diff options
| author | Sampo Savolainen <v2@iki.fi> | 2007-03-13 22:42:34 +0000 |
|---|---|---|
| committer | Sampo Savolainen <v2@iki.fi> | 2007-03-13 22:42:34 +0000 |
| commit | 75d2f51193f6fd25881a9c766db9078f3b68d80e (patch) | |
| tree | 2fd7df7152970a134e291bf307f69158ac79bdf8 /libs/ardour/mix.cc | |
| parent | 29f4d8b52c937b984dfba80cd912a20ee6b526ce (diff) | |
Added a xmmintrin.h based SSE function find_peaks(). Needs polishing as
this commit breaks the build system for i386 builds with dynamic SSE
enabled.
git-svn-id: svn://localhost/ardour2/trunk@1586 d708f5d6-7413-0410-9779-e7cbd77b26cf
Diffstat (limited to 'libs/ardour/mix.cc')
| -rw-r--r-- | libs/ardour/mix.cc | 39 |
1 files changed, 38 insertions, 1 deletions
diff --git a/libs/ardour/mix.cc b/libs/ardour/mix.cc index 63ccc8b7ea..e2096178dd 100644 --- a/libs/ardour/mix.cc +++ b/libs/ardour/mix.cc @@ -24,7 +24,6 @@ #include <stdint.h> #if defined (ARCH_X86) && defined (BUILD_SSE_OPTIMIZATIONS) - // Debug wrappers float @@ -90,6 +89,25 @@ compute_peak (ARDOUR::Sample *buf, nframes_t nsamples, float current) return current; } +float +find_peaks (ARDOUR::Sample *buf, nframes_t nframes, float *min, float *max) +{ + long i; + float a, b; + + a = *max; + b = *min; + + for (i = 0; i < nframes; i++) + { + a = fmax (buf[i], a); + b = fmin (buf[i], b); + } + + *max = a; + *min = b; +} + void apply_gain_to_buffer (ARDOUR::Sample *buf, nframes_t nframes, float gain) { @@ -124,6 +142,25 @@ veclib_compute_peak (ARDOUR::Sample *buf, nframes_t nsamples, float current) return f_max(current, tmpmax); } +float +veclib_find_peaks (ARDOUR::Sample *buf, nframes_t nframes, float *min, float *max) +{ + // TODO: someone with veclib skills needs to write this one + long i; + float a, b; + + a = *max; + b = *min; + + for (i = 0; i < nframes; i++) + { + a = fmax (buf[i], a); + b = fmin (buf[i], b); + } + + *max = a; + *min = b; +} void veclib_apply_gain_to_buffer (ARDOUR::Sample *buf, nframes_t nframes, float gain) { |