| /* Copyright (C) 2002-2006 Jean-Marc Valin */ |
| /** |
| @file sb_celp.h |
| @brief Sub-band CELP mode used for wideband encoding |
| */ |
| /* |
| 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. |
| |
| - Neither the name of the Xiph.org Foundation nor the names of its |
| contributors may be used to endorse or promote products derived from |
| this software without specific prior written permission. |
| |
| 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 FOUNDATION 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 SB_CELP_H |
| #define SB_CELP_H |
| |
| #include "modes.h" |
| #include <speex/speex_bits.h> |
| #include "nb_celp.h" |
| |
| /**Structure representing the full state of the sub-band encoder*/ |
| typedef struct SBEncState { |
| const SpeexMode *mode; /**< Pointer to the mode (containing for vtable info) */ |
| void *st_low; /**< State of the low-band (narrowband) encoder */ |
| int full_frame_size; /**< Length of full-band frames*/ |
| int frame_size; /**< Length of high-band frames*/ |
| int subframeSize; /**< Length of high-band sub-frames*/ |
| int nbSubframes; /**< Number of high-band sub-frames*/ |
| int windowSize; /**< Length of high-band LPC window*/ |
| int lpcSize; /**< Order of high-band LPC analysis */ |
| int first; /**< First frame? */ |
| spx_word16_t lpc_floor; /**< Controls LPC analysis noise floor */ |
| spx_word16_t gamma1; /**< Perceptual weighting coef 1 */ |
| spx_word16_t gamma2; /**< Perceptual weighting coef 2 */ |
| |
| char *stack; /**< Temporary allocation stack */ |
| spx_word16_t *high; /**< High-band signal (buffer) */ |
| spx_word16_t *h0_mem, *h1_mem; |
| |
| const spx_word16_t *window; /**< LPC analysis window */ |
| const spx_word16_t *lagWindow; /**< Auto-correlation window */ |
| spx_lsp_t *old_lsp; /**< LSPs of previous frame */ |
| spx_lsp_t *old_qlsp; /**< Quantized LSPs of previous frame */ |
| spx_coef_t *interp_qlpc; /**< Interpolated quantized LPCs for current sub-frame */ |
| |
| spx_mem_t *mem_sp; /**< Synthesis signal memory */ |
| spx_mem_t *mem_sp2; |
| spx_mem_t *mem_sw; /**< Perceptual signal memory */ |
| spx_word32_t *pi_gain; |
| spx_word16_t *exc_rms; |
| spx_word16_t *innov_rms_save; /**< If non-NULL, innovation is copied here */ |
| |
| #ifndef DISABLE_VBR |
| float vbr_quality; /**< Quality setting for VBR encoding */ |
| int vbr_enabled; /**< 1 for enabling VBR, 0 otherwise */ |
| spx_int32_t vbr_max; /**< Max bit-rate allowed in VBR mode (total) */ |
| spx_int32_t vbr_max_high; /**< Max bit-rate allowed in VBR mode for the high-band */ |
| spx_int32_t abr_enabled; /**< ABR setting (in bps), 0 if off */ |
| float abr_drift; |
| float abr_drift2; |
| float abr_count; |
| int vad_enabled; /**< 1 for enabling VAD, 0 otherwise */ |
| float relative_quality; |
| #endif /* #ifndef DISABLE_VBR */ |
| |
| int encode_submode; |
| const SpeexSubmode * const *submodes; |
| int submodeID; |
| int submodeSelect; |
| int complexity; |
| spx_int32_t sampling_rate; |
| |
| } SBEncState; |
| |
| |
| /**Structure representing the full state of the sub-band decoder*/ |
| typedef struct SBDecState { |
| const SpeexMode *mode; /**< Pointer to the mode (containing for vtable info) */ |
| void *st_low; /**< State of the low-band (narrowband) encoder */ |
| int full_frame_size; |
| int frame_size; |
| int subframeSize; |
| int nbSubframes; |
| int lpcSize; |
| int first; |
| spx_int32_t sampling_rate; |
| int lpc_enh_enabled; |
| |
| char *stack; |
| spx_word16_t *g0_mem, *g1_mem; |
| |
| spx_word16_t *excBuf; |
| spx_lsp_t *old_qlsp; |
| spx_coef_t *interp_qlpc; |
| |
| spx_mem_t *mem_sp; |
| spx_word32_t *pi_gain; |
| spx_word16_t *exc_rms; |
| spx_word16_t *innov_save; /** If non-NULL, innovation is copied here */ |
| |
| spx_word16_t last_ener; |
| spx_int32_t seed; |
| |
| int encode_submode; |
| const SpeexSubmode * const *submodes; |
| int submodeID; |
| } SBDecState; |
| |
| |
| /**Initializes encoder state*/ |
| void *sb_encoder_init(const SpeexMode *m); |
| |
| /**De-allocates encoder state resources*/ |
| void sb_encoder_destroy(void *state); |
| |
| /**Encodes one frame*/ |
| int sb_encode(void *state, void *in, SpeexBits *bits); |
| |
| |
| /**Initializes decoder state*/ |
| void *sb_decoder_init(const SpeexMode *m); |
| |
| /**De-allocates decoder state resources*/ |
| void sb_decoder_destroy(void *state); |
| |
| /**Decodes one frame*/ |
| int sb_decode(void *state, SpeexBits *bits, void *out); |
| |
| int sb_encoder_ctl(void *state, int request, void *ptr); |
| |
| int sb_decoder_ctl(void *state, int request, void *ptr); |
| |
| #endif |