• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
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
39 extern "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 /** Not enough bytes allocated in the buffer @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 #ifndef OPUS_EXPORT
67 # if defined(WIN32)
68 #  if defined(OPUS_BUILD) && defined(DLL_EXPORT)
69 #   define OPUS_EXPORT __declspec(dllexport)
70 #  else
71 #   define OPUS_EXPORT
72 #  endif
73 # elif defined(__GNUC__) && defined(OPUS_BUILD)
74 #  define OPUS_EXPORT __attribute__ ((visibility ("default")))
75 # else
76 #  define OPUS_EXPORT
77 # endif
78 #endif
79 
80 # if !defined(OPUS_GNUC_PREREQ)
81 #  if defined(__GNUC__)&&defined(__GNUC_MINOR__)
82 #   define OPUS_GNUC_PREREQ(_maj,_min) \
83  ((__GNUC__<<16)+__GNUC_MINOR__>=((_maj)<<16)+(_min))
84 #  else
85 #   define OPUS_GNUC_PREREQ(_maj,_min) 0
86 #  endif
87 # endif
88 
89 #if (!defined(__STDC_VERSION__) || (__STDC_VERSION__ < 199901L) )
90 # if OPUS_GNUC_PREREQ(3,0)
91 #  define OPUS_RESTRICT __restrict__
92 # elif (defined(_MSC_VER) && _MSC_VER >= 1400)
93 #  define OPUS_RESTRICT __restrict
94 # else
95 #  define OPUS_RESTRICT
96 # endif
97 #else
98 # define OPUS_RESTRICT restrict
99 #endif
100 
101 #if (!defined(__STDC_VERSION__) || (__STDC_VERSION__ < 199901L) )
102 # if OPUS_GNUC_PREREQ(2,7)
103 #  define OPUS_INLINE __inline__
104 # elif (defined(_MSC_VER))
105 #  define OPUS_INLINE __inline
106 # else
107 #  define OPUS_INLINE
108 # endif
109 #else
110 # define OPUS_INLINE inline
111 #endif
112 
113 /**Warning attributes for opus functions
114   * NONNULL is not used in OPUS_BUILD to avoid the compiler optimizing out
115   * some paranoid null checks. */
116 #if defined(__GNUC__) && OPUS_GNUC_PREREQ(3, 4)
117 # define OPUS_WARN_UNUSED_RESULT __attribute__ ((__warn_unused_result__))
118 #else
119 # define OPUS_WARN_UNUSED_RESULT
120 #endif
121 #if !defined(OPUS_BUILD) && defined(__GNUC__) && OPUS_GNUC_PREREQ(3, 4)
122 # define OPUS_ARG_NONNULL(_x)  __attribute__ ((__nonnull__(_x)))
123 #else
124 # define OPUS_ARG_NONNULL(_x)
125 #endif
126 
127 /** These are the actual Encoder CTL ID numbers.
128   * They should not be used directly by applications.
129   * In general, SETs should be even and GETs should be odd.*/
130 #define OPUS_SET_APPLICATION_REQUEST         4000
131 #define OPUS_GET_APPLICATION_REQUEST         4001
132 #define OPUS_SET_BITRATE_REQUEST             4002
133 #define OPUS_GET_BITRATE_REQUEST             4003
134 #define OPUS_SET_MAX_BANDWIDTH_REQUEST       4004
135 #define OPUS_GET_MAX_BANDWIDTH_REQUEST       4005
136 #define OPUS_SET_VBR_REQUEST                 4006
137 #define OPUS_GET_VBR_REQUEST                 4007
138 #define OPUS_SET_BANDWIDTH_REQUEST           4008
139 #define OPUS_GET_BANDWIDTH_REQUEST           4009
140 #define OPUS_SET_COMPLEXITY_REQUEST          4010
141 #define OPUS_GET_COMPLEXITY_REQUEST          4011
142 #define OPUS_SET_INBAND_FEC_REQUEST          4012
143 #define OPUS_GET_INBAND_FEC_REQUEST          4013
144 #define OPUS_SET_PACKET_LOSS_PERC_REQUEST    4014
145 #define OPUS_GET_PACKET_LOSS_PERC_REQUEST    4015
146 #define OPUS_SET_DTX_REQUEST                 4016
147 #define OPUS_GET_DTX_REQUEST                 4017
148 #define OPUS_SET_VBR_CONSTRAINT_REQUEST      4020
149 #define OPUS_GET_VBR_CONSTRAINT_REQUEST      4021
150 #define OPUS_SET_FORCE_CHANNELS_REQUEST      4022
151 #define OPUS_GET_FORCE_CHANNELS_REQUEST      4023
152 #define OPUS_SET_SIGNAL_REQUEST              4024
153 #define OPUS_GET_SIGNAL_REQUEST              4025
154 #define OPUS_GET_LOOKAHEAD_REQUEST           4027
155 /* #define OPUS_RESET_STATE 4028 */
156 #define OPUS_GET_SAMPLE_RATE_REQUEST         4029
157 #define OPUS_GET_FINAL_RANGE_REQUEST         4031
158 #define OPUS_GET_PITCH_REQUEST               4033
159 #define OPUS_SET_GAIN_REQUEST                4034
160 #define OPUS_GET_GAIN_REQUEST                4045 /* Should have been 4035 */
161 #define OPUS_SET_LSB_DEPTH_REQUEST           4036
162 #define OPUS_GET_LSB_DEPTH_REQUEST           4037
163 #define OPUS_GET_LAST_PACKET_DURATION_REQUEST 4039
164 #define OPUS_SET_EXPERT_FRAME_DURATION_REQUEST 4040
165 #define OPUS_GET_EXPERT_FRAME_DURATION_REQUEST 4041
166 #define OPUS_SET_PREDICTION_DISABLED_REQUEST 4042
167 #define OPUS_GET_PREDICTION_DISABLED_REQUEST 4043
168 
169 /* Don't use 4045, it's already taken by OPUS_GET_GAIN_REQUEST */
170 
171 /* Macros to trigger compilation errors when the wrong types are provided to a CTL */
172 #define __opus_check_int(x) (((void)((x) == (opus_int32)0)), (opus_int32)(x))
173 #define __opus_check_int_ptr(ptr) ((ptr) + ((ptr) - (opus_int32*)(ptr)))
174 #define __opus_check_uint_ptr(ptr) ((ptr) + ((ptr) - (opus_uint32*)(ptr)))
175 #define __opus_check_val16_ptr(ptr) ((ptr) + ((ptr) - (opus_val16*)(ptr)))
176 /** @endcond */
177 
178 /** @defgroup opus_ctlvalues Pre-defined values for CTL interface
179   * @see opus_genericctls, opus_encoderctls
180   * @{
181   */
182 /* Values for the various encoder CTLs */
183 #define OPUS_AUTO                           -1000 /**<Auto/default setting @hideinitializer*/
184 #define OPUS_BITRATE_MAX                       -1 /**<Maximum bitrate @hideinitializer*/
185 
186 /** Best for most VoIP/videoconference applications where listening quality and intelligibility matter most
187  * @hideinitializer */
188 #define OPUS_APPLICATION_VOIP                2048
189 /** Best for broadcast/high-fidelity application where the decoded audio should be as close as possible to the input
190  * @hideinitializer */
191 #define OPUS_APPLICATION_AUDIO               2049
192 /** Only use when lowest-achievable latency is what matters most. Voice-optimized modes cannot be used.
193  * @hideinitializer */
194 #define OPUS_APPLICATION_RESTRICTED_LOWDELAY 2051
195 
196 #define OPUS_SIGNAL_VOICE                    3001 /**< Signal being encoded is voice */
197 #define OPUS_SIGNAL_MUSIC                    3002 /**< Signal being encoded is music */
198 #define OPUS_BANDWIDTH_NARROWBAND            1101 /**< 4 kHz bandpass @hideinitializer*/
199 #define OPUS_BANDWIDTH_MEDIUMBAND            1102 /**< 6 kHz bandpass @hideinitializer*/
200 #define OPUS_BANDWIDTH_WIDEBAND              1103 /**< 8 kHz bandpass @hideinitializer*/
201 #define OPUS_BANDWIDTH_SUPERWIDEBAND         1104 /**<12 kHz bandpass @hideinitializer*/
202 #define OPUS_BANDWIDTH_FULLBAND              1105 /**<20 kHz bandpass @hideinitializer*/
203 
204 #define OPUS_FRAMESIZE_ARG                   5000 /**< Select frame size from the argument (default) */
205 #define OPUS_FRAMESIZE_2_5_MS                5001 /**< Use 2.5 ms frames */
206 #define OPUS_FRAMESIZE_5_MS                  5002 /**< Use 5 ms frames */
207 #define OPUS_FRAMESIZE_10_MS                 5003 /**< Use 10 ms frames */
208 #define OPUS_FRAMESIZE_20_MS                 5004 /**< Use 20 ms frames */
209 #define OPUS_FRAMESIZE_40_MS                 5005 /**< Use 40 ms frames */
210 #define OPUS_FRAMESIZE_60_MS                 5006 /**< Use 60 ms frames */
211 
212 /**@}*/
213 
214 
215 /** @defgroup opus_encoderctls Encoder related CTLs
216   *
217   * These are convenience macros for use with the \c opus_encode_ctl
218   * interface. They are used to generate the appropriate series of
219   * arguments for that call, passing the correct type, size and so
220   * on as expected for each particular request.
221   *
222   * Some usage examples:
223   *
224   * @code
225   * int ret;
226   * ret = opus_encoder_ctl(enc_ctx, OPUS_SET_BANDWIDTH(OPUS_AUTO));
227   * if (ret != OPUS_OK) return ret;
228   *
229   * opus_int32 rate;
230   * opus_encoder_ctl(enc_ctx, OPUS_GET_BANDWIDTH(&rate));
231   *
232   * opus_encoder_ctl(enc_ctx, OPUS_RESET_STATE);
233   * @endcode
234   *
235   * @see opus_genericctls, opus_encoder
236   * @{
237   */
238 
239 /** Configures the encoder's computational complexity.
240   * The supported range is 0-10 inclusive with 10 representing the highest complexity.
241   * @see OPUS_GET_COMPLEXITY
242   * @param[in] x <tt>opus_int32</tt>: Allowed values: 0-10, inclusive.
243   *
244   * @hideinitializer */
245 #define OPUS_SET_COMPLEXITY(x) OPUS_SET_COMPLEXITY_REQUEST, __opus_check_int(x)
246 /** Gets the encoder's complexity configuration.
247   * @see OPUS_SET_COMPLEXITY
248   * @param[out] x <tt>opus_int32 *</tt>: Returns a value in the range 0-10,
249   *                                      inclusive.
250   * @hideinitializer */
251 #define OPUS_GET_COMPLEXITY(x) OPUS_GET_COMPLEXITY_REQUEST, __opus_check_int_ptr(x)
252 
253 /** Configures the bitrate in the encoder.
254   * Rates from 500 to 512000 bits per second are meaningful, as well as the
255   * special values #OPUS_AUTO and #OPUS_BITRATE_MAX.
256   * The value #OPUS_BITRATE_MAX can be used to cause the codec to use as much
257   * rate as it can, which is useful for controlling the rate by adjusting the
258   * output buffer size.
259   * @see OPUS_GET_BITRATE
260   * @param[in] x <tt>opus_int32</tt>: Bitrate in bits per second. The default
261   *                                   is determined based on the number of
262   *                                   channels and the input sampling rate.
263   * @hideinitializer */
264 #define OPUS_SET_BITRATE(x) OPUS_SET_BITRATE_REQUEST, __opus_check_int(x)
265 /** Gets the encoder's bitrate configuration.
266   * @see OPUS_SET_BITRATE
267   * @param[out] x <tt>opus_int32 *</tt>: Returns the bitrate in bits per second.
268   *                                      The default is determined based on the
269   *                                      number of channels and the input
270   *                                      sampling rate.
271   * @hideinitializer */
272 #define OPUS_GET_BITRATE(x) OPUS_GET_BITRATE_REQUEST, __opus_check_int_ptr(x)
273 
274 /** Enables or disables variable bitrate (VBR) in the encoder.
275   * The configured bitrate may not be met exactly because frames must
276   * be an integer number of bytes in length.
277   * @see OPUS_GET_VBR
278   * @see OPUS_SET_VBR_CONSTRAINT
279   * @param[in] x <tt>opus_int32</tt>: Allowed values:
280   * <dl>
281   * <dt>0</dt><dd>Hard CBR. For LPC/hybrid modes at very low bit-rate, this can
282   *               cause noticeable quality degradation.</dd>
283   * <dt>1</dt><dd>VBR (default). The exact type of VBR is controlled by
284   *               #OPUS_SET_VBR_CONSTRAINT.</dd>
285   * </dl>
286   * @hideinitializer */
287 #define OPUS_SET_VBR(x) OPUS_SET_VBR_REQUEST, __opus_check_int(x)
288 /** Determine if variable bitrate (VBR) is enabled in the encoder.
289   * @see OPUS_SET_VBR
290   * @see OPUS_GET_VBR_CONSTRAINT
291   * @param[out] x <tt>opus_int32 *</tt>: Returns one of the following values:
292   * <dl>
293   * <dt>0</dt><dd>Hard CBR.</dd>
294   * <dt>1</dt><dd>VBR (default). The exact type of VBR may be retrieved via
295   *               #OPUS_GET_VBR_CONSTRAINT.</dd>
296   * </dl>
297   * @hideinitializer */
298 #define OPUS_GET_VBR(x) OPUS_GET_VBR_REQUEST, __opus_check_int_ptr(x)
299 
300 /** Enables or disables constrained VBR in the encoder.
301   * This setting is ignored when the encoder is in CBR mode.
302   * @warning Only the MDCT mode of Opus currently heeds the constraint.
303   *  Speech mode ignores it completely, hybrid mode may fail to obey it
304   *  if the LPC layer uses more bitrate than the constraint would have
305   *  permitted.
306   * @see OPUS_GET_VBR_CONSTRAINT
307   * @see OPUS_SET_VBR
308   * @param[in] x <tt>opus_int32</tt>: Allowed values:
309   * <dl>
310   * <dt>0</dt><dd>Unconstrained VBR.</dd>
311   * <dt>1</dt><dd>Constrained VBR (default). This creates a maximum of one
312   *               frame of buffering delay assuming a transport with a
313   *               serialization speed of the nominal bitrate.</dd>
314   * </dl>
315   * @hideinitializer */
316 #define OPUS_SET_VBR_CONSTRAINT(x) OPUS_SET_VBR_CONSTRAINT_REQUEST, __opus_check_int(x)
317 /** Determine if constrained VBR is enabled in the encoder.
318   * @see OPUS_SET_VBR_CONSTRAINT
319   * @see OPUS_GET_VBR
320   * @param[out] x <tt>opus_int32 *</tt>: Returns one of the following values:
321   * <dl>
322   * <dt>0</dt><dd>Unconstrained VBR.</dd>
323   * <dt>1</dt><dd>Constrained VBR (default).</dd>
324   * </dl>
325   * @hideinitializer */
326 #define OPUS_GET_VBR_CONSTRAINT(x) OPUS_GET_VBR_CONSTRAINT_REQUEST, __opus_check_int_ptr(x)
327 
328 /** Configures mono/stereo forcing in the encoder.
329   * This can force the encoder to produce packets encoded as either mono or
330   * stereo, regardless of the format of the input audio. This is useful when
331   * the caller knows that the input signal is currently a mono source embedded
332   * in a stereo stream.
333   * @see OPUS_GET_FORCE_CHANNELS
334   * @param[in] x <tt>opus_int32</tt>: Allowed values:
335   * <dl>
336   * <dt>#OPUS_AUTO</dt><dd>Not forced (default)</dd>
337   * <dt>1</dt>         <dd>Forced mono</dd>
338   * <dt>2</dt>         <dd>Forced stereo</dd>
339   * </dl>
340   * @hideinitializer */
341 #define OPUS_SET_FORCE_CHANNELS(x) OPUS_SET_FORCE_CHANNELS_REQUEST, __opus_check_int(x)
342 /** Gets the encoder's forced channel configuration.
343   * @see OPUS_SET_FORCE_CHANNELS
344   * @param[out] x <tt>opus_int32 *</tt>:
345   * <dl>
346   * <dt>#OPUS_AUTO</dt><dd>Not forced (default)</dd>
347   * <dt>1</dt>         <dd>Forced mono</dd>
348   * <dt>2</dt>         <dd>Forced stereo</dd>
349   * </dl>
350   * @hideinitializer */
351 #define OPUS_GET_FORCE_CHANNELS(x) OPUS_GET_FORCE_CHANNELS_REQUEST, __opus_check_int_ptr(x)
352 
353 /** Configures the maximum bandpass that the encoder will select automatically.
354   * Applications should normally use this instead of #OPUS_SET_BANDWIDTH
355   * (leaving that set to the default, #OPUS_AUTO). This allows the
356   * application to set an upper bound based on the type of input it is
357   * providing, but still gives the encoder the freedom to reduce the bandpass
358   * when the bitrate becomes too low, for better overall quality.
359   * @see OPUS_GET_MAX_BANDWIDTH
360   * @param[in] x <tt>opus_int32</tt>: Allowed values:
361   * <dl>
362   * <dt>OPUS_BANDWIDTH_NARROWBAND</dt>    <dd>4 kHz passband</dd>
363   * <dt>OPUS_BANDWIDTH_MEDIUMBAND</dt>    <dd>6 kHz passband</dd>
364   * <dt>OPUS_BANDWIDTH_WIDEBAND</dt>      <dd>8 kHz passband</dd>
365   * <dt>OPUS_BANDWIDTH_SUPERWIDEBAND</dt><dd>12 kHz passband</dd>
366   * <dt>OPUS_BANDWIDTH_FULLBAND</dt>     <dd>20 kHz passband (default)</dd>
367   * </dl>
368   * @hideinitializer */
369 #define OPUS_SET_MAX_BANDWIDTH(x) OPUS_SET_MAX_BANDWIDTH_REQUEST, __opus_check_int(x)
370 
371 /** Gets the encoder's configured maximum allowed bandpass.
372   * @see OPUS_SET_MAX_BANDWIDTH
373   * @param[out] x <tt>opus_int32 *</tt>: Allowed values:
374   * <dl>
375   * <dt>#OPUS_BANDWIDTH_NARROWBAND</dt>    <dd>4 kHz passband</dd>
376   * <dt>#OPUS_BANDWIDTH_MEDIUMBAND</dt>    <dd>6 kHz passband</dd>
377   * <dt>#OPUS_BANDWIDTH_WIDEBAND</dt>      <dd>8 kHz passband</dd>
378   * <dt>#OPUS_BANDWIDTH_SUPERWIDEBAND</dt><dd>12 kHz passband</dd>
379   * <dt>#OPUS_BANDWIDTH_FULLBAND</dt>     <dd>20 kHz passband (default)</dd>
380   * </dl>
381   * @hideinitializer */
382 #define OPUS_GET_MAX_BANDWIDTH(x) OPUS_GET_MAX_BANDWIDTH_REQUEST, __opus_check_int_ptr(x)
383 
384 /** Sets the encoder's bandpass to a specific value.
385   * This prevents the encoder from automatically selecting the bandpass based
386   * on the available bitrate. If an application knows the bandpass of the input
387   * audio it is providing, it should normally use #OPUS_SET_MAX_BANDWIDTH
388   * instead, which still gives the encoder the freedom to reduce the bandpass
389   * when the bitrate becomes too low, for better overall quality.
390   * @see OPUS_GET_BANDWIDTH
391   * @param[in] x <tt>opus_int32</tt>: Allowed values:
392   * <dl>
393   * <dt>#OPUS_AUTO</dt>                    <dd>(default)</dd>
394   * <dt>#OPUS_BANDWIDTH_NARROWBAND</dt>    <dd>4 kHz passband</dd>
395   * <dt>#OPUS_BANDWIDTH_MEDIUMBAND</dt>    <dd>6 kHz passband</dd>
396   * <dt>#OPUS_BANDWIDTH_WIDEBAND</dt>      <dd>8 kHz passband</dd>
397   * <dt>#OPUS_BANDWIDTH_SUPERWIDEBAND</dt><dd>12 kHz passband</dd>
398   * <dt>#OPUS_BANDWIDTH_FULLBAND</dt>     <dd>20 kHz passband</dd>
399   * </dl>
400   * @hideinitializer */
401 #define OPUS_SET_BANDWIDTH(x) OPUS_SET_BANDWIDTH_REQUEST, __opus_check_int(x)
402 
403 /** Configures the type of signal being encoded.
404   * This is a hint which helps the encoder's mode selection.
405   * @see OPUS_GET_SIGNAL
406   * @param[in] x <tt>opus_int32</tt>: Allowed values:
407   * <dl>
408   * <dt>#OPUS_AUTO</dt>        <dd>(default)</dd>
409   * <dt>#OPUS_SIGNAL_VOICE</dt><dd>Bias thresholds towards choosing LPC or Hybrid modes.</dd>
410   * <dt>#OPUS_SIGNAL_MUSIC</dt><dd>Bias thresholds towards choosing MDCT modes.</dd>
411   * </dl>
412   * @hideinitializer */
413 #define OPUS_SET_SIGNAL(x) OPUS_SET_SIGNAL_REQUEST, __opus_check_int(x)
414 /** Gets the encoder's configured signal type.
415   * @see OPUS_SET_SIGNAL
416   * @param[out] x <tt>opus_int32 *</tt>: Returns one of the following values:
417   * <dl>
418   * <dt>#OPUS_AUTO</dt>        <dd>(default)</dd>
419   * <dt>#OPUS_SIGNAL_VOICE</dt><dd>Bias thresholds towards choosing LPC or Hybrid modes.</dd>
420   * <dt>#OPUS_SIGNAL_MUSIC</dt><dd>Bias thresholds towards choosing MDCT modes.</dd>
421   * </dl>
422   * @hideinitializer */
423 #define OPUS_GET_SIGNAL(x) OPUS_GET_SIGNAL_REQUEST, __opus_check_int_ptr(x)
424 
425 
426 /** Configures the encoder's intended application.
427   * The initial value is a mandatory argument to the encoder_create function.
428   * @see OPUS_GET_APPLICATION
429   * @param[in] x <tt>opus_int32</tt>: Returns one of the following values:
430   * <dl>
431   * <dt>#OPUS_APPLICATION_VOIP</dt>
432   * <dd>Process signal for improved speech intelligibility.</dd>
433   * <dt>#OPUS_APPLICATION_AUDIO</dt>
434   * <dd>Favor faithfulness to the original input.</dd>
435   * <dt>#OPUS_APPLICATION_RESTRICTED_LOWDELAY</dt>
436   * <dd>Configure the minimum possible coding delay by disabling certain modes
437   * of operation.</dd>
438   * </dl>
439   * @hideinitializer */
440 #define OPUS_SET_APPLICATION(x) OPUS_SET_APPLICATION_REQUEST, __opus_check_int(x)
441 /** Gets the encoder's configured application.
442   * @see OPUS_SET_APPLICATION
443   * @param[out] x <tt>opus_int32 *</tt>: Returns one of the following values:
444   * <dl>
445   * <dt>#OPUS_APPLICATION_VOIP</dt>
446   * <dd>Process signal for improved speech intelligibility.</dd>
447   * <dt>#OPUS_APPLICATION_AUDIO</dt>
448   * <dd>Favor faithfulness to the original input.</dd>
449   * <dt>#OPUS_APPLICATION_RESTRICTED_LOWDELAY</dt>
450   * <dd>Configure the minimum possible coding delay by disabling certain modes
451   * of operation.</dd>
452   * </dl>
453   * @hideinitializer */
454 #define OPUS_GET_APPLICATION(x) OPUS_GET_APPLICATION_REQUEST, __opus_check_int_ptr(x)
455 
456 /** Gets the total samples of delay added by the entire codec.
457   * This can be queried by the encoder and then the provided number of samples can be
458   * skipped on from the start of the decoder's output to provide time aligned input
459   * and output. From the perspective of a decoding application the real data begins this many
460   * samples late.
461   *
462   * The decoder contribution to this delay is identical for all decoders, but the
463   * encoder portion of the delay may vary from implementation to implementation,
464   * version to version, or even depend on the encoder's initial configuration.
465   * Applications needing delay compensation should call this CTL rather than
466   * hard-coding a value.
467   * @param[out] x <tt>opus_int32 *</tt>:   Number of lookahead samples
468   * @hideinitializer */
469 #define OPUS_GET_LOOKAHEAD(x) OPUS_GET_LOOKAHEAD_REQUEST, __opus_check_int_ptr(x)
470 
471 /** Configures the encoder's use of inband forward error correction (FEC).
472   * @note This is only applicable to the LPC layer
473   * @see OPUS_GET_INBAND_FEC
474   * @param[in] x <tt>opus_int32</tt>: Allowed values:
475   * <dl>
476   * <dt>0</dt><dd>Disable inband FEC (default).</dd>
477   * <dt>1</dt><dd>Enable inband FEC.</dd>
478   * </dl>
479   * @hideinitializer */
480 #define OPUS_SET_INBAND_FEC(x) OPUS_SET_INBAND_FEC_REQUEST, __opus_check_int(x)
481 /** Gets encoder's configured use of inband forward error correction.
482   * @see OPUS_SET_INBAND_FEC
483   * @param[out] x <tt>opus_int32 *</tt>: Returns one of the following values:
484   * <dl>
485   * <dt>0</dt><dd>Inband FEC disabled (default).</dd>
486   * <dt>1</dt><dd>Inband FEC enabled.</dd>
487   * </dl>
488   * @hideinitializer */
489 #define OPUS_GET_INBAND_FEC(x) OPUS_GET_INBAND_FEC_REQUEST, __opus_check_int_ptr(x)
490 
491 /** Configures the encoder's expected packet loss percentage.
492   * Higher values trigger progressively more loss resistant behavior in the encoder
493   * at the expense of quality at a given bitrate in the absence of packet loss, but
494   * greater quality under loss.
495   * @see OPUS_GET_PACKET_LOSS_PERC
496   * @param[in] x <tt>opus_int32</tt>:   Loss percentage in the range 0-100, inclusive (default: 0).
497   * @hideinitializer */
498 #define OPUS_SET_PACKET_LOSS_PERC(x) OPUS_SET_PACKET_LOSS_PERC_REQUEST, __opus_check_int(x)
499 /** Gets the encoder's configured packet loss percentage.
500   * @see OPUS_SET_PACKET_LOSS_PERC
501   * @param[out] x <tt>opus_int32 *</tt>: Returns the configured loss percentage
502   *                                      in the range 0-100, inclusive (default: 0).
503   * @hideinitializer */
504 #define OPUS_GET_PACKET_LOSS_PERC(x) OPUS_GET_PACKET_LOSS_PERC_REQUEST, __opus_check_int_ptr(x)
505 
506 /** Configures the encoder's use of discontinuous transmission (DTX).
507   * @note This is only applicable to the LPC layer
508   * @see OPUS_GET_DTX
509   * @param[in] x <tt>opus_int32</tt>: Allowed values:
510   * <dl>
511   * <dt>0</dt><dd>Disable DTX (default).</dd>
512   * <dt>1</dt><dd>Enabled DTX.</dd>
513   * </dl>
514   * @hideinitializer */
515 #define OPUS_SET_DTX(x) OPUS_SET_DTX_REQUEST, __opus_check_int(x)
516 /** Gets encoder's configured use of discontinuous transmission.
517   * @see OPUS_SET_DTX
518   * @param[out] x <tt>opus_int32 *</tt>: Returns one of the following values:
519   * <dl>
520   * <dt>0</dt><dd>DTX disabled (default).</dd>
521   * <dt>1</dt><dd>DTX enabled.</dd>
522   * </dl>
523   * @hideinitializer */
524 #define OPUS_GET_DTX(x) OPUS_GET_DTX_REQUEST, __opus_check_int_ptr(x)
525 /** Configures the depth of signal being encoded.
526   *
527   * This is a hint which helps the encoder identify silence and near-silence.
528   * It represents the number of significant bits of linear intensity below
529   * which the signal contains ignorable quantization or other noise.
530   *
531   * For example, OPUS_SET_LSB_DEPTH(14) would be an appropriate setting
532   * for G.711 u-law input. OPUS_SET_LSB_DEPTH(16) would be appropriate
533   * for 16-bit linear pcm input with opus_encode_float().
534   *
535   * When using opus_encode() instead of opus_encode_float(), or when libopus
536   * is compiled for fixed-point, the encoder uses the minimum of the value
537   * set here and the value 16.
538   *
539   * @see OPUS_GET_LSB_DEPTH
540   * @param[in] x <tt>opus_int32</tt>: Input precision in bits, between 8 and 24
541   *                                   (default: 24).
542   * @hideinitializer */
543 #define OPUS_SET_LSB_DEPTH(x) OPUS_SET_LSB_DEPTH_REQUEST, __opus_check_int(x)
544 /** Gets the encoder's configured signal depth.
545   * @see OPUS_SET_LSB_DEPTH
546   * @param[out] x <tt>opus_int32 *</tt>: Input precision in bits, between 8 and
547   *                                      24 (default: 24).
548   * @hideinitializer */
549 #define OPUS_GET_LSB_DEPTH(x) OPUS_GET_LSB_DEPTH_REQUEST, __opus_check_int_ptr(x)
550 
551 /** Configures the encoder's use of variable duration frames.
552   * When variable duration is enabled, the encoder is free to use a shorter frame
553   * size than the one requested in the opus_encode*() call.
554   * It is then the user's responsibility
555   * to verify how much audio was encoded by checking the ToC byte of the encoded
556   * packet. The part of the audio that was not encoded needs to be resent to the
557   * encoder for the next call. Do not use this option unless you <b>really</b>
558   * know what you are doing.
559   * @see OPUS_GET_EXPERT_FRAME_DURATION
560   * @param[in] x <tt>opus_int32</tt>: Allowed values:
561   * <dl>
562   * <dt>OPUS_FRAMESIZE_ARG</dt><dd>Select frame size from the argument (default).</dd>
563   * <dt>OPUS_FRAMESIZE_2_5_MS</dt><dd>Use 2.5 ms frames.</dd>
564   * <dt>OPUS_FRAMESIZE_5_MS</dt><dd>Use 5 ms frames.</dd>
565   * <dt>OPUS_FRAMESIZE_10_MS</dt><dd>Use 10 ms frames.</dd>
566   * <dt>OPUS_FRAMESIZE_20_MS</dt><dd>Use 20 ms frames.</dd>
567   * <dt>OPUS_FRAMESIZE_40_MS</dt><dd>Use 40 ms frames.</dd>
568   * <dt>OPUS_FRAMESIZE_60_MS</dt><dd>Use 60 ms frames.</dd>
569   * <dt>OPUS_FRAMESIZE_VARIABLE</dt><dd>Optimize the frame size dynamically.</dd>
570   * </dl>
571   * @hideinitializer */
572 #define OPUS_SET_EXPERT_FRAME_DURATION(x) OPUS_SET_EXPERT_FRAME_DURATION_REQUEST, __opus_check_int(x)
573 /** Gets the encoder's configured use of variable duration frames.
574   * @see OPUS_SET_EXPERT_FRAME_DURATION
575   * @param[out] x <tt>opus_int32 *</tt>: Returns one of the following values:
576   * <dl>
577   * <dt>OPUS_FRAMESIZE_ARG</dt><dd>Select frame size from the argument (default).</dd>
578   * <dt>OPUS_FRAMESIZE_2_5_MS</dt><dd>Use 2.5 ms frames.</dd>
579   * <dt>OPUS_FRAMESIZE_5_MS</dt><dd>Use 5 ms frames.</dd>
580   * <dt>OPUS_FRAMESIZE_10_MS</dt><dd>Use 10 ms frames.</dd>
581   * <dt>OPUS_FRAMESIZE_20_MS</dt><dd>Use 20 ms frames.</dd>
582   * <dt>OPUS_FRAMESIZE_40_MS</dt><dd>Use 40 ms frames.</dd>
583   * <dt>OPUS_FRAMESIZE_60_MS</dt><dd>Use 60 ms frames.</dd>
584   * <dt>OPUS_FRAMESIZE_VARIABLE</dt><dd>Optimize the frame size dynamically.</dd>
585   * </dl>
586   * @hideinitializer */
587 #define OPUS_GET_EXPERT_FRAME_DURATION(x) OPUS_GET_EXPERT_FRAME_DURATION_REQUEST, __opus_check_int_ptr(x)
588 
589 /** If set to 1, disables almost all use of prediction, making frames almost
590   * completely independent. This reduces quality.
591   * @see OPUS_GET_PREDICTION_DISABLED
592   * @param[in] x <tt>opus_int32</tt>: Allowed values:
593   * <dl>
594   * <dt>0</dt><dd>Enable prediction (default).</dd>
595   * <dt>1</dt><dd>Disable prediction.</dd>
596   * </dl>
597   * @hideinitializer */
598 #define OPUS_SET_PREDICTION_DISABLED(x) OPUS_SET_PREDICTION_DISABLED_REQUEST, __opus_check_int(x)
599 /** Gets the encoder's configured prediction status.
600   * @see OPUS_SET_PREDICTION_DISABLED
601   * @param[out] x <tt>opus_int32 *</tt>: Returns one of the following values:
602   * <dl>
603   * <dt>0</dt><dd>Prediction enabled (default).</dd>
604   * <dt>1</dt><dd>Prediction disabled.</dd>
605   * </dl>
606   * @hideinitializer */
607 #define OPUS_GET_PREDICTION_DISABLED(x) OPUS_GET_PREDICTION_DISABLED_REQUEST, __opus_check_int_ptr(x)
608 
609 /**@}*/
610 
611 /** @defgroup opus_genericctls Generic CTLs
612   *
613   * These macros are used with the \c opus_decoder_ctl and
614   * \c opus_encoder_ctl calls to generate a particular
615   * request.
616   *
617   * When called on an \c OpusDecoder they apply to that
618   * particular decoder instance. When called on an
619   * \c OpusEncoder they apply to the corresponding setting
620   * on that encoder instance, if present.
621   *
622   * Some usage examples:
623   *
624   * @code
625   * int ret;
626   * opus_int32 pitch;
627   * ret = opus_decoder_ctl(dec_ctx, OPUS_GET_PITCH(&pitch));
628   * if (ret == OPUS_OK) return ret;
629   *
630   * opus_encoder_ctl(enc_ctx, OPUS_RESET_STATE);
631   * opus_decoder_ctl(dec_ctx, OPUS_RESET_STATE);
632   *
633   * opus_int32 enc_bw, dec_bw;
634   * opus_encoder_ctl(enc_ctx, OPUS_GET_BANDWIDTH(&enc_bw));
635   * opus_decoder_ctl(dec_ctx, OPUS_GET_BANDWIDTH(&dec_bw));
636   * if (enc_bw != dec_bw) {
637   *   printf("packet bandwidth mismatch!\n");
638   * }
639   * @endcode
640   *
641   * @see opus_encoder, opus_decoder_ctl, opus_encoder_ctl, opus_decoderctls, opus_encoderctls
642   * @{
643   */
644 
645 /** Resets the codec state to be equivalent to a freshly initialized state.
646   * This should be called when switching streams in order to prevent
647   * the back to back decoding from giving different results from
648   * one at a time decoding.
649   * @hideinitializer */
650 #define OPUS_RESET_STATE 4028
651 
652 /** Gets the final state of the codec's entropy coder.
653   * This is used for testing purposes,
654   * The encoder and decoder state should be identical after coding a payload
655   * (assuming no data corruption or software bugs)
656   *
657   * @param[out] x <tt>opus_uint32 *</tt>: Entropy coder state
658   *
659   * @hideinitializer */
660 #define OPUS_GET_FINAL_RANGE(x) OPUS_GET_FINAL_RANGE_REQUEST, __opus_check_uint_ptr(x)
661 
662 /** Gets the encoder's configured bandpass or the decoder's last bandpass.
663   * @see OPUS_SET_BANDWIDTH
664   * @param[out] x <tt>opus_int32 *</tt>: Returns one of the following values:
665   * <dl>
666   * <dt>#OPUS_AUTO</dt>                    <dd>(default)</dd>
667   * <dt>#OPUS_BANDWIDTH_NARROWBAND</dt>    <dd>4 kHz passband</dd>
668   * <dt>#OPUS_BANDWIDTH_MEDIUMBAND</dt>    <dd>6 kHz passband</dd>
669   * <dt>#OPUS_BANDWIDTH_WIDEBAND</dt>      <dd>8 kHz passband</dd>
670   * <dt>#OPUS_BANDWIDTH_SUPERWIDEBAND</dt><dd>12 kHz passband</dd>
671   * <dt>#OPUS_BANDWIDTH_FULLBAND</dt>     <dd>20 kHz passband</dd>
672   * </dl>
673   * @hideinitializer */
674 #define OPUS_GET_BANDWIDTH(x) OPUS_GET_BANDWIDTH_REQUEST, __opus_check_int_ptr(x)
675 
676 /** Gets the sampling rate the encoder or decoder was initialized with.
677   * This simply returns the <code>Fs</code> value passed to opus_encoder_init()
678   * or opus_decoder_init().
679   * @param[out] x <tt>opus_int32 *</tt>: Sampling rate of encoder or decoder.
680   * @hideinitializer
681   */
682 #define OPUS_GET_SAMPLE_RATE(x) OPUS_GET_SAMPLE_RATE_REQUEST, __opus_check_int_ptr(x)
683 
684 /**@}*/
685 
686 /** @defgroup opus_decoderctls Decoder related CTLs
687   * @see opus_genericctls, opus_encoderctls, opus_decoder
688   * @{
689   */
690 
691 /** Configures decoder gain adjustment.
692   * Scales the decoded output by a factor specified in Q8 dB units.
693   * This has a maximum range of -32768 to 32767 inclusive, and returns
694   * OPUS_BAD_ARG otherwise. The default is zero indicating no adjustment.
695   * This setting survives decoder reset.
696   *
697   * gain = pow(10, x/(20.0*256))
698   *
699   * @param[in] x <tt>opus_int32</tt>:   Amount to scale PCM signal by in Q8 dB units.
700   * @hideinitializer */
701 #define OPUS_SET_GAIN(x) OPUS_SET_GAIN_REQUEST, __opus_check_int(x)
702 /** Gets the decoder's configured gain adjustment. @see OPUS_SET_GAIN
703   *
704   * @param[out] x <tt>opus_int32 *</tt>: Amount to scale PCM signal by in Q8 dB units.
705   * @hideinitializer */
706 #define OPUS_GET_GAIN(x) OPUS_GET_GAIN_REQUEST, __opus_check_int_ptr(x)
707 
708 /** Gets the duration (in samples) of the last packet successfully decoded or concealed.
709   * @param[out] x <tt>opus_int32 *</tt>: Number of samples (at current sampling rate).
710   * @hideinitializer */
711 #define OPUS_GET_LAST_PACKET_DURATION(x) OPUS_GET_LAST_PACKET_DURATION_REQUEST, __opus_check_int_ptr(x)
712 
713 /** Gets the pitch of the last decoded frame, if available.
714   * This can be used for any post-processing algorithm requiring the use of pitch,
715   * e.g. time stretching/shortening. If the last frame was not voiced, or if the
716   * pitch was not coded in the frame, then zero is returned.
717   *
718   * This CTL is only implemented for decoder instances.
719   *
720   * @param[out] x <tt>opus_int32 *</tt>: pitch period at 48 kHz (or 0 if not available)
721   *
722   * @hideinitializer */
723 #define OPUS_GET_PITCH(x) OPUS_GET_PITCH_REQUEST, __opus_check_int_ptr(x)
724 
725 /**@}*/
726 
727 /** @defgroup opus_libinfo Opus library information functions
728   * @{
729   */
730 
731 /** Converts an opus error code into a human readable string.
732   *
733   * @param[in] error <tt>int</tt>: Error number
734   * @returns Error string
735   */
736 OPUS_EXPORT const char *opus_strerror(int error);
737 
738 /** Gets the libopus version string.
739   *
740   * Applications may look for the substring "-fixed" in the version string to
741   * determine whether they have a fixed-point or floating-point build at
742   * runtime.
743   *
744   * @returns Version string
745   */
746 OPUS_EXPORT const char *opus_get_version_string(void);
747 /**@}*/
748 
749 #ifdef __cplusplus
750 }
751 #endif
752 
753 #endif /* OPUS_DEFINES_H */
754