FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libswresample/audioconvert.c
Date: 2025-11-03 23:54:27
Exec Total Coverage
Lines: 67 111 60.4%
Functions: 20 43 46.5%
Branches: 110 209 52.6%
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 "libavutil/avassert.h"
29 #include "libavutil/libm.h"
30 #include "libavutil/mem.h"
31 #include "libavutil/samplefmt.h"
32 #include "audioconvert.h"
33
34
35 #define CONV_FUNC_NAME(dst_fmt, src_fmt) conv_ ## src_fmt ## _to_ ## dst_fmt
36
37 //FIXME rounding ?
38 #define CONV_FUNC(ofmt, otype, ifmt, expr)\
39 static void CONV_FUNC_NAME(ofmt, ifmt)(uint8_t *po, const uint8_t *pi, int is, int os, uint8_t *end)\
40 {\
41 uint8_t *end2 = end - 3*os;\
42 while(po < end2){\
43 *(otype*)po = expr; pi += is; po += os;\
44 *(otype*)po = expr; pi += is; po += os;\
45 *(otype*)po = expr; pi += is; po += os;\
46 *(otype*)po = expr; pi += is; po += os;\
47 }\
48 while(po < end){\
49 *(otype*)po = expr; pi += is; po += os;\
50 }\
51 }
52
53 //FIXME put things below under ifdefs so we do not waste space for cases no codec will need
54 ✗ CONV_FUNC(AV_SAMPLE_FMT_U8 , uint8_t, AV_SAMPLE_FMT_U8 , *(const uint8_t*)pi)
55
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 1374675 CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_U8 , (*(const uint8_t*)pi - 0x80U)<<8)
56 ✗ CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_U8 , (*(const uint8_t*)pi - 0x80U)<<24)
57 ✗ CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_U8 , (uint64_t)((*(const uint8_t*)pi - 0x80U))<<56)
58 ✗ CONV_FUNC(AV_SAMPLE_FMT_FLT, float , AV_SAMPLE_FMT_U8 , (*(const uint8_t*)pi - 0x80)*(1.0f/ (1<<7)))
59 ✗ CONV_FUNC(AV_SAMPLE_FMT_DBL, double , AV_SAMPLE_FMT_U8 , (*(const uint8_t*)pi - 0x80)*(1.0 / (1<<7)))
60
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 2233944 CONV_FUNC(AV_SAMPLE_FMT_U8 , uint8_t, AV_SAMPLE_FMT_S16, (*(const int16_t*)pi>>8) + 0x80)
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 112174417 CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_S16, *(const int16_t*)pi)
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 2516444 CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_S16, *(const int16_t*)pi * (1 << 16))
63 ✗ CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S16, (uint64_t)(*(const int16_t*)pi)<<48)
64
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 4293996 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)))
66 ✗ CONV_FUNC(AV_SAMPLE_FMT_U8 , uint8_t, AV_SAMPLE_FMT_S32, (*(const int32_t*)pi>>24) + 0x80)
67
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 9138373 CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_S32, *(const int32_t*)pi>>16)
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 11704181 CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_S32, *(const int32_t*)pi)
69 ✗ CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S32, (uint64_t)(*(const int32_t*)pi)<<32)
70 ✗ CONV_FUNC(AV_SAMPLE_FMT_FLT, float , AV_SAMPLE_FMT_S32, *(const int32_t*)pi*(1.0f/ (1U<<31)))
71
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 672586 CONV_FUNC(AV_SAMPLE_FMT_DBL, double , AV_SAMPLE_FMT_S32, *(const int32_t*)pi*(1.0 / (1U<<31)))
72 ✗ CONV_FUNC(AV_SAMPLE_FMT_U8 , uint8_t, AV_SAMPLE_FMT_S64, (*(const int64_t*)pi>>56) + 0x80)
73 ✗ CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_S64, *(const int64_t*)pi>>48)
74 ✗ CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_S64, *(const int64_t*)pi>>32)
75 ✗ CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S64, *(const int64_t*)pi)
76 ✗ CONV_FUNC(AV_SAMPLE_FMT_FLT, float , AV_SAMPLE_FMT_S64, *(const int64_t*)pi*(1.0f/ (UINT64_C(1)<<63)))
77 ✗ CONV_FUNC(AV_SAMPLE_FMT_DBL, double , AV_SAMPLE_FMT_S64, *(const int64_t*)pi*(1.0 / (UINT64_C(1)<<63)))
78 ✗ CONV_FUNC(AV_SAMPLE_FMT_U8 , uint8_t, AV_SAMPLE_FMT_FLT, av_clip_uint8( lrintf(*(const float*)pi * (1<<7)) + 0x80))
79
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 38053092 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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 101703 CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, av_clipl_int32(llrintf(*(const float*)pi * (1U<<31))))
81 ✗ CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_FLT, llrintf(*(const float*)pi * (UINT64_C(1)<<63)))
82
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 2631047 CONV_FUNC(AV_SAMPLE_FMT_FLT, float , AV_SAMPLE_FMT_FLT, *(const float*)pi)
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 66215 CONV_FUNC(AV_SAMPLE_FMT_DBL, double , AV_SAMPLE_FMT_FLT, *(const float*)pi)
84 ✗ CONV_FUNC(AV_SAMPLE_FMT_U8 , uint8_t, AV_SAMPLE_FMT_DBL, av_clip_uint8( lrint(*(const double*)pi * (1<<7)) + 0x80))
85
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 3450111 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))))
87 ✗ CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_DBL, llrint(*(const double*)pi * (UINT64_C(1)<<63)))
88
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 66215 CONV_FUNC(AV_SAMPLE_FMT_FLT, float , AV_SAMPLE_FMT_DBL, *(const double*)pi)
89
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 2281037 CONV_FUNC(AV_SAMPLE_FMT_DBL, double , AV_SAMPLE_FMT_DBL, *(const double*)pi)
90
91 #define FMT_PAIR_FUNC(out, in) [(out) + AV_SAMPLE_FMT_NB*(in)] = CONV_FUNC_NAME(out, in)
92
93 static conv_func_type * const fmt_pair_to_conv_functions[AV_SAMPLE_FMT_NB*AV_SAMPLE_FMT_NB] = {
94 FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8 , AV_SAMPLE_FMT_U8 ),
95 FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_U8 ),
96 FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_U8 ),
97 FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_U8 ),
98 FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_U8 ),
99 FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_U8 ),
100 FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8 , AV_SAMPLE_FMT_S16),
101 FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S16),
102 FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S16),
103 FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S16),
104 FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S16),
105 FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S16),
106 FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8 , AV_SAMPLE_FMT_S32),
107 FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S32),
108 FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S32),
109 FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S32),
110 FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S32),
111 FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S32),
112 FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8 , AV_SAMPLE_FMT_FLT),
113 FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_FLT),
114 FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_FLT),
115 FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_FLT),
116 FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_FLT),
117 FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_FLT),
118 FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8 , AV_SAMPLE_FMT_DBL),
119 FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_DBL),
120 FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_DBL),
121 FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_DBL),
122 FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_DBL),
123 FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_DBL),
124 FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8 , AV_SAMPLE_FMT_S64),
125 FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S64),
126 FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S64),
127 FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S64),
128 FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S64),
129 FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S64),
130 };
131
132 ✗ static void cpy1(uint8_t **dst, const uint8_t **src, int len){
133 ✗ memcpy(*dst, *src, len);
134 ✗ }
135 ✗ static void cpy2(uint8_t **dst, const uint8_t **src, int len){
136 ✗ memcpy(*dst, *src, 2*len);
137 ✗ }
138 ✗ static void cpy4(uint8_t **dst, const uint8_t **src, int len){
139 ✗ memcpy(*dst, *src, 4*len);
140 ✗ }
141 ✗ static void cpy8(uint8_t **dst, const uint8_t **src, int len){
142 ✗ memcpy(*dst, *src, 8*len);
143 ✗ }
144
145 2264 AudioConvert *swri_audio_convert_alloc(enum AVSampleFormat out_fmt,
146 enum AVSampleFormat in_fmt,
147 int channels, const int *ch_map,
148 int flags)
149 {
150 AudioConvert *ctx;
151 2264 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)];
152
153
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 2264 if (!f)
154 ✗ return NULL;
155 2264 ctx = av_mallocz(sizeof(*ctx));
156
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 2264 if (!ctx)
157 ✗ return NULL;
158
159
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 2264 if(channels == 1){
160 1655 in_fmt = av_get_planar_sample_fmt( in_fmt);
161 1655 out_fmt = av_get_planar_sample_fmt(out_fmt);
162 }
163
164 2264 ctx->channels = channels;
165 2264 ctx->conv_f = f;
166 2264 ctx->ch_map = ch_map;
167
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 2264 if (in_fmt == AV_SAMPLE_FMT_U8 || in_fmt == AV_SAMPLE_FMT_U8P)
168 24 memset(ctx->silence, 0x80, sizeof(ctx->silence));
169
170
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 2264 if(out_fmt == in_fmt && !ch_map) {
171
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 1127 switch(av_get_bytes_per_sample(in_fmt)){
172 ✗ case 1:ctx->simd_f = cpy1; break;
173 560 case 2:ctx->simd_f = cpy2; break;
174 398 case 4:ctx->simd_f = cpy4; break;
175 169 case 8:ctx->simd_f = cpy8; break;
176 }
177 }
178
179 #if ARCH_X86 && HAVE_X86ASM && HAVE_MMX
180 2264 swri_audio_convert_init_x86(ctx, out_fmt, in_fmt, channels);
181 #elif ARCH_ARM
182 swri_audio_convert_init_arm(ctx, out_fmt, in_fmt, channels);
183 #elif ARCH_AARCH64
184 swri_audio_convert_init_aarch64(ctx, out_fmt, in_fmt, channels);
185 #endif
186
187 2264 return ctx;
188 }
189
190 12132 void swri_audio_convert_free(AudioConvert **ctx)
191 {
192 12132 av_freep(ctx);
193 12132 }
194
195 225279 int swri_audio_convert(AudioConvert *ctx, AudioData *out, AudioData *in, int len)
196 {
197 int ch;
198 225279 int off=0;
199
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 225279 const int os= (out->planar ? 1 :out->ch_count) *out->bps;
200 225279 unsigned misaligned = 0;
201
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 225279 av_assert0(ctx->channels == out->ch_count);
203
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 225279 if (ctx->in_simd_align_mask) {
205 ✗ int planes = in->planar ? in->ch_count : 1;
206 ✗ unsigned m = 0;
207 ✗ for (ch = 0; ch < planes; ch++)
208 ✗ m |= (intptr_t)in->ch[ch];
209 ✗ misaligned |= m & ctx->in_simd_align_mask;
210 }
211
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 225279 if (ctx->out_simd_align_mask) {
212 ✗ int planes = out->planar ? out->ch_count : 1;
213 ✗ unsigned m = 0;
214 ✗ for (ch = 0; ch < planes; ch++)
215 ✗ m |= (intptr_t)out->ch[ch];
216 ✗ misaligned |= m & ctx->out_simd_align_mask;
217 }
218
219 //FIXME optimize common cases
220
221
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 225279 if(ctx->simd_f && !ctx->ch_map && !misaligned){
222 105 off = len&~15;
223 av_assert1(off>=0);
224 av_assert1(off<=len);
225 av_assert2(ctx->channels == SWR_CH_MAX || !in->ch[ctx->channels]);
226
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 105 if(off>0){
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 105 if(out->planar == in->planar){
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 58 int planes = out->planar ? out->ch_count : 1;
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 116 for(ch=0; ch<planes; ch++){
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 58 ctx->simd_f(out->ch+ch, (const uint8_t **)in->ch+ch, off * (out->planar ? 1 :out->ch_count));
231 }
232 }else{
233 47 ctx->simd_f(out->ch, (const uint8_t **)in->ch, off);
234 }
235 }
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 105 if(off == len)
237 105 return 0;
238 }
239
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 624381 for(ch=0; ch<ctx->channels; ch++){
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 399207 const int ich= ctx->ch_map ? ctx->ch_map[ch] : ch;
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 399207 const int is= ich < 0 ? 0 : (in->planar ? 1 : in->ch_count) * in->bps;
243
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 399207 const uint8_t *pi= ich < 0 ? ctx->silence : in->ch[ich];
244 399207 uint8_t *end, *po = out->ch[ch];
245
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 399207 if(!po)
246 52 continue;
247 399155 end = po + os * len;
248 399155 ctx->conv_f(po+off*os, pi+off*is, is, os, end);
249 }
250 225174 return 0;
251 }
252