FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libswresample/audioconvert.c
Date: 2026-09-16 13:08:21
Exec Total Coverage
Lines: 78 120 65.0%
Functions: 23 45 51.1%
Branches: 123 217 56.7%
Line Branch Exec Source
1 /*
2 * audio conversion
3 * Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
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 /**
23 * @file
24 * audio conversion
25 * @author Michael Niedermayer <michaelni@gmx.at>
26 */
27
28 #include <math.h>
29
30 #include "libavutil/avassert.h"
31 #include "libavutil/internal.h"
32 #include "libavutil/mem.h"
33 #include "libavutil/samplefmt.h"
34 #include "audioconvert.h"
35
36
37 #define CONV_FUNC_NAME(dst_fmt, src_fmt) conv_ ## src_fmt ## _to_ ## dst_fmt
38
39 //FIXME rounding ?
40 #define CONV_FUNC(ofmt, otype, ifmt, expr)\
41 static void CONV_FUNC_NAME(ofmt, ifmt)(DSDContext *st, uint8_t *po, const uint8_t *pi, int is, int os, uint8_t *end)\
42 {\
43 uint8_t *end2 = end - 3*os;\
44 while(po < end2){\
45 *(otype*)po = expr; pi += is; po += os;\
46 *(otype*)po = expr; pi += is; po += os;\
47 *(otype*)po = expr; pi += is; po += os;\
48 *(otype*)po = expr; pi += is; po += os;\
49 }\
50 while(po < end){\
51 *(otype*)po = expr; pi += is; po += os;\
52 }\
53 }
54
55 //FIXME put things below under ifdefs so we do not waste space for cases no codec will need
56 ✗ CONV_FUNC(AV_SAMPLE_FMT_U8 , uint8_t, AV_SAMPLE_FMT_U8 , *(const uint8_t*)pi)
57
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 1374675 CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_U8 , (*(const uint8_t*)pi - 0x80U)<<8)
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 23130 CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_U8 , (*(const uint8_t*)pi - 0x80U)<<24)
59 ✗ CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_U8 , (uint64_t)((*(const uint8_t*)pi - 0x80U))<<56)
60
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 22138 CONV_FUNC(AV_SAMPLE_FMT_FLT, float , AV_SAMPLE_FMT_U8 , (*(const uint8_t*)pi - 0x80)*(1.0f/ (1<<7)))
61 ✗ CONV_FUNC(AV_SAMPLE_FMT_DBL, double , AV_SAMPLE_FMT_U8 , (*(const uint8_t*)pi - 0x80)*(1.0 / (1<<7)))
62
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 2498804 CONV_FUNC(AV_SAMPLE_FMT_U8 , uint8_t, AV_SAMPLE_FMT_S16, (*(const int16_t*)pi>>8) + 0x80)
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 117862288 CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_S16, *(const int16_t*)pi)
64
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 2565086 CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_S16, *(const int16_t*)pi * (1 << 16))
65 ✗ CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S16, (uint64_t)(*(const int16_t*)pi)<<48)
66
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 4595025 CONV_FUNC(AV_SAMPLE_FMT_FLT, float , AV_SAMPLE_FMT_S16, *(const int16_t*)pi*(1.0f/ (1<<15)))
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 1226186 CONV_FUNC(AV_SAMPLE_FMT_DBL, double , AV_SAMPLE_FMT_S16, *(const int16_t*)pi*(1.0 / (1<<15)))
68 ✗ CONV_FUNC(AV_SAMPLE_FMT_U8 , uint8_t, AV_SAMPLE_FMT_S32, (*(const int32_t*)pi>>24) + 0x80)
69
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 9138111 CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_S32, *(const int32_t*)pi>>16)
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 12914717 CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_S32, *(const int32_t*)pi)
71 ✗ CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S32, (uint64_t)(*(const int32_t*)pi)<<32)
72 ✗ CONV_FUNC(AV_SAMPLE_FMT_FLT, float , AV_SAMPLE_FMT_S32, *(const int32_t*)pi*(1.0f/ (1U<<31)))
73
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 672586 CONV_FUNC(AV_SAMPLE_FMT_DBL, double , AV_SAMPLE_FMT_S32, *(const int32_t*)pi*(1.0 / (1U<<31)))
74 ✗ CONV_FUNC(AV_SAMPLE_FMT_U8 , uint8_t, AV_SAMPLE_FMT_S64, (*(const int64_t*)pi>>56) + 0x80)
75 ✗ CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_S64, *(const int64_t*)pi>>48)
76 ✗ CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_S64, *(const int64_t*)pi>>32)
77 ✗ CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S64, *(const int64_t*)pi)
78 ✗ CONV_FUNC(AV_SAMPLE_FMT_FLT, float , AV_SAMPLE_FMT_S64, *(const int64_t*)pi*(1.0f/ (UINT64_C(1)<<63)))
79 ✗ CONV_FUNC(AV_SAMPLE_FMT_DBL, double , AV_SAMPLE_FMT_S64, *(const int64_t*)pi*(1.0 / (UINT64_C(1)<<63)))
80 ✗ CONV_FUNC(AV_SAMPLE_FMT_U8 , uint8_t, AV_SAMPLE_FMT_FLT, av_clip_uint8( lrintf(*(const float*)pi * (1<<7)) + 0x80))
81
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 40443556 CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, av_clip_int16( lrintf(*(const float*)pi * (1<<15))))
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 101268 CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, av_clipl_int32(llrintf(*(const float*)pi * (1U<<31))))
83 ✗ CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_FLT, llrintf(*(const float*)pi * (UINT64_C(1)<<63)))
84
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 2654223 CONV_FUNC(AV_SAMPLE_FMT_FLT, float , AV_SAMPLE_FMT_FLT, *(const float*)pi)
85
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 66215 CONV_FUNC(AV_SAMPLE_FMT_DBL, double , AV_SAMPLE_FMT_FLT, *(const float*)pi)
86 ✗ CONV_FUNC(AV_SAMPLE_FMT_U8 , uint8_t, AV_SAMPLE_FMT_DBL, av_clip_uint8( lrint(*(const double*)pi * (1<<7)) + 0x80))
87
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 3761976 CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, av_clip_int16( lrint(*(const double*)pi * (1<<15))))
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 1158 CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, av_clipl_int32(llrint(*(const double*)pi * (1U<<31))))
89 ✗ CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_DBL, llrint(*(const double*)pi * (UINT64_C(1)<<63)))
90
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 66215 CONV_FUNC(AV_SAMPLE_FMT_FLT, float , AV_SAMPLE_FMT_DBL, *(const double*)pi)
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 2597721 CONV_FUNC(AV_SAMPLE_FMT_DBL, double , AV_SAMPLE_FMT_DBL, *(const double*)pi)
92 ✗ CONV_FUNC(AV_SAMPLE_FMT_DSD, uint8_t, AV_SAMPLE_FMT_DSD, *(const uint8_t*)pi)
93
94 362 static void CONV_FUNC_NAME(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_DSD)(DSDContext *st, uint8_t *po, const uint8_t *pi, int is, int os, uint8_t *end)
95 {
96 362 swri_dsd2pcm_translate(st, (end - po) / os, pi, is, (float *)po, os / sizeof(float));
97 362 }
98
99 #define FMT_PAIR_FUNC(out, in) [(out) + AV_SAMPLE_FMT_NB*(in)] = CONV_FUNC_NAME(out, in)
100
101 static conv_func_type * const fmt_pair_to_conv_functions[AV_SAMPLE_FMT_NB*AV_SAMPLE_FMT_NB] = {
102 FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8 , AV_SAMPLE_FMT_U8 ),
103 FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_U8 ),
104 FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_U8 ),
105 FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_U8 ),
106 FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_U8 ),
107 FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_U8 ),
108 FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8 , AV_SAMPLE_FMT_S16),
109 FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S16),
110 FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S16),
111 FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S16),
112 FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S16),
113 FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S16),
114 FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8 , AV_SAMPLE_FMT_S32),
115 FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S32),
116 FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S32),
117 FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S32),
118 FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S32),
119 FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S32),
120 FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8 , AV_SAMPLE_FMT_FLT),
121 FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_FLT),
122 FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_FLT),
123 FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_FLT),
124 FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_FLT),
125 FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_FLT),
126 FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8 , AV_SAMPLE_FMT_DBL),
127 FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_DBL),
128 FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_DBL),
129 FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_DBL),
130 FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_DBL),
131 FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_DBL),
132 FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8 , AV_SAMPLE_FMT_S64),
133 FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S64),
134 FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S64),
135 FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S64),
136 FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S64),
137 FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S64),
138 FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_DSD),
139 FMT_PAIR_FUNC(AV_SAMPLE_FMT_DSD, AV_SAMPLE_FMT_DSD),
140 };
141
142 ✗ static void cpy1(uint8_t **dst, const uint8_t **src, int len){
143 ✗ memcpy(*dst, *src, len);
144 ✗ }
145 ✗ static void cpy2(uint8_t **dst, const uint8_t **src, int len){
146 ✗ memcpy(*dst, *src, 2*len);
147 ✗ }
148 ✗ static void cpy4(uint8_t **dst, const uint8_t **src, int len){
149 ✗ memcpy(*dst, *src, 4*len);
150 ✗ }
151 ✗ static void cpy8(uint8_t **dst, const uint8_t **src, int len){
152 ✗ memcpy(*dst, *src, 8*len);
153 ✗ }
154
155 2357 AudioConvert *swri_audio_convert_alloc(enum AVSampleFormat out_fmt,
156 enum AVSampleFormat in_fmt,
157 int channels, const int *ch_map,
158 int flags)
159 {
160 AudioConvert *ctx;
161 2357 conv_func_type *f = fmt_pair_to_conv_functions[av_get_packed_sample_fmt(out_fmt) + AV_SAMPLE_FMT_NB*av_get_packed_sample_fmt(in_fmt)];
162
163
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 2357 if (!f)
164 1 return NULL;
165 2356 ctx = av_mallocz(sizeof(*ctx));
166
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 2356 if (!ctx)
167 ✗ return NULL;
168
169
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 2356 if(channels == 1){
170 1674 in_fmt = av_get_planar_sample_fmt( in_fmt);
171 1674 out_fmt = av_get_planar_sample_fmt(out_fmt);
172 }
173
174 2356 ctx->channels = channels;
175 2356 ctx->conv_f = f;
176 2356 ctx->ch_map = ch_map;
177
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 2356 if (in_fmt == AV_SAMPLE_FMT_U8 || in_fmt == AV_SAMPLE_FMT_U8P)
178 26 memset(ctx->silence, 0x80, sizeof(ctx->silence));
179
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 2356 if (in_fmt == AV_SAMPLE_FMT_DSD) {
180 5 swri_dsd2pcm_init();
181 5 memset(ctx->silence, 0x69, sizeof(ctx->silence));
182
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 325 for (int ch = 0; ch < FF_ARRAY_ELEMS(ctx->dsd_state); ch++)
183 320 memset(ctx->dsd_state[ch].buf, 0x69, sizeof(ctx->dsd_state[ch].buf));
184 }
185
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 2356 if(out_fmt == in_fmt && !ch_map) {
187
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 1143 switch(av_get_bytes_per_sample(in_fmt)){
188 ✗ case 1:ctx->simd_f = cpy1; break;
189 569 case 2:ctx->simd_f = cpy2; break;
190 402 case 4:ctx->simd_f = cpy4; break;
191 172 case 8:ctx->simd_f = cpy8; break;
192 }
193 }
194
195 #if ARCH_X86 && HAVE_X86ASM
196 2356 swri_audio_convert_init_x86(ctx, out_fmt, in_fmt, channels);
197 #elif ARCH_ARM
198 swri_audio_convert_init_arm(ctx, out_fmt, in_fmt, channels);
199 #elif ARCH_AARCH64
200 swri_audio_convert_init_aarch64(ctx, out_fmt, in_fmt, channels);
201 #endif
202
203 2356 return ctx;
204 }
205
206 12771 void swri_audio_convert_free(AudioConvert **ctx)
207 {
208 12771 av_freep(ctx);
209 12771 }
210
211 270109 int swri_audio_convert(AudioConvert *ctx, AudioData *out, AudioData *in, int len)
212 {
213 int ch;
214 270109 int off=0;
215
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 270109 const int os= (out->planar ? 1 :out->ch_count) *out->bps;
216 270109 unsigned misaligned = 0;
217
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 270109 av_assert0(ctx->channels == out->ch_count);
219
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 270109 if (ctx->in_simd_align_mask) {
221 ✗ int planes = in->planar ? in->ch_count : 1;
222 ✗ unsigned m = 0;
223 ✗ for (ch = 0; ch < planes; ch++)
224 ✗ m |= (intptr_t)in->ch[ch];
225 ✗ misaligned |= m & ctx->in_simd_align_mask;
226 }
227
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 270109 if (ctx->out_simd_align_mask) {
228 ✗ int planes = out->planar ? out->ch_count : 1;
229 ✗ unsigned m = 0;
230 ✗ for (ch = 0; ch < planes; ch++)
231 ✗ m |= (intptr_t)out->ch[ch];
232 ✗ misaligned |= m & ctx->out_simd_align_mask;
233 }
234
235 //FIXME optimize common cases
236
237
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 270109 if(ctx->simd_f && !ctx->ch_map && !misaligned){
238 425 off = len&~15;
239 av_assert1(off>=0);
240 av_assert1(off<=len);
241 av_assert2(ctx->channels == SWR_CH_MAX || !in->ch[ctx->channels]);
242
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 425 if(off>0){
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 425 if(out->planar == in->planar){
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 188 int planes = out->planar ? out->ch_count : 1;
245
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 376 for(ch=0; ch<planes; ch++){
246
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 188 ctx->simd_f(out->ch+ch, (const uint8_t **)in->ch+ch, off * (out->planar ? 1 :out->ch_count));
247 }
248 }else{
249 237 ctx->simd_f(out->ch, (const uint8_t **)in->ch, off);
250 }
251 }
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 425 if(off == len)
253 421 return 0;
254 }
255
256
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 742130 for(ch=0; ch<ctx->channels; ch++){
257
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 472442 const int ich= ctx->ch_map ? ctx->ch_map[ch] : ch;
258
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 472442 const int is= ich < 0 ? 0 : (in->planar ? 1 : in->ch_count) * in->bps;
259
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 472442 const uint8_t *pi= ich < 0 ? ctx->silence : in->ch[ich];
260 472442 uint8_t *end, *po = out->ch[ch];
261
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 472442 if(!po)
262 52 continue;
263 472390 end = po + os * len;
264 472390 ctx->conv_f(&ctx->dsd_state[ch], po+off*os, pi+off*is, is, os, end);
265 }
266 269688 return 0;
267 }
268