libmpcodecs/mp_image.h

   1 /*
   2  * This file is part of MPlayer.
   3  *
   4  * MPlayer is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * MPlayer is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17  */
  18
  19 #ifndef MPLAYER_MP_IMAGE_H
  20 #define MPLAYER_MP_IMAGE_H
  21
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <string.h>
  25 #include "mp_msg.h"
  26
  27 //--------- codec's requirements (filled by the codec/vf) ---------
  28
  29 //--- buffer content restrictions:
  30 // set if buffer content shouldn't be modified:
  31 #define MP_IMGFLAG_PRESERVE 0x01
  32 // set if buffer content will be READ for next frame's MC: (I/P mpeg frames)
  33 #define MP_IMGFLAG_READABLE 0x02
  34
  35 //--- buffer width/stride/plane restrictions: (used for direct rendering)
  36 // stride _have_to_ be aligned to MB boundary:  [for DR restrictions]
  37 #define MP_IMGFLAG_ACCEPT_ALIGNED_STRIDE 0x4
  38 // stride should be aligned to MB boundary:     [for buffer allocation]
  39 #define MP_IMGFLAG_PREFER_ALIGNED_STRIDE 0x8
  40 // codec accept any stride (>=width):
  41 #define MP_IMGFLAG_ACCEPT_STRIDE 0x10
  42 // codec accept any width (width*bpp=stride -> stride%bpp==0) (>=width):
  43 #define MP_IMGFLAG_ACCEPT_WIDTH 0x20
  44 //--- for planar formats only:
  45 // uses only stride[0], and stride[1]=stride[2]=stride[0]>>mpi->chroma_x_shift
  46 #define MP_IMGFLAG_COMMON_STRIDE 0x40
  47 // uses only planes[0], and calculates planes[1,2] from width,height,imgfmt
  48 #define MP_IMGFLAG_COMMON_PLANE 0x80
  49
  50 #define MP_IMGFLAGMASK_RESTRICTIONS 0xFF
  51
  52 //--------- color info (filled by mp_image_setfmt() ) -----------
  53 // set if number of planes > 1
  54 #define MP_IMGFLAG_PLANAR 0x100
  55 // set if it's YUV colorspace
  56 #define MP_IMGFLAG_YUV 0x200
  57 // set if it's swapped (BGR or YVU) plane/byteorder
  58 #define MP_IMGFLAG_SWAPPED 0x400
  59 // set if you want memory for palette allocated and managed by vf_get_image etc.
  60 #define MP_IMGFLAG_RGB_PALETTE 0x800
  61
  62 #define MP_IMGFLAGMASK_COLORS 0xF00
  63
  64 // codec uses drawing/rendering callbacks (draw_slice()-like thing, DR method 2)
  65 // [the codec will set this flag if it supports callbacks, and the vo _may_
  66 //  clear it in get_image() if draw_slice() not implemented]
  67 #define MP_IMGFLAG_DRAW_CALLBACK 0x1000
  68 // set if it's in video buffer/memory: [set by vo/vf's get_image() !!!]
  69 #define MP_IMGFLAG_DIRECT 0x2000
  70 // set if buffer is allocated (used in destination images):
  71 #define MP_IMGFLAG_ALLOCATED 0x4000
  72
  73 // buffer type was printed (do NOT set this flag - it's for INTERNAL USE!!!)
  74 #define MP_IMGFLAG_TYPE_DISPLAYED 0x8000
  75
  76 // codec doesn't support any form of direct rendering - it has own buffer
  77 // allocation. so we just export its buffer pointers:
  78 #define MP_IMGTYPE_EXPORT 0
  79 // codec requires a static WO buffer, but it does only partial updates later:
  80 #define MP_IMGTYPE_STATIC 1
  81 // codec just needs some WO memory, where it writes/copies the whole frame to:
  82 #define MP_IMGTYPE_TEMP 2
  83 // I+P type, requires 2+ independent static R/W buffers
  84 #define MP_IMGTYPE_IP 3
  85 // I+P+B type, requires 2+ independent static R/W and 1+ temp WO buffers
  86 #define MP_IMGTYPE_IPB 4
  87 // Upper 16 bits give desired buffer number, -1 means get next available
  88 #define MP_IMGTYPE_NUMBERED 5
  89
  90 #define MP_MAX_PLANES   4
  91
  92 #define MP_IMGFIELD_ORDERED 0x01
  93 #define MP_IMGFIELD_TOP_FIRST 0x02
  94 #define MP_IMGFIELD_REPEAT_FIRST 0x04
  95 #define MP_IMGFIELD_TOP 0x08
  96 #define MP_IMGFIELD_BOTTOM 0x10
  97 #define MP_IMGFIELD_INTERLACED 0x20
  98
  99 typedef struct mp_image {
 100     unsigned int flags;
 101     unsigned char type;
 102     int number;
 103     unsigned char bpp;  // bits/pixel. NOT depth! for RGB it will be n*8
 104     unsigned int imgfmt;
 105     int width,height;  // stored dimensions
 106     int x,y,w,h;  // visible dimensions
 107     unsigned char* planes[MP_MAX_PLANES];
 108     int stride[MP_MAX_PLANES];
 109     char * qscale;
 110     int qstride;
 111     int pict_type; // 0->unknown, 1->I, 2->P, 3->B
 112     int fields;
 113     int qscale_type; // 0->mpeg1/4/h263, 1->mpeg2
 114     int num_planes;
 115     /* these are only used by planar formats Y,U(Cb),V(Cr) */
 116     int chroma_width;
 117     int chroma_height;
 118     int chroma_x_shift; // horizontal
 119     int chroma_y_shift; // vertical
 120     int usage_count;
 121     /* for private use by filter or vo driver (to store buffer id or dmpi) */
 122     void* priv;
 123 } mp_image_t;
 124
 125 void mp_image_setfmt(mp_image_t* mpi,unsigned int out_fmt);
 126 mp_image_t* new_mp_image(int w,int h);
 127 void free_mp_image(mp_image_t* mpi);
 128
 129 mp_image_t* alloc_mpi(int w, int h, unsigned long int fmt);
 130 void mp_image_alloc_planes(mp_image_t *mpi);
 131 void copy_mpi(mp_image_t *dmpi, mp_image_t *mpi);
 132
 133 #endif /* MPLAYER_MP_IMAGE_H */