diff options
| author | Luca Barbato <lu_zero@gentoo.org> | 2017-03-14 09:15:30 +0000 |
|---|---|---|
| committer | Luca Barbato <lu_zero@gentoo.org> | 2017-03-21 12:08:52 +0100 |
| commit | a46a4f722d2fac07c57990f0f548777622599f59 (patch) | |
| tree | 3ef37daa8f85916161b092dce9ab93d3fc66e3af /libavcodec | |
| parent | e245d4f45ca5e2b97daef5944d63323c07d545bc (diff) | |
| download | ffmpeg-a46a4f722d2fac07c57990f0f548777622599f59.tar.gz | |
dca: Refactor dca_filter_channels() a little
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/dcadec.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/libavcodec/dcadec.c b/libavcodec/dcadec.c index af26dceafd..fa2a2400fe 100644 --- a/libavcodec/dcadec.c +++ b/libavcodec/dcadec.c @@ -947,15 +947,16 @@ static int dca_filter_channels(DCAContext *s, int block_index, int upsample) /* 64 subbands QMF */ for (k = 0; k < s->audio_header.prim_channels; k++) { + int channel = s->channel_order_tab[k]; int32_t (*subband_samples)[SAMPLES_PER_SUBBAND] = s->dca_chan[k].subband_samples[block_index]; s->fmt_conv.int32_to_float(samples[0], subband_samples[0], DCA_SUBBANDS_X96K * SAMPLES_PER_SUBBAND); - if (s->channel_order_tab[k] >= 0) + if (channel >= 0) qmf_64_subbands(s, k, samples, - s->samples_chanptr[s->channel_order_tab[k]], + s->samples_chanptr[channel], /* Upsampling needs a factor 2 here. */ M_SQRT2 / 32768.0); } @@ -964,15 +965,16 @@ static int dca_filter_channels(DCAContext *s, int block_index, int upsample) LOCAL_ALIGNED(32, float, samples, [DCA_SUBBANDS], [SAMPLES_PER_SUBBAND]); for (k = 0; k < s->audio_header.prim_channels; k++) { + int channel = s->channel_order_tab[k]; int32_t (*subband_samples)[SAMPLES_PER_SUBBAND] = s->dca_chan[k].subband_samples[block_index]; s->fmt_conv.int32_to_float(samples[0], subband_samples[0], DCA_SUBBANDS * SAMPLES_PER_SUBBAND); - if (s->channel_order_tab[k] >= 0) + if (channel >= 0) qmf_32_subbands(s, k, samples, - s->samples_chanptr[s->channel_order_tab[k]], + s->samples_chanptr[channel], M_SQRT1_2 / 32768.0); } } |