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mp_image.h
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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
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8  *
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11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12  * GNU General Public License for more details.
13  *
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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 #undef printf //FIXME
26 #undef fprintf //FIXME
27 #include "mp_msg.h"
28 #include "libavutil/avutil.h"
29 #include "libavutil/avassert.h"
30 #undef realloc
31 #undef malloc
32 #undef free
33 #undef rand
34 #undef srand
35 #undef printf
36 #undef strncpy
37 #define ASMALIGN(ZEROBITS) ".p2align " #ZEROBITS "\n\t"
38 #define CODEC_FLAG2_MEMC_ONLY 0x00001000 ///< Only do ME/MC (I frames -> ref, P frame -> ME+MC).
39 
40 enum AVPixelFormat ff_mp2ff_pix_fmt(int mp);
41 
42 //--------- codec's requirements (filled by the codec/vf) ---------
43 
44 //--- buffer content restrictions:
45 // set if buffer content shouldn't be modified:
46 #define MP_IMGFLAG_PRESERVE 0x01
47 // set if buffer content will be READ.
48 // This can be e.g. for next frame's MC: (I/P mpeg frames) -
49 // then in combination with MP_IMGFLAG_PRESERVE - or it
50 // can be because a video filter or codec will read a significant
51 // amount of data while processing that frame (e.g. blending something
52 // onto the frame, MV based intra prediction).
53 // A frame marked like this should not be placed in to uncachable
54 // video RAM for example.
55 #define MP_IMGFLAG_READABLE 0x02
56 
57 //--- buffer width/stride/plane restrictions: (used for direct rendering)
58 // stride _have_to_ be aligned to MB boundary: [for DR restrictions]
59 #define MP_IMGFLAG_ACCEPT_ALIGNED_STRIDE 0x4
60 // stride should be aligned to MB boundary: [for buffer allocation]
61 #define MP_IMGFLAG_PREFER_ALIGNED_STRIDE 0x8
62 // codec accept any stride (>=width):
63 #define MP_IMGFLAG_ACCEPT_STRIDE 0x10
64 // codec accept any width (width*bpp=stride -> stride%bpp==0) (>=width):
65 #define MP_IMGFLAG_ACCEPT_WIDTH 0x20
66 //--- for planar formats only:
67 // uses only stride[0], and stride[1]=stride[2]=stride[0]>>mpi->chroma_x_shift
68 #define MP_IMGFLAG_COMMON_STRIDE 0x40
69 // uses only planes[0], and calculates planes[1,2] from width,height,imgfmt
70 #define MP_IMGFLAG_COMMON_PLANE 0x80
71 
72 #define MP_IMGFLAGMASK_RESTRICTIONS 0xFF
73 
74 //--------- color info (filled by ff_mp_image_setfmt() ) -----------
75 // set if number of planes > 1
76 #define MP_IMGFLAG_PLANAR 0x100
77 // set if it's YUV colorspace
78 #define MP_IMGFLAG_YUV 0x200
79 // set if it's swapped (BGR or YVU) plane/byteorder
80 #define MP_IMGFLAG_SWAPPED 0x400
81 // set if you want memory for palette allocated and managed by ff_vf_get_image etc.
82 #define MP_IMGFLAG_RGB_PALETTE 0x800
83 
84 #define MP_IMGFLAGMASK_COLORS 0xF00
85 
86 // codec uses drawing/rendering callbacks (draw_slice()-like thing, DR method 2)
87 // [the codec will set this flag if it supports callbacks, and the vo _may_
88 // clear it in get_image() if draw_slice() not implemented]
89 #define MP_IMGFLAG_DRAW_CALLBACK 0x1000
90 // set if it's in video buffer/memory: [set by vo/vf's get_image() !!!]
91 #define MP_IMGFLAG_DIRECT 0x2000
92 // set if buffer is allocated (used in destination images):
93 #define MP_IMGFLAG_ALLOCATED 0x4000
94 
95 // buffer type was printed (do NOT set this flag - it's for INTERNAL USE!!!)
96 #define MP_IMGFLAG_TYPE_DISPLAYED 0x8000
97 
98 // codec doesn't support any form of direct rendering - it has own buffer
99 // allocation. so we just export its buffer pointers:
100 #define MP_IMGTYPE_EXPORT 0
101 // codec requires a static WO buffer, but it does only partial updates later:
102 #define MP_IMGTYPE_STATIC 1
103 // codec just needs some WO memory, where it writes/copies the whole frame to:
104 #define MP_IMGTYPE_TEMP 2
105 // I+P type, requires 2+ independent static R/W buffers
106 #define MP_IMGTYPE_IP 3
107 // I+P+B type, requires 2+ independent static R/W and 1+ temp WO buffers
108 #define MP_IMGTYPE_IPB 4
109 // Upper 16 bits give desired buffer number, -1 means get next available
110 #define MP_IMGTYPE_NUMBERED 5
111 // Doesn't need any buffer, incomplete image (probably a first field only)
112 // we need this type to be able to differentiate between half frames and
113 // all other cases
114 #define MP_IMGTYPE_INCOMPLETE 6
115 
116 #define MP_MAX_PLANES 4
117 
118 #define MP_IMGFIELD_ORDERED 0x01
119 #define MP_IMGFIELD_TOP_FIRST 0x02
120 #define MP_IMGFIELD_REPEAT_FIRST 0x04
121 #define MP_IMGFIELD_TOP 0x08
122 #define MP_IMGFIELD_BOTTOM 0x10
123 #define MP_IMGFIELD_INTERLACED 0x20
124 
125 typedef struct mp_image {
126  unsigned int flags;
127  unsigned char type;
128  int number;
129  unsigned char bpp; // bits/pixel. NOT depth! for RGB it will be n*8
130  unsigned int imgfmt;
131  int width,height; // stored dimensions
132  int x,y,w,h; // visible dimensions
133  unsigned char* planes[MP_MAX_PLANES];
135  char * qscale;
136  int qstride;
137  int pict_type; // 0->unknown, 1->I, 2->P, 3->B
138  int fields;
139  int qscale_type; // 0->mpeg1/4/h263, 1->mpeg2
141  /* these are only used by planar formats Y,U(Cb),V(Cr) */
144  int chroma_x_shift; // horizontal
145  int chroma_y_shift; // vertical
147  /* for private use by filter or vo driver (to store buffer id or dmpi) */
148  void* priv;
149 } mp_image_t;
150 
151 void ff_mp_image_setfmt(mp_image_t* mpi,unsigned int out_fmt);
152 mp_image_t* ff_new_mp_image(int w,int h);
153 void ff_free_mp_image(mp_image_t* mpi);
154 
155 mp_image_t* ff_alloc_mpi(int w, int h, unsigned long int fmt);
157 void ff_copy_mpi(mp_image_t *dmpi, mp_image_t *mpi);
158 
159 #endif /* MPLAYER_MP_IMAGE_H */