mirror of https://github.com/opencv/opencv.git
Open Source Computer Vision Library
https://opencv.org/
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
213 lines
7.7 KiB
213 lines
7.7 KiB
// 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/ |
|
// ----------------------------------------------------------------------------- |
|
// |
|
// Speed-critical functions. |
|
// |
|
// Author: Skal (pascal.massimino@gmail.com) |
|
|
|
#ifndef WEBP_DSP_DSP_H_ |
|
#define WEBP_DSP_DSP_H_ |
|
|
|
#include "../webp/types.h" |
|
|
|
#if defined(__cplusplus) || defined(c_plusplus) |
|
extern "C" { |
|
#endif |
|
|
|
//------------------------------------------------------------------------------ |
|
// CPU detection |
|
|
|
#if defined(_MSC_VER) && (defined(_M_X64) || defined(_M_IX86)) |
|
#define WEBP_MSC_SSE2 // Visual C++ SSE2 targets |
|
#endif |
|
|
|
#if defined(__SSE2__) || defined(WEBP_MSC_SSE2) |
|
#define WEBP_USE_SSE2 |
|
#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) |
|
#define WEBP_USE_NEON |
|
#endif |
|
|
|
typedef enum { |
|
kSSE2, |
|
kSSE3, |
|
kNEON |
|
} 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 VP8ITransformWHT; |
|
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], |
|
int n, const struct VP8Matrix* const mtx); |
|
extern VP8QuantizeBlock VP8EncQuantizeBlock; |
|
|
|
// 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 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 */]; |
|
|
|
// 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 |
|
|
|
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 */]; |
|
|
|
// Initializes SSE2 version of the fancy upsamplers. |
|
void WebPInitUpsamplersSSE2(void); |
|
|
|
// NEON version |
|
void WebPInitUpsamplersNEON(void); |
|
|
|
#endif // FANCY_UPSAMPLING |
|
|
|
// Point-sampling methods. |
|
typedef void (*WebPSampleLinePairFunc)( |
|
const uint8_t* top_y, const uint8_t* bottom_y, |
|
const uint8_t* u, const uint8_t* v, |
|
uint8_t* top_dst, uint8_t* bottom_dst, int len); |
|
|
|
extern const WebPSampleLinePairFunc WebPSamplers[/* MODE_LAST */]; |
|
|
|
// General function for converting two lines of ARGB or RGBA. |
|
// 'alpha_is_last' should be true if 0xff000000 is stored in memory as |
|
// as 0x00, 0x00, 0x00, 0xff (little endian). |
|
WebPUpsampleLinePairFunc WebPGetLinePairConverter(int alpha_is_last); |
|
|
|
// YUV444->RGB converters |
|
typedef void (*WebPYUV444Converter)(const uint8_t* y, |
|
const uint8_t* u, const uint8_t* v, |
|
uint8_t* dst, int len); |
|
|
|
extern const WebPYUV444Converter WebPYUV444Converters[/* MODE_LAST */]; |
|
|
|
// Main function to be called |
|
void WebPInitUpsamplers(void); |
|
|
|
//------------------------------------------------------------------------------ |
|
// Pre-multiply planes with alpha values |
|
|
|
// Apply alpha pre-multiply on an rgba, bgra or argb plane of size w * h. |
|
// alpha_first should be 0 for argb, 1 for rgba or bgra (where alpha is last). |
|
extern void (*WebPApplyAlphaMultiply)( |
|
uint8_t* rgba, int alpha_first, int w, int h, int stride); |
|
|
|
// Same, buf specifically for RGBA4444 format |
|
extern void (*WebPApplyAlphaMultiply4444)( |
|
uint8_t* rgba4444, int w, int h, int stride); |
|
|
|
// To be called first before using the above. |
|
void WebPInitPremultiply(void); |
|
|
|
void WebPInitPremultiplySSE2(void); // should not be called directly. |
|
void WebPInitPremultiplyNEON(void); |
|
|
|
//------------------------------------------------------------------------------ |
|
|
|
#if defined(__cplusplus) || defined(c_plusplus) |
|
} // extern "C" |
|
#endif |
|
|
|
#endif /* WEBP_DSP_DSP_H_ */
|
|
|