* MPEG Audio decoder
*/
-#define UNCHECKED_BITSTREAM_READER 1
-
#include "libavutil/audioconvert.h"
#include "avcodec.h"
#include "get_bits.h"
#include "mathops.h"
#include "mpegaudiodsp.h"
+#include "dsputil.h"
/*
* TODO:
int err_recognition;
AVCodecContext* avctx;
MPADSPContext mpadsp;
+ DSPContext dsp;
AVFrame frame;
} MPADecodeContext;
for (i = 1; i < 16; i++) {
const HuffTable *h = &mpa_huff_tables[i];
int xsize, x, y;
- uint8_t tmp_bits [512];
- uint16_t tmp_codes[512];
-
- memset(tmp_bits , 0, sizeof(tmp_bits ));
- memset(tmp_codes, 0, sizeof(tmp_codes));
+ uint8_t tmp_bits [512] = { 0 };
+ uint16_t tmp_codes[512] = { 0 };
xsize = h->xsize;
s->avctx = avctx;
ff_mpadsp_init(&s->mpadsp);
+ ff_dsputil_init(&s->dsp, avctx);
avctx->sample_fmt= OUT_FMT;
s->err_recognition = avctx->err_recognition;
/* ms stereo ONLY */
/* NOTE: the 1/sqrt(2) normalization factor is included in the
global gain */
+#if CONFIG_FLOAT
+ s-> dsp.butterflies_float(g0->sb_hybrid, g1->sb_hybrid, 576);
+#else
tab0 = g0->sb_hybrid;
tab1 = g1->sb_hybrid;
for (i = 0; i < 576; i++) {
tab0[i] = tmp0 + tmp1;
tab1[i] = tmp0 - tmp1;
}
+#endif
}
}
}
if (!s->adu_mode) {
+ int skip;
const uint8_t *ptr = s->gb.buffer + (get_bits_count(&s->gb)>>3);
int extrasize = av_clip(get_bits_left(&s->gb) >> 3, 0, EXTRABYTES);
assert((get_bits_count(&s->gb) & 7) == 0);
#if !UNCHECKED_BITSTREAM_READER
s->gb.size_in_bits_plus8 += FFMAX(extrasize, LAST_BUF_SIZE - s->last_buf_size) * 8;
#endif
- skip_bits_long(&s->gb, 8*(s->last_buf_size - main_data_begin));
+ s->last_buf_size <<= 3;
+ for (gr = 0; gr < nb_granules && (s->last_buf_size >> 3) < main_data_begin; gr++) {
+ for (ch = 0; ch < s->nb_channels; ch++) {
+ g = &s->granules[ch][gr];
+ s->last_buf_size += g->part2_3_length;
+ memset(g->sb_hybrid, 0, sizeof(g->sb_hybrid));
+ }
+ }
+ skip = s->last_buf_size - 8 * main_data_begin;
+ if (skip >= s->gb.size_in_bits && s->in_gb.buffer) {
+ skip_bits_long(&s->in_gb, skip - s->gb.size_in_bits);
+ s->gb = s->in_gb;
+ s->in_gb.buffer = NULL;
+ } else {
+ skip_bits_long(&s->gb, skip);
+ }
+ } else {
+ gr = 0;
}
- for (gr = 0; gr < nb_granules; gr++) {
+ for (; gr < nb_granules; gr++) {
for (ch = 0; ch < s->nb_channels; ch++) {
g = &s->granules[ch][gr];
- if (get_bits_count(&s->gb) < 0) {
- av_log(s->avctx, AV_LOG_DEBUG, "mdb:%d, lastbuf:%d skipping granule %d\n",
- main_data_begin, s->last_buf_size, gr);
- skip_bits_long(&s->gb, g->part2_3_length);
- memset(g->sb_hybrid, 0, sizeof(g->sb_hybrid));
- if (get_bits_count(&s->gb) >= s->gb.size_in_bits && s->in_gb.buffer) {
- skip_bits_long(&s->in_gb, get_bits_count(&s->gb) - s->gb.size_in_bits);
- s->gb = s->in_gb;
- s->in_gb.buffer = NULL;
- }
- continue;
- }
-
bits_pos = get_bits_count(&s->gb);
if (!s->lsf) {
avctx->channel_layout = s->nb_channels == 1 ? AV_CH_LAYOUT_MONO : AV_CH_LAYOUT_STEREO;
if (!avctx->bit_rate)
avctx->bit_rate = s->bit_rate;
- avctx->sub_id = s->layer;
if (s->frame_size <= 0 || s->frame_size > buf_size) {
av_log(avctx, AV_LOG_ERROR, "incomplete frame\n");
avctx->channels = s->nb_channels;
if (!avctx->bit_rate)
avctx->bit_rate = s->bit_rate;
- avctx->sub_id = s->layer;
s->frame_size = len;