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equalizer: fix filter history usage. Fixes #597397

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The process functions where overwriting the history for each channel. Also pull
some static things out of the inner loop.
This commit is contained in:
Stefan Kost 2009-10-05 22:43:11 +03:00
parent 0040d01265
commit 7b6e594b69
1 changed files with 15 additions and 17 deletions
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32
gst/equalizer/gstiirequalizer.c
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@ -577,17 +577,16 @@ gst_iir_equ_process_ ## TYPE (GstIirEqualizer *equ, guint8 *data, \
guint size, guint channels) \
{ \
guint frames = size / channels / sizeof (TYPE); \
guint i, c, f; \
guint i, c, f, nf = equ->freq_band_count; \
BIG_TYPE cur; \
GstIirEqualizerBand **filters = equ->bands; \
\
for (i = 0; i < frames; i++) { \
SecondOrderHistory ## TYPE *history = equ->history; \
for (c = 0; c < channels; c++) { \
SecondOrderHistory ## TYPE *history = equ->history; \
cur = *((TYPE *) data); \
for (f = 0; f < equ->freq_band_count; f++) { \
GstIirEqualizerBand *filter = equ->bands[f]; \
\
cur = one_step_ ## TYPE (filter, history, cur); \
for (f = 0; f < nf; f++) { \
cur = one_step_ ## TYPE (filters[f], history, cur); \
history++; \
} \
cur = CLAMP (cur, MIN_VAL, MAX_VAL); \
@ -597,18 +596,18 @@ guint size, guint channels) \
} \
}
#define CREATE_OPTIMIZED_FUNCTIONS(TYPE) \
#define CREATE_OPTIMIZED_FUNCTIONS(TYPE) \
typedef struct { \
TYPE x1, x2; /* history of input values for a filter */ \
TYPE y1, y2; /* history of output values for a filter */ \
} SecondOrderHistory ## TYPE; \
\
static inline TYPE \
static inline TYPE \
one_step_ ## TYPE (GstIirEqualizerBand *filter, \
SecondOrderHistory ## TYPE *history, TYPE input) \
SecondOrderHistory ## TYPE *history, TYPE input) \
{ \
/* calculate output */ \
TYPE output = filter->a0 * input + filter->a1 * history->x1 + \
TYPE output = filter->a0 * input + filter->a1 * history->x1 + \
filter->a2 * history->x2 + filter->b1 * history->y1 + \
filter->b2 * history->y2; \
/* update history */ \
@ -628,17 +627,16 @@ gst_iir_equ_process_ ## TYPE (GstIirEqualizer *equ, guint8 *data, \
guint size, guint channels) \
{ \
guint frames = size / channels / sizeof (TYPE); \
guint i, c, f; \
TYPE cur; \
guint i, c, f, nf = equ->freq_band_count; \
TYPE cur; \
GstIirEqualizerBand **filters = equ->bands; \
\
for (i = 0; i < frames; i++) { \
SecondOrderHistory ## TYPE *history = equ->history; \
for (c = 0; c < channels; c++) { \
SecondOrderHistory ## TYPE *history = equ->history; \
cur = *((TYPE *) data); \
for (f = 0; f < equ->freq_band_count; f++) { \
GstIirEqualizerBand *filter = equ->bands[f]; \
\
cur = one_step_ ## TYPE (filter, history, cur); \
for (f = 0; f < nf; f++) { \
cur = one_step_ ## TYPE (filters[f], history, cur); \
history++; \
} \
*((TYPE *) data) = (TYPE) cur; \