コード例 #1
0
ファイル: alsa.c プロジェクト: TheBaobabTeam/linphone-android
static MSSndCard * alsa_card_new(int id)
{
	MSSndCard * obj;
	char *name=NULL;
	AlsaData *ad;
	int err;

	if (id!=-1){
		err=snd_card_get_name(id,&name);
		if (err<0) {
			return NULL;
		}
	}
	obj=ms_snd_card_new(&alsa_card_desc);
	ad=(AlsaData*)obj->data;
	if (id==-1) {
		/* the default pcm device */
		obj->name=ms_strdup("default device");
		ad->pcmdev=ms_strdup("default");
		ad->mixdev=ms_strdup("default");
	}else{
		/* remove trailing spaces from card name */
		char *pos1, *pos2;
		pos1=ms_strdup(name);
		pos2=pos1+strlen(pos1)-1;
		for (; pos2>pos1 && *pos2==' '; pos2--) *pos2='\0';
		obj->name=pos1;
		ad->pcmdev=ms_strdup_printf("default:%i",id);
		ad->mixdev=ms_strdup_printf("default:%i",id);
		{
			snd_mixer_t *mixer;
			mixer = alsa_mixer_open(ad->mixdev);
			if (mixer==NULL) {
				ms_free(ad->mixdev);
				ad->mixdev=ms_strdup_printf("hw:%i",id);
			} else {
				alsa_mixer_close(mixer);
			}
		}
	}
	/*check card capabilities: */
	obj->capabilities=get_card_capabilities(ad->pcmdev);
	if (obj->capabilities==0){
		ms_warning("Strange, sound card %s does not seems to be capable of anything, retrying with plughw...",obj->name);
		/*retry with plughw: this workarounds an alsa bug*/
		ms_free(ad->pcmdev);
		ad->pcmdev=ms_strdup_printf("plughw:%i",id);
		obj->capabilities=get_card_capabilities(ad->pcmdev);
		if (obj->capabilities==0){
			ms_warning("Strange, sound card %s seems totally unusable.",obj->name);
		}
	}
	free(name);
	/*ms_message("alsa device %s found",obj->name);*/
	return obj;
}
コード例 #2
0
static void alsa_card_set_source(MSSndCard *obj,MSSndCardCapture source)
{
	snd_mixer_t *mixer;
	AlsaData *ad=(AlsaData*)obj->data;
	mixer=alsa_mixer_open(ad->mixdev);
	if (mixer==NULL) return;
	switch (source){
		case MS_SND_CARD_MIC:
			set_mixer_element(mixer,"Mic",1,CAPTURE_SWITCH);
			set_mixer_element(mixer,"Capture",1,CAPTURE_SWITCH);
			break;
		case MS_SND_CARD_LINE:
			set_mixer_element(mixer,"Line",1,CAPTURE_SWITCH);
			set_mixer_element(mixer,"Capture",1,CAPTURE_SWITCH);
			break;
	}
	alsa_mixer_close(mixer);
}
コード例 #3
0
static void alsa_card_set_level(MSSndCard *obj,MSSndCardMixerElem e,int a)
{	
	snd_mixer_t *mixer;
	AlsaData *ad=(AlsaData*)obj->data;
	mixer=alsa_mixer_open(ad->mixdev);
	if (mixer==NULL) return ;
	switch(e){
		case MS_SND_CARD_MASTER:
			set_mixer_element(mixer,"Master",a,PLAYBACK);
		break;
		case MS_SND_CARD_CAPTURE:
			set_mixer_element(mixer,"Capture",a,CAPTURE);
		break;
		case MS_SND_CARD_PLAYBACK:
			set_mixer_element(mixer,"PCM",a,PLAYBACK);
		break;
		default:
			ms_warning("alsa_card_set_level: unsupported command.");
	}
	alsa_mixer_close(mixer);
}