Stowage/ffmpeg
2
0
Fork 0
mirror of https://git.ffmpeg.org/ffmpeg.git synced 2025-10-31 15:50:55 +00:00
Code Issues Projects Releases Packages Wiki Activity

AAC SBR: group some writes.

Browse source 
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
This commit is contained in:
Christophe Gisquet 2012-02-28 11:20:02 +01:00 • committed by Ronald S. Bultje
parent 7e1ce6a6ac
commit ba36f14e5d
1 changed files with 6 additions and 12 deletions
Download patch file Download diff file Expand all files Collapse all files

18
libavcodec/aacsbr.c
View file

@ -1229,8 +1229,7 @@ static void sbr_hf_inverse_filter(SBRDSPContext *dsp,
(phi[1][1][0] * phi[1][1][0] + phi[1][1][1] * phi[1][1][1]) / 1.000001f;
if (!dk) {
alpha1[k][0] = 0;
alpha1[k][1] = 0;
AV_ZERO64(alpha1[k]);
} else {
float temp_real, temp_im;
temp_real = phi[0][0][0] * phi[1][1][0] -
@ -1245,8 +1244,7 @@ static void sbr_hf_inverse_filter(SBRDSPContext *dsp,
}
if (!phi[1][0][0]) {
alpha0[k][0] = 0;
alpha0[k][1] = 0;
AV_ZERO64(alpha0[k]);
} else {
float temp_real, temp_im;
temp_real = phi[0][0][0] + alpha1[k][0] * phi[1][1][0] +
@ -1260,10 +1258,8 @@ static void sbr_hf_inverse_filter(SBRDSPContext *dsp,
if (alpha1[k][0] * alpha1[k][0] + alpha1[k][1] * alpha1[k][1] >= 16.0f ||
alpha0[k][0] * alpha0[k][0] + alpha0[k][1] * alpha0[k][1] >= 16.0f) {
alpha1[k][0] = 0;
alpha1[k][1] = 0;
alpha0[k][0] = 0;
alpha0[k][1] = 0;
AV_ZERO64(alpha0[k]);
AV_ZERO64(alpha1[k]);
}
}
}
@ -1299,14 +1295,12 @@ static int sbr_lf_gen(AACContext *ac, SpectralBandReplication *sbr,
memset(X_low, 0, 32*sizeof(*X_low));
for (k = 0; k < sbr->kx[1]; k++) {
for (i = t_HFGen; i < i_f + t_HFGen; i++) {
X_low[k][i][0] = W[1][i - t_HFGen][k][0];
X_low[k][i][1] = W[1][i - t_HFGen][k][1];
AV_COPY64(X_low[k][i], W[1][i - t_HFGen][k]);
}
}
for (k = 0; k < sbr->kx[0]; k++) {
for (i = 0; i < t_HFGen; i++) {
X_low[k][i][0] = W[0][i + i_f - t_HFGen][k][0];
X_low[k][i][1] = W[0][i + i_f - t_HFGen][k][1];
AV_COPY64(X_low[k][i], W[0][i + i_f - t_HFGen][k]);
}
}
return 0;