msgsm32.acm: Add support for encoding and decoding.
Also makes the code only load the libgsm library only when it is used instead of on initialization of the dll.
This commit is contained in:
Maarten Lankhorst
Alexandre Julliard
parent
37a89ff073
commit
a89ba9e47e
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@ -98,11 +98,6 @@ static LRESULT GSM_drvFree(void)
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#else
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static LRESULT GSM_drvLoad(void)
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{
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return 1;
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}
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static LRESULT GSM_drvFree(void)
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{
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return 1;
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@ -362,6 +357,214 @@ static LRESULT GSM_FormatSuggest(PACMDRVFORMATSUGGEST adfs)
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return MMSYSERR_NOERROR;
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}
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#ifdef SONAME_LIBGSM
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/***********************************************************************
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* GSM_StreamOpen
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*
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*/
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static LRESULT GSM_StreamOpen(PACMDRVSTREAMINSTANCE adsi)
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{
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int used = 1;
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gsm r;
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if (!GSM_FormatValidate(adsi->pwfxSrc) || !GSM_FormatValidate(adsi->pwfxDst))
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return MMSYSERR_NOTSUPPORTED;
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if (adsi->pwfxSrc->nSamplesPerSec != adsi->pwfxDst->nSamplesPerSec)
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return MMSYSERR_NOTSUPPORTED;
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if (!GSM_drvLoad()) return MMSYSERR_NOTSUPPORTED;
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r = pgsm_create();
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if (!r)
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return MMSYSERR_NOMEM;
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if (pgsm_option(r, GSM_OPT_WAV49, &used) < 0)
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{
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FIXME("Your libgsm library is doesn't support GSM_OPT_WAV49\n");
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FIXME("Please recompile libgsm with WAV49 support\n");
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pgsm_destroy(r);
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return MMSYSERR_NOTSUPPORTED;
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}
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adsi->dwDriver = (DWORD_PTR)r;
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return MMSYSERR_NOERROR;
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}
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/***********************************************************************
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* GSM_StreamClose
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*
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*/
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static LRESULT GSM_StreamClose(PACMDRVSTREAMINSTANCE adsi)
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{
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pgsm_destroy((gsm)adsi->dwDriver);
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return MMSYSERR_NOERROR;
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}
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/***********************************************************************
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* GSM_StreamSize
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*
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*/
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static LRESULT GSM_StreamSize(const ACMDRVSTREAMINSTANCE *adsi, PACMDRVSTREAMSIZE adss)
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{
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switch (adss->fdwSize)
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{
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case ACM_STREAMSIZEF_DESTINATION:
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/* cbDstLength => cbSrcLength */
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if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM &&
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adsi->pwfxDst->wFormatTag == WAVE_FORMAT_GSM610)
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{
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adss->cbSrcLength = adss->cbDstLength / 65 * 640;
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}
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else if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_GSM610 &&
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adsi->pwfxDst->wFormatTag == WAVE_FORMAT_PCM)
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{
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adss->cbSrcLength = adss->cbDstLength / 640 * 65;
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}
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else
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{
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return MMSYSERR_NOTSUPPORTED;
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}
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return MMSYSERR_NOERROR;
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case ACM_STREAMSIZEF_SOURCE:
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/* cbSrcLength => cbDstLength */
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if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM &&
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adsi->pwfxDst->wFormatTag == WAVE_FORMAT_GSM610)
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{
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adss->cbDstLength = (adss->cbSrcLength + 639) / 640 * 65;
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}
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else if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_GSM610 &&
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adsi->pwfxDst->wFormatTag == WAVE_FORMAT_PCM)
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{
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adss->cbDstLength = adss->cbSrcLength / 65 * 640;
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}
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else
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{
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return MMSYSERR_NOTSUPPORTED;
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}
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return MMSYSERR_NOERROR;
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default:
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WARN("Unsupported query %08x\n", adss->fdwSize);
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return MMSYSERR_NOTSUPPORTED;
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}
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}
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/***********************************************************************
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* GSM_StreamConvert
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*
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*/
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static LRESULT GSM_StreamConvert(PACMDRVSTREAMINSTANCE adsi, PACMDRVSTREAMHEADER adsh)
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{
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gsm r = (gsm)adsi->dwDriver;
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DWORD nsrc = 0;
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DWORD ndst = 0;
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BYTE *src = adsh->pbSrc;
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BYTE *dst = adsh->pbDst;
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int odd = 0;
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if (adsh->fdwConvert &
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~(ACM_STREAMCONVERTF_BLOCKALIGN|
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ACM_STREAMCONVERTF_END|
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ACM_STREAMCONVERTF_START))
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{
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FIXME("Unsupported fdwConvert (%08x), ignoring it\n", adsh->fdwConvert);
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}
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/* Reset the index to 0, just to be sure */
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pgsm_option(r, GSM_OPT_FRAME_INDEX, &odd);
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/* The native ms codec writes 65 bytes, and this requires 2 libgsm calls.
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* First 32 bytes are written, or 33 bytes read
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* Second 33 bytes are written, or 32 bytes read
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*/
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/* Decode */
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if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_GSM610)
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{
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if (adsh->cbSrcLength / 65 * 640 > adsh->cbDstLength)
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{
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return ACMERR_NOTPOSSIBLE;
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}
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while (nsrc + 65 <= adsh->cbSrcLength)
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{
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/* Decode data */
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if (pgsm_decode(r, src + nsrc, (gsm_signal*)(dst + ndst)) < 0)
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FIXME("Couldn't decode data\n");
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ndst += 320;
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nsrc += 33;
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if (pgsm_decode(r, src + nsrc, (gsm_signal*)(dst + ndst)) < 0)
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FIXME("Couldn't decode data\n");
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ndst += 320;
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nsrc += 32;
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}
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}
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else
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{
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/* Testing a little seems to reveal that despite being able to fit
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* inside the buffer if ACM_STREAMCONVERTF_BLOCKALIGN is set
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* it still rounds up
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*/
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if ((adsh->cbSrcLength + 639) / 640 * 65 > adsh->cbDstLength)
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{
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return ACMERR_NOTPOSSIBLE;
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}
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/* The packing algorythm writes 32 bytes, then 33 bytes,
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* and it seems to pad to align to 65 bytes always
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* adding extra data where necessary
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*/
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while (nsrc + 640 <= adsh->cbSrcLength)
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{
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/* Encode data */
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pgsm_encode(r, (gsm_signal*)(src+nsrc), dst+ndst);
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nsrc += 320;
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ndst += 32;
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pgsm_encode(r, (gsm_signal*)(src+nsrc), dst+ndst);
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nsrc += 320;
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ndst += 33;
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}
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/* If ACM_STREAMCONVERTF_BLOCKALIGN isn't set pad with zeros */
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if (!(adsh->fdwConvert & ACM_STREAMCONVERTF_BLOCKALIGN) &&
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nsrc < adsh->cbSrcLength)
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{
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char emptiness[320];
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int todo = adsh->cbSrcLength - nsrc;
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if (todo > 320)
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{
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pgsm_encode(r, (gsm_signal*)(src+nsrc), dst+ndst);
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ndst += 32;
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todo -= 320;
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nsrc += 320;
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memcpy(emptiness, src+nsrc, todo);
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memset(emptiness + todo, 0, 320 - todo);
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pgsm_encode(r, (gsm_signal*)emptiness, dst+ndst);
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ndst += 33;
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}
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else
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{
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memcpy(emptiness, src+nsrc, todo);
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memset(emptiness + todo, 0, 320 - todo);
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pgsm_encode(r, (gsm_signal*)emptiness, dst+ndst);
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ndst += 32;
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memset(emptiness, 0, todo);
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pgsm_encode(r, (gsm_signal*)emptiness, dst+ndst);
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ndst += 33;
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}
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nsrc = adsh->cbSrcLength;
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}
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}
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adsh->cbSrcLengthUsed = nsrc;
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adsh->cbDstLengthUsed = ndst;
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TRACE("%d(%d) -> %d(%d)\n", nsrc, adsh->cbSrcLength, ndst, adsh->cbDstLength);
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return MMSYSERR_NOERROR;
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}
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#endif
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/**************************************************************************
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* GSM_DriverProc [exported]
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*/
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@ -373,7 +576,7 @@ LRESULT CALLBACK GSM_DriverProc(DWORD_PTR dwDevID, HDRVR hDriv, UINT wMsg,
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switch (wMsg)
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{
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case DRV_LOAD: return GSM_drvLoad();
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case DRV_LOAD: return 1;
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case DRV_FREE: return GSM_drvFree();
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case DRV_OPEN: return 1;
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case DRV_CLOSE: return 1;
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@ -400,11 +603,25 @@ LRESULT CALLBACK GSM_DriverProc(DWORD_PTR dwDevID, HDRVR hDriv, UINT wMsg,
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case ACMDM_FORMAT_SUGGEST:
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return GSM_FormatSuggest((PACMDRVFORMATSUGGEST)dwParam1);
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#ifdef SONAME_LIBGSM
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case ACMDM_STREAM_OPEN:
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return GSM_StreamOpen((PACMDRVSTREAMINSTANCE)dwParam1);
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case ACMDM_STREAM_CLOSE:
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return GSM_StreamClose((PACMDRVSTREAMINSTANCE)dwParam1);
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case ACMDM_STREAM_SIZE:
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return GSM_StreamSize((PACMDRVSTREAMINSTANCE)dwParam1, (PACMDRVSTREAMSIZE)dwParam2);
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case ACMDM_STREAM_CONVERT:
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return GSM_StreamConvert((PACMDRVSTREAMINSTANCE)dwParam1, (PACMDRVSTREAMHEADER)dwParam2);
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#else
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case ACMDM_STREAM_OPEN: ERR("libgsm support not compiled in!\n");
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case ACMDM_STREAM_CLOSE:
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case ACMDM_STREAM_SIZE:
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case ACMDM_STREAM_CONVERT:
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return MMSYSERR_NOTSUPPORTED;
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#endif
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case ACMDM_HARDWARE_WAVE_CAPS_INPUT:
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case ACMDM_HARDWARE_WAVE_CAPS_OUTPUT:
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