#include "nellymoser.h"
#include "libavutil/lfg.h"
#include "libavutil/random_seed.h"
-#include "libavcore/audioconvert.h"
+#include "libavutil/audioconvert.h"
#include "avcodec.h"
#include "dsputil.h"
#include "fft.h"
+#include "fmtconvert.h"
+#include "sinewin.h"
#define ALT_BITSTREAM_READER_LE
#include "get_bits.h"
typedef struct NellyMoserDecodeContext {
AVCodecContext* avctx;
- DECLARE_ALIGNED(16, float,float_buf)[NELLY_SAMPLES];
+ DECLARE_ALIGNED(32, float, float_buf)[NELLY_SAMPLES];
float state[128];
AVLFG random_state;
GetBitContext gb;
- int add_bias;
float scale_bias;
DSPContext dsp;
FFTContext imdct_ctx;
- DECLARE_ALIGNED(16, float,imdct_out)[NELLY_BUF_LEN * 2];
+ FmtConvertContext fmt_conv;
+ DECLARE_ALIGNED(32, float, imdct_out)[NELLY_BUF_LEN * 2];
} NellyMoserDecodeContext;
static void overlap_and_window(NellyMoserDecodeContext *s, float *state, float *audio, float *a_in)
while (bot < NELLY_BUF_LEN) {
audio[bot] = a_in [bot]*ff_sine_128[bot]
- +state[bot]*ff_sine_128[top] + s->add_bias;
+ +state[bot]*ff_sine_128[top];
bot++;
top--;
memset(&aptr[NELLY_FILL_LEN], 0,
(NELLY_BUF_LEN - NELLY_FILL_LEN) * sizeof(float));
- ff_imdct_calc(&s->imdct_ctx, s->imdct_out, aptr);
+ s->imdct_ctx.imdct_calc(&s->imdct_ctx, s->imdct_out, aptr);
/* XXX: overlapping and windowing should be part of a more
generic imdct function */
overlap_and_window(s, s->state, aptr, s->imdct_out);
ff_mdct_init(&s->imdct_ctx, 8, 1, 1.0);
dsputil_init(&s->dsp, avctx);
+ ff_fmt_convert_init(&s->fmt_conv, avctx);
- if(s->dsp.float_to_int16 == ff_float_to_int16_c) {
- s->add_bias = 385;
- s->scale_bias = 1.0/(8*32768);
- } else {
- s->add_bias = 0;
- s->scale_bias = 1.0/(1*8);
- }
+ s->scale_bias = 1.0/(1*8);
/* Generate overlap window */
if (!ff_sine_128[127])
for (i=0 ; i<blocks ; i++) {
nelly_decode_block(s, &buf[i*NELLY_BLOCK_LEN], s->float_buf);
- s->dsp.float_to_int16(&samples[i*NELLY_SAMPLES], s->float_buf, NELLY_SAMPLES);
+ s->fmt_conv.float_to_int16(&samples[i*NELLY_SAMPLES], s->float_buf, NELLY_SAMPLES);
*data_size += NELLY_SAMPLES*sizeof(int16_t);
}