comparison src/portaudio/include/pa_win_wasapi.h @ 4:e13257ea84a4

Add bzip2, zlib, liblo, portaudio sources

+#ifndef PA_WIN_WASAPI_H
+#define PA_WIN_WASAPI_H
+/*
+ * $Id:  $
+ * PortAudio Portable Real-Time Audio Library
+ * DirectSound specific extensions
+ *
+ * Copyright (c) 1999-2007 Ross Bencina and Phil Burk
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files
+ * (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge,
+ * publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+ * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*
+ * The text above constitutes the entire PortAudio license; however, 
+ * the PortAudio community also makes the following non-binding requests:
+ *
+ * Any person wishing to distribute modifications to the Software is
+ * requested to send the modifications to the original developer so that
+ * they can be incorporated into the canonical version. It is also 
+ * requested that these non-binding requests be included along with the 
+ * license above.
+ */
+
+/** @file
+ @ingroup public_header
+ @brief WASAPI-specific PortAudio API extension header file.
+*/
+
+#include "portaudio.h"
+#include "pa_win_waveformat.h"
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif /* __cplusplus */
+
+
+/* Setup flags */
+typedef enum PaWasapiFlags
+{
+    /* puts WASAPI into exclusive mode */
+    paWinWasapiExclusive                = (1 << 0),
+
+    /* allows to skip internal PA processing completely */
+    paWinWasapiRedirectHostProcessor    = (1 << 1),
+
+    /* assigns custom channel mask */
+    paWinWasapiUseChannelMask           = (1 << 2),
+
+    /* selects non-Event driven method of data read/write
+       Note: WASAPI Event driven core is capable of 2ms latency!!!, but Polling
+             method can only provide 15-20ms latency. */
+    paWinWasapiPolling                  = (1 << 3),
+
+    /* forces custom thread priority setting. must be used if PaWasapiStreamInfo::threadPriority 
+       is set to custom value. */
+    paWinWasapiThreadPriority           = (1 << 4)
+}
+PaWasapiFlags;
+#define paWinWasapiExclusive             (paWinWasapiExclusive)
+#define paWinWasapiRedirectHostProcessor (paWinWasapiRedirectHostProcessor)
+#define paWinWasapiUseChannelMask        (paWinWasapiUseChannelMask)
+#define paWinWasapiPolling               (paWinWasapiPolling)
+#define paWinWasapiThreadPriority        (paWinWasapiThreadPriority)
+
+
+/* Host processor. Allows to skip internal PA processing completely. 
+   You must set paWinWasapiRedirectHostProcessor flag to PaWasapiStreamInfo::flags member
+   in order to have host processor redirected to your callback.
+   Use with caution! inputFrames and outputFrames depend solely on final device setup.
+   To query maximal values of inputFrames/outputFrames use PaWasapi_GetFramesPerHostBuffer.
+*/
+typedef void (*PaWasapiHostProcessorCallback) (void *inputBuffer,  long inputFrames,
+                                               void *outputBuffer, long outputFrames,
+                                               void *userData);
+
+/* Device role */
+typedef enum PaWasapiDeviceRole
+{
+    eRoleRemoteNetworkDevice = 0,
+    eRoleSpeakers,
+    eRoleLineLevel,
+    eRoleHeadphones,
+    eRoleMicrophone,
+    eRoleHeadset,
+    eRoleHandset,
+    eRoleUnknownDigitalPassthrough,
+    eRoleSPDIF,
+    eRoleHDMI,
+    eRoleUnknownFormFactor
+}
+PaWasapiDeviceRole;
+
+
+/* Jack connection type */
+typedef enum PaWasapiJackConnectionType
+{
+    eJackConnTypeUnknown,
+    eJackConnType3Point5mm,
+    eJackConnTypeQuarter,
+    eJackConnTypeAtapiInternal,
+    eJackConnTypeRCA,
+    eJackConnTypeOptical,
+    eJackConnTypeOtherDigital,
+    eJackConnTypeOtherAnalog,
+    eJackConnTypeMultichannelAnalogDIN,
+    eJackConnTypeXlrProfessional,
+    eJackConnTypeRJ11Modem,
+    eJackConnTypeCombination
+} 
+PaWasapiJackConnectionType;
+
+
+/* Jack geometric location */
+typedef enum PaWasapiJackGeoLocation
+{
+	eJackGeoLocUnk = 0,
+    eJackGeoLocRear = 0x1, /* matches EPcxGeoLocation::eGeoLocRear */
+    eJackGeoLocFront,
+    eJackGeoLocLeft,
+    eJackGeoLocRight,
+    eJackGeoLocTop,
+    eJackGeoLocBottom,
+    eJackGeoLocRearPanel,
+    eJackGeoLocRiser,
+    eJackGeoLocInsideMobileLid,
+    eJackGeoLocDrivebay,
+    eJackGeoLocHDMI,
+    eJackGeoLocOutsideMobileLid,
+    eJackGeoLocATAPI,
+    eJackGeoLocReserved5,
+    eJackGeoLocReserved6,
+} 
+PaWasapiJackGeoLocation;
+
+
+/* Jack general location */
+typedef enum PaWasapiJackGenLocation
+{
+    eJackGenLocPrimaryBox = 0,
+    eJackGenLocInternal,
+    eJackGenLocSeparate,
+    eJackGenLocOther
+} 
+PaWasapiJackGenLocation;
+
+
+/* Jack's type of port */
+typedef enum PaWasapiJackPortConnection
+{
+    eJackPortConnJack = 0,
+    eJackPortConnIntegratedDevice,
+    eJackPortConnBothIntegratedAndJack,
+    eJackPortConnUnknown
+} 
+PaWasapiJackPortConnection;
+
+
+/* Thread priority */
+typedef enum PaWasapiThreadPriority
+{
+    eThreadPriorityNone = 0,
+    eThreadPriorityAudio,            //!< Default for Shared mode.
+    eThreadPriorityCapture,
+    eThreadPriorityDistribution,
+    eThreadPriorityGames,
+    eThreadPriorityPlayback,
+    eThreadPriorityProAudio,        //!< Default for Exclusive mode.
+    eThreadPriorityWindowManager
+}
+PaWasapiThreadPriority;
+
+
+/* Stream descriptor. */
+typedef struct PaWasapiJackDescription 
+{
+    unsigned long              channelMapping;
+    unsigned long              color; /* derived from macro: #define RGB(r,g,b) ((COLORREF)(((BYTE)(r)|((WORD)((BYTE)(g))<<8))|(((DWORD)(BYTE)(b))<<16))) */
+    PaWasapiJackConnectionType connectionType;
+    PaWasapiJackGeoLocation    geoLocation;
+    PaWasapiJackGenLocation    genLocation;
+    PaWasapiJackPortConnection portConnection;
+    unsigned int               isConnected;
+}
+PaWasapiJackDescription;
+
+
+/* Stream descriptor. */
+typedef struct PaWasapiStreamInfo 
+{
+    unsigned long size;             /**< sizeof(PaWasapiStreamInfo) */
+    PaHostApiTypeId hostApiType;    /**< paWASAPI */
+    unsigned long version;          /**< 1 */
+
+    unsigned long flags;            /**< collection of PaWasapiFlags */
+
+    /* Support for WAVEFORMATEXTENSIBLE channel masks. If flags contains
+       paWinWasapiUseChannelMask this allows you to specify which speakers 
+       to address in a multichannel stream. Constants for channelMask
+       are specified in pa_win_waveformat.h. Will be used only if 
+       paWinWasapiUseChannelMask flag is specified.
+    */
+    PaWinWaveFormatChannelMask channelMask;
+
+    /* Delivers raw data to callback obtained from GetBuffer() methods skipping 
+       internal PortAudio processing inventory completely. userData parameter will 
+       be the same that was passed to Pa_OpenStream method. Will be used only if 
+       paWinWasapiRedirectHostProcessor flag is specified.
+    */
+    PaWasapiHostProcessorCallback hostProcessorOutput;
+    PaWasapiHostProcessorCallback hostProcessorInput;
+
+    /* Specifies thread priority explicitly. Will be used only if paWinWasapiThreadPriority flag
+       is specified.
+
+       Please note, if Input/Output streams are opened simultaniously (Full-Duplex mode)
+       you shall specify same value for threadPriority or othervise one of the values will be used
+       to setup thread priority.
+    */
+    PaWasapiThreadPriority threadPriority;
+} 
+PaWasapiStreamInfo;
+
+
+/** Returns default sound format for device. Format is represented by PaWinWaveFormat or 
+    WAVEFORMATEXTENSIBLE structure.
+
+ @param pFormat Pointer to PaWinWaveFormat or WAVEFORMATEXTENSIBLE structure.
+ @param nFormatSize Size of PaWinWaveFormat or WAVEFORMATEXTENSIBLE structure in bytes.
+ @param nDevice Device index.
+
+ @return Non-negative value indicating the number of bytes copied into format decriptor
+         or, a PaErrorCode (which are always negative) if PortAudio is not initialized
+         or an error is encountered.
+*/
+int PaWasapi_GetDeviceDefaultFormat( void *pFormat, unsigned int nFormatSize, PaDeviceIndex nDevice );
+
+
+/** Returns device role (PaWasapiDeviceRole enum).
+
+ @param nDevice device index.
+
+ @return Non-negative value indicating device role or, a PaErrorCode (which are always negative)
+         if PortAudio is not initialized or an error is encountered.
+*/
+int/*PaWasapiDeviceRole*/ PaWasapi_GetDeviceRole( PaDeviceIndex nDevice );
+
+
+/** Boost thread priority of calling thread (MMCSS). Use it for Blocking Interface only for thread
+    which makes calls to Pa_WriteStream/Pa_ReadStream.
+
+ @param hTask Handle to pointer to priority task. Must be used with PaWasapi_RevertThreadPriority
+              method to revert thread priority to initial state.
+
+ @param nPriorityClass Id of thread priority of PaWasapiThreadPriority type. Specifying 
+                       eThreadPriorityNone does nothing.
+
+ @return Error code indicating success or failure.
+ @see    PaWasapi_RevertThreadPriority
+*/
+PaError PaWasapi_ThreadPriorityBoost( void **hTask, PaWasapiThreadPriority nPriorityClass );
+
+
+/** Boost thread priority of calling thread (MMCSS). Use it for Blocking Interface only for thread
+    which makes calls to Pa_WriteStream/Pa_ReadStream.
+
+ @param  hTask Task handle obtained by PaWasapi_BoostThreadPriority method.
+ @return Error code indicating success or failure.
+ @see    PaWasapi_BoostThreadPriority
+*/
+PaError PaWasapi_ThreadPriorityRevert( void *hTask );
+
+
+/** Get number of frames per host buffer. This is maximal value of frames of WASAPI buffer which 
+    can be locked for operations. Use this method as helper to findout maximal values of 
+    inputFrames/outputFrames of PaWasapiHostProcessorCallback.
+
+ @param  pStream Pointer to PaStream to query.
+ @param  nInput  Pointer to variable to receive number of input frames. Can be NULL.
+ @param  nOutput Pointer to variable to receive number of output frames. Can be NULL.
+ @return Error code indicating success or failure.
+ @see    PaWasapiHostProcessorCallback
+*/
+PaError PaWasapi_GetFramesPerHostBuffer( PaStream *pStream, unsigned int *nInput, unsigned int *nOutput );
+
+
+/** Get number of jacks associated with a WASAPI device.  Use this method to determine if
+    there are any jacks associated with the provided WASAPI device.  Not all audio devices
+	will support this capability.  This is valid for both input and output devices.
+ @param  nDevice  device index.
+ @param  jcount   Number of jacks is returned in this variable
+ @return Error code indicating success or failure
+ @see PaWasapi_GetJackDescription
+ */
+PaError PaWasapi_GetJackCount(PaDeviceIndex nDevice, int *jcount);
+
+
+/** Get the jack description associated with a WASAPI device and jack number
+    Before this function is called, use PaWasapi_GetJackCount to determine the
+	number of jacks associated with device.  If jcount is greater than zero, then
+	each jack from 0 to jcount can be queried with this function to get the jack
+	description.
+ @param  nDevice  device index.
+ @param  jindex   Which jack to return information
+ @param  KSJACK_DESCRIPTION This structure filled in on success.
+ @return Error code indicating success or failure
+ @see PaWasapi_GetJackCount
+ */
+PaError PaWasapi_GetJackDescription(PaDeviceIndex nDevice, int jindex, PaWasapiJackDescription *pJackDescription);
+
+
+/*
+    IMPORTANT:
+
+    WASAPI is implemented for Callback and Blocking interfaces. It supports Shared and Exclusive
+    share modes. 
+    
+    Exclusive Mode:
+
+        Exclusive mode allows to deliver audio data directly to hardware bypassing
+        software mixing.
+        Exclusive mode is specified by 'paWinWasapiExclusive' flag.
+
+    Callback Interface:
+
+        Provides best audio quality with low latency. Callback interface is implemented in 
+        two versions:
+
+        1) Event-Driven:
+        This is the most powerful WASAPI implementation which provides glitch-free
+        audio at around 3ms latency in Exclusive mode. Lowest possible latency for this mode is 
+        3 ms for HD Audio class audio chips. For the Shared mode latency can not be 
+		lower than 20 ms.
+
+        2) Poll-Driven:
+        Polling is another 2-nd method to operate with WASAPI. It is less efficient than Event-Driven
+        and provides latency at around 10-13ms. Polling must be used to overcome a system bug
+        under Windows Vista x64 when application is WOW64(32-bit) and Event-Driven method simply 
+        times out (event handle is never signalled on buffer completion). Please note, such WOW64 bug 
+        does not exist in Vista x86 or Windows 7.
+        Polling can be setup by speciying 'paWinWasapiPolling' flag. Our WASAPI implementation detects
+        WOW64 bug and sets 'paWinWasapiPolling' automatically.
+
+    Thread priority:
+
+        Normally thread priority is set automatically and does not require modification. Although
+        if user wants some tweaking thread priority can be modified by setting 'paWinWasapiThreadPriority'
+        flag and specifying 'PaWasapiStreamInfo::threadPriority' with value from PaWasapiThreadPriority 
+        enum.
+
+    Blocking Interface:
+
+        Blocking interface is implemented but due to above described Poll-Driven method can not
+        deliver lowest possible latency. Specifying too low latency in Shared mode will result in 
+        distorted audio although Exclusive mode adds stability.
+
+    Pa_IsFormatSupported:
+
+        To check format with correct Share Mode (Exclusive/Shared) you must supply
+        PaWasapiStreamInfo with flags paWinWasapiExclusive set through member of 
+        PaStreamParameters::hostApiSpecificStreamInfo structure.
+
+    Pa_OpenStream:
+
+        To set desired Share Mode (Exclusive/Shared) you must supply
+        PaWasapiStreamInfo with flags paWinWasapiExclusive set through member of 
+        PaStreamParameters::hostApiSpecificStreamInfo structure.
+*/
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* PA_WIN_WASAPI_H */