Libav
Macros | Functions
dcadsp.c File Reference
#include <math.h>
#include <string.h>
#include <stdlib.h>
#include "libavutil/internal.h"
#include "libavutil/intfloat.h"
#include "libavcodec/dca.h"
#include "libavcodec/dcadsp.h"
#include "libavcodec/dcadata.h"
#include "checkasm.h"

Go to the source code of this file.

Macros

#define randomize_lfe_fir(size)
 
#define check_lfe_fir(decifactor, eps)
 

Functions

void checkasm_check_dcadsp (void)
 

Macro Definition Documentation

◆ randomize_lfe_fir

#define randomize_lfe_fir (   size)
Value:
do { \
int i; \
for (i = 0; i < size; i++) { \
float f = (float)rnd() / (UINT_MAX >> 1) - 1.0f; \
in[i] = f; \
} \
for (i = 0; i < 256; i++) { \
float f = (float)rnd() / (UINT_MAX >> 1) - 1.0f; \
coeffs[i] = f; \
} \
} while (0)
int size
#define rnd()
Definition: checkasm.h:65

Definition at line 33 of file dcadsp.c.

◆ check_lfe_fir

#define check_lfe_fir (   decifactor,
  eps 
)
Value:
do { \
LOCAL_ALIGNED_16(float, in, [256 / decifactor]); \
LOCAL_ALIGNED_16(float, out0, [decifactor * 2]); \
LOCAL_ALIGNED_16(float, out1, [decifactor * 2]); \
LOCAL_ALIGNED_16(float, coeffs, [256]); \
int i; \
const float * in_ptr = in + (256 / decifactor) - 1; \
declare_func(void, float *out, const float *in, const float *coeffs); \
/* repeat the test several times */ \
for (i = 0; i < 32; i++) { \
int j; \
memset(out0, 0, sizeof(*out0) * 2 * decifactor); \
memset(out1, 0xFF, sizeof(*out1) * 2 * decifactor); \
randomize_lfe_fir(256 / decifactor); \
call_ref(out0, in_ptr, coeffs); \
call_new(out1, in_ptr, coeffs); \
for (j = 0; j < 2 * decifactor; j++) { \
if (!float_near_abs_eps(out0[j], out1[j], eps)) { \
if (0) { \
union av_intfloat32 x, y; x.f = out0[j]; y.f = out1[j]; \
fprintf(stderr, "%3d: %11g (0x%08x); %11g (0x%08x)\n", \
j, x.f, x.i, y.f, y.i); \
} \
fail(); \
break; \
} \
} \
bench_new(out1, in_ptr, coeffs); \
} \
} while (0)
int float_near_abs_eps(float a, float b, float eps)
Definition: checkasm.c:214
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)\", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));return ff_convert_dither(ac-> in
FILE * out
Definition: movenc.c:54

Definition at line 46 of file dcadsp.c.

Referenced by checkasm_check_dcadsp().

Function Documentation

◆ checkasm_check_dcadsp()

void checkasm_check_dcadsp ( void  )

Definition at line 78 of file dcadsp.c.