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tiff: Make the TIFF_LONG and TIFF_SHORT types unsigned.

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TIFF v6.0 (unimplemented) adds signed equivalents.
This commit is contained in:
Alex Converse 2012-02-23 10:22:51 -08:00
parent 14c98973f5
commit e32548d133
1 changed files with 9 additions and 9 deletions
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18
libavcodec/tiff.c
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@ -59,24 +59,24 @@ typedef struct TiffContext {
LZWState *lzw;
} TiffContext;
static int tget_short(const uint8_t **p, int le){
int v = le ? AV_RL16(*p) : AV_RB16(*p);
static unsigned tget_short(const uint8_t **p, int le) {
unsigned v = le ? AV_RL16(*p) : AV_RB16(*p);
*p += 2;
return v;
}
static int tget_long(const uint8_t **p, int le){
int v = le ? AV_RL32(*p) : AV_RB32(*p);
static unsigned tget_long(const uint8_t **p, int le) {
unsigned v = le ? AV_RL32(*p) : AV_RB32(*p);
*p += 4;
return v;
}
static int tget(const uint8_t **p, int type, int le){
static unsigned tget(const uint8_t **p, int type, int le) {
switch(type){
case TIFF_BYTE : return *(*p)++;
case TIFF_SHORT: return tget_short(p, le);
case TIFF_LONG : return tget_long (p, le);
default : return -1;
default : return UINT_MAX;
}
}
@ -277,7 +277,7 @@ static int init_image(TiffContext *s)
static int tiff_decode_tag(TiffContext *s, const uint8_t *start, const uint8_t *buf, const uint8_t *end_buf)
{
int tag, type, count, off, value = 0;
unsigned tag, type, count, off, value = 0;
int i, j;
uint32_t *pal;
const uint8_t *rp, *gp, *bp;
@ -307,7 +307,7 @@ static int tiff_decode_tag(TiffContext *s, const uint8_t *start, const uint8_t *
break;
}
default:
value = -1;
value = UINT_MAX;
buf = start + off;
}
}else if(type_sizes[type] * count <= 4){
@ -391,7 +391,7 @@ static int tiff_decode_tag(TiffContext *s, const uint8_t *start, const uint8_t *
}
break;
case TIFF_ROWSPERSTRIP:
if(type == TIFF_LONG && value == -1)
if (type == TIFF_LONG && value == UINT_MAX)
value = s->avctx->height;
if(value < 1){
av_log(s->avctx, AV_LOG_ERROR, "Incorrect value of rows per strip\n");