35 #define CONV_FUNC_NAME(dst_fmt, src_fmt) conv_ ## src_fmt ## _to_ ## dst_fmt 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)\ 41 uint8_t *end2 = end - 3*os;\ 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;\ 49 *(otype*)po = expr; pi += is; po += os;\ 60 CONV_FUNC(AV_SAMPLE_FMT_U8 ,
uint8_t, AV_SAMPLE_FMT_S16, (*(const int16_t*)pi>>8) + 0x80)
61 CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_S16, *(const int16_t*)pi)
62 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 CONV_FUNC(AV_SAMPLE_FMT_FLT,
float , AV_SAMPLE_FMT_S16, *(const int16_t*)pi*(1.0
f/ (1<<15)))
65 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 CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_S32, *(const int32_t*)pi>>16)
68 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*(1.0
f/ (1
U<<31)))
71 CONV_FUNC(AV_SAMPLE_FMT_DBL,
double , AV_SAMPLE_FMT_S32, *(const int32_t*)pi*(1.0 / (1
U<<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*(1.0
f/ (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 CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, av_clip_int16(
lrintf(*(const
float*)pi * (1<<15))))
80 CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, av_clipl_int32(
llrintf(*(const
float*)pi * (1
U<<31))))
81 CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_FLT,
llrintf(*(const
float*)pi * (UINT64_C(1)<<63)))
82 CONV_FUNC(AV_SAMPLE_FMT_FLT,
float , AV_SAMPLE_FMT_FLT, *(const
float*)pi)
83 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 CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, av_clip_int16(
lrint(*(const
double*)pi * (1<<15))))
86 CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, av_clipl_int32(
llrint(*(const
double*)pi * (1
U<<31))))
87 CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_DBL,
llrint(*(const
double*)pi * (UINT64_C(1)<<63)))
88 CONV_FUNC(AV_SAMPLE_FMT_FLT,
float , AV_SAMPLE_FMT_DBL, *(const
double*)pi)
89 CONV_FUNC(AV_SAMPLE_FMT_DBL,
double , AV_SAMPLE_FMT_DBL, *(const
double*)pi)
91 #define FMT_PAIR_FUNC(out, in) [(out) + AV_SAMPLE_FMT_NB*(in)] = CONV_FUNC_NAME(out, in) 132 static void cpy1(uint8_t **dst,
const uint8_t **
src,
int len){
133 memcpy(*dst, *src, len);
135 static void cpy2(uint8_t **dst,
const uint8_t **src,
int len){
136 memcpy(*dst, *src, 2*len);
138 static void cpy4(uint8_t **dst,
const uint8_t **src,
int len){
139 memcpy(*dst, *src, 4*len);
141 static void cpy8(uint8_t **dst,
const uint8_t **src,
int len){
142 memcpy(*dst, *src, 8*len);
170 if(out_fmt == in_fmt && !ch_map) {
172 case 1:ctx->
simd_f = cpy1;
break;
173 case 2:ctx->
simd_f = cpy2;
break;
174 case 4:ctx->
simd_f = cpy4;
break;
175 case 8:ctx->
simd_f = cpy8;
break;
196 unsigned misaligned = 0;
203 for (ch = 0; ch <
planes; ch++)
204 m |= (intptr_t)in->
ch[ch];
210 for (ch = 0; ch <
planes; ch++)
211 m |= (intptr_t)out->
ch[ch];
225 for(ch=0; ch<
planes; ch++){
229 ctx->
simd_f(out->
ch, (
const uint8_t **)in->
ch, off);
239 const uint8_t *pi= ich < 0 ? ctx->silence : in->
ch[ich];
240 uint8_t *po= out->
ch[ch];
241 uint8_t *
end= po + os*len;
244 ctx->
conv_f(po+off*os, pi+off*is, is, os,
end);
#define FMT_PAIR_FUNC(out, in)
Number of sample formats. DO NOT USE if linking dynamically.
av_cold void swri_audio_convert_init_aarch64(struct AudioConvert *ac, enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels)
Audio buffer used for intermediate storage between conversion phases.
int ch_count
number of channels
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
av_cold void swri_audio_convert_init_arm(struct AudioConvert *ac, enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels)
void( conv_func_type)(uint8_t *po, const uint8_t *pi, int is, int os, uint8_t *end)
#define av_assert0(cond)
assert() equivalent, that is always enabled.
#define av_assert2(cond)
assert() equivalent, that does lie in speed critical code.
static av_cold int end(AVCodecContext *avctx)
enum AVSampleFormat av_get_planar_sample_fmt(enum AVSampleFormat sample_fmt)
Get the planar alternative form of the given sample format.
int swri_audio_convert(AudioConvert *ctx, AudioData *out, AudioData *in, int len)
Convert between audio sample formats.
simple assert() macros that are a bit more flexible than ISO C assert().
void swri_audio_convert_init_x86(struct AudioConvert *ac, enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels)
#define av_assert1(cond)
assert() equivalent, that does not lie in speed critical code.
Audio format conversion routines.
AVSampleFormat
Audio sample formats.
static const struct @324 planes[]
Replacements for frequently missing libm functions.
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(const int16_t *) pi >> 8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t,*(const int16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t,*(const int16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(const int32_t *) pi >> 24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t,*(const int32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t,*(const int32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(const float *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(const float *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(const float *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(const double *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(const double *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(const double *) pi *(1U<< 31))))#define SET_CONV_FUNC_GROUP(ofmt, ifmt) static void set_generic_function(AudioConvert *ac){}void ff_audio_convert_free(AudioConvert **ac){if(!*ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);}AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels, int sample_rate, int apply_map){AudioConvert *ac;int in_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) return NULL;ac->avr=avr;ac->out_fmt=out_fmt;ac->in_fmt=in_fmt;ac->channels=channels;ac->apply_map=apply_map;if(avr->dither_method!=AV_RESAMPLE_DITHER_NONE &&av_get_packed_sample_fmt(out_fmt)==AV_SAMPLE_FMT_S16 &&av_get_bytes_per_sample(in_fmt) > 2){ac->dc=ff_dither_alloc(avr, out_fmt, in_fmt, channels, sample_rate, apply_map);if(!ac->dc){av_free(ac);return NULL;}return ac;}in_planar=ff_sample_fmt_is_planar(in_fmt, channels);out_planar=ff_sample_fmt_is_planar(out_fmt, channels);if(in_planar==out_planar){ac->func_type=CONV_FUNC_TYPE_FLAT;ac->planes=in_planar?ac->channels:1;}else if(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;else ac->func_type=CONV_FUNC_TYPE_DEINTERLEAVE;set_generic_function(ac);if(ARCH_AARCH64) ff_audio_convert_init_aarch64(ac);if(ARCH_ARM) ff_audio_convert_init_arm(ac);if(ARCH_X86) ff_audio_convert_init_x86(ac);return ac;}int ff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in){int use_generic=1;int len=in->nb_samples;int p;if(ac->dc){av_log(ac->avr, AV_LOG_TRACE,"%d samples - audio_convert: %s to %s (dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));return ff_convert_dither(ac-> in
#define CONV_FUNC(ofmt, otype, ifmt, expr)
#define flags(name, subs,...)
int av_get_bytes_per_sample(enum AVSampleFormat sample_fmt)
Return number of bytes per sample.
enum AVSampleFormat av_get_packed_sample_fmt(enum AVSampleFormat sample_fmt)
Get the packed alternative form of the given sample format.
uint8_t silence[8]
silence input sample
void swri_audio_convert_free(AudioConvert **ctx)
Free audio sample format converter context.
The official guide to swscale for confused that is
int planar
1 if planar audio, 0 otherwise
uint8_t * ch[SWR_CH_MAX]
samples buffer per channel
AudioConvert * swri_audio_convert_alloc(enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels, const int *ch_map, int flags)
Create an audio sample format converter context.