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* fhandler_dsp.cc (fhandler_dev_dsp::Audio_out::stop): Add optional 

boolean argument so that playing can be stopped without playing
	pending buffers.
	(fhandler_dev_dsp::ioctl): Stop playback immediately for
	SNDCTL_DSP_RESET.  Do not reset audio parameters in this case.
	Add support for ioctl SNDCTL_DSP_GETISPACE.
	(fhandler_dev_dsp::Audio_out::emptyblocks): Now returns the number of
	completely empty blocks.
	(fhandler_dev_dsp::Audio_out::buf_info): p->fragments is now the number
	of completely empty blocks. This conforms with the OSS specification.
	(fhandler_dev_dsp::Audio_out::parsewav): Ignore wave headers that are
	not aligned on four byte boundary.
	(fhandler_dev_dsp::Audio_in::buf_info): New, needed for
	SNDCTL_DSP_GETISPACE.
This commit is contained in:
Corinna Vinschen 2004-04-13 09:38:32 +00:00
parent 825b388289
commit 37194b25f6
2 changed files with 71 additions and 21 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
winsup/cygwin/ChangeLog
View File

@ -1,3 +1,20 @@
2004-04-13 Gerd Spalink <Gerd.Spalink@t-online.de>
* fhandler_dsp.cc (fhandler_dev_dsp::Audio_out::stop): Add optional
boolean argument so that playing can be stopped without playing
pending buffers.
(fhandler_dev_dsp::ioctl): Stop playback immediately for
SNDCTL_DSP_RESET. Do not reset audio parameters in this case.
Add support for ioctl SNDCTL_DSP_GETISPACE.
(fhandler_dev_dsp::Audio_out::emptyblocks): Now returns the number of
completely empty blocks.
(fhandler_dev_dsp::Audio_out::buf_info): p->fragments is now the number
of completely empty blocks. This conforms with the OSS specification.
(fhandler_dev_dsp::Audio_out::parsewav): Ignore wave headers that are
not aligned on four byte boundary.
(fhandler_dev_dsp::Audio_in::buf_info): New, needed for
SNDCTL_DSP_GETISPACE.
2004-04-13 Corinna Vinschen <corinna@vinschen.de>
* winsup.h (IMPLEMENT_STATUS_FLAG): New macro to define status flag

75
winsup/cygwin/fhandler_dsp.cc
View File

@ -113,7 +113,7 @@ class fhandler_dev_dsp::Audio_out: public Audio
bool query (int rate, int bits, int channels);
bool start (int rate, int bits, int channels);
void stop ();
void stop (bool immediately = false);
bool write (const char *pSampleData, int nBytes);
void buf_info (audio_buf_info *p, int rate, int bits, int channels);
void callback_sampledone (WAVEHDR *pHdr);
@ -152,6 +152,7 @@ public:
bool start (int rate, int bits, int channels);
void stop ();
bool read (char *pSampleData, int &nBytes);
void buf_info (audio_buf_info *p, int rate, int bits, int channels);
void callback_blockfull (WAVEHDR *pHdr);
private:
@ -418,7 +419,7 @@ fhandler_dev_dsp::Audio_out::start (int rate, int bits, int channels)
}
void
fhandler_dev_dsp::Audio_out::stop ()
fhandler_dev_dsp::Audio_out::stop (bool immediately)
{
MMRESULT rc;
WAVEHDR *pHdr;
@ -428,8 +429,11 @@ fhandler_dev_dsp::Audio_out::stop ()
GetCurrentProcessId (), getOwner ());
if (getOwner () && !denyAccess ())
{
sendcurrent (); // force out last block whatever size..
waitforallsent (); // block till finished..
if (!immediately)
{
sendcurrent (); // force out last block whatever size..
waitforallsent (); // block till finished..
}
rc = waveOutReset (dev_);
debug_printf ("waveOutReset rc=%d", rc);
@ -507,7 +511,7 @@ fhandler_dev_dsp::Audio_out::write (const char *pSampleData, int nBytes)
return true;
}
// return number of (partially) empty blocks back.
// return number of (completely) empty blocks back.
int
fhandler_dev_dsp::Audio_out::emptyblocks ()
{
@ -516,8 +520,6 @@ fhandler_dev_dsp::Audio_out::emptyblocks ()
n = Qisr2app_->query ();
unlock ();
n += Qapp2app_->query ();
if (pHdr_ != NULL)
n++;
return n;
}
@ -531,8 +533,8 @@ fhandler_dev_dsp::Audio_out::buf_info (audio_buf_info *p,
{
p->fragments = emptyblocks ();
if (pHdr_ != NULL)
p->bytes = p->fragsize - bufferIndex_ +
p->fragsize * (p->fragments - 1);
p->bytes = (int)pHdr_->dwUser - bufferIndex_
+ p->fragsize * p->fragments;
else
p->bytes = p->fragsize * p->fragments;
}
@ -685,7 +687,9 @@ fhandler_dev_dsp::Audio_out::parsewav (const char * &pData, int &nBytes,
const char *end = pData + nBytes;
const char *pDat;
int skip = 0;
// Check alignment first: A lot of the code below depends on it
if (((int)pData & 0x3) != 0)
return false;
if (!(pData[0] == 'R' && pData[1] == 'I'
&& pData[2] == 'F' && pData[3] == 'F'))
return false;
@ -971,6 +975,31 @@ fhandler_dev_dsp::Audio_in::waitfordata ()
bufferIndex_ = 0;
}
void
fhandler_dev_dsp::Audio_in::buf_info (audio_buf_info *p,
int rate, int bits, int channels)
{
p->fragstotal = MAX_BLOCKS;
p->fragsize = blockSize (rate, bits, channels);
if (getOwner ())
{
lock ();
p->fragments = Qisr2app_->query ();
unlock ();
p->fragments += Qapp2app_->query ();
if (pHdr_ != NULL)
p->bytes = pHdr_->dwBytesRecorded - bufferIndex_
+ p->fragsize * p->fragments;
else
p->bytes = p->fragsize * p->fragments;
}
else
{
p->fragments = 0;
p->bytes = 0;
}
}
// This is called on an interrupt so use locking..
void
fhandler_dev_dsp::Audio_in::callback_blockfull (WAVEHDR *pHdr)
@ -1214,22 +1243,12 @@ fhandler_dev_dsp::ioctl (unsigned int cmd, void *ptr)
if (audio_out_)
{
RETURN_ERROR_WHEN_BUSY (audio_out_);
audioformat_ = AFMT_U8;
audiofreq_ = 8000;
audiobits_ = 8;
audiochannels_ = 1;
audio_out_->stop ();
audio_out_->setformat (audioformat_);
audio_out_->stop (true);
}
if (audio_in_)
{
RETURN_ERROR_WHEN_BUSY (audio_in_);
audioformat_ = AFMT_U8;
audiofreq_ = 8000;
audiobits_ = 8;
audiochannels_ = 1;
audio_in_->stop ();
audio_in_->setformat (audioformat_);
}
return 0;
break;
@ -1416,6 +1435,20 @@ fhandler_dev_dsp::ioctl (unsigned int cmd, void *ptr)
}
break;
CASE (SNDCTL_DSP_GETISPACE)
{
audio_buf_info *p = (audio_buf_info *) ptr;
if (audio_in_)
{
RETURN_ERROR_WHEN_BUSY (audio_in_);
audio_in_->buf_info (p, audiofreq_, audiobits_, audiochannels_);
debug_printf ("ptr=%p frags=%d fragsize=%d bytes=%d",
ptr, p->fragments, p->fragsize, p->bytes);
}
return 0;
}
break;
CASE (SNDCTL_DSP_SETFRAGMENT)
{
// Fake!! esound & mikmod require this on non PowerPC platforms.