libFLAC/cpu.c: Get rid of OS_IS_ANDROID function
[flac.git] / src / libFLAC / stream_encoder_intrin_ssse3.c
1 /* libFLAC - Free Lossless Audio Codec library
2  * Copyright (C) 2000-2009  Josh Coalson
3  * Copyright (C) 2011-2014  Xiph.Org Foundation
4  *
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6  * modification, are permitted provided that the following conditions
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8  *
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31  */
32
33 #ifdef HAVE_CONFIG_H
34 #  include <config.h>
35 #endif
36
37 #include "private/cpu.h"
38
39 #ifndef FLAC__NO_ASM
40 #if (defined FLAC__CPU_IA32 || defined FLAC__CPU_X86_64) && FLAC__HAS_X86INTRIN
41 #include "private/stream_encoder.h"
42 #include "private/bitmath.h"
43 #ifdef FLAC__SSSE3_SUPPORTED
44
45 #include <stdlib.h>    /* for abs() */
46 #include <tmmintrin.h> /* SSSE3 */
47 #include "FLAC/assert.h"
48
49 FLAC__SSE_TARGET("ssse3")
50 void FLAC__precompute_partition_info_sums_intrin_ssse3(const FLAC__int32 residual[], FLAC__uint64 abs_residual_partition_sums[],
51                 unsigned residual_samples, unsigned predictor_order, unsigned min_partition_order, unsigned max_partition_order, unsigned bps)
52 {
53         const unsigned default_partition_samples = (residual_samples + predictor_order) >> max_partition_order;
54         unsigned partitions = 1u << max_partition_order;
55
56         FLAC__ASSERT(default_partition_samples > predictor_order);
57
58         /* first do max_partition_order */
59         {
60                 const unsigned threshold = 32 - FLAC__bitmath_ilog2(default_partition_samples);
61                 unsigned partition, residual_sample, end = (unsigned)(-(int)predictor_order);
62
63                 if(bps + FLAC__MAX_EXTRA_RESIDUAL_BPS < threshold) {
64                         for(partition = residual_sample = 0; partition < partitions; partition++) {
65                                 __m128i mm_sum = _mm_setzero_si128();
66                                 unsigned e1, e3;
67                                 end += default_partition_samples;
68
69                                 e1 = (residual_sample + 3) & ~3; e3 = end & ~3;
70                                 if(e1 > end)
71                                         e1 = end; /* try flac -l 1 -b 16 and you'll be here */
72
73                                 /* assumption: residual[] is properly aligned so (residual + e1) is properly aligned too and _mm_loadu_si128() is fast */
74                                 for( ; residual_sample < e1; residual_sample++) {
75                                         __m128i mm_res = _mm_abs_epi32(_mm_cvtsi32_si128(residual[residual_sample]));
76                                         mm_sum = _mm_add_epi32(mm_sum, mm_res);
77                                 }
78
79                                 for( ; residual_sample < e3; residual_sample+=4) {
80                                         __m128i mm_res = _mm_abs_epi32(_mm_loadu_si128((const __m128i*)(residual+residual_sample)));
81                                         mm_sum = _mm_add_epi32(mm_sum, mm_res);
82                                 }
83
84                                 for( ; residual_sample < end; residual_sample++) {
85                                         __m128i mm_res = _mm_abs_epi32(_mm_cvtsi32_si128(residual[residual_sample]));
86                                         mm_sum = _mm_add_epi32(mm_sum, mm_res);
87                                 }
88
89                                 mm_sum = _mm_hadd_epi32(mm_sum, mm_sum);
90                                 mm_sum = _mm_hadd_epi32(mm_sum, mm_sum);
91                                 abs_residual_partition_sums[partition] = (FLAC__uint32)_mm_cvtsi128_si32(mm_sum);
92 /* workaround for a bug in MSVC2015U2 - see https://connect.microsoft.com/VisualStudio/feedback/details/2659191/incorrect-code-generation-for-x86-64 */
93 #if (defined _MSC_VER) && (_MSC_FULL_VER == 190023918) && (defined FLAC__CPU_X86_64)
94                                 abs_residual_partition_sums[partition] &= 0xFFFFFFFF;
95 #endif
96                         }
97                 }
98                 else { /* have to pessimistically use 64 bits for accumulator */
99                         for(partition = residual_sample = 0; partition < partitions; partition++) {
100                                 __m128i mm_sum = _mm_setzero_si128();
101                                 unsigned e1, e3;
102                                 end += default_partition_samples;
103
104                                 e1 = (residual_sample + 1) & ~1; e3 = end & ~1;
105                                 FLAC__ASSERT(e1 <= end);
106
107                                 for( ; residual_sample < e1; residual_sample++) {
108                                         __m128i mm_res = _mm_abs_epi32(_mm_cvtsi32_si128(residual[residual_sample])); /*  0   0   0  |r0|  ==   00   |r0_64| */
109                                         mm_sum = _mm_add_epi64(mm_sum, mm_res);
110                                 }
111
112                                 for( ; residual_sample < e3; residual_sample+=2) {
113                                         __m128i mm_res = _mm_abs_epi32(_mm_loadl_epi64((const __m128i*)(residual+residual_sample))); /*  0   0  |r1|   |r0| */
114                                         mm_res = _mm_shuffle_epi32(mm_res, _MM_SHUFFLE(3,1,2,0)); /* 0  |r1|  0  |r0|  ==  |r1_64|  |r0_64|  */
115                                         mm_sum = _mm_add_epi64(mm_sum, mm_res);
116                                 }
117
118                                 for( ; residual_sample < end; residual_sample++) {
119                                         __m128i mm_res = _mm_abs_epi32(_mm_cvtsi32_si128(residual[residual_sample]));
120                                         mm_sum = _mm_add_epi64(mm_sum, mm_res);
121                                 }
122
123                                 mm_sum = _mm_add_epi64(mm_sum, _mm_srli_si128(mm_sum, 8));
124                                 _mm_storel_epi64((__m128i*)(abs_residual_partition_sums+partition), mm_sum);
125                         }
126                 }
127         }
128
129         /* now merge partitions for lower orders */
130         {
131                 unsigned from_partition = 0, to_partition = partitions;
132                 int partition_order;
133                 for(partition_order = (int)max_partition_order - 1; partition_order >= (int)min_partition_order; partition_order--) {
134                         unsigned i;
135                         partitions >>= 1;
136                         for(i = 0; i < partitions; i++) {
137                                 abs_residual_partition_sums[to_partition++] =
138                                         abs_residual_partition_sums[from_partition  ] +
139                                         abs_residual_partition_sums[from_partition+1];
140                                 from_partition += 2;
141                         }
142                 }
143         }
144 }
145
146 #endif /* FLAC__SSSE3_SUPPORTED */
147 #endif /* (FLAC__CPU_IA32 || FLAC__CPU_X86_64) && FLAC__HAS_X86INTRIN */
148 #endif /* FLAC__NO_ASM */