aacenc: add SIMD optimizations for abs_pow34 and quantization

Performance improvements:

quant_bands:
with:     681 decicycles in quant_bands, 8388453 runs,    155 skips
without: 1190 decicycles in quant_bands, 8388386 runs,    222 skips
Around 42% for the function

Twoloop coder:

abs_pow34:
with/without: 7.82s/8.17s
Around 4% for the entire encoder

Both:
with/without: 7.15s/8.17s
Around 12% for the entire encoder

Fast coder:

abs_pow34:
with/without: 3.40s/3.77s
Around 10% for the entire encoder

Both:
with/without: 3.02s/3.77s
Around 20% faster for the entire encoder

Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>
Tested-by: Michael Niedermayer <michael@niedermayer.cc>
Reviewed-by: James Almer <jamrial@gmail.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/libavcodec/aacenc.c b/libavcodec/aacenc.c
index ee3cbf80b0..363ed0537b 100644
--- a/libavcodec/aacenc.c
+++ b/libavcodec/aacenc.c
@@ -1033,6 +1033,12 @@ static av_cold int aac_encode_init(AVCodecContext *avctx)
     ff_lpc_init(&s->lpc, 2*avctx->frame_size, TNS_MAX_ORDER, FF_LPC_TYPE_LEVINSON);
     s->random_state = 0x1f2e3d4c;
 
+    s->abs_pow34   = abs_pow34_v;
+    s->quant_bands = quantize_bands;
+
+    if (ARCH_X86)
+        ff_aac_dsp_init_x86(s);
+
     if (HAVE_MIPSDSP)
         ff_aac_coder_init_mips(s);