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;\
91 #define FMT_PAIR_FUNC(out, in) [(out) + AV_SAMPLE_FMT_NB*(in)] = CONV_FUNC_NAME(out, in)
136 memcpy(*dst, *
src, 2*
len);
139 memcpy(*dst, *
src, 4*
len);
142 memcpy(*dst, *
src, 8*
len);
166 ctx->ch_map = ch_map;
168 memset(
ctx->silence, 0x80,
sizeof(
ctx->silence));
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;
195 const int os= (
out->planar ? 1 :
out->ch_count) *
out->bps;
196 unsigned misaligned = 0;
200 if (
ctx->in_simd_align_mask) {
203 for (ch = 0; ch <
planes; ch++)
204 m |= (intptr_t)
in->ch[ch];
205 misaligned |= m &
ctx->in_simd_align_mask;
207 if (
ctx->out_simd_align_mask) {
210 for (ch = 0; ch <
planes; ch++)
211 m |= (intptr_t)
out->ch[ch];
212 misaligned |= m &
ctx->out_simd_align_mask;
217 if(
ctx->simd_f && !
ctx->ch_map && !misaligned){
223 if(
out->planar ==
in->planar){
225 for(ch=0; ch<
planes; ch++){
236 for(ch=0; ch<
ctx->channels; ch++){
237 const int ich=
ctx->ch_map ?
ctx->ch_map[ch] : ch;
238 const int is= ich < 0 ? 0 : (
in->planar ? 1 :
in->ch_count) *
in->bps;
239 const uint8_t *pi= ich < 0 ? ctx->silence :
in->ch[ich];
244 ctx->conv_f(po+off*os, pi+off*
is,
is, os, end);
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 FMT_PAIR_FUNC(out, in)
#define CONV_FUNC(ofmt, otype, ifmt, expr)
Audio format conversion routines.
void() conv_func_type(uint8_t *po, const uint8_t *pi, int is, int os, uint8_t *end)
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.
void swri_audio_convert_free(AudioConvert **ctx)
Free audio sample format converter context.
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().
#define av_assert2(cond)
assert() equivalent, that does lie in speed critical code.
#define av_assert1(cond)
assert() equivalent, that does not lie in speed critical code.
#define av_assert0(cond)
assert() equivalent, that is always enabled.
#define flags(name, subs,...)
#define is(width, name, range_min, range_max, subs,...)
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
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.
enum AVSampleFormat av_get_planar_sample_fmt(enum AVSampleFormat sample_fmt)
Get the planar alternative form of the given sample format.
AVSampleFormat
Audio sample formats.
@ AV_SAMPLE_FMT_S64
signed 64 bits
@ AV_SAMPLE_FMT_U8P
unsigned 8 bits, planar
@ AV_SAMPLE_FMT_NB
Number of sample formats. DO NOT USE if linking dynamically.
@ AV_SAMPLE_FMT_S32
signed 32 bits
@ AV_SAMPLE_FMT_DBL
double
@ AV_SAMPLE_FMT_S16
signed 16 bits
Replacements for frequently missing libm functions.
av_cold void swri_audio_convert_init_aarch64(struct AudioConvert *ac, enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels)
av_cold void swri_audio_convert_init_arm(struct AudioConvert *ac, enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels)
static const struct @322 planes[]
Audio buffer used for intermediate storage between conversion phases.
void swri_audio_convert_init_x86(struct AudioConvert *ac, enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels)