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check and control reduceMemory and reduceTime in stream mode #1635

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Feb 11, 2024
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check and control reduceMemory and reduceTime in stream mode #1635

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17 changes: 17 additions & 0 deletions src/lib/OpenEXRUtil/ImfCheckFile.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1260,7 +1260,11 @@ realloc_deepdata(exr_decode_pipeline_t* decode)
}

if (ud->size () < bytes)
{
ud->resize (bytes);
if (ud->capacity() < bytes)
return EXR_ERR_OUT_OF_MEMORY;
}

uint8_t* dptr = &((*ud)[0]);
for (int c = 0; c < decode->channel_count; c++)
Expand Down Expand Up @@ -1730,6 +1734,19 @@ runCoreChecks (
cinit.read_fn = &memstream_read;
cinit.size_fn = &memstream_size;
cinit.error_handler_fn = &core_error_handler_cb;
if (reduceMemory || reduceTime)
{
/* could use set_default functions for this, but those just
* initialize the context, doing it in the initializer is mt
* safe...
* exr_set_default_maximum_image_size (2048, 2048);
* exr_set_default_maximum_tile_size (512, 512);
*/
cinit.max_image_width = 2048;
cinit.max_image_height = 2048;
cinit.max_tile_width = 512;
cinit.max_tile_height = 512;
}

rv = exr_start_read (&f, "<memstream>", &cinit);
if (rv != EXR_ERR_SUCCESS) return true;
Expand Down
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