[vlc-devel] commit: Patch from Søren Bøg < avacore at videolan.org> GSoC 2007 (Jean-Paul Saman )
git version control
git at videolan.org
Wed Apr 9 12:44:48 CEST 2008
vlc | branch: master | Jean-Paul Saman <jean-paul.saman at m2x.nl> | Wed Mar 26 11:39:03 2008 +0100| [ba0b957330e7524790d7a2566b9f6bd50633ca69]
Patch from Søren Bøg <avacore at videolan.org> GSoC 2007
Overlay - Basic test/demonstration program
> http://git.videolan.org/gitweb.cgi/vlc.git/?a=commit;h=ba0b957330e7524790d7a2566b9f6bd50633ca69
---
extras/misc/overlay-test.c | 207 ++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 207 insertions(+), 0 deletions(-)
diff --git a/extras/misc/overlay-test.c b/extras/misc/overlay-test.c
new file mode 100644
index 0000000..ec66683
--- /dev/null
+++ b/extras/misc/overlay-test.c
@@ -0,0 +1,207 @@
+/*****************************************************************************
+ * overlay-test.c : test program for the dynamic overlay plugin
+ *****************************************************************************
+ * Copyright (C) 2007 the VideoLAN team
+ * $Id$
+ *
+ * Author: Søren Bøg <avacore at 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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
+ *****************************************************************************/
+
+/*****************************************************************************
+ * Preamble
+ *****************************************************************************/
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <math.h>
+
+#include <sys/fcntl.h>
+#include <sys/ipc.h>
+#include <sys/shm.h>
+#include <unistd.h>
+
+/*****************************************************************************
+ * Images
+ *****************************************************************************/
+
+#define WIDTH 128
+#define HEIGHT 128
+
+char *p_imageRGBA;
+
+void ImagesCreate( void ) {
+ char *p_data = p_imageRGBA;
+ for( size_t i = 0; i < HEIGHT; ++i ) {
+ for( size_t j = 0; j < HEIGHT; ++j ) {
+ *(p_data++) = i * 4 & 0xFF;
+ *(p_data++) = 0xFF;
+ *(p_data++) = 0x00;
+ *(p_data++) = j * 4 & 0xFF;
+ }
+ }
+}
+
+/*****************************************************************************
+ * I/O Helpers
+ *****************************************************************************/
+
+int IsFailure( char *psz_text ) {
+ return strncmp( psz_text, "SUCCESS:", 8 );
+}
+
+/*****************************************************************************
+ * main
+ *****************************************************************************/
+
+int main( int i_argc, char *ppsz_argv[] ) {
+ if( i_argc != 3 ) {
+ printf( "Incorrect number of parameters.\n"
+ "Usage is: %s command-fifo response-fifo\n", ppsz_argv[0] );
+ exit( -2 );
+ }
+
+ printf( "Creating shared memory..." );
+ int i_shmRGBA = shmget( IPC_PRIVATE, WIDTH * HEIGHT * 4, S_IRWXU );
+ if( i_shmRGBA == -1 ) {
+ printf( " failed\n" );
+ exit( -1 );
+ }
+ printf( " done. ID is %d\n", i_shmRGBA );
+
+ printf( "Attaching shared memory..." );
+ p_imageRGBA = shmat( i_shmRGBA, NULL, 0 );
+ if( p_imageRGBA == -1 ) {
+ printf( " failed\n" );
+ exit( -1 );
+ }
+ printf( " done\n" );
+
+ printf( "Queueing shared memory for destruction..." );
+ if( shmctl( i_shmRGBA, IPC_RMID, 0 ) == -1 ) {
+ printf( " failed\n" );
+ exit( -1 );
+ }
+ printf( " done\n" );
+
+ printf( "Generating images..." );
+ ImagesCreate();
+ printf( " done\n" );
+
+ printf( "Please make sure vlc is running.\n"
+ "You should append parameters similar to the following:\n"
+ "--sub-filter overlay --overlay-input %s --overlay-output %s\n",
+ ppsz_argv[1], ppsz_argv[2] );
+
+ printf( "Opening FIFOs..." );
+ FILE *f_cmd = fopen( ppsz_argv[1], "w" );
+ if( f_cmd == NULL ) {
+ printf( " failed\n" );
+ exit( -1 );
+ }
+ FILE *f_res = fopen( ppsz_argv[2], "r" );
+ if( f_res == NULL ) {
+ printf( " failed\n" );
+ exit( -1 );
+ }
+ printf( " done\n" );
+
+ printf( "Getting an overlay..." );
+ int i_overlay;
+ char psz_resp[9];
+ fprintf( f_cmd, "GenImage\n" );
+ fflush( f_cmd );
+ fscanf( f_res, "%8s", &psz_resp );
+ if( IsFailure( psz_resp ) ) {
+ printf( " failed\n" );
+ exit( -1 );
+ }
+ fscanf( f_res, "%d", &i_overlay );
+ printf( " done. Overlay is %d\n", i_overlay );
+
+ printf( "Sending data..." );
+ fprintf( f_cmd, "DataSharedMem %d %d %d RGBA %d\n", i_overlay, WIDTH,
+ HEIGHT, i_shmRGBA );
+ fflush( f_cmd );
+ fscanf( f_res, "%8s", &psz_resp );
+ if( IsFailure( psz_resp ) ) {
+ printf( " failed\n" );
+ exit( -1 );
+ }
+ printf( " done\n" );
+
+ printf( "Activating overlay..." );
+ fprintf( f_cmd, "SetVisibility %d 1\n", i_overlay );
+ fflush( f_cmd );
+ fscanf( f_res, "%8s", &psz_resp );
+ if( IsFailure( psz_resp ) ) {
+ printf( " failed\n" );
+ exit( -1 );
+ }
+ printf( " done\n" );
+
+ printf( "Sweeping alpha..." );
+ for( int i_alpha = 0xFF; i_alpha >= -0xFF ; i_alpha -= 8 ) {
+ fprintf( f_cmd, "SetAlpha %d %d\n", i_overlay, abs( i_alpha ) );
+ fflush( f_cmd );
+ fscanf( f_res, "%8s", &psz_resp );
+ if( IsFailure( psz_resp ) ) {
+ printf( " failed\n" );
+ exit( -1 );
+ }
+ usleep( 20000 );
+ }
+ fprintf( f_cmd, "SetAlpha %d 255\n", i_overlay );
+ fflush( f_cmd );
+ fscanf( f_res, "%8s", &psz_resp );
+ if( IsFailure( psz_resp ) ) {
+ printf( " failed\n" );
+ exit( -1 );
+ }
+ printf( " done\n" );
+
+ printf( "Circle motion..." );
+ for( float f_theta = 0; f_theta <= 2 * M_PI ; f_theta += M_PI / 64.0 ) {
+ fprintf( f_cmd, "SetPosition %d %d %d\n", i_overlay,
+ (int)( - cos( f_theta ) * 100.0 + 100.0 ),
+ (int)( - sin( f_theta ) * 100.0 + 100.0 ) );
+ fflush( f_cmd );
+ fscanf( f_res, "%8s", &psz_resp );
+ if( IsFailure( psz_resp ) ) {
+ printf( " failed\n" );
+ exit( -1 );
+ }
+ usleep( 20000 );
+ }
+ fprintf( f_cmd, "SetPosition %d 0 0\n", i_overlay );
+ fflush( f_cmd );
+ fscanf( f_res, "%8s", &psz_resp );
+ if( IsFailure( psz_resp ) ) {
+ printf( " failed\n" );
+ exit( -1 );
+ }
+ printf( " done\n" );
+
+ printf( "Removing image..." );
+ fprintf( f_cmd, "DeleteImage %d\n", i_overlay );
+ fflush( f_cmd );
+ fscanf( f_res, "%8s", &psz_resp );
+ if( IsFailure( psz_resp ) ) {
+ printf( " failed\n" );
+ exit( -1 );
+ }
+ printf( " done\n" );
+}
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