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Taking into account the frame size in more encoder decisions

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Stereo mode, stereo width, min bandwidth, VBR damping
This commit is contained in:
Jean-Marc Valin 2013-11-08 19:24:10 -05:00
parent 9ffce06c77
commit c1959e7dc3
2 changed files with 16 additions and 12 deletions
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13
celt/celt_encoder.c
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@ -1295,6 +1295,7 @@ int celt_encode_with_ec(CELTEncoder * OPUS_RESTRICT st, const opus_val16 * pcm,
opus_val16 surround_masking=0;
opus_val16 temporal_vbr=0;
opus_val16 surround_trim = 0;
opus_int32 equiv_rate = 510000;
VARDECL(opus_val16, surround_dynalloc);
ALLOC_STACK;
@ -1376,6 +1377,8 @@ int celt_encode_with_ec(CELTEncoder * OPUS_RESTRICT st, const opus_val16 * pcm,
(tmp+4*mode->Fs)/(8*mode->Fs)-!!st->signalling));
effectiveBytes = nbCompressedBytes;
}
if (st->bitrate != OPUS_BITRATE_MAX)
equiv_rate = st->bitrate - (40*C+20)*((400>>LM) - 50);
if (enc==NULL)
{
@ -1830,7 +1833,7 @@ int celt_encode_with_ec(CELTEncoder * OPUS_RESTRICT st, const opus_val16 * pcm,
if (st->constrained_vbr)
base_target += (st->vbr_offset>>lm_diff);
target = compute_vbr(mode, &st->analysis, base_target, LM, st->bitrate,
target = compute_vbr(mode, &st->analysis, base_target, LM, equiv_rate,
st->lastCodedBands, C, st->intensity, st->constrained_vbr,
st->stereo_saving, tot_boost, tf_estimate, pitch_change, maxDepth,
st->variable_duration, st->lfe, st->energy_mask!=NULL, surround_masking,
@ -1914,13 +1917,13 @@ int celt_encode_with_ec(CELTEncoder * OPUS_RESTRICT st, const opus_val16 * pcm,
if (st->analysis.valid)
{
int min_bandwidth;
if (st->bitrate < (opus_int32)32000*C)
if (equiv_rate < (opus_int32)32000*C)
min_bandwidth = 13;
else if (st->bitrate < (opus_int32)48000*C)
else if (equiv_rate < (opus_int32)48000*C)
min_bandwidth = 16;
else if (st->bitrate < (opus_int32)60000*C)
else if (equiv_rate < (opus_int32)60000*C)
min_bandwidth = 18;
else if (st->bitrate < (opus_int32)80000*C)
else if (equiv_rate < (opus_int32)80000*C)
min_bandwidth = 19;
else
min_bandwidth = 20;