/***********************************************************************
* MPEG3_FormatSuggest
*
*/
static LRESULT MPEG3_FormatSuggest(PACMDRVFORMATSUGGEST adfs)
{
/* some tests ... */
if (adfs->cbwfxSrc < sizeof(PCMWAVEFORMAT) ||
adfs->cbwfxDst < sizeof(PCMWAVEFORMAT) ||
MPEG3_GetFormatIndex(adfs->pwfxSrc) == 0xFFFFFFFF) return ACMERR_NOTPOSSIBLE;
/* FIXME: should do those tests against the real size (according to format tag */
/* If no suggestion for destination, then copy source value */
if (!(adfs->fdwSuggest & ACM_FORMATSUGGESTF_NCHANNELS))
adfs->pwfxDst->nChannels = adfs->pwfxSrc->nChannels;
if (!(adfs->fdwSuggest & ACM_FORMATSUGGESTF_NSAMPLESPERSEC))
adfs->pwfxDst->nSamplesPerSec = adfs->pwfxSrc->nSamplesPerSec;
if (!(adfs->fdwSuggest & ACM_FORMATSUGGESTF_WBITSPERSAMPLE))
{
if (adfs->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM)
adfs->pwfxDst->wBitsPerSample = 4;
else
adfs->pwfxDst->wBitsPerSample = 16;
}
if (!(adfs->fdwSuggest & ACM_FORMATSUGGESTF_WFORMATTAG))
{
if (adfs->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM)
adfs->pwfxDst->wFormatTag = WAVE_FORMAT_MPEGLAYER3;
else
adfs->pwfxDst->wFormatTag = WAVE_FORMAT_PCM;
}
/* check if result is ok */
if (MPEG3_GetFormatIndex(adfs->pwfxDst) == 0xFFFFFFFF) return ACMERR_NOTPOSSIBLE;
/* recompute other values */
switch (adfs->pwfxDst->wFormatTag)
{
case WAVE_FORMAT_PCM:
adfs->pwfxDst->nBlockAlign = (adfs->pwfxDst->nChannels * adfs->pwfxDst->wBitsPerSample) / 8;
adfs->pwfxDst->nAvgBytesPerSec = adfs->pwfxDst->nSamplesPerSec * adfs->pwfxDst->nBlockAlign;
break;
case WAVE_FORMAT_MPEGLAYER3:
adfs->pwfxDst->nBlockAlign = 1;
fill_in_wfx(adfs->cbwfxDst, adfs->pwfxDst, 192000);
break;
default:
FIXME("\n");
break;
}
return MMSYSERR_NOERROR;
}
/***********************************************************************
* MPEG3_StreamOpen
*
*/
static LRESULT MPEG3_StreamOpen(PACMDRVSTREAMINSTANCE adsi)
{
AcmMpeg3Data* aad;
int err;
assert(!(adsi->fdwOpen & ACM_STREAMOPENF_ASYNC));
if (MPEG3_GetFormatIndex(adsi->pwfxSrc) == 0xFFFFFFFF ||
MPEG3_GetFormatIndex(adsi->pwfxDst) == 0xFFFFFFFF)
return ACMERR_NOTPOSSIBLE;
aad = HeapAlloc(GetProcessHeap(), 0, sizeof(AcmMpeg3Data));
if (aad == 0) return MMSYSERR_NOMEM;
adsi->dwDriver = (DWORD_PTR)aad;
if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM &&
adsi->pwfxDst->wFormatTag == WAVE_FORMAT_PCM)
{
goto theEnd;
}
else if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_MPEGLAYER3 &&
adsi->pwfxDst->wFormatTag == WAVE_FORMAT_PCM)
{
/* resampling or mono <=> stereo not available
* MPEG3 algo only define 16 bit per sample output
*/
if (adsi->pwfxSrc->nSamplesPerSec != adsi->pwfxDst->nSamplesPerSec ||
adsi->pwfxSrc->nChannels != adsi->pwfxDst->nChannels ||
adsi->pwfxDst->wBitsPerSample != 16)
goto theEnd;
aad->convert = mp3_horse;
aad->mh = mpg123_new(NULL,&err);
mpg123_open_feed(aad->mh);
}
/* no encoding yet
else if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM &&
adsi->pwfxDst->wFormatTag == WAVE_FORMAT_MPEGLAYER3)
*/
else goto theEnd;
MPEG3_Reset(adsi, aad);
return MMSYSERR_NOERROR;
theEnd:
HeapFree(GetProcessHeap(), 0, aad);
adsi->dwDriver = 0L;
return MMSYSERR_NOTSUPPORTED;
}
/***********************************************************************
* MPEG3_FormatDetails
*
*/
static LRESULT MPEG3_FormatDetails(PACMFORMATDETAILSW afd, DWORD dwQuery)
{
switch (dwQuery)
{
case ACM_FORMATDETAILSF_FORMAT:
if (MPEG3_GetFormatIndex(afd->pwfx) == 0xFFFFFFFF) return ACMERR_NOTPOSSIBLE;
break;
case ACM_FORMATDETAILSF_INDEX:
afd->pwfx->wFormatTag = afd->dwFormatTag;
switch (afd->dwFormatTag)
{
case WAVE_FORMAT_PCM:
if (afd->dwFormatIndex >= NUM_PCM_FORMATS) return ACMERR_NOTPOSSIBLE;
afd->pwfx->nChannels = PCM_Formats[afd->dwFormatIndex].nChannels;
afd->pwfx->nSamplesPerSec = PCM_Formats[afd->dwFormatIndex].rate;
afd->pwfx->wBitsPerSample = PCM_Formats[afd->dwFormatIndex].nBits;
/* native MSACM uses a PCMWAVEFORMAT structure, so cbSize is not accessible
* afd->pwfx->cbSize = 0;
*/
afd->pwfx->nBlockAlign =
(afd->pwfx->nChannels * afd->pwfx->wBitsPerSample) / 8;
afd->pwfx->nAvgBytesPerSec =
afd->pwfx->nSamplesPerSec * afd->pwfx->nBlockAlign;
break;
case WAVE_FORMAT_MPEGLAYER3:
if (afd->dwFormatIndex >= NUM_MPEG3_FORMATS) return ACMERR_NOTPOSSIBLE;
afd->pwfx->nChannels = MPEG3_Formats[afd->dwFormatIndex].nChannels;
afd->pwfx->nSamplesPerSec = MPEG3_Formats[afd->dwFormatIndex].rate;
afd->pwfx->wBitsPerSample = MPEG3_Formats[afd->dwFormatIndex].nBits;
afd->pwfx->nBlockAlign = 1;
fill_in_wfx(afd->cbwfx, afd->pwfx, 192000);
break;
default:
WARN("Unsupported tag %08x\n", afd->dwFormatTag);
return MMSYSERR_INVALPARAM;
}
break;
default:
WARN("Unsupported query %08x\n", dwQuery);
return MMSYSERR_NOTSUPPORTED;
}
afd->fdwSupport = ACMDRIVERDETAILS_SUPPORTF_CODEC;
afd->szFormat[0] = 0; /* let MSACM format this for us... */
return MMSYSERR_NOERROR;
}
