[FFmpeg-cvslog] r22414 - trunk/libavcodec/wmadec.c
cehoyos
subversion
Wed Mar 10 00:35:57 CET 2010
Author: cehoyos
Date: Wed Mar 10 00:35:57 2010
New Revision: 22414
Log:
SIMD optimization using float_to_int16_interleave.
Patch by Zhou Zongyi, zhouzy A os D pku D edu D cn
Modified:
trunk/libavcodec/wmadec.c
Modified: trunk/libavcodec/wmadec.c
==============================================================================
--- trunk/libavcodec/wmadec.c Tue Mar 9 22:50:10 2010 (r22413)
+++ trunk/libavcodec/wmadec.c Wed Mar 10 00:35:57 2010 (r22414)
@@ -790,6 +790,7 @@ static int wma_decode_frame(WMACodecCont
/* convert frame to integer */
n = s->frame_len;
incr = s->nb_channels;
+ if (s->dsp.float_to_int16_interleave == ff_float_to_int16_interleave_c) {
for(ch = 0; ch < s->nb_channels; ch++) {
ptr = samples + ch;
iptr = s->frame_out[ch];
@@ -802,6 +803,16 @@ static int wma_decode_frame(WMACodecCont
memmove(&s->frame_out[ch][0], &s->frame_out[ch][s->frame_len],
s->frame_len * sizeof(float));
}
+ } else {
+ float *output[MAX_CHANNELS];
+ for (ch = 0; ch < MAX_CHANNELS; ch++)
+ output[ch] = s->frame_out[ch];
+ s->dsp.float_to_int16_interleave(samples, (const float **)output, n, incr);
+ for(ch = 0; ch < incr; ch++) {
+ /* prepare for next block */
+ memmove(&s->frame_out[ch][0], &s->frame_out[ch][n], n * sizeof(float));
+ }
+ }
#ifdef TRACE
dump_shorts(s, "samples", samples, n * s->nb_channels);
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