#include <stdint.h>
#include "avcodec.h"
+#include "celp_filters.h"
#include "ra144.h"
const int16_t ff_gain_val_tab[256][3] = {
return 0x20000000 / (ff_t_sqrt(sum) >> 8);
}
+
+void ff_subblock_synthesis(RA144Context *ractx, const uint16_t *lpc_coefs,
+ int cba_idx, int cb1_idx, int cb2_idx,
+ int gval, int gain)
+{
+ uint16_t buffer_a[40];
+ uint16_t *block;
+ int m[3];
+
+ if (cba_idx) {
+ cba_idx += BLOCKSIZE/2 - 1;
+ ff_copy_and_dup(buffer_a, ractx->adapt_cb, cba_idx);
+ m[0] = (ff_irms(buffer_a) * gval) >> 12;
+ } else {
+ m[0] = 0;
+ }
+ m[1] = (ff_cb1_base[cb1_idx] * gval) >> 8;
+ m[2] = (ff_cb2_base[cb2_idx] * gval) >> 8;
+ memmove(ractx->adapt_cb, ractx->adapt_cb + BLOCKSIZE,
+ (BUFFERSIZE - BLOCKSIZE) * sizeof(*ractx->adapt_cb));
+
+ block = ractx->adapt_cb + BUFFERSIZE - BLOCKSIZE;
+
+ ff_add_wav(block, gain, cba_idx, m, cba_idx? buffer_a: NULL,
+ ff_cb1_vects[cb1_idx], ff_cb2_vects[cb2_idx]);
+
+ memcpy(ractx->curr_sblock, ractx->curr_sblock + 40,
+ 10*sizeof(*ractx->curr_sblock));
+
+ if (ff_celp_lp_synthesis_filter(ractx->curr_sblock + 10, lpc_coefs,
+ block, BLOCKSIZE, 10, 1, 0xfff))
+ memset(ractx->curr_sblock, 0, 50*sizeof(*ractx->curr_sblock));
+}
int energy);
unsigned int ff_rescale_rms(unsigned int rms, unsigned int energy);
int ff_irms(const int16_t *data);
+void ff_subblock_synthesis(RA144Context *ractx, const uint16_t *lpc_coefs,
+ int cba_idx, int cb1_idx, int cb2_idx,
+ int gval, int gain);
extern const int16_t ff_gain_val_tab[256][3];
extern const uint8_t ff_gain_exp_tab[256];
#include "avcodec.h"
#include "get_bits.h"
#include "ra144.h"
-#include "celp_filters.h"
static av_cold int ra144_decode_init(AVCodecContext * avctx)
static void do_output_subblock(RA144Context *ractx, const uint16_t *lpc_coefs,
int gval, GetBitContext *gb)
{
- uint16_t buffer_a[40];
- uint16_t *block;
int cba_idx = get_bits(gb, 7); // index of the adaptive CB, 0 if none
int gain = get_bits(gb, 8);
int cb1_idx = get_bits(gb, 7);
int cb2_idx = get_bits(gb, 7);
- int m[3];
-
- if (cba_idx) {
- cba_idx += BLOCKSIZE/2 - 1;
- ff_copy_and_dup(buffer_a, ractx->adapt_cb, cba_idx);
- m[0] = (ff_irms(buffer_a) * gval) >> 12;
- } else {
- m[0] = 0;
- }
-
- m[1] = (ff_cb1_base[cb1_idx] * gval) >> 8;
- m[2] = (ff_cb2_base[cb2_idx] * gval) >> 8;
-
- memmove(ractx->adapt_cb, ractx->adapt_cb + BLOCKSIZE,
- (BUFFERSIZE - BLOCKSIZE) * sizeof(*ractx->adapt_cb));
-
- block = ractx->adapt_cb + BUFFERSIZE - BLOCKSIZE;
-
- ff_add_wav(block, gain, cba_idx, m, cba_idx? buffer_a: NULL,
- ff_cb1_vects[cb1_idx], ff_cb2_vects[cb2_idx]);
-
- memcpy(ractx->curr_sblock, ractx->curr_sblock + 40,
- 10*sizeof(*ractx->curr_sblock));
- if (ff_celp_lp_synthesis_filter(ractx->curr_sblock + 10, lpc_coefs,
- block, BLOCKSIZE, 10, 1, 0xfff))
- memset(ractx->curr_sblock, 0, 50*sizeof(*ractx->curr_sblock));
+ ff_subblock_synthesis(ractx, lpc_coefs, cba_idx, cb1_idx, cb2_idx, gval,
+ gain);
}
/** Uncompress one block (20 bytes -> 160*2 bytes). */