Certain audio APIs offer a number of parameters that influence the
I/O latency of a stream. By default, RtAudio will attempt to set
these parameters internally for robust (glitch-free) performance
- (though some APIs, like Windows Direct Sound, make this difficult).
+ (though some APIs, like Windows DirectSound, make this difficult).
By passing the RTAUDIO_MINIMIZE_LATENCY flag to the openStream()
function, internal stream settings will be influenced in an attempt
to minimize stream latency, though possibly at the expense of stream
open the input and/or output stream device(s) for exclusive use.
Note that this is not possible with all supported audio APIs.
- If the RTAUDIO_SCHEDULE_REALTIME flag is set, RtAudio will attempt
+ If the RTAUDIO_SCHEDULE_REALTIME flag is set, RtAudio will attempt
to select realtime scheduling (round-robin) for the callback thread.
If the RTAUDIO_ALSA_USE_DEFAULT flag is set, RtAudio will attempt to
MACOSX_CORE, /*!< Macintosh OS-X Core Audio API. */
WINDOWS_WASAPI, /*!< The Microsoft WASAPI API. */
WINDOWS_ASIO, /*!< The Steinberg Audio Stream I/O API. */
- WINDOWS_DS, /*!< The Microsoft Direct Sound API. */
+ WINDOWS_DS, /*!< The Microsoft DirectSound API. */
RTAUDIO_DUMMY, /*!< A compilable but non-functional API. */
NUM_APIS /*!< Number of values in this enum. */
};
bool isDefaultOutput; /*!< true if this is the default output device. */
bool isDefaultInput; /*!< true if this is the default input device. */
std::vector<unsigned int> sampleRates; /*!< Supported sample rates (queried from list of standard rates). */
- unsigned int preferredSampleRate; /*!< Preferred sample rate, eg. for WASAPI the system sample rate. */
+ unsigned int preferredSampleRate; /*!< Preferred sample rate, e.g. for WASAPI the system sample rate. */
RtAudioFormat nativeFormats; /*!< Bit mask of supported data formats. */
// Default constructor.
Certain audio APIs offer a number of parameters that influence the
I/O latency of a stream. By default, RtAudio will attempt to set
these parameters internally for robust (glitch-free) performance
- (though some APIs, like Windows Direct Sound, make this difficult).
+ (though some APIs, like Windows DirectSound, make this difficult).
By passing the RTAUDIO_MINIMIZE_LATENCY flag to the openStream()
function, internal stream settings will be influenced in an attempt
to minimize stream latency, though possibly at the expense of stream
open the input and/or output stream device(s) for exclusive use.
Note that this is not possible with all supported audio APIs.
- If the RTAUDIO_SCHEDULE_REALTIME flag is set, RtAudio will attempt
+ If the RTAUDIO_SCHEDULE_REALTIME flag is set, RtAudio will attempt
to select realtime scheduling (round-robin) for the callback thread.
The \c priority parameter will only be used if the RTAUDIO_SCHEDULE_REALTIME
flag is set. It defines the thread's realtime priority.
/*!
This function performs a system query of available devices each time it
is called, thus supporting devices connected \e after instantiation. If
- a system error occurs during processing, a warning will be issued.
+ a system error occurs during processing, a warning will be issued.
*/
unsigned int getDeviceCount( void );
from within the callback function.
\param options An optional pointer to a structure containing various
global stream options, including a list of OR'ed RtAudioStreamFlags
- and a suggested number of stream buffers that can be used to
+ and a suggested number of stream buffers that can be used to
control stream latency. More buffers typically result in more
robust performance, though at a cost of greater latency. If a
value of zero is specified, a system-specific median value is
#endif
#include <windows.h>
#include <process.h>
+ #include <stdint.h>
typedef uintptr_t ThreadHandle;
typedef CRITICAL_SECTION StreamMutex;
return *this;
}
- S24( const S24& v ) { *this = v; }
S24( const double& d ) { *this = (int) d; }
S24( const float& f ) { *this = (int) f; }
S24( const signed short& s ) { *this = (int) s; }
double streamTime; // Number of elapsed seconds since the stream started.
#if defined(HAVE_GETTIMEOFDAY)
+ // The gettimeofday() when tickStreamTime was last called, or both
+ // fields at 0 if tickStreamTime has not been called since the last
+ // startStream().
struct timeval lastTickTimestamp;
#endif
"warning" message is reported and FAILURE is returned. A
successful probe is indicated by a return value of SUCCESS.
*/
- virtual bool probeDeviceOpen( unsigned int device, StreamMode mode, unsigned int channels,
+ virtual bool probeDeviceOpen( unsigned int device, StreamMode mode, unsigned int channels,
unsigned int firstChannel, unsigned int sampleRate,
RtAudioFormat format, unsigned int *bufferSize,
RtAudio::StreamOptions *options );
void startStream( void );
void stopStream( void );
void abortStream( void );
- long getStreamLatency( void );
// This function is intended for internal use only. It must be
// public because it is called by the internal callback handler,
private:
- bool probeDeviceOpen( unsigned int device, StreamMode mode, unsigned int channels,
+ bool probeDeviceOpen( unsigned int device, StreamMode mode, unsigned int channels,
unsigned int firstChannel, unsigned int sampleRate,
RtAudioFormat format, unsigned int *bufferSize,
RtAudio::StreamOptions *options );
void startStream( void );
void stopStream( void );
void abortStream( void );
- long getStreamLatency( void );
// This function is intended for internal use only. It must be
// public because it is called by the internal callback handler,
private:
- bool probeDeviceOpen( unsigned int device, StreamMode mode, unsigned int channels,
+ bool probeDeviceOpen( unsigned int device, StreamMode mode, unsigned int channels,
unsigned int firstChannel, unsigned int sampleRate,
RtAudioFormat format, unsigned int *bufferSize,
RtAudio::StreamOptions *options );
void startStream( void );
void stopStream( void );
void abortStream( void );
- long getStreamLatency( void );
// This function is intended for internal use only. It must be
// public because it is called by the internal callback handler,
std::vector<RtAudio::DeviceInfo> devices_;
void saveDeviceInfo( void );
bool coInitialized_;
- bool probeDeviceOpen( unsigned int device, StreamMode mode, unsigned int channels,
+ bool probeDeviceOpen( unsigned int device, StreamMode mode, unsigned int channels,
unsigned int firstChannel, unsigned int sampleRate,
RtAudioFormat format, unsigned int *bufferSize,
RtAudio::StreamOptions *options );
void startStream( void );
void stopStream( void );
void abortStream( void );
- long getStreamLatency( void );
// This function is intended for internal use only. It must be
// public because it is called by the internal callback handler,
bool buffersRolling;
long duplexPrerollBytes;
std::vector<struct DsDevice> dsDevices;
- bool probeDeviceOpen( unsigned int device, StreamMode mode, unsigned int channels,
+ bool probeDeviceOpen( unsigned int device, StreamMode mode, unsigned int channels,
unsigned int firstChannel, unsigned int sampleRate,
RtAudioFormat format, unsigned int *bufferSize,
RtAudio::StreamOptions *options );
std::vector<RtAudio::DeviceInfo> devices_;
void saveDeviceInfo( void );
- bool probeDeviceOpen( unsigned int device, StreamMode mode, unsigned int channels,
+ bool probeDeviceOpen( unsigned int device, StreamMode mode, unsigned int channels,
unsigned int firstChannel, unsigned int sampleRate,
RtAudioFormat format, unsigned int *bufferSize,
RtAudio::StreamOptions *options );
#if defined(__LINUX_PULSE__)
+struct pa_context;
+struct pa_sink_info;
+struct pa_threaded_mainloop;
+
class RtApiPulse: public RtApi
{
public:
+ RtApiPulse() : mainloop_(0), channels_(2) {}
~RtApiPulse();
RtAudio::Api getCurrentApi() { return RtAudio::LINUX_PULSE; }
unsigned int getDeviceCount( void );
unsigned int firstChannel, unsigned int sampleRate,
RtAudioFormat format, unsigned int *bufferSize,
RtAudio::StreamOptions *options );
+ static void sinkInfoCallback(pa_context* c, const pa_sink_info* info, int eol, void* arg);
+ static void contextStateCallback(pa_context* c, void* arg);
+ pa_threaded_mainloop* mainloop_;
+ int channels_;
};
#endif
private:
- bool probeDeviceOpen( unsigned int device, StreamMode mode, unsigned int channels,
+ bool probeDeviceOpen( unsigned int device, StreamMode mode, unsigned int channels,
unsigned int firstChannel, unsigned int sampleRate,
RtAudioFormat format, unsigned int *bufferSize,
RtAudio::StreamOptions *options );
private:
- bool probeDeviceOpen( unsigned int /*device*/, StreamMode /*mode*/, unsigned int /*channels*/,
+ bool probeDeviceOpen( unsigned int /*device*/, StreamMode /*mode*/, unsigned int /*channels*/,
unsigned int /*firstChannel*/, unsigned int /*sampleRate*/,
RtAudioFormat /*format*/, unsigned int * /*bufferSize*/,
RtAudio::StreamOptions * /*options*/ ) { return false; }
projects / rtaudio-cdist.git / blobdiff