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| author | Mans Rullgard <mans@mansr.com> | 2011-07-15 22:38:10 +0100 |
|---|---|---|
| committer | Mans Rullgard <mans@mansr.com> | 2011-07-15 22:41:52 +0100 |
| commit | e5902d60ce8f7cf10b6e87a57eec536b316261a3 (patch) | |
| tree | e52bb7d027b9aeb44b1606de6fe68a2eb5e464be | |
| parent | d3bb71914bcdf83311d70cb1e235cdd85527e5cf (diff) | |
| download | ffmpeg-e5902d60ce8f7cf10b6e87a57eec536b316261a3.tar.gz | |
aacps: skip some memcpy() if src and dst would be equal
Signed-off-by: Mans Rullgard <mans@mansr.com>
| -rw-r--r-- | libavcodec/aacps.c | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/libavcodec/aacps.c b/libavcodec/aacps.c index 03d0beabdd..93bdd91dea 100644 --- a/libavcodec/aacps.c +++ b/libavcodec/aacps.c @@ -813,14 +813,17 @@ static void stereo_processing(PSContext *ps, float (*l)[32][2], float (*r)[32][2 const float (*H_LUT)[8][4] = (PS_BASELINE || ps->icc_mode < 3) ? HA : HB; //Remapping - memcpy(H11[0][0], H11[0][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H11[0][0][0])); - memcpy(H11[1][0], H11[1][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H11[1][0][0])); - memcpy(H12[0][0], H12[0][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H12[0][0][0])); - memcpy(H12[1][0], H12[1][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H12[1][0][0])); - memcpy(H21[0][0], H21[0][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H21[0][0][0])); - memcpy(H21[1][0], H21[1][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H21[1][0][0])); - memcpy(H22[0][0], H22[0][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H22[0][0][0])); - memcpy(H22[1][0], H22[1][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H22[1][0][0])); + if (ps->num_env_old) { + memcpy(H11[0][0], H11[0][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H11[0][0][0])); + memcpy(H11[1][0], H11[1][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H11[1][0][0])); + memcpy(H12[0][0], H12[0][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H12[0][0][0])); + memcpy(H12[1][0], H12[1][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H12[1][0][0])); + memcpy(H21[0][0], H21[0][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H21[0][0][0])); + memcpy(H21[1][0], H21[1][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H21[1][0][0])); + memcpy(H22[0][0], H22[0][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H22[0][0][0])); + memcpy(H22[1][0], H22[1][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H22[1][0][0])); + } + if (is34) { remap34(&iid_mapped, ps->iid_par, ps->nr_iid_par, ps->num_env, 1); remap34(&icc_mapped, ps->icc_par, ps->nr_icc_par, ps->num_env, 1); |