From bf1b7f131c933b83afe62f01c200366e4e2e37f3 Mon Sep 17 00:00:00 2001
From: Thom Johansen <thomj@rockbox.org>
Date: Thu, 1 Nov 2007 21:30:51 +0000
Subject: First attempt at ifdeffing out as much of the encoder stuff as
 possible from Speex. Gives a smaller binary and allows me to remove a couple
 more files from SOURCES.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@15394 a1c6a512-1295-4272-9138-f99709370657
---
 apps/codecs/libspeex/Makefile       |   2 +-
 apps/codecs/libspeex/SOURCES        |   3 -
 apps/codecs/libspeex/cb_search.c    |   4 +
 apps/codecs/libspeex/filters.c      |   6 ++
 apps/codecs/libspeex/ltp.c          |   4 +
 apps/codecs/libspeex/modes.c        | 147 ++++++++++++++++++++++++++++++++++++
 apps/codecs/libspeex/modes_wb.c     |  74 ++++++++++++++++++
 apps/codecs/libspeex/nb_celp.c      |  23 +-----
 apps/codecs/libspeex/quant_lsp.c    |   8 ++
 apps/codecs/libspeex/sb_celp.c      |  21 +-----
 apps/codecs/libspeex/speex_header.c |   2 +
 apps/codecs/libspeex/stereo.c       |   2 +
 12 files changed, 253 insertions(+), 43 deletions(-)

diff --git a/apps/codecs/libspeex/Makefile b/apps/codecs/libspeex/Makefile
index 651d589e65..7c73f02d67 100644
--- a/apps/codecs/libspeex/Makefile
+++ b/apps/codecs/libspeex/Makefile
@@ -14,7 +14,7 @@ ifdef APPEXTRA
    INCLUDES += $(patsubst %,-I$(APPSDIR)/%,$(subst :, ,$(APPEXTRA)))
 endif
 
-SPEEXOPTS = -DHAVE_CONFIG_H
+SPEEXOPTS = -DHAVE_CONFIG_H -DSPEEX_DISABLE_ENCODER
 
 # We're faster on ARM-targets with -O1 instead of -O2
 ifeq ($(CPU),arm)
diff --git a/apps/codecs/libspeex/SOURCES b/apps/codecs/libspeex/SOURCES
index e1f038160b..89e3f1db03 100644
--- a/apps/codecs/libspeex/SOURCES
+++ b/apps/codecs/libspeex/SOURCES
@@ -28,9 +28,6 @@ speex.c
 speex_callbacks.c
 speex_header.c
 stereo.c
-vbr.c
-vq.c
-window.c
 #ifdef CPU_COLDFIRE
 filters_cf.S
 ltp_cf.S
diff --git a/apps/codecs/libspeex/cb_search.c b/apps/codecs/libspeex/cb_search.c
index f7ecca4a62..8afb8ab5f3 100644
--- a/apps/codecs/libspeex/cb_search.c
+++ b/apps/codecs/libspeex/cb_search.c
@@ -49,6 +49,7 @@
 #include "cb_search_bfin.h"
 #endif
 
+#ifndef SPEEX_DISABLE_ENCODER
 #ifndef OVERRIDE_COMPUTE_WEIGHTED_CODEBOOK
 static void compute_weighted_codebook(const signed char *shape_cb, const spx_word16_t *r, spx_word16_t *resp, spx_word16_t *resp2, spx_word32_t *E, int shape_cb_size, int subvect_size, char *stack)
 {
@@ -511,6 +512,7 @@ int   update_target
          target[j]=SUB16(target[j],PSHR16(r2[j],2));
    }
 }
+#endif
 
 
 void split_cb_shape_sign_unquant(
@@ -571,6 +573,7 @@ spx_int32_t *seed
    }
 }
 
+#ifndef SPEEX_DISABLE_ENCODER
 void noise_codebook_quant(
 spx_word16_t target[],			/* target vector */
 spx_coef_t ak[],			/* LPCs for this subframe */
@@ -597,6 +600,7 @@ int   update_target
    for (i=0;i<nsf;i++)
       target[i]=0;
 }
+#endif
 
 
 void noise_codebook_unquant(
diff --git a/apps/codecs/libspeex/filters.c b/apps/codecs/libspeex/filters.c
index 36b110af30..9c144ebffa 100644
--- a/apps/codecs/libspeex/filters.c
+++ b/apps/codecs/libspeex/filters.c
@@ -124,6 +124,7 @@ void signal_mul(const spx_sig_t *x, spx_sig_t *y, spx_word32_t scale, int len)
    }
 }
 
+#ifndef SPEEX_DISABLE_ENCODER
 void signal_div(const spx_word16_t *x, spx_word16_t *y, spx_word32_t scale, int len)
 {
    int i;
@@ -156,6 +157,7 @@ void signal_div(const spx_word16_t *x, spx_word16_t *y, spx_word32_t scale, int
       }
    }
 }
+#endif
 
 #else
 
@@ -320,6 +322,7 @@ spx_word16_t compute_rms16(const spx_word16_t *x, int len)
 
 
 
+#ifndef SPEEX_DISABLE_ENCODER
 #ifndef OVERRIDE_FILTER_MEM16
 void filter_mem16(const spx_word16_t *x, const spx_coef_t *num, const spx_coef_t *den, spx_word16_t *y, int N, int ord, spx_mem_t *mem, char *stack)
 {
@@ -339,6 +342,7 @@ void filter_mem16(const spx_word16_t *x, const spx_coef_t *num, const spx_coef_t
    }
 }
 #endif
+#endif
 
 #ifndef OVERRIDE_IIR_MEM16
 void iir_mem16(const spx_word16_t *x, const spx_coef_t *den, spx_word16_t *y, int N, int ord, spx_mem_t *mem, char *stack)
@@ -360,6 +364,7 @@ void iir_mem16(const spx_word16_t *x, const spx_coef_t *den, spx_word16_t *y, in
 }
 #endif
 
+#ifndef SPEEX_DISABLE_ENCODER
 #ifndef OVERRIDE_FIR_MEM16
 void fir_mem16(const spx_word16_t *x, const spx_coef_t *num, spx_word16_t *y, int N, int ord, spx_mem_t *mem, char *stack)
 {
@@ -477,6 +482,7 @@ void qmf_decomp(const spx_word16_t *xx, const spx_word16_t *aa, spx_word16_t *y1
       y2[k] = EXTRACT16(SATURATE(PSHR32(y2k,15),32767));
    }
 }
+#endif
 
 #ifndef OVERRIDE_QMF_SYNTH
 /* Re-synthesised a signal from the QMF low-band and high-band signals */
diff --git a/apps/codecs/libspeex/ltp.c b/apps/codecs/libspeex/ltp.c
index 6af02e2582..720baaad02 100644
--- a/apps/codecs/libspeex/ltp.c
+++ b/apps/codecs/libspeex/ltp.c
@@ -75,6 +75,7 @@ spx_word32_t inner_prod(const spx_word16_t *x, const spx_word16_t *y, int len)
 }
 #endif
 
+#ifndef SPEEX_DISABLE_ENCODER
 #ifndef OVERRIDE_PITCH_XCORR
 #if 0 /* HINT: Enable this for machines with enough registers (i.e. not x86) */
 void pitch_xcorr(const spx_word16_t *_x, const spx_word16_t *_y, spx_word32_t *corr, int len, int nb_pitch, char *stack)
@@ -659,6 +660,7 @@ spx_word32_t *cumul_gain
 #endif
    return pitch;
 }
+#endif
 
 void pitch_unquant_3tap(
 spx_word16_t exc[],             /* Input excitation */
@@ -760,6 +762,7 @@ int cdbk_offset
 }
 
 
+#ifndef SPEEX_DISABLE_ENCODER
 /** Forced pitch delay and gain */
 int forced_pitch_quant(
 spx_word16_t target[],                 /* Target vector */
@@ -809,6 +812,7 @@ spx_word32_t *cumul_gain
       target[i]=EXTRACT16(SATURATE(SUB32(EXTEND32(target[i]),EXTEND32(res[i])),32700));
    return start;
 }
+#endif
 
 /** Unquantize forced pitch delay and gain */
 void forced_pitch_unquant(
diff --git a/apps/codecs/libspeex/modes.c b/apps/codecs/libspeex/modes.c
index 7906ab5faa..0478f978d1 100644
--- a/apps/codecs/libspeex/modes.c
+++ b/apps/codecs/libspeex/modes.c
@@ -153,6 +153,7 @@ static const SpeexSubmode nb_submode1 = {
    1,
    0,
    0,
+#ifndef SPEEX_DISABLE_ENCODER
    /* LSP quantization */
    lsp_quant_lbr,
    lsp_unquant_lbr,
@@ -163,6 +164,18 @@ static const SpeexSubmode nb_submode1 = {
    /* No innovation quantization (noise only) */
    noise_codebook_quant,
    noise_codebook_unquant,
+#else
+   /* LSP quantization */
+   NULL,
+   lsp_unquant_lbr,
+   /* No pitch quantization */
+   NULL,
+   forced_pitch_unquant,
+   NULL,
+   /* No innovation quantization (noise only) */
+   NULL,
+   noise_codebook_unquant,
+#endif
    NULL,
    -1,
    43
@@ -174,6 +187,7 @@ static const SpeexSubmode nb_submode8 = {
    1,
    0,
    0,
+#ifndef SPEEX_DISABLE_ENCODER
    /*LSP quantization*/
    lsp_quant_lbr,
    lsp_unquant_lbr,
@@ -185,6 +199,19 @@ static const SpeexSubmode nb_submode8 = {
    split_cb_search_shape_sign,
    split_cb_shape_sign_unquant,
    &split_cb_nb_ulbr,
+#else
+   /*LSP quantization*/
+   NULL,
+   lsp_unquant_lbr,
+   /*No pitch quantization*/
+   NULL,
+   forced_pitch_unquant,
+   NULL,
+   /*Innovation quantization*/
+   NULL,
+   split_cb_shape_sign_unquant,
+   &split_cb_nb_ulbr,
+#endif
    QCONST16(.5,15),
    79
 };
@@ -195,6 +222,7 @@ static const SpeexSubmode nb_submode2 = {
    0,
    0,
    0,
+#ifndef SPEEX_DISABLE_ENCODER
    /*LSP quantization*/
    lsp_quant_lbr,
    lsp_unquant_lbr,
@@ -206,6 +234,19 @@ static const SpeexSubmode nb_submode2 = {
    split_cb_search_shape_sign,
    split_cb_shape_sign_unquant,
    &split_cb_nb_vlbr,
+#else
+   /*LSP quantization*/
+   NULL,
+   lsp_unquant_lbr,
+   /*No pitch quantization*/
+   NULL,
+   pitch_unquant_3tap,
+   &ltp_params_vlbr,
+   /*Innovation quantization*/
+   NULL,
+   split_cb_shape_sign_unquant,
+   &split_cb_nb_vlbr,
+#endif
    QCONST16(.6,15),
    119
 };
@@ -216,6 +257,7 @@ static const SpeexSubmode nb_submode3 = {
    0,
    1,
    0,
+#ifndef SPEEX_DISABLE_ENCODER
    /*LSP quantization*/
    lsp_quant_lbr,
    lsp_unquant_lbr,
@@ -227,6 +269,19 @@ static const SpeexSubmode nb_submode3 = {
    split_cb_search_shape_sign,
    split_cb_shape_sign_unquant,
    &split_cb_nb_lbr,
+#else
+   /*LSP quantization*/
+   NULL,
+   lsp_unquant_lbr,
+   /*Pitch quantization*/
+   NULL,
+   pitch_unquant_3tap,
+   &ltp_params_lbr,
+   /*Innovation quantization*/
+   NULL,
+   split_cb_shape_sign_unquant,
+   &split_cb_nb_lbr,
+#endif
    QCONST16(.55,15),
    160
 };
@@ -237,6 +292,7 @@ static const SpeexSubmode nb_submode4 = {
    0,
    1,
    0,
+#ifndef SPEEX_DISABLE_ENCODER
    /*LSP quantization*/
    lsp_quant_lbr,
    lsp_unquant_lbr,
@@ -248,6 +304,19 @@ static const SpeexSubmode nb_submode4 = {
    split_cb_search_shape_sign,
    split_cb_shape_sign_unquant,
    &split_cb_nb_med,
+#else
+   /*LSP quantization*/
+   NULL,
+   lsp_unquant_lbr,
+   /*Pitch quantization*/
+   NULL,
+   pitch_unquant_3tap,
+   &ltp_params_med,
+   /*Innovation quantization*/
+   NULL,
+   split_cb_shape_sign_unquant,
+   &split_cb_nb_med,
+#endif
    QCONST16(.45,15),
    220
 };
@@ -258,6 +327,7 @@ static const SpeexSubmode nb_submode5 = {
    0,
    3,
    0,
+#ifndef SPEEX_DISABLE_ENCODER
    /*LSP quantization*/
    lsp_quant_nb,
    lsp_unquant_nb,
@@ -269,6 +339,19 @@ static const SpeexSubmode nb_submode5 = {
    split_cb_search_shape_sign,
    split_cb_shape_sign_unquant,
    &split_cb_nb,
+#else
+   /*LSP quantization*/
+   NULL,
+   lsp_unquant_nb,
+   /*Pitch quantization*/
+   NULL,
+   pitch_unquant_3tap,
+   &ltp_params_nb,
+   /*Innovation quantization*/
+   NULL,
+   split_cb_shape_sign_unquant,
+   &split_cb_nb,
+#endif
    QCONST16(.3,15),
    300
 };
@@ -279,6 +362,7 @@ static const SpeexSubmode nb_submode6 = {
    0,
    3,
    0,
+#ifndef SPEEX_DISABLE_ENCODER
    /*LSP quantization*/
    lsp_quant_nb,
    lsp_unquant_nb,
@@ -290,6 +374,19 @@ static const SpeexSubmode nb_submode6 = {
    split_cb_search_shape_sign,
    split_cb_shape_sign_unquant,
    &split_cb_sb,
+#else
+   /*LSP quantization*/
+   NULL,
+   lsp_unquant_nb,
+   /*Pitch quantization*/
+   NULL,
+   pitch_unquant_3tap,
+   &ltp_params_nb,
+   /*Innovation quantization*/
+   NULL,
+   split_cb_shape_sign_unquant,
+   &split_cb_sb,
+#endif
    QCONST16(.2,15),
    364
 };
@@ -300,6 +397,7 @@ static const SpeexSubmode nb_submode7 = {
    0,
    3,
    1,
+#ifndef SPEEX_DISABLE_ENCODER
    /*LSP quantization*/
    lsp_quant_nb,
    lsp_unquant_nb,
@@ -311,6 +409,19 @@ static const SpeexSubmode nb_submode7 = {
    split_cb_search_shape_sign,
    split_cb_shape_sign_unquant,
    &split_cb_nb,
+#else
+   /*LSP quantization*/
+   NULL,
+   lsp_unquant_nb,
+   /*Pitch quantization*/
+   NULL,
+   pitch_unquant_3tap,
+   &ltp_params_nb,
+   /*Innovation quantization*/
+   NULL,
+   split_cb_shape_sign_unquant,
+   &split_cb_nb,
+#endif
    QCONST16(.1,15),
    492
 };
@@ -347,6 +458,7 @@ const SpeexMode speex_nb_mode = {
    "narrowband",
    0,
    4,
+#ifndef SPEEX_DISABLE_ENCODER
    &nb_encoder_init,
    &nb_encoder_destroy,
    &nb_encode,
@@ -355,6 +467,16 @@ const SpeexMode speex_nb_mode = {
    &nb_decode,
    &nb_encoder_ctl,
    &nb_decoder_ctl,
+#else
+   NULL,
+   NULL,
+   NULL,
+   &nb_decoder_init,
+   &nb_decoder_destroy,
+   &nb_decode,
+   NULL,
+   &nb_decoder_ctl,
+#endif
 };
 
 
@@ -388,6 +510,7 @@ static const SpeexSubmode nb_48k_submode = {
    0,
    0,
    0,
+#ifndef SPEEX_DISABLE_ENCODER
    /*LSP quantization*/
    lsp_quant_48k,
    lsp_unquant_48k,
@@ -399,6 +522,19 @@ static const SpeexSubmode nb_48k_submode = {
    split_cb_search_shape_sign,
    split_cb_shape_sign_unquant,
    &split_cb_nb_48k,
+#else
+   /*LSP quantization*/
+   NULL,
+   lsp_unquant_48k,
+   /*No pitch quantization*/
+   NULL,
+   pitch_unquant_3tap,
+   &ltp_params_48k,
+   /*Innovation quantization*/
+   NULL,
+   split_cb_shape_sign_unquant,
+   &split_cb_nb_48k,
+#endif
    QCONST16(.7,15),
    144
 };
@@ -429,6 +565,7 @@ const SpeexMode speex_nb_48k_mode = {
    "narrowband 4.8 kbps",
    1000,
    4,
+#ifndef SPEEX_DISABLE_ENCODER
    &nb_encoder_init,
    &nb_encoder_destroy,
    &nb_encode,
@@ -437,6 +574,16 @@ const SpeexMode speex_nb_48k_mode = {
    &nb_decode,
    &nb_encoder_ctl,
    &nb_decoder_ctl,
+#else
+   NULL,
+   NULL,
+   NULL,
+   &nb_decoder_init,
+   &nb_decoder_destroy,
+   &nb_decode,
+   NULL,
+   &nb_decoder_ctl,
+#endif
 };
 
 
diff --git a/apps/codecs/libspeex/modes_wb.c b/apps/codecs/libspeex/modes_wb.c
index 862bd6fa31..e4c95a85bc 100644
--- a/apps/codecs/libspeex/modes_wb.c
+++ b/apps/codecs/libspeex/modes_wb.c
@@ -87,8 +87,13 @@ static const SpeexSubmode wb_submode1 = {
    1,
    0,
    /*LSP quantization*/
+#ifndef SPEEX_DISABLE_ENCODER
    lsp_quant_high,
    lsp_unquant_high,
+#else
+   NULL,
+   lsp_unquant_high,
+#endif
    /*Pitch quantization*/
    NULL,
    NULL,
@@ -107,6 +112,7 @@ static const SpeexSubmode wb_submode2 = {
    0,
    1,
    0,
+#ifndef SPEEX_DISABLE_ENCODER
    /*LSP quantization*/
    lsp_quant_high,
    lsp_unquant_high,
@@ -117,6 +123,18 @@ static const SpeexSubmode wb_submode2 = {
    /*Innovation quantization*/
    split_cb_search_shape_sign,
    split_cb_shape_sign_unquant,
+#else
+   /*LSP quantization*/
+   NULL,
+   lsp_unquant_high,
+   /*Pitch quantization*/
+   NULL,
+   NULL,
+   NULL,
+   /*Innovation quantization*/
+   NULL,
+   split_cb_shape_sign_unquant,
+#endif
 #ifdef DISABLE_WIDEBAND
    NULL,
 #else
@@ -132,6 +150,7 @@ static const SpeexSubmode wb_submode3 = {
    0,
    1,
    0,
+#ifndef SPEEX_DISABLE_ENCODER
    /*LSP quantization*/
    lsp_quant_high,
    lsp_unquant_high,
@@ -142,6 +161,18 @@ static const SpeexSubmode wb_submode3 = {
    /*Innovation quantization*/
    split_cb_search_shape_sign,
    split_cb_shape_sign_unquant,
+#else
+   /*LSP quantization*/
+   NULL,
+   lsp_unquant_high,
+   /*Pitch quantization*/
+   NULL,
+   NULL,
+   NULL,
+   /*Innovation quantization*/
+   NULL,
+   split_cb_shape_sign_unquant,
+#endif
 #ifdef DISABLE_WIDEBAND
    NULL,
 #else
@@ -156,6 +187,7 @@ static const SpeexSubmode wb_submode4 = {
    0,
    1,
    1,
+#ifndef SPEEX_DISABLE_ENCODER
    /*LSP quantization*/
    lsp_quant_high,
    lsp_unquant_high,
@@ -166,6 +198,18 @@ static const SpeexSubmode wb_submode4 = {
    /*Innovation quantization*/
    split_cb_search_shape_sign,
    split_cb_shape_sign_unquant,
+#else
+   /*LSP quantization*/
+   NULL,
+   lsp_unquant_high,
+   /*Pitch quantization*/
+   NULL,
+   NULL,
+   NULL,
+   /*Innovation quantization*/
+   NULL,
+   split_cb_shape_sign_unquant,
+#endif
 #ifdef DISABLE_WIDEBAND
    NULL,
 #else
@@ -195,7 +239,11 @@ static const SpeexSBMode sb_wb_mode = {
                      3,
                      {1, 8, 2, 3, 4, 5, 5, 6, 6, 7, 7},
                      {1, 1, 1, 1, 1, 1, 2, 2, 3, 3, 4},
+#ifndef SPEEX_DISABLE_ENCODER
                      vbr_hb_thresh,
+#else
+                     NULL,
+#endif
                      5
 };
 
@@ -206,6 +254,7 @@ const SpeexMode speex_wb_mode = {
    "wideband (sub-band CELP)",
    1,
    4,
+#ifndef SPEEX_DISABLE_ENCODER
    &sb_encoder_init,
    &sb_encoder_destroy,
    &sb_encode,
@@ -214,6 +263,16 @@ const SpeexMode speex_wb_mode = {
    &sb_decode,
    &sb_encoder_ctl,
    &sb_decoder_ctl,
+#else
+   NULL,
+   NULL,
+   NULL,
+   &sb_decoder_init,
+   &sb_decoder_destroy,
+   &sb_decode,
+   NULL,
+   &sb_decoder_ctl,
+#endif
 };
 
 
@@ -241,7 +300,11 @@ static const SpeexSBMode sb_uwb_mode = {
                      1,
                      {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10},
                      {0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1},
+#ifndef SPEEX_DISABLE_ENCODER
                      vbr_uhb_thresh,
+#else
+                     NULL,
+#endif
                      2
 };
 
@@ -276,6 +339,7 @@ const SpeexMode speex_uwb_mode = {
    "ultra-wideband (sub-band CELP)",
    2,
    4,
+#ifndef SPEEX_DISABLE_ENCODER
    &sb_encoder_init,
    &sb_encoder_destroy,
    &sb_encode,
@@ -284,6 +348,16 @@ const SpeexMode speex_uwb_mode = {
    &sb_decode,
    &sb_encoder_ctl,
    &sb_decoder_ctl,
+#else
+   NULL,
+   NULL,
+   NULL,
+   &sb_decoder_init,
+   &sb_decoder_destroy,
+   &sb_decode,
+   NULL,
+   &sb_decoder_ctl,
+#endif
 };
 
 /* We have defined speex_lib_get_mode() as a macro in speex.h */
diff --git a/apps/codecs/libspeex/nb_celp.c b/apps/codecs/libspeex/nb_celp.c
index aab0b722dc..50e1b11372 100644
--- a/apps/codecs/libspeex/nb_celp.c
+++ b/apps/codecs/libspeex/nb_celp.c
@@ -109,8 +109,8 @@ const float exc_gain_quant_scal1[2]={0.70469f, 1.05127f};
 #define sqr(x) ((x)*(x))
 
 extern const spx_word16_t lpc_window[];
-#if 0
-void *nb_encoder_init(const speexmode *m)
+#ifndef SPEEX_DISABLE_ENCODER
+void *nb_encoder_init(const SpeexMode *m)
 {
    EncState *st;
    const SpeexNBMode *mode;
@@ -1024,18 +1024,6 @@ int nb_encode(void *state, void *vin, SpeexBits *bits)
 
    return 1;
 }
-#else
-void *nb_encoder_init(const SpeexMode *m)
-{
-    return NULL;
-}
-void nb_encoder_destroy(void *state)
-{
-}
-int nb_encode(void *state, void *vin, SpeexBits *bits)
-{
-    return 1;
-}
 #endif
 
 static DecState global_decstate IBSS_ATTR;
@@ -1763,7 +1751,7 @@ int nb_decode(void *state, SpeexBits *bits, void *vout)
    return 0;
 }
 
-#if 0
+#ifndef SPEEX_DISABLE_ENCODER 
 int nb_encoder_ctl(void *state, int request, void *ptr)
 {
    EncState *st;
@@ -1959,11 +1947,6 @@ int nb_encoder_ctl(void *state, int request, void *ptr)
    }
    return 0;
 }
-#else
-int nb_encoder_ctl(void *state, int request, void *ptr)
-{
-    return 0;
-}
 #endif
 
 int nb_decoder_ctl(void *state, int request, void *ptr)
diff --git a/apps/codecs/libspeex/quant_lsp.c b/apps/codecs/libspeex/quant_lsp.c
index 9a6afa2ca0..b8dcfcc088 100644
--- a/apps/codecs/libspeex/quant_lsp.c
+++ b/apps/codecs/libspeex/quant_lsp.c
@@ -68,6 +68,7 @@
 
 #endif
 
+#ifndef SPEEX_DISABLE_ENCODER
 static void compute_quant_weights(spx_lsp_t *qlsp, spx_word16_t *quant_weight, int order)
 {
    int i;
@@ -209,6 +210,7 @@ void lsp_quant_nb(spx_lsp_t *lsp, spx_lsp_t *qlsp, int order, SpeexBits *bits)
    for (i=0;i<order;i++)
       qlsp[i]=lsp[i]-qlsp[i];
 }
+#endif
 
 void lsp_unquant_nb(spx_lsp_t *lsp, int order, SpeexBits *bits)
 {
@@ -239,6 +241,7 @@ void lsp_unquant_nb(spx_lsp_t *lsp, int order, SpeexBits *bits)
 }
 
 
+#ifndef SPEEX_DISABLE_ENCODER
 void lsp_quant_lbr(spx_lsp_t *lsp, spx_lsp_t *qlsp, int order, SpeexBits *bits)
 {
    int i;
@@ -279,6 +282,7 @@ void lsp_quant_lbr(spx_lsp_t *lsp, spx_lsp_t *qlsp, int order, SpeexBits *bits)
    for (i=0;i<order;i++)
       qlsp[i]=lsp[i]-qlsp[i];
 }
+#endif
 
 void lsp_unquant_lbr(spx_lsp_t *lsp, int order, SpeexBits *bits)
 {
@@ -316,6 +320,7 @@ extern const signed char high_lsp_cdbk[];
 extern const signed char high_lsp_cdbk2[];
 
 
+#ifndef SPEEX_DISABLE_ENCODER
 void lsp_quant_high(spx_lsp_t *lsp, spx_lsp_t *qlsp, int order, SpeexBits *bits)
 {
    int i;
@@ -362,6 +367,7 @@ void lsp_quant_high(spx_lsp_t *lsp, spx_lsp_t *qlsp, int order, SpeexBits *bits)
    for (i=0;i<order;i++)
       qlsp[i]=lsp[i]-qlsp[i];
 }
+#endif
 
 void lsp_unquant_high(spx_lsp_t *lsp, int order, SpeexBits *bits)
 {
@@ -389,6 +395,7 @@ void lsp_unquant_high(spx_lsp_t *lsp, int order, SpeexBits *bits)
 extern const signed char cdbk_lsp_vlbr[5120];
 extern const signed char cdbk_lsp2_vlbr[160];
 
+#ifndef SPEEX_DISABLE_ENCODER
 void lsp_quant_48k(spx_lsp_t *lsp, spx_lsp_t *qlsp, int order, SpeexBits *bits)
 {
    int i;
@@ -427,6 +434,7 @@ void lsp_quant_48k(spx_lsp_t *lsp, spx_lsp_t *qlsp, int order, SpeexBits *bits)
    for (i=0;i<order;i++)
       qlsp[i]=lsp[i]-qlsp[i];
 }
+#endif
 
 void lsp_unquant_48k(spx_lsp_t *lsp, int order, SpeexBits *bits)
 {
diff --git a/apps/codecs/libspeex/sb_celp.c b/apps/codecs/libspeex/sb_celp.c
index c67197144c..cd6da32476 100644
--- a/apps/codecs/libspeex/sb_celp.c
+++ b/apps/codecs/libspeex/sb_celp.c
@@ -185,7 +185,7 @@ static const float h0[64] = {
 
 extern const spx_word16_t lpc_window[];
 
-#if 0 
+#ifndef SPEEX_DISABLE_ENCODER 
 void *sb_encoder_init(const SpeexMode *m)
 {
    int i;
@@ -751,18 +751,6 @@ int sb_encode(void *state, void *vin, SpeexBits *bits)
 
    return 1;
 }
-#else
-void *sb_encoder_init(const SpeexMode *m)
-{
-    return NULL;
-}
-void sb_encoder_destroy(void *state)
-{
-}
-int sb_encode(void *state, void *vin, SpeexBits *bits)
-{
-    return 1;
-}
 #endif
 
 
@@ -1127,7 +1115,7 @@ int sb_decode(void *state, SpeexBits *bits, void *vout)
    return 0;
 }
 
-#if 0
+#ifndef SPEEX_DISABLE_ENCODER
 int sb_encoder_ctl(void *state, int request, void *ptr)
 {
    SBEncState *st;
@@ -1375,11 +1363,6 @@ int sb_encoder_ctl(void *state, int request, void *ptr)
    }
    return 0;
 }
-#else
-int sb_encoder_ctl(void *state, int request, void *ptr)
-{
-    return 0;
-}
 #endif
 
 int sb_decoder_ctl(void *state, int request, void *ptr)
diff --git a/apps/codecs/libspeex/speex_header.c b/apps/codecs/libspeex/speex_header.c
index 2e7c415686..8fd166576b 100644
--- a/apps/codecs/libspeex/speex_header.c
+++ b/apps/codecs/libspeex/speex_header.c
@@ -67,6 +67,7 @@ typedef struct SpeexHeader {
 } SpeexHeader;
 */
 
+#ifndef SPEEX_DISABLE_ENCODER
 void speex_init_header(SpeexHeader *header, int rate, int nb_channels, const SpeexMode *m)
 {
    int i;
@@ -125,6 +126,7 @@ char *speex_header_to_packet(SpeexHeader *header, int *size)
    *size = sizeof(SpeexHeader);
    return (char *)le_header;
 }
+#endif
 
 SpeexHeader *speex_packet_to_header(char *packet, int size)
 {
diff --git a/apps/codecs/libspeex/stereo.c b/apps/codecs/libspeex/stereo.c
index ced56b1134..b0c65b812f 100644
--- a/apps/codecs/libspeex/stereo.c
+++ b/apps/codecs/libspeex/stereo.c
@@ -41,6 +41,7 @@
 /*float e_ratio_quant[4] = {1, 1.26, 1.587, 2};*/
 static const float e_ratio_quant[4] = {.25f, .315f, .397f, .5f};
 
+#ifndef SPEEX_DISABLE_ENCODER
 void speex_encode_stereo(float *data, int frame_size, SpeexBits *bits)
 {
    int i, tmp;
@@ -114,6 +115,7 @@ void speex_encode_stereo_int(spx_int16_t *data, int frame_size, SpeexBits *bits)
    tmp=vq_index(&e_ratio, e_ratio_quant, 1, 4);
    speex_bits_pack(bits, tmp, 2);
 }
+#endif
 
 void speex_decode_stereo(float *data, int frame_size, SpeexStereoState *stereo)
 {
-- 
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