| /* Copyright (c) 2007-2008 CSIRO |
| Copyright (c) 2007-2009 Xiph.Org Foundation |
| Copyright (c) 2008 Gregory Maxwell |
| Written by Jean-Marc Valin and Gregory Maxwell */ |
| /** |
| @file celt.h |
| @brief Contains all the functions for encoding and decoding audio |
| */ |
| |
| /* |
| Redistribution and use in source and binary forms, with or without |
| modification, are permitted provided that the following conditions |
| are met: |
| |
| - Redistributions of source code must retain the above copyright |
| notice, this list of conditions and the following disclaimer. |
| |
| - Redistributions in binary form must reproduce the above copyright |
| notice, this list of conditions and the following disclaimer in the |
| documentation and/or other materials provided with the distribution. |
| |
| THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER |
| OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef CELT_H |
| #define CELT_H |
| |
| #include "opus_types.h" |
| #include "opus_defines.h" |
| #include "opus_custom.h" |
| #include "entenc.h" |
| #include "entdec.h" |
| #include "arch.h" |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| #define CELTEncoder OpusCustomEncoder |
| #define CELTDecoder OpusCustomDecoder |
| #define CELTMode OpusCustomMode |
| |
| #define LEAK_BANDS 19 |
| |
| typedef struct { |
| int valid; |
| float tonality; |
| float tonality_slope; |
| float noisiness; |
| float activity; |
| float music_prob; |
| float vad_prob; |
| int bandwidth; |
| float activity_probability; |
| /* Store as Q6 char to save space. */ |
| unsigned char leak_boost[LEAK_BANDS]; |
| } AnalysisInfo; |
| |
| typedef struct { |
| int signalType; |
| int offset; |
| } SILKInfo; |
| |
| #define __celt_check_mode_ptr_ptr(ptr) ((ptr) + ((ptr) - (const CELTMode**)(ptr))) |
| |
| #define __celt_check_analysis_ptr(ptr) ((ptr) + ((ptr) - (const AnalysisInfo*)(ptr))) |
| |
| #define __celt_check_silkinfo_ptr(ptr) ((ptr) + ((ptr) - (const SILKInfo*)(ptr))) |
| |
| /* Encoder/decoder Requests */ |
| |
| |
| #define CELT_SET_PREDICTION_REQUEST 10002 |
| /** Controls the use of interframe prediction. |
| 0=Independent frames |
| 1=Short term interframe prediction allowed |
| 2=Long term prediction allowed |
| */ |
| #define CELT_SET_PREDICTION(x) CELT_SET_PREDICTION_REQUEST, __opus_check_int(x) |
| |
| #define CELT_SET_INPUT_CLIPPING_REQUEST 10004 |
| #define CELT_SET_INPUT_CLIPPING(x) CELT_SET_INPUT_CLIPPING_REQUEST, __opus_check_int(x) |
| |
| #define CELT_GET_AND_CLEAR_ERROR_REQUEST 10007 |
| #define CELT_GET_AND_CLEAR_ERROR(x) CELT_GET_AND_CLEAR_ERROR_REQUEST, __opus_check_int_ptr(x) |
| |
| #define CELT_SET_CHANNELS_REQUEST 10008 |
| #define CELT_SET_CHANNELS(x) CELT_SET_CHANNELS_REQUEST, __opus_check_int(x) |
| |
| |
| /* Internal */ |
| #define CELT_SET_START_BAND_REQUEST 10010 |
| #define CELT_SET_START_BAND(x) CELT_SET_START_BAND_REQUEST, __opus_check_int(x) |
| |
| #define CELT_SET_END_BAND_REQUEST 10012 |
| #define CELT_SET_END_BAND(x) CELT_SET_END_BAND_REQUEST, __opus_check_int(x) |
| |
| #define CELT_GET_MODE_REQUEST 10015 |
| /** Get the CELTMode used by an encoder or decoder */ |
| #define CELT_GET_MODE(x) CELT_GET_MODE_REQUEST, __celt_check_mode_ptr_ptr(x) |
| |
| #define CELT_SET_SIGNALLING_REQUEST 10016 |
| #define CELT_SET_SIGNALLING(x) CELT_SET_SIGNALLING_REQUEST, __opus_check_int(x) |
| |
| #define CELT_SET_TONALITY_REQUEST 10018 |
| #define CELT_SET_TONALITY(x) CELT_SET_TONALITY_REQUEST, __opus_check_int(x) |
| #define CELT_SET_TONALITY_SLOPE_REQUEST 10020 |
| #define CELT_SET_TONALITY_SLOPE(x) CELT_SET_TONALITY_SLOPE_REQUEST, __opus_check_int(x) |
| |
| #define CELT_SET_ANALYSIS_REQUEST 10022 |
| #define CELT_SET_ANALYSIS(x) CELT_SET_ANALYSIS_REQUEST, __celt_check_analysis_ptr(x) |
| |
| #define OPUS_SET_LFE_REQUEST 10024 |
| #define OPUS_SET_LFE(x) OPUS_SET_LFE_REQUEST, __opus_check_int(x) |
| |
| #define OPUS_SET_ENERGY_MASK_REQUEST 10026 |
| #define OPUS_SET_ENERGY_MASK(x) OPUS_SET_ENERGY_MASK_REQUEST, __opus_check_val16_ptr(x) |
| |
| #define CELT_SET_SILK_INFO_REQUEST 10028 |
| #define CELT_SET_SILK_INFO(x) CELT_SET_SILK_INFO_REQUEST, __celt_check_silkinfo_ptr(x) |
| |
| /* Encoder stuff */ |
| |
| int celt_encoder_get_size(int channels); |
| |
| int celt_encode_with_ec(OpusCustomEncoder * OPUS_RESTRICT st, const opus_val16 * pcm, int frame_size, unsigned char *compressed, int nbCompressedBytes, ec_enc *enc); |
| |
| int celt_encoder_init(CELTEncoder *st, opus_int32 sampling_rate, int channels, |
| int arch); |
| |
| |
| |
| /* Decoder stuff */ |
| |
| int celt_decoder_get_size(int channels); |
| |
| |
| int celt_decoder_init(CELTDecoder *st, opus_int32 sampling_rate, int channels); |
| |
| int celt_decode_with_ec(OpusCustomDecoder * OPUS_RESTRICT st, const unsigned char *data, |
| int len, opus_val16 * OPUS_RESTRICT pcm, int frame_size, ec_dec *dec, int accum); |
| |
| #define celt_encoder_ctl opus_custom_encoder_ctl |
| #define celt_decoder_ctl opus_custom_decoder_ctl |
| |
| |
| #ifdef CUSTOM_MODES |
| #define OPUS_CUSTOM_NOSTATIC |
| #else |
| #define OPUS_CUSTOM_NOSTATIC static OPUS_INLINE |
| #endif |
| |
| static const unsigned char trim_icdf[11] = {126, 124, 119, 109, 87, 41, 19, 9, 4, 2, 0}; |
| /* Probs: NONE: 21.875%, LIGHT: 6.25%, NORMAL: 65.625%, AGGRESSIVE: 6.25% */ |
| static const unsigned char spread_icdf[4] = {25, 23, 2, 0}; |
| |
| static const unsigned char tapset_icdf[3]={2,1,0}; |
| |
| #ifdef CUSTOM_MODES |
| static const unsigned char toOpusTable[20] = { |
| 0xE0, 0xE8, 0xF0, 0xF8, |
| 0xC0, 0xC8, 0xD0, 0xD8, |
| 0xA0, 0xA8, 0xB0, 0xB8, |
| 0x00, 0x00, 0x00, 0x00, |
| 0x80, 0x88, 0x90, 0x98, |
| }; |
| |
| static const unsigned char fromOpusTable[16] = { |
| 0x80, 0x88, 0x90, 0x98, |
| 0x40, 0x48, 0x50, 0x58, |
| 0x20, 0x28, 0x30, 0x38, |
| 0x00, 0x08, 0x10, 0x18 |
| }; |
| |
| static OPUS_INLINE int toOpus(unsigned char c) |
| { |
| int ret=0; |
| if (c<0xA0) |
| ret = toOpusTable[c>>3]; |
| if (ret == 0) |
| return -1; |
| else |
| return ret|(c&0x7); |
| } |
| |
| static OPUS_INLINE int fromOpus(unsigned char c) |
| { |
| if (c<0x80) |
| return -1; |
| else |
| return fromOpusTable[(c>>3)-16] | (c&0x7); |
| } |
| #endif /* CUSTOM_MODES */ |
| |
| #define COMBFILTER_MAXPERIOD 1024 |
| #define COMBFILTER_MINPERIOD 15 |
| |
| extern const signed char tf_select_table[4][8]; |
| |
| int resampling_factor(opus_int32 rate); |
| |
| void celt_preemphasis(const opus_val16 * OPUS_RESTRICT pcmp, celt_sig * OPUS_RESTRICT inp, |
| int N, int CC, int upsample, const opus_val16 *coef, celt_sig *mem, int clip); |
| |
| void comb_filter(opus_val32 *y, opus_val32 *x, int T0, int T1, int N, |
| opus_val16 g0, opus_val16 g1, int tapset0, int tapset1, |
| const opus_val16 *window, int overlap, int arch); |
| |
| #ifdef NON_STATIC_COMB_FILTER_CONST_C |
| void comb_filter_const_c(opus_val32 *y, opus_val32 *x, int T, int N, |
| opus_val16 g10, opus_val16 g11, opus_val16 g12); |
| #endif |
| |
| #ifndef OVERRIDE_COMB_FILTER_CONST |
| # define comb_filter_const(y, x, T, N, g10, g11, g12, arch) \ |
| ((void)(arch),comb_filter_const_c(y, x, T, N, g10, g11, g12)) |
| #endif |
| |
| void init_caps(const CELTMode *m,int *cap,int LM,int C); |
| |
| #ifdef RESYNTH |
| void deemphasis(celt_sig *in[], opus_val16 *pcm, int N, int C, int downsample, const opus_val16 *coef, celt_sig *mem); |
| void celt_synthesis(const CELTMode *mode, celt_norm *X, celt_sig * out_syn[], |
| opus_val16 *oldBandE, int start, int effEnd, int C, int CC, int isTransient, |
| int LM, int downsample, int silence); |
| #endif |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* CELT_H */ |