406 lines
16 KiB
C
406 lines
16 KiB
C
|
/*
|
||
|
|
* 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
|
||
|
|
#define __SND_COMPRESS_PARAMS_H
|
||
|
|
|
||
|
|
#include <linux/types.h>
|
||
|
|
|
||
|
|
/* AUDIO CODECS SUPPORTED */
|
||
|
|
#define MAX_NUM_CODECS 32
|
||
|
|
#define MAX_NUM_CODEC_DESCRIPTORS 32
|
||
|
|
#define MAX_NUM_BITRATES 32
|
||
|
|
#define MAX_NUM_SAMPLE_RATES 32
|
||
|
|
|
||
|
|
/* Codecs are listed linearly to allow for extensibility */
|
||
|
|
#define SND_AUDIOCODEC_PCM ((__u32) 0x00000001)
|
||
|
|
#define SND_AUDIOCODEC_MP3 ((__u32) 0x00000002)
|
||
|
|
#define SND_AUDIOCODEC_AMR ((__u32) 0x00000003)
|
||
|
|
#define SND_AUDIOCODEC_AMRWB ((__u32) 0x00000004)
|
||
|
|
#define SND_AUDIOCODEC_AMRWBPLUS ((__u32) 0x00000005)
|
||
|
|
#define SND_AUDIOCODEC_AAC ((__u32) 0x00000006)
|
||
|
|
#define SND_AUDIOCODEC_WMA ((__u32) 0x00000007)
|
||
|
|
#define SND_AUDIOCODEC_REAL ((__u32) 0x00000008)
|
||
|
|
#define SND_AUDIOCODEC_VORBIS ((__u32) 0x00000009)
|
||
|
|
#define SND_AUDIOCODEC_FLAC ((__u32) 0x0000000A)
|
||
|
|
#define SND_AUDIOCODEC_IEC61937 ((__u32) 0x0000000B)
|
||
|
|
#define SND_AUDIOCODEC_G723_1 ((__u32) 0x0000000C)
|
||
|
|
#define SND_AUDIOCODEC_G729 ((__u32) 0x0000000D)
|
||
|
|
#define SND_AUDIOCODEC_BESPOKE ((__u32) 0x0000000E)
|
||
|
|
#define SND_AUDIOCODEC_MAX SND_AUDIOCODEC_BESPOKE
|
||
|
|
|
||
|
|
/*
|
||
|
|
* 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)
|
||
|
|
#define SND_AUDIOCHANMODE_MP3_JOINTSTEREO ((__u32) 0x00000004)
|
||
|
|
#define SND_AUDIOCHANMODE_MP3_DUAL ((__u32) 0x00000008)
|
||
|
|
|
||
|
|
#define SND_AUDIOPROFILE_AMR ((__u32) 0x00000001)
|
||
|
|
|
||
|
|
/* 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)
|
||
|
|
|
||
|
|
#define SND_AUDIOSTREAMFORMAT_UNDEFINED ((__u32) 0x00000000)
|
||
|
|
#define SND_AUDIOSTREAMFORMAT_CONFORMANCE ((__u32) 0x00000001)
|
||
|
|
#define SND_AUDIOSTREAMFORMAT_IF1 ((__u32) 0x00000002)
|
||
|
|
#define SND_AUDIOSTREAMFORMAT_IF2 ((__u32) 0x00000004)
|
||
|
|
#define SND_AUDIOSTREAMFORMAT_FSF ((__u32) 0x00000008)
|
||
|
|
#define SND_AUDIOSTREAMFORMAT_RTPPAYLOAD ((__u32) 0x00000010)
|
||
|
|
#define SND_AUDIOSTREAMFORMAT_ITU ((__u32) 0x00000020)
|
||
|
|
|
||
|
|
#define SND_AUDIOPROFILE_AMRWB ((__u32) 0x00000001)
|
||
|
|
|
||
|
|
/* 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)
|
||
|
|
|
||
|
|
/* AAC modes are required for encoders and decoders */
|
||
|
|
#define SND_AUDIOMODE_AAC_MAIN ((__u32) 0x00000001)
|
||
|
|
#define SND_AUDIOMODE_AAC_LC ((__u32) 0x00000002)
|
||
|
|
#define SND_AUDIOMODE_AAC_SSR ((__u32) 0x00000004)
|
||
|
|
#define SND_AUDIOMODE_AAC_LTP ((__u32) 0x00000008)
|
||
|
|
#define SND_AUDIOMODE_AAC_HE ((__u32) 0x00000010)
|
||
|
|
#define SND_AUDIOMODE_AAC_SCALABLE ((__u32) 0x00000020)
|
||
|
|
#define SND_AUDIOMODE_AAC_ERLC ((__u32) 0x00000040)
|
||
|
|
#define SND_AUDIOMODE_AAC_LD ((__u32) 0x00000080)
|
||
|
|
#define SND_AUDIOMODE_AAC_HE_PS ((__u32) 0x00000100)
|
||
|
|
#define SND_AUDIOMODE_AAC_HE_MPS ((__u32) 0x00000200)
|
||
|
|
|
||
|
|
/* AAC formats are required for encoders and decoders */
|
||
|
|
#define SND_AUDIOSTREAMFORMAT_MP2ADTS ((__u32) 0x00000001)
|
||
|
|
#define SND_AUDIOSTREAMFORMAT_MP4ADTS ((__u32) 0x00000002)
|
||
|
|
#define SND_AUDIOSTREAMFORMAT_MP4LOAS ((__u32) 0x00000004)
|
||
|
|
#define SND_AUDIOSTREAMFORMAT_MP4LATM ((__u32) 0x00000008)
|
||
|
|
#define SND_AUDIOSTREAMFORMAT_ADIF ((__u32) 0x00000010)
|
||
|
|
#define SND_AUDIOSTREAMFORMAT_MP4FF ((__u32) 0x00000020)
|
||
|
|
#define SND_AUDIOSTREAMFORMAT_RAW ((__u32) 0x00000040)
|
||
|
|
|
||
|
|
#define SND_AUDIOPROFILE_WMA7 ((__u32) 0x00000001)
|
||
|
|
#define SND_AUDIOPROFILE_WMA8 ((__u32) 0x00000002)
|
||
|
|
#define SND_AUDIOPROFILE_WMA9 ((__u32) 0x00000004)
|
||
|
|
#define SND_AUDIOPROFILE_WMA10 ((__u32) 0x00000008)
|
||
|
|
|
||
|
|
#define SND_AUDIOMODE_WMA_LEVEL1 ((__u32) 0x00000001)
|
||
|
|
#define SND_AUDIOMODE_WMA_LEVEL2 ((__u32) 0x00000002)
|
||
|
|
#define SND_AUDIOMODE_WMA_LEVEL3 ((__u32) 0x00000004)
|
||
|
|
#define SND_AUDIOMODE_WMA_LEVEL4 ((__u32) 0x00000008)
|
||
|
|
#define SND_AUDIOMODE_WMAPRO_LEVELM0 ((__u32) 0x00000010)
|
||
|
|
#define SND_AUDIOMODE_WMAPRO_LEVELM1 ((__u32) 0x00000020)
|
||
|
|
#define SND_AUDIOMODE_WMAPRO_LEVELM2 ((__u32) 0x00000040)
|
||
|
|
#define SND_AUDIOMODE_WMAPRO_LEVELM3 ((__u32) 0x00000080)
|
||
|
|
|
||
|
|
#define SND_AUDIOSTREAMFORMAT_WMA_ASF ((__u32) 0x00000001)
|
||
|
|
/*
|
||
|
|
* Some implementations strip the ASF header and only send ASF packets
|
||
|
|
* to the DSP
|
||
|
|
*/
|
||
|
|
#define SND_AUDIOSTREAMFORMAT_WMA_NOASF_HDR ((__u32) 0x00000002)
|
||
|
|
|
||
|
|
#define SND_AUDIOPROFILE_REALAUDIO ((__u32) 0x00000001)
|
||
|
|
|
||
|
|
#define SND_AUDIOMODE_REALAUDIO_G2 ((__u32) 0x00000001)
|
||
|
|
#define SND_AUDIOMODE_REALAUDIO_8 ((__u32) 0x00000002)
|
||
|
|
#define SND_AUDIOMODE_REALAUDIO_10 ((__u32) 0x00000004)
|
||
|
|
#define SND_AUDIOMODE_REALAUDIO_SURROUND ((__u32) 0x00000008)
|
||
|
|
|
||
|
|
#define SND_AUDIOPROFILE_VORBIS ((__u32) 0x00000001)
|
||
|
|
|
||
|
|
#define SND_AUDIOMODE_VORBIS ((__u32) 0x00000001)
|
||
|
|
|
||
|
|
#define SND_AUDIOPROFILE_FLAC ((__u32) 0x00000001)
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Define quality levels for FLAC encoders, from LEVEL0 (fast)
|
||
|
|
* to LEVEL8 (best)
|
||
|
|
*/
|
||
|
|
#define SND_AUDIOMODE_FLAC_LEVEL0 ((__u32) 0x00000001)
|
||
|
|
#define SND_AUDIOMODE_FLAC_LEVEL1 ((__u32) 0x00000002)
|
||
|
|
#define SND_AUDIOMODE_FLAC_LEVEL2 ((__u32) 0x00000004)
|
||
|
|
#define SND_AUDIOMODE_FLAC_LEVEL3 ((__u32) 0x00000008)
|
||
|
|
#define SND_AUDIOMODE_FLAC_LEVEL4 ((__u32) 0x00000010)
|
||
|
|
#define SND_AUDIOMODE_FLAC_LEVEL5 ((__u32) 0x00000020)
|
||
|
|
#define SND_AUDIOMODE_FLAC_LEVEL6 ((__u32) 0x00000040)
|
||
|
|
#define SND_AUDIOMODE_FLAC_LEVEL7 ((__u32) 0x00000080)
|
||
|
|
#define SND_AUDIOMODE_FLAC_LEVEL8 ((__u32) 0x00000100)
|
||
|
|
|
||
|
|
#define SND_AUDIOSTREAMFORMAT_FLAC ((__u32) 0x00000001)
|
||
|
|
#define SND_AUDIOSTREAMFORMAT_FLAC_OGG ((__u32) 0x00000002)
|
||
|
|
|
||
|
|
/* 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)
|
||
|
|
#define SND_AUDIOMODE_IEC_MP3 ((__u32) 0x00000008)
|
||
|
|
#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)
|
||
|
|
#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;
|
||
|
|
} __attribute__((packed, aligned(4)));
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 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;
|
||
|
|
} __attribute__((packed, aligned(4)));
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 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;
|
||
|
|
} __attribute__((packed, aligned(4)));
|
||
|
|
|
||
|
|
struct snd_enc_generic {
|
||
|
|
__u32 bw; /* encoder bandwidth */
|
||
|
|
__s32 reserved[15]; /* Can be used for SND_AUDIOCODEC_BESPOKE */
|
||
|
|
} __attribute__((packed, aligned(4)));
|
||
|
|
|
||
|
|
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;
|
||
|
|
} __attribute__((packed, aligned(4)));
|
||
|
|
|
||
|
|
/** struct snd_codec_desc - description of codec capabilities
|
||
|
|
* @max_ch: Maximum number of audio channels
|
||
|
|
* @sample_rates: Sampling rates in Hz, use values like 48000 for this
|
||
|
|
* @num_sample_rates: Number of valid values in sample_rates array
|
||
|
|
* @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;
|
||
|
|
__u32 sample_rates[MAX_NUM_SAMPLE_RATES];
|
||
|
|
__u32 num_sample_rates;
|
||
|
|
__u32 bit_rate[MAX_NUM_BITRATES];
|
||
|
|
__u32 num_bitrates;
|
||
|
|
__u32 rate_control;
|
||
|
|
__u32 profiles;
|
||
|
|
__u32 modes;
|
||
|
|
__u32 formats;
|
||
|
|
__u32 min_buffer;
|
||
|
|
__u32 reserved[15];
|
||
|
|
} __attribute__((packed, aligned(4)));
|
||
|
|
|
||
|
|
/** 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.
|
||
|
|
* @sample_rate: Audio sample rate of input data in Hz, use values like 48000
|
||
|
|
* for this.
|
||
|
|
* @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];
|
||
|
|
} __attribute__((packed, aligned(4)));
|
||
|
|
|
||
|
|
#endif
|