/*****************************************************************************
* QNXaoutThread: asynchronous thread used to DMA the data to the device
*****************************************************************************/
static int QNXaoutThread( aout_instance_t * p_aout )
{
struct aout_sys_t * p_sys = p_aout->output.p_sys;
while ( !p_aout->b_die )
{
aout_buffer_t * p_buffer;
int i_tmp, i_size;
byte_t * p_bytes;
if ( p_aout->output.output.i_format != VLC_FOURCC('s','p','d','i') )
{
mtime_t next_date = 0;
/* Get the presentation date of the next write() operation. It
* is equal to the current date + duration of buffered samples.
* Order is important here, since GetBufInfo is believed to take
* more time than mdate(). */
next_date = (mtime_t)GetBufInfo( p_aout ) * 1000000
/ p_aout->output.output.i_bytes_per_frame
/ p_aout->output.output.i_rate
* p_aout->output.output.i_frame_length;
next_date += mdate();
p_buffer = aout_OutputNextBuffer( p_aout, next_date, VLC_FALSE );
}
else
{
p_buffer = aout_OutputNextBuffer( p_aout, 0, VLC_TRUE );
}
if ( p_buffer != NULL )
{
p_bytes = p_buffer->p_buffer;
i_size = p_buffer->i_nb_bytes;
}
else
{
i_size = DEFAULT_FRAME_SIZE / p_aout->output.output.i_frame_length
* p_aout->output.output.i_bytes_per_frame;
p_bytes = p_aout->output.p_sys->p_silent_buffer;
memset( p_bytes, 0, i_size );
}
i_tmp = snd_pcm_plugin_write( p_aout->output.p_sys->p_pcm_handle,
(void *) p_bytes,
(size_t) i_size );
if( i_tmp < 0 )
{
msg_Err( p_aout, "write failed (%s)", strerror(errno) );
}
if ( p_buffer != NULL )
{
aout_BufferFree( p_buffer );
}
}
return 0;
}
/*****************************************************************************
* QNXaoutThread: asynchronous thread used to DMA the data to the device
*****************************************************************************/
static void* QNXaoutThread( vlc_object_t *p_this )
{
aout_instance_t * p_aout = (aout_instance_t*)p_this;
struct aout_sys_t * p_sys = p_aout->output.p_sys;
int canc = vlc_savecancel ();
while ( vlc_object_alive (p_aout) )
{
aout_buffer_t * p_buffer;
int i_tmp, i_size;
uint8_t * p_bytes;
if ( p_aout->output.output.i_format != VLC_CODEC_SPDIFL )
{
mtime_t next_date = 0;
/* Get the presentation date of the next write() operation. It
* is equal to the current date + duration of buffered samples.
* Order is important here, since GetBufInfo is believed to take
* more time than mdate(). */
next_date = (mtime_t)GetBufInfo( p_aout ) * 1000000
/ p_aout->output.output.i_bytes_per_frame
/ p_aout->output.output.i_rate
* p_aout->output.output.i_frame_length;
next_date += mdate();
p_buffer = aout_OutputNextBuffer( p_aout, next_date, false );
}
else
{
p_buffer = aout_OutputNextBuffer( p_aout, 0, true );
}
if ( p_buffer != NULL )
{
p_bytes = p_buffer->p_buffer;
i_size = p_buffer->i_nb_bytes;
}
else
{
i_size = DEFAULT_FRAME_SIZE / p_aout->output.output.i_frame_length
* p_aout->output.output.i_bytes_per_frame;
p_bytes = p_aout->output.p_sys->p_silent_buffer;
memset( p_bytes, 0, i_size );
}
i_tmp = snd_pcm_plugin_write( p_aout->output.p_sys->p_pcm_handle,
(void *) p_bytes,
(size_t) i_size );
if( i_tmp < 0 )
{
msg_Err( p_aout, "write failed (%m)" );
}
if ( p_buffer != NULL )
{
aout_BufferFree( p_buffer );
}
}
vlc_restorecancel (canc);
return NULL;
}