mii.rar_Destination_predictions

// Copyright 2011 Google Inc. All Rights Reserved. // // Use of this source code is governed by a BSD-style license // that can be found in the COPYING file in the root of the source // tree. An additional intellectual property rights grant can be found // in the file PATENTS. All contributing project authors may // be found in the AUTHORS file in the root of the source tree. // ----------------------------------------------------------------------------- // // Speed-critical functions. // // Author: Skal ([email protected]) #ifndef WEBP_DSP_DSP_H_ #define WEBP_DSP_DSP_H_ #ifdef HAVE_CONFIG_H #include "../webp/config.h" #endif #include "../webp/types.h" #ifdef __cplusplus extern "C" { #endif //------------------------------------------------------------------------------ // CPU detection #if defined(__GNUC__) # define LOCAL_GCC_VERSION ((__GNUC__ << 8) | __GNUC_MINOR__) # define LOCAL_GCC_PREREQ(maj, min) \ (LOCAL_GCC_VERSION >= (((maj) << 8) | (min))) #else # define LOCAL_GCC_PREREQ(maj, min) 0 #endif #if defined(_MSC_VER) && _MSC_VER > 1310 && \ (defined(_M_X64) || defined(_M_IX86)) #define WEBP_MSC_SSE2 // Visual C++ SSE2 targets #endif // WEBP_HAVE_* are used to indicate the presence of the instruction set in dsp // files without intrinsics, allowing the corresponding Init() to be called. // Files containing intrinsics will need to be built targeting the instruction // set so should succeed on one of the earlier tests. #if defined(__SSE2__) || defined(WEBP_MSC_SSE2) || defined(WEBP_HAVE_SSE2) #define WEBP_USE_SSE2 #endif #if defined(__AVX2__) || defined(WEBP_HAVE_AVX2) #define WEBP_USE_AVX2 #endif #if defined(__ANDROID__) && defined(__ARM_ARCH_7A__) #define WEBP_ANDROID_NEON // Android targets that might support NEON #endif #if defined(__ARM_NEON__) || defined(WEBP_ANDROID_NEON) || defined(__aarch64__) #define WEBP_USE_NEON #endif #if defined(__mips__) && !defined(__mips64) && (__mips_isa_rev < 6) #define WEBP_USE_MIPS32 #endif typedef enum { kSSE2, kSSE3, kAVX, kAVX2, kNEON, kMIPS32 } CPUFeature; // returns true if the CPU supports the feature. typedef int (*VP8CPUInfo)(CPUFeature feature); extern VP8CPUInfo VP8GetCPUInfo; //------------------------------------------------------------------------------ // Encoding // Transforms // VP8Idct: Does one of two inverse transforms. If do_two is set, the transforms // will be done for (ref, in, dst) and (ref + 4, in + 16, dst + 4). typedef void (*VP8Idct)(const uint8_t* ref, const int16_t* in, uint8_t* dst, int do_two); typedef void (*VP8Fdct)(const uint8_t* src, const uint8_t* ref, int16_t* out); typedef void (*VP8WHT)(const int16_t* in, int16_t* out); extern VP8Idct VP8ITransform; extern VP8Fdct VP8FTransform; extern VP8WHT VP8FTransformWHT; // Predictions // *dst is the destination block. *top and *left can be NULL. typedef void (*VP8IntraPreds)(uint8_t *dst, const uint8_t* left, const uint8_t* top); typedef void (*VP8Intra4Preds)(uint8_t *dst, const uint8_t* top); extern VP8Intra4Preds VP8EncPredLuma4; extern VP8IntraPreds VP8EncPredLuma16; extern VP8IntraPreds VP8EncPredChroma8; typedef int (*VP8Metric)(const uint8_t* pix, const uint8_t* ref); extern VP8Metric VP8SSE16x16, VP8SSE16x8, VP8SSE8x8, VP8SSE4x4; typedef int (*VP8WMetric)(const uint8_t* pix, const uint8_t* ref, const uint16_t* const weights); extern VP8WMetric VP8TDisto4x4, VP8TDisto16x16; typedef void (*VP8BlockCopy)(const uint8_t* src, uint8_t* dst); extern VP8BlockCopy VP8Copy4x4; // Quantization struct VP8Matrix; // forward declaration typedef int (*VP8QuantizeBlock)(int16_t in[16], int16_t out[16], const struct VP8Matrix* const mtx); extern VP8QuantizeBlock VP8EncQuantizeBlock; // specific to 2nd transform: typedef int (*VP8QuantizeBlockWHT)(int16_t in[16], int16_t out[16], const struct VP8Matrix* const mtx); extern VP8QuantizeBlockWHT VP8EncQuantizeBlockWHT; // Collect histogram for susceptibility calculation and accumulate in histo[]. struct VP8Histogram; typedef void (*VP8CHisto)(const uint8_t* ref, const uint8_t* pred, int start_block, int end_block, struct VP8Histogram* const histo); extern const int VP8DspScan[16 + 4 + 4]; extern VP8CHisto VP8CollectHistogram; void VP8EncDspInit(void); // must be called before using any of the above //------------------------------------------------------------------------------ // Decoding typedef void (*VP8DecIdct)(const int16_t* coeffs, uint8_t* dst); // when doing two transforms, coeffs is actually int16_t[2][16]. typedef void (*VP8DecIdct2)(const int16_t* coeffs, uint8_t* dst, int do_two); extern VP8DecIdct2 VP8Transform; extern VP8DecIdct VP8TransformAC3; extern VP8DecIdct VP8TransformUV; extern VP8DecIdct VP8TransformDC; extern VP8DecIdct VP8TransformDCUV; extern VP8WHT VP8TransformWHT; // *dst is the destination block, with stride BPS. Boundary samples are // assumed accessible when needed. typedef void (*VP8PredFunc)(uint8_t* dst); extern const VP8PredFunc VP8PredLuma16[/* NUM_B_DC_MODES */]; extern const VP8PredFunc VP8PredChroma8[/* NUM_B_DC_MODES */]; extern const VP8PredFunc VP8PredLuma4[/* NUM_BMODES */]; // clipping tables (for filtering) extern const int8_t* const VP8ksclip1; // clips [-1020, 1020] to [-128, 127] extern const int8_t* const VP8ksclip2; // clips [-112, 112] to [-16, 15] extern const uint8_t* const VP8kclip1; // clips [-255,511] to [0,255] extern const uint8_t* const VP8kabs0; // abs(x) for x in [-255,255] void VP8InitClipTables(void); // must be called first // simple filter (only for luma) typedef void (*VP8SimpleFilterFunc)(uint8_t* p, int stride, int thresh); extern VP8SimpleFilterFunc VP8SimpleVFilter16; extern VP8SimpleFilterFunc VP8SimpleHFilter16; extern VP8SimpleFilterFunc VP8SimpleVFilter16i; // filter 3 inner edges extern VP8SimpleFilterFunc VP8SimpleHFilter16i; // regular filter (on both macroblock edges and inner edges) typedef void (*VP8LumaFilterFunc)(uint8_t* luma, int stride, int thresh, int ithresh, int hev_t); typedef void (*VP8ChromaFilterFunc)(uint8_t* u, uint8_t* v, int stride, int thresh, int ithresh, int hev_t); // on outer edge extern VP8LumaFilterFunc VP8VFilter16; extern VP8LumaFilterFunc VP8HFilter16; extern VP8ChromaFilterFunc VP8VFilter8; extern VP8ChromaFilterFunc VP8HFilter8; // on inner edge extern VP8LumaFilterFunc VP8VFilter16i; // filtering 3 inner edges altogether extern VP8LumaFilterFunc VP8HFilter16i; extern VP8ChromaFilterFunc VP8VFilter8i; // filtering u and v altogether extern VP8ChromaFilterFunc VP8HFilter8i; // must be called before anything using the above void VP8DspInit(void); //------------------------------------------------------------------------------ // WebP I/O #define FANCY_UPSAMPLING // undefined to remove fancy upsampling support // Convert a pair of y/u/v lines together to the output rgb/a colorspace. // bottom_y can be NULL if only one line of output is needed (at top/bottom). typedef void (*WebPUpsampleLinePairFunc)( const uint8_t* top_y, const uint8_t* bottom_y, const uint8_t* top_u, const uint8_t* top_v, const uint8_t* cur_u, const uint8_t* cur_v, uint8_t* top_dst, uint8_t* bottom_dst, int len); #ifdef FANCY_UPSAMPLING // Fancy upsampling functions to convert YUV to RGB(A) modes extern WebPUpsampleLinePairFunc WebPUpsamplers[/* MODE_LAST */]; #endif // FANCY_UPSAMPLING // Per-row point-sampling methods. typedef void (*WebPSamplerRowFunc)(const uint8_t* y, const uint8_t* u, const uint8_t* v, uint8_t* dst, int len); // Generic function to apply 'WebPSamplerRowFunc' to the whole plane: void WebPSamplerProcessPlane(const uint8_t* y, int y_stride,