Libav
Macros | Functions | Variables
ac3enc_float.c File Reference

floating-point AC-3 encoder. More...

#include "internal.h"
#include "audiodsp.h"
#include "ac3enc.h"
#include "eac3enc.h"
#include "kbdwin.h"
#include "ac3enc_opts_template.c"
#include "ac3enc_template.c"

Go to the source code of this file.

Macros

#define CONFIG_AC3ENC_FLOAT   1
 
#define AC3ENC_TYPE   AC3ENC_TYPE_AC3
 

Functions

av_cold void ff_ac3_float_mdct_end (AC3EncodeContext *s)
 Finalize MDCT and free allocated memory. More...
 
av_cold int ff_ac3_float_mdct_init (AC3EncodeContext *s)
 Initialize MDCT tables. More...
 
static int normalize_samples (AC3EncodeContext *s)
 
static void scale_coefficients (AC3EncodeContext *s)
 
static void clip_coefficients (AudioDSPContext *adsp, float *coef, unsigned int len)
 
static CoefType calc_cpl_coord (CoefSumType energy_ch, CoefSumType energy_cpl)
 
av_cold int ff_ac3_float_encode_init (AVCodecContext *avctx)
 

Variables

static const AVClass ac3enc_class
 
AVCodec ff_ac3_encoder
 

Detailed Description

floating-point AC-3 encoder.

Definition in file ac3enc_float.c.

Macro Definition Documentation

#define CONFIG_AC3ENC_FLOAT   1

Definition at line 29 of file ac3enc_float.c.

#define AC3ENC_TYPE   AC3ENC_TYPE_AC3

Definition at line 37 of file ac3enc_float.c.

Function Documentation

av_cold void ff_ac3_float_mdct_end ( AC3EncodeContext s)

Finalize MDCT and free allocated memory.

Parameters
sAC-3 encoder private context

Definition at line 50 of file ac3enc_float.c.

Referenced by ff_ac3_encode_init().

av_cold int ff_ac3_float_mdct_init ( AC3EncodeContext s)

Initialize MDCT tables.

Parameters
sAC-3 encoder private context
Returns
0 on success, negative error code on failure

Definition at line 63 of file ac3enc_float.c.

Referenced by ff_ac3_encode_init().

static int normalize_samples ( AC3EncodeContext s)
static

Definition at line 89 of file ac3enc_float.c.

static void scale_coefficients ( AC3EncodeContext s)
static

Definition at line 98 of file ac3enc_float.c.

static void clip_coefficients ( AudioDSPContext adsp,
float *  coef,
unsigned int  len 
)
static

Definition at line 111 of file ac3enc_float.c.

static CoefType calc_cpl_coord ( CoefSumType  energy_ch,
CoefSumType  energy_cpl 
)
static

Definition at line 121 of file ac3enc_float.c.

av_cold int ff_ac3_float_encode_init ( AVCodecContext avctx)

Definition at line 129 of file ac3enc_float.c.

Variable Documentation

const AVClass ac3enc_class
static
Initial value:
= { "AC-3 Encoder", av_default_item_name,
LIBAVUTIL_VERSION_INT
Definition: eval.c:55
static const AVOption ac3_options[]
av_default_item_name
Return the context name.
Definition: dnxhdenc.c:52

Definition at line 39 of file ac3enc_float.c.

AVCodec ff_ac3_encoder
Initial value:
= {
.name = "ac3",
.long_name = NULL_IF_CONFIG_SMALL("ATSC A/52A (AC-3)"),
.priv_data_size = sizeof(AC3EncodeContext),
.priv_class = &ac3enc_class,
.channel_layouts = ff_ac3_channel_layouts,
.defaults = ac3_defaults,
}
float, planar
Definition: samplefmt.h:72
int ff_ac3_float_encode_frame(AVCodecContext *avctx, AVPacket *avpkt, const AVFrame *frame, int *got_packet_ptr)
av_cold int ff_ac3_encode_close(AVCodecContext *avctx)
Finalize encoding and free any memory allocated by the encoder.
Definition: ac3enc.c:2019
av_cold int ff_ac3_float_encode_init(AVCodecContext *avctx)
Definition: ac3enc_float.c:129
static const AVClass ac3enc_class
Definition: ac3enc_float.c:39
const uint64_t ff_ac3_channel_layouts[19]
List of supported channel layouts.
Definition: ac3enc.c:80
sample_fmts
Definition: avconv_filter.c:68
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:150
AVSampleFormat
Audio Sample Formats.
Definition: samplefmt.h:61
AV_SAMPLE_FMT_NONE
Definition: avconv_filter.c:68
static void close(AVCodecParserContext *s)
Definition: h264_parser.c:490
static const AVCodecDefault ac3_defaults[]
AC-3 encoder private context.
Definition: ac3enc.h:160
static av_cold int init(AVCodecParserContext *s)
Definition: h264_parser.c:499

Definition at line 136 of file ac3enc_float.c.