decoder.c
资源名称:vlc-1.0.5.zip [点击查看]
上传用户:kjfoods
上传日期:2020-07-06
资源大小:29949k
文件大小:4k
源码类别:
midi
开发平台:
Unix_Linux
- /*****************************************************************************
- * decoder.c: stats decoder plugin for vlc.
- *****************************************************************************
- * Copyright (C) 2002-2008 the VideoLAN team
- *
- * Authors: Samuel Hocevar <sam@zoy.org>
- * Pierre d'Herbemont <pdherbemont@videolan.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
- *****************************************************************************/
- #ifdef HAVE_CONFIG_H
- # include "config.h"
- #endif
- #include <vlc_common.h>
- #include <vlc_codec.h>
- #include <vlc_vout.h>
- #include "stats.h"
- /*****************************************************************************
- * Local prototypes
- *****************************************************************************/
- static picture_t *DecodeBlock( decoder_t *p_dec, block_t **pp_block );
- /*****************************************************************************
- * OpenDecoder: Open the decoder
- *****************************************************************************/
- int OpenDecoder ( vlc_object_t *p_this )
- {
- decoder_t *p_dec = (decoder_t*)p_this;
- msg_Dbg( p_this, "opening stats decoder" );
- /* Set callbacks */
- p_dec->pf_decode_video = DecodeBlock;
- p_dec->pf_decode_audio = NULL;
- p_dec->pf_decode_sub = NULL;
- /* */
- es_format_Init( &p_dec->fmt_out, VIDEO_ES, VLC_FOURCC('I','4','2','0') );
- p_dec->fmt_out.video.i_width = 100;
- p_dec->fmt_out.video.i_height = 100;
- p_dec->fmt_out.video.i_aspect = VOUT_ASPECT_FACTOR;
- return VLC_SUCCESS;
- }
- /****************************************************************************
- * RunDecoder: the whole thing
- ****************************************************************************/
- static picture_t *DecodeBlock( decoder_t *p_dec, block_t **pp_block )
- {
- block_t *p_block;
- picture_t * p_pic = NULL;
- if( !pp_block || !*pp_block ) return NULL;
- p_block = *pp_block;
- p_pic = decoder_NewPicture( p_dec );
- if( p_block->i_buffer == kBufferSize )
- {
- msg_Dbg( p_dec, "got %"PRIu64" ms",
- *(mtime_t *)p_block->p_buffer / 1000 );
- msg_Dbg( p_dec, "got %"PRIu64" ms offset",
- (mdate() - *(mtime_t *)p_block->p_buffer) / 1000 );
- *(mtime_t *)(p_pic->p->p_pixels) = *(mtime_t *)p_block->p_buffer;
- }
- else
- {
- msg_Dbg( p_dec, "got a packet not from stats demuxer" );
- *(mtime_t *)(p_pic->p->p_pixels) = mdate();
- }
- p_pic->date = p_block->i_pts ? p_block->i_pts : p_block->i_dts;
- p_pic->b_force = true;
- block_Release( p_block );
- *pp_block = NULL;
- return p_pic;
- }
- /*****************************************************************************
- * CloseDecoder: decoder destruction
- *****************************************************************************/
- void CloseDecoder ( vlc_object_t *p_this )
- {
- msg_Dbg( p_this, "closing stats decoder" );
- }