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g72x: Convert to the new bitstream reader

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Signed-off-by: Anton Khirnov <anton@khirnov.net>
pull/117/merge
Alexandra Hájková 9 years ago committed by Anton Khirnov
parent 799703c3ea
commit 2188d53906
3 changed files with 49 additions and 47 deletions
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  1. 13
      libavcodec/g722dec.c
  2. 72
      libavcodec/g723_1dec.c
  3. 11
      libavcodec/g726.c

13
libavcodec/g722dec.c
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@ -36,8 +36,9 @@
#include "libavutil/channel_layout.h"
#include "libavutil/opt.h"
#include "avcodec.h"
#include "get_bits.h"
#include "bitstream.h"
#include "g722.h"
#include "internal.h"
@ -92,7 +93,7 @@ static int g722_decode_frame(AVCodecContext *avctx, void *data,
int j, ret;
const int skip = 8 - c->bits_per_codeword;
const int16_t *quantizer_table = low_inv_quants[skip];
GetBitContext gb;
BitstreamContext bc;
/* get output buffer */
frame->nb_samples = avpkt->size * 2;
@ -102,15 +103,15 @@ static int g722_decode_frame(AVCodecContext *avctx, void *data,
}
out_buf = (int16_t *)frame->data[0];
init_get_bits(&gb, avpkt->data, avpkt->size * 8);
bitstream_init(&bc, avpkt->data, avpkt->size * 8);
for (j = 0; j < avpkt->size; j++) {
int ilow, ihigh, rlow, rhigh, dhigh;
int xout[2];
ihigh = get_bits(&gb, 2);
ilow = get_bits(&gb, 6 - skip);
skip_bits(&gb, skip);
ihigh = bitstream_read(&bc, 2);
ilow = bitstream_read(&bc, 6 - skip);
bitstream_skip(&bc, skip);
rlow = av_clip_intp2((c->band[0].scale_factor * quantizer_table[ilow] >> 10)
+ c->band[0].s_predictor, 14);

72
libavcodec/g723_1dec.c
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@ -32,8 +32,8 @@
#define BITSTREAM_READER_LE
#include "acelp_vectors.h"
#include "avcodec.h"
#include "bitstream.h"
#include "celp_filters.h"
#include "get_bits.h"
#include "internal.h"
#include "g723_1.h"
@ -68,14 +68,14 @@ static av_cold int g723_1_decode_init(AVCodecContext *avctx)
static int unpack_bitstream(G723_1_Context *p, const uint8_t *buf,
int buf_size)
{
GetBitContext gb;
BitstreamContext bc;
int ad_cb_len;
int temp, info_bits, i;
init_get_bits(&gb, buf, buf_size * 8);
bitstream_init(&bc, buf, buf_size * 8);
/* Extract frame type and rate info */
info_bits = get_bits(&gb, 2);
info_bits = bitstream_read(&bc, 2);
if (info_bits == 3) {
p->cur_frame_type = UNTRANSMITTED_FRAME;
@ -83,13 +83,13 @@ static int unpack_bitstream(G723_1_Context *p, const uint8_t *buf,
}
/* Extract 24 bit lsp indices, 8 bit for each band */
p->lsp_index[2] = get_bits(&gb, 8);
p->lsp_index[1] = get_bits(&gb, 8);
p->lsp_index[0] = get_bits(&gb, 8);
p->lsp_index[2] = bitstream_read(&bc, 8);
p->lsp_index[1] = bitstream_read(&bc, 8);
p->lsp_index[0] = bitstream_read(&bc, 8);
if (info_bits == 2) {
p->cur_frame_type = SID_FRAME;
p->subframe[0].amp_index = get_bits(&gb, 6);
p->subframe[0].amp_index = bitstream_read(&bc, 6);
return 0;
}
@ -97,23 +97,23 @@ static int unpack_bitstream(G723_1_Context *p, const uint8_t *buf,
p->cur_rate = info_bits ? RATE_5300 : RATE_6300;
p->cur_frame_type = ACTIVE_FRAME;
p->pitch_lag[0] = get_bits(&gb, 7);
p->pitch_lag[0] = bitstream_read(&bc, 7);
if (p->pitch_lag[0] > 123) /* test if forbidden code */
return -1;
p->pitch_lag[0] += PITCH_MIN;
p->subframe[1].ad_cb_lag = get_bits(&gb, 2);
p->subframe[1].ad_cb_lag = bitstream_read(&bc, 2);
p->pitch_lag[1] = get_bits(&gb, 7);
p->pitch_lag[1] = bitstream_read(&bc, 7);
if (p->pitch_lag[1] > 123)
return -1;
p->pitch_lag[1] += PITCH_MIN;
p->subframe[3].ad_cb_lag = get_bits(&gb, 2);
p->subframe[3].ad_cb_lag = bitstream_read(&bc, 2);
p->subframe[0].ad_cb_lag = 1;
p->subframe[2].ad_cb_lag = 1;
for (i = 0; i < SUBFRAMES; i++) {
/* Extract combined gain */
temp = get_bits(&gb, 12);
temp = bitstream_read(&bc, 12);
ad_cb_len = 170;
p->subframe[i].dirac_train = 0;
if (p->cur_rate == RATE_6300 && p->pitch_lag[i >> 1] < SUBFRAME_LEN - 2) {
@ -130,16 +130,16 @@ static int unpack_bitstream(G723_1_Context *p, const uint8_t *buf,
}
}
p->subframe[0].grid_index = get_bits(&gb, 1);
p->subframe[1].grid_index = get_bits(&gb, 1);
p->subframe[2].grid_index = get_bits(&gb, 1);
p->subframe[3].grid_index = get_bits(&gb, 1);
p->subframe[0].grid_index = bitstream_read(&bc, 1);
p->subframe[1].grid_index = bitstream_read(&bc, 1);
p->subframe[2].grid_index = bitstream_read(&bc, 1);
p->subframe[3].grid_index = bitstream_read(&bc, 1);
if (p->cur_rate == RATE_6300) {
skip_bits(&gb, 1); /* skip reserved bit */
bitstream_skip(&bc, 1); /* skip reserved bit */
/* Compute pulse_pos index using the 13-bit combined position index */
temp = get_bits(&gb, 13);
temp = bitstream_read(&bc, 13);
p->subframe[0].pulse_pos = temp / 810;
temp -= p->subframe[0].pulse_pos * 810;
@ -150,28 +150,28 @@ static int unpack_bitstream(G723_1_Context *p, const uint8_t *buf,
p->subframe[3].pulse_pos = temp - p->subframe[2].pulse_pos * 9;
p->subframe[0].pulse_pos = (p->subframe[0].pulse_pos << 16) +
get_bits(&gb, 16);
bitstream_read(&bc, 16);
p->subframe[1].pulse_pos = (p->subframe[1].pulse_pos << 14) +
get_bits(&gb, 14);
bitstream_read(&bc, 14);
p->subframe[2].pulse_pos = (p->subframe[2].pulse_pos << 16) +
get_bits(&gb, 16);
bitstream_read(&bc, 16);
p->subframe[3].pulse_pos = (p->subframe[3].pulse_pos << 14) +
get_bits(&gb, 14);
bitstream_read(&bc, 14);
p->subframe[0].pulse_sign = get_bits(&gb, 6);
p->subframe[1].pulse_sign = get_bits(&gb, 5);
p->subframe[2].pulse_sign = get_bits(&gb, 6);
p->subframe[3].pulse_sign = get_bits(&gb, 5);
p->subframe[0].pulse_sign = bitstream_read(&bc, 6);
p->subframe[1].pulse_sign = bitstream_read(&bc, 5);
p->subframe[2].pulse_sign = bitstream_read(&bc, 6);
p->subframe[3].pulse_sign = bitstream_read(&bc, 5);
} else { /* 5300 bps */
p->subframe[0].pulse_pos = get_bits(&gb, 12);
p->subframe[1].pulse_pos = get_bits(&gb, 12);
p->subframe[2].pulse_pos = get_bits(&gb, 12);
p->subframe[3].pulse_pos = get_bits(&gb, 12);
p->subframe[0].pulse_sign = get_bits(&gb, 4);
p->subframe[1].pulse_sign = get_bits(&gb, 4);
p->subframe[2].pulse_sign = get_bits(&gb, 4);
p->subframe[3].pulse_sign = get_bits(&gb, 4);
p->subframe[0].pulse_pos = bitstream_read(&bc, 12);
p->subframe[1].pulse_pos = bitstream_read(&bc, 12);
p->subframe[2].pulse_pos = bitstream_read(&bc, 12);
p->subframe[3].pulse_pos = bitstream_read(&bc, 12);
p->subframe[0].pulse_sign = bitstream_read(&bc, 4);
p->subframe[1].pulse_sign = bitstream_read(&bc, 4);
p->subframe[2].pulse_sign = bitstream_read(&bc, 4);
p->subframe[3].pulse_sign = bitstream_read(&bc, 4);
}
return 0;

11
libavcodec/g726.c
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@ -25,9 +25,10 @@
#include "libavutil/channel_layout.h"
#include "libavutil/opt.h"
#include "avcodec.h"
#include "bitstream.h"
#include "internal.h"
#include "get_bits.h"
#include "put_bits.h"
/**
@ -429,7 +430,7 @@ static int g726_decode_frame(AVCodecContext *avctx, void *data,
int buf_size = avpkt->size;
G726Context *c = avctx->priv_data;
int16_t *samples;
GetBitContext gb;
BitstreamContext bc;
int out_samples, ret;
out_samples = buf_size * 8 / c->code_size;
@ -442,12 +443,12 @@ static int g726_decode_frame(AVCodecContext *avctx, void *data,
}
samples = (int16_t *)frame->data[0];
init_get_bits(&gb, buf, buf_size * 8);
bitstream_init(&bc, buf, buf_size * 8);
while (out_samples--)
*samples++ = g726_decode(c, get_bits(&gb, c->code_size));
*samples++ = g726_decode(c, bitstream_read(&bc, c->code_size));
if (get_bits_left(&gb) > 0)
if (bitstream_bits_left(&bc) > 0)
av_log(avctx, AV_LOG_ERROR, "Frame invalidly split, missing parser?\n");
*got_frame_ptr = 1;

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