2 * This file is part of FFmpeg.
4 * FFmpeg is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
9 * FFmpeg is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with FFmpeg; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 #ifndef AVCODEC_DCADSP_H
20 #define AVCODEC_DCADSP_H
23 #include "synth_filter.h"
25 #define DCA_SUBBANDS_X96K 64
26 #define DCA_SUBBANDS 64
27 #define SAMPLES_PER_SUBBAND 8 // number of samples per subband per subsubframe
30 typedef struct DCADSPContext {
31 void (*lfe_fir[2])(float *out, const float *in, const float *coefs);
32 void (*qmf_32_subbands)(float samples_in[DCA_SUBBANDS][SAMPLES_PER_SUBBAND], int sb_act,
33 SynthFilterContext *synth, FFTContext *imdct,
34 float synth_buf_ptr[512],
35 int *synth_buf_offset, float synth_buf2[32],
36 const float window[512], float *samples_out,
37 float raXin[32], float scale);
38 void (*decode_hf)(int32_t dst[DCA_SUBBANDS][SAMPLES_PER_SUBBAND],
39 const int32_t vq_num[DCA_SUBBANDS],
40 const int8_t hf_vq[1024][32], intptr_t vq_offset,
41 int32_t scale[DCA_SUBBANDS][2],
42 intptr_t start, intptr_t end);
43 void (*dequantize)(int32_t *samples, uint32_t step_size, uint32_t scale);
46 void ff_dcadsp_init(DCADSPContext *s);
47 void ff_dcadsp_init_aarch64(DCADSPContext *s);
48 void ff_dcadsp_init_arm(DCADSPContext *s);
49 void ff_dcadsp_init_x86(DCADSPContext *s);
51 #endif /* AVCODEC_DCADSP_H */