FFmpeg: libavcodec/mlpdsp.h Source File

FFmpeg
mlpdsp.h
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1 /*
2  * MLP codec common header file
3  * Copyright (c) 2007-2008 Ian Caulfield
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 #ifndef AVCODEC_MLPDSP_H
23 #define AVCODEC_MLPDSP_H
24 
25 #include <stdint.h>
26 #include "mlp.h"
27 
28 void ff_mlp_rematrix_channel(int32_t *samples,
29  const int32_t *coeffs,
30  const uint8_t *bypassed_lsbs,
31  const int8_t *noise_buffer,
32  int index,
33  unsigned int dest_ch,
34  uint16_t blockpos,
35  unsigned int maxchan,
36  int matrix_noise_shift,
37  int access_unit_size_pow2,
38  int32_t mask);
39 
40 int32_t ff_mlp_pack_output(int32_t lossless_check_data,
41  uint16_t blockpos,
42  int32_t (*sample_buffer)[MAX_CHANNELS],
43  void *data,
44  uint8_t *ch_assign,
45  int8_t *output_shift,
46  uint8_t max_matrix_channel,
47  int is32);
48 
49  typedef struct MLPDSPContext {
50   void (*mlp_filter_channel)(int32_t *state, const int32_t *coeff,
51  int firorder, int iirorder,
52  unsigned int filter_shift, int32_t mask,
53  int blocksize, int32_t *sample_buffer);
54   void (*mlp_rematrix_channel)(int32_t *samples,
55  const int32_t *coeffs,
56  const uint8_t *bypassed_lsbs,
57  const int8_t *noise_buffer,
58  int index,
59  unsigned int dest_ch,
60  uint16_t blockpos,
61  unsigned int maxchan,
62  int matrix_noise_shift,
63  int access_unit_size_pow2,
64  int32_t mask);
65   int32_t (*(*mlp_select_pack_output)(uint8_t *ch_assign,
66  int8_t *output_shift,
67  uint8_t max_matrix_channel,
68   int is32))(int32_t, uint16_t, int32_t (*)[], void *, uint8_t*, int8_t *, uint8_t, int);
69   int32_t (*mlp_pack_output)(int32_t lossless_check_data,
70  uint16_t blockpos,
71  int32_t (*sample_buffer)[MAX_CHANNELS],
72  void *data,
73  uint8_t *ch_assign,
74  int8_t *output_shift,
75  uint8_t max_matrix_channel,
76  int is32);
77 } MLPDSPContext;
78 
79 void ff_mlpdsp_init(MLPDSPContext *c);
80 void ff_mlpdsp_init_arm(MLPDSPContext *c);
81 void ff_mlpdsp_init_x86(MLPDSPContext *c);
82 
83 #endif /* AVCODEC_MLPDSP_H */
MLPDSPContext::uint16_t
int32_t(*(* uint16_t)
Definition: mlpdsp.h:68
index
fg index
Definition: ffmpeg_filter.c:167
data
const char data[16]
Definition: mxf.c:143
MLPDSPContext::mlp_pack_output
int32_t(* mlp_pack_output)(int32_t lossless_check_data, uint16_t blockpos, int32_t(*sample_buffer)[MAX_CHANNELS], void *data, uint8_t *ch_assign, int8_t *output_shift, uint8_t max_matrix_channel, int is32)
Definition: mlpdsp.h:69
mask
static const uint16_t mask[17]
Definition: lzw.c:38
MLPDSPContext::void
int32_t(*(*) int32_t void)
Definition: mlpdsp.h:68
MLPDSPContext::mlp_filter_channel
void(* mlp_filter_channel)(int32_t *state, const int32_t *coeff, int firorder, int iirorder, unsigned int filter_shift, int32_t mask, int blocksize, int32_t *sample_buffer)
Definition: mlpdsp.h:50
ff_mlpdsp_init
void ff_mlpdsp_init(MLPDSPContext *c)
Definition: mlpdsp.c:128
MLPDSPContext::mlp_select_pack_output
int32_t(*(* mlp_select_pack_output)(uint8_t *ch_assign, int8_t *output_shift, uint8_t max_matrix_channel, int is32))(int32_t
Definition: mlpdsp.h:65
c
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
Definition: undefined.txt:32
state
static struct @320 state
MAX_CHANNELS
#define MAX_CHANNELS
Definition: aac.h:48
ff_mlpdsp_init_arm
void ff_mlpdsp_init_arm(MLPDSPContext *c)
Definition: mlpdsp_init_arm.c:136
MLPDSPContext::mlp_rematrix_channel
void(* mlp_rematrix_channel)(int32_t *samples, const int32_t *coeffs, const uint8_t *bypassed_lsbs, const int8_t *noise_buffer, int index, unsigned int dest_ch, uint16_t blockpos, unsigned int maxchan, int matrix_noise_shift, int access_unit_size_pow2, int32_t mask)
Definition: mlpdsp.h:54
ff_mlpdsp_init_x86
void ff_mlpdsp_init_x86(MLPDSPContext *c)
Definition: mlpdsp_init.c:196
samples
Filter the word "frame" indicates either a video frame or a group of audio samples
Definition: filter_design.txt:8
mlp.h
int32_t
int32_t
Definition: audioconvert.c:56
ff_mlp_pack_output
int32_t ff_mlp_pack_output(int32_t lossless_check_data, uint16_t blockpos, int32_t(*sample_buffer)[MAX_CHANNELS], void *data, uint8_t *ch_assign, int8_t *output_shift, uint8_t max_matrix_channel, int is32)
Definition: mlpdsp.c:100
coeff
static const double coeff[2][5]
Definition: vf_owdenoise.c:78
ff_mlp_rematrix_channel
void ff_mlp_rematrix_channel(int32_t *samples, const int32_t *coeffs, const uint8_t *bypassed_lsbs, const int8_t *noise_buffer, int index, unsigned int dest_ch, uint16_t blockpos, unsigned int maxchan, int matrix_noise_shift, int access_unit_size_pow2, int32_t mask)
Definition: mlpdsp.c:60
MLPDSPContext
Definition: mlpdsp.h:49
int
int
Definition: ffmpeg_filter.c:153
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