[PATCH 3/4] msgsm32.acm: Add support for formats
Maarten Lankhorst (none)
mlankhorst at patser.
Mon Aug 3 08:59:19 CDT 2009
---
dlls/msgsm32.acm/msgsm32.c | 230 +++++++++++++++++++++++++++++++++++++++++++-
1 files changed, 229 insertions(+), 1 deletions(-)
diff --git a/dlls/msgsm32.acm/msgsm32.c b/dlls/msgsm32.acm/msgsm32.c
index 7f8a1ec..098acd9 100644
--- a/dlls/msgsm32.acm/msgsm32.c
+++ b/dlls/msgsm32.acm/msgsm32.c
@@ -139,6 +139,229 @@ static LRESULT GSM_DriverDetails(PACMDRIVERDETAILSW add)
return MMSYSERR_NOERROR;
}
+/* Validate a WAVEFORMATEX structure */
+static DWORD GSM_FormatValidate(const WAVEFORMATEX *wfx)
+{
+ if (wfx->nChannels != 1)
+ return 0;
+
+ switch (wfx->wFormatTag)
+ {
+ case WAVE_FORMAT_PCM:
+ if (wfx->wBitsPerSample != 16)
+ {
+ WARN("PCM wBitsPerSample %u\n", wfx->wBitsPerSample);
+ return 0;
+ }
+ if (wfx->nBlockAlign != 2)
+ {
+ WARN("PCM nBlockAlign %u\n", wfx->nBlockAlign);
+ return 0;
+ }
+ if (wfx->nAvgBytesPerSec != wfx->nBlockAlign * wfx->nSamplesPerSec)
+ {
+ WARN("PCM nAvgBytesPerSec %u/%u\n",
+ wfx->nAvgBytesPerSec,
+ wfx->nBlockAlign * wfx->nSamplesPerSec);
+ return 0;
+ }
+ return 1;
+ case WAVE_FORMAT_GSM610:
+ if (wfx->cbSize < sizeof(WORD))
+ {
+ WARN("GSM cbSize %u\n", wfx->cbSize);
+ return 0;
+ }
+ if (wfx->wBitsPerSample != 0)
+ {
+ WARN("GSM wBitsPerSample %u\n", wfx->wBitsPerSample);
+ return 0;
+ }
+ if (wfx->nBlockAlign != 65)
+ {
+ WARN("GSM nBlockAlign %u\n", wfx->nBlockAlign);
+ return 0;
+ }
+ if (((GSM610WAVEFORMAT*)wfx)->wSamplesPerBlock != 320)
+ {
+ WARN("GSM wSamplesPerBlock %u\n",
+ ((GSM610WAVEFORMAT*)wfx)->wSamplesPerBlock);
+ return 0;
+ }
+ if (wfx->nAvgBytesPerSec != wfx->nSamplesPerSec * 65 / 320)
+ {
+ WARN("GSM nAvgBytesPerSec %d / %d\n",
+ wfx->nAvgBytesPerSec, wfx->nSamplesPerSec * 65 / 320);
+ return 0;
+ }
+ return 1;
+ default:
+ return 0;
+ }
+ return 0;
+}
+
+static const DWORD gsm_rates[] = { 8000, 11025, 22050, 44100, 48000, 96000 };
+#define NUM_RATES (sizeof(gsm_rates)/sizeof(*gsm_rates))
+
+/***********************************************************************
+ * GSM_FormatTagDetails
+ *
+ */
+static LRESULT GSM_FormatTagDetails(PACMFORMATTAGDETAILSW aftd, DWORD dwQuery)
+{
+ static const WCHAR szPcm[]={'P','C','M',0};
+ static const WCHAR szGsm[]={'G','S','M',' ','6','.','1','0',0};
+
+ switch (dwQuery)
+ {
+ case ACM_FORMATTAGDETAILSF_INDEX:
+ if (aftd->dwFormatTagIndex > 1) return ACMERR_NOTPOSSIBLE;
+ break;
+ case ACM_FORMATTAGDETAILSF_LARGESTSIZE:
+ if (aftd->dwFormatTag == WAVE_FORMAT_UNKNOWN)
+ {
+ aftd->dwFormatTagIndex = 1;
+ break;
+ }
+ /* fall thru */
+ case ACM_FORMATTAGDETAILSF_FORMATTAG:
+ switch (aftd->dwFormatTag)
+ {
+ case WAVE_FORMAT_PCM: aftd->dwFormatTagIndex = 0; break;
+ case WAVE_FORMAT_GSM610: aftd->dwFormatTagIndex = 1; break;
+ default: return ACMERR_NOTPOSSIBLE;
+ }
+ break;
+ default:
+ WARN("Unsupported query %08x\n", dwQuery);
+ return MMSYSERR_NOTSUPPORTED;
+ }
+
+ aftd->fdwSupport = ACMDRIVERDETAILS_SUPPORTF_CODEC;
+ switch (aftd->dwFormatTagIndex)
+ {
+ case 0:
+ aftd->dwFormatTag = WAVE_FORMAT_PCM;
+ aftd->cbFormatSize = sizeof(PCMWAVEFORMAT);
+ aftd->cStandardFormats = NUM_RATES;
+ lstrcpyW(aftd->szFormatTag, szPcm);
+ break;
+ case 1:
+ aftd->dwFormatTag = WAVE_FORMAT_GSM610;
+ aftd->cbFormatSize = sizeof(GSM610WAVEFORMAT);
+ aftd->cStandardFormats = NUM_RATES;
+ lstrcpyW(aftd->szFormatTag, szGsm);
+ break;
+ }
+ return MMSYSERR_NOERROR;
+}
+
+/***********************************************************************
+ * GSM_FormatDetails
+ *
+ */
+static LRESULT GSM_FormatDetails(PACMFORMATDETAILSW afd, DWORD dwQuery)
+{
+ switch (dwQuery)
+ {
+ case ACM_FORMATDETAILSF_FORMAT:
+ if (!GSM_FormatValidate(afd->pwfx)) return ACMERR_NOTPOSSIBLE;
+ break;
+ case ACM_FORMATDETAILSF_INDEX:
+ afd->pwfx->wFormatTag = afd->dwFormatTag;
+ switch (afd->dwFormatTag)
+ {
+ case WAVE_FORMAT_PCM:
+ if (afd->dwFormatIndex >= NUM_RATES) return ACMERR_NOTPOSSIBLE;
+ afd->pwfx->nChannels = 1;
+ afd->pwfx->nSamplesPerSec = gsm_rates[afd->dwFormatIndex];
+ afd->pwfx->wBitsPerSample = 16;
+ afd->pwfx->nBlockAlign = 2;
+ afd->pwfx->nAvgBytesPerSec = afd->pwfx->nSamplesPerSec * afd->pwfx->nBlockAlign;
+ break;
+ case WAVE_FORMAT_GSM610:
+ if (afd->dwFormatIndex >= NUM_RATES) return ACMERR_NOTPOSSIBLE;
+ afd->pwfx->nChannels = 1;
+ afd->pwfx->nSamplesPerSec = gsm_rates[afd->dwFormatIndex];
+ afd->pwfx->wBitsPerSample = 0;
+ afd->pwfx->nBlockAlign = 65;
+ afd->pwfx->nAvgBytesPerSec = afd->pwfx->nSamplesPerSec * 65 / 320;
+ afd->pwfx->cbSize = sizeof(WORD);
+ ((GSM610WAVEFORMAT*)afd->pwfx)->wSamplesPerBlock = 320;
+ 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;
+}
+
+/***********************************************************************
+ * GSM_FormatSuggest
+ *
+ */
+static LRESULT GSM_FormatSuggest(PACMDRVFORMATSUGGEST adfs)
+{
+ /* some tests ... */
+ if (adfs->cbwfxSrc < sizeof(PCMWAVEFORMAT) ||
+ adfs->cbwfxDst < sizeof(PCMWAVEFORMAT) ||
+ !GSM_FormatValidate(adfs->pwfxSrc)) 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 = 0;
+ else
+ adfs->pwfxDst->wBitsPerSample = 16;
+ }
+ if (!(adfs->fdwSuggest & ACM_FORMATSUGGESTF_WFORMATTAG))
+ {
+ switch (adfs->pwfxSrc->wFormatTag)
+ {
+ case WAVE_FORMAT_PCM: adfs->pwfxDst->wFormatTag = WAVE_FORMAT_GSM610; break;
+ case WAVE_FORMAT_GSM610: adfs->pwfxDst->wFormatTag = WAVE_FORMAT_PCM; break;
+ }
+ }
+
+ /* recompute other values */
+ switch (adfs->pwfxDst->wFormatTag)
+ {
+ case WAVE_FORMAT_PCM:
+ adfs->pwfxDst->nBlockAlign = 2;
+ adfs->pwfxDst->nAvgBytesPerSec = adfs->pwfxDst->nSamplesPerSec * 2;
+ break;
+ case WAVE_FORMAT_GSM610:
+ if (adfs->pwfxDst->cbSize < sizeof(WORD))
+ return ACMERR_NOTPOSSIBLE;
+ adfs->pwfxDst->nBlockAlign = 65;
+ adfs->pwfxDst->nAvgBytesPerSec = adfs->pwfxDst->nSamplesPerSec * 65 / 320;
+ ((GSM610WAVEFORMAT*)adfs->pwfxDst)->wSamplesPerBlock = 320;
+ break;
+ default:
+ return ACMERR_NOTPOSSIBLE;
+ }
+
+ /* check if result is ok */
+ if (!GSM_FormatValidate(adfs->pwfxDst)) return ACMERR_NOTPOSSIBLE;
+ return MMSYSERR_NOERROR;
+}
+
/**************************************************************************
* GSM_DriverProc [exported]
*/
@@ -168,10 +391,15 @@ LRESULT CALLBACK GSM_DriverProc(DWORD_PTR dwDevID, HDRVR hDriv, UINT wMsg,
case ACMDM_DRIVER_DETAILS:
return GSM_DriverDetails((PACMDRIVERDETAILSW)dwParam1);
- /* Not implemented yet */
case ACMDM_FORMATTAG_DETAILS:
+ return GSM_FormatTagDetails((PACMFORMATTAGDETAILSW)dwParam1, dwParam2);
+
case ACMDM_FORMAT_DETAILS:
+ return GSM_FormatDetails((PACMFORMATDETAILSW)dwParam1, dwParam2);
+
case ACMDM_FORMAT_SUGGEST:
+ return GSM_FormatSuggest((PACMDRVFORMATSUGGEST)dwParam1);
+
case ACMDM_STREAM_OPEN:
case ACMDM_STREAM_CLOSE:
case ACMDM_STREAM_SIZE:
--
1.6.3.3
--------------050300090109010908080109--
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