FFmpeg: APEContext Struct Reference

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Data Fields

APEContext Struct Reference

Decoder context. More...

Data Fields

AVClass * class

class for AVOptions

AVCodecContext * avctx

DSPContext dsp

int channels

int samples

samples left to decode in current frame

int bps

int fileversion

codec version, very important in decoding process

int compression_level

compression levels

int fset

which filter set to use (calculated from compression level)

int flags

global decoder flags

uint32_t CRC

frame CRC

int frameflags

frame flags

APEPredictor predictor

predictor used for final reconstruction

int32_t * decoded_buffer

int decoded_size

int32_t * decoded [MAX_CHANNELS]

decoded data for each channel

int blocks_per_loop

maximum number of samples to decode for each call

int16_t * filterbuf [APE_FILTER_LEVELS]

filter memory

APERangecoder rc

rangecoder used to decode actual values

APERice riceX

rice code parameters for the second channel

APERice riceY

rice code parameters for the first channel

APEFilter filters [APE_FILTER_LEVELS][2]

filters used for reconstruction

GetBitContext gb

uint8_t * data

current frame data

uint8_t * data_end

frame data end

int data_size

frame data allocated size

const uint8_t * ptr

current position in frame data

int error

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

char magic [4]

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

uint32_t * seektable

uint8_t * bittable

Detailed Description

Decoder context.

Definition at line 133 of file apedec.c.

Field Documentation

AVClass* APEContext::class

class for AVOptions

Definition at line 134 of file apedec.c.

AVCodecContext* APEContext::avctx

Definition at line 135 of file apedec.c.

Referenced by ape_decode_init(), ape_decode_value_3860(), ape_decode_value_3900(), ape_unpack_mono(), and ape_unpack_stereo().

DSPContext APEContext::dsp

Definition at line 136 of file apedec.c.

Referenced by ape_decode_frame(), ape_decode_init(), and do_apply_filter().

int APEContext::channels

Definition at line 137 of file apedec.c.

Referenced by ape_decode_frame(), ape_decode_init(), ape_dumpinfo(), ape_read_header(), and ape_unpack_mono().

int APEContext::samples

samples left to decode in current frame

Definition at line 138 of file apedec.c.

Referenced by ape_decode_frame(), and ape_flush().

int APEContext::bps

Definition at line 139 of file apedec.c.

Referenced by ape_decode_frame(), ape_decode_init(), ape_dumpinfo(), and ape_read_header().

int APEContext::fileversion

codec version, very important in decoding process

Definition at line 141 of file apedec.c.

Referenced by ape_decode_frame(), ape_decode_init(), ape_decode_value_3860(), ape_decode_value_3900(), ape_dumpinfo(), ape_read_header(), apply_filter(), init_entropy_decoder(), init_predictor_decoder(), predictor_decode_mono_3800(), and predictor_decode_stereo_3800().

int APEContext::compression_level

compression levels

Definition at line 142 of file apedec.c.

Referenced by ape_decode_init(), init_predictor_decoder(), predictor_decode_mono_3800(), and predictor_decode_stereo_3800().

int APEContext::fset

which filter set to use (calculated from compression level)

Definition at line 143 of file apedec.c.

Referenced by ape_apply_filters(), ape_decode_init(), and init_frame_decoder().

int APEContext::flags

global decoder flags

Definition at line 144 of file apedec.c.

Referenced by ape_decode_init().

uint32_t APEContext::CRC

frame CRC

Definition at line 146 of file apedec.c.

Referenced by init_entropy_decoder().

int APEContext::frameflags

frame flags

Definition at line 147 of file apedec.c.

Referenced by ape_decode_frame(), ape_unpack_mono(), ape_unpack_stereo(), and init_entropy_decoder().

APEPredictor APEContext::predictor

predictor used for final reconstruction

Definition at line 148 of file apedec.c.

Referenced by init_predictor_decoder(), predictor_decode_mono_3800(), predictor_decode_mono_3930(), predictor_decode_mono_3950(), predictor_decode_stereo_3800(), predictor_decode_stereo_3930(), and predictor_decode_stereo_3950().

int32_t* APEContext::decoded_buffer

Definition at line 150 of file apedec.c.

Referenced by ape_decode_close(), and ape_decode_frame().

int APEContext::decoded_size

Definition at line 151 of file apedec.c.

Referenced by ape_decode_close(), and ape_decode_frame().

int32_t* APEContext::decoded[MAX_CHANNELS]

decoded data for each channel

Definition at line 152 of file apedec.c.

Referenced by ape_decode_frame(), ape_unpack_mono(), ape_unpack_stereo(), entropy_decode_mono_0000(), entropy_decode_mono_3860(), entropy_decode_mono_3900(), entropy_decode_mono_3990(), entropy_decode_stereo_0000(), entropy_decode_stereo_3860(), entropy_decode_stereo_3900(), entropy_decode_stereo_3930(), entropy_decode_stereo_3990(), filter_3800(), filter_fast_3320(), predictor_decode_mono_3800(), predictor_decode_mono_3930(), predictor_decode_mono_3950(), predictor_decode_stereo_3800(), predictor_decode_stereo_3930(), and predictor_decode_stereo_3950().

int APEContext::blocks_per_loop

maximum number of samples to decode for each call

Definition at line 153 of file apedec.c.

Referenced by ape_decode_frame().

int16_t* APEContext::filterbuf[APE_FILTER_LEVELS]

filter memory

Definition at line 155 of file apedec.c.

Referenced by ape_decode_close(), ape_decode_init(), and init_frame_decoder().

APERangecoder APEContext::rc

rangecoder used to decode actual values

Definition at line 157 of file apedec.c.

Referenced by range_dec_normalize(), range_decode_culfreq(), range_decode_culshift(), range_decode_update(), and range_start_decoding().

APERice APEContext::riceX

rice code parameters for the second channel

Definition at line 158 of file apedec.c.

Referenced by entropy_decode_stereo_0000(), entropy_decode_stereo_3860(), entropy_decode_stereo_3900(), entropy_decode_stereo_3930(), entropy_decode_stereo_3990(), and init_entropy_decoder().

APERice APEContext::riceY

rice code parameters for the first channel

Definition at line 159 of file apedec.c.

Referenced by entropy_decode_mono_0000(), entropy_decode_mono_3860(), entropy_decode_mono_3900(), entropy_decode_mono_3990(), entropy_decode_stereo_0000(), entropy_decode_stereo_3860(), entropy_decode_stereo_3900(), entropy_decode_stereo_3930(), entropy_decode_stereo_3990(), and init_entropy_decoder().

APEFilter APEContext::filters[APE_FILTER_LEVELS][2]

filters used for reconstruction

Definition at line 160 of file apedec.c.

Referenced by ape_apply_filters(), and init_frame_decoder().

GetBitContext APEContext::gb

Definition at line 161 of file apedec.c.

Referenced by ape_decode_frame(), decode_array_0000(), entropy_decode_mono_0000(), entropy_decode_mono_3860(), entropy_decode_stereo_0000(), entropy_decode_stereo_3860(), and init_entropy_decoder().

uint8_t* APEContext::data

current frame data

Definition at line 163 of file apedec.c.

Referenced by ape_decode_close(), and ape_decode_frame().

uint8_t* APEContext::data_end

frame data end

Definition at line 164 of file apedec.c.

Referenced by ape_decode_frame(), init_entropy_decoder(), and range_dec_normalize().

int APEContext::data_size

frame data allocated size

Definition at line 165 of file apedec.c.

Referenced by ape_decode_close(), and ape_decode_frame().

const uint8_t* APEContext::ptr

current position in frame data

Definition at line 166 of file apedec.c.

Referenced by ape_decode_frame(), entropy_decode_stereo_3900(), init_entropy_decoder(), range_dec_normalize(), and range_start_decoding().

int APEContext::error

Definition at line 168 of file apedec.c.

Referenced by ape_decode_frame(), range_dec_normalize(), and range_get_symbol().

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

Definition at line 170 of file apedec.c.

Referenced by ape_decode_init(), and ape_unpack_mono().

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

Definition at line 171 of file apedec.c.

Referenced by ape_decode_init(), and ape_unpack_stereo().

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

Definition at line 172 of file apedec.c.

Referenced by ape_decode_init(), and ape_unpack_mono().

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

Definition at line 173 of file apedec.c.

Referenced by ape_decode_init(), and ape_unpack_stereo().

uint32_t APEContext::junklength

Definition at line 53 of file ape.c.

Referenced by ape_dumpinfo(), and ape_read_header().

uint32_t APEContext::firstframe

Definition at line 54 of file ape.c.

Referenced by ape_dumpinfo(), and ape_read_header().

uint32_t APEContext::totalsamples

Definition at line 55 of file ape.c.

Referenced by ape_dumpinfo(), and ape_read_header().

int APEContext::currentframe

Definition at line 56 of file ape.c.

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

APEFrame* APEContext::frames

Definition at line 57 of file ape.c.

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

char APEContext::magic[4]

Definition at line 60 of file ape.c.

Referenced by ape_dumpinfo().

int16_t APEContext::fileversion

Definition at line 61 of file ape.c.

int16_t APEContext::padding1

Definition at line 62 of file ape.c.

Referenced by ape_read_header().

uint32_t APEContext::descriptorlength

Definition at line 63 of file ape.c.

Referenced by ape_dumpinfo(), and ape_read_header().

uint32_t APEContext::headerlength

Definition at line 64 of file ape.c.

Referenced by ape_dumpinfo(), and ape_read_header().

uint32_t APEContext::seektablelength

Definition at line 65 of file ape.c.

Referenced by ape_dumpinfo(), and ape_read_header().

uint32_t APEContext::wavheaderlength

Definition at line 66 of file ape.c.

Referenced by ape_dumpinfo(), and ape_read_header().

uint32_t APEContext::audiodatalength

Definition at line 67 of file ape.c.

Referenced by ape_dumpinfo(), and ape_read_header().

uint32_t APEContext::audiodatalength_high

Definition at line 68 of file ape.c.

Referenced by ape_dumpinfo(), and ape_read_header().

uint32_t APEContext::wavtaillength

Definition at line 69 of file ape.c.

Referenced by ape_dumpinfo(), and ape_read_header().

uint8_t APEContext::md5[16]

Definition at line 70 of file ape.c.

Referenced by ape_dumpinfo(), and ape_read_header().

uint16_t APEContext::compressiontype

Definition at line 73 of file ape.c.

Referenced by ape_dumpinfo(), and ape_read_header().

uint16_t APEContext::formatflags

Definition at line 74 of file ape.c.

Referenced by ape_dumpinfo(), and ape_read_header().

uint32_t APEContext::blocksperframe

Definition at line 75 of file ape.c.

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

uint32_t APEContext::finalframeblocks

Definition at line 76 of file ape.c.

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

uint32_t APEContext::totalframes

Definition at line 77 of file ape.c.

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

uint16_t APEContext::bps

Definition at line 78 of file ape.c.

uint16_t APEContext::channels

Definition at line 79 of file ape.c.

uint32_t APEContext::samplerate

Definition at line 80 of file ape.c.

Referenced by ape_dumpinfo(), and ape_read_header().

uint32_t* APEContext::seektable

Definition at line 83 of file ape.c.

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

uint8_t* APEContext::bittable

Definition at line 84 of file ape.c.

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

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

libavcodec/apedec.c
libavformat/ape.c

Generated on Sat Jan 25 2014 19:52:25 for FFmpeg by doxygen 1.8.2