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make QuantizeLevels() store the sum of squared error

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(instead of MSE).
Useful for directly storing the alpha-PSNR (in another patch)

Change-Id: I4072864f9c53eb4f38366e8025a2816eb14f504e
This commit is contained in:
Pascal Massimino
2012-07-23 14:26:56 -07:00
parent e45a446ad5
commit 7d732f905b
2 changed files with 13 additions and 22 deletions
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8
src/utils/quant_levels.h
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@ -21,16 +21,16 @@ extern "C" {
#endif
// Replace the input 'data' of size 'width'x'height' with 'num-levels'
// quantized values. If not NULL, 'mse' will contain the mean-squared error.
// 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* data, int width, int height, int num_levels,
float* mse);
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* data, int width, int height);
int DequantizeLevels(uint8_t* const data, int width, int height);
#if defined(__cplusplus) || defined(c_plusplus)
} // extern "C"