dec.c | Explore in Territory

// Copyright 2010 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 decoding functions, default plain-C implementations.
//
// Author: Skal ([email protected])

#include <assert.h>

#include "src/dsp/dsp.h"
#include "src/dec/vp8i_dec.h"
#include "src/utils/utils.h"

//------------------------------------------------------------------------------

static WEBP_INLINE uint8_t clip_8b(int v) { … }

//------------------------------------------------------------------------------
// Transforms (Paragraph 14.4)

#define STORE …

#define STORE2 …

#if !WEBP_NEON_OMIT_C_CODE
static void TransformOne_C(const int16_t* in, uint8_t* dst) { … }

// Simplified transform when only in[0], in[1] and in[4] are non-zero
static void TransformAC3_C(const int16_t* in, uint8_t* dst) { … }
#undef STORE2

static void TransformTwo_C(const int16_t* in, uint8_t* dst, int do_two) { … }
#endif  // !WEBP_NEON_OMIT_C_CODE

static void TransformUV_C(const int16_t* in, uint8_t* dst) { … }

#if !WEBP_NEON_OMIT_C_CODE
static void TransformDC_C(const int16_t* in, uint8_t* dst) { … }
#endif  // !WEBP_NEON_OMIT_C_CODE

static void TransformDCUV_C(const int16_t* in, uint8_t* dst) { … }

#undef STORE

//------------------------------------------------------------------------------
// Paragraph 14.3

#if !WEBP_NEON_OMIT_C_CODE
static void TransformWHT_C(const int16_t* in, int16_t* out) { … }
#endif  // !WEBP_NEON_OMIT_C_CODE

void (*VP8TransformWHT)(const int16_t* in, int16_t* out);

//------------------------------------------------------------------------------
// Intra predictions

#define DST …

#if !WEBP_NEON_OMIT_C_CODE
static WEBP_INLINE void TrueMotion(uint8_t* dst, int size) { … }
static void TM4_C(uint8_t* dst)   { … }
static void TM8uv_C(uint8_t* dst) { … }
static void TM16_C(uint8_t* dst)  { … }

//------------------------------------------------------------------------------
// 16x16

static void VE16_C(uint8_t* dst) { … }

static void HE16_C(uint8_t* dst) { … }

static WEBP_INLINE void Put16(int v, uint8_t* dst) { … }

static void DC16_C(uint8_t* dst) { … }

static void DC16NoTop_C(uint8_t* dst) { … }

static void DC16NoLeft_C(uint8_t* dst) { … }

static void DC16NoTopLeft_C(uint8_t* dst) { … }
#endif  // !WEBP_NEON_OMIT_C_CODE

VP8PredFunc VP8PredLuma16[NUM_B_DC_MODES];

//------------------------------------------------------------------------------
// 4x4

#define AVG3 …
#define AVG2 …

#if !WEBP_NEON_OMIT_C_CODE
static void VE4_C(uint8_t* dst) { … }
#endif  // !WEBP_NEON_OMIT_C_CODE

static void HE4_C(uint8_t* dst) { … }

#if !WEBP_NEON_OMIT_C_CODE
static void DC4_C(uint8_t* dst) { … }

static void RD4_C(uint8_t* dst) { … }

static void LD4_C(uint8_t* dst) { … }
#endif  // !WEBP_NEON_OMIT_C_CODE

static void VR4_C(uint8_t* dst) { … }

static void VL4_C(uint8_t* dst) { … }

static void HU4_C(uint8_t* dst) { … }

static void HD4_C(uint8_t* dst) { … }

#undef DST
#undef AVG3
#undef AVG2

VP8PredFunc VP8PredLuma4[NUM_BMODES];

//------------------------------------------------------------------------------
// Chroma

#if !WEBP_NEON_OMIT_C_CODE
static void VE8uv_C(uint8_t* dst) { … }

static void HE8uv_C(uint8_t* dst) { … }

// helper for chroma-DC predictions
static WEBP_INLINE void Put8x8uv(uint8_t value, uint8_t* dst) { … }

static void DC8uv_C(uint8_t* dst) { … }

static void DC8uvNoLeft_C(uint8_t* dst) { … }

static void DC8uvNoTop_C(uint8_t* dst) { … }

static void DC8uvNoTopLeft_C(uint8_t* dst) { … }
#endif  // !WEBP_NEON_OMIT_C_CODE

VP8PredFunc VP8PredChroma8[NUM_B_DC_MODES];

//------------------------------------------------------------------------------
// Edge filtering functions

#if !WEBP_NEON_OMIT_C_CODE || WEBP_NEON_WORK_AROUND_GCC
// 4 pixels in, 2 pixels out
static WEBP_INLINE void DoFilter2_C(uint8_t* p, int step) { … }

// 4 pixels in, 4 pixels out
static WEBP_INLINE void DoFilter4_C(uint8_t* p, int step) { … }

// 6 pixels in, 6 pixels out
static WEBP_INLINE void DoFilter6_C(uint8_t* p, int step) { … }

static WEBP_INLINE int Hev(const uint8_t* p, int step, int thresh) { … }
#endif  // !WEBP_NEON_OMIT_C_CODE || WEBP_NEON_WORK_AROUND_GCC

#if !WEBP_NEON_OMIT_C_CODE
static WEBP_INLINE int NeedsFilter_C(const uint8_t* p, int step, int t) { … }
#endif  // !WEBP_NEON_OMIT_C_CODE

#if !WEBP_NEON_OMIT_C_CODE || WEBP_NEON_WORK_AROUND_GCC
static WEBP_INLINE int NeedsFilter2_C(const uint8_t* p,
                                      int step, int t, int it) { … }
#endif  // !WEBP_NEON_OMIT_C_CODE || WEBP_NEON_WORK_AROUND_GCC

//------------------------------------------------------------------------------
// Simple In-loop filtering (Paragraph 15.2)

#if !WEBP_NEON_OMIT_C_CODE
static void SimpleVFilter16_C(uint8_t* p, int stride, int thresh) { … }

static void SimpleHFilter16_C(uint8_t* p, int stride, int thresh) { … }

static void SimpleVFilter16i_C(uint8_t* p, int stride, int thresh) { … }

static void SimpleHFilter16i_C(uint8_t* p, int stride, int thresh) { … }
#endif  // !WEBP_NEON_OMIT_C_CODE

//------------------------------------------------------------------------------
// Complex In-loop filtering (Paragraph 15.3)

#if !WEBP_NEON_OMIT_C_CODE || WEBP_NEON_WORK_AROUND_GCC
static WEBP_INLINE void FilterLoop26_C(uint8_t* p,
                                       int hstride, int vstride, int size,
                                       int thresh, int ithresh,
                                       int hev_thresh) { … }

static WEBP_INLINE void FilterLoop24_C(uint8_t* p,
                                       int hstride, int vstride, int size,
                                       int thresh, int ithresh,
                                       int hev_thresh) { … }
#endif  // !WEBP_NEON_OMIT_C_CODE || WEBP_NEON_WORK_AROUND_GCC

#if !WEBP_NEON_OMIT_C_CODE
// on macroblock edges
static void VFilter16_C(uint8_t* p, int stride,
                        int thresh, int ithresh, int hev_thresh) { … }

static void HFilter16_C(uint8_t* p, int stride,
                        int thresh, int ithresh, int hev_thresh) { … }

// on three inner edges
static void VFilter16i_C(uint8_t* p, int stride,
                         int thresh, int ithresh, int hev_thresh) { … }
#endif  // !WEBP_NEON_OMIT_C_CODE

#if !WEBP_NEON_OMIT_C_CODE || WEBP_NEON_WORK_AROUND_GCC
static void HFilter16i_C(uint8_t* p, int stride,
                         int thresh, int ithresh, int hev_thresh) { … }
#endif  // !WEBP_NEON_OMIT_C_CODE || WEBP_NEON_WORK_AROUND_GCC

#if !WEBP_NEON_OMIT_C_CODE
// 8-pixels wide variant, for chroma filtering
static void VFilter8_C(uint8_t* u, uint8_t* v, int stride,
                       int thresh, int ithresh, int hev_thresh) { … }
#endif  // !WEBP_NEON_OMIT_C_CODE

#if !WEBP_NEON_OMIT_C_CODE || WEBP_NEON_WORK_AROUND_GCC
static void HFilter8_C(uint8_t* u, uint8_t* v, int stride,
                       int thresh, int ithresh, int hev_thresh) { … }
#endif  // !WEBP_NEON_OMIT_C_CODE || WEBP_NEON_WORK_AROUND_GCC

#if !WEBP_NEON_OMIT_C_CODE
static void VFilter8i_C(uint8_t* u, uint8_t* v, int stride,
                        int thresh, int ithresh, int hev_thresh) { … }
#endif  // !WEBP_NEON_OMIT_C_CODE

#if !WEBP_NEON_OMIT_C_CODE || WEBP_NEON_WORK_AROUND_GCC
static void HFilter8i_C(uint8_t* u, uint8_t* v, int stride,
                        int thresh, int ithresh, int hev_thresh) { … }
#endif  // !WEBP_NEON_OMIT_C_CODE || WEBP_NEON_WORK_AROUND_GCC

//------------------------------------------------------------------------------

static void DitherCombine8x8_C(const uint8_t* dither, uint8_t* dst,
                               int dst_stride) { … }

//------------------------------------------------------------------------------

VP8DecIdct2 VP8Transform;
VP8DecIdct VP8TransformAC3;
VP8DecIdct VP8TransformUV;
VP8DecIdct VP8TransformDC;
VP8DecIdct VP8TransformDCUV;

VP8LumaFilterFunc VP8VFilter16;
VP8LumaFilterFunc VP8HFilter16;
VP8ChromaFilterFunc VP8VFilter8;
VP8ChromaFilterFunc VP8HFilter8;
VP8LumaFilterFunc VP8VFilter16i;
VP8LumaFilterFunc VP8HFilter16i;
VP8ChromaFilterFunc VP8VFilter8i;
VP8ChromaFilterFunc VP8HFilter8i;
VP8SimpleFilterFunc VP8SimpleVFilter16;
VP8SimpleFilterFunc VP8SimpleHFilter16;
VP8SimpleFilterFunc VP8SimpleVFilter16i;
VP8SimpleFilterFunc VP8SimpleHFilter16i;

void (*VP8DitherCombine8x8)(const uint8_t* dither, uint8_t* dst,
                            int dst_stride);

extern VP8CPUInfo VP8GetCPUInfo;
extern void VP8DspInitSSE2(void);
extern void VP8DspInitSSE41(void);
extern void VP8DspInitNEON(void);
extern void VP8DspInitMIPS32(void);
extern void VP8DspInitMIPSdspR2(void);
extern void VP8DspInitMSA(void);

WEBP_DSP_INIT_FUNC(VP8DspInit) { … }
godot/thirdparty/libwebp/src/dsp/dec.c
