mirror of https://git.ffmpeg.org/ffmpeg.git
Do not try to read 16bit gray png files with alpha channel.
FFmpeg does not support gray16a. Fixes the crash in ticket #644.
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@ -498,7 +498,8 @@ static int decode_frame(AVCodecContext *avctx,
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avctx->pix_fmt = PIX_FMT_MONOBLACK;
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} else if (s->color_type == PNG_COLOR_TYPE_PALETTE) {
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avctx->pix_fmt = PIX_FMT_PAL8;
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} else if (s->color_type == PNG_COLOR_TYPE_GRAY_ALPHA) {
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} else if (s->bit_depth == 8 &&
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s->color_type == PNG_COLOR_TYPE_GRAY_ALPHA) {
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avctx->pix_fmt = PIX_FMT_GRAY8A;
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} else {
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goto fail;
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