--- /dev/null
+/*****************************************************************************
+ * yuv.c : YUV plans modifier video plugin for vlc
+ *****************************************************************************
+ * Copyright (C) 2000, 2001 VideoLAN
+ * $Id: yuv.c,v 1.1 2002/10/26 01:08:13 garf Exp $
+ *
+ * Authors: Simon Latapie <garf@via.ecp.fr>, Samuel Hocevar <sam@zoy.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>
+#include <stdlib.h> /* malloc(), free() */
+#include <string.h>
+
+#include <vlc/vlc.h>
+#include <vlc/vout.h>
+
+#include "filter_common.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 void Render ( vout_thread_t *, picture_t * );
+
+/*****************************************************************************
+ * Module descriptor
+ *****************************************************************************/
+
+#define Y_TEXT N_("Y plan modifier")
+#define Y_LONGTEXT N_("between 0 and 255, default to 255")
+#define Y_INV_TEXT N_("invert Y plan")
+#define Y_INV_LONGTEXT N_("same function as invert filter")
+
+#define U_TEXT N_("U plan modifier")
+#define U_LONGTEXT N_("between 0 and 255, default to 255")
+#define U_INV_TEXT N_("invert U plan")
+#define U_INV_LONGTEXT N_("same function as invert filter")
+
+#define V_TEXT N_("V plan modifier")
+#define V_LONGTEXT N_("between 0 and 255, default to 255")
+#define V_INV_TEXT N_("invert V plan")
+#define V_INV_LONGTEXT N_("same function as invert filter")
+
+vlc_module_begin();
+ add_category_hint( N_("Miscellaneous"), NULL );
+ add_integer( "Y plan", 255, NULL, Y_TEXT, Y_LONGTEXT );
+ add_bool( "invert Y", 0, NULL, Y_INV_TEXT, Y_INV_LONGTEXT );
+ add_integer( "U plan", 255, NULL, U_TEXT, U_LONGTEXT );
+ add_bool( "invert U", 0, NULL, U_INV_TEXT, U_INV_LONGTEXT );
+ add_integer( "V plan", 255, NULL, V_TEXT, V_LONGTEXT );
+ add_bool( "invert V", 0, NULL, V_INV_TEXT, V_INV_LONGTEXT );
+ set_description( _("yuv plan modifier filter") );
+ set_capability( "video filter", 0 );
+ add_shortcut( "yuv" );
+ set_callbacks( Create, Destroy );
+vlc_module_end();
+
+/*****************************************************************************
+ * vout_sys_t: YUV video output method descriptor
+ *****************************************************************************
+ * This structure is part of the video output thread descriptor.
+ * It describes the YUV specific properties of an output thread.
+ *****************************************************************************/
+struct vout_sys_t
+{
+ int i_coeff[3];
+ vlc_bool_t b_invert[3];
+ vout_thread_t *p_vout;
+};
+
+/*****************************************************************************
+ * Create: allocates YUV video thread output method
+ *****************************************************************************
+ * This function allocates and initializes a YUV 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 );
+ }
+
+ p_vout->pf_init = Init;
+ p_vout->pf_end = End;
+ p_vout->pf_manage = NULL;
+ p_vout->pf_render = Render;
+ p_vout->pf_display = NULL;
+
+ return( 0 );
+}
+
+/*****************************************************************************
+ * Init: initialize YUV video thread output method
+ *****************************************************************************/
+static int Init( vout_thread_t *p_vout )
+{
+ int i_index;
+ picture_t *p_pic;
+
+ I_OUTPUTPICTURES = 0;
+
+ /* Initialize the output structure */
+ p_vout->output.i_chroma = p_vout->render.i_chroma;
+ p_vout->output.i_width = p_vout->render.i_width;
+ p_vout->output.i_height = p_vout->render.i_height;
+ p_vout->output.i_aspect = p_vout->render.i_aspect;
+
+ /* Try to open the real video output */
+ msg_Dbg( p_vout, "spawning the real video output" );
+
+ p_vout->p_sys->p_vout =
+ vout_CreateThread( p_vout,
+ p_vout->render.i_width, p_vout->render.i_height,
+ p_vout->render.i_chroma, p_vout->render.i_aspect );
+
+ /* Everything failed */
+ if( p_vout->p_sys->p_vout == NULL )
+ {
+ msg_Err( p_vout, "can't open vout, aborting" );
+
+ return( 0 );
+ }
+
+ ALLOCATE_DIRECTBUFFERS( VOUT_MAX_PICTURES );
+
+ return( 0 );
+}
+
+/*****************************************************************************
+ * End: terminate YUV video thread output method
+ *****************************************************************************/
+static void End( vout_thread_t *p_vout )
+{
+ int i_index;
+
+ /* Free the fake output buffers we allocated */
+ for( i_index = I_OUTPUTPICTURES ; i_index ; )
+ {
+ i_index--;
+ free( PP_OUTPUTPICTURE[ i_index ]->p_data_orig );
+ }
+}
+
+/*****************************************************************************
+ * Destroy: destroy YUV video thread output method
+ *****************************************************************************
+ * Terminate an output method created by YUVCreateOutputMethod
+ *****************************************************************************/
+static void Destroy( vlc_object_t *p_this )
+{
+ vout_thread_t *p_vout = (vout_thread_t *)p_this;
+
+ vout_DestroyThread( p_vout->p_sys->p_vout );
+
+ free( p_vout->p_sys );
+}
+
+/*****************************************************************************
+ * Render: displays previously rendered output
+ *****************************************************************************
+ * This function send the currently rendered image to YUV modified image,
+ * waits until it is displayed and switch the two rendering buffers, preparing
+ * next frame.
+ *****************************************************************************/
+static void Render( vout_thread_t *p_vout, picture_t *p_pic )
+{
+ picture_t *p_outpic;
+ int i_index;
+
+ /* This is a new frame. Get a structure from the video_output. */
+
+ p_vout->p_sys->i_coeff[0] = config_GetInt( p_vout, "Y plan" ) ;
+ p_vout->p_sys->i_coeff[1] = config_GetInt( p_vout, "U plan" ) ;
+ p_vout->p_sys->i_coeff[2] = config_GetInt( p_vout, "V plan" ) ;
+
+ p_vout->p_sys->b_invert[0] = config_GetInt( p_vout, "invert Y" ) ;
+ p_vout->p_sys->b_invert[1] = config_GetInt( p_vout, "invert U" ) ;
+ p_vout->p_sys->b_invert[2] = config_GetInt( p_vout, "invert V" ) ;
+
+ while( ( p_outpic = vout_CreatePicture( p_vout->p_sys->p_vout, 0, 0, 0 ) )
+ == NULL )
+ {
+ if( p_vout->b_die || p_vout->b_error )
+ {
+ return;
+ }
+ msleep( VOUT_OUTMEM_SLEEP );
+ }
+
+ vout_DatePicture( p_vout->p_sys->p_vout, p_outpic, p_pic->date );
+ vout_LinkPicture( p_vout->p_sys->p_vout, p_outpic );
+
+ for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
+ {
+ u8 *p_in, *p_in_end, *p_out;
+ s32 i_coeff;
+ vlc_bool_t b_inv;
+
+ i_coeff = p_vout->p_sys->i_coeff[i_index];
+ b_inv = p_vout->p_sys->b_invert[i_index];
+ p_in = p_pic->p[i_index].p_pixels;
+ p_in_end = p_in + p_pic->p[i_index].i_lines
+ * p_pic->p[i_index].i_pitch -8;
+
+ p_out = p_outpic->p[i_index].p_pixels;
+
+ for( ; p_in < p_in_end ; )
+ {
+ /* Do 8 pixels at a time */
+ *p_out = ( *p_in * i_coeff * (1 - 2 * b_inv)) >> 8; p_out++; p_in++;
+ *p_out = ( *p_in * i_coeff * (1 - 2 * b_inv)) >> 8; p_out++; p_in++;
+ *p_out = ( *p_in * i_coeff * (1 - 2 * b_inv)) >> 8; p_out++; p_in++;
+ *p_out = ( *p_in * i_coeff * (1 - 2 * b_inv)) >> 8; p_out++; p_in++;
+ *p_out = ( *p_in * i_coeff * (1 - 2 * b_inv)) >> 8; p_out++; p_in++;
+ *p_out = ( *p_in * i_coeff * (1 - 2 * b_inv)) >> 8; p_out++; p_in++;
+ *p_out = ( *p_in * i_coeff * (1 - 2 * b_inv)) >> 8; p_out++; p_in++;
+ *p_out = ( *p_in * i_coeff * (1 - 2 * b_inv)) >> 8; p_out++; p_in++;
+ }
+
+ p_in_end += 8;
+
+ for( ; p_in < p_in_end ; )
+ {
+ /* Do 1 pixel at a time */
+ *p_out = ( *p_in * i_coeff * (1 - 2 * b_inv)) >> 8; p_out++; p_in++;
+ }
+ }
+
+ vout_UnlinkPicture( p_vout->p_sys->p_vout, p_outpic );
+
+ vout_DisplayPicture( p_vout->p_sys->p_vout, p_outpic );
+}
+
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