diff options
author | Corinna Vinschen <corinna@vinschen.de> | 2004-03-23 14:05:56 +0300 |
---|---|---|
committer | Corinna Vinschen <corinna@vinschen.de> | 2004-03-23 14:05:56 +0300 |
commit | 6653af6cc2d118f50dc8b7a37ba24d9bb9865ef6 (patch) | |
tree | 054ba40418ade238893f0fb06bba09fdb1cc96ff /winsup/cygwin/fhandler_dsp.cc | |
parent | e437499bace8b40337198b96d62a742c0678ec57 (diff) |
* autoload.cc: Load eight more functions for waveIn support.
* fhandler.h (class fhandler_dev_dsp): Add class Audio, class Audio_in
and class Audio_out members and audio_in_, audio_out_ pointers so
that future changes are restricted to file fhandler_dsp.cc.
* fhandler_dsp.cc (fhandler_dev_dsp::Audio): Add this class to treat
things common to audio recording and playback.
Add more format conversions.
(fhandler_dev_dsp::Audio::queue): New queues for buffer management
to fix incomplete cleanup of buffers passed to the wave device.
(fhandler_dev_dsp::Audio_in): New, added class to implement audio
recording.
(fhandler_dev_dsp::Audio_out): Rework to use functionality provided
by fhandler_dev_dsp::Audio. Allocate memory audio buffers late,
just before write.
(fhandler_dev_dsp::Audio_out::start): Size of wave buffer allocated
here depends on audio rate/bits/channels.
(fhandler_dev_dsp::Audio_in::start): Ditto.
(fhandler_dev_dsp::setupwav): Replaced by following function.
(fhandler_dev_dsp::Audio_out::parsewav): Does not setup wave device
any more. Discard wave header properly.
(fhandler_dev_dsp::open): Add O_RDONLY and_RDWR as legal modes.
Protect against re-open. Activate fork_fixup.
(fhandler_dev_dsp::ioctl): Protect against actions when audio is
active. SNDCTL_DSP_GETFMTS only returns formats supported by
mmsystem wave API, not all supported formats. SNDCTL_DSP_GETBLKSIZE
result now depends on current audio format.
(fhandler_dev_dsp::fixup_after_fork): Call fork_fixup for the Audio
classes to let them duplicate the CRITICAL_SECTION.
Diffstat (limited to 'winsup/cygwin/fhandler_dsp.cc')
-rw-r--r-- | winsup/cygwin/fhandler_dsp.cc | 1483 |
1 files changed, 1141 insertions, 342 deletions
diff --git a/winsup/cygwin/fhandler_dsp.cc b/winsup/cygwin/fhandler_dsp.cc index 01e1ea6ff..8791a64a3 100644 --- a/winsup/cygwin/fhandler_dsp.cc +++ b/winsup/cygwin/fhandler_dsp.cc @@ -3,6 +3,8 @@ Copyright 2001, 2002, 2003, 2004 Red Hat, Inc Written by Andy Younger (andy@snoogie.demon.co.uk) + Extended by Gerd Spalink (Gerd.Spalink@t-online.de) + to support recording from the audio input This file is part of Cygwin. @@ -20,314 +22,624 @@ details. */ #include "path.h" #include "fhandler.h" -//------------------------------------------------------------------------ -// Simple encapsulation of the win32 audio device. -// -static void CALLBACK wave_callback (HWAVE hWave, UINT msg, DWORD instance, - DWORD param1, DWORD param2); -class Audio +/*------------------------------------------------------------------------ + Simple encapsulation of the win32 audio device. + + Implementation Notes + 1. Audio buffers are created dynamically just before the first read or + write to /dev/dsp. The actual buffer size is determined at that time, + such that one buffer holds about 125ms of audio data. + At the time of this writing, 12 buffers are allocated, + so that up to 1.5 seconds can be buffered within Win32. + The buffer size can be queried with the ioctl SNDCTL_DSP_GETBLKSIZE, + but for this implementation only returns meaningful results if + sampling rate, number of channels and number of bits per sample + are not changed afterwards. + + 2. Every open call creates a new instance of the handler. To cope + with the fact that only a single wave device exists, the static + variable open_count tracks opens for one process. After a + successful open, every subsequent open from the same process + to the device fails with EBUSY. + If different processes open the audio device simultaneously, + the results are unpredictable - usually the first one wins. + + 3. The wave device is reserved within a process from the time that + the first read or write call has been successful until /dev/dsp + has been closed by that process. During this reservation period + child processes that use the same file descriptor cannot + do read, write or ioctls that change the device properties. + This means that a parent can open the device, do some ioctl, + spawn children, and any one of them can do the data read/write + */ + +class fhandler_dev_dsp::Audio +{ // This class contains functionality common to Audio_in and Audio_out + public: + Audio (); + ~Audio (); + + class queue; + + bool denyAccess (); + void fork_fixup (HANDLE parent); + inline DWORD getOwner () { return owner_; } + void setOwner () { owner_ = GetCurrentProcessId (); } + inline void clearOwner () { owner_ = 0L; } + void setformat (int format); + void convert_none (unsigned char *buffer, int size_bytes) { } + void convert_U8_S8 (unsigned char *buffer, int size_bytes); + void convert_S16LE_U16LE (unsigned char *buffer, int size_bytes); + void convert_S16LE_U16BE (unsigned char *buffer, int size_bytes); + void convert_S16LE_S16BE (unsigned char *buffer, int size_bytes); + void fillFormat (WAVEFORMATEX * format, + int rate, int bits, int channels); + unsigned blockSize (int rate, int bits, int channels); + + void (fhandler_dev_dsp::Audio::*convert_) + (unsigned char *buffer, int size_bytes); + inline void lock () { EnterCriticalSection (&lock_); } + inline void unlock () { LeaveCriticalSection (&lock_); } + private: + DWORD owner_; /* Process ID when wave operation started, else 0 */ + CRITICAL_SECTION lock_; +}; + +class fhandler_dev_dsp::Audio::queue +{ // non-blocking fixed size queues for buffer management + public: + queue (int depth = 4); + ~queue (); + + bool send (WAVEHDR *); // queue an item, returns true if successful + bool recv (WAVEHDR **); // retrieve an item, returns true if successful + int query (); // return number of items queued + + private: + int head_; + int tail_; + int depth_, depth1_; + WAVEHDR **storage_; +}; + +static void CALLBACK waveOut_callback (HWAVEOUT hWave, UINT msg, DWORD instance, + DWORD param1, DWORD param2); + +class fhandler_dev_dsp::Audio_out: public Audio +{ + public: + Audio_out (); + ~Audio_out (); + + bool query (int rate, int bits, int channels); + bool start (int rate, int bits, int channels); + void stop (); + 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); + bool parsewav (const char *&pData, int &nBytes, + int &rate, int &bits, int &channels); + + private: + void init (unsigned blockSize); + void waitforallsent (); + void waitforspace (); + bool sendcurrent (); + int emptyblocks (); + + enum { MAX_BLOCKS = 12 }; + queue *Qapp2app_; // empty and unprepared blocks + HWAVEOUT dev_; // The wave device + int bufferIndex_; // offset into pHdr_->lpData + WAVEHDR *pHdr_; // data to be filled by write + WAVEHDR wavehdr_[MAX_BLOCKS]; + char *bigwavebuffer_; // audio samples only + + // Member variables below must be locked + queue *Qisr2app_; // empty blocks passed from wave callback +}; + +static void CALLBACK waveIn_callback (HWAVEIN hWave, UINT msg, DWORD instance, + DWORD param1, DWORD param2); + +class fhandler_dev_dsp::Audio_in: public Audio { public: - enum - { - MAX_BLOCKS = 12, - BLOCK_SIZE = 16384, - TOT_BLOCK_SIZE = BLOCK_SIZE + sizeof (WAVEHDR) - }; - - Audio (); - ~Audio (); - - bool open (int rate, int bits, int channels, bool bCallback = false); - void close (); - int getvolume (); - void setvolume (int newVolume); - bool write (const void *pSampleData, int nBytes); - int blocks (); - void callback_sampledone (void *pData); - void setformat (int format) {formattype_ = format;} - int numbytesoutput (); - - void *operator new (size_t, void *p) {return p;} + Audio_in (); + ~Audio_in (); -private: - char *initialisebuffer (); - void waitforcallback (); - bool flush (); - - HWAVEOUT dev_; - volatile int nBlocksInQue_; - int nBytesWritten_; - char *buffer_; - int bufferIndex_; - CRITICAL_SECTION lock_; - char *freeblocks_[MAX_BLOCKS]; - int formattype_; + bool query (int rate, int bits, int channels); + bool start (int rate, int bits, int channels); + void stop (); + bool read (char *pSampleData, int &nBytes); + void callback_blockfull (WAVEHDR *pHdr); - char bigwavebuffer_[MAX_BLOCKS * TOT_BLOCK_SIZE]; +private: + bool init (unsigned blockSize); + bool queueblock (WAVEHDR *pHdr); + void waitfordata (); // blocks until we have a good pHdr_ + + enum { MAX_BLOCKS = 12 }; // read ahead of 1.5 seconds + queue *Qapp2app_; // filled and unprepared blocks + HWAVEIN dev_; + int bufferIndex_; // offset into pHdr_->lpData + WAVEHDR *pHdr_; // successfully recorded data + WAVEHDR wavehdr_[MAX_BLOCKS]; + char *bigwavebuffer_; // audio samples + + // Member variables below must be locked + queue *Qisr2app_; // filled blocks passed from wave callback }; -static char audio_buf[sizeof (class Audio)]; +/* -------------------------------------------------------------------- + Implementation */ + +// Simple fixed length FIFO queue implementation for audio buffer management +fhandler_dev_dsp::Audio::queue::queue (int depth) +{ + head_ = 0; + tail_ = 0; + depth_ = depth; + depth1_ = depth + 1; + // allow space for one extra object in the queue + // so we can distinguish full and empty status + storage_ = new WAVEHDR *[depth1_]; +} + +fhandler_dev_dsp::Audio::queue::~queue () +{ + delete[] storage_; +} -Audio::Audio () +bool +fhandler_dev_dsp::Audio::queue::send (WAVEHDR *x) +{ + if (query () == depth_) + return false; + storage_[tail_] = x; + tail_++; + if (tail_ == depth1_) + tail_ = 0; + return true; +} + +bool +fhandler_dev_dsp::Audio::queue::recv (WAVEHDR **x) +{ + if (query () == 0) + return false; + *x = storage_[head_]; + head_++; + if (head_ == depth1_) + head_ = 0; + return true; +} + +int +fhandler_dev_dsp::Audio::queue::query () +{ + int n = tail_ - head_; + if (n < 0) + n += depth1_; + return n; +} + +// Audio class implements functionality need for both read and write +fhandler_dev_dsp::Audio::Audio () { InitializeCriticalSection (&lock_); - memset (bigwavebuffer_, 0, sizeof (bigwavebuffer_)); - for (int i = 0; i < MAX_BLOCKS; i++) - freeblocks_[i] = &bigwavebuffer_[i * TOT_BLOCK_SIZE]; + convert_ = &fhandler_dev_dsp::Audio::convert_none; + owner_ = 0L; } -Audio::~Audio () +fhandler_dev_dsp::Audio::~Audio () { - if (dev_) - close (); DeleteCriticalSection (&lock_); } -bool -Audio::open (int rate, int bits, int channels, bool bCallback) +void +fhandler_dev_dsp::Audio::fork_fixup (HANDLE parent) { - WAVEFORMATEX format; - int nDevices = waveOutGetNumDevs (); + debug_printf ("parent=0x%08x", parent); + InitializeCriticalSection (&lock_); +} - nBytesWritten_ = 0L; - bufferIndex_ = 0; - buffer_ = 0L; - debug_printf ("number devices %d", nDevices); - if (nDevices <= 0) +bool +fhandler_dev_dsp::Audio::denyAccess () +{ + if (owner_ == 0L) return false; + return (GetCurrentProcessId () != owner_); +} - debug_printf ("trying to map device freq %d, bits %d, " - "channels %d, callback %d", rate, bits, channels, - bCallback); - - int bytesperSample = bits / 8; - - memset (&format, 0, sizeof (format)); - format.wFormatTag = WAVE_FORMAT_PCM; - format.wBitsPerSample = bits; - format.nChannels = channels; - format.nSamplesPerSec = rate; - format.nAvgBytesPerSec = format.nSamplesPerSec * format.nChannels * - bytesperSample; - format.nBlockAlign = format.nChannels * bytesperSample; - - nBlocksInQue_ = 0; - HRESULT res = waveOutOpen (&dev_, WAVE_MAPPER, &format, (DWORD) wave_callback, - (DWORD) this, bCallback ? CALLBACK_FUNCTION : 0); - if (res == S_OK) +void +fhandler_dev_dsp::Audio::setformat (int format) +{ + switch (format) { - debug_printf ("Sucessfully opened!"); - return true; + case AFMT_S8: + convert_ = &fhandler_dev_dsp::Audio::convert_U8_S8; + debug_printf ("U8_S8"); + break; + case AFMT_U16_LE: + convert_ = &fhandler_dev_dsp::Audio::convert_S16LE_U16LE; + debug_printf ("S16LE_U16LE"); + break; + case AFMT_U16_BE: + convert_ = &fhandler_dev_dsp::Audio::convert_S16LE_U16BE; + debug_printf ("S16LE_U16BE"); + break; + case AFMT_S16_BE: + convert_ = &fhandler_dev_dsp::Audio::convert_S16LE_S16BE; + debug_printf ("S16LE_S16BE"); + break; + default: + convert_ = &fhandler_dev_dsp::Audio::convert_none; + debug_printf ("none"); } - else +} + +void +fhandler_dev_dsp::Audio::convert_U8_S8 (unsigned char *buffer, + int size_bytes) +{ + while (size_bytes-- > 0) { - debug_printf ("failed to open"); - return false; + *buffer ^= (unsigned char)0x80; + buffer++; } } void -Audio::close () +fhandler_dev_dsp::Audio::convert_S16LE_U16BE (unsigned char *buffer, + int size_bytes) { - if (dev_) + int size_samples = size_bytes / 2; + unsigned char hi, lo; + while (size_samples-- > 0) { - flush (); // force out last block whatever size.. + hi = buffer[0]; + lo = buffer[1]; + *buffer++ = lo; + *buffer++ = hi ^ (unsigned char)0x80; + } +} - while (blocks ()) // block till finished.. - waitforcallback (); +void +fhandler_dev_dsp::Audio::convert_S16LE_U16LE (unsigned char *buffer, + int size_bytes) +{ + int size_samples = size_bytes / 2; + while (size_samples-- > 0) + { + buffer++; + *buffer ^= (unsigned char)0x80; + buffer++; + } +} - waveOutReset (dev_); - waveOutClose (dev_); - dev_ = 0L; +void +fhandler_dev_dsp::Audio::convert_S16LE_S16BE (unsigned char *buffer, + int size_bytes) +{ + int size_samples = size_bytes / 2; + unsigned char hi, lo; + while (size_samples-- > 0) + { + hi = buffer[0]; + lo = buffer[1]; + *buffer++ = lo; + *buffer++ = hi; } - nBytesWritten_ = 0L; } -int -Audio::numbytesoutput () +void +fhandler_dev_dsp::Audio::fillFormat (WAVEFORMATEX * format, + int rate, int bits, int channels) { - return nBytesWritten_; + memset (format, 0, sizeof (*format)); + format->wFormatTag = WAVE_FORMAT_PCM; + format->wBitsPerSample = bits; + format->nChannels = channels; + format->nSamplesPerSec = rate; + format->nAvgBytesPerSec = format->nSamplesPerSec * format->nChannels + * (bits / 8); + format->nBlockAlign = format->nChannels * (bits / 8); } -int -Audio::getvolume () +// calculate a good block size +unsigned +fhandler_dev_dsp::Audio::blockSize (int rate, int bits, int channels) { - DWORD volume; + unsigned blockSize; + blockSize = ((bits / 8) * channels * rate) / 8; // approx 125ms per block + // round up to multiple of 64 + blockSize += 0x3f; + blockSize &= ~0x3f; + return blockSize; +} - waveOutGetVolume (dev_, &volume); - return ((volume >> 16) + (volume & 0xffff)) >> 1; +//======================================================================= +fhandler_dev_dsp::Audio_out::Audio_out (): Audio () +{ + bigwavebuffer_ = NULL; + Qisr2app_ = new queue (MAX_BLOCKS); + Qapp2app_ = new queue (MAX_BLOCKS); } -void -Audio::setvolume (int newVolume) +fhandler_dev_dsp::Audio_out::~Audio_out () +{ + stop (); + delete Qapp2app_; + delete Qisr2app_; +} + +bool +fhandler_dev_dsp::Audio_out::query (int rate, int bits, int channels) { - waveOutSetVolume (dev_, (newVolume << 16) | newVolume); + WAVEFORMATEX format; + MMRESULT rc; + + fillFormat (&format, rate, bits, channels); + rc = waveOutOpen (NULL, WAVE_MAPPER, &format, 0L, 0L, WAVE_FORMAT_QUERY); + debug_printf ("freq=%d bits=%d channels=%d %s", rate, bits, channels, + (rc != MMSYSERR_NOERROR) ? "FAIL" : "OK"); + return (rc == MMSYSERR_NOERROR); +} + +bool +fhandler_dev_dsp::Audio_out::start (int rate, int bits, int channels) +{ + WAVEFORMATEX format; + MMRESULT rc; + unsigned bSize = blockSize (rate, bits, channels); + bigwavebuffer_ = new char[MAX_BLOCKS * bSize]; + if (bigwavebuffer_ == NULL) + return false; + + int nDevices = waveOutGetNumDevs (); + debug_printf ("number devices=%d, blocksize=%d", nDevices, bSize); + if (nDevices <= 0) + return false; + + fillFormat (&format, rate, bits, channels); + rc = waveOutOpen (&dev_, WAVE_MAPPER, &format, (DWORD) waveOut_callback, + (DWORD) this, CALLBACK_FUNCTION); + if (rc == MMSYSERR_NOERROR) + { + setOwner (); + init (bSize); + } + + debug_printf ("freq=%d bits=%d channels=%d %s", rate, bits, channels, + (rc != MMSYSERR_NOERROR) ? "FAIL" : "OK"); + + return (rc == MMSYSERR_NOERROR); } -char * -Audio::initialisebuffer () +void +fhandler_dev_dsp::Audio_out::stop () { - EnterCriticalSection (&lock_); - WAVEHDR *pHeader = 0L; - for (int i = 0; i < MAX_BLOCKS; i++) + MMRESULT rc; + WAVEHDR *pHdr; + bool gotblock; + + debug_printf ("dev_=%08x pid=%d owner=%d", (int)dev_, + GetCurrentProcessId (), getOwner ()); + if (getOwner () && !denyAccess ()) { - char *pData = freeblocks_[i]; - if (pData) + sendcurrent (); // force out last block whatever size.. + waitforallsent (); // block till finished.. + + rc = waveOutReset (dev_); + debug_printf ("waveOutReset rc=%d", rc); + do { - pHeader = (WAVEHDR *) pData; - if (pHeader->dwFlags & WHDR_DONE) + lock (); + gotblock = Qisr2app_->recv (&pHdr); + unlock (); + if (gotblock) { - waveOutUnprepareHeader (dev_, pHeader, sizeof (WAVEHDR)); + rc = waveOutUnprepareHeader (dev_, pHdr, sizeof (WAVEHDR)); + debug_printf ("waveOutUnprepareHeader Block 0x%08x %s", pHdr, + (rc != MMSYSERR_NOERROR) ? "FAIL" : "OK"); } - freeblocks_[i] = 0L; - break; + } + while (gotblock); + while (Qapp2app_->recv (&pHdr)) + /* flush queue */; + + rc = waveOutClose (dev_); + debug_printf ("waveOutClose rc=%d", rc); + + clearOwner (); + + if (bigwavebuffer_) + { + delete[] bigwavebuffer_; + bigwavebuffer_ = NULL; } } - LeaveCriticalSection (&lock_); +} + +void +fhandler_dev_dsp::Audio_out::init (unsigned blockSize) +{ + int i; - if (pHeader) + // internally queue all of our buffer for later use by write + for (i = 0; i < MAX_BLOCKS; i++) { - memset (pHeader, 0, sizeof (WAVEHDR)); - pHeader->dwBufferLength = BLOCK_SIZE; - pHeader->lpData = (LPSTR) (&pHeader[1]); - return (char *) pHeader->lpData; + wavehdr_[i].lpData = &bigwavebuffer_[i * blockSize]; + (int)wavehdr_[i].dwUser = blockSize; + if (!Qapp2app_->send (&wavehdr_[i])) + { + debug_printf ("Internal Error i=%d", i); + break; // should not happen + } } - return 0L; + pHdr_ = NULL; } bool -Audio::write (const void *pSampleData, int nBytes) +fhandler_dev_dsp::Audio_out::write (const char *pSampleData, int nBytes) { - // split up big blocks into smaller BLOCK_SIZE chunks - while (nBytes > BLOCK_SIZE) - { - write (pSampleData, BLOCK_SIZE); - nBytes -= BLOCK_SIZE; - pSampleData = (void *) ((char *) pSampleData + BLOCK_SIZE); + while (nBytes != 0) + { // Block if all blocks used until at least one is free + waitforspace (); + + int sizeleft = (int)pHdr_->dwUser - bufferIndex_; + if (nBytes < sizeleft) + { // all data fits into the current block, with some space left + memcpy (&pHdr_->lpData[bufferIndex_], pSampleData, nBytes); + bufferIndex_ += nBytes; + break; + } + else + { // data will fill up the current block + memcpy (&pHdr_->lpData[bufferIndex_], pSampleData, sizeleft); + bufferIndex_ += sizeleft; + sendcurrent (); + pSampleData += sizeleft; + nBytes -= sizeleft; + } } + return true; +} - // Block till next sound is flushed - if (blocks () == MAX_BLOCKS) - waitforcallback (); +// return number of (partially) empty blocks back. +int +fhandler_dev_dsp::Audio_out::emptyblocks () +{ + int n; + lock (); + n = Qisr2app_->query (); + unlock (); + n += Qapp2app_->query (); + if (pHdr_ != NULL) + n++; + return n; +} - // Allocate new wave buffer if necessary - if (buffer_ == 0L) +void +fhandler_dev_dsp::Audio_out::buf_info (audio_buf_info *p, + int rate, int bits, int channels) +{ + p->fragstotal = MAX_BLOCKS; + p->fragsize = blockSize (rate, bits, channels); + if (getOwner ()) { - buffer_ = initialisebuffer (); - if (buffer_ == 0L) - return false; + p->fragments = emptyblocks (); + if (pHdr_ != NULL) + p->bytes = p->fragsize - bufferIndex_ + + p->fragsize * (p->fragments - 1); + else + p->bytes = p->fragsize * p->fragments; } - - - // Handle gathering blocks into larger buffer - int sizeleft = BLOCK_SIZE - bufferIndex_; - if (nBytes < sizeleft) + else { - memcpy (&buffer_[bufferIndex_], pSampleData, nBytes); - bufferIndex_ += nBytes; - nBytesWritten_ += nBytes; - return true; + p->fragments = MAX_BLOCKS; + p->bytes = p->fragsize * p->fragments; } - - // flushing when we reach our limit of BLOCK_SIZE - memcpy (&buffer_[bufferIndex_], pSampleData, sizeleft); - bufferIndex_ += sizeleft; - nBytesWritten_ += sizeleft; - flush (); - - // change pointer to rest of sample, and size accordingly - pSampleData = (void *) ((char *) pSampleData + sizeleft); - nBytes -= sizeleft; - - // if we still have some sample left over write it out - if (nBytes) - return write (pSampleData, nBytes); - - return true; } -// return number of blocks back. -int -Audio::blocks () +/* This is called on an interupt so use locking.. Note Qisr2app_ + is used so we should wrap all references to it in locks. */ +void +fhandler_dev_dsp::Audio_out::callback_sampledone (WAVEHDR *pHdr) { - EnterCriticalSection (&lock_); - int ret = nBlocksInQue_; - LeaveCriticalSection (&lock_); - return ret; + lock (); + Qisr2app_->send (pHdr); + unlock (); } -// This is called on an interupt so use locking.. Note nBlocksInQue_ is -// modified by it so we should wrap all references to it in locks. void -Audio::callback_sampledone (void *pData) +fhandler_dev_dsp::Audio_out::waitforspace () { - EnterCriticalSection (&lock_); - - nBlocksInQue_--; - for (int i = 0; i < MAX_BLOCKS; i++) - if (!freeblocks_[i]) - { - freeblocks_[i] = (char *) pData; - break; - } + WAVEHDR *pHdr; + bool gotblock; + MMRESULT rc = WAVERR_STILLPLAYING; - LeaveCriticalSection (&lock_); + if (pHdr_ != NULL) + return; + while (Qapp2app_->recv (&pHdr) == false) + { + lock (); + gotblock = Qisr2app_->recv (&pHdr); + unlock (); + if (gotblock) + { + if ((pHdr->dwFlags & WHDR_DONE) + && ((rc = waveOutUnprepareHeader (dev_, pHdr, sizeof (WAVEHDR))) + == MMSYSERR_NOERROR)) + { + Qapp2app_->send (pHdr); + } + else + { + debug_printf ("error UnprepareHeader 0x%08x, rc=%d, 100ms", + pHdr, rc); + lock (); + Qisr2app_->send (pHdr); + unlock (); + Sleep (100); + } + } + else + { + debug_printf ("100ms"); + Sleep (100); + } + } + pHdr_ = pHdr; + bufferIndex_ = 0; } void -Audio::waitforcallback () +fhandler_dev_dsp::Audio_out::waitforallsent () { - int n = blocks (); - if (!n) - return; - do + while (emptyblocks () != MAX_BLOCKS) { - Sleep (250); + debug_printf ("100ms Qisr=%d Qapp=%d", + Qisr2app_->query (), Qapp2app_->query ()); + Sleep (100); } - while (n == blocks ()); } +// send the block described by pHdr_ and bufferIndex_ to wave device bool -Audio::flush () +fhandler_dev_dsp::Audio_out::sendcurrent () { - if (!buffer_) + WAVEHDR *pHdr = pHdr_; + if (pHdr_ == NULL) return false; + pHdr_ = NULL; - // Send internal buffer out to the soundcard - WAVEHDR *pHeader = ((WAVEHDR *) buffer_) - 1; - pHeader->dwBufferLength = bufferIndex_; + // Sample buffer conversion + (this->*convert_) ((unsigned char *)pHdr->lpData, bufferIndex_); - // Quick bit of sample buffer conversion - if (formattype_ == AFMT_S8) + // Send internal buffer out to the soundcard + pHdr->dwBufferLength = bufferIndex_; + pHdr->dwFlags = 0; + if (waveOutPrepareHeader (dev_, pHdr, sizeof (WAVEHDR)) == MMSYSERR_NOERROR) { - unsigned char *p = ((unsigned char *) buffer_); - for (int i = 0; i < bufferIndex_; i++) + if (waveOutWrite (dev_, pHdr, sizeof (WAVEHDR)) == MMSYSERR_NOERROR) { - p[i] -= 0x7f; + debug_printf ("waveOutWrite bytes=%d", bufferIndex_); + return true; + } + else + { + debug_printf ("waveOutWrite failed"); + lock (); + Qisr2app_->send (pHdr); + unlock (); } - } - - if (waveOutPrepareHeader (dev_, pHeader, sizeof (WAVEHDR)) == S_OK && - waveOutWrite (dev_, pHeader, sizeof (WAVEHDR)) == S_OK) - { - EnterCriticalSection (&lock_); - nBlocksInQue_++; - LeaveCriticalSection (&lock_); - bufferIndex_ = 0; - buffer_ = 0L; - return true; } else { - EnterCriticalSection (&lock_); - for (int i = 0; i < MAX_BLOCKS; i++) - if (!freeblocks_[i]) - { - freeblocks_[i] = (char *) pHeader; - break; - } - LeaveCriticalSection (&lock_); + debug_printf ("waveOutPrepareHeader failed"); + Qapp2app_->send (pHdr); } return false; } @@ -335,21 +647,18 @@ Audio::flush () //------------------------------------------------------------------------ // Call back routine static void CALLBACK -wave_callback (HWAVE hWave, UINT msg, DWORD instance, DWORD param1, - DWORD param2) +waveOut_callback (HWAVEOUT hWave, UINT msg, DWORD instance, DWORD param1, + DWORD param2) { if (msg == WOM_DONE) { - Audio *ptr = (Audio *) instance; - ptr->callback_sampledone ((void *) param1); + fhandler_dev_dsp::Audio_out *ptr = + (fhandler_dev_dsp::Audio_out *) instance; + ptr->callback_sampledone ((WAVEHDR *) param1); } } //------------------------------------------------------------------------ -// /dev/dsp handler -static Audio *s_audio; // static instance of the Audio handler - -//------------------------------------------------------------------------ // wav file detection.. #pragma pack(1) struct wavchunk @@ -369,121 +678,482 @@ struct wavformat #pragma pack() bool -fhandler_dev_dsp::setupwav (const char *pData, int nBytes) +fhandler_dev_dsp::Audio_out::parsewav (const char * &pData, int &nBytes, + int &rate, int &bits, int &channels) { int len; const char *end = pData + nBytes; - - if (!(pData[0] == 'R' && pData[1] == 'I' && - pData[2] == 'F' && pData[3] == 'F')) + const char *pDat; + int skip = 0; + + if (!(pData[0] == 'R' && pData[1] == 'I' + && pData[2] == 'F' && pData[3] == 'F')) return false; - if (!(pData[8] == 'W' && pData[9] == 'A' && - pData[10] == 'V' && pData[11] == 'E')) + if (!(pData[8] == 'W' && pData[9] == 'A' + && pData[10] == 'V' && pData[11] == 'E')) return false; len = *(int *) &pData[4]; - pData += 12; - while (len && pData < end) - { - wavchunk * pChunk = (wavchunk *) pData; + len -= 12; + pDat = pData + 12; + skip = 12; + while ((len > 0) && (pDat + sizeof (wavchunk) < end)) + { /* We recognize two kinds of wavchunk: + "fmt " for the PCM parameters (only PCM supported here) + "data" for the start of PCM data */ + wavchunk * pChunk = (wavchunk *) pDat; int blklen = pChunk-> len; - if (pChunk->id[0] == 'f' && pChunk->id[1] == 'm' && - pChunk->id[2] == 't' && pChunk->id[3] == ' ') + if (pChunk->id[0] == 'f' && pChunk->id[1] == 'm' + && pChunk->id[2] == 't' && pChunk->id[3] == ' ') { wavformat *format = (wavformat *) (pChunk + 1); - if ((char *) (format + 1) > end) + if ((char *) (format + 1) >= end) return false; + // We have found the parameter chunk + if (format->wFormatTag == 0x0001) + { // Micr*s*ft PCM; check if parameters work with our device + if (query (format->dwSamplesPerSec, format->wBitsPerSample, + format->wChannels)) + { // return the parameters we found + rate = format->dwSamplesPerSec; + bits = format->wBitsPerSample; + channels = format->wChannels; + } + } + } + else + { + if (pChunk->id[0] == 'd' && pChunk->id[1] == 'a' + && pChunk->id[2] == 't' && pChunk->id[3] == 'a') + { // throw away all the header & not output it to the soundcard. + skip += sizeof (wavchunk); + debug_printf ("Discard %d bytes wave header", skip); + pData += skip; + nBytes -= skip; + return true; + } + } + pDat += blklen + sizeof (wavchunk); + skip += blklen + sizeof (wavchunk); + len -= blklen + sizeof (wavchunk); + } + return false; +} + +/* ======================================================================== + Buffering concept for Audio_in: + On the first read, we queue all blocks of our bigwavebuffer + for reception and start the wave-in device. + We manage queues of pointers to WAVEHDR + When a block has been filled, the callback puts the corresponding + WAVEHDR pointer into a queue. We need a second queue to distinguish + blocks with data from blocks that have been unprepared and are ready + to be used by read(). + The function read() blocks (polled, sigh) until at least one good buffer + has arrived, then the data is copied into the buffer provided to read(). + After a buffer has been fully used by read(), it is queued again + to the wave-in device immediately. + The function read() iterates until all data requested has been + received, there is no way to interrupt it */ + +fhandler_dev_dsp::Audio_in::Audio_in () : Audio () +{ + bigwavebuffer_ = NULL; + Qisr2app_ = new queue (MAX_BLOCKS); + Qapp2app_ = new queue (MAX_BLOCKS); +} - // Open up audio device with correct frequency for wav file - // - // FIXME: should through away all the header & not output - // it to the soundcard. - s_audio->close (); - if (s_audio->open (format->dwSamplesPerSec, format->wBitsPerSample, - format->wChannels) == false) +fhandler_dev_dsp::Audio_in::~Audio_in () +{ + stop (); + delete Qapp2app_; + delete Qisr2app_; +} + +bool +fhandler_dev_dsp::Audio_in::query (int rate, int bits, int channels) +{ + WAVEFORMATEX format; + MMRESULT rc; + + fillFormat (&format, rate, bits, channels); + rc = waveInOpen (NULL, WAVE_MAPPER, &format, 0L, 0L, WAVE_FORMAT_QUERY); + debug_printf ("freq=%d bits=%d channels=%d %s", rate, bits, channels, + (rc != MMSYSERR_NOERROR) ? "FAIL" : "OK"); + return (rc == MMSYSERR_NOERROR); +} + +bool +fhandler_dev_dsp::Audio_in::start (int rate, int bits, int channels) +{ + WAVEFORMATEX format; + MMRESULT rc; + unsigned bSize = blockSize (rate, bits, channels); + bigwavebuffer_ = new char[MAX_BLOCKS * bSize]; + if (bigwavebuffer_ == NULL) + return false; + + int nDevices = waveInGetNumDevs (); + debug_printf ("number devices=%d, blocksize=%d", nDevices, bSize); + if (nDevices <= 0) + return false; + + fillFormat (&format, rate, bits, channels); + rc = waveInOpen (&dev_, WAVE_MAPPER, &format, (DWORD) waveIn_callback, + (DWORD) this, CALLBACK_FUNCTION); + if (rc == MMSYSERR_NOERROR) + { + setOwner (); + if (!init (bSize)) + { + stop (); + return false; + } + } + + debug_printf ("freq=%d bits=%d channels=%d %s", rate, bits, channels, + (rc != MMSYSERR_NOERROR) ? "FAIL" : "OK"); + + return (rc == MMSYSERR_NOERROR); +} + +void +fhandler_dev_dsp::Audio_in::stop () +{ + MMRESULT rc; + WAVEHDR *pHdr; + bool gotblock; + + debug_printf ("dev_=%08x pid=%d owner=%d", (int)dev_, + GetCurrentProcessId (), getOwner ()); + if (getOwner () && !denyAccess ()) + { + rc = waveInReset (dev_); + /* Note that waveInReset calls our callback for all incomplete buffers. + Since all the win32 wave functions appear to use a common lock, + we must not call into the wave API from the callback. + Otherwise we end up in a deadlock. */ + debug_printf ("waveInReset rc=%d", rc); + + do + { + lock (); + gotblock = Qisr2app_->recv (&pHdr); + unlock (); + if (gotblock) { - s_audio->open (audiofreq_, audiobits_, audiochannels_); + rc = waveInUnprepareHeader (dev_, pHdr, sizeof (WAVEHDR)); + debug_printf ("waveInUnprepareHeader Block 0x%08x %s", pHdr, + (rc != MMSYSERR_NOERROR) ? "FAIL" : "OK"); } - else - { - audiofreq_ = format->dwSamplesPerSec; - audiobits_ = format->wBitsPerSample; - audiochannels_ = format->wChannels; + } + while (gotblock); + while (Qapp2app_->recv (&pHdr)) + /* flush queue */; + + rc = waveInClose (dev_); + debug_printf ("waveInClose rc=%d", rc); + + clearOwner (); + + if (bigwavebuffer_) + { + delete[] bigwavebuffer_; + bigwavebuffer_ = NULL; + } + } +} + +bool +fhandler_dev_dsp::Audio_in::queueblock (WAVEHDR *pHdr) +{ + MMRESULT rc; + pHdr->dwFlags = 0; + rc = waveInPrepareHeader (dev_, pHdr, sizeof (WAVEHDR)); + if (rc == MMSYSERR_NOERROR) + rc = waveInAddBuffer (dev_, pHdr, sizeof (WAVEHDR)); + debug_printf ("waveInAddBuffer Block 0x%08x %s", pHdr, + (rc != MMSYSERR_NOERROR) ? "FAIL" : "OK"); + return (rc == MMSYSERR_NOERROR); +} + +bool +fhandler_dev_dsp::Audio_in::init (unsigned blockSize) +{ + MMRESULT rc; + int i; + + // try to queue all of our buffer for reception + for (i = 0; i < MAX_BLOCKS; i++) + { + wavehdr_[i].lpData = &bigwavebuffer_[i * blockSize]; + wavehdr_[i].dwBufferLength = blockSize; + if (!queueblock (&wavehdr_[i])) + break; + } + pHdr_ = NULL; + rc = waveInStart (dev_); + debug_printf ("waveInStart=%d %s queued=%d", + rc, (rc != MMSYSERR_NOERROR) ? "FAIL" : "OK", i); + return (rc == MMSYSERR_NOERROR); +} + +bool +fhandler_dev_dsp::Audio_in::read (char *pSampleData, int &nBytes) +{ + int bytes_to_read = nBytes; + nBytes = 0; + debug_printf ("pSampleData=%08x nBytes=%d", pSampleData, bytes_to_read); + while (bytes_to_read != 0) + { // Block till next sound has been read + waitfordata (); + + // Handle gathering our blocks into smaller or larger buffer + int sizeleft = pHdr_->dwBytesRecorded - bufferIndex_; + if (bytes_to_read < sizeleft) + { // The current buffer holds more data than requested + memcpy (pSampleData, &pHdr_->lpData[bufferIndex_], bytes_to_read); + (this->*convert_) ((unsigned char *)pSampleData, bytes_to_read); + nBytes += bytes_to_read; + bufferIndex_ += bytes_to_read; + debug_printf ("got %d", bytes_to_read); + break; // done; use remaining data in next call to read + } + else + { // not enough or exact amount in the current buffer + if (sizeleft) + { // use up what we have + memcpy (pSampleData, &pHdr_->lpData[bufferIndex_], sizeleft); + (this->*convert_) ((unsigned char *)pSampleData, sizeleft); + nBytes += sizeleft; + bytes_to_read -= sizeleft; + pSampleData += sizeleft; + debug_printf ("got %d", sizeleft); } - return true; + queueblock (pHdr_); // re-queue this block to ISR + pHdr_ = NULL; // need to wait for a new block + // if more samples are needed, we need a new block now + } + } + debug_printf ("end nBytes=%d", nBytes); + return true; +} + +void +fhandler_dev_dsp::Audio_in::waitfordata () +{ + WAVEHDR *pHdr; + bool gotblock; + MMRESULT rc; + + if (pHdr_ != NULL) + return; + while (Qapp2app_->recv (&pHdr) == false) + { + lock (); + gotblock = Qisr2app_->recv (&pHdr); + unlock (); + if (gotblock) + { + rc = waveInUnprepareHeader (dev_, pHdr, sizeof (WAVEHDR)); + if (rc == MMSYSERR_NOERROR) + Qapp2app_->send (pHdr); + else + debug_printf ("error UnprepareHeader 0x%08x", pHdr); + } + else + { + debug_printf ("100ms"); + Sleep (100); } + } + pHdr_ = pHdr; + bufferIndex_ = 0; +} - pData += blklen + sizeof (wavchunk); +// This is called on an interrupt so use locking.. +void +fhandler_dev_dsp::Audio_in::callback_blockfull (WAVEHDR *pHdr) +{ + lock (); + Qisr2app_->send (pHdr); + unlock (); +} + +static void CALLBACK +waveIn_callback (HWAVEIN hWave, UINT msg, DWORD instance, DWORD param1, + DWORD param2) +{ + if (msg == WIM_DATA) + { + fhandler_dev_dsp::Audio_in *ptr = + (fhandler_dev_dsp::Audio_in *) instance; + ptr->callback_blockfull ((WAVEHDR *) param1); } - return false; } -//------------------------------------------------------------------------ + +/* ------------------------------------------------------------------------ + /dev/dsp handler + ------------------------------------------------------------------------ + instances of the handler statics */ +int fhandler_dev_dsp::open_count = 0; + fhandler_dev_dsp::fhandler_dev_dsp (): fhandler_base () { + debug_printf ("0x%08x", (int)this); + audio_in_ = NULL; + audio_out_ = NULL; } fhandler_dev_dsp::~fhandler_dev_dsp () { + close (); + debug_printf ("0x%08x end", (int)this); } int fhandler_dev_dsp::open (int flags, mode_t mode) { - // currently we only support writing - if ((flags & (O_WRONLY | O_RDONLY | O_RDWR)) != O_WRONLY) + open_count++; + if (open_count > 1) { - set_errno (EACCES); + set_errno (EBUSY); return 0; } - set_flags ((flags & ~O_TEXT) | O_BINARY); - - if (!s_audio) - s_audio = new (audio_buf) Audio; - - // Work out initial sample format & frequency - // dev/dsp defaults - audioformat_ = AFMT_S8; + // Work out initial sample format & frequency, /dev/dsp defaults + audioformat_ = AFMT_U8; audiofreq_ = 8000; audiobits_ = 8; audiochannels_ = 1; - - int res; - if (!s_audio->open (audiofreq_, audiobits_, audiochannels_)) - res = 0; - else + switch (flags & O_ACCMODE) { + case O_WRONLY: + audio_out_ = new Audio_out; + if (!audio_out_->query (audiofreq_, audiobits_, audiochannels_)) + { + delete audio_out_; + audio_out_ = NULL; + } + break; + case O_RDONLY: + audio_in_ = new Audio_in; + if (!audio_in_->query (audiofreq_, audiobits_, audiochannels_)) + { + delete audio_in_; + audio_in_ = NULL; + } + break; + case O_RDWR: + audio_out_ = new Audio_out; + if (audio_out_->query (audiofreq_, audiobits_, audiochannels_)) + { + audio_in_ = new Audio_in; + if (!audio_in_->query (audiofreq_, audiobits_, audiochannels_)) + { + delete audio_in_; + audio_in_ = NULL; + audio_out_->stop (); + delete audio_out_; + audio_out_ = NULL; + } + } + else + { + delete audio_out_; + audio_out_ = NULL; + } + break; + default: + set_errno (EINVAL); + return 0; + } // switch (flags & O_ACCMODE) + int rc; + if (audio_in_ || audio_out_) + { /* All tried query () succeeded */ + rc = 1; set_open_status (); - res = 1; + set_need_fork_fixup (); + set_close_on_exec_flag (1); } - - debug_printf ("returns %d", res); - return res; + else + { /* One of the tried query () failed */ + rc = 0; + set_errno (EIO); + } + debug_printf ("ACCMODE=0x%08x audio_in=%08x audio_out=%08x, rc=%d", + flags & O_ACCMODE, (int)audio_in_, (int)audio_out_, rc); + return rc; } +#define RETURN_ERROR_WHEN_BUSY(audio)\ + if ((audio)->denyAccess ()) \ + {\ + set_errno (EBUSY);\ + return -1;\ + } + int fhandler_dev_dsp::write (const void *ptr, size_t len) { - if (s_audio->numbytesoutput () == 0) + int len_s = len; + debug_printf ("ptr=%08x len=%d", ptr, len); + if (!audio_out_) { - // check for wave file & setup frequencys properly if possible. - setupwav ((const char *) ptr, len); - + set_errno (EACCES); // device was opened for read? + return -1; + } + RETURN_ERROR_WHEN_BUSY (audio_out_); + if (audio_out_->getOwner () == 0L) + { // No owner yet, lets do it + // check for wave file & get parameters & skip header if possible. + if (audio_out_->parsewav ((const char *) ptr, len_s, + audiofreq_, audiobits_, audiochannels_)) + { // update our format conversion + audioformat_ = ((audiobits_ == 8) ? AFMT_U8 : AFMT_S16_LE); + audio_out_->setformat (audioformat_); + } // Open audio device properly with callbacks. - s_audio->close (); - if (!s_audio->open (audiofreq_, audiobits_, audiochannels_, true)) - return 0; + if (!audio_out_->start (audiofreq_, audiobits_, audiochannels_)) + { + set_errno (EIO); + return -1; + } } - s_audio->write (ptr, len); + audio_out_->write ((char *)ptr, len_s); return len; } void __stdcall fhandler_dev_dsp::read (void *ptr, size_t& len) { + debug_printf ("ptr=%08x len=%d", ptr, len); + if (!audio_in_) + { + len = (size_t)-1; + set_errno (EACCES); // device was opened for write? + return; + } + if (audio_in_->denyAccess ()) + { + len = (size_t)-1; + set_errno (EBUSY); + return; + } + if (audio_in_->getOwner () == 0L) + { // No owner yet. Let's take it + // Open audio device properly with callbacks. + if (!audio_in_->start (audiofreq_, audiobits_, audiochannels_)) + { + len = (size_t)-1; + set_errno (EIO); + return; + } + } + audio_in_->read ((char *)ptr, (int&)len); return; } @@ -496,13 +1166,27 @@ fhandler_dev_dsp::lseek (_off64_t offset, int whence) int fhandler_dev_dsp::close (void) { - s_audio->close (); + debug_printf ("audio_in=%08x audio_out=%08x", + (int)audio_in_, (int)audio_out_); + if (audio_in_) + { + delete audio_in_; + audio_in_ = NULL; + } + if (audio_out_) + { + delete audio_out_; + audio_out_ = NULL; + } + if (open_count > 0) + open_count--; return 0; } int fhandler_dev_dsp::dup (fhandler_base * child) { + debug_printf (""); fhandler_dev_dsp *fhc = (fhandler_dev_dsp *) child; fhc->set_flags (get_flags ()); @@ -517,100 +1201,182 @@ int fhandler_dev_dsp::ioctl (unsigned int cmd, void *ptr) { int *intptr = (int *) ptr; + debug_printf ("audio_in=%08x audio_out=%08x", + (int)audio_in_, (int)audio_out_); switch (cmd) { -#define CASE(a) case a : debug_printf("/dev/dsp: ioctl %s", #a); +#define CASE(a) case a : debug_printf ("/dev/dsp: ioctl %s", #a); CASE (SNDCTL_DSP_RESET) - audioformat_ = AFMT_S8; - audiofreq_ = 8000; - audiobits_ = 8; - audiochannels_ = 1; + 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_); + } + 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; CASE (SNDCTL_DSP_GETBLKSIZE) - *intptr = Audio::BLOCK_SIZE; + if (audio_out_) + { + *intptr = audio_out_->blockSize (audiofreq_, + audiobits_, + audiochannels_); + } + else + { // I am very sure that audio_in_ is valid + *intptr = audio_in_->blockSize (audiofreq_, + audiobits_, + audiochannels_); + } return 0; + break; CASE (SNDCTL_DSP_SETFMT) { - 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) + int nBits; + switch (*intptr) + { + case AFMT_QUERY: + *intptr = audioformat_; + return 0; + break; + case AFMT_U16_BE: + case AFMT_U16_LE: + case AFMT_S16_BE: + case AFMT_S16_LE: + nBits = 16; + break; + case AFMT_U8: + case AFMT_S8: + nBits = 8; + break; + default: + nBits = 0; + } + if (nBits && audio_out_) { - s_audio->setformat (*intptr); - s_audio->close (); - if (s_audio->open (audiofreq_, nBits, audiochannels_) == true) + RETURN_ERROR_WHEN_BUSY (audio_out_); + audio_out_->stop (); + audio_out_->setformat (*intptr); + if (audio_out_->query (audiofreq_, nBits, audiochannels_)) { audiobits_ = nBits; - return 0; + audioformat_ = *intptr; } else { - s_audio->open (audiofreq_, audiobits_, audiochannels_); + *intptr = audiobits_; return -1; } } + if (nBits && audio_in_) + { + RETURN_ERROR_WHEN_BUSY (audio_in_); + audio_in_->stop (); + audio_in_->setformat (*intptr); + if (audio_in_->query (audiofreq_, nBits, audiochannels_)) + { + audiobits_ = nBits; + audioformat_ = *intptr; + } + else + { + *intptr = audiobits_; + return -1; + } + } + return 0; } break; CASE (SNDCTL_DSP_SPEED) - s_audio->close (); - if (s_audio->open (*intptr, audiobits_, audiochannels_) == true) - { - audiofreq_ = *intptr; - return 0; + { + if (audio_out_) + { + RETURN_ERROR_WHEN_BUSY (audio_out_); + audio_out_->stop (); + if (audio_out_->query (*intptr, audiobits_, audiochannels_)) + audiofreq_ = *intptr; + else + { + *intptr = audiofreq_; + return -1; + } } - else + if (audio_in_) { - s_audio->open (audiofreq_, audiobits_, audiochannels_); - return -1; + RETURN_ERROR_WHEN_BUSY (audio_in_); + audio_in_->stop (); + if (audio_in_->query (*intptr, audiobits_, audiochannels_)) + audiofreq_ = *intptr; + else + { + *intptr = audiofreq_; + return -1; + } } - break; + return 0; + } + break; CASE (SNDCTL_DSP_STEREO) { int nChannels = *intptr + 1; - s_audio->close (); - if (s_audio->open (audiofreq_, audiobits_, nChannels) == true) - { - audiochannels_ = nChannels; - return 0; + if (audio_out_) + { + RETURN_ERROR_WHEN_BUSY (audio_out_); + audio_out_->stop (); + if (audio_out_->query (audiofreq_, audiobits_, nChannels)) + audiochannels_ = nChannels; + else + { + *intptr = audiochannels_ - 1; + return -1; + } } - else + if (audio_in_) { - s_audio->open (audiofreq_, audiobits_, audiochannels_); - return -1; + RETURN_ERROR_WHEN_BUSY (audio_in_); + audio_in_->stop (); + if (audio_in_->query (audiofreq_, audiobits_, nChannels)) + audiochannels_ = nChannels; + else + { + *intptr = audiochannels_ - 1; + return -1; + } } + return 0; } break; CASE (SNDCTL_DSP_GETOSPACE) { audio_buf_info *p = (audio_buf_info *) ptr; - - int nBlocks = s_audio->blocks (); - int leftblocks = ((Audio::MAX_BLOCKS - nBlocks) - 1); - if (leftblocks < 0) - leftblocks = 0; - if (leftblocks > 1) - leftblocks = 1; - int left = leftblocks * Audio::BLOCK_SIZE; - - p->fragments = leftblocks; - p->fragstotal = Audio::MAX_BLOCKS; - p->fragsize = Audio::BLOCK_SIZE; - p->bytes = left; - - debug_printf ("ptr %p nblocks %d leftblocks %d left bytes %d ", - ptr, nBlocks, leftblocks, left); - + if (audio_out_) + { + RETURN_ERROR_WHEN_BUSY (audio_out_); + audio_out_->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; @@ -625,29 +1391,62 @@ fhandler_dev_dsp::ioctl (unsigned int cmd, void *ptr) CASE (SNDCTL_DSP_GETFMTS) { - *intptr = AFMT_S16_LE | AFMT_U8 | AFMT_S8; // more? + *intptr = AFMT_S16_LE | AFMT_U8; // only native formats returned here + return 0; + } + break; + + CASE (SNDCTL_DSP_POST) + CASE (SNDCTL_DSP_SYNC) + { + if (audio_out_) + { + // Stop audio out device + RETURN_ERROR_WHEN_BUSY (audio_out_); + audio_out_->stop (); + } + if (audio_in_) + { + // Stop audio in device + RETURN_ERROR_WHEN_BUSY (audio_in_); + audio_in_->stop (); + } return 0; } break; default: - debug_printf ("/dev/dsp: ioctl not handled yet! FIXME:"); + debug_printf ("/dev/dsp: ioctl 0x%08x not handled yet! FIXME:", cmd); break; #undef CASE }; + set_errno (EINVAL); return -1; } void fhandler_dev_dsp::dump () { - paranoid_printf ("here, fhandler_dev_dsp"); + paranoid_printf ("here"); +} + +void +fhandler_dev_dsp::fixup_after_fork (HANDLE parent) +{ // called from new child process + debug_printf ("audio_in=%08x audio_out=%08x", + (int)audio_in_, (int)audio_out_); + if (audio_in_ ) + audio_in_ ->fork_fixup (parent); + if (audio_out_) + audio_out_->fork_fixup (parent); } void fhandler_dev_dsp::fixup_after_exec () { - /* FIXME: Is there a better way to do this? */ - s_audio = new (audio_buf) Audio; + debug_printf ("audio_in=%08x audio_out=%08x", + (int)audio_in_, (int)audio_out_); } + + |