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avcodec/pngenc: Mark unreachable default switch cases as such

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Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt
2025-10-02 21:07:48 +02:00
parent 660983b7f3
commit dcfef80bd9
1 changed files with 6 additions and 1 deletions
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7
libavcodec/pngenc.c
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@@ -195,6 +195,8 @@ static void png_filter_row(PNGEncContext *c, uint8_t *dst, int filter_type,
dst[i] = src[i] - top[i];
sub_png_paeth_prediction(dst + i, src + i, top + i, size - i, bpp);
break;
default:
av_unreachable("PNG_FILTER_VALUE_MIXED can't happen here and all others are covered");
}
}
@@ -816,6 +818,9 @@ static int apng_do_inverse_blend(AVFrame *output, const AVFrame *input,
palette[*background] >> 24 == 0)
break;
return -1;
default:
av_unreachable("Pixfmt has been checked before");
}
memmove(output_data, foreground, bpp);
@@ -1193,7 +1198,7 @@ static av_cold int png_enc_init(AVCodecContext *avctx)
s->color_type = PNG_COLOR_TYPE_PALETTE;
break;
default:
return -1;
av_unreachable("Already checked via CODEC_PIXFMTS");
}
s->bits_per_pixel = ff_png_get_nb_channels(s->color_type) * s->bit_depth;