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Annotation of margi2/video.h, revision 1.1.1.1

1.1       cvs         1: /* 
                      2:     video.h
                      3: 
                      4:     Copyright (C) Christian Wolff for convergence integrated media.
                      5: 
                      6:     This program is free software; you can redistribute it and/or modify
                      7:     it under the terms of the GNU General Public License as published by
                      8:     the Free Software Foundation; either version 2 of the License, or
                      9:     (at your option) any later version.
                     10: 
                     11:     This program is distributed in the hope that it will be useful,
                     12:     but WITHOUT ANY WARRANTY; without even the implied warranty of
                     13:     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     14:     GNU General Public License for more details.
                     15: 
                     16:     You should have received a copy of the GNU General Public License
                     17:     along with this program; if not, write to the Free Software
                     18:     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
                     19: */
                     20: 
                     21: #ifndef CVDV_VIDEO_H
                     22: #define CVDV_VIDEO_H
                     23: 
                     24:   //
                     25:  //  Video Decoder
                     26: //
                     27: 
                     28: #include "cardbase.h"
                     29: 
                     30: // Set the background of the OSD and SPU and it's color
                     31: // mode=0: Video on Black
                     32: // mode=1: Black
                     33: // mode=2: Selected Color
                     34: // mode=3: Video on Selected Color
                     35: void VideoSetBackground(struct cvdv_cards *card, int mode, u8 Y, u8 Cb,
                     36:                        u8 Cr);
                     37: 
                     38: 
                     39: int DecoderStartDecode(struct cvdv_cards *card);
                     40: 
                     41: int DecoderStopDecode(struct cvdv_cards *card);
                     42: 
                     43: // Sets Display Override (Still Image Display) to Frame Buffer at specified addresses,
                     44: // addresses are 16 bit, in 64 byte resolution
                     45: // mode: 0=off, 1=Frame, 2=Field
                     46: // width: width of the still picture in 8 pixel units
                     47: int DecoderStillImageDisplay(struct cvdv_cards *card, int mode, int width,
                     48:                             u16 LumaAddr, u16 ChromaAddr);
                     49: 
                     50: // Frees allocated frame buffers
                     51: int DecoderKillFrameBuffers(struct cvdv_cards *card);
                     52: 
                     53: int DecoderSetFrameBuffers(struct cvdv_cards *card, int lines, // number of lines of the decoded MPEG
                     54:                           int TwoFrames,       // 1 if no B-Frames are present in the video stream, thus allowing only 2 framestores
                     55:                           int RMM);    // 1 if RMM
                     56: 
                     57: // returns size of the Video ES Buffer in bytes or 0=error
                     58: u32 DecoderGetVideoESSize(struct cvdv_cards *card);
                     59: 
                     60: // returns level of fullness in bytes
                     61: u32 DecoderGetVideoESLevel(struct cvdv_cards *card);
                     62: 
                     63: // pics=0 --> items=bytes
                     64: // pics=1 --> items=pictures
                     65: void DecoderSetVideoPanic(struct cvdv_cards *card, int pics, int items);
                     66: 
                     67: int DecoderClose(struct cvdv_cards *card);
                     68: 
                     69: // returns 0 on success, 1 on "picture size too big", 2 on "out of DRAM memory"
                     70: int DecoderOpen(struct cvdv_cards *card, int x, int y, // size of the decoded MPEG picture
                     71:                int aspect,     // pixel or picture aspect ratio of the MPEG picture: 1=square pixel 2=3:4 3=9:16 4=1:2.21
                     72:                int Field,      // 0:Frame (interlaced, MPEG-2) , 1:Field (non-interlaced, MPEG-1) structure
                     73:                int Letterbox,  // 0:PanScan (4:3), 1:letterbox (16:9, 8:3) picture ratio  // TODO, ignored for now
                     74:                int RMM         // 1:use ReducedMemoryMode
                     75:     );
                     76: 
                     77: // displays a still image, whose pixel data is in luma and chroma
                     78: int DecoderShowStill(struct cvdv_cards *card, int width, int height,
                     79:                     u8 * luma, u8 * chroma);
                     80: 
                     81: // TODO: untested, probably won't work (have to use "main reads per line" instead of width on SIF)
                     82: int DecoderGetStill(struct cvdv_cards *card, int *width, int *height,
                     83:                    u8 * luma, u8 * chroma);
                     84: 
                     85: #endif                         /* CVDV_VIDEO_H */