videotemplate.c
资源名称:tcpmp.rar [点击查看]
上传用户:wstnjxml
上传日期:2014-04-03
资源大小:7248k
文件大小:3k
源码类别:
Windows CE
开发平台:
C/C++
- /*****************************************************************************
- *
- * 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 02111-1307 USA
- *
- * $Id: videotemplate.c 543 2006-01-07 22:06:24Z picard $
- *
- * The Core Pocket Media Player
- * Copyright (c) 2004-2005 Gabor Kovacs
- *
- ****************************************************************************/
- #include "../common/common.h"
- #include "videotemplate.h"
- typedef struct video_template
- {
- codec Codec;
- nodeget GetInherited;
- nodeset SetInherited;
- int BufferSize;
- int YSize;
- uint8_t* Buffer;
- int Pos;
- } video_template;
- static int UpdateInput( video_template* p )
- {
- free(p->Buffer);
- p->Buffer = NULL;
- if (p->Codec.In.Format.Type == PACKET_VIDEO)
- {
- PacketFormatClear(&p->Codec.Out.Format);
- p->Codec.Out.Format.Type = PACKET_VIDEO;
- p->Codec.Out.Format.Format.Video.Pixel.Flags = PF_FOURCC;
- p->Codec.Out.Format.Format.Video.Pixel.FourCC = FOURCC_I420;
- p->Codec.Out.Format.Format.Video.Width = p->Codec.In.Format.Format.Video.Width;
- p->Codec.Out.Format.Format.Video.Height = p->Codec.In.Format.Format.Video.Height;
- p->Codec.Out.Format.Format.Video.Pitch = p->Codec.In.Format.Format.Video.Width;
- p->YSize = p->Codec.Out.Format.Format.Video.Width*p->Codec.Out.Format.Format.Video.Height;
- p->BufferSize = p->YSize+(p->YSize/2);
- p->Buffer = (uint8_t*) malloc(p->BufferSize);
- if (!p->Buffer)
- return ERR_OUT_OF_MEMORY;
- memset(p->Buffer,128,p->BufferSize);
- memset(p->Buffer,0,p->YSize);
- p->Pos = 0;
- }
- return ERR_NONE;
- }
- static int Process( video_template* p, const packet* Packet, const flowstate* State )
- {
- if (!Packet)
- return ERR_NEED_MORE_DATA;
- if (State->DropLevel)
- return p->Codec.Out.Process(p->Codec.Out.Pin.Node,NULL,State);
- p->Codec.Packet.RefTime = Packet->RefTime;
- p->Codec.Packet.Data[0] = p->Buffer;
- p->Codec.Packet.Length = p->BufferSize;
- // draw one pixel in Y plane
- p->Buffer[p->Pos++ % p->YSize] = 255;
- return ERR_NONE;
- }
- static int Flush( video_template* p )
- {
- memset(p->Buffer,0,p->YSize);
- p->Pos = 0;
- return ERR_NONE;
- }
- static int Create( video_template* p )
- {
- p->Codec.Process = (packetprocess)Process;
- p->Codec.UpdateInput = (nodefunc)UpdateInput;
- p->Codec.Flush = (nodefunc)Flush;
- return ERR_NONE;
- }
- static const nodedef Template =
- {
- sizeof(video_template),
- VIDEO_TEMPLATE_ID,
- CODEC_CLASS,
- PRI_DEFAULT+10, // use higher priorty as defualt MPEG4 codec so this example can override it
- (nodecreate)Create,
- NULL,
- };
- void Video_Init()
- {
- StringAdd(1,VIDEO_TEMPLATE_ID,NODE_NAME,T("Video template codec"));
- StringAdd(1,VIDEO_TEMPLATE_ID,NODE_CONTENTTYPE,T("vcodec/dx50,vcodec/xvid"));
- NodeRegisterClass(&Template);
- }
- void Video_Done()
- {
- NodeUnRegisterClass(VIDEO_TEMPLATE_ID);
- }