DNxHD: make get_pixel_8x4_sym accept ptrdiff_t as stride
[libav.git] / libavcodec / x86 / dnxhdenc.c
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 Libav.
8 *
9 * Libav 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 * Libav 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 Libav; 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, ptrdiff_t 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
59 av_cold void ff_dnxhdenc_init_x86(DNXHDEncContext *ctx)
60 {
61 #if HAVE_SSE2_INLINE
62 if (INLINE_SSE2(av_get_cpu_flags())) {
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 }