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FFmpeg
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FFmpeg
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#include <ac3dec.h>
Data Fields | |
| AVClass * | class |
| class for AVOptions | |
| AVCodecContext * | avctx |
| parent context | |
| AVFrame | frame |
| AVFrame for decoded output. | |
| GetBitContext | gbc |
| bitstream reader | |
| int | preferred_stereo_downmix |
| float | ltrt_center_mix_level |
| float | ltrt_surround_mix_level |
| float | loro_center_mix_level |
| float | loro_surround_mix_level |
| float * | outptr [AC3_MAX_CHANNELS] |
| float * | xcfptr [AC3_MAX_CHANNELS] |
| float * | dlyptr [AC3_MAX_CHANNELS] |
Bit stream information | |
| int | frame_type |
| frame type (strmtyp) | |
| int | substreamid |
| substream identification | |
| int | frame_size |
| current frame size, in bytes | |
| int | bit_rate |
| stream bit rate, in bits-per-second | |
| int | sample_rate |
| sample frequency, in Hz | |
| int | num_blocks |
| number of audio blocks | |
| int | bitstream_mode |
| bitstream mode (bsmod) | |
| int | channel_mode |
| channel mode (acmod) | |
| int | channel_layout |
| channel layout | |
| int | lfe_on |
| lfe channel in use | |
| int | channel_map |
| custom channel map | |
| int | center_mix_level |
| Center mix level index. | |
| int | surround_mix_level |
| Surround mix level index. | |
| int | eac3 |
| indicates if current frame is E-AC-3 | |
Frame syntax parameters | |
| int | snr_offset_strategy |
| SNR offset strategy (snroffststr) | |
| int | block_switch_syntax |
| block switch syntax enabled (blkswe) | |
| int | dither_flag_syntax |
| dither flag syntax enabled (dithflage) | |
| int | bit_allocation_syntax |
| bit allocation model syntax enabled (bamode) | |
| int | fast_gain_syntax |
| fast gain codes enabled (frmfgaincode) | |
| int | dba_syntax |
| delta bit allocation syntax enabled (dbaflde) | |
| int | skip_syntax |
| skip field syntax enabled (skipflde) | |
Standard coupling | |
| int | cpl_in_use [AC3_MAX_BLOCKS] |
| coupling in use (cplinu) | |
| int | cpl_strategy_exists [AC3_MAX_BLOCKS] |
| coupling strategy exists (cplstre) | |
| int | channel_in_cpl [AC3_MAX_CHANNELS] |
| channel in coupling (chincpl) | |
| int | phase_flags_in_use |
| phase flags in use (phsflginu) | |
| int | phase_flags [AC3_MAX_CPL_BANDS] |
| phase flags (phsflg) | |
| int | num_cpl_bands |
| number of coupling bands (ncplbnd) | |
| uint8_t | cpl_band_sizes [AC3_MAX_CPL_BANDS] |
| number of coeffs in each coupling band | |
| int | firstchincpl |
| first channel in coupling | |
| int | first_cpl_coords [AC3_MAX_CHANNELS] |
| first coupling coordinates states (firstcplcos) | |
| int | cpl_coords [AC3_MAX_CHANNELS][AC3_MAX_CPL_BANDS] |
| coupling coordinates (cplco) | |
Spectral extension | |
| int | spx_in_use |
| spectral extension in use (spxinu) | |
| uint8_t | channel_uses_spx [AC3_MAX_CHANNELS] |
| channel uses spectral extension (chinspx) | |
| int8_t | spx_atten_code [AC3_MAX_CHANNELS] |
| spx attenuation code (spxattencod) | |
| int | spx_src_start_freq |
| spx start frequency bin | |
| int | spx_dst_end_freq |
| spx end frequency bin | |
| int | spx_dst_start_freq |
| spx starting frequency bin for copying (copystartmant) the copy region ends at the start of the spx region. | |
| int | num_spx_bands |
| number of spx bands (nspxbnds) | |
| uint8_t | spx_band_sizes [SPX_MAX_BANDS] |
| number of bins in each spx band | |
| uint8_t | first_spx_coords [AC3_MAX_CHANNELS] |
| first spx coordinates states (firstspxcos) | |
| float | spx_noise_blend [AC3_MAX_CHANNELS][SPX_MAX_BANDS] |
| spx noise blending factor (nblendfact) | |
| float | spx_signal_blend [AC3_MAX_CHANNELS][SPX_MAX_BANDS] |
| spx signal blending factor (sblendfact) | |
Adaptive hybrid transform | |
| int | channel_uses_aht [AC3_MAX_CHANNELS] |
| channel AHT in use (chahtinu) | |
| int | pre_mantissa [AC3_MAX_CHANNELS][AC3_MAX_COEFS][AC3_MAX_BLOCKS] |
| pre-IDCT mantissas | |
Channel | |
| int | fbw_channels |
| number of full-bandwidth channels | |
| int | channels |
| number of total channels | |
| int | lfe_ch |
| index of LFE channel | |
| float | downmix_coeffs [AC3_MAX_CHANNELS][2] |
| stereo downmix coefficients | |
| int | downmixed |
| indicates if coeffs are currently downmixed | |
| int | output_mode |
| output channel configuration | |
| int | out_channels |
| number of output channels | |
Dynamic range | |
| float | dynamic_range [2] |
| dynamic range | |
| float | drc_scale |
| percentage of dynamic range compression to be applied | |
Bandwidth | |
| int | start_freq [AC3_MAX_CHANNELS] |
| start frequency bin (strtmant) | |
| int | end_freq [AC3_MAX_CHANNELS] |
| end frequency bin (endmant) | |
Rematrixing | |
| int | num_rematrixing_bands |
| number of rematrixing bands (nrematbnd) | |
| int | rematrixing_flags [4] |
| rematrixing flags (rematflg) | |
Exponents | |
| int | num_exp_groups [AC3_MAX_CHANNELS] |
| Number of exponent groups (nexpgrp) | |
| int8_t | dexps [AC3_MAX_CHANNELS][AC3_MAX_COEFS] |
| decoded exponents | |
| int | exp_strategy [AC3_MAX_BLOCKS][AC3_MAX_CHANNELS] |
| exponent strategies (expstr) | |
Bit allocation | |
| AC3BitAllocParameters | bit_alloc_params |
| bit allocation parameters | |
| int | first_cpl_leak |
| first coupling leak state (firstcplleak) | |
| int | snr_offset [AC3_MAX_CHANNELS] |
| signal-to-noise ratio offsets (snroffst) | |
| int | fast_gain [AC3_MAX_CHANNELS] |
| fast gain values/SMR's (fgain) | |
| uint8_t | bap [AC3_MAX_CHANNELS][AC3_MAX_COEFS] |
| bit allocation pointers | |
| int16_t | psd [AC3_MAX_CHANNELS][AC3_MAX_COEFS] |
| scaled exponents | |
| int16_t | band_psd [AC3_MAX_CHANNELS][AC3_CRITICAL_BANDS] |
| interpolated exponents | |
| int16_t | mask [AC3_MAX_CHANNELS][AC3_CRITICAL_BANDS] |
| masking curve values | |
| int | dba_mode [AC3_MAX_CHANNELS] |
| delta bit allocation mode | |
| int | dba_nsegs [AC3_MAX_CHANNELS] |
| number of delta segments | |
| uint8_t | dba_offsets [AC3_MAX_CHANNELS][8] |
| delta segment offsets | |
| uint8_t | dba_lengths [AC3_MAX_CHANNELS][8] |
| delta segment lengths | |
| uint8_t | dba_values [AC3_MAX_CHANNELS][8] |
| delta values for each segment | |
Zero-mantissa dithering | |
| int | dither_flag [AC3_MAX_CHANNELS] |
| dither flags (dithflg) | |
| AVLFG | dith_state |
| for dither generation | |
IMDCT | |
| int | block_switch [AC3_MAX_CHANNELS] |
| block switch flags (blksw) | |
| FFTContext | imdct_512 |
| for 512 sample IMDCT | |
| FFTContext | imdct_256 |
| for 256 sample IMDCT | |
Optimization | |
| DSPContext | dsp |
| for optimization | |
| AC3DSPContext | ac3dsp |
| FmtConvertContext | fmt_conv |
| optimized conversion functions | |
Aligned arrays | |
| int | fixed_coeffs [AC3_MAX_CHANNELS][AC3_MAX_COEFS] |
| fixed-point transform coefficients | |
| float | transform_coeffs [AC3_MAX_CHANNELS][AC3_MAX_COEFS] |
| transform coefficients | |
| float | delay [AC3_MAX_CHANNELS][AC3_BLOCK_SIZE] |
| delay - added to the next block | |
| float | window [AC3_BLOCK_SIZE] |
| window coefficients | |
| float | tmp_output [AC3_BLOCK_SIZE] |
| temporary storage for output before windowing | |
| float | output [AC3_MAX_CHANNELS][AC3_BLOCK_SIZE] |
| output after imdct transform and windowing | |
| uint8_t | input_buffer [AC3_FRAME_BUFFER_SIZE+FF_INPUT_BUFFER_PADDING_SIZE] |
| temp buffer to prevent overread | |
| AVCodecContext* AC3DecodeContext::avctx |
parent context
Definition at line 70 of file ac3dec.h.
Referenced by ac3_decode_init(), decode_audio_block(), ff_eac3_decode_transform_coeffs_aht_ch(), ff_eac3_parse_header(), and parse_frame_header().
| AVFrame AC3DecodeContext::frame |
AVFrame for decoded output.
Definition at line 71 of file ac3dec.h.
Referenced by ac3_decode_frame(), and ac3_decode_init().
| GetBitContext AC3DecodeContext::gbc |
bitstream reader
Definition at line 72 of file ac3dec.h.
Referenced by ac3_decode_frame(), ac3_decode_transform_coeffs_ch(), ac3_parse_header(), decode_audio_block(), ff_eac3_decode_transform_coeffs_aht_ch(), ff_eac3_parse_header(), and parse_frame_header().
| int AC3DecodeContext::frame_type |
frame type (strmtyp)
Definition at line 76 of file ac3dec.h.
Referenced by ac3_decode_frame(), decode_audio_block(), ff_eac3_parse_header(), and parse_frame_header().
| int AC3DecodeContext::substreamid |
substream identification
Definition at line 77 of file ac3dec.h.
Referenced by ac3_decode_frame(), ff_eac3_parse_header(), and parse_frame_header().
| int AC3DecodeContext::frame_size |
current frame size, in bytes
Definition at line 78 of file ac3dec.h.
Referenced by ac3_decode_frame(), ff_eac3_parse_header(), and parse_frame_header().
| int AC3DecodeContext::bit_rate |
stream bit rate, in bits-per-second
Definition at line 79 of file ac3dec.h.
Referenced by ac3_decode_frame(), and parse_frame_header().
| int AC3DecodeContext::sample_rate |
sample frequency, in Hz
Definition at line 80 of file ac3dec.h.
Referenced by ac3_decode_frame(), and parse_frame_header().
| int AC3DecodeContext::num_blocks |
number of audio blocks
Definition at line 81 of file ac3dec.h.
Referenced by ac3_decode_frame(), ff_eac3_parse_header(), and parse_frame_header().
| int AC3DecodeContext::bitstream_mode |
bitstream mode (bsmod)
Definition at line 82 of file ac3dec.h.
Referenced by ac3_decode_frame(), ff_eac3_parse_header(), and parse_frame_header().
| int AC3DecodeContext::channel_mode |
channel mode (acmod)
Definition at line 83 of file ac3dec.h.
Referenced by ac3_decode_frame(), ac3_parse_header(), ac3_upmix_delay(), decode_audio_block(), ff_eac3_parse_header(), parse_frame_header(), and set_downmix_coeffs().
| int AC3DecodeContext::channel_layout |
channel layout
Definition at line 84 of file ac3dec.h.
Referenced by ac3_decode_frame(), and parse_frame_header().
| int AC3DecodeContext::lfe_on |
lfe channel in use
Definition at line 85 of file ac3dec.h.
Referenced by ac3_decode_frame(), ff_eac3_parse_header(), and parse_frame_header().
| int AC3DecodeContext::center_mix_level |
Center mix level index.
Definition at line 87 of file ac3dec.h.
Referenced by ff_eac3_parse_header(), and parse_frame_header().
| int AC3DecodeContext::surround_mix_level |
Surround mix level index.
Definition at line 88 of file ac3dec.h.
Referenced by ac3_decode_frame(), ff_eac3_parse_header(), parse_frame_header(), and set_downmix_coeffs().
| int AC3DecodeContext::eac3 |
indicates if current frame is E-AC-3
Definition at line 89 of file ac3dec.h.
Referenced by decode_audio_block(), and parse_frame_header().
| float AC3DecodeContext::ltrt_center_mix_level |
Definition at line 93 of file ac3dec.h.
Referenced by ac3_decode_frame().
| float AC3DecodeContext::ltrt_surround_mix_level |
Definition at line 94 of file ac3dec.h.
Referenced by ac3_decode_frame().
| float AC3DecodeContext::loro_center_mix_level |
Definition at line 95 of file ac3dec.h.
Referenced by ac3_decode_frame().
| float AC3DecodeContext::loro_surround_mix_level |
Definition at line 96 of file ac3dec.h.
Referenced by ac3_decode_frame().
| int AC3DecodeContext::snr_offset_strategy |
SNR offset strategy (snroffststr)
Definition at line 99 of file ac3dec.h.
Referenced by decode_audio_block(), ff_eac3_parse_header(), and parse_frame_header().
| int AC3DecodeContext::block_switch_syntax |
block switch syntax enabled (blkswe)
Definition at line 100 of file ac3dec.h.
Referenced by decode_audio_block(), ff_eac3_parse_header(), and parse_frame_header().
| int AC3DecodeContext::dither_flag_syntax |
dither flag syntax enabled (dithflage)
Definition at line 101 of file ac3dec.h.
Referenced by decode_audio_block(), ff_eac3_parse_header(), and parse_frame_header().
| int AC3DecodeContext::bit_allocation_syntax |
bit allocation model syntax enabled (bamode)
Definition at line 102 of file ac3dec.h.
Referenced by decode_audio_block(), ff_eac3_parse_header(), and parse_frame_header().
| int AC3DecodeContext::fast_gain_syntax |
fast gain codes enabled (frmfgaincode)
Definition at line 103 of file ac3dec.h.
Referenced by decode_audio_block(), ff_eac3_parse_header(), and parse_frame_header().
| int AC3DecodeContext::dba_syntax |
delta bit allocation syntax enabled (dbaflde)
Definition at line 104 of file ac3dec.h.
Referenced by decode_audio_block(), ff_eac3_parse_header(), and parse_frame_header().
| int AC3DecodeContext::skip_syntax |
skip field syntax enabled (skipflde)
Definition at line 105 of file ac3dec.h.
Referenced by decode_audio_block(), ff_eac3_parse_header(), and parse_frame_header().
| int AC3DecodeContext::cpl_in_use[AC3_MAX_BLOCKS] |
coupling in use (cplinu)
Definition at line 109 of file ac3dec.h.
Referenced by decode_audio_block(), and ff_eac3_parse_header().
| int AC3DecodeContext::cpl_strategy_exists[AC3_MAX_BLOCKS] |
coupling strategy exists (cplstre)
Definition at line 110 of file ac3dec.h.
Referenced by decode_audio_block(), and ff_eac3_parse_header().
| int AC3DecodeContext::channel_in_cpl[AC3_MAX_CHANNELS] |
channel in coupling (chincpl)
Definition at line 111 of file ac3dec.h.
Referenced by calc_transform_coeffs_cpl(), decode_audio_block(), decode_transform_coeffs(), parse_frame_header(), and remove_dithering().
| int AC3DecodeContext::phase_flags_in_use |
phase flags in use (phsflginu)
Definition at line 112 of file ac3dec.h.
Referenced by decode_audio_block().
| int AC3DecodeContext::phase_flags[AC3_MAX_CPL_BANDS] |
phase flags (phsflg)
Definition at line 113 of file ac3dec.h.
Referenced by calc_transform_coeffs_cpl(), and decode_audio_block().
| int AC3DecodeContext::num_cpl_bands |
number of coupling bands (ncplbnd)
Definition at line 114 of file ac3dec.h.
Referenced by calc_transform_coeffs_cpl(), and decode_audio_block().
| uint8_t AC3DecodeContext::cpl_band_sizes[AC3_MAX_CPL_BANDS] |
number of coeffs in each coupling band
Definition at line 115 of file ac3dec.h.
Referenced by calc_transform_coeffs_cpl(), and decode_audio_block().
| int AC3DecodeContext::firstchincpl |
| int AC3DecodeContext::first_cpl_coords[AC3_MAX_CHANNELS] |
first coupling coordinates states (firstcplcos)
Definition at line 117 of file ac3dec.h.
Referenced by decode_audio_block(), and ff_eac3_parse_header().
| int AC3DecodeContext::cpl_coords[AC3_MAX_CHANNELS][AC3_MAX_CPL_BANDS] |
coupling coordinates (cplco)
Definition at line 118 of file ac3dec.h.
Referenced by calc_transform_coeffs_cpl(), and decode_audio_block().
| int AC3DecodeContext::spx_in_use |
spectral extension in use (spxinu)
Definition at line 123 of file ac3dec.h.
Referenced by decode_audio_block().
| uint8_t AC3DecodeContext::channel_uses_spx[AC3_MAX_CHANNELS] |
channel uses spectral extension (chinspx)
Definition at line 124 of file ac3dec.h.
Referenced by decode_audio_block(), and ff_eac3_apply_spectral_extension().
| int8_t AC3DecodeContext::spx_atten_code[AC3_MAX_CHANNELS] |
spx attenuation code (spxattencod)
Definition at line 125 of file ac3dec.h.
Referenced by ff_eac3_apply_spectral_extension(), and ff_eac3_parse_header().
| int AC3DecodeContext::spx_src_start_freq |
spx start frequency bin
Definition at line 126 of file ac3dec.h.
Referenced by decode_audio_block(), and ff_eac3_apply_spectral_extension().
| int AC3DecodeContext::spx_dst_end_freq |
| int AC3DecodeContext::spx_dst_start_freq |
spx starting frequency bin for copying (copystartmant) the copy region ends at the start of the spx region.
Definition at line 128 of file ac3dec.h.
Referenced by decode_audio_block(), and ff_eac3_apply_spectral_extension().
| int AC3DecodeContext::num_spx_bands |
number of spx bands (nspxbnds)
Definition at line 130 of file ac3dec.h.
Referenced by decode_audio_block(), and ff_eac3_apply_spectral_extension().
| uint8_t AC3DecodeContext::spx_band_sizes[SPX_MAX_BANDS] |
number of bins in each spx band
Definition at line 131 of file ac3dec.h.
Referenced by decode_audio_block(), and ff_eac3_apply_spectral_extension().
| uint8_t AC3DecodeContext::first_spx_coords[AC3_MAX_CHANNELS] |
first spx coordinates states (firstspxcos)
Definition at line 132 of file ac3dec.h.
Referenced by decode_audio_block(), and ff_eac3_parse_header().
| float AC3DecodeContext::spx_noise_blend[AC3_MAX_CHANNELS][SPX_MAX_BANDS] |
spx noise blending factor (nblendfact)
Definition at line 133 of file ac3dec.h.
Referenced by decode_audio_block(), and ff_eac3_apply_spectral_extension().
| float AC3DecodeContext::spx_signal_blend[AC3_MAX_CHANNELS][SPX_MAX_BANDS] |
spx signal blending factor (sblendfact)
Definition at line 134 of file ac3dec.h.
Referenced by decode_audio_block(), and ff_eac3_apply_spectral_extension().
| int AC3DecodeContext::channel_uses_aht[AC3_MAX_CHANNELS] |
channel AHT in use (chahtinu)
Definition at line 138 of file ac3dec.h.
Referenced by decode_audio_block(), decode_transform_coeffs_ch(), ff_eac3_parse_header(), and parse_frame_header().
| int AC3DecodeContext::pre_mantissa[AC3_MAX_CHANNELS][AC3_MAX_COEFS][AC3_MAX_BLOCKS] |
pre-IDCT mantissas
Definition at line 139 of file ac3dec.h.
Referenced by decode_transform_coeffs_ch(), and ff_eac3_decode_transform_coeffs_aht_ch().
| int AC3DecodeContext::fbw_channels |
number of full-bandwidth channels
Definition at line 143 of file ac3dec.h.
Referenced by ac3_decode_frame(), calc_transform_coeffs_cpl(), decode_audio_block(), ff_eac3_apply_spectral_extension(), ff_eac3_parse_header(), parse_frame_header(), remove_dithering(), and set_downmix_coeffs().
| int AC3DecodeContext::channels |
number of total channels
Definition at line 144 of file ac3dec.h.
Referenced by ac3_decode_frame(), decode_audio_block(), decode_transform_coeffs(), ff_eac3_parse_header(), and parse_frame_header().
| int AC3DecodeContext::lfe_ch |
index of LFE channel
Definition at line 145 of file ac3dec.h.
Referenced by decode_audio_block(), ff_eac3_parse_header(), and parse_frame_header().
| float AC3DecodeContext::downmix_coeffs[AC3_MAX_CHANNELS][2] |
stereo downmix coefficients
Definition at line 146 of file ac3dec.h.
Referenced by decode_audio_block(), and set_downmix_coeffs().
| int AC3DecodeContext::downmixed |
indicates if coeffs are currently downmixed
Definition at line 147 of file ac3dec.h.
Referenced by ac3_decode_init(), and decode_audio_block().
| int AC3DecodeContext::output_mode |
output channel configuration
Definition at line 148 of file ac3dec.h.
Referenced by ac3_decode_frame(), decode_audio_block(), and set_downmix_coeffs().
| int AC3DecodeContext::out_channels |
number of output channels
Definition at line 149 of file ac3dec.h.
Referenced by ac3_decode_frame(), and decode_audio_block().
| float AC3DecodeContext::dynamic_range[2] |
| float AC3DecodeContext::drc_scale |
percentage of dynamic range compression to be applied
Definition at line 154 of file ac3dec.h.
Referenced by decode_audio_block().
| int AC3DecodeContext::start_freq[AC3_MAX_CHANNELS] |
start frequency bin (strtmant)
Definition at line 158 of file ac3dec.h.
Referenced by ac3_decode_transform_coeffs_ch(), calc_transform_coeffs_cpl(), decode_audio_block(), decode_transform_coeffs_ch(), ff_eac3_decode_transform_coeffs_aht_ch(), parse_frame_header(), and remove_dithering().
| int AC3DecodeContext::end_freq[AC3_MAX_CHANNELS] |
end frequency bin (endmant)
Definition at line 159 of file ac3dec.h.
Referenced by ac3_decode_transform_coeffs_ch(), decode_audio_block(), decode_transform_coeffs(), do_rematrixing(), and parse_frame_header().
| int AC3DecodeContext::num_rematrixing_bands |
number of rematrixing bands (nrematbnd)
Definition at line 163 of file ac3dec.h.
Referenced by decode_audio_block(), and do_rematrixing().
| int AC3DecodeContext::rematrixing_flags[4] |
rematrixing flags (rematflg)
Definition at line 164 of file ac3dec.h.
Referenced by decode_audio_block(), and do_rematrixing().
| int AC3DecodeContext::num_exp_groups[AC3_MAX_CHANNELS] |
Number of exponent groups (nexpgrp)
Definition at line 168 of file ac3dec.h.
Referenced by decode_audio_block(), and parse_frame_header().
| int8_t AC3DecodeContext::dexps[AC3_MAX_CHANNELS][AC3_MAX_COEFS] |
decoded exponents
Definition at line 169 of file ac3dec.h.
Referenced by ac3_decode_transform_coeffs_ch(), decode_audio_block(), and decode_transform_coeffs_ch().
| int AC3DecodeContext::exp_strategy[AC3_MAX_BLOCKS][AC3_MAX_CHANNELS] |
exponent strategies (expstr)
Definition at line 170 of file ac3dec.h.
Referenced by decode_audio_block(), and ff_eac3_parse_header().
| AC3BitAllocParameters AC3DecodeContext::bit_alloc_params |
bit allocation parameters
Definition at line 174 of file ac3dec.h.
Referenced by decode_audio_block(), ff_eac3_parse_header(), and parse_frame_header().
| int AC3DecodeContext::first_cpl_leak |
first coupling leak state (firstcplleak)
Definition at line 175 of file ac3dec.h.
Referenced by decode_audio_block(), ff_eac3_parse_header(), and parse_frame_header().
| int AC3DecodeContext::snr_offset[AC3_MAX_CHANNELS] |
signal-to-noise ratio offsets (snroffst)
Definition at line 176 of file ac3dec.h.
Referenced by decode_audio_block(), and ff_eac3_parse_header().
| int AC3DecodeContext::fast_gain[AC3_MAX_CHANNELS] |
fast gain values/SMR's (fgain)
Definition at line 177 of file ac3dec.h.
Referenced by decode_audio_block().
| uint8_t AC3DecodeContext::bap[AC3_MAX_CHANNELS][AC3_MAX_COEFS] |
bit allocation pointers
Definition at line 178 of file ac3dec.h.
Referenced by ac3_decode_transform_coeffs_ch(), decode_audio_block(), ff_eac3_decode_transform_coeffs_aht_ch(), and remove_dithering().
| int16_t AC3DecodeContext::psd[AC3_MAX_CHANNELS][AC3_MAX_COEFS] |
| int16_t AC3DecodeContext::band_psd[AC3_MAX_CHANNELS][AC3_CRITICAL_BANDS] |
| int16_t AC3DecodeContext::mask[AC3_MAX_CHANNELS][AC3_CRITICAL_BANDS] |
| int AC3DecodeContext::dba_mode[AC3_MAX_CHANNELS] |
delta bit allocation mode
Definition at line 182 of file ac3dec.h.
Referenced by decode_audio_block().
| int AC3DecodeContext::dba_nsegs[AC3_MAX_CHANNELS] |
number of delta segments
Definition at line 183 of file ac3dec.h.
Referenced by decode_audio_block().
| uint8_t AC3DecodeContext::dba_offsets[AC3_MAX_CHANNELS][8] |
| uint8_t AC3DecodeContext::dba_lengths[AC3_MAX_CHANNELS][8] |
| uint8_t AC3DecodeContext::dba_values[AC3_MAX_CHANNELS][8] |
delta values for each segment
Definition at line 186 of file ac3dec.h.
Referenced by decode_audio_block().
| int AC3DecodeContext::dither_flag[AC3_MAX_CHANNELS] |
dither flags (dithflg)
Definition at line 190 of file ac3dec.h.
Referenced by ac3_decode_transform_coeffs_ch(), decode_audio_block(), ff_eac3_parse_header(), and remove_dithering().
| AVLFG AC3DecodeContext::dith_state |
for dither generation
Definition at line 191 of file ac3dec.h.
Referenced by ac3_decode_init(), ac3_decode_transform_coeffs_ch(), ff_eac3_apply_spectral_extension(), and ff_eac3_decode_transform_coeffs_aht_ch().
| int AC3DecodeContext::block_switch[AC3_MAX_CHANNELS] |
block switch flags (blksw)
Definition at line 195 of file ac3dec.h.
Referenced by decode_audio_block(), do_imdct(), and ff_eac3_parse_header().
| FFTContext AC3DecodeContext::imdct_512 |
for 512 sample IMDCT
Definition at line 196 of file ac3dec.h.
Referenced by ac3_decode_end(), ac3_decode_init(), and do_imdct().
| FFTContext AC3DecodeContext::imdct_256 |
for 256 sample IMDCT
Definition at line 197 of file ac3dec.h.
Referenced by ac3_decode_end(), ac3_decode_init(), and do_imdct().
| DSPContext AC3DecodeContext::dsp |
for optimization
Definition at line 201 of file ac3dec.h.
Referenced by ac3_decode_frame(), ac3_decode_init(), and do_imdct().
| AC3DSPContext AC3DecodeContext::ac3dsp |
Definition at line 202 of file ac3dec.h.
Referenced by ac3_decode_init(), and decode_audio_block().
| FmtConvertContext AC3DecodeContext::fmt_conv |
optimized conversion functions
Definition at line 203 of file ac3dec.h.
Referenced by ac3_decode_init(), and decode_audio_block().
| float* AC3DecodeContext::outptr[AC3_MAX_CHANNELS] |
Definition at line 206 of file ac3dec.h.
Referenced by ac3_decode_frame(), decode_audio_block(), and do_imdct().
| float* AC3DecodeContext::xcfptr[AC3_MAX_CHANNELS] |
Definition at line 207 of file ac3dec.h.
Referenced by ac3_decode_init(), and decode_audio_block().
| float* AC3DecodeContext::dlyptr[AC3_MAX_CHANNELS] |
Definition at line 208 of file ac3dec.h.
Referenced by ac3_decode_init(), and decode_audio_block().
| int AC3DecodeContext::fixed_coeffs[AC3_MAX_CHANNELS][AC3_MAX_COEFS] |
fixed-point transform coefficients
Definition at line 211 of file ac3dec.h.
Referenced by ac3_decode_transform_coeffs_ch(), calc_transform_coeffs_cpl(), decode_audio_block(), decode_transform_coeffs(), decode_transform_coeffs_ch(), do_rematrixing(), and remove_dithering().
| float AC3DecodeContext::transform_coeffs[AC3_MAX_CHANNELS][AC3_MAX_COEFS] |
transform coefficients
Definition at line 212 of file ac3dec.h.
Referenced by ac3_decode_init(), decode_audio_block(), do_imdct(), and ff_eac3_apply_spectral_extension().
| float AC3DecodeContext::delay[AC3_MAX_CHANNELS][AC3_BLOCK_SIZE] |
delay - added to the next block
Definition at line 213 of file ac3dec.h.
Referenced by ac3_decode_init(), ac3_upmix_delay(), and do_imdct().
| float AC3DecodeContext::window[AC3_BLOCK_SIZE] |
window coefficients
Definition at line 214 of file ac3dec.h.
Referenced by ac3_decode_init(), and do_imdct().
| float AC3DecodeContext::tmp_output[AC3_BLOCK_SIZE] |
temporary storage for output before windowing
Definition at line 215 of file ac3dec.h.
Referenced by do_imdct().
| float AC3DecodeContext::output[AC3_MAX_CHANNELS][AC3_BLOCK_SIZE] |
output after imdct transform and windowing
Definition at line 216 of file ac3dec.h.
Referenced by ac3_decode_frame().
| uint8_t AC3DecodeContext::input_buffer[AC3_FRAME_BUFFER_SIZE+FF_INPUT_BUFFER_PADDING_SIZE] |
temp buffer to prevent overread
Definition at line 217 of file ac3dec.h.
Referenced by ac3_decode_frame().
1.8.2
