FFmpeg
mlpdsp_init_arm.c
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1 /*
2  * Copyright (c) 2014 RISC OS Open Ltd
3  * Author: Ben Avison <bavison@riscosopen.org>
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 #include <stdint.h>
23 
24 #include "libavutil/arm/cpu.h"
25 #include "libavutil/attributes.h"
26 #include "libavcodec/mlpdsp.h"
27 
29  int firorder, int iirorder,
30  unsigned int filter_shift, int32_t mask,
31  int blocksize, int32_t *sample_buffer);
33  const int32_t *coeffs,
34  const uint8_t *bypassed_lsbs,
35  const int8_t *noise_buffer,
36  int index,
37  unsigned int dest_ch,
38  uint16_t blockpos,
39  unsigned int maxchan,
40  int matrix_noise_shift,
41  int access_unit_size_pow2,
42  int32_t mask);
43 
44 #define DECLARE_PACK(order,channels,shift) \
45  int32_t ff_mlp_pack_output_##order##order_##channels##ch_##shift##shift_armv6(int32_t, uint16_t, int32_t (*)[], void *, uint8_t*, int8_t *, uint8_t, int);
46 #define ENUMERATE_PACK(order,channels,shift) \
47  ff_mlp_pack_output_##order##order_##channels##ch_##shift##shift_armv6,
48 #define PACK_CHANNELS(macro,order,channels) \
49  macro(order,channels,0) \
50  macro(order,channels,1) \
51  macro(order,channels,2) \
52  macro(order,channels,3) \
53  macro(order,channels,4) \
54  macro(order,channels,5) \
55  macro(order,channels,mixed)
56 #define PACK_ORDER(macro,order) \
57  PACK_CHANNELS(macro,order,2) \
58  PACK_CHANNELS(macro,order,6) \
59  PACK_CHANNELS(macro,order,8)
60 #define PACK_ALL(macro) \
61  PACK_ORDER(macro,outof) \
62  PACK_ORDER(macro,in)
64 
65 #define ff_mlp_pack_output_outoforder_2ch_mixedshift_armv6 0
66 #define ff_mlp_pack_output_outoforder_6ch_mixedshift_armv6 0
67 #define ff_mlp_pack_output_outoforder_8ch_mixedshift_armv6 0
68 #if CONFIG_THUMB
69 #define ff_mlp_pack_output_outoforder_2ch_0shift_armv6 0
70 #define ff_mlp_pack_output_outoforder_2ch_1shift_armv6 0
71 #define ff_mlp_pack_output_outoforder_2ch_2shift_armv6 0
72 #define ff_mlp_pack_output_outoforder_2ch_3shift_armv6 0
73 #define ff_mlp_pack_output_outoforder_2ch_4shift_armv6 0
74 #define ff_mlp_pack_output_outoforder_2ch_5shift_armv6 0
75 #define ff_mlp_pack_output_outoforder_6ch_0shift_armv6 0
76 #define ff_mlp_pack_output_outoforder_6ch_1shift_armv6 0
77 #define ff_mlp_pack_output_outoforder_6ch_2shift_armv6 0
78 #define ff_mlp_pack_output_outoforder_6ch_3shift_armv6 0
79 #define ff_mlp_pack_output_outoforder_6ch_4shift_armv6 0
80 #define ff_mlp_pack_output_outoforder_6ch_5shift_armv6 0
81 #define ff_mlp_pack_output_outoforder_8ch_0shift_armv6 0
82 #define ff_mlp_pack_output_outoforder_8ch_1shift_armv6 0
83 #define ff_mlp_pack_output_outoforder_8ch_2shift_armv6 0
84 #define ff_mlp_pack_output_outoforder_8ch_3shift_armv6 0
85 #define ff_mlp_pack_output_outoforder_8ch_4shift_armv6 0
86 #define ff_mlp_pack_output_outoforder_8ch_5shift_armv6 0
87 #endif
88 
90  int8_t *output_shift,
91  uint8_t max_matrix_channel,
92  int is32))(int32_t, uint16_t, int32_t (*)[], void *, uint8_t*, int8_t *, uint8_t, int)
93 {
94  int ch_index;
95  int shift = output_shift[0] < 0 || output_shift[0] > 5 ? 6 : output_shift[0];
96  int inorder = 1;
97  static int32_t (*const routine[2*3*7])(int32_t, uint16_t, int32_t (*)[], void *, uint8_t*, int8_t *, uint8_t, int) = {
99  };
100  int i;
101 
102  if (!is32) // don't support 16-bit output (it's not used by TrueHD)
103  return ff_mlp_pack_output;
104 
105  switch (max_matrix_channel) {
106  case 1:
107  ch_index = 0;
108  break;
109  case 5:
110  ch_index = 1;
111  break;
112  case 7:
113  ch_index = 2;
114  break;
115  default:
116  return ff_mlp_pack_output;
117  }
118 
119  for (i = 0; i <= max_matrix_channel; i++) {
120  if (shift != 6 && output_shift[i] != shift)
121  shift = 6; // indicate mixed shifts
122  if (ch_assign[i] != i)
123  inorder = 0;
124  }
125 #if CONFIG_THUMB
126  if (!inorder)
127  return ff_mlp_pack_output; // can't currently handle an order array except in ARM mode
128 #else
129  if (shift == 6 && !inorder)
130  return ff_mlp_pack_output; // can't currently handle both an order array and a shift array
131 #endif
132 
133  return routine[(inorder*3+ch_index)*7+shift];
134 }
135 
137 {
138  int cpu_flags = av_get_cpu_flags();
139 
140  if (have_armv5te(cpu_flags)) {
143  }
144  if (have_armv6(cpu_flags))
146 }
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
static int shift(int a, int b)
Definition: sonic.c:82
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
#define have_armv6(flags)
Definition: cpu.h:26
#define ENUMERATE_PACK(order, channels, shift)
static atomic_int cpu_flags
Definition: cpu.c:50
Macro definitions for various function/variable attributes.
static struct @315 state
#define PACK_ALL(macro)
uint8_t
#define av_cold
Definition: attributes.h:82
#define have_armv5te(flags)
Definition: cpu.h:25
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
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
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:259
static const uint16_t mask[17]
Definition: lzw.c:38
static int32_t(*)(int32_t, uint16_t, int32_t(*)[], void *, uint8_t *, int8_t *, uint8_t, int) mlp_select_pack_output_armv6(uint8_t *ch_assign, int8_t *output_shift, uint8_t max_matrix_channel, int is32)
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
#define DECLARE_PACK(order, channels, shift)
int32_t
av_cold void ff_mlpdsp_init_arm(MLPDSPContext *c)
int index
Definition: gxfenc.c:89
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition: cpu.c:93
void ff_mlp_rematrix_channel_arm(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)
int
void ff_mlp_filter_channel_arm(int32_t *state, const int32_t *coeff, int firorder, int iirorder, unsigned int filter_shift, int32_t mask, int blocksize, int32_t *sample_buffer)
static const double coeff[2][5]
Definition: vf_owdenoise.c:72
Filter the word “frame” indicates either a video frame or a group of audio samples