| 
									
										
										
										
											2011-12-23 10:36:37 +05:30
										 |  |  | /*
 | 
					
						
							|  |  |  |  *  compress_params.h - codec types and parameters for compressed data | 
					
						
							|  |  |  |  *  streaming interface | 
					
						
							|  |  |  |  * | 
					
						
							|  |  |  |  *  Copyright (C) 2011 Intel Corporation | 
					
						
							|  |  |  |  *  Authors:	Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> | 
					
						
							|  |  |  |  *              Vinod Koul <vinod.koul@linux.intel.com> | 
					
						
							|  |  |  |  * | 
					
						
							|  |  |  |  *  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | 
					
						
							|  |  |  |  * | 
					
						
							|  |  |  |  *  This program 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; version 2 of the License. | 
					
						
							|  |  |  |  * | 
					
						
							|  |  |  |  *  This program 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 this program; if not, write to the Free Software Foundation, Inc., | 
					
						
							|  |  |  |  *  59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. | 
					
						
							|  |  |  |  * | 
					
						
							|  |  |  |  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | 
					
						
							|  |  |  |  * | 
					
						
							|  |  |  |  * The definitions in this file are derived from the OpenMAX AL version 1.1 | 
					
						
							|  |  |  |  * and OpenMAX IL v 1.1.2 header files which contain the copyright notice below. | 
					
						
							|  |  |  |  * | 
					
						
							|  |  |  |  * Copyright (c) 2007-2010 The Khronos Group Inc. | 
					
						
							|  |  |  |  * | 
					
						
							|  |  |  |  * Permission is hereby granted, free of charge, to any person obtaining | 
					
						
							|  |  |  |  * a copy of this software and/or associated documentation files (the | 
					
						
							|  |  |  |  * "Materials "), to deal in the Materials without restriction, including | 
					
						
							|  |  |  |  * without limitation the rights to use, copy, modify, merge, publish, | 
					
						
							|  |  |  |  * distribute, sublicense, and/or sell copies of the Materials, and to | 
					
						
							|  |  |  |  * permit persons to whom the Materials are furnished to do so, subject to | 
					
						
							|  |  |  |  * the following conditions: | 
					
						
							|  |  |  |  * | 
					
						
							|  |  |  |  * The above copyright notice and this permission notice shall be included | 
					
						
							|  |  |  |  * in all copies or substantial portions of the Materials. | 
					
						
							|  |  |  |  * | 
					
						
							|  |  |  |  * THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | 
					
						
							|  |  |  |  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | 
					
						
							|  |  |  |  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. | 
					
						
							|  |  |  |  * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY | 
					
						
							|  |  |  |  * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, | 
					
						
							|  |  |  |  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE | 
					
						
							|  |  |  |  * MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS. | 
					
						
							|  |  |  |  * | 
					
						
							|  |  |  |  */ | 
					
						
							|  |  |  | #ifndef __SND_COMPRESS_PARAMS_H
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							|  |  |  | #define __SND_COMPRESS_PARAMS_H
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							|  |  |  | 
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							| 
									
										
										
										
											2012-03-23 15:01:51 -07:00
										 |  |  | #include <linux/types.h>
 | 
					
						
							|  |  |  | 
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							| 
									
										
										
										
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										 |  |  | /* AUDIO CODECS SUPPORTED */ | 
					
						
							|  |  |  | #define MAX_NUM_CODECS 32
 | 
					
						
							|  |  |  | #define MAX_NUM_CODEC_DESCRIPTORS 32
 | 
					
						
							|  |  |  | #define MAX_NUM_BITRATES 32
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										 |  |  | #define MAX_NUM_SAMPLE_RATES 32
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										 |  |  | 
 | 
					
						
							|  |  |  | /* Codecs are listed linearly to allow for extensibility */ | 
					
						
							|  |  |  | #define SND_AUDIOCODEC_PCM                   ((__u32) 0x00000001)
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							|  |  |  | #define SND_AUDIOCODEC_MP3                   ((__u32) 0x00000002)
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							|  |  |  | #define SND_AUDIOCODEC_AMR                   ((__u32) 0x00000003)
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							|  |  |  | #define SND_AUDIOCODEC_AMRWB                 ((__u32) 0x00000004)
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							|  |  |  | #define SND_AUDIOCODEC_AMRWBPLUS             ((__u32) 0x00000005)
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							|  |  |  | #define SND_AUDIOCODEC_AAC                   ((__u32) 0x00000006)
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							|  |  |  | #define SND_AUDIOCODEC_WMA                   ((__u32) 0x00000007)
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							|  |  |  | #define SND_AUDIOCODEC_REAL                  ((__u32) 0x00000008)
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							|  |  |  | #define SND_AUDIOCODEC_VORBIS                ((__u32) 0x00000009)
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							|  |  |  | #define SND_AUDIOCODEC_FLAC                  ((__u32) 0x0000000A)
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							|  |  |  | #define SND_AUDIOCODEC_IEC61937              ((__u32) 0x0000000B)
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							|  |  |  | #define SND_AUDIOCODEC_G723_1                ((__u32) 0x0000000C)
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							|  |  |  | #define SND_AUDIOCODEC_G729                  ((__u32) 0x0000000D)
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										 |  |  | #define SND_AUDIOCODEC_MAX                   SND_AUDIOCODEC_G729
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										 |  |  | 
 | 
					
						
							|  |  |  | /*
 | 
					
						
							|  |  |  |  * Profile and modes are listed with bit masks. This allows for a | 
					
						
							|  |  |  |  * more compact representation of fields that will not evolve | 
					
						
							|  |  |  |  * (in contrast to the list of codecs) | 
					
						
							|  |  |  |  */ | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | #define SND_AUDIOPROFILE_PCM                 ((__u32) 0x00000001)
 | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | /* MP3 modes are only useful for encoders */ | 
					
						
							|  |  |  | #define SND_AUDIOCHANMODE_MP3_MONO           ((__u32) 0x00000001)
 | 
					
						
							|  |  |  | #define SND_AUDIOCHANMODE_MP3_STEREO         ((__u32) 0x00000002)
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							|  |  |  | #define SND_AUDIOCHANMODE_MP3_JOINTSTEREO    ((__u32) 0x00000004)
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							|  |  |  | #define SND_AUDIOCHANMODE_MP3_DUAL           ((__u32) 0x00000008)
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							|  |  |  | 
 | 
					
						
							|  |  |  | #define SND_AUDIOPROFILE_AMR                 ((__u32) 0x00000001)
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							|  |  |  | 
 | 
					
						
							|  |  |  | /* AMR modes are only useful for encoders */ | 
					
						
							|  |  |  | #define SND_AUDIOMODE_AMR_DTX_OFF            ((__u32) 0x00000001)
 | 
					
						
							|  |  |  | #define SND_AUDIOMODE_AMR_VAD1               ((__u32) 0x00000002)
 | 
					
						
							|  |  |  | #define SND_AUDIOMODE_AMR_VAD2               ((__u32) 0x00000004)
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							|  |  |  | 
 | 
					
						
							|  |  |  | #define SND_AUDIOSTREAMFORMAT_UNDEFINED	     ((__u32) 0x00000000)
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							|  |  |  | #define SND_AUDIOSTREAMFORMAT_CONFORMANCE    ((__u32) 0x00000001)
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							|  |  |  | #define SND_AUDIOSTREAMFORMAT_IF1            ((__u32) 0x00000002)
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							|  |  |  | #define SND_AUDIOSTREAMFORMAT_IF2            ((__u32) 0x00000004)
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							|  |  |  | #define SND_AUDIOSTREAMFORMAT_FSF            ((__u32) 0x00000008)
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							|  |  |  | #define SND_AUDIOSTREAMFORMAT_RTPPAYLOAD     ((__u32) 0x00000010)
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							|  |  |  | #define SND_AUDIOSTREAMFORMAT_ITU            ((__u32) 0x00000020)
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							|  |  |  | 
 | 
					
						
							|  |  |  | #define SND_AUDIOPROFILE_AMRWB               ((__u32) 0x00000001)
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							|  |  |  | 
 | 
					
						
							|  |  |  | /* AMRWB modes are only useful for encoders */ | 
					
						
							|  |  |  | #define SND_AUDIOMODE_AMRWB_DTX_OFF          ((__u32) 0x00000001)
 | 
					
						
							|  |  |  | #define SND_AUDIOMODE_AMRWB_VAD1             ((__u32) 0x00000002)
 | 
					
						
							|  |  |  | #define SND_AUDIOMODE_AMRWB_VAD2             ((__u32) 0x00000004)
 | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | #define SND_AUDIOPROFILE_AMRWBPLUS           ((__u32) 0x00000001)
 | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | #define SND_AUDIOPROFILE_AAC                 ((__u32) 0x00000001)
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							|  |  |  | 
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							|  |  |  | /* AAC modes are required for encoders and decoders */ | 
					
						
							|  |  |  | #define SND_AUDIOMODE_AAC_MAIN               ((__u32) 0x00000001)
 | 
					
						
							|  |  |  | #define SND_AUDIOMODE_AAC_LC                 ((__u32) 0x00000002)
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							|  |  |  | #define SND_AUDIOMODE_AAC_SSR                ((__u32) 0x00000004)
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							|  |  |  | #define SND_AUDIOMODE_AAC_LTP                ((__u32) 0x00000008)
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							|  |  |  | #define SND_AUDIOMODE_AAC_HE                 ((__u32) 0x00000010)
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							|  |  |  | #define SND_AUDIOMODE_AAC_SCALABLE           ((__u32) 0x00000020)
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							|  |  |  | #define SND_AUDIOMODE_AAC_ERLC               ((__u32) 0x00000040)
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							|  |  |  | #define SND_AUDIOMODE_AAC_LD                 ((__u32) 0x00000080)
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							|  |  |  | #define SND_AUDIOMODE_AAC_HE_PS              ((__u32) 0x00000100)
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							|  |  |  | #define SND_AUDIOMODE_AAC_HE_MPS             ((__u32) 0x00000200)
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							|  |  |  | 
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							|  |  |  | /* AAC formats are required for encoders and decoders */ | 
					
						
							|  |  |  | #define SND_AUDIOSTREAMFORMAT_MP2ADTS        ((__u32) 0x00000001)
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							|  |  |  | #define SND_AUDIOSTREAMFORMAT_MP4ADTS        ((__u32) 0x00000002)
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							|  |  |  | #define SND_AUDIOSTREAMFORMAT_MP4LOAS        ((__u32) 0x00000004)
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							|  |  |  | #define SND_AUDIOSTREAMFORMAT_MP4LATM        ((__u32) 0x00000008)
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							|  |  |  | #define SND_AUDIOSTREAMFORMAT_ADIF           ((__u32) 0x00000010)
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							|  |  |  | #define SND_AUDIOSTREAMFORMAT_MP4FF          ((__u32) 0x00000020)
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							|  |  |  | #define SND_AUDIOSTREAMFORMAT_RAW            ((__u32) 0x00000040)
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							|  |  |  | 
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							|  |  |  | #define SND_AUDIOPROFILE_WMA7                ((__u32) 0x00000001)
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							|  |  |  | #define SND_AUDIOPROFILE_WMA8                ((__u32) 0x00000002)
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							|  |  |  | #define SND_AUDIOPROFILE_WMA9                ((__u32) 0x00000004)
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							|  |  |  | #define SND_AUDIOPROFILE_WMA10               ((__u32) 0x00000008)
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							|  |  |  | 
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							|  |  |  | #define SND_AUDIOMODE_WMA_LEVEL1             ((__u32) 0x00000001)
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							|  |  |  | #define SND_AUDIOMODE_WMA_LEVEL2             ((__u32) 0x00000002)
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							|  |  |  | #define SND_AUDIOMODE_WMA_LEVEL3             ((__u32) 0x00000004)
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							|  |  |  | #define SND_AUDIOMODE_WMA_LEVEL4             ((__u32) 0x00000008)
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							|  |  |  | #define SND_AUDIOMODE_WMAPRO_LEVELM0         ((__u32) 0x00000010)
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							|  |  |  | #define SND_AUDIOMODE_WMAPRO_LEVELM1         ((__u32) 0x00000020)
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							|  |  |  | #define SND_AUDIOMODE_WMAPRO_LEVELM2         ((__u32) 0x00000040)
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							|  |  |  | #define SND_AUDIOMODE_WMAPRO_LEVELM3         ((__u32) 0x00000080)
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							|  |  |  | 
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							|  |  |  | #define SND_AUDIOSTREAMFORMAT_WMA_ASF        ((__u32) 0x00000001)
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							|  |  |  | /*
 | 
					
						
							|  |  |  |  * Some implementations strip the ASF header and only send ASF packets | 
					
						
							|  |  |  |  * to the DSP | 
					
						
							|  |  |  |  */ | 
					
						
							|  |  |  | #define SND_AUDIOSTREAMFORMAT_WMA_NOASF_HDR  ((__u32) 0x00000002)
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							|  |  |  | 
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							|  |  |  | #define SND_AUDIOPROFILE_REALAUDIO           ((__u32) 0x00000001)
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							|  |  |  | 
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							|  |  |  | #define SND_AUDIOMODE_REALAUDIO_G2           ((__u32) 0x00000001)
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							|  |  |  | #define SND_AUDIOMODE_REALAUDIO_8            ((__u32) 0x00000002)
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							|  |  |  | #define SND_AUDIOMODE_REALAUDIO_10           ((__u32) 0x00000004)
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							|  |  |  | #define SND_AUDIOMODE_REALAUDIO_SURROUND     ((__u32) 0x00000008)
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							|  |  |  | 
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							|  |  |  | #define SND_AUDIOPROFILE_VORBIS              ((__u32) 0x00000001)
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							|  |  |  | 
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							|  |  |  | #define SND_AUDIOMODE_VORBIS                 ((__u32) 0x00000001)
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							|  |  |  | 
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							|  |  |  | #define SND_AUDIOPROFILE_FLAC                ((__u32) 0x00000001)
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							|  |  |  | 
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							|  |  |  | /*
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							|  |  |  |  * Define quality levels for FLAC encoders, from LEVEL0 (fast) | 
					
						
							|  |  |  |  * to LEVEL8 (best) | 
					
						
							|  |  |  |  */ | 
					
						
							|  |  |  | #define SND_AUDIOMODE_FLAC_LEVEL0            ((__u32) 0x00000001)
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							|  |  |  | #define SND_AUDIOMODE_FLAC_LEVEL1            ((__u32) 0x00000002)
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							|  |  |  | #define SND_AUDIOMODE_FLAC_LEVEL2            ((__u32) 0x00000004)
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							|  |  |  | #define SND_AUDIOMODE_FLAC_LEVEL3            ((__u32) 0x00000008)
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							|  |  |  | #define SND_AUDIOMODE_FLAC_LEVEL4            ((__u32) 0x00000010)
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							|  |  |  | #define SND_AUDIOMODE_FLAC_LEVEL5            ((__u32) 0x00000020)
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							|  |  |  | #define SND_AUDIOMODE_FLAC_LEVEL6            ((__u32) 0x00000040)
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							|  |  |  | #define SND_AUDIOMODE_FLAC_LEVEL7            ((__u32) 0x00000080)
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							|  |  |  | #define SND_AUDIOMODE_FLAC_LEVEL8            ((__u32) 0x00000100)
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							|  |  |  | 
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							|  |  |  | #define SND_AUDIOSTREAMFORMAT_FLAC           ((__u32) 0x00000001)
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							|  |  |  | #define SND_AUDIOSTREAMFORMAT_FLAC_OGG       ((__u32) 0x00000002)
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							|  |  |  | 
 | 
					
						
							|  |  |  | /* IEC61937 payloads without CUVP and preambles */ | 
					
						
							|  |  |  | #define SND_AUDIOPROFILE_IEC61937            ((__u32) 0x00000001)
 | 
					
						
							|  |  |  | /* IEC61937 with S/PDIF preambles+CUVP bits in 32-bit containers */ | 
					
						
							|  |  |  | #define SND_AUDIOPROFILE_IEC61937_SPDIF      ((__u32) 0x00000002)
 | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | /*
 | 
					
						
							|  |  |  |  * IEC modes are mandatory for decoders. Format autodetection | 
					
						
							|  |  |  |  * will only happen on the DSP side with mode 0. The PCM mode should | 
					
						
							|  |  |  |  * not be used, the PCM codec should be used instead. | 
					
						
							|  |  |  |  */ | 
					
						
							|  |  |  | #define SND_AUDIOMODE_IEC_REF_STREAM_HEADER  ((__u32) 0x00000000)
 | 
					
						
							|  |  |  | #define SND_AUDIOMODE_IEC_LPCM		     ((__u32) 0x00000001)
 | 
					
						
							|  |  |  | #define SND_AUDIOMODE_IEC_AC3		     ((__u32) 0x00000002)
 | 
					
						
							|  |  |  | #define SND_AUDIOMODE_IEC_MPEG1		     ((__u32) 0x00000004)
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							|  |  |  | #define SND_AUDIOMODE_IEC_MP3		     ((__u32) 0x00000008)
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							|  |  |  | #define SND_AUDIOMODE_IEC_MPEG2		     ((__u32) 0x00000010)
 | 
					
						
							|  |  |  | #define SND_AUDIOMODE_IEC_AACLC		     ((__u32) 0x00000020)
 | 
					
						
							|  |  |  | #define SND_AUDIOMODE_IEC_DTS		     ((__u32) 0x00000040)
 | 
					
						
							|  |  |  | #define SND_AUDIOMODE_IEC_ATRAC		     ((__u32) 0x00000080)
 | 
					
						
							|  |  |  | #define SND_AUDIOMODE_IEC_SACD		     ((__u32) 0x00000100)
 | 
					
						
							|  |  |  | #define SND_AUDIOMODE_IEC_EAC3		     ((__u32) 0x00000200)
 | 
					
						
							|  |  |  | #define SND_AUDIOMODE_IEC_DTS_HD	     ((__u32) 0x00000400)
 | 
					
						
							|  |  |  | #define SND_AUDIOMODE_IEC_MLP		     ((__u32) 0x00000800)
 | 
					
						
							|  |  |  | #define SND_AUDIOMODE_IEC_DST		     ((__u32) 0x00001000)
 | 
					
						
							|  |  |  | #define SND_AUDIOMODE_IEC_WMAPRO	     ((__u32) 0x00002000)
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							|  |  |  | #define SND_AUDIOMODE_IEC_REF_CXT            ((__u32) 0x00004000)
 | 
					
						
							|  |  |  | #define SND_AUDIOMODE_IEC_HE_AAC	     ((__u32) 0x00008000)
 | 
					
						
							|  |  |  | #define SND_AUDIOMODE_IEC_HE_AAC2	     ((__u32) 0x00010000)
 | 
					
						
							|  |  |  | #define SND_AUDIOMODE_IEC_MPEG_SURROUND	     ((__u32) 0x00020000)
 | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | #define SND_AUDIOPROFILE_G723_1              ((__u32) 0x00000001)
 | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | #define SND_AUDIOMODE_G723_1_ANNEX_A         ((__u32) 0x00000001)
 | 
					
						
							|  |  |  | #define SND_AUDIOMODE_G723_1_ANNEX_B         ((__u32) 0x00000002)
 | 
					
						
							|  |  |  | #define SND_AUDIOMODE_G723_1_ANNEX_C         ((__u32) 0x00000004)
 | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | #define SND_AUDIOPROFILE_G729                ((__u32) 0x00000001)
 | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | #define SND_AUDIOMODE_G729_ANNEX_A           ((__u32) 0x00000001)
 | 
					
						
							|  |  |  | #define SND_AUDIOMODE_G729_ANNEX_B           ((__u32) 0x00000002)
 | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | /* <FIXME: multichannel encoders aren't supported for now. Would need
 | 
					
						
							|  |  |  |    an additional definition of channel arrangement> */ | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | /* VBR/CBR definitions */ | 
					
						
							|  |  |  | #define SND_RATECONTROLMODE_CONSTANTBITRATE  ((__u32) 0x00000001)
 | 
					
						
							|  |  |  | #define SND_RATECONTROLMODE_VARIABLEBITRATE  ((__u32) 0x00000002)
 | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | /* Encoder options */ | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | struct snd_enc_wma { | 
					
						
							|  |  |  | 	__u32 super_block_align; /* WMA Type-specific data */ | 
					
						
							|  |  |  | }; | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | /**
 | 
					
						
							|  |  |  |  * struct snd_enc_vorbis | 
					
						
							|  |  |  |  * @quality: Sets encoding quality to n, between -1 (low) and 10 (high). | 
					
						
							|  |  |  |  * In the default mode of operation, the quality level is 3. | 
					
						
							|  |  |  |  * Normal quality range is 0 - 10. | 
					
						
							|  |  |  |  * @managed: Boolean. Set  bitrate  management  mode. This turns off the | 
					
						
							|  |  |  |  * normal VBR encoding, but allows hard or soft bitrate constraints to be | 
					
						
							|  |  |  |  * enforced by the encoder. This mode can be slower, and may also be | 
					
						
							|  |  |  |  * lower quality. It is primarily useful for streaming. | 
					
						
							|  |  |  |  * @max_bit_rate: Enabled only if managed is TRUE | 
					
						
							|  |  |  |  * @min_bit_rate: Enabled only if managed is TRUE | 
					
						
							|  |  |  |  * @downmix: Boolean. Downmix input from stereo to mono (has no effect on | 
					
						
							|  |  |  |  * non-stereo streams). Useful for lower-bitrate encoding. | 
					
						
							|  |  |  |  * | 
					
						
							|  |  |  |  * These options were extracted from the OpenMAX IL spec and Gstreamer vorbisenc | 
					
						
							|  |  |  |  * properties | 
					
						
							|  |  |  |  * | 
					
						
							|  |  |  |  * For best quality users should specify VBR mode and set quality levels. | 
					
						
							|  |  |  |  */ | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | struct snd_enc_vorbis { | 
					
						
							|  |  |  | 	__s32 quality; | 
					
						
							|  |  |  | 	__u32 managed; | 
					
						
							|  |  |  | 	__u32 max_bit_rate; | 
					
						
							|  |  |  | 	__u32 min_bit_rate; | 
					
						
							|  |  |  | 	__u32 downmix; | 
					
						
							| 
									
										
										
										
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										 |  |  | } __attribute__((packed, aligned(4))); | 
					
						
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										 |  |  | 
 | 
					
						
							|  |  |  | 
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							|  |  |  | /**
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							|  |  |  |  * struct snd_enc_real | 
					
						
							|  |  |  |  * @quant_bits: number of coupling quantization bits in the stream | 
					
						
							|  |  |  |  * @start_region: coupling start region in the stream | 
					
						
							|  |  |  |  * @num_regions: number of regions value | 
					
						
							|  |  |  |  * | 
					
						
							|  |  |  |  * These options were extracted from the OpenMAX IL spec | 
					
						
							|  |  |  |  */ | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | struct snd_enc_real { | 
					
						
							|  |  |  | 	__u32 quant_bits; | 
					
						
							|  |  |  | 	__u32 start_region; | 
					
						
							|  |  |  | 	__u32 num_regions; | 
					
						
							| 
									
										
										
										
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										 |  |  | } __attribute__((packed, aligned(4))); | 
					
						
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										 |  |  | 
 | 
					
						
							|  |  |  | /**
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							|  |  |  |  * struct snd_enc_flac | 
					
						
							|  |  |  |  * @num: serial number, valid only for OGG formats | 
					
						
							|  |  |  |  *	needs to be set by application | 
					
						
							|  |  |  |  * @gain: Add replay gain tags | 
					
						
							|  |  |  |  * | 
					
						
							|  |  |  |  * These options were extracted from the FLAC online documentation | 
					
						
							|  |  |  |  * at http://flac.sourceforge.net/documentation_tools_flac.html
 | 
					
						
							|  |  |  |  * | 
					
						
							|  |  |  |  * To make the API simpler, it is assumed that the user will select quality | 
					
						
							|  |  |  |  * profiles. Additional options that affect encoding quality and speed can | 
					
						
							|  |  |  |  * be added at a later stage if needed. | 
					
						
							|  |  |  |  * | 
					
						
							|  |  |  |  * By default the Subset format is used by encoders. | 
					
						
							|  |  |  |  * | 
					
						
							|  |  |  |  * TAGS such as pictures, etc, cannot be handled by an offloaded encoder and are | 
					
						
							|  |  |  |  * not supported in this API. | 
					
						
							|  |  |  |  */ | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | struct snd_enc_flac { | 
					
						
							|  |  |  | 	__u32 num; | 
					
						
							|  |  |  | 	__u32 gain; | 
					
						
							| 
									
										
										
										
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										 |  |  | } __attribute__((packed, aligned(4))); | 
					
						
							| 
									
										
										
										
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										 |  |  | 
 | 
					
						
							|  |  |  | struct snd_enc_generic { | 
					
						
							|  |  |  | 	__u32 bw;	/* encoder bandwidth */ | 
					
						
							|  |  |  | 	__s32 reserved[15]; | 
					
						
							| 
									
										
										
										
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										 |  |  | } __attribute__((packed, aligned(4))); | 
					
						
							| 
									
										
										
										
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										 |  |  | 
 | 
					
						
							|  |  |  | union snd_codec_options { | 
					
						
							|  |  |  | 	struct snd_enc_wma wma; | 
					
						
							|  |  |  | 	struct snd_enc_vorbis vorbis; | 
					
						
							|  |  |  | 	struct snd_enc_real real; | 
					
						
							|  |  |  | 	struct snd_enc_flac flac; | 
					
						
							|  |  |  | 	struct snd_enc_generic generic; | 
					
						
							| 
									
										
										
										
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										 |  |  | } __attribute__((packed, aligned(4))); | 
					
						
							| 
									
										
										
										
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										 |  |  | 
 | 
					
						
							|  |  |  | /** struct snd_codec_desc - description of codec capabilities
 | 
					
						
							|  |  |  |  * @max_ch: Maximum number of audio channels | 
					
						
							| 
									
										
										
										
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										 |  |  |  * @sample_rates: Sampling rates in Hz, use values like 48000 for this | 
					
						
							| 
									
										
										
										
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										 |  |  |  * @num_sample_rates: Number of valid values in sample_rates array | 
					
						
							| 
									
										
										
										
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										 |  |  |  * @bit_rate: Indexed array containing supported bit rates | 
					
						
							|  |  |  |  * @num_bitrates: Number of valid values in bit_rate array | 
					
						
							|  |  |  |  * @rate_control: value is specified by SND_RATECONTROLMODE defines. | 
					
						
							|  |  |  |  * @profiles: Supported profiles. See SND_AUDIOPROFILE defines. | 
					
						
							|  |  |  |  * @modes: Supported modes. See SND_AUDIOMODE defines | 
					
						
							|  |  |  |  * @formats: Supported formats. See SND_AUDIOSTREAMFORMAT defines | 
					
						
							|  |  |  |  * @min_buffer: Minimum buffer size handled by codec implementation | 
					
						
							|  |  |  |  * @reserved: reserved for future use | 
					
						
							|  |  |  |  * | 
					
						
							|  |  |  |  * This structure provides a scalar value for profiles, modes and stream | 
					
						
							|  |  |  |  * format fields. | 
					
						
							|  |  |  |  * If an implementation supports multiple combinations, they will be listed as | 
					
						
							|  |  |  |  * codecs with different descriptors, for example there would be 2 descriptors | 
					
						
							|  |  |  |  * for AAC-RAW and AAC-ADTS. | 
					
						
							|  |  |  |  * This entails some redundancy but makes it easier to avoid invalid | 
					
						
							|  |  |  |  * configurations. | 
					
						
							|  |  |  |  * | 
					
						
							|  |  |  |  */ | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | struct snd_codec_desc { | 
					
						
							|  |  |  | 	__u32 max_ch; | 
					
						
							| 
									
										
										
										
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										 |  |  | 	__u32 sample_rates[MAX_NUM_SAMPLE_RATES]; | 
					
						
							| 
									
										
										
										
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										 |  |  | 	__u32 num_sample_rates; | 
					
						
							| 
									
										
										
										
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										 |  |  | 	__u32 bit_rate[MAX_NUM_BITRATES]; | 
					
						
							|  |  |  | 	__u32 num_bitrates; | 
					
						
							|  |  |  | 	__u32 rate_control; | 
					
						
							|  |  |  | 	__u32 profiles; | 
					
						
							|  |  |  | 	__u32 modes; | 
					
						
							|  |  |  | 	__u32 formats; | 
					
						
							|  |  |  | 	__u32 min_buffer; | 
					
						
							|  |  |  | 	__u32 reserved[15]; | 
					
						
							| 
									
										
										
										
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										 |  |  | } __attribute__((packed, aligned(4))); | 
					
						
							| 
									
										
										
										
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										 |  |  | 
 | 
					
						
							|  |  |  | /** struct snd_codec
 | 
					
						
							|  |  |  |  * @id: Identifies the supported audio encoder/decoder. | 
					
						
							|  |  |  |  *		See SND_AUDIOCODEC macros. | 
					
						
							|  |  |  |  * @ch_in: Number of input audio channels | 
					
						
							|  |  |  |  * @ch_out: Number of output channels. In case of contradiction between | 
					
						
							|  |  |  |  *		this field and the channelMode field, the channelMode field | 
					
						
							|  |  |  |  *		overrides. | 
					
						
							| 
									
										
										
										
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										 |  |  |  * @sample_rate: Audio sample rate of input data in Hz, use values like 48000 | 
					
						
							|  |  |  |  *		for this. | 
					
						
							| 
									
										
										
										
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										 |  |  |  * @bit_rate: Bitrate of encoded data. May be ignored by decoders | 
					
						
							|  |  |  |  * @rate_control: Encoding rate control. See SND_RATECONTROLMODE defines. | 
					
						
							|  |  |  |  *               Encoders may rely on profiles for quality levels. | 
					
						
							|  |  |  |  *		 May be ignored by decoders. | 
					
						
							|  |  |  |  * @profile: Mandatory for encoders, can be mandatory for specific | 
					
						
							|  |  |  |  *		decoders as well. See SND_AUDIOPROFILE defines. | 
					
						
							|  |  |  |  * @level: Supported level (Only used by WMA at the moment) | 
					
						
							|  |  |  |  * @ch_mode: Channel mode for encoder. See SND_AUDIOCHANMODE defines | 
					
						
							|  |  |  |  * @format: Format of encoded bistream. Mandatory when defined. | 
					
						
							|  |  |  |  *		See SND_AUDIOSTREAMFORMAT defines. | 
					
						
							|  |  |  |  * @align: Block alignment in bytes of an audio sample. | 
					
						
							|  |  |  |  *		Only required for PCM or IEC formats. | 
					
						
							|  |  |  |  * @options: encoder-specific settings | 
					
						
							|  |  |  |  * @reserved: reserved for future use | 
					
						
							|  |  |  |  */ | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | struct snd_codec { | 
					
						
							|  |  |  | 	__u32 id; | 
					
						
							|  |  |  | 	__u32 ch_in; | 
					
						
							|  |  |  | 	__u32 ch_out; | 
					
						
							|  |  |  | 	__u32 sample_rate; | 
					
						
							|  |  |  | 	__u32 bit_rate; | 
					
						
							|  |  |  | 	__u32 rate_control; | 
					
						
							|  |  |  | 	__u32 profile; | 
					
						
							|  |  |  | 	__u32 level; | 
					
						
							|  |  |  | 	__u32 ch_mode; | 
					
						
							|  |  |  | 	__u32 format; | 
					
						
							|  |  |  | 	__u32 align; | 
					
						
							|  |  |  | 	union snd_codec_options options; | 
					
						
							|  |  |  | 	__u32 reserved[3]; | 
					
						
							| 
									
										
										
										
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										 |  |  | } __attribute__((packed, aligned(4))); | 
					
						
							| 
									
										
										
										
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										 |  |  | 
 | 
					
						
							|  |  |  | #endif
 |