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More work on decoding (still cheating)

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This commit is contained in:
Jean-Marc Valin 2007-12-07 15:36:39 +11:00
parent 0aa3903a4a
commit 671bf403e6
1 changed files with 16 additions and 13 deletions
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29
libcelt/celt.c
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@ -44,7 +44,6 @@
/* This is only for cheating until the decoder is complete */
float cheating_ebands[100];
float cheating_pitch_gains[100];
float cheating_period;
struct CELTEncoder {
@ -86,6 +85,7 @@ CELTEncoder *celt_encoder_new(const CELTMode *mode)
st->nb_blocks = B;
ec_byte_writeinit(&st->buf);
ec_enc_init(&st->enc,&st->buf);
mdct_init(&st->mdct_lookup, 2*N);
st->fft = spx_fft_init(MAX_PERIOD);
@ -181,10 +181,6 @@ int celt_encode(CELTEncoder *st, short *pcm)
float gains[st->mode->nbPBands];
int pitch_index;
ec_byte_reset(&st->buf);
ec_enc_init(&st->enc,&st->buf);
for (i=0;i<N;i++)
in[i] = st->in_mem[i];
for (;i<(B+1)*N;i++)
@ -206,6 +202,7 @@ int celt_encode(CELTEncoder *st, short *pcm)
in[B*N+i] *= st->window[N+i];
}
find_spectral_pitch(st->fft, in, st->out_mem, MAX_PERIOD, (B+1)*N, &pitch_index);
ec_enc_uint(&st->enc, pitch_index, MAX_PERIOD-(B+1)*N);
/* Compute MDCTs of the pitch part */
compute_mdcts(&st->mdct_lookup, st->window, st->out_mem+pitch_index, P, N, B);
@ -237,7 +234,6 @@ int celt_encode(CELTEncoder *st, short *pcm)
//quantise_pitch(gains, PBANDS);
pitch_quant_bands(st->mode, X, P, gains);
cheating_period = pitch_index;
for (i=0;i<st->mode->nbEBands;i++)
cheating_ebands[i] = bandE[i];
for (i=0;i<st->mode->nbPBands;i++)
@ -295,20 +291,29 @@ int celt_encode(CELTEncoder *st, short *pcm)
pcm[i*N+j] = (short)floor(.5+tmp);
}
}
ec_enc_done(&st->enc);
//printf ("%d\n", ec_byte_bytes(&st->buf));
return 0;
}
char *celt_encoder_get_bytes(CELTEncoder *st, int *nbBytes)
{
char *data;
ec_enc_done(&st->enc);
*nbBytes = ec_byte_bytes(&st->buf);
return ec_byte_get_buffer(&st->buf);
data = ec_byte_get_buffer(&st->buf);
//printf ("%d\n", *nbBytes);
/* Reset the packing for the next encoding */
ec_byte_reset(&st->buf);
ec_enc_init(&st->enc,&st->buf);
return data;
}
/****************************************************************************/
/* Decoder */
/* */
/* DECODER */
/* */
/****************************************************************************/
@ -346,8 +351,6 @@ CELTDecoder *celt_decoder_new(const CELTMode *mode)
st->block_size = N;
st->nb_blocks = B;
ec_byte_writeinit(&st->buf);
mdct_init(&st->mdct_lookup, 2*N);
st->window = celt_alloc(2*N*sizeof(float));
@ -402,7 +405,7 @@ int celt_decode(CELTDecoder *st, char *data, int len, short *pcm)
bandE[i] = cheating_ebands[i];
/* Get the pitch index */
pitch_index = cheating_period;
pitch_index = ec_dec_uint(&dec, MAX_PERIOD-(B+1)*N);;
/* Pitch MDCT */
compute_mdcts(&st->mdct_lookup, st->window, st->out_mem+pitch_index, P, N, B);