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 /** 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 #ifndef OPUS_EXPORT 67 # if defined(__GNUC__) && defined(OPUS_BUILD) 68 # define OPUS_EXPORT __attribute__ ((visibility ("default"))) 69 # elif defined(WIN32) && !defined(__MINGW32__) 70 # ifdef OPUS_BUILD 71 # define OPUS_EXPORT __declspec(dllexport) 72 # else 73 # define OPUS_EXPORT 74 # endif 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 /**Warning attributes for opus functions 102 * NONNULL is not used in OPUS_BUILD to avoid the compiler optimizing out 103 * some paranoid null checks. */ 104 #if defined(__GNUC__) && OPUS_GNUC_PREREQ(3, 4) 105 # define OPUS_WARN_UNUSED_RESULT __attribute__ ((__warn_unused_result__)) 106 #else 107 # define OPUS_WARN_UNUSED_RESULT 108 #endif 109 #if !defined(OPUS_BUILD) && defined(__GNUC__) && OPUS_GNUC_PREREQ(3, 4) 110 # define OPUS_ARG_NONNULL(_x) __attribute__ ((__nonnull__(_x))) 111 #else 112 # define OPUS_ARG_NONNULL(_x) 113 #endif 114 115 /** These are the actual Encoder CTL ID numbers. 116 * They should not be used directly by applications. 117 * In general, SETs should be even and GETs should be odd.*/ 118 #define OPUS_SET_APPLICATION_REQUEST 4000 119 #define OPUS_GET_APPLICATION_REQUEST 4001 120 #define OPUS_SET_BITRATE_REQUEST 4002 121 #define OPUS_GET_BITRATE_REQUEST 4003 122 #define OPUS_SET_MAX_BANDWIDTH_REQUEST 4004 123 #define OPUS_GET_MAX_BANDWIDTH_REQUEST 4005 124 #define OPUS_SET_VBR_REQUEST 4006 125 #define OPUS_GET_VBR_REQUEST 4007 126 #define OPUS_SET_BANDWIDTH_REQUEST 4008 127 #define OPUS_GET_BANDWIDTH_REQUEST 4009 128 #define OPUS_SET_COMPLEXITY_REQUEST 4010 129 #define OPUS_GET_COMPLEXITY_REQUEST 4011 130 #define OPUS_SET_INBAND_FEC_REQUEST 4012 131 #define OPUS_GET_INBAND_FEC_REQUEST 4013 132 #define OPUS_SET_PACKET_LOSS_PERC_REQUEST 4014 133 #define OPUS_GET_PACKET_LOSS_PERC_REQUEST 4015 134 #define OPUS_SET_DTX_REQUEST 4016 135 #define OPUS_GET_DTX_REQUEST 4017 136 #define OPUS_SET_VBR_CONSTRAINT_REQUEST 4020 137 #define OPUS_GET_VBR_CONSTRAINT_REQUEST 4021 138 #define OPUS_SET_FORCE_CHANNELS_REQUEST 4022 139 #define OPUS_GET_FORCE_CHANNELS_REQUEST 4023 140 #define OPUS_SET_SIGNAL_REQUEST 4024 141 #define OPUS_GET_SIGNAL_REQUEST 4025 142 #define OPUS_GET_LOOKAHEAD_REQUEST 4027 143 /* #define OPUS_RESET_STATE 4028 */ 144 #define OPUS_GET_SAMPLE_RATE_REQUEST 4029 145 #define OPUS_GET_FINAL_RANGE_REQUEST 4031 146 #define OPUS_GET_PITCH_REQUEST 4033 147 #define OPUS_SET_GAIN_REQUEST 4034 148 #define OPUS_GET_GAIN_REQUEST 4045 /* Should have been 4035 */ 149 #define OPUS_SET_LSB_DEPTH_REQUEST 4036 150 #define OPUS_GET_LSB_DEPTH_REQUEST 4037 151 152 #define OPUS_GET_LAST_PACKET_DURATION_REQUEST 4039 153 154 /* Don't use 4045, it's already taken by OPUS_GET_GAIN_REQUEST */ 155 156 /* Macros to trigger compilation errors when the wrong types are provided to a CTL */ 157 #define __opus_check_int(x) (((void)((x) == (opus_int32)0)), (opus_int32)(x)) 158 #define __opus_check_int_ptr(ptr) ((ptr) + ((ptr) - (opus_int32*)(ptr))) 159 #define __opus_check_uint_ptr(ptr) ((ptr) + ((ptr) - (opus_uint32*)(ptr))) 160 /** @endcond */ 161 162 /** @defgroup opus_ctlvalues Pre-defined values for CTL interface 163 * @see opus_genericctls, opus_encoderctls 164 * @{ 165 */ 166 /* Values for the various encoder CTLs */ 167 #define OPUS_AUTO -1000 /**<Auto/default setting @hideinitializer*/ 168 #define OPUS_BITRATE_MAX -1 /**<Maximum bitrate @hideinitializer*/ 169 170 /** Best for most VoIP/videoconference applications where listening quality and intelligibility matter most 171 * @hideinitializer */ 172 #define OPUS_APPLICATION_VOIP 2048 173 /** Best for broadcast/high-fidelity application where the decoded audio should be as close as possible to the input 174 * @hideinitializer */ 175 #define OPUS_APPLICATION_AUDIO 2049 176 /** Only use when lowest-achievable latency is what matters most. Voice-optimized modes cannot be used. 177 * @hideinitializer */ 178 #define OPUS_APPLICATION_RESTRICTED_LOWDELAY 2051 179 180 #define OPUS_SIGNAL_VOICE 3001 /**< Signal being encoded is voice */ 181 #define OPUS_SIGNAL_MUSIC 3002 /**< Signal being encoded is music */ 182 #define OPUS_BANDWIDTH_NARROWBAND 1101 /**< 4 kHz bandpass @hideinitializer*/ 183 #define OPUS_BANDWIDTH_MEDIUMBAND 1102 /**< 6 kHz bandpass @hideinitializer*/ 184 #define OPUS_BANDWIDTH_WIDEBAND 1103 /**< 8 kHz bandpass @hideinitializer*/ 185 #define OPUS_BANDWIDTH_SUPERWIDEBAND 1104 /**<12 kHz bandpass @hideinitializer*/ 186 #define OPUS_BANDWIDTH_FULLBAND 1105 /**<20 kHz bandpass @hideinitializer*/ 187 188 /**@}*/ 189 190 191 /** @defgroup opus_encoderctls Encoder related CTLs 192 * 193 * These are convenience macros for use with the \c opus_encode_ctl 194 * interface. They are used to generate the appropriate series of 195 * arguments for that call, passing the correct type, size and so 196 * on as expected for each particular request. 197 * 198 * Some usage examples: 199 * 200 * @code 201 * int ret; 202 * ret = opus_encoder_ctl(enc_ctx, OPUS_SET_BANDWIDTH(OPUS_AUTO)); 203 * if (ret != OPUS_OK) return ret; 204 * 205 * opus_int32 rate; 206 * opus_encoder_ctl(enc_ctx, OPUS_GET_BANDWIDTH(&rate)); 207 * 208 * opus_encoder_ctl(enc_ctx, OPUS_RESET_STATE); 209 * @endcode 210 * 211 * @see opus_genericctls, opus_encoder 212 * @{ 213 */ 214 215 /** Configures the encoder's computational complexity. 216 * The supported range is 0-10 inclusive with 10 representing the highest complexity. 217 * @see OPUS_GET_COMPLEXITY 218 * @param[in] x <tt>opus_int32</tt>: Allowed values: 0-10, inclusive. 219 * 220 * @hideinitializer */ 221 #define OPUS_SET_COMPLEXITY(x) OPUS_SET_COMPLEXITY_REQUEST, __opus_check_int(x) 222 /** Gets the encoder's complexity configuration. 223 * @see OPUS_SET_COMPLEXITY 224 * @param[out] x <tt>opus_int32 *</tt>: Returns a value in the range 0-10, 225 * inclusive. 226 * @hideinitializer */ 227 #define OPUS_GET_COMPLEXITY(x) OPUS_GET_COMPLEXITY_REQUEST, __opus_check_int_ptr(x) 228 229 /** Configures the bitrate in the encoder. 230 * Rates from 500 to 512000 bits per second are meaningful, as well as the 231 * special values #OPUS_AUTO and #OPUS_BITRATE_MAX. 232 * The value #OPUS_BITRATE_MAX can be used to cause the codec to use as much 233 * rate as it can, which is useful for controlling the rate by adjusting the 234 * output buffer size. 235 * @see OPUS_GET_BITRATE 236 * @param[in] x <tt>opus_int32</tt>: Bitrate in bits per second. The default 237 * is determined based on the number of 238 * channels and the input sampling rate. 239 * @hideinitializer */ 240 #define OPUS_SET_BITRATE(x) OPUS_SET_BITRATE_REQUEST, __opus_check_int(x) 241 /** Gets the encoder's bitrate configuration. 242 * @see OPUS_SET_BITRATE 243 * @param[out] x <tt>opus_int32 *</tt>: Returns the bitrate in bits per second. 244 * The default is determined based on the 245 * number of channels and the input 246 * sampling rate. 247 * @hideinitializer */ 248 #define OPUS_GET_BITRATE(x) OPUS_GET_BITRATE_REQUEST, __opus_check_int_ptr(x) 249 250 /** Enables or disables variable bitrate (VBR) in the encoder. 251 * The configured bitrate may not be met exactly because frames must 252 * be an integer number of bytes in length. 253 * @warning Only the MDCT mode of Opus can provide hard CBR behavior. 254 * @see OPUS_GET_VBR 255 * @see OPUS_SET_VBR_CONSTRAINT 256 * @param[in] x <tt>opus_int32</tt>: Allowed values: 257 * <dl> 258 * <dt>0</dt><dd>Hard CBR. For LPC/hybrid modes at very low bit-rate, this can 259 * cause noticeable quality degradation.</dd> 260 * <dt>1</dt><dd>VBR (default). The exact type of VBR is controlled by 261 * #OPUS_SET_VBR_CONSTRAINT.</dd> 262 * </dl> 263 * @hideinitializer */ 264 #define OPUS_SET_VBR(x) OPUS_SET_VBR_REQUEST, __opus_check_int(x) 265 /** Determine if variable bitrate (VBR) is enabled in the encoder. 266 * @see OPUS_SET_VBR 267 * @see OPUS_GET_VBR_CONSTRAINT 268 * @param[out] x <tt>opus_int32 *</tt>: Returns one of the following values: 269 * <dl> 270 * <dt>0</dt><dd>Hard CBR.</dd> 271 * <dt>1</dt><dd>VBR (default). The exact type of VBR may be retrieved via 272 * #OPUS_GET_VBR_CONSTRAINT.</dd> 273 * </dl> 274 * @hideinitializer */ 275 #define OPUS_GET_VBR(x) OPUS_GET_VBR_REQUEST, __opus_check_int_ptr(x) 276 277 /** Enables or disables constrained VBR in the encoder. 278 * This setting is ignored when the encoder is in CBR mode. 279 * @warning Only the MDCT mode of Opus currently heeds the constraint. 280 * Speech mode ignores it completely, hybrid mode may fail to obey it 281 * if the LPC layer uses more bitrate than the constraint would have 282 * permitted. 283 * @see OPUS_GET_VBR_CONSTRAINT 284 * @see OPUS_SET_VBR 285 * @param[in] x <tt>opus_int32</tt>: Allowed values: 286 * <dl> 287 * <dt>0</dt><dd>Unconstrained VBR.</dd> 288 * <dt>1</dt><dd>Constrained VBR (default). This creates a maximum of one 289 * frame of buffering delay assuming a transport with a 290 * serialization speed of the nominal bitrate.</dd> 291 * </dl> 292 * @hideinitializer */ 293 #define OPUS_SET_VBR_CONSTRAINT(x) OPUS_SET_VBR_CONSTRAINT_REQUEST, __opus_check_int(x) 294 /** Determine if constrained VBR is enabled in the encoder. 295 * @see OPUS_SET_VBR_CONSTRAINT 296 * @see OPUS_GET_VBR 297 * @param[out] x <tt>opus_int32 *</tt>: Returns one of the following values: 298 * <dl> 299 * <dt>0</dt><dd>Unconstrained VBR.</dd> 300 * <dt>1</dt><dd>Constrained VBR (default).</dd> 301 * </dl> 302 * @hideinitializer */ 303 #define OPUS_GET_VBR_CONSTRAINT(x) OPUS_GET_VBR_CONSTRAINT_REQUEST, __opus_check_int_ptr(x) 304 305 /** Configures mono/stereo forcing in the encoder. 306 * This can force the encoder to produce packets encoded as either mono or 307 * stereo, regardless of the format of the input audio. This is useful when 308 * the caller knows that the input signal is currently a mono source embedded 309 * in a stereo stream. 310 * @see OPUS_GET_FORCE_CHANNELS 311 * @param[in] x <tt>opus_int32</tt>: Allowed values: 312 * <dl> 313 * <dt>#OPUS_AUTO</dt><dd>Not forced (default)</dd> 314 * <dt>1</dt> <dd>Forced mono</dd> 315 * <dt>2</dt> <dd>Forced stereo</dd> 316 * </dl> 317 * @hideinitializer */ 318 #define OPUS_SET_FORCE_CHANNELS(x) OPUS_SET_FORCE_CHANNELS_REQUEST, __opus_check_int(x) 319 /** Gets the encoder's forced channel configuration. 320 * @see OPUS_SET_FORCE_CHANNELS 321 * @param[out] x <tt>opus_int32 *</tt>: 322 * <dl> 323 * <dt>#OPUS_AUTO</dt><dd>Not forced (default)</dd> 324 * <dt>1</dt> <dd>Forced mono</dd> 325 * <dt>2</dt> <dd>Forced stereo</dd> 326 * </dl> 327 * @hideinitializer */ 328 #define OPUS_GET_FORCE_CHANNELS(x) OPUS_GET_FORCE_CHANNELS_REQUEST, __opus_check_int_ptr(x) 329 330 /** Configures the maximum bandpass that the encoder will select automatically. 331 * Applications should normally use this instead of #OPUS_SET_BANDWIDTH 332 * (leaving that set to the default, #OPUS_AUTO). This allows the 333 * application to set an upper bound based on the type of input it is 334 * providing, but still gives the encoder the freedom to reduce the bandpass 335 * when the bitrate becomes too low, for better overall quality. 336 * @see OPUS_GET_MAX_BANDWIDTH 337 * @param[in] x <tt>opus_int32</tt>: Allowed values: 338 * <dl> 339 * <dt>OPUS_BANDWIDTH_NARROWBAND</dt> <dd>4 kHz passband</dd> 340 * <dt>OPUS_BANDWIDTH_MEDIUMBAND</dt> <dd>6 kHz passband</dd> 341 * <dt>OPUS_BANDWIDTH_WIDEBAND</dt> <dd>8 kHz passband</dd> 342 * <dt>OPUS_BANDWIDTH_SUPERWIDEBAND</dt><dd>12 kHz passband</dd> 343 * <dt>OPUS_BANDWIDTH_FULLBAND</dt> <dd>20 kHz passband (default)</dd> 344 * </dl> 345 * @hideinitializer */ 346 #define OPUS_SET_MAX_BANDWIDTH(x) OPUS_SET_MAX_BANDWIDTH_REQUEST, __opus_check_int(x) 347 348 /** Gets the encoder's configured maximum allowed bandpass. 349 * @see OPUS_SET_MAX_BANDWIDTH 350 * @param[out] x <tt>opus_int32 *</tt>: Allowed values: 351 * <dl> 352 * <dt>#OPUS_BANDWIDTH_NARROWBAND</dt> <dd>4 kHz passband</dd> 353 * <dt>#OPUS_BANDWIDTH_MEDIUMBAND</dt> <dd>6 kHz passband</dd> 354 * <dt>#OPUS_BANDWIDTH_WIDEBAND</dt> <dd>8 kHz passband</dd> 355 * <dt>#OPUS_BANDWIDTH_SUPERWIDEBAND</dt><dd>12 kHz passband</dd> 356 * <dt>#OPUS_BANDWIDTH_FULLBAND</dt> <dd>20 kHz passband (default)</dd> 357 * </dl> 358 * @hideinitializer */ 359 #define OPUS_GET_MAX_BANDWIDTH(x) OPUS_GET_MAX_BANDWIDTH_REQUEST, __opus_check_int_ptr(x) 360 361 /** Sets the encoder's bandpass to a specific value. 362 * This prevents the encoder from automatically selecting the bandpass based 363 * on the available bitrate. If an application knows the bandpass of the input 364 * audio it is providing, it should normally use #OPUS_SET_MAX_BANDWIDTH 365 * instead, which still gives the encoder the freedom to reduce the bandpass 366 * when the bitrate becomes too low, for better overall quality. 367 * @see OPUS_GET_BANDWIDTH 368 * @param[in] x <tt>opus_int32</tt>: Allowed values: 369 * <dl> 370 * <dt>#OPUS_AUTO</dt> <dd>(default)</dd> 371 * <dt>#OPUS_BANDWIDTH_NARROWBAND</dt> <dd>4 kHz passband</dd> 372 * <dt>#OPUS_BANDWIDTH_MEDIUMBAND</dt> <dd>6 kHz passband</dd> 373 * <dt>#OPUS_BANDWIDTH_WIDEBAND</dt> <dd>8 kHz passband</dd> 374 * <dt>#OPUS_BANDWIDTH_SUPERWIDEBAND</dt><dd>12 kHz passband</dd> 375 * <dt>#OPUS_BANDWIDTH_FULLBAND</dt> <dd>20 kHz passband</dd> 376 * </dl> 377 * @hideinitializer */ 378 #define OPUS_SET_BANDWIDTH(x) OPUS_SET_BANDWIDTH_REQUEST, __opus_check_int(x) 379 380 /** Configures the type of signal being encoded. 381 * This is a hint which helps the encoder's mode selection. 382 * @see OPUS_GET_SIGNAL 383 * @param[in] x <tt>opus_int32</tt>: Allowed values: 384 * <dl> 385 * <dt>#OPUS_AUTO</dt> <dd>(default)</dd> 386 * <dt>#OPUS_SIGNAL_VOICE</dt><dd>Bias thresholds towards choosing LPC or Hybrid modes.</dd> 387 * <dt>#OPUS_SIGNAL_MUSIC</dt><dd>Bias thresholds towards choosing MDCT modes.</dd> 388 * </dl> 389 * @hideinitializer */ 390 #define OPUS_SET_SIGNAL(x) OPUS_SET_SIGNAL_REQUEST, __opus_check_int(x) 391 /** Gets the encoder's configured signal type. 392 * @see OPUS_SET_SIGNAL 393 * @param[out] x <tt>opus_int32 *</tt>: Returns one of the following values: 394 * <dl> 395 * <dt>#OPUS_AUTO</dt> <dd>(default)</dd> 396 * <dt>#OPUS_SIGNAL_VOICE</dt><dd>Bias thresholds towards choosing LPC or Hybrid modes.</dd> 397 * <dt>#OPUS_SIGNAL_MUSIC</dt><dd>Bias thresholds towards choosing MDCT modes.</dd> 398 * </dl> 399 * @hideinitializer */ 400 #define OPUS_GET_SIGNAL(x) OPUS_GET_SIGNAL_REQUEST, __opus_check_int_ptr(x) 401 402 403 /** Configures the encoder's intended application. 404 * The initial value is a mandatory argument to the encoder_create function. 405 * @see OPUS_GET_APPLICATION 406 * @param[in] x <tt>opus_int32</tt>: Returns one of the following values: 407 * <dl> 408 * <dt>#OPUS_APPLICATION_VOIP</dt> 409 * <dd>Process signal for improved speech intelligibility.</dd> 410 * <dt>#OPUS_APPLICATION_AUDIO</dt> 411 * <dd>Favor faithfulness to the original input.</dd> 412 * <dt>#OPUS_APPLICATION_RESTRICTED_LOWDELAY</dt> 413 * <dd>Configure the minimum possible coding delay by disabling certain modes 414 * of operation.</dd> 415 * </dl> 416 * @hideinitializer */ 417 #define OPUS_SET_APPLICATION(x) OPUS_SET_APPLICATION_REQUEST, __opus_check_int(x) 418 /** Gets the encoder's configured application. 419 * @see OPUS_SET_APPLICATION 420 * @param[out] x <tt>opus_int32 *</tt>: Returns one of the following values: 421 * <dl> 422 * <dt>#OPUS_APPLICATION_VOIP</dt> 423 * <dd>Process signal for improved speech intelligibility.</dd> 424 * <dt>#OPUS_APPLICATION_AUDIO</dt> 425 * <dd>Favor faithfulness to the original input.</dd> 426 * <dt>#OPUS_APPLICATION_RESTRICTED_LOWDELAY</dt> 427 * <dd>Configure the minimum possible coding delay by disabling certain modes 428 * of operation.</dd> 429 * </dl> 430 * @hideinitializer */ 431 #define OPUS_GET_APPLICATION(x) OPUS_GET_APPLICATION_REQUEST, __opus_check_int_ptr(x) 432 433 /** Gets the sampling rate the encoder or decoder was initialized with. 434 * This simply returns the <code>Fs</code> value passed to opus_encoder_init() 435 * or opus_decoder_init(). 436 * @param[out] x <tt>opus_int32 *</tt>: Sampling rate of encoder or decoder. 437 * @hideinitializer 438 */ 439 #define OPUS_GET_SAMPLE_RATE(x) OPUS_GET_SAMPLE_RATE_REQUEST, __opus_check_int_ptr(x) 440 441 /** Gets the total samples of delay added by the entire codec. 442 * This can be queried by the encoder and then the provided number of samples can be 443 * skipped on from the start of the decoder's output to provide time aligned input 444 * and output. From the perspective of a decoding application the real data begins this many 445 * samples late. 446 * 447 * The decoder contribution to this delay is identical for all decoders, but the 448 * encoder portion of the delay may vary from implementation to implementation, 449 * version to version, or even depend on the encoder's initial configuration. 450 * Applications needing delay compensation should call this CTL rather than 451 * hard-coding a value. 452 * @param[out] x <tt>opus_int32 *</tt>: Number of lookahead samples 453 * @hideinitializer */ 454 #define OPUS_GET_LOOKAHEAD(x) OPUS_GET_LOOKAHEAD_REQUEST, __opus_check_int_ptr(x) 455 456 /** Configures the encoder's use of inband forward error correction (FEC). 457 * @note This is only applicable to the LPC layer 458 * @see OPUS_GET_INBAND_FEC 459 * @param[in] x <tt>opus_int32</tt>: Allowed values: 460 * <dl> 461 * <dt>0</dt><dd>Disable inband FEC (default).</dd> 462 * <dt>1</dt><dd>Enable inband FEC.</dd> 463 * </dl> 464 * @hideinitializer */ 465 #define OPUS_SET_INBAND_FEC(x) OPUS_SET_INBAND_FEC_REQUEST, __opus_check_int(x) 466 /** Gets encoder's configured use of inband forward error correction. 467 * @see OPUS_SET_INBAND_FEC 468 * @param[out] x <tt>opus_int32 *</tt>: Returns one of the following values: 469 * <dl> 470 * <dt>0</dt><dd>Inband FEC disabled (default).</dd> 471 * <dt>1</dt><dd>Inband FEC enabled.</dd> 472 * </dl> 473 * @hideinitializer */ 474 #define OPUS_GET_INBAND_FEC(x) OPUS_GET_INBAND_FEC_REQUEST, __opus_check_int_ptr(x) 475 476 /** Configures the encoder's expected packet loss percentage. 477 * Higher values with trigger progressively more loss resistant behavior in the encoder 478 * at the expense of quality at a given bitrate in the lossless case, but greater quality 479 * under loss. 480 * @see OPUS_GET_PACKET_LOSS_PERC 481 * @param[in] x <tt>opus_int32</tt>: Loss percentage in the range 0-100, inclusive (default: 0). 482 * @hideinitializer */ 483 #define OPUS_SET_PACKET_LOSS_PERC(x) OPUS_SET_PACKET_LOSS_PERC_REQUEST, __opus_check_int(x) 484 /** Gets the encoder's configured packet loss percentage. 485 * @see OPUS_SET_PACKET_LOSS_PERC 486 * @param[out] x <tt>opus_int32 *</tt>: Returns the configured loss percentage 487 * in the range 0-100, inclusive (default: 0). 488 * @hideinitializer */ 489 #define OPUS_GET_PACKET_LOSS_PERC(x) OPUS_GET_PACKET_LOSS_PERC_REQUEST, __opus_check_int_ptr(x) 490 491 /** Configures the encoder's use of discontinuous transmission (DTX). 492 * @note This is only applicable to the LPC layer 493 * @see OPUS_GET_DTX 494 * @param[in] x <tt>opus_int32</tt>: Allowed values: 495 * <dl> 496 * <dt>0</dt><dd>Disable DTX (default).</dd> 497 * <dt>1</dt><dd>Enabled DTX.</dd> 498 * </dl> 499 * @hideinitializer */ 500 #define OPUS_SET_DTX(x) OPUS_SET_DTX_REQUEST, __opus_check_int(x) 501 /** Gets encoder's configured use of discontinuous transmission. 502 * @see OPUS_SET_DTX 503 * @param[out] x <tt>opus_int32 *</tt>: Returns one of the following values: 504 * <dl> 505 * <dt>0</dt><dd>DTX disabled (default).</dd> 506 * <dt>1</dt><dd>DTX enabled.</dd> 507 * </dl> 508 * @hideinitializer */ 509 #define OPUS_GET_DTX(x) OPUS_GET_DTX_REQUEST, __opus_check_int_ptr(x) 510 /** Configures the depth of signal being encoded. 511 * This is a hint which helps the encoder identify silence and near-silence. 512 * @see OPUS_GET_LSB_DEPTH 513 * @param[in] x <tt>opus_int32</tt>: Input precision in bits, between 8 and 24 514 * (default: 24). 515 * @hideinitializer */ 516 #define OPUS_SET_LSB_DEPTH(x) OPUS_SET_LSB_DEPTH_REQUEST, __opus_check_int(x) 517 /** Gets the encoder's configured signal depth. 518 * @see OPUS_SET_LSB_DEPTH 519 * @param[out] x <tt>opus_int32 *</tt>: Input precision in bits, between 8 and 520 * 24 (default: 24). 521 * @hideinitializer */ 522 #define OPUS_GET_LSB_DEPTH(x) OPUS_GET_LSB_DEPTH_REQUEST, __opus_check_int_ptr(x) 523 524 /** Gets the duration (in samples) of the last packet successfully decoded or concealed. 525 * @param[out] x <tt>opus_int32 *</tt>: Number of samples (at current sampling rate). 526 * @hideinitializer */ 527 #define OPUS_GET_LAST_PACKET_DURATION(x) OPUS_GET_LAST_PACKET_DURATION_REQUEST, __opus_check_int_ptr(x) 528 /**@}*/ 529 530 /** @defgroup opus_genericctls Generic CTLs 531 * 532 * These macros are used with the \c opus_decoder_ctl and 533 * \c opus_encoder_ctl calls to generate a particular 534 * request. 535 * 536 * When called on an \c OpusDecoder they apply to that 537 * particular decoder instance. When called on an 538 * \c OpusEncoder they apply to the corresponding setting 539 * on that encoder instance, if present. 540 * 541 * Some usage examples: 542 * 543 * @code 544 * int ret; 545 * opus_int32 pitch; 546 * ret = opus_decoder_ctl(dec_ctx, OPUS_GET_PITCH(&pitch)); 547 * if (ret == OPUS_OK) return ret; 548 * 549 * opus_encoder_ctl(enc_ctx, OPUS_RESET_STATE); 550 * opus_decoder_ctl(dec_ctx, OPUS_RESET_STATE); 551 * 552 * opus_int32 enc_bw, dec_bw; 553 * opus_encoder_ctl(enc_ctx, OPUS_GET_BANDWIDTH(&enc_bw)); 554 * opus_decoder_ctl(dec_ctx, OPUS_GET_BANDWIDTH(&dec_bw)); 555 * if (enc_bw != dec_bw) { 556 * printf("packet bandwidth mismatch!\n"); 557 * } 558 * @endcode 559 * 560 * @see opus_encoder, opus_decoder_ctl, opus_encoder_ctl, opus_decoderctls, opus_encoderctls 561 * @{ 562 */ 563 564 /** Resets the codec state to be equivalent to a freshly initialized state. 565 * This should be called when switching streams in order to prevent 566 * the back to back decoding from giving different results from 567 * one at a time decoding. 568 * @hideinitializer */ 569 #define OPUS_RESET_STATE 4028 570 571 /** Gets the final state of the codec's entropy coder. 572 * This is used for testing purposes, 573 * The encoder and decoder state should be identical after coding a payload 574 * (assuming no data corruption or software bugs) 575 * 576 * @param[out] x <tt>opus_uint32 *</tt>: Entropy coder state 577 * 578 * @hideinitializer */ 579 #define OPUS_GET_FINAL_RANGE(x) OPUS_GET_FINAL_RANGE_REQUEST, __opus_check_uint_ptr(x) 580 581 /** Gets the pitch of the last decoded frame, if available. 582 * This can be used for any post-processing algorithm requiring the use of pitch, 583 * e.g. time stretching/shortening. If the last frame was not voiced, or if the 584 * pitch was not coded in the frame, then zero is returned. 585 * 586 * This CTL is only implemented for decoder instances. 587 * 588 * @param[out] x <tt>opus_int32 *</tt>: pitch period at 48 kHz (or 0 if not available) 589 * 590 * @hideinitializer */ 591 #define OPUS_GET_PITCH(x) OPUS_GET_PITCH_REQUEST, __opus_check_int_ptr(x) 592 593 /** Gets the encoder's configured bandpass or the decoder's last bandpass. 594 * @see OPUS_SET_BANDWIDTH 595 * @param[out] x <tt>opus_int32 *</tt>: Returns one of the following values: 596 * <dl> 597 * <dt>#OPUS_AUTO</dt> <dd>(default)</dd> 598 * <dt>#OPUS_BANDWIDTH_NARROWBAND</dt> <dd>4 kHz passband</dd> 599 * <dt>#OPUS_BANDWIDTH_MEDIUMBAND</dt> <dd>6 kHz passband</dd> 600 * <dt>#OPUS_BANDWIDTH_WIDEBAND</dt> <dd>8 kHz passband</dd> 601 * <dt>#OPUS_BANDWIDTH_SUPERWIDEBAND</dt><dd>12 kHz passband</dd> 602 * <dt>#OPUS_BANDWIDTH_FULLBAND</dt> <dd>20 kHz passband</dd> 603 * </dl> 604 * @hideinitializer */ 605 #define OPUS_GET_BANDWIDTH(x) OPUS_GET_BANDWIDTH_REQUEST, __opus_check_int_ptr(x) 606 607 /**@}*/ 608 609 /** @defgroup opus_decoderctls Decoder related CTLs 610 * @see opus_genericctls, opus_encoderctls, opus_decoder 611 * @{ 612 */ 613 614 /** Configures decoder gain adjustment. 615 * Scales the decoded output by a factor specified in Q8 dB units. 616 * This has a maximum range of -32768 to 32767 inclusive, and returns 617 * OPUS_BAD_ARG otherwise. The default is zero indicating no adjustment. 618 * This setting survives decoder reset. 619 * 620 * gain = pow(10, x/(20.0*256)) 621 * 622 * @param[in] x <tt>opus_int32</tt>: Amount to scale PCM signal by in Q8 dB units. 623 * @hideinitializer */ 624 #define OPUS_SET_GAIN(x) OPUS_SET_GAIN_REQUEST, __opus_check_int(x) 625 /** Gets the decoder's configured gain adjustment. @see OPUS_SET_GAIN 626 * 627 * @param[out] x <tt>opus_int32 *</tt>: Amount to scale PCM signal by in Q8 dB units. 628 * @hideinitializer */ 629 #define OPUS_GET_GAIN(x) OPUS_GET_GAIN_REQUEST, __opus_check_int_ptr(x) 630 631 /**@}*/ 632 633 /** @defgroup opus_libinfo Opus library information functions 634 * @{ 635 */ 636 637 /** Converts an opus error code into a human readable string. 638 * 639 * @param[in] error <tt>int</tt>: Error number 640 * @returns Error string 641 */ 642 OPUS_EXPORT const char *opus_strerror(int error); 643 644 /** Gets the libopus version string. 645 * 646 * @returns Version string 647 */ 648 OPUS_EXPORT const char *opus_get_version_string(void); 649 /**@}*/ 650 651 #ifdef __cplusplus 652 } 653 #endif 654 655 #endif /* OPUS_DEFINES_H */ 656
