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textrender: Fix endianness problems (i.e. make it work again on big endian architectures)

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This commit is contained in:
Sebastian Dröge 2009-08-06 09:13:14 +02:00
parent 513f375345
commit cc61c9e27e
1 changed files with 27 additions and 11 deletions
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38
ext/pango/gsttextrender.c
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@ -49,6 +49,18 @@
#include "gsttextrender.h"
#include <string.h>
#if G_BYTE_ORDER == G_LITTLE_ENDIAN
# define CAIRO_ARGB_A 3
# define CAIRO_ARGB_R 2
# define CAIRO_ARGB_G 1
# define CAIRO_ARGB_B 0
#else
# define CAIRO_ARGB_A 0
# define CAIRO_ARGB_R 1
# define CAIRO_ARGB_G 2
# define CAIRO_ARGB_B 3
#endif
GST_DEBUG_CATEGORY_EXTERN (pango_debug);
#define GST_CAT_DEFAULT pango_debug
@ -394,10 +406,11 @@ gst_text_renderer_image_to_ayuv (GstTextRender * render, guchar * pixbuf,
int n;
p = pixbuf + ypos * stride + xpos;
for (n = 0; n < width; n++) {
b = *bitp++;
g = *bitp++;
r = *bitp++;
a = *bitp++;
b = bitp[CAIRO_ARGB_B];
g = bitp[CAIRO_ARGB_G];
r = bitp[CAIRO_ARGB_R];
a = bitp[CAIRO_ARGB_A];
bitp += 4;
*p++ = a;
*p++ = CLAMP ((int) (((19595 * r) >> 16) + ((38470 * g) >> 16) +
@ -414,7 +427,7 @@ static void
gst_text_renderer_image_to_argb (GstTextRender * render, guchar * pixbuf,
int xpos, int ypos, int stride)
{
int i;
int i, j;
guchar *p, *bitp;
int width, height;
@ -424,8 +437,14 @@ gst_text_renderer_image_to_argb (GstTextRender * render, guchar * pixbuf,
for (i = 0; i < height; i++) {
p = pixbuf + ypos * stride + xpos;
memcpy (p, bitp, width * 4);
bitp += width * 4;
for (j = 0; j < width; j++) {
p[0] = bitp[CAIRO_ARGB_A];
p[1] = bitp[CAIRO_ARGB_R];
p[2] = bitp[CAIRO_ARGB_G];
p[3] = bitp[CAIRO_ARGB_B];
bitp += 4;
p += 4;
}
}
}
@ -486,10 +505,7 @@ gst_text_render_chain (GstPad * pad, GstBuffer * inbuf)
data = GST_BUFFER_DATA (outbuf);
if (render->use_ARGB) {
for (n = 0; n < render->width * render->height; n++) {
data[n * 4] = 0;
data[n * 4 + 1] = data[n * 4 + 2] = data[n * 4 + 3] = 0;
}
memset (data, 0, render->width * render->height * 4);
} else {
for (n = 0; n < render->width * render->height; n++) {
data[n * 4] = data[n * 4 + 1] = 0;