void MmeGrabber::shutdown()
{
MMRESULT s;
/* fprintf(stderr, "vic: Called MmeGrabber::shutdown\n"); */
if (!running_)
return;
wantgrab_ = 0;
running_ = 0;
s = videoStreamReset(handle_);
(void)mme_error(s, "couldn't reset mme stream");
while(outstanding_) {
mmeWaitForCallbacks();
mmeProcessCallbacks();
}
s = videoStreamUnprepareHeader(handle_, vh_, sizeof(*vh_));
(void)mme_error(s, "couldn't unprepare mme video header");
s = videoStreamFini(handle_);
(void)mme_error(s, "couldn't shutdown mme stream");
running_ = 0;
mmeFreeBuffer(vh_->lpData);
}
static void MME_WaitAudio(_THIS)
{
while ( inUse[next_buffer] ) {
mmeWaitForCallbacks();
mmeProcessCallbacks();
}
}
static void
MME_WaitDevice(_THIS)
{
while (inUse[this->hidden->next_buffer]) {
mmeWaitForCallbacks();
mmeProcessCallbacks();
}
}
static void MME_WaitDone(_THIS)
{
MMRESULT result;
int i;
if ( shm->sound ) {
for (i = 0; i < NUM_BUFFERS; i++)
while ( inUse[i] ) {
mmeWaitForCallbacks();
mmeProcessCallbacks();
}
result = waveOutReset(shm->sound);
if ( result != MMSYSERR_NOERROR )
SetMMerror("waveOutReset()", result);
mmeProcessCallbacks();
}
}
void play_sound_mmov( char* FileName , int verbose )
{
HWAVEOUT hwaveout;
MMRESULT status;
int mask1;
int allDone;
static int uDeviceId = WAVE_MAPPER;
static int AdpcmBitsPerSample = 16;
static int AdpcmSamplesPerBlock = 0;
static int sizeBuffers = 0;
static int msBuffers = 0;
static int numBuffers = 4;
static struct mmov_soundformat sound_format =
{
{
DEFAULT_ENCODING,
DEFAULT_NCHANNELS,
DEFAULT_SAMPLERATE,
0,
0,
DEFAULT_SAMPLESIZE,
NUM_DATA
}, {
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0
}
};
Verbose = verbose;
play_state = MMOV_START;
/* Open the Wave In file */
if (mmcWaveInFileOpen (FileName, &sound_format.wave, &wavefilestatus) != 0)
{
mmcVerboseDisplay(Verbose,"Error opening input file");
mmov_cleanup();
return;
}
if ( sound_format.wave.wFormatTag == WAVE_FORMAT_PCM)
mmcVerboseDisplay(Verbose,"PCM file");
else if ( sound_format.wave.wFormatTag == WAVE_FORMAT_MULAW)
mmcVerboseDisplay(Verbose,"mu-law file");
else if ( sound_format.wave.wFormatTag == WAVE_FORMAT_IMA_ADPCM)
mmcVerboseDisplay(Verbose,"IMA file");
else
mmcVerboseDisplay(Verbose,"Unknown sound format %d",
sound_format.wave.wFormatTag);
mmcVerboseDisplay(Verbose,"Channels = %d ", sound_format.wave.nChannels );
mmcVerboseDisplay(Verbose,"Sample rate = %d",
sound_format.wave.nSamplesPerSec);
mmcVerboseDisplay(Verbose,
"Sample size = %d", sound_format.wave.wBitsPerSample );
if( sound_format.wave.nChannels == 0)
sound_format.wave.nChannels = DEFAULT_NCHANNELS;
if( sound_format.wave.nSamplesPerSec == 0)
sound_format.wave.nSamplesPerSec = DEFAULT_SAMPLERATE;
if( sound_format.wave.wBitsPerSample == 0)
sound_format.wave.wBitsPerSample = DEFAULT_SAMPLESIZE;
if ( sound_format.wave.wFormatTag == WAVE_FORMAT_IMA_ADPCM ) {
AdpcmSamplesPerBlock = *(Uint16 *)(&sound_format.extra_data[0]);
}
if ( ( sound_format.wave.wFormatTag == WAVE_FORMAT_PCM) ||
( sound_format.wave.wFormatTag == WAVE_FORMAT_MULAW) ) {
mask1 = WAVE_FORMAT_FIX_BLOCK_ALIGN | WAVE_FORMAT_FIX_AVG_BPS;
mmcWaveFormatFix((LPPCMWAVEFORMAT)(&sound_format), mask1 );
}
if ( sound_format.wave.wFormatTag == WAVE_FORMAT_IMA_ADPCM) {
sizeBuffers = sound_format.wave.nBlockAlign;
msBuffers = sizeBuffers * 1000 /
(DIV_ROUND_UP_(AdpcmBitsPerSample,8) *
sound_format.wave.nSamplesPerSec *
sound_format.wave.nChannels);
} else {
if (!msBuffers && !sizeBuffers)
msBuffers = 1000/numBuffers;
if (msBuffers)
sizeBuffers =
ROUND_UP_(DIV_ROUND_UP_(msBuffers *
DIV_ROUND_UP_( sound_format.wave.wBitsPerSample,
8) *
sound_format.wave.nSamplesPerSec *
sound_format.wave.nChannels,1000), BUFFER_PAD);
else
{
sizeBuffers = ROUND_UP_(sizeBuffers, BUFFER_PAD);
msBuffers = sizeBuffers * 1000 /
(DIV_ROUND_UP_( sound_format.wave.wBitsPerSample,8) *
sound_format.wave.nSamplesPerSec *
sound_format.wave.nChannels);
}
}
mmcVerboseDisplay(Verbose, "Buffer size = %d bytes or %d milliseconds",
sizeBuffers, msBuffers);
hwaveout = NULL;
status = mmcWaveOutOpen(&sound_format.wave, uDeviceId, &mmov_driver ,
WAVE_OPEN_SHAREABLE, &hwaveout);
if (status != MMSYSERR_NOERROR)
{
mmov_cleanup();
return;
}
if (mmcBuffersCreate (&mmov_buffer, numBuffers, sizeBuffers, BUFFER_PAD)
!= MMSYSERR_NOERROR)
{
mmov_cleanup();
return;
}
for (;;)
{
switch ( play_state )
{
case MMOV_START:
break;
case MMOV_PLAY:
status = mmcWaveOutQueueBufferAll (hwaveout, &mmov_buffer, Verbose,
&wavefilestatus, &allDone);
if (allDone)
play_state = MMOV_WAITING;
else
{
if (status != MMSYSERR_NOERROR)
{
mmov_cleanup();
return;
}
}
break;
case MMOV_WAITING:
if ((mmcBufferFind(&mmov_buffer,Filling) != mmcBufferNone) ||
(mmcBufferFind(&mmov_buffer,Full) != mmcBufferNone) ||
(mmcBufferFind(&mmov_buffer,Playing) != mmcBufferNone))
break;
play_state = MMOV_CLOSE;
case MMOV_CLOSE:
status = mmcWaveOutClose (hwaveout, &mmov_buffer);
if (status != MMSYSERR_NOERROR)
{
mmov_cleanup();
return;
}
mmov_cleanup();
return;
default:
mmcVerboseDisplay(Verbose,"Unknown play_state %d", play_state);
mmov_cleanup();
return;
}
mmeWaitForCallbacks (); /* block so we don't hog 100% of the CPU */
mmeProcessCallbacks ();
}
}
