ReceiveTempSMS
/
Sweden-Number
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Use slighly more accurate formula for C816. 

Wrap a couple of comments to 80 columns.
This commit is contained in:
Francois Gouget 2002-12-15 01:12:03 +00:00 committed by Alexandre Julliard
parent f650222131
commit ec55d23568
1 changed files with 9 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
dlls/msacm/pcmconverter.c
View File

@ -128,15 +128,15 @@ static DWORD PCM_GetFormatIndex(LPWAVEFORMATEX wfx)
* parameters:
* + 8 bit unsigned vs 16 bit signed
* + mono vs stereo (1 or 2 channels)
* + sampling rate (8.0, 11.025, 22.05, 44.1 kHz are defined, but algo shall work
* in all cases)
* + sampling rate (8.0, 11.025, 22.05, 44.1 kHz are defined, but algo
* shall work in all cases)
*
* mono => stereo: copy the same sample on Left & Right channels
* stereo =) mono: use the average value of samples from Left & Right channels
* resampling; we lookup for each destination sample the two source adjacent samples
* were src <= dst < src+1 (dst is increased by a fractional value which is
* equivalent to the increment by one on src); then we use a linear
* interpolation between src and src+1
* resampling; we lookup for each destination sample the two source adjacent
* samples were src <= dst < src+1 (dst is increased by a fractional
* value which is equivalent to the increment by one on src); then we
* use a linear interpolation between src and src+1
*/
/***********************************************************************
@ -146,7 +146,7 @@ static DWORD PCM_GetFormatIndex(LPWAVEFORMATEX wfx)
*/
static inline short C816(unsigned char b)
{
return (short)(b ^ 0x80) * 256;
return (short)((b+(b << 8))-32768);
}
/***********************************************************************
@ -784,8 +784,8 @@ static LRESULT PCM_FormatDetails(PACMFORMATDETAILSW afd, DWORD dwQuery)
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;
/* 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;