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h264dec: K&R formatting cosmetics

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Signed-off-by: Diego Biurrun <diego@biurrun.de>
This commit is contained in:
Vittorio Giovara 2013-09-20 17:28:04 +02:00 committed by Diego Biurrun
parent 67e285ceca
commit 01f111bdb2
1 changed files with 31 additions and 23 deletions
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54
libavformat/h264dec.c
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@ -24,47 +24,55 @@
static int h264_probe(AVProbeData *p) static int h264_probe(AVProbeData *p)
{ {
uint32_t code= -1; uint32_t code = -1;
int sps=0, pps=0, idr=0, res=0, sli=0; int sps = 0, pps = 0, idr = 0, res = 0, sli = 0;
int i; int i;
for(i=0; i<p->buf_size; i++){ for (i = 0; i < p->buf_size; i++) {
code = (code<<8) + p->buf[i]; code = (code << 8) + p->buf[i];
if ((code & 0xffffff00) == 0x100) { if ((code & 0xffffff00) == 0x100) {
int ref_idc= (code>>5)&3; int ref_idc = (code >> 5) & 3;
int type = code & 0x1F; int type = code & 0x1F;
static const int8_t ref_zero[32]={ static const int8_t ref_zero[] = {
2, 0, 0, 0, 0,-1, 1,-1, 2, 0, 0, 0, 0, -1, 1, -1,
-1, 1, 1, 1, 1,-1, 2, 2, -1, 1, 1, 1, 1, -1, 2, 2,
2, 2, 2, 0, 2, 2, 2, 2, 2, 2, 2, 0, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2 2, 2, 2, 2, 2, 2, 2, 2
}; };
if(code & 0x80) //forbidden bit if (code & 0x80) // forbidden_bit
return 0; return 0;
if(ref_zero[type] == 1 && ref_idc) if (ref_zero[type] == 1 && ref_idc)
return 0; return 0;
if(ref_zero[type] ==-1 && !ref_idc) if (ref_zero[type] == -1 && !ref_idc)
return 0; return 0;
if(ref_zero[type] == 2) if (ref_zero[type] == 2)
res++; res++;
switch(type){ switch (type) {
case 1: sli++; break; case 1:
case 5: idr++; break; sli++;
case 7: break;
case 5:
idr++;
break;
case 7:
if (p->buf[i + 2] & 0x03) if (p->buf[i + 2] & 0x03)
return 0; return 0;
sps++; sps++;
break; break;
case 8: pps++; break; case 8:
pps++;
break;
} }
} }
} }
if(sps && pps && (idr||sli>3) && res<(sps+pps+idr))
return AVPROBE_SCORE_EXTENSION + 1; // 1 more than .mpg if (sps && pps && (idr || sli > 3) && res < (sps + pps + idr))
return AVPROBE_SCORE_EXTENSION + 1; // 1 more than .mpg
return 0; return 0;
} }
FF_DEF_RAWVIDEO_DEMUXER(h264 , "raw H.264 video", h264_probe, "h26l,h264,264", AV_CODEC_ID_H264) FF_DEF_RAWVIDEO_DEMUXER(h264, "raw H.264 video", h264_probe, "h26l,h264,264", AV_CODEC_ID_H264)