From 8b8614601d76d320f702081f65e990d789da4c19 Mon Sep 17 00:00:00 2001 From: Sam Lantinga Date: Tue, 26 Aug 2008 02:26:18 +0000 Subject: [PATCH] Fixed compile errors for audio resampling. I'm not sure how this got missed... --- include/SDL_audio.h | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/include/SDL_audio.h b/include/SDL_audio.h index 64c356111..c5169f0f7 100644 --- a/include/SDL_audio.h +++ b/include/SDL_audio.h @@ -142,10 +142,15 @@ typedef struct SDL_AudioCVT SDL_AudioFormat dst_format; /* Target audio format */ double rate_incr; /* Rate conversion increment */ Uint8 *buf; /* Buffer to hold entire audio data */ + Uint8 *coeff; /* Filter coefficients: either big windowed sinc filter, or 6 IIR lowpass coefficients */ + Uint8 *state_buf; /* Sample history for either the FIR or IIR filter. For IIR filter, first two elements are X, second two are Y, and state_pos toggles the order */ + int state_pos; /* Position in the state */ + int len_sinc; /* Length of windowed sinc filter, in appropriate units (not necessarily bytes) */ int len; /* Length of original audio buffer */ int len_cvt; /* Length of converted audio buffer */ int len_mult; /* buffer must be len*len_mult big */ - double len_ratio; /* Given len, final size is len*len_ratio */ + int len_div; /* destination length = len_mult / len_div * src length */ + double len_ratio; /* Given len, final size is len*len_ratio ( len_ratio = len_mult / len_div ) */ SDL_AudioFilter filters[10]; /* Filter list */ int filter_index; /* Current audio conversion function */ } SDL_AudioCVT;