00001 #ifndef PA_MAC_CORE_H 00002 #define PA_MAC_CORE_H 00003 /* 00004 * PortAudio Portable Real-Time Audio Library 00005 * Macintosh Core Audio specific extensions 00006 * portaudio.h should be included before this file. 00007 * 00008 * Copyright (c) 2005-2006 Bjorn Roche 00009 * 00010 * Permission is hereby granted, free of charge, to any person obtaining 00011 * a copy of this software and associated documentation files 00012 * (the "Software"), to deal in the Software without restriction, 00013 * including without limitation the rights to use, copy, modify, merge, 00014 * publish, distribute, sublicense, and/or sell copies of the Software, 00015 * and to permit persons to whom the Software is furnished to do so, 00016 * subject to the following conditions: 00017 * 00018 * The above copyright notice and this permission notice shall be 00019 * included in all copies or substantial portions of the Software. 00020 * 00021 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 00022 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 00023 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 00024 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR 00025 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF 00026 * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 00027 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 00028 */ 00029 00030 /* 00031 * The text above constitutes the entire PortAudio license; however, 00032 * the PortAudio community also makes the following non-binding requests: 00033 * 00034 * Any person wishing to distribute modifications to the Software is 00035 * requested to send the modifications to the original developer so that 00036 * they can be incorporated into the canonical version. It is also 00037 * requested that these non-binding requests be included along with the 00038 * license above. 00039 */ 00040 00046 #include "portaudio.h" 00047 00048 #include <AudioUnit/AudioUnit.h> 00049 //#include <AudioToolbox/AudioToolbox.h> 00050 00051 #ifdef __cplusplus 00052 extern "C" { 00053 #endif 00054 00055 00056 /* 00057 * A pointer to a paMacCoreStreamInfo may be passed as 00058 * the hostApiSpecificStreamInfo in the PaStreamParameters struct 00059 * when opening a stream or querying the format. Use NULL, for the 00060 * defaults. Note that for duplex streams, flags for input and output 00061 * should be the same or behaviour is undefined. 00062 */ 00063 typedef struct 00064 { 00065 unsigned long size; 00066 PaHostApiTypeId hostApiType; 00067 unsigned long version; 00068 unsigned long flags; /* flags to modify behaviour */ 00069 SInt32 const * channelMap; /* Channel map for HAL channel mapping , if not needed, use NULL;*/ 00070 unsigned long channelMapSize; /* Channel map size for HAL channel mapping , if not needed, use 0;*/ 00071 } PaMacCoreStreamInfo; 00072 00073 /* 00074 * Functions 00075 */ 00076 00077 00078 /* Use this function to initialize a paMacCoreStreamInfo struct 00079 * using the requested flags. Note that channel mapping is turned 00080 * off after a call to this function. 00081 * @param data The datastructure to initialize 00082 * @param flags The flags to initialize the datastructure with. 00083 */ 00084 void PaMacCore_SetupStreamInfo( PaMacCoreStreamInfo *data, unsigned long flags ); 00085 00086 /* call this after pa_SetupMacCoreStreamInfo to use channel mapping as described in notes.txt. 00087 * @param data The stream info structure to assign a channel mapping to 00088 * @param channelMap The channel map array, as described in notes.txt. This array pointer will be used directly (ie the underlying data will not be copied), so the caller should not free the array until after the stream has been opened. 00089 * @param channelMapSize The size of the channel map array. 00090 */ 00091 void PaMacCore_SetupChannelMap( PaMacCoreStreamInfo *data, const SInt32 * const channelMap, unsigned long channelMapSize ); 00092 00093 /* 00094 * Retrieve the AudioDeviceID of the input device assigned to an open stream 00095 * 00096 * @param s The stream to query. 00097 * 00098 * @return A valid AudioDeviceID, or NULL if an error occurred. 00099 */ 00100 AudioDeviceID PaMacCore_GetStreamInputDevice( PaStream* s ); 00101 00102 /* 00103 * Retrieve the AudioDeviceID of the output device assigned to an open stream 00104 * 00105 * @param s The stream to query. 00106 * 00107 * @return A valid AudioDeviceID, or NULL if an error occurred. 00108 */ 00109 AudioDeviceID PaMacCore_GetStreamOutputDevice( PaStream* s ); 00110 00111 /* 00112 * Returns a statically allocated string with the device's name 00113 * for the given channel. NULL will be returned on failure. 00114 * 00115 * This function's implemenation is not complete! 00116 * 00117 * @param device The PortAudio device index. 00118 * @param channel The channel number who's name is requested. 00119 * @return a statically allocated string with the name of the device. 00120 * Because this string is statically allocated, it must be 00121 * coppied if it is to be saved and used by the user after 00122 * another call to this function. 00123 * 00124 */ 00125 const char *PaMacCore_GetChannelName( int device, int channelIndex, bool input ); 00126 00127 /* 00128 * Flags 00129 */ 00130 00131 /* 00132 * The following flags alter the behaviour of PA on the mac platform. 00133 * they can be ORed together. These should work both for opening and 00134 * checking a device. 00135 */ 00136 00137 /* Allows PortAudio to change things like the device's frame size, 00138 * which allows for much lower latency, but might disrupt the device 00139 * if other programs are using it, even when you are just Querying 00140 * the device. */ 00141 #define paMacCoreChangeDeviceParameters (0x01) 00142 00143 /* In combination with the above flag, 00144 * causes the stream opening to fail, unless the exact sample rates 00145 * are supported by the device. */ 00146 #define paMacCoreFailIfConversionRequired (0x02) 00147 00148 /* These flags set the SR conversion quality, if required. The wierd ordering 00149 * allows Maximum Quality to be the default.*/ 00150 #define paMacCoreConversionQualityMin (0x0100) 00151 #define paMacCoreConversionQualityMedium (0x0200) 00152 #define paMacCoreConversionQualityLow (0x0300) 00153 #define paMacCoreConversionQualityHigh (0x0400) 00154 #define paMacCoreConversionQualityMax (0x0000) 00155 00156 /* 00157 * Here are some "preset" combinations of flags (above) to get to some 00158 * common configurations. THIS IS OVERKILL, but if more flags are added 00159 * it won't be. 00160 */ 00161 00162 /*This is the default setting: do as much sample rate conversion as possible 00163 * and as little mucking with the device as possible. */ 00164 #define paMacCorePlayNice (0x00) 00165 /*This setting is tuned for pro audio apps. It allows SR conversion on input 00166 and output, but it tries to set the appropriate SR on the device.*/ 00167 #define paMacCorePro (0x01) 00168 /*This is a setting to minimize CPU usage and still play nice.*/ 00169 #define paMacCoreMinimizeCPUButPlayNice (0x0100) 00170 /*This is a setting to minimize CPU usage, even if that means interrupting the device. */ 00171 #define paMacCoreMinimizeCPU (0x0101) 00172 00173 00174 #ifdef __cplusplus 00175 } 00176 #endif /* __cplusplus */ 00177 00178 #endif /* PA_MAC_CORE_H */