arm: Add VFP-accelerated version of dca_lfe_fir

               Before           After
               Mean    StdDev   Mean    StdDev  Change
This function    868.2  33.5      436.0  27.0   +99.1%
Overall        15973.0 223.2    15577.5  83.2    +2.5%

Signed-off-by: Martin Storsjö <martin@martin.st>

1 files changed, 4 insertions, 0 deletions

diff --git a/libavcodec/arm/dcadsp_init_arm.c b/libavcodec/arm/dcadsp_init_arm.c
index f0375c9710..824b909aae 100644
--- a/libavcodec/arm/dcadsp_init_arm.c
+++ b/libavcodec/arm/dcadsp_init_arm.c
@@ -24,6 +24,8 @@
 #include "libavutil/attributes.h"
 #include "libavcodec/dcadsp.h"
 
+void ff_dca_lfe_fir_vfp(float *out, const float *in, const float *coefs,
+                        int decifactor, float scale);
 void ff_dca_lfe_fir_neon(float *out, const float *in, const float *coefs,
                          int decifactor, float scale);
 
@@ -31,6 +33,8 @@ av_cold void ff_dcadsp_init_arm(DCADSPContext *s)
 {
     int cpu_flags = av_get_cpu_flags();
 
+    if (have_vfp(cpu_flags) && !have_vfpv3(cpu_flags))
+        s->lfe_fir = ff_dca_lfe_fir_vfp;
     if (have_neon(cpu_flags))
         s->lfe_fir = ff_dca_lfe_fir_neon;
 }