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Taking into account the percentage of packet loss for intra decision

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This commit is contained in:
Jean-Marc Valin 2011-04-21 16:04:27 -04:00
parent 6965388866
commit eda2dee88d
3 changed files with 12 additions and 12 deletions
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4
libcelt/celt.c
View file

@ -151,7 +151,7 @@ struct CELTEncoder {
celt_uint32 rng;
int spread_decision;
int delayedIntra;
celt_word32 delayedIntra;
int tonal_average;
int lastCodedBands;
int hf_average;
@ -1304,7 +1304,7 @@ int celt_encode_with_ec_float(CELTEncoder * restrict st, const celt_sig * pcm, i
quant_coarse_energy(st->mode, st->start, st->end, effEnd, bandLogE,
oldBandE, total_bits, error, enc,
C, LM, nbAvailableBytes, st->force_intra,
&st->delayedIntra, st->complexity >= 4);
&st->delayedIntra, st->complexity >= 4, st->loss_rate);
tf_encode(st->start, st->end, isTransient, tf_res, LM, tf_select, enc);

17
libcelt/quant_bands.c
View file

@ -139,7 +139,7 @@ static const unsigned char e_prob_model[4][2][42] = {
static const unsigned char small_energy_icdf[3]={2,1,0};
static int intra_decision(const celt_word16 *eBands, celt_word16 *oldEBands, int start, int end, int len, int C)
static celt_word32 intra_decision(const celt_word16 *eBands, celt_word16 *oldEBands, int start, int end, int len, int C)
{
int c, i;
celt_word32 dist = 0;
@ -150,7 +150,7 @@ static int intra_decision(const celt_word16 *eBands, celt_word16 *oldEBands, int
dist = MAC16_16(dist, d,d);
}
} while (++c<C);
return SHR32(dist,2*DB_SHIFT-4) > 2*C*(end-start);
return MIN32(200,SHR32(dist,2*DB_SHIFT-4));
}
static int quant_coarse_energy_impl(const CELTMode *m, int start, int end,
@ -260,7 +260,7 @@ static int quant_coarse_energy_impl(const CELTMode *m, int start, int end,
void quant_coarse_energy(const CELTMode *m, int start, int end, int effEnd,
const celt_word16 *eBands, celt_word16 *oldEBands, celt_uint32 budget,
celt_word16 *error, ec_enc *enc, int _C, int LM, int nbAvailableBytes,
int force_intra, int *delayedIntra, int two_pass)
int force_intra, celt_word32 *delayedIntra, int two_pass, int loss_rate)
{
const int C = CHANNELS(_C);
int intra;
@ -270,13 +270,12 @@ void quant_coarse_energy(const CELTMode *m, int start, int end, int effEnd,
ec_enc enc_start_state;
celt_uint32 tell;
int badness1=0;
celt_int32 intra_bias;
SAVE_STACK;
intra = force_intra || (*delayedIntra && nbAvailableBytes > (end-start)*C);
if (/*shortBlocks || */intra_decision(eBands, oldEBands, start, effEnd, m->nbEBands, C))
*delayedIntra = 1;
else
*delayedIntra = 0;
intra = force_intra || (!two_pass && *delayedIntra>2*C*(end-start) && nbAvailableBytes > (end-start)*C);
intra_bias = ((budget**delayedIntra*loss_rate)/(C*512));
*delayedIntra = intra_decision(eBands, oldEBands, start, effEnd, m->nbEBands, C);
tell = ec_tell(enc);
if (tell+3 > budget)
@ -329,7 +328,7 @@ void quant_coarse_energy(const CELTMode *m, int start, int end, int effEnd,
badness2 = quant_coarse_energy_impl(m, start, end, eBands, oldEBands, budget,
tell, e_prob_model[LM][intra], error, enc, C, LM, 0, max_decay);
if (two_pass && (badness1 < badness2 || (badness1 == badness2 && ec_tell_frac(enc) > tell_intra)))
if (two_pass && (badness1 < badness2 || (badness1 == badness2 && ec_tell_frac(enc)+intra_bias > tell_intra)))
{
*enc = enc_intra_state;
/* Copy intra bits to bit-stream */

3
libcelt/quant_bands.h
View file

@ -47,7 +47,8 @@ void quant_prob_free(const celt_int16 *freq);
void quant_coarse_energy(const CELTMode *m, int start, int end, int effEnd,
const celt_word16 *eBands, celt_word16 *oldEBands, celt_uint32 budget,
celt_word16 *error, ec_enc *enc, int _C, int LM,
int nbAvailableBytes, int force_intra, int *delayedIntra, int two_pass);
int nbAvailableBytes, int force_intra, celt_word32 *delayedIntra,
int two_pass, int loss_rate);
void quant_fine_energy(const CELTMode *m, int start, int end, celt_word16 *oldEBands, celt_word16 *error, int *fine_quant, ec_enc *enc, int _C);