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authorChristophe Gisquet <christophe.gisquet@gmail.com>2012-05-11 11:17:36 +0200
committerJanne Grunau <janne-libav@jannau.net>2014-02-07 22:51:59 +0100
commit2bd44cb705340c4f7bd7e459a1efed5074bf45fc (patch)
tree6b628e195347f7ac49f71e2882cd57a1a5c1fed4 /libavcodec/dcadsp.c
parente3fec3f095ab5ea08ee662942d98526aaf5e3635 (diff)
downloadffmpeg-2bd44cb705340c4f7bd7e459a1efed5074bf45fc.tar.gz
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>
Diffstat (limited to 'libavcodec/dcadsp.c')
-rw-r--r--libavcodec/dcadsp.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/libavcodec/dcadsp.c b/libavcodec/dcadsp.c
index 57d716e402..b98486422b 100644
--- a/libavcodec/dcadsp.c
+++ b/libavcodec/dcadsp.c
@@ -24,6 +24,14 @@
#include "libavutil/intreadwrite.h"
#include "dcadsp.h"
+static void int8x8_fmul_int32_c(float *dst, const int8_t *src, int scale)
+{
+ float fscale = scale / 16.0;
+ int i;
+ for (i = 0; i < 8; i++)
+ dst[i] = src[i] * fscale;
+}
+
static void dca_lfe_fir_c(float *out, const float *in, const float *coefs,
int decifactor, float scale)
{
@@ -78,5 +86,6 @@ av_cold void ff_dcadsp_init(DCADSPContext *s)
{
s->lfe_fir = dca_lfe_fir_c;
s->qmf_32_subbands = dca_qmf_32_subbands;
+ s->int8x8_fmul_int32 = int8x8_fmul_int32_c;
if (ARCH_ARM) ff_dcadsp_init_arm(s);
}