OBJS-$(CONFIG_QPEG_DECODER) += qpeg.o
OBJS-$(CONFIG_QTRLE_DECODER) += qtrle.o
OBJS-$(CONFIG_QTRLE_ENCODER) += qtrleenc.o
-OBJS-$(CONFIG_RA_144_DECODER) += ra144.o
+OBJS-$(CONFIG_RA_144_DECODER) += ra144.o acelp_filters.o
OBJS-$(CONFIG_RA_288_DECODER) += ra288.o
OBJS-$(CONFIG_RAWVIDEO_DECODER) += rawdec.o
OBJS-$(CONFIG_RAWVIDEO_ENCODER) += rawenc.o
#include "avcodec.h"
#include "bitstream.h"
#include "ra144.h"
+#include "acelp_filters.h"
#define NBLOCKS 4 ///< number of subblocks within a block
#define BLOCKSIZE 40 ///< subblock size in 16-bit words
dest[i] = (s1[i]*v[0] + s2[i]*v[1] + s3[i]*v[2]) >> 12;
}
-/**
- * LPC Filter. Each output value is predicted from the 10 previous computed
- * ones. It overwrites the input with the output.
- *
- * @param in the input of the filter. It should be an array of size len + 10.
- * The 10 first input values are used to evaluate the first filtered one.
- */
-static void lpc_filter(uint16_t *in, const int16_t *lpc_coefs, int len)
-{
- int x, i;
- int16_t *ptr = in;
-
- for (i=0; i<len; i++) {
- int sum = 0;
- int new_val;
-
- for(x=0; x<10; x++)
- sum += lpc_coefs[9-x] * ptr[x];
-
- sum >>= 12;
-
- new_val = ptr[10] - sum;
-
- if (new_val < -32768 || new_val > 32767) {
- memset(in, 0, 50*sizeof(*in));
- return;
- }
-
- ptr[10] = new_val;
- ptr++;
- }
-}
-
static unsigned int rescale_rms(unsigned int rms, unsigned int energy)
{
return (rms * energy) >> 10;
memcpy(ractx->curr_sblock + 10, block,
BLOCKSIZE*sizeof(*ractx->curr_sblock));
- lpc_filter(ractx->curr_sblock, lpc_coefs, BLOCKSIZE);
+ if (ff_acelp_lp_synthesis_filter(
+ ractx->curr_sblock + 10, lpc_coefs -1,
+ ractx->curr_sblock + 10, BLOCKSIZE,
+ 11, 1, 0xfff)
+ )
+ memset(ractx->curr_sblock, 0, 50*sizeof(*ractx->curr_sblock));
}
static void int_to_int16(int16_t *out, const int *inp)