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Diffstat (limited to 'src/airecord.cc')
| -rw-r--r-- | src/airecord.cc | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/src/airecord.cc b/src/airecord.cc new file mode 100644 index 0000000..8a40edc --- /dev/null +++ b/src/airecord.cc @@ -0,0 +1,146 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * audioin.h + * + * Fri Apr 8 15:37:21 CEST 2011 + * Copyright 2011 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of libaudioin. + * + * libaudioin 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. + * + * libaudioin 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 libaudioin; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include "audioin.h" + +int main(int argc, char *argv[]) +{ + int err = 0; + + if(argc < 4) { + printf("Usage %s samplerate num_channels output_file\n", argv[0]); + return 1; + } + + int samplerate = atoi(argv[1]); + int channels = atoi(argv[2]); + char *fname = argv[3]; + + struct ai_t *ai = ai_init(&err, "default", "Capture", samplerate, channels); + if(ai == NULL || err) printf("Error: %d\n", err); + + if(!ai) { + printf("Trying alternative mixer interface (not running on an InterCom)\n"); + //ai = ai_init(&err, "default", "H/W Multi", samplerate, channels); + ai = ai_init(&err, "default", "Capture", samplerate, channels); + if(ai == NULL || err) printf("Error: %d\n", err); + } + + /** Chip: IDT 92HD83C1C5 +Simple mixer control 'Master',0 +Simple mixer control 'Headphone',0 +Simple mixer control 'Speaker',0 +Simple mixer control 'Front',0 +Simple mixer control 'Front Mic Jack Mode',0 +Simple mixer control 'Line',0 +Simple mixer control 'Line Jack Mode',0 +Simple mixer control 'Line',1 +Simple mixer control 'Mic',0 +Simple mixer control 'IEC958',0 +Simple mixer control 'IEC958 Default PCM',0 +Simple mixer control 'Capture',0 +Simple mixer control 'Capture',1 +Simple mixer control 'Input Source',0 +Simple mixer control 'Input Source',1 +Simple mixer control 'Internal Mic',0 + **/ + + /** Chip: Realtek ALC662 rev1 +Simple mixer control 'Master',0 +Simple mixer control 'Headphone',0 +Simple mixer control 'Front',0 +Simple mixer control 'Front Mic',0 +Simple mixer control 'Front Mic Boost',0 +Simple mixer control 'Surround',0 +Simple mixer control 'Center',0 +Simple mixer control 'LFE',0 +Simple mixer control 'Line',0 +Simple mixer control 'IEC958',0 +Simple mixer control 'IEC958 Default PCM',0 +Simple mixer control 'Capture',0 +Simple mixer control 'Capture',1 +Simple mixer control 'Auto-Mute Mode',0 +Simple mixer control 'Input Source',0 +Simple mixer control 'Input Source',1 +Simple mixer control 'Rear Mic',0 +Simple mixer control 'Rear Mic Boost',0 + **/ + // 'Capture' record enabled, Input Source: 'Line' + + + + + ai_set_mixer_level(&err, ai, 0, 1.0); + ai_set_mixer_level(&err, ai, 1, 1.0); + + short pcm[4096 * 10]; + FILE *fp = fopen(fname, "w"); + if(!fp) { + printf("Could not write %s\n", fname); + return 1; + } + + for(size_t i = 0; i < 500; i++) { + memset(pcm, 0, sizeof(pcm)); + int r = ai_read(&err, ai, pcm, sizeof(pcm)); + if(r < 0 || err) printf("Error: %d\n", err); + + // for(int j = 0; j < 20; j++) pcm[j] = 0; + + int bufsz = r / (sizeof(short) * channels) ; + int offset = 160 / (1024 / bufsz); + int len = 16; + short start[] = { + pcm[ (bufsz - offset - 2) * 2], + pcm[ (bufsz - offset - 2) * 2 + 1] + }; + short stop[] = { + pcm[ (bufsz - offset + len + 1) * 2], + pcm[ (bufsz - offset + len + 1) * 2 + 1] + }; + for(int j = 0; j < len; j++) { + float d = (float)j / (float)len; + pcm[(bufsz - offset + j - 1) * 2] = start[0] * (1 - d) + stop[0] * d; + pcm[(bufsz - offset + j - 1) * 2 + 1] = start[1] * (1 - d) + stop[1] * d; + } + /* + short m = 32000; + pcm[(bufsz - offset) * 2] = m; + pcm[(bufsz - offset) * 2 + 1] = m; + pcm[(bufsz - offset + len) * 2] = m; + pcm[(bufsz - offset + len) * 2 + 1] = m; + */ + if(fwrite(pcm, r, 1, fp)) {} + } + fclose(fp); + ai_close(&err, ai); + + return 0; +} |