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Diffstat (limited to 'modules/image_io/pdp_glx.c')
-rw-r--r--modules/image_io/pdp_glx.c558
1 files changed, 558 insertions, 0 deletions
diff --git a/modules/image_io/pdp_glx.c b/modules/image_io/pdp_glx.c
new file mode 100644
index 0000000..810912e
--- /dev/null
+++ b/modules/image_io/pdp_glx.c
@@ -0,0 +1,558 @@
+/*
+ * Pure Data Packet module.
+ * Copyright (c) by Tom Schouten <pdp@zzz.kotnet.org>
+ *
+ * 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
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+// gl stuff
+#include <GL/gl.h>
+#include <GL/glx.h>
+#include <GL/glu.h>
+//#include <GL/glut.h>
+
+// pdp stuff
+#include "pdp.h"
+#include "pdp_base.h"
+
+// some x window glue code
+#include "pdp_xwindow.h"
+
+// pdp stuff
+#include "pdp.h"
+#include "pdp_llconv.h"
+//#include "pdp_opengl.h"
+
+
+/* initial image dimensions */
+#define PDP_OGL_W 320
+#define PDP_OGL_H 240
+
+#define PDP_OGL_AUTOCREATE_RETRY 10
+
+
+typedef struct pdp_glx_struct
+{
+ t_object x_obj;
+
+ t_pdp_xwindow x_xwin;
+
+ t_outlet *x_outlet;
+
+ int x_packet0;
+ int x_queue_id;
+ t_symbol *x_display;
+
+ Display *x_dpy;
+
+ XVisualInfo *x_vis_info;
+ GLXContext x_glx_context;
+
+ GLuint x_texture;
+ u32 x_tex_width;
+ u32 x_tex_height;
+
+ unsigned char *x_data;
+ unsigned int x_width;
+ unsigned int x_height;
+ int x_last_encoding;
+
+ int x_initialized;
+ int x_autocreate;
+
+} t_pdp_glx;
+
+
+
+static void pdp_glx_cursor(t_pdp_glx *x, t_floatarg f)
+{
+ pdp_xwindow_cursor(&x->x_xwin, f);
+}
+
+static void pdp_glx_destroy(t_pdp_glx* x)
+{
+ t_pdp_procqueue *q = pdp_queue_get_queue();
+ XEvent e;
+
+ if (x->x_initialized){
+ pdp_procqueue_finish(q, x->x_queue_id);
+ x->x_queue_id = -1;
+ glXDestroyContext(x->x_dpy, x->x_glx_context);
+ pdp_xwindow_close(&x->x_xwin);
+ XCloseDisplay(x->x_dpy);
+ x->x_initialized = false;
+ }
+
+}
+
+
+static void pdp_glx_fullscreen(t_pdp_glx *x)
+{
+ pdp_xwindow_fullscreen(&x->x_xwin);
+}
+
+static void pdp_glx_resize(t_pdp_glx* x, t_floatarg width, t_floatarg height)
+{
+ pdp_xwindow_resize(&x->x_xwin, width, height);
+}
+
+static void pdp_glx_move(t_pdp_glx* x, t_floatarg width, t_floatarg height)
+{
+ pdp_xwindow_move(&x->x_xwin, width, height);
+}
+
+static void pdp_glx_moveresize(t_pdp_glx* x, t_floatarg xoff, t_floatarg yoff, t_floatarg width, t_floatarg height)
+{
+ pdp_xwindow_moveresize(&x->x_xwin, xoff, yoff, width, height);
+}
+
+static void pdp_glx_tile(t_pdp_glx* x, t_floatarg xtiles, t_floatarg ytiles, t_floatarg i, t_floatarg j)
+{
+ pdp_xwindow_tile(&x->x_xwin, xtiles, ytiles, i, j);
+}
+
+
+
+
+void pdp_glx_generate_texture(t_pdp_glx *x)
+{
+ u32 width = x->x_tex_width;
+ u32 height = x->x_tex_height;
+ u32 depth = 4;
+ u32 i;
+
+ u8 *dummydata = 0;
+
+ while (x->x_width > width) width <<= 1;
+ while (x->x_height > height) height <<= 1;
+
+ dummydata = (u8 *)pdp_alloc(width*height*depth);
+
+ for (i=0; i<width*height*depth; i++){dummydata[i] = random(); }
+
+ /* set window context current */
+ glXMakeCurrent(x->x_dpy, x->x_xwin.win, x->x_glx_context);
+
+ /* generate texture if necessary */
+ if (!glIsTexture(x->x_texture)) glGenTextures(1, &(x->x_texture));
+
+ glBindTexture(GL_TEXTURE_2D, x->x_texture);
+ glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, dummydata);
+
+ pdp_dealloc(dummydata);
+
+ x->x_tex_width = width;
+ x->x_tex_height = height;
+}
+
+void pdp_glx_regenerate_texture(t_pdp_glx *x)
+{
+ if ((x->x_width > x->x_tex_width) || (x->x_height > x->x_tex_height)) pdp_glx_generate_texture(x);
+
+}
+
+
+static void pdp_glx_create(t_pdp_glx* x)
+{
+ unsigned int *uintdata = (unsigned int *)(x->x_data);
+ XEvent e;
+ unsigned int i;
+ static int vis_attr[] = {GLX_RGBA, GLX_RED_SIZE, 4, GLX_GREEN_SIZE, 4, GLX_BLUE_SIZE, 4,
+ GLX_DEPTH_SIZE, 16, GLX_DOUBLEBUFFER, None};
+
+
+ if (x->x_initialized) return;
+
+ /* manually open a display */
+ if (NULL == (x->x_dpy = XOpenDisplay(x->x_display->s_name))){
+ post("pdp_glx: cant open display %s\n",x->x_display->s_name);
+ x->x_initialized = false;
+ return;
+ }
+
+ /* create a window on the display */
+ if (!(x->x_initialized = pdp_xwindow_create_on_display(&x->x_xwin, x->x_dpy)))
+ goto exit_close_dpy;
+
+
+ /* create a glx visual */
+ if (!(x->x_vis_info = glXChooseVisual(x->x_dpy, x->x_xwin.screen, vis_attr))){
+ post("pdp_glx: can't create visual");
+ goto exit_close_win;
+ }
+ //post("visual: %x", x->x_vis_info);
+
+ /* create the rendering context */
+ if (!(x->x_glx_context = glXCreateContext(x->x_dpy, x->x_vis_info, 0 /*share list*/, GL_TRUE))){
+ post("pdp_glx: can't create render context");
+ goto exit_close_win;
+ }
+ //post("context: %x", x->x_glx_context);
+
+
+ /* create texture */
+ pdp_glx_generate_texture(x);
+
+
+ /* we're done initializing */
+ x->x_initialized = true;
+
+ /* disable/enable cursor */
+ //pdp_glx_cursor(x, x->x_cursor);
+ return;
+
+
+ exit_close_win:
+ pdp_xwindow_close(&x->x_xwin);
+ exit_close_dpy:
+ XCloseDisplay(x->x_dpy);
+ x->x_initialized = false;
+ return;
+}
+
+static int pdp_glx_try_autocreate(t_pdp_glx *x)
+{
+
+ if (x->x_autocreate){
+ post("pdp_glx: autocreate window");
+ pdp_glx_create(x);
+ if (!(x->x_initialized)){
+ x->x_autocreate--;
+ if (!x->x_autocreate){
+ post ("pdp_glx: autocreate failed %d times: disabled", PDP_OGL_AUTOCREATE_RETRY);
+ post ("pdp_glx: send [autocreate 1] message to re-enable");
+ return 0;
+ }
+ }
+ else return 1;
+
+ }
+ return 0;
+}
+
+static void pdp_glx_bang(t_pdp_glx *x);
+
+static void pdp_glx_fill_texture(t_pdp_glx *x)
+{
+ t_pdp *header = pdp_packet_header(x->x_packet0);
+ void *data = pdp_packet_data (x->x_packet0);
+
+ int i = header->info.image.width;
+
+
+ /* ensure image buffer is correct dim */
+ if ((header->info.image.width != x->x_width)
+ || (header->info.image.height != x->x_height)) {
+ if (x->x_data) pdp_dealloc (x->x_data);
+ x->x_width = header->info.image.width;
+ x->x_height = header->info.image.height;
+ x->x_data = pdp_alloc(4*x->x_width*x->x_height);
+ }
+
+ /* ensure texture is correct dim */
+ pdp_glx_regenerate_texture(x);
+
+
+ /* set window context current */
+ glXMakeCurrent(x->x_dpy, x->x_xwin.win, x->x_glx_context);
+ glBindTexture(GL_TEXTURE_2D, x->x_texture);
+
+ switch (header->info.image.encoding){
+ case PDP_IMAGE_GREY:
+ /* convert image to greyscale 8 bit */
+ pdp_llconv(data,RIF_GREY______S16, x->x_data, RIF_GREY______U8, x->x_width, x->x_height);
+
+ /* upload grey subtexture */
+ glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, x->x_width, x->x_height, GL_LUMINANCE, GL_UNSIGNED_BYTE, x->x_data);
+
+ break;
+ case PDP_IMAGE_YV12:
+
+ /* convert image to rgb 8 bit */
+ pdp_llconv(data,RIF_YVU__P411_S16, x->x_data, RIF_RGB__P____U8, x->x_width, x->x_height);
+
+ /* upload subtexture */
+ glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, x->x_width, x->x_height, GL_RGB, GL_UNSIGNED_BYTE, x->x_data);
+
+ break;
+ default:
+ break;
+ }
+
+
+}
+
+static void pdp_glx_process(t_pdp_glx *x)
+{
+ t_pdp *header = pdp_packet_header(x->x_packet0);
+ void *data = pdp_packet_data (x->x_packet0);
+
+
+ if (-1 != x->x_queue_id) return;
+
+ /* check if window is initialized */
+ if (!(x->x_initialized)){
+ if (!pdp_glx_try_autocreate(x)) return;
+ }
+
+ /* check data packet */
+ if (!(header)) {
+ post("pdp_glx: invalid packet header");
+ return;
+ }
+ if (PDP_IMAGE != header->type) {
+ post("pdp_glx: packet is not a PDP_IMAGE");
+ return;
+ }
+ if ((PDP_IMAGE_YV12 != header->info.image.encoding)
+ && (PDP_IMAGE_GREY != header->info.image.encoding)) {
+ post("pdp_glx: packet is not a PDP_IMAGE_YV12/GREY");
+ return;
+ }
+
+
+ /* fill the texture with the data in the packet */
+ pdp_glx_fill_texture(x);
+
+ /* display the new image */
+ pdp_glx_bang(x);
+
+
+}
+
+
+
+static void pdp_glx_display_texture(t_pdp_glx *x)
+{
+ float fx = (float)x->x_width / x->x_tex_width;
+ float fy = (float)x->x_height / x->x_tex_height;
+
+ if (!x->x_initialized) return;
+
+ /* set window context current */
+ glXMakeCurrent(x->x_dpy, x->x_xwin.win, x->x_glx_context);
+
+ /* setup viewport, projection and modelview */
+ glViewport(0, 0, x->x_xwin.winwidth, x->x_xwin.winheight);
+ glMatrixMode(GL_PROJECTION);
+ glLoadIdentity();
+ gluOrtho2D(0.0, x->x_xwin.winwidth, 0.0, x->x_xwin.winheight);
+ glMatrixMode(GL_MODELVIEW);
+ glLoadIdentity();
+
+
+ /* enable default texture */
+ glEnable(GL_TEXTURE_2D);
+ glBindTexture(GL_TEXTURE_2D, x->x_texture);
+ glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
+ glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
+ glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR);
+ glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);
+ glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
+
+ /* display texture */
+ glBegin(GL_QUADS);
+ glTexCoord2f(fx, fy);
+ glVertex2i(x->x_xwin.winwidth,0);
+ glTexCoord2f(fx, 0);
+ glVertex2i(x->x_xwin.winwidth, x->x_xwin.winheight);
+ glTexCoord2f(0.0, 0.0);
+ glVertex2i(0, x->x_xwin.winheight);
+ glTexCoord2f(0, fy);
+ glVertex2i(0,0);
+ glEnd();
+
+
+ glFlush();
+ glXSwapBuffers(x->x_dpy,x->x_xwin.win);
+
+}
+
+
+
+/* redisplays image */
+static void pdp_glx_bang_thread(t_pdp_glx *x)
+{
+
+
+ pdp_glx_display_texture(x);
+ XFlush(x->x_dpy);
+
+}
+
+static void pdp_glx_bang_callback(t_pdp_glx *x)
+{
+ /* receive events & output them */
+ pdp_xwindow_send_events(&x->x_xwin, x->x_outlet);
+
+ /* release the packet if there is one */
+ pdp_packet_mark_unused(x->x_packet0);
+ x->x_packet0 = -1;}
+
+static void pdp_glx_bang(t_pdp_glx *x)
+{
+
+ /* check if window is initialized */
+ if (!(x->x_initialized)){
+ if (!pdp_glx_try_autocreate(x)) return;
+ }
+
+
+ /* if previous queued method returned
+ schedule a new one, else ignore */
+
+/*
+ if (-1 == x->x_queue_id) {
+ pdp_queue_add(x, pdp_glx_bang_thread, pdp_glx_bang_callback, &x->x_queue_id);
+ }
+*/
+ /* don't process in thread */
+ pdp_glx_bang_thread(x);
+ pdp_glx_bang_callback(x);
+
+}
+
+
+
+static void pdp_glx_input_0(t_pdp_glx *x, t_symbol *s, t_floatarg f)
+{
+
+ if (s == gensym("register_ro")) pdp_packet_copy_ro_or_drop(&x->x_packet0, (int)f);
+ if (s == gensym("process")) pdp_glx_process(x);
+}
+
+
+
+static void pdp_glx_vga(t_pdp_glx *x)
+{
+ pdp_glx_resize(x, 640, 480);
+}
+
+static void pdp_glx_autocreate(t_pdp_glx *x, t_floatarg f)
+{
+ if (f != 0.0f) x->x_autocreate = PDP_OGL_AUTOCREATE_RETRY;
+ else x->x_autocreate = 0;
+}
+
+static void pdp_glx_display(t_pdp_glx *x, t_symbol *s)
+{
+ t_pdp_procqueue *q = pdp_queue_get_queue();
+ pdp_procqueue_finish(q, x->x_queue_id);
+ x->x_queue_id = -1;
+ x->x_display = s;
+ if (x->x_initialized){
+ pdp_glx_destroy(x);
+ pdp_glx_create(x);
+ }
+}
+
+
+
+static void pdp_glx_free(t_pdp_glx *x)
+{
+ t_pdp_procqueue *q = pdp_queue_get_queue();
+ pdp_procqueue_finish(q, x->x_queue_id);
+ pdp_glx_destroy(x);
+ pdp_xwindow_free(&x->x_xwin);
+ if (x->x_data) pdp_dealloc (x->x_data);
+ pdp_packet_mark_unused(x->x_packet0);
+}
+
+t_class *pdp_glx_class;
+
+
+
+void *pdp_glx_new(void)
+{
+ t_pdp_glx *x = (t_pdp_glx *)pd_new(pdp_glx_class);
+
+ pdp_xwindow_init(&x->x_xwin);
+
+ x->x_outlet = outlet_new(&x->x_obj, &s_anything);
+
+ x->x_packet0 = -1;
+ x->x_queue_id = -1;
+ x->x_display = gensym(":0");
+
+ x->x_dpy = 0;
+
+ x->x_width = PDP_OGL_W;
+ x->x_height = PDP_OGL_H;
+
+ x->x_data = pdp_alloc(4*PDP_OGL_W*PDP_OGL_H);
+
+ x->x_initialized = 0;
+ pdp_glx_autocreate(x,1);
+ x->x_last_encoding = -1;
+
+ x->x_tex_width = 64;
+ x->x_tex_height = 64;
+
+ //pdp_glx_create(x);
+
+ return (void *)x;
+}
+
+
+
+
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+
+void pdp_glx_setup(void)
+{
+
+
+ pdp_glx_class = class_new(gensym("pdp_glx"), (t_newmethod)pdp_glx_new,
+ (t_method)pdp_glx_free, sizeof(t_pdp_glx), 0, A_NULL);
+
+ /* add creator for pdp_tex_win */
+
+ class_addmethod(pdp_glx_class, (t_method)pdp_glx_bang, gensym("bang"), A_NULL);
+ class_addmethod(pdp_glx_class, (t_method)pdp_glx_create, gensym("open"), A_NULL);
+ class_addmethod(pdp_glx_class, (t_method)pdp_glx_create, gensym("create"), A_NULL);
+ class_addmethod(pdp_glx_class, (t_method)pdp_glx_autocreate, gensym("autocreate"), A_FLOAT, A_NULL);
+ class_addmethod(pdp_glx_class, (t_method)pdp_glx_destroy, gensym("destroy"), A_NULL);
+ class_addmethod(pdp_glx_class, (t_method)pdp_glx_destroy, gensym("close"), A_NULL);
+ class_addmethod(pdp_glx_class, (t_method)pdp_glx_move, gensym("move"), A_FLOAT, A_FLOAT, A_NULL);
+ class_addmethod(pdp_glx_class, (t_method)pdp_glx_move, gensym("pos"), A_FLOAT, A_FLOAT, A_NULL);
+ class_addmethod(pdp_glx_class, (t_method)pdp_glx_resize, gensym("dim"), A_FLOAT, A_FLOAT, A_NULL);
+ class_addmethod(pdp_glx_class, (t_method)pdp_glx_resize, gensym("size"), A_FLOAT, A_FLOAT, A_NULL);
+ class_addmethod(pdp_glx_class, (t_method)pdp_glx_display, gensym("display"), A_SYMBOL, A_NULL);
+ class_addmethod(pdp_glx_class, (t_method)pdp_glx_cursor, gensym("cursor"), A_FLOAT, A_NULL);
+ class_addmethod(pdp_glx_class, (t_method)pdp_glx_fullscreen, gensym("fullscreen"), A_NULL);
+ class_addmethod(pdp_glx_class, (t_method)pdp_glx_moveresize, gensym("posdim"), A_FLOAT, A_FLOAT, A_FLOAT, A_FLOAT, A_NULL);
+ class_addmethod(pdp_glx_class, (t_method)pdp_glx_tile, gensym("tile"), A_FLOAT, A_FLOAT, A_FLOAT, A_FLOAT, A_NULL);
+
+
+ /* accept both pdp and pdp_tex packets */
+ class_addmethod(pdp_glx_class, (t_method)pdp_glx_input_0, gensym("pdp"), A_SYMBOL, A_DEFFLOAT, A_NULL);
+
+
+ /* some shortcuts for the lazy */
+ class_addmethod(pdp_glx_class, (t_method)pdp_glx_vga, gensym("vga"), A_NULL);
+
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+
generated by cgit v1.2.1 (git 2.18.0) at 2024-11-04 08:47:35 +0000