C++ (Cpp) snd_hda_add_vmaster примеры использования

Пример #1

static int ad198x_build_controls(struct hda_codec *codec)
{
	struct ad198x_spec *spec = codec->spec;
	struct snd_kcontrol *kctl;
	unsigned int i;
	int err;

	for (i = 0; i < spec->num_mixers; i++) {
		err = snd_hda_add_new_ctls(codec, spec->mixers[i]);
		if (err < 0)
			return err;
	}
	if (spec->multiout.dig_out_nid) {
		err = snd_hda_create_spdif_out_ctls(codec, spec->multiout.dig_out_nid);
		if (err < 0)
			return err;
		err = snd_hda_create_spdif_share_sw(codec,
						    &spec->multiout);
		if (err < 0)
			return err;
		spec->multiout.share_spdif = 1;
	} 
	if (spec->dig_in_nid) {
		err = snd_hda_create_spdif_in_ctls(codec, spec->dig_in_nid);
		if (err < 0)
			return err;
	}

	/* create beep controls if needed */
#ifdef CONFIG_SND_HDA_INPUT_BEEP
	if (spec->beep_amp) {
		struct snd_kcontrol_new *knew;
		knew = spec->analog_beep ? ad_beep2_mixer : ad_beep_mixer;
		for ( ; knew->name; knew++) {
			struct snd_kcontrol *kctl;
			kctl = snd_ctl_new1(knew, codec);
			if (!kctl)
				return -ENOMEM;
			kctl->private_value = spec->beep_amp;
			err = snd_hda_ctl_add(codec, 0, kctl);
			if (err < 0)
				return err;
		}
	}
#endif

	/* if we have no master control, let's create it */
	if (!snd_hda_find_mixer_ctl(codec, "Master Playback Volume")) {
		unsigned int vmaster_tlv[4];
		snd_hda_set_vmaster_tlv(codec, spec->vmaster_nid,
					HDA_OUTPUT, vmaster_tlv);
		err = snd_hda_add_vmaster(codec, "Master Playback Volume",
					  vmaster_tlv,
					  (spec->slave_vols ?
					   spec->slave_vols : ad_slave_vols));
		if (err < 0)
			return err;
	}
	if (!snd_hda_find_mixer_ctl(codec, "Master Playback Switch")) {
		err = snd_hda_add_vmaster(codec, "Master Playback Switch",
					  NULL,
					  (spec->slave_sws ?
					   spec->slave_sws : ad_slave_sws));
		if (err < 0)
			return err;
	}

	ad198x_free_kctls(codec); /* no longer needed */

	/* assign Capture Source enums to NID */
	kctl = snd_hda_find_mixer_ctl(codec, "Capture Source");
	if (!kctl)
		kctl = snd_hda_find_mixer_ctl(codec, "Input Source");
	for (i = 0; kctl && i < kctl->count; i++) {
		err = snd_hda_add_nid(codec, kctl, i, spec->capsrc_nids[i]);
		if (err < 0)
			return err;
	}

	/* assign IEC958 enums to NID */
	kctl = snd_hda_find_mixer_ctl(codec,
			SNDRV_CTL_NAME_IEC958("",PLAYBACK,NONE) "Source");
	if (kctl) {
		err = snd_hda_add_nid(codec, kctl, 0,
				      spec->multiout.dig_out_nid);
		if (err < 0)
			return err;
	}

	return 0;
}

Пример #2

static int ad198x_build_controls(struct hda_codec *codec)
{
	struct ad198x_spec *spec = codec->spec;
	struct snd_kcontrol *kctl;
	unsigned int i;
	int err;

	for (i = 0; i < spec->num_mixers; i++) {
		err = snd_hda_add_new_ctls(codec, spec->mixers[i]);
		if (err < 0)
			return err;
	}
	if (spec->multiout.dig_out_nid) {
		err = snd_hda_create_spdif_out_ctls(codec,
						    spec->multiout.dig_out_nid,
						    spec->multiout.dig_out_nid);
		if (err < 0)
			return err;
		err = snd_hda_create_spdif_share_sw(codec,
						    &spec->multiout);
		if (err < 0)
			return err;
		spec->multiout.share_spdif = 1;
	} 
	if (spec->dig_in_nid) {
		err = snd_hda_create_spdif_in_ctls(codec, spec->dig_in_nid);
		if (err < 0)
			return err;
	}

	/* create beep controls if needed */
	err = create_beep_ctls(codec);
	if (err < 0)
		return err;

	/* if we have no master control, let's create it */
	if (!snd_hda_find_mixer_ctl(codec, "Master Playback Volume")) {
		unsigned int vmaster_tlv[4];
		snd_hda_set_vmaster_tlv(codec, spec->vmaster_nid,
					HDA_OUTPUT, vmaster_tlv);
		err = __snd_hda_add_vmaster(codec, "Master Playback Volume",
					  vmaster_tlv,
					  (spec->slave_vols ?
					   spec->slave_vols : ad_slave_pfxs),
					  "Playback Volume",
					  !spec->avoid_init_slave_vol, NULL);
		if (err < 0)
			return err;
	}
	if (!snd_hda_find_mixer_ctl(codec, "Master Playback Switch")) {
		err = snd_hda_add_vmaster(codec, "Master Playback Switch",
					  NULL,
					  (spec->slave_sws ?
					   spec->slave_sws : ad_slave_pfxs),
					  "Playback Switch");
		if (err < 0)
			return err;
	}

	/* assign Capture Source enums to NID */
	kctl = snd_hda_find_mixer_ctl(codec, "Capture Source");
	if (!kctl)
		kctl = snd_hda_find_mixer_ctl(codec, "Input Source");
	for (i = 0; kctl && i < kctl->count; i++) {
		err = snd_hda_add_nid(codec, kctl, i, spec->capsrc_nids[i]);
		if (err < 0)
			return err;
	}

	/* assign IEC958 enums to NID */
	kctl = snd_hda_find_mixer_ctl(codec,
			SNDRV_CTL_NAME_IEC958("",PLAYBACK,NONE) "Source");
	if (kctl) {
		err = snd_hda_add_nid(codec, kctl, 0,
				      spec->multiout.dig_out_nid);
		if (err < 0)
			return err;
	}

	return 0;
}