1 files changed, 0 insertions, 330 deletions

diff --git a/drivers/webpold/enc/alpha.c b/drivers/webpold/enc/alpha.c
deleted file mode 100644
index e554eb7f30..0000000000
--- a/drivers/webpold/enc/alpha.c
+++ /dev/null
@@ -1,330 +0,0 @@
-// 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/
-// -----------------------------------------------------------------------------
-//
-// Alpha-plane compression.
-//
-// Author: Skal (pascal.massimino@gmail.com)
-
-#include <assert.h>
-#include <stdlib.h>
-
-#include "./vp8enci.h"
-#include "../utils/filters.h"
-#include "../utils/quant_levels.h"
-#include "../format_constants.h"
-
-#if defined(__cplusplus) || defined(c_plusplus)
-extern "C" {
-#endif
-
-// -----------------------------------------------------------------------------
-// Encodes the given alpha data via specified compression method 'method'.
-// The pre-processing (quantization) is performed if 'quality' is less than 100.
-// For such cases, the encoding is lossy. The valid range is [0, 100] for
-// 'quality' and [0, 1] for 'method':
-//   'method = 0' - No compression;
-//   'method = 1' - Use lossless coder on the alpha plane only
-// 'filter' values [0, 4] correspond to prediction modes none, horizontal,
-// vertical & gradient filters. The prediction mode 4 will try all the
-// prediction modes 0 to 3 and pick the best one.
-// 'effort_level': specifies how much effort must be spent to try and reduce
-//  the compressed output size. In range 0 (quick) to 6 (slow).
-//
-// 'output' corresponds to the buffer containing compressed alpha data.
-//          This buffer is allocated by this method and caller should call
-//          free(*output) when done.
-// 'output_size' corresponds to size of this compressed alpha buffer.
-//
-// Returns 1 on successfully encoding the alpha and
-//         0 if either:
-//           invalid quality or method, or
-//           memory allocation for the compressed data fails.
-
-#include "../enc/vp8li.h"
-
-static int EncodeLossless(const uint8_t* const data, int width, int height,
-                          int effort_level,  // in [0..6] range
-                          VP8BitWriter* const bw,
-                          WebPAuxStats* const stats) {
-  int ok = 0;
-  WebPConfig config;
-  WebPPicture picture;
-  VP8LBitWriter tmp_bw;
-
-  WebPPictureInit(&picture);
-  picture.width = width;
-  picture.height = height;
-  picture.use_argb = 1;
-  picture.stats = stats;
-  if (!WebPPictureAlloc(&picture)) return 0;
-
-  // Transfer the alpha values to the green channel.
-  {
-    int i, j;
-    uint32_t* dst = picture.argb;
-    const uint8_t* src = data;
-    for (j = 0; j < picture.height; ++j) {
-      for (i = 0; i < picture.width; ++i) {
-        dst[i] = (src[i] << 8) | 0xff000000u;
-      }
-      src += width;
-      dst += picture.argb_stride;
-    }
-  }
-
-  WebPConfigInit(&config);
-  config.lossless = 1;
-  config.method = effort_level;  // impact is very small
-  // Set moderate default quality setting for alpha. Higher qualities (80 and
-  // above) could be very slow.
-  config.quality = 10.f + 15.f * effort_level;
-  if (config.quality > 100.f) config.quality = 100.f;
-
-  ok = VP8LBitWriterInit(&tmp_bw, (width * height) >> 3);
-  ok = ok && (VP8LEncodeStream(&config, &picture, &tmp_bw) == VP8_ENC_OK);
-  WebPPictureFree(&picture);
-  if (ok) {
-    const uint8_t* const data = VP8LBitWriterFinish(&tmp_bw);
-    const size_t data_size = VP8LBitWriterNumBytes(&tmp_bw);
-    VP8BitWriterAppend(bw, data, data_size);
-  }
-  VP8LBitWriterDestroy(&tmp_bw);
-  return ok && !bw->error_;
-}
-
-// -----------------------------------------------------------------------------
-
-static int EncodeAlphaInternal(const uint8_t* const data, int width, int height,
-                               int method, int filter, int reduce_levels,
-                               int effort_level,  // in [0..6] range
-                               uint8_t* const tmp_alpha,
-                               VP8BitWriter* const bw,
-                               WebPAuxStats* const stats) {
-  int ok = 0;
-  const uint8_t* alpha_src;
-  WebPFilterFunc filter_func;
-  uint8_t header;
-  size_t expected_size;
-  const size_t data_size = width * height;
-
-  assert((uint64_t)data_size == (uint64_t)width * height);  // as per spec
-  assert(filter >= 0 && filter < WEBP_FILTER_LAST);
-  assert(method >= ALPHA_NO_COMPRESSION);
-  assert(method <= ALPHA_LOSSLESS_COMPRESSION);
-  assert(sizeof(header) == ALPHA_HEADER_LEN);
-  // TODO(skal): have a common function and #define's to validate alpha params.
-
-  expected_size =
-      (method == ALPHA_NO_COMPRESSION) ? (ALPHA_HEADER_LEN + data_size)
-                                       : (data_size >> 5);
-  header = method | (filter << 2);
-  if (reduce_levels) header |= ALPHA_PREPROCESSED_LEVELS << 4;
-
-  VP8BitWriterInit(bw, expected_size);
-  VP8BitWriterAppend(bw, &header, ALPHA_HEADER_LEN);
-
-  filter_func = WebPFilters[filter];
-  if (filter_func) {
-    filter_func(data, width, height, 1, width, tmp_alpha);
-    alpha_src = tmp_alpha;
-  }  else {
-    alpha_src = data;
-  }
-
-  if (method == ALPHA_NO_COMPRESSION) {
-    ok = VP8BitWriterAppend(bw, alpha_src, width * height);
-    ok = ok && !bw->error_;
-  } else {
-    ok = EncodeLossless(alpha_src, width, height, effort_level, bw, stats);
-    VP8BitWriterFinish(bw);
-  }
-  return ok;
-}
-
-// -----------------------------------------------------------------------------
-
-// TODO(skal): move to dsp/ ?
-static void CopyPlane(const uint8_t* src, int src_stride,
-                      uint8_t* dst, int dst_stride, int width, int height) {
-  while (height-- > 0) {
-    memcpy(dst, src, width);
-    src += src_stride;
-    dst += dst_stride;
-  }
-}
-
-static int EncodeAlpha(VP8Encoder* const enc,
-                       int quality, int method, int filter,
-                       int effort_level,
-                       uint8_t** const output, size_t* const output_size) {
-  const WebPPicture* const pic = enc->pic_;
-  const int width = pic->width;
-  const int height = pic->height;
-
-  uint8_t* quant_alpha = NULL;
-  const size_t data_size = width * height;
-  uint64_t sse = 0;
-  int ok = 1;
-  const int reduce_levels = (quality < 100);
-
-  // quick sanity checks
-  assert((uint64_t)data_size == (uint64_t)width * height);  // as per spec
-  assert(enc != NULL && pic != NULL && pic->a != NULL);
-  assert(output != NULL && output_size != NULL);
-  assert(width > 0 && height > 0);
-  assert(pic->a_stride >= width);
-  assert(filter >= WEBP_FILTER_NONE && filter <= WEBP_FILTER_FAST);
-
-  if (quality < 0 || quality > 100) {
-    return 0;
-  }
-
-  if (method < ALPHA_NO_COMPRESSION || method > ALPHA_LOSSLESS_COMPRESSION) {
-    return 0;
-  }
-
-  quant_alpha = (uint8_t*)malloc(data_size);
-  if (quant_alpha == NULL) {
-    return 0;
-  }
-
-  // Extract alpha data (width x height) from raw_data (stride x height).
-  CopyPlane(pic->a, pic->a_stride, quant_alpha, width, width, height);
-
-  if (reduce_levels) {  // No Quantization required for 'quality = 100'.
-    // 16 alpha levels gives quite a low MSE w.r.t original alpha plane hence
-    // mapped to moderate quality 70. Hence Quality:[0, 70] -> Levels:[2, 16]
-    // and Quality:]70, 100] -> Levels:]16, 256].
-    const int alpha_levels = (quality <= 70) ? (2 + quality / 5)
-                                             : (16 + (quality - 70) * 8);
-    ok = QuantizeLevels(quant_alpha, width, height, alpha_levels, &sse);
-  }
-
-  if (ok) {
-    VP8BitWriter bw;
-    int test_filter;
-    uint8_t* filtered_alpha = NULL;
-
-    // We always test WEBP_FILTER_NONE first.
-    ok = EncodeAlphaInternal(quant_alpha, width, height,
-                             method, WEBP_FILTER_NONE, reduce_levels,
-                             effort_level, NULL, &bw, pic->stats);
-    if (!ok) {
-      VP8BitWriterWipeOut(&bw);
-      goto End;
-    }
-
-    if (filter == WEBP_FILTER_FAST) {  // Quick estimate of a second candidate?
-      filter = EstimateBestFilter(quant_alpha, width, height, width);
-    }
-    // Stop?
-    if (filter == WEBP_FILTER_NONE) {
-      goto Ok;
-    }
-
-    filtered_alpha = (uint8_t*)malloc(data_size);
-    ok = (filtered_alpha != NULL);
-    if (!ok) {
-      goto End;
-    }
-
-    // Try the other mode(s).
-    {
-      WebPAuxStats best_stats;
-      size_t best_score = VP8BitWriterSize(&bw);
-
-      memset(&best_stats, 0, sizeof(best_stats));  // prevent spurious warning
-      if (pic->stats != NULL) best_stats = *pic->stats;
-      for (test_filter = WEBP_FILTER_HORIZONTAL;
-           ok && (test_filter <= WEBP_FILTER_GRADIENT);
-           ++test_filter) {
-        VP8BitWriter tmp_bw;
-        if (filter != WEBP_FILTER_BEST && test_filter != filter) {
-          continue;
-        }
-        ok = EncodeAlphaInternal(quant_alpha, width, height,
-                                 method, test_filter, reduce_levels,
-                                 effort_level, filtered_alpha, &tmp_bw,
-                                 pic->stats);
-        if (ok) {
-          const size_t score = VP8BitWriterSize(&tmp_bw);
-          if (score < best_score) {
-            // swap bitwriter objects.
-            VP8BitWriter tmp = tmp_bw;
-            tmp_bw = bw;
-            bw = tmp;
-            best_score = score;
-            if (pic->stats != NULL) best_stats = *pic->stats;
-          }
-        } else {
-          VP8BitWriterWipeOut(&bw);
-        }
-        VP8BitWriterWipeOut(&tmp_bw);
-      }
-      if (pic->stats != NULL) *pic->stats = best_stats;
-    }
- Ok:
-    if (ok) {
-      *output_size = VP8BitWriterSize(&bw);
-      *output = VP8BitWriterBuf(&bw);
-      if (pic->stats != NULL) {         // need stats?
-        pic->stats->coded_size += (int)(*output_size);
-        enc->sse_[3] = sse;
-      }
-    }
-    free(filtered_alpha);
-  }
- End:
-  free(quant_alpha);
-  return ok;
-}
-
-
-//------------------------------------------------------------------------------
-// Main calls
-
-void VP8EncInitAlpha(VP8Encoder* const enc) {
-  enc->has_alpha_ = WebPPictureHasTransparency(enc->pic_);
-  enc->alpha_data_ = NULL;
-  enc->alpha_data_size_ = 0;
-}
-
-int VP8EncFinishAlpha(VP8Encoder* const enc) {
-  if (enc->has_alpha_) {
-    const WebPConfig* config = enc->config_;
-    uint8_t* tmp_data = NULL;
-    size_t tmp_size = 0;
-    const int effort_level = config->method;  // maps to [0..6]
-    const WEBP_FILTER_TYPE filter =
-        (config->alpha_filtering == 0) ? WEBP_FILTER_NONE :
-        (config->alpha_filtering == 1) ? WEBP_FILTER_FAST :
-                                         WEBP_FILTER_BEST;
-
-    if (!EncodeAlpha(enc, config->alpha_quality, config->alpha_compression,
-                     filter, effort_level, &tmp_data, &tmp_size)) {
-      return 0;
-    }
-    if (tmp_size != (uint32_t)tmp_size) {  // Sanity check.
-      free(tmp_data);
-      return 0;
-    }
-    enc->alpha_data_size_ = (uint32_t)tmp_size;
-    enc->alpha_data_ = tmp_data;
-  }
-  return WebPReportProgress(enc->pic_, enc->percent_ + 20, &enc->percent_);
-}
-
-void VP8EncDeleteAlpha(VP8Encoder* const enc) {
-  free(enc->alpha_data_);
-  enc->alpha_data_ = NULL;
-  enc->alpha_data_size_ = 0;
-  enc->has_alpha_ = 0;
-}
-
-#if defined(__cplusplus) || defined(c_plusplus)
-}    // extern "C"
-#endif