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FFmpeg/libavcodec/dcadsp.h

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  1. /*

  2.  * This file is part of Libav.

  3.  *

  4.  * Libav 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.

  8.  *

  9.  * Libav 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.

  13.  *

  14.  * You should have received a copy of the GNU Lesser General Public

  15.  * License along with Libav; if not, write to the Free Software

  16.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

  17.  */

  18. 

  19. #ifndef AVCODEC_DCADSP_H

  20. #define AVCODEC_DCADSP_H

  21. 

  22. #include "avfft.h"

  23. #include "synth_filter.h"

  24. 

  25. #define DCA_SUBBANDS_X96K  64

  26. #define DCA_SUBBANDS       32

  27. #define SAMPLES_PER_SUBBAND 8 // number of samples per subband per subsubframe

  28. 

  29. 

  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);

  44. } DCADSPContext;

  45. 

  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);

  50. 

  51. #endif /* AVCODEC_DCADSP_H */