| J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2003-2007 Sun Microsystems, Inc. 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. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | // define this with a later version of ALSA than 0.9.0rc3 |
| 27 | #define ALSA_PCM_NEW_HW_PARAMS_API |
| 28 | #include <alsa/asoundlib.h> |
| 29 | #include "Utilities.h" |
| 30 | |
| 31 | #ifndef PLATFORM_API_LINUXOS_ALSA_PCMUTILS_H_INCLUDED |
| 32 | #define PLATFORM_API_LINUXOS_ALSA_PCMUTILS_H_INCLUDED |
| 33 | |
| 34 | // if this is defined, use plughw: devices |
| 35 | #define ALSA_PCM_USE_PLUGHW |
| 36 | //#undef ALSA_PCM_USE_PLUGHW |
| 37 | |
| 38 | |
| 39 | // maximum number of channels that is listed in the formats. If more, than |
| 40 | // just -1 for channel count is used. |
| 41 | #define MAXIMUM_LISTED_CHANNELS 32 |
| 42 | |
| 43 | typedef struct tag_ALSA_AudioDeviceDescription { |
| 44 | int index; // in |
| 45 | int strLen; // in |
| 46 | INT32* deviceID; // out |
| 47 | int* maxSimultaneousLines; // out |
| 48 | char* name; // out |
| 49 | char* vendor; // out |
| 50 | char* description; // out |
| 51 | char* version; // out |
| 52 | } ALSA_AudioDeviceDescription; |
| 53 | |
| 54 | |
| 55 | |
| 56 | int getAudioDeviceCount(); |
| 57 | int getAudioDeviceDescriptionByIndex(ALSA_AudioDeviceDescription* desc); |
| 58 | |
| 59 | // returns ALSA error code, or 0 if successful |
| 60 | int openPCMfromDeviceID(int deviceID, snd_pcm_t** handle, int isSource, int hardware); |
| 61 | |
| 62 | // returns 1 if successful |
| 63 | // enc: 0 for PCM, 1 for ULAW, 2 for ALAW (see DirectAudio.h) |
| 64 | int getFormatFromAlsaFormat(snd_pcm_format_t alsaFormat, |
| 65 | int* sampleSizeInBytes, int* significantBits, |
| 66 | int* isSigned, int* isBigEndian, int* enc); |
| 67 | |
| 68 | int getAlsaFormatFromFormat(snd_pcm_format_t* alsaFormat, |
| 69 | int sampleSizeInBytes, int significantBits, |
| 70 | int isSigned, int isBigEndian, int enc); |
| 71 | |
| 72 | #endif // PLATFORM_API_LINUXOS_ALSA_PCMUTILS_H_INCLUDED |