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Make resizing work

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git-svn-id: https://svn.code.sf.net/p/gphoto/code/trunk/libgphoto2@2751 67ed7778-7388-44ab-90cf-0a291f65f57c
This commit is contained in:
Lutz Mueller
2001-10-26 07:11:55 +00:00
parent 7252793b68
commit f71f5df658
1 changed files with 48 additions and 24 deletions
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72
frontends/command-line/gphoto2-cmd-capture.c
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@@ -25,6 +25,8 @@
#include <aalib.h>
#include <gphoto2-port-log.h>
#if HAVE_JPEG
#include <jpeglib.h>
#endif
@@ -33,18 +35,16 @@ int
gp_cmd_capture_preview (Camera *camera, CameraFile *file)
{
int result, event;
aa_context *context;
aa_context *c;
aa_renderparams *params;
aa_palette palette;
unsigned char *bitmap;
context = aa_autoinit (&aa_defparams);
if (!context)
c = aa_autoinit (&aa_defparams);
if (!c)
return (GP_ERROR);
aa_autoinitkbd (context, 0);
aa_autoinitkbd (c, 0);
params = aa_getrenderparams ();
bitmap = aa_image (context);
aa_hidecursor (context);
aa_hidecursor (c);
result = gp_camera_capture_preview (camera, file);
if (result < 0)
@@ -53,9 +53,11 @@ gp_cmd_capture_preview (Camera *camera, CameraFile *file)
while (1) {
const char *data, *type;
long int size;
unsigned char *bitmap;
gp_file_get_data_and_size (file, &data, &size);
gp_file_get_mime_type (file, &type);
bitmap = aa_image (c);
#if HAVE_JPEG
if (!strcmp (type, GP_MIME_JPEG)) {
@@ -68,23 +70,36 @@ gp_cmd_capture_preview (Camera *camera, CameraFile *file)
gp_file_save (file, "/tmp/gphoto.jpg");
f = fopen ("/tmp/gphoto.jpg", "r");
if (!f) {
aa_close (context);
aa_close (c);
return (GP_ERROR);
}
cinfo.err = jpeg_std_error (&pub);
gp_log (GP_LOG_DEBUG, "gphoto2", "Preparing "
"decompression...");
jpeg_create_decompress (&cinfo);
jpeg_stdio_src (&cinfo, f);
jpeg_read_header (&cinfo, TRUE);
while (aa_imgwidth (context) <
(cinfo.image_width / cinfo.scale_denom))
while (cinfo.scale_denom) {
jpeg_calc_output_dimensions (&cinfo);
if ((aa_imgwidth (c) >= cinfo.output_width) &&
(aa_imgheight (c) >= cinfo.output_height))
break;
cinfo.scale_denom *= 2;
while (aa_imgheight (context) <
(cinfo.image_height / cinfo.scale_denom))
cinfo.scale_denom *= 2;
}
if (!cinfo.scale_denom) {
gp_log (GP_LOG_DEBUG, "gphoto2", "Screen "
"too small.");
jpeg_destroy_decompress (&cinfo);
aa_close (c);
return (GP_OK);
}
gp_log (GP_LOG_DEBUG, "gphoto2", "AA: (w,h) = (%i,%i)",
aa_imgwidth (c), aa_imgheight (c));
jpeg_start_decompress (&cinfo);
gp_log (GP_LOG_DEBUG, "gphoto2", "JPEG: (w,h) = "
"(%i,%i)", cinfo.output_width,
cinfo.output_height);
cinfo.do_fancy_upsampling = FALSE;
cinfo.do_block_smoothing = FALSE;
cinfo.out_color_space = JCS_GRAYSCALE;
@@ -94,7 +109,7 @@ gp_cmd_capture_preview (Camera *camera, CameraFile *file)
lptr = lines;
for (i = 0; i < cinfo.rec_outbuf_height; i++) {
*lptr++ = dptr;
dptr += aa_imgwidth (context);
dptr += aa_imgwidth (c);
}
jpeg_read_scanlines (&cinfo, lines,
cinfo.rec_outbuf_height);
@@ -110,30 +125,39 @@ gp_cmd_capture_preview (Camera *camera, CameraFile *file)
#endif
{
/* Silently skip the preview */
aa_close (context);
aa_close (c);
return (GP_OK);
}
aa_renderpalette (context, palette, params, 0, 0,
aa_scrwidth (context), aa_scrheight (context));
aa_flush (context);
aa_renderpalette (c, palette, params, 0, 0,
aa_scrwidth (c), aa_scrheight (c));
aa_flush (c);
event = aa_getevent (context, 1);
event = aa_getevent (c, 1);
switch (event) {
case AA_RESIZE:
aa_resize (c);
aa_flush (c);
break;
case 32:
/* Space */
result = gp_camera_capture_preview (camera, file);
if (result < 0) {
aa_close (c);
return (result);
}
break;
case 305:
/* ESC */
aa_close (context);
aa_close (c);
return (GP_ERROR);
default:
aa_close (context);
aa_close (c);
return (GP_OK);
}
}
aa_close (context);
aa_close (c);
return (GP_OK);
}