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mpegaudiodsp.h
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1 /*
2  * This file is part of FFmpeg.
3  *
4  * FFmpeg is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * FFmpeg is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with FFmpeg; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17  */
18 
19 #ifndef AVCODEC_MPEGAUDIODSP_H
20 #define AVCODEC_MPEGAUDIODSP_H
21 
22 #include <stdint.h>
23 #include "libavutil/common.h"
24 
25 typedef struct MPADSPContext {
26  void (*apply_window_float)(float *synth_buf, float *window,
27  int *dither_state, float *samples, int incr);
29  int *dither_state, int16_t *samples, int incr);
30  void (*dct32_float)(float *dst, const float *src);
31  void (*dct32_fixed)(int *dst, const int *src);
32 
33  void (*imdct36_blocks_float)(float *out, float *buf, float *in,
34  int count, int switch_point, int block_type);
35  void (*imdct36_blocks_fixed)(int *out, int *buf, int *in,
36  int count, int switch_point, int block_type);
38 
40 
42 extern float ff_mpa_synth_window_float[];
43 
44 extern const int32_t ff_mpa_enwindow[257];
45 
47  int32_t *synth_buf_ptr, int *synth_buf_offset,
48  int32_t *window, int *dither_state,
49  int16_t *samples, int incr,
50  int32_t *sb_samples);
51 
53  float *synth_buf_ptr, int *synth_buf_offset,
54  float *window, int *dither_state,
55  float *samples, int incr,
56  float *sb_samples);
57 
64 
65 void ff_mpa_synth_init_float(float *window);
67 
68 void ff_mpadsp_apply_window_float(float *synth_buf, float *window,
69  int *dither_state, float *samples,
70  int incr);
72  int *dither_state, int16_t *samples,
73  int incr);
74 
75 void ff_imdct36_blocks_float(float *out, float *buf, float *in,
76  int count, int switch_point, int block_type);
77 
78 void ff_imdct36_blocks_fixed(int *out, int *buf, int *in,
79  int count, int switch_point, int block_type);
80 
81 void ff_init_mpadsp_tabs_float(void);
82 void ff_init_mpadsp_tabs_fixed(void);
83 
84 /** For SSE implementation, MDCT_BUF_SIZE/2 should be 128-bit aligned */
85 #define MDCT_BUF_SIZE FFALIGN(36, 2*4)
86 
87 extern int ff_mdct_win_fixed[8][MDCT_BUF_SIZE];
88 extern float ff_mdct_win_float[8][MDCT_BUF_SIZE];
89 
90 #endif /* AVCODEC_MPEGAUDIODSP_H */
const char * s
Definition: avisynth_c.h:768
void(* imdct36_blocks_float)(float *out, float *buf, float *in, int count, int switch_point, int block_type)
Definition: mpegaudiodsp.h:33
void(* imdct36_blocks_fixed)(int *out, int *buf, int *in, int count, int switch_point, int block_type)
Definition: mpegaudiodsp.h:35
void ff_mpadsp_apply_window_float(float *synth_buf, float *window, int *dither_state, float *samples, int incr)
int32_t ff_mpa_synth_window_fixed[]
void(* dct32_float)(float *dst, const float *src)
Definition: mpegaudiodsp.h:30
float ff_mdct_win_float[8][MDCT_BUF_SIZE]
#define src
Definition: vp8dsp.c:254
const int32_t ff_mpa_enwindow[257]
void ff_mpa_synth_init_fixed(int32_t *window)
void ff_mpa_synth_init_float(float *window)
void ff_mpadsp_init_x86(MPADSPContext *s)
Definition: mpegaudiodsp.c:242
void ff_imdct36_blocks_fixed(int *out, int *buf, int *in, int count, int switch_point, int block_type)
void ff_mpa_synth_filter_float(MPADSPContext *s, float *synth_buf_ptr, int *synth_buf_offset, float *window, int *dither_state, float *samples, int incr, float *sb_samples)
void ff_imdct36_blocks_float(float *out, float *buf, float *in, int count, int switch_point, int block_type)
GLsizei count
Definition: opengl_enc.c:109
void ff_mpadsp_init_aarch64(MPADSPContext *s)
static SDL_Window * window
Definition: ffplay.c:362
typedef void(APIENTRY *FF_PFNGLACTIVETEXTUREPROC)(GLenum texture)
#define MDCT_BUF_SIZE
For SSE implementation, MDCT_BUF_SIZE/2 should be 128-bit aligned.
Definition: mpegaudiodsp.h:85
void ff_mpadsp_init_ppc(MPADSPContext *s)
int32_t
float ff_mpa_synth_window_float[]
void ff_mpa_synth_filter_fixed(MPADSPContext *s, int32_t *synth_buf_ptr, int *synth_buf_offset, int32_t *window, int *dither_state, int16_t *samples, int incr, int32_t *sb_samples)
void ff_mpadsp_init_mipsfpu(MPADSPContext *s)
void(* dct32_fixed)(int *dst, const int *src)
Definition: mpegaudiodsp.h:31
void ff_init_mpadsp_tabs_fixed(void)
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(constint16_t *) pi >>8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(constint32_t *) pi >>24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(constfloat *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(constfloat *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(constfloat *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(constdouble *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(constdouble *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(constdouble *) pi *(1U<< 31))))#defineSET_CONV_FUNC_GROUP(ofmt, ifmt) staticvoidset_generic_function(AudioConvert *ac){}voidff_audio_convert_free(AudioConvert **ac){if(!*ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);}AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enumAVSampleFormatout_fmt, enumAVSampleFormatin_fmt, intchannels, intsample_rate, intapply_map){AudioConvert *ac;intin_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) returnNULL;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);returnNULL;}returnac;}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;}elseif(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;elseac->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);returnac;}intff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in){intuse_generic=1;intlen=in->nb_samples;intp;if(ac->dc){av_log(ac->avr, AV_LOG_TRACE,"%dsamples-audio_convert:%sto%s(dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));returnff_convert_dither(ac-> in
void ff_mpadsp_init_mipsdsp(MPADSPContext *s)
void * buf
Definition: avisynth_c.h:690
void ff_mpadsp_apply_window_fixed(int32_t *synth_buf, int32_t *window, int *dither_state, int16_t *samples, int incr)
void(* apply_window_float)(float *synth_buf, float *window, int *dither_state, float *samples, int incr)
Definition: mpegaudiodsp.h:26
int ff_mdct_win_fixed[8][MDCT_BUF_SIZE]
void(* apply_window_fixed)(int32_t *synth_buf, int32_t *window, int *dither_state, int16_t *samples, int incr)
Definition: mpegaudiodsp.h:28
common internal and external API header
void ff_mpadsp_init(MPADSPContext *s)
Definition: mpegaudiodsp.c:27
void ff_mpadsp_init_arm(MPADSPContext *s)
FILE * out
Definition: movenc.c:54
void ff_init_mpadsp_tabs_float(void)