* Copyright (c) 2008 Vladimir Voroshilov
* Copyright (c) 2009 Vitor Sessak
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
- * FFmpeg is distributed in the hope that it will be useful,
+ * Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "dsputil.h"
#include "acelp_pitch_delay.h"
+#define LP_FILTER_ORDER_16k 16
+#define L_SUBFR_16k 80
+#define PITCH_MIN 30
+#define PITCH_MAX 281
+
#define LSFQ_DIFF_MIN (0.0125 * M_PI)
#define LP_FILTER_ORDER 10
/** Subframe size for all modes except 16k */
#define SUBFR_SIZE 48
+#define SUBFRAME_COUNT_16k 2
+
typedef enum {
MODE_16k,
MODE_8k5,
typedef struct {
AVCodecContext *avctx;
- DSPContext dsp;
SiprMode mode;
float past_pitch_gain;
- float lsf_history[LP_FILTER_ORDER];
+ float lsf_history[LP_FILTER_ORDER_16k];
- float excitation[L_INTERPOL + PITCH_DELAY_MAX + 5*SUBFR_SIZE];
+ float excitation[L_INTERPOL + PITCH_MAX + 2 * L_SUBFR_16k];
- DECLARE_ALIGNED_16(float, synth_buf[LP_FILTER_ORDER + 5*SUBFR_SIZE + 6]);
+ DECLARE_ALIGNED(16, float, synth_buf)[LP_FILTER_ORDER + 5*SUBFR_SIZE + 6];
float lsp_history[LP_FILTER_ORDER];
float gain_mem;
float postfilter_agc;
float postfilter_mem5k0[PITCH_DELAY_MAX + LP_FILTER_ORDER];
float postfilter_syn5k0[LP_FILTER_ORDER + SUBFR_SIZE*5];
+
+ /* 16k */
+ int pitch_lag_prev;
+ float iir_mem[LP_FILTER_ORDER_16k+1];
+ float filt_buf[2][LP_FILTER_ORDER_16k+1];
+ float *filt_mem[2];
+ float mem_preemph[LP_FILTER_ORDER_16k];
+ float synth[LP_FILTER_ORDER_16k];
+ double lsp_history_16k[16];
} SiprContext;
typedef struct {
+ int ma_pred_switch; ///< switched moving average predictor
int vq_indexes[5];
int pitch_delay[5]; ///< pitch delay
int gp_index[5]; ///< adaptive-codebook gain indexes
int gc_index[5]; ///< fixed-codebook gain indexes
} SiprParameters;
+extern const float ff_pow_0_5[16];
+
+void ff_sipr_init_16k(SiprContext *ctx);
+
+void ff_sipr_decode_frame_16k(SiprContext *ctx, SiprParameters *params,
+ float *out_data);
+
#endif /* AVCODEC_SIPR_H */