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Add no_repeat_mask option, so that single-pulse vectors can also be

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expressed in a AMRFixed structure and handled by ff_set_fixed_vector().

Originally committed as revision 21528 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Ronald S. Bultje 2010-01-29 16:49:06 +00:00
parent 4a27f326c5
commit 5e4e9042c4
2 changed files with 6 additions and 4 deletions
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9
libavcodec/acelp_vectors.c
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@ -164,6 +164,7 @@ void ff_decode_10_pulses_35bits(const int16_t *fixed_index,
int i;
int mask = (1 << bits) - 1;
fixed_sparse->no_repeat_mask = 0;
fixed_sparse->n = 2 * half_pulse_count;
for (i = 0; i < half_pulse_count; i++) {
const int pos1 = gray_decode[fixed_index[2*i+1] & mask] + i;
@ -243,14 +244,14 @@ void ff_set_fixed_vector(float *out, const AMRFixed *in, float scale, int size)
int i;
for (i=0; i < in->n; i++) {
int x = in->x[i];
int x = in->x[i], repeats = !((in->no_repeat_mask >> i) & 1);
float y = in->y[i] * scale;
do {
out[x] += y;
y *= in->pitch_fac;
x += in->pitch_lag;
} while (x < size);
} while (x < size && repeats);
}
}
@ -259,11 +260,11 @@ void ff_clear_fixed_vector(float *out, const AMRFixed *in, int size)
int i;
for (i=0; i < in->n; i++) {
int x = in->x[i];
int x = in->x[i], repeats = !((in->no_repeat_mask >> i) & 1);
do {
out[x] = 0.0;
x += in->pitch_lag;
} while (x < size);
} while (x < size && repeats);
}
}

1
libavcodec/acelp_vectors.h
View File

@ -30,6 +30,7 @@ typedef struct {
int n;
int x[10];
float y[10];
int no_repeat_mask;
int pitch_lag;
float pitch_fac;
} AMRFixed;