ppc: idctdsp: Immediately return if no AltiVec is available
[libav.git] / libavcodec / x86 / dct-test.c
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1/*
2 * This file is part of Libav.
3 *
4 * Libav 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 * Libav 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 Libav; 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
21#include "fdct.h"
22#include "idct_xvid.h"
23#include "simple_idct.h"
24
25static const struct algo fdct_tab_arch[] = {
26#if HAVE_MMX_INLINE
27 { "MMX", ff_fdct_mmx, FF_IDCT_PERM_NONE, AV_CPU_FLAG_MMX },
28#endif
29#if HAVE_MMXEXT_INLINE
30 { "MMXEXT", ff_fdct_mmxext, FF_IDCT_PERM_NONE, AV_CPU_FLAG_MMXEXT },
31#endif
32#if HAVE_SSE2_INLINE
33 { "SSE2", ff_fdct_sse2, FF_IDCT_PERM_NONE, AV_CPU_FLAG_SSE2 },
34#endif
35 { 0 }
36};
37
38static const struct algo idct_tab_arch[] = {
39#if HAVE_MMX_INLINE
40 { "SIMPLE-MMX", ff_simple_idct_mmx, FF_IDCT_PERM_SIMPLE, AV_CPU_FLAG_MMX },
41 { "XVID-MMX", ff_idct_xvid_mmx, FF_IDCT_PERM_NONE, AV_CPU_FLAG_MMX, 1 },
42#endif
43#if HAVE_MMXEXT_INLINE
44 { "XVID-MMXEXT", ff_idct_xvid_mmxext, FF_IDCT_PERM_NONE, AV_CPU_FLAG_MMXEXT, 1 },
45#endif
46#if HAVE_SSE2_INLINE
47 { "XVID-SSE2", ff_idct_xvid_sse2, FF_IDCT_PERM_SSE2, AV_CPU_FLAG_SSE2, 1 },
48#endif
49 { 0 }
50};
51
52static short idct_simple_mmx_perm[64] = {
53 0x00, 0x08, 0x04, 0x09, 0x01, 0x0C, 0x05, 0x0D,
54 0x10, 0x18, 0x14, 0x19, 0x11, 0x1C, 0x15, 0x1D,
55 0x20, 0x28, 0x24, 0x29, 0x21, 0x2C, 0x25, 0x2D,
56 0x12, 0x1A, 0x16, 0x1B, 0x13, 0x1E, 0x17, 0x1F,
57 0x02, 0x0A, 0x06, 0x0B, 0x03, 0x0E, 0x07, 0x0F,
58 0x30, 0x38, 0x34, 0x39, 0x31, 0x3C, 0x35, 0x3D,
59 0x22, 0x2A, 0x26, 0x2B, 0x23, 0x2E, 0x27, 0x2F,
60 0x32, 0x3A, 0x36, 0x3B, 0x33, 0x3E, 0x37, 0x3F,
61};
62
63static const uint8_t idct_sse2_row_perm[8] = { 0, 4, 1, 5, 2, 6, 3, 7 };
64
65static int permute_x86(int16_t dst[64], const int16_t src[64],
66 enum idct_permutation_type perm_type)
67{
68 int i;
69
70 switch (perm_type) {
71 case FF_IDCT_PERM_SIMPLE:
72 for (i = 0; i < 64; i++)
73 dst[idct_simple_mmx_perm[i]] = src[i];
74 return 1;
75 case FF_IDCT_PERM_SSE2:
76 for (i = 0; i < 64; i++)
77 dst[(i & 0x38) | idct_sse2_row_perm[i & 7]] = src[i];
78 return 1;
79 }
80
81 return 0;
82}