diff options
Diffstat (limited to 'winsup/cygwin/fhandler_dsp.cc')
| -rw-r--r-- | winsup/cygwin/fhandler_dsp.cc | 32 |
1 files changed, 21 insertions, 11 deletions
diff --git a/winsup/cygwin/fhandler_dsp.cc b/winsup/cygwin/fhandler_dsp.cc index c6d96c4e6..91049ae04 100644 --- a/winsup/cygwin/fhandler_dsp.cc +++ b/winsup/cygwin/fhandler_dsp.cc @@ -28,7 +28,12 @@ static void CALLBACK wave_callback (HWAVE hWave, UINT msg, DWORD instance, class Audio { public: - enum { MAX_BLOCKS = 12, BLOCK_SIZE = 16384 }; + enum + { + MAX_BLOCKS = 12, + BLOCK_SIZE = 16384, + TOT_BLOCK_SIZE = BLOCK_SIZE + sizeof (WAVEHDR) + }; Audio (); ~Audio (); @@ -43,6 +48,8 @@ public: void setformat (int format) {formattype_ = format;} int numbytesoutput (); + void *operator new (size_t, void *p) {return p;} + private: char *initialisebuffer (); void waitforcallback (); @@ -57,21 +64,17 @@ private: char *freeblocks_[MAX_BLOCKS]; int formattype_; - char bigwavebuffer_[MAX_BLOCKS * BLOCK_SIZE]; + char bigwavebuffer_[MAX_BLOCKS * TOT_BLOCK_SIZE]; }; +static char audio_buf[sizeof (class Audio)]; + Audio::Audio () { - int size = BLOCK_SIZE + sizeof (WAVEHDR); - InitializeCriticalSection (&lock_); - memset (freeblocks_, 0, sizeof (freeblocks_)); + memset (bigwavebuffer_, 0, sizeof (bigwavebuffer_)); for (int i = 0; i < MAX_BLOCKS; i++) - { - char *pBuffer = &bigwavebuffer_[i * size]; - memset (pBuffer, 0, size); - freeblocks_[i] = pBuffer; - } + freeblocks_[i] = &bigwavebuffer_[i * TOT_BLOCK_SIZE]; } Audio::~Audio () @@ -436,7 +439,7 @@ fhandler_dev_dsp::open (const char *path, int flags, mode_t mode = 0) set_flags (flags); if (!s_audio) - s_audio = new Audio; + s_audio = new (audio_buf) Audio; // Work out initial sample format & frequency if (strcmp (path, "/dev/dsp") == 0L) @@ -632,3 +635,10 @@ fhandler_dev_dsp::dump () { paranoid_printf ("here, fhandler_dev_dsp"); } + +void +fhandler_dev_dsp::fixup_after_exec (HANDLE) +{ + /* FIXME: Is there a better way to do this? */ + s_audio = new (audio_buf) Audio; +} |