mirror of
https://github.com/bluekitchen/btstack.git
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220 lines
6.7 KiB
C
220 lines
6.7 KiB
C
/*
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* Copyright (C) 2016 BlueKitchen GmbH
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the copyright holders nor the names of
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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* 4. Any redistribution, use, or modification is done solely for
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* personal benefit and not for any commercial purpose or for
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* monetary gain.
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*
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* THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS
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* RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* Please inquire about commercial licensing options at
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* contact@bluekitchen-gmbh.com
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*
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*/
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/*
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* sco_demo_util.c - send/receive test data via SCO, used by hfp_*_demo and hsp_*_demo
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*/
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#include "sco_demo_util.h"
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#include <stdio.h>
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// configure test mode
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#define SCO_DEMO_MODE_SINE 0
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#define SCO_DEMO_MODE_ASCII 1
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#define SCO_DEMO_MODE_COUNTER 2
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// SCO demo configuration
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#define SCO_DEMO_MODE SCO_DEMO_MODE_SINE
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#define SCO_REPORT_PERIOD 100
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// portaudio config
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#define NUM_CHANNELS 1
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#define SAMPLE_RATE 8000
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#define FRAMES_PER_BUFFER 24
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#define PA_SAMPLE_TYPE paInt8
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#if defined(HAVE_PORTAUDIO) && (SCO_DEMO_MODE == SCO_DEMO_MODE_SINE)
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#define USE_PORTAUDIO
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#endif
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#ifdef USE_PORTAUDIO
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#include <portaudio.h>
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// portaudio globals
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static PaStream * stream;
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#endif
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#if SCO_DEMO_MODE == SCO_DEMO_MODE_SINE
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// input signal: pre-computed sine wave, 160 Hz
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static const uint8_t sine[] = {
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0, 15, 31, 46, 61, 74, 86, 97, 107, 114,
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120, 124, 126, 126, 124, 120, 114, 107, 97, 86,
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74, 61, 46, 31, 15, 0, 241, 225, 210, 195,
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182, 170, 159, 149, 142, 136, 132, 130, 130, 132,
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136, 142, 149, 159, 170, 182, 195, 210, 225, 241,
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};
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#endif
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static int phase;
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void sco_demo_init(void){
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// status
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#if SCO_DEMO_MODE == SCO_DEMO_MODE_SINE
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#ifdef HAVE_PORTAUDIO
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printf("SCO Demo: Sending sine wave, audio output via portaudio.\n");
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#else
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printf("SCO Demo: Sending sine wave, hexdump received data.\n");
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#endif
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#endif
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#if SCO_DEMO_MODE == SCO_DEMO_MODE_ASCII
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printf("SCO Demo: Sending ASCII blocks, print received data.\n");
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#endif
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#if SCO_DEMO_MODE == SCO_DEMO_MODE_COUNTER
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printf("SCO Demo: Sending counter value, hexdump received data.\n");
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#endif
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#ifdef USE_PORTAUDIO
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int err;
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PaStreamParameters outputParameters;
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/* -- initialize PortAudio -- */
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err = Pa_Initialize();
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if( err != paNoError ) return;
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/* -- setup input and output -- */
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outputParameters.device = Pa_GetDefaultOutputDevice(); /* default output device */
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outputParameters.channelCount = NUM_CHANNELS;
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outputParameters.sampleFormat = PA_SAMPLE_TYPE;
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outputParameters.suggestedLatency = Pa_GetDeviceInfo( outputParameters.device )->defaultHighOutputLatency;
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outputParameters.hostApiSpecificStreamInfo = NULL;
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/* -- setup stream -- */
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err = Pa_OpenStream(
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&stream,
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NULL, // &inputParameters,
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&outputParameters,
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SAMPLE_RATE,
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FRAMES_PER_BUFFER,
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paClipOff, /* we won't output out of range samples so don't bother clipping them */
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NULL, /* no callback, use blocking API */
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NULL ); /* no callback, so no callback userData */
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if( err != paNoError ) return;
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/* -- start stream -- */
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err = Pa_StartStream( stream );
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if( err != paNoError ) return;
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#endif
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#if SCO_DEMO_MODE != SCO_DEMO_MODE_SINE
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hci_set_sco_voice_setting(0x03); // linear, unsigned, 8-bit, transparent
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#endif
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#if SCO_DEMO_MODE == SCO_DEMO_MODE_ASCII
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phase = 'a';
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#endif
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}
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void sco_demo_send(hci_con_handle_t sco_handle){
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if (!sco_handle) return;
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const int sco_packet_length = 24 + 3; // hci_get_sco_packet_length();
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const int sco_payload_length = sco_packet_length - 3;
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hci_reserve_packet_buffer();
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uint8_t * sco_packet = hci_get_outgoing_packet_buffer();
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// set handle + flags
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little_endian_store_16(sco_packet, 0, sco_handle);
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// set len
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sco_packet[2] = sco_payload_length;
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const int frames_per_packet = sco_payload_length; // for 8-bit data. for 16-bit data it's /2
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#if SCO_DEMO_MODE == SCO_DEMO_MODE_SINE
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int i;
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for (i=0;i<frames_per_packet;i++){
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sco_packet[3+i] = sine[phase];
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phase++;
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if (phase >= sizeof(sine)) phase = 0;
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}
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#else
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#if SCO_DEMO_MODE == SCO_DEMO_MODE_ASCII
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memset(&sco_packet[3], phase++, frames_per_packet);
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if (phase > 'z') phase = 'a';
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#else
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for (i=0;i<frames_per_packet;i++){
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sco_packet[3+i] = phase++;
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}
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#endif
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#endif
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hci_send_sco_packet_buffer(sco_packet_length);
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// request another send event
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hci_request_sco_can_send_now_event();
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static int count = 0;
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count++;
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if ((count % SCO_REPORT_PERIOD) == 0) printf("SCO: sent %u\n", count);
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}
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/**
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* @brief Process received data
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*/
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void sco_demo_receive(uint8_t * packet, uint16_t size){
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if (packet[1] & 0xf0){
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printf("SCO CRC Error: %x - data: ", packet[1] >> 4);
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printf_hexdump(&packet[3], size-3);
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return;
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}
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#if SCO_DEMO_MODE == SCO_DEMO_MODE_SINE
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#ifdef USE_PORTAUDIO
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uint32_t start = btstack_run_loop_get_time_ms();
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Pa_WriteStream( stream, &packet[3], size -3);
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uint32_t end = btstack_run_loop_get_time_ms();
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if (end - start > 5){
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printf("Portaudio: write stream took %u ms\n", end - start);
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}
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#else
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printf_hexdump(&packet[3], size-3);
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#endif
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#else
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printf("data: ");
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#if SCO_DEMO_MODE == SCO_DEMO_MODE_ASCII
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int i;
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for (i=3;i<size;i++){
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printf("%c", packet[i]);
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}
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printf("\n");
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#endif
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printf_hexdump(&packet[3], size-3);
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#endif
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static int count = 0;
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count++;
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if ((count % SCO_REPORT_PERIOD) == 0) printf("SCO: received %u\n", count);
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}
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