forked from AuroraMiddleware/gtk
Slight cosmetic cleanup.
1999-11-09 Michael Fulbright <drmike@redhat.com>
* src/io-jpeg.c: Slight cosmetic cleanup.
* src/io-pnm.c: Fixed raw PNM loading bug. Also discovered that ASCII
PBM loading has a similar problem and will address tomorrow.
This commit is contained in:
Michael Fulbright
Michael Fulbright
parent
9495faccfc
commit
c9a347c8e9
@ -1,3 +1,10 @@
|
||||
1999-11-09 Michael Fulbright <drmike@redhat.com>
|
||||
|
||||
* src/io-jpeg.c: Slight cosmetic cleanup.
|
||||
|
||||
* src/io-pnm.c: Fixed raw PNM loading bug. Also discovered that ASCII
|
||||
PBM loading has a similar problem and will address tomorrow.
|
||||
|
||||
1999-11-09 Havoc Pennington <hp@pobox.com>
|
||||
|
||||
* src/Makefile.am (libgdk_pixbuf_la_SOURCES): build the
|
||||
|
||||
@ -492,7 +492,7 @@ image_load_increment (gpointer data, guchar *buf, guint size)
|
||||
rowptr = context->dptr;
|
||||
for (i=0; i < cinfo->rec_outbuf_height; i++) {
|
||||
*lptr++ = rowptr;
|
||||
rowptr += context->pixbuf->art_pixbuf->rowstride;;
|
||||
rowptr += context->pixbuf->art_pixbuf->rowstride;
|
||||
}
|
||||
|
||||
nlines = jpeg_read_scanlines (cinfo, lines,
|
||||
|
||||
@ -67,6 +67,7 @@ typedef struct {
|
||||
guint width;
|
||||
guint height;
|
||||
guint maxval;
|
||||
guint rowstride;
|
||||
PnmFormat type;
|
||||
|
||||
guint output_row; /* last row to be completed */
|
||||
@ -116,7 +117,8 @@ explode_bitmap_into_buf (PnmLoaderContext *context)
|
||||
|
||||
from = dptr + (wid - 1)/8;
|
||||
to = dptr + (wid - 1) * 3;
|
||||
bit = 7 - (((y+1)*wid - 1) % 8);
|
||||
/* bit = 7 - (((y+1)*wid-1) % 8); */
|
||||
bit = 7 - ((wid-1) % 8);
|
||||
|
||||
/* get first byte and align properly */
|
||||
data = from[0];
|
||||
@ -124,6 +126,8 @@ explode_bitmap_into_buf (PnmLoaderContext *context)
|
||||
|
||||
for (x = wid-1; x >= 0; x--) {
|
||||
|
||||
/* g_print ("%c", (data & 1) ? '*' : ' '); */
|
||||
|
||||
to[0] = to[1] = to[2] = (data & 1) ? 0x00 : 0xff;
|
||||
|
||||
to -= 3;
|
||||
@ -137,6 +141,8 @@ explode_bitmap_into_buf (PnmLoaderContext *context)
|
||||
data >>= 1;
|
||||
}
|
||||
}
|
||||
|
||||
/* g_print ("\n"); */
|
||||
}
|
||||
|
||||
/* explode gray image row into rgb components in pixbuf */
|
||||
@ -367,6 +373,8 @@ pnm_read_raw_scanline (PnmLoaderContext *context)
|
||||
|
||||
g_return_val_if_fail (context != NULL, PNM_FATAL_ERR);
|
||||
|
||||
/*G_BREAKPOINT(); */
|
||||
|
||||
inbuf = &context->inbuf;
|
||||
|
||||
switch (context->type) {
|
||||
@ -391,11 +399,11 @@ pnm_read_raw_scanline (PnmLoaderContext *context)
|
||||
return PNM_SUSPEND;
|
||||
|
||||
context->dptr = context->pixels +
|
||||
context->output_row * context->width * 3;
|
||||
context->output_row * context->rowstride;
|
||||
|
||||
switch (context->type) {
|
||||
case PNM_FORMAT_PBM_RAW:
|
||||
numbytes = numpix/8;
|
||||
numbytes = numpix/8 + ((numpix % 8) ? 1 : 0);
|
||||
offset = context->output_col/8;
|
||||
break;
|
||||
case PNM_FORMAT_PGM_RAW:
|
||||
@ -451,11 +459,11 @@ pnm_read_ascii_scanline (PnmLoaderContext *context)
|
||||
inbuf = &context->inbuf;
|
||||
|
||||
context->dptr = context->pixels +
|
||||
context->output_row * context->width * 3;
|
||||
context->output_row * context->rowstride;
|
||||
|
||||
switch (context->type) {
|
||||
case PNM_FORMAT_PBM:
|
||||
numval = 8;
|
||||
numval = MIN (8, context->width - context->output_col);
|
||||
offset = context->output_col/8;
|
||||
break;
|
||||
case PNM_FORMAT_PGM:
|
||||
@ -478,6 +486,7 @@ pnm_read_ascii_scanline (PnmLoaderContext *context)
|
||||
if (context->type == PNM_FORMAT_PBM) {
|
||||
mask = 0x80;
|
||||
data = 0;
|
||||
numval = MIN (8, context->width - context->output_col);
|
||||
}
|
||||
|
||||
old_next_byte = inbuf->next_byte;
|
||||
@ -508,10 +517,12 @@ pnm_read_ascii_scanline (PnmLoaderContext *context)
|
||||
}
|
||||
}
|
||||
|
||||
if (context->type == PNM_FORMAT_PBM)
|
||||
*dptr++ = value;
|
||||
|
||||
if (context->type == PNM_FORMAT_PBM) {
|
||||
*dptr++ = data;
|
||||
context->output_col += 8;
|
||||
} else {
|
||||
context->output_col++;
|
||||
}
|
||||
|
||||
if (context->output_col == context->width) {
|
||||
if ( context->type == PNM_FORMAT_PBM )
|
||||
@ -584,6 +595,7 @@ image_load (FILE *f)
|
||||
|
||||
inbuf = &context.inbuf;
|
||||
|
||||
file_off = 0;
|
||||
while (TRUE) {
|
||||
guint num_to_read;
|
||||
|
||||
@ -621,6 +633,7 @@ image_load (FILE *f)
|
||||
|
||||
/* scan until we hit image data */
|
||||
if (!context.did_prescan) {
|
||||
|
||||
if (skip_ahead_whitespace (inbuf) == NULL)
|
||||
continue;
|
||||
|
||||
@ -628,23 +641,18 @@ image_load (FILE *f)
|
||||
context.output_row = 0;
|
||||
context.output_col = 0;
|
||||
|
||||
context.pixbuf = gdk_pixbuf_new(ART_PIX_RGB,
|
||||
/*have_alpha*/ FALSE,
|
||||
8,
|
||||
context.width,
|
||||
context.height);
|
||||
|
||||
|
||||
if (context.pixbuf == NULL) {
|
||||
context.rowstride = context.width * 3;
|
||||
context.pixels = g_malloc (context.height *
|
||||
context.width * 3);
|
||||
if (!context.pixels) {
|
||||
/* Failed to allocate memory */
|
||||
g_error ("Couldn't allocate gdkpixbuf");
|
||||
g_error ("Couldn't allocate pixel buf");
|
||||
}
|
||||
|
||||
context.pixels = context.pixbuf->art_pixbuf->pixels;
|
||||
}
|
||||
|
||||
/* if we got here we're reading image data */
|
||||
while (context.output_row < context.height) {
|
||||
|
||||
rc = pnm_read_scanline (&context);
|
||||
|
||||
if (rc == PNM_SUSPEND) {
|
||||
@ -669,54 +677,6 @@ image_load (FILE *f)
|
||||
|
||||
}
|
||||
|
||||
#if 0
|
||||
/**** Progressive image loading handling *****/
|
||||
|
||||
/* these routines required because we are acting as a source manager for */
|
||||
/* libjpeg. */
|
||||
static void
|
||||
init_source (j_decompress_ptr cinfo)
|
||||
{
|
||||
my_src_ptr src = (my_src_ptr) cinfo->src;
|
||||
|
||||
src->skip_next = 0;
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
term_source (j_decompress_ptr cinfo)
|
||||
{
|
||||
/* XXXX - probably should scream something has happened */
|
||||
}
|
||||
|
||||
|
||||
/* for progressive loading (called "I/O Suspension" by libjpeg docs) */
|
||||
/* we do nothing except return "FALSE" */
|
||||
static boolean
|
||||
fill_input_buffer (j_decompress_ptr cinfo)
|
||||
{
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
skip_input_data (j_decompress_ptr cinfo, long num_bytes)
|
||||
{
|
||||
my_src_ptr src = (my_src_ptr) cinfo->src;
|
||||
long num_can_do;
|
||||
|
||||
/* move as far as we can into current buffer */
|
||||
/* then set skip_next to catch the rest */
|
||||
if (num_bytes > 0) {
|
||||
num_can_do = MIN (src->pub.bytes_in_buffer, num_bytes);
|
||||
src->pub.next_input_byte += (size_t) num_can_do;
|
||||
src->pub.bytes_in_buffer -= (size_t) num_can_do;
|
||||
|
||||
src->skip_next = num_bytes - num_can_do;
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
/*
|
||||
* func - called when we have pixmap created (but no image data)
|
||||
* user_data - passed as arg 1 to func
|
||||
@ -852,6 +812,7 @@ image_load_increment (gpointer data, guchar *buf, guint size)
|
||||
}
|
||||
|
||||
context->pixels = context->pixbuf->art_pixbuf->pixels;
|
||||
context->rowstride = context->pixbuf->art_pixbuf->rowstride;
|
||||
|
||||
/* Notify the client that we are ready to go */
|
||||
(* context->prepared_func) (context->pixbuf,
|
||||
@ -861,7 +822,6 @@ image_load_increment (gpointer data, guchar *buf, guint size)
|
||||
|
||||
/* if we got here we're reading image data */
|
||||
while (context->output_row < context->height) {
|
||||
|
||||
rc = pnm_read_scanline (context);
|
||||
|
||||
if (rc == PNM_SUSPEND) {
|
||||
@ -872,6 +832,7 @@ image_load_increment (gpointer data, guchar *buf, guint size)
|
||||
g_warning ("io-pnm.c: error reading rows..\n");
|
||||
return FALSE;
|
||||
} else if (rc == PNM_OK) {
|
||||
|
||||
/* send updated signal */
|
||||
(* context->updated_func) (context->pixbuf,
|
||||
context->user_data,
|
||||
|
||||
Loading…
Reference in New Issue
Block a user