Update libjpeg-turbo to r722.

jdmerge.c

 /*
  * jdmerge.c
  *
  * Copyright (C) 1994-1996, Thomas G. Lane.
  * Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
- * Copyright (C) 2009, D. R. Commander.
+ * Copyright (C) 2009, 2011, D. R. Commander.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
  * This file contains code for merged upsampling/color conversion.
  *
  * This file combines functions from jdsample.c and jdcolor.c;
  * read those files first to understand what's going on.
  *
  * When the chroma components are to be upsampled by simple replication
  * (ie, box filtering), we can save some work in color conversion by
@@ skipping 53 matching lines @@
   JDIMENSION rows_to_go;        /* counts rows remaining in image */
 } my_upsampler;
 
 typedef my_upsampler * my_upsample_ptr;
 
 #define SCALEBITS       16      /* speediest right-shift on some machines */
 #define ONE_HALF        ((INT32) 1 << (SCALEBITS-1))
 #define FIX(x)          ((INT32) ((x) * (1L<<SCALEBITS) + 0.5))
 
 
+/* Include inline routines for colorspace extensions */
+
+#include "jdmrgext.c"
+#undef RGB_RED
+#undef RGB_GREEN
+#undef RGB_BLUE
+#undef RGB_PIXELSIZE
+
+#define RGB_RED EXT_RGB_RED
+#define RGB_GREEN EXT_RGB_GREEN
+#define RGB_BLUE EXT_RGB_BLUE
+#define RGB_PIXELSIZE EXT_RGB_PIXELSIZE
+#define h2v1_merged_upsample_internal extrgb_h2v1_merged_upsample_internal
+#define h2v2_merged_upsample_internal extrgb_h2v2_merged_upsample_internal
+#include "jdmrgext.c"
+#undef RGB_RED
+#undef RGB_GREEN
+#undef RGB_BLUE
+#undef RGB_PIXELSIZE
+#undef h2v1_merged_upsample_internal
+#undef h2v2_merged_upsample_internal
+
+#define RGB_RED EXT_RGBX_RED
+#define RGB_GREEN EXT_RGBX_GREEN
+#define RGB_BLUE EXT_RGBX_BLUE
+#define RGB_PIXELSIZE EXT_RGBX_PIXELSIZE
+#define h2v1_merged_upsample_internal extrgbx_h2v1_merged_upsample_internal
+#define h2v2_merged_upsample_internal extrgbx_h2v2_merged_upsample_internal
+#include "jdmrgext.c"
+#undef RGB_RED
+#undef RGB_GREEN
+#undef RGB_BLUE
+#undef RGB_PIXELSIZE
+#undef h2v1_merged_upsample_internal
+#undef h2v2_merged_upsample_internal
+
+#define RGB_RED EXT_BGR_RED
+#define RGB_GREEN EXT_BGR_GREEN
+#define RGB_BLUE EXT_BGR_BLUE
+#define RGB_PIXELSIZE EXT_BGR_PIXELSIZE
+#define h2v1_merged_upsample_internal extbgr_h2v1_merged_upsample_internal
+#define h2v2_merged_upsample_internal extbgr_h2v2_merged_upsample_internal
+#include "jdmrgext.c"
+#undef RGB_RED
+#undef RGB_GREEN
+#undef RGB_BLUE
+#undef RGB_PIXELSIZE
+#undef h2v1_merged_upsample_internal
+#undef h2v2_merged_upsample_internal
+
+#define RGB_RED EXT_BGRX_RED
+#define RGB_GREEN EXT_BGRX_GREEN
+#define RGB_BLUE EXT_BGRX_BLUE
+#define RGB_PIXELSIZE EXT_BGRX_PIXELSIZE
+#define h2v1_merged_upsample_internal extbgrx_h2v1_merged_upsample_internal
+#define h2v2_merged_upsample_internal extbgrx_h2v2_merged_upsample_internal
+#include "jdmrgext.c"
+#undef RGB_RED
+#undef RGB_GREEN
+#undef RGB_BLUE
+#undef RGB_PIXELSIZE
+#undef h2v1_merged_upsample_internal
+#undef h2v2_merged_upsample_internal
+
+#define RGB_RED EXT_XBGR_RED
+#define RGB_GREEN EXT_XBGR_GREEN
+#define RGB_BLUE EXT_XBGR_BLUE
+#define RGB_PIXELSIZE EXT_XBGR_PIXELSIZE
+#define h2v1_merged_upsample_internal extxbgr_h2v1_merged_upsample_internal
+#define h2v2_merged_upsample_internal extxbgr_h2v2_merged_upsample_internal
+#include "jdmrgext.c"
+#undef RGB_RED
+#undef RGB_GREEN
+#undef RGB_BLUE
+#undef RGB_PIXELSIZE
+#undef h2v1_merged_upsample_internal
+#undef h2v2_merged_upsample_internal
+
+#define RGB_RED EXT_XRGB_RED
+#define RGB_GREEN EXT_XRGB_GREEN
+#define RGB_BLUE EXT_XRGB_BLUE
+#define RGB_PIXELSIZE EXT_XRGB_PIXELSIZE
+#define h2v1_merged_upsample_internal extxrgb_h2v1_merged_upsample_internal
+#define h2v2_merged_upsample_internal extxrgb_h2v2_merged_upsample_internal
+#include "jdmrgext.c"
+#undef RGB_RED
+#undef RGB_GREEN
+#undef RGB_BLUE
+#undef RGB_PIXELSIZE
+#undef h2v1_merged_upsample_internal
+#undef h2v2_merged_upsample_internal
+
+
 /*
  * Initialize tables for YCC->RGB colorspace conversion.
  * This is taken directly from jdcolor.c; see that file for more info.
  */
 
 LOCAL(void)
 build_ycc_rgb_table (j_decompress_ptr cinfo)
 {
   my_upsample_ptr upsample = (my_upsample_ptr) cinfo->upsample;
   int i;
@@ skipping 133 matching lines @@
 
 /*
  * Upsample and color convert for the case of 2:1 horizontal and 1:1 vertical.
  */
 
 METHODDEF(void)
 h2v1_merged_upsample (j_decompress_ptr cinfo,
                       JSAMPIMAGE input_buf, JDIMENSION in_row_group_ctr,
                       JSAMPARRAY output_buf)
 {
-  my_upsample_ptr upsample = (my_upsample_ptr) cinfo->upsample;
-  register int y, cred, cgreen, cblue;
-  int cb, cr;
-  register JSAMPROW outptr;
-  JSAMPROW inptr0, inptr1, inptr2;
-  JDIMENSION col;
-  /* copy these pointers into registers if possible */
-  register JSAMPLE * range_limit = cinfo->sample_range_limit;
-  int * Crrtab = upsample->Cr_r_tab;
-  int * Cbbtab = upsample->Cb_b_tab;
-  INT32 * Crgtab = upsample->Cr_g_tab;
-  INT32 * Cbgtab = upsample->Cb_g_tab;
-  SHIFT_TEMPS
-
-  inptr0 = input_buf[0][in_row_group_ctr];
-  inptr1 = input_buf[1][in_row_group_ctr];
-  inptr2 = input_buf[2][in_row_group_ctr];
-  outptr = output_buf[0];
-  /* Loop for each pair of output pixels */
-  for (col = cinfo->output_width >> 1; col > 0; col--) {
-    /* Do the chroma part of the calculation */
-    cb = GETJSAMPLE(*inptr1++);
-    cr = GETJSAMPLE(*inptr2++);
-    cred = Crrtab[cr];
-    cgreen = (int) RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], SCALEBITS);
-    cblue = Cbbtab[cb];
-    /* Fetch 2 Y values and emit 2 pixels */
-    y  = GETJSAMPLE(*inptr0++);
-    outptr[rgb_red[cinfo->out_color_space]] =   range_limit[y + cred];
-    outptr[rgb_green[cinfo->out_color_space]] = range_limit[y + cgreen];
-    outptr[rgb_blue[cinfo->out_color_space]] =  range_limit[y + cblue];
-    outptr += rgb_pixelsize[cinfo->out_color_space];
-    y  = GETJSAMPLE(*inptr0++);
-    outptr[rgb_red[cinfo->out_color_space]] =   range_limit[y + cred];
-    outptr[rgb_green[cinfo->out_color_space]] = range_limit[y + cgreen];
-    outptr[rgb_blue[cinfo->out_color_space]] =  range_limit[y + cblue];
-    outptr += rgb_pixelsize[cinfo->out_color_space];
-  }
-  /* If image width is odd, do the last output column separately */
-  if (cinfo->output_width & 1) {
-    cb = GETJSAMPLE(*inptr1);
-    cr = GETJSAMPLE(*inptr2);
-    cred = Crrtab[cr];
-    cgreen = (int) RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], SCALEBITS);
-    cblue = Cbbtab[cb];
-    y  = GETJSAMPLE(*inptr0);
-    outptr[rgb_red[cinfo->out_color_space]] =   range_limit[y + cred];
-    outptr[rgb_green[cinfo->out_color_space]] = range_limit[y + cgreen];
-    outptr[rgb_blue[cinfo->out_color_space]] =  range_limit[y + cblue];
+  switch (cinfo->out_color_space) {
+    case JCS_EXT_RGB:
+      extrgb_h2v1_merged_upsample_internal(cinfo, input_buf, in_row_group_ctr,
+                                           output_buf);
+      break;
+    case JCS_EXT_RGBX:
+      extrgbx_h2v1_merged_upsample_internal(cinfo, input_buf, in_row_group_ctr,
+                                            output_buf);
+      break;
+    case JCS_EXT_BGR:
+      extbgr_h2v1_merged_upsample_internal(cinfo, input_buf, in_row_group_ctr,
+                                           output_buf);
+      break;
+    case JCS_EXT_BGRX:
+      extbgrx_h2v1_merged_upsample_internal(cinfo, input_buf, in_row_group_ctr,
+                                            output_buf);
+      break;
+    case JCS_EXT_XBGR:
+      extxbgr_h2v1_merged_upsample_internal(cinfo, input_buf, in_row_group_ctr,
+                                            output_buf);
+      break;
+    case JCS_EXT_XRGB:
+      extxrgb_h2v1_merged_upsample_internal(cinfo, input_buf, in_row_group_ctr,
+                                            output_buf);
+      break;
+    default:
+      h2v1_merged_upsample_internal(cinfo, input_buf, in_row_group_ctr,
+                                    output_buf);
+      break;
   }
 }
 
 
 /*
  * Upsample and color convert for the case of 2:1 horizontal and 2:1 vertical.
  */
 
 METHODDEF(void)
 h2v2_merged_upsample (j_decompress_ptr cinfo,
                       JSAMPIMAGE input_buf, JDIMENSION in_row_group_ctr,
                       JSAMPARRAY output_buf)
 {
-  my_upsample_ptr upsample = (my_upsample_ptr) cinfo->upsample;
-  register int y, cred, cgreen, cblue;
-  int cb, cr;
-  register JSAMPROW outptr0, outptr1;
-  JSAMPROW inptr00, inptr01, inptr1, inptr2;
-  JDIMENSION col;
-  /* copy these pointers into registers if possible */
-  register JSAMPLE * range_limit = cinfo->sample_range_limit;
-  int * Crrtab = upsample->Cr_r_tab;
-  int * Cbbtab = upsample->Cb_b_tab;
-  INT32 * Crgtab = upsample->Cr_g_tab;
-  INT32 * Cbgtab = upsample->Cb_g_tab;
-  SHIFT_TEMPS
-
-  inptr00 = input_buf[0][in_row_group_ctr*2];
-  inptr01 = input_buf[0][in_row_group_ctr*2 + 1];
-  inptr1 = input_buf[1][in_row_group_ctr];
-  inptr2 = input_buf[2][in_row_group_ctr];
-  outptr0 = output_buf[0];
-  outptr1 = output_buf[1];
-  /* Loop for each group of output pixels */
-  for (col = cinfo->output_width >> 1; col > 0; col--) {
-    /* Do the chroma part of the calculation */
-    cb = GETJSAMPLE(*inptr1++);
-    cr = GETJSAMPLE(*inptr2++);
-    cred = Crrtab[cr];
-    cgreen = (int) RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], SCALEBITS);
-    cblue = Cbbtab[cb];
-    /* Fetch 4 Y values and emit 4 pixels */
-    y  = GETJSAMPLE(*inptr00++);
-    outptr0[rgb_red[cinfo->out_color_space]] =   range_limit[y + cred];
-    outptr0[rgb_green[cinfo->out_color_space]] = range_limit[y + cgreen];
-    outptr0[rgb_blue[cinfo->out_color_space]] =  range_limit[y + cblue];
-    outptr0 += RGB_PIXELSIZE;
-    y  = GETJSAMPLE(*inptr00++);
-    outptr0[rgb_red[cinfo->out_color_space]] =   range_limit[y + cred];
-    outptr0[rgb_green[cinfo->out_color_space]] = range_limit[y + cgreen];
-    outptr0[rgb_blue[cinfo->out_color_space]] =  range_limit[y + cblue];
-    outptr0 += RGB_PIXELSIZE;
-    y  = GETJSAMPLE(*inptr01++);
-    outptr1[rgb_red[cinfo->out_color_space]] =   range_limit[y + cred];
-    outptr1[rgb_green[cinfo->out_color_space]] = range_limit[y + cgreen];
-    outptr1[rgb_blue[cinfo->out_color_space]] =  range_limit[y + cblue];
-    outptr1 += RGB_PIXELSIZE;
-    y  = GETJSAMPLE(*inptr01++);
-    outptr1[rgb_red[cinfo->out_color_space]] =   range_limit[y + cred];
-    outptr1[rgb_green[cinfo->out_color_space]] = range_limit[y + cgreen];
-    outptr1[rgb_blue[cinfo->out_color_space]] =  range_limit[y + cblue];
-    outptr1 += RGB_PIXELSIZE;
-  }
-  /* If image width is odd, do the last output column separately */
-  if (cinfo->output_width & 1) {
-    cb = GETJSAMPLE(*inptr1);
-    cr = GETJSAMPLE(*inptr2);
-    cred = Crrtab[cr];
-    cgreen = (int) RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], SCALEBITS);
-    cblue = Cbbtab[cb];
-    y  = GETJSAMPLE(*inptr00);
-    outptr0[rgb_red[cinfo->out_color_space]] =   range_limit[y + cred];
-    outptr0[rgb_green[cinfo->out_color_space]] = range_limit[y + cgreen];
-    outptr0[rgb_blue[cinfo->out_color_space]] =  range_limit[y + cblue];
-    y  = GETJSAMPLE(*inptr01);
-    outptr1[rgb_red[cinfo->out_color_space]] =   range_limit[y + cred];
-    outptr1[rgb_green[cinfo->out_color_space]] = range_limit[y + cgreen];
-    outptr1[rgb_blue[cinfo->out_color_space]] =  range_limit[y + cblue];
+  switch (cinfo->out_color_space) {
+    case JCS_EXT_RGB:
+      extrgb_h2v2_merged_upsample_internal(cinfo, input_buf, in_row_group_ctr,
+                                           output_buf);
+      break;
+    case JCS_EXT_RGBX:
+      extrgbx_h2v2_merged_upsample_internal(cinfo, input_buf, in_row_group_ctr,
+                                            output_buf);
+      break;
+    case JCS_EXT_BGR:
+      extbgr_h2v2_merged_upsample_internal(cinfo, input_buf, in_row_group_ctr,
+                                           output_buf);
+      break;
+    case JCS_EXT_BGRX:
+      extbgrx_h2v2_merged_upsample_internal(cinfo, input_buf, in_row_group_ctr,
+                                            output_buf);
+      break;
+    case JCS_EXT_XBGR:
+      extxbgr_h2v2_merged_upsample_internal(cinfo, input_buf, in_row_group_ctr,
+                                            output_buf);
+      break;
+    case JCS_EXT_XRGB:
+      extxrgb_h2v2_merged_upsample_internal(cinfo, input_buf, in_row_group_ctr,
+                                            output_buf);
+      break;
+    default:
+      h2v2_merged_upsample_internal(cinfo, input_buf, in_row_group_ctr,
+                                    output_buf);
+      break;
   }
 }
 
 
 /*
  * Module initialization routine for merged upsampling/color conversion.
  *
  * NB: this is called under the conditions determined by use_merged_upsample()
  * in jdmaster.c.  That routine MUST correspond to the actual capabilities
  * of this module; no safety checks are made here.
@@ skipping 30 matching lines @@
     else
       upsample->upmethod = h2v1_merged_upsample;
     /* No spare row needed */
     upsample->spare_row = NULL;
   }
 
   build_ycc_rgb_table(cinfo);
 }
 
 #endif /* UPSAMPLE_MERGING_SUPPORTED */