mirror of
https://github.com/videolan/vlc.git
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* logo.c : a little filter to put a PNG picture on video output (use mouse features :)
This commit is contained in:
Simon Latapie
parent
1eeede38ba
commit
79ddd26444
13
configure.ac
13
configure.ac
@ -1,5 +1,5 @@
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dnl Autoconf settings for vlc
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dnl $Id: configure.ac,v 1.22 2003/07/02 22:47:42 sam Exp $
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dnl $Id: configure.ac,v 1.23 2003/07/03 19:25:51 garf Exp $
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AC_INIT(vlc,0.6.0)
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@ -1928,6 +1928,17 @@ You also need to check that you have a libogg posterior to the 1.0 release.])],
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])
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fi
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dnl
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dnl Video Filters
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dnl
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dnl
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dnl png
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dnl
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AC_CHECK_HEADERS(png.h, [
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AX_ADD_LDFLAGS([logo],[-lpng])
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AX_ADD_PLUGINS([logo])])
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dnl
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dnl Video plugins
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dnl
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@ -7,4 +7,5 @@ SOURCES_clone = clone.c
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SOURCES_crop = crop.c
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SOURCES_motionblur = motionblur.c
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SOURCES_osdtext = osd_text.c
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SOURCES_logo = logo.c
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noinst_HEADERS += filter_common.h
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479
modules/video_filter/logo.c
Normal file
479
modules/video_filter/logo.c
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@ -0,0 +1,479 @@
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/*****************************************************************************
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* logo.c : logo video plugin for vlc
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*****************************************************************************
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* Copyright (C) 2000, 2001, 2002, 2003 VideoLAN
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* $Id: logo.c,v 1.1 2003/07/03 19:25:51 garf Exp $
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*
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* Authors: Simon Latapie <garf@videolan.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
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*****************************************************************************/
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/*****************************************************************************
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* Preamble
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*****************************************************************************/
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#include <stdlib.h> /* malloc(), free() */
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#include <string.h>
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#include <png.h>
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#include <vlc/vlc.h>
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#include <vlc/vout.h>
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#include "filter_common.h"
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/*****************************************************************************
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* Local prototypes
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*****************************************************************************/
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static int Create ( vlc_object_t * );
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static void Destroy ( vlc_object_t * );
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static int Init ( vout_thread_t * );
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static void End ( vout_thread_t * );
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static void Render ( vout_thread_t *, picture_t * );
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static int SendEvents( vlc_object_t *, char const *,
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vlc_value_t, vlc_value_t, void * );
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static int MouseEvent( vlc_object_t *, char const *,
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vlc_value_t , vlc_value_t , void * );
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/*****************************************************************************
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* Module descriptor
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*****************************************************************************/
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#define FILE_TEXT N_("Logo File")
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#define FILE_LONGTEXT N_("It must be a PNG in RGBA 8bits (for now)")
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#define POSX_TEXT N_("x postion of the logo")
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#define POSX_LONGTEXT N_("You can move the logo by left-clicking on it" )
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#define POSY_TEXT N_("y position of the logo")
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#define POSY_LONGTEXT N_("You can move the logo by left-clicking on it" )
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#define TRANS_TEXT N_("transparency of the logo")
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#define TRANS_LONGTEXT N_("You can change it by middle-clicking and moving mouse left or right")
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vlc_module_begin();
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add_category_hint( N_("logo"), NULL, VLC_FALSE );
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add_file( "logo_file", NULL, NULL, FILE_TEXT, FILE_LONGTEXT, VLC_FALSE );
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add_integer( "logo_x", 0, NULL, POSX_TEXT, POSX_LONGTEXT, VLC_FALSE );
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add_integer( "logo_y", 0, NULL, POSY_TEXT, POSY_LONGTEXT, VLC_FALSE );
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add_float( "logo_transparency", 1, NULL, TRANS_TEXT, TRANS_LONGTEXT, VLC_FALSE );
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set_description( _("logo video filter") );
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set_capability( "video filter", 0 );
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add_shortcut( "logo" );
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set_callbacks( Create, Destroy );
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vlc_module_end();
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/*****************************************************************************
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* vout_sys_t: logo video output method descriptor
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*****************************************************************************
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* This structure is part of the video output thread descriptor.
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* It describes the Invert specific properties of an output thread.
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*****************************************************************************/
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struct vout_sys_t
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{
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vout_thread_t *p_vout;
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png_uint_32 height;
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int bit_depth;
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png_uint_32 width;
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uint8_t * png_image[3];
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uint8_t * png_image_u;
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uint8_t * png_image_v;
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uint8_t * png_image_a[3];
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uint8_t * png_image_a_little;
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int error;
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int posx, posy;
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int trans;
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};
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/*****************************************************************************
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* Create: allocates logo video thread output method
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*****************************************************************************
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* This function allocates and initializes a Invert vout method.
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*****************************************************************************/
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static int Create( vlc_object_t *p_this )
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{
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vout_thread_t *p_vout = (vout_thread_t *)p_this;
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/* Allocate structure */
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p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
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if( p_vout->p_sys == NULL )
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{
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msg_Err( p_vout, "out of memory" );
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return VLC_ENOMEM;
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}
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p_vout->pf_init = Init;
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p_vout->pf_end = End;
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p_vout->pf_manage = NULL;
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p_vout->pf_render = Render;
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p_vout->pf_display = NULL;
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return VLC_SUCCESS;
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}
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/*****************************************************************************
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* Init: initialize logo video thread output method
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*****************************************************************************/
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static int Init( vout_thread_t *p_vout )
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{
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int i_index;
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picture_t *p_pic;
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char * filename;
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/* read png file */
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filename = config_GetPsz( p_vout, "logo_file" );
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FILE *fp = fopen( filename , "rb");
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png_structp png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL , NULL , NULL);
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png_infop info_ptr = png_create_info_struct(png_ptr);
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int color_type;
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int interlace_type;
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int compression_type;
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int filter_type;
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png_bytep * row_pointers;
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unsigned int i;
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unsigned int j;
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int temp;
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int i_size;
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if (fp == NULL)
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{
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p_vout->p_sys->error=1;
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msg_Err( p_vout , "file not found %s", filename );
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free( filename );
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} else
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{
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free( filename );
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p_vout->p_sys->error=0;
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png_init_io(png_ptr, fp);
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png_read_info(png_ptr, info_ptr);
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png_get_IHDR(png_ptr, info_ptr, &p_vout->p_sys->width, &p_vout->p_sys->height,
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&p_vout->p_sys->bit_depth, &color_type, &interlace_type,
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&compression_type, &filter_type);
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row_pointers= malloc( sizeof(png_bytep) * p_vout->p_sys->height );
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for( i = 0; i < p_vout->p_sys->height; i++ )
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{
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row_pointers[i] = malloc( 4 * ( p_vout->p_sys->bit_depth + 7 ) / 8 * p_vout->p_sys->width );
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}
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png_read_image(png_ptr, row_pointers);
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fclose(fp);
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/* finish to read the image in the file. Now We have to convert it YUV */
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/* initialize yuv plans of the image */
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i_size = p_vout->p_sys->height * p_vout->p_sys->width;
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p_vout->p_sys->png_image[0] = malloc( i_size );
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p_vout->p_sys->png_image[1] = malloc( i_size / 4 );
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p_vout->p_sys->png_image[2] = malloc( i_size / 4 );
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p_vout->p_sys->png_image_a[0] = malloc( i_size );
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p_vout->p_sys->png_image_a[1] = malloc( i_size / 4 );
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p_vout->p_sys->png_image_a[2] = p_vout->p_sys->png_image_a[1];
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/* conversion */
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j = 0;
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for( i= 0; i < p_vout->p_sys->height * p_vout->p_sys->width ; i++)
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{
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uint8_t (*p)[4];
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int x;
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int y;
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x = i % p_vout->p_sys->width;
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y = i / p_vout->p_sys->width;
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/* FIXME FIXME */
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p = (void*)row_pointers[y];
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p_vout->p_sys->png_image_a[0][i]= p[x][3];
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p_vout->p_sys->png_image[0][i]= (p[x][0] * 257
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+ p[x][1] * 504
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+ p[x][2] * 98)/1000 + 16;
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if( ( x % 2 == 0 ) && ( y % 2 == 0 ) )
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{
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temp = (p[x][2] * 439
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- p[x][0] * 148
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- p[x][1] * 291)/1000 + 128;
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temp = (uint8_t)( temp < 0 ? 0 : temp );
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p_vout->p_sys->png_image[1][j] = temp;
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temp = ( p[x][0] * 439
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- p[x][1] * 368
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- p[x][2] * 71)/1000 + 128;
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temp = __MAX( __MIN( temp, 255 ), 0 );
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p_vout->p_sys->png_image[2][j] = (uint8_t)( temp < 0 ? 0 : temp );
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p_vout->p_sys->png_image_a[1][j] = p_vout->p_sys->png_image_a[0][i];
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j++;
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}
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}
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/* now we can free row_pointers*/
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free(row_pointers);
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}
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I_OUTPUTPICTURES = 0;
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/* Initialize the output structure */
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p_vout->output.i_chroma = p_vout->render.i_chroma;
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p_vout->output.i_width = p_vout->render.i_width;
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p_vout->output.i_height = p_vout->render.i_height;
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p_vout->output.i_aspect = p_vout->render.i_aspect;
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/* Try to open the real video output */
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msg_Dbg( p_vout, "spawning the real video output" );
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p_vout->p_sys->p_vout = vout_Create( p_vout,
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p_vout->render.i_width, p_vout->render.i_height,
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p_vout->render.i_chroma, p_vout->render.i_aspect );
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/* Everything failed */
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if( p_vout->p_sys->p_vout == NULL )
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{
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msg_Err( p_vout, "can't open vout, aborting" );
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return VLC_EGENERIC;
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}
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var_AddCallback( p_vout->p_sys->p_vout, "mouse-x", MouseEvent, p_vout);
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var_AddCallback( p_vout->p_sys->p_vout, "mouse-y", MouseEvent, p_vout);
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ALLOCATE_DIRECTBUFFERS( VOUT_MAX_PICTURES );
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ADD_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );
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p_vout->p_sys->posx = config_GetInt( p_vout, "logo_x" );
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p_vout->p_sys->posy = config_GetInt( p_vout, "logo_y" );
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p_vout->p_sys->trans = (int)(config_GetFloat( p_vout, "logo_transparency" ) * 255);
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return VLC_SUCCESS;
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}
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/*****************************************************************************
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* End: terminate logo video thread output method
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*****************************************************************************/
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static void End( vout_thread_t *p_vout )
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{
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int i_index;
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/* Free the fake output buffers we allocated */
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for( i_index = I_OUTPUTPICTURES ; i_index ; )
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{
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i_index--;
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free( PP_OUTPUTPICTURE[ i_index ]->p_data_orig );
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}
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var_DelCallback( p_vout->p_sys->p_vout, "mouse-x", MouseEvent, p_vout);
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var_DelCallback( p_vout->p_sys->p_vout, "mouse-y", MouseEvent, p_vout);
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DEL_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );
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vlc_object_detach( p_vout->p_sys->p_vout );
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vout_Destroy( p_vout->p_sys->p_vout );
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config_PutInt( p_vout, "logo_x", p_vout->p_sys->posx );
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config_PutInt( p_vout, "logo_y", p_vout->p_sys->posy );
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config_PutFloat( p_vout, "logo_transparency", (float)(p_vout->p_sys->trans) / 255.0 );
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if (p_vout->p_sys->error == 0)
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{
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free(p_vout->p_sys->png_image[0]);
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free(p_vout->p_sys->png_image[1]);
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free(p_vout->p_sys->png_image[2]);
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free(p_vout->p_sys->png_image_a[0]);
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free(p_vout->p_sys->png_image_a[1]);
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}
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}
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/*****************************************************************************
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* Destroy: destroy logo video thread output method
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*****************************************************************************
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* Terminate an output method created by InvertCreateOutputMethod
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*****************************************************************************/
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static void Destroy( vlc_object_t *p_this )
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{
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vout_thread_t *p_vout = (vout_thread_t *)p_this;
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free( p_vout->p_sys );
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}
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/*****************************************************************************
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* Render: displays previously rendered output
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*****************************************************************************
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* This function send the currently rendered image to Invert image, waits
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* until it is displayed and switch the two rendering buffers, preparing next
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* frame.
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*****************************************************************************/
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static void Render( vout_thread_t *p_vout, picture_t *p_pic )
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{
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picture_t *p_outpic;
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int i_index;
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int i_pic_width;
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int tr;
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/* This is a new frame. Get a structure from the video_output. */
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while( ( p_outpic = vout_CreatePicture( p_vout->p_sys->p_vout, 0, 0, 0 ) )
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== NULL )
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{
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if( p_vout->b_die || p_vout->b_error )
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{
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return;
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}
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msleep( VOUT_OUTMEM_SLEEP );
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}
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vout_DatePicture( p_vout->p_sys->p_vout, p_outpic, p_pic->date );
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vout_LinkPicture( p_vout->p_sys->p_vout, p_outpic );
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i_pic_width=p_vout->output.i_width;
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tr = p_vout->p_sys->trans;
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for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
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{
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memcpy( p_outpic->p[i_index].p_pixels,
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p_pic->p[i_index].p_pixels,
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p_pic->p[i_index].i_lines * p_pic->p[i_index].i_pitch);
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if (p_vout->p_sys->error == 0)
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{
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unsigned int i;
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unsigned int j;
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uint8_t *p_out, *p_in_a, *p_in;
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int i_delta;
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unsigned int i_max;
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unsigned int j_max;
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if (i_index == 0)
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{
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p_out = p_outpic->p[i_index].p_pixels + p_vout->p_sys->posy * i_pic_width + p_vout->p_sys->posx;
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i_delta = i_pic_width - p_vout->p_sys->width;
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i_max = p_vout->p_sys->height;
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j_max = p_vout->p_sys->width;
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} else
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{
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p_out = p_outpic->p[i_index].p_pixels + (p_vout->p_sys->posy / 2)* (i_pic_width / 2) + p_vout->p_sys->posx / 2;
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i_delta = (i_pic_width - p_vout->p_sys->width) / 2;
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i_max = p_vout->p_sys->height / 2;
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j_max = p_vout->p_sys->width / 2;
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}
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p_in_a = p_vout->p_sys->png_image_a[i_index];
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p_in = p_vout->p_sys->png_image[i_index];
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for( i = 0; i < i_max ; i++ )
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{
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for( j = 0 ; j < j_max ; j++)
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{
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*p_out = ( *p_out * ( 65025 - *p_in_a * tr) + *p_in * *p_in_a * tr) >> 16;
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p_out++;
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p_in++;
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p_in_a++;
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}
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p_out += i_delta;
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}
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}
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}
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vout_UnlinkPicture( p_vout->p_sys->p_vout, p_outpic );
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vout_DisplayPicture( p_vout->p_sys->p_vout, p_outpic );
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}
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/*****************************************************************************
|
||||
* SendEvents: forward mouse and keyboard events to the parent p_vout
|
||||
*****************************************************************************/
|
||||
static int SendEvents( vlc_object_t *p_this, char const *psz_var,
|
||||
vlc_value_t oldval, vlc_value_t newval, void *p_data )
|
||||
{
|
||||
var_Set( (vlc_object_t *)p_data, psz_var, newval );
|
||||
|
||||
return VLC_SUCCESS;
|
||||
}
|
||||
|
||||
|
||||
/*****************************************************************************
|
||||
* MouseEvent: callback for mouse events
|
||||
******************************************************************************/
|
||||
static int MouseEvent( vlc_object_t *p_this, char const *psz_var,
|
||||
vlc_value_t oldval, vlc_value_t newval, void *p_data )
|
||||
{
|
||||
vout_thread_t *p_vout = (vout_thread_t*)p_data;
|
||||
vlc_value_t valb;
|
||||
int i_delta;
|
||||
|
||||
#define posx p_vout->p_sys->posx
|
||||
#define posy p_vout->p_sys->posy
|
||||
#define width p_vout->p_sys->width
|
||||
#define height p_vout->p_sys->height
|
||||
#define trans p_vout->p_sys->trans
|
||||
|
||||
var_Get( p_vout->p_sys->p_vout, "mouse-button-down", &valb );
|
||||
|
||||
i_delta = newval.i_int - oldval.i_int;
|
||||
|
||||
if ((valb.i_int & 0x2) == 2 && psz_var[6] == 'x' )
|
||||
{
|
||||
trans = __MIN( __MAX( trans + i_delta , 0 ) , 255 );
|
||||
return VLC_SUCCESS;
|
||||
}
|
||||
if ((valb.i_int & 0x1) == 0)
|
||||
{
|
||||
return VLC_SUCCESS;
|
||||
}
|
||||
|
||||
if( psz_var[6] == 'x' )
|
||||
{
|
||||
vlc_value_t valy;
|
||||
var_Get( p_vout->p_sys->p_vout, "mouse-y", &valy );
|
||||
if ((newval.i_int >= (int)posx) && (valy.i_int >= (int)posy) && (newval.i_int <= (int)(posx + width)) && (valy.i_int <= (int)(posy + height)))
|
||||
{
|
||||
posx = __MIN( __MAX( posx + i_delta , 0 ) , p_vout->output.i_width - width );
|
||||
}
|
||||
|
||||
}
|
||||
else if( psz_var[6] == 'y' )
|
||||
{
|
||||
vlc_value_t valx;
|
||||
var_Get( p_vout->p_sys->p_vout, "mouse-x", &valx );
|
||||
if ((valx.i_int >= (int)posx) && (newval.i_int >= (int)posy) && (valx.i_int <= (int)(posx + width)) && (newval.i_int <= (int)(posy + height)))
|
||||
{
|
||||
posy = __MIN( __MAX( posy + i_delta , 0 ) , p_vout->output.i_height - height );
|
||||
}
|
||||
|
||||
}
|
||||
else if( psz_var[6] == 'c' )
|
||||
{
|
||||
if ((valb.i_int & 0x8) == 1)
|
||||
{
|
||||
p_vout->p_sys->trans++;
|
||||
}
|
||||
else if ((valb.i_int & 0x10) == 1)
|
||||
{
|
||||
p_vout->p_sys->trans--;
|
||||
}
|
||||
}
|
||||
|
||||
#undef posx
|
||||
#undef posy
|
||||
#undef width
|
||||
#undef height
|
||||
#undef trans
|
||||
|
||||
return VLC_SUCCESS;
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user