/***************************************************************************** * yuy2_i422.c : Packed YUV 4:2:2 to Planar YUV conversion module for vlc ***************************************************************************** * Copyright (C) 2007 VLC authors and VideoLAN * $Id$ * * Authors: Antoine Cellerier * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser 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 *****************************************************************************/ #ifdef HAVE_CONFIG_H # include "config.h" #endif #include #include #include #include #define SRC_FOURCC "YUY2,YUNV,YVYU,UYVY,UYNV,Y422" #define DEST_FOURCC "I422" /***************************************************************************** * Local and extern prototypes. *****************************************************************************/ static int Activate ( vlc_object_t * ); static void YUY2_I422 ( filter_t *, picture_t *, picture_t * ); static void YVYU_I422 ( filter_t *, picture_t *, picture_t * ); static void UYVY_I422 ( filter_t *, picture_t *, picture_t * ); static picture_t *YUY2_I422_Filter ( filter_t *, picture_t * ); static picture_t *YVYU_I422_Filter ( filter_t *, picture_t * ); static picture_t *UYVY_I422_Filter ( filter_t *, picture_t * ); /***************************************************************************** * Module descriptor *****************************************************************************/ vlc_module_begin () set_description( N_("Conversions from " SRC_FOURCC " to " DEST_FOURCC) ) set_capability( "video converter", 80 ) set_callbacks( Activate, NULL ) vlc_module_end () /***************************************************************************** * Activate: allocate a chroma function ***************************************************************************** * This function allocates and initializes a chroma function *****************************************************************************/ static int Activate( vlc_object_t *p_this ) { filter_t *p_filter = (filter_t *)p_this; if( p_filter->fmt_in.video.i_width & 1 || p_filter->fmt_in.video.i_height & 1 ) { return -1; } if( p_filter->fmt_in.video.i_width != p_filter->fmt_out.video.i_width || p_filter->fmt_in.video.i_height != p_filter->fmt_out.video.i_height || p_filter->fmt_in.video.orientation != p_filter->fmt_out.video.orientation) return -1; switch( p_filter->fmt_out.video.i_chroma ) { case VLC_CODEC_I422: switch( p_filter->fmt_in.video.i_chroma ) { case VLC_CODEC_YUYV: p_filter->pf_video_filter = YUY2_I422_Filter; break; case VLC_CODEC_YVYU: p_filter->pf_video_filter = YVYU_I422_Filter; break; case VLC_CODEC_UYVY: p_filter->pf_video_filter = UYVY_I422_Filter; break; default: return -1; } break; default: return -1; } return 0; } /* Following functions are local */ VIDEO_FILTER_WRAPPER( YUY2_I422 ) VIDEO_FILTER_WRAPPER( YVYU_I422 ) VIDEO_FILTER_WRAPPER( UYVY_I422 ) /***************************************************************************** * YUY2_I422: packed YUY2 4:2:2 to planar YUV 4:2:2 *****************************************************************************/ static void YUY2_I422( filter_t *p_filter, picture_t *p_source, picture_t *p_dest ) { uint8_t *p_line = p_source->p->p_pixels; uint8_t *p_y = p_dest->Y_PIXELS; uint8_t *p_u = p_dest->U_PIXELS; uint8_t *p_v = p_dest->V_PIXELS; int i_x, i_y; const int i_dest_margin = p_dest->p[0].i_pitch - p_dest->p[0].i_visible_pitch; const int i_dest_margin_c = p_dest->p[1].i_pitch - p_dest->p[1].i_visible_pitch; const int i_source_margin = p_source->p->i_pitch - p_source->p->i_visible_pitch; for( i_y = p_filter->fmt_out.video.i_height ; i_y-- ; ) { for( i_x = p_filter->fmt_out.video.i_width / 8 ; i_x-- ; ) { #define C_YUYV_YUV422( p_line, p_y, p_u, p_v ) \ *p_y++ = *p_line++; *p_u++ = *p_line++; \ *p_y++ = *p_line++; *p_v++ = *p_line++ C_YUYV_YUV422( p_line, p_y, p_u, p_v ); C_YUYV_YUV422( p_line, p_y, p_u, p_v ); C_YUYV_YUV422( p_line, p_y, p_u, p_v ); C_YUYV_YUV422( p_line, p_y, p_u, p_v ); } for( i_x = ( p_filter->fmt_out.video.i_width % 8 ) / 2; i_x-- ; ) { C_YUYV_YUV422( p_line, p_y, p_u, p_v ); } p_line += i_source_margin; p_y += i_dest_margin; p_u += i_dest_margin_c; p_v += i_dest_margin_c; } } /***************************************************************************** * YVYU_I422: packed YVYU 4:2:2 to planar YUV 4:2:2 *****************************************************************************/ static void YVYU_I422( filter_t *p_filter, picture_t *p_source, picture_t *p_dest ) { uint8_t *p_line = p_source->p->p_pixels; uint8_t *p_y = p_dest->Y_PIXELS; uint8_t *p_u = p_dest->U_PIXELS; uint8_t *p_v = p_dest->V_PIXELS; int i_x, i_y; const int i_dest_margin = p_dest->p[0].i_pitch - p_dest->p[0].i_visible_pitch; const int i_dest_margin_c = p_dest->p[1].i_pitch - p_dest->p[1].i_visible_pitch; const int i_source_margin = p_source->p->i_pitch - p_source->p->i_visible_pitch; for( i_y = p_filter->fmt_out.video.i_height ; i_y-- ; ) { for( i_x = p_filter->fmt_out.video.i_width / 8 ; i_x-- ; ) { #define C_YVYU_YUV422( p_line, p_y, p_u, p_v ) \ *p_y++ = *p_line++; *p_v++ = *p_line++; \ *p_y++ = *p_line++; *p_u++ = *p_line++ C_YVYU_YUV422( p_line, p_y, p_u, p_v ); C_YVYU_YUV422( p_line, p_y, p_u, p_v ); C_YVYU_YUV422( p_line, p_y, p_u, p_v ); C_YVYU_YUV422( p_line, p_y, p_u, p_v ); } for( i_x = ( p_filter->fmt_out.video.i_width % 8 ) / 2; i_x-- ; ) { C_YVYU_YUV422( p_line, p_y, p_u, p_v ); } p_line += i_source_margin; p_y += i_dest_margin; p_u += i_dest_margin_c; p_v += i_dest_margin_c; } } /***************************************************************************** * UYVY_I422: packed UYVY 4:2:2 to planar YUV 4:2:2 *****************************************************************************/ static void UYVY_I422( filter_t *p_filter, picture_t *p_source, picture_t *p_dest ) { uint8_t *p_line = p_source->p->p_pixels; uint8_t *p_y = p_dest->Y_PIXELS; uint8_t *p_u = p_dest->U_PIXELS; uint8_t *p_v = p_dest->V_PIXELS; int i_x, i_y; const int i_dest_margin = p_dest->p[0].i_pitch - p_dest->p[0].i_visible_pitch; const int i_dest_margin_c = p_dest->p[1].i_pitch - p_dest->p[1].i_visible_pitch; const int i_source_margin = p_source->p->i_pitch - p_source->p->i_visible_pitch; for( i_y = p_filter->fmt_out.video.i_height ; i_y-- ; ) { for( i_x = p_filter->fmt_out.video.i_width / 8 ; i_x-- ; ) { #define C_UYVY_YUV422( p_line, p_y, p_u, p_v ) \ *p_u++ = *p_line++; *p_y++ = *p_line++; \ *p_v++ = *p_line++; *p_y++ = *p_line++ C_UYVY_YUV422( p_line, p_y, p_u, p_v ); C_UYVY_YUV422( p_line, p_y, p_u, p_v ); C_UYVY_YUV422( p_line, p_y, p_u, p_v ); C_UYVY_YUV422( p_line, p_y, p_u, p_v ); } for( i_x = ( p_filter->fmt_out.video.i_width % 8 ) / 2; i_x-- ; ) { C_UYVY_YUV422( p_line, p_y, p_u, p_v ); } p_line += i_source_margin; p_y += i_dest_margin; p_u += i_dest_margin_c; p_v += i_dest_margin_c; } }