// // This file is part of Dire Wolf, an amateur radio packet TNC. // // Copyright (C) 2011, 2012, 2013, 2014, 2015 John Langner, WB2OSZ // Copyright (C) 2015 Robert Stiles, KK5VD // // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 2 of the License, or // (at your option) any later version. // // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // // You should have received a copy of the GNU General Public License // along with this program. If not, see . // /*------------------------------------------------------------------ * * Module: audio_portaudio.c * * Purpose: Interface to audio device commonly called a "sound card" for * historical reasons. * * This version is for Various OS' using Port Audio * * Major Revisions: * * 1.2 - Add ability to use more than one audio device. * 1.3 - New file added for Port Audio for Mac and possibly others. * *---------------------------------------------------------------*/ #if defined(USE_PORTAUDIO) #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "direwolf.h" #include "audio.h" #include "audio_stats.h" #include "textcolor.h" #include "dtime_now.h" #include "demod.h" /* for alevel_t & demod_get_audio_level() */ #include "portaudio.h" /* Audio configuration. */ static struct audio_s *save_audio_config_p; /* Current state for each of the audio devices. */ static struct adev_s { pthread_mutex_t input_mutex; pthread_cond_t input_cond; PaStream *inStream; PaStreamParameters inputParameters; int pa_input_device_number; int no_of_input_channels; int input_finished; int input_pause; int input_flush; void *audio_in_handle; int inbuf_size_in_bytes; /* number of bytes allocated */ unsigned char *inbuf_ptr; int inbuf_len; /* number byte of actual data available. */ int inbuf_next; /* index of next to remove. */ int inbuf_bytes_per_frame; /* number of bytes for a sample from all channels. */ int inbuf_frames_per_buffer; /* number of frames in a buffer. */ pthread_mutex_t output_mutex; pthread_cond_t output_cond; PaStream *outStream; PaStreamParameters outputParameters; int pa_output_device_number; int no_of_output_channels; int output_pause; int output_finished; int output_flush; int output_wait_flag; void *audio_out_handle; int outbuf_size_in_bytes; unsigned char *outbuf_ptr; int outbuf_len; int outbuf_next; /* index of next to remove. */ int outbuf_bytes_per_frame; /* number of bytes for a sample from all channels. */ int outbuf_frames_per_buffer; /* number of frames in a buffer. */ enum audio_in_type_e g_audio_in_type; int udp_sock; /* UDP socket for receiving data */ } adev[MAX_ADEVS]; // Originally 40. Version 1.2, try 10 for lower latency. #define ONE_BUF_TIME 10 #define SAMPLE_SILENCE 0 #define PA_INPUT 1 #define PA_OUTPUT 2 #define roundup1k(n) (((n) + 0x3ff) & ~0x3ff) #undef FOR_FUTURE_USE static int set_portaudio_params (int a, struct adev_s *dev, struct audio_s *pa, char *devname, char *inout); static void print_pa_devices(void); static int check_pa_configure(struct adev_s *dev, int sample_rate); static void list_supported_sample_rates(struct adev_s *dev); static int pa_devNN(char *deviceStr, char *_devName, size_t length, int *_devNo); static int searchPADevice(struct adev_s *dev, char *_devName, int reqDeviceNo, int io_flag); static int calcbufsize(int rate, int chans, int bits); static int calcbufsize(int rate, int chans, int bits) { int size1 = (rate * chans * bits / 8 * ONE_BUF_TIME) / 1000; int size2 = roundup1k(size1); #if DEBUG text_color_set(DW_COLOR_DEBUG); dw_printf ("audio_open: calcbufsize (rate=%d, chans=%d, bits=%d) calc size=%d, round up to %d\n", rate, chans, bits, size1, size2); #endif return (size2); } /*------------------------------------------------------------------ * Search the portaudio device tree looking for the request device. * One of the issues with portaudio has to do with devices returning * the same device name for more then one connected device * (ie two SignaLinks). Appending a Portaudio device index to the * the device name ensure we can find the correct one. And if it's not * available return the first occurence that matches the device name. *----------------------------------------------------------------*/ static int searchPADevice(struct adev_s *dev, char *_devName, int reqDeviceNo, int io_flag) { int numDevices = Pa_GetDeviceCount(); const PaDeviceInfo * di = (PaDeviceInfo *)0; int i = 0; // First check to see if the requested index matches the device name. if(reqDeviceNo < numDevices) { di = Pa_GetDeviceInfo((PaDeviceIndex) reqDeviceNo); if(strncmp(di->name, _devName, 80) == 0) { if((io_flag == PA_INPUT) && di->maxInputChannels) return reqDeviceNo; if((io_flag == PA_OUTPUT) && di->maxOutputChannels) return reqDeviceNo; } } // Requested device index doesn't match device name. Search for one. for(i = 0; i < numDevices; i++) { di = Pa_GetDeviceInfo((PaDeviceIndex) i); if(strncmp(di->name, _devName, 80) == 0) { if((io_flag == PA_INPUT) && di->maxInputChannels) return i; if((io_flag == PA_OUTPUT) && di->maxOutputChannels) return i; } } // No Matches found return -1; } /*------------------------------------------------------------------ * Extract device name and number. *----------------------------------------------------------------*/ static int pa_devNN(char *deviceStr, char *_devName, size_t length, int *_devNo) { char *cPtr = (char *)0; char cVal = 0; int count = 0; char numStr[8]; if(!deviceStr || !_devName || !_devNo) { dw_printf( "Internal Error: Func %s passed null pointer.\n", __func__); return -1; } cPtr = deviceStr; memset(_devName, 0, length); memset(numStr, 0, sizeof(numStr)); while(*cPtr) { cVal = *cPtr++; if(cVal == ':') break; if(((cVal >= ' ') && (cVal <= '~')) && (count < length)) { _devName[count++] = cVal; } } count = 0; while(*cPtr) { cVal = *cPtr++; if(isdigit(cVal) && (count < (sizeof(numStr) - 1))) { numStr[count++] = cVal; } } if(numStr[0] == 0) { *_devNo = 0; } else { sscanf(numStr, "%d", _devNo); } return 0; } /*------------------------------------------------------------------ * List the supported sample rates. *----------------------------------------------------------------*/ static void list_supported_sample_rates(struct adev_s *dev) { static double standardSampleRates[] = { 8000.0, 9600.0, 11025.0, 12000.0, 16000.0, 22050.0, 24000.0, 32000.0, 44100.0, 48000.0, 88200.0, 96000.0, 192000.0, -1 /* negative terminated list */ }; int i, printCount; PaError err; printCount = 0; for(i = 0; standardSampleRates[i] > 0; i++ ) { err = Pa_IsFormatSupported(&dev->inputParameters, &dev->outputParameters, standardSampleRates[i] ); if( err == paFormatIsSupported ) { if( printCount == 0 ) { dw_printf( "\t%8.2f", standardSampleRates[i] ); printCount = 1; } else if( printCount == 4 ) { dw_printf( ",\n\t%8.2f", standardSampleRates[i] ); printCount = 1; } else { dw_printf( ", %8.2f", standardSampleRates[i] ); ++printCount; } } } if( !printCount ) dw_printf( "None\n" ); else dw_printf( "\n" ); } /*------------------------------------------------------------------ * Check PA Configure parameters. *----------------------------------------------------------------*/ static int check_pa_configure(struct adev_s *dev, int sample_rate) { if(!dev) { dw_printf( "Internal Error: Func %s struct adev_s *dev null pointer.\n", __func__); return -1; } PaError err = 0; err = Pa_IsFormatSupported(&dev->inputParameters, &dev->outputParameters, sample_rate); if(err == paFormatIsSupported) return 0; dw_printf( "PortAudio Config Error: %s\n", Pa_GetErrorText(err)); return err; } /*------------------------------------------------------------------ * Print a list of device names and parameters *----------------------------------------------------------------*/ static void print_pa_devices(void) { int i, numDevices, defaultDisplayed; const PaDeviceInfo *deviceInfo; numDevices = Pa_GetDeviceCount(); if( numDevices < 0 ) { dw_printf( "ERROR: Pa_GetDeviceCount returned 0x%x\n", numDevices ); return; } dw_printf( "Number of devices = %d\n", numDevices ); for(i = 0; i < numDevices; i++ ) { deviceInfo = Pa_GetDeviceInfo( i ); dw_printf( "--------------------------------------- device #%d\n", i ); /* Mark global and API specific default devices */ defaultDisplayed = 0; if( i == Pa_GetDefaultInputDevice() ) { dw_printf( "[ Default Input" ); defaultDisplayed = 1; } else if( i == Pa_GetHostApiInfo( deviceInfo->hostApi )->defaultInputDevice ) { const PaHostApiInfo *hostInfo = Pa_GetHostApiInfo( deviceInfo->hostApi ); dw_printf( "[ Default %s Input", hostInfo->name ); defaultDisplayed = 1; } if( i == Pa_GetDefaultOutputDevice() ) { dw_printf( (defaultDisplayed ? "," : "[") ); dw_printf( " Default Output" ); defaultDisplayed = 1; } else if( i == Pa_GetHostApiInfo( deviceInfo->hostApi )->defaultOutputDevice ) { const PaHostApiInfo *hostInfo = Pa_GetHostApiInfo( deviceInfo->hostApi ); dw_printf( (defaultDisplayed ? "," : "[") ); dw_printf( " Default %s Output", hostInfo->name ); defaultDisplayed = 1; } if( defaultDisplayed ) dw_printf( " ]\n" ); /* print device info fields */ dw_printf( "Name = \"%s\"\n", deviceInfo->name ); dw_printf( "Host API = %s\n", Pa_GetHostApiInfo( deviceInfo->hostApi )->name ); dw_printf( "Max inputs = %d\n", deviceInfo->maxInputChannels ); dw_printf( "Max outputs = %d\n", deviceInfo->maxOutputChannels ); } } /*------------------------------------------------------------------ * Port Audio Input Callback *----------------------------------------------------------------*/ static int paInput16CB( const void *inputBuffer, void *outputBuffer, unsigned long framesPerBuffer, const PaStreamCallbackTimeInfo* timeInfo, PaStreamCallbackFlags statusFlags, void *userData ) { struct adev_s *data = (struct adev_s *) userData; const int16_t *rptr = (const int16_t *) inputBuffer; size_t framesToCalc = 0; size_t i = 0; int finished = 0; int word = 0; size_t bytes_left = data->inbuf_size_in_bytes - data->inbuf_len; size_t framesLeft = bytes_left / data->inbuf_bytes_per_frame; (void) outputBuffer; /* Prevent unused variable warnings. */ (void) timeInfo; (void) statusFlags; (void) userData; if( framesLeft < framesPerBuffer ) { framesToCalc = framesLeft; finished = paComplete; } else { framesToCalc = framesPerBuffer; finished = paContinue; } if( inputBuffer == NULL || data->input_flush) { for(i = 0; i < framesToCalc; i++) { data->inbuf_ptr[data->inbuf_len++] = SAMPLE_SILENCE; data->inbuf_ptr[data->inbuf_len++] = SAMPLE_SILENCE; if(data->no_of_input_channels == 2) { data->inbuf_ptr[data->inbuf_len++] = SAMPLE_SILENCE; data->inbuf_ptr[data->inbuf_len++] = SAMPLE_SILENCE; } } } else { for(i = 0; i < framesToCalc; i++) { word = *rptr++; /* left */ data->inbuf_ptr[data->inbuf_len++] = word & 0xff; data->inbuf_ptr[data->inbuf_len++] = (word >> 8) & 0xff; if(data->no_of_input_channels == 2) { word = *rptr++; /* right */ data->inbuf_ptr[data->inbuf_len++] = word & 0xff; data->inbuf_ptr[data->inbuf_len++] = (word >> 8) & 0xff; } } } if((finished == paComplete) || (data->inbuf_len >= data->inbuf_size_in_bytes)) { pthread_cond_signal(&data->input_cond); finished = data->input_finished; } return finished; } #if FOR_FUTURE_USE /*------------------------------------------------------------------ * Port Audio Output Callback *----------------------------------------------------------------*/ static int paOutput16CB( const void *inputBuffer, void *outputBuffer, unsigned long framesPerBuffer, const PaStreamCallbackTimeInfo* timeInfo, PaStreamCallbackFlags statusFlags, void *userData) { struct adev_s *data = (struct adev_s *) userData; int16_t *wptr = (int16_t *) outputBuffer; size_t i = 0; int finished = 0; size_t bytes_left = data->outbuf_size_in_bytes - data->outbuf_len; size_t framesLeft = bytes_left / data->outbuf_bytes_per_frame; int word = 0; (void) inputBuffer; /* Prevent unused variable warnings. */ (void) timeInfo; (void) statusFlags; (void) userData; if(framesLeft && (framesLeft < framesPerBuffer)) { /* final buffer... */ for(i = 0; i < framesLeft; i++ ) { word = data->outbuf_ptr[data->outbuf_len++] & 0xff; word |= (data->outbuf_ptr[data->outbuf_len++] << 8) & 0xff; *wptr++ = word; /* left */ if(data->no_of_output_channels == 2 ) { word = data->outbuf_ptr[data->outbuf_len++] & 0xff; word |= (data->outbuf_ptr[data->outbuf_len++] << 8) & 0xff; *wptr++ = word; /* right */ } } for( ; i < framesPerBuffer; i++ ) { *wptr++ = 0; /* left */ if(data->no_of_output_channels == 2 ) *wptr++ = 0; /* right */ } finished = paContinue; } else { for(i = 0; i < framesPerBuffer; i++ ) { word = data->outbuf_ptr[data->outbuf_len++] & 0xff; word |= (data->outbuf_ptr[data->outbuf_len++] << 8) & 0xff; *wptr++ = word; /* left */ if(data->no_of_output_channels == 2) { word = data->outbuf_ptr[data->outbuf_len++] & 0xff; word |= (data->outbuf_ptr[data->outbuf_len++] << 8) & 0xff; *wptr++ = word; /* right */ } } finished = paComplete; } if(data->output_flush) { data->output_flush = 0; finished = paComplete; } pthread_cond_signal(&data->output_cond); finished = data->output_finished; return finished; } #endif /*------------------------------------------------------------------ * * Name: audio_open * * Purpose: Open the digital audio device. * * New in version 1.0, we recognize "udp:" optionally * followed by a port number. * * Inputs: pa - Address of structure of type audio_s. * * Using a structure, rather than separate arguments * seemed to make sense because we often pass around * the same set of parameters various places. * * The fields that we care about are: * num_channels * samples_per_sec * bits_per_sample * If zero, reasonable defaults will be provided. * * The device names are in adevice_in and adevice_out. * where c is the "card" (for historical purposes) * and d is the "device" within the "card." * * * Outputs: pa - The ACTUAL values are returned here. * * These might not be exactly the same as what was requested. * * Example: ask for stereo, 16 bits, 22050 per second. * An ordinary desktop/laptop PC should be able to handle this. * However, some other sort of smaller device might be * more restrictive in its capabilities. * It might say, the best I can do is mono, 8 bit, 8000/sec. * * The sofware modem must use this ACTUAL information * that the device is supplying, that could be different * than what the user specified. * * Returns: 0 for success, -1 for failure. * * *----------------------------------------------------------------*/ int audio_open (struct audio_s *pa) { int err = 0; int chan = 0; int a = 0; int clear_value = 0; char audio_in_name[80]; char audio_out_name[80]; static int initalize_flag = 0; PaError paerr = paNoError; if(!initalize_flag) { paerr = Pa_Initialize(); initalize_flag = -1; } if(paerr != paNoError ) return -1; save_audio_config_p = pa; memset (adev, 0, sizeof(adev)); memset (audio_in_name, 0, sizeof(audio_in_name)); memset (audio_out_name, 0, sizeof(audio_out_name)); for (a = 0; a < MAX_ADEVS; a++) { adev[a].udp_sock = -1; } /* * Fill in defaults for any missing values. */ for (a = 0; a < MAX_ADEVS; a++) { if (pa->adev[a].num_channels == 0) pa->adev[a].num_channels = DEFAULT_NUM_CHANNELS; if (pa->adev[a].samples_per_sec == 0) pa->adev[a].samples_per_sec = DEFAULT_SAMPLES_PER_SEC; if (pa->adev[a].bits_per_sample == 0) pa->adev[a].bits_per_sample = DEFAULT_BITS_PER_SAMPLE; for (chan = 0; chan < MAX_CHANS; chan++) { if (pa->achan[chan].mark_freq == 0) pa->achan[chan].mark_freq = DEFAULT_MARK_FREQ; if (pa->achan[chan].space_freq == 0) pa->achan[chan].space_freq = DEFAULT_SPACE_FREQ; if (pa->achan[chan].baud == 0) pa->achan[chan].baud = DEFAULT_BAUD; if (pa->achan[chan].num_subchan == 0) pa->achan[chan].num_subchan = 1; } } /* * Open audio device(s). */ for (a = 0; a < MAX_ADEVS; a++) { if (pa->adev[a].defined) { adev[a].inbuf_size_in_bytes = 0; adev[a].outbuf_size_in_bytes = 0; /* * Determine the type of audio input. */ adev[a].g_audio_in_type = AUDIO_IN_TYPE_SOUNDCARD; if (strcasecmp(pa->adev[a].adevice_in, "stdin") == 0 || strcmp(pa->adev[a].adevice_in, "-") == 0) { adev[a].g_audio_in_type = AUDIO_IN_TYPE_STDIN; /* Change "-" to stdin for readability. */ strlcpy (pa->adev[a].adevice_in, "stdin", sizeof(pa->adev[a].adevice_in)); } if (strncasecmp(pa->adev[a].adevice_in, "udp:", 4) == 0) { adev[a].g_audio_in_type = AUDIO_IN_TYPE_SDR_UDP; /* Supply default port if none specified. */ if (strcasecmp(pa->adev[a].adevice_in,"udp") == 0 || strcasecmp(pa->adev[a].adevice_in,"udp:") == 0) { snprintf (pa->adev[a].adevice_in, sizeof(pa->adev[a].adevice_in), "udp:%d", DEFAULT_UDP_AUDIO_PORT); } } /* Let user know what is going on. */ /* If not specified, the device names should be "default". */ strlcpy (audio_in_name, pa->adev[a].adevice_in, sizeof(audio_in_name)); strlcpy (audio_out_name, pa->adev[a].adevice_out, sizeof(audio_out_name)); char ctemp[40]; if (pa->adev[a].num_channels == 2) { snprintf (ctemp, sizeof(ctemp), " (channels %d & %d)", ADEVFIRSTCHAN(a), ADEVFIRSTCHAN(a)+1); } else { snprintf (ctemp, sizeof(ctemp), " (channel %d)", ADEVFIRSTCHAN(a)); } text_color_set(DW_COLOR_INFO); if (strcmp(audio_in_name,audio_out_name) == 0) { dw_printf ("Audio device for both receive and transmit: %s %s\n", audio_in_name, ctemp); } else { dw_printf ("Audio input device for receive: %s %s\n", audio_in_name, ctemp); dw_printf ("Audio out device for transmit: %s %s\n", audio_out_name, ctemp); } /* * Now attempt actual opens. */ /* * Input device. */ switch (adev[a].g_audio_in_type) { case AUDIO_IN_TYPE_SOUNDCARD: print_pa_devices(); err = set_portaudio_params (a, &adev[a], pa, audio_in_name, audio_out_name); if(err < 0) return -1; pthread_mutex_init(&adev[a].input_mutex, NULL); pthread_cond_init(&adev[a].input_cond, NULL); pthread_mutex_init(&adev[a].output_mutex, NULL); pthread_cond_init(&adev[a].output_cond, NULL); if(pa->adev[a].bits_per_sample == 8) clear_value = 128; else clear_value = 0; break; /* * UDP. */ case AUDIO_IN_TYPE_SDR_UDP: // Create socket and bind socket { struct sockaddr_in si_me; //Create UDP Socket if ((adev[a].udp_sock=socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP))==-1) { text_color_set(DW_COLOR_ERROR); dw_printf ("Couldn't create socket, errno %d\n", errno); return -1; } memset((char *) &si_me, 0, sizeof(si_me)); si_me.sin_family = AF_INET; si_me.sin_port = htons((short)atoi(audio_in_name+4)); si_me.sin_addr.s_addr = htonl(INADDR_ANY); //Bind to the socket if (bind(adev[a].udp_sock, (const struct sockaddr *) &si_me, sizeof(si_me))==-1) { text_color_set(DW_COLOR_ERROR); dw_printf ("Couldn't bind socket, errno %d\n", errno); return -1; } } //adev[a].inbuf_size_in_bytes = SDR_UDP_BUF_MAXLEN; break; /* * stdin. */ case AUDIO_IN_TYPE_STDIN: /* Do we need to adjust any properties of stdin? */ //adev[a].inbuf_size_in_bytes = 1024; break; default: text_color_set(DW_COLOR_ERROR); dw_printf ("Internal error, invalid audio_in_type\n"); return (-1); } /* * Finally allocate buffer for each direction. */ /* Version 1.3 - Add sanity check on buffer size. */ /* There was a reported case of assert failure on buffer size in audio_get(). */ if (adev[a].inbuf_size_in_bytes < 256 || adev[a].inbuf_size_in_bytes > 32768) { text_color_set(DW_COLOR_ERROR); dw_printf ("Audio input buffer has unexpected extreme size of %d bytes.\n", adev[a].inbuf_size_in_bytes); dw_printf ("Detected at %s, line %d.\n", __FILE__, __LINE__); dw_printf ("This might be caused by unusual audio device configuration values.\n"); adev[a].inbuf_size_in_bytes = 2048; dw_printf ("Using %d to attempt recovery.\n", adev[a].inbuf_size_in_bytes); } if (adev[a].outbuf_size_in_bytes < 256 || adev[a].outbuf_size_in_bytes > 32768) { text_color_set(DW_COLOR_ERROR); dw_printf ("Audio output buffer has unexpected extreme size of %d bytes.\n", adev[a].outbuf_size_in_bytes); dw_printf ("Detected at %s, line %d.\n", __FILE__, __LINE__); dw_printf ("This might be caused by unusual audio device configuration values.\n"); adev[a].outbuf_size_in_bytes = 2048; dw_printf ("Using %d to attempt recovery.\n", adev[a].outbuf_size_in_bytes); } adev[a].inbuf_ptr = malloc(adev[a].inbuf_size_in_bytes); assert (adev[a].inbuf_ptr != NULL); adev[a].inbuf_len = 0; adev[a].inbuf_next = 0; memset(adev[a].inbuf_ptr, clear_value, adev[a].inbuf_size_in_bytes); adev[a].outbuf_ptr = malloc(adev[a].outbuf_size_in_bytes); assert (adev[a].outbuf_ptr != NULL); adev[a].outbuf_len = 0; adev[a].outbuf_next = 0; memset(adev[a].outbuf_ptr, clear_value, adev[a].outbuf_size_in_bytes); if(adev[a].inStream) { err = Pa_StartStream(adev[a].inStream); if(err != paNoError) { dw_printf ("Input stream start Error %s\n", Pa_GetErrorText(err)); } } if(adev[a].outStream) { err = Pa_StartStream(adev[a].outStream); if(err != paNoError) { dw_printf ("Output stream start Error %s\n", Pa_GetErrorText(err)); } } } /* end of audio device defined */ } /* end of for each audio device */ return (0); } /* end audio_open */ /* * Set parameters for sound card. * * See ?? for details. */ static int set_portaudio_params (int a, struct adev_s *dev, struct audio_s *pa, char *_audio_in_name, char *_audio_out_name) { int numDevices = 0; int err = 0; int buffer_size = 0; int sampleFormat = 0; int no_of_bytes_per_sample = 0; int reqInDeviceNo = 0; int reqOutDeviceNo = 0; char input_devName[80]; char output_devName[80]; text_color_set(DW_COLOR_ERROR); if(!dev || !pa || !_audio_in_name || !_audio_out_name) { dw_printf ("Internal error, invalid function parameter pointer(s) (null)\n"); return -1; } if(_audio_in_name[0] == 0) { dw_printf ("Input device name null\n"); return -1; } if(_audio_out_name[0] == 0) { dw_printf ("Output device name null\n"); return -1; } numDevices = Pa_GetDeviceCount(); if( numDevices < 0 ) { dw_printf( "ERROR: Pa_GetDeviceCount returned 0x%x\n", numDevices ); return -1; } err = pa_devNN(_audio_in_name, input_devName, sizeof(input_devName), &reqInDeviceNo); if(err < 0) return -1; reqInDeviceNo = searchPADevice(dev, input_devName, reqInDeviceNo, PA_INPUT); if(reqInDeviceNo < 0) { dw_printf ("Requested Input Audio Device not found %s.\n", input_devName); return -1; } err = pa_devNN(_audio_out_name, output_devName, sizeof(output_devName), &reqOutDeviceNo); if(err < 0) return -1; reqOutDeviceNo = searchPADevice(dev, output_devName, reqOutDeviceNo, PA_OUTPUT); if(reqOutDeviceNo < 0) { dw_printf ("Requested Output Audio Device not found %s.\n", output_devName); return -1; } dev->pa_input_device_number = reqInDeviceNo; dev->pa_output_device_number = reqOutDeviceNo; switch(pa->adev[a].bits_per_sample) { case 8: sampleFormat = paInt8; no_of_bytes_per_sample = sizeof(int8_t); assert("int8_t size not equal to 1" && sizeof(int8_t) == 1); break; case 16: sampleFormat = paInt16; no_of_bytes_per_sample = sizeof(int16_t); assert("int16_t size not equal to 2" && sizeof(int16_t) == 2); break; default: dw_printf ("Unsupported Sample Size %s.\n", output_devName); return -1; } buffer_size = calcbufsize(pa->adev[a].samples_per_sec, pa->adev[a].num_channels, pa->adev[a].bits_per_sample); dev->inbuf_size_in_bytes = buffer_size; dev->inbuf_bytes_per_frame = no_of_bytes_per_sample * pa->adev[a].num_channels; dev->inbuf_frames_per_buffer = dev->inbuf_size_in_bytes / dev->inbuf_bytes_per_frame; dev->inputParameters.device = dev->pa_input_device_number; dev->inputParameters.channelCount = pa->adev[a].num_channels; dev->inputParameters.sampleFormat = sampleFormat; dev->inputParameters.suggestedLatency = Pa_GetDeviceInfo(dev->inputParameters.device)->defaultLowInputLatency; dev->inputParameters.hostApiSpecificStreamInfo = NULL; dev->outbuf_size_in_bytes = buffer_size; dev->outbuf_bytes_per_frame = no_of_bytes_per_sample * pa->adev[a].num_channels; dev->outbuf_frames_per_buffer = dev->outbuf_size_in_bytes / dev->outbuf_bytes_per_frame; dev->outputParameters.device = dev->pa_output_device_number; dev->outputParameters.channelCount = pa->adev[a].num_channels; dev->outputParameters.sampleFormat = sampleFormat; dev->outputParameters.suggestedLatency = Pa_GetDeviceInfo(dev->outputParameters.device)->defaultHighOutputLatency; dev->outputParameters.hostApiSpecificStreamInfo = NULL; err = check_pa_configure(dev, pa->adev[a].samples_per_sec); if(err) { if(err == paInvalidSampleRate) list_supported_sample_rates(dev); return -1; } err = Pa_OpenStream(&dev->inStream, &dev->inputParameters, NULL, pa->adev[a].samples_per_sec, dev->inbuf_frames_per_buffer, 0, paInput16CB, dev ); if( err != paNoError ) { dw_printf( "PortAudio OpenStream (input) Error: %s\n", Pa_GetErrorText(err)); return -1; } err = Pa_OpenStream(&dev->outStream, NULL, &dev->outputParameters, // pa->adev[a].samples_per_sec, framesPerBuffer, 0, paOutput16CB, dev ); pa->adev[a].samples_per_sec, dev->outbuf_frames_per_buffer, 0, NULL, dev ); if( err != paNoError ) { dw_printf( "PortAudio OpenStream (output) Error: %s\n", Pa_GetErrorText(err)); return -1; } dev->input_finished = paContinue; dev->output_finished = paContinue; return buffer_size; } /*------------------------------------------------------------------ * * Name: audio_get * * Purpose: Get one byte from the audio device. * * Inputs: a - Our number for audio device. * * Returns: 0 - 255 for a valid sample. * -1 for any type of error. * * Description: The caller must deal with the details of mono/stereo * and number of bytes per sample. * * This will wait if no data is currently available. * *----------------------------------------------------------------*/ // Use hot attribute for all functions called for every audio sample. __attribute__((hot)) int audio_get (int a) { int n; int retries = 0; #if DEBUGx text_color_set(DW_COLOR_DEBUG); dw_printf ("audio_get():\n"); #endif assert (adev[a].inbuf_size_in_bytes >= 100 && adev[a].inbuf_size_in_bytes <= 32768); switch (adev[a].g_audio_in_type) { /* * Soundcard - PortAudio */ case AUDIO_IN_TYPE_SOUNDCARD: while (adev[a].inbuf_next >= adev[a].inbuf_len) { assert (adev[a].inStream != NULL); #if DEBUGx text_color_set(DW_COLOR_DEBUG); dw_printf ("audio_get(): readi asking for %d frames\n", adev[a].inbuf_size_in_bytes / adev[a].bytes_per_frame); #endif if(adev[a].inbuf_len >= adev[a].inbuf_size_in_bytes) { adev[a].inbuf_len = 0; adev[a].inbuf_next = 0; } pthread_mutex_lock(&adev[a].input_mutex); pthread_cond_wait(&adev[a].input_cond, &adev[a].input_mutex); pthread_mutex_unlock(&adev[a].input_mutex); n = adev[a].inbuf_len / adev[a].inbuf_bytes_per_frame; #if DEBUGx text_color_set(DW_COLOR_DEBUG); dw_printf ("audio_get(): readi asked for %d and got %d frames\n", adev[a].inbuf_size_in_bytes / adev[a].bytes_per_frame, n); #endif if (n > 0) { /* Success */ adev[a].inbuf_len = n * adev[a].inbuf_bytes_per_frame; /* convert to number of bytes */ adev[a].inbuf_next = 0; audio_stats (a, save_audio_config_p->adev[a].num_channels, n, save_audio_config_p->statistics_interval); } else if (n == 0) { /* Didn't expect this, but it's not a problem. */ /* Wait a little while and try again. */ text_color_set(DW_COLOR_ERROR); dw_printf ("[%s], Audio input got zero bytes\n", __func__); SLEEP_MS(10); adev[a].inbuf_len = 0; adev[a].inbuf_next = 0; } else { /* Error */ // TODO: Needs more study and testing. // TODO: print n. should snd_strerror use n or errno? // Audio input device error: Unknown error text_color_set(DW_COLOR_ERROR); dw_printf ("Audio input device %d error\n", a); audio_stats (a, save_audio_config_p->adev[a].num_channels, 0, save_audio_config_p->statistics_interval); /* Try to recover a few times and eventually give up. */ if (++retries > 10) { adev[a].inbuf_len = 0; adev[a].inbuf_next = 0; return (-1); } if (n == -EPIPE) { /* EPIPE means overrun */ //snd_pcm_recover (adev[a].audio_in_handle, n, 1); } else { /* Could be some temporary condition. */ /* Wait a little then try again. */ /* Sometimes I get "Resource temporarily available" */ /* when the Update Manager decides to run. */ SLEEP_MS (250); //snd_pcm_recover (adev[a].audio_in_handle, n, 1); } } } break; /* * UDP. */ case AUDIO_IN_TYPE_SDR_UDP: while (adev[a].inbuf_next >= adev[a].inbuf_len) { int res; assert (adev[a].udp_sock > 0); res = recv(adev[a].udp_sock, adev[a].inbuf_ptr, adev[a].inbuf_size_in_bytes, 0); if (res < 0) { text_color_set(DW_COLOR_ERROR); dw_printf ("Can't read from udp socket, res=%d", res); adev[a].inbuf_len = 0; adev[a].inbuf_next = 0; audio_stats (a, save_audio_config_p->adev[a].num_channels, 0, save_audio_config_p->statistics_interval); return (-1); } adev[a].inbuf_len = res; adev[a].inbuf_next = 0; audio_stats (a, save_audio_config_p->adev[a].num_channels, res / (save_audio_config_p->adev[a].num_channels * save_audio_config_p->adev[a].bits_per_sample / 8), save_audio_config_p->statistics_interval); } break; /* * stdin. */ case AUDIO_IN_TYPE_STDIN: while (adev[a].inbuf_next >= adev[a].inbuf_len) { int res; res = read(STDIN_FILENO, adev[a].inbuf_ptr, (size_t)adev[a].inbuf_size_in_bytes); if (res <= 0) { text_color_set(DW_COLOR_INFO); dw_printf ("\nEnd of file on stdin. Exiting.\n"); exit (0); } audio_stats (a, save_audio_config_p->adev[a].num_channels, res / (save_audio_config_p->adev[a].num_channels * save_audio_config_p->adev[a].bits_per_sample / 8), save_audio_config_p->statistics_interval); adev[a].inbuf_len = res; adev[a].inbuf_next = 0; } break; } if (adev[a].inbuf_next < adev[a].inbuf_len) n = adev[a].inbuf_ptr[adev[a].inbuf_next++]; else n = 0; #if DEBUGx text_color_set(DW_COLOR_DEBUG); dw_printf ("audio_get(): returns %d\n", n); #endif return (n); } /* end audio_get */ /*------------------------------------------------------------------ * * Name: audio_put * * Purpose: Send one byte to the audio device. * * Inputs: a * * c - One byte in range of 0 - 255. * * Returns: Normally non-negative. * -1 for any type of error. * * Description: The caller must deal with the details of mono/stereo * and number of bytes per sample. * * See Also: audio_flush * audio_wait * *----------------------------------------------------------------*/ int audio_put (int a, int c) { int err = 0; size_t frames = 0; //#define __TIMED__ #ifdef __TIMED__ static int count = 0; static double start = 0, end = 0, diff = 0; if(adev[a].outbuf_len == 0) start = dtime_now(); #endif if(c >= 0) { adev[a].outbuf_ptr[adev[a].outbuf_len++] = c; } if ((adev[a].outbuf_len >= adev[a].outbuf_size_in_bytes) || (c < 0)) { frames = adev[a].outbuf_len / adev[a].outbuf_bytes_per_frame; if(frames > 0) { err = Pa_WriteStream(adev[a].outStream, adev[a].outbuf_ptr, frames); } // Getting underflow error for some reason on the first pass. Upon examination of the // audio data revealed no discontinuity in the signal. Time measurements indicate this routine // on this machine (2.8Ghz/Xeon E5462/2008 vintage) can handle ~6 times the current // sample rate (44100/2 bytes per frame). For now, mask the error. // Transfer Time:0.184750080 No of Frames:56264 Per frame:0.000003284 speed:6.905695 if ((err != paNoError) && (err != paOutputUnderflowed)) { text_color_set(DW_COLOR_ERROR); dw_printf ("[%s] Audio Output Error: %s\n", __func__, Pa_GetErrorText(err)); } #ifdef __TIMED__ count += frames; if(c < 0) { // When the Ax25 frames are flushed. end = dtime_now(); diff = end - start; if(count) dw_printf ("Transfer Time:%3.9f No of Frames:%d Per frame:%3.9f speed:%f\n", diff, count, diff/(count * 1.0), (1.0/44100.0)/(diff/(count * 1.0))); count = 0; } #endif adev[a].outbuf_len = 0; adev[a].outbuf_next = 0; } return (0); } /*------------------------------------------------------------------ * * Name: audio_flush * * Purpose: Push out any partially filled output buffer. * * Returns: Normally non-negative. * -1 for any type of error. * * See Also: audio_flush * audio_wait * *----------------------------------------------------------------*/ int audio_flush (int a) { audio_put(a, -1); return 0; } /* end audio_flush */ /*------------------------------------------------------------------ * * Name: audio_wait * * Purpose: Finish up audio output before turning PTT off. * * Inputs: a - Index for audio device (not channel!) * * Returns: None. * * Description: Flush out any partially filled audio output buffer. * Wait until all the queued up audio out has been played. * Take any other necessary actions to stop audio output. * * In an ideal world: * * We would like to ask the hardware when all the queued * up sound has actually come out the speaker. * * In reality: * * This has been found to be less than reliable in practice. * * Caller does the following: * * (1) Make note of when PTT is turned on. * (2) Calculate how long it will take to transmit the * frame including TXDELAY, frame (including * "flags", data, FCS and bit stuffing), and TXTAIL. * (3) Call this function, which might or might not wait long enough. * (4) Add (1) and (2) resulting in when PTT should be turned off. * (5) Take difference between current time and desired PPT off time * and wait for additoinal time if required. * *----------------------------------------------------------------*/ void audio_wait (int a) { audio_flush(a); #if DEBUG text_color_set(DW_COLOR_DEBUG); dw_printf ("audio_wait(): after sync, status=%d\n", err); #endif } /* end audio_wait */ /*------------------------------------------------------------------ * * Name: audio_close * * Purpose: Close the audio device(s). * * Returns: Normally non-negative. * -1 for any type of error. * * *----------------------------------------------------------------*/ int audio_close (void) { int err = 0; int a; for (a = 0; a < MAX_ADEVS; a++) { if(adev[a].g_audio_in_type == AUDIO_IN_TYPE_SOUNDCARD) { audio_wait (a); if (adev[a].inStream != NULL) { pthread_mutex_destroy(&adev[a].input_mutex); pthread_cond_destroy(&adev[a].input_cond); err |= (int) Pa_CloseStream(adev[a].inStream); } if(adev[a].outStream != NULL) { pthread_mutex_destroy(&adev[a].output_mutex); pthread_cond_destroy(&adev[a].output_cond); err |= (int) Pa_CloseStream(adev[a].outStream); } err |= (int) Pa_Terminate(); } if(adev[a].inbuf_ptr) free (adev[a].inbuf_ptr); if(adev[a].outbuf_ptr) free (adev[a].outbuf_ptr); adev[a].inbuf_size_in_bytes = 0; adev[a].inbuf_ptr = NULL; adev[a].inbuf_len = 0; adev[a].inbuf_next = 0; adev[a].outbuf_size_in_bytes = 0; adev[a].outbuf_ptr = NULL; adev[a].outbuf_len = 0; adev[a].outbuf_next = 0; } if(err < 0) err = -1; return (err); } /* end audio_close */ /* end audio_portaudio.c */ #endif // USE_PORTAUDIO