x86/fft.h
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18 
19 #ifndef AVCODEC_X86_FFT_H
20 #define AVCODEC_X86_FFT_H
21 
22 #include "libavcodec/fft.h"
23 
24 void ff_fft_permute_sse(FFTContext *s, FFTComplex *z);
25 void ff_fft_calc_avx(FFTContext *s, FFTComplex *z);
26 void ff_fft_calc_sse(FFTContext *s, FFTComplex *z);
27 void ff_fft_calc_3dnow(FFTContext *s, FFTComplex *z);
28 void ff_fft_calc_3dnowext(FFTContext *s, FFTComplex *z);
29 
30 void ff_imdct_calc_3dnow(FFTContext *s, FFTSample *output, const FFTSample *input);
31 void ff_imdct_half_3dnow(FFTContext *s, FFTSample *output, const FFTSample *input);
32 void ff_imdct_calc_3dnowext(FFTContext *s, FFTSample *output, const FFTSample *input);
33 void ff_imdct_half_3dnowext(FFTContext *s, FFTSample *output, const FFTSample *input);
34 void ff_imdct_calc_sse(FFTContext *s, FFTSample *output, const FFTSample *input);
35 void ff_imdct_half_sse(FFTContext *s, FFTSample *output, const FFTSample *input);
36 void ff_imdct_half_avx(FFTContext *s, FFTSample *output, const FFTSample *input);
37 void ff_dct32_float_sse(FFTSample *out, const FFTSample *in);
38 void ff_dct32_float_sse2(FFTSample *out, const FFTSample *in);
39 void ff_dct32_float_avx(FFTSample *out, const FFTSample *in);
40 
41 #endif /* AVCODEC_X86_FFT_H */
ff_fft_calc_avx
void ff_fft_calc_avx(FFTContext *s, FFTComplex *z)
s
const char * s
Definition: avisynth_c.h:668
ff_imdct_half_3dnowext
void ff_imdct_half_3dnowext(FFTContext *s, FFTSample *output, const FFTSample *input)
in
About Git write you should know how to use GIT properly Luckily Git comes with excellent documentation git help man git shows you the available git< command > help man git< command > shows information about the subcommand< command > The most comprehensive manual is the website Git Reference visit they are quite exhaustive You do not need a special username or password All you need is to provide a ssh public key to the Git server admin What follows now is a basic introduction to Git and some FFmpeg specific guidelines Read it at least if you are granted commit privileges to the FFmpeg project you are expected to be familiar with these rules I if not You can get git from etc no matter how small Every one of them has been saved from looking like a fool by this many times It s very easy for stray debug output or cosmetic modifications to slip in
Definition: git-howto.txt:5
ff_imdct_half_3dnow
void ff_imdct_half_3dnow(FFTContext *s, FFTSample *output, const FFTSample *input)
ff_dct32_float_avx
void ff_dct32_float_avx(FFTSample *out, const FFTSample *in)
ff_dct32_float_sse2
void ff_dct32_float_sse2(FFTSample *out, const FFTSample *in)
ff_dct32_float_sse
void ff_dct32_float_sse(FFTSample *out, const FFTSample *in)
ff_fft_calc_3dnow
void ff_fft_calc_3dnow(FFTContext *s, FFTComplex *z)
ff_fft_calc_sse
void ff_fft_calc_sse(FFTContext *s, FFTComplex *z)
input
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame This method is called when a frame is wanted on an output For an input
Definition: filter_design.txt:216
FFTSample
float FFTSample
Definition: avfft.h:35
ff_imdct_calc_3dnowext
void ff_imdct_calc_3dnowext(FFTContext *s, FFTSample *output, const FFTSample *input)
FFTContext
Definition: fft.h:62
ff_imdct_calc_sse
void ff_imdct_calc_sse(FFTContext *s, FFTSample *output, const FFTSample *input)
ff_imdct_half_sse
void ff_imdct_half_sse(FFTContext *s, FFTSample *output, const FFTSample *input)
ff_imdct_calc_3dnow
void ff_imdct_calc_3dnow(FFTContext *s, FFTSample *output, const FFTSample *input)
ff_fft_calc_3dnowext
void ff_fft_calc_3dnowext(FFTContext *s, FFTComplex *z)
ff_imdct_half_avx
void ff_imdct_half_avx(FFTContext *s, FFTSample *output, const FFTSample *input)
output
these buffered frames must be flushed immediately if a new input produces new output(Example:frame rate-doubling filter:filter_frame must(1) flush the second copy of the previous frame, if it is still there,(2) push the first copy of the incoming frame,(3) keep the second copy for later.) If the input frame is not enough to produce output
ff_fft_permute_sse
void ff_fft_permute_sse(FFTContext *s, FFTComplex *z)
out
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=av_sample_fmt_is_planar(in_fmt);out_planar=av_sample_fmt_is_planar(out_fmt);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_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_dlog(ac->avr,"%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-> out
Definition: audio_convert.c:194
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