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ra144: Convert to the new bitstream reader

tags/n3.4
Alexandra Hájková Diego Biurrun 10 years ago
parent
commit
7d8075cf47
1 changed files with 12 additions and 11 deletions
  1. +12
    -11
      libavcodec/ra144dec.c

+ 12
- 11
libavcodec/ra144dec.c View File

@@ -23,8 +23,9 @@
*/

#include "libavutil/channel_layout.h"

#include "avcodec.h"
#include "get_bits.h"
#include "bitstream.h"
#include "internal.h"
#include "ra144.h"

@@ -46,12 +47,12 @@ 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)
int gval, BitstreamContext *bc)
{
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 cba_idx = bitstream_read(bc, 7); // index of the adaptive CB, 0 if none
int gain = bitstream_read(bc, 8);
int cb1_idx = bitstream_read(bc, 7);
int cb2_idx = bitstream_read(bc, 7);

ff_subblock_synthesis(ractx, lpc_coefs, cba_idx, cb1_idx, cb2_idx, gval,
gain);
@@ -74,7 +75,7 @@ static int ra144_decode_frame(AVCodecContext * avctx, void *data,
unsigned int energy;

RA144Context *ractx = avctx->priv_data;
GetBitContext gb;
BitstreamContext bc;

if (buf_size < FRAMESIZE) {
av_log(avctx, AV_LOG_ERROR,
@@ -91,15 +92,15 @@ static int ra144_decode_frame(AVCodecContext * avctx, void *data,
}
samples = (int16_t *)frame->data[0];

init_get_bits(&gb, buf, FRAMESIZE * 8);
bitstream_init(&bc, buf, FRAMESIZE * 8);

for (i = 0; i < LPC_ORDER; i++)
lpc_refl[i] = ff_lpc_refl_cb[i][get_bits(&gb, sizes[i])];
lpc_refl[i] = ff_lpc_refl_cb[i][bitstream_read(&bc, sizes[i])];

ff_eval_coefs(ractx->lpc_coef[0], lpc_refl);
ractx->lpc_refl_rms[0] = ff_rms(lpc_refl);

energy = ff_energy_tab[get_bits(&gb, 5)];
energy = ff_energy_tab[bitstream_read(&bc, 5)];

refl_rms[0] = ff_interp(ractx, block_coefs[0], 1, 1, ractx->old_energy);
refl_rms[1] = ff_interp(ractx, block_coefs[1], 2,
@@ -111,7 +112,7 @@ static int ra144_decode_frame(AVCodecContext * avctx, void *data,
ff_int_to_int16(block_coefs[3], ractx->lpc_coef[0]);

for (i=0; i < NBLOCKS; i++) {
do_output_subblock(ractx, block_coefs[i], refl_rms[i], &gb);
do_output_subblock(ractx, block_coefs[i], refl_rms[i], &bc);

for (j=0; j < BLOCKSIZE; j++)
*samples++ = av_clip_int16(ractx->curr_sblock[j + 10] << 2);


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