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Experimental ld51 mode (needs more work)

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This commit is contained in:
Jean-Marc Valin 2008-02-15 14:20:29 +11:00
parent 329638626a
commit 6da36c0452
4 changed files with 51 additions and 2 deletions
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1
libcelt/celt.h
View file

@ -55,6 +55,7 @@ typedef struct CELTMode CELTMode;
extern const CELTMode *celt_mono;
extern const CELTMode *celt_stereo;
extern const CELTMode *celt_ld51;
/* Encoder stuff */

45
libcelt/modes.c
View file

@ -147,6 +147,51 @@ const CELTMode const *celt_mono = &mono_mode;
const CELTMode const *celt_stereo = &stereo_mode;
#define NBANDS51 17
#define PBANDS51 8
#define PITCH_END51 64
const int qbank51[NBANDS51 +2] = {0, 4, 8, 12, 16, 20, 24, 28, 32, 38, 44, 52, 64, 78, 96,122,156,204, 256};
const int qbank51b[NBANDS +2] = {0, 3, 6, 9, 12, 16, 20, 24, 28, 32, 38, 44, 52, 64, 78, 96,122,156,204, 256};
const int pbank51[PBANDS51 +2] = {0, 4, 8, 12, 16, 24, 32, 44, PITCH_END51, 256};
const int pbank51b[PBANDS +2] = {0, 3, 6, 9, 12, 20, 38, 52, PITCH_END51, 256};
#define NALLOCS51 10
int bitalloc51[NBANDS51*NALLOCS51] =
{ 6, 5, 3, 2, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
7, 6, 5, 4, 3, 3, 3, 3, 3, 3, 3, 0, 0, 0, 0, 0, 0,
8, 7, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 0, 0, 0, 0, 0,
9, 8, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 0, 0, 0,
10, 9, 8, 8, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 0, 0,
10, 9, 9, 8, 8, 8, 8, 8, 8, 8, 9, 10, 11, 10, 10, 5, 5,
16, 15, 14, 14, 14, 13, 13, 13, 13, 13, 15, 16, 17, 18, 20, 18, 11,
26, 25, 24, 22, 20, 18, 19, 19, 25, 22, 25, 30, 30, 35, 35, 35, 35,
32, 30, 28, 27, 25, 24, 23, 21, 29, 27, 35, 40, 42, 50, 59, 54, 51,
42, 40, 38, 37, 35, 34, 33, 31, 39, 37, 45, 50, 52, 60, 60, 60, 60,
};
static const CELTMode ld51 = {
128, /**< overlap */
256, /**< mdctSize */
1, /**< nbMdctBlocks */
1, /**< channels */
NBANDS51, /**< nbEBands */
PBANDS51, /**< nbPBands */
PITCH_END51, /**< pitchEnd */
qbank51, /**< eBands */
pbank51, /**< pBands*/
0, /**< nbPulses */
0.8, /**< ePredCoef */
means18, /**< eMeans */
decay18, /**< eDecay */
NALLOCS51, /**< nbAllocVectors */
bitalloc51, /**< allocVectors */
};
const CELTMode const *celt_ld51 = &ld51;
int celt_mode_info(const CELTMode *mode, int request, celt_int32_t *value)
{
switch (request)

1
libcelt/quant_bands.c
View file

@ -37,6 +37,7 @@
const float eMeans[24] = {45.f, -8.f, -12.f, -2.5f, 1.f, 0.f, 0.f, 0.f, 0.f, 0.f, 0.f, 0.f, 0.f, 0.f, 0.f, 0.f, 0.f, 0.f, 0.f, 0.f, 0.f, 0.f, 0.f, 0.f};
//const int frac[24] = {4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2};
const int frac[24] = {8, 6, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2};
static void quant_energy_mono(const CELTMode *m, float *eBands, float *oldEBands, int budget, ec_enc *enc)

6
libcelt/testcelt.c
View file

@ -61,15 +61,17 @@ int main(int argc, char *argv[])
mode = celt_mono;
else if (strcmp(argv[1], "-stereo")==0)
mode = celt_stereo;
else if (strcmp(argv[1], "-ld51")==0)
mode = celt_ld51;
else {
fprintf (stderr, "mode must be -mono or -stereo\n");
return 1;
}
bytes_per_packet = atoi(argv[2]);
if (bytes_per_packet < 12 || bytes_per_packet > 120)
if (bytes_per_packet < 0 || bytes_per_packet > 120)
{
fprintf (stderr, "bytes per packet must be between 15 and 120\n");
fprintf (stderr, "bytes per packet must be between 10 and 120\n");
return 1;
}
inFile = argv[3];