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authorJuan Linietsky <reduzio@gmail.com>2015-12-04 10:18:28 -0300
committerJuan Linietsky <reduzio@gmail.com>2015-12-04 10:18:28 -0300
commitda113fe40d0a9410859912473d53e43903dc6c8e (patch)
tree23c6019a28a11d67241789721d1feecdd19410e6 /drivers/webpold/utils/quant_levels.h
parent064fd762fae75371658e773a3acf39616e813b08 (diff)
-Upgraded webp to a MUCH newer version. Hoping it fixes some bugs in the process. Keeping old version just in case for now.
-Added ability to convert xml and tscn scenes to binary on export, makes loading of larger scenes faster
Diffstat (limited to 'drivers/webpold/utils/quant_levels.h')
-rw-r--r--drivers/webpold/utils/quant_levels.h39
1 files changed, 39 insertions, 0 deletions
diff --git a/drivers/webpold/utils/quant_levels.h b/drivers/webpold/utils/quant_levels.h
new file mode 100644
index 0000000000..4f165fd230
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+++ b/drivers/webpold/utils/quant_levels.h
@@ -0,0 +1,39 @@
+// Copyright 2011 Google Inc. All Rights Reserved.
+//
+// This code is licensed under the same terms as WebM:
+// Software License Agreement: http://www.webmproject.org/license/software/
+// Additional IP Rights Grant: http://www.webmproject.org/license/additional/
+// -----------------------------------------------------------------------------
+//
+// Alpha plane quantization utility
+//
+// Author: Vikas Arora (vikasa@google.com)
+
+#ifndef WEBP_UTILS_QUANT_LEVELS_H_
+#define WEBP_UTILS_QUANT_LEVELS_H_
+
+#include <stdlib.h>
+
+#include "../types.h"
+
+#if defined(__cplusplus) || defined(c_plusplus)
+extern "C" {
+#endif
+
+// Replace the input 'data' of size 'width'x'height' with 'num-levels'
+// quantized values. If not NULL, 'sse' will contain the sum of squared error.
+// Valid range for 'num_levels' is [2, 256].
+// Returns false in case of error (data is NULL, or parameters are invalid).
+int QuantizeLevels(uint8_t* const data, int width, int height, int num_levels,
+ uint64_t* const sse);
+
+// Apply post-processing to input 'data' of size 'width'x'height' assuming
+// that the source was quantized to a reduced number of levels.
+// Returns false in case of error (data is NULL, invalid parameters, ...).
+int DequantizeLevels(uint8_t* const data, int width, int height);
+
+#if defined(__cplusplus) || defined(c_plusplus)
+} // extern "C"
+#endif
+
+#endif /* WEBP_UTILS_QUANT_LEVELS_H_ */