diff options
| author | Tim Redfern <tim@eclectronics.org> | 2013-12-29 12:19:38 +0000 |
|---|---|---|
| committer | Tim Redfern <tim@eclectronics.org> | 2013-12-29 12:19:38 +0000 |
| commit | f7813a5324be39d13ab536c245d15dfc602a7849 (patch) | |
| tree | fad99148b88823d34a5df2f0a25881a002eb291b /ffmpeg/libavcodec/mqc.h | |
| parent | b7a5a477b8ff4d4e3028b9dfb9a9df0a41463f92 (diff) | |
basic type mechanism working
Diffstat (limited to 'ffmpeg/libavcodec/mqc.h')
| -rw-r--r-- | ffmpeg/libavcodec/mqc.h | 35 |
1 files changed, 26 insertions, 9 deletions
diff --git a/ffmpeg/libavcodec/mqc.h b/ffmpeg/libavcodec/mqc.h index b28c13e..c0827bd 100644 --- a/ffmpeg/libavcodec/mqc.h +++ b/ffmpeg/libavcodec/mqc.h @@ -1,5 +1,5 @@ /* - * MQ-coder + * MQ-coder: structures, common and decoder functions * Copyright (c) 2007 Kamil Nowosad * * This file is part of FFmpeg. @@ -28,16 +28,16 @@ * @author Kamil Nowosad */ -#include "avcodec.h" +#include <stdint.h> #define MQC_CX_UNI 17 #define MQC_CX_RL 18 -extern uint16_t ff_mqc_qe[2*47]; -extern uint8_t ff_mqc_nlps[2*47]; -extern uint8_t ff_mqc_nmps[2*47]; +extern uint16_t ff_mqc_qe[2 * 47]; +extern uint8_t ff_mqc_nlps[2 * 47]; +extern uint8_t ff_mqc_nmps[2 * 47]; -typedef struct { +typedef struct MqcState { uint8_t *bp, *bpstart; unsigned int a; unsigned int c; @@ -61,15 +61,32 @@ int ff_mqc_flush(MqcState *mqc); /* decoder */ -/** initialize the decoder */ +/** + * Initialize MQ-decoder. + * @param mqc MQ decoder state + * @param bp byte poiter + */ void ff_mqc_initdec(MqcState *mqc, uint8_t *bp); -/** returns decoded bit with context cx */ +/** + * MQ decoder. + * @param mqc MQ decoder state + * @param cxstate Context + * @return Decision (0 ot 1) + */ int ff_mqc_decode(MqcState *mqc, uint8_t *cxstate); /* common */ -/** initialize the contexts */ +/** + * MQ-coder Initialize context tables (QE, NLPS, NMPS) + */ +void ff_mqc_init_context_tables(void); + +/** + * MQ-coder context initialisations. + * @param mqc MQ-coder context + */ void ff_mqc_init_contexts(MqcState *mqc); #endif /* AVCODEC_MQC_H */ |