diff options
Diffstat (limited to 'Alc/mixer.c')
| -rw-r--r-- | Alc/mixer.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/Alc/mixer.c b/Alc/mixer.c index dedcb5b9..27d8cbcf 100644 --- a/Alc/mixer.c +++ b/Alc/mixer.c @@ -46,6 +46,31 @@ extern inline void InitiatePositionArrays(ALuint frac, ALuint increment, ALuint alignas(16) union ResamplerCoeffs ResampleCoeffs; +enum Resampler { + PointResampler, + LinearResampler, + FIR4Resampler, + FIR6Resampler, + + ResamplerMax, +}; + +static enum Resampler DefaultResampler = LinearResampler; + +static const ALsizei ResamplerPadding[ResamplerMax] = { + 0, /* Point */ + 1, /* Linear */ + 2, /* FIR4 */ + 3, /* FIR6 */ +}; +static const ALsizei ResamplerPrePadding[ResamplerMax] = { + 0, /* Point */ + 0, /* Linear */ + 1, /* FIR4 */ + 2, /* FIR6 */ +}; + + static HrtfMixerFunc MixHrtfSamples = MixHrtf_C; static MixerFunc MixSamples = Mix_C; static ResamplerFunc ResampleSamples = Resample_point32_C; @@ -127,7 +152,35 @@ static float lanc(float r, float x) void aluInitMixer(void) { + const char *str; ALuint i; + + if(ConfigValueStr(NULL, NULL, "resampler", &str)) + { + if(strcasecmp(str, "point") == 0 || strcasecmp(str, "none") == 0) + DefaultResampler = PointResampler; + else if(strcasecmp(str, "linear") == 0) + DefaultResampler = LinearResampler; + else if(strcasecmp(str, "sinc4") == 0) + DefaultResampler = FIR4Resampler; + else if(strcasecmp(str, "sinc6") == 0) + DefaultResampler = FIR6Resampler; + else if(strcasecmp(str, "cubic") == 0) + { + WARN("Resampler option \"cubic\" is deprecated, using sinc4\n"); + DefaultResampler = FIR4Resampler; + } + else + { + char *end; + long n = strtol(str, &end, 0); + if(*end == '\0' && (n == PointResampler || n == LinearResampler || n == FIR4Resampler)) + DefaultResampler = n; + else + WARN("Invalid resampler: %s\n", str); + } + } + if(DefaultResampler == FIR6Resampler) for(i = 0;i < FRACTIONONE;i++) { |