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452 lines
18 KiB
C
452 lines
18 KiB
C
/* Copyright (c) 2010-2012 IETF Trust, Xiph.Org Foundation, Skype Limited. All rights reserved.
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Written by Jean-Marc Valin and Koen Vos */
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/*
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This file is extracted from RFC6716. Please see that RFC for additional
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information.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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- Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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- Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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- Neither the name of Internet Society, IETF or IETF Trust, nor the
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names of specific contributors, may be used to endorse or promote
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products derived from this software without specific prior written
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permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
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OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* @file opus_defines.h
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* @brief Opus reference implementation constants
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*/
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#ifndef OPUS_DEFINES_H
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#define OPUS_DEFINES_H
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#include "opus_types.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/** @defgroup errorcodes Error codes
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* @{
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*/
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/** No error @hideinitializer*/
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#define OPUS_OK 0
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/** One or more invalid/out of range arguments @hideinitializer*/
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#define OPUS_BAD_ARG -1
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/** The mode struct passed is invalid @hideinitializer*/
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#define OPUS_BUFFER_TOO_SMALL -2
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/** An internal error was detected @hideinitializer*/
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#define OPUS_INTERNAL_ERROR -3
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/** The compressed data passed is corrupted @hideinitializer*/
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#define OPUS_INVALID_PACKET -4
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/** Invalid/unsupported request number @hideinitializer*/
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#define OPUS_UNIMPLEMENTED -5
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/** An encoder or decoder structure is invalid or already freed @hideinitializer*/
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#define OPUS_INVALID_STATE -6
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/** Memory allocation has failed @hideinitializer*/
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#define OPUS_ALLOC_FAIL -7
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/**@}*/
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/** @cond OPUS_INTERNAL_DOC */
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/**Export control for opus functions */
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#if defined(WIN32)
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# ifdef OPUS_BUILD
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# define OPUS_EXPORT __declspec(dllexport)
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# else
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# define OPUS_EXPORT __declspec(dllimport)
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# endif
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#elif defined(__GNUC__) && defined(OPUS_BUILD)
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# define OPUS_EXPORT __attribute__ ((visibility ("default")))
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#else
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# define OPUS_EXPORT
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#endif
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/** These are the actual Encoder CTL ID numbers.
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* They should not be used directly by applications. */
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#define OPUS_SET_APPLICATION_REQUEST 4000
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#define OPUS_GET_APPLICATION_REQUEST 4001
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#define OPUS_SET_BITRATE_REQUEST 4002
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#define OPUS_GET_BITRATE_REQUEST 4003
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#define OPUS_SET_MAX_BANDWIDTH_REQUEST 4004
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#define OPUS_GET_MAX_BANDWIDTH_REQUEST 4005
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#define OPUS_SET_VBR_REQUEST 4006
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#define OPUS_GET_VBR_REQUEST 4007
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#define OPUS_SET_BANDWIDTH_REQUEST 4008
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#define OPUS_GET_BANDWIDTH_REQUEST 4009
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#define OPUS_SET_COMPLEXITY_REQUEST 4010
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#define OPUS_GET_COMPLEXITY_REQUEST 4011
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#define OPUS_SET_INBAND_FEC_REQUEST 4012
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#define OPUS_GET_INBAND_FEC_REQUEST 4013
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#define OPUS_SET_PACKET_LOSS_PERC_REQUEST 4014
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#define OPUS_GET_PACKET_LOSS_PERC_REQUEST 4015
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#define OPUS_SET_DTX_REQUEST 4016
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#define OPUS_GET_DTX_REQUEST 4017
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#define OPUS_SET_VBR_CONSTRAINT_REQUEST 4020
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#define OPUS_GET_VBR_CONSTRAINT_REQUEST 4021
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#define OPUS_SET_FORCE_CHANNELS_REQUEST 4022
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#define OPUS_GET_FORCE_CHANNELS_REQUEST 4023
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#define OPUS_SET_SIGNAL_REQUEST 4024
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#define OPUS_GET_SIGNAL_REQUEST 4025
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#define OPUS_GET_LOOKAHEAD_REQUEST 4027
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/* #define OPUS_RESET_STATE 4028 */
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#define OPUS_GET_FINAL_RANGE_REQUEST 4031
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#define OPUS_GET_PITCH_REQUEST 4033
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/* Macros to trigger compilation errors when the wrong types are provided to a CTL */
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#define __opus_check_int(x) (((void)((x) == (opus_int32)0)), (opus_int32)(x))
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#define __opus_check_int_ptr(ptr) ((ptr) + ((ptr) - (opus_int32*)(ptr)))
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#define __opus_check_uint_ptr(ptr) ((ptr) + ((ptr) - (opus_uint32*)(ptr)))
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/** @endcond */
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/** @defgroup ctlvalues Pre-defined values for CTL interface
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* @see genericctls, encoderctls
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* @{
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*/
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/* Values for the various encoder CTLs */
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#define OPUS_AUTO -1000 /**<Auto/default setting @hideinitializer*/
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#define OPUS_BITRATE_MAX -1 /**<Maximum bitrate @hideinitializer*/
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/** Best for most VoIP/videoconference applications where listening quality and intelligibility matter most
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* @hideinitializer */
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#define OPUS_APPLICATION_VOIP 2048
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/** Best for broadcast/high-fidelity application where the decoded audio should be as close as possible to the input
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* @hideinitializer */
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#define OPUS_APPLICATION_AUDIO 2049
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/** Only use when lowest-achievable latency is what matters most. Voice-optimized modes cannot be used.
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* @hideinitializer */
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#define OPUS_APPLICATION_RESTRICTED_LOWDELAY 2051
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#define OPUS_SIGNAL_VOICE 3001 /**< Signal being encoded is voice */
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#define OPUS_SIGNAL_MUSIC 3002 /**< Signal being encoded is music */
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#define OPUS_BANDWIDTH_NARROWBAND 1101 /**< 4kHz bandpass @hideinitializer*/
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#define OPUS_BANDWIDTH_MEDIUMBAND 1102 /**< 6kHz bandpass @hideinitializer*/
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#define OPUS_BANDWIDTH_WIDEBAND 1103 /**< 8kHz bandpass @hideinitializer*/
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#define OPUS_BANDWIDTH_SUPERWIDEBAND 1104 /**<12kHz bandpass @hideinitializer*/
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#define OPUS_BANDWIDTH_FULLBAND 1105 /**<20kHz bandpass @hideinitializer*/
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/**@}*/
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/** @defgroup encoderctls Encoder related CTLs
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*
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* These are convenience macros for use with the \c opus_encode_ctl
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* interface. They are used to generate the appropriate series of
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* arguments for that call, passing the correct type, size and so
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* on as expected for each particular request.
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*
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* Some usage examples:
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*
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* @code
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* int ret;
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* ret = opus_encoder_ctl(enc_ctx, OPUS_SET_BANDWIDTH(OPUS_AUTO));
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* if (ret != OPUS_OK) return ret;
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*
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* int rate;
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* opus_encoder_ctl(enc_ctx, OPUS_GET_BANDWIDTH(&rate));
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*
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* opus_encoder_ctl(enc_ctx, OPUS_RESET_STATE);
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* @endcode
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*
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* @see genericctls, opusencoder
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* @{
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*/
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/** Configures the encoder's computational complexity.
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* The supported range is 0-10 inclusive with 10 representing the highest complexity.
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* The default value is 10.
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* @param[in] x <tt>int</tt>: 0-10, inclusive
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* @hideinitializer */
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#define OPUS_SET_COMPLEXITY(x) OPUS_SET_COMPLEXITY_REQUEST, __opus_check_int(x)
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/** Gets the encoder's complexity configuration, @see OPUS_SET_COMPLEXITY
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* @param[out] x <tt>int*</tt>: 0-10, inclusive
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* @hideinitializer */
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#define OPUS_GET_COMPLEXITY(x) OPUS_GET_COMPLEXITY_REQUEST, __opus_check_int_ptr(x)
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/** Configures the bitrate in the encoder.
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* Rates from 500 to 512000 bits per second are meaningful as well as the
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* special values OPUS_BITRATE_AUTO and OPUS_BITRATE_MAX.
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* The value OPUS_BITRATE_MAX can be used to cause the codec to use as much rate
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* as it can, which is useful for controlling the rate by adjusting the output
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* buffer size.
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* @param[in] x <tt>opus_int32</tt>: bitrate in bits per second.
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* @hideinitializer */
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#define OPUS_SET_BITRATE(x) OPUS_SET_BITRATE_REQUEST, __opus_check_int(x)
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/** Gets the encoder's bitrate configuration, @see OPUS_SET_BITRATE
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* @param[out] x <tt>opus_int32*</tt>: bitrate in bits per second.
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* @hideinitializer */
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#define OPUS_GET_BITRATE(x) OPUS_GET_BITRATE_REQUEST, __opus_check_int_ptr(x)
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/** Configures VBR in the encoder.
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* The following values are currently supported:
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* - 0 CBR
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* - 1 VBR (default)
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* The configured bitrate may not be met exactly because frames must
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* be an integer number of bytes in length.
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* @warning Only the MDCT mode of Opus can provide hard CBR behavior.
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* @param[in] x <tt>int</tt>: 0; 1 (default)
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* @hideinitializer */
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#define OPUS_SET_VBR(x) OPUS_SET_VBR_REQUEST, __opus_check_int(x)
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/** Gets the encoder's VBR configuration, @see OPUS_SET_VBR
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* @param[out] x <tt>int*</tt>: 0; 1
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* @hideinitializer */
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#define OPUS_GET_VBR(x) OPUS_GET_VBR_REQUEST, __opus_check_int_ptr(x)
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/** Configures constrained VBR in the encoder.
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* The following values are currently supported:
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* - 0 Unconstrained VBR (default)
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* - 1 Maximum one frame buffering delay assuming transport with a serialization speed of the nominal bitrate
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* This setting is irrelevant when the encoder is in CBR mode.
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* @warning Only the MDCT mode of Opus currently heeds the constraint.
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* Speech mode ignores it completely, hybrid mode may fail to obey it
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* if the LPC layer uses more bitrate than the constraint would have
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* permitted.
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* @param[in] x <tt>int</tt>: 0 (default); 1
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* @hideinitializer */
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#define OPUS_SET_VBR_CONSTRAINT(x) OPUS_SET_VBR_CONSTRAINT_REQUEST, __opus_check_int(x)
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/** Gets the encoder's constrained VBR configuration @see OPUS_SET_VBR_CONSTRAINT
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* @param[out] x <tt>int*</tt>: 0; 1
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* @hideinitializer */
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#define OPUS_GET_VBR_CONSTRAINT(x) OPUS_GET_VBR_CONSTRAINT_REQUEST, __opus_check_int_ptr(x)
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/** Configures mono/stereo forcing in the encoder.
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* This is useful when the caller knows that the input signal is currently a mono
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* source embedded in a stereo stream.
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* @param[in] x <tt>int</tt>: OPUS_AUTO (default); 1 (forced mono); 2 (forced stereo)
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* @hideinitializer */
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#define OPUS_SET_FORCE_CHANNELS(x) OPUS_SET_FORCE_CHANNELS_REQUEST, __opus_check_int(x)
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/** Gets the encoder's forced channel configuration, @see OPUS_SET_FORCE_CHANNELS
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* @param[out] x <tt>int*</tt>: OPUS_AUTO; 0; 1
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* @hideinitializer */
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#define OPUS_GET_FORCE_CHANNELS(x) OPUS_GET_FORCE_CHANNELS_REQUEST, __opus_check_int_ptr(x)
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/** Configures the encoder's maximum bandpass allowed, @see OPUS_GET_MAX_BANDWIDTH
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* The supported values are:
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* - OPUS_BANDWIDTH_NARROWBAND 4kHz passband
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* - OPUS_BANDWIDTH_MEDIUMBAND 6kHz passband
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* - OPUS_BANDWIDTH_WIDEBAND 8kHz passband
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* - OPUS_BANDWIDTH_SUPERWIDEBAND 12kHz passband
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* - OPUS_BANDWIDTH_FULLBAND 20kHz passband (default)
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* @param[in] x <tt>int</tt>: Bandwidth value
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* @hideinitializer */
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#define OPUS_SET_MAX_BANDWIDTH(x) OPUS_SET_MAX_BANDWIDTH_REQUEST, __opus_check_int(x)
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/** Gets the encoder's configured maximum bandpass allowed, @see OPUS_SET_MAX_BANDWIDTH
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* @param[out] x <tt>int*</tt>: Bandwidth value
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* @hideinitializer */
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#define OPUS_GET_MAX_BANDWIDTH(x) OPUS_GET_MAX_BANDWIDTH_REQUEST, __opus_check_int_ptr(x)
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/** Configures the encoder's bandpass, @see OPUS_GET_BANDWIDTH
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* The supported values are:
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* - OPUS_AUTO (default)
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* - OPUS_BANDWIDTH_NARROWBAND 4kHz passband
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* - OPUS_BANDWIDTH_MEDIUMBAND 6kHz passband
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* - OPUS_BANDWIDTH_WIDEBAND 8kHz passband
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* - OPUS_BANDWIDTH_SUPERWIDEBAND 12kHz passband
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* - OPUS_BANDWIDTH_FULLBAND 20kHz passband
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* @param[in] x <tt>int</tt>: Bandwidth value
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* @hideinitializer */
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#define OPUS_SET_BANDWIDTH(x) OPUS_SET_BANDWIDTH_REQUEST, __opus_check_int(x)
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/** Configures the type of signal being encoded.
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* This is a hint which helps the encoder's mode selection.
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* The supported values are:
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* - OPUS_SIGNAL_AUTO (default)
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* - OPUS_SIGNAL_VOICE
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* - OPUS_SIGNAL_MUSIC
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* @param[in] x <tt>int</tt>: Signal type
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* @hideinitializer */
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#define OPUS_SET_SIGNAL(x) OPUS_SET_SIGNAL_REQUEST, __opus_check_int(x)
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/** Gets the encoder's configured signal type, @see OPUS_SET_SIGNAL
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*
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* @param[out] x <tt>int*</tt>: Signal type
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* @hideinitializer */
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#define OPUS_GET_SIGNAL(x) OPUS_GET_SIGNAL_REQUEST, __opus_check_int_ptr(x)
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/** Configures the encoder's intended application.
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* The initial value is a mandatory argument to the encoder_create function.
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* The supported values are:
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* - OPUS_APPLICATION_VOIP Process signal for improved speech intelligibility
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* - OPUS_APPLICATION_AUDIO Favor faithfulness to the original input
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* - OPUS_APPLICATION_RESTRICTED_LOWDELAY Configure the minimum possible coding delay
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*
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* @param[in] x <tt>int</tt>: Application value
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* @hideinitializer */
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#define OPUS_SET_APPLICATION(x) OPUS_SET_APPLICATION_REQUEST, __opus_check_int(x)
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/** Gets the encoder's configured application, @see OPUS_SET_APPLICATION
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*
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* @param[out] x <tt>int*</tt>: Application value
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* @hideinitializer */
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#define OPUS_GET_APPLICATION(x) OPUS_GET_APPLICATION_REQUEST, __opus_check_int_ptr(x)
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/** Gets the total samples of delay added by the entire codec.
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* This can be queried by the encoder and then the provided number of samples can be
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* skipped on from the start of the decoder's output to provide time aligned input
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* and output. From the perspective of a decoding application the real data begins this many
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* samples late.
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*
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* The decoder contribution to this delay is identical for all decoders, but the
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* encoder portion of the delay may vary from implementation to implementation,
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* version to version, or even depend on the encoder's initial configuration.
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* Applications needing delay compensation should call this CTL rather than
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* hard-coding a value.
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* @param[out] x <tt>int*</tt>: Number of lookahead samples
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* @hideinitializer */
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#define OPUS_GET_LOOKAHEAD(x) OPUS_GET_LOOKAHEAD_REQUEST, __opus_check_int_ptr(x)
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/** Configures the encoder's use of inband forward error correction.
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* @note This is only applicable to the LPC layer
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*
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* @param[in] x <tt>int</tt>: FEC flag, 0 (disabled) is default
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* @hideinitializer */
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#define OPUS_SET_INBAND_FEC(x) OPUS_SET_INBAND_FEC_REQUEST, __opus_check_int(x)
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/** Gets encoder's configured use of inband forward error correction, @see OPUS_SET_INBAND_FEC
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*
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* @param[out] x <tt>int*</tt>: FEC flag
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* @hideinitializer */
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#define OPUS_GET_INBAND_FEC(x) OPUS_GET_INBAND_FEC_REQUEST, __opus_check_int_ptr(x)
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/** Configures the encoder's expected packet loss percentage.
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* Higher values with trigger progressively more loss resistant behavior in the encoder
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* at the expense of quality at a given bitrate in the lossless case, but greater quality
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* under loss.
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*
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* @param[in] x <tt>int</tt>: Loss percentage in the range 0-100, inclusive.
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* @hideinitializer */
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#define OPUS_SET_PACKET_LOSS_PERC(x) OPUS_SET_PACKET_LOSS_PERC_REQUEST, __opus_check_int(x)
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/** Gets the encoder's configured packet loss percentage, @see OPUS_SET_PACKET_LOSS_PERC
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*
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* @param[out] x <tt>int*</tt>: Loss percentage in the range 0-100, inclusive.
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* @hideinitializer */
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#define OPUS_GET_PACKET_LOSS_PERC(x) OPUS_GET_PACKET_LOSS_PERC_REQUEST, __opus_check_int_ptr(x)
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/** Configures the encoder's use of discontinuous transmission.
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* @note This is only applicable to the LPC layer
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*
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* @param[in] x <tt>int</tt>: DTX flag, 0 (disabled) is default
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* @hideinitializer */
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#define OPUS_SET_DTX(x) OPUS_SET_DTX_REQUEST, __opus_check_int(x)
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/** Gets encoder's configured use of discontinuous transmission, @see OPUS_SET_DTX
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*
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* @param[out] x <tt>int*</tt>: DTX flag
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* @hideinitializer */
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#define OPUS_GET_DTX(x) OPUS_GET_DTX_REQUEST, __opus_check_int_ptr(x)
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/**@}*/
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/** @defgroup genericctls Generic CTLs
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*
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* These macros are used with the \c opus_decoder_ctl and
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* \c opus_encoder_ctl calls to generate a particular
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* request.
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*
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* When called on an \c OpusDecoder they apply to that
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* particular decoder instance. When called on an
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* \c OpusEncoder they apply to the corresponding setting
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* on that encoder instance, if present.
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*
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* Some usage examples:
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*
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* @code
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* int ret;
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* opus_int32 pitch;
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* ret = opus_decoder_ctl(dec_ctx, OPUS_GET_PITCH(&pitch));
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* if (ret == OPUS_OK) return ret;
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*
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* opus_encoder_ctl(enc_ctx, OPUS_RESET_STATE);
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* opus_decoder_ctl(dec_ctx, OPUS_RESET_STATE);
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*
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* opus_int32 enc_bw, dec_bw;
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* opus_encoder_ctl(enc_ctx, OPUS_GET_BANDWIDTH(&enc_bw));
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* opus_decoder_ctl(dec_ctx, OPUS_GET_BANDWIDTH(&dec_bw));
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* if (enc_bw != dec_bw) {
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* printf("packet bandwidth mismatch!\n");
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* }
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* @endcode
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*
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* @see opusencoder, opus_decoder_ctl, opus_encoder_ctl
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* @{
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*/
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/** Resets the codec state to be equivalent to a freshly initialized state.
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* This should be called when switching streams in order to prevent
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* the back to back decoding from giving different results from
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* one at a time decoding.
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* @hideinitializer */
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#define OPUS_RESET_STATE 4028
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/** Gets the final state of the codec's entropy coder.
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* This is used for testing purposes,
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* The encoder and decoder state should be identical after coding a payload
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* (assuming no data corruption or software bugs)
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*
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* @param[out] x <tt>opus_uint32*</tt>: Entropy coder state
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*
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* @hideinitializer */
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#define OPUS_GET_FINAL_RANGE(x) OPUS_GET_FINAL_RANGE_REQUEST, __opus_check_uint_ptr(x)
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/** Gets the pitch of the last decoded frame, if available.
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* This can be used for any post-processing algorithm requiring the use of pitch,
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* e.g. time stretching/shortening. If the last frame was not voiced, or if the
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* pitch was not coded in the frame, then zero is returned.
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*
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* This CTL is only implemented for decoder instances.
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*
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* @param[out] x <tt>opus_int32*</tt>: pitch period at 48 kHz (or 0 if not available)
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*
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* @hideinitializer */
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#define OPUS_GET_PITCH(x) OPUS_GET_PITCH_REQUEST, __opus_check_int_ptr(x)
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/** Gets the encoder's configured bandpass or the decoder's last bandpass, @see OPUS_SET_BANDWIDTH
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* @param[out] x <tt>int*</tt>: Bandwidth value
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* @hideinitializer */
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#define OPUS_GET_BANDWIDTH(x) OPUS_GET_BANDWIDTH_REQUEST, __opus_check_int_ptr(x)
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/**@}*/
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/** @defgroup libinfo Opus library information functions
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* @{
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*/
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/** Converts an opus error code into a human readable string.
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*
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* @param[in] error <tt>int</tt>: Error number
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* @returns Error string
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*/
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OPUS_EXPORT const char *opus_strerror(int error);
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/** Gets the libopus version string.
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*
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* @returns Version string
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*/
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OPUS_EXPORT const char *opus_get_version_string(void);
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/**@}*/
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#ifdef __cplusplus
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}
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#endif
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#endif /* OPUS_DEFINES_H */
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