cannam@155: /* Copyright (c) 2010-2011 Xiph.Org Foundation, Skype Limited
cannam@155:    Written by Jean-Marc Valin and Koen Vos */
cannam@155: /*
cannam@155:    Redistribution and use in source and binary forms, with or without
cannam@155:    modification, are permitted provided that the following conditions
cannam@155:    are met:
cannam@155: 
cannam@155:    - Redistributions of source code must retain the above copyright
cannam@155:    notice, this list of conditions and the following disclaimer.
cannam@155: 
cannam@155:    - Redistributions in binary form must reproduce the above copyright
cannam@155:    notice, this list of conditions and the following disclaimer in the
cannam@155:    documentation and/or other materials provided with the distribution.
cannam@155: 
cannam@155:    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
cannam@155:    ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
cannam@155:    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
cannam@155:    A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
cannam@155:    OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
cannam@155:    EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
cannam@155:    PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
cannam@155:    PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
cannam@155:    LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
cannam@155:    NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
cannam@155:    SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
cannam@155: */
cannam@155: 
cannam@155: /**
cannam@155:  * @file opus_defines.h
cannam@155:  * @brief Opus reference implementation constants
cannam@155:  */
cannam@155: 
cannam@155: #ifndef OPUS_DEFINES_H
cannam@155: #define OPUS_DEFINES_H
cannam@155: 
cannam@155: #include "opus_types.h"
cannam@155: 
cannam@155: #ifdef __cplusplus
cannam@155: extern "C" {
cannam@155: #endif
cannam@155: 
cannam@155: /** @defgroup opus_errorcodes Error codes
cannam@155:  * @{
cannam@155:  */
cannam@155: /** No error @hideinitializer*/
cannam@155: #define OPUS_OK                0
cannam@155: /** One or more invalid/out of range arguments @hideinitializer*/
cannam@155: #define OPUS_BAD_ARG          -1
cannam@155: /** Not enough bytes allocated in the buffer @hideinitializer*/
cannam@155: #define OPUS_BUFFER_TOO_SMALL -2
cannam@155: /** An internal error was detected @hideinitializer*/
cannam@155: #define OPUS_INTERNAL_ERROR   -3
cannam@155: /** The compressed data passed is corrupted @hideinitializer*/
cannam@155: #define OPUS_INVALID_PACKET   -4
cannam@155: /** Invalid/unsupported request number @hideinitializer*/
cannam@155: #define OPUS_UNIMPLEMENTED    -5
cannam@155: /** An encoder or decoder structure is invalid or already freed @hideinitializer*/
cannam@155: #define OPUS_INVALID_STATE    -6
cannam@155: /** Memory allocation has failed @hideinitializer*/
cannam@155: #define OPUS_ALLOC_FAIL       -7
cannam@155: /**@}*/
cannam@155: 
cannam@155: /** @cond OPUS_INTERNAL_DOC */
cannam@155: /**Export control for opus functions */
cannam@155: 
cannam@155: #ifndef OPUS_EXPORT
cannam@155: # if defined(WIN32)
cannam@155: #  if defined(OPUS_BUILD) && defined(DLL_EXPORT)
cannam@155: #   define OPUS_EXPORT __declspec(dllexport)
cannam@155: #  else
cannam@155: #   define OPUS_EXPORT
cannam@155: #  endif
cannam@155: # elif defined(__GNUC__) && defined(OPUS_BUILD)
cannam@155: #  define OPUS_EXPORT __attribute__ ((visibility ("default")))
cannam@155: # else
cannam@155: #  define OPUS_EXPORT
cannam@155: # endif
cannam@155: #endif
cannam@155: 
cannam@155: # if !defined(OPUS_GNUC_PREREQ)
cannam@155: #  if defined(__GNUC__)&&defined(__GNUC_MINOR__)
cannam@155: #   define OPUS_GNUC_PREREQ(_maj,_min) \
cannam@155:  ((__GNUC__<<16)+__GNUC_MINOR__>=((_maj)<<16)+(_min))
cannam@155: #  else
cannam@155: #   define OPUS_GNUC_PREREQ(_maj,_min) 0
cannam@155: #  endif
cannam@155: # endif
cannam@155: 
cannam@155: #if (!defined(__STDC_VERSION__) || (__STDC_VERSION__ < 199901L) )
cannam@155: # if OPUS_GNUC_PREREQ(3,0)
cannam@155: #  define OPUS_RESTRICT __restrict__
cannam@155: # elif (defined(_MSC_VER) && _MSC_VER >= 1400)
cannam@155: #  define OPUS_RESTRICT __restrict
cannam@155: # else
cannam@155: #  define OPUS_RESTRICT
cannam@155: # endif
cannam@155: #else
cannam@155: # define OPUS_RESTRICT restrict
cannam@155: #endif
cannam@155: 
cannam@155: #if (!defined(__STDC_VERSION__) || (__STDC_VERSION__ < 199901L) )
cannam@155: # if OPUS_GNUC_PREREQ(2,7)
cannam@155: #  define OPUS_INLINE __inline__
cannam@155: # elif (defined(_MSC_VER))
cannam@155: #  define OPUS_INLINE __inline
cannam@155: # else
cannam@155: #  define OPUS_INLINE
cannam@155: # endif
cannam@155: #else
cannam@155: # define OPUS_INLINE inline
cannam@155: #endif
cannam@155: 
cannam@155: /**Warning attributes for opus functions
cannam@155:   * NONNULL is not used in OPUS_BUILD to avoid the compiler optimizing out
cannam@155:   * some paranoid null checks. */
cannam@155: #if defined(__GNUC__) && OPUS_GNUC_PREREQ(3, 4)
cannam@155: # define OPUS_WARN_UNUSED_RESULT __attribute__ ((__warn_unused_result__))
cannam@155: #else
cannam@155: # define OPUS_WARN_UNUSED_RESULT
cannam@155: #endif
cannam@155: #if !defined(OPUS_BUILD) && defined(__GNUC__) && OPUS_GNUC_PREREQ(3, 4)
cannam@155: # define OPUS_ARG_NONNULL(_x)  __attribute__ ((__nonnull__(_x)))
cannam@155: #else
cannam@155: # define OPUS_ARG_NONNULL(_x)
cannam@155: #endif
cannam@155: 
cannam@155: /** These are the actual Encoder CTL ID numbers.
cannam@155:   * They should not be used directly by applications.
cannam@155:   * In general, SETs should be even and GETs should be odd.*/
cannam@155: #define OPUS_SET_APPLICATION_REQUEST         4000
cannam@155: #define OPUS_GET_APPLICATION_REQUEST         4001
cannam@155: #define OPUS_SET_BITRATE_REQUEST             4002
cannam@155: #define OPUS_GET_BITRATE_REQUEST             4003
cannam@155: #define OPUS_SET_MAX_BANDWIDTH_REQUEST       4004
cannam@155: #define OPUS_GET_MAX_BANDWIDTH_REQUEST       4005
cannam@155: #define OPUS_SET_VBR_REQUEST                 4006
cannam@155: #define OPUS_GET_VBR_REQUEST                 4007
cannam@155: #define OPUS_SET_BANDWIDTH_REQUEST           4008
cannam@155: #define OPUS_GET_BANDWIDTH_REQUEST           4009
cannam@155: #define OPUS_SET_COMPLEXITY_REQUEST          4010
cannam@155: #define OPUS_GET_COMPLEXITY_REQUEST          4011
cannam@155: #define OPUS_SET_INBAND_FEC_REQUEST          4012
cannam@155: #define OPUS_GET_INBAND_FEC_REQUEST          4013
cannam@155: #define OPUS_SET_PACKET_LOSS_PERC_REQUEST    4014
cannam@155: #define OPUS_GET_PACKET_LOSS_PERC_REQUEST    4015
cannam@155: #define OPUS_SET_DTX_REQUEST                 4016
cannam@155: #define OPUS_GET_DTX_REQUEST                 4017
cannam@155: #define OPUS_SET_VBR_CONSTRAINT_REQUEST      4020
cannam@155: #define OPUS_GET_VBR_CONSTRAINT_REQUEST      4021
cannam@155: #define OPUS_SET_FORCE_CHANNELS_REQUEST      4022
cannam@155: #define OPUS_GET_FORCE_CHANNELS_REQUEST      4023
cannam@155: #define OPUS_SET_SIGNAL_REQUEST              4024
cannam@155: #define OPUS_GET_SIGNAL_REQUEST              4025
cannam@155: #define OPUS_GET_LOOKAHEAD_REQUEST           4027
cannam@155: /* #define OPUS_RESET_STATE 4028 */
cannam@155: #define OPUS_GET_SAMPLE_RATE_REQUEST         4029
cannam@155: #define OPUS_GET_FINAL_RANGE_REQUEST         4031
cannam@155: #define OPUS_GET_PITCH_REQUEST               4033
cannam@155: #define OPUS_SET_GAIN_REQUEST                4034
cannam@155: #define OPUS_GET_GAIN_REQUEST                4045 /* Should have been 4035 */
cannam@155: #define OPUS_SET_LSB_DEPTH_REQUEST           4036
cannam@155: #define OPUS_GET_LSB_DEPTH_REQUEST           4037
cannam@155: #define OPUS_GET_LAST_PACKET_DURATION_REQUEST 4039
cannam@155: #define OPUS_SET_EXPERT_FRAME_DURATION_REQUEST 4040
cannam@155: #define OPUS_GET_EXPERT_FRAME_DURATION_REQUEST 4041
cannam@155: #define OPUS_SET_PREDICTION_DISABLED_REQUEST 4042
cannam@155: #define OPUS_GET_PREDICTION_DISABLED_REQUEST 4043
cannam@155: /* Don't use 4045, it's already taken by OPUS_GET_GAIN_REQUEST */
cannam@155: #define OPUS_SET_PHASE_INVERSION_DISABLED_REQUEST 4046
cannam@155: #define OPUS_GET_PHASE_INVERSION_DISABLED_REQUEST 4047
cannam@155: 
cannam@155: /** Defines for the presence of extended APIs. */
cannam@155: #define OPUS_HAVE_OPUS_PROJECTION_H
cannam@155: 
cannam@155: /* Macros to trigger compilation errors when the wrong types are provided to a CTL */
cannam@155: #define __opus_check_int(x) (((void)((x) == (opus_int32)0)), (opus_int32)(x))
cannam@155: #define __opus_check_int_ptr(ptr) ((ptr) + ((ptr) - (opus_int32*)(ptr)))
cannam@155: #define __opus_check_uint_ptr(ptr) ((ptr) + ((ptr) - (opus_uint32*)(ptr)))
cannam@155: #define __opus_check_val16_ptr(ptr) ((ptr) + ((ptr) - (opus_val16*)(ptr)))
cannam@155: /** @endcond */
cannam@155: 
cannam@155: /** @defgroup opus_ctlvalues Pre-defined values for CTL interface
cannam@155:   * @see opus_genericctls, opus_encoderctls
cannam@155:   * @{
cannam@155:   */
cannam@155: /* Values for the various encoder CTLs */
cannam@155: #define OPUS_AUTO                           -1000 /**<Auto/default setting @hideinitializer*/
cannam@155: #define OPUS_BITRATE_MAX                       -1 /**<Maximum bitrate @hideinitializer*/
cannam@155: 
cannam@155: /** Best for most VoIP/videoconference applications where listening quality and intelligibility matter most
cannam@155:  * @hideinitializer */
cannam@155: #define OPUS_APPLICATION_VOIP                2048
cannam@155: /** Best for broadcast/high-fidelity application where the decoded audio should be as close as possible to the input
cannam@155:  * @hideinitializer */
cannam@155: #define OPUS_APPLICATION_AUDIO               2049
cannam@155: /** Only use when lowest-achievable latency is what matters most. Voice-optimized modes cannot be used.
cannam@155:  * @hideinitializer */
cannam@155: #define OPUS_APPLICATION_RESTRICTED_LOWDELAY 2051
cannam@155: 
cannam@155: #define OPUS_SIGNAL_VOICE                    3001 /**< Signal being encoded is voice */
cannam@155: #define OPUS_SIGNAL_MUSIC                    3002 /**< Signal being encoded is music */
cannam@155: #define OPUS_BANDWIDTH_NARROWBAND            1101 /**< 4 kHz bandpass @hideinitializer*/
cannam@155: #define OPUS_BANDWIDTH_MEDIUMBAND            1102 /**< 6 kHz bandpass @hideinitializer*/
cannam@155: #define OPUS_BANDWIDTH_WIDEBAND              1103 /**< 8 kHz bandpass @hideinitializer*/
cannam@155: #define OPUS_BANDWIDTH_SUPERWIDEBAND         1104 /**<12 kHz bandpass @hideinitializer*/
cannam@155: #define OPUS_BANDWIDTH_FULLBAND              1105 /**<20 kHz bandpass @hideinitializer*/
cannam@155: 
cannam@155: #define OPUS_FRAMESIZE_ARG                   5000 /**< Select frame size from the argument (default) */
cannam@155: #define OPUS_FRAMESIZE_2_5_MS                5001 /**< Use 2.5 ms frames */
cannam@155: #define OPUS_FRAMESIZE_5_MS                  5002 /**< Use 5 ms frames */
cannam@155: #define OPUS_FRAMESIZE_10_MS                 5003 /**< Use 10 ms frames */
cannam@155: #define OPUS_FRAMESIZE_20_MS                 5004 /**< Use 20 ms frames */
cannam@155: #define OPUS_FRAMESIZE_40_MS                 5005 /**< Use 40 ms frames */
cannam@155: #define OPUS_FRAMESIZE_60_MS                 5006 /**< Use 60 ms frames */
cannam@155: #define OPUS_FRAMESIZE_80_MS                 5007 /**< Use 80 ms frames */
cannam@155: #define OPUS_FRAMESIZE_100_MS                5008 /**< Use 100 ms frames */
cannam@155: #define OPUS_FRAMESIZE_120_MS                5009 /**< Use 120 ms frames */
cannam@155: 
cannam@155: /**@}*/
cannam@155: 
cannam@155: 
cannam@155: /** @defgroup opus_encoderctls Encoder related CTLs
cannam@155:   *
cannam@155:   * These are convenience macros for use with the \c opus_encode_ctl
cannam@155:   * interface. They are used to generate the appropriate series of
cannam@155:   * arguments for that call, passing the correct type, size and so
cannam@155:   * on as expected for each particular request.
cannam@155:   *
cannam@155:   * Some usage examples:
cannam@155:   *
cannam@155:   * @code
cannam@155:   * int ret;
cannam@155:   * ret = opus_encoder_ctl(enc_ctx, OPUS_SET_BANDWIDTH(OPUS_AUTO));
cannam@155:   * if (ret != OPUS_OK) return ret;
cannam@155:   *
cannam@155:   * opus_int32 rate;
cannam@155:   * opus_encoder_ctl(enc_ctx, OPUS_GET_BANDWIDTH(&rate));
cannam@155:   *
cannam@155:   * opus_encoder_ctl(enc_ctx, OPUS_RESET_STATE);
cannam@155:   * @endcode
cannam@155:   *
cannam@155:   * @see opus_genericctls, opus_encoder
cannam@155:   * @{
cannam@155:   */
cannam@155: 
cannam@155: /** Configures the encoder's computational complexity.
cannam@155:   * The supported range is 0-10 inclusive with 10 representing the highest complexity.
cannam@155:   * @see OPUS_GET_COMPLEXITY
cannam@155:   * @param[in] x <tt>opus_int32</tt>: Allowed values: 0-10, inclusive.
cannam@155:   *
cannam@155:   * @hideinitializer */
cannam@155: #define OPUS_SET_COMPLEXITY(x) OPUS_SET_COMPLEXITY_REQUEST, __opus_check_int(x)
cannam@155: /** Gets the encoder's complexity configuration.
cannam@155:   * @see OPUS_SET_COMPLEXITY
cannam@155:   * @param[out] x <tt>opus_int32 *</tt>: Returns a value in the range 0-10,
cannam@155:   *                                      inclusive.
cannam@155:   * @hideinitializer */
cannam@155: #define OPUS_GET_COMPLEXITY(x) OPUS_GET_COMPLEXITY_REQUEST, __opus_check_int_ptr(x)
cannam@155: 
cannam@155: /** Configures the bitrate in the encoder.
cannam@155:   * Rates from 500 to 512000 bits per second are meaningful, as well as the
cannam@155:   * special values #OPUS_AUTO and #OPUS_BITRATE_MAX.
cannam@155:   * The value #OPUS_BITRATE_MAX can be used to cause the codec to use as much
cannam@155:   * rate as it can, which is useful for controlling the rate by adjusting the
cannam@155:   * output buffer size.
cannam@155:   * @see OPUS_GET_BITRATE
cannam@155:   * @param[in] x <tt>opus_int32</tt>: Bitrate in bits per second. The default
cannam@155:   *                                   is determined based on the number of
cannam@155:   *                                   channels and the input sampling rate.
cannam@155:   * @hideinitializer */
cannam@155: #define OPUS_SET_BITRATE(x) OPUS_SET_BITRATE_REQUEST, __opus_check_int(x)
cannam@155: /** Gets the encoder's bitrate configuration.
cannam@155:   * @see OPUS_SET_BITRATE
cannam@155:   * @param[out] x <tt>opus_int32 *</tt>: Returns the bitrate in bits per second.
cannam@155:   *                                      The default is determined based on the
cannam@155:   *                                      number of channels and the input
cannam@155:   *                                      sampling rate.
cannam@155:   * @hideinitializer */
cannam@155: #define OPUS_GET_BITRATE(x) OPUS_GET_BITRATE_REQUEST, __opus_check_int_ptr(x)
cannam@155: 
cannam@155: /** Enables or disables variable bitrate (VBR) in the encoder.
cannam@155:   * The configured bitrate may not be met exactly because frames must
cannam@155:   * be an integer number of bytes in length.
cannam@155:   * @see OPUS_GET_VBR
cannam@155:   * @see OPUS_SET_VBR_CONSTRAINT
cannam@155:   * @param[in] x <tt>opus_int32</tt>: Allowed values:
cannam@155:   * <dl>
cannam@155:   * <dt>0</dt><dd>Hard CBR. For LPC/hybrid modes at very low bit-rate, this can
cannam@155:   *               cause noticeable quality degradation.</dd>
cannam@155:   * <dt>1</dt><dd>VBR (default). The exact type of VBR is controlled by
cannam@155:   *               #OPUS_SET_VBR_CONSTRAINT.</dd>
cannam@155:   * </dl>
cannam@155:   * @hideinitializer */
cannam@155: #define OPUS_SET_VBR(x) OPUS_SET_VBR_REQUEST, __opus_check_int(x)
cannam@155: /** Determine if variable bitrate (VBR) is enabled in the encoder.
cannam@155:   * @see OPUS_SET_VBR
cannam@155:   * @see OPUS_GET_VBR_CONSTRAINT
cannam@155:   * @param[out] x <tt>opus_int32 *</tt>: Returns one of the following values:
cannam@155:   * <dl>
cannam@155:   * <dt>0</dt><dd>Hard CBR.</dd>
cannam@155:   * <dt>1</dt><dd>VBR (default). The exact type of VBR may be retrieved via
cannam@155:   *               #OPUS_GET_VBR_CONSTRAINT.</dd>
cannam@155:   * </dl>
cannam@155:   * @hideinitializer */
cannam@155: #define OPUS_GET_VBR(x) OPUS_GET_VBR_REQUEST, __opus_check_int_ptr(x)
cannam@155: 
cannam@155: /** Enables or disables constrained VBR in the encoder.
cannam@155:   * This setting is ignored when the encoder is in CBR mode.
cannam@155:   * @warning Only the MDCT mode of Opus currently heeds the constraint.
cannam@155:   *  Speech mode ignores it completely, hybrid mode may fail to obey it
cannam@155:   *  if the LPC layer uses more bitrate than the constraint would have
cannam@155:   *  permitted.
cannam@155:   * @see OPUS_GET_VBR_CONSTRAINT
cannam@155:   * @see OPUS_SET_VBR
cannam@155:   * @param[in] x <tt>opus_int32</tt>: Allowed values:
cannam@155:   * <dl>
cannam@155:   * <dt>0</dt><dd>Unconstrained VBR.</dd>
cannam@155:   * <dt>1</dt><dd>Constrained VBR (default). This creates a maximum of one
cannam@155:   *               frame of buffering delay assuming a transport with a
cannam@155:   *               serialization speed of the nominal bitrate.</dd>
cannam@155:   * </dl>
cannam@155:   * @hideinitializer */
cannam@155: #define OPUS_SET_VBR_CONSTRAINT(x) OPUS_SET_VBR_CONSTRAINT_REQUEST, __opus_check_int(x)
cannam@155: /** Determine if constrained VBR is enabled in the encoder.
cannam@155:   * @see OPUS_SET_VBR_CONSTRAINT
cannam@155:   * @see OPUS_GET_VBR
cannam@155:   * @param[out] x <tt>opus_int32 *</tt>: Returns one of the following values:
cannam@155:   * <dl>
cannam@155:   * <dt>0</dt><dd>Unconstrained VBR.</dd>
cannam@155:   * <dt>1</dt><dd>Constrained VBR (default).</dd>
cannam@155:   * </dl>
cannam@155:   * @hideinitializer */
cannam@155: #define OPUS_GET_VBR_CONSTRAINT(x) OPUS_GET_VBR_CONSTRAINT_REQUEST, __opus_check_int_ptr(x)
cannam@155: 
cannam@155: /** Configures mono/stereo forcing in the encoder.
cannam@155:   * This can force the encoder to produce packets encoded as either mono or
cannam@155:   * stereo, regardless of the format of the input audio. This is useful when
cannam@155:   * the caller knows that the input signal is currently a mono source embedded
cannam@155:   * in a stereo stream.
cannam@155:   * @see OPUS_GET_FORCE_CHANNELS
cannam@155:   * @param[in] x <tt>opus_int32</tt>: Allowed values:
cannam@155:   * <dl>
cannam@155:   * <dt>#OPUS_AUTO</dt><dd>Not forced (default)</dd>
cannam@155:   * <dt>1</dt>         <dd>Forced mono</dd>
cannam@155:   * <dt>2</dt>         <dd>Forced stereo</dd>
cannam@155:   * </dl>
cannam@155:   * @hideinitializer */
cannam@155: #define OPUS_SET_FORCE_CHANNELS(x) OPUS_SET_FORCE_CHANNELS_REQUEST, __opus_check_int(x)
cannam@155: /** Gets the encoder's forced channel configuration.
cannam@155:   * @see OPUS_SET_FORCE_CHANNELS
cannam@155:   * @param[out] x <tt>opus_int32 *</tt>:
cannam@155:   * <dl>
cannam@155:   * <dt>#OPUS_AUTO</dt><dd>Not forced (default)</dd>
cannam@155:   * <dt>1</dt>         <dd>Forced mono</dd>
cannam@155:   * <dt>2</dt>         <dd>Forced stereo</dd>
cannam@155:   * </dl>
cannam@155:   * @hideinitializer */
cannam@155: #define OPUS_GET_FORCE_CHANNELS(x) OPUS_GET_FORCE_CHANNELS_REQUEST, __opus_check_int_ptr(x)
cannam@155: 
cannam@155: /** Configures the maximum bandpass that the encoder will select automatically.
cannam@155:   * Applications should normally use this instead of #OPUS_SET_BANDWIDTH
cannam@155:   * (leaving that set to the default, #OPUS_AUTO). This allows the
cannam@155:   * application to set an upper bound based on the type of input it is
cannam@155:   * providing, but still gives the encoder the freedom to reduce the bandpass
cannam@155:   * when the bitrate becomes too low, for better overall quality.
cannam@155:   * @see OPUS_GET_MAX_BANDWIDTH
cannam@155:   * @param[in] x <tt>opus_int32</tt>: Allowed values:
cannam@155:   * <dl>
cannam@155:   * <dt>OPUS_BANDWIDTH_NARROWBAND</dt>    <dd>4 kHz passband</dd>
cannam@155:   * <dt>OPUS_BANDWIDTH_MEDIUMBAND</dt>    <dd>6 kHz passband</dd>
cannam@155:   * <dt>OPUS_BANDWIDTH_WIDEBAND</dt>      <dd>8 kHz passband</dd>
cannam@155:   * <dt>OPUS_BANDWIDTH_SUPERWIDEBAND</dt><dd>12 kHz passband</dd>
cannam@155:   * <dt>OPUS_BANDWIDTH_FULLBAND</dt>     <dd>20 kHz passband (default)</dd>
cannam@155:   * </dl>
cannam@155:   * @hideinitializer */
cannam@155: #define OPUS_SET_MAX_BANDWIDTH(x) OPUS_SET_MAX_BANDWIDTH_REQUEST, __opus_check_int(x)
cannam@155: 
cannam@155: /** Gets the encoder's configured maximum allowed bandpass.
cannam@155:   * @see OPUS_SET_MAX_BANDWIDTH
cannam@155:   * @param[out] x <tt>opus_int32 *</tt>: Allowed values:
cannam@155:   * <dl>
cannam@155:   * <dt>#OPUS_BANDWIDTH_NARROWBAND</dt>    <dd>4 kHz passband</dd>
cannam@155:   * <dt>#OPUS_BANDWIDTH_MEDIUMBAND</dt>    <dd>6 kHz passband</dd>
cannam@155:   * <dt>#OPUS_BANDWIDTH_WIDEBAND</dt>      <dd>8 kHz passband</dd>
cannam@155:   * <dt>#OPUS_BANDWIDTH_SUPERWIDEBAND</dt><dd>12 kHz passband</dd>
cannam@155:   * <dt>#OPUS_BANDWIDTH_FULLBAND</dt>     <dd>20 kHz passband (default)</dd>
cannam@155:   * </dl>
cannam@155:   * @hideinitializer */
cannam@155: #define OPUS_GET_MAX_BANDWIDTH(x) OPUS_GET_MAX_BANDWIDTH_REQUEST, __opus_check_int_ptr(x)
cannam@155: 
cannam@155: /** Sets the encoder's bandpass to a specific value.
cannam@155:   * This prevents the encoder from automatically selecting the bandpass based
cannam@155:   * on the available bitrate. If an application knows the bandpass of the input
cannam@155:   * audio it is providing, it should normally use #OPUS_SET_MAX_BANDWIDTH
cannam@155:   * instead, which still gives the encoder the freedom to reduce the bandpass
cannam@155:   * when the bitrate becomes too low, for better overall quality.
cannam@155:   * @see OPUS_GET_BANDWIDTH
cannam@155:   * @param[in] x <tt>opus_int32</tt>: Allowed values:
cannam@155:   * <dl>
cannam@155:   * <dt>#OPUS_AUTO</dt>                    <dd>(default)</dd>
cannam@155:   * <dt>#OPUS_BANDWIDTH_NARROWBAND</dt>    <dd>4 kHz passband</dd>
cannam@155:   * <dt>#OPUS_BANDWIDTH_MEDIUMBAND</dt>    <dd>6 kHz passband</dd>
cannam@155:   * <dt>#OPUS_BANDWIDTH_WIDEBAND</dt>      <dd>8 kHz passband</dd>
cannam@155:   * <dt>#OPUS_BANDWIDTH_SUPERWIDEBAND</dt><dd>12 kHz passband</dd>
cannam@155:   * <dt>#OPUS_BANDWIDTH_FULLBAND</dt>     <dd>20 kHz passband</dd>
cannam@155:   * </dl>
cannam@155:   * @hideinitializer */
cannam@155: #define OPUS_SET_BANDWIDTH(x) OPUS_SET_BANDWIDTH_REQUEST, __opus_check_int(x)
cannam@155: 
cannam@155: /** Configures the type of signal being encoded.
cannam@155:   * This is a hint which helps the encoder's mode selection.
cannam@155:   * @see OPUS_GET_SIGNAL
cannam@155:   * @param[in] x <tt>opus_int32</tt>: Allowed values:
cannam@155:   * <dl>
cannam@155:   * <dt>#OPUS_AUTO</dt>        <dd>(default)</dd>
cannam@155:   * <dt>#OPUS_SIGNAL_VOICE</dt><dd>Bias thresholds towards choosing LPC or Hybrid modes.</dd>
cannam@155:   * <dt>#OPUS_SIGNAL_MUSIC</dt><dd>Bias thresholds towards choosing MDCT modes.</dd>
cannam@155:   * </dl>
cannam@155:   * @hideinitializer */
cannam@155: #define OPUS_SET_SIGNAL(x) OPUS_SET_SIGNAL_REQUEST, __opus_check_int(x)
cannam@155: /** Gets the encoder's configured signal type.
cannam@155:   * @see OPUS_SET_SIGNAL
cannam@155:   * @param[out] x <tt>opus_int32 *</tt>: Returns one of the following values:
cannam@155:   * <dl>
cannam@155:   * <dt>#OPUS_AUTO</dt>        <dd>(default)</dd>
cannam@155:   * <dt>#OPUS_SIGNAL_VOICE</dt><dd>Bias thresholds towards choosing LPC or Hybrid modes.</dd>
cannam@155:   * <dt>#OPUS_SIGNAL_MUSIC</dt><dd>Bias thresholds towards choosing MDCT modes.</dd>
cannam@155:   * </dl>
cannam@155:   * @hideinitializer */
cannam@155: #define OPUS_GET_SIGNAL(x) OPUS_GET_SIGNAL_REQUEST, __opus_check_int_ptr(x)
cannam@155: 
cannam@155: 
cannam@155: /** Configures the encoder's intended application.
cannam@155:   * The initial value is a mandatory argument to the encoder_create function.
cannam@155:   * @see OPUS_GET_APPLICATION
cannam@155:   * @param[in] x <tt>opus_int32</tt>: Returns one of the following values:
cannam@155:   * <dl>
cannam@155:   * <dt>#OPUS_APPLICATION_VOIP</dt>
cannam@155:   * <dd>Process signal for improved speech intelligibility.</dd>
cannam@155:   * <dt>#OPUS_APPLICATION_AUDIO</dt>
cannam@155:   * <dd>Favor faithfulness to the original input.</dd>
cannam@155:   * <dt>#OPUS_APPLICATION_RESTRICTED_LOWDELAY</dt>
cannam@155:   * <dd>Configure the minimum possible coding delay by disabling certain modes
cannam@155:   * of operation.</dd>
cannam@155:   * </dl>
cannam@155:   * @hideinitializer */
cannam@155: #define OPUS_SET_APPLICATION(x) OPUS_SET_APPLICATION_REQUEST, __opus_check_int(x)
cannam@155: /** Gets the encoder's configured application.
cannam@155:   * @see OPUS_SET_APPLICATION
cannam@155:   * @param[out] x <tt>opus_int32 *</tt>: Returns one of the following values:
cannam@155:   * <dl>
cannam@155:   * <dt>#OPUS_APPLICATION_VOIP</dt>
cannam@155:   * <dd>Process signal for improved speech intelligibility.</dd>
cannam@155:   * <dt>#OPUS_APPLICATION_AUDIO</dt>
cannam@155:   * <dd>Favor faithfulness to the original input.</dd>
cannam@155:   * <dt>#OPUS_APPLICATION_RESTRICTED_LOWDELAY</dt>
cannam@155:   * <dd>Configure the minimum possible coding delay by disabling certain modes
cannam@155:   * of operation.</dd>
cannam@155:   * </dl>
cannam@155:   * @hideinitializer */
cannam@155: #define OPUS_GET_APPLICATION(x) OPUS_GET_APPLICATION_REQUEST, __opus_check_int_ptr(x)
cannam@155: 
cannam@155: /** Gets the total samples of delay added by the entire codec.
cannam@155:   * This can be queried by the encoder and then the provided number of samples can be
cannam@155:   * skipped on from the start of the decoder's output to provide time aligned input
cannam@155:   * and output. From the perspective of a decoding application the real data begins this many
cannam@155:   * samples late.
cannam@155:   *
cannam@155:   * The decoder contribution to this delay is identical for all decoders, but the
cannam@155:   * encoder portion of the delay may vary from implementation to implementation,
cannam@155:   * version to version, or even depend on the encoder's initial configuration.
cannam@155:   * Applications needing delay compensation should call this CTL rather than
cannam@155:   * hard-coding a value.
cannam@155:   * @param[out] x <tt>opus_int32 *</tt>:   Number of lookahead samples
cannam@155:   * @hideinitializer */
cannam@155: #define OPUS_GET_LOOKAHEAD(x) OPUS_GET_LOOKAHEAD_REQUEST, __opus_check_int_ptr(x)
cannam@155: 
cannam@155: /** Configures the encoder's use of inband forward error correction (FEC).
cannam@155:   * @note This is only applicable to the LPC layer
cannam@155:   * @see OPUS_GET_INBAND_FEC
cannam@155:   * @param[in] x <tt>opus_int32</tt>: Allowed values:
cannam@155:   * <dl>
cannam@155:   * <dt>0</dt><dd>Disable inband FEC (default).</dd>
cannam@155:   * <dt>1</dt><dd>Enable inband FEC.</dd>
cannam@155:   * </dl>
cannam@155:   * @hideinitializer */
cannam@155: #define OPUS_SET_INBAND_FEC(x) OPUS_SET_INBAND_FEC_REQUEST, __opus_check_int(x)
cannam@155: /** Gets encoder's configured use of inband forward error correction.
cannam@155:   * @see OPUS_SET_INBAND_FEC
cannam@155:   * @param[out] x <tt>opus_int32 *</tt>: Returns one of the following values:
cannam@155:   * <dl>
cannam@155:   * <dt>0</dt><dd>Inband FEC disabled (default).</dd>
cannam@155:   * <dt>1</dt><dd>Inband FEC enabled.</dd>
cannam@155:   * </dl>
cannam@155:   * @hideinitializer */
cannam@155: #define OPUS_GET_INBAND_FEC(x) OPUS_GET_INBAND_FEC_REQUEST, __opus_check_int_ptr(x)
cannam@155: 
cannam@155: /** Configures the encoder's expected packet loss percentage.
cannam@155:   * Higher values trigger progressively more loss resistant behavior in the encoder
cannam@155:   * at the expense of quality at a given bitrate in the absence of packet loss, but
cannam@155:   * greater quality under loss.
cannam@155:   * @see OPUS_GET_PACKET_LOSS_PERC
cannam@155:   * @param[in] x <tt>opus_int32</tt>:   Loss percentage in the range 0-100, inclusive (default: 0).
cannam@155:   * @hideinitializer */
cannam@155: #define OPUS_SET_PACKET_LOSS_PERC(x) OPUS_SET_PACKET_LOSS_PERC_REQUEST, __opus_check_int(x)
cannam@155: /** Gets the encoder's configured packet loss percentage.
cannam@155:   * @see OPUS_SET_PACKET_LOSS_PERC
cannam@155:   * @param[out] x <tt>opus_int32 *</tt>: Returns the configured loss percentage
cannam@155:   *                                      in the range 0-100, inclusive (default: 0).
cannam@155:   * @hideinitializer */
cannam@155: #define OPUS_GET_PACKET_LOSS_PERC(x) OPUS_GET_PACKET_LOSS_PERC_REQUEST, __opus_check_int_ptr(x)
cannam@155: 
cannam@155: /** Configures the encoder's use of discontinuous transmission (DTX).
cannam@155:   * @note This is only applicable to the LPC layer
cannam@155:   * @see OPUS_GET_DTX
cannam@155:   * @param[in] x <tt>opus_int32</tt>: Allowed values:
cannam@155:   * <dl>
cannam@155:   * <dt>0</dt><dd>Disable DTX (default).</dd>
cannam@155:   * <dt>1</dt><dd>Enabled DTX.</dd>
cannam@155:   * </dl>
cannam@155:   * @hideinitializer */
cannam@155: #define OPUS_SET_DTX(x) OPUS_SET_DTX_REQUEST, __opus_check_int(x)
cannam@155: /** Gets encoder's configured use of discontinuous transmission.
cannam@155:   * @see OPUS_SET_DTX
cannam@155:   * @param[out] x <tt>opus_int32 *</tt>: Returns one of the following values:
cannam@155:   * <dl>
cannam@155:   * <dt>0</dt><dd>DTX disabled (default).</dd>
cannam@155:   * <dt>1</dt><dd>DTX enabled.</dd>
cannam@155:   * </dl>
cannam@155:   * @hideinitializer */
cannam@155: #define OPUS_GET_DTX(x) OPUS_GET_DTX_REQUEST, __opus_check_int_ptr(x)
cannam@155: /** Configures the depth of signal being encoded.
cannam@155:   *
cannam@155:   * This is a hint which helps the encoder identify silence and near-silence.
cannam@155:   * It represents the number of significant bits of linear intensity below
cannam@155:   * which the signal contains ignorable quantization or other noise.
cannam@155:   *
cannam@155:   * For example, OPUS_SET_LSB_DEPTH(14) would be an appropriate setting
cannam@155:   * for G.711 u-law input. OPUS_SET_LSB_DEPTH(16) would be appropriate
cannam@155:   * for 16-bit linear pcm input with opus_encode_float().
cannam@155:   *
cannam@155:   * When using opus_encode() instead of opus_encode_float(), or when libopus
cannam@155:   * is compiled for fixed-point, the encoder uses the minimum of the value
cannam@155:   * set here and the value 16.
cannam@155:   *
cannam@155:   * @see OPUS_GET_LSB_DEPTH
cannam@155:   * @param[in] x <tt>opus_int32</tt>: Input precision in bits, between 8 and 24
cannam@155:   *                                   (default: 24).
cannam@155:   * @hideinitializer */
cannam@155: #define OPUS_SET_LSB_DEPTH(x) OPUS_SET_LSB_DEPTH_REQUEST, __opus_check_int(x)
cannam@155: /** Gets the encoder's configured signal depth.
cannam@155:   * @see OPUS_SET_LSB_DEPTH
cannam@155:   * @param[out] x <tt>opus_int32 *</tt>: Input precision in bits, between 8 and
cannam@155:   *                                      24 (default: 24).
cannam@155:   * @hideinitializer */
cannam@155: #define OPUS_GET_LSB_DEPTH(x) OPUS_GET_LSB_DEPTH_REQUEST, __opus_check_int_ptr(x)
cannam@155: 
cannam@155: /** Configures the encoder's use of variable duration frames.
cannam@155:   * When variable duration is enabled, the encoder is free to use a shorter frame
cannam@155:   * size than the one requested in the opus_encode*() call.
cannam@155:   * It is then the user's responsibility
cannam@155:   * to verify how much audio was encoded by checking the ToC byte of the encoded
cannam@155:   * packet. The part of the audio that was not encoded needs to be resent to the
cannam@155:   * encoder for the next call. Do not use this option unless you <b>really</b>
cannam@155:   * know what you are doing.
cannam@155:   * @see OPUS_GET_EXPERT_FRAME_DURATION
cannam@155:   * @param[in] x <tt>opus_int32</tt>: Allowed values:
cannam@155:   * <dl>
cannam@155:   * <dt>OPUS_FRAMESIZE_ARG</dt><dd>Select frame size from the argument (default).</dd>
cannam@155:   * <dt>OPUS_FRAMESIZE_2_5_MS</dt><dd>Use 2.5 ms frames.</dd>
cannam@155:   * <dt>OPUS_FRAMESIZE_5_MS</dt><dd>Use 5 ms frames.</dd>
cannam@155:   * <dt>OPUS_FRAMESIZE_10_MS</dt><dd>Use 10 ms frames.</dd>
cannam@155:   * <dt>OPUS_FRAMESIZE_20_MS</dt><dd>Use 20 ms frames.</dd>
cannam@155:   * <dt>OPUS_FRAMESIZE_40_MS</dt><dd>Use 40 ms frames.</dd>
cannam@155:   * <dt>OPUS_FRAMESIZE_60_MS</dt><dd>Use 60 ms frames.</dd>
cannam@155:   * <dt>OPUS_FRAMESIZE_80_MS</dt><dd>Use 80 ms frames.</dd>
cannam@155:   * <dt>OPUS_FRAMESIZE_100_MS</dt><dd>Use 100 ms frames.</dd>
cannam@155:   * <dt>OPUS_FRAMESIZE_120_MS</dt><dd>Use 120 ms frames.</dd>
cannam@155:   * </dl>
cannam@155:   * @hideinitializer */
cannam@155: #define OPUS_SET_EXPERT_FRAME_DURATION(x) OPUS_SET_EXPERT_FRAME_DURATION_REQUEST, __opus_check_int(x)
cannam@155: /** Gets the encoder's configured use of variable duration frames.
cannam@155:   * @see OPUS_SET_EXPERT_FRAME_DURATION
cannam@155:   * @param[out] x <tt>opus_int32 *</tt>: Returns one of the following values:
cannam@155:   * <dl>
cannam@155:   * <dt>OPUS_FRAMESIZE_ARG</dt><dd>Select frame size from the argument (default).</dd>
cannam@155:   * <dt>OPUS_FRAMESIZE_2_5_MS</dt><dd>Use 2.5 ms frames.</dd>
cannam@155:   * <dt>OPUS_FRAMESIZE_5_MS</dt><dd>Use 5 ms frames.</dd>
cannam@155:   * <dt>OPUS_FRAMESIZE_10_MS</dt><dd>Use 10 ms frames.</dd>
cannam@155:   * <dt>OPUS_FRAMESIZE_20_MS</dt><dd>Use 20 ms frames.</dd>
cannam@155:   * <dt>OPUS_FRAMESIZE_40_MS</dt><dd>Use 40 ms frames.</dd>
cannam@155:   * <dt>OPUS_FRAMESIZE_60_MS</dt><dd>Use 60 ms frames.</dd>
cannam@155:   * <dt>OPUS_FRAMESIZE_80_MS</dt><dd>Use 80 ms frames.</dd>
cannam@155:   * <dt>OPUS_FRAMESIZE_100_MS</dt><dd>Use 100 ms frames.</dd>
cannam@155:   * <dt>OPUS_FRAMESIZE_120_MS</dt><dd>Use 120 ms frames.</dd>
cannam@155:   * </dl>
cannam@155:   * @hideinitializer */
cannam@155: #define OPUS_GET_EXPERT_FRAME_DURATION(x) OPUS_GET_EXPERT_FRAME_DURATION_REQUEST, __opus_check_int_ptr(x)
cannam@155: 
cannam@155: /** If set to 1, disables almost all use of prediction, making frames almost
cannam@155:   * completely independent. This reduces quality.
cannam@155:   * @see OPUS_GET_PREDICTION_DISABLED
cannam@155:   * @param[in] x <tt>opus_int32</tt>: Allowed values:
cannam@155:   * <dl>
cannam@155:   * <dt>0</dt><dd>Enable prediction (default).</dd>
cannam@155:   * <dt>1</dt><dd>Disable prediction.</dd>
cannam@155:   * </dl>
cannam@155:   * @hideinitializer */
cannam@155: #define OPUS_SET_PREDICTION_DISABLED(x) OPUS_SET_PREDICTION_DISABLED_REQUEST, __opus_check_int(x)
cannam@155: /** Gets the encoder's configured prediction status.
cannam@155:   * @see OPUS_SET_PREDICTION_DISABLED
cannam@155:   * @param[out] x <tt>opus_int32 *</tt>: Returns one of the following values:
cannam@155:   * <dl>
cannam@155:   * <dt>0</dt><dd>Prediction enabled (default).</dd>
cannam@155:   * <dt>1</dt><dd>Prediction disabled.</dd>
cannam@155:   * </dl>
cannam@155:   * @hideinitializer */
cannam@155: #define OPUS_GET_PREDICTION_DISABLED(x) OPUS_GET_PREDICTION_DISABLED_REQUEST, __opus_check_int_ptr(x)
cannam@155: 
cannam@155: /**@}*/
cannam@155: 
cannam@155: /** @defgroup opus_genericctls Generic CTLs
cannam@155:   *
cannam@155:   * These macros are used with the \c opus_decoder_ctl and
cannam@155:   * \c opus_encoder_ctl calls to generate a particular
cannam@155:   * request.
cannam@155:   *
cannam@155:   * When called on an \c OpusDecoder they apply to that
cannam@155:   * particular decoder instance. When called on an
cannam@155:   * \c OpusEncoder they apply to the corresponding setting
cannam@155:   * on that encoder instance, if present.
cannam@155:   *
cannam@155:   * Some usage examples:
cannam@155:   *
cannam@155:   * @code
cannam@155:   * int ret;
cannam@155:   * opus_int32 pitch;
cannam@155:   * ret = opus_decoder_ctl(dec_ctx, OPUS_GET_PITCH(&pitch));
cannam@155:   * if (ret == OPUS_OK) return ret;
cannam@155:   *
cannam@155:   * opus_encoder_ctl(enc_ctx, OPUS_RESET_STATE);
cannam@155:   * opus_decoder_ctl(dec_ctx, OPUS_RESET_STATE);
cannam@155:   *
cannam@155:   * opus_int32 enc_bw, dec_bw;
cannam@155:   * opus_encoder_ctl(enc_ctx, OPUS_GET_BANDWIDTH(&enc_bw));
cannam@155:   * opus_decoder_ctl(dec_ctx, OPUS_GET_BANDWIDTH(&dec_bw));
cannam@155:   * if (enc_bw != dec_bw) {
cannam@155:   *   printf("packet bandwidth mismatch!\n");
cannam@155:   * }
cannam@155:   * @endcode
cannam@155:   *
cannam@155:   * @see opus_encoder, opus_decoder_ctl, opus_encoder_ctl, opus_decoderctls, opus_encoderctls
cannam@155:   * @{
cannam@155:   */
cannam@155: 
cannam@155: /** Resets the codec state to be equivalent to a freshly initialized state.
cannam@155:   * This should be called when switching streams in order to prevent
cannam@155:   * the back to back decoding from giving different results from
cannam@155:   * one at a time decoding.
cannam@155:   * @hideinitializer */
cannam@155: #define OPUS_RESET_STATE 4028
cannam@155: 
cannam@155: /** Gets the final state of the codec's entropy coder.
cannam@155:   * This is used for testing purposes,
cannam@155:   * The encoder and decoder state should be identical after coding a payload
cannam@155:   * (assuming no data corruption or software bugs)
cannam@155:   *
cannam@155:   * @param[out] x <tt>opus_uint32 *</tt>: Entropy coder state
cannam@155:   *
cannam@155:   * @hideinitializer */
cannam@155: #define OPUS_GET_FINAL_RANGE(x) OPUS_GET_FINAL_RANGE_REQUEST, __opus_check_uint_ptr(x)
cannam@155: 
cannam@155: /** Gets the encoder's configured bandpass or the decoder's last bandpass.
cannam@155:   * @see OPUS_SET_BANDWIDTH
cannam@155:   * @param[out] x <tt>opus_int32 *</tt>: Returns one of the following values:
cannam@155:   * <dl>
cannam@155:   * <dt>#OPUS_AUTO</dt>                    <dd>(default)</dd>
cannam@155:   * <dt>#OPUS_BANDWIDTH_NARROWBAND</dt>    <dd>4 kHz passband</dd>
cannam@155:   * <dt>#OPUS_BANDWIDTH_MEDIUMBAND</dt>    <dd>6 kHz passband</dd>
cannam@155:   * <dt>#OPUS_BANDWIDTH_WIDEBAND</dt>      <dd>8 kHz passband</dd>
cannam@155:   * <dt>#OPUS_BANDWIDTH_SUPERWIDEBAND</dt><dd>12 kHz passband</dd>
cannam@155:   * <dt>#OPUS_BANDWIDTH_FULLBAND</dt>     <dd>20 kHz passband</dd>
cannam@155:   * </dl>
cannam@155:   * @hideinitializer */
cannam@155: #define OPUS_GET_BANDWIDTH(x) OPUS_GET_BANDWIDTH_REQUEST, __opus_check_int_ptr(x)
cannam@155: 
cannam@155: /** Gets the sampling rate the encoder or decoder was initialized with.
cannam@155:   * This simply returns the <code>Fs</code> value passed to opus_encoder_init()
cannam@155:   * or opus_decoder_init().
cannam@155:   * @param[out] x <tt>opus_int32 *</tt>: Sampling rate of encoder or decoder.
cannam@155:   * @hideinitializer
cannam@155:   */
cannam@155: #define OPUS_GET_SAMPLE_RATE(x) OPUS_GET_SAMPLE_RATE_REQUEST, __opus_check_int_ptr(x)
cannam@155: 
cannam@155: /** If set to 1, disables the use of phase inversion for intensity stereo,
cannam@155:   * improving the quality of mono downmixes, but slightly reducing normal
cannam@155:   * stereo quality. Disabling phase inversion in the decoder does not comply
cannam@155:   * with RFC 6716, although it does not cause any interoperability issue and
cannam@155:   * is expected to become part of the Opus standard once RFC 6716 is updated
cannam@155:   * by draft-ietf-codec-opus-update.
cannam@155:   * @see OPUS_GET_PHASE_INVERSION_DISABLED
cannam@155:   * @param[in] x <tt>opus_int32</tt>: Allowed values:
cannam@155:   * <dl>
cannam@155:   * <dt>0</dt><dd>Enable phase inversion (default).</dd>
cannam@155:   * <dt>1</dt><dd>Disable phase inversion.</dd>
cannam@155:   * </dl>
cannam@155:   * @hideinitializer */
cannam@155: #define OPUS_SET_PHASE_INVERSION_DISABLED(x) OPUS_SET_PHASE_INVERSION_DISABLED_REQUEST, __opus_check_int(x)
cannam@155: /** Gets the encoder's configured phase inversion status.
cannam@155:   * @see OPUS_SET_PHASE_INVERSION_DISABLED
cannam@155:   * @param[out] x <tt>opus_int32 *</tt>: Returns one of the following values:
cannam@155:   * <dl>
cannam@155:   * <dt>0</dt><dd>Stereo phase inversion enabled (default).</dd>
cannam@155:   * <dt>1</dt><dd>Stereo phase inversion disabled.</dd>
cannam@155:   * </dl>
cannam@155:   * @hideinitializer */
cannam@155: #define OPUS_GET_PHASE_INVERSION_DISABLED(x) OPUS_GET_PHASE_INVERSION_DISABLED_REQUEST, __opus_check_int_ptr(x)
cannam@155: 
cannam@155: /**@}*/
cannam@155: 
cannam@155: /** @defgroup opus_decoderctls Decoder related CTLs
cannam@155:   * @see opus_genericctls, opus_encoderctls, opus_decoder
cannam@155:   * @{
cannam@155:   */
cannam@155: 
cannam@155: /** Configures decoder gain adjustment.
cannam@155:   * Scales the decoded output by a factor specified in Q8 dB units.
cannam@155:   * This has a maximum range of -32768 to 32767 inclusive, and returns
cannam@155:   * OPUS_BAD_ARG otherwise. The default is zero indicating no adjustment.
cannam@155:   * This setting survives decoder reset.
cannam@155:   *
cannam@155:   * gain = pow(10, x/(20.0*256))
cannam@155:   *
cannam@155:   * @param[in] x <tt>opus_int32</tt>:   Amount to scale PCM signal by in Q8 dB units.
cannam@155:   * @hideinitializer */
cannam@155: #define OPUS_SET_GAIN(x) OPUS_SET_GAIN_REQUEST, __opus_check_int(x)
cannam@155: /** Gets the decoder's configured gain adjustment. @see OPUS_SET_GAIN
cannam@155:   *
cannam@155:   * @param[out] x <tt>opus_int32 *</tt>: Amount to scale PCM signal by in Q8 dB units.
cannam@155:   * @hideinitializer */
cannam@155: #define OPUS_GET_GAIN(x) OPUS_GET_GAIN_REQUEST, __opus_check_int_ptr(x)
cannam@155: 
cannam@155: /** Gets the duration (in samples) of the last packet successfully decoded or concealed.
cannam@155:   * @param[out] x <tt>opus_int32 *</tt>: Number of samples (at current sampling rate).
cannam@155:   * @hideinitializer */
cannam@155: #define OPUS_GET_LAST_PACKET_DURATION(x) OPUS_GET_LAST_PACKET_DURATION_REQUEST, __opus_check_int_ptr(x)
cannam@155: 
cannam@155: /** Gets the pitch of the last decoded frame, if available.
cannam@155:   * This can be used for any post-processing algorithm requiring the use of pitch,
cannam@155:   * e.g. time stretching/shortening. If the last frame was not voiced, or if the
cannam@155:   * pitch was not coded in the frame, then zero is returned.
cannam@155:   *
cannam@155:   * This CTL is only implemented for decoder instances.
cannam@155:   *
cannam@155:   * @param[out] x <tt>opus_int32 *</tt>: pitch period at 48 kHz (or 0 if not available)
cannam@155:   *
cannam@155:   * @hideinitializer */
cannam@155: #define OPUS_GET_PITCH(x) OPUS_GET_PITCH_REQUEST, __opus_check_int_ptr(x)
cannam@155: 
cannam@155: /**@}*/
cannam@155: 
cannam@155: /** @defgroup opus_libinfo Opus library information functions
cannam@155:   * @{
cannam@155:   */
cannam@155: 
cannam@155: /** Converts an opus error code into a human readable string.
cannam@155:   *
cannam@155:   * @param[in] error <tt>int</tt>: Error number
cannam@155:   * @returns Error string
cannam@155:   */
cannam@155: OPUS_EXPORT const char *opus_strerror(int error);
cannam@155: 
cannam@155: /** Gets the libopus version string.
cannam@155:   *
cannam@155:   * Applications may look for the substring "-fixed" in the version string to
cannam@155:   * determine whether they have a fixed-point or floating-point build at
cannam@155:   * runtime.
cannam@155:   *
cannam@155:   * @returns Version string
cannam@155:   */
cannam@155: OPUS_EXPORT const char *opus_get_version_string(void);
cannam@155: /**@}*/
cannam@155: 
cannam@155: #ifdef __cplusplus
cannam@155: }
cannam@155: #endif
cannam@155: 
cannam@155: #endif /* OPUS_DEFINES_H */