Index: speex/libspeex/sb_celp.h |
=================================================================== |
--- speex/libspeex/sb_celp.h (revision 0) |
+++ speex/libspeex/sb_celp.h (revision 0) |
@@ -0,0 +1,155 @@ |
+/* 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 |
Property changes on: speex/libspeex/sb_celp.h |
___________________________________________________________________ |
Name: svn:executable |
+ * |