openharmony/third_party_ffmpeg
1
0
Fork 0
mirror of https://gitee.com/openharmony/third_party_ffmpeg synced 2024-11-28 05:30:34 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

g723.1: remove unnecessary argument 'shift' from dot_product()

Browse Source 
The 'shift' argument is always 1 so there is no need to pass it
explicitly in every call.

Signed-off-by: Mans Rullgard <mans@mansr.com>
This commit is contained in:
Mans Rullgard 2012-08-10 15:41:47 +01:00
parent 8b0de73464
commit 5a43eba956
1 changed files with 11 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
libavcodec/g723_1.c
View File

@ -569,13 +569,12 @@ static void get_residual(int16_t *residual, int16_t *prev_excitation, int lag)
residual[i] = prev_excitation[offset + (i - 2) % lag];
}
static int dot_product(const int16_t *a, const int16_t *b, int length,
int shift)
static int dot_product(const int16_t *a, const int16_t *b, int length)
{
int i, sum = 0;
for (i = 0; i < length; i++) {
int64_t prod = av_clipl_int32(MUL64(a[i], b[i]) << shift);
int64_t prod = av_clipl_int32(MUL64(a[i], b[i]) << 1);
sum = av_clipl_int32(sum + prod);
}
return sum;
@ -606,7 +605,7 @@ static void gen_acb_excitation(int16_t *vector, int16_t *prev_excitation,
/* Calculate adaptive vector */
cb_ptr += subfrm.ad_cb_gain * 20;
for (i = 0; i < SUBFRAME_LEN; i++) {
sum = dot_product(residual + i, cb_ptr, PITCH_ORDER, 1);
sum = dot_product(residual + i, cb_ptr, PITCH_ORDER);
vector[i] = av_clipl_int32((sum << 1) + (1 << 15)) >> 16;
}
}
@ -635,7 +634,7 @@ static int autocorr_max(G723_1_Context *p, int offset, int *ccr_max,
limit = pitch_lag + 3;
for (i = pitch_lag - 3; i <= limit; i++) {
ccr = dot_product(buf, buf + dir * i, length, 1);
ccr = dot_product(buf, buf + dir * i, length);
if (ccr > *ccr_max) {
*ccr_max = ccr;
@ -734,17 +733,15 @@ static void comp_ppf_coeff(G723_1_Context *p, int offset, int pitch_lag,
return;
/* Compute target energy */
energy[0] = dot_product(buf, buf, SUBFRAME_LEN, 1);
energy[0] = dot_product(buf, buf, SUBFRAME_LEN);
/* Compute forward residual energy */
if (fwd_lag)
energy[2] = dot_product(buf + fwd_lag, buf + fwd_lag,
SUBFRAME_LEN, 1);
energy[2] = dot_product(buf + fwd_lag, buf + fwd_lag, SUBFRAME_LEN);
/* Compute backward residual energy */
if (back_lag)
energy[4] = dot_product(buf - back_lag, buf - back_lag,
SUBFRAME_LEN, 1);
energy[4] = dot_product(buf - back_lag, buf - back_lag, SUBFRAME_LEN);
/* Normalize and shorten */
temp1 = 0;
@ -805,15 +802,14 @@ static int comp_interp_index(G723_1_Context *p, int pitch_lag,
ccr = av_clipl_int32((int64_t)ccr + (1 << 15)) >> 16;
/* Compute target energy */
tgt_eng = dot_product(buf, buf, SUBFRAME_LEN * 2, 1);
tgt_eng = dot_product(buf, buf, SUBFRAME_LEN * 2);
*exc_eng = av_clipl_int32((int64_t)tgt_eng + (1 << 15)) >> 16;
if (ccr <= 0)
return 0;
/* Compute best energy */
best_eng = dot_product(buf - index, buf - index,
SUBFRAME_LEN * 2, 1);
best_eng = dot_product(buf - index, buf - index, SUBFRAME_LEN * 2);
best_eng = av_clipl_int32((int64_t)best_eng + (1 << 15)) >> 16;
temp = best_eng * *exc_eng >> 3;
@ -966,8 +962,8 @@ static void formant_postfilter(G723_1_Context *p, int16_t *lpc, int16_t *buf)
/* Compute auto correlation coefficients */
auto_corr[0] = dot_product(temp_vector, temp_vector + 1,
SUBFRAME_LEN - 1, 1);
auto_corr[1] = dot_product(temp_vector, temp_vector, SUBFRAME_LEN, 1);
SUBFRAME_LEN - 1);
auto_corr[1] = dot_product(temp_vector, temp_vector, SUBFRAME_LEN);
/* Compute reflection coefficient */
temp = auto_corr[1] >> 16;