#include "amr.h"
#include "amrwbdata.h"
+#include "mips/amrwbdec_mips.h"
typedef struct {
AVFrame avframe; ///< AVFrame for decoded samples
AVLFG prng; ///< random number generator for white noise excitation
uint8_t first_frame; ///< flag active during decoding of the first frame
+ ACELPFContext acelpf_ctx; ///< context for filters for ACELP-based codecs
+ ACELPVContext acelpv_ctx; ///< context for vector operations for ACELP-based codecs
+ CELPFContext celpf_ctx; ///< context for filters for CELP-based codecs
+ CELPMContext celpm_ctx; ///< context for fixed point math operations
+
} AMRWBContext;
static av_cold int amrwb_decode_init(AVCodecContext *avctx)
avcodec_get_frame_defaults(&ctx->avframe);
avctx->coded_frame = &ctx->avframe;
+ ff_acelp_filter_init(&ctx->acelpf_ctx);
+ ff_acelp_vectors_init(&ctx->acelpv_ctx);
+ ff_celp_filter_init(&ctx->celpf_ctx);
+ ff_celp_math_init(&ctx->celpm_ctx);
+
return 0;
}
/* Calculate the pitch vector by interpolating the past excitation at the
pitch lag using a hamming windowed sinc function */
- ff_acelp_interpolatef(exc, exc + 1 - pitch_lag_int,
+ ctx->acelpf_ctx.acelp_interpolatef(exc,
+ exc + 1 - pitch_lag_int,
ac_inter, 4,
pitch_lag_frac + (pitch_lag_frac > 0 ? 0 : 4),
LP_ORDER, AMRWB_SFR_SIZE + 1);
*
* @param[in] p_vector, f_vector Pitch and fixed excitation vectors
* @param[in] p_gain, f_gain Pitch and fixed gains
+ * @param[in] ctx The context
*/
// XXX: There is something wrong with the precision here! The magnitudes
// of the energies are not correct. Please check the reference code carefully
static float voice_factor(float *p_vector, float p_gain,
- float *f_vector, float f_gain)
+ float *f_vector, float f_gain,
+ CELPMContext *ctx)
{
- double p_ener = (double) ff_dot_productf(p_vector, p_vector,
+ double p_ener = (double) ctx->dot_productf(p_vector, p_vector,
AMRWB_SFR_SIZE) * p_gain * p_gain;
- double f_ener = (double) ff_dot_productf(f_vector, f_vector,
+ double f_ener = (double) ctx->dot_productf(f_vector, f_vector,
AMRWB_SFR_SIZE) * f_gain * f_gain;
return (p_ener - f_ener) / (p_ener + f_ener);
float fixed_gain, const float *fixed_vector,
float *samples)
{
- ff_weighted_vector_sumf(excitation, ctx->pitch_vector, fixed_vector,
+ ctx->acelpv_ctx.weighted_vector_sumf(excitation, ctx->pitch_vector, fixed_vector,
ctx->pitch_gain[0], fixed_gain, AMRWB_SFR_SIZE);
/* emphasize pitch vector contribution in low bitrate modes */
if (ctx->pitch_gain[0] > 0.5 && ctx->fr_cur_mode <= MODE_8k85) {
int i;
- float energy = ff_dot_productf(excitation, excitation,
+ float energy = ctx->celpm_ctx.dot_productf(excitation, excitation,
AMRWB_SFR_SIZE);
// XXX: Weird part in both ref code and spec. A unknown parameter
energy, AMRWB_SFR_SIZE);
}
- ff_celp_lp_synthesis_filterf(samples, lpc, excitation,
+ ctx->celpf_ctx.celp_lp_synthesis_filterf(samples, lpc, excitation,
AMRWB_SFR_SIZE, LP_ORDER);
}
* @param[out] out Buffer for interpolated signal
* @param[in] in Current signal data (length 0.8*o_size)
* @param[in] o_size Output signal length
+ * @param[in] ctx The context
*/
-static void upsample_5_4(float *out, const float *in, int o_size)
+static void upsample_5_4(float *out, const float *in, int o_size, CELPMContext *ctx)
{
const float *in0 = in - UPS_FIR_SIZE + 1;
int i, j, k;
i++;
for (k = 1; k < 5; k++) {
- out[i] = ff_dot_productf(in0 + int_part, upsample_fir[4 - frac_part],
+ out[i] = ctx->dot_productf(in0 + int_part,
+ upsample_fir[4 - frac_part],
UPS_MEM_SIZE);
int_part++;
frac_part--;
if (ctx->fr_cur_mode == MODE_23k85)
return qua_hb_gain[hb_idx] * (1.0f / (1 << 14));
- tilt = ff_dot_productf(synth, synth + 1, AMRWB_SFR_SIZE - 1) /
- ff_dot_productf(synth, synth, AMRWB_SFR_SIZE);
+ tilt = ctx->celpm_ctx.dot_productf(synth, synth + 1, AMRWB_SFR_SIZE - 1) /
+ ctx->celpm_ctx.dot_productf(synth, synth, AMRWB_SFR_SIZE);
/* return gain bounded by [0.1, 1.0] */
return av_clipf((1.0 - FFMAX(0.0, tilt)) * (1.25 - 0.25 * wsp), 0.1, 1.0);
const float *synth_exc, float hb_gain)
{
int i;
- float energy = ff_dot_productf(synth_exc, synth_exc, AMRWB_SFR_SIZE);
+ float energy = ctx->celpm_ctx.dot_productf(synth_exc, synth_exc, AMRWB_SFR_SIZE);
/* Generate a white-noise excitation */
for (i = 0; i < AMRWB_SFR_SIZE_16k; i++)
float e_isf[LP_ORDER_16k]; // ISF vector for extrapolation
double e_isp[LP_ORDER_16k];
- ff_weighted_vector_sumf(e_isf, isf_past, isf, isfp_inter[subframe],
+ ctx->acelpv_ctx.weighted_vector_sumf(e_isf, isf_past, isf, isfp_inter[subframe],
1.0 - isfp_inter[subframe], LP_ORDER);
extrapolate_isf(e_isf);
lpc_weighting(hb_lpc, ctx->lp_coef[subframe], 0.6, LP_ORDER);
}
- ff_celp_lp_synthesis_filterf(samples, hb_lpc, exc, AMRWB_SFR_SIZE_16k,
+ ctx->celpf_ctx.celp_lp_synthesis_filterf(samples, hb_lpc, exc, AMRWB_SFR_SIZE_16k,
(mode == MODE_6k60) ? LP_ORDER_16k : LP_ORDER);
}
*
* @remark It is safe to pass the same array in in and out parameters
*/
+
+#ifndef hb_fir_filter
static void hb_fir_filter(float *out, const float fir_coef[HB_FIR_SIZE + 1],
float mem[HB_FIR_SIZE], const float *in)
{
memcpy(mem, data + AMRWB_SFR_SIZE_16k, HB_FIR_SIZE * sizeof(float));
}
+#endif /* hb_fir_filter */
/**
* Update context state before the next subframe.
ctx->fixed_gain[0] =
ff_amr_set_fixed_gain(fixed_gain_factor,
- ff_dot_productf(ctx->fixed_vector, ctx->fixed_vector,
+ ctx->celpm_ctx.dot_productf(ctx->fixed_vector, ctx->fixed_vector,
AMRWB_SFR_SIZE) / AMRWB_SFR_SIZE,
ctx->prediction_error,
ENERGY_MEAN, energy_pred_fac);
/* Calculate voice factor and store tilt for next subframe */
voice_fac = voice_factor(ctx->pitch_vector, ctx->pitch_gain[0],
- ctx->fixed_vector, ctx->fixed_gain[0]);
+ ctx->fixed_vector, ctx->fixed_gain[0],
+ &ctx->celpm_ctx);
ctx->tilt_coef = voice_fac * 0.25 + 0.25;
/* Construct current excitation */
de_emphasis(&ctx->samples_up[UPS_MEM_SIZE],
&ctx->samples_az[LP_ORDER], PREEMPH_FAC, ctx->demph_mem);
- ff_acelp_apply_order_2_transfer_function(&ctx->samples_up[UPS_MEM_SIZE],
+ ctx->acelpf_ctx.acelp_apply_order_2_transfer_function(&ctx->samples_up[UPS_MEM_SIZE],
&ctx->samples_up[UPS_MEM_SIZE], hpf_zeros, hpf_31_poles,
hpf_31_gain, ctx->hpf_31_mem, AMRWB_SFR_SIZE);
upsample_5_4(sub_buf, &ctx->samples_up[UPS_FIR_SIZE],
- AMRWB_SFR_SIZE_16k);
+ AMRWB_SFR_SIZE_16k, &ctx->celpm_ctx);
/* High frequency band (6.4 - 7.0 kHz) generation part */
- ff_acelp_apply_order_2_transfer_function(hb_samples,
+ ctx->acelpf_ctx.acelp_apply_order_2_transfer_function(hb_samples,
&ctx->samples_up[UPS_MEM_SIZE], hpf_zeros, hpf_400_poles,
hpf_400_gain, ctx->hpf_400_mem, AMRWB_SFR_SIZE);
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