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iff: do not decode unsupported pbms with ham decoder

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This prevents the segfault reported by ticket #1054
This commit is contained in:
Peter Ross 2012-03-12 10:32:11 +11:00
parent b25a265a5c
commit e05253bf49
1 changed files with 4 additions and 1 deletions
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5
libavcodec/iff.c
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@ -638,12 +638,15 @@ static int decode_frame_byterun1(AVCodecContext *avctx,
uint8_t *row = &s->frame.data[0][y*s->frame.linesize[0]];
buf += decode_byterun(row, avctx->width, buf, buf_end);
}
} else { // IFF-PBM: HAM to PIX_FMT_BGR32
} else if (s->ham) { // IFF-PBM: HAM to PIX_FMT_BGR32
for (y = 0; y < avctx->height ; y++) {
uint8_t *row = &s->frame.data[0][y*s->frame.linesize[0]];
buf += decode_byterun(s->ham_buf, avctx->width, buf, buf_end);
decode_ham_plane32((uint32_t *) row, s->ham_buf, s->ham_palbuf, s->planesize);
}
} else {
av_log_ask_for_sample(avctx, "unsupported bpp\n");
return AVERROR_INVALIDDATA;
}
}