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| author | Young Han Lee <cpumaker@gmail.com> | 2011-02-19 09:32:24 +0900 |
|---|---|---|
| committer | Alex Converse <alex.converse@gmail.com> | 2011-02-19 00:57:09 -0800 |
| commit | 9707f84fa73c23352937fc7e4e0a85eaf3135cbc (patch) | |
| tree | 9462267e17c937bbe7ce5e2b1d1cce66f56da14a /libavcodec/aacdec.c | |
| parent | 902685b8abf4e2089802528a32a50f3c68033fda (diff) | |
| download | ffmpeg-9707f84fa73c23352937fc7e4e0a85eaf3135cbc.tar.gz | |
aacdec: dsputilize the scalar multiplication in intensity stereo
Diffstat (limited to 'libavcodec/aacdec.c')
| -rw-r--r-- | libavcodec/aacdec.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/libavcodec/aacdec.c b/libavcodec/aacdec.c index ee5affebed..a362d6ad4e 100644 --- a/libavcodec/aacdec.c +++ b/libavcodec/aacdec.c @@ -1386,13 +1386,13 @@ static void apply_mid_side_stereo(AACContext *ac, ChannelElement *cpe) * [1] mask is decoded from bitstream; [2] mask is all 1s; * [3] reserved for scalable AAC */ -static void apply_intensity_stereo(ChannelElement *cpe, int ms_present) +static void apply_intensity_stereo(AACContext *ac, ChannelElement *cpe, int ms_present) { const IndividualChannelStream *ics = &cpe->ch[1].ics; SingleChannelElement *sce1 = &cpe->ch[1]; float *coef0 = cpe->ch[0].coeffs, *coef1 = cpe->ch[1].coeffs; const uint16_t *offsets = ics->swb_offset; - int g, group, i, k, idx = 0; + int g, group, i, idx = 0; int c; float scale; for (g = 0; g < ics->num_window_groups; g++) { @@ -1405,8 +1405,10 @@ static void apply_intensity_stereo(ChannelElement *cpe, int ms_present) c *= 1 - 2 * cpe->ms_mask[idx]; scale = c * sce1->sf[idx]; for (group = 0; group < ics->group_len[g]; group++) - for (k = offsets[i]; k < offsets[i + 1]; k++) - coef1[group * 128 + k] = scale * coef0[group * 128 + k]; + ac->dsp.vector_fmul_scalar(coef1 + group * 128 + offsets[i], + coef0 + group * 128 + offsets[i], + scale, + offsets[i + 1] - offsets[i]); } } else { int bt_run_end = sce1->band_type_run_end[idx]; @@ -1459,7 +1461,7 @@ static int decode_cpe(AACContext *ac, GetBitContext *gb, ChannelElement *cpe) } } - apply_intensity_stereo(cpe, ms_present); + apply_intensity_stereo(ac, cpe, ms_present); return 0; } |