postprocess.c
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上传日期:2009-03-27
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- /*****************************************************************************
- * postprocess.c: video postprocessing using the ffmpeg library
- *****************************************************************************
- * Copyright (C) 1999-2001 VideoLAN
- * $Id: postprocess.c 8931 2004-10-06 13:07:35Z gbazin $
- *
- * Authors: Laurent Aimar <fenrir@via.ecp.fr>
- * Gildas Bazin <gbazin@netcourrier.com>
- *
- * 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.
- *****************************************************************************/
- #include <vlc/vlc.h>
- #include <vlc/vout.h>
- #include <vlc/decoder.h>
- /* ffmpeg header */
- #ifdef HAVE_FFMPEG_AVCODEC_H
- # include <ffmpeg/avcodec.h>
- #else
- # include <avcodec.h>
- #endif
- #include "ffmpeg.h"
- #ifdef LIBAVCODEC_PP
- #ifdef HAVE_POSTPROC_POSTPROCESS_H
- # include <postproc/postprocess.h>
- #else
- # include <libpostproc/postprocess.h>
- #endif
- #ifndef PP_CPU_CAPS_ALTIVEC
- # define PP_CPU_CAPS_ALTIVEC 0
- #endif
- /*****************************************************************************
- * video_postproc_sys_t : ffmpeg video postprocessing descriptor
- *****************************************************************************/
- typedef struct video_postproc_sys_t
- {
- pp_context_t *pp_context;
- pp_mode_t *pp_mode;
- vlc_bool_t *pb_pp;
- int i_width;
- int i_height;
- } video_postproc_sys_t;
- static int PPQCallback( vlc_object_t *p_this, char const *psz_cmd,
- vlc_value_t oldval, vlc_value_t newval, void *p_data );
- /*****************************************************************************
- * OpenPostproc: probe and open the postproc
- *****************************************************************************/
- void *E_(OpenPostproc)( decoder_t *p_dec, vlc_bool_t *pb_pp )
- {
- video_postproc_sys_t *p_sys;
- vlc_value_t val, val_orig, text;
- p_sys = malloc( sizeof(video_postproc_sys_t) );
- p_sys->pp_context = NULL;
- p_sys->pp_mode = NULL;
- *pb_pp = VLC_FALSE;
- p_sys->pb_pp = pb_pp;
- /* Create object variable if not already done */
- if( var_Type( p_dec, "ffmpeg-pp-q" ) == 0 )
- {
- var_Create( p_dec, "ffmpeg-pp-q",
- VLC_VAR_INTEGER | VLC_VAR_HASCHOICE | VLC_VAR_DOINHERIT );
- text.psz_string = _("Post processing");
- var_Change( p_dec, "ffmpeg-pp-q", VLC_VAR_SETTEXT, &text, NULL );
- var_Get( p_dec, "ffmpeg-pp-q", &val_orig );
- var_Change( p_dec, "ffmpeg-pp-q", VLC_VAR_DELCHOICE, &val_orig, NULL );
- val.i_int = 0; text.psz_string = _("Disable");
- var_Change( p_dec, "ffmpeg-pp-q", VLC_VAR_ADDCHOICE, &val, &text );
- val.i_int = 1; text.psz_string = _("1 (Lowest)");
- var_Change( p_dec, "ffmpeg-pp-q", VLC_VAR_ADDCHOICE, &val, &text );
- val.i_int = 2;
- var_Change( p_dec, "ffmpeg-pp-q", VLC_VAR_ADDCHOICE, &val, NULL );
- val.i_int = 3;
- var_Change( p_dec, "ffmpeg-pp-q", VLC_VAR_ADDCHOICE, &val, NULL );
- val.i_int = 4;
- var_Change( p_dec, "ffmpeg-pp-q", VLC_VAR_ADDCHOICE, &val, NULL );
- val.i_int = 5;
- var_Change( p_dec, "ffmpeg-pp-q", VLC_VAR_ADDCHOICE, &val, NULL );
- val.i_int = 6; text.psz_string = _("6 (Highest)");
- var_Change( p_dec, "ffmpeg-pp-q", VLC_VAR_ADDCHOICE, &val, &text );
- var_AddCallback( p_dec, "ffmpeg-pp-q", PPQCallback, p_sys );
- }
- /* ***** Load post processing if enabled ***** */
- var_Get( p_dec, "ffmpeg-pp-q", &val );
- var_Set( p_dec, "ffmpeg-pp-q", val_orig );
- return p_sys;
- }
- /*****************************************************************************
- * InitPostproc:
- *****************************************************************************/
- int E_(InitPostproc)( decoder_t *p_dec, void *p_data,
- int i_width, int i_height, int pix_fmt )
- {
- video_postproc_sys_t *p_sys = (video_postproc_sys_t *)p_data;
- int32_t i_cpu = p_dec->p_libvlc->i_cpu;
- int i_flags = 0;
- /* Set CPU capabilities */
- if( i_cpu & CPU_CAPABILITY_MMX )
- {
- i_flags |= PP_CPU_CAPS_MMX;
- }
- if( i_cpu & CPU_CAPABILITY_MMXEXT )
- {
- i_flags |= PP_CPU_CAPS_MMX2;
- }
- if( i_cpu & CPU_CAPABILITY_3DNOW )
- {
- i_flags |= PP_CPU_CAPS_3DNOW;
- }
- if( i_cpu & CPU_CAPABILITY_ALTIVEC )
- {
- i_flags |= PP_CPU_CAPS_ALTIVEC;
- }
- switch( pix_fmt )
- {
- case PIX_FMT_YUV444P:
- i_flags |= PP_FORMAT_444;
- break;
- case PIX_FMT_YUV422P:
- i_flags |= PP_FORMAT_422;
- break;
- case PIX_FMT_YUV411P:
- i_flags |= PP_FORMAT_411;
- break;
- default:
- i_flags |= PP_FORMAT_420;
- break;
- }
- p_sys->pp_context = pp_get_context( i_width, i_height, i_flags );
- p_sys->i_width = i_width;
- p_sys->i_height = i_height;
- return VLC_SUCCESS;
- }
- /*****************************************************************************
- * PostprocPict:
- *****************************************************************************/
- int E_(PostprocPict)( decoder_t *p_dec, void *p_data,
- picture_t *p_pic, AVFrame *p_ff_pic )
- {
- video_postproc_sys_t *p_sys = (video_postproc_sys_t *)p_data;
- uint8_t *src[3], *dst[3];
- int i_plane, i_src_stride[3], i_dst_stride[3];
- for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
- {
- src[i_plane] = p_ff_pic->data[i_plane];
- dst[i_plane] = p_pic->p[i_plane].p_pixels;
- i_src_stride[i_plane] = p_ff_pic->linesize[i_plane];
- i_dst_stride[i_plane] = p_pic->p[i_plane].i_pitch;
- }
- pp_postprocess( src, i_src_stride, dst, i_dst_stride,
- p_sys->i_width, p_sys->i_height,
- p_ff_pic->qscale_table, p_ff_pic->qstride,
- p_sys->pp_mode, p_sys->pp_context,
- p_ff_pic->pict_type );
- return VLC_SUCCESS;
- }
- /*****************************************************************************
- * ClosePostproc:
- *****************************************************************************/
- void E_(ClosePostproc)( decoder_t *p_dec, void *p_data )
- {
- video_postproc_sys_t *p_sys = (video_postproc_sys_t *)p_data;
- if( p_sys && p_sys->pp_mode )
- {
- pp_free_mode( p_sys->pp_mode );
- if( p_sys->pp_context ) pp_free_context( p_sys->pp_context );
- }
- var_DelCallback( p_dec, "ffmpeg-pp-q", PPQCallback, p_sys );
- if( p_sys ) free( p_sys );
- }
- /*****************************************************************************
- * object variables callbacks: a bunch of object variables are used by the
- * interfaces to interact with the decoder.
- *****************************************************************************/
- static int PPQCallback( vlc_object_t *p_this, char const *psz_cmd,
- vlc_value_t oldval, vlc_value_t newval, void *p_data )
- {
- decoder_t *p_dec = (decoder_t *)p_this;
- video_postproc_sys_t *p_sys = (video_postproc_sys_t *)p_data;
- if( newval.i_int > 0 )
- {
- int i_quality = newval.i_int;
- char *psz_name = config_GetPsz( p_dec, "ffmpeg-pp-name" );
- pp_mode_t *pp_mode;
- if( !psz_name )
- {
- psz_name = strdup( "default" );
- }
- else if( *psz_name == ' ' )
- {
- free( psz_name );
- psz_name = strdup( "default" );
- }
- pp_mode = pp_get_mode_by_name_and_quality( psz_name, i_quality );
- if( !pp_mode )
- {
- msg_Err( p_dec, "failed getting mode for postproc" );
- newval.i_int = 0;
- }
- else
- {
- msg_Dbg( p_dec, "postprocessing enabled" );
- }
- free( psz_name );
- p_sys->pp_mode = pp_mode;
- }
- else
- {
- msg_Dbg( p_dec, "postprocessing disabled" );
- }
- *p_sys->pb_pp = newval.i_int;
- return VLC_SUCCESS;
- }
- #endif /* LIBAVCODEC_PP */