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opus_pvq: use function pointers for recursion

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Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>
This commit is contained in:
Rostislav Pehlivanov 2017-04-27 05:50:39 +01:00
parent 453f8ea242
commit f7542d7e35
1 changed files with 25 additions and 37 deletions
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62
libavcodec/opus_pvq.c
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@ -477,6 +477,14 @@ static void celt_stereo_ms_decouple(float *X, float *Y, int N)
}
}
#define QUANT_FN(name) uint32_t (*name)(CeltFrame *f, OpusRangeCoder *rc, \
const int band, float *X, float *Y, \
int N, int b, uint32_t blocks, \
float *lowband, int duration, \
float *lowband_out, int level, \
float gain, float *lowband_scratch, \
int fill)
static av_always_inline uint32_t quant_band_template(CeltFrame *f, OpusRangeCoder *rc, const int band,
float *X, float *Y, int N, int b, uint32_t blocks,
float *lowband, int duration, float *lowband_out,
@ -497,6 +505,7 @@ static av_always_inline uint32_t quant_band_template(CeltFrame *f, OpusRangeCode
float mid = 0, side = 0;
int longblocks = (B0 == 1);
uint32_t cm = 0;
QUANT_FN(rec) = quant ? ff_celt_encode_band : ff_celt_decode_band;
if (N == 1) {
float *x = X;
@ -693,9 +702,8 @@ static av_always_inline uint32_t quant_band_template(CeltFrame *f, OpusRangeCode
sign = 1 - 2 * sign;
/* We use orig_fill here because we want to fold the side, but if
itheta==16384, we'll have cleared the low bits of fill. */
cm = ff_celt_decode_band(f, rc, band, x2, NULL, N, mbits, blocks,
lowband, duration, lowband_out, level, gain,
lowband_scratch, orig_fill);
cm = rec(f, rc, band, x2, NULL, N, mbits, blocks, lowband, duration,
lowband_out, level, gain, lowband_scratch, orig_fill);
/* We don't split N=2 bands, so cm is either 1 or 0 (for a fold-collapse),
and there's no need to worry about mixing with the other channel. */
y2[0] = -sign * x2[1];
@ -716,6 +724,7 @@ static av_always_inline uint32_t quant_band_template(CeltFrame *f, OpusRangeCode
float *next_lowband_out1 = NULL;
int next_level = 0;
int rebalance;
uint32_t cmt;
/* Give more bits to low-energy MDCTs than they would
* otherwise deserve */
@ -746,55 +755,34 @@ static av_always_inline uint32_t quant_band_template(CeltFrame *f, OpusRangeCode
if (mbits >= sbits) {
/* In stereo mode, we do not apply a scaling to the mid
* because we need the normalized mid for folding later */
cm = quant ? ff_celt_encode_band(f, rc, band, X, NULL, N, mbits, blocks,
lowband, duration, next_lowband_out1,
next_level, stereo ? 1.0f : (gain * mid),
lowband_scratch, fill) :
ff_celt_decode_band(f, rc, band, X, NULL, N, mbits, blocks,
lowband, duration, next_lowband_out1,
next_level, stereo ? 1.0f : (gain * mid),
lowband_scratch, fill);
cm = rec(f, rc, band, X, NULL, N, mbits, blocks, lowband,
duration, next_lowband_out1, next_level,
stereo ? 1.0f : (gain * mid), lowband_scratch, fill);
rebalance = mbits - (rebalance - f->remaining2);
if (rebalance > 3 << 3 && itheta != 0)
sbits += rebalance - (3 << 3);
/* For a stereo split, the high bits of fill are always zero,
* so no folding will be done to the side. */
cm |= quant ? ff_celt_encode_band(f, rc, band, Y, NULL, N, sbits, blocks,
next_lowband2, duration, NULL,
next_level, gain * side, NULL,
fill >> blocks) << ((B0 >> 1) & (stereo - 1)) :
ff_celt_decode_band(f, rc, band, Y, NULL, N, sbits, blocks,
next_lowband2, duration, NULL,
next_level, gain * side, NULL,
fill >> blocks) << ((B0 >> 1) & (stereo - 1));
cmt = rec(f, rc, band, Y, NULL, N, sbits, blocks, next_lowband2,
duration, NULL, next_level, gain * side, NULL,
fill >> blocks);
cm |= cmt << ((B0 >> 1) & (stereo - 1));
} else {
/* For a stereo split, the high bits of fill are always zero,
* so no folding will be done to the side. */
cm = quant ? ff_celt_encode_band(f, rc, band, Y, NULL, N, sbits, blocks,
next_lowband2, duration, NULL,
next_level, gain * side, NULL,
fill >> blocks) << ((B0 >> 1) & (stereo - 1)) :
ff_celt_decode_band(f, rc, band, Y, NULL, N, sbits, blocks,
next_lowband2, duration, NULL,
next_level, gain * side, NULL,
fill >> blocks) << ((B0 >> 1) & (stereo - 1));
cm = rec(f, rc, band, Y, NULL, N, sbits, blocks, next_lowband2,
duration, NULL, next_level, gain * side, NULL, fill >> blocks);
cm <<= ((B0 >> 1) & (stereo - 1));
rebalance = sbits - (rebalance - f->remaining2);
if (rebalance > 3 << 3 && itheta != 16384)
mbits += rebalance - (3 << 3);
/* In stereo mode, we do not apply a scaling to the mid because
* we need the normalized mid for folding later */
cm |= quant ? ff_celt_encode_band(f, rc, band, X, NULL, N, mbits, blocks,
lowband, duration, next_lowband_out1,
next_level, stereo ? 1.0f : (gain * mid),
lowband_scratch, fill) :
ff_celt_decode_band(f, rc, band, X, NULL, N, mbits, blocks,
lowband, duration, next_lowband_out1,
next_level, stereo ? 1.0f : (gain * mid),
lowband_scratch, fill);
cm |= rec(f, rc, band, X, NULL, N, mbits, blocks, lowband, duration,
next_lowband_out1, next_level, stereo ? 1.0f : (gain * mid),
lowband_scratch, fill);
}
}
} else {