1 files changed, 699 insertions, 0 deletions

diff --git a/libraries/evas/src/modules/engines/software_8_x11/evas_engine.c b/libraries/evas/src/modules/engines/software_8_x11/evas_engine.c
new file mode 100644
index 0000000..c8efb24
--- /dev/null
+++ b/libraries/evas/src/modules/engines/software_8_x11/evas_engine.c
@@ -0,0 +1,699 @@
+#include "evas_common.h"
+#include "evas_private.h"
+#include "evas_engine.h"
+#include "Evas_Engine_Software_8_X11.h"
+#include "evas_common_soft8.h"
+#include <pixman.h>
+
+int _evas_engine_soft8_x11_log_dom = -1;
+/* function tables - filled in later (func and parent func) */
+static Evas_Func func, pfunc;
+
+/* engine struct data */
+typedef struct _Render_Engine Render_Engine;
+
+struct _Render_Engine {
+   xcb_connection_t *connection;
+   xcb_drawable_t drawable;
+   xcb_screen_t *screen;
+   unsigned char pal[256];
+   int depth;
+
+   int w, h, rot;
+   Tilebuf *tb;
+   Tilebuf_Rect *rects;
+   Tilebuf_Rect *cur_rect;
+
+   X_Output_Buffer *shbuf;
+   Soft8_Image *tmp_out;        /* used by indirect render, like rotation */
+
+   pixman_region16_t *clip_rects;
+   unsigned char end:1;
+   unsigned char shm:1;
+};
+
+/* prototypes we will use here */
+
+static void *eng_info(Evas * e);
+static void eng_info_free(Evas * e, void *info);
+static int eng_setup(Evas * e, void *info);
+static void eng_output_free(void *data);
+static void eng_output_resize(void *data, int w, int h);
+static void eng_output_tile_size_set(void *data, int w, int h);
+static void eng_output_redraws_rect_add(void *data, int x, int y, int w, int h);
+static void eng_output_redraws_rect_del(void *data, int x, int y, int w, int h);
+static void eng_output_redraws_clear(void *data);
+static void *eng_output_redraws_next_update_get(void *data, int *x, int *y,
+                                                int *w, int *h, int *cx,
+                                                int *cy, int *cw, int *ch);
+static void eng_output_redraws_next_update_push(void *data, void *surface,
+                                                int x, int y, int w, int h);
+static void eng_output_flush(void *data);
+static void eng_output_idle_flush(void *data);
+
+/* engine api this module provides */
+static void *
+eng_info(Evas * e)
+{
+   Evas_Engine_Info_Software_8_X11 *info;
+
+   info = calloc(1, sizeof(Evas_Engine_Info_Software_8_X11));
+   if (!info)
+      return NULL;
+   info->magic.magic = rand();
+   info->render_mode = EVAS_RENDER_MODE_BLOCKING;
+   return info;
+   e = NULL;
+}
+
+static void
+eng_info_free(Evas * e __UNUSED__, void *info)
+{
+   Evas_Engine_Info_Software_8_X11 *in;
+   in = (Evas_Engine_Info_Software_8_X11 *) info;
+   free(in);
+}
+
+static void
+_tmp_out_alloc(Render_Engine * re)
+{
+   Tilebuf_Rect *r;
+   unsigned int w = 0, h = 0;
+
+   EINA_INLIST_FOREACH(re->rects, r)
+   {
+      if (r->w > (int)w)
+         w = r->w;
+      if (r->h > (int)h)
+         h = r->h;
+   }
+
+   if (re->tmp_out)
+     {
+        if ((re->tmp_out->cache_entry.w < w)
+            || (re->tmp_out->cache_entry.h < h))
+          {
+             evas_cache_image_drop(&re->tmp_out->cache_entry);
+             re->tmp_out = NULL;
+          }
+     }
+
+   if (!re->tmp_out)
+     {
+        Soft8_Image *im;
+
+        im = (Soft8_Image *)
+            evas_cache_image_empty(evas_common_soft8_image_cache_get());
+        im->cache_entry.flags.alpha = 0;
+        evas_cache_image_surface_alloc(&im->cache_entry, w, h);
+
+        re->tmp_out = im;
+     }
+}
+
+static void
+alloc_colors(Render_Engine * re)
+{
+   xcb_alloc_color_cookie_t color_rq[256];
+   xcb_alloc_color_reply_t *rep;
+   xcb_colormap_t colormap = re->screen->default_colormap;
+
+   int i;
+   for (i = 0; i < 256; i++)
+      color_rq[i] =
+          xcb_alloc_color(re->connection, colormap, i << 8, i << 8, i << 8);
+
+   for (i = 0; i < 256; i++)
+     {
+        rep = xcb_alloc_color_reply(re->connection, color_rq[i], NULL);
+        re->pal[i] = rep->pixel;
+        free(rep);
+     }
+}
+
+static int
+eng_setup(Evas * e, void *in)
+{
+   Render_Engine *re;
+   Evas_Engine_Info_Software_8_X11 *info;
+/*    X_Output_Buffer *xob; */
+
+   info = (Evas_Engine_Info_Software_8_X11 *) in;
+   if (!e->engine.data.output)
+     {
+        /* the only check - simplistic, i know, but enough for this
+         * "special purpose" engine. Remember it is meant to be used
+         * for limited power devices that have a 8bit display mode
+         * and no real other acceleration, and high resolution so we
+         * can pre-dither into 8bpp. */
+//      if (DefaultDepth(info->info.display,
+//                       DefaultScreen(info->info.display)) != 8)
+//        return;
+        /* do common routine init - we wil at least use it for core
+         * image loading and font loading/glyph rendering & placement */
+        evas_common_cpu_init();
+
+        evas_common_blend_init();
+        evas_common_image_init();
+        evas_common_convert_init();
+        evas_common_scale_init();
+        evas_common_rectangle_init();
+        evas_common_polygon_init();
+        evas_common_line_init();
+        evas_common_font_init();
+        evas_common_draw_init();
+        evas_common_tilebuf_init();
+        evas_common_soft8_image_init();
+
+        /* render engine specific data */
+        re = calloc(1, sizeof(Render_Engine));
+        if (!re)
+           return 0;
+        e->engine.data.output = re;
+        re->connection = info->info.connection;
+        re->screen = info->info.screen;
+        re->drawable = info->info.drawable;
+        re->depth = info->info.depth;
+        re->w = e->output.w;
+        re->h = e->output.h;
+        re->rot = info->info.rotation;
+        re->tb = evas_common_tilebuf_new(e->output.w, e->output.h);
+        if (re->tb)
+           evas_common_tilebuf_set_tile_size(re->tb, TILESIZE, TILESIZE);
+        alloc_colors(re);
+     }
+   else
+     {
+        /* we changed the info after first init - do a re-eval where
+         * appropriate */
+        re = e->engine.data.output;
+        if (re->tb)
+           evas_common_tilebuf_free(re->tb);
+        re->connection = info->info.connection;
+        re->screen = info->info.screen;
+        re->drawable = info->info.drawable;
+        re->w = e->output.w;
+        re->h = e->output.h;
+        re->rot = info->info.rotation;
+        re->tb = evas_common_tilebuf_new(e->output.w, e->output.h);
+        if (re->tb)
+           evas_common_tilebuf_set_tile_size(re->tb, TILESIZE, TILESIZE);
+        if (re->tmp_out)
+          {
+             evas_cache_image_drop(&re->tmp_out->cache_entry);
+             re->tmp_out = NULL;
+          }
+        alloc_colors(re);
+     }
+   if (!e->engine.data.output)
+      return 0;
+
+   /* add a draw context if we dont have one */
+   if (!e->engine.data.context)
+      e->engine.data.context =
+          e->engine.func->context_new(e->engine.data.output);
+   /* check if the display can do shm */
+   re->shm = evas_software_8_x11_x_can_do_shm(re->connection, re->screen);
+
+   return 1;
+}
+
+static void
+eng_output_free(void *data)
+{
+   Render_Engine *re;
+
+   re = (Render_Engine *) data;
+   if (re->shbuf)
+      evas_software_8_x11_x_output_buffer_free(re->shbuf, 0);
+   if (re->clip_rects)
+     {
+        pixman_region_fini(re->clip_rects);
+        free(re->clip_rects);
+        re->clip_rects = NULL;
+     }
+   if (re->tb)
+      evas_common_tilebuf_free(re->tb);
+   if (re->rects)
+      evas_common_tilebuf_free_render_rects(re->rects);
+   if (re->tmp_out)
+      evas_cache_image_drop(&re->tmp_out->cache_entry);
+   free(re);
+
+   evas_common_font_shutdown();
+   evas_common_image_shutdown();
+   evas_common_soft8_image_shutdown();
+}
+
+static void
+eng_output_resize(void *data, int w, int h)
+{
+   Render_Engine *re;
+
+   re = (Render_Engine *) data;
+
+   if ((re->w == w) && (re->h == h))
+      return;
+
+   evas_common_tilebuf_free(re->tb);
+   re->w = w;
+   re->h = h;
+   re->tb = evas_common_tilebuf_new(w, h);
+   if (re->tb)
+      evas_common_tilebuf_set_tile_size(re->tb, TILESIZE, TILESIZE);
+   if (re->shbuf)
+     {
+        evas_software_8_x11_x_output_buffer_free(re->shbuf, 0);
+        re->shbuf = NULL;
+     }
+   if (re->clip_rects)
+     {
+        pixman_region_fini(re->clip_rects);
+        free(re->clip_rects);
+        re->clip_rects = NULL;
+     }
+
+   if (re->tmp_out)
+     {
+        evas_cache_image_drop(&re->tmp_out->cache_entry);
+        re->tmp_out = NULL;
+     }
+}
+
+static void
+eng_output_tile_size_set(void *data, int w, int h)
+{
+   Render_Engine *re;
+
+   re = (Render_Engine *) data;
+   evas_common_tilebuf_set_tile_size(re->tb, w, h);
+}
+
+static void
+eng_output_redraws_rect_add(void *data, int x, int y, int w, int h)
+{
+   Render_Engine *re;
+
+   re = (Render_Engine *) data;
+   evas_common_tilebuf_add_redraw(re->tb, x, y, w, h);
+}
+
+static void
+eng_output_redraws_rect_del(void *data, int x, int y, int w, int h)
+{
+   Render_Engine *re;
+
+   re = (Render_Engine *) data;
+   evas_common_tilebuf_del_redraw(re->tb, x, y, w, h);
+}
+
+static void
+eng_output_redraws_clear(void *data)
+{
+   Render_Engine *re;
+
+   re = (Render_Engine *) data;
+   evas_common_tilebuf_clear(re->tb);
+}
+
+static inline void
+_output_buffer_alloc(Render_Engine * re)
+{
+   int w, h;
+   if (re->shbuf)
+      return;
+
+   if ((re->rot == 0) || (re->rot == 180))
+     {
+        w = re->w;
+        h = re->h;
+     }
+   else
+     {
+        w = re->h;
+        h = re->w;
+     }
+
+   re->shbuf = evas_software_8_x11_x_output_buffer_new
+       (re->connection, re->screen, re->depth, re->pal, w, h, 1, NULL);
+
+   re->shbuf->drawable = re->drawable;
+   re->shbuf->screen = re->screen;
+   if (re->shbuf->gc)
+     {
+        xcb_free_gc(re->shbuf->connection, re->shbuf->gc);
+        re->shbuf->gc = 0;
+     }
+
+   re->shbuf->gc = xcb_generate_id(re->shbuf->connection);
+   xcb_create_gc(re->shbuf->connection, re->shbuf->gc, re->shbuf->drawable, 0,
+                 NULL);
+}
+
+static void *
+eng_output_redraws_next_update_get(void *data, int *x, int *y, int *w, int *h,
+                                   int *cx, int *cy, int *cw, int *ch)
+{
+   Render_Engine *re;
+   Tilebuf_Rect *rect;
+   int ux, uy, uw, uh;
+
+   re = (Render_Engine *) data;
+   if (re->end)
+     {
+        re->end = 0;
+        return NULL;
+     }
+   if (!re->rects)
+     {
+        re->rects = evas_common_tilebuf_get_render_rects(re->tb);
+        if (!re->rects)
+           return NULL;
+
+        re->cur_rect = re->rects;
+        _output_buffer_alloc(re);
+        if (re->rot != 0)
+           _tmp_out_alloc(re);  /* grows if required */
+     }
+   if (!re->cur_rect)
+     {
+        if (re->rects)
+           evas_common_tilebuf_free_render_rects(re->rects);
+        re->rects = NULL;
+        return NULL;
+     }
+   rect = re->cur_rect;
+   ux = rect->x;
+   uy = rect->y;
+   uw = rect->w;
+   uh = rect->h;
+   re->cur_rect = (Tilebuf_Rect *) ((EINA_INLIST_GET(re->cur_rect))->next);
+   if (!re->cur_rect)
+     {
+        evas_common_tilebuf_free_render_rects(re->rects);
+        re->rects = NULL;
+        re->end = 1;
+     }
+
+   *x = ux;
+   *y = uy;
+   *w = uw;
+   *h = uh;
+   if (re->rot == 0)
+     {
+        *cx = ux;
+        *cy = uy;
+        *cw = uw;
+        *ch = uh;
+        return re->shbuf->im;
+     }
+   else
+     {
+        *cx = 0;
+        *cy = 0;
+        *cw = uw;
+        *ch = uh;
+        return re->tmp_out;
+     }
+}
+
+static void
+_blit_rot_90(Soft8_Image * dst, const Soft8_Image * src,
+             int out_x, int out_y, int w, int h)
+{
+   DATA8 *dp, *sp;
+   int x, y;
+
+   sp = src->pixels;
+   dp = dst->pixels + (out_x + (w + out_y - 1) * dst->stride);
+
+   for (y = 0; y < h; y++)
+     {
+        DATA8 *dp_itr, *sp_itr;
+
+        sp_itr = sp;
+        dp_itr = dp;
+
+        for (x = 0; x < w; x++)
+          {
+             *dp_itr = *sp_itr;
+
+             sp_itr++;
+             dp_itr -= dst->stride;
+          }
+        sp += src->stride;
+        dp++;
+     }
+}
+
+static void
+_blit_rot_180(Soft8_Image * dst, const Soft8_Image * src,
+              int out_x, int out_y, int w, int h)
+{
+   DATA8 *dp, *sp;
+   int x, y;
+
+   sp = src->pixels;
+   dp = dst->pixels + ((w + out_x - 1) + (h + out_y - 1) * dst->stride);
+
+   for (y = 0; y < h; y++)
+     {
+        DATA8 *dp_itr, *sp_itr;
+
+        sp_itr = sp;
+        dp_itr = dp;
+
+        for (x = 0; x < w; x++)
+          {
+             *dp_itr = *sp_itr;
+
+             sp_itr++;
+             dp_itr--;
+          }
+        sp += src->stride;
+        dp -= dst->stride;
+     }
+}
+
+static void
+_blit_rot_270(Soft8_Image * dst, const Soft8_Image * src,
+              int out_x, int out_y, int w, int h)
+{
+   DATA8 *dp, *sp;
+   int x, y;
+
+   sp = src->pixels;
+   dp = dst->pixels + ((h + out_x - 1) + out_y * dst->stride);
+
+   for (y = 0; y < h; y++)
+     {
+        DATA8 *dp_itr, *sp_itr;
+
+        sp_itr = sp;
+        dp_itr = dp;
+
+        for (x = 0; x < w; x++)
+          {
+             *dp_itr = *sp_itr;
+
+             sp_itr++;
+             dp_itr += dst->stride;
+          }
+        sp += src->stride;
+        dp--;
+     }
+}
+
+static void
+_tmp_out_process(Render_Engine * re, int out_x, int out_y, int w, int h)
+{
+   Soft8_Image *d, *s;
+
+   d = re->shbuf->im;
+   s = re->tmp_out;
+
+   if ((w < 1) || (h < 1) ||
+       (out_x >= (int)d->cache_entry.w) ||
+       (out_y >= (int)d->cache_entry.h))
+      return;
+
+   if (re->rot == 90)
+      _blit_rot_90(d, s, out_x, out_y, w, h);
+   else if (re->rot == 180)
+      _blit_rot_180(d, s, out_x, out_y, w, h);
+   else if (re->rot == 270)
+      _blit_rot_270(d, s, out_x, out_y, w, h);
+}
+
+static void
+eng_output_redraws_next_update_push(void *data, void *surface __UNUSED__, int x,
+                                    int y, int w, int h)
+{
+   Render_Engine *re;
+   struct {
+      int x, y, width, height;
+   } r =
+   {
+   0, 0, 0, 0};
+
+   re = (Render_Engine *) data;
+
+   if (!re->clip_rects)
+     {
+        re->clip_rects =
+            (pixman_region16_t *) malloc(sizeof(pixman_region16_t));
+        pixman_region_init(re->clip_rects);
+     }
+
+   if (re->rot == 0)
+     {
+        r.x = x;
+        r.y = y;
+        r.width = w;
+        r.height = h;
+     }
+   else if (re->rot == 90)
+     {
+        r.x = y;
+        r.y = re->w - w - x;
+        r.width = h;
+        r.height = w;
+     }
+   else if (re->rot == 180)
+     {
+        r.x = re->w - w - x;
+        r.y = re->h - h - y;
+        r.width = w;
+        r.height = h;
+     }
+   else if (re->rot == 270)
+     {
+        r.x = re->h - h - y;
+        r.y = x;
+        r.width = h;
+        r.height = w;
+     }
+
+   if (re->rot != 0)
+      _tmp_out_process(re, r.x, r.y, w, h);
+
+   pixman_region_union_rect(re->clip_rects, re->clip_rects,
+                            r.x, r.y, r.width, r.height);
+}
+
+static void
+eng_output_flush(void *data)
+{
+   Render_Engine *re;
+
+   re = (Render_Engine *) data;
+
+   if (re->clip_rects)
+     {
+        re->shbuf->drawable = re->drawable;
+        {
+           int i;
+           pixman_box16_t *rects =
+               pixman_region_rectangles(re->clip_rects, NULL);
+           for (i = 0; i < pixman_region_n_rects(re->clip_rects); i++, rects++)
+              evas_software_8_x11_x_output_buffer_paste
+                  (re->shbuf, re->drawable, re->shbuf->gc, rects->x1, rects->y1,
+                   rects->x2 - rects->x1, rects->y2 - rects->y1, 1);
+        }
+
+        pixman_region_fini(re->clip_rects);
+        free(re->clip_rects);
+        re->clip_rects = NULL;
+     }
+}
+
+static void
+eng_output_idle_flush(void *data)
+{
+   Render_Engine *re;
+
+   re = (Render_Engine *) data;
+   if (re->shbuf)
+     {
+        evas_software_8_x11_x_output_buffer_free(re->shbuf, 0);
+        re->shbuf = NULL;
+     }
+   if (re->clip_rects)
+     {
+        pixman_region_fini(re->clip_rects);
+        free(re->clip_rects);
+        re->clip_rects = NULL;
+     }
+   if (re->tmp_out)
+     {
+        evas_cache_image_drop(&re->tmp_out->cache_entry);
+        re->tmp_out = NULL;
+     }
+}
+
+static Eina_Bool
+eng_canvas_alpha_get(void *data __UNUSED__, void *context __UNUSED__)
+{
+   return EINA_FALSE;
+}
+
+/* module advertising code */
+static int
+module_open(Evas_Module * em)
+{
+   if (!em)
+      return 0;
+   /* get whatever engine module we inherit from */
+   if (!_evas_module_engine_inherit(&pfunc, "software_8"))
+      return 0;
+   _evas_engine_soft8_x11_log_dom = eina_log_domain_register
+     ("evas-software_8_x11", EVAS_DEFAULT_LOG_COLOR);
+   if (_evas_engine_soft8_x11_log_dom < 0)
+     {
+        EINA_LOG_ERR("Can not create a module log domain.");
+        return 0;
+     }
+
+   /* store it for later use */
+   func = pfunc;
+   /* now to override methods */
+#define ORD(f) EVAS_API_OVERRIDE(f, &func, eng_)
+   ORD(info);
+   ORD(info_free);
+   ORD(setup);
+   ORD(canvas_alpha_get);
+   ORD(output_free);
+   ORD(output_resize);
+   ORD(output_tile_size_set);
+   ORD(output_redraws_rect_add);
+   ORD(output_redraws_rect_del);
+   ORD(output_redraws_clear);
+   ORD(output_redraws_next_update_get);
+   ORD(output_redraws_next_update_push);
+   ORD(output_flush);
+   ORD(output_idle_flush);
+   /* now advertise out own api */
+   em->functions = (void *)(&func);
+   return 1;
+}
+
+static void
+module_close(Evas_Module * em __UNUSED__)
+{
+   eina_log_domain_unregister(_evas_engine_soft8_x11_log_dom);
+}
+
+static Evas_Module_Api evas_modapi = {
+   EVAS_MODULE_API_VERSION,
+   "software_8_x11",
+   "none",
+   {
+    module_open,
+    module_close}
+};
+
+EVAS_MODULE_DEFINE(EVAS_MODULE_TYPE_ENGINE, engine, software_8_x11);
+
+#ifndef EVAS_STATIC_BUILD_SOFTWARE_8_X11
+EVAS_EINA_MODULE_DEFINE(engine, software_8_x11);
+#endif