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-rw-r--r--modules/pdp_sdl.c427
1 files changed, 427 insertions, 0 deletions
diff --git a/modules/pdp_sdl.c b/modules/pdp_sdl.c
new file mode 100644
index 0000000..7bd8992
--- /dev/null
+++ b/modules/pdp_sdl.c
@@ -0,0 +1,427 @@
+/*
+ * Pure Data Packet module.
+ * Copyright (c) by martin pi <pi@attacksyour.net>
+ * 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.
+ *
+ */
+
+/*
+
+pdp sdl output
+
+DONE:
+
+TODO:
+ * close window (event)
+ * fullscreen chose resolution
+ * event handling in different object (and look at mplayer for that!)
+
+*/
+
+
+
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/ipc.h>
+#include <sys/shm.h>
+
+#include <SDL/SDL.h>
+
+#include <quicktime/lqt.h>
+#include <quicktime/colormodels.h>
+
+#include "pdp.h"
+#include "pdp_llconv.h"
+
+
+/* initial image dimensions */
+#define PDP_SDL_W 320
+#define PDP_SDL_H 240
+
+#define PDP_AUTOCREATE_RETRY 3
+
+
+typedef struct pdp_sdl_struct {
+ t_object x_obj;
+ t_float x_f;
+
+ int x_packet0;
+ int x_queue_id;
+
+ SDL_Surface *x_sdl_surface;
+ SDL_Overlay *x_sdl_overlay;
+ SDL_Rect x_sdl_rect;
+
+ Uint32 x_sdl_format;
+
+ int x_winwidth;
+ int x_winheight;
+
+ unsigned int x_width;
+ unsigned int x_height;
+ int x_last_encoding;
+
+ int x_initialized;
+ int x_backfromthread;
+ int x_autocreate;
+
+
+ int x_fullscreen;
+
+} t_pdp_sdl;
+
+static SDL_Surface *pdp_sdl_getSurface(char* title, int width, int height, int bits, int fullscreenflag) {
+ Uint32 flags;
+ int size,i;
+ SDL_Surface *screen;
+
+ /* Initialize SDL */
+ if (!SDL_WasInit(SDL_INIT_VIDEO)) {
+ if (SDL_Init (SDL_INIT_VIDEO|SDL_INIT_NOPARACHUTE)) {
+ printf("SDL: Initializing of SDL failed: %s.\n", SDL_GetError());
+ return (SDL_Surface *)-1;
+ }
+ }
+
+
+
+/*
+gem : SDL_OPENGL|SDL_DOUBLEBUF|SDL_HWSURFACE|SDL_ANYFORMAT|SDL_OPENGLBLIT;
+working: SDL_ANYFORMAT|SDL_RESIZABLE|SDL_RLEACCEL;
+*/
+
+ flags = SDL_HWSURFACE|SDL_RESIZABLE|SDL_ASYNCBLIT|SDL_HWACCEL;
+ if ( fullscreenflag>0 ) {
+ flags |= SDL_FULLSCREEN|SDL_DOUBLEBUF;
+ }
+
+ /* Have a preference for 8-bit, but accept any depth */
+ screen = SDL_SetVideoMode(width, height, bits, flags);
+ if ( screen == NULL ) {
+ fprintf(stderr, "Couldn't set video mode: %s\n",
+ SDL_GetError());
+ return NULL;
+ }
+
+ SDL_WM_SetCaption (title, title);
+
+ /* ignore events :: only keys and wm_quit */
+ for ( i=SDL_NOEVENT; i<SDL_NUMEVENTS; ++i )
+ if( !(i & (SDL_KEYDOWN|SDL_QUIT)) )
+ SDL_EventState(i, SDL_IGNORE);
+
+ SDL_ShowCursor(1);
+
+ return screen; // Success
+}
+
+static inline void pdp_sdl_getOverlay(t_pdp_sdl* x) {
+ x->x_sdl_overlay = SDL_CreateYUVOverlay(x->x_width, x->x_height, x->x_sdl_format, x->x_sdl_surface);
+}
+
+static inline void pdp_sdl_freeOverlay(t_pdp_sdl* x) {
+ SDL_FreeYUVOverlay(x->x_sdl_overlay);
+}
+
+static int pdp_sdl_drawImage(t_pdp_sdl* x, t_image *image, short int *pixels) {
+
+ unsigned int width = image->width;
+ unsigned int height = image->height;
+ int encoding = image->encoding;
+ unsigned int* uintdata;
+ int i;
+
+
+ /* 8bit y fulscale and 8bit u,v 2x2 subsampled */
+ //static short int gain[4] = {0x0100, 0x0100, 0x0100, 0x0100};
+ int nbpixels = width * height;
+ long size = (width * height + (((width>>1)*(height>>1))<<1));
+
+ /* check if xvimage needs to be recreated */
+ if ((width != x->x_width) || (height != x->x_height)){
+ post("pdp_xv: replace image");
+ x->x_width = width;
+ x->x_height = height;
+ pdp_sdl_freeOverlay(x);
+ pdp_sdl_getOverlay(x);
+ }
+
+ SDL_LockYUVOverlay(x->x_sdl_overlay);
+ if (pixels) {
+ pdp_llconv(pixels,RIF_YVU__P411_S16, (Uint8 *)(* x->x_sdl_overlay->pixels), RIF_YVU__P411_U8, x->x_width, x->x_height);
+ } else bzero((Uint8 *)(* x->x_sdl_overlay->pixels), size);
+ SDL_UnlockYUVOverlay(x->x_sdl_overlay);
+
+ return 1;
+}
+
+static void pdp_sdl_resize(t_pdp_sdl* x, t_floatarg width, t_floatarg height) {
+
+ if (x->x_initialized && (!x->x_fullscreen) && (width>0) && (height>0)){
+// disabled for now
+// if media size is different to the one set, it will resize (yet never dither)
+ }
+}
+
+static void pdp_sdl_fullscreen(t_pdp_sdl *x, t_floatarg f);
+
+static int pdp_sdl_create(t_pdp_sdl *x) {
+ if (x->x_initialized){
+ return 0;
+ }
+ x->x_initialized = 0;
+
+ x->x_sdl_surface = pdp_sdl_getSurface("pdp-sdl", x->x_winwidth, x->x_winheight, 16, x->x_fullscreen);
+ if (x->x_sdl_surface != NULL) {
+ pdp_sdl_getOverlay(x);
+ if (x->x_sdl_overlay != NULL) {
+ x->x_sdl_rect.x = 0;
+ x->x_sdl_rect.y = 0;
+ x->x_sdl_rect.w = x->x_width;
+ x->x_sdl_rect.h = x->x_height;
+ x->x_initialized = 1;
+ post("created successfully");
+ }
+ }
+ x->x_backfromthread = 1;
+
+ return x->x_initialized;
+}
+
+static void pdp_sdl_destroy(t_pdp_sdl *x);
+
+static void pdp_sdl_checkEvents(t_pdp_sdl *x) {
+ Uint8 *keys;
+ SDL_Event event;
+
+ if (!SDL_PollEvent(&event)) return;
+
+ switch( event.type ){
+ case SDL_KEYDOWN:
+ case SDL_KEYUP:
+ keys = SDL_GetKeyState(NULL);
+
+ if(keys[SDLK_UP]) { post("up"); }
+ if(keys[SDLK_DOWN]) { post("down"); }
+
+ if(keys[SDLK_ESCAPE]) pdp_sdl_fullscreen(x,0);
+ break;
+
+ case SDL_QUIT:
+ pdp_sdl_destroy(x);
+ break;
+ default:
+ break;
+ }
+
+
+}
+
+static int pdp_sdl_try_autocreate(t_pdp_sdl *x)
+{
+
+ if (x->x_autocreate){
+ post("pdp_sdl: autocreate window");
+ pdp_sdl_create(x);
+ if (!(x->x_initialized)){
+ x->x_autocreate--;
+ if (!x->x_autocreate){
+ post ("pdp_sdl: autocreate failed %d times: disabled", PDP_AUTOCREATE_RETRY);
+ post ("pdp_sdl: send [autocreate 1] message to re-enable");
+ return 0;
+ }
+ }
+ else return 1;
+
+ }
+ return 0;
+}
+
+static void pdp_sdl_bang(t_pdp_sdl *x);
+
+static void pdp_sdl_process(t_pdp_sdl *x)
+{
+ t_pdp *header = pdp_packet_header(x->x_packet0);
+ void *data = pdp_packet_data (x->x_packet0);
+
+
+ if (!x->x_backfromthread) return;
+
+ /* check if window is initialized */
+ if (!(x->x_initialized)){
+ post("trying to autocreate");
+ if (!pdp_sdl_try_autocreate(x)) return;
+ }
+
+ /* check for pending sdl events */
+ pdp_sdl_checkEvents(x);
+
+ /* check data packet */
+ if (!(header)) {
+ post("pdp_sdl: invalid packet header");
+ return;
+ }
+ if (PDP_IMAGE != header->type) {
+ post("pdp_sdl: packet is not a PDP_IMAGE");
+ return;
+ }
+ if (header->info.image.encoding != PDP_IMAGE_YV12) {
+ post("pdp_sdl: packet is not a PDP_IMAGE_YV12");
+ return;
+ }
+
+ /* copy the packet to the sdlimage */
+ pdp_sdl_drawImage(x, &header->info.image, (short int *)data);
+
+ /* display the new image */
+ pdp_sdl_bang(x);
+}
+
+static void pdp_sdl_destroy(t_pdp_sdl *x) {
+ if (x->x_initialized){
+ pdp_sdl_freeOverlay(x);
+ SDL_FreeSurface(x->x_sdl_surface);
+ x->x_initialized = 0;
+ }
+}
+
+static void pdp_sdl_random(t_pdp_sdl *x) {
+ unsigned int i;
+ long *intdata = (long *)(* x->x_sdl_overlay->pixels);
+ SDL_LockYUVOverlay(x->x_sdl_overlay);
+ for(i=0; i<x->x_width*x->x_height/4; i++) intdata[i]=random();
+ SDL_UnlockYUVOverlay(x->x_sdl_overlay);
+}
+
+/* redisplays image */
+static void pdp_sdl_bang_thread(t_pdp_sdl *x) {
+// if (x->x_sdl_overlay->pixels) {
+ if (SDL_DisplayYUVOverlay(x->x_sdl_overlay, &(* x).x_sdl_rect) <0)
+ post("pdp_sdl: __LINE__ cannot display");
+// }
+}
+
+static void pdp_sdl_bang_callback(t_pdp_sdl *x)
+{
+ x->x_backfromthread = 1;
+
+ /* release the packet if there is one */
+ pdp_packet_mark_unused(x->x_packet0);
+ x->x_packet0 = -1;}
+
+static void pdp_sdl_bang(t_pdp_sdl *x) {
+
+ /* if previous queued method returned
+ schedule a new one, else ignore */
+ if (x->x_backfromthread) {
+ x->x_backfromthread = 0;
+ pdp_queue_add(x, pdp_sdl_bang_thread, pdp_sdl_bang_callback, &x->x_queue_id);
+ }
+}
+
+static void pdp_sdl_input_0(t_pdp_sdl *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_sdl_process(x);
+
+}
+
+static void pdp_sdl_autocreate(t_pdp_sdl *x, t_floatarg f) {
+ if (f != 0.0f) x->x_autocreate = PDP_AUTOCREATE_RETRY;
+ else x->x_autocreate = 0;
+}
+
+static void pdp_sdl_fullscreen(t_pdp_sdl *x, t_floatarg f) {
+ if (f == x->x_fullscreen) return;
+
+ x->x_fullscreen = (f != 0.0f);
+
+ pdp_sdl_destroy(x);
+ pdp_sdl_create(x);
+ SDL_ShowCursor(0);
+}
+
+static void pdp_sdl_free(t_pdp_sdl *x)
+{
+ pdp_queue_finish(x->x_queue_id);
+ pdp_sdl_destroy(x);
+ pdp_packet_mark_unused(x->x_packet0);
+ SDL_Quit();
+}
+
+
+t_class *pdp_sdl_class;
+
+void *pdp_sdl_new(void)
+{
+ t_pdp_sdl *x = (t_pdp_sdl *)pd_new(pdp_sdl_class);
+
+ x->x_packet0 = -1;
+ x->x_queue_id = -1;
+
+ x->x_sdl_surface = NULL;
+ x->x_sdl_overlay = NULL;
+ x->x_sdl_format = SDL_YV12_OVERLAY;
+
+ x->x_winwidth = PDP_SDL_W;
+ x->x_winheight = PDP_SDL_H;
+
+ x->x_width = PDP_SDL_W;
+ x->x_height = PDP_SDL_H;
+
+ x->x_backfromthread = 1;
+ x->x_initialized = 0;
+ pdp_sdl_autocreate(x,1);
+
+ x->x_fullscreen = 0;
+
+ return (void *)x;
+}
+
+
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+
+void pdp_sdl_setup(void)
+{
+
+
+ pdp_sdl_class = class_new(gensym("pdp_sdl"), (t_newmethod)pdp_sdl_new,
+ (t_method)pdp_sdl_free, sizeof(t_pdp_sdl), 0, A_NULL);
+
+
+ class_addmethod(pdp_sdl_class, (t_method)pdp_sdl_bang, gensym("bang"), A_NULL);
+ class_addmethod(pdp_sdl_class, (t_method)pdp_sdl_random, gensym("random"), A_NULL);
+ class_addmethod(pdp_sdl_class, (t_method)pdp_sdl_create, gensym("create"), A_NULL);
+ class_addmethod(pdp_sdl_class, (t_method)pdp_sdl_autocreate, gensym("autocreate"), A_FLOAT, A_NULL);
+ class_addmethod(pdp_sdl_class, (t_method)pdp_sdl_destroy, gensym("destroy"), A_NULL);
+ class_addmethod(pdp_sdl_class, (t_method)pdp_sdl_destroy, gensym("close"), A_NULL);
+// class_addmethod(pdp_sdl_class, (t_method)pdp_sdl_resize, gensym("dim"), A_FLOAT, A_FLOAT, A_NULL);
+// class_addmethod(pdp_sdl_class, (t_method)pdp_sdl_resize, gensym("size"), A_FLOAT, A_FLOAT, A_NULL);
+ class_addmethod(pdp_sdl_class, (t_method)pdp_sdl_fullscreen, gensym("fullscreen"), A_FLOAT, A_NULL);
+// class_addmethod(pdp_sdl_class, (t_method)pdp_sdl_display, gensym("display"), A_SYMBOL, A_NULL);
+ class_addmethod(pdp_sdl_class, (t_method)pdp_sdl_input_0, gensym("pdp"), A_SYMBOL, A_DEFFLOAT, A_NULL);
+
+}
+
+#ifdef __cplusplus
+}
+#endif
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