[FFmpeg-cvslog] avcodec/aacps: move checks for valid length outside the stereo_interpolate dsp function

[James Almer]

ffmpeg | branch: master | James Almer <jamrial at gmail.com> | Sat Jun  3 14:01:46 2017 -0300| [623d217ed1ba168355b1887ef9ca02402b40eead] | committer: James Almer

avcodec/aacps: move checks for valid length outside the stereo_interpolate dsp function

Signed-off-by: James Almer <jamrial at gmail.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=623d217ed1ba168355b1887ef9ca02402b40eead
---

 libavcodec/aacps.c          | 7 ++++---
 libavcodec/x86/aacpsdsp.asm | 6 ------
 2 files changed, 4 insertions(+), 9 deletions(-)

diff --git a/libavcodec/aacps.c b/libavcodec/aacps.c
index 29de8a5ea7..473da7bd43 100644
--- a/libavcodec/aacps.c
+++ b/libavcodec/aacps.c
@@ -979,9 +979,10 @@ static void stereo_processing(PSContext *ps, INTFLOAT (*l)[32][2], INTFLOAT (*r)
                 h_step[1][2] = AAC_MSUB31_V3(H21[1][e+1][b], h[1][2], width);
                 h_step[1][3] = AAC_MSUB31_V3(H22[1][e+1][b], h[1][3], width);
             }
-            ps->dsp.stereo_interpolate[!PS_BASELINE && ps->enable_ipdopd](
-                l[k] + 1 + start, r[k] + 1 + start,
-                h, h_step, stop - start);
+            if (stop - start)
+                ps->dsp.stereo_interpolate[!PS_BASELINE && ps->enable_ipdopd](
+                    l[k] + 1 + start, r[k] + 1 + start,
+                    h, h_step, stop - start);
         }
     }
 }
diff --git a/libavcodec/x86/aacpsdsp.asm b/libavcodec/x86/aacpsdsp.asm
index f7f22f274c..67d3bd4e07 100644
--- a/libavcodec/x86/aacpsdsp.asm
+++ b/libavcodec/x86/aacpsdsp.asm
@@ -94,8 +94,6 @@ INIT_XMM sse3
 cglobal ps_stereo_interpolate, 5, 5, 6, l, r, h, h_step, n
     movaps   m0, [hq]
     movaps   m1, [h_stepq]
-    cmp      nd, 0
-    jle .ret
     unpcklps m4, m0, m0
     unpckhps m0, m0
     unpcklps m5, m1, m1
@@ -118,7 +116,6 @@ align 16
     movhps [rq+nq], m2
     add      nq, 8
     jl .loop
-.ret:
     REP_RET
 
 ;***************************************************************************
@@ -128,8 +125,6 @@ align 16
 ;***************************************************************************
 INIT_XMM sse3
 cglobal ps_stereo_interpolate_ipdopd, 5, 5, 10, l, r, h, h_step, n
-    cmp      nd, 0
-    jle .ret
     movaps   m0, [hq]
     movaps   m1, [hq+mmsize]
 %if ARCH_X86_64
@@ -169,7 +164,6 @@ align 16
     movhps [rq+nq], m2
     add      nq, 8
     jl .loop
-.ret:
     REP_RET
 
 ;*******************************************************************