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swscale: Convert the check check_image_pointers helper to a macro 

Avoid warnings about types mismatch and make the code a little simpler.
This commit is contained in:
Luca Barbato 2017-04-15 14:55:33 +02:00
parent f56fa95cd1
commit 37f573543c
1 changed files with 15 additions and 22 deletions
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37
libswscale/swscale_unscaled.c
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@ -1190,20 +1190,19 @@ static void reset_ptr(const uint8_t *src[], enum AVPixelFormat format)
}
}
static int check_image_pointers(uint8_t *data[4], enum AVPixelFormat pix_fmt,
const int linesizes[4])
{
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
int i;
for (i = 0; i < 4; i++) {
int plane = desc->comp[i].plane;
if (!data[plane] || !linesizes[plane])
return 0;
}
return 1;
}
#define CHECK_IMAGE_POINTERS(data, pix_fmt, linesizes, msg) \
do { \
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt); \
int i; \
\
for (i = 0; i < 4; i++) { \
int plane = desc->comp[i].plane; \
if (!data[plane] || !linesizes[plane]) { \
av_log(c, AV_LOG_ERROR, msg); \
return 0; \
} \
} \
} while (0)
/**
* swscale wrapper, so we don't need to export the SwsContext.
@ -1223,14 +1222,8 @@ int attribute_align_arg sws_scale(struct SwsContext *c,
if (srcSliceH == 0)
return 0;
if (!check_image_pointers(srcSlice, c->srcFormat, srcStride)) {
av_log(c, AV_LOG_ERROR, "bad src image pointers\n");
return 0;
}
if (!check_image_pointers(dst, c->dstFormat, dstStride)) {
av_log(c, AV_LOG_ERROR, "bad dst image pointers\n");
return 0;
}
CHECK_IMAGE_POINTERS(srcSlice, c->srcFormat, srcStride, "bad src image pointers\n");
CHECK_IMAGE_POINTERS(dst, c->dstFormat, dstStride, "bad dst image pointers\n");
if (c->sliceDir == 0 && srcSliceY != 0 && srcSliceY + srcSliceH != c->srcH) {
av_log(c, AV_LOG_ERROR, "Slices start in the middle!\n");