FFmpeg
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
h264chroma_init.c
Go to the documentation of this file.
1 /*
2  * Copyright (c) 2004 Romain Dolbeau <romain@dolbeau.org>
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 "config.h"
22 #include "libavutil/attributes.h"
23 #include "libavutil/cpu.h"
24 #include "libavutil/intreadwrite.h"
25 #include "libavutil/ppc/cpu.h"
28 #include "libavcodec/h264chroma.h"
29 
30 #if HAVE_ALTIVEC
31 #define PUT_OP_U8_ALTIVEC(d, s, dst) d = s
32 #define AVG_OP_U8_ALTIVEC(d, s, dst) d = vec_avg(dst, s)
33 
34 #define OP_U8_ALTIVEC PUT_OP_U8_ALTIVEC
35 #define PREFIX_h264_chroma_mc8_altivec put_h264_chroma_mc8_altivec
36 #define PREFIX_h264_chroma_mc8_num altivec_put_h264_chroma_mc8_num
37 #include "h264chroma_template.c"
38 #undef OP_U8_ALTIVEC
39 #undef PREFIX_h264_chroma_mc8_altivec
40 #undef PREFIX_h264_chroma_mc8_num
41 
42 #define OP_U8_ALTIVEC AVG_OP_U8_ALTIVEC
43 #define PREFIX_h264_chroma_mc8_altivec avg_h264_chroma_mc8_altivec
44 #define PREFIX_h264_chroma_mc8_num altivec_avg_h264_chroma_mc8_num
45 #include "h264chroma_template.c"
46 #undef OP_U8_ALTIVEC
47 #undef PREFIX_h264_chroma_mc8_altivec
48 #undef PREFIX_h264_chroma_mc8_num
49 #endif /* HAVE_ALTIVEC */
50 
52 {
53 #if HAVE_ALTIVEC
54  const int high_bit_depth = bit_depth > 8;
55 
57  return;
58 
59  if (!high_bit_depth) {
60  c->put_h264_chroma_pixels_tab[0] = put_h264_chroma_mc8_altivec;
61  c->avg_h264_chroma_pixels_tab[0] = avg_h264_chroma_mc8_altivec;
62  }
63 #endif /* HAVE_ALTIVEC */
64 }
av_cold void ff_h264chroma_init_ppc(H264ChromaContext *c, int bit_depth)
h264_chroma_mc_func put_h264_chroma_pixels_tab[4]
Definition: h264chroma.h:27
Macro definitions for various function/variable attributes.
#define av_cold
Definition: attributes.h:82
#define PPC_ALTIVEC(flags)
Definition: cpu.h:26
static void bit_depth(AudioStatsContext *s, uint64_t mask, uint64_t imask, AVRational *depth)
Definition: af_astats.c:150
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition: cpu.c:76
Contains misc utility macros and inline functions.
static double c[64]
h264_chroma_mc_func avg_h264_chroma_pixels_tab[4]
Definition: h264chroma.h:28