From f4284aea8590d63baf818b4d6a3df13153949fc2 Mon Sep 17 00:00:00 2001
From: Jean-Marc Valin <jean-marc.valin@octasic.com>
Date: Tue, 12 Aug 2008 16:49:13 -0400
Subject: Added an option to implement iir_mem16() and fir_mem16() in terms of
 filter_mem16()

---
 libspeex/filters.c |  4 +++-
 libspeex/filters.h | 11 +++++++++++
 libspeex/ltp.c     |  4 ++--
 libspeex/ltp.h     |  1 -
 4 files changed, 16 insertions(+), 4 deletions(-)

(limited to 'libspeex')

diff --git a/libspeex/filters.c b/libspeex/filters.c
index d7c950e..473e16c 100644
--- a/libspeex/filters.c
+++ b/libspeex/filters.c
@@ -320,7 +320,9 @@ spx_word16_t compute_rms16(const spx_word16_t *x, int len)
 }
 #endif
 
-
+#ifdef MERGE_FILTERS
+const spx_word16_t zeros[10] = {0,0,0,0,0,0,0,0,0,0};
+#endif  /* MERGE_FILTERS */
 
 #if !defined(OVERRIDE_FILTER_MEM16) && !defined(DISABLE_ENCODER)
 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)
diff --git a/libspeex/filters.h b/libspeex/filters.h
index d0689ea..df14851 100644
--- a/libspeex/filters.h
+++ b/libspeex/filters.h
@@ -62,8 +62,19 @@ void qmf_decomp(const spx_word16_t *xx, const spx_word16_t *aa, spx_word16_t *,
 void qmf_synth(const spx_word16_t *x1, const spx_word16_t *x2, const spx_word16_t *a, spx_word16_t *y, int N, int M, spx_word16_t *mem1, spx_word16_t *mem2, char *stack);
 
 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);
+
+#ifdef MERGE_FILTERS
+
+#define OVERRIDE_IIR_MEM16
+#define OVERRIDE_FIR_MEM16
+extern const spx_word16_t zeros[];
+#define iir_mem16(x, den, y, N, ord, mem, stack) filter_mem16(x, zeros, den, y,  N, ord, mem, stack)
+#define fir_mem16(x, num, y, N, ord, mem, stack) filter_mem16(x, num, zeros, y,  N, ord, mem, stack)
+
+#else /* MERGE_FILTERS */
 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);
 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);
+#endif  /* MERGE_FILTERS */
 
 /* Apply bandwidth expansion on LPC coef */
 void bw_lpc(spx_word16_t , const spx_coef_t *lpc_in, spx_coef_t *lpc_out, int order);
diff --git a/libspeex/ltp.c b/libspeex/ltp.c
index 3297313..2815587 100644
--- a/libspeex/ltp.c
+++ b/libspeex/ltp.c
@@ -78,7 +78,7 @@ spx_word32_t inner_prod(const spx_word16_t *x, const spx_word16_t *y, int len)
 
 #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)
+static void pitch_xcorr(const spx_word16_t *_x, const spx_word16_t *_y, spx_word32_t *corr, int len, int nb_pitch, char *stack)
 {
    int i,j;
    for (i=0;i<nb_pitch;i+=4)
@@ -141,7 +141,7 @@ void pitch_xcorr(const spx_word16_t *_x, const spx_word16_t *_y, spx_word32_t *c
 
 }
 #else
-void pitch_xcorr(const spx_word16_t *_x, const spx_word16_t *_y, spx_word32_t *corr, int len, int nb_pitch, char *stack)
+static void pitch_xcorr(const spx_word16_t *_x, const spx_word16_t *_y, spx_word32_t *corr, int len, int nb_pitch, char *stack)
 {
    int i;
    for (i=0;i<nb_pitch;i++)
diff --git a/libspeex/ltp.h b/libspeex/ltp.h
index a2912e2..7218ffe 100644
--- a/libspeex/ltp.h
+++ b/libspeex/ltp.h
@@ -52,7 +52,6 @@ typedef struct {
 #endif
 
 spx_word32_t inner_prod(const spx_word16_t *x, const spx_word16_t *y, int len);
-void pitch_xcorr(const spx_word16_t *_x, const spx_word16_t *_y, spx_word32_t *corr, int len, int nb_pitch, char *stack);
 
 void open_loop_nbest_pitch(spx_word16_t *sw, int start, int end, int len, int *pitch, spx_word16_t *gain, int N, char *stack);
 
-- 
cgit v1.2.3