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FFmpeg
4.0
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#include <libavcodec/dca_lbr.h>
Data Fields | |
| AVCodecContext * | avctx |
| GetBitContext | gb |
| int | sample_rate |
| Sample rate of LBR audio. More... | |
| int | ch_mask |
| LBR speaker mask. More... | |
| int | flags |
| Flags for LBR decoder initialization. More... | |
| int | bit_rate_orig |
| Original bit rate. More... | |
| int | bit_rate_scaled |
| Scaled bit rate. More... | |
| int | nchannels |
| Number of fullband channels to decode. More... | |
| int | nchannels_total |
| Total number of fullband channels. More... | |
| int | freq_range |
| Frequency range of LBR audio. More... | |
| int | band_limit |
| Band limit factor. More... | |
| int | limited_rate |
| Band limited sample rate. More... | |
| int | limited_range |
| Band limited frequency range. More... | |
| int | res_profile |
| Resolution profile. More... | |
| int | nsubbands |
| Number of encoded subbands. More... | |
| int | g3_avg_only_start_sb |
| Subband index where grid 3 scale factors end. More... | |
| int | min_mono_subband |
| Subband index where mono encoding starts. More... | |
| int | max_mono_subband |
| Subband index where mono encoding ends. More... | |
| int | framenum |
| Lower 5 bits of current frame number. More... | |
| int | lbr_rand |
| Seed for subband randomization. More... | |
| int | warned |
| Flags for warning suppression. More... | |
| uint8_t | quant_levels [DCA_LBR_CHANNELS/2][DCA_LBR_SUBBANDS] |
| Quantization levels. More... | |
| uint8_t | sb_indices [DCA_LBR_SUBBANDS] |
| Subband reordering indices. More... | |
| uint8_t | sec_ch_sbms [DCA_LBR_CHANNELS/2][DCA_LBR_SUBBANDS] |
| Right channel inversion or mid/side decoding flags. More... | |
| uint8_t | sec_ch_lrms [DCA_LBR_CHANNELS/2][DCA_LBR_SUBBANDS] |
| Flags indicating if left/right channel are swapped. More... | |
| uint32_t | ch_pres [DCA_LBR_CHANNELS] |
| Subband allocation flags. More... | |
| uint8_t | grid_1_scf [DCA_LBR_CHANNELS][12][8] |
| Grid 1 scale factors. More... | |
| uint8_t | grid_2_scf [DCA_LBR_CHANNELS][3][64] |
| Grid 2 scale factors. More... | |
| int8_t | grid_3_avg [DCA_LBR_CHANNELS][DCA_LBR_SUBBANDS - 4] |
| Grid 3 average values. More... | |
| int8_t | grid_3_scf [DCA_LBR_CHANNELS][DCA_LBR_SUBBANDS - 4][8] |
| Grid 3 scale factors. More... | |
| uint32_t | grid_3_pres [DCA_LBR_CHANNELS] |
| Grid 3 scale factors presence flags. More... | |
| uint8_t | high_res_scf [DCA_LBR_CHANNELS][DCA_LBR_SUBBANDS][8] |
| High-frequency resolution scale factors. More... | |
| uint8_t | part_stereo [DCA_LBR_CHANNELS][DCA_LBR_SUBBANDS/4][5] |
| Partial stereo coefficients. More... | |
| uint8_t | part_stereo_pres |
| Partial stereo coefficients presence flags. More... | |
| float | lpc_coeff [2][DCA_LBR_CHANNELS][3][2][8] |
| Predictor coefficients. More... | |
| float | sb_scf [DCA_LBR_SUBBANDS] |
| Subband randomization scale factors. More... | |
| float * | time_samples [DCA_LBR_CHANNELS][DCA_LBR_SUBBANDS] |
| Time samples. More... | |
| float * | ts_buffer |
| Time sample buffer base. More... | |
| unsigned int | ts_size |
| Time sample buffer size. More... | |
| float | history [DCA_LBR_CHANNELS][DCA_LBR_SUBBANDS *4] |
| IMDCT history. More... | |
| float | window [DCA_LBR_SUBBANDS *4] |
| Long window for IMDCT. More... | |
| float | lfe_data [64] |
| Decimated LFE samples. More... | |
| float | lfe_history [5][2] |
| LFE IIR filter history. More... | |
| float | lfe_scale |
| Scale factor of LFE samples before IIR filter. More... | |
| uint8_t | tonal_scf [6] |
| Tonal scale factors. More... | |
| uint16_t | tonal_bounds [5][32][2] |
| Per-group per-subframe start/end positions of tones. More... | |
| DCALbrTone | tones [DCA_LBR_TONES] |
| Circular buffer of tones. More... | |
| int | ntones |
| Circular buffer head position. More... | |
| FFTContext | imdct |
| AVFloatDSPContext * | fdsp |
| DCADSPContext * | dcadsp |
| AVCodecContext* DCALbrDecoder::avctx |
Definition at line 59 of file dca_lbr.h.
Referenced by dcadec_init(), ff_dca_lbr_filter_frame(), ff_dca_lbr_parse(), parse_decoder_init(), parse_grid_1_chunk(), parse_lfe_16(), parse_lfe_24(), parse_lfe_chunk(), parse_scale_factors(), parse_tonal(), and parse_tonal_chunk().
| GetBitContext DCALbrDecoder::gb |
Definition at line 60 of file dca_lbr.h.
Referenced by parse_ch(), parse_grid_1_chunk(), parse_grid_1_sec_ch(), parse_grid_2(), parse_grid_3(), parse_high_res_grid(), parse_lfe_16(), parse_lfe_24(), parse_lfe_chunk(), parse_lpc(), parse_scale_factors(), parse_tonal(), parse_tonal_chunk(), parse_tonal_group(), parse_ts(), parse_ts1_chunk(), and parse_ts2_chunk().
| int DCALbrDecoder::sample_rate |
Sample rate of LBR audio.
Definition at line 62 of file dca_lbr.h.
Referenced by ff_dca_lbr_close(), ff_dca_lbr_filter_frame(), ff_dca_lbr_flush(), ff_dca_lbr_parse(), and parse_decoder_init().
| int DCALbrDecoder::ch_mask |
LBR speaker mask.
Definition at line 63 of file dca_lbr.h.
Referenced by ff_dca_lbr_filter_frame(), and parse_decoder_init().
| int DCALbrDecoder::flags |
Flags for LBR decoder initialization.
Definition at line 64 of file dca_lbr.h.
Referenced by ff_dca_lbr_filter_frame(), parse_decoder_init(), and parse_lfe_chunk().
| int DCALbrDecoder::bit_rate_orig |
| int DCALbrDecoder::bit_rate_scaled |
Scaled bit rate.
Definition at line 66 of file dca_lbr.h.
Referenced by ff_dca_lbr_filter_frame(), init_sample_rate(), and parse_decoder_init().
| int DCALbrDecoder::nchannels |
Number of fullband channels to decode.
Definition at line 68 of file dca_lbr.h.
Referenced by alloc_sample_buffer(), ff_dca_lbr_filter_frame(), ff_dca_lbr_flush(), ff_dca_lbr_parse(), parse_decoder_init(), and parse_tonal().
| int DCALbrDecoder::nchannels_total |
Total number of fullband channels.
Definition at line 69 of file dca_lbr.h.
Referenced by init_sample_rate(), parse_decoder_init(), and parse_tonal().
| int DCALbrDecoder::freq_range |
Frequency range of LBR audio.
Definition at line 70 of file dca_lbr.h.
Referenced by ff_dca_lbr_filter_frame(), init_sample_rate(), parse_decoder_init(), and transform_channel().
| int DCALbrDecoder::band_limit |
| int DCALbrDecoder::limited_rate |
Band limited sample rate.
Definition at line 72 of file dca_lbr.h.
Referenced by parse_decoder_init(), and parse_high_res_grid().
| int DCALbrDecoder::limited_range |
Band limited frequency range.
Definition at line 73 of file dca_lbr.h.
Referenced by init_sample_rate(), parse_decoder_init(), parse_tonal(), and parse_ts().
| int DCALbrDecoder::res_profile |
| int DCALbrDecoder::nsubbands |
Number of encoded subbands.
Definition at line 75 of file dca_lbr.h.
Referenced by alloc_sample_buffer(), decode_grid(), ff_dca_lbr_flush(), ff_dca_lbr_parse(), filter_ts(), init_sample_rate(), parse_decoder_init(), parse_grid_1_chunk(), parse_grid_1_sec_ch(), parse_grid_2(), parse_high_res_grid(), parse_tonal(), parse_ts(), parse_ts2_chunk(), random_ts(), and transform_channel().
| int DCALbrDecoder::g3_avg_only_start_sb |
Subband index where grid 3 scale factors end.
Definition at line 76 of file dca_lbr.h.
Referenced by parse_decoder_init(), and parse_ts().
| int DCALbrDecoder::min_mono_subband |
Subband index where mono encoding starts.
Definition at line 77 of file dca_lbr.h.
Referenced by decode_part_stereo(), filter_ts(), parse_decoder_init(), parse_grid_1_chunk(), parse_grid_1_sec_ch(), parse_grid_2(), parse_grid_3(), parse_ts(), and parse_ts2_chunk().
| int DCALbrDecoder::max_mono_subband |
Subband index where mono encoding ends.
Definition at line 78 of file dca_lbr.h.
Referenced by parse_decoder_init(), parse_ts(), and parse_ts2_chunk().
| int DCALbrDecoder::framenum |
Lower 5 bits of current frame number.
Definition at line 80 of file dca_lbr.h.
Referenced by base_func_synth(), ff_dca_lbr_flush(), ff_dca_lbr_parse(), parse_lpc(), parse_tonal(), and synth_lpc().
| int DCALbrDecoder::lbr_rand |
Seed for subband randomization.
Definition at line 81 of file dca_lbr.h.
Referenced by ff_dca_lbr_init(), and lbr_rand().
| int DCALbrDecoder::warned |
Flags for warning suppression.
Definition at line 82 of file dca_lbr.h.
Referenced by parse_decoder_init().
| uint8_t DCALbrDecoder::quant_levels[DCA_LBR_CHANNELS/2][DCA_LBR_SUBBANDS] |
Quantization levels.
Definition at line 84 of file dca_lbr.h.
Referenced by ff_dca_lbr_parse(), parse_high_res_grid(), and parse_ts().
| uint8_t DCALbrDecoder::sb_indices[DCA_LBR_SUBBANDS] |
Subband reordering indices.
Definition at line 85 of file dca_lbr.h.
Referenced by ff_dca_lbr_parse(), and parse_ts().
| uint8_t DCALbrDecoder::sec_ch_sbms[DCA_LBR_CHANNELS/2][DCA_LBR_SUBBANDS] |
Right channel inversion or mid/side decoding flags.
Definition at line 87 of file dca_lbr.h.
Referenced by ff_dca_lbr_parse(), filter_ts(), and parse_ts().
| uint8_t DCALbrDecoder::sec_ch_lrms[DCA_LBR_CHANNELS/2][DCA_LBR_SUBBANDS] |
Flags indicating if left/right channel are swapped.
Definition at line 88 of file dca_lbr.h.
Referenced by ff_dca_lbr_parse(), filter_ts(), and parse_ts().
| uint32_t DCALbrDecoder::ch_pres[DCA_LBR_CHANNELS] |
Subband allocation flags.
Definition at line 89 of file dca_lbr.h.
Referenced by decode_part_stereo(), ff_dca_lbr_parse(), filter_ts(), parse_ch(), random_ts(), and synth_lpc().
| uint8_t DCALbrDecoder::grid_1_scf[DCA_LBR_CHANNELS][12][8] |
Grid 1 scale factors.
Definition at line 91 of file dca_lbr.h.
Referenced by decode_grid(), ff_dca_lbr_parse(), parse_grid_1_chunk(), parse_grid_1_sec_ch(), and parse_high_res_grid().
| uint8_t DCALbrDecoder::grid_2_scf[DCA_LBR_CHANNELS][3][64] |
Grid 2 scale factors.
Definition at line 92 of file dca_lbr.h.
Referenced by ff_dca_lbr_parse(), filter_ts(), and parse_grid_2().
| int8_t DCALbrDecoder::grid_3_avg[DCA_LBR_CHANNELS][DCA_LBR_SUBBANDS - 4] |
Grid 3 average values.
Definition at line 94 of file dca_lbr.h.
Referenced by decode_grid(), ff_dca_lbr_parse(), parse_grid_1_chunk(), and parse_grid_1_sec_ch().
| int8_t DCALbrDecoder::grid_3_scf[DCA_LBR_CHANNELS][DCA_LBR_SUBBANDS - 4][8] |
Grid 3 scale factors.
Definition at line 95 of file dca_lbr.h.
Referenced by decode_grid(), ff_dca_lbr_parse(), and parse_grid_3().
| uint32_t DCALbrDecoder::grid_3_pres[DCA_LBR_CHANNELS] |
Grid 3 scale factors presence flags.
Definition at line 96 of file dca_lbr.h.
Referenced by ff_dca_lbr_parse(), and parse_grid_3().
| uint8_t DCALbrDecoder::high_res_scf[DCA_LBR_CHANNELS][DCA_LBR_SUBBANDS][8] |
High-frequency resolution scale factors.
Definition at line 98 of file dca_lbr.h.
Referenced by decode_grid(), and filter_ts().
| uint8_t DCALbrDecoder::part_stereo[DCA_LBR_CHANNELS][DCA_LBR_SUBBANDS/4][5] |
Partial stereo coefficients.
Definition at line 100 of file dca_lbr.h.
Referenced by decode_part_stereo(), ff_dca_lbr_flush(), ff_dca_lbr_parse(), and parse_grid_1_chunk().
| uint8_t DCALbrDecoder::part_stereo_pres |
Partial stereo coefficients presence flags.
Definition at line 101 of file dca_lbr.h.
Referenced by ff_dca_lbr_filter_frame(), ff_dca_lbr_parse(), filter_ts(), and parse_grid_1_chunk().
| float DCALbrDecoder::lpc_coeff[2][DCA_LBR_CHANNELS][3][2][8] |
Predictor coefficients.
Definition at line 103 of file dca_lbr.h.
Referenced by ff_dca_lbr_flush(), ff_dca_lbr_parse(), parse_lpc(), and synth_lpc().
| float DCALbrDecoder::sb_scf[DCA_LBR_SUBBANDS] |
Subband randomization scale factors.
Definition at line 105 of file dca_lbr.h.
Referenced by init_sample_rate(), and lbr_rand().
| float* DCALbrDecoder::time_samples[DCA_LBR_CHANNELS][DCA_LBR_SUBBANDS] |
Time samples.
Definition at line 107 of file dca_lbr.h.
Referenced by alloc_sample_buffer(), decode_part_stereo(), ff_dca_lbr_flush(), filter_ts(), parse_ch(), random_ts(), synth_lpc(), and transform_channel().
| float* DCALbrDecoder::ts_buffer |
Time sample buffer base.
Definition at line 109 of file dca_lbr.h.
Referenced by alloc_sample_buffer(), and ff_dca_lbr_close().
| unsigned int DCALbrDecoder::ts_size |
Time sample buffer size.
Definition at line 110 of file dca_lbr.h.
Referenced by alloc_sample_buffer(), and ff_dca_lbr_close().
| float DCALbrDecoder::history[DCA_LBR_CHANNELS][DCA_LBR_SUBBANDS *4] |
IMDCT history.
Definition at line 112 of file dca_lbr.h.
Referenced by ff_dca_lbr_flush(), and transform_channel().
| float DCALbrDecoder::window[DCA_LBR_SUBBANDS *4] |
Long window for IMDCT.
Definition at line 113 of file dca_lbr.h.
Referenced by init_sample_rate(), and transform_channel().
| float DCALbrDecoder::lfe_data[64] |
Decimated LFE samples.
Definition at line 115 of file dca_lbr.h.
Referenced by ff_dca_lbr_filter_frame(), ff_dca_lbr_parse(), parse_lfe_16(), and parse_lfe_24().
| float DCALbrDecoder::lfe_history[5][2] |
LFE IIR filter history.
Definition at line 116 of file dca_lbr.h.
Referenced by ff_dca_lbr_filter_frame(), and ff_dca_lbr_flush().
| float DCALbrDecoder::lfe_scale |
Scale factor of LFE samples before IIR filter.
Definition at line 117 of file dca_lbr.h.
Referenced by init_sample_rate(), parse_lfe_16(), and parse_lfe_24().
| uint8_t DCALbrDecoder::tonal_scf[6] |
Tonal scale factors.
Definition at line 119 of file dca_lbr.h.
Referenced by ff_dca_lbr_parse(), parse_tonal(), and parse_tonal_chunk().
| uint16_t DCALbrDecoder::tonal_bounds[5][32][2] |
Per-group per-subframe start/end positions of tones.
Definition at line 120 of file dca_lbr.h.
Referenced by ff_dca_lbr_flush(), ff_dca_lbr_parse(), parse_tonal(), and synth_tones().
| DCALbrTone DCALbrDecoder::tones[DCA_LBR_TONES] |
Circular buffer of tones.
Definition at line 121 of file dca_lbr.h.
Referenced by parse_tonal(), and synth_tones().
| int DCALbrDecoder::ntones |
Circular buffer head position.
Definition at line 122 of file dca_lbr.h.
Referenced by ff_dca_lbr_flush(), ff_dca_lbr_parse(), and parse_tonal().
| FFTContext DCALbrDecoder::imdct |
Definition at line 124 of file dca_lbr.h.
Referenced by ff_dca_lbr_close(), init_sample_rate(), and transform_channel().
| AVFloatDSPContext* DCALbrDecoder::fdsp |
Definition at line 125 of file dca_lbr.h.
Referenced by ff_dca_lbr_close(), ff_dca_lbr_init(), and transform_channel().
| DCADSPContext* DCALbrDecoder::dcadsp |
Definition at line 126 of file dca_lbr.h.
Referenced by dcadec_init(), ff_dca_lbr_filter_frame(), and transform_channel().
1.8.13