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/mqcdec.c | |
| parent | b7a5a477b8ff4d4e3028b9dfb9a9df0a41463f92 (diff) | |
basic type mechanism working
Diffstat (limited to 'ffmpeg/libavcodec/mqcdec.c')
| -rw-r--r-- | ffmpeg/libavcodec/mqcdec.c | 22 |
1 files changed, 11 insertions, 11 deletions
diff --git a/ffmpeg/libavcodec/mqcdec.c b/ffmpeg/libavcodec/mqcdec.c index 56e22f8..3625069 100644 --- a/ffmpeg/libavcodec/mqcdec.c +++ b/ffmpeg/libavcodec/mqcdec.c @@ -29,14 +29,14 @@ static void bytein(MqcState *mqc) { - if (*mqc->bp == 0xff){ - if (*(mqc->bp+1) > 0x8f) + if (*mqc->bp == 0xff) { + if (*(mqc->bp + 1) > 0x8f) mqc->c++; - else{ + else { mqc->bp++; mqc->c += 2 + 0xfe00 - (*mqc->bp << 9); } - } else{ + } else { mqc->bp++; mqc->c += 1 + 0xff00 - (*mqc->bp << 8); } @@ -45,20 +45,20 @@ static void bytein(MqcState *mqc) static int exchange(MqcState *mqc, uint8_t *cxstate, int lps) { int d; - if ((mqc->a < ff_mqc_qe[*cxstate]) ^ (!lps)){ + if ((mqc->a < ff_mqc_qe[*cxstate]) ^ (!lps)) { if (lps) mqc->a = ff_mqc_qe[*cxstate]; d = *cxstate & 1; *cxstate = ff_mqc_nmps[*cxstate]; - } else{ + } else { if (lps) mqc->a = ff_mqc_qe[*cxstate]; d = 1 - (*cxstate & 1); *cxstate = ff_mqc_nlps[*cxstate]; } - // renormd: - do{ - if (!(mqc->c & 0xff)){ + // do RENORMD: see ISO/IEC 15444-1:2002 §C.3.3 + do { + if (!(mqc->c & 0xff)) { mqc->c -= 0x100; bytein(mqc); } @@ -72,7 +72,7 @@ void ff_mqc_initdec(MqcState *mqc, uint8_t *bp) { ff_mqc_init_contexts(mqc); mqc->bp = bp; - mqc->c = (*mqc->bp ^ 0xff) << 16; + mqc->c = (*mqc->bp ^ 0xff) << 16; bytein(mqc); mqc->c = mqc->c << 7; mqc->a = 0x8000; @@ -81,7 +81,7 @@ void ff_mqc_initdec(MqcState *mqc, uint8_t *bp) int ff_mqc_decode(MqcState *mqc, uint8_t *cxstate) { mqc->a -= ff_mqc_qe[*cxstate]; - if ((mqc->c >> 16) < mqc->a){ + if ((mqc->c >> 16) < mqc->a) { if (mqc->a & 0x8000) return *cxstate & 1; else |