media/libspeex_resampler/04_hugemem.patch

   1 diff --git a/src/resample.c b/src/resample.c
   2 --- a/src/resample.c
   3 +++ b/src/resample.c
   4 @@ -56,16 +56,18 @@
   5     (e.g. 2/3), and get rid of the rounding operations in the inner loop.
   6     The latter both reduces CPU time and makes the algorithm more SIMD-friendly.
   7  */
   8
   9  #ifdef HAVE_CONFIG_H
  10  #include "config.h"
  11  #endif
  12
  13 +#define RESAMPLE_HUGEMEM 1
  14 +
  15  #ifdef OUTSIDE_SPEEX
  16  #include <stdlib.h>
  17  static void *speex_alloc(int size) {return calloc(size,1);}
  18  static void *speex_realloc(void *ptr, int size) {return realloc(ptr, size);}
  19  static void speex_free(void *ptr) {free(ptr);}
  20  #ifndef EXPORT
  21  #define EXPORT
  22  #endif
  23 @@ -633,25 +645,26 @@ static int update_filter(SpeexResamplerS
  24           st->oversample >>= 1;
  25        if (st->oversample < 1)
  26           st->oversample = 1;
  27     } else {
  28        /* up-sampling */
  29        st->cutoff = quality_map[st->quality].upsample_bandwidth;
  30     }
  31
  32 -#ifdef RESAMPLE_FULL_SINC_TABLE
  33 -   use_direct = 1;
  34 -   if (INT_MAX/sizeof(spx_word16_t)/st->den_rate < st->filt_len)
  35 -      goto fail;
  36 -#else
  37 -   /* Choose the resampling type that requires the least amount of memory */
  38 -   use_direct = st->filt_len*st->den_rate <= st->filt_len*st->oversample+8
  39 -                && INT_MAX/sizeof(spx_word16_t)/st->den_rate >= st->filt_len;
  40 +   use_direct =
  41 +#ifdef RESAMPLE_HUGEMEM
  42 +      /* Choose the direct resampler, even with higher initialization costs,
  43 +         when resampling any multiple of 100 to 44100. */
  44 +      st->den_rate <= 441
  45 +#else
  46 +      /* Choose the resampling type that requires the least amount of memory */
  47 +      st->filt_len*st->den_rate <= st->filt_len*st->oversample+8
  48  #endif
  49 +                && INT_MAX/sizeof(spx_word16_t)/st->den_rate >= st->filt_len;
  50     if (use_direct)
  51     {
  52        min_sinc_table_length = st->filt_len*st->den_rate;
  53     } else {
  54        if ((INT_MAX/sizeof(spx_word16_t)-8)/st->oversample < st->filt_len)
  55           goto fail;
  56
  57        min_sinc_table_length = st->filt_len*st->oversample+8;