FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/x86/mpegvideoenc.c
Date: 2022-12-05 20:26:17
Exec Total Coverage
Lines: 4 17 23.5%
Functions: 1 2 50.0%
Branches: 2 8 25.0%

Line Branch Exec Source
1 /*
2 * The simplest mpeg encoder (well, it was the simplest!)
3 * Copyright (c) 2000,2001 Fabrice Bellard
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 "libavutil/attributes.h"
23 #include "libavutil/cpu.h"
24 #include "libavutil/mem_internal.h"
25 #include "libavutil/x86/asm.h"
26 #include "libavutil/x86/cpu.h"
27 #include "libavcodec/avcodec.h"
28 #include "libavcodec/dct.h"
29 #include "libavcodec/mpegvideoenc.h"
30
31 /* not permutated inverse zigzag_direct + 1 for MMX quantizer */
32 DECLARE_ALIGNED(16, static const uint16_t, inv_zigzag_direct16)[64] = {
33 1, 2, 6, 7, 15, 16, 28, 29,
34 3, 5, 8, 14, 17, 27, 30, 43,
35 4, 9, 13, 18, 26, 31, 42, 44,
36 10, 12, 19, 25, 32, 41, 45, 54,
37 11, 20, 24, 33, 40, 46, 53, 55,
38 21, 23, 34, 39, 47, 52, 56, 61,
39 22, 35, 38, 48, 51, 57, 60, 62,
40 36, 37, 49, 50, 58, 59, 63, 64,
41 };
42
43 #if HAVE_6REGS
44
45 #if HAVE_SSE2_INLINE
46 #undef COMPILE_TEMPLATE_SSE2
47 #undef COMPILE_TEMPLATE_SSSE3
48 #define COMPILE_TEMPLATE_SSE2 1
49 #define COMPILE_TEMPLATE_SSSE3 0
50 #undef RENAME
51 #undef RENAME_FDCT
52 #define RENAME(a) a ## _sse2
53 #define RENAME_FDCT(a) a ## _sse2
54 #include "mpegvideoenc_template.c"
55 #endif /* HAVE_SSE2_INLINE */
56
57 #if HAVE_SSSE3_INLINE
58 #undef COMPILE_TEMPLATE_SSE2
59 #undef COMPILE_TEMPLATE_SSSE3
60 #define COMPILE_TEMPLATE_SSE2 1
61 #define COMPILE_TEMPLATE_SSSE3 1
62 #undef RENAME
63 #undef RENAME_FDCT
64 #define RENAME(a) a ## _ssse3
65 #define RENAME_FDCT(a) a ## _sse2
66 #include "mpegvideoenc_template.c"
67 #endif /* HAVE_SSSE3_INLINE */
68
69 #endif /* HAVE_6REGS */
70
71 #if HAVE_INLINE_ASM
72 #if HAVE_SSE2_INLINE
73 static void denoise_dct_sse2(MpegEncContext *s, int16_t *block){
74 const int intra= s->mb_intra;
75 int *sum= s->dct_error_sum[intra];
76 uint16_t *offset= s->dct_offset[intra];
77
78 s->dct_count[intra]++;
79
80 __asm__ volatile(
81 "pxor %%xmm7, %%xmm7 \n\t"
82 "1: \n\t"
83 "pxor %%xmm0, %%xmm0 \n\t"
84 "pxor %%xmm1, %%xmm1 \n\t"
85 "movdqa (%0), %%xmm2 \n\t"
86 "movdqa 16(%0), %%xmm3 \n\t"
87 "pcmpgtw %%xmm2, %%xmm0 \n\t"
88 "pcmpgtw %%xmm3, %%xmm1 \n\t"
89 "pxor %%xmm0, %%xmm2 \n\t"
90 "pxor %%xmm1, %%xmm3 \n\t"
91 "psubw %%xmm0, %%xmm2 \n\t"
92 "psubw %%xmm1, %%xmm3 \n\t"
93 "movdqa %%xmm2, %%xmm4 \n\t"
94 "movdqa %%xmm3, %%xmm5 \n\t"
95 "psubusw (%2), %%xmm2 \n\t"
96 "psubusw 16(%2), %%xmm3 \n\t"
97 "pxor %%xmm0, %%xmm2 \n\t"
98 "pxor %%xmm1, %%xmm3 \n\t"
99 "psubw %%xmm0, %%xmm2 \n\t"
100 "psubw %%xmm1, %%xmm3 \n\t"
101 "movdqa %%xmm2, (%0) \n\t"
102 "movdqa %%xmm3, 16(%0) \n\t"
103 "movdqa %%xmm4, %%xmm6 \n\t"
104 "movdqa %%xmm5, %%xmm0 \n\t"
105 "punpcklwd %%xmm7, %%xmm4 \n\t"
106 "punpckhwd %%xmm7, %%xmm6 \n\t"
107 "punpcklwd %%xmm7, %%xmm5 \n\t"
108 "punpckhwd %%xmm7, %%xmm0 \n\t"
109 "paddd (%1), %%xmm4 \n\t"
110 "paddd 16(%1), %%xmm6 \n\t"
111 "paddd 32(%1), %%xmm5 \n\t"
112 "paddd 48(%1), %%xmm0 \n\t"
113 "movdqa %%xmm4, (%1) \n\t"
114 "movdqa %%xmm6, 16(%1) \n\t"
115 "movdqa %%xmm5, 32(%1) \n\t"
116 "movdqa %%xmm0, 48(%1) \n\t"
117 "add $32, %0 \n\t"
118 "add $64, %1 \n\t"
119 "add $32, %2 \n\t"
120 "cmp %3, %0 \n\t"
121 " jb 1b \n\t"
122 : "+r" (block), "+r" (sum), "+r" (offset)
123 : "r"(block+64)
124 XMM_CLOBBERS_ONLY("%xmm0", "%xmm1", "%xmm2", "%xmm3",
125 "%xmm4", "%xmm5", "%xmm6", "%xmm7")
126 );
127 }
128 #endif /* HAVE_SSE2_INLINE */
129 #endif /* HAVE_INLINE_ASM */
130
131 269 av_cold void ff_dct_encode_init_x86(MpegEncContext *s)
132 {
133 269 const int dct_algo = s->avctx->dct_algo;
134
135
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269 if (dct_algo == FF_DCT_AUTO || dct_algo == FF_DCT_MMX) {
136 #if HAVE_MMX_INLINE
137 int cpu_flags = av_get_cpu_flags();
138 #if HAVE_SSE2_INLINE
139 if (INLINE_SSE2(cpu_flags)) {
140 #if HAVE_6REGS
141 s->dct_quantize = dct_quantize_sse2;
142 #endif
143 s->denoise_dct = denoise_dct_sse2;
144 }
145 #endif
146 #if HAVE_6REGS && HAVE_SSSE3_INLINE
147 if (INLINE_SSSE3(cpu_flags))
148 s->dct_quantize = dct_quantize_ssse3;
149 #endif
150 #endif
151 }
152 269 }
153