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FFmpeg
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Data Fields | |
| AMRWBFrame | frame |
| AMRWB parameters decoded from bitstream. More... | |
| enum Mode | fr_cur_mode |
| mode index of current frame More... | |
| uint8_t | fr_quality |
| frame quality index (FQI) More... | |
| float | isf_cur [LP_ORDER] |
| working ISF vector from current frame More... | |
| float | isf_q_past [LP_ORDER] |
| quantized ISF vector of the previous frame More... | |
| float | isf_past_final [LP_ORDER] |
| final processed ISF vector of the previous frame More... | |
| double | isp [4][LP_ORDER] |
| ISP vectors from current frame. More... | |
| double | isp_sub4_past [LP_ORDER] |
| ISP vector for the 4th subframe of the previous frame. More... | |
| float | lp_coef [4][LP_ORDER] |
| Linear Prediction Coefficients from ISP vector. More... | |
| uint8_t | base_pitch_lag |
| integer part of pitch lag for the next relative subframe More... | |
| uint8_t | pitch_lag_int |
| integer part of pitch lag of the previous subframe More... | |
| float | excitation_buf [AMRWB_P_DELAY_MAX+LP_ORDER+2+AMRWB_SFR_SIZE] |
| current excitation and all necessary excitation history More... | |
| float * | excitation |
| points to current excitation in excitation_buf[] More... | |
| float | pitch_vector [AMRWB_SFR_SIZE] |
| adaptive codebook (pitch) vector for current subframe More... | |
| float | fixed_vector [AMRWB_SFR_SIZE] |
| algebraic codebook (fixed) vector for current subframe More... | |
| float | prediction_error [4] |
| quantified prediction errors {20log10(^gamma_gc)} for previous four subframes More... | |
| float | pitch_gain [6] |
| quantified pitch gains for the current and previous five subframes More... | |
| float | fixed_gain [2] |
| quantified fixed gains for the current and previous subframes More... | |
| float | tilt_coef |
| {beta_1} related to the voicing of the previous subframe More... | |
| float | prev_sparse_fixed_gain |
| previous fixed gain; used by anti-sparseness to determine "onset" More... | |
| uint8_t | prev_ir_filter_nr |
| previous impulse response filter "impNr": 0 - strong, 1 - medium, 2 - none More... | |
| float | prev_tr_gain |
| previous initial gain used by noise enhancer for threshold More... | |
| float | samples_az [LP_ORDER+AMRWB_SFR_SIZE] |
| low-band samples and memory from synthesis at 12.8kHz More... | |
| float | samples_up [UPS_MEM_SIZE+AMRWB_SFR_SIZE] |
| low-band samples and memory processed for upsampling More... | |
| float | samples_hb [LP_ORDER_16k+AMRWB_SFR_SIZE_16k] |
| high-band samples and memory from synthesis at 16kHz More... | |
| float | hpf_31_mem [2] |
| float | hpf_400_mem [2] |
| previous values in the high pass filters More... | |
| float | demph_mem [1] |
| previous value in the de-emphasis filter More... | |
| float | bpf_6_7_mem [HB_FIR_SIZE] |
| previous values in the high-band band pass filter More... | |
| float | lpf_7_mem [HB_FIR_SIZE] |
| previous values in the high-band low pass filter More... | |
| AVLFG | prng |
| random number generator for white noise excitation More... | |
| uint8_t | first_frame |
| flag active during decoding of the first frame More... | |
| ACELPFContext | acelpf_ctx |
| context for filters for ACELP-based codecs More... | |
| ACELPVContext | acelpv_ctx |
| context for vector operations for ACELP-based codecs More... | |
| CELPFContext | celpf_ctx |
| context for filters for CELP-based codecs More... | |
| CELPMContext | celpm_ctx |
| context for fixed point math operations More... | |
| AVClass * | av_class |
| void * | state |
| int | mode |
| int | last_bitrate |
| int | allow_dtx |
Detailed Description
Definition at line 47 of file amrwbdec.c.
Field Documentation
| ACELPFContext AMRWBContext::acelpf_ctx |
context for filters for ACELP-based codecs
Definition at line 89 of file amrwbdec.c.
Referenced by amrwb_decode_frame(), amrwb_decode_init(), and decode_pitch_vector().
| ACELPVContext AMRWBContext::acelpv_ctx |
context for vector operations for ACELP-based codecs
Definition at line 90 of file amrwbdec.c.
Referenced by amrwb_decode_init(), hb_synthesis(), and synthesis().
| int AMRWBContext::allow_dtx |
Definition at line 40 of file libvo-amrwbenc.c.
Referenced by amr_wb_encode_frame().
| AVClass* AMRWBContext::av_class |
Definition at line 36 of file libvo-amrwbenc.c.
| uint8_t AMRWBContext::base_pitch_lag |
integer part of pitch lag for the next relative subframe
Definition at line 59 of file amrwbdec.c.
Referenced by decode_pitch_vector().
| float AMRWBContext::bpf_6_7_mem[HB_FIR_SIZE] |
previous values in the high-band band pass filter
Definition at line 84 of file amrwbdec.c.
Referenced by amrwb_decode_frame().
| CELPFContext AMRWBContext::celpf_ctx |
context for filters for CELP-based codecs
Definition at line 91 of file amrwbdec.c.
Referenced by amrwb_decode_init(), hb_synthesis(), and synthesis().
| CELPMContext AMRWBContext::celpm_ctx |
context for fixed point math operations
Definition at line 92 of file amrwbdec.c.
Referenced by amrwb_decode_frame(), amrwb_decode_init(), find_hb_gain(), scaled_hb_excitation(), and synthesis().
| float AMRWBContext::demph_mem[1] |
previous value in the de-emphasis filter
Definition at line 83 of file amrwbdec.c.
Referenced by amrwb_decode_frame().
| float* AMRWBContext::excitation |
points to current excitation in excitation_buf[]
Definition at line 63 of file amrwbdec.c.
Referenced by amrwb_decode_frame(), amrwb_decode_init(), and decode_pitch_vector().
| float AMRWBContext::excitation_buf[AMRWB_P_DELAY_MAX+LP_ORDER+2+AMRWB_SFR_SIZE] |
current excitation and all necessary excitation history
Definition at line 62 of file amrwbdec.c.
Referenced by amrwb_decode_init(), and update_sub_state().
| uint8_t AMRWBContext::first_frame |
flag active during decoding of the first frame
Definition at line 88 of file amrwbdec.c.
Referenced by amrwb_decode_frame(), and amrwb_decode_init().
| float AMRWBContext::fixed_gain[2] |
quantified fixed gains for the current and previous subframes
Definition at line 70 of file amrwbdec.c.
Referenced by amrwb_decode_frame(), anti_sparseness(), and update_sub_state().
| float AMRWBContext::fixed_vector[AMRWB_SFR_SIZE] |
algebraic codebook (fixed) vector for current subframe
Definition at line 66 of file amrwbdec.c.
Referenced by amrwb_decode_frame().
| enum Mode AMRWBContext::fr_cur_mode |
mode index of current frame
Definition at line 49 of file amrwbdec.c.
Referenced by amrwb_decode_frame(), anti_sparseness(), decode_mime_header(), decode_pitch_vector(), find_hb_gain(), hb_synthesis(), and synthesis().
| uint8_t AMRWBContext::fr_quality |
frame quality index (FQI)
Definition at line 50 of file amrwbdec.c.
Referenced by amrwb_decode_frame(), and decode_mime_header().
| AMRWBFrame AMRWBContext::frame |
AMRWB parameters decoded from bitstream.
Definition at line 48 of file amrwbdec.c.
Referenced by amrwb_decode_frame().
| float AMRWBContext::hpf_31_mem[2] |
Definition at line 82 of file amrwbdec.c.
Referenced by amrwb_decode_frame().
| float AMRWBContext::hpf_400_mem[2] |
previous values in the high pass filters
Definition at line 82 of file amrwbdec.c.
Referenced by amrwb_decode_frame().
| float AMRWBContext::isf_cur[LP_ORDER] |
working ISF vector from current frame
Definition at line 51 of file amrwbdec.c.
Referenced by amrwb_decode_frame().
| float AMRWBContext::isf_past_final[LP_ORDER] |
final processed ISF vector of the previous frame
Definition at line 53 of file amrwbdec.c.
Referenced by amrwb_decode_frame(), and amrwb_decode_init().
| float AMRWBContext::isf_q_past[LP_ORDER] |
quantized ISF vector of the previous frame
Definition at line 52 of file amrwbdec.c.
Referenced by amrwb_decode_frame().
| double AMRWBContext::isp[4][LP_ORDER] |
ISP vectors from current frame.
Definition at line 54 of file amrwbdec.c.
Referenced by amrwb_decode_frame().
| double AMRWBContext::isp_sub4_past[LP_ORDER] |
ISP vector for the 4th subframe of the previous frame.
Definition at line 55 of file amrwbdec.c.
Referenced by amrwb_decode_frame().
| int AMRWBContext::last_bitrate |
Definition at line 39 of file libvo-amrwbenc.c.
Referenced by amr_wb_encode_frame(), and amr_wb_encode_init().
| float AMRWBContext::lp_coef[4][LP_ORDER] |
Linear Prediction Coefficients from ISP vector.
Definition at line 57 of file amrwbdec.c.
Referenced by amrwb_decode_frame(), and hb_synthesis().
| float AMRWBContext::lpf_7_mem[HB_FIR_SIZE] |
previous values in the high-band low pass filter
Definition at line 85 of file amrwbdec.c.
Referenced by amrwb_decode_frame().
| int AMRWBContext::mode |
Definition at line 38 of file libvo-amrwbenc.c.
Referenced by amr_wb_encode_frame(), and amr_wb_encode_init().
| float AMRWBContext::pitch_gain[6] |
quantified pitch gains for the current and previous five subframes
Definition at line 69 of file amrwbdec.c.
Referenced by amrwb_decode_frame(), anti_sparseness(), synthesis(), and update_sub_state().
| uint8_t AMRWBContext::pitch_lag_int |
integer part of pitch lag of the previous subframe
Definition at line 60 of file amrwbdec.c.
Referenced by decode_pitch_vector(), and pitch_sharpening().
| float AMRWBContext::pitch_vector[AMRWB_SFR_SIZE] |
adaptive codebook (pitch) vector for current subframe
Definition at line 65 of file amrwbdec.c.
Referenced by amrwb_decode_frame(), decode_pitch_vector(), and synthesis().
| float AMRWBContext::prediction_error[4] |
quantified prediction errors {20log10(^gamma_gc)} for previous four subframes
Definition at line 68 of file amrwbdec.c.
Referenced by amrwb_decode_frame(), and amrwb_decode_init().
| uint8_t AMRWBContext::prev_ir_filter_nr |
previous impulse response filter "impNr": 0 - strong, 1 - medium, 2 - none
Definition at line 75 of file amrwbdec.c.
Referenced by anti_sparseness().
| float AMRWBContext::prev_sparse_fixed_gain |
previous fixed gain; used by anti-sparseness to determine "onset"
Definition at line 74 of file amrwbdec.c.
| float AMRWBContext::prev_tr_gain |
previous initial gain used by noise enhancer for threshold
Definition at line 76 of file amrwbdec.c.
Referenced by amrwb_decode_frame().
| AVLFG AMRWBContext::prng |
random number generator for white noise excitation
Definition at line 87 of file amrwbdec.c.
Referenced by amrwb_decode_init(), and scaled_hb_excitation().
| float AMRWBContext::samples_az[LP_ORDER+AMRWB_SFR_SIZE] |
low-band samples and memory from synthesis at 12.8kHz
Definition at line 78 of file amrwbdec.c.
Referenced by amrwb_decode_frame(), and update_sub_state().
| float AMRWBContext::samples_hb[LP_ORDER_16k+AMRWB_SFR_SIZE_16k] |
high-band samples and memory from synthesis at 16kHz
Definition at line 80 of file amrwbdec.c.
Referenced by amrwb_decode_frame(), and update_sub_state().
| float AMRWBContext::samples_up[UPS_MEM_SIZE+AMRWB_SFR_SIZE] |
low-band samples and memory processed for upsampling
Definition at line 79 of file amrwbdec.c.
Referenced by amrwb_decode_frame(), and update_sub_state().
| void* AMRWBContext::state |
Definition at line 37 of file libvo-amrwbenc.c.
Referenced by amr_decode_fix_avctx(), amr_wb_encode_close(), amr_wb_encode_frame(), and amr_wb_encode_init().
| float AMRWBContext::tilt_coef |
{beta_1} related to the voicing of the previous subframe
Definition at line 72 of file amrwbdec.c.
Referenced by amrwb_decode_frame(), and pitch_sharpening().
The documentation for this struct was generated from the following files:
Generated on Mon Nov 18 2024 06:52:11 for FFmpeg by
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