libv4l: rewrite video processing code

From: Hans de Goede <hdegoede@redhat.com>

Rewrite video processing code to make it easier to add more video filters
(and with little extra processing cost). As part of this the normalize
filter has been removed as it wasn't functioning satisfactory anyways

Priority: normal

Signed-off-by: Hans de Goede <hdegoede@redhat.com>

1 files changed, 0 insertions, 244 deletions

diff --git a/v4l2-apps/libv4l/libv4lconvert/processing/bayerprocessing.c b/v4l2-apps/libv4l/libv4lconvert/processing/bayerprocessing.c
deleted file mode 100644
index f4cc9922b..000000000
--- a/v4l2-apps/libv4l/libv4lconvert/processing/bayerprocessing.c
+++ /dev/null
@@ -1,244 +0,0 @@
-/*
-#             (C) 2008-2009 Elmar Kleijn <elmar_kleijn@hotmail.com>
-#             (C) 2008-2009 Sjoerd Piepenbrink <need4weed@gmail.com>
-#             (C) 2008-2009 Hans de Goede <hdegoede@redhat.com>
-
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU Lesser General Public License as published by
-# the Free Software Foundation; either version 2.1 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Lesser General Public License for more details.
-#
-# You should have received a copy of the GNU Lesser General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
-*/
-
-#include "libv4lprocessing-priv.h"
-#include "../libv4lconvert-priv.h" /* for PIX_FMT defines */
-
-void bayer_normalize_analyse(unsigned char *buf, int width, int height,
-  struct v4lprocessing_data *data)
-{
-  int value, max = 0, min = 255;
-  unsigned char *buf_end = buf + width * height;
-
-  while (buf < buf_end) {
-    value = *buf++;
-    if (max < value)
-      max = value;
-    if (min > value)
-      min = value;
-  }
-
-  data->comp1 = ((data->norm_high_bound - data->norm_low_bound) << 16) / (max - min);
-  data->offset1 = min;
-  data->offset2 = data->norm_low_bound;
-}
-
-void bayer_whitebalance_analyse(unsigned char *src_buffer, int width,
-  int height, unsigned int pix_fmt, struct v4lprocessing_data *data)
-{
-  int i, j, x1 = 0, x2 = 0, y1 = 0, y2 = 0;
-  float green_avg, x_avg, y_avg, avg_avg;
-  unsigned char *buf = src_buffer;
-
-  int start_with_green = pix_fmt == V4L2_PIX_FMT_SGBRG8 ||
-    pix_fmt == V4L2_PIX_FMT_SGRBG8;
-
-  for (i = 0; i < height; i += 2) {
-    for (j = 0; j < width; j += 2) {
-      x1 += *buf++;
-      x2 += *buf++;
-    }
-    for (j = 0; j < width; j += 2) {
-      y1 += *buf++;
-      y2 += *buf++;
-    }
-  }
-
-  if (start_with_green) {
-    green_avg = (x1 + y2) / 2;
-    x_avg = x2;
-    y_avg = y1;
-  } else {
-    green_avg = (x2 + y1) / 2;
-    x_avg = x1;
-    y_avg = y2;
-  }
-
-  avg_avg = (green_avg + x_avg + y_avg) / 3;
-
-  data->comp1 = (avg_avg / green_avg) * 65536;
-  data->comp2 = (avg_avg / x_avg) * 65536;
-  data->comp3 = (avg_avg / y_avg) * 65536;
-}
-
-void bayer_normalize_whitebalance_analyse(unsigned char *buf, int width,
-  int height, unsigned int pix_fmt, struct v4lprocessing_data *data)
-{
-  int i, j, value, max = 0, min = 255, n_fac, x1 = 0, x2 = 0, y1 = 0, y2 = 0;
-  float green_avg, x_avg, y_avg, avg_avg;
-
-  int start_with_green = pix_fmt == V4L2_PIX_FMT_SGBRG8 ||
-    pix_fmt == V4L2_PIX_FMT_SGRBG8;
-
-  for (i = 0; i < height; i += 2) {
-    for (j = 0; j < width; j += 2) {
-      x1 += *buf;
-      value = *buf++;
-      if (max < value)
-	max = value;
-      if (min > value)
-	min = value;
-      x2 += *buf;
-      value = *buf++;
-      if (max < value)
-	max = value;
-      if (min > value)
-	min = value;
-    }
-    for (j = 0; j < width; j += 2) {
-      y1 += *buf;
-      value = *buf++;
-      if (max < value)
-	max = value;
-      if (min > value)
-	min = value;
-      y2 += *buf;
-      value = *buf++;
-      if (max < value)
-	max = value;
-      if (min > value)
-	min = value;
-    }
-  }
-
-  if (start_with_green) {
-    green_avg = (x1 + y2) / 2;
-    x_avg = x2;
-    y_avg = y1;
-  } else {
-    green_avg = (x2 + y1) / 2;
-    x_avg = x1;
-    y_avg = y2;
-  }
-
-  n_fac = ((data->norm_high_bound - data->norm_low_bound) << 16) / (max - min);
-
-  avg_avg = (green_avg + x_avg + y_avg) / 3;
-
-  data->comp1 = (avg_avg / green_avg) * n_fac;
-  data->comp2 = (avg_avg / x_avg) * n_fac;
-  data->comp3 = (avg_avg / y_avg) * n_fac;
-
-  data->offset1 = min;
-  data->offset2 = data->norm_low_bound;
-}
-
-#define CLIP(color) (unsigned char)(((color)>0xff)?0xff:(((color)<0)?0:(color)))
-#define TOP(color) (unsigned char)(((color)>0xff)?0xff:(color))
-
-void bayer_normalize(unsigned char *buf, int width,
-  int height, struct v4lprocessing_data *data)
-{
-  int value;
-  unsigned char *buf_end = buf + width * height;
-
-  while (buf < buf_end) {
-    value = ((data->comp1 * (*buf - data->offset1)) >> 16) + data->offset2;
-    *buf++ = CLIP(value);
-  }
-}
-
-void bayer_whitebalance(unsigned char *src_buffer, int width,
-  int height, unsigned int pix_fmt,
-  struct v4lprocessing_data *data)
-{
-  int i, j, value;
-  int limit = width * height;
-  unsigned char *buf = src_buffer;
-
-  int start_with_green = pix_fmt == V4L2_PIX_FMT_SGBRG8 ||
-    pix_fmt == V4L2_PIX_FMT_SGRBG8;
-
-  if (start_with_green) {
-    for (i = 0; i < height; i += 2) {
-      for (j = 0; j < width; j += 2) {
-	value = (*buf * data->comp1) >> 16;
-	*buf++ = TOP(value);
-	value = (*buf * data->comp2) >> 16;
-	*buf++ = TOP(value);
-      }
-      for (j = 0; j < width; j += 2) {
-	value = (*buf * data->comp3) >> 16;
-	*buf++ = TOP(value);
-	value = (*buf * data->comp1) >> 16;
-	*buf++ = TOP(value);
-      }
-    }
-  } else {
-    for (i = 0; i < height; i += 2) {
-      for (j = 0; j < width; j += 2) {
-	value = (*buf * data->comp2) >> 16;
-	*buf++ = TOP(value);
-	value = (*buf * data->comp1) >> 16;
-	*buf++ = TOP(value);
-      }
-      for (j = 0; j < width; j += 2) {
-	value = (*buf * data->comp1) >> 16;
-	*buf++ = TOP(value);
-	value = (*buf * data->comp3) >> 16;
-	*buf++ = TOP(value);
-      }
-    }
-  }
-}
-
-void bayer_normalize_whitebalance(unsigned char *src_buffer, int width,
-  int height, unsigned int pix_fmt,
-  struct v4lprocessing_data *data)
-{
-  int i, j, value;
-  int limit = width * height;
-  unsigned char *buf = src_buffer;
-
-  int start_with_green = pix_fmt == V4L2_PIX_FMT_SGBRG8 ||
-    pix_fmt == V4L2_PIX_FMT_SGRBG8;
-
-  if (start_with_green) {
-    for (i = 0; i < height; i += 2) {
-      for (j = 0; j < width; j += 2) {
-	value = ((data->comp1 * (*buf - data->offset1)) >> 16) + data->offset2;
-	*buf++ = CLIP(value);
-	value = ((data->comp2 * (*buf - data->offset1)) >> 16) + data->offset2;
-	*buf++ = CLIP(value);
-      }
-      for (j = 0; j < width; j += 2) {
-	value = ((data->comp3 * (*buf - data->offset1)) >> 16) + data->offset2;
-	*buf++ = CLIP(value);
-	value = ((data->comp1 * (*buf - data->offset1)) >> 16) + data->offset2;
-	*buf++ = CLIP(value);
-      }
-    }
-  } else {
-    for (i = 0; i < height; i += 2) {
-      for (j = 0; j < width; j += 2) {
-	value = ((data->comp2 * (*buf - data->offset1)) >> 16) + data->offset2;
-	*buf++ = CLIP(value);
-	value = ((data->comp1 * (*buf - data->offset1)) >> 16) + data->offset2;
-	*buf++ = CLIP(value);
-      }
-      for (j = 0; j < width; j += 2) {
-	value = ((data->comp1 * (*buf - data->offset1)) >> 16) + data->offset2;
-	*buf++ = CLIP(value);
-	value = ((data->comp3 * (*buf - data->offset1)) >> 16) + data->offset2;
-	*buf++ = CLIP(value);
-      }
-    }
-  }
-}