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imgutils: make av_image_get_linesize() return AVERROR(EINVAL) for invalid pixel formats

This commit is contained in:
Stefano Sabatini 2011-05-13 16:27:35 +02:00
parent d8c7a21602
commit 0d73227c71
1 changed files with 3 additions and 0 deletions
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3
libavutil/imgutils.c
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@ -50,6 +50,9 @@ int av_image_get_linesize(enum PixelFormat pix_fmt, int width, int plane)
int max_step_comp[4]; /* the component for each plane which has the max pixel step */
int s, linesize;
if ((unsigned)pix_fmt >= PIX_FMT_NB || desc->flags & PIX_FMT_HWACCEL)
return AVERROR(EINVAL);
av_image_fill_max_pixsteps(max_step, max_step_comp, desc);
s = (max_step_comp[plane] == 1 || max_step_comp[plane] == 2) ? desc->log2_chroma_w : 0;
linesize = max_step[plane] * (((width + (1 << s) - 1)) >> s);