diff options
Diffstat (limited to 'src/audioin.h')
| -rw-r--r-- | src/audioin.h | 130 |
1 files changed, 0 insertions, 130 deletions
diff --git a/src/audioin.h b/src/audioin.h deleted file mode 100644 index fe12fa4..0000000 --- a/src/audioin.h +++ /dev/null @@ -1,130 +0,0 @@ -/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ -/*************************************************************************** - * audioin.h - * - * Wed Sep 30 11:36:18 CEST 2009 - * 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. - */ -#ifndef __LIBAUDIOIN_AUDIOIN_H__ -#define __LIBAUDIOIN_AUDIOIN_H__ - -#ifdef __cplusplus -extern "C" { -#endif - -#define NO_ERROR 0 - -#define OUT_OF_MEMORY 101 -#define MISSING_HANDLE 102 - -#define COULD_NOT_OPEN_DEVICE 203 -#define COULD_NOT_SET_HW_PARAMS 204 -#define COULD_NOT_INIT_PARAMS 205 -#define COULD_NOT_SET_ACCESS_MODE 206 -#define COULD_NOT_SET_FORMAT 207 -#define COULD_NOT_SET_CHANNELS 208 -#define COULD_NOT_SET_SAMPLE_RATE 209 -#define COULD_NOT_SET_PERIOD_SIZE 210 - -#define BUFFER_TOO_SMALL 305 -#define BUFFER_OVERRUN 306 -#define READ_ERROR 307 -#define SHORT_READ 308 - -#define MIXER_INIT_FAILED 400 - -#define MIXER_NOT_INITIALISED 401 -#define INVALID_MIXER_LEVEL 402 -#define INVALID_CHANNEL_NUMBER 403 -#define COULD_NOT_SET_MIXER_LEVEL 404 - -struct ai_t; - -/** - * Initalise the AudioIn library and connect to a soundcard and a mixer. - * @param err An int pointer containing error value if function is unsuccessful. - * @param device A string containing the device name to connect to. A list - * possible devices can be seen with the 'aplay -L' command. The device - * "default" are usually the one needed. - * @param mixer A string containing the mixer interface to connect to. A list - * of possible interfaces can be seen with the 'amixer scontrols' command. - * Usually the interface "Capture" is the one needed. - * @param samplerate An unsigned integer containing the desired samplerate in - * Hertz. - * @param channels An unsigned integer containing the desired number of - * channels. The channel samples will be interleaved in the data stream whe - * ai_read is called. - * @return A pointer to the newly created handle or NULL on failure. - */ -struct ai_t *ai_init(int *err, const char *device, const char *mixer, - unsigned int samplerate, unsigned int channels); - -/** - * Read samples from the soundcard. - * @param err An int pointer containing error value if function is unsuccessful. - * @param handle A pointer to the handle to be used. - * @param maxsize The maximum number of bytes (not samples) to read. - * @return Returns the number of bytes (not samples) read or -1 on error. - * NOTE: to get the number of samples read, devide the return value with the - * sample width (2 bytes / 16 bits) and the number of interleaved channels - * (usually 1 or 2). - */ -int ai_read(int *err, struct ai_t *handle, void *pcm, unsigned int maxsize); - -/** - * Adjust channel mixer levels. - * @param err An int pointer containing error value if function is unsuccessful. - * @param handle A pointer to the handle to be used. - * @param channel The channel number to set mixer level of. 0 or 1 should be - * used for the two channels of a stereo interface. - * @param level The mixer level to set, ranging from 0.0 to 1.0 where 0.0 is - * mute and 1.0 is maximum gain. - * @return Returns -1 on error 0 otherwise. - */ -int ai_set_mixer_level(int *err, struct ai_t *handle, unsigned int channel, - float level); - -/** - * Get actual samplerate. - * The samplerate set in ai_init may or may not match a possible samplerate for - * the audio hardware and therefore the ALSA library might decide to use another - * samplerate than the one specified. - * This function can be called to obtain the actual samplerate that the hardware - * has been configured to use. - * @param err An int pointer containing error value if function is unsuccessful. - * @param handle A pointer to the handle to be used. - * @return The samplerate as an integer or -1 on error. - */ -int ai_get_samplerate(int *err, struct ai_t *handle); - -/** - * Close and free the handle. - * @param err An int pointer containing error value if function is unsuccessful. - * @param handle A pointer to the handle to be closed. - */ -void ai_close(int *err, struct ai_t *handle); - -#ifdef __cplusplus -} -#endif - -#endif/*__LIBAUDIOIN_AUDIOIN_H__*/ |