| /* |
| * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code 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 |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| // define this with a later version of ALSA than 0.9.0rc3 |
| // (starting from 1.0.0 it became default behaviour) |
| #define ALSA_PCM_NEW_HW_PARAMS_API |
| #include <alsa/asoundlib.h> |
| #include "Utilities.h" |
| |
| #ifndef PLATFORM_API_LINUXOS_ALSA_PCMUTILS_H_INCLUDED |
| #define PLATFORM_API_LINUXOS_ALSA_PCMUTILS_H_INCLUDED |
| |
| // if this is defined, use plughw: devices |
| #define ALSA_PCM_USE_PLUGHW |
| //#undef ALSA_PCM_USE_PLUGHW |
| |
| |
| // maximum number of channels that is listed in the formats. If more, than |
| // just -1 for channel count is used. |
| #define MAXIMUM_LISTED_CHANNELS 32 |
| |
| typedef struct tag_ALSA_AudioDeviceDescription { |
| int index; // in |
| int strLen; // in |
| INT32* deviceID; // out |
| int* maxSimultaneousLines; // out |
| char* name; // out |
| char* vendor; // out |
| char* description; // out |
| char* version; // out |
| } ALSA_AudioDeviceDescription; |
| |
| |
| |
| int getAudioDeviceCount(); |
| int getAudioDeviceDescriptionByIndex(ALSA_AudioDeviceDescription* desc); |
| |
| // returns ALSA error code, or 0 if successful |
| int openPCMfromDeviceID(int deviceID, snd_pcm_t** handle, int isSource, int hardware); |
| |
| // returns 1 if successful |
| // enc: 0 for PCM, 1 for ULAW, 2 for ALAW (see DirectAudio.h) |
| int getFormatFromAlsaFormat(snd_pcm_format_t alsaFormat, |
| int* sampleSizeInBytes, int* significantBits, |
| int* isSigned, int* isBigEndian, int* enc); |
| |
| int getAlsaFormatFromFormat(snd_pcm_format_t* alsaFormat, |
| int sampleSizeInBytes, int significantBits, |
| int isSigned, int isBigEndian, int enc); |
| |
| #endif // PLATFORM_API_LINUXOS_ALSA_PCMUTILS_H_INCLUDED |