dcadsp: add int8x8_fmul_int32 to dsp context

It is currently declared as a macro who is set to inlinable functions,
among which a Neon and a default C implementations.

Add a DSP parameter to each inline function, unused except by the
default C implementation which calls a function from the DSP context.

On an Arrandale CPU, gain for an inlined SSE2 function vs. a call:
- Win32: 29 to 26 cycles
- Win64: 25 to 23 cycles

Signed-off-by: Janne Grunau <janne-libav@jannau.net>

1 files changed, 1 insertions, 0 deletions

diff --git a/libavcodec/dcadsp.h b/libavcodec/dcadsp.h
index ec88be71f0..0f79dd643e 100644
--- a/libavcodec/dcadsp.h
+++ b/libavcodec/dcadsp.h
@@ -31,6 +31,7 @@ typedef struct DCADSPContext {
                             int *synth_buf_offset, float synth_buf2[32],
                             const float window[512], float *samples_out,
                             float raXin[32], float scale);
+    void (*int8x8_fmul_int32)(float *dst, const int8_t *src, int scale);
 } DCADSPContext;
 
 void ff_dcadsp_init(DCADSPContext *s);