37 lines
1.3 KiB
Diff
37 lines
1.3 KiB
Diff
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diff --git a/src/utils/quant_levels_dec_utils.c b/src/utils/quant_levels_dec_utils.c
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index 3818a78..f65b6cd 100644
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--- a/src/utils/quant_levels_dec_utils.c
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+++ b/src/utils/quant_levels_dec_utils.c
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@@ -261,9 +261,15 @@
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int WebPDequantizeLevels(uint8_t* const data, int width, int height, int stride,
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int strength) {
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- const int radius = 4 * strength / 100;
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+ int radius = 4 * strength / 100;
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+
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if (strength < 0 || strength > 100) return 0;
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if (data == NULL || width <= 0 || height <= 0) return 0; // bad params
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+
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+ // limit the filter size to not exceed the image dimensions
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+ if (2 * radius + 1 > width) radius = (width - 1) >> 1;
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+ if (2 * radius + 1 > height) radius = (height - 1) >> 1;
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+
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if (radius > 0) {
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SmoothParams p;
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memset(&p, 0, sizeof(p));
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diff --git a/src/mux/muxread.c b/src/mux/muxread.c
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index ef50dae..fbe9f05 100644
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--- a/src/mux/muxread.c
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+++ b/src/mux/muxread.c
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@@ -138,6 +138,7 @@
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wpi->is_partial_ = 1; // Waiting for a VP8 chunk.
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break;
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case WEBP_CHUNK_IMAGE:
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+ if (wpi->img_ != NULL) goto Fail; // Only 1 image chunk allowed.
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if (ChunkSetNth(&subchunk, &wpi->img_, 1) != WEBP_MUX_OK) goto Fail;
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if (!MuxImageFinalize(wpi)) goto Fail;
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wpi->is_partial_ = 0; // wpi is completely filled.
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