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-rw-r--r--Alc/mixer.c184
1 files changed, 69 insertions, 115 deletions
diff --git a/Alc/mixer.c b/Alc/mixer.c
index 6460e658..a4b82c98 100644
--- a/Alc/mixer.c
+++ b/Alc/mixer.c
@@ -293,6 +293,60 @@ static __inline ALfloat cos_lerp(ALfloat val1, ALfloat val2, ALint frac)
} while(0)
+#define MIX_MONO() do { \
+ switch(Resampler) \
+ { \
+ case POINT_RESAMPLER: \
+ DO_MIX_MONO(point); break; \
+ case LINEAR_RESAMPLER: \
+ DO_MIX_MONO(lerp); break; \
+ case COSINE_RESAMPLER: \
+ DO_MIX_MONO(cos_lerp); break; \
+ case RESAMPLER_MIN: \
+ case RESAMPLER_MAX: \
+ break; \
+ } \
+} while(0)
+
+#define MIX_STEREO() do { \
+ const int chans[] = { \
+ FRONT_LEFT, FRONT_RIGHT, \
+ SIDE_LEFT, SIDE_RIGHT, \
+ BACK_LEFT, BACK_RIGHT \
+ }; \
+ \
+ switch(Resampler) \
+ { \
+ case POINT_RESAMPLER: \
+ DO_MIX_STEREO(point); break; \
+ case LINEAR_RESAMPLER: \
+ DO_MIX_STEREO(lerp); break; \
+ case COSINE_RESAMPLER: \
+ DO_MIX_STEREO(cos_lerp); break; \
+ case RESAMPLER_MIN: \
+ case RESAMPLER_MAX: \
+ break; \
+ } \
+} while(0)
+
+#define MIX_MC(...) do { \
+ const int chans[] = { __VA_ARGS__ }; \
+ \
+ switch(Resampler) \
+ { \
+ case POINT_RESAMPLER: \
+ DO_MIX_MC(point); break; \
+ case LINEAR_RESAMPLER: \
+ DO_MIX_MC(lerp); break; \
+ case COSINE_RESAMPLER: \
+ DO_MIX_MC(cos_lerp); break; \
+ case RESAMPLER_MIN: \
+ case RESAMPLER_MAX: \
+ break; \
+ } \
+} while(0)
+
+
static void MixSource(ALsource *ALSource, ALCcontext *ALContext,
float (*DryBuffer)[OUTPUTCHANNELS], ALuint SamplesToDo,
ALfloat *ClickRemoval, ALfloat *PendingClicks)
@@ -440,126 +494,26 @@ static void MixSource(ALsource *ALSource, ALCcontext *ALContext,
/* Actual sample mixing loops */
if(Channels == 1) /* Mono */
- {
- switch(Resampler)
- {
- case POINT_RESAMPLER:
- DO_MIX_MONO(point); break;
- case LINEAR_RESAMPLER:
- DO_MIX_MONO(lerp); break;
- case COSINE_RESAMPLER:
- DO_MIX_MONO(cos_lerp); break;
- case RESAMPLER_MIN:
- case RESAMPLER_MAX:
- break;
- }
- }
+ MIX_MONO();
else if(Channels == 2) /* Stereo */
- {
- const int chans[] = {
- FRONT_LEFT, FRONT_RIGHT,
- SIDE_LEFT, SIDE_RIGHT,
- BACK_LEFT, BACK_RIGHT
- };
-
- switch(Resampler)
- {
- case POINT_RESAMPLER:
- DO_MIX_STEREO(point); break;
- case LINEAR_RESAMPLER:
- DO_MIX_STEREO(lerp); break;
- case COSINE_RESAMPLER:
- DO_MIX_STEREO(cos_lerp); break;
- case RESAMPLER_MIN:
- case RESAMPLER_MAX:
- break;
- }
- }
+ MIX_STEREO();
else if(Channels == 4) /* Quad */
- {
- const int chans[] = {
- FRONT_LEFT, FRONT_RIGHT,
- BACK_LEFT, BACK_RIGHT
- };
-
- switch(Resampler)
- {
- case POINT_RESAMPLER:
- DO_MIX_MC(point); break;
- case LINEAR_RESAMPLER:
- DO_MIX_MC(lerp); break;
- case COSINE_RESAMPLER:
- DO_MIX_MC(cos_lerp); break;
- case RESAMPLER_MIN:
- case RESAMPLER_MAX:
- break;
- }
- }
+ MIX_MC(FRONT_LEFT, FRONT_RIGHT,
+ BACK_LEFT, BACK_RIGHT);
else if(Channels == 6) /* 5.1 */
- {
- const int chans[] = {
- FRONT_LEFT, FRONT_RIGHT,
- FRONT_CENTER, LFE,
- BACK_LEFT, BACK_RIGHT
- };
-
- switch(Resampler)
- {
- case POINT_RESAMPLER:
- DO_MIX_MC(point); break;
- case LINEAR_RESAMPLER:
- DO_MIX_MC(lerp); break;
- case COSINE_RESAMPLER:
- DO_MIX_MC(cos_lerp); break;
- case RESAMPLER_MIN:
- case RESAMPLER_MAX:
- break;
- }
- }
+ MIX_MC(FRONT_LEFT, FRONT_RIGHT,
+ FRONT_CENTER, LFE,
+ BACK_LEFT, BACK_RIGHT);
else if(Channels == 7) /* 6.1 */
- {
- const int chans[] = {
- FRONT_LEFT, FRONT_RIGHT,
- FRONT_CENTER, LFE,
- BACK_CENTER,
- SIDE_LEFT, SIDE_RIGHT
- };
-
- switch(Resampler)
- {
- case POINT_RESAMPLER:
- DO_MIX_MC(point); break;
- case LINEAR_RESAMPLER:
- DO_MIX_MC(lerp); break;
- case COSINE_RESAMPLER:
- DO_MIX_MC(cos_lerp); break;
- case RESAMPLER_MIN:
- case RESAMPLER_MAX:
- break;
- }
- }
+ MIX_MC(FRONT_LEFT, FRONT_RIGHT,
+ FRONT_CENTER, LFE,
+ BACK_CENTER,
+ SIDE_LEFT, SIDE_RIGHT);
else if(Channels == 8) /* 7.1 */
- {
- const int chans[] = {
- FRONT_LEFT, FRONT_RIGHT,
- FRONT_CENTER, LFE,
- BACK_LEFT, BACK_RIGHT,
- SIDE_LEFT, SIDE_RIGHT
- };
-
- switch(Resampler)
- {
- case POINT_RESAMPLER:
- DO_MIX_MC(point); break;
- case LINEAR_RESAMPLER:
- DO_MIX_MC(lerp); break;
- case COSINE_RESAMPLER:
- DO_MIX_MC(cos_lerp); break;
- case RESAMPLER_MIN:
- case RESAMPLER_MAX:
- break;
- }
- }
+ MIX_MC(FRONT_LEFT, FRONT_RIGHT,
+ FRONT_CENTER, LFE,
+ BACK_LEFT, BACK_RIGHT,
+ SIDE_LEFT, SIDE_RIGHT);
else /* Unknown? */
{
while(BufferSize--)