libfdk-aacenc.c File Reference

#include <fdk-aac/aacenc_lib.h>
#include "libavutil/channel_layout.h"
#include "libavutil/common.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "avcodec.h"
#include "audio_frame_queue.h"
#include "codec_internal.h"
#include "encode.h"
#include "profiles.h"

Go to the source code of this file.

Data Structures
struct	AACContext

Macros
#define	FDKENC_VER_AT_LEAST(vl0, vl1)

Functions
static const char *	aac_get_error (AACENC_ERROR err)
static int	aac_encode_close (AVCodecContext *avctx)
static void	aac_encode_flush (AVCodecContext *avctx)
static av_cold int	aac_encode_init (AVCodecContext *avctx)
static int	aac_encode_frame (AVCodecContext *avctx, AVPacket *avpkt, const AVFrame *frame, int *got_packet_ptr)

Variables
static const AVOption	aac_enc_options []
static const AVClass	aac_enc_class
static const AVProfile	profiles []
static const FFCodecDefault	aac_encode_defaults []
static const AVChannelLayout	aac_ch_layouts [16]
static const int	aac_sample_rates []
const FFCodec	ff_libfdk_aac_encoder

Macro Definition Documentation

FDKENC_VER_AT_LEAST

#define FDKENC_VER_AT_LEAST	(		vl0,
			vl1 )

Value:

0

Definition at line 38 of file libfdk-aacenc.c.

Function Documentation

aac_get_error()

static const char * aac_get_error ( AACENC_ERROR err )

static

Definition at line 95 of file libfdk-aacenc.c.

Referenced by aac_encode_flush(), aac_encode_frame(), and aac_encode_init().

aac_encode_close()

static int aac_encode_close ( AVCodecContext * avctx )

static

Definition at line 127 of file libfdk-aacenc.c.

Referenced by aac_encode_init().

aac_encode_flush()

static void aac_encode_flush ( AVCodecContext * avctx )

static

Definition at line 138 of file libfdk-aacenc.c.

aac_encode_init()

static av_cold int aac_encode_init ( AVCodecContext * avctx )

static

Definition at line 175 of file libfdk-aacenc.c.

aac_encode_frame()

static int aac_encode_frame ( AVCodecContext * avctx, AVPacket * avpkt, const AVFrame * frame, int * got_packet_ptr )

static

Definition at line 456 of file libfdk-aacenc.c.

Variable Documentation

aac_enc_options

const AVOption aac_enc_options[]

static

Initial value:

= {
    { "afterburner", "Afterburner (improved quality)",  0x42 , AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM },
    { "eld_sbr", "Enable SBR for ELD (for SBR in other configurations, use the -profile parameter)",  0x42 , AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM },
 
 
 
    { "signaling", "SBR/PS signaling style",  0x42 , AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 2, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, .unit = "signaling" },
    { "default", "Choose signaling implicitly (explicit hierarchical by default, implicit if global header is disabled)", 0, AV_OPT_TYPE_CONST, { .i64 = -1 }, 0, 0, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, .unit = "signaling" },
    { "implicit", "Implicit backwards compatible signaling", 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, 0, 0, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, .unit = "signaling" },
    { "explicit_sbr", "Explicit SBR, implicit PS signaling", 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, 0, 0, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, .unit = "signaling" },
    { "explicit_hierarchical", "Explicit hierarchical signaling", 0, AV_OPT_TYPE_CONST, { .i64 = 2 }, 0, 0, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, .unit = "signaling" },
    { "latm", "Output LATM/LOAS encapsulated data",  0x42 , AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM },
    { "header_period", "StreamMuxConfig and PCE repetition period (in frames)",  0x42 , AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 0xffff, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM },
    { "vbr", "VBR mode (1-5)",  0x42 , AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 5, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM },
    { "drc_profile", "The desired compression profile for AAC DRC",  0x42 , AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 256, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM },
    { "drc_target_ref", "Expected target reference level at decoder side in dB (for clipping prevention/limiter)",  0x42 , AV_OPT_TYPE_INT, { .i64 = 0.0 }, -31.75, 0, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM },
    { "comp_profile", "The desired compression profile for AAC DRC",  0x42 , AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 256, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM },
    { "comp_target_ref", "Expected target reference level at decoder side in dB (for clipping prevention/limiter)",  0x42 , AV_OPT_TYPE_INT, { .i64 = 0.0 }, -31.75, 0, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM },
    { "prog_ref", "The program reference level or dialog level in dB",  0x42 , AV_OPT_TYPE_INT, { .i64 = 0.0 }, -31.75, 0, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM },
    { "frame_length", "The desired frame length",  0x42 , AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1024, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM },
    FF_AAC_PROFILE_OPTS
    { NULL }
}

Definition at line 64 of file libfdk-aacenc.c.

aac_enc_class

const AVClass aac_enc_class

static

Initial value:

= {
    .class_name = "libfdk_aac",
    .item_name  = av_default_item_name,
    .option     = aac_enc_options,
    .version    = LIBAVUTIL_VERSION_INT,
}

Definition at line 88 of file libfdk-aacenc.c.

profiles

const AVProfile profiles[]

static

Initial value:

= {
    { AV_PROFILE_AAC_LOW,   "LC"       },
    { AV_PROFILE_AAC_HE,    "HE-AAC"   },
    { AV_PROFILE_AAC_HE_V2, "HE-AACv2" },
    { AV_PROFILE_AAC_LD,    "LD"       },
    { AV_PROFILE_AAC_ELD,   "ELD"      },
    { AV_PROFILE_UNKNOWN },
}

Definition at line 540 of file libfdk-aacenc.c.

Referenced by print_profile(), prores_encode_init(), tls_open(), and tls_open().

aac_encode_defaults

const FFCodecDefault aac_encode_defaults[]

static

Initial value:

= {
    { "b", "0" },
    { NULL }
}

Definition at line 549 of file libfdk-aacenc.c.

aac_ch_layouts

const AVChannelLayout aac_ch_layouts[16]

static

Initial value:

= {
    AV_CHANNEL_LAYOUT_MONO,
    AV_CHANNEL_LAYOUT_STEREO,
    AV_CHANNEL_LAYOUT_SURROUND,
    AV_CHANNEL_LAYOUT_4POINT0,
    AV_CHANNEL_LAYOUT_5POINT0_BACK,
    AV_CHANNEL_LAYOUT_5POINT1_BACK,
 
 
 
 
 
 
 
 
 
 
    { 0 },
}

Definition at line 554 of file libfdk-aacenc.c.

aac_sample_rates

const int aac_sample_rates[]

static

Initial value:

= {
    96000, 88200, 64000, 48000, 44100, 32000,
    24000, 22050, 16000, 12000, 11025, 8000, 0
}

Definition at line 574 of file libfdk-aacenc.c.

ff_libfdk_aac_encoder

const FFCodec ff_libfdk_aac_encoder

Initial value:

= {
    .p.name                = "libfdk_aac",
    CODEC_LONG_NAME("Fraunhofer FDK AAC"),
    .p.type                = AVMEDIA_TYPE_AUDIO,
    .p.id                  = AV_CODEC_ID_AAC,
    .p.capabilities        = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY |
                             AV_CODEC_CAP_ENCODER_FLUSH |
                             AV_CODEC_CAP_SMALL_LAST_FRAME,
    .caps_internal         = FF_CODEC_CAP_NOT_INIT_THREADSAFE,
    .priv_data_size        = sizeof(AACContext),
    .init                  = aac_encode_init,
    FF_CODEC_ENCODE_CB(aac_encode_frame),
    .flush                 = aac_encode_flush,
    .close                 = aac_encode_close,
    CODEC_SAMPLEFMTS(AV_SAMPLE_FMT_S16),
    .p.priv_class          = &aac_enc_class,
    .defaults              = aac_encode_defaults,
    .p.profiles            = profiles,
    CODEC_SAMPLERATES_ARRAY(aac_sample_rates),
    .p.wrapper_name        = "libfdk",
    CODEC_CH_LAYOUTS_ARRAY(aac_ch_layouts),
}

Definition at line 579 of file libfdk-aacenc.c.