14a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project/*---------------------------------------------------------------------------* 24a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project * AudioHardwareRecord.c * 34a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project * * 44a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project * Copyright 2007, 2008 Nuance Communciations, Inc. * 54a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project * * 64a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the 'License'); * 74a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project * you may not use this file except in compliance with the License. * 84a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project * * 94a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project * You may obtain a copy of the License at * 104a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 * 114a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project * * 124a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project * Unless required by applicable law or agreed to in writing, software * 134a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project * distributed under the License is distributed on an 'AS IS' BASIS, * 144a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * 154a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project * See the License for the specific language governing permissions and * 164a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project * limitations under the License. * 174a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project * * 184a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project *---------------------------------------------------------------------------*/ 194a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project 204a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project#include <stdlib.h> 214a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project#include <stdio.h> 224a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project#include <limits.h> 234a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project#include <string.h> 244a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project#include <unistd.h> 254a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project#include <sys/select.h> 264a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project#include "audioinwrapper.h" 274a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project 284a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project#define SAMPLING_RATE 8000 294a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project 304a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project#define N_FRAMES_PER_BUFFER 512 /* low-level driver counts in terms of frames, not samples */ 314a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project#define N_TUPLES_PER_FRAME 1 /* tuple: a set of samples (set of 1 if mono, set of 2 if stereo */ 324a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project 334a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project#define N_CHANNELS_PER_TUPLE 1 /* 1: mono; 2: stereo */ 344a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project 354a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project#define N_TUPLES_PER_BUFFER (N_FRAMES_PER_BUFFER * N_TUPLES_PER_FRAME) 364a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project#define N_SAMPLES_PER_BUFFER (N_TUPLES_PER_BUFFER * N_CHANNELS_PER_TUPLE) 374a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project 384a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project#define N_RECORDINGS 1000 394a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project#define N_SECONDS_TO_RECORD 5 404a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project#define N_SAMPLES_TO_RECORD (SAMPLING_RATE * N_SECONDS_TO_RECORD * N_CHANNELS_PER_TUPLE) 414a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project 424a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Projecttypedef short typeSample; 434a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project 444a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project/* store incoming samples here, then write to file at the end */ 454a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source ProjecttypeSample recordedSamples[N_SAMPLES_TO_RECORD]; 464a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project 474a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project//#define AUDIO_SET_FORMAT_ONCE_ONLY 484a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project 494a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Projectint main(int argc, char* argv[]) 504a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project{ 514a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project int rc; 524a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project unsigned int iFile; 534a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project 544a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project const unsigned short delay_ms = 2000; //1800 //340; 554a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project 564a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project printf("For debugging, this is configured to sleep for %u milliseconds before AudioSetInputFormat(%u)\n\n", delay_ms, SAMPLING_RATE); 574a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project 584a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project#if defined(AUDIO_SET_FORMAT_ONCE_ONLY) 594a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project rc = AudioSetInputFormat(SAMPLING_RATE, N_CHANNELS_PER_TUPLE); 604a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project if (rc != 0) 614a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project { 624a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project printf("ERROR: AudioSetInputFormat() returns %d\n", rc); 634a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project exit(1); 644a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project } 654a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project#endif 664a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project 674a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project for (iFile = 1; iFile <= N_RECORDINGS; iFile++) 684a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project { 694a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project unsigned int i; 704a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project 714a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project#if !defined(AUDIO_SET_FORMAT_ONCE_ONLY) 724a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project { 734a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project // see how much of a delay is needed to get rid of error when calling 744a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project // AudioSetInputFormat() immediately after AudioClose() 754a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project struct timeval sleep_time_struct; 764a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project sleep_time_struct.tv_sec = 0; 774a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project sleep_time_struct.tv_usec = delay_ms*1000; // microseconds 784a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project select(0, NULL, NULL, NULL, &sleep_time_struct); 794a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project } 804a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project 814a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project rc = AudioSetInputFormat(SAMPLING_RATE, N_CHANNELS_PER_TUPLE); 824a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project if (rc != 0) 834a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project { 844a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project printf("ERROR: AudioSetInputFormat() returns %d\n", rc); 854a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project exit(1); 864a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project } 874a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project#endif 884a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project 894a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project printf("Recording: %3d of %3d\n", iFile, N_RECORDINGS); 904a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project 914a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project memset(recordedSamples, 0, N_SAMPLES_TO_RECORD * sizeof(typeSample)); 924a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project 934a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project rc = AudioOpen(); 944a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project if (rc < 0) 954a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project { 964a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project printf("ERROR: AudioOpen() returns %d (device handle/ID)\n", rc); 974a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project exit(1); 984a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project } 994a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project 1004a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project i = 0; 1014a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project while (i <= N_SAMPLES_TO_RECORD - N_SAMPLES_PER_BUFFER) 1024a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project { 1034a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project rc = AudioRead(&(recordedSamples[i]), N_FRAMES_PER_BUFFER); 1044a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project if (rc > 0) 1054a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project i += (rc * N_TUPLES_PER_FRAME * N_CHANNELS_PER_TUPLE); 1064a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project else 1074a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project printf("ERROR: AudioRead() returns %d\n", rc); 1084a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project } 1094a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project 1104a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project rc = AudioClose(); 1114a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project if (rc != 0) 1124a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project { 1134a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project printf("ERROR: AudioClose() returns %d\n", rc); 1144a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project exit(1); 1154a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project } 1164a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project 1174a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project /* write to file */ 1184a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project#if 0 1194a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project { 1204a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project FILE *fpOutput; 1214a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project char szFilename[256]; 1224a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project 1234a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project sprintf(szFilename, "output_AudioHardwareRecordLoop_%03d.pcm", iFile); 1244a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project 1254a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project fpOutput = fopen(szFilename, "wb"); 1264a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project if (fpOutput == NULL) 1274a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project { 1284a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project printf("ERROR: cannot create '%s'\n", szFilename); 1294a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project exit(1); 1304a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project } 1314a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project fwrite(recordedSamples, sizeof(typeSample), i, fpOutput); 1324a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project fclose(fpOutput); 1334a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project 1344a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project printf("Recording: saved '%s'\n", szFilename); 1354a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project } 1364a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project#endif 1374a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project } 1384a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project 1394a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project return 0; 1404a68b3365c8c50aa93505e99ead2565ab73dcdb0The Android Open Source Project} 141