3 * Copyright (c) 2004-2012 Michael Niedermayer <michaelni@gmx.at>
5 * This file is part of FFmpeg.
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.
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.
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
25 * @author Michael Niedermayer <michaelni@gmx.at>
28 #if defined(TEMPLATE_RESAMPLE_DBL) \
29 || defined(TEMPLATE_RESAMPLE_DBL_SSE2)
31 # define FILTER_SHIFT 0
34 # define FELEM2 double
35 # define FELEML double
36 # define OUT(d, v) d = v
38 # if defined(TEMPLATE_RESAMPLE_DBL)
39 # define RENAME(N) N ## _double
40 # elif defined(TEMPLATE_RESAMPLE_DBL_SSE2)
41 # define COMMON_CORE COMMON_CORE_DBL_SSE2
42 # define LINEAR_CORE LINEAR_CORE_DBL_SSE2
43 # define RENAME(N) N ## _double_sse2
46 #elif defined(TEMPLATE_RESAMPLE_FLT) \
47 || defined(TEMPLATE_RESAMPLE_FLT_SSE) \
48 || defined(TEMPLATE_RESAMPLE_FLT_AVX)
50 # define FILTER_SHIFT 0
55 # define OUT(d, v) d = v
57 # if defined(TEMPLATE_RESAMPLE_FLT)
58 # define RENAME(N) N ## _float
59 # elif defined(TEMPLATE_RESAMPLE_FLT_SSE)
60 # define COMMON_CORE COMMON_CORE_FLT_SSE
61 # define LINEAR_CORE LINEAR_CORE_FLT_SSE
62 # define RENAME(N) N ## _float_sse
63 # elif defined(TEMPLATE_RESAMPLE_FLT_AVX)
64 # define COMMON_CORE COMMON_CORE_FLT_AVX
65 # define LINEAR_CORE LINEAR_CORE_FLT_AVX
66 # define RENAME(N) N ## _float_avx
69 #elif defined(TEMPLATE_RESAMPLE_S32)
70 # define RENAME(N) N ## _int32
71 # define FILTER_SHIFT 30
72 # define DELEM int32_t
73 # define FELEM int32_t
74 # define FELEM2 int64_t
75 # define FELEML int64_t
76 # define FELEM_MAX INT32_MAX
77 # define FELEM_MIN INT32_MIN
78 # define OUT(d, v) v = (v + (1<<(FILTER_SHIFT-1)))>>FILTER_SHIFT;\
79 d = (uint64_t)(v + 0x80000000) > 0xFFFFFFFF ? (v>>63) ^ 0x7FFFFFFF : v
81 #elif defined(TEMPLATE_RESAMPLE_S16) \
82 || defined(TEMPLATE_RESAMPLE_S16_MMX2) \
83 || defined(TEMPLATE_RESAMPLE_S16_SSE2)
85 # define FILTER_SHIFT 15
86 # define DELEM int16_t
87 # define FELEM int16_t
88 # define FELEM2 int32_t
89 # define FELEML int64_t
90 # define FELEM_MAX INT16_MAX
91 # define FELEM_MIN INT16_MIN
92 # define OUT(d, v) v = (v + (1<<(FILTER_SHIFT-1)))>>FILTER_SHIFT;\
93 d = (unsigned)(v + 32768) > 65535 ? (v>>31) ^ 32767 : v
95 # if defined(TEMPLATE_RESAMPLE_S16)
96 # define RENAME(N) N ## _int16
97 # elif defined(TEMPLATE_RESAMPLE_S16_MMX2)
98 # define COMMON_CORE COMMON_CORE_INT16_MMX2
99 # define LINEAR_CORE LINEAR_CORE_INT16_MMX2
100 # define RENAME(N) N ## _int16_mmx2
101 # elif defined(TEMPLATE_RESAMPLE_S16_SSE2)
102 # define COMMON_CORE COMMON_CORE_INT16_SSE2
103 # define LINEAR_CORE LINEAR_CORE_INT16_SSE2
104 # define RENAME(N) N ## _int16_sse2
110 static void RENAME(resample_one)(DELEM *dst, const DELEM *src,
111 int dst_size, int64_t index2, int64_t incr)
115 for (dst_index = 0; dst_index < dst_size; dst_index++) {
116 dst[dst_index] = src[index2 >> 32];
122 int RENAME(swri_resample_common)(ResampleContext *c,
123 DELEM *dst, const DELEM *src,
124 int n, int update_ctx)
129 int sample_index = index >> c->phase_shift;
131 index &= c->phase_mask;
132 for (dst_index = 0; dst_index < n; dst_index++) {
133 FELEM *filter = ((FELEM *) c->filter_bank) + c->filter_alloc * index;
140 for (i = 0; i < c->filter_length; i++) {
141 val += src[sample_index + i] * (FELEM2)filter[i];
143 OUT(dst[dst_index], val);
146 frac += c->dst_incr_mod;
147 index += c->dst_incr_div;
148 if (frac >= c->src_incr) {
152 sample_index += index >> c->phase_shift;
153 index &= c->phase_mask;
164 int RENAME(swri_resample_linear)(ResampleContext *c,
165 DELEM *dst, const DELEM *src,
166 int n, int update_ctx)
171 int dst_incr_frac= c->dst_incr % c->src_incr;
172 int dst_incr= c->dst_incr / c->src_incr;
173 int sample_index = index >> c->phase_shift;
175 index &= c->phase_mask;
176 for (dst_index = 0; dst_index < n; dst_index++) {
177 FELEM *filter = ((FELEM *) c->filter_bank) + c->filter_alloc * index;
178 FELEM2 val=0, v2 = 0;
184 for (i = 0; i < c->filter_length; i++) {
185 val += src[sample_index + i] * (FELEM2)filter[i];
186 v2 += src[sample_index + i] * (FELEM2)filter[i + c->filter_alloc];
189 val += (v2 - val) * (FELEML) frac / c->src_incr;
190 OUT(dst[dst_index], val);
192 frac += dst_incr_frac;
194 if (frac >= c->src_incr) {
198 sample_index += index >> c->phase_shift;
199 index &= c->phase_mask;