ac3dec_float.c File Reference

#include "config_components.h"
#include "ac3dec.h"
#include "codec_internal.h"
#include "profiles.h"
#include "ac3dec.c"

Go to the source code of this file.

Macros
#define	IMDCT_TYPE   AV_TX_FLOAT_MDCT
	Upmix delay samples from stereo to original channel layout.
#define	EXPORT   (AV_OPT_FLAG_EXPORT | AV_OPT_FLAG_READONLY)

Variables
static const AVOption	options []
static const AVClass	ac3_eac3_decoder_class
const FFCodec	ff_ac3_decoder

Macro Definition Documentation

IMDCT_TYPE

#define IMDCT_TYPE   AV_TX_FLOAT_MDCT

Upmix delay samples from stereo to original channel layout.

Definition at line 32 of file ac3dec_float.c.

EXPORT

#define EXPORT   (AV_OPT_FLAG_EXPORT | AV_OPT_FLAG_READONLY)

Definition at line 42 of file ac3dec_float.c.

Variable Documentation

options

const AVOption options[]

static

Initial value:

= {
    { "cons_noisegen", "enable consistent noise generation", OFFSET(consistent_noise_generation), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, PAR },
    { "drc_scale", "percentage of dynamic range compression to apply", OFFSET(drc_scale), AV_OPT_TYPE_FLOAT, {.dbl = 1.0}, 0.0, 6.0, PAR },
    { "heavy_compr", "enable heavy dynamic range compression", OFFSET(heavy_compression), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, PAR },
    { "target_level", "target level in -dBFS (0 not applied)", OFFSET(target_level), AV_OPT_TYPE_INT, {.i64 = 0 }, -31, 0, PAR },
 
{"dmix_mode", "Preferred Stereo Downmix Mode", OFFSET(preferred_stereo_downmix), AV_OPT_TYPE_INT, {.i64 = -1 }, -1, 3, EXPORT, .unit = "dmix_mode"},
{"ltrt_cmixlev",   "Lt/Rt Center Mix Level",   OFFSET(ltrt_center_mix_level),    AV_OPT_TYPE_FLOAT, {.dbl = -1.0 }, -1.0, 2.0, EXPORT },
{"ltrt_surmixlev", "Lt/Rt Surround Mix Level", OFFSET(ltrt_surround_mix_level),  AV_OPT_TYPE_FLOAT, {.dbl = -1.0 }, -1.0, 2.0, EXPORT },
{"loro_cmixlev",   "Lo/Ro Center Mix Level",   OFFSET(loro_center_mix_level),    AV_OPT_TYPE_FLOAT, {.dbl = -1.0 }, -1.0, 2.0, EXPORT },
{"loro_surmixlev", "Lo/Ro Surround Mix Level", OFFSET(loro_surround_mix_level),  AV_OPT_TYPE_FLOAT, {.dbl = -1.0 }, -1.0, 2.0, EXPORT },
 
    { "downmix", "Request a specific channel layout from the decoder", OFFSET(downmix_layout), AV_OPT_TYPE_CHLAYOUT, {.str = NULL}, .flags = PAR },
 
    { NULL},
}

Definition at line 43 of file ac3dec_float.c.

ac3_eac3_decoder_class

const AVClass ac3_eac3_decoder_class

static

Initial value:

= {
    .class_name = "(E-)AC3 decoder",
    .item_name  = av_default_item_name,
    .option     = options,
    .version    = LIBAVUTIL_VERSION_INT,
}

Definition at line 60 of file ac3dec_float.c.

ff_ac3_decoder

const FFCodec ff_ac3_decoder

Initial value:

= {
    .p.name         = "ac3",
    .p.type         = AVMEDIA_TYPE_AUDIO,
    .p.id           = AV_CODEC_ID_AC3,
    .priv_data_size = sizeof (AC3DecodeContext),
    .init           = ac3_decode_init,
    .flush          = ac3_decode_flush,
    .close          = ac3_decode_end,
    FF_CODEC_DECODE_CB(ac3_decode_frame),
    .p.capabilities = AV_CODEC_CAP_CHANNEL_CONF |
                      AV_CODEC_CAP_DR1,
    CODEC_LONG_NAME("ATSC A/52A (AC-3)"),
    CODEC_SAMPLEFMTS(AV_SAMPLE_FMT_FLTP),
    .p.priv_class   = &ac3_eac3_decoder_class,
    .caps_internal  = FF_CODEC_CAP_INIT_CLEANUP,
}

Definition at line 67 of file ac3dec_float.c.