FFmpeg
h264chroma_init_mips.c
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1 /*
2  * Copyright (c) 2015 Zhou Xiaoyong <zhouxiaoyong@loongson.cn>
3  * Copyright (c) 2015 Shivraj Patil (Shivraj.Patil@imgtec.com)
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 "libavutil/mips/cpu.h"
23 #include "h264chroma_mips.h"
24 
25 
26 av_cold void ff_h264chroma_init_mips(H264ChromaContext *c, int bit_depth)
27 {
28  int cpu_flags = av_get_cpu_flags();
29  int high_bit_depth = bit_depth > 8;
30 
31  /* MMI apears to be faster than MSA here */
32  if (have_msa(cpu_flags)) {
33  if (!high_bit_depth) {
34  c->put_h264_chroma_pixels_tab[0] = ff_put_h264_chroma_mc8_msa;
35  c->put_h264_chroma_pixels_tab[1] = ff_put_h264_chroma_mc4_msa;
36  c->put_h264_chroma_pixels_tab[2] = ff_put_h264_chroma_mc2_msa;
37 
38  c->avg_h264_chroma_pixels_tab[0] = ff_avg_h264_chroma_mc8_msa;
39  c->avg_h264_chroma_pixels_tab[1] = ff_avg_h264_chroma_mc4_msa;
40  c->avg_h264_chroma_pixels_tab[2] = ff_avg_h264_chroma_mc2_msa;
41  }
42  }
43 
44  if (have_mmi(cpu_flags)) {
45  if (!high_bit_depth) {
46  c->put_h264_chroma_pixels_tab[0] = ff_put_h264_chroma_mc8_mmi;
47  c->avg_h264_chroma_pixels_tab[0] = ff_avg_h264_chroma_mc8_mmi;
48  c->put_h264_chroma_pixels_tab[1] = ff_put_h264_chroma_mc4_mmi;
49  c->avg_h264_chroma_pixels_tab[1] = ff_avg_h264_chroma_mc4_mmi;
50  }
51  }
52 }
ff_put_h264_chroma_mc8_mmi
void ff_put_h264_chroma_mc8_mmi(uint8_t *dst, uint8_t *src, ptrdiff_t stride, int h, int x, int y)
Definition: h264chroma_mmi.c:29
bit_depth
static void bit_depth(AudioStatsContext *s, uint64_t mask, uint64_t imask, AVRational *depth)
Definition: af_astats.c:254
have_mmi
#define have_mmi(flags)
Definition: cpu.h:25
h264chroma_mips.h
ff_avg_h264_chroma_mc2_msa
void ff_avg_h264_chroma_mc2_msa(uint8_t *dst, uint8_t *src, ptrdiff_t stride, int height, int x, int y)
Definition: h264chroma_msa.c:1996
ff_avg_h264_chroma_mc4_msa
void ff_avg_h264_chroma_mc4_msa(uint8_t *dst, uint8_t *src, ptrdiff_t stride, int height, int x, int y)
Definition: h264chroma_msa.c:1979
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
ff_h264chroma_init_mips
av_cold void ff_h264chroma_init_mips(H264ChromaContext *c, int bit_depth)
Definition: h264chroma_init_mips.c:26
av_cold
#define av_cold
Definition: attributes.h:90
ff_put_h264_chroma_mc8_msa
void ff_put_h264_chroma_mc8_msa(uint8_t *dst, uint8_t *src, ptrdiff_t stride, int height, int x, int y)
Definition: h264chroma_msa.c:1906
have_msa
#define have_msa(flags)
Definition: cpu.h:26
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_avg_h264_chroma_mc8_msa
void ff_avg_h264_chroma_mc8_msa(uint8_t *dst, uint8_t *src, ptrdiff_t stride, int height, int x, int y)
Definition: h264chroma_msa.c:1961
ff_avg_h264_chroma_mc8_mmi
void ff_avg_h264_chroma_mc8_mmi(uint8_t *dst, uint8_t *src, ptrdiff_t stride, int h, int x, int y)
Definition: h264chroma_mmi.c:290
ff_put_h264_chroma_mc4_mmi
void ff_put_h264_chroma_mc4_mmi(uint8_t *dst, uint8_t *src, ptrdiff_t stride, int h, int x, int y)
Definition: h264chroma_mmi.c:497
ff_avg_h264_chroma_mc4_mmi
void ff_avg_h264_chroma_mc4_mmi(uint8_t *dst, uint8_t *src, ptrdiff_t stride, int h, int x, int y)
Definition: h264chroma_mmi.c:621
ff_put_h264_chroma_mc2_msa
void ff_put_h264_chroma_mc2_msa(uint8_t *dst, uint8_t *src, ptrdiff_t stride, int height, int x, int y)
Definition: h264chroma_msa.c:1938
H264ChromaContext
Definition: h264chroma.h:27
cpu.h
ff_put_h264_chroma_mc4_msa
void ff_put_h264_chroma_mc4_msa(uint8_t *dst, uint8_t *src, ptrdiff_t stride, int height, int x, int y)
Definition: h264chroma_msa.c:1922
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