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-rw-r--r--src/3rdparty/libwebp/src/dsp/lossless.h165
1 files changed, 132 insertions, 33 deletions
diff --git a/src/3rdparty/libwebp/src/dsp/lossless.h b/src/3rdparty/libwebp/src/dsp/lossless.h
index 8c7551c..e063bdd 100644
--- a/src/3rdparty/libwebp/src/dsp/lossless.h
+++ b/src/3rdparty/libwebp/src/dsp/lossless.h
@@ -25,14 +25,17 @@
extern "C" {
#endif
+#ifdef WEBP_EXPERIMENTAL_FEATURES
+#include "../enc/delta_palettization.h"
+#endif // WEBP_EXPERIMENTAL_FEATURES
+
//------------------------------------------------------------------------------
-// Signatures and generic function-pointers
+// Decoding
typedef uint32_t (*VP8LPredictorFunc)(uint32_t left, const uint32_t* const top);
extern VP8LPredictorFunc VP8LPredictors[16];
typedef void (*VP8LProcessBlueAndRedFunc)(uint32_t* argb_data, int num_pixels);
-extern VP8LProcessBlueAndRedFunc VP8LSubtractGreenFromBlueAndRed;
extern VP8LProcessBlueAndRedFunc VP8LAddGreenToBlueAndRed;
typedef struct {
@@ -44,9 +47,19 @@ typedef struct {
} VP8LMultipliers;
typedef void (*VP8LTransformColorFunc)(const VP8LMultipliers* const m,
uint32_t* argb_data, int num_pixels);
-extern VP8LTransformColorFunc VP8LTransformColor;
extern VP8LTransformColorFunc VP8LTransformColorInverse;
+struct VP8LTransform; // Defined in dec/vp8li.h.
+
+// Performs inverse transform of data given transform information, start and end
+// rows. Transform will be applied to rows [row_start, row_end[.
+// The *in and *out pointers refer to source and destination data respectively
+// corresponding to the intermediate row (row_start).
+void VP8LInverseTransform(const struct VP8LTransform* const transform,
+ int row_start, int row_end,
+ const uint32_t* const in, uint32_t* const out);
+
+// Color space conversion.
typedef void (*VP8LConvertFunc)(const uint32_t* src, int num_pixels,
uint8_t* dst);
extern VP8LConvertFunc VP8LConvertBGRAToRGB;
@@ -55,9 +68,47 @@ extern VP8LConvertFunc VP8LConvertBGRAToRGBA4444;
extern VP8LConvertFunc VP8LConvertBGRAToRGB565;
extern VP8LConvertFunc VP8LConvertBGRAToBGR;
+// Converts from BGRA to other color spaces.
+void VP8LConvertFromBGRA(const uint32_t* const in_data, int num_pixels,
+ WEBP_CSP_MODE out_colorspace, uint8_t* const rgba);
+
+// color mapping related functions.
+static WEBP_INLINE uint32_t VP8GetARGBIndex(uint32_t idx) {
+ return (idx >> 8) & 0xff;
+}
+
+static WEBP_INLINE uint8_t VP8GetAlphaIndex(uint8_t idx) {
+ return idx;
+}
+
+static WEBP_INLINE uint32_t VP8GetARGBValue(uint32_t val) {
+ return val;
+}
+
+static WEBP_INLINE uint8_t VP8GetAlphaValue(uint32_t val) {
+ return (val >> 8) & 0xff;
+}
+
+typedef void (*VP8LMapARGBFunc)(const uint32_t* src,
+ const uint32_t* const color_map,
+ uint32_t* dst, int y_start,
+ int y_end, int width);
+typedef void (*VP8LMapAlphaFunc)(const uint8_t* src,
+ const uint32_t* const color_map,
+ uint8_t* dst, int y_start,
+ int y_end, int width);
+
+extern VP8LMapARGBFunc VP8LMapColor32b;
+extern VP8LMapAlphaFunc VP8LMapColor8b;
+
+// Similar to the static method ColorIndexInverseTransform() that is part of
+// lossless.c, but used only for alpha decoding. It takes uint8_t (rather than
+// uint32_t) arguments for 'src' and 'dst'.
+void VP8LColorIndexInverseTransformAlpha(
+ const struct VP8LTransform* const transform, int y_start, int y_end,
+ const uint8_t* src, uint8_t* dst);
+
// Expose some C-only fallback functions
-void VP8LTransformColor_C(const VP8LMultipliers* const m,
- uint32_t* data, int num_pixels);
void VP8LTransformColorInverse_C(const VP8LMultipliers* const m,
uint32_t* data, int num_pixels);
@@ -68,47 +119,51 @@ void VP8LConvertBGRAToRGBA4444_C(const uint32_t* src,
void VP8LConvertBGRAToRGB565_C(const uint32_t* src,
int num_pixels, uint8_t* dst);
void VP8LConvertBGRAToBGR_C(const uint32_t* src, int num_pixels, uint8_t* dst);
-void VP8LSubtractGreenFromBlueAndRed_C(uint32_t* argb_data, int num_pixels);
void VP8LAddGreenToBlueAndRed_C(uint32_t* data, int num_pixels);
// Must be called before calling any of the above methods.
void VP8LDspInit(void);
//------------------------------------------------------------------------------
-// Image transforms.
+// Encoding
-struct VP8LTransform; // Defined in dec/vp8li.h.
+extern VP8LProcessBlueAndRedFunc VP8LSubtractGreenFromBlueAndRed;
+extern VP8LTransformColorFunc VP8LTransformColor;
+typedef void (*VP8LCollectColorBlueTransformsFunc)(
+ const uint32_t* argb, int stride,
+ int tile_width, int tile_height,
+ int green_to_blue, int red_to_blue, int histo[]);
+extern VP8LCollectColorBlueTransformsFunc VP8LCollectColorBlueTransforms;
+
+typedef void (*VP8LCollectColorRedTransformsFunc)(
+ const uint32_t* argb, int stride,
+ int tile_width, int tile_height,
+ int green_to_red, int histo[]);
+extern VP8LCollectColorRedTransformsFunc VP8LCollectColorRedTransforms;
-// Performs inverse transform of data given transform information, start and end
-// rows. Transform will be applied to rows [row_start, row_end[.
-// The *in and *out pointers refer to source and destination data respectively
-// corresponding to the intermediate row (row_start).
-void VP8LInverseTransform(const struct VP8LTransform* const transform,
- int row_start, int row_end,
- const uint32_t* const in, uint32_t* const out);
+// Expose some C-only fallback functions
+void VP8LTransformColor_C(const VP8LMultipliers* const m,
+ uint32_t* data, int num_pixels);
+void VP8LSubtractGreenFromBlueAndRed_C(uint32_t* argb_data, int num_pixels);
+void VP8LCollectColorRedTransforms_C(const uint32_t* argb, int stride,
+ int tile_width, int tile_height,
+ int green_to_red, int histo[]);
+void VP8LCollectColorBlueTransforms_C(const uint32_t* argb, int stride,
+ int tile_width, int tile_height,
+ int green_to_blue, int red_to_blue,
+ int histo[]);
-// Similar to the static method ColorIndexInverseTransform() that is part of
-// lossless.c, but used only for alpha decoding. It takes uint8_t (rather than
-// uint32_t) arguments for 'src' and 'dst'.
-void VP8LColorIndexInverseTransformAlpha(
- const struct VP8LTransform* const transform, int y_start, int y_end,
- const uint8_t* src, uint8_t* dst);
+//------------------------------------------------------------------------------
+// Image transforms.
-void VP8LResidualImage(int width, int height, int bits,
+void VP8LResidualImage(int width, int height, int bits, int low_effort,
uint32_t* const argb, uint32_t* const argb_scratch,
- uint32_t* const image);
+ uint32_t* const image, int exact);
void VP8LColorSpaceTransform(int width, int height, int bits, int quality,
uint32_t* const argb, uint32_t* image);
//------------------------------------------------------------------------------
-// Color space conversion.
-
-// Converts from BGRA to other color spaces.
-void VP8LConvertFromBGRA(const uint32_t* const in_data, int num_pixels,
- WEBP_CSP_MODE out_colorspace, uint8_t* const rgba);
-
-//------------------------------------------------------------------------------
// Misc methods.
// Computes sampled size of 'size' when sampling using 'sampling bits'.
@@ -119,6 +174,14 @@ static WEBP_INLINE uint32_t VP8LSubSampleSize(uint32_t size,
// -----------------------------------------------------------------------------
// Faster logarithm for integers. Small values use a look-up table.
+
+// The threshold till approximate version of log_2 can be used.
+// Practically, we can get rid of the call to log() as the two values match to
+// very high degree (the ratio of these two is 0.99999x).
+// Keeping a high threshold for now.
+#define APPROX_LOG_WITH_CORRECTION_MAX 65536
+#define APPROX_LOG_MAX 4096
+#define LOG_2_RECIPROCAL 1.44269504088896338700465094007086
#define LOG_LOOKUP_IDX_MAX 256
extern const float kLog2Table[LOG_LOOKUP_IDX_MAX];
extern const float kSLog2Table[LOG_LOOKUP_IDX_MAX];
@@ -141,23 +204,56 @@ static WEBP_INLINE float VP8LFastSLog2(uint32_t v) {
typedef double (*VP8LCostFunc)(const uint32_t* population, int length);
typedef double (*VP8LCostCombinedFunc)(const uint32_t* X, const uint32_t* Y,
int length);
+typedef float (*VP8LCombinedShannonEntropyFunc)(const int X[256],
+ const int Y[256]);
extern VP8LCostFunc VP8LExtraCost;
extern VP8LCostCombinedFunc VP8LExtraCostCombined;
+extern VP8LCombinedShannonEntropyFunc VP8LCombinedShannonEntropy;
typedef struct { // small struct to hold counters
int counts[2]; // index: 0=zero steak, 1=non-zero streak
int streaks[2][2]; // [zero/non-zero][streak<3 / streak>=3]
} VP8LStreaks;
-typedef VP8LStreaks (*VP8LCostCountFunc)(const uint32_t* population,
- int length);
typedef VP8LStreaks (*VP8LCostCombinedCountFunc)(const uint32_t* X,
const uint32_t* Y, int length);
-extern VP8LCostCountFunc VP8LHuffmanCostCount;
extern VP8LCostCombinedCountFunc VP8LHuffmanCostCombinedCount;
+typedef struct { // small struct to hold bit entropy results
+ double entropy; // entropy
+ uint32_t sum; // sum of the population
+ int nonzeros; // number of non-zero elements in the population
+ uint32_t max_val; // maximum value in the population
+ uint32_t nonzero_code; // index of the last non-zero in the population
+} VP8LBitEntropy;
+
+void VP8LBitEntropyInit(VP8LBitEntropy* const entropy);
+
+// Get the combined symbol bit entropy and Huffman cost stats for the
+// distributions 'X' and 'Y'. Those results can then be refined according to
+// codec specific heuristics.
+void VP8LGetCombinedEntropyUnrefined(const uint32_t* const X,
+ const uint32_t* const Y, int length,
+ VP8LBitEntropy* const bit_entropy,
+ VP8LStreaks* const stats);
+// Get the entropy for the distribution 'X'.
+void VP8LGetEntropyUnrefined(const uint32_t* const X, int length,
+ VP8LBitEntropy* const bit_entropy,
+ VP8LStreaks* const stats);
+
+void VP8LBitsEntropyUnrefined(const uint32_t* const array, int n,
+ VP8LBitEntropy* const entropy);
+
+typedef void (*GetEntropyUnrefinedHelperFunc)(uint32_t val, int i,
+ uint32_t* const val_prev,
+ int* const i_prev,
+ VP8LBitEntropy* const bit_entropy,
+ VP8LStreaks* const stats);
+// Internal function used by VP8LGet*EntropyUnrefined.
+extern GetEntropyUnrefinedHelperFunc VP8LGetEntropyUnrefinedHelper;
+
typedef void (*VP8LHistogramAddFunc)(const VP8LHistogram* const a,
const VP8LHistogram* const b,
VP8LHistogram* const out);
@@ -240,6 +336,9 @@ static WEBP_INLINE uint32_t VP8LSubPixels(uint32_t a, uint32_t b) {
void VP8LBundleColorMap(const uint8_t* const row, int width,
int xbits, uint32_t* const dst);
+// Must be called before calling any of the above methods.
+void VP8LEncDspInit(void);
+
//------------------------------------------------------------------------------
#ifdef __cplusplus
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-21 02:46:16 +0000