mirror of
https://code.videolan.org/videolan/vlc
synced 2024-07-25 09:41:30 +02:00
651 lines
21 KiB
C
651 lines
21 KiB
C
/*****************************************************************************
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* swscale.c: scaling and chroma conversion using libswscale
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*****************************************************************************
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* Copyright (C) 1999-2008 the VideoLAN team
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* $Id$
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*
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* Authors: Laurent Aimar <fenrir@via.ecp.fr>
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* Gildas Bazin <gbazin@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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
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*****************************************************************************/
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/*****************************************************************************
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* Preamble
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*****************************************************************************/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <assert.h>
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#include <vlc_common.h>
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#include <vlc_plugin.h>
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#include <vlc_filter.h>
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#include <vlc_cpu.h>
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#include <libswscale/swscale.h>
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#include "../codec/avcodec/chroma.h" // Chroma Avutil <-> VLC conversion
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/* Gruikkkkkkkkkk!!!!! */
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#undef AVPALETTE_SIZE
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#define AVPALETTE_SIZE (256 * sizeof(uint32_t))
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/*****************************************************************************
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* Module descriptor
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*****************************************************************************/
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static int OpenScaler( vlc_object_t * );
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static void CloseScaler( vlc_object_t * );
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#define SCALEMODE_TEXT N_("Scaling mode")
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#define SCALEMODE_LONGTEXT N_("Scaling mode to use.")
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static const int pi_mode_values[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
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const char *const ppsz_mode_descriptions[] =
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{ N_("Fast bilinear"), N_("Bilinear"), N_("Bicubic (good quality)"),
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N_("Experimental"), N_("Nearest neighbour (bad quality)"),
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N_("Area"), N_("Luma bicubic / chroma bilinear"), N_("Gauss"),
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N_("SincR"), N_("Lanczos"), N_("Bicubic spline") };
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vlc_module_begin ()
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set_description( N_("Video scaling filter") )
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set_shortname( N_("Swscale" ) )
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set_capability( "video filter2", 150 )
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set_category( CAT_VIDEO )
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set_subcategory( SUBCAT_VIDEO_VFILTER )
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set_callbacks( OpenScaler, CloseScaler )
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add_integer( "swscale-mode", 2, SCALEMODE_TEXT, SCALEMODE_LONGTEXT, true )
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change_integer_list( pi_mode_values, ppsz_mode_descriptions )
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vlc_module_end ()
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/* Version checking */
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#if LIBSWSCALE_VERSION_INT >= ((0<<16)+(5<<8)+0)
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/****************************************************************************
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* Local prototypes
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****************************************************************************/
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void *( *swscale_fast_memcpy )( void *, const void *, size_t );
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/**
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* Internal swscale filter structure.
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*/
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struct filter_sys_t
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{
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SwsFilter *p_src_filter;
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SwsFilter *p_dst_filter;
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int i_cpu_mask, i_sws_flags;
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video_format_t fmt_in;
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video_format_t fmt_out;
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struct SwsContext *ctx;
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struct SwsContext *ctxA;
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picture_t *p_src_a;
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picture_t *p_dst_a;
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int i_extend_factor;
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picture_t *p_src_e;
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picture_t *p_dst_e;
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bool b_add_a;
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bool b_copy;
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bool b_swap_uvi;
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bool b_swap_uvo;
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};
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static picture_t *Filter( filter_t *, picture_t * );
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static int Init( filter_t * );
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static void Clean( filter_t * );
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typedef struct
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{
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int i_fmti;
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int i_fmto;
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bool b_has_a;
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bool b_add_a;
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int i_sws_flags;
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bool b_copy;
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bool b_swap_uvi;
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bool b_swap_uvo;
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} ScalerConfiguration;
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static int GetParameters( ScalerConfiguration *,
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const video_format_t *p_fmti,
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const video_format_t *p_fmto,
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int i_sws_flags_default );
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static int GetSwsCpuMask(void);
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/* SwScaler point resize quality seems really bad, let our scale module do it
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* (change it to true to try) */
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#define ALLOW_YUVP (false)
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/* SwScaler does not like too small picture */
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#define MINIMUM_WIDTH (32)
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/* XXX is it always 3 even for BIG_ENDIAN (blend.c seems to think so) ? */
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#define OFFSET_A (3)
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/*****************************************************************************
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* OpenScaler: probe the filter and return score
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*****************************************************************************/
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static int OpenScaler( vlc_object_t *p_this )
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{
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filter_t *p_filter = (filter_t*)p_this;
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filter_sys_t *p_sys;
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int i_sws_mode;
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if( GetParameters( NULL,
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&p_filter->fmt_in.video,
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&p_filter->fmt_out.video, 0 ) )
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return VLC_EGENERIC;
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/* */
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p_filter->pf_video_filter = Filter;
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/* Allocate the memory needed to store the decoder's structure */
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if( ( p_filter->p_sys = p_sys = malloc(sizeof(filter_sys_t)) ) == NULL )
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return VLC_ENOMEM;
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/* FIXME pointer assignment may not be atomic */
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swscale_fast_memcpy = vlc_memcpy;
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/* Set CPU capabilities */
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p_sys->i_cpu_mask = GetSwsCpuMask();
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/* */
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i_sws_mode = var_CreateGetInteger( p_filter, "swscale-mode" );
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switch( i_sws_mode )
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{
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case 0: p_sys->i_sws_flags = SWS_FAST_BILINEAR; break;
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case 1: p_sys->i_sws_flags = SWS_BILINEAR; break;
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case 2: p_sys->i_sws_flags = SWS_BICUBIC; break;
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case 3: p_sys->i_sws_flags = SWS_X; break;
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case 4: p_sys->i_sws_flags = SWS_POINT; break;
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case 5: p_sys->i_sws_flags = SWS_AREA; break;
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case 6: p_sys->i_sws_flags = SWS_BICUBLIN; break;
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case 7: p_sys->i_sws_flags = SWS_GAUSS; break;
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case 8: p_sys->i_sws_flags = SWS_SINC; break;
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case 9: p_sys->i_sws_flags = SWS_LANCZOS; break;
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case 10: p_sys->i_sws_flags = SWS_SPLINE; break;
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default: p_sys->i_sws_flags = SWS_BICUBIC; i_sws_mode = 2; break;
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}
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p_sys->p_src_filter = NULL;
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p_sys->p_dst_filter = NULL;
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/* Misc init */
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p_sys->ctx = NULL;
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p_sys->ctxA = NULL;
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p_sys->p_src_a = NULL;
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p_sys->p_dst_a = NULL;
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p_sys->p_src_e = NULL;
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p_sys->p_dst_e = NULL;
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memset( &p_sys->fmt_in, 0, sizeof(p_sys->fmt_in) );
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memset( &p_sys->fmt_out, 0, sizeof(p_sys->fmt_out) );
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if( Init( p_filter ) )
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{
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if( p_sys->p_src_filter )
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sws_freeFilter( p_sys->p_src_filter );
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free( p_sys );
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return VLC_EGENERIC;
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}
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msg_Dbg( p_filter, "%ix%i chroma: %4.4s -> %ix%i chroma: %4.4s with scaling using %s",
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p_filter->fmt_in.video.i_width, p_filter->fmt_in.video.i_height,
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(char *)&p_filter->fmt_in.video.i_chroma,
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p_filter->fmt_out.video.i_width, p_filter->fmt_out.video.i_height,
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(char *)&p_filter->fmt_out.video.i_chroma,
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ppsz_mode_descriptions[i_sws_mode] );
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return VLC_SUCCESS;
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}
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/*****************************************************************************
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* CloseFilter: clean up the filter
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*****************************************************************************/
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static void CloseScaler( vlc_object_t *p_this )
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{
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filter_t *p_filter = (filter_t*)p_this;
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filter_sys_t *p_sys = p_filter->p_sys;
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Clean( p_filter );
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if( p_sys->p_src_filter )
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sws_freeFilter( p_sys->p_src_filter );
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free( p_sys );
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}
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/*****************************************************************************
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* Helpers
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*****************************************************************************/
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static int GetSwsCpuMask(void)
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{
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const unsigned int i_cpu = vlc_CPU();
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int i_sws_cpu = 0;
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if( i_cpu & CPU_CAPABILITY_MMX )
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i_sws_cpu |= SWS_CPU_CAPS_MMX;
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#if (LIBSWSCALE_VERSION_INT >= ((0<<16)+(5<<8)+0))
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if( i_cpu & CPU_CAPABILITY_MMXEXT )
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i_sws_cpu |= SWS_CPU_CAPS_MMX2;
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#endif
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if( i_cpu & CPU_CAPABILITY_3DNOW )
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i_sws_cpu |= SWS_CPU_CAPS_3DNOW;
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if( i_cpu & CPU_CAPABILITY_ALTIVEC )
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i_sws_cpu |= SWS_CPU_CAPS_ALTIVEC;
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return i_sws_cpu;
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}
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static bool IsFmtSimilar( const video_format_t *p_fmt1, const video_format_t *p_fmt2 )
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{
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return p_fmt1->i_chroma == p_fmt2->i_chroma &&
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p_fmt1->i_width == p_fmt2->i_width &&
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p_fmt1->i_height == p_fmt2->i_height;
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}
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static void FixParameters( int *pi_fmt, bool *pb_has_a, bool *pb_swap_uv, vlc_fourcc_t fmt )
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{
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switch( fmt )
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{
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case VLC_CODEC_YUVA:
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*pi_fmt = PIX_FMT_YUV444P;
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*pb_has_a = true;
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break;
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case VLC_CODEC_RGBA:
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*pi_fmt = PIX_FMT_BGR32;
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*pb_has_a = true;
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break;
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case VLC_CODEC_YV12:
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*pi_fmt = PIX_FMT_YUV420P;
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*pb_swap_uv = true;
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break;
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case VLC_CODEC_YV9:
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*pi_fmt = PIX_FMT_YUV410P;
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*pb_swap_uv = true;
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break;
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default:
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break;
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}
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}
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static int GetParameters( ScalerConfiguration *p_cfg,
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const video_format_t *p_fmti,
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const video_format_t *p_fmto,
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int i_sws_flags_default )
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{
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int i_fmti = -1;
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int i_fmto = -1;
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bool b_has_ai = false;
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bool b_has_ao = false;
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int i_sws_flags = i_sws_flags_default;
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bool b_swap_uvi = false;
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bool b_swap_uvo = false;
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GetFfmpegChroma( &i_fmti, *p_fmti );
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GetFfmpegChroma( &i_fmto, *p_fmto );
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if( p_fmti->i_chroma == p_fmto->i_chroma )
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{
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if( p_fmti->i_chroma == VLC_CODEC_YUVP && ALLOW_YUVP )
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{
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i_fmti = i_fmto = PIX_FMT_GRAY8;
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i_sws_flags = SWS_POINT;
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}
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}
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FixParameters( &i_fmti, &b_has_ai, &b_swap_uvi, p_fmti->i_chroma );
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FixParameters( &i_fmto, &b_has_ao, &b_swap_uvo, p_fmto->i_chroma );
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/* FIXME TODO removed when ffmpeg is fixed
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* Without SWS_ACCURATE_RND the quality is really bad for some conversions */
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switch( i_fmto )
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{
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case PIX_FMT_ARGB:
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case PIX_FMT_RGBA:
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case PIX_FMT_ABGR:
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i_sws_flags |= SWS_ACCURATE_RND;
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break;
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}
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if( p_cfg )
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{
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p_cfg->i_fmti = i_fmti;
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p_cfg->i_fmto = i_fmto;
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p_cfg->b_has_a = b_has_ai && b_has_ao;
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p_cfg->b_add_a = (!b_has_ai) && b_has_ao;
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p_cfg->b_copy = i_fmti == i_fmto &&
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p_fmti->i_width == p_fmto->i_width &&
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p_fmti->i_height == p_fmto->i_height;
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p_cfg->b_swap_uvi = b_swap_uvi;
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p_cfg->b_swap_uvo = b_swap_uvo;
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p_cfg->i_sws_flags = i_sws_flags;
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}
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if( i_fmti < 0 || i_fmto < 0 )
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return VLC_EGENERIC;
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return VLC_SUCCESS;
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}
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static int Init( filter_t *p_filter )
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{
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filter_sys_t *p_sys = p_filter->p_sys;
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const video_format_t *p_fmti = &p_filter->fmt_in.video;
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video_format_t *p_fmto = &p_filter->fmt_out.video;
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if( IsFmtSimilar( p_fmti, &p_sys->fmt_in ) &&
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IsFmtSimilar( p_fmto, &p_sys->fmt_out ) &&
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p_sys->ctx )
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{
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return VLC_SUCCESS;
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}
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Clean( p_filter );
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/* Init with new parameters */
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ScalerConfiguration cfg;
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if( GetParameters( &cfg, p_fmti, p_fmto, p_sys->i_sws_flags ) )
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{
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msg_Err( p_filter, "format not supported" );
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return VLC_EGENERIC;
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}
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if( p_fmti->i_width <= 0 || p_fmto->i_width <= 0 )
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{
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msg_Err( p_filter, "0 width not supported" );
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return VLC_EGENERIC;
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}
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/* swscale does not like too small width */
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p_sys->i_extend_factor = 1;
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while( __MIN( p_fmti->i_width, p_fmto->i_width ) * p_sys->i_extend_factor < MINIMUM_WIDTH)
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p_sys->i_extend_factor++;
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const unsigned i_fmti_width = p_fmti->i_width * p_sys->i_extend_factor;
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const unsigned i_fmto_width = p_fmto->i_width * p_sys->i_extend_factor;
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for( int n = 0; n < (cfg.b_has_a ? 2 : 1); n++ )
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{
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const int i_fmti = n == 0 ? cfg.i_fmti : PIX_FMT_GRAY8;
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const int i_fmto = n == 0 ? cfg.i_fmto : PIX_FMT_GRAY8;
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struct SwsContext *ctx;
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ctx = sws_getContext( i_fmti_width, p_fmti->i_height, i_fmti,
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i_fmto_width, p_fmto->i_height, i_fmto,
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cfg.i_sws_flags | p_sys->i_cpu_mask,
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p_sys->p_src_filter, p_sys->p_dst_filter, 0 );
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if( n == 0 )
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p_sys->ctx = ctx;
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else
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p_sys->ctxA = ctx;
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}
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if( p_sys->ctxA )
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{
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p_sys->p_src_a = picture_New( VLC_CODEC_GREY, i_fmti_width, p_fmti->i_height, 0, 1 );
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p_sys->p_dst_a = picture_New( VLC_CODEC_GREY, i_fmto_width, p_fmto->i_height, 0, 1 );
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}
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if( p_sys->i_extend_factor != 1 )
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{
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p_sys->p_src_e = picture_New( p_fmti->i_chroma, i_fmti_width, p_fmti->i_height, 0, 1 );
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p_sys->p_dst_e = picture_New( p_fmto->i_chroma, i_fmto_width, p_fmto->i_height, 0, 1 );
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if( p_sys->p_src_e )
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memset( p_sys->p_src_e->p[0].p_pixels, 0, p_sys->p_src_e->p[0].i_pitch * p_sys->p_src_e->p[0].i_lines );
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if( p_sys->p_dst_e )
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memset( p_sys->p_dst_e->p[0].p_pixels, 0, p_sys->p_dst_e->p[0].i_pitch * p_sys->p_dst_e->p[0].i_lines );
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}
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if( !p_sys->ctx ||
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( cfg.b_has_a && ( !p_sys->ctxA || !p_sys->p_src_a || !p_sys->p_dst_a ) ) ||
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( p_sys->i_extend_factor != 1 && ( !p_sys->p_src_e || !p_sys->p_dst_e ) ) )
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{
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msg_Err( p_filter, "could not init SwScaler and/or allocate memory" );
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Clean( p_filter );
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return VLC_EGENERIC;
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}
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p_sys->b_add_a = cfg.b_add_a;
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p_sys->b_copy = cfg.b_copy;
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p_sys->fmt_in = *p_fmti;
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p_sys->fmt_out = *p_fmto;
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p_sys->b_swap_uvi = cfg.b_swap_uvi;
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p_sys->b_swap_uvo = cfg.b_swap_uvo;
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video_format_ScaleCropAr( p_fmto, p_fmti );
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#if 0
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msg_Dbg( p_filter, "%ix%i chroma: %4.4s -> %ix%i chroma: %4.4s extend by %d",
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p_fmti->i_width, p_fmti->i_height, (char *)&p_fmti->i_chroma,
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p_fmto->i_width, p_fmto->i_height, (char *)&p_fmto->i_chroma,
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p_sys->i_extend_factor );
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#endif
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return VLC_SUCCESS;
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}
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static void Clean( filter_t *p_filter )
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{
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filter_sys_t *p_sys = p_filter->p_sys;
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if( p_sys->p_src_e )
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picture_Release( p_sys->p_src_e );
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if( p_sys->p_dst_e )
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picture_Release( p_sys->p_dst_e );
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if( p_sys->p_src_a )
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picture_Release( p_sys->p_src_a );
|
|
if( p_sys->p_dst_a )
|
|
picture_Release( p_sys->p_dst_a );
|
|
|
|
if( p_sys->ctxA )
|
|
sws_freeContext( p_sys->ctxA );
|
|
|
|
if( p_sys->ctx )
|
|
sws_freeContext( p_sys->ctx );
|
|
|
|
/* We have to set it to null has we call be called again :( */
|
|
p_sys->ctx = NULL;
|
|
p_sys->ctxA = NULL;
|
|
p_sys->p_src_a = NULL;
|
|
p_sys->p_dst_a = NULL;
|
|
p_sys->p_src_e = NULL;
|
|
p_sys->p_dst_e = NULL;
|
|
}
|
|
|
|
static void GetPixels( uint8_t *pp_pixel[4], int pi_pitch[4],
|
|
const picture_t *p_picture,
|
|
int i_plane_start, int i_plane_count,
|
|
bool b_swap_uv )
|
|
{
|
|
assert( !b_swap_uv || i_plane_count >= 3 );
|
|
int n;
|
|
for( n = 0; n < __MIN(i_plane_count, p_picture->i_planes-i_plane_start ); n++ )
|
|
{
|
|
const int nd = ( b_swap_uv && n >= 1 && n <= 2 ) ? (3 - n) : n;
|
|
pp_pixel[nd] = p_picture->p[i_plane_start+n].p_pixels;
|
|
pi_pitch[nd] = p_picture->p[i_plane_start+n].i_pitch;
|
|
}
|
|
for( ; n < 4; n++ )
|
|
{
|
|
pp_pixel[n] = NULL;
|
|
pi_pitch[n] = 0;
|
|
}
|
|
}
|
|
|
|
static void ExtractA( picture_t *p_dst, const picture_t *p_src, unsigned i_width, unsigned i_height )
|
|
{
|
|
plane_t *d = &p_dst->p[0];
|
|
const plane_t *s = &p_src->p[0];
|
|
|
|
for( unsigned y = 0; y < i_height; y++ )
|
|
for( unsigned x = 0; x < i_width; x++ )
|
|
d->p_pixels[y*d->i_pitch+x] = s->p_pixels[y*s->i_pitch+4*x+OFFSET_A];
|
|
}
|
|
static void InjectA( picture_t *p_dst, const picture_t *p_src, unsigned i_width, unsigned i_height )
|
|
{
|
|
plane_t *d = &p_dst->p[0];
|
|
const plane_t *s = &p_src->p[0];
|
|
|
|
for( unsigned y = 0; y < i_height; y++ )
|
|
for( unsigned x = 0; x < i_width; x++ )
|
|
d->p_pixels[y*d->i_pitch+4*x+OFFSET_A] = s->p_pixels[y*s->i_pitch+x];
|
|
}
|
|
static void FillA( plane_t *d, int i_offset )
|
|
{
|
|
for( int y = 0; y < d->i_visible_lines; y++ )
|
|
for( int x = 0; x < d->i_visible_pitch; x += d->i_pixel_pitch )
|
|
d->p_pixels[y*d->i_pitch+x+i_offset] = 0xff;
|
|
}
|
|
|
|
static void CopyPad( picture_t *p_dst, const picture_t *p_src )
|
|
{
|
|
picture_Copy( p_dst, p_src );
|
|
for( int n = 0; n < p_dst->i_planes; n++ )
|
|
{
|
|
const plane_t *s = &p_src->p[n];
|
|
plane_t *d = &p_dst->p[n];
|
|
|
|
for( int y = 0; y < s->i_lines; y++ )
|
|
{
|
|
for( int x = s->i_visible_pitch; x < d->i_visible_pitch; x += s->i_pixel_pitch )
|
|
memcpy( &d->p_pixels[y*d->i_pitch + x], &d->p_pixels[y*d->i_pitch + s->i_visible_pitch - s->i_pixel_pitch], s->i_pixel_pitch );
|
|
}
|
|
}
|
|
}
|
|
|
|
static void SwapUV( picture_t *p_dst, const picture_t *p_src )
|
|
{
|
|
picture_t tmp = *p_src;
|
|
tmp.p[1] = p_src->p[2];
|
|
tmp.p[2] = p_src->p[1];
|
|
|
|
picture_CopyPixels( p_dst, &tmp );
|
|
}
|
|
static void Convert( filter_t *p_filter, struct SwsContext *ctx,
|
|
picture_t *p_dst, picture_t *p_src, int i_height, int i_plane_start, int i_plane_count,
|
|
bool b_swap_uvi, bool b_swap_uvo )
|
|
{
|
|
uint8_t palette[AVPALETTE_SIZE];
|
|
|
|
uint8_t *src[4]; int src_stride[4];
|
|
uint8_t *dst[4]; int dst_stride[4];
|
|
|
|
GetPixels( src, src_stride, p_src, i_plane_start, i_plane_count, b_swap_uvi );
|
|
if( p_filter->fmt_in.video.i_chroma == VLC_CODEC_RGBP )
|
|
{
|
|
memset( palette, 0, sizeof(palette) );
|
|
if( p_filter->fmt_in.video.p_palette )
|
|
memcpy( palette, p_filter->fmt_in.video.p_palette->palette,
|
|
__MIN( sizeof(video_palette_t), AVPALETTE_SIZE ) );
|
|
src[1] = palette;
|
|
src_stride[1] = 4;
|
|
}
|
|
|
|
GetPixels( dst, dst_stride, p_dst, i_plane_start, i_plane_count, b_swap_uvo );
|
|
|
|
#if LIBSWSCALE_VERSION_INT >= ((0<<16)+(5<<8)+0)
|
|
sws_scale( ctx, src, src_stride, 0, i_height,
|
|
dst, dst_stride );
|
|
#else
|
|
sws_scale_ordered( ctx, src, src_stride, 0, i_height,
|
|
dst, dst_stride );
|
|
#endif
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Filter: the whole thing
|
|
****************************************************************************
|
|
* This function is called just after the thread is launched.
|
|
****************************************************************************/
|
|
static picture_t *Filter( filter_t *p_filter, picture_t *p_pic )
|
|
{
|
|
filter_sys_t *p_sys = p_filter->p_sys;
|
|
const video_format_t *p_fmti = &p_filter->fmt_in.video;
|
|
const video_format_t *p_fmto = &p_filter->fmt_out.video;
|
|
picture_t *p_pic_dst;
|
|
|
|
/* Check if format properties changed */
|
|
if( Init( p_filter ) )
|
|
{
|
|
picture_Release( p_pic );
|
|
return NULL;
|
|
}
|
|
|
|
/* Request output picture */
|
|
p_pic_dst = filter_NewPicture( p_filter );
|
|
if( !p_pic_dst )
|
|
{
|
|
picture_Release( p_pic );
|
|
return NULL;
|
|
}
|
|
|
|
/* */
|
|
picture_t *p_src = p_pic;
|
|
picture_t *p_dst = p_pic_dst;
|
|
if( p_sys->i_extend_factor != 1 )
|
|
{
|
|
p_src = p_sys->p_src_e;
|
|
p_dst = p_sys->p_dst_e;
|
|
|
|
CopyPad( p_src, p_pic );
|
|
}
|
|
|
|
if( p_sys->b_copy && p_sys->b_swap_uvi == p_sys->b_swap_uvo )
|
|
picture_CopyPixels( p_dst, p_src );
|
|
else if( p_sys->b_copy )
|
|
SwapUV( p_dst, p_src );
|
|
else
|
|
Convert( p_filter, p_sys->ctx, p_dst, p_src, p_fmti->i_height, 0, 3,
|
|
p_sys->b_swap_uvi, p_sys->b_swap_uvo );
|
|
if( p_sys->ctxA )
|
|
{
|
|
/* We extract the A plane to rescale it, and then we reinject it. */
|
|
if( p_fmti->i_chroma == VLC_CODEC_RGBA )
|
|
ExtractA( p_sys->p_src_a, p_src, p_fmti->i_width * p_sys->i_extend_factor, p_fmti->i_height );
|
|
else
|
|
plane_CopyPixels( p_sys->p_src_a->p, p_src->p+A_PLANE );
|
|
|
|
Convert( p_filter, p_sys->ctxA, p_sys->p_dst_a, p_sys->p_src_a, p_fmti->i_height, 0, 1, false, false );
|
|
if( p_fmto->i_chroma == VLC_CODEC_RGBA )
|
|
InjectA( p_dst, p_sys->p_dst_a, p_fmto->i_width * p_sys->i_extend_factor, p_fmto->i_height );
|
|
else
|
|
plane_CopyPixels( p_dst->p+A_PLANE, p_sys->p_dst_a->p );
|
|
}
|
|
else if( p_sys->b_add_a )
|
|
{
|
|
/* We inject a complete opaque alpha plane */
|
|
if( p_fmto->i_chroma == VLC_CODEC_RGBA )
|
|
FillA( &p_dst->p[0], OFFSET_A );
|
|
else
|
|
FillA( &p_dst->p[A_PLANE], 0 );
|
|
}
|
|
|
|
if( p_sys->i_extend_factor != 1 )
|
|
{
|
|
picture_CopyPixels( p_pic_dst, p_dst );
|
|
}
|
|
|
|
picture_CopyProperties( p_pic_dst, p_pic );
|
|
picture_Release( p_pic );
|
|
return p_pic_dst;
|
|
}
|
|
|
|
#else /* LIBSWSCALE_VERSION_INT >= ((0<<16)+(5<<8)+0) */
|
|
|
|
int OpenScaler( vlc_object_t *p_this )
|
|
{
|
|
return VLC_EGENERIC;
|
|
}
|
|
|
|
void CloseScaler( vlc_object_t *p_this )
|
|
{
|
|
}
|
|
|
|
#endif /* LIBSWSCALE_VERSION_INT >= ((0<<16)+(5<<8)+0) */
|