APEContext Struct Reference

Decoder context. More...

Data Fields
AVClass *	class
	class for AVOptions More...
AVCodecContext *	avctx
BswapDSPContext	bdsp
LLAudDSPContext	adsp
int	channels
int	samples
	samples left to decode in current frame More...
int	bps
int	fileversion
	codec version, very important in decoding process More...
int	compression_level
	compression levels More...
int	fset
	which filter set to use (calculated from compression level) More...
int	flags
	global decoder flags More...
uint32_t	CRC
	signalled frame CRC More...
uint32_t	CRC_state
	accumulated CRC More...
int	frameflags
	frame flags More...
APEPredictor	predictor
	predictor used for final reconstruction More...
APEPredictor64	predictor64
	64bit predictor used for final reconstruction More...
int32_t *	decoded_buffer
int	decoded_size
int32_t *	decoded [MAX_CHANNELS]
	decoded data for each channel More...
int32_t *	interim_buffer
int	interim_size
int32_t *	interim [MAX_CHANNELS]
	decoded data for each channel More...
int	blocks_per_loop
	maximum number of samples to decode for each call More...
int16_t *	filterbuf [APE_FILTER_LEVELS]
	filter memory More...
APERangecoder	rc
	rangecoder used to decode actual values More...
APERice	riceX
	rice code parameters for the second channel More...
APERice	riceY
	rice code parameters for the first channel More...
APEFilter	filters [APE_FILTER_LEVELS][2]
	filters used for reconstruction More...
GetBitContext	gb
uint8_t *	data
	current frame data More...
uint8_t *	data_end
	frame data end More...
int	data_size
	frame data allocated size More...
const uint8_t *	ptr
	current position in frame data More...
int	error
int	interim_mode
void(*	entropy_decode_mono )(struct APEContext *ctx, int blockstodecode)
void(*	entropy_decode_stereo )(struct APEContext *ctx, int blockstodecode)
void(*	predictor_decode_mono )(struct APEContext *ctx, int count)
void(*	predictor_decode_stereo )(struct APEContext *ctx, int count)
uint32_t	junklength
uint32_t	firstframe
uint32_t	totalsamples
int	currentframe
APEFrame *	frames
int16_t	fileversion
int16_t	padding1
uint32_t	descriptorlength
uint32_t	headerlength
uint32_t	seektablelength
uint32_t	wavheaderlength
uint32_t	audiodatalength
uint32_t	audiodatalength_high
uint32_t	wavtaillength
uint8_t	md5 [16]
uint16_t	compressiontype
uint16_t	formatflags
uint32_t	blocksperframe
uint32_t	finalframeblocks
uint32_t	totalframes
uint16_t	bps
uint16_t	channels
uint32_t	samplerate

Detailed Description

Decoder context.

Definition at line 152 of file apedec.c.

Field Documentation

class

AVClass* APEContext::class

class for AVOptions

Definition at line 153 of file apedec.c.

avctx

AVCodecContext* APEContext::avctx

Definition at line 154 of file apedec.c.

Referenced by ape_decode_close(), ape_decode_frame(), ape_decode_init(), ape_flush(), and ff_aptx_init().

bdsp

BswapDSPContext APEContext::bdsp

Definition at line 155 of file apedec.c.

adsp

LLAudDSPContext APEContext::adsp

Definition at line 156 of file apedec.c.

channels [1/2]

int APEContext::channels

Definition at line 157 of file apedec.c.

Referenced by ape_dumpinfo(), and ape_read_header().

samples

int APEContext::samples

samples left to decode in current frame

Definition at line 158 of file apedec.c.

bps [1/2]

int APEContext::bps

Definition at line 159 of file apedec.c.

Referenced by ape_dumpinfo(), and ape_read_header().

fileversion [1/2]

int APEContext::fileversion

codec version, very important in decoding process

Definition at line 161 of file apedec.c.

Referenced by ape_decode_value_3900(), ape_dumpinfo(), and ape_read_header().

compression_level

int APEContext::compression_level

compression levels

Definition at line 162 of file apedec.c.

fset

int APEContext::fset

which filter set to use (calculated from compression level)

Definition at line 163 of file apedec.c.

flags

int APEContext::flags

global decoder flags

Definition at line 164 of file apedec.c.

CRC

uint32_t APEContext::CRC

signalled frame CRC

Definition at line 166 of file apedec.c.

CRC_state

uint32_t APEContext::CRC_state

accumulated CRC

Definition at line 167 of file apedec.c.

frameflags

int APEContext::frameflags

frame flags

Definition at line 168 of file apedec.c.

predictor

APEPredictor APEContext::predictor

predictor used for final reconstruction

Definition at line 169 of file apedec.c.

predictor64

APEPredictor64 APEContext::predictor64

64bit predictor used for final reconstruction

Definition at line 170 of file apedec.c.

decoded_buffer

int32_t* APEContext::decoded_buffer

Definition at line 172 of file apedec.c.

decoded_size

int APEContext::decoded_size

Definition at line 173 of file apedec.c.

decoded

int32_t* APEContext::decoded[MAX_CHANNELS]

decoded data for each channel

Definition at line 174 of file apedec.c.

Referenced by filter_3800(), filter_fast_3320(), predictor_update_3930(), and predictor_update_filter().

interim_buffer

int32_t* APEContext::interim_buffer

Definition at line 175 of file apedec.c.

interim_size

int APEContext::interim_size

Definition at line 176 of file apedec.c.

interim

int32_t* APEContext::interim[MAX_CHANNELS]

decoded data for each channel

Definition at line 177 of file apedec.c.

blocks_per_loop

int APEContext::blocks_per_loop

maximum number of samples to decode for each call

Definition at line 178 of file apedec.c.

filterbuf

int16_t* APEContext::filterbuf[APE_FILTER_LEVELS]

filter memory

Definition at line 180 of file apedec.c.

rc

APERangecoder APEContext::rc

rangecoder used to decode actual values

Definition at line 182 of file apedec.c.

riceX

APERice APEContext::riceX

rice code parameters for the second channel

Definition at line 183 of file apedec.c.

riceY

APERice APEContext::riceY

rice code parameters for the first channel

Definition at line 184 of file apedec.c.

filters

APEFilter APEContext::filters[APE_FILTER_LEVELS][2]

filters used for reconstruction

Definition at line 185 of file apedec.c.

gb

GetBitContext APEContext::gb

Definition at line 186 of file apedec.c.

Referenced by ape_decode_value_3860(), and get_rice_ook().

data

uint8_t* APEContext::data

current frame data

Definition at line 188 of file apedec.c.

data_end

uint8_t* APEContext::data_end

frame data end

Definition at line 189 of file apedec.c.

data_size

int APEContext::data_size

frame data allocated size

Definition at line 190 of file apedec.c.

ptr

const uint8_t* APEContext::ptr

current position in frame data

Definition at line 191 of file apedec.c.

error

int APEContext::error

Definition at line 193 of file apedec.c.

interim_mode

int APEContext::interim_mode

Definition at line 194 of file apedec.c.

Referenced by predictor_decode_stereo_3950(), and predictor_update_filter().

entropy_decode_mono

void(* APEContext::entropy_decode_mono) (struct APEContext *ctx, int blockstodecode)

Definition at line 196 of file apedec.c.

entropy_decode_stereo

void(* APEContext::entropy_decode_stereo) (struct APEContext *ctx, int blockstodecode)

Definition at line 197 of file apedec.c.

predictor_decode_mono

void(* APEContext::predictor_decode_mono) (struct APEContext *ctx, int count)

Definition at line 198 of file apedec.c.

predictor_decode_stereo

void(* APEContext::predictor_decode_stereo) (struct APEContext *ctx, int count)

Definition at line 199 of file apedec.c.

junklength

uint32_t APEContext::junklength

Definition at line 55 of file ape.c.

Referenced by ape_dumpinfo(), and ape_read_header().

firstframe

uint32_t APEContext::firstframe

Definition at line 56 of file ape.c.

Referenced by ape_dumpinfo(), and ape_read_header().

totalsamples

uint32_t APEContext::totalsamples

Definition at line 57 of file ape.c.

Referenced by ape_dumpinfo(), and ape_read_header().

currentframe

int APEContext::currentframe

Definition at line 58 of file ape.c.

Referenced by ape_read_header(), ape_read_packet(), and ape_read_seek().

frames

APEFrame* APEContext::frames

Definition at line 59 of file ape.c.

Referenced by ape_dumpinfo(), ape_read_close(), ape_read_header(), and ape_read_packet().

fileversion [2/2]

int16_t APEContext::fileversion

Definition at line 62 of file ape.c.

padding1

int16_t APEContext::padding1

Definition at line 63 of file ape.c.

Referenced by ape_read_header().

descriptorlength

uint32_t APEContext::descriptorlength

Definition at line 64 of file ape.c.

Referenced by ape_dumpinfo(), and ape_read_header().

headerlength

uint32_t APEContext::headerlength

Definition at line 65 of file ape.c.

Referenced by ape_dumpinfo(), and ape_read_header().

seektablelength

uint32_t APEContext::seektablelength

Definition at line 66 of file ape.c.

Referenced by ape_dumpinfo(), and ape_read_header().

wavheaderlength

uint32_t APEContext::wavheaderlength

Definition at line 67 of file ape.c.

Referenced by ape_dumpinfo(), and ape_read_header().

audiodatalength

uint32_t APEContext::audiodatalength

Definition at line 68 of file ape.c.

Referenced by ape_dumpinfo(), and ape_read_header().

audiodatalength_high

uint32_t APEContext::audiodatalength_high

Definition at line 69 of file ape.c.

Referenced by ape_dumpinfo(), and ape_read_header().

wavtaillength

uint32_t APEContext::wavtaillength

Definition at line 70 of file ape.c.

Referenced by ape_dumpinfo(), and ape_read_header().

md5

uint8_t APEContext::md5[16]

Definition at line 71 of file ape.c.

Referenced by ape_dumpinfo(), and ape_read_header().

compressiontype

uint16_t APEContext::compressiontype

Definition at line 74 of file ape.c.

Referenced by ape_dumpinfo(), and ape_read_header().

formatflags

uint16_t APEContext::formatflags

Definition at line 75 of file ape.c.

Referenced by ape_dumpinfo(), and ape_read_header().

blocksperframe

uint32_t APEContext::blocksperframe

Definition at line 76 of file ape.c.

Referenced by ape_dumpinfo(), ape_read_header(), and ape_read_packet().

finalframeblocks

uint32_t APEContext::finalframeblocks

Definition at line 77 of file ape.c.

Referenced by ape_dumpinfo(), ape_read_header(), and ape_read_packet().

totalframes

uint32_t APEContext::totalframes

Definition at line 78 of file ape.c.

Referenced by ape_dumpinfo(), ape_read_header(), and ape_read_packet().

bps [2/2]

uint16_t APEContext::bps

Definition at line 79 of file ape.c.

channels [2/2]

uint16_t APEContext::channels

Definition at line 80 of file ape.c.

samplerate

uint32_t APEContext::samplerate

Definition at line 81 of file ape.c.

Referenced by ape_dumpinfo(), and ape_read_header().

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The documentation for this struct was generated from the following files:

• libavcodec/apedec.c
• libavformat/ape.c