Data Fields | |
| AVFrame | avframe |
| AVFrame for decoded samples. | |
| AMRWBFrame | frame |
| AMRWB parameters decoded from bitstream. | |
| enum Mode | fr_cur_mode |
| mode index of current frame | |
| uint8_t | fr_quality |
| frame quality index (FQI) | |
| float | isf_cur [LP_ORDER] |
| working ISF vector from current frame | |
| float | isf_q_past [LP_ORDER] |
| quantized ISF vector of the previous frame | |
| float | isf_past_final [LP_ORDER] |
| final processed ISF vector of the previous frame | |
| double | isp [4][LP_ORDER] |
| ISP vectors from current frame. | |
| double | isp_sub4_past [LP_ORDER] |
| ISP vector for the 4th subframe of the previous frame. | |
| float | lp_coef [4][LP_ORDER] |
| Linear Prediction Coefficients from ISP vector. | |
| uint8_t | base_pitch_lag |
| integer part of pitch lag for the next relative subframe | |
| uint8_t | pitch_lag_int |
| integer part of pitch lag of the previous subframe | |
| float | excitation_buf [AMRWB_P_DELAY_MAX+LP_ORDER+2+AMRWB_SFR_SIZE] |
| current excitation and all necessary excitation history | |
| float * | excitation |
| points to current excitation in excitation_buf[] | |
| float | pitch_vector [AMRWB_SFR_SIZE] |
| adaptive codebook (pitch) vector for current subframe | |
| float | fixed_vector [AMRWB_SFR_SIZE] |
| algebraic codebook (fixed) vector for current subframe | |
| float | prediction_error [4] |
| quantified prediction errors {20log10(^gamma_gc)} for previous four subframes | |
| float | pitch_gain [6] |
| quantified pitch gains for the current and previous five subframes | |
| float | fixed_gain [2] |
| quantified fixed gains for the current and previous subframes | |
| float | tilt_coef |
| {beta_1} related to the voicing of the previous subframe | |
| float | prev_sparse_fixed_gain |
| previous fixed gain; used by anti-sparseness to determine "onset" | |
| uint8_t | prev_ir_filter_nr |
| previous impulse response filter "impNr": 0 - strong, 1 - medium, 2 - none | |
| float | prev_tr_gain |
| previous initial gain used by noise enhancer for threshold | |
| float | samples_az [LP_ORDER+AMRWB_SFR_SIZE] |
| low-band samples and memory from synthesis at 12.8kHz | |
| float | samples_up [UPS_MEM_SIZE+AMRWB_SFR_SIZE] |
| low-band samples and memory processed for upsampling | |
| float | samples_hb [LP_ORDER_16k+AMRWB_SFR_SIZE_16k] |
| high-band samples and memory from synthesis at 16kHz | |
| float | hpf_31_mem [2] |
| float | hpf_400_mem [2] |
| previous values in the high pass filters | |
| float | demph_mem [1] |
| previous value in the de-emphasis filter | |
| float | bpf_6_7_mem [HB_FIR_SIZE] |
| previous values in the high-band band pass filter | |
| float | lpf_7_mem [HB_FIR_SIZE] |
| previous values in the high-band low pass filter | |
| AVLFG | prng |
| random number generator for white noise excitation | |
| uint8_t | first_frame |
| flag active during decoding of the first frame | |
| AVClass * | av_class |
| void * | state |
| int | mode |
| int | last_bitrate |
| int | allow_dtx |
Definition at line 42 of file amrwbdec.c.
Definition at line 32 of file libvo-amrwbenc.c.
AVFrame for decoded samples.
Definition at line 43 of file amrwbdec.c.
Referenced by amrwb_decode_frame(), and amrwb_decode_init().
integer part of pitch lag for the next relative subframe
Definition at line 55 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 80 of file amrwbdec.c.
Referenced by amrwb_decode_frame().
| float AMRWBContext::demph_mem[1] |
previous value in the de-emphasis filter
Definition at line 79 of file amrwbdec.c.
Referenced by amrwb_decode_frame().
| float* AMRWBContext::excitation |
points to current excitation in excitation_buf[]
Definition at line 59 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 58 of file amrwbdec.c.
Referenced by amrwb_decode_init(), and update_sub_state().
flag active during decoding of the first frame
Definition at line 84 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 66 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 62 of file amrwbdec.c.
Referenced by amrwb_decode_frame().
mode index of current frame
Definition at line 45 of file amrwbdec.c.
Referenced by amrwb_decode_frame(), anti_sparseness(), decode_mime_header(), decode_pitch_vector(), find_hb_gain(), hb_synthesis(), and synthesis().
frame quality index (FQI)
Definition at line 46 of file amrwbdec.c.
Referenced by amrwb_decode_frame(), and decode_mime_header().
AMRWB parameters decoded from bitstream.
Definition at line 44 of file amrwbdec.c.
Referenced by amrwb_decode_frame().
| float AMRWBContext::hpf_31_mem[2] |
| float AMRWBContext::hpf_400_mem[2] |
previous values in the high pass filters
Definition at line 78 of file amrwbdec.c.
Referenced by amrwb_decode_frame().
| float AMRWBContext::isf_cur[LP_ORDER] |
working ISF vector from current frame
Definition at line 47 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 49 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 48 of file amrwbdec.c.
Referenced by amrwb_decode_frame().
| double AMRWBContext::isp[4][LP_ORDER] |
ISP vectors from current frame.
Definition at line 50 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 51 of file amrwbdec.c.
Referenced by amrwb_decode_frame().
Definition at line 35 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 53 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 81 of file amrwbdec.c.
Referenced by amrwb_decode_frame().
Definition at line 34 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 65 of file amrwbdec.c.
Referenced by amrwb_decode_frame(), anti_sparseness(), synthesis(), and update_sub_state().
integer part of pitch lag of the previous subframe
Definition at line 56 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 61 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 64 of file amrwbdec.c.
Referenced by amrwb_decode_frame(), and amrwb_decode_init().
previous impulse response filter "impNr": 0 - strong, 1 - medium, 2 - none
Definition at line 71 of file amrwbdec.c.
Referenced by anti_sparseness().
previous fixed gain; used by anti-sparseness to determine "onset"
Definition at line 70 of file amrwbdec.c.
previous initial gain used by noise enhancer for threshold
Definition at line 72 of file amrwbdec.c.
Referenced by amrwb_decode_frame().
random number generator for white noise excitation
Definition at line 83 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 74 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 76 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 75 of file amrwbdec.c.
Referenced by amrwb_decode_frame(), and update_sub_state().
| void* AMRWBContext::state |
Definition at line 33 of file libvo-amrwbenc.c.
Referenced by 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 68 of file amrwbdec.c.
Referenced by amrwb_decode_frame(), and pitch_sharpening().
1.5.8