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fix mjpeg_decode_rgb32().

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Before this patch the `rgb` pointer was incremented by the "inner" for
loop but never reset to the start of the buffer by the "outer" while
loop.

This bug was introduced by the refactoring in
6158aeb30a.
This commit is contained in:
Alexandre Perrin 2018-01-31 15:29:01 +01:00
parent eca042a787
commit d283137a60
1 changed files with 6 additions and 5 deletions
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11
demo/mjpeg.c
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@ -232,15 +232,16 @@ int mjpeg_decode_rgb32(struct mjpeg_decoder *mj,
} }
while (mj->dinfo.output_scanline < mj->dinfo.image_height) { while (mj->dinfo.output_scanline < mj->dinfo.image_height) {
uint8_t *scr = out + pitch * mj->dinfo.output_scanline; uint8_t *scr = out + pitch * mj->dinfo.output_scanline;
uint8_t *output = rgb;
int i; int i;
jpeg_read_scanlines(&mj->dinfo, &rgb, 1); jpeg_read_scanlines(&mj->dinfo, &output, 1);
for (i = 0; i < mj->dinfo.image_width; i++) { for (i = 0; i < mj->dinfo.image_width; i++) {
scr[0] = rgb[2]; scr[0] = output[2];
scr[1] = rgb[1]; scr[1] = output[1];
scr[2] = rgb[0]; scr[2] = output[0];
scr += 4; scr += 4;
rgb += 3; output += 3;
} }
} }
free(rgb); free(rgb);