From a741225e6e6c332b46b7705858a09b3422edcd6b Mon Sep 17 00:00:00 2001 From: Jaroslav Kysela Date: Fri, 27 Nov 1998 14:57:39 +0000 Subject: [PATCH] Coding style... --- src/control/control.c | 964 +++++++++++++++++++++-------------------- src/error.c | 22 +- src/mixer/mixer.c | 392 +++++++++-------- src/pcm/pcm.c | 620 +++++++++++++------------- src/pcm/pcm_loopback.c | 187 ++++---- src/rawmidi/rawmidi.c | 497 +++++++++++---------- 6 files changed, 1402 insertions(+), 1280 deletions(-) diff --git a/src/control/control.c b/src/control/control.c index e743474e..3e07936c 100644 --- a/src/control/control.c +++ b/src/control/control.c @@ -30,532 +30,568 @@ #define SND_FILE_CONTROL "/dev/snd/control%i" #define SND_CTL_VERSION_MAX SND_PROTOCOL_VERSION( 1, 0, 0 ) - + typedef struct { - int card; - int fd; + int card; + int fd; } snd_ctl_t; - -int snd_ctl_open( void **handle, int card ) -{ - int fd, ver; - char filename[32]; - snd_ctl_t *ctl; - - *handle = NULL; - if ( card < 0 || card >= SND_CARDS ) return -EINVAL; - sprintf( filename, SND_FILE_CONTROL, card ); - if ( (fd = open( filename, O_RDWR )) < 0 ) return -errno; - if ( ioctl( fd, SND_CTL_IOCTL_PVERSION, &ver ) < 0 ) { - close( fd ); - return -errno; - } - if ( SND_PROTOCOL_UNCOMPATIBLE( ver, SND_CTL_VERSION_MAX ) ) { - close( fd ); - return -SND_ERROR_UNCOMPATIBLE_VERSION; - } - ctl = (snd_ctl_t *)calloc( 1, sizeof( snd_ctl_t ) ); - if ( ctl == NULL ) { - close( fd ); - return -ENOMEM; - } - ctl -> card = card; - ctl -> fd = fd; - *handle = ctl; - return 0; -} - -int snd_ctl_close( void *handle ) -{ - snd_ctl_t *ctl; - int res; - - ctl = (snd_ctl_t *)handle; - if ( !ctl ) return -EINVAL; - res = close( ctl -> fd ) < 0 ? -errno : 0; - free( ctl ); - return res; -} - -int snd_ctl_file_descriptor( void *handle ) -{ - snd_ctl_t *ctl; - - ctl = (snd_ctl_t *)handle; - if ( !ctl ) return -EINVAL; - return ctl -> fd; -} - -int snd_ctl_hw_info( void *handle, struct snd_ctl_hw_info *info ) -{ - snd_ctl_t *ctl; - - ctl = (snd_ctl_t *)handle; - if ( !ctl ) return -EINVAL; - if ( ioctl( ctl -> fd, SND_CTL_IOCTL_HW_INFO, info ) < 0 ) - return -errno; - return 0; -} - -int snd_ctl_switches( void *handle ) -{ - snd_ctl_t *ctl; - int result; - - ctl = (snd_ctl_t *)handle; - if ( !ctl ) return -EINVAL; - if ( ioctl( ctl -> fd, SND_CTL_IOCTL_SWITCHES, &result ) < 0 ) - return -errno; - return result; -} -int snd_ctl_switch( void *handle, const char *switch_id ) -{ - snd_ctl_t *ctl; - struct snd_ctl_switch uswitch; - int idx, switches, err; - - ctl = (snd_ctl_t *)handle; - if ( !ctl ) return -EINVAL; - /* bellow implementation isn't optimized for speed */ - /* info about switches should be cached in the snd_ctl_t structure */ - if ( (switches = snd_ctl_switches( handle )) < 0 ) - return switches; - for ( idx = 0; idx < switches; idx++ ) { - if ( (err = snd_ctl_switch_read( handle, idx, &uswitch )) < 0 ) - return err; - if ( !strncmp( switch_id, uswitch.name, sizeof( uswitch.name ) ) ) - return idx; - } - return -EINVAL; -} - -int snd_ctl_switch_read( void *handle, int switchn, struct snd_ctl_switch *data ) -{ - snd_ctl_t *ctl; - - ctl = (snd_ctl_t *)handle; - if ( !ctl ) return -EINVAL; - data -> switchn = switchn; - if ( ioctl( ctl -> fd, SND_CTL_IOCTL_SWITCH_READ, data ) < 0 ) - return -errno; - return 0; -} - -int snd_ctl_switch_write( void *handle, int switchn, struct snd_ctl_switch *data ) -{ - snd_ctl_t *ctl; +int snd_ctl_open(void **handle, int card) +{ + int fd, ver; + char filename[32]; + snd_ctl_t *ctl; - ctl = (snd_ctl_t *)handle; - if ( !ctl ) return -EINVAL; - data -> switchn = switchn; - if ( ioctl( ctl -> fd, SND_CTL_IOCTL_SWITCH_WRITE, data ) < 0 ) - return -errno; - return 0; + *handle = NULL; + if (card < 0 || card >= SND_CARDS) + return -EINVAL; + sprintf(filename, SND_FILE_CONTROL, card); + if ((fd = open(filename, O_RDWR)) < 0) + return -errno; + if (ioctl(fd, SND_CTL_IOCTL_PVERSION, &ver) < 0) { + close(fd); + return -errno; + } + if (SND_PROTOCOL_UNCOMPATIBLE(ver, SND_CTL_VERSION_MAX)) { + close(fd); + return -SND_ERROR_UNCOMPATIBLE_VERSION; + } + ctl = (snd_ctl_t *) calloc(1, sizeof(snd_ctl_t)); + if (ctl == NULL) { + close(fd); + return -ENOMEM; + } + ctl->card = card; + ctl->fd = fd; + *handle = ctl; + return 0; } -int snd_ctl_pcm_info( void *handle, int dev, snd_pcm_info_t *info ) +int snd_ctl_close(void *handle) { - snd_ctl_t *ctl; - - ctl = (snd_ctl_t *)handle; - if ( !ctl ) return -EINVAL; - if ( ioctl( ctl -> fd, SND_CTL_IOCTL_PCM_DEVICE, &dev ) < 0 ) - return -errno; - if ( ioctl( ctl -> fd, SND_CTL_IOCTL_PCM_INFO, info ) < 0 ) - return -errno; - return 0; + snd_ctl_t *ctl; + int res; + + ctl = (snd_ctl_t *) handle; + if (!ctl) + return -EINVAL; + res = close(ctl->fd) < 0 ? -errno : 0; + free(ctl); + return res; } -int snd_ctl_pcm_playback_info( void *handle, int dev, snd_pcm_playback_info_t *info ) +int snd_ctl_file_descriptor(void *handle) { - snd_ctl_t *ctl; - - ctl = (snd_ctl_t *)handle; - if ( !ctl ) return -EINVAL; - if ( ioctl( ctl -> fd, SND_CTL_IOCTL_PCM_DEVICE, &dev ) < 0 ) - return -errno; - if ( ioctl( ctl -> fd, SND_CTL_IOCTL_PCM_PLAYBACK_INFO, info ) < 0 ) - return -errno; - return 0; + snd_ctl_t *ctl; + + ctl = (snd_ctl_t *) handle; + if (!ctl) + return -EINVAL; + return ctl->fd; } -int snd_ctl_pcm_record_info( void *handle, int dev, snd_pcm_record_info_t *info ) +int snd_ctl_hw_info(void *handle, struct snd_ctl_hw_info *info) { - snd_ctl_t *ctl; - - ctl = (snd_ctl_t *)handle; - if ( !ctl ) return -EINVAL; - if ( ioctl( ctl -> fd, SND_CTL_IOCTL_PCM_DEVICE, &dev ) < 0 ) - return -errno; - if ( ioctl( ctl -> fd, SND_CTL_IOCTL_PCM_RECORD_INFO, info ) < 0 ) - return -errno; - return 0; + snd_ctl_t *ctl; + + ctl = (snd_ctl_t *) handle; + if (!ctl) + return -EINVAL; + if (ioctl(ctl->fd, SND_CTL_IOCTL_HW_INFO, info) < 0) + return -errno; + return 0; } -int snd_ctl_pcm_playback_switches( void *handle, int dev ) +int snd_ctl_switches(void *handle) { - snd_ctl_t *ctl; - int result; + snd_ctl_t *ctl; + int result; - ctl = (snd_ctl_t *)handle; - if ( !ctl ) return -EINVAL; - if ( ioctl( ctl -> fd, SND_CTL_IOCTL_PCM_DEVICE, &dev ) < 0 ) - return -errno; - if ( ioctl( ctl -> fd, SND_CTL_IOCTL_PCM_PSWITCHES, &result ) < 0 ) - return -errno; - return result; + ctl = (snd_ctl_t *) handle; + if (!ctl) + return -EINVAL; + if (ioctl(ctl->fd, SND_CTL_IOCTL_SWITCHES, &result) < 0) + return -errno; + return result; } -int snd_ctl_pcm_playback_switch( void *handle, int dev, const char *switch_id ) +int snd_ctl_switch(void *handle, const char *switch_id) { - snd_ctl_t *ctl; - snd_pcm_switch_t uswitch; - int idx, switches, err; + snd_ctl_t *ctl; + struct snd_ctl_switch uswitch; + int idx, switches, err; - ctl = (snd_ctl_t *)handle; - if ( !ctl ) return -EINVAL; - /* bellow implementation isn't optimized for speed */ - /* info about switches should be cached in the snd_ctl_t structure */ - if ( (switches = snd_ctl_pcm_playback_switches( handle, dev )) < 0 ) - return switches; - for ( idx = 0; idx < switches; idx++ ) { - if ( (err = snd_ctl_pcm_playback_switch_read( handle, dev, idx, &uswitch )) < 0 ) - return err; - if ( !strncmp( switch_id, uswitch.name, sizeof( uswitch.name ) ) ) - return idx; - } - return -EINVAL; + ctl = (snd_ctl_t *) handle; + if (!ctl) + return -EINVAL; + /* bellow implementation isn't optimized for speed */ + /* info about switches should be cached in the snd_ctl_t structure */ + if ((switches = snd_ctl_switches(handle)) < 0) + return switches; + for (idx = 0; idx < switches; idx++) { + if ((err = snd_ctl_switch_read(handle, idx, &uswitch)) < 0) + return err; + if (!strncmp(switch_id, uswitch.name, sizeof(uswitch.name))) + return idx; + } + return -EINVAL; } -int snd_ctl_pcm_playback_switch_read( void *handle, int dev, int switchn, snd_pcm_switch_t *data ) -{ - snd_ctl_t *ctl; +int snd_ctl_switch_read(void *handle, int switchn, struct snd_ctl_switch *data) +{ + snd_ctl_t *ctl; - ctl = (snd_ctl_t *)handle; - if ( !ctl ) return -EINVAL; - data -> switchn = switchn; - if ( ioctl( ctl -> fd, SND_CTL_IOCTL_PCM_DEVICE, &dev ) < 0 ) - return -errno; - if ( ioctl( ctl -> fd, SND_CTL_IOCTL_PCM_PSWITCH_READ, data ) < 0 ) - return -errno; - return 0; + ctl = (snd_ctl_t *) handle; + if (!ctl) + return -EINVAL; + data->switchn = switchn; + if (ioctl(ctl->fd, SND_CTL_IOCTL_SWITCH_READ, data) < 0) + return -errno; + return 0; } -int snd_ctl_pcm_playback_switch_write( void *handle, int dev, int switchn, snd_pcm_switch_t *data ) +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; - if ( !ctl ) return -EINVAL; - data -> switchn = switchn; - if ( ioctl( ctl -> fd, SND_CTL_IOCTL_PCM_DEVICE, &dev ) < 0 ) - return -errno; - if ( ioctl( ctl -> fd, SND_CTL_IOCTL_PCM_PSWITCH_WRITE, data ) < 0 ) - return -errno; - return 0; + ctl = (snd_ctl_t *) handle; + if (!ctl) + return -EINVAL; + data->switchn = switchn; + if (ioctl(ctl->fd, SND_CTL_IOCTL_SWITCH_WRITE, data) < 0) + return -errno; + return 0; } -int snd_ctl_pcm_record_switches( void *handle, int dev ) -{ - snd_ctl_t *ctl; - int result; - - ctl = (snd_ctl_t *)handle; - if ( !ctl ) return -EINVAL; - if ( ioctl( ctl -> fd, SND_CTL_IOCTL_PCM_DEVICE, &dev ) < 0 ) - return -errno; - if ( ioctl( ctl -> fd, SND_CTL_IOCTL_PCM_RSWITCHES, &result ) < 0 ) - return -errno; - return result; -} - -int snd_ctl_pcm_record_switch( void *handle, int dev, const char *switch_id ) +int snd_ctl_pcm_info(void *handle, int dev, snd_pcm_info_t * info) { - snd_ctl_t *ctl; - snd_pcm_switch_t uswitch; - int idx, switches, err; + snd_ctl_t *ctl; - ctl = (snd_ctl_t *)handle; - if ( !ctl ) return -EINVAL; - /* bellow implementation isn't optimized for speed */ - /* info about switches should be cached in the snd_ctl_t structure */ - if ( (switches = snd_ctl_pcm_record_switches( handle, dev )) < 0 ) - return switches; - for ( idx = 0; idx < switches; idx++ ) { - if ( (err = snd_ctl_pcm_record_switch_read( handle, dev, idx, &uswitch )) < 0 ) - return err; - if ( !strncmp( switch_id, uswitch.name, sizeof( uswitch.name ) ) ) - return idx; - } - return -EINVAL; + ctl = (snd_ctl_t *) handle; + if (!ctl) + return -EINVAL; + if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_DEVICE, &dev) < 0) + return -errno; + if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_INFO, info) < 0) + return -errno; + return 0; } -int snd_ctl_pcm_record_switch_read( void *handle, int dev, int switchn, snd_pcm_switch_t *data ) +int snd_ctl_pcm_playback_info(void *handle, int dev, snd_pcm_playback_info_t * info) { - snd_ctl_t *ctl; + snd_ctl_t *ctl; - ctl = (snd_ctl_t *)handle; - if ( !ctl ) return -EINVAL; - data -> switchn = switchn; - if ( ioctl( ctl -> fd, SND_CTL_IOCTL_PCM_DEVICE, &dev ) < 0 ) - return -errno; - if ( ioctl( ctl -> fd, SND_CTL_IOCTL_PCM_RSWITCH_READ, data ) < 0 ) - return -errno; - return 0; + ctl = (snd_ctl_t *) handle; + if (!ctl) + return -EINVAL; + if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_DEVICE, &dev) < 0) + return -errno; + if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_PLAYBACK_INFO, info) < 0) + return -errno; + return 0; } -int snd_ctl_pcm_record_switch_write( void *handle, int dev, int switchn, snd_pcm_switch_t *data ) +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; + if (!ctl) + return -EINVAL; + if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_DEVICE, &dev) < 0) + return -errno; + if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_RECORD_INFO, info) < 0) + return -errno; + return 0; +} + +int snd_ctl_pcm_playback_switches(void *handle, int dev) +{ + snd_ctl_t *ctl; + int result; - ctl = (snd_ctl_t *)handle; - if ( !ctl ) return -EINVAL; - data -> switchn = switchn; - if ( ioctl( ctl -> fd, SND_CTL_IOCTL_PCM_DEVICE, &dev ) < 0 ) - return -errno; - if ( ioctl( ctl -> fd, SND_CTL_IOCTL_PCM_RSWITCH_WRITE, data ) < 0 ) - return -errno; - return 0; -} - -int snd_ctl_mixer_info( void *handle, int dev, snd_mixer_info_t *info ) + ctl = (snd_ctl_t *) handle; + if (!ctl) + return -EINVAL; + if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_DEVICE, &dev) < 0) + return -errno; + if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_PSWITCHES, &result) < 0) + return -errno; + return result; +} + +int snd_ctl_pcm_playback_switch(void *handle, int dev, const char *switch_id) +{ + snd_ctl_t *ctl; + snd_pcm_switch_t uswitch; + int idx, switches, err; + + ctl = (snd_ctl_t *) handle; + if (!ctl) + return -EINVAL; + /* bellow implementation isn't optimized for speed */ + /* info about switches should be cached in the snd_ctl_t structure */ + if ((switches = snd_ctl_pcm_playback_switches(handle, dev)) < 0) + return switches; + for (idx = 0; idx < switches; idx++) { + if ((err = snd_ctl_pcm_playback_switch_read(handle, dev, idx, &uswitch)) < 0) + return err; + if (!strncmp(switch_id, uswitch.name, sizeof(uswitch.name))) + return idx; + } + return -EINVAL; +} + +int snd_ctl_pcm_playback_switch_read(void *handle, int dev, int switchn, snd_pcm_switch_t * data) { - snd_ctl_t *ctl; - - ctl = (snd_ctl_t *)handle; - if ( !ctl ) return -EINVAL; - if ( ioctl( ctl -> fd, SND_CTL_IOCTL_MIXER_DEVICE, &dev ) < 0 ) - return -errno; - if ( ioctl( ctl -> fd, SND_CTL_IOCTL_MIXER_INFO, info ) < 0 ) - return -errno; - return 0; -} - -int snd_ctl_mixer_switches( void *handle, int dev ) + snd_ctl_t *ctl; + + ctl = (snd_ctl_t *) handle; + if (!ctl) + return -EINVAL; + data->switchn = switchn; + if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_DEVICE, &dev) < 0) + return -errno; + if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_PSWITCH_READ, data) < 0) + return -errno; + return 0; +} + +int snd_ctl_pcm_playback_switch_write(void *handle, int dev, int switchn, snd_pcm_switch_t * data) { - snd_ctl_t *ctl; - int result; + snd_ctl_t *ctl; + + ctl = (snd_ctl_t *) handle; + if (!ctl) + return -EINVAL; + data->switchn = switchn; + if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_DEVICE, &dev) < 0) + return -errno; + if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_PSWITCH_WRITE, data) < 0) + return -errno; + return 0; +} - ctl = (snd_ctl_t *)handle; - if ( !ctl ) return -EINVAL; - if ( ioctl( ctl -> fd, SND_CTL_IOCTL_MIXER_DEVICE, &dev ) < 0 ) - return -errno; - if ( ioctl( ctl -> fd, SND_CTL_IOCTL_MIXER_SWITCHES, &result ) < 0 ) - return -errno; - return result; -} - -int snd_ctl_mixer_switch( void *handle, int dev, const char *switch_id ) +int snd_ctl_pcm_record_switches(void *handle, int dev) { - snd_ctl_t *ctl; - snd_mixer_switch_t uswitch; - int idx, switches, err; + snd_ctl_t *ctl; + int result; - ctl = (snd_ctl_t *)handle; - if ( !ctl ) return -EINVAL; - /* bellow implementation isn't optimized for speed */ - /* info about switches should be cached in the snd_ctl_t structure */ - if ( (switches = snd_ctl_mixer_switches( handle, dev )) < 0 ) - return switches; - for ( idx = 0; idx < switches; idx++ ) { - if ( (err = snd_ctl_mixer_switch_read( handle, dev, idx, &uswitch )) < 0 ) - return err; - if ( !strncmp( switch_id, uswitch.name, sizeof( uswitch.name ) ) ) - return idx; - } - return -EINVAL; -} - -int snd_ctl_mixer_switch_read( void *handle, int dev, int switchn, snd_mixer_switch_t *data ) + ctl = (snd_ctl_t *) handle; + if (!ctl) + return -EINVAL; + if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_DEVICE, &dev) < 0) + return -errno; + if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_RSWITCHES, &result) < 0) + return -errno; + return result; +} + +int snd_ctl_pcm_record_switch(void *handle, int dev, const char *switch_id) +{ + snd_ctl_t *ctl; + snd_pcm_switch_t uswitch; + int idx, switches, err; + + ctl = (snd_ctl_t *) handle; + if (!ctl) + return -EINVAL; + /* bellow implementation isn't optimized for speed */ + /* info about switches should be cached in the snd_ctl_t structure */ + if ((switches = snd_ctl_pcm_record_switches(handle, dev)) < 0) + return switches; + for (idx = 0; idx < switches; idx++) { + if ((err = snd_ctl_pcm_record_switch_read(handle, dev, idx, &uswitch)) < 0) + return err; + if (!strncmp(switch_id, uswitch.name, sizeof(uswitch.name))) + return idx; + } + return -EINVAL; +} + +int snd_ctl_pcm_record_switch_read(void *handle, int dev, int switchn, snd_pcm_switch_t * data) +{ + snd_ctl_t *ctl; + + ctl = (snd_ctl_t *) handle; + if (!ctl) + return -EINVAL; + data->switchn = switchn; + if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_DEVICE, &dev) < 0) + return -errno; + if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_RSWITCH_READ, data) < 0) + return -errno; + return 0; +} + +int snd_ctl_pcm_record_switch_write(void *handle, int dev, int switchn, snd_pcm_switch_t * data) +{ + snd_ctl_t *ctl; + + ctl = (snd_ctl_t *) handle; + if (!ctl) + return -EINVAL; + data->switchn = switchn; + if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_DEVICE, &dev) < 0) + return -errno; + if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_RSWITCH_WRITE, data) < 0) + return -errno; + return 0; +} + +int snd_ctl_mixer_info(void *handle, int dev, snd_mixer_info_t * info) { - snd_ctl_t *ctl; - - ctl = (snd_ctl_t *)handle; - if ( !ctl ) return -EINVAL; - data -> switchn = switchn; - if ( ioctl( ctl -> fd, SND_CTL_IOCTL_MIXER_DEVICE, &dev ) < 0 ) - return -errno; - if ( ioctl( ctl -> fd, SND_CTL_IOCTL_MIXER_SWITCH_READ, data ) < 0 ) - return -errno; - return 0; -} - -int snd_ctl_mixer_switch_write( void *handle, int dev, int switchn, snd_mixer_switch_t *data ) + snd_ctl_t *ctl; + + ctl = (snd_ctl_t *) handle; + if (!ctl) + return -EINVAL; + if (ioctl(ctl->fd, SND_CTL_IOCTL_MIXER_DEVICE, &dev) < 0) + return -errno; + if (ioctl(ctl->fd, SND_CTL_IOCTL_MIXER_INFO, info) < 0) + return -errno; + return 0; +} + +int snd_ctl_mixer_switches(void *handle, int dev) { - snd_ctl_t *ctl; + snd_ctl_t *ctl; + int result; - ctl = (snd_ctl_t *)handle; - if ( !ctl ) return -EINVAL; - data -> switchn = switchn; - if ( ioctl( ctl -> fd, SND_CTL_IOCTL_MIXER_DEVICE, &dev ) < 0 ) - return -errno; - if ( ioctl( ctl -> fd, SND_CTL_IOCTL_MIXER_SWITCH_WRITE, data ) < 0 ) - return -errno; - return 0; -} - -int snd_ctl_rawmidi_info( void *handle, int dev, snd_rawmidi_info_t *info ) + ctl = (snd_ctl_t *) handle; + if (!ctl) + return -EINVAL; + if (ioctl(ctl->fd, SND_CTL_IOCTL_MIXER_DEVICE, &dev) < 0) + return -errno; + if (ioctl(ctl->fd, SND_CTL_IOCTL_MIXER_SWITCHES, &result) < 0) + return -errno; + return result; +} + +int snd_ctl_mixer_switch(void *handle, int dev, const char *switch_id) { - snd_ctl_t *ctl; - - ctl = (snd_ctl_t *)handle; - if ( !ctl ) return -EINVAL; - if ( ioctl( ctl -> fd, SND_CTL_IOCTL_RAWMIDI_DEVICE, &dev ) < 0 ) - return -errno; - if ( ioctl( ctl -> fd, SND_CTL_IOCTL_RAWMIDI_INFO, info ) < 0 ) - return -errno; - return 0; + snd_ctl_t *ctl; + snd_mixer_switch_t uswitch; + int idx, switches, err; + + ctl = (snd_ctl_t *) handle; + if (!ctl) + return -EINVAL; + /* bellow implementation isn't optimized for speed */ + /* info about switches should be cached in the snd_ctl_t structure */ + if ((switches = snd_ctl_mixer_switches(handle, dev)) < 0) + return switches; + for (idx = 0; idx < switches; idx++) { + if ((err = snd_ctl_mixer_switch_read(handle, dev, idx, &uswitch)) < 0) + return err; + if (!strncmp(switch_id, uswitch.name, sizeof(uswitch.name))) + return idx; + } + return -EINVAL; } - -int snd_ctl_rawmidi_output_info( void *handle, int dev, snd_rawmidi_output_info_t *info ) -{ - snd_ctl_t *ctl; - - ctl = (snd_ctl_t *)handle; - if ( !ctl ) return -EINVAL; - if ( ioctl( ctl -> fd, SND_CTL_IOCTL_RAWMIDI_DEVICE, &dev ) < 0 ) - return -errno; - if ( ioctl( ctl -> fd, SND_CTL_IOCTL_RAWMIDI_OUTPUT_INFO, info ) < 0 ) - return -errno; - return 0; + +int snd_ctl_mixer_switch_read(void *handle, int dev, int switchn, snd_mixer_switch_t * data) +{ + snd_ctl_t *ctl; + + ctl = (snd_ctl_t *) handle; + if (!ctl) + return -EINVAL; + data->switchn = switchn; + if (ioctl(ctl->fd, SND_CTL_IOCTL_MIXER_DEVICE, &dev) < 0) + return -errno; + if (ioctl(ctl->fd, SND_CTL_IOCTL_MIXER_SWITCH_READ, data) < 0) + return -errno; + return 0; } -int snd_ctl_rawmidi_input_info( void *handle, int dev, snd_rawmidi_input_info_t *info ) -{ - snd_ctl_t *ctl; - - ctl = (snd_ctl_t *)handle; - if ( !ctl ) return -EINVAL; - if ( ioctl( ctl -> fd, SND_CTL_IOCTL_RAWMIDI_DEVICE, &dev ) < 0 ) - return -errno; - if ( ioctl( ctl -> fd, SND_CTL_IOCTL_RAWMIDI_INPUT_INFO, info ) < 0 ) - return -errno; - return 0; -} - -int snd_ctl_rawmidi_output_switches( void *handle, int dev ) +int snd_ctl_mixer_switch_write(void *handle, int dev, int switchn, snd_mixer_switch_t * data) { - snd_ctl_t *ctl; - int result; - - ctl = (snd_ctl_t *)handle; - if ( !ctl ) return -EINVAL; - if ( ioctl( ctl -> fd, SND_CTL_IOCTL_RAWMIDI_DEVICE, &dev ) < 0 ) - return -errno; - if ( ioctl( ctl -> fd, SND_CTL_IOCTL_RAWMIDI_OSWITCHES, &result ) < 0 ) - return -errno; - return result; -} + snd_ctl_t *ctl; -int snd_ctl_rawmidi_output_switch( void *handle, int dev, const char *switch_id ) -{ - snd_ctl_t *ctl; - snd_rawmidi_switch_t uswitch; - int idx, switches, err; - - ctl = (snd_ctl_t *)handle; - if ( !ctl ) return -EINVAL; - /* bellow implementation isn't optimized for speed */ - /* info about switches should be cached in the snd_ctl_t structure */ - if ( (switches = snd_ctl_rawmidi_output_switches( handle, dev )) < 0 ) - return switches; - for ( idx = 0; idx < switches; idx++ ) { - if ( (err = snd_ctl_rawmidi_output_switch_read( handle, dev, idx, &uswitch )) < 0 ) - return err; - if ( !strncmp( switch_id, uswitch.name, sizeof( uswitch.name ) ) ) - return idx; - } - return -EINVAL; + ctl = (snd_ctl_t *) handle; + if (!ctl) + return -EINVAL; + data->switchn = switchn; + if (ioctl(ctl->fd, SND_CTL_IOCTL_MIXER_DEVICE, &dev) < 0) + return -errno; + if (ioctl(ctl->fd, SND_CTL_IOCTL_MIXER_SWITCH_WRITE, data) < 0) + return -errno; + return 0; } -int snd_ctl_rawmidi_output_switch_read( void *handle, int dev, int switchn, snd_rawmidi_switch_t *data ) -{ - snd_ctl_t *ctl; - - ctl = (snd_ctl_t *)handle; - if ( !ctl ) return -EINVAL; - data -> switchn = switchn; - if ( ioctl( ctl -> fd, SND_CTL_IOCTL_RAWMIDI_DEVICE, &dev ) < 0 ) - return -errno; - if ( ioctl( ctl -> fd, SND_CTL_IOCTL_RAWMIDI_OSWITCH_READ, data ) < 0 ) - return -errno; - return 0; -} - -int snd_ctl_rawmidi_output_switch_write( void *handle, int dev, int switchn, snd_rawmidi_switch_t *data ) -{ - snd_ctl_t *ctl; - - ctl = (snd_ctl_t *)handle; - if ( !ctl ) return -EINVAL; - data -> switchn = switchn; - if ( ioctl( ctl -> fd, SND_CTL_IOCTL_RAWMIDI_DEVICE, &dev ) < 0 ) - return -errno; - if ( ioctl( ctl -> fd, SND_CTL_IOCTL_RAWMIDI_OSWITCH_WRITE, data ) < 0 ) - return -errno; - return 0; -} - -int snd_ctl_rawmidi_input_switches( void *handle, int dev ) -{ - snd_ctl_t *ctl; - int result; - - ctl = (snd_ctl_t *)handle; - if ( !ctl ) return -EINVAL; - if ( ioctl( ctl -> fd, SND_CTL_IOCTL_RAWMIDI_DEVICE, &dev ) < 0 ) - return -errno; - if ( ioctl( ctl -> fd, SND_CTL_IOCTL_RAWMIDI_ISWITCHES, &result ) < 0 ) - return -errno; - return result; -} - -int snd_ctl_rawmidi_input_switch( void *handle, int dev, const char *switch_id ) -{ - snd_ctl_t *ctl; - snd_rawmidi_switch_t uswitch; - int idx, switches, err; +int snd_ctl_rawmidi_info(void *handle, int dev, snd_rawmidi_info_t * info) +{ + snd_ctl_t *ctl; - ctl = (snd_ctl_t *)handle; - if ( !ctl ) return -EINVAL; - /* bellow implementation isn't optimized for speed */ - /* info about switches should be cached in the snd_ctl_t structure */ - if ( (switches = snd_ctl_rawmidi_input_switches( handle, dev )) < 0 ) - return switches; - for ( idx = 0; idx < switches; idx++ ) { - if ( (err = snd_ctl_rawmidi_input_switch_read( handle, dev, idx, &uswitch )) < 0 ) - return err; - if ( !strncmp( switch_id, uswitch.name, sizeof( uswitch.name ) ) ) - return idx; - } - return -EINVAL; + ctl = (snd_ctl_t *) handle; + if (!ctl) + return -EINVAL; + if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_DEVICE, &dev) < 0) + return -errno; + if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_INFO, info) < 0) + return -errno; + return 0; } -int snd_ctl_rawmidi_input_switch_read( void *handle, int dev, int switchn, snd_rawmidi_switch_t *data ) +int snd_ctl_rawmidi_output_info(void *handle, int dev, snd_rawmidi_output_info_t * info) { - snd_ctl_t *ctl; + snd_ctl_t *ctl; - ctl = (snd_ctl_t *)handle; - if ( !ctl ) return -EINVAL; - data -> switchn = switchn; - if ( ioctl( ctl -> fd, SND_CTL_IOCTL_RAWMIDI_DEVICE, &dev ) < 0 ) - return -errno; - if ( ioctl( ctl -> fd, SND_CTL_IOCTL_RAWMIDI_ISWITCH_READ, data ) < 0 ) - return -errno; - return 0; + ctl = (snd_ctl_t *) handle; + if (!ctl) + return -EINVAL; + if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_DEVICE, &dev) < 0) + return -errno; + if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_OUTPUT_INFO, info) < 0) + return -errno; + return 0; } -int snd_ctl_rawmidi_input_switch_write( void *handle, int dev, int switchn, snd_rawmidi_switch_t *data ) +int snd_ctl_rawmidi_input_info(void *handle, int dev, snd_rawmidi_input_info_t * info) +{ + snd_ctl_t *ctl; + + ctl = (snd_ctl_t *) handle; + if (!ctl) + return -EINVAL; + if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_DEVICE, &dev) < 0) + return -errno; + if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_INPUT_INFO, info) < 0) + return -errno; + return 0; +} + +int snd_ctl_rawmidi_output_switches(void *handle, int dev) +{ + snd_ctl_t *ctl; + int result; + + ctl = (snd_ctl_t *) handle; + if (!ctl) + return -EINVAL; + if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_DEVICE, &dev) < 0) + return -errno; + if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_OSWITCHES, &result) < 0) + return -errno; + return result; +} + +int snd_ctl_rawmidi_output_switch(void *handle, int dev, const char *switch_id) +{ + snd_ctl_t *ctl; + snd_rawmidi_switch_t uswitch; + int idx, switches, err; + + ctl = (snd_ctl_t *) handle; + if (!ctl) + return -EINVAL; + /* bellow implementation isn't optimized for speed */ + /* info about switches should be cached in the snd_ctl_t structure */ + if ((switches = snd_ctl_rawmidi_output_switches(handle, dev)) < 0) + return switches; + for (idx = 0; idx < switches; idx++) { + if ((err = snd_ctl_rawmidi_output_switch_read(handle, dev, idx, &uswitch)) < 0) + return err; + if (!strncmp(switch_id, uswitch.name, sizeof(uswitch.name))) + return idx; + } + return -EINVAL; +} + +int snd_ctl_rawmidi_output_switch_read(void *handle, int dev, int switchn, snd_rawmidi_switch_t * data) +{ + snd_ctl_t *ctl; + + ctl = (snd_ctl_t *) handle; + if (!ctl) + return -EINVAL; + data->switchn = switchn; + if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_DEVICE, &dev) < 0) + return -errno; + if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_OSWITCH_READ, data) < 0) + return -errno; + return 0; +} + +int snd_ctl_rawmidi_output_switch_write(void *handle, int dev, int switchn, snd_rawmidi_switch_t * data) { - snd_ctl_t *ctl; - - ctl = (snd_ctl_t *)handle; - if ( !ctl ) return -EINVAL; - data -> switchn = switchn; - if ( ioctl( ctl -> fd, SND_CTL_IOCTL_RAWMIDI_DEVICE, &dev ) < 0 ) - return -errno; - if ( ioctl( ctl -> fd, SND_CTL_IOCTL_RAWMIDI_ISWITCH_WRITE, data ) < 0 ) - return -errno; - return 0; + snd_ctl_t *ctl; + + ctl = (snd_ctl_t *) handle; + if (!ctl) + return -EINVAL; + data->switchn = switchn; + if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_DEVICE, &dev) < 0) + return -errno; + if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_OSWITCH_WRITE, data) < 0) + return -errno; + return 0; +} + +int snd_ctl_rawmidi_input_switches(void *handle, int dev) +{ + snd_ctl_t *ctl; + int result; + + ctl = (snd_ctl_t *) handle; + if (!ctl) + return -EINVAL; + if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_DEVICE, &dev) < 0) + return -errno; + if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_ISWITCHES, &result) < 0) + return -errno; + return result; +} + +int snd_ctl_rawmidi_input_switch(void *handle, int dev, const char *switch_id) +{ + snd_ctl_t *ctl; + snd_rawmidi_switch_t uswitch; + int idx, switches, err; + + ctl = (snd_ctl_t *) handle; + if (!ctl) + return -EINVAL; + /* bellow implementation isn't optimized for speed */ + /* info about switches should be cached in the snd_ctl_t structure */ + if ((switches = snd_ctl_rawmidi_input_switches(handle, dev)) < 0) + return switches; + for (idx = 0; idx < switches; idx++) { + if ((err = snd_ctl_rawmidi_input_switch_read(handle, dev, idx, &uswitch)) < 0) + return err; + if (!strncmp(switch_id, uswitch.name, sizeof(uswitch.name))) + return idx; + } + return -EINVAL; +} + +int snd_ctl_rawmidi_input_switch_read(void *handle, int dev, int switchn, snd_rawmidi_switch_t * data) +{ + snd_ctl_t *ctl; + + ctl = (snd_ctl_t *) handle; + if (!ctl) + return -EINVAL; + data->switchn = switchn; + if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_DEVICE, &dev) < 0) + return -errno; + if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_ISWITCH_READ, data) < 0) + return -errno; + return 0; +} + +int snd_ctl_rawmidi_input_switch_write(void *handle, int dev, int switchn, snd_rawmidi_switch_t * data) +{ + snd_ctl_t *ctl; + + ctl = (snd_ctl_t *) handle; + if (!ctl) + return -EINVAL; + data->switchn = switchn; + if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_DEVICE, &dev) < 0) + return -errno; + if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_ISWITCH_WRITE, data) < 0) + return -errno; + return 0; } diff --git a/src/error.c b/src/error.c index 387d6da7..ab655c3f 100644 --- a/src/error.c +++ b/src/error.c @@ -26,17 +26,19 @@ #include #include "asoundlib.h" -static const char *snd_error_codes[] = { - "Sound protocol isn't compatible" +static const char *snd_error_codes[] = +{ + "Sound protocol isn't compatible" }; -const char *snd_strerror( int errnum ) +const char *snd_strerror(int errnum) { - if ( errnum < 0 ) errnum = -errnum; - if ( errnum < SND_ERROR_BEGIN ) - return (const char *)strerror( errnum ); - errnum -= SND_ERROR_BEGIN; - if ( errnum >= sizeof( snd_error_codes ) / sizeof( const char * ) ) - return "Unknown error"; - return snd_error_codes[ errnum ]; + if (errnum < 0) + errnum = -errnum; + if (errnum < SND_ERROR_BEGIN) + return (const char *) strerror(errnum); + errnum -= SND_ERROR_BEGIN; + if (errnum >= sizeof(snd_error_codes) / sizeof(const char *)) + return "Unknown error"; + return snd_error_codes[errnum]; } diff --git a/src/mixer/mixer.c b/src/mixer/mixer.c index 0e0a413a..66f84a09 100644 --- a/src/mixer/mixer.c +++ b/src/mixer/mixer.c @@ -30,236 +30,254 @@ #define SND_FILE_MIXER "/dev/snd/mixer%i%i" #define SND_MIXER_VERSION_MAX SND_PROTOCOL_VERSION( 1, 1, 0 ) - + typedef struct { - int card; - int device; - int fd; + int card; + int device; + int fd; } snd_mixer_t; - -int snd_mixer_open( void **handle, int card, int device ) + +int snd_mixer_open(void **handle, int card, int device) { - int fd, ver; - char filename[32]; - snd_mixer_t *mixer; - - *handle = NULL; - if ( card < 0 || card >= SND_CARDS ) return -EINVAL; - sprintf( filename, SND_FILE_MIXER, card, device ); - if ( (fd = open( filename, O_RDWR )) < 0 ) return -errno; - if ( ioctl( fd, SND_MIXER_IOCTL_PVERSION, &ver ) < 0 ) { - close( fd ); - return -errno; - } - if ( SND_PROTOCOL_UNCOMPATIBLE( ver, SND_MIXER_VERSION_MAX ) ) { - close( fd ); - return -SND_ERROR_UNCOMPATIBLE_VERSION; - } - mixer = (snd_mixer_t *)calloc( 1, sizeof( snd_mixer_t ) ); - if ( mixer == NULL ) { - close( fd ); - return -ENOMEM; - } - mixer -> card = card; - mixer -> device = device; - mixer -> fd = fd; - *handle = mixer; - return 0; + int fd, ver; + char filename[32]; + snd_mixer_t *mixer; + + *handle = NULL; + if (card < 0 || card >= SND_CARDS) + return -EINVAL; + sprintf(filename, SND_FILE_MIXER, card, device); + if ((fd = open(filename, O_RDWR)) < 0) + return -errno; + if (ioctl(fd, SND_MIXER_IOCTL_PVERSION, &ver) < 0) { + close(fd); + return -errno; + } + if (SND_PROTOCOL_UNCOMPATIBLE(ver, SND_MIXER_VERSION_MAX)) { + close(fd); + return -SND_ERROR_UNCOMPATIBLE_VERSION; + } + mixer = (snd_mixer_t *) calloc(1, sizeof(snd_mixer_t)); + if (mixer == NULL) { + close(fd); + return -ENOMEM; + } + mixer->card = card; + mixer->device = device; + mixer->fd = fd; + *handle = mixer; + return 0; } -int snd_mixer_close( void *handle ) +int snd_mixer_close(void *handle) { - snd_mixer_t *mixer; - int res; - - mixer = (snd_mixer_t *)handle; - if ( !mixer ) return -EINVAL; - res = close( mixer -> fd ) < 0 ? -errno : 0; - free( mixer ); - return res; + snd_mixer_t *mixer; + int res; + + mixer = (snd_mixer_t *) handle; + if (!mixer) + return -EINVAL; + res = close(mixer->fd) < 0 ? -errno : 0; + free(mixer); + return res; } -int snd_mixer_file_descriptor( void *handle ) +int snd_mixer_file_descriptor(void *handle) { - snd_mixer_t *mixer; - - mixer = (snd_mixer_t *)handle; - if ( !mixer ) return -EINVAL; - return mixer -> fd; + snd_mixer_t *mixer; + + mixer = (snd_mixer_t *) handle; + if (!mixer) + return -EINVAL; + return mixer->fd; } -int snd_mixer_channels( void *handle ) +int snd_mixer_channels(void *handle) { - snd_mixer_t *mixer; - int result; - - mixer = (snd_mixer_t *)handle; - if ( !mixer ) return -EINVAL; - if ( ioctl( mixer -> fd, SND_MIXER_IOCTL_CHANNELS, &result ) < 0 ) - return -errno; - return result; + snd_mixer_t *mixer; + int result; + + mixer = (snd_mixer_t *) handle; + if (!mixer) + return -EINVAL; + if (ioctl(mixer->fd, SND_MIXER_IOCTL_CHANNELS, &result) < 0) + return -errno; + return result; } -int snd_mixer_info( void *handle, snd_mixer_info_t *info ) +int snd_mixer_info(void *handle, snd_mixer_info_t * info) { - snd_mixer_t *mixer; - - mixer = (snd_mixer_t *)handle; - if ( !mixer ) return -EINVAL; - if ( ioctl( mixer -> fd, SND_MIXER_IOCTL_INFO, info ) < 0 ) - return -errno; - return 0; + snd_mixer_t *mixer; + + mixer = (snd_mixer_t *) handle; + if (!mixer) + return -EINVAL; + if (ioctl(mixer->fd, SND_MIXER_IOCTL_INFO, info) < 0) + return -errno; + return 0; } -int snd_mixer_exact_mode( void *handle, int enable ) +int snd_mixer_exact_mode(void *handle, int enable) { - snd_mixer_t *mixer; - - mixer = (snd_mixer_t *)handle; - if ( !mixer ) return -EINVAL; - if ( ioctl( mixer -> fd, SND_MIXER_IOCTL_EXACT, &enable ) < 0 ) - return -errno; - return 0; + snd_mixer_t *mixer; + + mixer = (snd_mixer_t *) handle; + if (!mixer) + return -EINVAL; + if (ioctl(mixer->fd, SND_MIXER_IOCTL_EXACT, &enable) < 0) + return -errno; + return 0; } -int snd_mixer_channel( void *handle, const char *channel_id ) +int snd_mixer_channel(void *handle, const char *channel_id) { - snd_mixer_t *mixer; - snd_mixer_channel_info_t info; - int idx, channels, err; - - mixer = (snd_mixer_t *)handle; - if ( !mixer ) return -EINVAL; - /* bellow implementation isn't optimized for speed */ - /* info about channels should be cached in the snd_mixer_t structure */ - if ( (channels = snd_mixer_channels( handle )) < 0 ) - return channels; - for ( idx = 0; idx < channels; idx++ ) { - if ( (err = snd_mixer_channel_info( handle, idx, &info )) < 0 ) - return err; - if ( !strncmp( channel_id, info.name, sizeof( info.name ) ) ) - return idx; - } - return -EINVAL; + snd_mixer_t *mixer; + snd_mixer_channel_info_t info; + int idx, channels, err; + + mixer = (snd_mixer_t *) handle; + if (!mixer) + return -EINVAL; + /* bellow implementation isn't optimized for speed */ + /* info about channels should be cached in the snd_mixer_t structure */ + if ((channels = snd_mixer_channels(handle)) < 0) + return channels; + for (idx = 0; idx < channels; idx++) { + if ((err = snd_mixer_channel_info(handle, idx, &info)) < 0) + return err; + if (!strncmp(channel_id, info.name, sizeof(info.name))) + return idx; + } + return -EINVAL; } -int snd_mixer_channel_info( void *handle, int channel, snd_mixer_channel_info_t *info ) +int snd_mixer_channel_info(void *handle, int channel, snd_mixer_channel_info_t * info) { - snd_mixer_t *mixer; - - mixer = (snd_mixer_t *)handle; - if ( !mixer ) return -EINVAL; - info -> channel = channel; - if ( ioctl( mixer -> fd, SND_MIXER_IOCTL_CHANNEL_INFO, info ) < 0 ) - return -errno; - return 0; + snd_mixer_t *mixer; + + mixer = (snd_mixer_t *) handle; + if (!mixer) + return -EINVAL; + info->channel = channel; + if (ioctl(mixer->fd, SND_MIXER_IOCTL_CHANNEL_INFO, info) < 0) + return -errno; + return 0; } -int snd_mixer_channel_read( void *handle, int channel, snd_mixer_channel_t *data ) +int snd_mixer_channel_read(void *handle, int channel, snd_mixer_channel_t * data) { - snd_mixer_t *mixer; - - mixer = (snd_mixer_t *)handle; - if ( !mixer ) return -EINVAL; - data -> channel = channel; - if ( ioctl( mixer -> fd, SND_MIXER_IOCTL_CHANNEL_READ, data ) < 0 ) - return -errno; - return 0; + snd_mixer_t *mixer; + + mixer = (snd_mixer_t *) handle; + if (!mixer) + return -EINVAL; + data->channel = channel; + if (ioctl(mixer->fd, SND_MIXER_IOCTL_CHANNEL_READ, data) < 0) + return -errno; + return 0; } -int snd_mixer_channel_write( void *handle, int channel, snd_mixer_channel_t *data ) +int snd_mixer_channel_write(void *handle, int channel, snd_mixer_channel_t * data) { - snd_mixer_t *mixer; - - mixer = (snd_mixer_t *)handle; - if ( !mixer ) return -EINVAL; - data -> channel = channel; - if ( ioctl( mixer -> fd, SND_MIXER_IOCTL_CHANNEL_WRITE, data ) < 0 ) - return -errno; - return 0; + snd_mixer_t *mixer; + + mixer = (snd_mixer_t *) handle; + if (!mixer) + return -EINVAL; + data->channel = channel; + if (ioctl(mixer->fd, SND_MIXER_IOCTL_CHANNEL_WRITE, data) < 0) + return -errno; + return 0; } -int snd_mixer_switches( void *handle ) +int snd_mixer_switches(void *handle) { - snd_mixer_t *mixer; - int result; - - mixer = (snd_mixer_t *)handle; - if ( !mixer ) return -EINVAL; - if ( ioctl( mixer -> fd, SND_MIXER_IOCTL_SWITCHES, &result ) < 0 ) - return -errno; - return result; + snd_mixer_t *mixer; + int result; + + mixer = (snd_mixer_t *) handle; + if (!mixer) + return -EINVAL; + if (ioctl(mixer->fd, SND_MIXER_IOCTL_SWITCHES, &result) < 0) + return -errno; + return result; } -int snd_mixer_switch( void *handle, const char *switch_id ) +int snd_mixer_switch(void *handle, const char *switch_id) { - snd_mixer_t *mixer; - snd_mixer_switch_t uswitch; - int idx, switches, err; - - mixer = (snd_mixer_t *)handle; - if ( !mixer ) return -EINVAL; - /* bellow implementation isn't optimized for speed */ - /* info about switches should be cached in the snd_mixer_t structure */ - if ( (switches = snd_mixer_switches( handle )) < 0 ) - return switches; - for ( idx = 0; idx < switches; idx++ ) { - if ( (err = snd_mixer_switch_read( handle, idx, &uswitch )) < 0 ) - return err; - if ( !strncmp( switch_id, uswitch.name, sizeof( uswitch.name ) ) ) - return idx; - } - return -EINVAL; + snd_mixer_t *mixer; + snd_mixer_switch_t uswitch; + int idx, switches, err; + + mixer = (snd_mixer_t *) handle; + if (!mixer) + return -EINVAL; + /* bellow implementation isn't optimized for speed */ + /* info about switches should be cached in the snd_mixer_t structure */ + if ((switches = snd_mixer_switches(handle)) < 0) + return switches; + for (idx = 0; idx < switches; idx++) { + if ((err = snd_mixer_switch_read(handle, idx, &uswitch)) < 0) + return err; + if (!strncmp(switch_id, uswitch.name, sizeof(uswitch.name))) + return idx; + } + return -EINVAL; } -int snd_mixer_switch_read( void *handle, int switchn, snd_mixer_switch_t *data ) +int snd_mixer_switch_read(void *handle, int switchn, snd_mixer_switch_t * data) { - snd_mixer_t *mixer; - - mixer = (snd_mixer_t *)handle; - if ( !mixer ) return -EINVAL; - data -> switchn = switchn; - if ( ioctl( mixer -> fd, SND_MIXER_IOCTL_SWITCH_READ, data ) < 0 ) - return -errno; - return 0; + snd_mixer_t *mixer; + + mixer = (snd_mixer_t *) handle; + if (!mixer) + return -EINVAL; + data->switchn = switchn; + if (ioctl(mixer->fd, SND_MIXER_IOCTL_SWITCH_READ, data) < 0) + return -errno; + return 0; } -int snd_mixer_switch_write( void *handle, int switchn, snd_mixer_switch_t *data ) +int snd_mixer_switch_write(void *handle, int switchn, snd_mixer_switch_t * data) { - snd_mixer_t *mixer; - - mixer = (snd_mixer_t *)handle; - if ( !mixer ) return -EINVAL; - data -> switchn = switchn; - if ( ioctl( mixer -> fd, SND_MIXER_IOCTL_SWITCH_WRITE, data ) < 0 ) - return -errno; - return 0; + snd_mixer_t *mixer; + + mixer = (snd_mixer_t *) handle; + if (!mixer) + return -EINVAL; + data->switchn = switchn; + if (ioctl(mixer->fd, SND_MIXER_IOCTL_SWITCH_WRITE, data) < 0) + return -errno; + return 0; } -int snd_mixer_read( void *handle, snd_mixer_callbacks_t *callbacks ) +int snd_mixer_read(void *handle, snd_mixer_callbacks_t * callbacks) { - snd_mixer_t *mixer; - int idx, result, count; - unsigned int cmd, tmp; - unsigned char buffer[ 64 ]; - - mixer = (snd_mixer_t *)handle; - if ( !mixer ) return -EINVAL; - count = 0; - while ( (result = read( mixer -> fd, &buffer, sizeof( buffer ))) > 0 ) { - if ( result & 7 ) return -EIO; - if ( !callbacks ) continue; - for ( idx = 0; idx < result; idx += 8 ) { - cmd = *(unsigned int *)&buffer[ idx ]; - tmp = *(unsigned int *)&buffer[ idx + 4 ]; - if ( cmd == 0 && callbacks -> channel_was_changed ) { - callbacks -> channel_was_changed( callbacks -> private_data, (int)tmp ); - } - if ( cmd == 1 && callbacks -> switch_was_changed ) { - callbacks -> switch_was_changed( callbacks -> private_data, (int)tmp ); - } - } - count += result >> 3; /* return only number of changes */ - } - return result >= 0 ? count : -errno; + snd_mixer_t *mixer; + int idx, result, count; + unsigned int cmd, tmp; + unsigned char buffer[64]; + + mixer = (snd_mixer_t *) handle; + if (!mixer) + return -EINVAL; + count = 0; + while ((result = read(mixer->fd, &buffer, sizeof(buffer))) > 0) { + if (result & 7) + return -EIO; + if (!callbacks) + continue; + for (idx = 0; idx < result; idx += 8) { + cmd = *(unsigned int *) &buffer[idx]; + tmp = *(unsigned int *) &buffer[idx + 4]; + if (cmd == 0 && callbacks->channel_was_changed) { + callbacks->channel_was_changed(callbacks->private_data, (int) tmp); + } + if (cmd == 1 && callbacks->switch_was_changed) { + callbacks->switch_was_changed(callbacks->private_data, (int) tmp); + } + } + count += result >> 3; /* return only number of changes */ + } + return result >= 0 ? count : -errno; } diff --git a/src/pcm/pcm.c b/src/pcm/pcm.c index a4344e4a..3a37d49a 100644 --- a/src/pcm/pcm.c +++ b/src/pcm/pcm.c @@ -30,381 +30,413 @@ #define SND_FILE_PCM "/dev/snd/pcm%i%i" #define SND_PCM_VERSION_MAX SND_PROTOCOL_VERSION( 1, 0, 1 ) - + typedef struct { - int card; - int device; - int fd; + int card; + int device; + int fd; } snd_pcm_t; - -int snd_pcm_open( void **handle, int card, int device, int mode ) + +int snd_pcm_open(void **handle, int card, int device, int mode) { - int fd, ver; - char filename[32]; - snd_pcm_t *pcm; - - *handle = NULL; - if ( card < 0 || card >= SND_CARDS ) return -EINVAL; - sprintf( filename, SND_FILE_PCM, card, device ); - if ( (fd = open( filename, mode )) < 0 ) return -errno; - if ( ioctl( fd, SND_PCM_IOCTL_PVERSION, &ver ) < 0 ) { - close( fd ); - return -errno; - } - if ( SND_PROTOCOL_UNCOMPATIBLE( ver, SND_PCM_VERSION_MAX ) ) { - close( fd ); - return -SND_ERROR_UNCOMPATIBLE_VERSION; - } - pcm = (snd_pcm_t *)calloc( 1, sizeof( snd_pcm_t ) ); - if ( pcm == NULL ) { - close( fd ); - return -ENOMEM; - } - pcm -> card = card; - pcm -> device = device; - pcm -> fd = fd; - *handle = pcm; - return 0; + int fd, ver; + char filename[32]; + snd_pcm_t *pcm; + + *handle = NULL; + if (card < 0 || card >= SND_CARDS) + return -EINVAL; + sprintf(filename, SND_FILE_PCM, card, device); + if ((fd = open(filename, mode)) < 0) + return -errno; + if (ioctl(fd, SND_PCM_IOCTL_PVERSION, &ver) < 0) { + close(fd); + return -errno; + } + if (SND_PROTOCOL_UNCOMPATIBLE(ver, SND_PCM_VERSION_MAX)) { + close(fd); + return -SND_ERROR_UNCOMPATIBLE_VERSION; + } + pcm = (snd_pcm_t *) calloc(1, sizeof(snd_pcm_t)); + if (pcm == NULL) { + close(fd); + return -ENOMEM; + } + pcm->card = card; + pcm->device = device; + pcm->fd = fd; + *handle = pcm; + return 0; } -int snd_pcm_close( void *handle ) +int snd_pcm_close(void *handle) { - snd_pcm_t *pcm; - int res; - - pcm = (snd_pcm_t *)handle; - if ( !pcm ) return -EINVAL; - res = close( pcm -> fd ) < 0 ? -errno : 0; - free( pcm ); - return res; + snd_pcm_t *pcm; + int res; + + pcm = (snd_pcm_t *) handle; + if (!pcm) + return -EINVAL; + res = close(pcm->fd) < 0 ? -errno : 0; + free(pcm); + return res; } -int snd_pcm_file_descriptor( void *handle ) +int snd_pcm_file_descriptor(void *handle) { - snd_pcm_t *pcm; - - pcm = (snd_pcm_t *)handle; - if ( !pcm ) return -EINVAL; - return pcm -> fd; + snd_pcm_t *pcm; + + pcm = (snd_pcm_t *) handle; + if (!pcm) + return -EINVAL; + return pcm->fd; } -int snd_pcm_block_mode( void *handle, int enable ) +int snd_pcm_block_mode(void *handle, int enable) { - snd_pcm_t *pcm; - long flags; - - pcm = (snd_pcm_t *)handle; - if ( !pcm ) return -EINVAL; - if ( fcntl( pcm -> fd, F_GETFL, &flags ) < 0 ) - return -errno; - if ( enable ) - flags |= O_NONBLOCK; - else - flags &= ~O_NONBLOCK; - if ( fcntl( pcm -> fd, F_SETFL, &flags ) < 0 ) - return -errno; - return 0; + snd_pcm_t *pcm; + long flags; + + pcm = (snd_pcm_t *) handle; + if (!pcm) + return -EINVAL; + if (fcntl(pcm->fd, F_GETFL, &flags) < 0) + return -errno; + if (enable) + flags |= O_NONBLOCK; + else + flags &= ~O_NONBLOCK; + if (fcntl(pcm->fd, F_SETFL, &flags) < 0) + return -errno; + return 0; } -int snd_pcm_info( void *handle, snd_pcm_info_t *info ) +int snd_pcm_info(void *handle, snd_pcm_info_t * info) { - snd_pcm_t *pcm; - - pcm = (snd_pcm_t *)handle; - if ( !pcm ) return -EINVAL; - if ( ioctl( pcm -> fd, SND_PCM_IOCTL_INFO, info ) < 0 ) - return -errno; - return 0; + snd_pcm_t *pcm; + + pcm = (snd_pcm_t *) handle; + if (!pcm) + return -EINVAL; + if (ioctl(pcm->fd, SND_PCM_IOCTL_INFO, info) < 0) + return -errno; + return 0; } -int snd_pcm_playback_info( void *handle, snd_pcm_playback_info_t *info ) +int snd_pcm_playback_info(void *handle, snd_pcm_playback_info_t * info) { - snd_pcm_t *pcm; - - pcm = (snd_pcm_t *)handle; - if ( !pcm ) return -EINVAL; - if ( ioctl( pcm -> fd, SND_PCM_IOCTL_PLAYBACK_INFO, info ) < 0 ) - return -errno; - return 0; + snd_pcm_t *pcm; + + pcm = (snd_pcm_t *) handle; + if (!pcm) + return -EINVAL; + if (ioctl(pcm->fd, SND_PCM_IOCTL_PLAYBACK_INFO, info) < 0) + return -errno; + return 0; } -int snd_pcm_record_info( void *handle, snd_pcm_record_info_t *info ) +int snd_pcm_record_info(void *handle, snd_pcm_record_info_t * info) { - snd_pcm_t *pcm; - - pcm = (snd_pcm_t *)handle; - if ( !pcm ) return -EINVAL; - if ( ioctl( pcm -> fd, SND_PCM_IOCTL_RECORD_INFO, info ) < 0 ) - return -errno; - return 0; + snd_pcm_t *pcm; + + pcm = (snd_pcm_t *) handle; + if (!pcm) + return -EINVAL; + if (ioctl(pcm->fd, SND_PCM_IOCTL_RECORD_INFO, info) < 0) + return -errno; + return 0; } -int snd_pcm_playback_switches( void *handle ) +int snd_pcm_playback_switches(void *handle) { - snd_pcm_t *pcm; - int result; - - pcm = (snd_pcm_t *)handle; - if ( !pcm ) return -EINVAL; - if ( ioctl( pcm -> fd, SND_PCM_IOCTL_PSWITCHES, &result ) < 0 ) - return -errno; - return result; + snd_pcm_t *pcm; + int result; + + pcm = (snd_pcm_t *) handle; + if (!pcm) + return -EINVAL; + if (ioctl(pcm->fd, SND_PCM_IOCTL_PSWITCHES, &result) < 0) + return -errno; + return result; } -int snd_pcm_playback_switch( void *handle, const char *switch_id ) +int snd_pcm_playback_switch(void *handle, const char *switch_id) { - snd_pcm_t *pcm; - snd_pcm_switch_t uswitch; - int idx, switches, err; - - pcm = (snd_pcm_t *)handle; - if ( !pcm ) return -EINVAL; - /* bellow implementation isn't optimized for speed */ - /* info about switches should be cached in the snd_mixer_t structure */ - if ( (switches = snd_pcm_playback_switches( handle )) < 0 ) - return switches; - for ( idx = 0; idx < switches; idx++ ) { - if ( (err = snd_pcm_playback_switch_read( handle, idx, &uswitch )) < 0 ) - return err; - if ( !strncmp( switch_id, uswitch.name, sizeof( uswitch.name ) ) ) - return idx; - } - return -EINVAL; + snd_pcm_t *pcm; + snd_pcm_switch_t uswitch; + int idx, switches, err; + + pcm = (snd_pcm_t *) handle; + if (!pcm) + return -EINVAL; + /* bellow implementation isn't optimized for speed */ + /* info about switches should be cached in the snd_mixer_t structure */ + if ((switches = snd_pcm_playback_switches(handle)) < 0) + return switches; + for (idx = 0; idx < switches; idx++) { + if ((err = snd_pcm_playback_switch_read(handle, idx, &uswitch)) < 0) + return err; + if (!strncmp(switch_id, uswitch.name, sizeof(uswitch.name))) + return idx; + } + return -EINVAL; } -int snd_pcm_playback_switch_read( void *handle, int switchn, snd_pcm_switch_t *data ) +int snd_pcm_playback_switch_read(void *handle, int switchn, snd_pcm_switch_t * data) { - snd_pcm_t *pcm; - - pcm = (snd_pcm_t *)handle; - if ( !pcm ) return -EINVAL; - data -> switchn = switchn; - if ( ioctl( pcm -> fd, SND_PCM_IOCTL_PSWITCH_READ, data ) < 0 ) - return -errno; - return 0; + snd_pcm_t *pcm; + + pcm = (snd_pcm_t *) handle; + if (!pcm) + return -EINVAL; + data->switchn = switchn; + if (ioctl(pcm->fd, SND_PCM_IOCTL_PSWITCH_READ, data) < 0) + return -errno; + return 0; } - -int snd_pcm_playback_switch_write( void *handle, int switchn, snd_pcm_switch_t *data ) -{ - snd_pcm_t *pcm; - - pcm = (snd_pcm_t *)handle; - if ( !pcm ) return -EINVAL; - data -> switchn = switchn; - if ( ioctl( pcm -> fd, SND_PCM_IOCTL_PSWITCH_WRITE, data ) < 0 ) - return -errno; - return 0; -} -int snd_pcm_record_switches( void *handle ) +int snd_pcm_playback_switch_write(void *handle, int switchn, snd_pcm_switch_t * data) { - snd_pcm_t *pcm; - int result; - - pcm = (snd_pcm_t *)handle; - if ( !pcm ) return -EINVAL; - if ( ioctl( pcm -> fd, SND_PCM_IOCTL_RSWITCHES, &result ) < 0 ) - return -errno; - return result; + snd_pcm_t *pcm; + + pcm = (snd_pcm_t *) handle; + if (!pcm) + return -EINVAL; + data->switchn = switchn; + if (ioctl(pcm->fd, SND_PCM_IOCTL_PSWITCH_WRITE, data) < 0) + return -errno; + return 0; } -int snd_pcm_record_switch( void *handle, const char *switch_id ) +int snd_pcm_record_switches(void *handle) { - snd_pcm_t *pcm; - snd_pcm_switch_t uswitch; - int idx, switches, err; - - pcm = (snd_pcm_t *)handle; - if ( !pcm ) return -EINVAL; - /* bellow implementation isn't optimized for speed */ - /* info about switches should be cached in the snd_mixer_t structure */ - if ( (switches = snd_pcm_record_switches( handle )) < 0 ) - return switches; - for ( idx = 0; idx < switches; idx++ ) { - if ( (err = snd_pcm_record_switch_read( handle, idx, &uswitch )) < 0 ) - return err; - if ( !strncmp( switch_id, uswitch.name, sizeof( uswitch.name ) ) ) - return idx; - } - return -EINVAL; + snd_pcm_t *pcm; + int result; + + pcm = (snd_pcm_t *) handle; + if (!pcm) + return -EINVAL; + if (ioctl(pcm->fd, SND_PCM_IOCTL_RSWITCHES, &result) < 0) + return -errno; + return result; } -int snd_pcm_record_switch_read( void *handle, int switchn, snd_pcm_switch_t *data ) +int snd_pcm_record_switch(void *handle, const char *switch_id) { - snd_pcm_t *pcm; - - pcm = (snd_pcm_t *)handle; - if ( !pcm ) return -EINVAL; - data -> switchn = switchn; - if ( ioctl( pcm -> fd, SND_PCM_IOCTL_RSWITCH_READ, data ) < 0 ) - return -errno; - return 0; + snd_pcm_t *pcm; + snd_pcm_switch_t uswitch; + int idx, switches, err; + + pcm = (snd_pcm_t *) handle; + if (!pcm) + return -EINVAL; + /* bellow implementation isn't optimized for speed */ + /* info about switches should be cached in the snd_mixer_t structure */ + if ((switches = snd_pcm_record_switches(handle)) < 0) + return switches; + for (idx = 0; idx < switches; idx++) { + if ((err = snd_pcm_record_switch_read(handle, idx, &uswitch)) < 0) + return err; + if (!strncmp(switch_id, uswitch.name, sizeof(uswitch.name))) + return idx; + } + return -EINVAL; } - -int snd_pcm_record_switch_write( void *handle, int switchn, snd_pcm_switch_t *data ) + +int snd_pcm_record_switch_read(void *handle, int switchn, snd_pcm_switch_t * data) { - snd_pcm_t *pcm; + snd_pcm_t *pcm; + + pcm = (snd_pcm_t *) handle; + if (!pcm) + return -EINVAL; + data->switchn = switchn; + if (ioctl(pcm->fd, SND_PCM_IOCTL_RSWITCH_READ, data) < 0) + return -errno; + return 0; +} - pcm = (snd_pcm_t *)handle; - if ( !pcm ) return -EINVAL; - data -> switchn = switchn; - if ( ioctl( pcm -> fd, SND_PCM_IOCTL_RSWITCH_WRITE, data ) < 0 ) - return -errno; - return 0; -} +int snd_pcm_record_switch_write(void *handle, int switchn, snd_pcm_switch_t * data) +{ + snd_pcm_t *pcm; + + pcm = (snd_pcm_t *) handle; + if (!pcm) + return -EINVAL; + data->switchn = switchn; + if (ioctl(pcm->fd, SND_PCM_IOCTL_RSWITCH_WRITE, data) < 0) + return -errno; + return 0; +} -int snd_pcm_playback_format( void *handle, snd_pcm_format_t *format ) +int snd_pcm_playback_format(void *handle, snd_pcm_format_t * format) { - snd_pcm_t *pcm; - - pcm = (snd_pcm_t *)handle; - if ( !pcm ) return -EINVAL; - if ( ioctl( pcm -> fd, SND_PCM_IOCTL_PLAYBACK_FORMAT, format ) < 0 ) - return -errno; - return 0; + snd_pcm_t *pcm; + + pcm = (snd_pcm_t *) handle; + if (!pcm) + return -EINVAL; + if (ioctl(pcm->fd, SND_PCM_IOCTL_PLAYBACK_FORMAT, format) < 0) + return -errno; + return 0; } -int snd_pcm_record_format( void *handle, snd_pcm_format_t *format ) +int snd_pcm_record_format(void *handle, snd_pcm_format_t * format) { - snd_pcm_t *pcm; - - pcm = (snd_pcm_t *)handle; - if ( !pcm ) return -EINVAL; - if ( ioctl( pcm -> fd, SND_PCM_IOCTL_RECORD_FORMAT, format ) < 0 ) - return -errno; - return 0; + snd_pcm_t *pcm; + + pcm = (snd_pcm_t *) handle; + if (!pcm) + return -EINVAL; + if (ioctl(pcm->fd, SND_PCM_IOCTL_RECORD_FORMAT, format) < 0) + return -errno; + return 0; } -int snd_pcm_playback_params( void *handle, snd_pcm_playback_params_t *params ) +int snd_pcm_playback_params(void *handle, snd_pcm_playback_params_t * params) { - snd_pcm_t *pcm; - - pcm = (snd_pcm_t *)handle; - if ( !pcm ) return -EINVAL; - if ( ioctl( pcm -> fd, SND_PCM_IOCTL_PLAYBACK_PARAMS, params ) < 0 ) - return -errno; - return 0; + snd_pcm_t *pcm; + + pcm = (snd_pcm_t *) handle; + if (!pcm) + return -EINVAL; + if (ioctl(pcm->fd, SND_PCM_IOCTL_PLAYBACK_PARAMS, params) < 0) + return -errno; + return 0; } -int snd_pcm_record_params( void *handle, snd_pcm_record_params_t *params ) +int snd_pcm_record_params(void *handle, snd_pcm_record_params_t * params) { - snd_pcm_t *pcm; - - pcm = (snd_pcm_t *)handle; - if ( !pcm ) return -EINVAL; - if ( ioctl( pcm -> fd, SND_PCM_IOCTL_RECORD_PARAMS, params ) < 0 ) - return -errno; - return 0; + snd_pcm_t *pcm; + + pcm = (snd_pcm_t *) handle; + if (!pcm) + return -EINVAL; + if (ioctl(pcm->fd, SND_PCM_IOCTL_RECORD_PARAMS, params) < 0) + return -errno; + return 0; } -int snd_pcm_playback_status( void *handle, snd_pcm_playback_status_t *status ) +int snd_pcm_playback_status(void *handle, snd_pcm_playback_status_t * status) { - snd_pcm_t *pcm; - - pcm = (snd_pcm_t *)handle; - if ( !pcm ) return -EINVAL; - if ( ioctl( pcm -> fd, SND_PCM_IOCTL_PLAYBACK_STATUS, status ) < 0 ) - return -errno; - return 0; + snd_pcm_t *pcm; + + pcm = (snd_pcm_t *) handle; + if (!pcm) + return -EINVAL; + if (ioctl(pcm->fd, SND_PCM_IOCTL_PLAYBACK_STATUS, status) < 0) + return -errno; + return 0; } -int snd_pcm_record_status( void *handle, snd_pcm_record_status_t *status ) +int snd_pcm_record_status(void *handle, snd_pcm_record_status_t * status) { - snd_pcm_t *pcm; - - pcm = (snd_pcm_t *)handle; - if ( !pcm ) return -EINVAL; - if ( ioctl( pcm -> fd, SND_PCM_IOCTL_RECORD_STATUS, status ) < 0 ) - return -errno; - return 0; + snd_pcm_t *pcm; + + pcm = (snd_pcm_t *) handle; + if (!pcm) + return -EINVAL; + if (ioctl(pcm->fd, SND_PCM_IOCTL_RECORD_STATUS, status) < 0) + return -errno; + return 0; } -int snd_pcm_drain_playback( void *handle ) +int snd_pcm_drain_playback(void *handle) { - snd_pcm_t *pcm; - - pcm = (snd_pcm_t *)handle; - if ( !pcm ) return -EINVAL; - if ( ioctl( pcm -> fd, SND_PCM_IOCTL_DRAIN_PLAYBACK ) < 0 ) - return -errno; - return 0; + snd_pcm_t *pcm; + + pcm = (snd_pcm_t *) handle; + if (!pcm) + return -EINVAL; + if (ioctl(pcm->fd, SND_PCM_IOCTL_DRAIN_PLAYBACK) < 0) + return -errno; + return 0; } -int snd_pcm_flush_playback( void *handle ) +int snd_pcm_flush_playback(void *handle) { - snd_pcm_t *pcm; - - pcm = (snd_pcm_t *)handle; - if ( !pcm ) return -EINVAL; - if ( ioctl( pcm -> fd, SND_PCM_IOCTL_FLUSH_PLAYBACK ) < 0 ) - return -errno; - return 0; + snd_pcm_t *pcm; + + pcm = (snd_pcm_t *) handle; + if (!pcm) + return -EINVAL; + if (ioctl(pcm->fd, SND_PCM_IOCTL_FLUSH_PLAYBACK) < 0) + return -errno; + return 0; } -int snd_pcm_flush_record( void *handle ) +int snd_pcm_flush_record(void *handle) { - snd_pcm_t *pcm; - - pcm = (snd_pcm_t *)handle; - if ( !pcm ) return -EINVAL; - if ( ioctl( pcm -> fd, SND_PCM_IOCTL_FLUSH_RECORD ) < 0 ) - return -errno; - return 0; + snd_pcm_t *pcm; + + pcm = (snd_pcm_t *) handle; + if (!pcm) + return -EINVAL; + if (ioctl(pcm->fd, SND_PCM_IOCTL_FLUSH_RECORD) < 0) + return -errno; + return 0; } -int snd_pcm_playback_pause( void *handle, int enable ) +int snd_pcm_playback_pause(void *handle, int enable) { - snd_pcm_t *pcm; - - pcm = (snd_pcm_t *)handle; - if ( !pcm ) return -EINVAL; - if ( ioctl( pcm -> fd, SND_PCM_IOCTL_PLAYBACK_PAUSE, &enable ) < 0 ) - return -errno; - return 0; + snd_pcm_t *pcm; + + pcm = (snd_pcm_t *) handle; + if (!pcm) + return -EINVAL; + if (ioctl(pcm->fd, SND_PCM_IOCTL_PLAYBACK_PAUSE, &enable) < 0) + return -errno; + return 0; } -int snd_pcm_playback_time( void *handle, int enable ) +int snd_pcm_playback_time(void *handle, int enable) { - snd_pcm_t *pcm; - - pcm = (snd_pcm_t *)handle; - if ( !pcm ) return -EINVAL; - if ( ioctl( pcm -> fd, SND_PCM_IOCTL_PLAYBACK_TIME, &enable ) < 0 ) - return -errno; - return 0; + snd_pcm_t *pcm; + + pcm = (snd_pcm_t *) handle; + if (!pcm) + return -EINVAL; + if (ioctl(pcm->fd, SND_PCM_IOCTL_PLAYBACK_TIME, &enable) < 0) + return -errno; + return 0; } -int snd_pcm_record_time( void *handle, int enable ) +int snd_pcm_record_time(void *handle, int enable) { - snd_pcm_t *pcm; - - pcm = (snd_pcm_t *)handle; - if ( !pcm ) return -EINVAL; - if ( ioctl( pcm -> fd, SND_PCM_IOCTL_RECORD_TIME, &enable ) < 0 ) - return -errno; - return 0; + snd_pcm_t *pcm; + + pcm = (snd_pcm_t *) handle; + if (!pcm) + return -EINVAL; + if (ioctl(pcm->fd, SND_PCM_IOCTL_RECORD_TIME, &enable) < 0) + return -errno; + return 0; } -ssize_t snd_pcm_write( void *handle, const void *buffer, size_t size ) +ssize_t snd_pcm_write(void *handle, const void *buffer, size_t size) { - snd_pcm_t *pcm; - ssize_t result; - - pcm = (snd_pcm_t *)handle; - if ( !pcm ) return -EINVAL; - result = write( pcm -> fd, buffer, size ); - if ( result < 0 ) return -errno; - return result; + snd_pcm_t *pcm; + ssize_t result; + + pcm = (snd_pcm_t *) handle; + if (!pcm) + return -EINVAL; + result = write(pcm->fd, buffer, size); + if (result < 0) + return -errno; + return result; } -ssize_t snd_pcm_read( void *handle, void *buffer, size_t size ) +ssize_t snd_pcm_read(void *handle, void *buffer, size_t size) { - snd_pcm_t *pcm; - ssize_t result; - - pcm = (snd_pcm_t *)handle; - if ( !pcm ) return -EINVAL; - result = read( pcm -> fd, buffer, size ); - if ( result < 0 ) return -errno; - return result; + snd_pcm_t *pcm; + ssize_t result; + + pcm = (snd_pcm_t *) handle; + if (!pcm) + return -EINVAL; + result = read(pcm->fd, buffer, size); + if (result < 0) + return -errno; + return result; } diff --git a/src/pcm/pcm_loopback.c b/src/pcm/pcm_loopback.c index d46b8274..4a285ece 100644 --- a/src/pcm/pcm_loopback.c +++ b/src/pcm/pcm_loopback.c @@ -30,114 +30,123 @@ #define SND_FILE_PCM_LB "/proc/asound/%i/pcm%i%s" #define SND_PCM_LB_VERSION_MAX SND_PROTOCOL_VERSION( 1, 0, 0 ) - + typedef struct { - int card; - int device; - int fd; + int card; + int device; + int fd; } snd_pcm_loopback_t; - -int snd_pcm_loopback_open( void **handle, int card, int device, int mode ) + +int snd_pcm_loopback_open(void **handle, int card, int device, int mode) { - int fd, ver; - char filename[32]; - snd_pcm_loopback_t *lb; - - *handle = NULL; - if ( card < 0 || card >= SND_CARDS ) return -EINVAL; - sprintf( filename, SND_FILE_PCM_LB, card, device, - mode == SND_PCM_LB_OPEN_RECORD ? "r" : "p" ); - if ( (fd = open( filename, mode )) < 0 ) return -errno; - if ( ioctl( fd, SND_PCM_IOCTL_PVERSION, &ver ) < 0 ) { - close( fd ); - return -errno; - } - if ( SND_PROTOCOL_UNCOMPATIBLE( ver, SND_PCM_LB_VERSION_MAX ) ) { - close( fd ); - return -SND_ERROR_UNCOMPATIBLE_VERSION; - } - lb = (snd_pcm_loopback_t *)calloc( 1, sizeof( snd_pcm_loopback_t ) ); - if ( lb == NULL ) { - close( fd ); - return -ENOMEM; - } - lb -> card = card; - lb -> device = device; - lb -> fd = fd; - *handle = lb; - return 0; + int fd, ver; + char filename[32]; + snd_pcm_loopback_t *lb; + + *handle = NULL; + if (card < 0 || card >= SND_CARDS) + return -EINVAL; + sprintf(filename, SND_FILE_PCM_LB, card, device, + mode == SND_PCM_LB_OPEN_RECORD ? "r" : "p"); + if ((fd = open(filename, mode)) < 0) + return -errno; + if (ioctl(fd, SND_PCM_IOCTL_PVERSION, &ver) < 0) { + close(fd); + return -errno; + } + if (SND_PROTOCOL_UNCOMPATIBLE(ver, SND_PCM_LB_VERSION_MAX)) { + close(fd); + return -SND_ERROR_UNCOMPATIBLE_VERSION; + } + lb = (snd_pcm_loopback_t *) calloc(1, sizeof(snd_pcm_loopback_t)); + if (lb == NULL) { + close(fd); + return -ENOMEM; + } + lb->card = card; + lb->device = device; + lb->fd = fd; + *handle = lb; + return 0; } -int snd_pcm_loopback_close( void *handle ) +int snd_pcm_loopback_close(void *handle) { - snd_pcm_loopback_t *lb; - int res; - - lb = (snd_pcm_loopback_t *)handle; - if ( !lb ) return -EINVAL; - res = close( lb -> fd ) < 0 ? -errno : 0; - free( lb ); - return res; + snd_pcm_loopback_t *lb; + int res; + + lb = (snd_pcm_loopback_t *) handle; + if (!lb) + return -EINVAL; + res = close(lb->fd) < 0 ? -errno : 0; + free(lb); + return res; } -int snd_pcm_loopback_file_descriptor( void *handle ) +int snd_pcm_loopback_file_descriptor(void *handle) { - snd_pcm_loopback_t *lb; - - lb = (snd_pcm_loopback_t *)handle; - if ( !lb ) return -EINVAL; - return lb -> fd; + snd_pcm_loopback_t *lb; + + lb = (snd_pcm_loopback_t *) handle; + if (!lb) + return -EINVAL; + return lb->fd; } -int snd_pcm_loopback_block_mode( void *handle, int enable ) +int snd_pcm_loopback_block_mode(void *handle, int enable) { - snd_pcm_loopback_t *lb; - long flags; - - lb = (snd_pcm_loopback_t *)handle; - if ( !lb ) return -EINVAL; - if ( fcntl( lb -> fd, F_GETFL, &flags ) < 0 ) - return -errno; - if ( enable ) - flags |= O_NONBLOCK; - else - flags &= ~O_NONBLOCK; - if ( fcntl( lb -> fd, F_SETFL, &flags ) < 0 ) - return -errno; - return 0; + snd_pcm_loopback_t *lb; + long flags; + + lb = (snd_pcm_loopback_t *) handle; + if (!lb) + return -EINVAL; + if (fcntl(lb->fd, F_GETFL, &flags) < 0) + return -errno; + if (enable) + flags |= O_NONBLOCK; + else + flags &= ~O_NONBLOCK; + if (fcntl(lb->fd, F_SETFL, &flags) < 0) + return -errno; + return 0; } -int snd_pcm_loopback_stream_mode( void *handle, int mode ) +int snd_pcm_loopback_stream_mode(void *handle, int mode) { - snd_pcm_loopback_t *lb; - long lmode = mode; - - lb = (snd_pcm_loopback_t *)handle; - if ( !lb ) return -EINVAL; - if ( ioctl( lb -> fd, SND_PCM_LB_IOCTL_STREAM_MODE, &lmode ) < 0 ) - return -errno; - return 0; + snd_pcm_loopback_t *lb; + long lmode = mode; + + lb = (snd_pcm_loopback_t *) handle; + if (!lb) + return -EINVAL; + if (ioctl(lb->fd, SND_PCM_LB_IOCTL_STREAM_MODE, &lmode) < 0) + return -errno; + return 0; } -int snd_pcm_loopback_format( void *handle, snd_pcm_format_t *format ) +int snd_pcm_loopback_format(void *handle, snd_pcm_format_t * format) { - snd_pcm_loopback_t *lb; - - lb = (snd_pcm_loopback_t *)handle; - if ( !lb ) return -EINVAL; - if ( ioctl( lb -> fd, SND_PCM_LB_IOCTL_FORMAT, format ) < 0 ) - return -errno; - return 0; + snd_pcm_loopback_t *lb; + + lb = (snd_pcm_loopback_t *) handle; + if (!lb) + return -EINVAL; + if (ioctl(lb->fd, SND_PCM_LB_IOCTL_FORMAT, format) < 0) + return -errno; + return 0; } -ssize_t snd_pcm_loopback_read( void *handle, void *buffer, size_t size ) +ssize_t snd_pcm_loopback_read(void *handle, void *buffer, size_t size) { - snd_pcm_loopback_t *lb; - ssize_t result; - - lb = (snd_pcm_loopback_t *)handle; - if ( !lb ) return -EINVAL; - result = read( lb -> fd, buffer, size ); - if ( result < 0 ) return -errno; - return result; + snd_pcm_loopback_t *lb; + ssize_t result; + + lb = (snd_pcm_loopback_t *) handle; + if (!lb) + return -EINVAL; + result = read(lb->fd, buffer, size); + if (result < 0) + return -errno; + return result; } diff --git a/src/rawmidi/rawmidi.c b/src/rawmidi/rawmidi.c index cb1b749d..2e5522be 100644 --- a/src/rawmidi/rawmidi.c +++ b/src/rawmidi/rawmidi.c @@ -30,304 +30,329 @@ #define SND_FILE_RAWMIDI "/dev/snd/midi%i%i" #define SND_PCM_VERSION_MAX SND_PROTOCOL_VERSION( 1, 0, 0 ) - + typedef struct { - int card; - int device; - int fd; + int card; + int device; + int fd; } snd_rawmidi_t; - -int snd_rawmidi_open( void **handle, int card, int device, int mode ) + +int snd_rawmidi_open(void **handle, int card, int device, int mode) { - int fd, ver; - char filename[32]; - snd_rawmidi_t *rmidi; - - *handle = NULL; - if ( card < 0 || card >= SND_CARDS ) return -EINVAL; - sprintf( filename, SND_FILE_RAWMIDI, card, device ); - if ( (fd = open( filename, mode )) < 0 ) return -errno; - if ( ioctl( fd, SND_RAWMIDI_IOCTL_PVERSION, &ver ) < 0 ) { - close( fd ); - return -errno; - } - if ( SND_PROTOCOL_UNCOMPATIBLE( ver, SND_PCM_VERSION_MAX ) ) { - close( fd ); - return -SND_ERROR_UNCOMPATIBLE_VERSION; - } - rmidi = (snd_rawmidi_t *)calloc( 1, sizeof( snd_rawmidi_t ) ); - if ( rmidi == NULL ) { - close( fd ); - return -ENOMEM; - } - rmidi -> card = card; - rmidi -> device = device; - rmidi -> fd = fd; - *handle = rmidi; - return 0; + int fd, ver; + char filename[32]; + snd_rawmidi_t *rmidi; + + *handle = NULL; + if (card < 0 || card >= SND_CARDS) + return -EINVAL; + sprintf(filename, SND_FILE_RAWMIDI, card, device); + if ((fd = open(filename, mode)) < 0) + return -errno; + if (ioctl(fd, SND_RAWMIDI_IOCTL_PVERSION, &ver) < 0) { + close(fd); + return -errno; + } + if (SND_PROTOCOL_UNCOMPATIBLE(ver, SND_PCM_VERSION_MAX)) { + close(fd); + return -SND_ERROR_UNCOMPATIBLE_VERSION; + } + rmidi = (snd_rawmidi_t *) calloc(1, sizeof(snd_rawmidi_t)); + if (rmidi == NULL) { + close(fd); + return -ENOMEM; + } + rmidi->card = card; + rmidi->device = device; + rmidi->fd = fd; + *handle = rmidi; + return 0; } -int snd_rawmidi_close( void *handle ) +int snd_rawmidi_close(void *handle) { - snd_rawmidi_t *rmidi; - int res; - - rmidi = (snd_rawmidi_t *)handle; - if ( !rmidi ) return -EINVAL; - res = close( rmidi -> fd ) < 0 ? -errno : 0; - free( rmidi ); - return res; + snd_rawmidi_t *rmidi; + int res; + + rmidi = (snd_rawmidi_t *) handle; + if (!rmidi) + return -EINVAL; + res = close(rmidi->fd) < 0 ? -errno : 0; + free(rmidi); + return res; } -int snd_rawmidi_file_descriptor( void *handle ) +int snd_rawmidi_file_descriptor(void *handle) { - snd_rawmidi_t *rmidi; - - rmidi = (snd_rawmidi_t *)handle; - if ( !rmidi ) return -EINVAL; - return rmidi -> fd; + snd_rawmidi_t *rmidi; + + rmidi = (snd_rawmidi_t *) handle; + if (!rmidi) + return -EINVAL; + return rmidi->fd; } -int snd_rawmidi_block_mode( void *handle, int enable ) +int snd_rawmidi_block_mode(void *handle, int enable) { - snd_rawmidi_t *rmidi; - long flags; - - rmidi = (snd_rawmidi_t *)handle; - if ( !rmidi ) return -EINVAL; - if ( fcntl( rmidi -> fd, F_GETFL, &flags ) < 0 ) - return -errno; - if ( enable ) - flags |= O_NONBLOCK; - else - flags &= ~O_NONBLOCK; - if ( fcntl( rmidi -> fd, F_SETFL, &flags ) < 0 ) - return -errno; - return 0; + snd_rawmidi_t *rmidi; + long flags; + + rmidi = (snd_rawmidi_t *) handle; + if (!rmidi) + return -EINVAL; + if (fcntl(rmidi->fd, F_GETFL, &flags) < 0) + return -errno; + if (enable) + flags |= O_NONBLOCK; + else + flags &= ~O_NONBLOCK; + if (fcntl(rmidi->fd, F_SETFL, &flags) < 0) + return -errno; + return 0; } -int snd_rawmidi_info( void *handle, snd_rawmidi_info_t *info ) +int snd_rawmidi_info(void *handle, snd_rawmidi_info_t * info) { - snd_rawmidi_t *rmidi; - - rmidi = (snd_rawmidi_t *)handle; - if ( !rmidi ) return -EINVAL; - if ( ioctl( rmidi -> fd, SND_RAWMIDI_IOCTL_INFO, info ) < 0 ) - return -errno; - return 0; + snd_rawmidi_t *rmidi; + + rmidi = (snd_rawmidi_t *) handle; + if (!rmidi) + return -EINVAL; + if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_INFO, info) < 0) + return -errno; + return 0; } -int snd_rawmidi_output_switches( void *handle ) +int snd_rawmidi_output_switches(void *handle) { - snd_rawmidi_t *rmidi; - int result; - - rmidi = (snd_rawmidi_t *)handle; - if ( !rmidi ) return -EINVAL; - if ( ioctl( rmidi -> fd, SND_RAWMIDI_IOCTL_OSWITCHES, &result ) < 0 ) - return -errno; - return result; + snd_rawmidi_t *rmidi; + int result; + + rmidi = (snd_rawmidi_t *) handle; + if (!rmidi) + return -EINVAL; + if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_OSWITCHES, &result) < 0) + return -errno; + return result; } -int snd_rawmidi_output_switch( void *handle, const char *switch_id ) +int snd_rawmidi_output_switch(void *handle, const char *switch_id) { - snd_rawmidi_t *rmidi; - snd_rawmidi_switch_t uswitch; - int idx, switches, err; - - rmidi = (snd_rawmidi_t *)handle; - if ( !rmidi ) return -EINVAL; - /* bellow implementation isn't optimized for speed */ - /* info about switches should be cached in the snd_mixer_t structure */ - if ( (switches = snd_rawmidi_output_switches( handle )) < 0 ) - return switches; - for ( idx = 0; idx < switches; idx++ ) { - if ( (err = snd_rawmidi_output_switch_read( handle, idx, &uswitch )) < 0 ) - return err; - if ( !strncmp( switch_id, uswitch.name, sizeof( uswitch.name ) ) ) - return idx; - } - return -EINVAL; + snd_rawmidi_t *rmidi; + snd_rawmidi_switch_t uswitch; + int idx, switches, err; + + rmidi = (snd_rawmidi_t *) handle; + if (!rmidi) + return -EINVAL; + /* bellow implementation isn't optimized for speed */ + /* info about switches should be cached in the snd_mixer_t structure */ + if ((switches = snd_rawmidi_output_switches(handle)) < 0) + return switches; + for (idx = 0; idx < switches; idx++) { + if ((err = snd_rawmidi_output_switch_read(handle, idx, &uswitch)) < 0) + return err; + if (!strncmp(switch_id, uswitch.name, sizeof(uswitch.name))) + return idx; + } + return -EINVAL; } -int snd_rawmidi_output_switch_read( void *handle, int switchn, snd_rawmidi_switch_t *data ) +int snd_rawmidi_output_switch_read(void *handle, int switchn, snd_rawmidi_switch_t * data) { - snd_rawmidi_t *rmidi; - - rmidi = (snd_rawmidi_t *)handle; - if ( !rmidi ) return -EINVAL; - data -> switchn = switchn; - if ( ioctl( rmidi -> fd, SND_RAWMIDI_IOCTL_OSWITCH_READ, data ) < 0 ) - return -errno; - return 0; + snd_rawmidi_t *rmidi; + + rmidi = (snd_rawmidi_t *) handle; + if (!rmidi) + return -EINVAL; + data->switchn = switchn; + if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_OSWITCH_READ, data) < 0) + return -errno; + return 0; } - -int snd_rawmidi_output_switch_write( void *handle, int switchn, snd_rawmidi_switch_t *data ) + +int snd_rawmidi_output_switch_write(void *handle, int switchn, snd_rawmidi_switch_t * data) { - snd_rawmidi_t *rmidi; + snd_rawmidi_t *rmidi; - rmidi = (snd_rawmidi_t *)handle; - if ( !rmidi ) return -EINVAL; - data -> switchn = switchn; - if ( ioctl( rmidi -> fd, SND_RAWMIDI_IOCTL_OSWITCH_WRITE, data ) < 0 ) - return -errno; - return 0; -} + rmidi = (snd_rawmidi_t *) handle; + if (!rmidi) + return -EINVAL; + data->switchn = switchn; + if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_OSWITCH_WRITE, data) < 0) + return -errno; + return 0; +} -int snd_rawmidi_input_switches( void *handle ) +int snd_rawmidi_input_switches(void *handle) { - snd_rawmidi_t *rmidi; - int result; - - rmidi = (snd_rawmidi_t *)handle; - if ( !rmidi ) return -EINVAL; - if ( ioctl( rmidi -> fd, SND_RAWMIDI_IOCTL_ISWITCHES, &result ) < 0 ) - return -errno; - return result; + snd_rawmidi_t *rmidi; + int result; + + rmidi = (snd_rawmidi_t *) handle; + if (!rmidi) + return -EINVAL; + if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_ISWITCHES, &result) < 0) + return -errno; + return result; } -int snd_rawmidi_input_switch( void *handle, const char *switch_id ) +int snd_rawmidi_input_switch(void *handle, const char *switch_id) { - snd_rawmidi_t *rmidi; - snd_rawmidi_switch_t uswitch; - int idx, switches, err; - - rmidi = (snd_rawmidi_t *)handle; - if ( !rmidi ) return -EINVAL; - /* bellow implementation isn't optimized for speed */ - /* info about switches should be cached in the snd_mixer_t structure */ - if ( (switches = snd_rawmidi_input_switches( handle )) < 0 ) - return switches; - for ( idx = 0; idx < switches; idx++ ) { - if ( (err = snd_rawmidi_input_switch_read( handle, idx, &uswitch )) < 0 ) - return err; - if ( !strncmp( switch_id, uswitch.name, sizeof( uswitch.name ) ) ) - return idx; - } - return -EINVAL; + snd_rawmidi_t *rmidi; + snd_rawmidi_switch_t uswitch; + int idx, switches, err; + + rmidi = (snd_rawmidi_t *) handle; + if (!rmidi) + return -EINVAL; + /* bellow implementation isn't optimized for speed */ + /* info about switches should be cached in the snd_mixer_t structure */ + if ((switches = snd_rawmidi_input_switches(handle)) < 0) + return switches; + for (idx = 0; idx < switches; idx++) { + if ((err = snd_rawmidi_input_switch_read(handle, idx, &uswitch)) < 0) + return err; + if (!strncmp(switch_id, uswitch.name, sizeof(uswitch.name))) + return idx; + } + return -EINVAL; } -int snd_rawmidi_input_switch_read( void *handle, int switchn, snd_rawmidi_switch_t *data ) +int snd_rawmidi_input_switch_read(void *handle, int switchn, snd_rawmidi_switch_t * data) { - snd_rawmidi_t *rmidi; - - rmidi = (snd_rawmidi_t *)handle; - if ( !rmidi ) return -EINVAL; - data -> switchn = switchn; - if ( ioctl( rmidi -> fd, SND_RAWMIDI_IOCTL_ISWITCH_READ, data ) < 0 ) - return -errno; - return 0; + snd_rawmidi_t *rmidi; + + rmidi = (snd_rawmidi_t *) handle; + if (!rmidi) + return -EINVAL; + data->switchn = switchn; + if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_ISWITCH_READ, data) < 0) + return -errno; + return 0; } - -int snd_rawmidi_input_switch_write( void *handle, int switchn, snd_rawmidi_switch_t *data ) + +int snd_rawmidi_input_switch_write(void *handle, int switchn, snd_rawmidi_switch_t * data) { - snd_rawmidi_t *rmidi; + snd_rawmidi_t *rmidi; - rmidi = (snd_rawmidi_t *)handle; - if ( !rmidi ) return -EINVAL; - data -> switchn = switchn; - if ( ioctl( rmidi -> fd, SND_RAWMIDI_IOCTL_ISWITCH_WRITE, data ) < 0 ) - return -errno; - return 0; -} + rmidi = (snd_rawmidi_t *) handle; + if (!rmidi) + return -EINVAL; + data->switchn = switchn; + if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_ISWITCH_WRITE, data) < 0) + return -errno; + return 0; +} -int snd_rawmidi_output_params( void *handle, snd_rawmidi_output_params_t *params ) +int snd_rawmidi_output_params(void *handle, snd_rawmidi_output_params_t * params) { - snd_rawmidi_t *rmidi; - - rmidi = (snd_rawmidi_t *)handle; - if ( !rmidi ) return -EINVAL; - if ( ioctl( rmidi -> fd, SND_RAWMIDI_IOCTL_OUTPUT_PARAMS, params ) < 0 ) - return -errno; - return 0; + snd_rawmidi_t *rmidi; + + rmidi = (snd_rawmidi_t *) handle; + if (!rmidi) + return -EINVAL; + if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_OUTPUT_PARAMS, params) < 0) + return -errno; + return 0; } -int snd_rawmidi_input_params( void *handle, snd_rawmidi_input_params_t *params ) +int snd_rawmidi_input_params(void *handle, snd_rawmidi_input_params_t * params) { - snd_rawmidi_t *rmidi; - - rmidi = (snd_rawmidi_t *)handle; - if ( !rmidi ) return -EINVAL; - if ( ioctl( rmidi -> fd, SND_RAWMIDI_IOCTL_INPUT_PARAMS, params ) < 0 ) - return -errno; - return 0; + snd_rawmidi_t *rmidi; + + rmidi = (snd_rawmidi_t *) handle; + if (!rmidi) + return -EINVAL; + if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_INPUT_PARAMS, params) < 0) + return -errno; + return 0; } -int snd_rawmidi_output_status( void *handle, snd_rawmidi_output_status_t *status ) +int snd_rawmidi_output_status(void *handle, snd_rawmidi_output_status_t * status) { - snd_rawmidi_t *rmidi; - - rmidi = (snd_rawmidi_t *)handle; - if ( !rmidi ) return -EINVAL; - if ( ioctl( rmidi -> fd, SND_RAWMIDI_IOCTL_OUTPUT_STATUS, status ) < 0 ) - return -errno; - return 0; + snd_rawmidi_t *rmidi; + + rmidi = (snd_rawmidi_t *) handle; + if (!rmidi) + return -EINVAL; + if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_OUTPUT_STATUS, status) < 0) + return -errno; + return 0; } -int snd_rawmidi_input_status( void *handle, snd_rawmidi_input_status_t *status ) +int snd_rawmidi_input_status(void *handle, snd_rawmidi_input_status_t * status) { - snd_rawmidi_t *rmidi; - - rmidi = (snd_rawmidi_t *)handle; - if ( !rmidi ) return -EINVAL; - if ( ioctl( rmidi -> fd, SND_RAWMIDI_IOCTL_INPUT_STATUS, status ) < 0 ) - return -errno; - return 0; + snd_rawmidi_t *rmidi; + + rmidi = (snd_rawmidi_t *) handle; + if (!rmidi) + return -EINVAL; + if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_INPUT_STATUS, status) < 0) + return -errno; + return 0; } -int snd_rawmidi_drain_output( void *handle ) +int snd_rawmidi_drain_output(void *handle) { - snd_rawmidi_t *rmidi; - - rmidi = (snd_rawmidi_t *)handle; - if ( !rmidi ) return -EINVAL; - if ( ioctl( rmidi -> fd, SND_RAWMIDI_IOCTL_DRAIN_OUTPUT ) < 0 ) - return -errno; - return 0; + snd_rawmidi_t *rmidi; + + rmidi = (snd_rawmidi_t *) handle; + if (!rmidi) + return -EINVAL; + if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_DRAIN_OUTPUT) < 0) + return -errno; + return 0; } -int snd_rawmidi_flush_output( void *handle ) +int snd_rawmidi_flush_output(void *handle) { - snd_rawmidi_t *rmidi; - - rmidi = (snd_rawmidi_t *)handle; - if ( !rmidi ) return -EINVAL; - if ( ioctl( rmidi -> fd, SND_RAWMIDI_IOCTL_FLUSH_OUTPUT ) < 0 ) - return -errno; - return 0; + snd_rawmidi_t *rmidi; + + rmidi = (snd_rawmidi_t *) handle; + if (!rmidi) + return -EINVAL; + if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_FLUSH_OUTPUT) < 0) + return -errno; + return 0; } -int snd_rawmidi_flush_input( void *handle ) +int snd_rawmidi_flush_input(void *handle) { - snd_rawmidi_t *rmidi; - - rmidi = (snd_rawmidi_t *)handle; - if ( !rmidi ) return -EINVAL; - if ( ioctl( rmidi -> fd, SND_RAWMIDI_IOCTL_FLUSH_INPUT ) < 0 ) - return -errno; - return 0; + snd_rawmidi_t *rmidi; + + rmidi = (snd_rawmidi_t *) handle; + if (!rmidi) + return -EINVAL; + if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_FLUSH_INPUT) < 0) + return -errno; + return 0; } -ssize_t snd_rawmidi_write( void *handle, const void *buffer, size_t size ) +ssize_t snd_rawmidi_write(void *handle, const void *buffer, size_t size) { - snd_rawmidi_t *rmidi; - ssize_t result; - - rmidi = (snd_rawmidi_t *)handle; - if ( !rmidi ) return -EINVAL; - result = write( rmidi -> fd, buffer, size ); - if ( result < 0 ) return -errno; - return result; + snd_rawmidi_t *rmidi; + ssize_t result; + + rmidi = (snd_rawmidi_t *) handle; + if (!rmidi) + return -EINVAL; + result = write(rmidi->fd, buffer, size); + if (result < 0) + return -errno; + return result; } -ssize_t snd_rawmidi_read( void *handle, void *buffer, size_t size ) +ssize_t snd_rawmidi_read(void *handle, void *buffer, size_t size) { - snd_rawmidi_t *rmidi; - ssize_t result; - - rmidi = (snd_rawmidi_t *)handle; - if ( !rmidi ) return -EINVAL; - result = read( rmidi -> fd, buffer, size ); - if ( result < 0 ) return -errno; - return result; + snd_rawmidi_t *rmidi; + ssize_t result; + + rmidi = (snd_rawmidi_t *) handle; + if (!rmidi) + return -EINVAL; + result = read(rmidi->fd, buffer, size); + if (result < 0) + return -errno; + return result; } -- 2.47.1