Velkost hlasitosti mic – C / C++ – Fórum – Programujte.com

caute.
potreboval by som zistit velkost signalu z mikrofonu, asi je to line in vstup do zvukovej karty. upresnim:
zapichnem do pc mikrofon, nieco do neho kecnem a ja chcem vediet aky je ten signal velky. nepotrebujem vediet ze mi to bude treba vzorkovat napriklad s periodov 50ms, to mam vsetko spravene. ja len uz tyzden hladam a skusam, ako sa dopracovat k tej hodnote. z codeproject som pozrel hadam 20 podobnych programov, ale ani jeden nerobi co potrebujem. napr.:
http://www.codeproject.com/KB/winsdk/SoundRecord.aspx
http://www.codeguru.com/cpp/g-m/multimedia/article.php/c1575/
(mimochodom ten druhy odkaz, tak to ani nefunguje)
trochu sa to podoba, ale vobec to nie je co potrebujem :-). pouzival som nato funkcie mixer s roznymi parametrami, neviem ci sa to sem zmesti, dam tu jednu variantu. pozeral som celu dokumentaciu SDL_mixer, OpenAL, ani tam nic podobne, alebo som mental, preto som uz donuteny sa opytat. dx som pozrel len tak zbezne, pretoze robim s opengl, tak zasadne odmietam dsound, ale ak by mi vedel niekto poradit aj pomocou dx, aj tak budem velmi rad!

	bool ZistiHlasitost() {

		UINT pocet;

		HMIXER hMixer;

		MIXERCAPS mCaps;

		memset(&mCaps, 0, sizeof(mCaps));

		if ((pocet = waveInGetNumDevs()) == 0) {

			return false;

		}

		if (mixerOpen(&hMixer, 0, 0, 0, MIXER_OBJECTF_WAVEIN) != MMSYSERR_NOERROR)

			return false;

		if (mixerGetDevCaps((UINT)hMixer, &mCaps, sizeof(mCaps)) != MMSYSERR_NOERROR)

			return false;

		MIXERLINE mxLine;

		MIXERCONTROL mxControl;

		MIXERLINECONTROLS mxLiCo;

		// cast mixer line

		mxLine.cbStruct = sizeof(MIXERLINE);

		mxLine.dwComponentType = MIXERLINE_COMPONENTTYPE_SRC_MICROPHONE;

		if (mixerGetLineInfo((HMIXEROBJ)hMixer, &mxLine, 

			MIXER_GETLINEINFOF_COMPONENTTYPE | MIXER_OBJECTF_MIXER) != MMSYSERR_NOERROR)

			return false;

		// cast mixer line control

		mxLiCo.cbStruct = sizeof(MIXERLINECONTROLS);

		mxLiCo.dwLineID = mxLine.dwLineID;

		mxLiCo.dwControlType = MIXERCONTROL_CONTROLTYPE_PEAKMETER;

		mxLiCo.cControls = 1;

		mxLiCo.cbmxctrl = sizeof(MIXERCONTROL);

		mxLiCo.pamxctrl = & mxControl;

		if (mixerGetLineControls((HMIXEROBJ)hMixer, &mxLiCo, 

			MIXER_GETLINECONTROLSF_ONEBYTYPE | MIXER_OBJECTF_HMIXER) != MMSYSERR_NOERROR)

			return false;

		// zbieranie dat

		CString nazov = mxControl.szName;

		long minHod = mxControl.Bounds.dwMinimum;

		long maxHod = mxControl.Bounds.dwMaximum;

		

		MIXERCONTROLDETAILS mxDetail;

		MIXERCONTROLDETAILS_SIGNED volMic;

		mxDetail.cbStruct = sizeof(MIXERCONTROLDETAILS);

		mxDetail.dwControlID = mxControl.dwControlID;

		mxDetail.cChannels = mxLine.cChannels;

		mxDetail.cMultipleItems = 0;

		mxDetail.cbDetails = sizeof(MIXERCONTROLDETAILS_SIGNED);

		mxDetail.paDetails = &volMic;

		if (mixerGetControlDetails((HMIXEROBJ)hMixer, &mxDetail,

			MIXER_GETCONTROLDETAILSF_VALUE | MIXER_OBJECTF_HMIXER) != MMSYSERR_NOERROR)

			return false;

		nazov.Format(L"nazov: %s\npocet: %d\nmax: %d\nmin: %d\nhodnota: %d",

			mxControl.szName, pocet, maxHod, minHod, volMic.lValue);

		MessageBox(0, nazov.GetBuffer(), L"mixer", MB_ICONINFORMATION);

		mixerClose(hMixer);

		return true;

	}

Osobne bych radil zkusit FMOD nebo BASS knihovny, protoze psat to v tomhle je o nervy a zminene knihovny maji spoustu veci krasne vyresenych a hlavne se v tom celkove lepe pise a maji poradnou dokumentaci.

dannyk napsal:
Osobne bych radil zkusit FMOD nebo BASS knihovny, protoze psat to v tomhle je o nervy a zminene knihovny maji spoustu veci krasne vyresenych a hlavne se v tom celkove lepe pise a maji poradnou dokumentaci.