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xvididct_init.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 "config.h"
20 #include "libavutil/attributes.h"
21 #include "libavutil/cpu.h"
22 #include "libavutil/x86/cpu.h"
23 #include "libavcodec/idctdsp.h"
24 #include "libavcodec/xvididct.h"
25 
26 #include "idctdsp.h"
27 #include "xvididct.h"
28 
29 #if ARCH_X86_32 && HAVE_X86ASM
30 static void xvid_idct_mmx_put(uint8_t *dest, ptrdiff_t line_size, short *block)
31 {
32  ff_xvid_idct_mmx(block);
33  ff_put_pixels_clamped_mmx(block, dest, line_size);
34 }
35 
36 static void xvid_idct_mmx_add(uint8_t *dest, ptrdiff_t line_size, short *block)
37 {
38  ff_xvid_idct_mmx(block);
39  ff_add_pixels_clamped_mmx(block, dest, line_size);
40 }
41 
42 static void xvid_idct_mmxext_put(uint8_t *dest, ptrdiff_t line_size, short *block)
43 {
44  ff_xvid_idct_mmxext(block);
45  ff_put_pixels_clamped_mmx(block, dest, line_size);
46 }
47 
48 static void xvid_idct_mmxext_add(uint8_t *dest, ptrdiff_t line_size, short *block)
49 {
50  ff_xvid_idct_mmxext(block);
51  ff_add_pixels_clamped_mmx(block, dest, line_size);
52 }
53 #endif
54 
56  unsigned high_bit_depth)
57 {
58 #if HAVE_X86ASM
60 
61  if (high_bit_depth ||
62  !(avctx->idct_algo == FF_IDCT_AUTO ||
63  avctx->idct_algo == FF_IDCT_XVID))
64  return;
65 
66 #if ARCH_X86_32
67  if (EXTERNAL_MMX(cpu_flags)) {
68  c->idct_put = xvid_idct_mmx_put;
69  c->idct_add = xvid_idct_mmx_add;
72  }
73 
74  if (EXTERNAL_MMXEXT(cpu_flags)) {
75  c->idct_put = xvid_idct_mmxext_put;
76  c->idct_add = xvid_idct_mmxext_add;
79  }
80 #endif
81 
82  if (EXTERNAL_SSE2(cpu_flags)) {
87  }
88 #endif /* HAVE_X86ASM */
89 }
#define EXTERNAL_MMX(flags)
Definition: cpu.h:56
void ff_add_pixels_clamped_mmx(const int16_t *block, uint8_t *pixels, ptrdiff_t line_size)
void ff_xvid_idct_add_sse2(uint8_t *dest, ptrdiff_t line_size, short *block)
static atomic_int cpu_flags
Definition: cpu.c:50
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
#define EXTERNAL_SSE2(flags)
Definition: cpu.h:59
#define FF_IDCT_AUTO
Definition: avcodec.h:2698
#define FF_IDCT_XVID
Definition: avcodec.h:2705
void ff_xvid_idct_mmxext(short *block)
int idct_algo
IDCT algorithm, see FF_IDCT_* below.
Definition: avcodec.h:2697
void ff_xvid_idct_mmx(short *block)
av_cold void ff_xvid_idct_init_x86(IDCTDSPContext *c, AVCodecContext *avctx, unsigned high_bit_depth)
Definition: xvididct_init.c:55
main external API structure.
Definition: avcodec.h:1502
void ff_xvid_idct_put_sse2(uint8_t *dest, ptrdiff_t line_size, short *block)
void(* idct_add)(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
block -> idct -> add dest -> clip to unsigned 8 bit -> dest.
Definition: idctdsp.h:79
void ff_xvid_idct_sse2(short *block)
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition: cpu.c:92
#define EXTERNAL_MMXEXT(flags)
Definition: cpu.h:57
void(* idct_put)(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
block -> idct -> clip to unsigned 8 bit -> dest.
Definition: idctdsp.h:72
static double c[64]
void ff_put_pixels_clamped_mmx(const int16_t *block, uint8_t *pixels, ptrdiff_t line_size)
header for Xvid IDCT functions
enum idct_permutation_type perm_type
Definition: idctdsp.h:97
void(* idct)(int16_t *block)
Definition: idctdsp.h:65