FFmpeg
flacdsp.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  *
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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_FLACDSP_H
20 #define AVCODEC_FLACDSP_H
21 
22 #include <stdint.h>
23 #include "libavutil/internal.h"
24 #include "libavutil/samplefmt.h"
25 
26 typedef struct FLACDSPContext {
27  void (*decorrelate[4])(uint8_t **out, int32_t **in, int channels,
28  int len, int shift);
29  void (*lpc16)(int32_t *samples, const int coeffs[32], int order,
30  int qlevel, int len);
31  void (*lpc32)(int32_t *samples, const int coeffs[32], int order,
32  int qlevel, int len);
33  void (*lpc16_encode)(int32_t *res, const int32_t *smp, int len, int order,
34  const int32_t coefs[32], int shift);
35  void (*lpc32_encode)(int32_t *res, const int32_t *smp, int len, int order,
36  const int32_t coefs[32], int shift);
38 
39 void ff_flacdsp_init(FLACDSPContext *c, enum AVSampleFormat fmt, int channels, int bps);
42 
43 #endif /* AVCODEC_FLACDSP_H */
out
FILE * out
Definition: movenc.c:54
FLACDSPContext::decorrelate
void(* decorrelate[4])(uint8_t **out, int32_t **in, int channels, int len, int shift)
Definition: flacdsp.h:27
FLACDSPContext::lpc32_encode
void(* lpc32_encode)(int32_t *res, const int32_t *smp, int len, int order, const int32_t coefs[32], int shift)
Definition: flacdsp.h:35
samplefmt.h
FLACDSPContext::lpc32
void(* lpc32)(int32_t *samples, const int coeffs[32], int order, int qlevel, int len)
Definition: flacdsp.h:31
FLACDSPContext::lpc16
void(* lpc16)(int32_t *samples, const int coeffs[32], int order, int qlevel, int len)
Definition: flacdsp.h:29
channels
channels
Definition: aptx.h:33
FLACDSPContext::lpc16_encode
void(* lpc16_encode)(int32_t *res, const int32_t *smp, int len, int order, const int32_t coefs[32], int shift)
Definition: flacdsp.h:33
ff_flacdsp_init_x86
void ff_flacdsp_init_x86(FLACDSPContext *c, enum AVSampleFormat fmt, int channels, int bps)
Definition: flacdsp_init.c:54
c
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
Definition: undefined.txt:32
bps
unsigned bps
Definition: movenc.c:1598
internal.h
AVSampleFormat
AVSampleFormat
Audio sample formats.
Definition: samplefmt.h:58
len
int len
Definition: vorbis_enc_data.h:426
ff_flacdsp_init
void ff_flacdsp_init(FLACDSPContext *c, enum AVSampleFormat fmt, int channels, int bps)
Definition: flacdsp.c:88
samples
Filter the word “frame” indicates either a video frame or a group of audio samples
Definition: filter_design.txt:8
shift
static int shift(int a, int b)
Definition: sonic.c:83
int32_t
int32_t
Definition: audioconvert.c:56
FLACDSPContext
Definition: flacdsp.h:26
ff_flacdsp_init_arm
void ff_flacdsp_init_arm(FLACDSPContext *c, enum AVSampleFormat fmt, int channels, int bps)
Definition: flacdsp_init_arm.c:28