1 /*

     2  * Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    22  * or visit www.oracle.com if you need additional information or have any

    23  * questions.

    24  */

    25 

    26 // define this with a later version of ALSA than 0.9.0rc3

    27 // (starting from 1.0.0 it became default behaviour)

    28 #define ALSA_PCM_NEW_HW_PARAMS_API

    29 #include <alsa/asoundlib.h>

    30 #include "Utilities.h"

    31 

    32 #ifndef PLATFORM_API_BSDOS_ALSA_PCMUTILS_H_INCLUDED

    33 #define PLATFORM_API_BSDOS_ALSA_PCMUTILS_H_INCLUDED

    34 

    35 // if this is defined, use plughw: devices

    36 #define ALSA_PCM_USE_PLUGHW

    37 //#undef ALSA_PCM_USE_PLUGHW

    38 

    39 

    40 // maximum number of channels that is listed in the formats. If more, than

    41 // just -1 for channel count is used.

    42 #define MAXIMUM_LISTED_CHANNELS 32

    43 

    44 typedef struct tag_ALSA_AudioDeviceDescription {

    45     int index;          // in

    46     int strLen;         // in

    47     INT32* deviceID;    // out

    48     int* maxSimultaneousLines; // out

    49     char* name;         // out

    50     char* vendor;       // out

    51     char* description;  // out

    52     char* version;      // out

    53 } ALSA_AudioDeviceDescription;

    54 

    55 

    56 

    57 int getAudioDeviceCount();

    58 int getAudioDeviceDescriptionByIndex(ALSA_AudioDeviceDescription* desc);

    59 

    60 // returns ALSA error code, or 0 if successful

    61 int openPCMfromDeviceID(int deviceID, snd_pcm_t** handle, int isSource, int hardware);

    62 

    63 // returns 1 if successful

    64 // enc: 0 for PCM, 1 for ULAW, 2 for ALAW (see DirectAudio.h)

    65 int getFormatFromAlsaFormat(snd_pcm_format_t alsaFormat,

    66                             int* sampleSizeInBytes, int* significantBits,

    67                             int* isSigned, int* isBigEndian, int* enc);

    68 

    69 int getAlsaFormatFromFormat(snd_pcm_format_t* alsaFormat,

    70                             int sampleSizeInBytes, int significantBits,

    71                             int isSigned, int isBigEndian, int enc);

    72 

    73 #endif // PLATFORM_API_BSDOS_ALSA_PCMUTILS_H_INCLUDED