static void selem_free(snd_mixer_elem_t *elem)
{
selem_none_t *simple = snd_mixer_elem_get_private(elem);
assert(snd_mixer_elem_get_type(elem) == SND_MIXER_ELEM_SIMPLE);
if (simple->selem.id)
snd_mixer_selem_id_free(simple->selem.id);
/* free db range information */
free(simple->str[0].db_info);
free(simple->str[1].db_info);
free(simple);
}
static int simple_update(snd_mixer_elem_t *melem)
{
selem_none_t *simple;
unsigned int caps, pchannels, cchannels;
long pmin, pmax, cmin, cmax;
selem_ctl_t *ctl;
const char *name;
caps = 0;
pchannels = 0;
pmin = LONG_MAX;
pmax = LONG_MIN;
cchannels = 0;
cmin = LONG_MAX;
cmax = LONG_MIN;
assert(snd_mixer_elem_get_type(melem) == SND_MIXER_ELEM_SIMPLE);
simple = snd_mixer_elem_get_private(melem);
name = snd_mixer_selem_get_name(melem);
ctl = &simple->ctls[CTL_SINGLE];
if (ctl->elem) {
pchannels = cchannels = ctl->values;
if (ctl->type == SND_CTL_ELEM_TYPE_INTEGER) {
caps |= SM_CAP_GVOLUME;
pmin = cmin = ctl->min;
pmax = cmax = ctl->max;
} else
caps |= SM_CAP_GSWITCH;
}
ctl = &simple->ctls[CTL_GLOBAL_SWITCH];
if (ctl->elem) {
if (pchannels < ctl->values)
pchannels = ctl->values;
if (cchannels < ctl->values)
cchannels = ctl->values;
caps |= SM_CAP_GSWITCH;
}
ctl = &simple->ctls[CTL_GLOBAL_ROUTE];
if (ctl->elem) {
if (pchannels < ctl->values)
pchannels = ctl->values;
if (cchannels < ctl->values)
cchannels = ctl->values;
caps |= SM_CAP_GSWITCH;
}
ctl = &simple->ctls[CTL_GLOBAL_VOLUME];
if (ctl->elem) {
if (pchannels < ctl->values)
pchannels = ctl->values;
if (pmin > ctl->min)
pmin = ctl->min;
if (pmax < ctl->max)
pmax = ctl->max;
if (cchannels < ctl->values)
cchannels = ctl->values;
if (cmin > ctl->min)
cmin = ctl->min;
if (cmax < ctl->max)
cmax = ctl->max;
caps |= SM_CAP_GVOLUME;
}
ctl = &simple->ctls[CTL_PLAYBACK_SWITCH];
if (ctl->elem) {
if (pchannels < ctl->values)
pchannels = ctl->values;
caps |= SM_CAP_PSWITCH;
caps &= ~SM_CAP_GSWITCH;
}
ctl = &simple->ctls[CTL_PLAYBACK_ROUTE];
if (ctl->elem) {
if (pchannels < ctl->values)
pchannels = ctl->values;
caps |= SM_CAP_PSWITCH;
caps &= ~SM_CAP_GSWITCH;
}
ctl = &simple->ctls[CTL_CAPTURE_SWITCH];
if (ctl->elem) {
if (cchannels < ctl->values)
cchannels = ctl->values;
caps |= SM_CAP_CSWITCH;
caps &= ~SM_CAP_GSWITCH;
}
ctl = &simple->ctls[CTL_CAPTURE_ROUTE];
if (ctl->elem) {
if (cchannels < ctl->values)
cchannels = ctl->values;
caps |= SM_CAP_CSWITCH;
caps &= ~SM_CAP_GSWITCH;
}
ctl = &simple->ctls[CTL_PLAYBACK_VOLUME];
if (ctl->elem) {
if (pchannels < ctl->values)
pchannels = ctl->values;
if (pmin > ctl->min)
pmin = ctl->min;
if (pmax < ctl->max)
pmax = ctl->max;
caps |= SM_CAP_PVOLUME;
caps &= ~SM_CAP_GVOLUME;
}
ctl = &simple->ctls[CTL_CAPTURE_VOLUME];
if (ctl->elem) {
if (cchannels < ctl->values)
cchannels = ctl->values;
if (cmin > ctl->min)
cmin = ctl->min;
if (cmax < ctl->max)
cmax = ctl->max;
caps |= SM_CAP_CVOLUME;
caps &= ~SM_CAP_GVOLUME;
}
ctl = &simple->ctls[CTL_CAPTURE_SOURCE];
if (ctl->elem) {
if (cchannels < ctl->values)
cchannels = ctl->values;
caps |= SM_CAP_CSWITCH | SM_CAP_CSWITCH_EXCL;
caps &= ~SM_CAP_GSWITCH;
}
ctl = &simple->ctls[CTL_GLOBAL_ENUM];
if (ctl->elem) {
if (pchannels < ctl->values)
pchannels = ctl->values;
caps |= SM_CAP_PENUM | SM_CAP_CENUM;
}
ctl = &simple->ctls[CTL_PLAYBACK_ENUM];
if (ctl->elem) {
if (pchannels < ctl->values)
pchannels = ctl->values;
caps |= SM_CAP_PENUM;
}
ctl = &simple->ctls[CTL_CAPTURE_ENUM];
if (ctl->elem) {
if (pchannels < ctl->values)
pchannels = ctl->values;
caps |= SM_CAP_CENUM;
}
if (pchannels > 32)
pchannels = 32;
if (cchannels > 32)
cchannels = 32;
if (caps & (SM_CAP_GSWITCH|SM_CAP_PSWITCH))
caps |= SM_CAP_PSWITCH_JOIN;
if (caps & (SM_CAP_GVOLUME|SM_CAP_PVOLUME))
caps |= SM_CAP_PVOLUME_JOIN;
if (caps & (SM_CAP_GSWITCH|SM_CAP_CSWITCH))
caps |= SM_CAP_CSWITCH_JOIN;
if (caps & (SM_CAP_GVOLUME|SM_CAP_CVOLUME))
caps |= SM_CAP_CVOLUME_JOIN;
if (pchannels > 1 || cchannels > 1) {
if (simple->ctls[CTL_SINGLE].elem &&
simple->ctls[CTL_SINGLE].values > 1) {
if (caps & SM_CAP_GSWITCH)
caps &= ~(SM_CAP_PSWITCH_JOIN|SM_CAP_CSWITCH_JOIN);
else
caps &= ~(SM_CAP_PVOLUME_JOIN|SM_CAP_CVOLUME_JOIN);
}
if (simple->ctls[CTL_GLOBAL_ROUTE].elem ||
(simple->ctls[CTL_GLOBAL_SWITCH].elem &&
simple->ctls[CTL_GLOBAL_SWITCH].values > 1)) {
caps &= ~(SM_CAP_PSWITCH_JOIN|SM_CAP_CSWITCH_JOIN);
}
if (simple->ctls[CTL_GLOBAL_VOLUME].elem &&
simple->ctls[CTL_GLOBAL_VOLUME].values > 1) {
caps &= ~(SM_CAP_PVOLUME_JOIN|SM_CAP_CVOLUME_JOIN);
}
}
if (pchannels > 1) {
if (simple->ctls[CTL_PLAYBACK_ROUTE].elem ||
(simple->ctls[CTL_PLAYBACK_SWITCH].elem &&
simple->ctls[CTL_PLAYBACK_SWITCH].values > 1)) {
caps &= ~SM_CAP_PSWITCH_JOIN;
}
if (simple->ctls[CTL_PLAYBACK_VOLUME].elem &&
simple->ctls[CTL_PLAYBACK_VOLUME].values > 1) {
caps &= ~SM_CAP_PVOLUME_JOIN;
}
}
if (cchannels > 1) {
if (simple->ctls[CTL_CAPTURE_ROUTE].elem ||
(simple->ctls[CTL_CAPTURE_SWITCH].elem &&
simple->ctls[CTL_CAPTURE_SWITCH].values > 1) ||
(simple->ctls[CTL_CAPTURE_SOURCE].elem &&
simple->ctls[CTL_CAPTURE_SOURCE].values > 1)) {
caps &= ~SM_CAP_CSWITCH_JOIN;
}
if (simple->ctls[CTL_CAPTURE_VOLUME].elem &&
simple->ctls[CTL_CAPTURE_VOLUME].values > 1) {
caps &= ~SM_CAP_CVOLUME_JOIN;
}
}
/* exceptions */
if ((caps & (SM_CAP_GSWITCH|SM_CAP_PSWITCH|SM_CAP_CSWITCH)) &&
(caps & (SM_CAP_GSWITCH|SM_CAP_PSWITCH|SM_CAP_CSWITCH)) == (caps & SM_CAP_GSWITCH)) {
caps &= ~(SM_CAP_GSWITCH|SM_CAP_CSWITCH_JOIN|SM_CAP_CSWITCH_EXCL);
caps |= SM_CAP_PSWITCH;
}
if ((caps & SM_CAP_GSWITCH) &&
(caps & (SM_CAP_PSWITCH|SM_CAP_CSWITCH)) == 0)
caps |= SM_CAP_PSWITCH|SM_CAP_CSWITCH;
if ((caps & SM_CAP_GVOLUME) &&
(caps & (SM_CAP_PVOLUME|SM_CAP_CVOLUME)) == 0)
caps |= SM_CAP_PVOLUME|SM_CAP_CVOLUME;
simple->selem.caps = caps;
simple->str[SM_PLAY].channels = pchannels;
if (!simple->str[SM_PLAY].range) {
simple->str[SM_PLAY].min = pmin != LONG_MAX ? pmin : 0;
simple->str[SM_PLAY].max = pmax != LONG_MIN ? pmax : 0;
}
simple->str[SM_CAPT].channels = cchannels;
if (!simple->str[SM_CAPT].range) {
simple->str[SM_CAPT].min = cmin != LONG_MAX ? cmin : 0;
simple->str[SM_CAPT].max = cmax != LONG_MIN ? cmax : 0;
}
return 0;
}
static int selem_write_main(snd_mixer_elem_t *elem)
{
selem_none_t *s;
unsigned int idx;
int err;
assert(snd_mixer_elem_get_type(elem) == SND_MIXER_ELEM_SIMPLE);
s = snd_mixer_elem_get_private(elem);
if (s->ctls[CTL_GLOBAL_ENUM].elem)
return elem_write_enum(s);
if (s->ctls[CTL_PLAYBACK_ENUM].elem)
return elem_write_enum(s);
if (s->ctls[CTL_CAPTURE_ENUM].elem)
return elem_write_enum(s);
if (s->ctls[CTL_SINGLE].elem) {
if (s->ctls[CTL_SINGLE].type == SND_CTL_ELEM_TYPE_INTEGER)
err = elem_write_volume(s, SM_PLAY, CTL_SINGLE);
else
err = elem_write_switch(s, SM_PLAY, CTL_SINGLE);
if (err < 0)
return err;
}
if (s->ctls[CTL_GLOBAL_VOLUME].elem) {
err = elem_write_volume(s, SM_PLAY, CTL_GLOBAL_VOLUME);
if (err < 0)
return err;
}
if (s->ctls[CTL_GLOBAL_SWITCH].elem) {
if (s->ctls[CTL_PLAYBACK_SWITCH].elem && s->ctls[CTL_CAPTURE_SWITCH].elem)
err = elem_write_switch_constant(s, CTL_GLOBAL_SWITCH, 1);
else
err = elem_write_switch(s, SM_PLAY, CTL_GLOBAL_SWITCH);
if (err < 0)
return err;
}
if (s->ctls[CTL_PLAYBACK_VOLUME].elem) {
err = elem_write_volume(s, SM_PLAY, CTL_PLAYBACK_VOLUME);
if (err < 0)
return err;
}
if (s->ctls[CTL_PLAYBACK_SWITCH].elem) {
err = elem_write_switch(s, SM_PLAY, CTL_PLAYBACK_SWITCH);
if (err < 0)
return err;
}
if (s->ctls[CTL_PLAYBACK_ROUTE].elem) {
err = elem_write_route(s, SM_PLAY, CTL_PLAYBACK_ROUTE);
if (err < 0)
return err;
}
if (s->ctls[CTL_CAPTURE_VOLUME].elem) {
err = elem_write_volume(s, SM_CAPT, CTL_CAPTURE_VOLUME);
if (err < 0)
return err;
}
if (s->ctls[CTL_CAPTURE_SWITCH].elem) {
err = elem_write_switch(s, SM_CAPT, CTL_CAPTURE_SWITCH);
if (err < 0)
return err;
}
if (s->ctls[CTL_CAPTURE_ROUTE].elem) {
err = elem_write_route(s, SM_CAPT, CTL_CAPTURE_ROUTE);
if (err < 0)
return err;
}
if (s->ctls[CTL_CAPTURE_SOURCE].elem) {
snd_ctl_elem_value_t *ctl;
selem_ctl_t *c = &s->ctls[CTL_CAPTURE_SOURCE];
snd_ctl_elem_value_alloca(&ctl);
if ((err = snd_hctl_elem_read(c->elem, ctl)) < 0)
return err;
for (idx = 0; idx < c->values; idx++) {
if (s->str[SM_CAPT].sw & (1 << idx))
snd_ctl_elem_value_set_enumerated(ctl, idx, s->capture_item);
}
if ((err = snd_hctl_elem_write(c->elem, ctl)) < 0)
return err;
/* update the element, don't remove */
err = selem_read(elem);
if (err < 0)
return err;
}
return 0;
}
static int selem_read(snd_mixer_elem_t *elem)
{
selem_none_t *s;
unsigned int idx;
int err = 0;
long pvol[32], cvol[32];
unsigned int psw, csw;
assert(snd_mixer_elem_get_type(elem) == SND_MIXER_ELEM_SIMPLE);
s = snd_mixer_elem_get_private(elem);
memcpy(pvol, s->str[SM_PLAY].vol, sizeof(pvol));
memset(&s->str[SM_PLAY].vol, 0, sizeof(s->str[SM_PLAY].vol));
psw = s->str[SM_PLAY].sw;
s->str[SM_PLAY].sw = ~0U;
memcpy(cvol, s->str[SM_CAPT].vol, sizeof(cvol));
memset(&s->str[SM_CAPT].vol, 0, sizeof(s->str[SM_CAPT].vol));
csw = s->str[SM_CAPT].sw;
s->str[SM_CAPT].sw = ~0U;
if (s->ctls[CTL_GLOBAL_ENUM].elem) {
err = elem_read_enum(s);
if (err < 0)
return err;
goto __skip_cswitch;
}
if (s->ctls[CTL_CAPTURE_ENUM].elem) {
err = elem_read_enum(s);
if (err < 0)
return err;
goto __skip_cswitch;
}
if (s->ctls[CTL_PLAYBACK_ENUM].elem) {
err = elem_read_enum(s);
if (err < 0)
return err;
goto __skip_cswitch;
}
if (s->ctls[CTL_PLAYBACK_VOLUME].elem)
err = elem_read_volume(s, SM_PLAY, CTL_PLAYBACK_VOLUME);
else if (s->ctls[CTL_GLOBAL_VOLUME].elem)
err = elem_read_volume(s, SM_PLAY, CTL_GLOBAL_VOLUME);
else if (s->ctls[CTL_SINGLE].elem &&
s->ctls[CTL_SINGLE].type == SND_CTL_ELEM_TYPE_INTEGER)
err = elem_read_volume(s, SM_PLAY, CTL_SINGLE);
if (err < 0)
return err;
if ((s->selem.caps & (SM_CAP_GSWITCH|SM_CAP_PSWITCH)) == 0) {
s->str[SM_PLAY].sw = 0;
goto __skip_pswitch;
}
if (s->ctls[CTL_PLAYBACK_SWITCH].elem) {
err = elem_read_switch(s, SM_PLAY, CTL_PLAYBACK_SWITCH);
if (err < 0)
return err;
}
if (s->ctls[CTL_GLOBAL_SWITCH].elem) {
err = elem_read_switch(s, SM_PLAY, CTL_GLOBAL_SWITCH);
if (err < 0)
return err;
}
if (s->ctls[CTL_SINGLE].elem &&
s->ctls[CTL_SINGLE].type == SND_CTL_ELEM_TYPE_BOOLEAN) {
err = elem_read_switch(s, SM_PLAY, CTL_SINGLE);
if (err < 0)
return err;
}
if (s->ctls[CTL_PLAYBACK_ROUTE].elem) {
err = elem_read_route(s, SM_PLAY, CTL_PLAYBACK_ROUTE);
if (err < 0)
return err;
}
if (s->ctls[CTL_GLOBAL_ROUTE].elem) {
err = elem_read_route(s, SM_PLAY, CTL_GLOBAL_ROUTE);
if (err < 0)
return err;
}
__skip_pswitch:
if (s->ctls[CTL_CAPTURE_VOLUME].elem)
err = elem_read_volume(s, SM_CAPT, CTL_CAPTURE_VOLUME);
else if (s->ctls[CTL_GLOBAL_VOLUME].elem)
err = elem_read_volume(s, SM_CAPT, CTL_GLOBAL_VOLUME);
else if (s->ctls[CTL_SINGLE].elem &&
s->ctls[CTL_SINGLE].type == SND_CTL_ELEM_TYPE_INTEGER)
err = elem_read_volume(s, SM_CAPT, CTL_SINGLE);
if (err < 0)
return err;
if ((s->selem.caps & (SM_CAP_GSWITCH|SM_CAP_CSWITCH)) == 0) {
s->str[SM_CAPT].sw = 0;
goto __skip_cswitch;
}
if (s->ctls[CTL_CAPTURE_SWITCH].elem) {
err = elem_read_switch(s, SM_CAPT, CTL_CAPTURE_SWITCH);
if (err < 0)
return err;
}
if (s->ctls[CTL_GLOBAL_SWITCH].elem) {
err = elem_read_switch(s, SM_CAPT, CTL_GLOBAL_SWITCH);
if (err < 0)
return err;
}
if (s->ctls[CTL_SINGLE].elem &&
s->ctls[CTL_SINGLE].type == SND_CTL_ELEM_TYPE_BOOLEAN) {
err = elem_read_switch(s, SM_CAPT, CTL_SINGLE);
if (err < 0)
return err;
}
if (s->ctls[CTL_CAPTURE_ROUTE].elem) {
err = elem_read_route(s, SM_CAPT, CTL_CAPTURE_ROUTE);
if (err < 0)
return err;
}
if (s->ctls[CTL_GLOBAL_ROUTE].elem) {
err = elem_read_route(s, SM_CAPT, CTL_GLOBAL_ROUTE);
if (err < 0)
return err;
}
if (s->ctls[CTL_CAPTURE_SOURCE].elem) {
snd_ctl_elem_value_t *ctl;
selem_ctl_t *c = &s->ctls[CTL_CAPTURE_SOURCE];
snd_ctl_elem_value_alloca(&ctl);
err = snd_hctl_elem_read(c->elem, ctl);
if (err < 0)
return err;
for (idx = 0; idx < s->str[SM_CAPT].channels; idx++) {
unsigned int idx1 = idx;
if (idx >= c->values)
idx1 = 0;
if (snd_ctl_elem_value_get_enumerated(ctl, idx1) != s->capture_item)
s->str[SM_CAPT].sw &= ~(1 << idx);
}
}
__skip_cswitch:
if (memcmp(pvol, s->str[SM_PLAY].vol, sizeof(pvol)) ||
psw != s->str[SM_PLAY].sw ||
memcmp(cvol, s->str[SM_CAPT].vol, sizeof(cvol)) ||
csw != s->str[SM_CAPT].sw)
return 1;
return 0;
}
int play_sound(char* filename,int rate,int bits,int channel,int order)
{
long loops;
int rc,size,dir;
snd_pcm_t *handle;
snd_pcm_hw_params_t *params;
snd_pcm_uframes_t frames,periodsize;
snd_mixer_t *mixer;
snd_mixer_elem_t *pcm_element;
char *buffer;
unsigned int val;
FILE *fp = fopen(filename,"rb");
rc = snd_pcm_open(&handle,"default",SND_PCM_STREAM_PLAYBACK,0);
snd_pcm_hw_params_alloca(¶ms);
snd_pcm_hw_params_any(handle,params);
snd_pcm_hw_params_set_access(handle,params,SND_PCM_ACCESS_RW_INTERLEAVED);
switch(order){
case 1:
snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_S16_LE);
break;
case 2:
snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_S16_BE);
break;
defualt:
break;
}
snd_pcm_hw_params_set_channels(handle,params,channel);
val = rate;
snd_pcm_hw_params_set_rate_near(handle,params,&val,0);
snd_pcm_hw_params_get_buffer_size_max(params,&frames);
frames = frames < ALSA_MAX_BUF_SIZE? frames:ALSA_MAX_BUF_SIZE;
rc = snd_pcm_hw_params_set_buffer_size_near(handle,params,&frames);
snd_pcm_hw_params_get_period_size_min(params,&periodsize,NULL);
if(!periodsize){
periodsize=size/4;
}
rc = snd_pcm_hw_params_set_period_size_near(handle,params,&periodsize,NULL);
rc = snd_pcm_hw_params(handle,params);
snd_mixer_open(&mixer,0);
snd_mixer_attach(mixer,"default");
snd_mixer_selem_register(mixer,NULL,NULL);
snd_mixer_load(mixer);
for(pcm_element = snd_mixer_first_elem(mixer);pcm_element;pcm_element=snd_mixer_elem_next(pcm_element))
{
if(snd_mixer_elem_get_type(pcm_element)==SND_MIXER_ELEM_SIMPLE && snd_mixer_selem_is_active(pcm_element))
{
if(!strcmp(snd_mixer_selem_get_name(pcm_element),"Master"))
{
snd_mixer_selem_set_playback_volume_range(pcm_element,0,100);
snd_mixer_selem_set_playback_volume_all(pcm_element,(long)100);
}
}
}
buffer = (char*)malloc(size);
while(1)
{
rc = fread(buffer,1,size,fp);
if(0== rc)
break;
while((rc = snd_pcm_writei(handle,buffer,size))<0)
{
usleep(200);
if(-EPIPE == rc)
snd_pcm_prepare(handle);
else if(0 > rc)
printf("error fomr writei\n");
}
}
snd_pcm_drain(handle);
snd_pcm_close(handle);
free(buffer);
snd_mixer_close(mixer);
fclose(fp);
return 0;
}
static bool
alsa_mixer_open(struct mixer *data, GError **error_r)
{
struct alsa_mixer *am = (struct alsa_mixer *)data;
int err;
snd_mixer_elem_t *elem;
am->volume_set = -1;
err = snd_mixer_open(&am->handle, 0);
if (err < 0) {
g_set_error(error_r, alsa_mixer_quark(), err,
"snd_mixer_open() failed: %s", snd_strerror(err));
return false;
}
if ((err = snd_mixer_attach(am->handle, am->device)) < 0) {
alsa_mixer_close(data);
g_set_error(error_r, alsa_mixer_quark(), err,
"failed to attach to %s: %s",
am->device, snd_strerror(err));
return false;
}
if ((err = snd_mixer_selem_register(am->handle, NULL,
NULL)) < 0) {
alsa_mixer_close(data);
g_set_error(error_r, alsa_mixer_quark(), err,
"snd_mixer_selem_register() failed: %s",
snd_strerror(err));
return false;
}
if ((err = snd_mixer_load(am->handle)) < 0) {
alsa_mixer_close(data);
g_set_error(error_r, alsa_mixer_quark(), err,
"snd_mixer_load() failed: %s\n",
snd_strerror(err));
return false;
}
elem = snd_mixer_first_elem(am->handle);
while (elem) {
if (snd_mixer_elem_get_type(elem) == SND_MIXER_ELEM_SIMPLE) {
if ((g_ascii_strcasecmp(am->control,
snd_mixer_selem_get_name(elem)) == 0) &&
(am->index == snd_mixer_selem_get_index(elem))) {
break;
}
}
elem = snd_mixer_elem_next(elem);
}
if (elem) {
am->elem = elem;
snd_mixer_selem_get_playback_volume_range(am->elem,
&am->volume_min,
&am->volume_max);
return true;
}
alsa_mixer_close(data);
g_set_error(error_r, alsa_mixer_quark(), 0,
"no such mixer control: %s", am->control);
return false;
}
