FFmpeg
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
dnxhdenc.c
Go to the documentation of this file.
1 /*
2  * VC3/DNxHD SIMD functions
3  * Copyright (c) 2007 Baptiste Coudurier <baptiste dot coudurier at smartjog dot com>
4  *
5  * VC-3 encoder funded by the British Broadcasting Corporation
6  *
7  * This file is part of FFmpeg.
8  *
9  * FFmpeg is free software; you can redistribute it and/or
10  * modify it under the terms of the GNU Lesser General Public
11  * License as published by the Free Software Foundation; either
12  * version 2.1 of the License, or (at your option) any later version.
13  *
14  * FFmpeg is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17  * Lesser General Public License for more details.
18  *
19  * You should have received a copy of the GNU Lesser General Public
20  * License along with FFmpeg; if not, write to the Free Software
21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22  */
23 
24 #include "libavutil/attributes.h"
25 #include "libavutil/x86/asm.h"
26 #include "libavutil/x86/cpu.h"
27 #include "libavcodec/dnxhdenc.h"
28 
29 #if HAVE_SSE2_INLINE
30 
31 static void get_pixels_8x4_sym_sse2(int16_t *block, const uint8_t *pixels, int line_size)
32 {
33  __asm__ volatile(
34  "pxor %%xmm5, %%xmm5 \n\t"
35  "movq (%0), %%xmm0 \n\t"
36  "add %2, %0 \n\t"
37  "movq (%0), %%xmm1 \n\t"
38  "movq (%0, %2), %%xmm2 \n\t"
39  "movq (%0, %2,2), %%xmm3 \n\t"
40  "punpcklbw %%xmm5, %%xmm0 \n\t"
41  "punpcklbw %%xmm5, %%xmm1 \n\t"
42  "punpcklbw %%xmm5, %%xmm2 \n\t"
43  "punpcklbw %%xmm5, %%xmm3 \n\t"
44  "movdqa %%xmm0, (%1) \n\t"
45  "movdqa %%xmm1, 16(%1) \n\t"
46  "movdqa %%xmm2, 32(%1) \n\t"
47  "movdqa %%xmm3, 48(%1) \n\t"
48  "movdqa %%xmm3 , 64(%1) \n\t"
49  "movdqa %%xmm2 , 80(%1) \n\t"
50  "movdqa %%xmm1 , 96(%1) \n\t"
51  "movdqa %%xmm0, 112(%1) \n\t"
52  : "+r" (pixels)
53  : "r" (block), "r" ((x86_reg)line_size)
54  );
55 }
56 
57 #endif /* HAVE_SSE2_INLINE */
58 
60 {
61 #if HAVE_SSE2_INLINE
63  if (ctx->cid_table->bit_depth == 8)
64  ctx->get_pixels_8x4_sym = get_pixels_8x4_sym_sse2;
65  }
66 #endif /* HAVE_SSE2_INLINE */
67 }