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cleaning up

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This commit is contained in:
Jean-Marc Valin 2008-01-31 10:05:39 +11:00
parent ccc988b822
commit 3d3bb68536
3 changed files with 32 additions and 68 deletions
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56
libcelt/celt.c
View file

@ -143,49 +143,6 @@ void celt_encoder_destroy(CELTEncoder *st)
celt_free(st);
}
static void haar1(float *X, int N, int stride)
{
int i, k;
for (k=0;k<stride;k++)
{
for (i=k;i<N*stride;i+=2*stride)
{
float a, b;
a = X[i];
b = X[i+stride];
X[i] = .707107f*(a+b);
X[i+stride] = .707107f*(a-b);
}
}
}
static void time_dct(float *X, int N, int B, int stride)
{
switch (B)
{
case 1:
break;
case 2:
haar1(X, B*N, stride);
break;
default:
celt_warning("time_dct not defined for B > 2");
};
}
static void time_idct(float *X, int N, int B, int stride)
{
switch (B)
{
case 1:
break;
case 2:
haar1(X, B*N, stride);
break;
default:
celt_warning("time_dct not defined for B > 2");
};
}
static void compute_mdcts(mdct_lookup *mdct_lookup, float *window, float *in, float *out, int N, int B, int C)
{
@ -234,7 +191,7 @@ static void compute_inv_mdcts(mdct_lookup *mdct_lookup, float *window, float *X,
}
}
int celt_encode(CELTEncoder *st, short *pcm, unsigned char *compressed, int nbCompressedBytes)
int celt_encode(CELTEncoder *st, celt_int16_t *pcm, unsigned char *compressed, int nbCompressedBytes)
{
int i, c, N, B, C, N4;
N = st->block_size;
@ -328,9 +285,6 @@ int celt_encode(CELTEncoder *st, short *pcm, unsigned char *compressed, int nbCo
//for (i=30;i<N*B;i++)
// X[i*C+1] = P[i*C+1] = 0;
/* Get a tiny bit more frequency resolution and prevent unstable energy when quantising */
time_dct(X, N, B, C);
time_dct(P, N, B, C);
/* Pitch prediction */
compute_pitch_gain(st->mode, X, P, gains, bandE);
@ -349,9 +303,7 @@ int celt_encode(CELTEncoder *st, short *pcm, unsigned char *compressed, int nbCo
/* Residual quantisation */
quant_bands(st->mode, X, P, mask, &st->alloc, nbCompressedBytes*8, &st->enc);
time_idct(X, N, B, C);
if (C==2)
//haar1(X, B*N*C, 1);
stereo_mix(st->mode, X, bandE, -1);
renormalise_bands(st->mode, X);
@ -544,7 +496,7 @@ static void celt_decode_lost(CELTDecoder *st, short *pcm)
}
}
int celt_decode(CELTDecoder *st, char *data, int len, short *pcm)
int celt_decode(CELTDecoder *st, char *data, int len, celt_int16_t *pcm)
{
int i, c, N, B, C;
N = st->block_size;
@ -585,9 +537,7 @@ int celt_decode(CELTDecoder *st, char *data, int len, short *pcm)
}
if (C==2)
//haar1(P, B*N*C, 1);
stereo_mix(st->mode, P, bandE, 1);
time_dct(P, N, B, C);
/* Get the pitch gains */
unquant_pitch(gains, st->mode->nbPBands, &dec);
@ -598,9 +548,7 @@ int celt_decode(CELTDecoder *st, char *data, int len, short *pcm)
/* Decode fixed codebook and merge with pitch */
unquant_bands(st->mode, X, P, &st->alloc, len*8, &dec);
time_idct(X, N, B, C);
if (C==2)
//haar1(X, B*N*C, 1);
stereo_mix(st->mode, X, bandE, -1);
renormalise_bands(st->mode, X);

6
libcelt/celt.h
View file

@ -32,6 +32,8 @@
#ifndef CELT_H
#define CELT_H
#include "celt_types.h"
#ifdef __cplusplus
extern "C" {
#endif
@ -57,7 +59,7 @@ CELTEncoder *celt_encoder_new(const CELTMode *mode);
void celt_encoder_destroy(CELTEncoder *st);
int celt_encode(CELTEncoder *st, short *pcm, unsigned char *compressed, int nbCompressedBytes);
int celt_encode(CELTEncoder *st, celt_int16_t *pcm, unsigned char *compressed, int nbCompressedBytes);
/* Decoder stuff */
@ -65,7 +67,7 @@ CELTDecoder *celt_decoder_new(const CELTMode *mode);
void celt_decoder_destroy(CELTDecoder *st);
int celt_decode(CELTDecoder *st, char *data, int len, short *pcm);
int celt_decode(CELTDecoder *st, char *data, int len, celt_int16_t *pcm);
#ifdef __cplusplus
}

38
libcelt/celt_header.h
View file

@ -29,22 +29,36 @@
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef CELT_HEADER_H
#define CELT_HEADER_H
#ifdef __cplusplus
extern "C" {
#endif
#include "celt.h"
#include "celt_types.h"
typedef struct {
char codec_id[8];
char codec_version[20];
int version_id;
int header_size;
int mode;
int sample_rate;
int nb_channels;
int bytes_per_packet;
int extra_headers;
char codec_id[8];
char codec_version[20];
celt_int32_t version_id;
celt_int32_t header_size;
celt_int32_t mode;
celt_int32_t sample_rate;
celt_int32_t nb_channels;
celt_int32_t bytes_per_packet;
celt_int32_t extra_headers;
} CELTHeader;
void celt_init_header(CELTHeader *header, int rate, int nb_channels, const struct CELTMode *m);
void celt_init_header(CELTHeader *header, celt_int32_t rate, celt_int32_t nb_channels, const struct CELTMode *m);
int celt_header_to_packet(const CELTHeader *header, char *packet, int size);
int celt_header_to_packet(const CELTHeader *header, char *packet, celt_uint32_t size);
int celt_packet_to_header(const char *packet, int size, CELTHeader *header);
int celt_packet_to_header(const char *packet, celt_uint32_t size, CELTHeader *header);
#ifdef __cplusplus
}
#endif
#endif /* CELT_HEADER_H */