X-Git-Url: http://pileus.org/git/?p=grits;a=blobdiff_plain;f=src%2Fplugins%2Felev.c;h=db7b9775e535650cd16c3c91be774c154ad385a2;hp=f59238d1e66c0b62f617fde3c25fe20d21b4405f;hb=618983b0bfdc9af2d6dc368570a1911b892b5166;hpb=d8948985b467a5cfd0447ae413ed1c5d01afb024 diff --git a/src/plugins/elev.c b/src/plugins/elev.c index f59238d..db7b977 100644 --- a/src/plugins/elev.c +++ b/src/plugins/elev.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 2009-2010 Andy Spencer + * Copyright (C) 2009-2011 Andy Spencer * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -19,37 +19,42 @@ * SECTION:elev * @short_description: Elevation plugin * - * #GisPluginElev provides access to ground elevation. It does this in two ways: + * #GritsPluginElev provides access to ground elevation. It does this in two ways: * First, it provides a height function used by the viewer when drawing the * world. Second, it can load the elevation data into an image and draw a * greyscale elevation overlay on the planets surface. */ -#include +#include #include -#include #include #include "elev.h" -#define MAX_RESOLUTION 500 +/* Configuration */ +#define LOAD_BIL TRUE +#define LOAD_TEX FALSE + +/* Tile size constnats */ +#define MAX_RESOLUTION 50 #define TILE_WIDTH 1024 #define TILE_HEIGHT 512 +#define TILE_CHANNELS 4 #define TILE_SIZE (TILE_WIDTH*TILE_HEIGHT*sizeof(guint16)) struct _TileData { - /* OpenGL has to be first to make gis_opengl_render_tiles happy */ - guint opengl; - guint16 *bil; + /* OpenGL has to be first to make grits_tile_draw happy */ + guint tex; + guint16 *bil; }; static gdouble _height_func(gdouble lat, gdouble lon, gpointer _elev) { - GisPluginElev *elev = _elev; + GritsPluginElev *elev = _elev; if (!elev) return 0; - GisTile *tile = gis_tile_find(elev->tiles, lat, lon); + GritsTile *tile = grits_tile_find(elev->tiles, lat, lon); if (!tile) return 0; struct _TileData *data = tile->data; @@ -98,131 +103,134 @@ static gdouble _height_func(gdouble lat, gdouble lon, gpointer _elev) /********************** * Loader and Freeers * **********************/ -#define LOAD_BIL TRUE -#define LOAD_OPENGL FALSE + struct _LoadTileData { - GisPluginElev *elev; - gchar *path; - GisTile *tile; - GdkPixbuf *pixbuf; - struct _TileData *data; + GritsPluginElev *elev; + GritsTile *tile; + guint8 *pixels; + struct _TileData *tdata; }; + static guint16 *_load_bil(gchar *path) { gsize len; gchar *data = NULL; g_file_get_contents(path, &data, &len, NULL); - g_debug("GisPluginElev: load_bil %p", data); + g_debug("GritsPluginElev: load_bil %p", data); if (len != TILE_SIZE) { - g_warning("GisPluginElev: _load_bil - unexpected tile size %d, != %d", - len, TILE_SIZE); + g_warning("GritsPluginElev: _load_bil - unexpected tile size %ld, != %ld", + (glong)len, (glong)TILE_SIZE); g_free(data); return NULL; } return (guint16*)data; } -static GdkPixbuf *_load_pixbuf(guint16 *bil) + +static guchar *_load_pixels(guint16 *bil) { - GdkPixbuf *pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, FALSE, 8, TILE_WIDTH, TILE_HEIGHT); - guchar *pixels = gdk_pixbuf_get_pixels(pixbuf); - gint stride = gdk_pixbuf_get_rowstride(pixbuf); - gint nchan = gdk_pixbuf_get_n_channels(pixbuf); + g_assert(TILE_CHANNELS == 4); + + guchar (*pixels)[TILE_WIDTH][TILE_CHANNELS] + = g_malloc0(TILE_HEIGHT * TILE_WIDTH * TILE_CHANNELS); for (int r = 0; r < TILE_HEIGHT; r++) { for (int c = 0; c < TILE_WIDTH; c++) { gint16 value = bil[r*TILE_WIDTH + c]; - //guchar color = (float)(MAX(value,0))/8848 * 255; guchar color = (float)value/8848 * 255; - pixels[r*stride + c*nchan + 0] = color; - pixels[r*stride + c*nchan + 1] = color; - pixels[r*stride + c*nchan + 2] = color; - if (nchan == 4) - pixels[r*stride + c*nchan + 3] = 128; + //guchar color = (float)(MAX(value,0))/8848 * 255; + pixels[r][c][0] = color; + pixels[r][c][1] = color; + pixels[r][c][2] = color; + pixels[r][c][3] = 0xff; } } - g_debug("GisPluginElev: load_pixbuf %p", pixbuf); - return pixbuf; -} -static guint _load_opengl(GdkPixbuf *pixbuf) -{ - /* Load image */ - guchar *pixels = gdk_pixbuf_get_pixels(pixbuf); - gint alpha = gdk_pixbuf_get_has_alpha(pixbuf); - gint nchan = 4; // gdk_pixbuf_get_n_channels(pixbuf); - gint width = gdk_pixbuf_get_width(pixbuf); - gint height = gdk_pixbuf_get_height(pixbuf); - - /* Create Texture */ - guint opengl; - glGenTextures(1, &opengl); - glBindTexture(GL_TEXTURE_2D, opengl); - - glPixelStorei(GL_UNPACK_ALIGNMENT, 1); - glPixelStorei(GL_PACK_ALIGNMENT, 1); - glTexImage2D(GL_TEXTURE_2D, 0, nchan, width, height, 0, - (alpha ? GL_RGBA : GL_RGB), GL_UNSIGNED_BYTE, pixels); - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP); - - g_debug("GisPluginElev: load_opengl %d", opengl); - return opengl; + + g_debug("GritsPluginElev: load_pixels %p", pixels); + return (guchar*)pixels; } -static gboolean _load_tile_cb(gpointer _load) + +static gboolean _load_tile_cb(gpointer _data) { - struct _LoadTileData *load = _load; - g_debug("GisPluginElev: _load_tile_cb: %s", load->path); - GisPluginElev *elev = load->elev; - GisTile *tile = load->tile; - GdkPixbuf *pixbuf = load->pixbuf; - struct _TileData *data = load->data; - g_free(load->path); - g_free(load); - - if (LOAD_OPENGL) - data->opengl = _load_opengl(pixbuf); - - tile->data = data; - - /* Do necessasairy processing */ - /* TODO: Lock this and move to thread, can remove elev from _load then */ - if (LOAD_BIL) - gis_viewer_set_height_func(elev->viewer, &tile->edge, _height_func, elev, TRUE); + struct _LoadTileData *data = _data; + struct _TileData *tdata = data->tdata; + g_debug("GritsPluginElev: _load_tile_cb start"); + if (data->elev->aborted) { + g_debug("GritsPluginElev: _load_tile - aborted"); + return FALSE; + } - /* Cleanup unneeded things */ - if (!LOAD_BIL) - g_free(data->bil); - if (LOAD_OPENGL) - g_object_unref(pixbuf); + /* Load OpenGL texture (from main thread) */ + if (data->pixels) { + glGenTextures(1, &tdata->tex); + glBindTexture(GL_TEXTURE_2D, tdata->tex); + + glPixelStorei(GL_UNPACK_ALIGNMENT, 1); + glPixelStorei(GL_PACK_ALIGNMENT, 1); + glTexImage2D(GL_TEXTURE_2D, 0, TILE_CHANNELS, TILE_WIDTH, TILE_HEIGHT, 0, + GL_RGBA, GL_UNSIGNED_BYTE, data->pixels); + glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); + glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); + glFlush(); + } + /* Set hight function (from main thread) */ + if (tdata->bil) { + grits_viewer_set_height_func(data->elev->viewer, &data->tile->edge, + _height_func, data->elev, TRUE); + } + + /* Queue tiles for drawing */ + data->tile->data = tdata; + gtk_widget_queue_draw(GTK_WIDGET(data->elev->viewer)); + + /* Cleanup */ + g_free(data->pixels); + g_free(data); return FALSE; } -static void _load_tile(GisTile *tile, gpointer _elev) + +static void _load_tile(GritsTile *tile, gpointer _elev) { - GisPluginElev *elev = _elev; - - struct _LoadTileData *load = g_new0(struct _LoadTileData, 1); - load->path = gis_wms_fetch(elev->wms, tile, GIS_ONCE, NULL, NULL); - g_debug("GisPluginElev: _load_tile: %s", load->path); - load->elev = elev; - load->tile = tile; - load->data = g_new0(struct _TileData, 1); - if (LOAD_BIL || LOAD_OPENGL) { - load->data->bil = _load_bil(load->path); - if (!load->data->bil) { - g_remove(load->path); - g_free(load->data); - g_free(load->path); - g_free(load); - return; - } - } - if (LOAD_OPENGL) { - load->pixbuf = _load_pixbuf(load->data->bil); + GritsPluginElev *elev = _elev; + guint16 *bil = NULL; + guchar *pixels = NULL; + + g_debug("GritsPluginElev: _load_tile start %p", g_thread_self()); + if (elev->aborted) { + g_debug("GritsPluginElev: _load_tile - aborted"); + return; } - g_idle_add_full(G_PRIORITY_LOW, _load_tile_cb, load, NULL); + /* Download tile */ + gchar *path = grits_wms_fetch(elev->wms, tile, GRITS_ONCE, NULL, NULL); + if (!path) return; + + /* Load bil */ + bil = _load_bil(path); + g_free(path); + if (!bil) return; + + /* Load pixels */ + if (LOAD_TEX) + pixels = _load_pixels(bil); + if (!LOAD_BIL) + g_free(bil); + + /* Copy pixbuf data for callback */ + struct _LoadTileData *data = g_new0(struct _LoadTileData, 1); + struct _TileData *tdata = g_new0(struct _TileData, 1); + data->elev = elev; + data->tile = tile; + data->pixels = pixels; + data->tdata = tdata; + tdata->tex = 0; + tdata->bil = bil; + + /* Load the GL texture from the main thread */ + g_idle_add_full(G_PRIORITY_LOW, _load_tile_cb, data, NULL); + g_debug("GritsPluginElev: _load_tile end %p", g_thread_self()); } static gboolean _free_tile_cb(gpointer _data) @@ -230,77 +238,67 @@ static gboolean _free_tile_cb(gpointer _data) struct _TileData *data = _data; if (LOAD_BIL) g_free(data->bil); - if (LOAD_OPENGL) - glDeleteTextures(1, &data->opengl); + if (LOAD_TEX) + glDeleteTextures(1, &data->tex); g_free(data); return FALSE; } -static void _free_tile(GisTile *tile, gpointer _elev) +static void _free_tile(GritsTile *tile, gpointer _elev) { - g_debug("GisPluginElev: _free_tile: %p", tile->data); + g_debug("GritsPluginElev: _free_tile: %p", tile->data); if (tile->data) g_idle_add_full(G_PRIORITY_LOW, _free_tile_cb, tile->data, NULL); } -static gpointer _update_tiles(gpointer _elev) +static void _update_tiles(gpointer _, gpointer _elev) { - GisPluginElev *elev = _elev; - if (!g_mutex_trylock(elev->mutex)) - return NULL; - GisPoint eye; - gis_viewer_get_location(elev->viewer, &eye.lat, &eye.lon, &eye.elev); - gis_tile_update(elev->tiles, &eye, + g_debug("GritsPluginElev: _update_tiles"); + GritsPluginElev *elev = _elev; + GritsPoint eye; + grits_viewer_get_location(elev->viewer, &eye.lat, &eye.lon, &eye.elev); + grits_tile_update(elev->tiles, &eye, MAX_RESOLUTION, TILE_WIDTH, TILE_WIDTH, _load_tile, elev); - gis_tile_gc(elev->tiles, time(NULL)-10, + grits_tile_gc(elev->tiles, time(NULL)-10, _free_tile, elev); - g_mutex_unlock(elev->mutex); - return NULL; } /************* * Callbacks * *************/ -static void _on_location_changed(GisViewer *viewer, - gdouble lat, gdouble lon, gdouble elevation, GisPluginElev *elev) +static void _on_location_changed(GritsViewer *viewer, + gdouble lat, gdouble lon, gdouble elevation, GritsPluginElev *elev) { - g_thread_create(_update_tiles, elev, FALSE, NULL); -} - -static gpointer _threaded_init(GisPluginElev *elev) -{ - _load_tile(elev->tiles, elev); - _update_tiles(elev); - return NULL; + g_thread_pool_push(elev->threads, NULL+1, NULL); } /*********** * Methods * ***********/ /** - * gis_plugin_elev_new: - * @viewer: the #GisViewer to use for drawing + * grits_plugin_elev_new: + * @viewer: the #GritsViewer to use for drawing * * Create a new instance of the elevation plugin. * - * Returns: the new #GisPluginElev + * Returns: the new #GritsPluginElev */ -GisPluginElev *gis_plugin_elev_new(GisViewer *viewer) +GritsPluginElev *grits_plugin_elev_new(GritsViewer *viewer) { - g_debug("GisPluginElev: new"); - GisPluginElev *elev = g_object_new(GIS_TYPE_PLUGIN_ELEV, NULL); + g_debug("GritsPluginElev: new"); + GritsPluginElev *elev = g_object_new(GRITS_TYPE_PLUGIN_ELEV, NULL); elev->viewer = g_object_ref(viewer); /* Load initial tiles */ - g_thread_create((GThreadFunc)_threaded_init, elev, FALSE, NULL); + _update_tiles(NULL, elev); /* Connect signals */ elev->sigid = g_signal_connect(elev->viewer, "location-changed", G_CALLBACK(_on_location_changed), elev); /* Add renderers */ - if (LOAD_OPENGL) - gis_viewer_add(viewer, GIS_OBJECT(elev->tiles), GIS_LEVEL_WORLD, 0); + if (LOAD_TEX) + grits_viewer_add(viewer, GRITS_OBJECT(elev->tiles), GRITS_LEVEL_WORLD, FALSE); return elev; } @@ -310,55 +308,64 @@ GisPluginElev *gis_plugin_elev_new(GisViewer *viewer) * GObject code * ****************/ /* Plugin init */ -static void gis_plugin_elev_plugin_init(GisPluginInterface *iface); -G_DEFINE_TYPE_WITH_CODE(GisPluginElev, gis_plugin_elev, G_TYPE_OBJECT, - G_IMPLEMENT_INTERFACE(GIS_TYPE_PLUGIN, - gis_plugin_elev_plugin_init)); -static void gis_plugin_elev_plugin_init(GisPluginInterface *iface) +static void grits_plugin_elev_plugin_init(GritsPluginInterface *iface); +G_DEFINE_TYPE_WITH_CODE(GritsPluginElev, grits_plugin_elev, G_TYPE_OBJECT, + G_IMPLEMENT_INTERFACE(GRITS_TYPE_PLUGIN, + grits_plugin_elev_plugin_init)); +static void grits_plugin_elev_plugin_init(GritsPluginInterface *iface) { - g_debug("GisPluginElev: plugin_init"); + g_debug("GritsPluginElev: plugin_init"); /* Add methods to the interface */ } /* Class/Object init */ -static void gis_plugin_elev_init(GisPluginElev *elev) +static void grits_plugin_elev_init(GritsPluginElev *elev) { - g_debug("GisPluginElev: init"); + g_debug("GritsPluginElev: init"); /* Set defaults */ - elev->mutex = g_mutex_new(); - elev->tiles = gis_tile_new(NULL, NORTH, SOUTH, EAST, WEST); - elev->wms = gis_wms_new( - "http://www.nasa.network.com/elev", "srtm30", "application/bil", + elev->threads = g_thread_pool_new(_update_tiles, elev, 1, FALSE, NULL); + elev->tiles = grits_tile_new(NULL, NORTH, SOUTH, EAST, WEST); + elev->wms = grits_wms_new( + "http://www.nasa.network.com/elev", "mergedSrtm", "application/bil", "srtm/", "bil", TILE_WIDTH, TILE_HEIGHT); + g_object_ref(elev->tiles); } -static void gis_plugin_elev_dispose(GObject *gobject) +static void grits_plugin_elev_dispose(GObject *gobject) { - g_debug("GisPluginElev: dispose"); - GisPluginElev *elev = GIS_PLUGIN_ELEV(gobject); + g_debug("GritsPluginElev: dispose"); + GritsPluginElev *elev = GRITS_PLUGIN_ELEV(gobject); + elev->aborted = TRUE; /* Drop references */ - if (LOAD_BIL) - gis_viewer_clear_height_func(elev->viewer); if (elev->viewer) { - g_signal_handler_disconnect(elev->viewer, elev->sigid); - g_object_unref(elev->viewer); + GritsViewer *viewer = elev->viewer; elev->viewer = NULL; + g_signal_handler_disconnect(viewer, elev->sigid); + if (LOAD_BIL) + grits_viewer_clear_height_func(viewer); + if (LOAD_TEX) + grits_viewer_remove(viewer, GRITS_OBJECT(elev->tiles)); + g_object_unref(elev->tiles); + soup_session_abort(elev->wms->http->soup); + g_thread_pool_free(elev->threads, TRUE, TRUE); + while (gtk_events_pending()) + gtk_main_iteration(); + g_object_unref(viewer); } - G_OBJECT_CLASS(gis_plugin_elev_parent_class)->dispose(gobject); + G_OBJECT_CLASS(grits_plugin_elev_parent_class)->dispose(gobject); } -static void gis_plugin_elev_finalize(GObject *gobject) +static void grits_plugin_elev_finalize(GObject *gobject) { - g_debug("GisPluginElev: finalize"); - GisPluginElev *elev = GIS_PLUGIN_ELEV(gobject); + g_debug("GritsPluginElev: finalize"); + GritsPluginElev *elev = GRITS_PLUGIN_ELEV(gobject); /* Free data */ - gis_tile_free(elev->tiles, _free_tile, elev); - gis_wms_free(elev->wms); - g_mutex_free(elev->mutex); - G_OBJECT_CLASS(gis_plugin_elev_parent_class)->finalize(gobject); + grits_wms_free(elev->wms); + grits_tile_free(elev->tiles, _free_tile, elev); + G_OBJECT_CLASS(grits_plugin_elev_parent_class)->finalize(gobject); } -static void gis_plugin_elev_class_init(GisPluginElevClass *klass) +static void grits_plugin_elev_class_init(GritsPluginElevClass *klass) { - g_debug("GisPluginElev: class_init"); + g_debug("GritsPluginElev: class_init"); GObjectClass *gobject_class = (GObjectClass*)klass; - gobject_class->dispose = gis_plugin_elev_dispose; - gobject_class->finalize = gis_plugin_elev_finalize; + gobject_class->dispose = grits_plugin_elev_dispose; + gobject_class->finalize = grits_plugin_elev_finalize; }