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Imported Debian version 2.4.3~trusty1
[deb_ffmpeg.git] / ffmpeg / libavcodec / x86 / videodsp_init.c
CommitLineData
2ba45a60
DM		 1/*
2 * Copyright (C) 2002-2012 Michael Niedermayer
3 * Copyright (C) 2012 Ronald S. Bultje
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22#include "config.h"
23#include "libavutil/attributes.h"
24#include "libavutil/avassert.h"
25#include "libavutil/common.h"
26#include "libavutil/cpu.h"
27#include "libavutil/mem.h"
28#include "libavutil/x86/asm.h"
29#include "libavutil/x86/cpu.h"
30#include "libavcodec/videodsp.h"
31
32#if HAVE_YASM
33typedef void emu_edge_vfix_func(uint8_t *dst, x86_reg dst_stride,
34 const uint8_t *src, x86_reg src_stride,
35 x86_reg start_y, x86_reg end_y, x86_reg bh);
36typedef void emu_edge_vvar_func(uint8_t *dst, x86_reg dst_stride,
37 const uint8_t *src, x86_reg src_stride,
38 x86_reg start_y, x86_reg end_y, x86_reg bh,
39 x86_reg w);
40
41extern emu_edge_vfix_func ff_emu_edge_vfix1_mmx;
42extern emu_edge_vfix_func ff_emu_edge_vfix2_mmx;
43extern emu_edge_vfix_func ff_emu_edge_vfix3_mmx;
44extern emu_edge_vfix_func ff_emu_edge_vfix4_mmx;
45extern emu_edge_vfix_func ff_emu_edge_vfix5_mmx;
46extern emu_edge_vfix_func ff_emu_edge_vfix6_mmx;
47extern emu_edge_vfix_func ff_emu_edge_vfix7_mmx;
48extern emu_edge_vfix_func ff_emu_edge_vfix8_mmx;
49extern emu_edge_vfix_func ff_emu_edge_vfix9_mmx;
50extern emu_edge_vfix_func ff_emu_edge_vfix10_mmx;
51extern emu_edge_vfix_func ff_emu_edge_vfix11_mmx;
52extern emu_edge_vfix_func ff_emu_edge_vfix12_mmx;
53extern emu_edge_vfix_func ff_emu_edge_vfix13_mmx;
54extern emu_edge_vfix_func ff_emu_edge_vfix14_mmx;
55extern emu_edge_vfix_func ff_emu_edge_vfix15_mmx;
56extern emu_edge_vfix_func ff_emu_edge_vfix16_mmx;
57extern emu_edge_vfix_func ff_emu_edge_vfix17_mmx;
58extern emu_edge_vfix_func ff_emu_edge_vfix18_mmx;
59extern emu_edge_vfix_func ff_emu_edge_vfix19_mmx;
60extern emu_edge_vfix_func ff_emu_edge_vfix20_mmx;
61extern emu_edge_vfix_func ff_emu_edge_vfix21_mmx;
62extern emu_edge_vfix_func ff_emu_edge_vfix22_mmx;
63#if ARCH_X86_32
64static emu_edge_vfix_func * const vfixtbl_mmx[22] = {
65 &ff_emu_edge_vfix1_mmx, &ff_emu_edge_vfix2_mmx, &ff_emu_edge_vfix3_mmx,
66 &ff_emu_edge_vfix4_mmx, &ff_emu_edge_vfix5_mmx, &ff_emu_edge_vfix6_mmx,
67 &ff_emu_edge_vfix7_mmx, &ff_emu_edge_vfix8_mmx, &ff_emu_edge_vfix9_mmx,
68 &ff_emu_edge_vfix10_mmx, &ff_emu_edge_vfix11_mmx, &ff_emu_edge_vfix12_mmx,
69 &ff_emu_edge_vfix13_mmx, &ff_emu_edge_vfix14_mmx, &ff_emu_edge_vfix15_mmx,
70 &ff_emu_edge_vfix16_mmx, &ff_emu_edge_vfix17_mmx, &ff_emu_edge_vfix18_mmx,
71 &ff_emu_edge_vfix19_mmx, &ff_emu_edge_vfix20_mmx, &ff_emu_edge_vfix21_mmx,
72 &ff_emu_edge_vfix22_mmx
73};
74#endif
75extern emu_edge_vvar_func ff_emu_edge_vvar_mmx;
76extern emu_edge_vfix_func ff_emu_edge_vfix16_sse;
77extern emu_edge_vfix_func ff_emu_edge_vfix17_sse;
78extern emu_edge_vfix_func ff_emu_edge_vfix18_sse;
79extern emu_edge_vfix_func ff_emu_edge_vfix19_sse;
80extern emu_edge_vfix_func ff_emu_edge_vfix20_sse;
81extern emu_edge_vfix_func ff_emu_edge_vfix21_sse;
82extern emu_edge_vfix_func ff_emu_edge_vfix22_sse;
83static emu_edge_vfix_func * const vfixtbl_sse[22] = {
84 ff_emu_edge_vfix1_mmx, ff_emu_edge_vfix2_mmx, ff_emu_edge_vfix3_mmx,
85 ff_emu_edge_vfix4_mmx, ff_emu_edge_vfix5_mmx, ff_emu_edge_vfix6_mmx,
86 ff_emu_edge_vfix7_mmx, ff_emu_edge_vfix8_mmx, ff_emu_edge_vfix9_mmx,
87 ff_emu_edge_vfix10_mmx, ff_emu_edge_vfix11_mmx, ff_emu_edge_vfix12_mmx,
88 ff_emu_edge_vfix13_mmx, ff_emu_edge_vfix14_mmx, ff_emu_edge_vfix15_mmx,
89 ff_emu_edge_vfix16_sse, ff_emu_edge_vfix17_sse, ff_emu_edge_vfix18_sse,
90 ff_emu_edge_vfix19_sse, ff_emu_edge_vfix20_sse, ff_emu_edge_vfix21_sse,
91 ff_emu_edge_vfix22_sse
92};
93extern emu_edge_vvar_func ff_emu_edge_vvar_sse;
94
95typedef void emu_edge_hfix_func(uint8_t *dst, x86_reg dst_stride,
96 x86_reg start_x, x86_reg bh);
97typedef void emu_edge_hvar_func(uint8_t *dst, x86_reg dst_stride,
98 x86_reg start_x, x86_reg n_words, x86_reg bh);
99
100extern emu_edge_hfix_func ff_emu_edge_hfix2_mmx;
101extern emu_edge_hfix_func ff_emu_edge_hfix4_mmx;
102extern emu_edge_hfix_func ff_emu_edge_hfix6_mmx;
103extern emu_edge_hfix_func ff_emu_edge_hfix8_mmx;
104extern emu_edge_hfix_func ff_emu_edge_hfix10_mmx;
105extern emu_edge_hfix_func ff_emu_edge_hfix12_mmx;
106extern emu_edge_hfix_func ff_emu_edge_hfix14_mmx;
107extern emu_edge_hfix_func ff_emu_edge_hfix16_mmx;
108extern emu_edge_hfix_func ff_emu_edge_hfix18_mmx;
109extern emu_edge_hfix_func ff_emu_edge_hfix20_mmx;
110extern emu_edge_hfix_func ff_emu_edge_hfix22_mmx;
111#if ARCH_X86_32
112static emu_edge_hfix_func * const hfixtbl_mmx[11] = {
113 ff_emu_edge_hfix2_mmx, ff_emu_edge_hfix4_mmx, ff_emu_edge_hfix6_mmx,
114 ff_emu_edge_hfix8_mmx, ff_emu_edge_hfix10_mmx, ff_emu_edge_hfix12_mmx,
115 ff_emu_edge_hfix14_mmx, ff_emu_edge_hfix16_mmx, ff_emu_edge_hfix18_mmx,
116 ff_emu_edge_hfix20_mmx, ff_emu_edge_hfix22_mmx
117};
118#endif
119extern emu_edge_hvar_func ff_emu_edge_hvar_mmx;
120extern emu_edge_hfix_func ff_emu_edge_hfix16_sse2;
121extern emu_edge_hfix_func ff_emu_edge_hfix18_sse2;
122extern emu_edge_hfix_func ff_emu_edge_hfix20_sse2;
123extern emu_edge_hfix_func ff_emu_edge_hfix22_sse2;
124static emu_edge_hfix_func * const hfixtbl_sse2[11] = {
125 ff_emu_edge_hfix2_mmx, ff_emu_edge_hfix4_mmx, ff_emu_edge_hfix6_mmx,
126 ff_emu_edge_hfix8_mmx, ff_emu_edge_hfix10_mmx, ff_emu_edge_hfix12_mmx,
127 ff_emu_edge_hfix14_mmx, ff_emu_edge_hfix16_sse2, ff_emu_edge_hfix18_sse2,
128 ff_emu_edge_hfix20_sse2, ff_emu_edge_hfix22_sse2
129};
130extern emu_edge_hvar_func ff_emu_edge_hvar_sse2;
131
132static av_always_inline void emulated_edge_mc(uint8_t *dst, const uint8_t *src,
133 ptrdiff_t dst_stride,
134 ptrdiff_t src_stride,
135 x86_reg block_w, x86_reg block_h,
136 x86_reg src_x, x86_reg src_y,
137 x86_reg w, x86_reg h,
138 emu_edge_vfix_func **vfix_tbl,
139 emu_edge_vvar_func *v_extend_var,
140 emu_edge_hfix_func **hfix_tbl,
141 emu_edge_hvar_func *h_extend_var)
142{
143 x86_reg start_y, start_x, end_y, end_x, src_y_add = 0, p;
144
145 if (!w || !h)
146 return;
147
148 if (src_y >= h) {
149 src -= src_y*src_stride;
150 src_y_add = h - 1;
151 src_y = h - 1;
152 } else if (src_y <= -block_h) {
153 src -= src_y*src_stride;
154 src_y_add = 1 - block_h;
155 src_y = 1 - block_h;
156 }
157 if (src_x >= w) {
158 src += w - 1 - src_x;
159 src_x = w - 1;
160 } else if (src_x <= -block_w) {
161 src += 1 - block_w - src_x;
162 src_x = 1 - block_w;
163 }
164
165 start_y = FFMAX(0, -src_y);
166 start_x = FFMAX(0, -src_x);
167 end_y = FFMIN(block_h, h-src_y);
168 end_x = FFMIN(block_w, w-src_x);
169 av_assert2(start_x < end_x && block_w > 0);
170 av_assert2(start_y < end_y && block_h > 0);
171
172 // fill in the to-be-copied part plus all above/below
173 src += (src_y_add + start_y) * src_stride + start_x;
174 w = end_x - start_x;
175 if (w <= 22) {
176 vfix_tbl[w - 1](dst + start_x, dst_stride, src, src_stride,
177 start_y, end_y, block_h);
178 } else {
179 v_extend_var(dst + start_x, dst_stride, src, src_stride,
180 start_y, end_y, block_h, w);
181 }
182
183 // fill left
184 if (start_x) {
185 if (start_x <= 22) {
186 hfix_tbl[(start_x - 1) >> 1](dst, dst_stride, start_x, block_h);
187 } else {
188 h_extend_var(dst, dst_stride,
189 start_x, (start_x + 1) >> 1, block_h);
190 }
191 }
192
193 // fill right
194 p = block_w - end_x;
195 if (p) {
196 if (p <= 22) {
197 hfix_tbl[(p - 1) >> 1](dst + end_x - (p & 1), dst_stride,
198 -!(p & 1), block_h);
199 } else {
200 h_extend_var(dst + end_x - (p & 1), dst_stride,
201 -!(p & 1), (p + 1) >> 1, block_h);
202 }
203 }
204}
205
206#if ARCH_X86_32
207static av_noinline void emulated_edge_mc_mmx(uint8_t *buf, const uint8_t *src,
208 ptrdiff_t buf_stride,
209 ptrdiff_t src_stride,
210 int block_w, int block_h,
211 int src_x, int src_y, int w, int h)
212{
213 emulated_edge_mc(buf, src, buf_stride, src_stride, block_w, block_h,
214 src_x, src_y, w, h, vfixtbl_mmx, &ff_emu_edge_vvar_mmx,
215 hfixtbl_mmx, &ff_emu_edge_hvar_mmx);
216}
217
218static av_noinline void emulated_edge_mc_sse(uint8_t *buf, const uint8_t *src,
219 ptrdiff_t buf_stride,
220 ptrdiff_t src_stride,
221 int block_w, int block_h,
222 int src_x, int src_y, int w, int h)
223{
224 emulated_edge_mc(buf, src, buf_stride, src_stride, block_w, block_h,
225 src_x, src_y, w, h, vfixtbl_sse, &ff_emu_edge_vvar_sse,
226 hfixtbl_mmx, &ff_emu_edge_hvar_mmx);
227}
228#endif
229
230static av_noinline void emulated_edge_mc_sse2(uint8_t *buf, const uint8_t *src,
231 ptrdiff_t buf_stride,
232 ptrdiff_t src_stride,
233 int block_w, int block_h,
234 int src_x, int src_y, int w,
235 int h)
236{
237 emulated_edge_mc(buf, src, buf_stride, src_stride, block_w, block_h,
238 src_x, src_y, w, h, vfixtbl_sse, &ff_emu_edge_vvar_sse,
239 hfixtbl_sse2, &ff_emu_edge_hvar_sse2);
240}
241#endif /* HAVE_YASM */
242
243void ff_prefetch_mmxext(uint8_t *buf, ptrdiff_t stride, int h);
244void ff_prefetch_3dnow(uint8_t *buf, ptrdiff_t stride, int h);
245
246av_cold void ff_videodsp_init_x86(VideoDSPContext *ctx, int bpc)
247{
248#if HAVE_YASM
249 int cpu_flags = av_get_cpu_flags();
250
251#if ARCH_X86_32
252 if (EXTERNAL_MMX(cpu_flags) && bpc <= 8) {
253 ctx->emulated_edge_mc = emulated_edge_mc_mmx;
254 }
255 if (EXTERNAL_AMD3DNOW(cpu_flags)) {
256 ctx->prefetch = ff_prefetch_3dnow;
257 }
258#endif /* ARCH_X86_32 */
259 if (EXTERNAL_MMXEXT(cpu_flags)) {
260 ctx->prefetch = ff_prefetch_mmxext;
261 }
262#if ARCH_X86_32
263 if (EXTERNAL_SSE(cpu_flags) && bpc <= 8) {
264 ctx->emulated_edge_mc = emulated_edge_mc_sse;
265 }
266#endif /* ARCH_X86_32 */
267 if (EXTERNAL_SSE2(cpu_flags) && bpc <= 8) {
268 ctx->emulated_edge_mc = emulated_edge_mc_sse2;
269 }
270#endif /* HAVE_YASM */
271}
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