/***************************************************************************** * i420_nv12.c : Planar YUV 4:2:0 to SemiPlanar NV12 4:2:0 ***************************************************************************** * Copyright (C) 2016 VLC authors and VideoLAN * * Authors: Steve Lhomme * * 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 #include "copy.h" struct filter_sys_t { copy_cache_t cache; }; #define GET_PITCHES( pic ) { \ pic->p[Y_PLANE].i_pitch, \ pic->p[U_PLANE].i_pitch, \ pic->p[V_PLANE].i_pitch \ } #define GET_PLANES( pic ) { \ pic->p[Y_PLANE].p_pixels, \ pic->p[U_PLANE].p_pixels, \ pic->p[V_PLANE].p_pixels \ } /***************************************************************************** * planar I420 4:2:0 Y:U:V to planar NV12 4:2:0 Y:UV *****************************************************************************/ static void I420_NV12( filter_t *p_filter, picture_t *p_src, picture_t *p_dst ) { filter_sys_t *p_sys = p_filter->p_sys; p_dst->format.i_x_offset = p_src->format.i_x_offset; p_dst->format.i_y_offset = p_src->format.i_y_offset; const size_t pitches[] = GET_PITCHES( p_src ); const uint8_t *planes[] = GET_PLANES( p_src ); Copy420_P_to_SP( p_dst, planes, pitches, p_src->format.i_y_offset + p_src->format.i_visible_height, &p_sys->cache ); } /***************************************************************************** * planar YV12 4:2:0 Y:V:U to planar NV12 4:2:0 Y:UV *****************************************************************************/ static void YV12_NV12( filter_t *p_filter, picture_t *p_src, picture_t *p_dst ) { picture_SwapUV( p_src ); I420_NV12( p_filter, p_src, p_dst ); } static void NV12_I420( filter_t *p_filter, picture_t *p_src, picture_t *p_dst ) { filter_sys_t *p_sys = p_filter->p_sys; p_dst->format.i_x_offset = p_src->format.i_x_offset; p_dst->format.i_y_offset = p_src->format.i_y_offset; const size_t pitches[] = GET_PITCHES( p_src ); const uint8_t *planes[] = GET_PLANES( p_src ); Copy420_SP_to_P( p_dst, planes, pitches, p_src->format.i_y_offset + p_src->format.i_visible_height, &p_sys->cache ); } static void NV12_YV12( filter_t *p_filter, picture_t *p_src, picture_t *p_dst ) { NV12_I420( p_filter, p_src, p_dst ); picture_SwapUV( p_dst ); } static void I42010B_P010( filter_t *p_filter, picture_t *p_src, picture_t *p_dst ) { filter_sys_t *p_sys = p_filter->p_sys; p_dst->format.i_x_offset = p_src->format.i_x_offset; p_dst->format.i_y_offset = p_src->format.i_y_offset; const size_t pitches[] = GET_PITCHES( p_src ); const uint8_t *planes[] = GET_PLANES( p_src ); Copy420_16_P_to_SP( p_dst, planes, pitches, p_src->format.i_y_offset + p_src->format.i_visible_height, -6, &p_sys->cache ); } static void P010_I42010B( filter_t *p_filter, picture_t *p_src, picture_t *p_dst ) { filter_sys_t *p_sys = p_filter->p_sys; p_dst->format.i_x_offset = p_src->format.i_x_offset; p_dst->format.i_y_offset = p_src->format.i_y_offset; const size_t pitches[] = GET_PITCHES( p_src ); const uint8_t *planes[] = GET_PLANES( p_src ); Copy420_16_SP_to_P( p_dst, planes, pitches, p_src->format.i_y_offset + p_src->format.i_visible_height, 6, &p_sys->cache ); } /* Following functions are local */ VIDEO_FILTER_WRAPPER( I420_NV12 ) VIDEO_FILTER_WRAPPER( YV12_NV12 ) VIDEO_FILTER_WRAPPER( NV12_I420 ) VIDEO_FILTER_WRAPPER( NV12_YV12 ) VIDEO_FILTER_WRAPPER( I42010B_P010 ) VIDEO_FILTER_WRAPPER( P010_I42010B ) /***************************************************************************** * Create: allocate a chroma function ***************************************************************************** * This function allocates and initializes a chroma function *****************************************************************************/ static int Create( vlc_object_t *p_this ) { filter_t *p_filter = (filter_t *)p_this; /* video must be even, because 4:2:0 is subsampled by 2 in both ways */ if( p_filter->fmt_in.video.i_width & 1 || p_filter->fmt_in.video.i_height & 1 ) return -1; /* resizing not supported */ if( p_filter->fmt_in.video.i_x_offset + p_filter->fmt_in.video.i_visible_width != p_filter->fmt_out.video.i_x_offset + p_filter->fmt_out.video.i_visible_width || p_filter->fmt_in.video.i_y_offset + p_filter->fmt_in.video.i_visible_height != p_filter->fmt_out.video.i_y_offset + p_filter->fmt_out.video.i_visible_height || p_filter->fmt_in.video.orientation != p_filter->fmt_out.video.orientation ) return -1; vlc_fourcc_t infcc = p_filter->fmt_in.video.i_chroma; vlc_fourcc_t outfcc = p_filter->fmt_out.video.i_chroma; uint8_t pixel_bytes = 1; switch( infcc ) { case VLC_CODEC_I420: case VLC_CODEC_J420: if( outfcc != VLC_CODEC_NV12 ) return -1; p_filter->pf_video_filter = I420_NV12_Filter; break; case VLC_CODEC_YV12: if( outfcc != VLC_CODEC_NV12 ) return -1; p_filter->pf_video_filter = YV12_NV12_Filter; break; case VLC_CODEC_NV12: switch( outfcc ) { case VLC_CODEC_I420: case VLC_CODEC_J420: p_filter->pf_video_filter = NV12_I420_Filter; break; case VLC_CODEC_YV12: p_filter->pf_video_filter = NV12_YV12_Filter; break; default: return -1; } break; case VLC_CODEC_I420_10L: if( outfcc != VLC_CODEC_P010 ) return -1; pixel_bytes = 2; p_filter->pf_video_filter = I42010B_P010_Filter; break; case VLC_CODEC_P010: if( outfcc != VLC_CODEC_I420_10L ) return -1; pixel_bytes = 2; p_filter->pf_video_filter = P010_I42010B_Filter; break; default: return -1; } filter_sys_t *p_sys = vlc_obj_malloc( VLC_OBJECT( p_filter ), sizeof(*p_sys) ); if (!p_sys) return VLC_ENOMEM; if( CopyInitCache( &p_sys->cache, ( p_filter->fmt_in.video.i_x_offset + p_filter->fmt_in.video.i_visible_width ) * pixel_bytes ) ) return VLC_ENOMEM; p_filter->p_sys = p_sys; return 0; } static void Delete(vlc_object_t *p_this) { filter_t *p_filter = (filter_t *)p_this; filter_sys_t *p_sys = p_filter->p_sys; CopyCleanCache( &p_sys->cache ); } /***************************************************************************** * Module descriptor *****************************************************************************/ vlc_module_begin () set_description( N_("YUV planar to semiplanar conversions") ) set_capability( "video converter", 160 ) set_callbacks( Create, Delete ) vlc_module_end ()