diff options
Diffstat (limited to 'riscos/gif.c')
-rw-r--r-- | riscos/gif.c | 242 |
1 files changed, 0 insertions, 242 deletions
diff --git a/riscos/gif.c b/riscos/gif.c deleted file mode 100644 index 3f450b209..000000000 --- a/riscos/gif.c +++ /dev/null @@ -1,242 +0,0 @@ -/* - * This file is part of NetSurf, http://netsurf.sourceforge.net/ - * Licensed under the GNU General Public License, - * http://www.opensource.org/licenses/gpl-license - * Copyright 2003 John M Bell <jmb202@ecs.soton.ac.uk> - * Copyright 2004 Richard Wilson <not_ginger_matt@sourceforge.net> - */ - -#include <assert.h> -#include <string.h> -#include <stdbool.h> -#include <stdlib.h> -#include "oslib/osfile.h" -#include "oslib/osspriteop.h" -#include "netsurf/utils/config.h" -#include "netsurf/content/content.h" -#include "netsurf/riscos/gif.h" -#include "netsurf/riscos/gifread.h" -#include "netsurf/riscos/gui.h" -#include "netsurf/riscos/image.h" -#include "netsurf/riscos/options.h" -#include "netsurf/utils/log.h" -#include "netsurf/utils/messages.h" -#include "netsurf/utils/utils.h" - - -/* GIF FUNCTIONALITY - ================= - - All GIFs are dynamically decompressed using the routines that gifread.c - provides. Whilst this allows support for progressive decoding, it is - not implemented here as NetSurf currently does not provide such support. - - [rjw] - Sun 4th April 2004 -*/ - -#ifdef WITH_GIF - -static void nsgif_animate(void *p); - - -bool nsgif_create(struct content *c, const char *params[]) { - union content_msg_data msg_data; - /* Initialise our data structure - */ - c->data.gif.gif = calloc(sizeof(gif_animation), 1); - if (!c->data.gif.gif) { - msg_data.error = messages_get("NoMemory"); - content_broadcast(c, CONTENT_MSG_ERROR, msg_data); - warn_user("NoMemory", 0); - return false; - } - c->data.gif.current_frame = 0; - return true; -} - - -bool nsgif_convert(struct content *c, int iwidth, int iheight) { - int res; - struct gif_animation *gif; - union content_msg_data msg_data; - - /* Create our animation - */ - gif = c->data.gif.gif; - gif->gif_data = c->source_data; - gif->buffer_size = c->source_size; - gif->buffer_position = 0; // Paranoid - - /* Initialise the GIF - */ - res = gif_initialise(gif); - switch (res) { - case GIF_INSUFFICIENT_MEMORY: - msg_data.error = messages_get("NoMemory"); - content_broadcast(c, CONTENT_MSG_ERROR, msg_data); - warn_user("NoMemory", 0); - return false; - case GIF_INSUFFICIENT_DATA: - case GIF_DATA_ERROR: - msg_data.error = messages_get("BadGIF"); - content_broadcast(c, CONTENT_MSG_ERROR, msg_data); - return false; - } - - /* Abort on bad GIFs - */ - if ((gif->frame_count_partial == 0) || (gif->width == 0) || - (gif->height == 0)) { - msg_data.error = messages_get("BadGIF"); - content_broadcast(c, CONTENT_MSG_ERROR, msg_data); - return false; - } - - /* Store our content width and description - */ - c->width = gif->width; - c->height = gif->height; - c->title = malloc(100); - if (c->title) { - snprintf(c->title, 100, messages_get("GIFTitle"), c->width, c->height, c->source_size); - } - c->size += (gif->width * gif->height * 4) + 16 + 44 + 100; - - /* Initialise the first frame so if we try to use the image data directly prior to - a plot we get some sensible data - */ - gif_decode_frame(c->data.gif.gif, 0); - - /* Schedule the animation if we have one - */ - if (gif->frame_count > 1) { - schedule(gif->frames[0].frame_delay, nsgif_animate, c); - } - - /* Exit as a success - */ - c->status = CONTENT_STATUS_DONE; - return true; -} - - -bool nsgif_redraw(struct content *c, int x, int y, - int width, int height, - int clip_x0, int clip_y0, int clip_x1, int clip_y1, - float scale, unsigned long background_colour) { - - int previous_frame; - unsigned int frame, current_frame; - - /* If we have a gui_window then we work from there, if not we use the global - settings. We default to the first image if we don't have a GUI as we are - drawing a thumbnail unless something has gone very wrong somewhere else. - */ - if (ro_gui_current_redraw_gui) { - if (ro_gui_current_redraw_gui->option.animate_images) { - current_frame = c->data.gif.current_frame; - } else { - current_frame = 0; - } - } else { - if (c->data.gif.gif->loop_count == 0) { - current_frame = 0; - } else { - if (c->data.gif.gif->frame_count > 1) { - current_frame = c->data.gif.gif->frame_count - 1; - } else { - current_frame = 0; - } - } - } - - /* Decode from the last frame to the current frame - */ - if (current_frame < c->data.gif.gif->decoded_frame) { - previous_frame = 0; - } else { - previous_frame = c->data.gif.gif->decoded_frame + 1; - - } - for (frame = previous_frame; frame <= current_frame; frame++) { - gif_decode_frame(c->data.gif.gif, frame); - } - - return image_redraw(c->data.gif.gif->frame_image, x, y, width, - height, c->width * 2, c->height * 2, - background_colour, false, false, - IMAGE_PLOT_TINCT_ALPHA); -} - - -void nsgif_destroy(struct content *c) -{ - /* Free all the associated memory buffers - */ - schedule_remove(nsgif_animate, c); - gif_finalise(c->data.gif.gif); - free(c->data.gif.gif); -} - - -/** Performs any necessary animation. - - @param c The content to animate -*/ -void nsgif_animate(void *p) -{ - struct content *c = p; - union content_msg_data data; - int delay; - - /* Advance by a frame, updating the loop count accordingly - */ - c->data.gif.current_frame++; - if (c->data.gif.current_frame == c->data.gif.gif->frame_count) { - c->data.gif.current_frame = 0; - - /* A loop count of 0 has a special meaning of infinite - */ - if (c->data.gif.gif->loop_count != 0) { - c->data.gif.gif->loop_count--; - if (c->data.gif.gif->loop_count == 0) { - c->data.gif.current_frame = c->data.gif.gif->frame_count - 1; - c->data.gif.gif->loop_count = -1; - } - } - } - - - /* Continue animating if we should - */ - if (c->data.gif.gif->loop_count >= 0) { - delay = c->data.gif.gif->frames[c->data.gif.current_frame].frame_delay; - if (delay < option_minimum_gif_delay) delay = option_minimum_gif_delay; - schedule(delay, nsgif_animate, c); - } - - /* area within gif to redraw */ - data.redraw.x = c->data.gif.gif->frames[c->data.gif.current_frame].redraw_x; - data.redraw.y = c->data.gif.gif->frames[c->data.gif.current_frame].redraw_y; - data.redraw.width = c->data.gif.gif->frames[c->data.gif.current_frame].redraw_width; - data.redraw.height = c->data.gif.gif->frames[c->data.gif.current_frame].redraw_height; - - /* redraw background (true) or plot on top (false) */ - if (c->data.gif.current_frame > 0) { - data.redraw.full_redraw = - c->data.gif.gif->frames[c->data.gif.current_frame - 1].redraw_required; - } else { - data.redraw.full_redraw = true; - } - - /* other data */ - data.redraw.object = c; - data.redraw.object_x = 0; - data.redraw.object_y = 0; - data.redraw.object_width = c->width; - data.redraw.object_height = c->height; - - content_broadcast(c, CONTENT_MSG_REDRAW, data); -} - -#endif |