Fix visual studio warnings for signed/unsigned comparison and unused variable

Author: NWilson

libspeexdsp/resample.c

@@ -670,10 +670,10 @@ static int update_filter(SpeexResamplerState *st)
       spx_uint32_t i;
       for (i=0;i<st->den_rate;i++)
       {
-         spx_int32_t j;
+         spx_uint32_t j;
          for (j=0;j<st->filt_len;j++)
          {
-            st->sinc_table[i*st->filt_len+j] = sinc(st->cutoff,((j-(spx_int32_t)st->filt_len/2+1)-((float)i)/st->den_rate), st->filt_len, quality_map[st->quality].window_func);
+            st->sinc_table[i*st->filt_len+j] = sinc(st->cutoff,(((spx_int32_t)j-(spx_int32_t)st->filt_len/2+1)-((float)i)/st->den_rate), st->filt_len, quality_map[st->quality].window_func);
          }
       }
 #ifdef FIXED_POINT
@@ -798,7 +798,6 @@ EXPORT SpeexResamplerState *speex_resampler_init(spx_uint32_t nb_channels, spx_u
 
 EXPORT SpeexResamplerState *speex_resampler_init_frac(spx_uint32_t nb_channels, spx_uint32_t ratio_num, spx_uint32_t ratio_den, spx_uint32_t in_rate, spx_uint32_t out_rate, int quality, int *err)
 {
-   spx_uint32_t i;
    SpeexResamplerState *st;
    int filter_err;
 
@@ -928,7 +927,7 @@ EXPORT int speex_resampler_process_int(SpeexResamplerState *st, spx_uint32_t cha
 EXPORT int speex_resampler_process_float(SpeexResamplerState *st, spx_uint32_t channel_index, const float *in, spx_uint32_t *in_len, float *out, spx_uint32_t *out_len)
 #endif
 {
-   int j;
+   spx_uint32_t j;
    spx_uint32_t ilen = *in_len;
    spx_uint32_t olen = *out_len;
    spx_word16_t *x = st->mem + channel_index * st->mem_alloc_size;
@@ -969,7 +968,7 @@ EXPORT int speex_resampler_process_float(SpeexResamplerState *st, spx_uint32_t c
 EXPORT int speex_resampler_process_int(SpeexResamplerState *st, spx_uint32_t channel_index, const spx_int16_t *in, spx_uint32_t *in_len, spx_int16_t *out, spx_uint32_t *out_len)
 #endif
 {
-   int j;
+   spx_uint32_t j;
    const int istride_save = st->in_stride;
    const int ostride_save = st->out_stride;
    spx_uint32_t ilen = *in_len;

libspeexdsp/resample_sse.h

@@ -39,7 +39,7 @@
 #define OVERRIDE_INNER_PRODUCT_SINGLE
 static inline float inner_product_single(const float *a, const float *b, unsigned int len)
 {
-   int i;
+   unsigned int i;
    float ret;
    __m128 sum = _mm_setzero_ps();
    for (i=0;i<len;i+=8)
@@ -55,7 +55,7 @@ static inline float inner_product_single(const float *a, const float *b, unsigne
 
 #define OVERRIDE_INTERPOLATE_PRODUCT_SINGLE
 static inline float interpolate_product_single(const float *a, const float *b, unsigned int len, const spx_uint32_t oversample, float *frac) {
-  int i;
+  unsigned int i;
   float ret;
   __m128 sum = _mm_setzero_ps();
   __m128 f = _mm_loadu_ps(frac);
@@ -77,7 +77,7 @@ static inline float interpolate_product_single(const float *a, const float *b, u
 
 static inline double inner_product_double(const float *a, const float *b, unsigned int len)
 {
-   int i;
+   unsigned int i;
    double ret;
    __m128d sum = _mm_setzero_pd();
    __m128 t;
@@ -98,7 +98,7 @@ static inline double inner_product_double(const float *a, const float *b, unsign
 
 #define OVERRIDE_INTERPOLATE_PRODUCT_DOUBLE
 static inline double interpolate_product_double(const float *a, const float *b, unsigned int len, const spx_uint32_t oversample, float *frac) {
-  int i;
+  unsigned int i;
   double ret;
   __m128d sum;
   __m128d sum1 = _mm_setzero_pd();