io_dec.c | Explore in Territory

// 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.
// -----------------------------------------------------------------------------
//
// functions for sample output.
//
// Author: Skal ([email protected])

#include <assert.h>
#include <stdlib.h>
#include "src/dec/vp8i_dec.h"
#include "src/dec/webpi_dec.h"
#include "src/dsp/dsp.h"
#include "src/dsp/yuv.h"
#include "src/utils/utils.h"

//------------------------------------------------------------------------------
// Main YUV<->RGB conversion functions

static int EmitYUV(const VP8Io* const io, WebPDecParams* const p) { … }

// Point-sampling U/V sampler.
static int EmitSampledRGB(const VP8Io* const io, WebPDecParams* const p) { … }

//------------------------------------------------------------------------------
// Fancy upsampling

#ifdef FANCY_UPSAMPLING
static int EmitFancyRGB(const VP8Io* const io, WebPDecParams* const p) { … }

#endif    /* FANCY_UPSAMPLING */

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

static void FillAlphaPlane(uint8_t* dst, int w, int h, int stride) { … }

static int EmitAlphaYUV(const VP8Io* const io, WebPDecParams* const p,
                        int expected_num_lines_out) { … }

static int GetAlphaSourceRow(const VP8Io* const io,
                             const uint8_t** alpha, int* const num_rows) { … }

static int EmitAlphaRGB(const VP8Io* const io, WebPDecParams* const p,
                        int expected_num_lines_out) { … }

static int EmitAlphaRGBA4444(const VP8Io* const io, WebPDecParams* const p,
                             int expected_num_lines_out) { … }

//------------------------------------------------------------------------------
// YUV rescaling (no final RGB conversion needed)

#if !defined(WEBP_REDUCE_SIZE)
static int Rescale(const uint8_t* src, int src_stride,
                   int new_lines, WebPRescaler* const wrk) { … }

static int EmitRescaledYUV(const VP8Io* const io, WebPDecParams* const p) { … }

static int EmitRescaledAlphaYUV(const VP8Io* const io, WebPDecParams* const p,
                                int expected_num_lines_out) { … }

static int InitYUVRescaler(const VP8Io* const io, WebPDecParams* const p) { … }

//------------------------------------------------------------------------------
// RGBA rescaling

static int ExportRGB(WebPDecParams* const p, int y_pos) { … }

static int EmitRescaledRGB(const VP8Io* const io, WebPDecParams* const p) { … }

static int ExportAlpha(WebPDecParams* const p, int y_pos, int max_lines_out) { … }

static int ExportAlphaRGBA4444(WebPDecParams* const p, int y_pos,
                               int max_lines_out) { … }

static int EmitRescaledAlphaRGB(const VP8Io* const io, WebPDecParams* const p,
                                int expected_num_out_lines) { … }

static int InitRGBRescaler(const VP8Io* const io, WebPDecParams* const p) { … }

#endif  // WEBP_REDUCE_SIZE

//------------------------------------------------------------------------------
// Default custom functions

static int CustomSetup(VP8Io* io) { … }

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

static int CustomPut(const VP8Io* io) { … }

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

static void CustomTeardown(const VP8Io* io) { … }

//------------------------------------------------------------------------------
// Main entry point

void WebPInitCustomIo(WebPDecParams* const params, VP8Io* const io) { … }

//------------------------------------------------------------------------------
godot/thirdparty/libwebp/src/dec/io_dec.c
