_rawmidi_t *rmidi; snd_rawmidi_t *rmidi;
rmidi = (snd_rawmidi_t *) handle; rmidi = (snd_rawmidi_t *) handle;
if ( !rmidi ) return -EINVAL; if (!rmidi)
return -EINVAL;
if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_INFO, info) < 0) if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_INFO, info) < 0)
return -errno; return -errno;
return 0; return 0;
@ -123,7 +129,8 @@ int snd_rawmidi_output_switches( void *handle )
int result; int result;
rmidi = (snd_rawmidi_t *) handle; rmidi = (snd_rawmidi_t *) handle;
if ( !rmidi ) return -EINVAL; if (!rmidi)
return -EINVAL;
if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_OSWITCHES, &result) < 0) if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_OSWITCHES, &result) < 0)
return -errno; return -errno;
return result; return result;
@ -136,7 +143,8 @@ int snd_rawmidi_output_switch( void *handle, const char *switch_id )
int idx, switches, err; int idx, switches, err;
rmidi = (snd_rawmidi_t *) handle; rmidi = (snd_rawmidi_t *) handle;
if ( !rmidi ) return -EINVAL; if (!rmidi)
return -EINVAL;
/* bellow implementation isn't optimized for speed */ /* bellow implementation isn't optimized for speed */
/* info about switches should be cached in the snd_mixer_t structure */ /* info about switches should be cached in the snd_mixer_t structure */
if ((switches = snd_rawmidi_output_switches(handle)) < 0) if ((switches = snd_rawmidi_output_switches(handle)) < 0)
@ -155,7 +163,8 @@ int snd_rawmidi_output_switch_read( void *handle, int switchn, snd_rawmidi_switc
snd_rawmidi_t *rmidi; snd_rawmidi_t *rmidi;
rmidi = (snd_rawmidi_t *) handle; rmidi = (snd_rawmidi_t *) handle;
if ( !rmidi ) return -EINVAL; if (!rmidi)
return -EINVAL;
data->switchn = switchn; data->switchn = switchn;
if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_OSWITCH_READ, data) < 0) if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_OSWITCH_READ, data) < 0)
return -errno; return -errno;
@ -167,7 +176,8 @@ int snd_rawmidi_output_switch_write( void *handle, int switchn, snd_rawmidi_swit
snd_rawmidi_t *rmidi; snd_rawmidi_t *rmidi;
rmidi = (snd_rawmidi_t *) handle; rmidi = (snd_rawmidi_t *) handle;
if ( !rmidi ) return -EINVAL; if (!rmidi)
return -EINVAL;
data->switchn = switchn; data->switchn = switchn;
if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_OSWITCH_WRITE, data) < 0) if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_OSWITCH_WRITE, data) < 0)
return -errno; return -errno;
@ -180,7 +190,8 @@ int snd_rawmidi_input_switches( void *handle )
int result; int result;
rmidi = (snd_rawmidi_t *) handle; rmidi = (snd_rawmidi_t *) handle;
if ( !rmidi ) return -EINVAL; if (!rmidi)
return -EINVAL;
if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_ISWITCHES, &result) < 0) if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_ISWITCHES, &result) < 0)
return -errno; return -errno;
return result; return result;
@ -193,7 +204,8 @@ int snd_rawmidi_input_switch( void *handle, const char *switch_id )
int idx, switches, err; int idx, switches, err;
rmidi = (snd_rawmidi_t *) handle; rmidi = (snd_rawmidi_t *) handle;
if ( !rmidi ) return -EINVAL; if (!rmidi)
return -EINVAL;
/* bellow implementation isn't optimized for speed */ /* bellow implementation isn't optimized for speed */
/* info about switches should be cached in the snd_mixer_t structure */ /* info about switches should be cached in the snd_mixer_t structure */
if ((switches = snd_rawmidi_input_switches(handle)) < 0) if ((switches = snd_rawmidi_input_switches(handle)) < 0)
@ -212,7 +224,8 @@ int snd_rawmidi_input_switch_read( void *handle, int switchn, snd_rawmidi_switch
snd_rawmidi_t *rmidi; snd_rawmidi_t *rmidi;
rmidi = (snd_rawmidi_t *) handle; rmidi = (snd_rawmidi_t *) handle;
if ( !rmidi ) return -EINVAL; if (!rmidi)
return -EINVAL;
data->switchn = switchn; data->switchn = switchn;
if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_ISWITCH_READ, data) < 0) if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_ISWITCH_READ, data) < 0)
return -errno; return -errno;
@ -224,7 +237,8 @@ int snd_rawmidi_input_switch_write( void *handle, int switchn, snd_rawmidi_switc
snd_rawmidi_t *rmidi; snd_rawmidi_t *rmidi;
rmidi = (snd_rawmidi_t *) handle; rmidi = (snd_rawmidi_t *) handle;
if ( !rmidi ) return -EINVAL; if (!rmidi)
return -EINVAL;
data->switchn = switchn; data->switchn = switchn;
if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_ISWITCH_WRITE, data) < 0) if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_ISWITCH_WRITE, data) < 0)
return -errno; return -errno;
@ -236,7 +250,8 @@ int snd_rawmidi_output_params( void *handle, snd_rawmidi_output_params_t *params
snd_rawmidi_t *rmidi; snd_rawmidi_t *rmidi;
rmidi = (snd_rawmidi_t *) handle; rmidi = (snd_rawmidi_t *) handle;
if ( !rmidi ) return -EINVAL; if (!rmidi)
return -EINVAL;
if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_OUTPUT_PARAMS, params) < 0) if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_OUTPUT_PARAMS, params) < 0)
return -errno; return -errno;
return 0; return 0;
@ -247,7 +262,8 @@ int snd_rawmidi_input_params( void *handle, snd_rawmidi_input_params_t *params )
snd_rawmidi_t *rmidi; snd_rawmidi_t *rmidi;
rmidi = (snd_rawmidi_t *) handle; rmidi = (snd_rawmidi_t *) handle;
if ( !rmidi ) return -EINVAL; if (!rmidi)
return -EINVAL;
if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_INPUT_PARAMS, params) < 0) if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_INPUT_PARAMS, params) < 0)
return -errno; return -errno;
return 0; return 0;
@ -258,7 +274,8 @@ int snd_rawmidi_output_status( void *handle, snd_rawmidi_output_status_t *status
snd_rawmidi_t *rmidi; snd_rawmidi_t *rmidi;
rmidi = (snd_rawmidi_t *) handle; rmidi = (snd_rawmidi_t *) handle;
if ( !rmidi ) return -EINVAL; if (!rmidi)
return -EINVAL;
if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_OUTPUT_STATUS, status) < 0) if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_OUTPUT_STATUS, status) < 0)
return -errno; return -errno;
return 0; return 0;
@ -269,7 +286,8 @@ int snd_rawmidi_input_status( void *handle, snd_rawmidi_input_status_t *status )
snd_rawmidi_t *rmidi; snd_rawmidi_t *rmidi;
rmidi = (snd_rawmidi_t *) handle; rmidi = (snd_rawmidi_t *) handle;
if ( !rmidi ) return -EINVAL; if (!rmidi)
return -EINVAL;
if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_INPUT_STATUS, status) < 0) if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_INPUT_STATUS, status) < 0)
return -errno; return -errno;
return 0; return 0;
@ -280,7 +298,8 @@ int snd_rawmidi_drain_output( void *handle )
snd_rawmidi_t *rmidi; snd_rawmidi_t *rmidi;
rmidi = (snd_rawmidi_t *) handle; rmidi = (snd_rawmidi_t *) handle;
if ( !rmidi ) return -EINVAL; if (!rmidi)
return -EINVAL;
if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_DRAIN_OUTPUT) < 0) if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_DRAIN_OUTPUT) < 0)
return -errno; return -errno;
return 0; return 0;
@ -291,7 +310,8 @@ int snd_rawmidi_flush_output( void *handle )
snd_rawmidi_t *rmidi; snd_rawmidi_t *rmidi;
rmidi = (snd_rawmidi_t *) handle; rmidi = (snd_rawmidi_t *) handle;
if ( !rmidi ) return -EINVAL; if (!rmidi)
return -EINVAL;
if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_FLUSH_OUTPUT) < 0) if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_FLUSH_OUTPUT) < 0)
return -errno; return -errno;
return 0; return 0;
@ -302,7 +322,8 @@ int snd_rawmidi_flush_input( void *handle )
snd_rawmidi_t *rmidi; snd_rawmidi_t *rmidi;
rmidi = (snd_rawmidi_t *) handle; rmidi = (snd_rawmidi_t *) handle;
if ( !rmidi ) return -EINVAL; if (!rmidi)
return -EINVAL;
if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_FLUSH_INPUT) < 0) if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_FLUSH_INPUT) < 0)
return -errno; return -errno;
return 0; return 0;
@ -314,9 +335,11 @@ ssize_t snd_rawmidi_write( void *handle, const void *buffer, size_t size )
ssize_t result; ssize_t result;
rmidi = (snd_rawmidi_t *) handle; rmidi = (snd_rawmidi_t *) handle;
if ( !rmidi ) return -EINVAL; if (!rmidi)
return -EINVAL;
result = write(rmidi->fd, buffer, size); result = write(rmidi->fd, buffer, size);
if ( result < 0 ) return -errno; if (result < 0)
return -errno;
return result; return result;
} }
@ -326,8 +349,10 @@ ssize_t snd_rawmidi_read( void *handle, void *buffer, size_t size )
ssize_t result; ssize_t result;
rmidi = (snd_rawmidi_t *) handle; rmidi = (snd_rawmidi_t *) handle;
if ( !rmidi ) return -EINVAL; if (!rmidi)
return -EINVAL;
result = read(rmidi->fd, buffer, size); result = read(rmidi->fd, buffer, size);
if ( result < 0 ) return -errno; if (result < 0)
return -errno;
return result; return result;
} }