FFmpeg

Data Fields  
AMRNBFrame  frame 
decoded AMR parameters (lsf coefficients, codebook indexes, etc) More...  
uint8_t  bad_frame_indicator 
bad frame ? 1 : 0 More...  
enum Mode  cur_frame_mode 
int16_t  prev_lsf_r [LP_FILTER_ORDER] 
residual LSF vector from previous subframe More...  
double  lsp [4][LP_FILTER_ORDER] 
lsp vectors from current frame More...  
double  prev_lsp_sub4 [LP_FILTER_ORDER] 
lsp vector for the 4th subframe of the previous frame More...  
float  lsf_q [4][LP_FILTER_ORDER] 
Interpolated LSF vector for fixed gain smoothing. More...  
float  lsf_avg [LP_FILTER_ORDER] 
vector of averaged lsf vector More...  
float  lpc [4][LP_FILTER_ORDER] 
lpc coefficient vectors for 4 subframes More...  
uint8_t  pitch_lag_int 
integer part of pitch lag from current subframe More...  
float  excitation_buf [PITCH_DELAY_MAX+LP_FILTER_ORDER+1+AMR_SUBFRAME_SIZE] 
current excitation and all necessary excitation history More...  
float *  excitation 
pointer to the current excitation vector in excitation_buf More...  
float  pitch_vector [AMR_SUBFRAME_SIZE] 
adaptive code book (pitch) vector More...  
float  fixed_vector [AMR_SUBFRAME_SIZE] 
algebraic codebook (fixed) vector (must be kept zero between frames) More...  
float  prediction_error [4] 
quantified prediction errors {20log10(^gamma_gc)} for previous four subframes More...  
float  pitch_gain [5] 
quantified pitch gains for the current and previous four subframes More...  
float  fixed_gain [5] 
quantified fixed gains for the current and previous four subframes More...  
float  beta 
previous pitch_gain, bounded by [0.0,SHARP_MAX] More...  
uint8_t  diff_count 
the number of subframes for which diff has been above 0.65 More...  
uint8_t  hang_count 
the number of subframes since a hangover period started More...  
float  prev_sparse_fixed_gain 
previous fixed gain; used by antisparseness processing to determine "onset" More...  
uint8_t  prev_ir_filter_nr 
previous impulse response filter "impNr": 0  strong, 1  medium, 2  none More...  
uint8_t  ir_filter_onset 
flag for impulse response filter strength More...  
float  postfilter_mem [10] 
previous intermediate values in the formant filter More...  
float  tilt_mem 
previous input to tilt compensation filter More...  
float  postfilter_agc 
previous factor used for adaptive gain control More...  
float  high_pass_mem [2] 
previous intermediate values in the highpass filter More...  
float  samples_in [LP_FILTER_ORDER+AMR_SUBFRAME_SIZE] 
floating point samples More...  
ACELPFContext  acelpf_ctx 
context for filters for ACELPbased codecs More...  
ACELPVContext  acelpv_ctx 
context for vector operations for ACELPbased codecs More...  
CELPFContext  celpf_ctx 
context for filters for CELPbased codecs More...  
CELPMContext  celpm_ctx 
context for fixed point math operations More...  
FFRawDemuxerContext  rawctx 
Definition at line 101 of file amrnbdec.c.
AMRNBFrame AMRContext::frame 
decoded AMR parameters (lsf coefficients, codebook indexes, etc)
Definition at line 102 of file amrnbdec.c.
Referenced by amrnb_decode_frame(), decode_gains(), lsf2lsp_3(), lsf2lsp_5(), and unpack_bitstream().
uint8_t AMRContext::bad_frame_indicator 
enum Mode AMRContext::cur_frame_mode 
Definition at line 104 of file amrnbdec.c.
Referenced by amrnb_decode_frame(), anti_sparseness(), decode_pitch_vector(), lsf2lsp_3(), postfilter(), and synthesis().
int16_t AMRContext::prev_lsf_r[LP_FILTER_ORDER] 
residual LSF vector from previous subframe
Definition at line 106 of file amrnbdec.c.
Referenced by lsf2lsp_3(), lsf2lsp_5(), and lsf2lsp_for_mode12k2().
double AMRContext::lsp[4][LP_FILTER_ORDER] 
lsp vectors from current frame
Definition at line 107 of file amrnbdec.c.
Referenced by amrnb_decode_frame(), lsf2lsp_3(), lsf2lsp_5(), and update_state().
double AMRContext::prev_lsp_sub4[LP_FILTER_ORDER] 
lsp vector for the 4th subframe of the previous frame
Definition at line 108 of file amrnbdec.c.
Referenced by amrnb_decode_init(), lsf2lsp_3(), lsf2lsp_5(), and update_state().
float AMRContext::lsf_q[4][LP_FILTER_ORDER] 
Interpolated LSF vector for fixed gain smoothing.
Definition at line 110 of file amrnbdec.c.
Referenced by amrnb_decode_frame(), amrnb_decode_init(), lsf2lsp_3(), and lsf2lsp_for_mode12k2().
float AMRContext::lsf_avg[LP_FILTER_ORDER] 
vector of averaged lsf vector
Definition at line 111 of file amrnbdec.c.
Referenced by amrnb_decode_frame(), and amrnb_decode_init().
float AMRContext::lpc[4][LP_FILTER_ORDER] 
lpc coefficient vectors for 4 subframes
Definition at line 113 of file amrnbdec.c.
Referenced by amrnb_decode_frame().
uint8_t AMRContext::pitch_lag_int 
integer part of pitch lag from current subframe
Definition at line 115 of file amrnbdec.c.
Referenced by decode_pitch_vector(), and pitch_sharpening().
float AMRContext::excitation_buf[PITCH_DELAY_MAX+LP_FILTER_ORDER+1+AMR_SUBFRAME_SIZE] 
current excitation and all necessary excitation history
Definition at line 117 of file amrnbdec.c.
Referenced by amrnb_decode_init(), and update_state().
float* AMRContext::excitation 
pointer to the current excitation vector in excitation_buf
Definition at line 118 of file amrnbdec.c.
Referenced by amrnb_decode_frame(), amrnb_decode_init(), and decode_pitch_vector().
float AMRContext::pitch_vector[AMR_SUBFRAME_SIZE] 
adaptive code book (pitch) vector
Definition at line 120 of file amrnbdec.c.
Referenced by decode_pitch_vector(), and synthesis().
float AMRContext::fixed_vector[AMR_SUBFRAME_SIZE] 
algebraic codebook (fixed) vector (must be kept zero between frames)
Definition at line 121 of file amrnbdec.c.
Referenced by amrnb_decode_frame().
float AMRContext::prediction_error[4] 
quantified prediction errors {20log10(^gamma_gc)} for previous four subframes
Definition at line 123 of file amrnbdec.c.
Referenced by amrnb_decode_frame(), and amrnb_decode_init().
float AMRContext::pitch_gain[5] 
quantified pitch gains for the current and previous four subframes
Definition at line 124 of file amrnbdec.c.
Referenced by amrnb_decode_frame(), anti_sparseness(), decode_gains(), pitch_sharpening(), synthesis(), and update_state().
float AMRContext::fixed_gain[5] 
quantified fixed gains for the current and previous four subframes
Definition at line 125 of file amrnbdec.c.
Referenced by amrnb_decode_frame(), fixed_gain_smooth(), and update_state().
float AMRContext::beta 
previous pitch_gain, bounded by [0.0,SHARP_MAX]
Definition at line 127 of file amrnbdec.c.
Referenced by pitch_sharpening().
uint8_t AMRContext::diff_count 
the number of subframes for which diff has been above 0.65
Definition at line 128 of file amrnbdec.c.
Referenced by fixed_gain_smooth().
uint8_t AMRContext::hang_count 
the number of subframes since a hangover period started
Definition at line 129 of file amrnbdec.c.
Referenced by fixed_gain_smooth().
float AMRContext::prev_sparse_fixed_gain 
previous fixed gain; used by antisparseness processing to determine "onset"
Definition at line 131 of file amrnbdec.c.
Referenced by anti_sparseness().
uint8_t AMRContext::prev_ir_filter_nr 
previous impulse response filter "impNr": 0  strong, 1  medium, 2  none
Definition at line 132 of file amrnbdec.c.
Referenced by anti_sparseness().
uint8_t AMRContext::ir_filter_onset 
flag for impulse response filter strength
Definition at line 133 of file amrnbdec.c.
Referenced by anti_sparseness().
float AMRContext::postfilter_mem[10] 
previous intermediate values in the formant filter
Definition at line 135 of file amrnbdec.c.
Referenced by postfilter().
float AMRContext::tilt_mem 
previous input to tilt compensation filter
Definition at line 136 of file amrnbdec.c.
Referenced by postfilter().
float AMRContext::postfilter_agc 
previous factor used for adaptive gain control
Definition at line 137 of file amrnbdec.c.
Referenced by postfilter().
float AMRContext::high_pass_mem[2] 
previous intermediate values in the highpass filter
Definition at line 138 of file amrnbdec.c.
Referenced by amrnb_decode_frame().
float AMRContext::samples_in[LP_FILTER_ORDER+AMR_SUBFRAME_SIZE] 
floating point samples
Definition at line 140 of file amrnbdec.c.
Referenced by amrnb_decode_frame(), postfilter(), and update_state().
ACELPFContext AMRContext::acelpf_ctx 
context for filters for ACELPbased codecs
Definition at line 142 of file amrnbdec.c.
Referenced by amrnb_decode_frame(), amrnb_decode_init(), and decode_pitch_vector().
ACELPVContext AMRContext::acelpv_ctx 
context for vector operations for ACELPbased codecs
Definition at line 143 of file amrnbdec.c.
Referenced by amrnb_decode_frame(), amrnb_decode_init(), lsf2lsp_3(), lsf2lsp_for_mode12k2(), and synthesis().
CELPFContext AMRContext::celpf_ctx 
context for filters for CELPbased codecs
Definition at line 144 of file amrnbdec.c.
Referenced by amrnb_decode_init(), postfilter(), synthesis(), and tilt_factor().
CELPMContext AMRContext::celpm_ctx 
context for fixed point math operations
Definition at line 145 of file amrnbdec.c.
Referenced by amrnb_decode_frame(), amrnb_decode_init(), postfilter(), synthesis(), and tilt_factor().
FFRawDemuxerContext AMRContext::rawctx 