Optimization of AMR NB and WB decoders for MIPS

AMR NB and WB decoders are optimized for MIPS architecture.
Appropriate Makefiles are changed accordingly.

Cnfigure script is changed in order to support optimizations.
 Optimizations are enabled by default when compiling is done for
  mips architecture.
 Appropriate cflags are automatically set.
 Support for several mips CPUs is added in configure script.

New ffmpeg options are added for disabling optimizations.

The FFMPEG option --disable-mipsfpu disables MIPS floating point
 optimizations.
The FFMPEG option --disable-mips32r2 disables MIPS32R2
 optimizations.
The FFMPEG option --disable-mipsdspr1 disables MIPS DSP ASE R1
 optimizations.
The FFMPEG option --disable-mipsdspr2 disables MIPS DSP ASE R2
 optimizations.

Signed-off-by: Nedeljko Babic <nbabic@mips.com>
Reviewed-by: Vitor Sessak <vitor1001@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

1 files changed, 9 insertions, 0 deletions

diff --git a/libavcodec/celp_filters.c b/libavcodec/celp_filters.c
index 04ede491ac..8047a78452 100644
--- a/libavcodec/celp_filters.c
+++ b/libavcodec/celp_filters.c
@@ -205,3 +205,12 @@ void ff_celp_lp_zero_synthesis_filterf(float *out, const float *filter_coeffs,
             out[n] += filter_coeffs[i-1] * in[n-i];
     }
 }
+
+void ff_celp_filter_init(CELPFContext *c)
+{
+    c->celp_lp_synthesis_filterf        = ff_celp_lp_synthesis_filterf;
+    c->celp_lp_zero_synthesis_filterf   = ff_celp_lp_zero_synthesis_filterf;
+
+    if(HAVE_MIPSFPU)
+        ff_celp_filter_init_mips(c);
+}