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aacdec: Convert some loop copies into memcpy()s. 

Signed-off-by: Mans Rullgard <mans@mansr.com>
(cherry picked from commit e5c82df80e)
This commit is contained in:
Alex Converse 2011-01-28 06:13:50 +00:00 committed by Michael Niedermayer
parent 6219b67e84
commit 79615a3e50
1 changed files with 3 additions and 6 deletions
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9
libavcodec/aacdec.c
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@ -1723,8 +1723,7 @@ static void imdct_and_windowing(AACContext *ac, SingleChannelElement *sce)
(ics->window_sequence[0] == ONLY_LONG_SEQUENCE || ics->window_sequence[0] == LONG_START_SEQUENCE)) {
ac->dsp.vector_fmul_window( out, saved, buf, lwindow_prev, 0, 512);
} else {
for (i = 0; i < 448; i++)
out[i] = saved[i];
memcpy( out, saved, 448 * sizeof(float));
if (ics->window_sequence[0] == EIGHT_SHORT_SEQUENCE) {
ac->dsp.vector_fmul_window(out + 448 + 0*128, saved + 448, buf + 0*128, swindow_prev, 0, 64);
@ -1735,15 +1734,13 @@ static void imdct_and_windowing(AACContext *ac, SingleChannelElement *sce)
memcpy( out + 448 + 4*128, temp, 64 * sizeof(float));
} else {
ac->dsp.vector_fmul_window(out + 448, saved + 448, buf, swindow_prev, 0, 64);
for (i = 576; i < 1024; i++)
out[i] = buf[i-512];
memcpy( out + 576, buf + 64, 448 * sizeof(float));
}
}
// buffer update
if (ics->window_sequence[0] == EIGHT_SHORT_SEQUENCE) {
for (i = 0; i < 64; i++)
saved[i] = temp[64 + i];
memcpy( saved, temp + 64, 64 * sizeof(float));
ac->dsp.vector_fmul_window(saved + 64, buf + 4*128 + 64, buf + 5*128, swindow, 0, 64);
ac->dsp.vector_fmul_window(saved + 192, buf + 5*128 + 64, buf + 6*128, swindow, 0, 64);
ac->dsp.vector_fmul_window(saved + 320, buf + 6*128 + 64, buf + 7*128, swindow, 0, 64);