--- /dev/null
+/*****************************************************************************
+ * glx.c: GLX video output
+ *****************************************************************************
+ * Copyright (C) 2004 VideoLAN
+ * $Id$
+ *
+ * Authors: Cyril Deguet <asmax@videolan.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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
+ *****************************************************************************/
+
+/*****************************************************************************
+ * Preamble
+ *****************************************************************************/
+#include <errno.h> /* ENOMEM */
+#include <stdlib.h> /* malloc(), free() */
+#include <string.h>
+
+#include <vlc/vlc.h>
+#include <vlc/intf.h>
+#include <vlc/vout.h>
+
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+#include <GL/glx.h>
+
+/*****************************************************************************
+ * Local prototypes
+ *****************************************************************************/
+static int Create ( vlc_object_t * );
+static void Destroy ( vlc_object_t * );
+
+static int Init ( vout_thread_t * );
+static void End ( vout_thread_t * );
+static int Manage ( vout_thread_t * );
+static void Render ( vout_thread_t *p_vout, picture_t *p_pic );
+static void DisplayVideo( vout_thread_t *, picture_t * );
+
+static int OpenDisplay ( vout_thread_t * );
+static void CloseDisplay( vout_thread_t * );
+static int InitGLX12 ( vout_thread_t *p_vout );
+static int InitGLX13 ( vout_thread_t *p_vout );
+static void CreateWindow( vout_thread_t *p_vout, XVisualInfo *p_vi );
+static void SwitchContext( vout_thread_t *p_vout );
+
+static inline int GetAlignedSize( int i_size );
+
+#define MAX_TEXTURE_SIZE 512
+
+/*****************************************************************************
+ * Module descriptor
+ *****************************************************************************/
+vlc_module_begin();
+ set_description( _("X11 OpenGL (GLX) video output") );
+ set_capability( "video output", 20 );
+ add_shortcut( "glx" );
+ set_callbacks( Create, Destroy );
+vlc_module_end();
+
+/*****************************************************************************
+ * vout_sys_t: GLX video output method descriptor
+ *****************************************************************************
+ * This structure is part of the video output thread descriptor.
+ * It describes the GLX specific properties of an output thread.
+ *****************************************************************************/
+struct vout_sys_t
+{
+ uint8_t *p_buffer;
+ int i_index;
+
+ int i_width;
+ int i_height;
+ int b_fullscreen;
+
+ Display *p_display;
+ int b_glx13;
+ GLXContext gwctx;
+ Window wnd;
+ GLXWindow gwnd;
+ Atom wm_delete;
+
+ GLuint texture;
+
+ int i_effect; //XXX
+};
+
+#define MWM_HINTS_DECORATIONS (1L << 1)
+#define PROP_MWM_HINTS_ELEMENTS 5
+typedef struct mwmhints_t
+{
+ uint32_t flags;
+ uint32_t functions;
+ uint32_t decorations;
+ int32_t input_mode;
+ uint32_t status;
+} mwmhints_t;
+
+
+/*****************************************************************************
+ * Create: allocates GLX video thread output method
+ *****************************************************************************
+ * This function allocates and initializes a GLX vout method.
+ *****************************************************************************/
+static int Create( vlc_object_t *p_this )
+{
+ vout_thread_t *p_vout = (vout_thread_t *)p_this;
+
+ /* Allocate structure */
+ p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
+ if( p_vout->p_sys == NULL )
+ {
+ msg_Err( p_vout, "out of memory" );
+ return( 1 );
+ }
+
+ //XXX set to 0 to disable the cube effect
+ p_vout->p_sys->i_effect = 1;
+
+ /* p_vout->p_sys->i_width = p_vout->i_window_width;
+ p_vout->p_sys->i_height = p_vout->i_window_height; */
+ p_vout->p_sys->i_width = 700;
+ p_vout->p_sys->i_height = 700;
+
+ p_vout->p_sys->b_fullscreen = 0;
+
+ /* A texture must have a size aligned on a power of 2 */
+ p_vout->output.i_width = GetAlignedSize( p_vout->render.i_width );
+ p_vout->output.i_height = GetAlignedSize( p_vout->render.i_height );
+ p_vout->output.i_aspect = p_vout->render.i_aspect;
+
+ msg_Dbg( p_vout, "Texture size: %dx%d", p_vout->output.i_width,
+ p_vout->output.i_height );
+
+ /* Open and initialize device */
+ if( OpenDisplay( p_vout ) )
+ {
+ msg_Err( p_vout, "cannot open display" );
+ free( p_vout->p_sys );
+ return( 1 );
+ }
+
+ p_vout->pf_init = Init;
+ p_vout->pf_end = End;
+ p_vout->pf_manage = Manage;
+ p_vout->pf_render = Render;
+ p_vout->pf_display = DisplayVideo;
+
+ return( 0 );
+}
+
+/*****************************************************************************
+ * Init: initialize GLX video thread output method
+ *****************************************************************************/
+static int Init( vout_thread_t *p_vout )
+{
+ int i_index;
+ picture_t *p_pic;
+
+ /* No YUV textures :( */
+ p_vout->output.i_chroma = VLC_FOURCC('R','V','3','2');
+ p_vout->output.i_rmask = 0x000000ff;
+ p_vout->output.i_gmask = 0x0000ff00;
+ p_vout->output.i_bmask = 0x00ff0000;
+
+ I_OUTPUTPICTURES = 0;
+
+ p_pic = NULL;
+
+ /* Find an empty picture slot */
+ for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
+ {
+ if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
+ {
+ p_pic = p_vout->p_picture + i_index;
+ break;
+ }
+ }
+
+ if( p_pic == NULL )
+ {
+ return -1;
+ }
+
+ /* We know the chroma, allocate a buffer which will be used
+ * directly by the decoder */
+ p_pic->i_planes = 1;
+
+ p_pic->p->p_pixels = p_vout->p_sys->p_buffer;
+ p_pic->p->i_lines = p_vout->output.i_height;
+ p_pic->p->i_pitch = p_vout->output.i_width * 4;
+ p_pic->p->i_pixel_pitch = 4;
+ p_pic->p->i_visible_pitch = p_vout->output.i_width * 4;
+
+ p_pic->i_status = DESTROYED_PICTURE;
+ p_pic->i_type = DIRECT_PICTURE;
+
+ PP_OUTPUTPICTURE[ 0 ] = p_pic;
+
+ I_OUTPUTPICTURES = 1;
+
+ SwitchContext( p_vout );
+
+ /* Set the texture parameters */
+ glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR );
+ glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST );
+
+ if( p_vout->p_sys->i_effect )
+ {
+ glEnable( GL_CULL_FACE);
+ /*glDisable( GL_DEPTH_TEST );
+ glEnable( GL_BLEND );
+ glBlendFunc( GL_SRC_ALPHA, GL_ONE );*/
+
+ /* Set the perpective */
+ glMatrixMode( GL_PROJECTION );
+ glLoadIdentity();
+ glFrustum( -1.0, 1.0, -1.0, 1.0, 3.0, 20.0 );
+ glMatrixMode( GL_MODELVIEW );
+ glLoadIdentity();
+ glTranslatef( 0.0, 0.0, - 5.0 );
+ }
+
+ return 0;
+}
+
+/*****************************************************************************
+ * End: terminate GLX video thread output method
+ *****************************************************************************/
+static void End( vout_thread_t *p_vout )
+{
+ ;
+}
+
+/*****************************************************************************
+ * Destroy: destroy GLX video thread output method
+ *****************************************************************************
+ * Terminate an output method created by Create
+ *****************************************************************************/
+static void Destroy( vlc_object_t *p_this )
+{
+ vout_thread_t *p_vout = (vout_thread_t *)p_this;
+
+ CloseDisplay( p_vout );
+
+ /* Free the texture buffer*/
+ if( p_vout->p_sys->p_buffer )
+ {
+ free( p_vout->p_sys->p_buffer );
+ }
+
+ free( p_vout->p_sys );
+}
+
+/*****************************************************************************
+ * Manage: handle X11 events
+ *****************************************************************************
+ * This function should be called regularly by video output thread. It manages
+ * console events. It returns a non null value on error.
+ *****************************************************************************/
+static int Manage( vout_thread_t *p_vout )
+{
+ Display *p_display;
+
+ p_display = p_vout->p_sys->p_display;
+
+ /* loop on X11 events */
+ while( XPending( p_display ) > 0 )
+ {
+ XEvent evt;
+ XNextEvent( p_display, &evt );
+ switch( evt.type )
+ {
+ case ClientMessage:
+ {
+ /* Delete notification */
+ if( (evt.xclient.format == 32) &&
+ ((Atom)evt.xclient.data.l[0] == p_vout->p_sys->wm_delete) )
+ {
+ /* the user wants to close the window */
+ playlist_t * p_playlist =
+ (playlist_t *)vlc_object_find( p_vout, VLC_OBJECT_PLAYLIST,
+ FIND_ANYWHERE );
+ if( p_playlist != NULL )
+ {
+ playlist_Stop( p_playlist );
+ vlc_object_release( p_playlist );
+ }
+ }
+ break;
+ }
+ }
+ }
+ return 0;
+}
+
+/*****************************************************************************
+ * Render: render previously calculated output
+ *****************************************************************************/
+static void Render( vout_thread_t *p_vout, picture_t *p_pic )
+{
+ glClear(GL_COLOR_BUFFER_BIT);
+ glTexImage2D (GL_TEXTURE_2D, 0, 3, p_vout->output.i_width,
+ p_vout->output.i_height, 0, GL_RGBA, GL_UNSIGNED_BYTE,
+ p_vout->p_sys->p_buffer);
+
+ if( !p_vout->p_sys->i_effect )
+ {
+ glEnable( GL_TEXTURE_2D);
+ glBegin( GL_POLYGON);
+ glTexCoord2f(0.0,0.0); glVertex2f(-1.0,1.0);
+ glTexCoord2f(1.0,0.0); glVertex2f(1.0,1.0);
+ glTexCoord2f(1.0,1.0); glVertex2f(1.0,-1.0);
+ glTexCoord2f(0.0,1.0); glVertex2f(-1.0,-1.0);
+ glEnd();
+ }
+ else
+ {
+ glRotatef( 2.0, 3.3, 1.5, 2.7 );
+
+ glEnable( GL_TEXTURE_2D);
+ glBegin( GL_QUADS );
+ /* Front */
+ glTexCoord2f( 0.0, 0.0 );
+ glVertex3f( - 1.0, 1.0, 1.0 );
+ glTexCoord2f( 0.0, 1.0 );
+ glVertex3f( - 1.0, - 1.0, 1.0 );
+ glTexCoord2f( 1.0,
+ 1.0 );
+ glVertex3f( 1.0, - 1.0, 1.0 );
+ glTexCoord2f( 1.0, 0.0 );
+ glVertex3f( 1.0, 1.0, 1.0 );
+
+ /* Left */
+ glTexCoord2f( 0.0, 0.0 );
+ glVertex3f( - 1.0, 1.0, - 1.0 );
+ glTexCoord2f( 0.0, 1.0 );
+ glVertex3f( - 1.0, - 1.0, - 1.0 );
+ glTexCoord2f( 1.0,
+ 1.0 );
+ glVertex3f( - 1.0, - 1.0, 1.0 );
+ glTexCoord2f( 1.0, 0.0 );
+ glVertex3f( - 1.0, 1.0, 1.0 );
+
+ /* Back */
+ glTexCoord2f( 0.0, 0.0 );
+ glVertex3f( 1.0, 1.0, - 1.0 );
+ glTexCoord2f( 0.0, 1.0 );
+ glVertex3f( 1.0, - 1.0, - 1.0 );
+ glTexCoord2f( 1.0,
+ 1.0 );
+ glVertex3f( - 1.0, - 1.0, - 1.0 );
+ glTexCoord2f( 1.0, 0.0 );
+ glVertex3f( - 1.0, 1.0, - 1.0 );
+
+ /* Right */
+ glTexCoord2f( 0.0, 0.0 );
+ glVertex3f( 1.0, 1.0, 1.0 );
+ glTexCoord2f( 0.0, 1.0 );
+ glVertex3f( 1.0, - 1.0, 1.0 );
+ glTexCoord2f( 1.0,
+ 1.0 );
+ glVertex3f( 1.0, - 1.0, - 1.0 );
+ glTexCoord2f( 1.0, 0.0 );
+ glVertex3f( 1.0, 1.0, - 1.0 );
+
+ /* Top */
+ glTexCoord2f( 0.0, 0.0 );
+ glVertex3f( - 1.0, 1.0, - 1.0 );
+ glTexCoord2f( 0.0, 1.0 );
+ glVertex3f( - 1.0, 1.0, 1.0 );
+ glTexCoord2f( 1.0,
+ 1.0 );
+ glVertex3f( 1.0, 1.0, 1.0 );
+ glTexCoord2f( 1.0, 0.0 );
+ glVertex3f( 1.0, 1.0, - 1.0 );
+
+ /* Bottom */
+ glTexCoord2f( 0.0, 0.0 );
+ glVertex3f( - 1.0, - 1.0, 1.0 );
+ glTexCoord2f( 0.0, 1.0 );
+ glVertex3f( - 1.0, - 1.0, - 1.0 );
+ glTexCoord2f( 1.0,
+ 1.0 );
+ glVertex3f( 1.0, - 1.0, - 1.0 );
+ glTexCoord2f( 1.0, 0.0 );
+ glVertex3f( 1.0, - 1.0, 1.0 );
+ glEnd();
+ }
+ glDisable( GL_TEXTURE_2D);
+
+
+}
+
+/*****************************************************************************
+ * DisplayVideo: displays previously rendered output
+ *****************************************************************************/
+static void DisplayVideo( vout_thread_t *p_vout, picture_t *p_pic )
+{
+ if( p_vout->p_sys->b_glx13 )
+ {
+ glXSwapBuffers( p_vout->p_sys->p_display, p_vout->p_sys->gwnd );
+ }
+ else
+ {
+ glXSwapBuffers( p_vout->p_sys->p_display, p_vout->p_sys->wnd );
+ }
+
+}
+
+/* following functions are local */
+
+/*****************************************************************************
+ * OpenDisplay: open and initialize OpenGL device
+ *****************************************************************************/
+
+static int OpenDisplay( vout_thread_t *p_vout )
+{
+ Display *p_display;
+ int i_opcode, i_evt, i_err;
+ int i_maj, i_min;
+
+ /* Open the display */
+ p_vout->p_sys->p_display = p_display = XOpenDisplay( NULL );
+ if( !p_display )
+ {
+ msg_Err( p_vout, "Cannot open display" );
+ return -1;
+ }
+
+ /* Check for GLX extension */
+ if( !XQueryExtension( p_display, "GLX", &i_opcode, &i_evt, &i_err ) )
+ {
+ msg_Err( p_vout, "GLX extension not supported" );
+ return -1;
+ }
+ if( !glXQueryExtension( p_display, &i_err, &i_evt ) )
+ {
+ msg_Err( p_vout, "glXQueryExtension failed" );
+ return -1;
+ }
+
+ /* Check GLX version */
+ if (!glXQueryVersion( p_display, &i_maj, &i_min ) )
+ {
+ msg_Err( p_vout, "glXQueryVersion failed" );
+ return -1;
+ }
+ if( i_maj <= 0 || ((i_maj == 1) && (i_min < 3)) )
+ {
+ p_vout->p_sys->b_glx13 = 0;
+ msg_Dbg( p_vout, "Using GLX 1.2 API" );
+ if( InitGLX12( p_vout ) == -1 )
+ {
+ return -1;
+ }
+ }
+ else
+ {
+ p_vout->p_sys->b_glx13 = 1;
+ msg_Dbg( p_vout, "Using GLX 1.3 API" );
+ if( InitGLX13( p_vout ) == -1 )
+ {
+ return -1;
+ }
+ }
+
+ XMapWindow( p_display, p_vout->p_sys->wnd );
+ if( p_vout->p_sys->b_fullscreen )
+ {
+ //XXX
+ XMoveWindow( p_display, p_vout->p_sys->wnd, 0, 0 );
+ }
+ XFlush( p_display );
+
+ /* Allocate the texture buffer */
+ p_vout->p_sys->p_buffer =
+ malloc( p_vout->output.i_width * p_vout->output.i_height * 4 );
+ if( !p_vout->p_sys->p_buffer )
+ {
+ msg_Err( p_vout, "Out of memory" );
+ return -1;
+ }
+ return 0;
+}
+
+/*****************************************************************************
+ * CloseDisplay: close and reset OpenGL device
+ *****************************************************************************
+ * Returns all resources allocated by OpenDisplay and restore the original
+ * state of the device.
+ *****************************************************************************/
+static void CloseDisplay( vout_thread_t *p_vout )
+{
+ Display *p_display;
+
+ glFlush();
+
+ p_display = p_vout->p_sys->p_display;
+ glXDestroyContext( p_display, p_vout->p_sys->gwctx );
+ if( p_vout->p_sys->b_glx13 )
+ {
+ glXDestroyWindow( p_display, p_vout->p_sys->gwnd );
+ }
+ XDestroyWindow( p_display, p_vout->p_sys->wnd );
+ XCloseDisplay( p_display );
+
+}
+
+
+int InitGLX12( vout_thread_t *p_vout )
+{
+ Display *p_display;
+ XVisualInfo *p_vi;
+ GLXContext gwctx;
+ int p_attr[] = { GLX_RGBA, GLX_RED_SIZE, 5, GLX_GREEN_SIZE, 5,
+ GLX_BLUE_SIZE, 5, GLX_DOUBLEBUFFER,
+ 0 };
+
+ p_display = p_vout->p_sys->p_display;
+
+ p_vi = glXChooseVisual( p_display, DefaultScreen( p_display), p_attr );
+ if(! p_vi )
+ {
+ msg_Err( p_vout, "Cannot get GLX 1.2 visual" );
+ return -1;
+ }
+
+ /* Create the window */
+ CreateWindow( p_vout, p_vi );
+
+ /* Create an OpenGL context */
+ p_vout->p_sys->gwctx = gwctx = glXCreateContext( p_display, p_vi, 0, True );
+ if( !gwctx )
+ {
+ msg_Err( p_vout, "Cannot create OpenGL context");
+ XFree( p_vi );
+ return -1;
+ }
+ XFree( p_vi );
+
+ return 0;
+}
+
+
+int InitGLX13( vout_thread_t *p_vout )
+{
+ Display *p_display;
+ int i_nbelem;
+ GLXFBConfig *p_fbconfs, fbconf;
+ XVisualInfo *p_vi;
+ GLXContext gwctx;
+ int p_attr[] = { GLX_RED_SIZE, 5, GLX_GREEN_SIZE, 5,
+ GLX_BLUE_SIZE, 5, GLX_DOUBLEBUFFER, True,
+ GLX_DRAWABLE_TYPE, GLX_WINDOW_BIT, 0 };
+
+ p_display = p_vout->p_sys->p_display;
+
+ /* Get the FB configuration */
+ p_fbconfs = glXChooseFBConfig( p_display, 0, p_attr, &i_nbelem );
+ if( (i_nbelem <= 0) || !p_fbconfs )
+ {
+ msg_Err( p_vout, "Cannot get FB configurations");
+ if( p_fbconfs )
+ {
+ XFree( p_fbconfs );
+ }
+ return -1;
+ }
+ fbconf = p_fbconfs[0];
+
+ /* Get the X11 visual */
+ p_vi = glXGetVisualFromFBConfig( p_display, fbconf );
+ if( !p_vi )
+ {
+ msg_Err( p_vout, "Cannot get X11 visual" );
+ XFree( p_fbconfs );
+ return -1;
+ }
+
+ /* Create the window */
+ CreateWindow( p_vout, p_vi );
+
+ XFree( p_vi );
+
+ /* Create the GLX window */
+ p_vout->p_sys->gwnd = glXCreateWindow( p_display, fbconf, p_vout->p_sys->wnd, NULL );
+ if( p_vout->p_sys->gwnd == None )
+ {
+ msg_Err( p_vout, "Cannot create GLX window" );
+ return -1;
+ }
+
+ /* Create an OpenGL context */
+ p_vout->p_sys->gwctx = gwctx = glXCreateNewContext( p_display, fbconf,
+ GLX_RGBA_TYPE, NULL, True );
+ if( !gwctx )
+ {
+ msg_Err( p_vout, "Cannot create OpenGL context");
+ XFree( p_fbconfs );
+ return -1;
+ }
+ XFree( p_fbconfs );
+
+ return 0;
+}
+
+
+
+void CreateWindow( vout_thread_t *p_vout, XVisualInfo *p_vi )
+{
+ Display *p_display;
+ XSetWindowAttributes xattr;
+ Window wnd;
+ Colormap cm;
+ XSizeHints* p_size_hints;
+ Atom prop;
+ mwmhints_t mwmhints;
+
+ p_display = p_vout->p_sys->p_display;
+
+ /* Create a colormap */
+ cm = XCreateColormap( p_display, RootWindow( p_display, p_vi->screen ),
+ p_vi->visual, AllocNone );
+
+ /* Create the window */
+ xattr.background_pixel = BlackPixel( p_display, DefaultScreen(p_display) );
+ xattr.border_pixel = 0;
+ xattr.colormap = cm;
+ p_vout->p_sys->wnd = wnd = XCreateWindow( p_display, DefaultRootWindow(p_display),
+ 0, 0, p_vout->p_sys->i_width, p_vout->p_sys->i_height, 0, p_vi->depth,
+ InputOutput, p_vi->visual,
+ CWBackPixel | CWBorderPixel | CWColormap, &xattr);
+
+ /* Allow the window to be deleted by the window manager */
+ p_vout->p_sys->wm_delete = XInternAtom( p_display, "WM_DELETE_WINDOW", False );
+ XSetWMProtocols( p_display, wnd, &p_vout->p_sys->wm_delete, 1 );
+
+ if( p_vout->p_sys->b_fullscreen )
+ {
+ mwmhints.flags = MWM_HINTS_DECORATIONS;
+ mwmhints.decorations = False;
+
+ prop = XInternAtom( p_display, "_MOTIF_WM_HINTS", False );
+ XChangeProperty( p_display, wnd, prop, prop, 32, PropModeReplace,
+ (unsigned char *)&mwmhints, PROP_MWM_HINTS_ELEMENTS );
+ }
+ else
+ {
+ /* Prevent the window from being resized */
+ p_size_hints = XAllocSizeHints();
+ p_size_hints->flags = PMinSize | PMaxSize;
+ p_size_hints->min_width = p_vout->p_sys->i_width;
+ p_size_hints->min_height = p_vout->p_sys->i_height;
+ p_size_hints->max_width = p_vout->p_sys->i_width;
+ p_size_hints->max_height = p_vout->p_sys->i_height;
+ XSetWMNormalHints( p_display, wnd, p_size_hints );
+ XFree( p_size_hints );
+ }
+ XSelectInput( p_display, wnd, KeyPressMask );
+}
+
+
+void SwitchContext( vout_thread_t *p_vout )
+{
+ /* Change the current OpenGL context */
+ if( p_vout->p_sys->b_glx13 )
+ {
+ glXMakeContextCurrent( p_vout->p_sys->p_display, p_vout->p_sys->gwnd,
+ p_vout->p_sys->gwnd, p_vout->p_sys->gwctx );
+ }
+ else
+ {
+ glXMakeCurrent( p_vout->p_sys->p_display, p_vout->p_sys->wnd,
+ p_vout->p_sys->gwctx );
+ }
+}
+
+
+int GetAlignedSize( int i_size )
+{
+ /* Return the nearest power of 2 */
+ int i_result = 1;
+ while( i_result < i_size )
+ {
+ i_result *= 2;
+ }
+ return i_result;
+}
projects / vlc / commitdiff