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1/* Copyright (c) 2010-2011 Xiph.Org Foundation, Skype Limited
2 Written by Jean-Marc Valin and Koen Vos */
3/*
4 Redistribution and use in source and binary forms, with or without
5 modification, are permitted provided that the following conditions
6 are met:
7
8 - Redistributions of source code must retain the above copyright
9 notice, this list of conditions and the following disclaimer.
10
11 - Redistributions in binary form must reproduce the above copyright
12 notice, this list of conditions and the following disclaimer in the
13 documentation and/or other materials provided with the distribution.
14
15 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
18 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
19 OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
20 EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21 PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
22 PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
23 LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
24 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
25 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26*/
27
28/**
29 * @file opus_defines.h
30 * @brief Opus reference implementation constants
31 */
32
33#ifndef OPUS_DEFINES_H
34#define OPUS_DEFINES_H
35
36#include "opus_types.h"
37
38#ifdef __cplusplus
39extern "C" {
40#endif
41
42/** @defgroup opus_errorcodes Error codes
43 * @{
44 */
45/** No error @hideinitializer*/
46#define OPUS_OK 0
47/** One or more invalid/out of range arguments @hideinitializer*/
48#define OPUS_BAD_ARG -1
49/** The mode struct passed is invalid @hideinitializer*/
50#define OPUS_BUFFER_TOO_SMALL -2
51/** An internal error was detected @hideinitializer*/
52#define OPUS_INTERNAL_ERROR -3
53/** The compressed data passed is corrupted @hideinitializer*/
54#define OPUS_INVALID_PACKET -4
55/** Invalid/unsupported request number @hideinitializer*/
56#define OPUS_UNIMPLEMENTED -5
57/** An encoder or decoder structure is invalid or already freed @hideinitializer*/
58#define OPUS_INVALID_STATE -6
59/** Memory allocation has failed @hideinitializer*/
60#define OPUS_ALLOC_FAIL -7
61/**@}*/
62
63/** @cond OPUS_INTERNAL_DOC */
64/**Export control for opus functions */
65
66#if defined(__GNUC__) && defined(OPUS_BUILD)
67# define OPUS_EXPORT __attribute__ ((visibility ("default")))
68#elif defined(WIN32) && !defined(__MINGW32__)
69# ifdef OPUS_BUILD
70# define OPUS_EXPORT __declspec(dllexport)
71# else
72# define OPUS_EXPORT
73# endif
74#else
75# define OPUS_EXPORT
76#endif
77
78# if !defined(OPUS_GNUC_PREREQ)
79# if defined(__GNUC__)&&defined(__GNUC_MINOR__)
80# define OPUS_GNUC_PREREQ(_maj,_min) \
81 ((__GNUC__<<16)+__GNUC_MINOR__>=((_maj)<<16)+(_min))
82# else
83# define OPUS_GNUC_PREREQ(_maj,_min) 0
84# endif
85# endif
86
87#if (!defined(__STDC_VERSION__) || (__STDC_VERSION__ < 199901L) )
88# if OPUS_GNUC_PREREQ(3,0)
89# define OPUS_RESTRICT __restrict__
90# elif (defined(_MSC_VER) && _MSC_VER >= 1400)
91# define OPUS_RESTRICT __restrict
92# else
93# define OPUS_RESTRICT
94# endif
95#else
96# define OPUS_RESTRICT restrict
97#endif
98
99/**Warning attributes for opus functions
100 * NONNULL is not used in OPUS_BUILD to avoid the compiler optimizing out
101 * some paranoid null checks. */
102#if defined(__GNUC__) && OPUS_GNUC_PREREQ(3, 4)
103# define OPUS_WARN_UNUSED_RESULT __attribute__ ((__warn_unused_result__))
104#else
105# define OPUS_WARN_UNUSED_RESULT
106#endif
107#if !defined(OPUS_BUILD) && defined(__GNUC__) && OPUS_GNUC_PREREQ(3, 4)
108# define OPUS_ARG_NONNULL(_x) __attribute__ ((__nonnull__(_x)))
109#else
110# define OPUS_ARG_NONNULL(_x)
111#endif
112
113/** These are the actual Encoder CTL ID numbers.
114 * They should not be used directly by applications.
115 * In general, SETs should be even and GETs should be odd.*/
116#define OPUS_SET_APPLICATION_REQUEST 4000
117#define OPUS_GET_APPLICATION_REQUEST 4001
118#define OPUS_SET_BITRATE_REQUEST 4002
119#define OPUS_GET_BITRATE_REQUEST 4003
120#define OPUS_SET_MAX_BANDWIDTH_REQUEST 4004
121#define OPUS_GET_MAX_BANDWIDTH_REQUEST 4005
122#define OPUS_SET_VBR_REQUEST 4006
123#define OPUS_GET_VBR_REQUEST 4007
124#define OPUS_SET_BANDWIDTH_REQUEST 4008
125#define OPUS_GET_BANDWIDTH_REQUEST 4009
126#define OPUS_SET_COMPLEXITY_REQUEST 4010
127#define OPUS_GET_COMPLEXITY_REQUEST 4011
128#define OPUS_SET_INBAND_FEC_REQUEST 4012
129#define OPUS_GET_INBAND_FEC_REQUEST 4013
130#define OPUS_SET_PACKET_LOSS_PERC_REQUEST 4014
131#define OPUS_GET_PACKET_LOSS_PERC_REQUEST 4015
132#define OPUS_SET_DTX_REQUEST 4016
133#define OPUS_GET_DTX_REQUEST 4017
134#define OPUS_SET_VBR_CONSTRAINT_REQUEST 4020
135#define OPUS_GET_VBR_CONSTRAINT_REQUEST 4021
136#define OPUS_SET_FORCE_CHANNELS_REQUEST 4022
137#define OPUS_GET_FORCE_CHANNELS_REQUEST 4023
138#define OPUS_SET_SIGNAL_REQUEST 4024
139#define OPUS_GET_SIGNAL_REQUEST 4025
140#define OPUS_GET_LOOKAHEAD_REQUEST 4027
141/* #define OPUS_RESET_STATE 4028 */
142#define OPUS_GET_SAMPLE_RATE_REQUEST 4029
143#define OPUS_GET_FINAL_RANGE_REQUEST 4031
144#define OPUS_GET_PITCH_REQUEST 4033
145#define OPUS_SET_GAIN_REQUEST 4034
146#define OPUS_GET_GAIN_REQUEST 4045
147#define OPUS_SET_LSB_DEPTH_REQUEST 4036
148#define OPUS_GET_LSB_DEPTH_REQUEST 4037
149
150/* Macros to trigger compilation errors when the wrong types are provided to a CTL */
151#define __opus_check_int(x) (((void)((x) == (opus_int32)0)), (opus_int32)(x))
152#define __opus_check_int_ptr(ptr) ((ptr) + ((ptr) - (opus_int32*)(ptr)))
153#define __opus_check_uint_ptr(ptr) ((ptr) + ((ptr) - (opus_uint32*)(ptr)))
154/** @endcond */
155
156/** @defgroup opus_ctlvalues Pre-defined values for CTL interface
157 * @see opus_genericctls, opus_encoderctls
158 * @{
159 */
160/* Values for the various encoder CTLs */
161#define OPUS_AUTO -1000 /**<Auto/default setting @hideinitializer*/
162#define OPUS_BITRATE_MAX -1 /**<Maximum bitrate @hideinitializer*/
163
164/** Best for most VoIP/videoconference applications where listening quality and intelligibility matter most
165 * @hideinitializer */
166#define OPUS_APPLICATION_VOIP 2048
167/** Best for broadcast/high-fidelity application where the decoded audio should be as close as possible to the input
168 * @hideinitializer */
169#define OPUS_APPLICATION_AUDIO 2049
170/** Only use when lowest-achievable latency is what matters most. Voice-optimized modes cannot be used.
171 * @hideinitializer */
172#define OPUS_APPLICATION_RESTRICTED_LOWDELAY 2051
173
174#define OPUS_SIGNAL_VOICE 3001 /**< Signal being encoded is voice */
175#define OPUS_SIGNAL_MUSIC 3002 /**< Signal being encoded is music */
176#define OPUS_BANDWIDTH_NARROWBAND 1101 /**< 4 kHz bandpass @hideinitializer*/
177#define OPUS_BANDWIDTH_MEDIUMBAND 1102 /**< 6 kHz bandpass @hideinitializer*/
178#define OPUS_BANDWIDTH_WIDEBAND 1103 /**< 8 kHz bandpass @hideinitializer*/
179#define OPUS_BANDWIDTH_SUPERWIDEBAND 1104 /**<12 kHz bandpass @hideinitializer*/
180#define OPUS_BANDWIDTH_FULLBAND 1105 /**<20 kHz bandpass @hideinitializer*/
181
182/**@}*/
183
184
185/** @defgroup opus_encoderctls Encoder related CTLs
186 *
187 * These are convenience macros for use with the \c opus_encode_ctl
188 * interface. They are used to generate the appropriate series of
189 * arguments for that call, passing the correct type, size and so
190 * on as expected for each particular request.
191 *
192 * Some usage examples:
193 *
194 * @code
195 * int ret;
196 * ret = opus_encoder_ctl(enc_ctx, OPUS_SET_BANDWIDTH(OPUS_AUTO));
197 * if (ret != OPUS_OK) return ret;
198 *
199 * opus_int32 rate;
200 * opus_encoder_ctl(enc_ctx, OPUS_GET_BANDWIDTH(&rate));
201 *
202 * opus_encoder_ctl(enc_ctx, OPUS_RESET_STATE);
203 * @endcode
204 *
205 * @see opus_genericctls, opus_encoder
206 * @{
207 */
208
209/** Configures the encoder's computational complexity.
210 * The supported range is 0-10 inclusive with 10 representing the highest complexity.
211 * @see OPUS_GET_COMPLEXITY
212 * @param[in] x <tt>opus_int32</tt>: Allowed values: 0-10, inclusive.
213 *
214 * @hideinitializer */
215#define OPUS_SET_COMPLEXITY(x) OPUS_SET_COMPLEXITY_REQUEST, __opus_check_int(x)
216/** Gets the encoder's complexity configuration.
217 * @see OPUS_SET_COMPLEXITY
218 * @param[out] x <tt>opus_int32 *</tt>: Returns a value in the range 0-10,
219 * inclusive.
220 * @hideinitializer */
221#define OPUS_GET_COMPLEXITY(x) OPUS_GET_COMPLEXITY_REQUEST, __opus_check_int_ptr(x)
222
223/** Configures the bitrate in the encoder.
224 * Rates from 500 to 512000 bits per second are meaningful, as well as the
225 * special values #OPUS_AUTO and #OPUS_BITRATE_MAX.
226 * The value #OPUS_BITRATE_MAX can be used to cause the codec to use as much
227 * rate as it can, which is useful for controlling the rate by adjusting the
228 * output buffer size.
229 * @see OPUS_GET_BITRATE
230 * @param[in] x <tt>opus_int32</tt>: Bitrate in bits per second. The default
231 * is determined based on the number of
232 * channels and the input sampling rate.
233 * @hideinitializer */
234#define OPUS_SET_BITRATE(x) OPUS_SET_BITRATE_REQUEST, __opus_check_int(x)
235/** Gets the encoder's bitrate configuration.
236 * @see OPUS_SET_BITRATE
237 * @param[out] x <tt>opus_int32 *</tt>: Returns the bitrate in bits per second.
238 * The default is determined based on the
239 * number of channels and the input
240 * sampling rate.
241 * @hideinitializer */
242#define OPUS_GET_BITRATE(x) OPUS_GET_BITRATE_REQUEST, __opus_check_int_ptr(x)
243
244/** Enables or disables variable bitrate (VBR) in the encoder.
245 * The configured bitrate may not be met exactly because frames must
246 * be an integer number of bytes in length.
247 * @warning Only the MDCT mode of Opus can provide hard CBR behavior.
248 * @see OPUS_GET_VBR
249 * @see OPUS_SET_VBR_CONSTRAINT
250 * @param[in] x <tt>opus_int32</tt>: Allowed values:
251 * <dl>
252 * <dt>0</dt><dd>Hard CBR. For LPC/hybrid modes at very low bit-rate, this can
253 * cause noticeable quality degradation.</dd>
254 * <dt>1</dt><dd>VBR (default). The exact type of VBR is controlled by
255 * #OPUS_SET_VBR_CONSTRAINT.</dd>
256 * </dl>
257 * @hideinitializer */
258#define OPUS_SET_VBR(x) OPUS_SET_VBR_REQUEST, __opus_check_int(x)
259/** Determine if variable bitrate (VBR) is enabled in the encoder.
260 * @see OPUS_SET_VBR
261 * @see OPUS_GET_VBR_CONSTRAINT
262 * @param[out] x <tt>opus_int32 *</tt>: Returns one of the following values:
263 * <dl>
264 * <dt>0</dt><dd>Hard CBR.</dd>
265 * <dt>1</dt><dd>VBR (default). The exact type of VBR may be retrieved via
266 * #OPUS_GET_VBR_CONSTRAINT.</dd>
267 * </dl>
268 * @hideinitializer */
269#define OPUS_GET_VBR(x) OPUS_GET_VBR_REQUEST, __opus_check_int_ptr(x)
270
271/** Enables or disables constrained VBR in the encoder.
272 * This setting is ignored when the encoder is in CBR mode.
273 * @warning Only the MDCT mode of Opus currently heeds the constraint.
274 * Speech mode ignores it completely, hybrid mode may fail to obey it
275 * if the LPC layer uses more bitrate than the constraint would have
276 * permitted.
277 * @see OPUS_GET_VBR_CONSTRAINT
278 * @see OPUS_SET_VBR
279 * @param[in] x <tt>opus_int32</tt>: Allowed values:
280 * <dl>
281 * <dt>0</dt><dd>Unconstrained VBR.</dd>
282 * <dt>1</dt><dd>Constrained VBR (default). This creates a maximum of one
283 * frame of buffering delay assuming a transport with a
284 * serialization speed of the nominal bitrate.</dd>
285 * </dl>
286 * @hideinitializer */
287#define OPUS_SET_VBR_CONSTRAINT(x) OPUS_SET_VBR_CONSTRAINT_REQUEST, __opus_check_int(x)
288/** Determine if constrained VBR is enabled in the encoder.
289 * @see OPUS_SET_VBR_CONSTRAINT
290 * @see OPUS_GET_VBR
291 * @param[out] x <tt>opus_int32 *</tt>: Returns one of the following values:
292 * <dl>
293 * <dt>0</dt><dd>Unconstrained VBR.</dd>
294 * <dt>1</dt><dd>Constrained VBR (default).</dd>
295 * </dl>
296 * @hideinitializer */
297#define OPUS_GET_VBR_CONSTRAINT(x) OPUS_GET_VBR_CONSTRAINT_REQUEST, __opus_check_int_ptr(x)
298
299/** Configures mono/stereo forcing in the encoder.
300 * This can force the encoder to produce packets encoded as either mono or
301 * stereo, regardless of the format of the input audio. This is useful when
302 * the caller knows that the input signal is currently a mono source embedded
303 * in a stereo stream.
304 * @see OPUS_GET_FORCE_CHANNELS
305 * @param[in] x <tt>opus_int32</tt>: Allowed values:
306 * <dl>
307 * <dt>#OPUS_AUTO</dt><dd>Not forced (default)</dd>
308 * <dt>1</dt> <dd>Forced mono</dd>
309 * <dt>2</dt> <dd>Forced stereo</dd>
310 * </dl>
311 * @hideinitializer */
312#define OPUS_SET_FORCE_CHANNELS(x) OPUS_SET_FORCE_CHANNELS_REQUEST, __opus_check_int(x)
313/** Gets the encoder's forced channel configuration.
314 * @see OPUS_SET_FORCE_CHANNELS
315 * @param[out] x <tt>opus_int32 *</tt>:
316 * <dl>
317 * <dt>#OPUS_AUTO</dt><dd>Not forced (default)</dd>
318 * <dt>1</dt> <dd>Forced mono</dd>
319 * <dt>2</dt> <dd>Forced stereo</dd>
320 * </dl>
321 * @hideinitializer */
322#define OPUS_GET_FORCE_CHANNELS(x) OPUS_GET_FORCE_CHANNELS_REQUEST, __opus_check_int_ptr(x)
323
324/** Configures the maximum bandpass that the encoder will select automatically.
325 * Applications should normally use this instead of #OPUS_SET_BANDWIDTH
326 * (leaving that set to the default, #OPUS_AUTO). This allows the
327 * application to set an upper bound based on the type of input it is
328 * providing, but still gives the encoder the freedom to reduce the bandpass
329 * when the bitrate becomes too low, for better overall quality.
330 * @see OPUS_GET_MAX_BANDWIDTH
331 * @param[in] x <tt>opus_int32</tt>: Allowed values:
332 * <dl>
333 * <dt>OPUS_BANDWIDTH_NARROWBAND</dt> <dd>4 kHz passband</dd>
334 * <dt>OPUS_BANDWIDTH_MEDIUMBAND</dt> <dd>6 kHz passband</dd>
335 * <dt>OPUS_BANDWIDTH_WIDEBAND</dt> <dd>8 kHz passband</dd>
336 * <dt>OPUS_BANDWIDTH_SUPERWIDEBAND</dt><dd>12 kHz passband</dd>
337 * <dt>OPUS_BANDWIDTH_FULLBAND</dt> <dd>20 kHz passband (default)</dd>
338 * </dl>
339 * @hideinitializer */
340#define OPUS_SET_MAX_BANDWIDTH(x) OPUS_SET_MAX_BANDWIDTH_REQUEST, __opus_check_int(x)
341
342/** Gets the encoder's configured maximum allowed bandpass.
343 * @see OPUS_SET_MAX_BANDWIDTH
344 * @param[out] x <tt>opus_int32 *</tt>: Allowed values:
345 * <dl>
346 * <dt>#OPUS_BANDWIDTH_NARROWBAND</dt> <dd>4 kHz passband</dd>
347 * <dt>#OPUS_BANDWIDTH_MEDIUMBAND</dt> <dd>6 kHz passband</dd>
348 * <dt>#OPUS_BANDWIDTH_WIDEBAND</dt> <dd>8 kHz passband</dd>
349 * <dt>#OPUS_BANDWIDTH_SUPERWIDEBAND</dt><dd>12 kHz passband</dd>
350 * <dt>#OPUS_BANDWIDTH_FULLBAND</dt> <dd>20 kHz passband (default)</dd>
351 * </dl>
352 * @hideinitializer */
353#define OPUS_GET_MAX_BANDWIDTH(x) OPUS_GET_MAX_BANDWIDTH_REQUEST, __opus_check_int_ptr(x)
354
355/** Sets the encoder's bandpass to a specific value.
356 * This prevents the encoder from automatically selecting the bandpass based
357 * on the available bitrate. If an application knows the bandpass of the input
358 * audio it is providing, it should normally use #OPUS_SET_MAX_BANDWIDTH
359 * instead, which still gives the encoder the freedom to reduce the bandpass
360 * when the bitrate becomes too low, for better overall quality.
361 * @see OPUS_GET_BANDWIDTH
362 * @param[in] x <tt>opus_int32</tt>: Allowed values:
363 * <dl>
364 * <dt>#OPUS_AUTO</dt> <dd>(default)</dd>
365 * <dt>#OPUS_BANDWIDTH_NARROWBAND</dt> <dd>4 kHz passband</dd>
366 * <dt>#OPUS_BANDWIDTH_MEDIUMBAND</dt> <dd>6 kHz passband</dd>
367 * <dt>#OPUS_BANDWIDTH_WIDEBAND</dt> <dd>8 kHz passband</dd>
368 * <dt>#OPUS_BANDWIDTH_SUPERWIDEBAND</dt><dd>12 kHz passband</dd>
369 * <dt>#OPUS_BANDWIDTH_FULLBAND</dt> <dd>20 kHz passband</dd>
370 * </dl>
371 * @hideinitializer */
372#define OPUS_SET_BANDWIDTH(x) OPUS_SET_BANDWIDTH_REQUEST, __opus_check_int(x)
373
374/** Configures the type of signal being encoded.
375 * This is a hint which helps the encoder's mode selection.
376 * @see OPUS_GET_SIGNAL
377 * @param[in] x <tt>opus_int32</tt>: Allowed values:
378 * <dl>
379 * <dt>#OPUS_AUTO</dt> <dd>(default)</dd>
380 * <dt>#OPUS_SIGNAL_VOICE</dt><dd>Bias thresholds towards choosing LPC or Hybrid modes.</dd>
381 * <dt>#OPUS_SIGNAL_MUSIC</dt><dd>Bias thresholds towards choosing MDCT modes.</dd>
382 * </dl>
383 * @hideinitializer */
384#define OPUS_SET_SIGNAL(x) OPUS_SET_SIGNAL_REQUEST, __opus_check_int(x)
385/** Gets the encoder's configured signal type.
386 * @see OPUS_SET_SIGNAL
387 * @param[out] x <tt>opus_int32 *</tt>: Returns one of the following values:
388 * <dl>
389 * <dt>#OPUS_AUTO</dt> <dd>(default)</dd>
390 * <dt>#OPUS_SIGNAL_VOICE</dt><dd>Bias thresholds towards choosing LPC or Hybrid modes.</dd>
391 * <dt>#OPUS_SIGNAL_MUSIC</dt><dd>Bias thresholds towards choosing MDCT modes.</dd>
392 * </dl>
393 * @hideinitializer */
394#define OPUS_GET_SIGNAL(x) OPUS_GET_SIGNAL_REQUEST, __opus_check_int_ptr(x)
395
396
397/** Configures the encoder's intended application.
398 * The initial value is a mandatory argument to the encoder_create function.
399 * @see OPUS_GET_APPLICATION
400 * @param[in] x <tt>opus_int32</tt>: Returns one of the following values:
401 * <dl>
402 * <dt>#OPUS_APPLICATION_VOIP</dt>
403 * <dd>Process signal for improved speech intelligibility.</dd>
404 * <dt>#OPUS_APPLICATION_AUDIO</dt>
405 * <dd>Favor faithfulness to the original input.</dd>
406 * <dt>#OPUS_APPLICATION_RESTRICTED_LOWDELAY</dt>
407 * <dd>Configure the minimum possible coding delay by disabling certain modes
408 * of operation.</dd>
409 * </dl>
410 * @hideinitializer */
411#define OPUS_SET_APPLICATION(x) OPUS_SET_APPLICATION_REQUEST, __opus_check_int(x)
412/** Gets the encoder's configured application.
413 * @see OPUS_SET_APPLICATION
414 * @param[out] x <tt>opus_int32 *</tt>: Returns one of the following values:
415 * <dl>
416 * <dt>#OPUS_APPLICATION_VOIP</dt>
417 * <dd>Process signal for improved speech intelligibility.</dd>
418 * <dt>#OPUS_APPLICATION_AUDIO</dt>
419 * <dd>Favor faithfulness to the original input.</dd>
420 * <dt>#OPUS_APPLICATION_RESTRICTED_LOWDELAY</dt>
421 * <dd>Configure the minimum possible coding delay by disabling certain modes
422 * of operation.</dd>
423 * </dl>
424 * @hideinitializer */
425#define OPUS_GET_APPLICATION(x) OPUS_GET_APPLICATION_REQUEST, __opus_check_int_ptr(x)
426
427/** Gets the sampling rate the encoder or decoder was initialized with.
428 * This simply returns the <code>Fs</code> value passed to opus_encoder_init()
429 * or opus_decoder_init().
430 * @param[out] x <tt>opus_int32 *</tt>: Sampling rate of encoder or decoder.
431 * @hideinitializer
432 */
433#define OPUS_GET_SAMPLE_RATE(x) OPUS_GET_SAMPLE_RATE_REQUEST, __opus_check_int_ptr(x)
434
435/** Gets the total samples of delay added by the entire codec.
436 * This can be queried by the encoder and then the provided number of samples can be
437 * skipped on from the start of the decoder's output to provide time aligned input
438 * and output. From the perspective of a decoding application the real data begins this many
439 * samples late.
440 *
441 * The decoder contribution to this delay is identical for all decoders, but the
442 * encoder portion of the delay may vary from implementation to implementation,
443 * version to version, or even depend on the encoder's initial configuration.
444 * Applications needing delay compensation should call this CTL rather than
445 * hard-coding a value.
446 * @param[out] x <tt>opus_int32 *</tt>: Number of lookahead samples
447 * @hideinitializer */
448#define OPUS_GET_LOOKAHEAD(x) OPUS_GET_LOOKAHEAD_REQUEST, __opus_check_int_ptr(x)
449
450/** Configures the encoder's use of inband forward error correction (FEC).
451 * @note This is only applicable to the LPC layer
452 * @see OPUS_GET_INBAND_FEC
453 * @param[in] x <tt>opus_int32</tt>: Allowed values:
454 * <dl>
455 * <dt>0</dt><dd>Disable inband FEC (default).</dd>
456 * <dt>1</dt><dd>Enable inband FEC.</dd>
457 * </dl>
458 * @hideinitializer */
459#define OPUS_SET_INBAND_FEC(x) OPUS_SET_INBAND_FEC_REQUEST, __opus_check_int(x)
460/** Gets encoder's configured use of inband forward error correction.
461 * @see OPUS_SET_INBAND_FEC
462 * @param[out] x <tt>opus_int32 *</tt>: Returns one of the following values:
463 * <dl>
464 * <dt>0</dt><dd>Inband FEC disabled (default).</dd>
465 * <dt>1</dt><dd>Inband FEC enabled.</dd>
466 * </dl>
467 * @hideinitializer */
468#define OPUS_GET_INBAND_FEC(x) OPUS_GET_INBAND_FEC_REQUEST, __opus_check_int_ptr(x)
469
470/** Configures the encoder's expected packet loss percentage.
471 * Higher values with trigger progressively more loss resistant behavior in the encoder
472 * at the expense of quality at a given bitrate in the lossless case, but greater quality
473 * under loss.
474 * @see OPUS_GET_PACKET_LOSS_PERC
475 * @param[in] x <tt>opus_int32</tt>: Loss percentage in the range 0-100, inclusive (default: 0).
476 * @hideinitializer */
477#define OPUS_SET_PACKET_LOSS_PERC(x) OPUS_SET_PACKET_LOSS_PERC_REQUEST, __opus_check_int(x)
478/** Gets the encoder's configured packet loss percentage.
479 * @see OPUS_SET_PACKET_LOSS_PERC
480 * @param[out] x <tt>opus_int32 *</tt>: Returns the configured loss percentage
481 * in the range 0-100, inclusive (default: 0).
482 * @hideinitializer */
483#define OPUS_GET_PACKET_LOSS_PERC(x) OPUS_GET_PACKET_LOSS_PERC_REQUEST, __opus_check_int_ptr(x)
484
485/** Configures the encoder's use of discontinuous transmission (DTX).
486 * @note This is only applicable to the LPC layer
487 * @see OPUS_GET_DTX
488 * @param[in] x <tt>opus_int32</tt>: Allowed values:
489 * <dl>
490 * <dt>0</dt><dd>Disable DTX (default).</dd>
491 * <dt>1</dt><dd>Enabled DTX.</dd>
492 * </dl>
493 * @hideinitializer */
494#define OPUS_SET_DTX(x) OPUS_SET_DTX_REQUEST, __opus_check_int(x)
495/** Gets encoder's configured use of discontinuous transmission.
496 * @see OPUS_SET_DTX
497 * @param[out] x <tt>opus_int32 *</tt>: Returns one of the following values:
498 * <dl>
499 * <dt>0</dt><dd>DTX disabled (default).</dd>
500 * <dt>1</dt><dd>DTX enabled.</dd>
501 * </dl>
502 * @hideinitializer */
503#define OPUS_GET_DTX(x) OPUS_GET_DTX_REQUEST, __opus_check_int_ptr(x)
504/**@}*/
505
506/** @defgroup opus_genericctls Generic CTLs
507 *
508 * These macros are used with the \c opus_decoder_ctl and
509 * \c opus_encoder_ctl calls to generate a particular
510 * request.
511 *
512 * When called on an \c OpusDecoder they apply to that
513 * particular decoder instance. When called on an
514 * \c OpusEncoder they apply to the corresponding setting
515 * on that encoder instance, if present.
516 *
517 * Some usage examples:
518 *
519 * @code
520 * int ret;
521 * opus_int32 pitch;
522 * ret = opus_decoder_ctl(dec_ctx, OPUS_GET_PITCH(&pitch));
523 * if (ret == OPUS_OK) return ret;
524 *
525 * opus_encoder_ctl(enc_ctx, OPUS_RESET_STATE);
526 * opus_decoder_ctl(dec_ctx, OPUS_RESET_STATE);
527 *
528 * opus_int32 enc_bw, dec_bw;
529 * opus_encoder_ctl(enc_ctx, OPUS_GET_BANDWIDTH(&enc_bw));
530 * opus_decoder_ctl(dec_ctx, OPUS_GET_BANDWIDTH(&dec_bw));
531 * if (enc_bw != dec_bw) {
532 * printf("packet bandwidth mismatch!\n");
533 * }
534 * @endcode
535 *
536 * @see opus_encoder, opus_decoder_ctl, opus_encoder_ctl, opus_decoderctls, opus_encoderctls
537 * @{
538 */
539
540/** Resets the codec state to be equivalent to a freshly initialized state.
541 * This should be called when switching streams in order to prevent
542 * the back to back decoding from giving different results from
543 * one at a time decoding.
544 * @hideinitializer */
545#define OPUS_RESET_STATE 4028
546
547/** Gets the final state of the codec's entropy coder.
548 * This is used for testing purposes,
549 * The encoder and decoder state should be identical after coding a payload
550 * (assuming no data corruption or software bugs)
551 *
552 * @param[out] x <tt>opus_uint32 *</tt>: Entropy coder state
553 *
554 * @hideinitializer */
555#define OPUS_GET_FINAL_RANGE(x) OPUS_GET_FINAL_RANGE_REQUEST, __opus_check_uint_ptr(x)
556
557/** Gets the pitch of the last decoded frame, if available.
558 * This can be used for any post-processing algorithm requiring the use of pitch,
559 * e.g. time stretching/shortening. If the last frame was not voiced, or if the
560 * pitch was not coded in the frame, then zero is returned.
561 *
562 * This CTL is only implemented for decoder instances.
563 *
564 * @param[out] x <tt>opus_int32 *</tt>: pitch period at 48 kHz (or 0 if not available)
565 *
566 * @hideinitializer */
567#define OPUS_GET_PITCH(x) OPUS_GET_PITCH_REQUEST, __opus_check_int_ptr(x)
568
569/** Gets the encoder's configured bandpass or the decoder's last bandpass.
570 * @see OPUS_SET_BANDWIDTH
571 * @param[out] x <tt>opus_int32 *</tt>: Returns one of the following values:
572 * <dl>
573 * <dt>#OPUS_AUTO</dt> <dd>(default)</dd>
574 * <dt>#OPUS_BANDWIDTH_NARROWBAND</dt> <dd>4 kHz passband</dd>
575 * <dt>#OPUS_BANDWIDTH_MEDIUMBAND</dt> <dd>6 kHz passband</dd>
576 * <dt>#OPUS_BANDWIDTH_WIDEBAND</dt> <dd>8 kHz passband</dd>
577 * <dt>#OPUS_BANDWIDTH_SUPERWIDEBAND</dt><dd>12 kHz passband</dd>
578 * <dt>#OPUS_BANDWIDTH_FULLBAND</dt> <dd>20 kHz passband</dd>
579 * </dl>
580 * @hideinitializer */
581#define OPUS_GET_BANDWIDTH(x) OPUS_GET_BANDWIDTH_REQUEST, __opus_check_int_ptr(x)
582
583/** Configures the depth of signal being encoded.
584 * This is a hint which helps the encoder identify silence and near-silence.
585 * @see OPUS_GET_LSB_DEPTH
586 * @param[in] x <tt>opus_int32</tt>: Input precision in bits, between 8 and 24
587 * (default: 24).
588 * @hideinitializer */
589#define OPUS_SET_LSB_DEPTH(x) OPUS_SET_LSB_DEPTH_REQUEST, __opus_check_int(x)
590/** Gets the encoder's configured signal depth.
591 * @see OPUS_SET_LSB_DEPTH
592 * @param[out] x <tt>opus_int32 *</tt>: Input precision in bits, between 8 and
593 * 24 (default: 24).
594 * @hideinitializer */
595#define OPUS_GET_LSB_DEPTH(x) OPUS_GET_LSB_DEPTH_REQUEST, __opus_check_int_ptr(x)
596/**@}*/
597
598/** @defgroup opus_decoderctls Decoder related CTLs
599 * @see opus_genericctls, opus_encoderctls, opus_decoder
600 * @{
601 */
602
603/** Configures decoder gain adjustment.
604 * Scales the decoded output by a factor specified in Q8 dB units.
605 * This has a maximum range of -32768 to 32767 inclusive, and returns
606 * OPUS_BAD_ARG otherwise. The default is zero indicating no adjustment.
607 * This setting survives decoder reset.
608 *
609 * gain = pow(10, x/(20.0*256))
610 *
611 * @param[in] x <tt>opus_int32</tt>: Amount to scale PCM signal by in Q8 dB units.
612 * @hideinitializer */
613#define OPUS_SET_GAIN(x) OPUS_SET_GAIN_REQUEST, __opus_check_int(x)
614/** Gets the decoder's configured gain adjustment. @see OPUS_SET_GAIN
615 *
616 * @param[out] x <tt>opus_int32 *</tt>: Amount to scale PCM signal by in Q8 dB units.
617 * @hideinitializer */
618#define OPUS_GET_GAIN(x) OPUS_GET_GAIN_REQUEST, __opus_check_int_ptr(x)
619
620/**@}*/
621
622/** @defgroup opus_libinfo Opus library information functions
623 * @{
624 */
625
626/** Converts an opus error code into a human readable string.
627 *
628 * @param[in] error <tt>int</tt>: Error number
629 * @returns Error string
630 */
631OPUS_EXPORT const char *opus_strerror(int error);
632
633/** Gets the libopus version string.
634 *
635 * @returns Version string
636 */
637OPUS_EXPORT const char *opus_get_version_string(void);
638/**@}*/
639
640#ifdef __cplusplus
641}
642#endif
643
644#endif /* OPUS_DEFINES_H */
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