Update to libjpeg_turbo 1.4.90
(Duplicate of https://codereview.chromium.org/1939823002/ for landing.)
TBR=noel@chromium.org,thakis@chromium.org
BUG=608347, 398235, 591927
Review URL: https://codereview.chromium.org/1953443002 .
diff --git a/rdtarga.c b/rdtarga.c
index 4c2cd26..b9bbd07 100644
--- a/rdtarga.c
+++ b/rdtarga.c
@@ -1,9 +1,12 @@
/*
* rdtarga.c
*
+ * This file was part of the Independent JPEG Group's software:
* Copyright (C) 1991-1996, Thomas G. Lane.
- * This file is part of the Independent JPEG Group's software.
- * For conditions of distribution and use, see the accompanying README file.
+ * It was modified by The libjpeg-turbo Project to include only code relevant
+ * to libjpeg-turbo.
+ * For conditions of distribution and use, see the accompanying README.ijg
+ * file.
*
* This file contains routines to read input images in Targa format.
*
@@ -17,7 +20,7 @@
* Based on code contributed by Lee Daniel Crocker.
*/
-#include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */
+#include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */
#ifdef TARGA_SUPPORTED
@@ -26,50 +29,49 @@
#ifdef HAVE_UNSIGNED_CHAR
typedef unsigned char U_CHAR;
-#define UCH(x) ((int) (x))
+#define UCH(x) ((int) (x))
#else /* !HAVE_UNSIGNED_CHAR */
-#ifdef CHAR_IS_UNSIGNED
+#ifdef __CHAR_UNSIGNED__
typedef char U_CHAR;
-#define UCH(x) ((int) (x))
+#define UCH(x) ((int) (x))
#else
typedef char U_CHAR;
-#define UCH(x) ((int) (x) & 0xFF)
+#define UCH(x) ((int) (x) & 0xFF)
#endif
#endif /* HAVE_UNSIGNED_CHAR */
-#define ReadOK(file,buffer,len) (JFREAD(file,buffer,len) == ((size_t) (len)))
+#define ReadOK(file,buffer,len) (JFREAD(file,buffer,len) == ((size_t) (len)))
/* Private version of data source object */
-typedef struct _tga_source_struct * tga_source_ptr;
+typedef struct _tga_source_struct *tga_source_ptr;
typedef struct _tga_source_struct {
struct cjpeg_source_struct pub; /* public fields */
- j_compress_ptr cinfo; /* back link saves passing separate parm */
+ j_compress_ptr cinfo; /* back link saves passing separate parm */
- JSAMPARRAY colormap; /* Targa colormap (converted to my format) */
+ JSAMPARRAY colormap; /* Targa colormap (converted to my format) */
- jvirt_sarray_ptr whole_image; /* Needed if funny input row order */
- JDIMENSION current_row; /* Current logical row number to read */
+ jvirt_sarray_ptr whole_image; /* Needed if funny input row order */
+ JDIMENSION current_row; /* Current logical row number to read */
/* Pointer to routine to extract next Targa pixel from input file */
- JMETHOD(void, read_pixel, (tga_source_ptr sinfo));
+ void (*read_pixel) (tga_source_ptr sinfo);
/* Result of read_pixel is delivered here: */
U_CHAR tga_pixel[4];
- int pixel_size; /* Bytes per Targa pixel (1 to 4) */
+ int pixel_size; /* Bytes per Targa pixel (1 to 4) */
/* State info for reading RLE-coded pixels; both counts must be init to 0 */
- int block_count; /* # of pixels remaining in RLE block */
- int dup_pixel_count; /* # of times to duplicate previous pixel */
+ int block_count; /* # of pixels remaining in RLE block */
+ int dup_pixel_count; /* # of times to duplicate previous pixel */
/* This saves the correct pixel-row-expansion method for preload_image */
- JMETHOD(JDIMENSION, get_pixel_rows, (j_compress_ptr cinfo,
- cjpeg_source_ptr sinfo));
+ JDIMENSION (*get_pixel_rows) (j_compress_ptr cinfo, cjpeg_source_ptr sinfo);
} tga_source_struct;
@@ -148,9 +150,9 @@
/* Time to read RLE block header? */
if (--sinfo->block_count < 0) { /* decrement pixels remaining in block */
i = read_byte(sinfo);
- if (i & 0x80) { /* Start of duplicate-pixel block? */
+ if (i & 0x80) { /* Start of duplicate-pixel block? */
sinfo->dup_pixel_count = i & 0x7F; /* number of dups after this one */
- sinfo->block_count = 0; /* then read new block header */
+ sinfo->block_count = 0; /* then read new block header */
} else {
sinfo->block_count = i & 0x7F; /* number of pixels after this one */
}
@@ -177,7 +179,7 @@
tga_source_ptr source = (tga_source_ptr) sinfo;
register JSAMPROW ptr;
register JDIMENSION col;
-
+
ptr = source->pub.buffer[0];
for (col = cinfo->image_width; col > 0; col--) {
(*source->read_pixel) (source); /* Load next pixel into tga_pixel */
@@ -215,7 +217,7 @@
register int t;
register JSAMPROW ptr;
register JDIMENSION col;
-
+
ptr = source->pub.buffer[0];
for (col = cinfo->image_width; col > 0; col--) {
(*source->read_pixel) (source); /* Load next pixel into tga_pixel */
@@ -242,7 +244,7 @@
tga_source_ptr source = (tga_source_ptr) sinfo;
register JSAMPROW ptr;
register JDIMENSION col;
-
+
ptr = source->pub.buffer[0];
for (col = cinfo->image_width; col > 0; col--) {
(*source->read_pixel) (source); /* Load next pixel into tga_pixel */
@@ -338,8 +340,8 @@
unsigned int width, height, maplen;
boolean is_bottom_up;
-#define GET_2B(offset) ((unsigned int) UCH(targaheader[offset]) + \
- (((unsigned int) UCH(targaheader[offset+1])) << 8))
+#define GET_2B(offset) ((unsigned int) UCH(targaheader[offset]) + \
+ (((unsigned int) UCH(targaheader[offset+1])) << 8))
if (! ReadOK(source->pub.input_file, targaheader, 18))
ERREXIT(cinfo, JERR_INPUT_EOF);
@@ -355,17 +357,18 @@
width = GET_2B(12);
height = GET_2B(14);
source->pixel_size = UCH(targaheader[16]) >> 3;
- flags = UCH(targaheader[17]); /* Image Descriptor byte */
+ flags = UCH(targaheader[17]); /* Image Descriptor byte */
- is_bottom_up = ((flags & 0x20) == 0); /* bit 5 set => top-down */
- interlace_type = flags >> 6; /* bits 6/7 are interlace code */
+ is_bottom_up = ((flags & 0x20) == 0); /* bit 5 set => top-down */
+ interlace_type = flags >> 6; /* bits 6/7 are interlace code */
- if (cmaptype > 1 || /* cmaptype must be 0 or 1 */
+ if (cmaptype > 1 || /* cmaptype must be 0 or 1 */
source->pixel_size < 1 || source->pixel_size > 4 ||
(UCH(targaheader[16]) & 7) != 0 || /* bits/pixel must be multiple of 8 */
- interlace_type != 0) /* currently don't allow interlaced image */
+ interlace_type != 0 || /* currently don't allow interlaced image */
+ width == 0 || height == 0) /* image width/height must be non-zero */
ERREXIT(cinfo, JERR_TGA_BADPARMS);
-
+
if (subtype > 8) {
/* It's an RLE-coded file */
source->read_pixel = read_rle_pixel;
@@ -377,18 +380,18 @@
}
/* Now should have subtype 1, 2, or 3 */
- components = 3; /* until proven different */
+ components = 3; /* until proven different */
cinfo->in_color_space = JCS_RGB;
switch (subtype) {
- case 1: /* Colormapped image */
+ case 1: /* Colormapped image */
if (source->pixel_size == 1 && cmaptype == 1)
source->get_pixel_rows = get_8bit_row;
else
ERREXIT(cinfo, JERR_TGA_BADPARMS);
TRACEMS2(cinfo, 1, JTRC_TGA_MAPPED, width, height);
break;
- case 2: /* RGB image */
+ case 2: /* RGB image */
switch (source->pixel_size) {
case 2:
source->get_pixel_rows = get_16bit_row;
@@ -405,7 +408,7 @@
}
TRACEMS2(cinfo, 1, JTRC_TGA, width, height);
break;
- case 3: /* Grayscale image */
+ case 3: /* Grayscale image */
components = 1;
cinfo->in_color_space = JCS_GRAYSCALE;
if (source->pixel_size == 1)
@@ -440,8 +443,8 @@
source->pub.buffer_height = 1;
source->pub.get_pixel_rows = source->get_pixel_rows;
}
-
- while (idlen--) /* Throw away ID field */
+
+ while (idlen--) /* Throw away ID field */
(void) read_byte(source);
if (maplen > 0) {
@@ -453,7 +456,7 @@
/* and read it from the file */
read_colormap(source, (int) maplen, UCH(targaheader[7]));
} else {
- if (cmaptype) /* but you promised a cmap! */
+ if (cmaptype) /* but you promised a cmap! */
ERREXIT(cinfo, JERR_TGA_BADPARMS);
source->colormap = NULL;
}
@@ -488,8 +491,8 @@
/* Create module interface object */
source = (tga_source_ptr)
(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
- SIZEOF(tga_source_struct));
- source->cinfo = cinfo; /* make back link for subroutines */
+ sizeof(tga_source_struct));
+ source->cinfo = cinfo; /* make back link for subroutines */
/* Fill in method ptrs, except get_pixel_rows which start_input sets */
source->pub.start_input = start_input_tga;
source->pub.finish_input = finish_input_tga;