libavcodec/g729dec.c File Reference
#include <stdlib.h>
#include <inttypes.h>
#include <limits.h>
#include <stdio.h>
#include <string.h>
#include <math.h>
#include <assert.h>
#include "avcodec.h"
#include "libavutil/avutil.h"
#include "bitstream.h"
#include "g729.h"
#include "lsp.h"
#include "celp_math.h"
#include "acelp_filters.h"
#include "acelp_pitch_delay.h"
#include "acelp_vectors.h"
#include "g729data.h"
Go to the source code of this file.
|
Data Structures |
| struct | G729_format_description |
Defines |
| #define | LSFQ_MIN 40 |
| | minimum quantized LSF value (3.2.4) 0.005 in Q13
|
| #define | LSFQ_MAX 25681 |
| | maximum quantized LSF value (3.2.4) 3.135 in Q13
|
| #define | LSFQ_DIFF_MIN 321 |
| | minimum LSF distance (3.2.4) 0.0391 in Q13
|
| #define | SHARP_MIN 3277 |
| | minimum gain pitch value (3.8, Equation 47) 0.2 in (1.14)
|
| #define | SHARP_MAX 13017 |
| | maximum gain pitch value (3.8, Equation 47) (EE) This does not comply with the specification.
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Functions |
| static uint16_t | g729_random (uint16_t value) |
| | pseudo random number generator
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| static int | g729_get_parity (uint8_t value) |
| | Get parity bit of bit 2.
|
| | if (avctx->channels!=1) |
| | ff_acelp_weighted_vector_sum (fc+pitch_delay_int[i], fc+pitch_delay_int[i], fc, 1<< 14, av_clip(ctx->gain_pitch, SHARP_MIN, SHARP_MAX), 0, 14, ctx->subframe_size-pitch_delay_int[i]) |
| | if (ctx->frame_erasure) |
Define Documentation
| #define LSFQ_DIFF_MIN 321 |
minimum LSF distance (3.2.4) 0.0391 in Q13
Definition at line 57 of file g729dec.c.
maximum quantized LSF value (3.2.4) 3.135 in Q13
Definition at line 51 of file g729dec.c.
minimum quantized LSF value (3.2.4) 0.005 in Q13
Definition at line 45 of file g729dec.c.
maximum gain pitch value (3.8, Equation 47) (EE) This does not comply with the specification.
Specification says about 0.8, which should be 13107 in (1.14), but reference C code uses 13017 (equals to 0.7945) instead of it.
Definition at line 72 of file g729dec.c.
minimum gain pitch value (3.8, Equation 47) 0.2 in (1.14)
Definition at line 63 of file g729dec.c.
Function Documentation
| ff_acelp_weighted_vector_sum |
( |
fc+ |
pitch_delay_int[i], |
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fc+ |
pitch_delay_int[i], |
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fc |
, |
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1<< |
14, |
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av_clip(ctx->gain_pitch, SHARP_MIN, SHARP_MAX) |
, |
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0 |
, |
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14 |
, |
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ctx->subframe_size- |
pitch_delay_int[i] | |
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) |
| | |
| static int g729_get_parity |
( |
uint8_t |
value |
) |
[inline, static] |
Get parity bit of bit 2.
.7
Definition at line 96 of file g729dec.c.
| static uint16_t g729_random |
( |
uint16_t |
value |
) |
[inline, static] |
pseudo random number generator
Definition at line 88 of file g729dec.c.
| if |
( |
ctx-> |
frame_erasure |
) |
|
| if |
( |
avctx->channels! |
= 1 |
) |
|
Definition at line 101 of file g729dec.c.
Referenced by ape_decode_value(), ape_read_header(), audio_read_header(), audio_read_packet(), av_encode(), av_ext2dbl(), avcodec_default_reget_buffer(), average_quantized_coeffs(), avs_decode_frame(), blend_subrect(), cavs_decode_frame(), cin_read_packet(), cmv_decode_inter(), compute_pkt_fields(), compute_status(), decode_end(), dv_extract_audio(), dv_inject_audio(), dvbsub_display_end_segment(), dvbsub_parse_page_segment(), dvbsub_parse_region_segment(), dvvideo_init(), ebml_parse_elem(), ff_mjpeg_decode_sos(), ff_vdpau_mpeg_picture_complete(), ff_vdpau_vc1_decode_picture(), ff_xvmc_decode_mb(), ff_xvmc_field_start(), FfmpegFindNextSchroParseUnit(), flashsv_decode_frame(), g726_init(), id3v2_read_ttag(), imc_decode_frame(), imdct_and_windowing(), ipvideo_decode_block_opcode_0x9(), ipvideo_decode_block_opcode_0xA(), ipvideo_decode_frame(), main(), matroska_probe(), mlp_parse(), mm_decode_inter(), motion_search(), mpeg1_encode_sequence_header(), mpeg_mux_init(), mpegps_probe(), mpegts_write_pes(), MPV_common_init(), msrle_decode_8_16_24_32(), mxf_parse_mpeg2_frame(), mxf_read_header(), nut_probe(), nut_read_seek(), ogg_read_page(), paint_mouse_pointer(), qdm2_decode(), qdm2_fft_tone_synthesizer(), qtrle_decode_1bpp(), rpza_decode_stream(), rtsp_read_packet(), shorten_decode_frame(), smc_decode_stream(), svq3_decode_frame(), svq3_mc_dir(), sws_getContext(), tgv_decode_inter(), tm2_decode_blocks(), vc1_decode_b_mb(), video_image_display(), vorbis_parse_setup_hdr_codebooks(), vp3_decode_frame(), vp56_init(), wsvqa_read_header(), and X264_init().
