FFmpeg
ttadsp_init.c
Go to the documentation of this file.
1 /*
2  * Copyright (c) 2014 James Almer
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #include "libavutil/attributes.h"
22 #include "libavcodec/ttadsp.h"
23 #include "libavutil/x86/cpu.h"
24 #include "config.h"
25 
28  int32_t round);
31  int32_t round);
32 
34 {
35 #if HAVE_X86ASM
37 
39  c->filter_process = ff_tta_filter_process_ssse3;
41  c->filter_process = ff_tta_filter_process_sse4;
42 #endif
43 }
error
static void error(const char *err)
Definition: target_bsf_fuzzer.c:30
cpu.h
av_get_cpu_flags
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition: cpu.c:95
cpu_flags
static atomic_int cpu_flags
Definition: cpu.c:50
av_cold
#define av_cold
Definition: attributes.h:90
ff_tta_filter_process_ssse3
void ff_tta_filter_process_ssse3(int32_t *qm, int32_t *dx, int32_t *dl, int32_t *error, int32_t *in, int32_t shift, int32_t round)
TTADSPContext
Definition: ttadsp.h:24
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
ff_tta_filter_process_sse4
void ff_tta_filter_process_sse4(int32_t *qm, int32_t *dx, int32_t *dl, int32_t *error, int32_t *in, int32_t shift, int32_t round)
ff_ttadsp_init_x86
av_cold void ff_ttadsp_init_x86(TTADSPContext *c)
Definition: ttadsp_init.c:33
attributes.h
round
static av_always_inline av_const double round(double x)
Definition: libm.h:444
EXTERNAL_SSE4
#define EXTERNAL_SSE4(flags)
Definition: cpu.h:68
shift
static int shift(int a, int b)
Definition: sonic.c:82
ttadsp.h
int32_t
int32_t
Definition: audioconvert.c:56
EXTERNAL_SSSE3
#define EXTERNAL_SSSE3(flags)
Definition: cpu.h:65