FFmpeg
Data Fields
WmallDecodeCtx Struct Reference

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Data Fields

AVCodecContext *  avctx
 
AVFrame *  frame
 
uint8_t  frame_data [MAX_FRAMESIZE+FF_INPUT_BUFFER_PADDING_SIZE]
  compressed frame data
 
PutBitContext  pb
  context for filling the frame_data buffer
 
uint32_t  decode_flags
  used compression features
 
int  len_prefix
  frame is prefixed with its length
 
int  dynamic_range_compression
  frame contains DRC data
 
uint8_t  bits_per_sample
  integer audio sample size for the unscaled IMDCT output (used to scale to [-1.0, 1.0])
 
uint16_t  samples_per_frame
  number of samples to output
 
uint16_t  log2_frame_size
 
int8_t  num_channels
  number of channels in the stream (same as AVCodecContext.num_channels)
 
int8_t  lfe_channel
  lfe channel index
 
uint8_t  max_num_subframes
 
uint8_t  subframe_len_bits
  number of bits used for the subframe length
 
uint8_t  max_subframe_len_bit
  flag indicating that the subframe is of maximum size when the first subframe length bit is 1
 
uint16_t  min_samples_per_subframe
 
GetBitContext  pgb
  bitstream reader context for the packet
 
int  next_packet_start
  start offset of the next WMA packet in the demuxer packet
 
uint8_t  packet_offset
  offset to the frame in the packet
 
uint8_t  packet_sequence_number
  current packet number
 
int  num_saved_bits
  saved number of bits
 
int  frame_offset
  frame offset in the bit reservoir
 
int  subframe_offset
  subframe offset in the bit reservoir
 
uint8_t  packet_loss
  set in case of bitstream error
 
uint8_t  packet_done
  set when a packet is fully decoded
 
uint32_t  frame_num
  current frame number (not used for decoding)
 
GetBitContext  gb
  bitstream reader context
 
int  buf_bit_size
  buffer size in bits
 
int16_t *  samples_16 [WMALL_MAX_CHANNELS]
  current samplebuffer pointer (16-bit)
 
int32_t *  samples_32 [WMALL_MAX_CHANNELS]
  current samplebuffer pointer (24-bit)
 
uint8_t  drc_gain
  gain for the DRC tool
 
int8_t  skip_frame
  skip output step
 
int8_t  parsed_all_subframes
  all subframes decoded?
 
int16_t  subframe_len
  current subframe length
 
int8_t  channels_for_cur_subframe
  number of channels that contain the subframe
 
int8_t  channel_indexes_for_cur_subframe [WMALL_MAX_CHANNELS]
 
WmallChannelCtx  channel [WMALL_MAX_CHANNELS]
  per channel data
 
uint8_t  do_arith_coding
 
uint8_t  do_ac_filter
 
uint8_t  do_inter_ch_decorr
 
uint8_t  do_mclms
 
uint8_t  do_lpc
 
int8_t  acfilter_order
 
int8_t  acfilter_scaling
 
int64_t  acfilter_coeffs [16]
 
int  acfilter_prevvalues [WMALL_MAX_CHANNELS][16]
 
int8_t  mclms_order
 
int8_t  mclms_scaling
 
int16_t  mclms_coeffs [WMALL_MAX_CHANNELS *WMALL_MAX_CHANNELS *32]
 
int16_t  mclms_coeffs_cur [WMALL_MAX_CHANNELS *WMALL_MAX_CHANNELS]
 
int16_t  mclms_prevvalues [WMALL_MAX_CHANNELS *2 *32]
 
int16_t  mclms_updates [WMALL_MAX_CHANNELS *2 *32]
 
int  mclms_recent
 
int  movave_scaling
 
int  quant_stepsize
 
struct {
   int   order
 
   int   scaling
 
   int   coefsend
 
   int   bitsend
 
   int16_t   coefs [MAX_ORDER]
 
   int16_t   lms_prevvalues [MAX_ORDER *2]
 
   int16_t   lms_updates [MAX_ORDER *2]
 
   int   recent
 
}  cdlms [WMALL_MAX_CHANNELS][9]
 
int  cdlms_ttl [WMALL_MAX_CHANNELS]
 
int  bV3RTM
 
int  is_channel_coded [WMALL_MAX_CHANNELS]
 
int  update_speed [WMALL_MAX_CHANNELS]
 
int  transient [WMALL_MAX_CHANNELS]
 
int  transient_pos [WMALL_MAX_CHANNELS]
 
int  seekable_tile
 
int  ave_sum [WMALL_MAX_CHANNELS]
 
int  channel_residues [WMALL_MAX_CHANNELS][WMALL_BLOCK_MAX_SIZE]
 
int  lpc_coefs [WMALL_MAX_CHANNELS][40]
 
int  lpc_order
 
int  lpc_scaling
 
int  lpc_intbits
 
int  channel_coeffs [WMALL_MAX_CHANNELS][WMALL_BLOCK_MAX_SIZE]
 

Detailed Description

main decoder context

Definition at line 66 of file wmalosslessdec.c.

Field Documentation

AVCodecContext* WmallDecodeCtx::avctx

Definition at line 68 of file wmalosslessdec.c.

Referenced by decode_cdlms(), decode_frame(), decode_init(), decode_subframe(), decode_subframe_length(), decode_tilehdr(), and save_bits().

AVFrame* WmallDecodeCtx::frame

Definition at line 69 of file wmalosslessdec.c.

Referenced by decode_close(), decode_frame(), decode_init(), decode_packet(), decode_subframe(), and flush().

uint8_t WmallDecodeCtx::frame_data[MAX_FRAMESIZE+FF_INPUT_BUFFER_PADDING_SIZE]

compressed frame data

Definition at line 70 of file wmalosslessdec.c.

Referenced by decode_init(), decode_packet(), flush(), and save_bits().

PutBitContext WmallDecodeCtx::pb

context for filling the frame_data buffer

Definition at line 71 of file wmalosslessdec.c.

Referenced by decode_init(), decode_packet(), flush(), and save_bits().

uint32_t WmallDecodeCtx::decode_flags

used compression features

Definition at line 74 of file wmalosslessdec.c.

Referenced by decode_init().

int WmallDecodeCtx::len_prefix

frame is prefixed with its length

Definition at line 75 of file wmalosslessdec.c.

Referenced by decode_frame(), decode_init(), and decode_packet().

int WmallDecodeCtx::dynamic_range_compression

frame contains DRC data

Definition at line 76 of file wmalosslessdec.c.

Referenced by decode_frame(), and decode_init().

uint8_t WmallDecodeCtx::bits_per_sample

integer audio sample size for the unscaled IMDCT output (used to scale to [-1.0, 1.0])

Definition at line 77 of file wmalosslessdec.c.

Referenced by decode_channel_residues(), decode_init(), decode_subframe(), lms_update(), and mclms_update().

uint16_t WmallDecodeCtx::samples_per_frame

number of samples to output

Definition at line 78 of file wmalosslessdec.c.

Referenced by decode_channel_residues(), decode_frame(), decode_init(), decode_subframe(), decode_subframe_length(), decode_tilehdr(), and reset_codec().

uint16_t WmallDecodeCtx::log2_frame_size

Definition at line 79 of file wmalosslessdec.c.

Referenced by decode_frame(), decode_init(), and decode_packet().

int8_t WmallDecodeCtx::num_channels

number of channels in the stream (same as AVCodecContext.num_channels)

Definition at line 80 of file wmalosslessdec.c.

Referenced by clear_codec_buffers(), decode_cdlms(), decode_frame(), decode_init(), decode_lpc(), decode_mclms(), decode_subframe(), decode_tilehdr(), mclms_predict(), mclms_update(), reset_codec(), revert_acfilter(), and revert_inter_ch_decorr().

int8_t WmallDecodeCtx::lfe_channel

lfe channel index

Definition at line 81 of file wmalosslessdec.c.

Referenced by decode_init().

uint8_t WmallDecodeCtx::max_num_subframes

Definition at line 82 of file wmalosslessdec.c.

Referenced by decode_init(), decode_subframe_length(), and decode_tilehdr().

uint8_t WmallDecodeCtx::subframe_len_bits

number of bits used for the subframe length

Definition at line 83 of file wmalosslessdec.c.

Referenced by decode_init().

uint8_t WmallDecodeCtx::max_subframe_len_bit

flag indicating that the subframe is of maximum size when the first subframe length bit is 1

Definition at line 84 of file wmalosslessdec.c.

Referenced by decode_init().

uint16_t WmallDecodeCtx::min_samples_per_subframe

Definition at line 85 of file wmalosslessdec.c.

Referenced by decode_init(), decode_subframe_length(), and decode_tilehdr().

GetBitContext WmallDecodeCtx::pgb

bitstream reader context for the packet

Definition at line 88 of file wmalosslessdec.c.

Referenced by decode_packet().

int WmallDecodeCtx::next_packet_start

start offset of the next WMA packet in the demuxer packet

Definition at line 89 of file wmalosslessdec.c.

Referenced by decode_packet(), and flush().

uint8_t WmallDecodeCtx::packet_offset

offset to the frame in the packet

Definition at line 90 of file wmalosslessdec.c.

Referenced by decode_packet().

uint8_t WmallDecodeCtx::packet_sequence_number

current packet number

Definition at line 91 of file wmalosslessdec.c.

Referenced by decode_packet().

int WmallDecodeCtx::num_saved_bits

saved number of bits

Definition at line 92 of file wmalosslessdec.c.

Referenced by decode_packet(), flush(), and save_bits().

int WmallDecodeCtx::frame_offset

frame offset in the bit reservoir

Definition at line 93 of file wmalosslessdec.c.

Referenced by decode_frame(), decode_packet(), flush(), and save_bits().

int WmallDecodeCtx::subframe_offset

subframe offset in the bit reservoir

Definition at line 94 of file wmalosslessdec.c.

Referenced by decode_subframe().

uint8_t WmallDecodeCtx::packet_loss

set in case of bitstream error

Definition at line 95 of file wmalosslessdec.c.

Referenced by decode_frame(), decode_init(), decode_packet(), flush(), and save_bits().

uint8_t WmallDecodeCtx::packet_done

set when a packet is fully decoded

Definition at line 96 of file wmalosslessdec.c.

Referenced by decode_packet(), and flush().

uint32_t WmallDecodeCtx::frame_num

current frame number (not used for decoding)

Definition at line 99 of file wmalosslessdec.c.

Referenced by decode_frame().

GetBitContext WmallDecodeCtx::gb

bitstream reader context

Definition at line 100 of file wmalosslessdec.c.

Referenced by decode_ac_filter(), decode_cdlms(), decode_channel_residues(), decode_frame(), decode_lpc(), decode_mclms(), decode_packet(), decode_subframe(), decode_subframe_length(), decode_tilehdr(), and save_bits().

int WmallDecodeCtx::buf_bit_size

buffer size in bits

Definition at line 101 of file wmalosslessdec.c.

Referenced by decode_packet(), and remaining_bits().

int16_t* WmallDecodeCtx::samples_16[WMALL_MAX_CHANNELS]

current samplebuffer pointer (16-bit)

Definition at line 102 of file wmalosslessdec.c.

Referenced by decode_frame(), and decode_subframe().

int32_t* WmallDecodeCtx::samples_32[WMALL_MAX_CHANNELS]

current samplebuffer pointer (24-bit)

Definition at line 103 of file wmalosslessdec.c.

Referenced by decode_frame(), and decode_subframe().

uint8_t WmallDecodeCtx::drc_gain

gain for the DRC tool

Definition at line 104 of file wmalosslessdec.c.

Referenced by decode_frame().

int8_t WmallDecodeCtx::skip_frame

skip output step

Definition at line 105 of file wmalosslessdec.c.

Referenced by decode_frame(), and decode_init().

int8_t WmallDecodeCtx::parsed_all_subframes

all subframes decoded?

Definition at line 106 of file wmalosslessdec.c.

Referenced by decode_frame(), and decode_subframe().

int16_t WmallDecodeCtx::subframe_len

current subframe length

Definition at line 109 of file wmalosslessdec.c.

int8_t WmallDecodeCtx::channels_for_cur_subframe

number of channels that contain the subframe

Definition at line 110 of file wmalosslessdec.c.

Referenced by decode_subframe().

int8_t WmallDecodeCtx::channel_indexes_for_cur_subframe[WMALL_MAX_CHANNELS]

Definition at line 111 of file wmalosslessdec.c.

Referenced by decode_subframe().

WmallChannelCtx WmallDecodeCtx::channel[WMALL_MAX_CHANNELS]

per channel data

Definition at line 113 of file wmalosslessdec.c.

Referenced by decode_channel_residues(), decode_frame(), decode_init(), decode_subframe(), decode_tilehdr(), and reset_codec().

uint8_t WmallDecodeCtx::do_arith_coding

Definition at line 117 of file wmalosslessdec.c.

Referenced by decode_subframe().

uint8_t WmallDecodeCtx::do_ac_filter

Definition at line 118 of file wmalosslessdec.c.

Referenced by decode_subframe().

uint8_t WmallDecodeCtx::do_inter_ch_decorr

Definition at line 119 of file wmalosslessdec.c.

Referenced by decode_channel_residues(), and decode_subframe().

uint8_t WmallDecodeCtx::do_mclms

Definition at line 120 of file wmalosslessdec.c.

Referenced by decode_subframe().

uint8_t WmallDecodeCtx::do_lpc

Definition at line 121 of file wmalosslessdec.c.

Referenced by decode_subframe().

int8_t WmallDecodeCtx::acfilter_order

Definition at line 123 of file wmalosslessdec.c.

Referenced by decode_ac_filter(), and revert_acfilter().

int8_t WmallDecodeCtx::acfilter_scaling

Definition at line 124 of file wmalosslessdec.c.

Referenced by decode_ac_filter(), and revert_acfilter().

int64_t WmallDecodeCtx::acfilter_coeffs[16]

Definition at line 125 of file wmalosslessdec.c.

Referenced by clear_codec_buffers(), decode_ac_filter(), and revert_acfilter().

int WmallDecodeCtx::acfilter_prevvalues[WMALL_MAX_CHANNELS][16]

Definition at line 126 of file wmalosslessdec.c.

Referenced by clear_codec_buffers(), and revert_acfilter().

int8_t WmallDecodeCtx::mclms_order

Definition at line 128 of file wmalosslessdec.c.

Referenced by decode_mclms(), mclms_predict(), mclms_update(), and reset_codec().

int8_t WmallDecodeCtx::mclms_scaling

Definition at line 129 of file wmalosslessdec.c.

Referenced by decode_mclms(), and mclms_predict().

int16_t WmallDecodeCtx::mclms_coeffs[WMALL_MAX_CHANNELS *WMALL_MAX_CHANNELS *32]

Definition at line 130 of file wmalosslessdec.c.

Referenced by clear_codec_buffers(), decode_mclms(), mclms_predict(), and mclms_update().

int16_t WmallDecodeCtx::mclms_coeffs_cur[WMALL_MAX_CHANNELS *WMALL_MAX_CHANNELS]

Definition at line 131 of file wmalosslessdec.c.

Referenced by clear_codec_buffers(), decode_mclms(), mclms_predict(), and mclms_update().

int16_t WmallDecodeCtx::mclms_prevvalues[WMALL_MAX_CHANNELS *2 *32]

Definition at line 132 of file wmalosslessdec.c.

Referenced by clear_codec_buffers(), mclms_predict(), and mclms_update().

int16_t WmallDecodeCtx::mclms_updates[WMALL_MAX_CHANNELS *2 *32]

Definition at line 133 of file wmalosslessdec.c.

Referenced by clear_codec_buffers(), and mclms_update().

int WmallDecodeCtx::mclms_recent

Definition at line 134 of file wmalosslessdec.c.

Referenced by mclms_predict(), mclms_update(), and reset_codec().

int WmallDecodeCtx::movave_scaling

Definition at line 136 of file wmalosslessdec.c.

Referenced by decode_channel_residues(), and decode_subframe().

int WmallDecodeCtx::quant_stepsize

Definition at line 137 of file wmalosslessdec.c.

Referenced by decode_subframe().

int WmallDecodeCtx::order

Definition at line 140 of file wmalosslessdec.c.

Referenced by decode_cdlms(), decode_subframe(), flush(), lms_predict(), lms_update(), reset_codec(), use_high_update_speed(), and use_normal_update_speed().

int WmallDecodeCtx::scaling

Definition at line 141 of file wmalosslessdec.c.

Referenced by decode_cdlms(), and revert_cdlms().

int WmallDecodeCtx::coefsend

Definition at line 142 of file wmalosslessdec.c.

Referenced by decode_cdlms().

int WmallDecodeCtx::bitsend

Definition at line 143 of file wmalosslessdec.c.

Referenced by decode_cdlms().

int16_t WmallDecodeCtx::coefs[MAX_ORDER]

Definition at line 144 of file wmalosslessdec.c.

Referenced by clear_codec_buffers(), decode_cdlms(), lms_predict(), and lms_update().

int16_t WmallDecodeCtx::lms_prevvalues[MAX_ORDER *2]

Definition at line 145 of file wmalosslessdec.c.

Referenced by clear_codec_buffers(), lms_predict(), and lms_update().

int16_t WmallDecodeCtx::lms_updates[MAX_ORDER *2]

Definition at line 146 of file wmalosslessdec.c.

Referenced by clear_codec_buffers(), lms_update(), use_high_update_speed(), and use_normal_update_speed().

int WmallDecodeCtx::recent

Definition at line 147 of file wmalosslessdec.c.

Referenced by lms_predict(), lms_update(), reset_codec(), use_high_update_speed(), and use_normal_update_speed().

struct { ... } WmallDecodeCtx::cdlms[WMALL_MAX_CHANNELS][9]

Referenced by clear_codec_buffers(), decode_cdlms(), decode_subframe(), flush(), lms_predict(), lms_update(), reset_codec(), revert_cdlms(), use_high_update_speed(), and use_normal_update_speed().

int WmallDecodeCtx::cdlms_ttl[WMALL_MAX_CHANNELS]

Definition at line 150 of file wmalosslessdec.c.

Referenced by clear_codec_buffers(), decode_cdlms(), reset_codec(), revert_cdlms(), use_high_update_speed(), and use_normal_update_speed().

int WmallDecodeCtx::bV3RTM

Definition at line 152 of file wmalosslessdec.c.

Referenced by decode_init(), decode_subframe(), use_high_update_speed(), and use_normal_update_speed().

int WmallDecodeCtx::is_channel_coded[WMALL_MAX_CHANNELS]

Definition at line 154 of file wmalosslessdec.c.

Referenced by decode_subframe(), mclms_predict(), and revert_inter_ch_decorr().

int WmallDecodeCtx::update_speed[WMALL_MAX_CHANNELS]

Definition at line 155 of file wmalosslessdec.c.

Referenced by lms_update(), use_high_update_speed(), and use_normal_update_speed().

int WmallDecodeCtx::transient[WMALL_MAX_CHANNELS]

Definition at line 157 of file wmalosslessdec.c.

Referenced by decode_channel_residues(), and reset_codec().

int WmallDecodeCtx::transient_pos[WMALL_MAX_CHANNELS]

Definition at line 158 of file wmalosslessdec.c.

Referenced by decode_channel_residues(), and reset_codec().

int WmallDecodeCtx::seekable_tile

Definition at line 159 of file wmalosslessdec.c.

Referenced by decode_channel_residues(), and decode_subframe().

int WmallDecodeCtx::ave_sum[WMALL_MAX_CHANNELS]

Definition at line 161 of file wmalosslessdec.c.

Referenced by clear_codec_buffers(), and decode_channel_residues().

int WmallDecodeCtx::channel_residues[WMALL_MAX_CHANNELS][WMALL_BLOCK_MAX_SIZE]

Definition at line 163 of file wmalosslessdec.c.

Referenced by decode_channel_residues(), decode_subframe(), mclms_predict(), mclms_update(), revert_acfilter(), revert_cdlms(), and revert_inter_ch_decorr().

int WmallDecodeCtx::lpc_coefs[WMALL_MAX_CHANNELS][40]

Definition at line 165 of file wmalosslessdec.c.

Referenced by clear_codec_buffers(), and decode_lpc().

int WmallDecodeCtx::lpc_order

Definition at line 166 of file wmalosslessdec.c.

Referenced by decode_lpc().

int WmallDecodeCtx::lpc_scaling

Definition at line 167 of file wmalosslessdec.c.

Referenced by decode_lpc().

int WmallDecodeCtx::lpc_intbits

Definition at line 168 of file wmalosslessdec.c.

Referenced by decode_lpc().

int WmallDecodeCtx::channel_coeffs[WMALL_MAX_CHANNELS][WMALL_BLOCK_MAX_SIZE]

Definition at line 170 of file wmalosslessdec.c.

Referenced by decode_subframe().

The documentation for this struct was generated from the following file:
Generated on Sun Mar 23 2014 23:50:43 for FFmpeg by   doxygen 1.8.2

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