[Swfdec] screenshot of swf file
zou lunkai
zoulunkai at gmail.com
Wed Jan 20 16:55:35 PST 2010
>> Where is liboil used?
inside jpeg decoder: jpeg_rgb_decoder.c
swfdec_buffer.c: swfdec_buffer_queue_peek
it's not heavily used in swfdec.
>> The first differences are the swfdec_matrix_ensure_invertible failures
which dont appear on the host output.
Maybe you need to check if your ARM board could support float point numbers
correctly. Take a look at function swfdec_matrix_ensure_invertible(), it's
not big.
--zou
On Thu, Jan 21, 2010 at 7:29 AM, Paul Brooker <paul at thefunnyfish.net> wrote:
> Paul Brooker wrote:
> > Hi,
> > Im trying to thumbnail a swf file based on this found at
> > http://www.mail-archive.com/swfdec@lists.freedesktop.org/msg00821.html.
> >
> > #include <stdlib.h>
> > #include <stdio.h>
> > #include <swfdec/swfdec.h>
> > #include <cairo.h>
> >
> > void swfdec_player_save (SwfdecPlayer *player, guint width, guint
> > height, const char *filename) {
> > cairo_surface_t *surface;
> > cairo_t *cr;
> > surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, width,
> > height);
> > cr = cairo_create (surface);
> > swfdec_player_render (player, cr);
> > cairo_destroy (cr);
> > cairo_surface_write_to_png (surface, filename);
> > cairo_surface_destroy (surface);
> > }
> >
> > int main(int argc, char *argv[]) {
> > char *input = argv[1];
> > char *output = argv[2];
> > SwfdecPlayer *player = swfdec_player_new(NULL);
> > SwfdecURL *url = swfdec_url_new_from_input(input);
> > swfdec_player_set_url(player, url);
> > swfdec_url_free (url);
> > swfdec_player_set_size (player, 800, 480);
> > swfdec_player_advance(player, swfdec_player_get_next_event
> (player));
> > swfdec_player_save(player, 800, 480, output);
> > return 0;
> > }
> >
> > Using this i get a blank transparent png output as reported by the
> > original poster. Ive also tried the gnome thumbnailer which produces
> > the same result. The swf file is a single frame containing just two
> > boxes. I cant see anything unusual from any of the debugging output. Im
> > not sure where to look for the problem. Im running it on an ARM board
> > and using swfdec version 0.8.4. Any help would be much appreciated.
> >
> > Thanks in advance,
> > Paul Brooker
> > _______________________________________________
> > Swfdec mailing list
> > Swfdec at lists.freedesktop.org
> > http://lists.freedesktop.org/mailman/listinfo/swfdec
> >
>
> ok, having looked a bit further into this ive got it working on my host and
> have compared the debugging output with that of the arm board. The only
> differences towards the end of the debugging output.
>
> Host debug :
>
> SWFDEC: LOG : swfdec_sprite_movie.c(215):
> swfdec_sprite_movie_perform_place: matrix = { 1 0, 0 1 } + { 0 0 }
> SWFDEC: DEBUG: swfdec_movie.c(917): swfdec_movie_set_property: inserting
> SwfdecGraphicMovie 0x8939018 into SwfdecSpriteMovie 0x88ac130
> SWFDEC: LOG : swfdec_as_context.c(199): swfdec_as_context_try_use_mem: +
> 448 bytes, total 243918 ( 244206 since GC)
> SWFDEC: LOG : swfdec_sprite_movie.c(379):
> swfdec_sprite_movie_perform_one_action: 0x88ac130: executing 2th tag
> ShowFrame in frame 0
> SWFDEC: LOG : swfdec_stream_target.c(120): swfdec_stream_target_close:
> close on file:////opt/x86/box.swf
> SWFDEC: LOG : swfdec_player.c(453): swfdec_player_add_action: adding
> action 0
> SWFDEC: DEBUG: swfdec_player.c(1988): swfdec_player_unlock_soft: UNLOCK
> SWFDEC: LOG : swfdec_movie.c(122): swfdec_movie_invalidate: invalidating
> SwfdecGraphicMovie at end
> SWFDEC: LOG : swfdec_player.c(2490): swfdec_player_invalidate:
> invalidating 0 0 750 430
> SWFDEC: DEBUG: swfdec_player.c(2506): swfdec_player_invalidate: toplevel
> invalidation of 0 0 750 430 - now 1 subregions
> SWFDEC: LOG : swfdec_movie.c(122): swfdec_movie_invalidate: invalidating
> SwfdecSpriteMovie at end
> SWFDEC: LOG : swfdec_movie.c(122): swfdec_movie_invalidate: invalidating
> SwfdecGraphicMovie at end
> SWFDEC: LOG : swfdec_player.c(2490): swfdec_player_invalidate:
> invalidating 0 0 750 430
> SWFDEC: DEBUG: swfdec_player.c(2506): swfdec_player_invalidate: toplevel
> invalidation of 0 0 750 430 - now 1 subregions
> SWFDEC: INFO : swfdec_player.c(3141): swfdec_player_render_with_renderer:
> === 0x88a2150: START RENDER ===
> SWFDEC: LOG : swfdec_movie.c(798): swfdec_movie_render: transforming
> movie, transform: 1 1 0 0 0 0
> SWFDEC: LOG : swfdec_movie.c(1309): swfdec_movie_do_render: rendering
> 0x8939018 with depth -16383
> SWFDEC: LOG : swfdec_movie.c(798): swfdec_movie_render: transforming
> movie, transform: 1 1 0 0 0 0
> SWFDEC: LOG : swfdec_color.c(102): swfdec_color_apply_transform: in rgba
> 136,136,136,255
> SWFDEC: LOG : swfdec_color.c(114): swfdec_color_apply_transform: out rgba
> 136,136,136,255
> SWFDEC: LOG : swfdec_color.c(102): swfdec_color_apply_transform: in rgba
> 0,255,255,255
> SWFDEC: LOG : swfdec_color.c(114): swfdec_color_apply_transform: out rgba
> 0,255,255,255
> SWFDEC: INFO : swfdec_player.c(3154): swfdec_player_render_with_renderer:
> === 0x88a2150: END RENDER ===
>
> ARM board debug:
>
> SWFDEC: LOG : swfdec_sprite_movie.c(215):
> swfdec_sprite_movie_perform_place: matrix = { 1 0, 0 1 } + { 0 0 }
> SWFDEC: DEBUG: swfdec_movie.c(917): swfdec_movie_set_property: inserting
> SwfdecGraphicMovie 0x75008 into SwfdecSpriteMovie 0x28128
> SWFDEC: LOG : swfdec_as_context.c(199): swfdec_as_context_try_use_mem: +
> 448 bytes, total 150299 ( 150323 since GC)
> SWFDEC: INFO : swfdec_color.c(243): swfdec_matrix_ensure_invertible: matrix
> not invertible, adding epsilon to smallest member
> SWFDEC: INFO : swfdec_color.c(243): swfdec_matrix_ensure_invertible: matrix
> not invertible, adding epsilon to smallest member
> SWFDEC: LOG : swfdec_sprite_movie.c(379):
> swfdec_sprite_movie_perform_one_action: 0x28128: executing 2th tag ShowFrame
> in frame 0
> SWFDEC: LOG : swfdec_stream_target.c(120): swfdec_stream_target_close:
> close on file:////home/plg/box.swf
> SWFDEC: LOG : swfdec_player.c(453): swfdec_player_add_action: adding
> action 0
> SWFDEC: DEBUG: swfdec_player.c(1988): swfdec_player_unlock_soft: UNLOCK
> SWFDEC: LOG : swfdec_movie.c(122): swfdec_movie_invalidate: invalidating
> SwfdecGraphicMovie at end
> SWFDEC: LOG : swfdec_player.c(2490): swfdec_player_invalidate:
> invalidating 0 0 1 1
> SWFDEC: DEBUG: swfdec_player.c(2506): swfdec_player_invalidate: toplevel
> invalidation of 0 0 1 1 - now 1 subregions
> SWFDEC: LOG : swfdec_movie.c(122): swfdec_movie_invalidate: invalidating
> SwfdecSpriteMovie at end
> SWFDEC: LOG : swfdec_movie.c(122): swfdec_movie_invalidate: invalidating
> SwfdecGraphicMovie at end
> SWFDEC: LOG : swfdec_player.c(2490): swfdec_player_invalidate:
> invalidating 0 0 1 1
> SWFDEC: DEBUG: swfdec_player.c(2506): swfdec_player_invalidate: toplevel
> invalidation of 0 0 1 1 - now 1 subregions
> SWFDEC: INFO : swfdec_player.c(3141): swfdec_player_render_with_renderer:
> === 0x1c0c0: START RENDER ===
> SWFDEC: LOG : swfdec_movie.c(798): swfdec_movie_render: transforming
> movie, transform: 1 1 0 0 0 0
> SWFDEC: LOG : swfdec_movie.c(1309): swfdec_movie_do_render: rendering
> 0x75008 with depth -16383
> SWFDEC: LOG : swfdec_movie.c(798): swfdec_movie_render: transforming
> movie, transform: 1.52588e-05 1.52588e-05 0 0 0 0
> SWFDEC: LOG : swfdec_color.c(102): swfdec_color_apply_transform: in rgba
> 136,136,136,255
> SWFDEC: LOG : swfdec_color.c(114): swfdec_color_apply_transform: out rgba
> 136,136,136,255
> SWFDEC: LOG : swfdec_color.c(102): swfdec_color_apply_transform: in rgba
> 0,255,255,255
> SWFDEC: LOG : swfdec_color.c(114): swfdec_color_apply_transform: out rgba
> 0,255,255,255
> SWFDEC: INFO : swfdec_player.c(3154): swfdec_player_render_with_renderer:
> === 0x1c0c0: END RENDER ===
>
> The first differences are the swfdec_matrix_ensure_invertible failures
> which dont appear on the host output. From then on the invalidating regions
> are incorrect and are set to 0,0->1,1. Im not clear on the inner workings
> so not sure what is calling the functions incorrectly. Im suspicious of
> liboil as the oil_test produces failures of some conversion functions.
> Where is liboil used?
> _______________________________________________
> Swfdec mailing list
> Swfdec at lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/swfdec
>
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