/* -*- tab-width: 8; c-basic-offset: 4 -*- */

/*
 *      MSACM32 library
 *
 *      Copyright 1998  Patrik Stridvall
 *		  1999	Eric Pouech
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
 */

#include <stdarg.h>

#include "windef.h"
#include "winbase.h"
#include "winerror.h"
#include "wine/debug.h"
#include "mmsystem.h"
#define NOBITMAP
#include "mmreg.h"
#include "msacm.h"
#include "msacmdrv.h"
#include "wineacm.h"

WINE_DEFAULT_DEBUG_CHANNEL(msacm);

/**********************************************************************/

HINSTANCE	MSACM_hInstance32 = 0;

/***********************************************************************
 *           DllMain (MSACM32.init)
 */
BOOL WINAPI DllMain(HINSTANCE hInstDLL, DWORD fdwReason, LPVOID lpvReserved)
{
    TRACE("%p 0x%x %p\n", hInstDLL, fdwReason, lpvReserved);

    switch (fdwReason) {
    case DLL_PROCESS_ATTACH:
        DisableThreadLibraryCalls(hInstDLL);
        MSACM_hHeap = HeapCreate(0, 0x10000, 0);
        MSACM_hInstance32 = hInstDLL;
        MSACM_RegisterAllDrivers();
	break;
    case DLL_PROCESS_DETACH:
        MSACM_UnregisterAllDrivers();
        HeapDestroy(MSACM_hHeap);
        MSACM_hHeap = NULL;
        MSACM_hInstance32 = NULL;
	break;
    default:
	break;
    }
    return TRUE;
}

/***********************************************************************
 *           XRegThunkEntry (MSACM32.1)
 * FIXME
 *   No documentation found.
 */

/***********************************************************************
 *           acmGetVersion (MSACM32.@)
 */
DWORD WINAPI acmGetVersion(void)
{
    OSVERSIONINFOA version;

    version.dwOSVersionInfoSize = sizeof(OSVERSIONINFOA);
    if (!GetVersionExA( &version ))
	return 0x04030000;

    switch (version.dwPlatformId) {
    case VER_PLATFORM_WIN32_NT:
	return 0x04000565; /* 4.0.1381 */
    default:
        FIXME("%x not supported\n", version.dwPlatformId);
    case VER_PLATFORM_WIN32_WINDOWS:
	return 0x04030000; /* 4.3.0 */
    }
}

/***********************************************************************
 *           acmMessage32 (MSACM32.35)
 * FIXME
 *   No documentation found.
 */

/***********************************************************************
 *           acmMetrics (MSACM32.@)
 */
MMRESULT WINAPI acmMetrics(HACMOBJ hao, UINT uMetric, LPVOID pMetric)
{
    PWINE_ACMOBJ 	pao = MSACM_GetObj(hao, WINE_ACMOBJ_DONTCARE);
    BOOL 		bLocal = TRUE;
    PWINE_ACMDRIVERID	padid;
    DWORD		val = 0;
    unsigned int	i;
    MMRESULT		mmr = MMSYSERR_NOERROR;

    TRACE("(%p, %d, %p);\n", hao, uMetric, pMetric);

#define CheckLocal(padid) (!bLocal || ((padid)->fdwSupport & ACMDRIVERDETAILS_SUPPORTF_LOCAL))

    switch (uMetric) {
    case ACM_METRIC_COUNT_DRIVERS:
	bLocal = FALSE;
	/* fall through */
    case ACM_METRIC_COUNT_LOCAL_DRIVERS:
	if (hao) return MMSYSERR_INVALHANDLE;
        if (!pMetric) return MMSYSERR_INVALPARAM;
	for (padid = MSACM_pFirstACMDriverID; padid; padid = padid->pNextACMDriverID)
	    if (!(padid->fdwSupport & ACMDRIVERDETAILS_SUPPORTF_DISABLED) && CheckLocal(padid))
		val++;
	*(LPDWORD)pMetric = val;
	break;

    case ACM_METRIC_COUNT_CODECS:
	bLocal = FALSE;
	/* fall through */
    case ACM_METRIC_COUNT_LOCAL_CODECS:
	if (hao) return MMSYSERR_INVALHANDLE;
        if (!pMetric) return MMSYSERR_INVALPARAM;
	for (padid = MSACM_pFirstACMDriverID; padid; padid = padid->pNextACMDriverID)
	    if (!(padid->fdwSupport & ACMDRIVERDETAILS_SUPPORTF_DISABLED) &&
		(padid->fdwSupport & ACMDRIVERDETAILS_SUPPORTF_CODEC) &&
		CheckLocal(padid))
		val++;
	*(LPDWORD)pMetric = val;
	break;

    case ACM_METRIC_COUNT_CONVERTERS:
	bLocal = FALSE;
	/* fall through */
    case ACM_METRIC_COUNT_LOCAL_CONVERTERS:
	if (hao) return MMSYSERR_INVALHANDLE;
        if (!pMetric) return MMSYSERR_INVALPARAM;
	for (padid = MSACM_pFirstACMDriverID; padid; padid = padid->pNextACMDriverID)
	    if (!(padid->fdwSupport & ACMDRIVERDETAILS_SUPPORTF_DISABLED) &&
		 (padid->fdwSupport & ACMDRIVERDETAILS_SUPPORTF_CONVERTER) &&
		CheckLocal(padid))
		val++;
	*(LPDWORD)pMetric = val;
	break;

    case ACM_METRIC_COUNT_FILTERS:
	bLocal = FALSE;
	/* fall through */
    case ACM_METRIC_COUNT_LOCAL_FILTERS:
	if (hao) return MMSYSERR_INVALHANDLE;
        if (!pMetric) return MMSYSERR_INVALPARAM;
	for (padid = MSACM_pFirstACMDriverID; padid; padid = padid->pNextACMDriverID)
	    if (!(padid->fdwSupport & ACMDRIVERDETAILS_SUPPORTF_DISABLED) &&
		(padid->fdwSupport & ACMDRIVERDETAILS_SUPPORTF_FILTER) &&
		CheckLocal(padid))
		val++;
	*(LPDWORD)pMetric = val;
	break;

    case ACM_METRIC_COUNT_DISABLED:
	bLocal = FALSE;
	/* fall through */
    case ACM_METRIC_COUNT_LOCAL_DISABLED:
	if (hao) return MMSYSERR_INVALHANDLE;
        if (!pMetric) return MMSYSERR_INVALPARAM;
	for (padid = MSACM_pFirstACMDriverID; padid; padid = padid->pNextACMDriverID)
	    if ((padid->fdwSupport & ACMDRIVERDETAILS_SUPPORTF_DISABLED) && CheckLocal(padid))
		val++;
	*(LPDWORD)pMetric = val;
	break;

    case ACM_METRIC_MAX_SIZE_FORMAT:
	if (hao == NULL) {
	    for (padid = MSACM_pFirstACMDriverID; padid; padid = padid->pNextACMDriverID) {
		if (!(padid->fdwSupport & ACMDRIVERDETAILS_SUPPORTF_DISABLED)) {
		    for (i = 0; i < padid->cFormatTags; i++) {
			if (val < padid->aFormatTag[i].cbwfx)
			    val = padid->aFormatTag[i].cbwfx;
		    }
		}
	    }
	} else if (pao != NULL) {
	    switch (pao->dwType) {
	    case WINE_ACMOBJ_DRIVER:
	    case WINE_ACMOBJ_DRIVERID:
		padid = pao->pACMDriverID;
		break;
	    default:
		return MMSYSERR_INVALHANDLE;
	    }
	    if (!(padid->fdwSupport & ACMDRIVERDETAILS_SUPPORTF_DISABLED)) {
		for (i = 0; i < padid->cFormatTags; i++) {
		    if (val < padid->aFormatTag[i].cbwfx)
			val = padid->aFormatTag[i].cbwfx;
		}
	    }
	} else {
	    return MMSYSERR_INVALHANDLE;
	}
        if (!pMetric) return MMSYSERR_INVALPARAM;
	*(LPDWORD)pMetric = val;
        break;

    case ACM_METRIC_COUNT_HARDWARE:
        if (hao) return MMSYSERR_INVALHANDLE;
        if (!pMetric) return MMSYSERR_INVALPARAM;
        *(LPDWORD)pMetric = 0;
        FIXME("ACM_METRIC_COUNT_HARDWARE not implemented\n");
        break;

    case ACM_METRIC_DRIVER_PRIORITY:
        /* Return current list position of driver */
        if (!hao) return MMSYSERR_INVALHANDLE;
        mmr = MMSYSERR_INVALHANDLE;
        for (i = 1, padid = MSACM_pFirstACMDriverID; padid; i++, padid = padid->pNextACMDriverID) {
            if (padid == (PWINE_ACMDRIVERID)hao) {
                if (pMetric) {
                    *(LPDWORD)pMetric = i;
                    mmr = MMSYSERR_NOERROR;
                } else {
                    mmr = MMSYSERR_INVALPARAM;
                }
                break;
            }
        }
        break;
        
    case ACM_METRIC_DRIVER_SUPPORT:
        /* Return fdwSupport for driver */
        if (!hao) return MMSYSERR_INVALHANDLE;
        mmr = MMSYSERR_INVALHANDLE;
        for (padid = MSACM_pFirstACMDriverID; padid; padid = padid->pNextACMDriverID) {
            if (padid == (PWINE_ACMDRIVERID)hao) {
                if (pMetric) {
                    *(LPDWORD)pMetric = padid->fdwSupport;
                    mmr = MMSYSERR_NOERROR;
                } else {
                    mmr = MMSYSERR_INVALPARAM;
                }
                break;
            }
        }
        break;

    case ACM_METRIC_HARDWARE_WAVE_INPUT:
    case ACM_METRIC_HARDWARE_WAVE_OUTPUT:
    case ACM_METRIC_MAX_SIZE_FILTER:
    default:
	FIXME("(%p, %d, %p): stub\n", hao, uMetric, pMetric);
	mmr = MMSYSERR_NOTSUPPORTED;
    }
    return mmr;
}