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Yet another step towards variable frame size

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This commit is contained in:
Jean-Marc Valin 2010-05-05 21:37:53 -04:00
parent 0475267e62
commit 073d0bc925
4 changed files with 58 additions and 49 deletions
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6
libcelt/bands.c
View file

@ -472,7 +472,7 @@ void quant_bands(const CELTMode *m, int start, celt_norm * restrict X, const cel
int curr_balance, curr_bits;
N = M*eBands[i+1]-M*eBands[i];
BPbits = m->bits;
BPbits = m->bits[FULL_FRAME(m)];
if (encode)
tell = ec_enc_tell(enc_dec, BITRES);
@ -552,7 +552,7 @@ void quant_bands_stereo(const CELTMode *m, int start, celt_norm *_X, const celt_
X = _X+M*eBands[i];
Y = X+M*eBands[m->nbEBands+1];
BPbits = m->bits;
BPbits = m->bits[FULL_FRAME(m)];
N = M*eBands[i+1]-M*eBands[i];
tell = ec_enc_tell(enc, BITRES);
@ -789,7 +789,7 @@ void unquant_bands_stereo(const CELTMode *m, int start, celt_norm *_X, const cel
X = _X+M*eBands[i];
Y = X+M*eBands[m->nbEBands+1];
BPbits = m->bits;
BPbits = m->bits[FULL_FRAME(m)];
N = M*eBands[i+1]-M*eBands[i];
tell = ec_dec_tell(dec, BITRES);

12
libcelt/celt.c
View file

@ -328,11 +328,11 @@ static void compute_mdcts(const CELTMode *mode, int shortBlocks, celt_sig * rest
const int C = CHANNELS(_C);
if (C==1 && !shortBlocks)
{
const mdct_lookup *lookup = MDCT(mode);
const mdct_lookup *lookup = &mode->mdct[FULL_FRAME(mode)];
const int overlap = OVERLAP(mode);
clt_mdct_forward(lookup, in, out, mode->window, overlap);
} else {
const mdct_lookup *lookup = MDCT(mode);
const mdct_lookup *lookup = &mode->mdct[FULL_FRAME(mode)];
const int overlap = OVERLAP(mode);
int N = FRAMESIZE(mode);
int B = 1;
@ -342,7 +342,7 @@ static void compute_mdcts(const CELTMode *mode, int shortBlocks, celt_sig * rest
SAVE_STACK;
if (shortBlocks)
{
lookup = &mode->shortMdct;
lookup = &mode->mdct[0];
N = mode->shortMdctSize;
B = shortBlocks;
}
@ -378,7 +378,7 @@ static void compute_inv_mdcts(const CELTMode *mode, int shortBlocks, celt_sig *X
{
int j;
if (transient_shift==0 && C==1 && !shortBlocks) {
const mdct_lookup *lookup = MDCT(mode);
const mdct_lookup *lookup = &mode->mdct[FULL_FRAME(mode)];
clt_mdct_backward(lookup, X, out_mem+C*(MAX_PERIOD-N-N4), mode->window, overlap);
} else {
VARDECL(celt_word32, x);
@ -387,7 +387,7 @@ static void compute_inv_mdcts(const CELTMode *mode, int shortBlocks, celt_sig *X
int N2 = N;
int B = 1;
int n4offset=0;
const mdct_lookup *lookup = MDCT(mode);
const mdct_lookup *lookup = &mode->mdct[FULL_FRAME(mode)];
SAVE_STACK;
ALLOC(x, 2*N, celt_word32);
@ -395,7 +395,7 @@ static void compute_inv_mdcts(const CELTMode *mode, int shortBlocks, celt_sig *X
if (shortBlocks)
{
lookup = &mode->shortMdct;
lookup = &mode->mdct[0];
N2 = mode->shortMdctSize;
B = shortBlocks;
n4offset = N4;

66
libcelt/modes.c
View file

@ -325,27 +325,15 @@ CELTMode *celt_mode_create(celt_int32 Fs, int frame_size, int *error)
mode->mdctSize = frame_size;
mode->ePredCoef = QCONST16(.8f,15);
if (frame_size > 640 && (frame_size%16)==0)
if (frame_size >= 640 && (frame_size%16)==0)
{
mode->nbShortMdcts = 8;
} else if (frame_size > 384 && (frame_size%8)==0)
} else if (frame_size >= 320 && (frame_size%8)==0)
{
mode->nbShortMdcts = 4;
} else if (frame_size > 384 && (frame_size%10)==0)
{
mode->nbShortMdcts = 5;
} else if (frame_size > 256 && (frame_size%6)==0)
{
mode->nbShortMdcts = 3;
} else if (frame_size > 256 && (frame_size%8)==0)
{
mode->nbShortMdcts = 4;
} else if (frame_size > 64 && (frame_size%4)==0)
} else if (frame_size >= 120 && (frame_size%4)==0)
{
mode->nbShortMdcts = 2;
} else if (frame_size > 128 && (frame_size%6)==0)
{
mode->nbShortMdcts = 3;
} else
{
mode->nbShortMdcts = 1;
@ -384,7 +372,12 @@ CELTMode *celt_mode_create(celt_int32 Fs, int frame_size, int *error)
#endif
mode->window = window;
mode->bits = (const celt_int16 **)compute_alloc_cache(mode, 1, mode->nbShortMdcts);
for (i=0;(1<<i)<=mode->nbShortMdcts;i++)
{
/* FIXME: Do something for i==0 */
if (i!=0)
mode->bits[i] = (const celt_int16 **)compute_alloc_cache(mode, 1, 1<<i);
}
if (mode->bits==NULL)
goto failure;
@ -397,16 +390,18 @@ CELTMode *celt_mode_create(celt_int32 Fs, int frame_size, int *error)
mode->logN = logN;
#endif /* !STATIC_MODES */
clt_mdct_init(&mode->mdct, 2*mode->mdctSize);
clt_mdct_init(&mode->shortMdct, 2*mode->shortMdctSize);
mode->prob = quant_prob_alloc(mode);
if ((mode->mdct.trig==NULL) || (mode->shortMdct.trig==NULL)
for (i=0;(1<<i)<=mode->nbShortMdcts;i++)
{
clt_mdct_init(&mode->mdct[i], 2*mode->shortMdctSize<<i);
if ((mode->mdct[i].trig==NULL)
#ifndef ENABLE_TI_DSPLIB55
|| (mode->mdct.kfft==NULL) || (mode->shortMdct.kfft==NULL)
|| (mode->mdct[i].kfft==NULL)
#endif
|| (mode->prob==NULL))
)
goto failure;
}
mode->prob = quant_prob_alloc(mode);
if (mode->prob==NULL)
goto failure;
mode->marker_start = MODEVALID;
@ -424,7 +419,7 @@ failure:
void celt_mode_destroy(CELTMode *mode)
{
int i;
int i, m;
const celt_int16 *prevPtr = NULL;
if (mode == NULL)
{
@ -445,18 +440,24 @@ void celt_mode_destroy(CELTMode *mode)
}
mode->marker_start = MODEFREED;
#ifndef STATIC_MODES
if (mode->bits!=NULL)
for (m=0;(1<<m)<=mode->nbShortMdcts;m++)
{
/* FIXME: Do something for i==0 */
if (m==0)
continue;
if (mode->bits[m]!=NULL)
{
for (i=0;i<mode->nbEBands;i++)
{
if (mode->bits[i] != prevPtr)
if (mode->bits[m][i] != prevPtr)
{
prevPtr = mode->bits[i];
celt_free((int*)mode->bits[i]);
prevPtr = mode->bits[m][i];
celt_free((int*)mode->bits[m][i]);
}
}
}
celt_free((celt_int16**)mode->bits);
celt_free((celt_int16**)mode->bits[m]);
}
celt_free((celt_int16*)mode->eBands);
celt_free((celt_int16*)mode->allocVectors);
@ -464,8 +465,9 @@ void celt_mode_destroy(CELTMode *mode)
celt_free((celt_int16*)mode->logN);
#endif
clt_mdct_clear(&mode->mdct);
clt_mdct_clear(&mode->shortMdct);
for (i=0;(1<<i)<=mode->nbShortMdcts;i++)
clt_mdct_clear(&mode->mdct[i]);
quant_prob_free(mode->prob);
mode->marker_end = MODEFREED;
celt_free((CELTMode *)mode);

17
libcelt/modes.h
View file

@ -40,6 +40,8 @@
#include "mdct.h"
#include "pitch.h"
#define MAX_CONFIG_SIZES 4
#define CELT_BITSTREAM_VERSION 0x8000000c
#ifdef STATIC_MODES
@ -64,8 +66,6 @@
# endif
#endif
#define MDCT(mode) (&(mode)->mdct)
#ifndef OVERLAP
#define OVERLAP(mode) ((mode)->overlap)
#endif
@ -93,22 +93,29 @@ struct CELTMode {
int nbAllocVectors; /**< Number of lines in the matrix below */
const celt_int16 *allocVectors; /**< Number of bits in each band for several rates */
const celt_int16 * const *bits; /**< Cache for pulses->bits mapping in each band */
const celt_int16 * const *(bits[MAX_CONFIG_SIZES]); /**< Cache for pulses->bits mapping in each band */
/* Stuff that could go in the {en,de}coder, but we save space this way */
mdct_lookup mdct;
mdct_lookup mdct[MAX_CONFIG_SIZES];
const celt_word16 *window;
int nbShortMdcts;
int shortMdctSize;
mdct_lookup shortMdct;
int *prob;
const celt_int16 *logN;
celt_uint32 marker_end;
};
static inline int FULL_FRAME(const CELTMode *m)
{
int i=0;
while (1<<i < m->nbShortMdcts)
i++;
return i;
}
int check_mode(const CELTMode *mode);
#endif