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* fhandler_dsp.cc: Improved handling of 8 bit playback modes.

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Put in mock support for SNDCTL_DSP_SETFRAGMENT.
This commit is contained in:
Corinna Vinschen
2001-04-25 07:26:54 +00:00
parent 7260ea4954
commit 3a6e96682d
2 changed files with 30 additions and 3 deletions
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5
winsup/cygwin/ChangeLog
View File

@@ -1,3 +1,8 @@
Mon Apr 16 23:20:00 2001 Andy Younger <andylyounger@hotmail.com>
* fhandler_dsp.cc: Improved handling of 8 bit playback modes.
Put in mock support for SNDCTL_DSP_SETFRAGMENT.
Tue Apr 24 23:51:00 2001 Corinna Vinschen <corinna@vinschen.de>
* passwd.cc (getpwnam_r): Add pw_passwd handling as well.

28
winsup/cygwin/fhandler_dsp.cc
View File

@@ -28,7 +28,7 @@ static void CALLBACK wave_callback(HWAVE hWave, UINT msg, DWORD instance,
class Audio
{
public:
enum { MAX_BLOCKS = 8, BLOCK_SIZE = 16384 };
enum { MAX_BLOCKS = 12, BLOCK_SIZE = 16384 };
Audio ();
~Audio ();
@@ -40,7 +40,7 @@ public:
bool write (const void *pSampleData, int nBytes);
int blocks ();
void callback_sampledone (void *pData);
void setformat(int format) { formattype_ = format; }
int numbytesoutput ();
private:
@@ -55,6 +55,7 @@ private:
int bufferIndex_;
CRITICAL_SECTION lock_;
char *freeblocks_[MAX_BLOCKS];
int formattype_;
char bigwavebuffer_[MAX_BLOCKS * BLOCK_SIZE];
};
@@ -293,6 +294,17 @@ Audio::flush()
// Send internal buffer out to the soundcard
WAVEHDR *pHeader = ((WAVEHDR *)buffer_) - 1;
pHeader->dwBufferLength = bufferIndex_;
// Quick bit of sample buffer conversion
if (formattype_ == AFMT_S8)
{
unsigned char *p = ((unsigned char *)buffer_);
for (int i = 0; i < bufferIndex_; i++)
{
p[i] -= 0x7f;
}
}
if (waveOutPrepareHeader(dev_, pHeader, sizeof(WAVEHDR)) == S_OK &&
waveOutWrite(dev_, pHeader, sizeof (WAVEHDR)) == S_OK)
{
@@ -516,10 +528,13 @@ fhandler_dev_dsp::ioctl(unsigned int cmd, void *ptr)
int nBits = 0;
if (*intptr == AFMT_S16_LE)
nBits = 16;
else if (*intptr == AFMT_U8)
nBits = 8;
else if (*intptr == AFMT_S8)
nBits = 8;
if (nBits)
{
s_audio.setformat(*intptr);
s_audio.close();
if (s_audio.open(audiofreq_, nBits, audiochannels_) == true)
{
@@ -589,7 +604,14 @@ fhandler_dev_dsp::ioctl(unsigned int cmd, void *ptr)
return 1;
} break;
CASE(SNDCTL_DSP_SETFRAGMENT)
{
// Fake!! esound & mikmod require this on non PowerPC platforms.
//
return 1;
} break;
default:
debug_printf("/dev/dsp: ioctl not handled yet! FIXME:\n");
break;