--- /dev/null
+/*****************************************************************************
+ * extract.c : Extract RGB components
+ *****************************************************************************
+ * Copyright (C) 2000-2006 the VideoLAN team
+ * $Id$
+ *
+ * Authors: Antoine Cellerier <dionoea .t videolan d@t 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> /* malloc(), free() */
+#include <string.h>
+
+#include <vlc/vlc.h>
+#include <vlc_vout.h>
+
+#include "vlc_filter.h"
+
+/*****************************************************************************
+ * Local prototypes
+ *****************************************************************************/
+static int Create ( vlc_object_t * );
+static void Destroy ( vlc_object_t * );
+
+static picture_t *Filter( filter_t *, picture_t * );
+
+#define COMPONENT_TEXT N_("RGB component to extract")
+#define COMPONENT_LONGTEXT N_("RGB component to extract. 0 for Red, 1 for Green and 2 for Blue.")
+#define FILTER_PREFIX "extract-"
+
+static int pi_component_values[] = { 0, 1, 2 };
+static const char *ppsz_component_descriptions[] = { "Red", "Green", "Blue" };
+
+/*****************************************************************************
+ * Module descriptor
+ *****************************************************************************/
+vlc_module_begin();
+ set_description( _("Extract RGB component video filter") );
+ set_shortname( _("Extract" ));
+ set_category( CAT_VIDEO );
+ set_subcategory( SUBCAT_VIDEO_VFILTER );
+ set_capability( "video filter2", 0 );
+ add_shortcut( "extract" );
+
+ add_integer( FILTER_PREFIX "component", 0, NULL,
+ COMPONENT_TEXT, COMPONENT_LONGTEXT, VLC_FALSE );
+ change_integer_list( pi_component_values, ppsz_component_descriptions, 0 );
+
+ set_callbacks( Create, Destroy );
+vlc_module_end();
+
+static const char *ppsz_filter_options[] = {
+ "component", NULL
+};
+
+enum { RED, GREEN, BLUE };
+struct filter_sys_t
+{
+ int i_color;
+};
+
+/*****************************************************************************
+ * Create
+ *****************************************************************************/
+static int Create( vlc_object_t *p_this )
+{
+ filter_t *p_filter = (filter_t *)p_this;
+
+ /* Allocate structure */
+ p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
+ if( p_filter->p_sys == NULL )
+ {
+ msg_Err( p_filter, "out of memory" );
+ return VLC_ENOMEM;
+ }
+
+ config_ChainParse( p_filter, FILTER_PREFIX, ppsz_filter_options,
+ p_filter->p_cfg );
+
+ var_Create( p_filter, FILTER_PREFIX "component",
+ VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
+ p_filter->p_sys->i_color = var_GetInteger( p_filter,
+ FILTER_PREFIX "component" );
+
+ p_filter->pf_video_filter = Filter;
+
+ return VLC_SUCCESS;
+}
+
+/*****************************************************************************
+ * Destroy
+ *****************************************************************************/
+static void Destroy( vlc_object_t *p_this )
+{
+ filter_t *p_filter = (filter_t *)p_this;
+
+ free( p_filter->p_sys );
+}
+
+/*****************************************************************************
+ * Render
+ *****************************************************************************/
+static void get_red_from_yuv420( picture_t *, picture_t *, int, int, int );
+static void get_green_from_yuv420( picture_t *, picture_t *, int, int, int );
+static void get_blue_from_yuv420( picture_t *, picture_t *, int, int, int );
+static void get_red_from_yuv422( picture_t *, picture_t *, int, int, int );
+static void get_green_from_yuv422( picture_t *, picture_t *, int, int, int );
+static void get_blue_from_yuv422( picture_t *, picture_t *, int, int, int );
+
+static picture_t *Filter( filter_t *p_filter, picture_t *p_pic )
+{
+ picture_t *p_outpic;
+
+ if( !p_pic ) return NULL;
+
+ p_outpic = p_filter->pf_vout_buffer_new( p_filter );
+ if( !p_outpic )
+ {
+ msg_Warn( p_filter, "can't get output picture" );
+ if( p_pic->pf_release )
+ p_pic->pf_release( p_pic );
+ return NULL;
+ }
+
+ switch( p_pic->format.i_chroma )
+ {
+ case VLC_FOURCC('I','4','2','0'):
+ case VLC_FOURCC('I','Y','U','V'):
+ case VLC_FOURCC('J','4','2','0'):
+ case VLC_FOURCC('Y','V','1','2'):
+ switch( p_filter->p_sys->i_color )
+ {
+ case RED:
+ get_red_from_yuv420( p_pic, p_outpic,
+ Y_PLANE, U_PLANE, V_PLANE );
+ break;
+ case GREEN:
+ get_green_from_yuv420( p_pic, p_outpic,
+ Y_PLANE, U_PLANE, V_PLANE );
+ break;
+ case BLUE:
+ get_blue_from_yuv420( p_pic, p_outpic,
+ Y_PLANE, U_PLANE, V_PLANE );
+ break;
+ }
+ break;
+
+ case VLC_FOURCC('I','4','2','2'):
+ case VLC_FOURCC('J','4','2','2'):
+ switch( p_filter->p_sys->i_color )
+ {
+ case RED:
+ get_red_from_yuv422( p_pic, p_outpic,
+ Y_PLANE, U_PLANE, V_PLANE );
+ break;
+ case GREEN:
+ get_green_from_yuv422( p_pic, p_outpic,
+ Y_PLANE, U_PLANE, V_PLANE );
+ break;
+ case BLUE:
+ get_blue_from_yuv422( p_pic, p_outpic,
+ Y_PLANE, U_PLANE, V_PLANE );
+ break;
+ }
+ break;
+
+ default:
+ msg_Warn( p_filter, "Unsupported input chroma (%4s)",
+ (char*)&(p_pic->format.i_chroma) );
+ if( p_pic->pf_release )
+ p_pic->pf_release( p_pic );
+ return NULL;
+ }
+
+ p_outpic->date = p_pic->date;
+ p_outpic->b_force = p_pic->b_force;
+ p_outpic->i_nb_fields = p_pic->i_nb_fields;
+ p_outpic->b_progressive = p_pic->b_progressive;
+ p_outpic->b_top_field_first = p_pic->b_top_field_first;
+
+ if( p_pic->pf_release )
+ p_pic->pf_release( p_pic );
+
+ return p_outpic;
+}
+
+inline uint8_t crop( int a );
+inline uint8_t crop( int a )
+{
+ if( a < 0 ) return 0;
+ if( a > 255 ) return 255;
+ else return (uint8_t)a;
+}
+
+#define U 128
+#define V 128
+
+static void get_red_from_yuv420( picture_t *p_inpic, picture_t *p_outpic,
+ int yp, int up, int vp )
+{
+ uint8_t *y1in = p_inpic->p[yp].p_pixels;
+ uint8_t *y2in;
+ uint8_t *vin = p_inpic->p[vp].p_pixels;
+
+ uint8_t *y1out = p_outpic->p[yp].p_pixels;
+ uint8_t *y2out;
+ uint8_t *uout = p_outpic->p[up].p_pixels;
+ uint8_t *vout = p_outpic->p[vp].p_pixels;
+
+ const int i_pitch = p_inpic->p[yp].i_pitch;
+ const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
+ const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
+
+ const int i_uv_pitch = p_inpic->p[up].i_pitch;
+ const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
+
+ const uint8_t *yend = y1in + i_visible_lines * i_pitch;
+ while( y1in < yend )
+ {
+ const uint8_t *y1end = y1in + i_visible_pitch;
+ y2in = y1in + i_pitch;
+ y2out = y1out + i_pitch;
+ while( y1in < y1end )
+ {
+/*
+19595 0 27473
+-11058 0 -15504
+32768 0 45941
+*/
+ *uout++ = crop( (*y1in * -11058 + (*vin - V) * -15504)
+ / 65536 + U );
+ *vout++ = crop( (*y1in * 32768 + (*vin - V) * 45941)
+ / 65536 + V );
+ *y1out++ = crop( (*y1in++ * 19595 + (*vin - V) * 27473)
+ / 65536 );
+ *y1out++ = crop( (*y1in++ * 19595 + (*vin - V) * 27473)
+ / 65536 );
+ *y2out++ = crop( (*y2in++ * 19594 + (*vin - V) * 27473)
+ / 65536 );
+ *y2out++ = crop( (*y2in++ * 19594 + (*vin++ - V) * 27473)
+ / 65536 );
+ }
+ y1in += 2*i_pitch - i_visible_pitch;
+ y1out += 2*i_pitch - i_visible_pitch;
+ uout += i_uv_pitch - i_uv_visible_pitch;
+ vin += i_uv_pitch - i_uv_visible_pitch;
+ vout += i_uv_pitch - i_uv_visible_pitch;
+ }
+}
+
+static void get_green_from_yuv420( picture_t *p_inpic, picture_t *p_outpic,
+ int yp, int up, int vp )
+{
+ uint8_t *y1in = p_inpic->p[yp].p_pixels;
+ uint8_t *y2in;
+ uint8_t *uin = p_inpic->p[up].p_pixels;
+ uint8_t *vin = p_inpic->p[vp].p_pixels;
+
+ uint8_t *y1out = p_outpic->p[yp].p_pixels;
+ uint8_t *y2out;
+ uint8_t *uout = p_outpic->p[up].p_pixels;
+ uint8_t *vout = p_outpic->p[vp].p_pixels;
+
+ const int i_pitch = p_inpic->p[yp].i_pitch;
+ const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
+ const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
+
+ const int i_uv_pitch = p_inpic->p[up].i_pitch;
+ const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
+
+ const uint8_t *yend = y1in + i_visible_lines * i_pitch;
+ while( y1in < yend )
+ {
+ const uint8_t *y1end = y1in + i_visible_pitch;
+ y2in = y1in + i_pitch;
+ y2out = y1out + i_pitch;
+ while( y1in < y1end )
+ {
+/*
+38470 -13239 -27473
+-21710 7471 15504
+-27439 9443 19595
+*/
+ *uout++ = crop( (*y1in * -21710 + (*uin-U) * 7471 + (*vin-V) * 15504)
+ / 65536 + U );
+ *vout++ = crop( (*y1in * -27439 + (*uin-U) * 9443 + (*vin-V) * 19595)
+ / 65536 + V );
+ *y1out++ = crop( (*y1in++ * 38470 + (*uin-U) * -13239 + (*vin-V) * -27473)
+ / 65536 );
+ *y1out++ = crop( (*y1in++ * 38470 + (*uin-U) * -13239 + (*vin-V) * -27473)
+ / 65536 );
+ *y2out++ = crop( (*y2in++ * 38470 + (*uin-U) * -13239 + (*vin-V) * -27473)
+ / 65536 );
+ *y2out++ = crop( (*y2in++ * 38470 + (*uin++ - U) * -13239 + (*vin++ -128) * -27473)
+ / 65536 );
+ }
+ y1in += 2*i_pitch - i_visible_pitch;
+ y1out += 2*i_pitch - i_visible_pitch;
+ uin += i_uv_pitch - i_uv_visible_pitch;
+ uout += i_uv_pitch - i_uv_visible_pitch;
+ vin += i_uv_pitch - i_uv_visible_pitch;
+ vout += i_uv_pitch - i_uv_visible_pitch;
+ }
+}
+
+static void get_blue_from_yuv420( picture_t *p_inpic, picture_t *p_outpic,
+ int yp, int up, int vp )
+{
+ uint8_t *y1in = p_inpic->p[yp].p_pixels;
+ uint8_t *y2in;
+ uint8_t *uin = p_inpic->p[up].p_pixels;
+
+ uint8_t *y1out = p_outpic->p[yp].p_pixels;
+ uint8_t *y2out;
+ uint8_t *uout = p_outpic->p[up].p_pixels;
+ uint8_t *vout = p_outpic->p[vp].p_pixels;
+
+ const int i_pitch = p_inpic->p[yp].i_pitch;
+ const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
+ const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
+
+ const int i_uv_pitch = p_inpic->p[up].i_pitch;
+ const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
+
+ const uint8_t *yend = y1in + i_visible_lines * i_pitch;
+ while( y1in < yend )
+ {
+ const uint8_t *y1end = y1in + i_visible_pitch;
+ y2in = y1in + i_pitch;
+ y2out = y1out + i_pitch;
+ while( y1in < y1end )
+ {
+/*
+7471 13239 0
+32768 58065 0
+-5329 -9443 0
+*/
+ *uout++ = crop( (*y1in* 32768 + (*uin - U) * 58065 )
+ / 65536 + U );
+ *vout++ = crop( (*y1in * -5329 + (*uin - U) * -9443 )
+ / 65536 + V );
+ *y1out++ = crop( (*y1in++ * 7471 + (*uin - U) * 13239 )
+ / 65536 );
+ *y1out++ = crop( (*y1in++ * 7471 + (*uin - U) * 13239 )
+ / 65536 );
+ *y2out++ = crop( (*y2in++ * 7471 + (*uin - U) * 13239 )
+ / 65536 );
+ *y2out++ = crop( (*y2in++ * 7471 + (*uin++ - U) * 13239 )
+ / 65536 );
+ }
+ y1in += 2*i_pitch - i_visible_pitch;
+ y1out += 2*i_pitch - i_visible_pitch;
+ uin += i_uv_pitch - i_uv_visible_pitch;
+ uout += i_uv_pitch - i_uv_visible_pitch;
+ vout += i_uv_pitch - i_uv_visible_pitch;
+ }
+}
+
+static void get_red_from_yuv422( picture_t *p_inpic, picture_t *p_outpic,
+ int yp, int up, int vp )
+{
+ uint8_t *y1in = p_inpic->p[yp].p_pixels;
+ uint8_t *vin = p_inpic->p[vp].p_pixels;
+
+ uint8_t *y1out = p_outpic->p[yp].p_pixels;
+ uint8_t *uout = p_outpic->p[up].p_pixels;
+ uint8_t *vout = p_outpic->p[vp].p_pixels;
+
+ const int i_pitch = p_inpic->p[yp].i_pitch;
+ const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
+ const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
+
+ const int i_uv_pitch = p_inpic->p[up].i_pitch;
+ const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
+
+ const uint8_t *yend = y1in + i_visible_lines * i_pitch;
+ while( y1in < yend )
+ {
+ const uint8_t *y1end = y1in + i_visible_pitch;
+ while( y1in < y1end )
+ {
+/*
+19595 0 27473
+-11058 0 -15504
+32768 0 45941
+*/
+ *uout++ = crop( (*y1in * -11058 + (*vin - V) * -15504)
+ / 65536 + U );
+ *vout++ = crop( (*y1in * 32768 + (*vin - V) * 45941)
+ / 65536 + V );
+ *y1out++ = crop( (*y1in++ * 19595 + (*vin - V) * 27473)
+ / 65536 );
+ *y1out++ = crop( (*y1in++ * 19595 + (*vin++ - V) * 27473)
+ / 65536 );
+ }
+ y1in += i_pitch - i_visible_pitch;
+ y1out += i_pitch - i_visible_pitch;
+ uout += i_uv_pitch - i_uv_visible_pitch;
+ vin += i_uv_pitch - i_uv_visible_pitch;
+ vout += i_uv_pitch - i_uv_visible_pitch;
+ }
+}
+
+static void get_green_from_yuv422( picture_t *p_inpic, picture_t *p_outpic,
+ int yp, int up, int vp )
+{
+ uint8_t *y1in = p_inpic->p[yp].p_pixels;
+ uint8_t *uin = p_inpic->p[up].p_pixels;
+ uint8_t *vin = p_inpic->p[vp].p_pixels;
+
+ uint8_t *y1out = p_outpic->p[yp].p_pixels;
+ uint8_t *uout = p_outpic->p[up].p_pixels;
+ uint8_t *vout = p_outpic->p[vp].p_pixels;
+
+ const int i_pitch = p_inpic->p[yp].i_pitch;
+ const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
+ const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
+
+ const int i_uv_pitch = p_inpic->p[up].i_pitch;
+ const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
+
+ const uint8_t *yend = y1in + i_visible_lines * i_pitch;
+ while( y1in < yend )
+ {
+ const uint8_t *y1end = y1in + i_visible_pitch;
+ while( y1in < y1end )
+ {
+/*
+38470 -13239 -27473
+-21710 7471 15504
+-27439 9443 19595
+*/
+ *uout++ = crop( (*y1in * -21710 + (*uin-U) * 7471 + (*vin-V) * 15504)
+ / 65536 + U );
+ *vout++ = crop( (*y1in * -27439 + (*uin-U) * 9443 + (*vin-V) * 19595)
+ / 65536 + V );
+ *y1out++ = crop( (*y1in++ * 38470 + (*uin-U) * -13239 + (*vin-V) * -27473)
+ / 65536 );
+ *y1out++ = crop( (*y1in++ * 38470 + (*uin++-U) * -13239 + (*vin++-V) * -27473)
+ / 65536 );
+ }
+ y1in += i_pitch - i_visible_pitch;
+ y1out += i_pitch - i_visible_pitch;
+ uin += i_uv_pitch - i_uv_visible_pitch;
+ uout += i_uv_pitch - i_uv_visible_pitch;
+ vin += i_uv_pitch - i_uv_visible_pitch;
+ vout += i_uv_pitch - i_uv_visible_pitch;
+ }
+}
+
+static void get_blue_from_yuv422( picture_t *p_inpic, picture_t *p_outpic,
+ int yp, int up, int vp )
+{
+ uint8_t *y1in = p_inpic->p[yp].p_pixels;
+ uint8_t *uin = p_inpic->p[up].p_pixels;
+
+ uint8_t *y1out = p_outpic->p[yp].p_pixels;
+ uint8_t *uout = p_outpic->p[up].p_pixels;
+ uint8_t *vout = p_outpic->p[vp].p_pixels;
+
+ const int i_pitch = p_inpic->p[yp].i_pitch;
+ const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
+ const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
+
+ const int i_uv_pitch = p_inpic->p[up].i_pitch;
+ const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
+
+ const uint8_t *yend = y1in + i_visible_lines * i_pitch;
+ while( y1in < yend )
+ {
+ const uint8_t *y1end = y1in + i_visible_pitch;
+ while( y1in < y1end )
+ {
+/*
+7471 13239 0
+32768 58065 0
+-5329 -9443 0
+*/
+ *uout++ = crop( (*y1in* 32768 + (*uin - U) * 58065 )
+ / 65536 + U );
+ *vout++ = crop( (*y1in * -5329 + (*uin - U) * -9443 )
+ / 65536 + V );
+ *y1out++ = crop( (*y1in++ * 7471 + (*uin - U) * 13239 )
+ / 65536 );
+ *y1out++ = crop( (*y1in++ * 7471 + (*uin++ - U) * 13239 )
+ / 65536 );
+ }
+ y1in += i_pitch - i_visible_pitch;
+ y1out += i_pitch - i_visible_pitch;
+ uin += i_uv_pitch - i_uv_visible_pitch;
+ uout += i_uv_pitch - i_uv_visible_pitch;
+ vout += i_uv_pitch - i_uv_visible_pitch;
+ }
+}
projects / vlc / commitdiff