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sws: group the parameters validity checks together

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Also, fail with an error code rather than 0.
This commit is contained in:
Anton Khirnov 2021-05-19 11:55:22 +02:00
parent c05cab34a9
commit 2730639259
1 changed files with 9 additions and 9 deletions
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18
libswscale/swscale.c
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@ -890,6 +890,15 @@ int attribute_align_arg sws_scale(struct SwsContext *c,
return AVERROR(EINVAL);
}
if (!check_image_pointers(srcSlice, c->srcFormat, srcStride)) {
av_log(c, AV_LOG_ERROR, "bad src image pointers\n");
return AVERROR(EINVAL);
}
if (!check_image_pointers((const uint8_t* const*)dst, c->dstFormat, dstStride)) {
av_log(c, AV_LOG_ERROR, "bad dst image pointers\n");
return AVERROR(EINVAL);
}
if (c->gamma_flag && c->cascaded_context[0])
return scale_gamma(c, srcSlice, srcStride, srcSliceY, srcSliceH, dst, dstStride);
@ -905,15 +914,6 @@ 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((const uint8_t* const*)dst, c->dstFormat, dstStride)) {
av_log(c, AV_LOG_ERROR, "bad dst image pointers\n");
return 0;
}
if (c->sliceDir == 0 && srcSliceY != 0 && srcSliceY + srcSliceH != c->srcH) {
av_log(c, AV_LOG_ERROR, "Slices start in the middle!\n");
return 0;