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pixblockdsp.c
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1 /*
2  * This file is part of FFmpeg.
3  *
4  * FFmpeg is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * FFmpeg is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with FFmpeg; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17  */
18 
19 #include <stdint.h>
20 
21 #include "config.h"
22 #include "libavutil/attributes.h"
23 #include "libavutil/intreadwrite.h"
24 #include "avcodec.h"
25 #include "pixblockdsp.h"
26 
27 static void get_pixels_16_c(int16_t *av_restrict block, const uint8_t *pixels,
28  ptrdiff_t stride)
29 {
30  AV_COPY128U(block + 0 * 8, pixels + 0 * stride);
31  AV_COPY128U(block + 1 * 8, pixels + 1 * stride);
32  AV_COPY128U(block + 2 * 8, pixels + 2 * stride);
33  AV_COPY128U(block + 3 * 8, pixels + 3 * stride);
34  AV_COPY128U(block + 4 * 8, pixels + 4 * stride);
35  AV_COPY128U(block + 5 * 8, pixels + 5 * stride);
36  AV_COPY128U(block + 6 * 8, pixels + 6 * stride);
37  AV_COPY128U(block + 7 * 8, pixels + 7 * stride);
38 }
39 
40 static void get_pixels_8_c(int16_t *av_restrict block, const uint8_t *pixels,
41  ptrdiff_t stride)
42 {
43  int i;
44 
45  /* read the pixels */
46  for (i = 0; i < 8; i++) {
47  block[0] = pixels[0];
48  block[1] = pixels[1];
49  block[2] = pixels[2];
50  block[3] = pixels[3];
51  block[4] = pixels[4];
52  block[5] = pixels[5];
53  block[6] = pixels[6];
54  block[7] = pixels[7];
55  pixels += stride;
56  block += 8;
57  }
58 }
59 
60 static void diff_pixels_c(int16_t *av_restrict block, const uint8_t *s1,
61  const uint8_t *s2, ptrdiff_t stride)
62 {
63  int i;
64 
65  /* read the pixels */
66  for (i = 0; i < 8; i++) {
67  block[0] = s1[0] - s2[0];
68  block[1] = s1[1] - s2[1];
69  block[2] = s1[2] - s2[2];
70  block[3] = s1[3] - s2[3];
71  block[4] = s1[4] - s2[4];
72  block[5] = s1[5] - s2[5];
73  block[6] = s1[6] - s2[6];
74  block[7] = s1[7] - s2[7];
75  s1 += stride;
76  s2 += stride;
77  block += 8;
78  }
79 }
80 
82 {
83  const unsigned high_bit_depth = avctx->bits_per_raw_sample > 8;
84 
87 
88  switch (avctx->bits_per_raw_sample) {
89  case 9:
90  case 10:
91  case 12:
92  case 14:
94  break;
95  default:
96  if (avctx->bits_per_raw_sample<=8 || avctx->codec_type != AVMEDIA_TYPE_VIDEO) {
98  }
99  break;
100  }
101 
102  if (ARCH_ALPHA)
103  ff_pixblockdsp_init_alpha(c, avctx, high_bit_depth);
104  if (ARCH_ARM)
105  ff_pixblockdsp_init_arm(c, avctx, high_bit_depth);
106  if (ARCH_PPC)
107  ff_pixblockdsp_init_ppc(c, avctx, high_bit_depth);
108  if (ARCH_X86)
109  ff_pixblockdsp_init_x86(c, avctx, high_bit_depth);
110  if (ARCH_MIPS)
111  ff_pixblockdsp_init_mips(c, avctx, high_bit_depth);
112 }
static void diff_pixels_c(int16_t *av_restrict block, const uint8_t *s1, const uint8_t *s2, ptrdiff_t stride)
Definition: pixblockdsp.c:60
void ff_pixblockdsp_init_mips(PixblockDSPContext *c, AVCodecContext *avctx, unsigned high_bit_depth)
int bits_per_raw_sample
Bits per sample/pixel of internal libavcodec pixel/sample format.
Definition: avcodec.h:2725
static void get_pixels_16_c(int16_t *av_restrict block, const uint8_t *pixels, ptrdiff_t stride)
Definition: pixblockdsp.c:27
av_cold void ff_pixblockdsp_init_alpha(PixblockDSPContext *c, AVCodecContext *avctx, unsigned high_bit_depth)
Macro definitions for various function/variable attributes.
static int16_t block[64]
Definition: dct.c:115
uint8_t
#define av_cold
Definition: attributes.h:82
void(* diff_pixels)(int16_t *av_restrict block, const uint8_t *s1, const uint8_t *s2, ptrdiff_t stride)
Definition: pixblockdsp.h:32
#define AV_COPY128U(d, s)
Definition: intreadwrite.h:565
#define s2
Definition: regdef.h:39
void(* get_pixels)(int16_t *av_restrict block, const uint8_t *pixels, ptrdiff_t stride)
Definition: pixblockdsp.h:29
av_cold void ff_pixblockdsp_init(PixblockDSPContext *c, AVCodecContext *avctx)
Definition: pixblockdsp.c:81
av_cold void ff_pixblockdsp_init_arm(PixblockDSPContext *c, AVCodecContext *avctx, unsigned high_bit_depth)
void ff_pixblockdsp_init_x86(PixblockDSPContext *c, AVCodecContext *avctx, unsigned high_bit_depth)
Libavcodec external API header.
enum AVMediaType codec_type
Definition: avcodec.h:1510
main external API structure.
Definition: avcodec.h:1502
av_cold void ff_pixblockdsp_init_ppc(PixblockDSPContext *c, AVCodecContext *avctx, unsigned high_bit_depth)
Definition: pixblockdsp.c:265
static void get_pixels_8_c(int16_t *av_restrict block, const uint8_t *pixels, ptrdiff_t stride)
Definition: pixblockdsp.c:40
#define s1
Definition: regdef.h:38
GLint GLenum GLboolean GLsizei stride
Definition: opengl_enc.c:105
static double c[64]
int pixels
Definition: avisynth_c.h:429
void(* diff_pixels_unaligned)(int16_t *av_restrict block, const uint8_t *s1, const uint8_t *s2, ptrdiff_t stride)
Definition: pixblockdsp.h:36
#define stride