audiotoolboxenc.c File Reference

#include <AudioToolbox/AudioToolbox.h>
#include "libavfilter/bufferqueue.h"
#include "config.h"
#include "audio_frame_queue.h"
#include "avcodec.h"
#include "bytestream.h"
#include "codec_internal.h"
#include "encode.h"
#include "internal.h"
#include "libavformat/isom.h"
#include "libavutil/avassert.h"
#include "libavutil/channel_layout.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavutil/log.h"

Go to the source code of this file.

Data Structures
struct	ATDecodeContext

Macros
#define	FF_BUFQUEUE_SIZE   256
#define	AE   AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
#define	FFAT_ENC_CLASS(NAME)
#define	FFAT_ENC(NAME, ID, PROFILES, CAPS, CHANNEL_LAYOUTS, CH_LAYOUTS)

Functions
static UInt32	ffat_get_format_id (enum AVCodecID codec, int profile)
static int	ffat_update_ctx (AVCodecContext *avctx)
static int	read_descr (GetByteContext *gb, int *tag)
static int	get_ilbc_mode (AVCodecContext *avctx)
static av_cold int	get_channel_label (int channel)
static int	remap_layout (AudioChannelLayout *layout, const AVChannelLayout *in_layout)
static int	get_aac_tag (const AVChannelLayout *in_layout)
static av_cold int	ffat_init_encoder (AVCodecContext *avctx)
static OSStatus	ffat_encode_callback (AudioConverterRef converter, UInt32 *nb_packets, AudioBufferList *data, AudioStreamPacketDescription **packets, void *inctx)
static int	ffat_encode (AVCodecContext *avctx, AVPacket *avpkt, const AVFrame *frame, int *got_packet_ptr)
static av_cold void	ffat_encode_flush (AVCodecContext *avctx)
static av_cold int	ffat_close_encoder (AVCodecContext *avctx)

Variables
static const AVProfile	aac_profiles []
static const AVOption	options []
static const AVChannelLayout	aac_at_ch_layouts []

Macro Definition Documentation

FF_BUFQUEUE_SIZE

#define FF_BUFQUEUE_SIZE   256

Definition at line 25 of file audiotoolboxenc.c.

Referenced by ff_bufqueue_get(), ff_bufqueue_is_full(), and ff_opus_psy_postencode_update().

AE

#define AE   AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM

Definition at line 617 of file audiotoolboxenc.c.

FFAT_ENC_CLASS

#define FFAT_ENC_CLASS

(

NAME

)

Value:

    static const AVClass ffat_##NAME##_enc_class = { \
        .class_name = "at_" #NAME "_enc", \
        .item_name  = av_default_item_name, \
        .option     = options, \
        .version    = LIBAVUTIL_VERSION_INT, \
    };

Definition at line 631 of file audiotoolboxenc.c.

FFAT_ENC

#define FFAT_ENC	(		NAME,
			ID,
			PROFILES,
			CAPS,
			CHANNEL_LAYOUTS,
			CH_LAYOUTS )

Value:

    FFAT_ENC_CLASS(NAME) \
    const FFCodec ff_##NAME##_at_encoder = { \
        .p.name         = #NAME "_at", \
        CODEC_LONG_NAME(#NAME " (AudioToolbox)"), \
        .p.type         = AVMEDIA_TYPE_AUDIO, \
        .p.id           = ID, \
        .priv_data_size = sizeof(ATDecodeContext), \
        .init           = ffat_init_encoder, \
        .close          = ffat_close_encoder, \
        FF_CODEC_ENCODE_CB(ffat_encode), \
        .flush          = ffat_encode_flush, \
        .p.priv_class   = &ffat_##NAME##_enc_class, \
        .p.capabilities = AV_CODEC_CAP_DELAY | \
                          AV_CODEC_CAP_ENCODER_FLUSH CAPS, \
        .p.profiles     = PROFILES, \
        .p.wrapper_name = "at", \
        CODEC_CH_LAYOUTS_ARRAY(CH_LAYOUTS), \
        CODEC_SAMPLEFMTS(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_U8), \
    };

Definition at line 639 of file audiotoolboxenc.c.

Function Documentation

ffat_get_format_id()

static UInt32 ffat_get_format_id ( enum AVCodecID codec, int profile )

static

Definition at line 59 of file audiotoolboxenc.c.

Referenced by ffat_init_encoder().

ffat_update_ctx()

static int ffat_update_ctx ( AVCodecContext * avctx )

static

Definition at line 96 of file audiotoolboxenc.c.

Referenced by ffat_init_encoder().

read_descr()

static int read_descr ( GetByteContext * gb, int * tag )

static

Definition at line 151 of file audiotoolboxenc.c.

Referenced by ffat_init_encoder().

get_ilbc_mode()

static int get_ilbc_mode ( AVCodecContext * avctx )

static

Definition at line 165 of file audiotoolboxenc.c.

Referenced by ffat_init_encoder().

get_channel_label()

static av_cold int get_channel_label ( int channel )

static

Definition at line 177 of file audiotoolboxenc.c.

Referenced by remap_layout().

remap_layout()

static int remap_layout ( AudioChannelLayout * layout, const AVChannelLayout * in_layout )

static

Definition at line 202 of file audiotoolboxenc.c.

Referenced by ffat_init_encoder().

get_aac_tag()

static int get_aac_tag ( const AVChannelLayout * in_layout )

static

Definition at line 222 of file audiotoolboxenc.c.

Referenced by ffat_init_encoder().

ffat_init_encoder()

static av_cold int ffat_init_encoder ( AVCodecContext * avctx )

static

Definition at line 251 of file audiotoolboxenc.c.

ffat_encode_callback()

static OSStatus ffat_encode_callback ( AudioConverterRef converter, UInt32 * nb_packets, AudioBufferList * data, AudioStreamPacketDescription ** packets, void * inctx )

static

Definition at line 474 of file audiotoolboxenc.c.

Referenced by ffat_encode().

ffat_encode()

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

static

Definition at line 516 of file audiotoolboxenc.c.

ffat_encode_flush()

static av_cold void ffat_encode_flush ( AVCodecContext * avctx )

static

Definition at line 589 of file audiotoolboxenc.c.

ffat_close_encoder()

static av_cold int ffat_close_encoder ( AVCodecContext * avctx )

static

Definition at line 597 of file audiotoolboxenc.c.

Variable Documentation

aac_profiles

const AVProfile aac_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 608 of file audiotoolboxenc.c.

Referenced by matroska_aac_sri().

options

const AVOption options[]

static

Initial value:

= {
 
    {"aac_at_mode", "ratecontrol mode",  0x42 , AV_OPT_TYPE_INT, {.i64 = -1}, -1, kAudioCodecBitRateControlMode_Variable, AE, .unit = "mode"},
        {"auto", "VBR if global quality is given; CBR otherwise", 0, AV_OPT_TYPE_CONST, {.i64 = -1}, INT_MIN, INT_MAX, AE, .unit = "mode"},
        {"cbr",  "constant bitrate", 0, AV_OPT_TYPE_CONST, {.i64 = kAudioCodecBitRateControlMode_Constant}, INT_MIN, INT_MAX, AE, .unit = "mode"},
        {"abr",  "long-term average bitrate", 0, AV_OPT_TYPE_CONST, {.i64 = kAudioCodecBitRateControlMode_LongTermAverage}, INT_MIN, INT_MAX, AE, .unit = "mode"},
        {"cvbr", "constrained variable bitrate", 0, AV_OPT_TYPE_CONST, {.i64 = kAudioCodecBitRateControlMode_VariableConstrained}, INT_MIN, INT_MAX, AE, .unit = "mode"},
        {"vbr" , "variable bitrate", 0, AV_OPT_TYPE_CONST, {.i64 = kAudioCodecBitRateControlMode_Variable}, INT_MIN, INT_MAX, AE, .unit = "mode"},
 
    {"aac_at_quality", "quality vs speed control",  0x42 , AV_OPT_TYPE_INT, {.i64 = 0}, 0, 2, AE},
    { NULL },
}

Definition at line 618 of file audiotoolboxenc.c.

aac_at_ch_layouts

const AVChannelLayout aac_at_ch_layouts[]

static

Initial value:

= {
    AV_CHANNEL_LAYOUT_MONO,
    AV_CHANNEL_LAYOUT_STEREO,
    AV_CHANNEL_LAYOUT_SURROUND,
    AV_CHANNEL_LAYOUT_4POINT0,
    AV_CHANNEL_LAYOUT_5POINT0,
    AV_CHANNEL_LAYOUT_5POINT1,
    AV_CHANNEL_LAYOUT_6POINT0,
    AV_CHANNEL_LAYOUT_6POINT1,
    AV_CHANNEL_LAYOUT_7POINT0,
    AV_CHANNEL_LAYOUT_7POINT1_WIDE_BACK,
    AV_CHANNEL_LAYOUT_QUAD,
    AV_CHANNEL_LAYOUT_OCTAGONAL,
    { 0 },
}

Definition at line 660 of file audiotoolboxenc.c.