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多重定义[...]首先在这里定义

发布于 2024-11-17 00:42:20 字数 10768 浏览 2 评论 0原文

我正在编写一个 H264 解析器（无 OO），但我正在尝试使用一些模块来更好地组织事物。

我遇到了这个问题：

`CMakeFiles/server.dir/mainclass.cpp.o:(.bss+0x0): multiple definition of `I_Macroblock_Modes'  
`CMakeFiles/server.dir/main.cpp.o:(.bss+0x0): first defined here  
`CMakeFiles/server.dir/mainclass.cpp.o:(.bss+0x300): multiple definition of `P_and_SP_macroblock_modes'  
`CMakeFiles/server.dir/main.cpp.o:(.bss+0x300): first defined here  
`CMakeFiles/server.dir/mainclass.cpp.o:(.bss+0x680): multiple definition of `B_Macroblock_Modes' 
`CMakeFiles/server.dir/main.cpp.o:(.bss+0x680): first defined here  
`CMakeFiles/server.dir/thRunAppl.cpp.o:(.bss+0x0): multiple definition of `I_Macroblock_Modes'  
`CMakeFiles/server.dir/main.cpp.o:(.bss+0x0): first defined here  
`CMakeFiles/server.dir/thRunAppl.cpp.o:(.bss+0x300): multiple definition of `P_and_SP_macroblock_modes'  
`CMakeFiles/server.dir/main.cpp.o:(.bss+0x300): first defined here  
`CMakeFiles/server.dir/thRunAppl.cpp.o:(.bss+0x680): multiple definition of `B_Macroblock_Modes'  
`CMakeFiles/server.dir/main.cpp.o:(.bss+0x680): first defined here  
`CMakeFiles/server.dir/h.264parser.cpp.o:(.bss+0x0): multiple definition of `I_Macroblock_Modes'  
`CMakeFiles/server.dir/main.cpp.o:(.bss+0x0): first defined here  
`CMakeFiles/server.dir/h.264parser.cpp.o:(.bss+0x300): multiple definition of `P_and_SP_macroblock_modes'  
`CMakeFiles/server.dir/main.cpp.o:(.bss+0x300): first defined here  
`CMakeFiles/server.dir/h.264parser.cpp.o:(.bss+0x680): multiple definition of `B_Macroblock_Modes'  
`CMakeFiles/server.dir/main.cpp.o:(.bss+0x680): first defined here  
`CMakeFiles/server.dir/moc_mainclass.cxx.o:(.bss+0x0): multiple definition of `I_Macroblock_Modes'
`CMakeFiles/server.dir/main.cpp.o:(.bss+0x0): first defined here
`CMakeFiles/server.dir/moc_mainclass.cxx.o:(.bss+0x300): multiple definition of `P_and_SP_macroblock_modes'
`CMakeFiles/server.dir/main.cpp.o:(.bss+0x300): first defined here
`CMakeFiles/server.dir/moc_mainclass.cxx.o:(.bss+0x680): multiple definition of `B_Macroblock_Modes'
`CMakeFiles/server.dir/main.cpp.o:(.bss+0x680): first defined here
`CMakeFiles/server.dir/moc_thRunAppl.cxx.o:(.bss+0x0): multiple definition of `I_Macroblock_Modes'
`CMakeFiles/server.dir/main.cpp.o:(.bss+0x0): first defined here
`CMakeFiles/server.dir/moc_thRunAppl.cxx.o:(.bss+0x300): multiple definition of `P_and_SP_macroblock_modes'
`CMakeFiles/server.dir/main.cpp.o:(.bss+0x300): first defined here
`CMakeFiles/server.dir/moc_thRunAppl.cxx.o:(.bss+0x680): multiple definition of `B_Macroblock_Modes'
`CMakeFiles/server.dir/main.cpp.o:(.bss+0x680): first defined here
`CMakeFiles/server.dir/h.264parser.cpp.o: In function `MbPartPredMode(int, int)':  
`h.264parser.cpp:(.text+0xf0): undefined reference to `B_macroblockmodes(int, int)'  
`h.264parser.cpp:(.text+0x104): undefined reference to `B_macroblockmodes(int, int)'  
`h.264parser.cpp:(.text+0x111): undefined reference to `I_macroblockmodes(int, int)'  
`h.264parser.cpp:(.text+0x124): undefined reference to `P_and_SP_macroblockmodes(int, int)'  
`h.264parser.cpp:(.text+0x134): undefined reference to `P_and_SP_macroblockmodes(int, int)'

我的情况是：

macroblocktypes.h。只需定义

Macroblocktables.h：

#include "macroblocktypes.h"

int I_Macroblock_Modes[27][7];
int P_and_SP_macroblock_modes[32][7];
int B_Macroblock_Modes[50][7];

int I_macroblockmodes(int line, int column);
int P_and_SP_macroblockmodes(int line, int column);
int B_macroblockmodes(int line, int column);

macroblocktables.cpp，为 .h 文件上的每个数组和函数定义一个数组和一个函数。

#include "macroblocktables.h"
int I_macroblock_modes[27][7] ={
{0, I_4x4, 0, Intra_4x4, NA, NA, NA},
//If this line was to be commented out, the MbPartPredMode macro would have to be changed
//since it relies on the linear rise of the value in the first column.
//{0,   I_NxN,          1,  Intra_8x8,   NA, NA, NA},
{1, I_16x16_0_0_0, NA, Intra_16x16, 0, 0, 0},
{2, I_16x16_1_0_0, NA, Intra_16x16, 1, 0, 0},
{3, I_16x16_2_0_0, NA, Intra_16x16, 2, 0, 0},
{4, I_16x16_3_0_0, NA, Intra_16x16, 3, 0, 0},
{5, I_16x16_0_1_0, NA, Intra_16x16, 0, 1, 0},
{6, I_16x16_1_1_0, NA, Intra_16x16, 1, 1, 0},
{7, I_16x16_2_1_0, NA, Intra_16x16, 2, 1, 0},
{8, I_16x16_3_1_0, NA, Intra_16x16, 3, 1, 0},
{9, I_16x16_0_2_0, NA, Intra_16x16, 0, 2, 0},
{10, I_16x16_1_2_0, NA, Intra_16x16, 1, 2, 0},
{11, I_16x16_2_2_0, NA, Intra_16x16, 2, 2, 0},
{12, I_16x16_3_2_0, NA, Intra_16x16, 3, 2, 0},
{13, I_16x16_0_0_1, NA, Intra_16x16, 0, 0, 15},
{14, I_16x16_1_0_1, NA, Intra_16x16, 1, 0, 15},
{15, I_16x16_2_0_1, NA, Intra_16x16, 2, 0, 15},
{16, I_16x16_3_0_1, NA, Intra_16x16, 3, 0, 15},
{17, I_16x16_0_1_1, NA, Intra_16x16, 0, 1, 15},
{18, I_16x16_1_1_1, NA, Intra_16x16, 1, 1, 15},
{19, I_16x16_2_1_1, NA, Intra_16x16, 2, 1, 15},
{20, I_16x16_3_1_1, NA, Intra_16x16, 3, 1, 15},
{21, I_16x16_0_2_1, NA, Intra_16x16, 0, 2, 15},
{22, I_16x16_1_2_1, NA, Intra_16x16, 1, 2, 15},
{23, I_16x16_2_2_1, NA, Intra_16x16, 2, 2, 15},
{24, I_16x16_3_2_1, NA, Intra_16x16, 3, 2, 15},
{25, I_PCM, NA, NA, NA, NA, NA}};

int P_and_SP_macroblock_modes[32][7] = {
{0, P_L0_16x16, 1, Pred_L0, NA, 16, 16},
{1, P_L0_L0_16x8, 2, Pred_L0, Pred_L0, 16, 8},
{2, P_L0_L0_8x16, 2, Pred_L0, Pred_L0, 8, 16},
{3, P_8x8, 4, NA, NA, 8, 8},
{4, P_8x8ref0, 4, NA, NA, 8, 8},
{0, I_4x4, 0, Intra_4x4, NA, NA, NA},
{1, I_16x16_0_0_0, NA, Intra_16x16, 0, 0, 0},
{2, I_16x16_1_0_0, NA, Intra_16x16, 1, 0, 0},
{3, I_16x16_2_0_0, NA, Intra_16x16, 2, 0, 0},
{4, I_16x16_3_0_0, NA, Intra_16x16, 3, 0, 0},
{5, I_16x16_0_1_0, NA, Intra_16x16, 0, 1, 0},
{6, I_16x16_1_1_0, NA, Intra_16x16, 1, 1, 0},
{7, I_16x16_2_1_0, NA, Intra_16x16, 2, 1, 0},
{8, I_16x16_3_1_0, NA, Intra_16x16, 3, 1, 0},
{9, I_16x16_0_2_0, NA, Intra_16x16, 0, 2, 0},
{10, I_16x16_1_2_0, NA, Intra_16x16, 1, 2, 0},
{11, I_16x16_2_2_0, NA, Intra_16x16, 2, 2, 0},
{12, I_16x16_3_2_0, NA, Intra_16x16, 3, 2, 0},
{13, I_16x16_0_0_1, NA, Intra_16x16, 0, 0, 15},
{14, I_16x16_1_0_1, NA, Intra_16x16, 1, 0, 15},
{15, I_16x16_2_0_1, NA, Intra_16x16, 2, 0, 15},
{16, I_16x16_3_0_1, NA, Intra_16x16, 3, 0, 15},
{17, I_16x16_0_1_1, NA, Intra_16x16, 0, 1, 15},
{18, I_16x16_1_1_1, NA, Intra_16x16, 1, 1, 15},
{19, I_16x16_2_1_1, NA, Intra_16x16, 2, 1, 15},
{20, I_16x16_3_1_1, NA, Intra_16x16, 3, 1, 15},
{21, I_16x16_0_2_1, NA, Intra_16x16, 0, 2, 15},
{22, I_16x16_1_2_1, NA, Intra_16x16, 1, 2, 15},
{23, I_16x16_2_2_1, NA, Intra_16x16, 2, 2, 15},
{24, I_16x16_3_2_1, NA, Intra_16x16, 3, 2, 15},
{25, I_PCM, NA, NA, NA, NA, NA},
{NA, P_Skip, 1, Pred_L0, NA, 16, 16}};

int B_macroblock_modes[50][7] = {
{0, B_Direct_16x16, NA, Direct, NA, 8, 8},
{1, B_L0_16x16, 1, Pred_L0, NA, 16, 16},
{2, B_L1_16x16, 1, Pred_L1, NA, 16, 16},
{3, B_Bi_16x16, 1, BiPred, NA, 16, 16},
{4, B_L0_L0_16x8, 2, Pred_L0, Pred_L0, 16, 8},
{5, B_L0_L0_8x16, 2, Pred_L0, Pred_L0, 8, 16},
{6, B_L1_L1_16x8, 2, Pred_L1, Pred_L1, 16, 8},
{7, B_L1_L1_8x16, 2, Pred_L1, Pred_L1, 8, 16},
{8, B_L0_L1_16x8, 2, Pred_L0, Pred_L1, 16, 8},
{9, B_L0_L1_8x16, 2, Pred_L0, Pred_L1, 8, 16},
{10, B_L1_L0_16x8, 2, Pred_L1, Pred_L0, 16, 8},
{11, B_L1_L0_8x16, 2, Pred_L1, Pred_L0, 8, 16},
{12, B_L0_Bi_16x8, 2, Pred_L0, BiPred, 16, 8},
{13, B_L0_Bi_8x16, 2, Pred_L0, BiPred, 8, 16},
{14, B_L1_Bi_16x8, 2, Pred_L1, BiPred, 16, 8},
{15, B_L1_Bi_8x16, 2, Pred_L1, BiPred, 8, 16},
{16, B_Bi_L0_16x8, 2, BiPred, Pred_L0, 16, 8},
{17, B_Bi_L0_8x16, 2, BiPred, Pred_L0, 8, 16},
{18, B_Bi_L1_16x8, 2, BiPred, Pred_L1, 16, 8},
{19, B_Bi_L1_8x16, 2, BiPred, Pred_L1, 8, 16},
{20, B_Bi_Bi_16x8, 2, BiPred, BiPred, 16, 8},
{21, B_Bi_Bi_8x16, 2, BiPred, BiPred, 8, 16},
{22, B_8x8, 4, NA, NA, 8, 8},
{0, I_4x4, 0, Intra_4x4, NA, NA, NA},
{1, I_16x16_0_0_0, NA, Intra_16x16, 0, 0, 0},
{2, I_16x16_1_0_0, NA, Intra_16x16, 1, 0, 0},
{3, I_16x16_2_0_0, NA, Intra_16x16, 2, 0, 0},
{4, I_16x16_3_0_0, NA, Intra_16x16, 3, 0, 0},
{5, I_16x16_0_1_0, NA, Intra_16x16, 0, 1, 0},
{6, I_16x16_1_1_0, NA, Intra_16x16, 1, 1, 0},
{7, I_16x16_2_1_0, NA, Intra_16x16, 2, 1, 0},
{8, I_16x16_3_1_0, NA, Intra_16x16, 3, 1, 0},
{9, I_16x16_0_2_0, NA, Intra_16x16, 0, 2, 0},
{10, I_16x16_1_2_0, NA, Intra_16x16, 1, 2, 0},
{11, I_16x16_2_2_0, NA, Intra_16x16, 2, 2, 0},
{12, I_16x16_3_2_0, NA, Intra_16x16, 3, 2, 0},
{13, I_16x16_0_0_1, NA, Intra_16x16, 0, 0, 15},
{14, I_16x16_1_0_1, NA, Intra_16x16, 1, 0, 15},
{15, I_16x16_2_0_1, NA, Intra_16x16, 2, 0, 15},
{16, I_16x16_3_0_1, NA, Intra_16x16, 3, 0, 15},
{17, I_16x16_0_1_1, NA, Intra_16x16, 0, 1, 15},
{18, I_16x16_1_1_1, NA, Intra_16x16, 1, 1, 15},
{19, I_16x16_2_1_1, NA, Intra_16x16, 2, 1, 15},
{20, I_16x16_3_1_1, NA, Intra_16x16, 3, 1, 15},
{21, I_16x16_0_2_1, NA, Intra_16x16, 0, 2, 15},
{22, I_16x16_1_2_1, NA, Intra_16x16, 1, 2, 15},
{23, I_16x16_2_2_1, NA, Intra_16x16, 2, 2, 15},
{24, I_16x16_3_2_1, NA, Intra_16x16, 3, 2, 15},
{25, I_PCM, NA, NA, NA, NA, NA},
{NA, B_Skip, NA, Direct, NA, 8, 8}};

int I_macroblockmodes(int line, int column) {
if (line < 27 && column < 7)
    return I_macroblock_modes[line][column];
else {
    if (line >= 27) {
        return -10000; //line is bigger than the array size
    } else {
        return -20000; //column is bigger than the array size
    }
}}
//Inter prediction slices - Macroblock types
//Defined strictly by norm, page 121.

//(Table 7-13 Macroblock type values 0 to 4 for P and SP slices)
/*
First column:   mb_type
Second column:  Name of mb_type
Third column:   NumMbPart( mb_type )
Fourth column:  MbPartPredMode( mb_type, 0 )
Fifth column:   MbPartPredMode( mb_type, 1 )
Sixth column:   MbPartWidth( mb_type )
Seventh column: MbPartHeight( mb_type )
*/
int P_and_SP_macroblockmodes(int line, int column){
 if (line < 32 && column < 7)
    return P_and_SP_macroblock_modes[line][column];
else {
    if (line >= 32) {
        return -10000; //line is bigger than the array size
    } else {
        return -20000; //column is bigger than the array size
    }
}}



//p94. Table 7-14 – Macroblock type values 0 to 22 for B slices
/*
First column:   mb_type
Second column:  Name of mb_type
Third column:   NumMbPart( mb_type )
Fourth column:  MbPartPredMode( mb_type, 0 )
Fifth column:   MbPartPredMode( mb_type, 1 )
Sixth column:   MbPartWidth( mb_type )
Seventh column: MbPartHeight( mb_type )
 */
int B_macroblockmodes(int line, int column){
 if (line < 50 && column < 7)
    return B_macroblock_modes[line][column];
else {
    if (line >= 50) {
        return -10000; //line is bigger than the array size
    } else {
        return -20000; //column is bigger than the array size
    }
}}

最后是我的 h.264 文件（.cpp 和 .h）。我在.h 中包含了macroblocktable.h 和macroblocktype.h，在h.264.cpp 中仅包含了h.264.h。

我想使用 h.264.cpp 中的 Macroblocktable.cpp 中的函数。

提前致谢

原文

I'm writing a H264 parser (no OO), but I'm trying to use some modules to organize better the things.

I'm having this problems:

`CMakeFiles/server.dir/mainclass.cpp.o:(.bss+0x0): multiple definition of `I_Macroblock_Modes'  
`CMakeFiles/server.dir/main.cpp.o:(.bss+0x0): first defined here  
`CMakeFiles/server.dir/mainclass.cpp.o:(.bss+0x300): multiple definition of `P_and_SP_macroblock_modes'  
`CMakeFiles/server.dir/main.cpp.o:(.bss+0x300): first defined here  
`CMakeFiles/server.dir/mainclass.cpp.o:(.bss+0x680): multiple definition of `B_Macroblock_Modes' 
`CMakeFiles/server.dir/main.cpp.o:(.bss+0x680): first defined here  
`CMakeFiles/server.dir/thRunAppl.cpp.o:(.bss+0x0): multiple definition of `I_Macroblock_Modes'  
`CMakeFiles/server.dir/main.cpp.o:(.bss+0x0): first defined here  
`CMakeFiles/server.dir/thRunAppl.cpp.o:(.bss+0x300): multiple definition of `P_and_SP_macroblock_modes'  
`CMakeFiles/server.dir/main.cpp.o:(.bss+0x300): first defined here  
`CMakeFiles/server.dir/thRunAppl.cpp.o:(.bss+0x680): multiple definition of `B_Macroblock_Modes'  
`CMakeFiles/server.dir/main.cpp.o:(.bss+0x680): first defined here  
`CMakeFiles/server.dir/h.264parser.cpp.o:(.bss+0x0): multiple definition of `I_Macroblock_Modes'  
`CMakeFiles/server.dir/main.cpp.o:(.bss+0x0): first defined here  
`CMakeFiles/server.dir/h.264parser.cpp.o:(.bss+0x300): multiple definition of `P_and_SP_macroblock_modes'  
`CMakeFiles/server.dir/main.cpp.o:(.bss+0x300): first defined here  
`CMakeFiles/server.dir/h.264parser.cpp.o:(.bss+0x680): multiple definition of `B_Macroblock_Modes'  
`CMakeFiles/server.dir/main.cpp.o:(.bss+0x680): first defined here  
`CMakeFiles/server.dir/moc_mainclass.cxx.o:(.bss+0x0): multiple definition of `I_Macroblock_Modes'
`CMakeFiles/server.dir/main.cpp.o:(.bss+0x0): first defined here
`CMakeFiles/server.dir/moc_mainclass.cxx.o:(.bss+0x300): multiple definition of `P_and_SP_macroblock_modes'
`CMakeFiles/server.dir/main.cpp.o:(.bss+0x300): first defined here
`CMakeFiles/server.dir/moc_mainclass.cxx.o:(.bss+0x680): multiple definition of `B_Macroblock_Modes'
`CMakeFiles/server.dir/main.cpp.o:(.bss+0x680): first defined here
`CMakeFiles/server.dir/moc_thRunAppl.cxx.o:(.bss+0x0): multiple definition of `I_Macroblock_Modes'
`CMakeFiles/server.dir/main.cpp.o:(.bss+0x0): first defined here
`CMakeFiles/server.dir/moc_thRunAppl.cxx.o:(.bss+0x300): multiple definition of `P_and_SP_macroblock_modes'
`CMakeFiles/server.dir/main.cpp.o:(.bss+0x300): first defined here
`CMakeFiles/server.dir/moc_thRunAppl.cxx.o:(.bss+0x680): multiple definition of `B_Macroblock_Modes'
`CMakeFiles/server.dir/main.cpp.o:(.bss+0x680): first defined here
`CMakeFiles/server.dir/h.264parser.cpp.o: In function `MbPartPredMode(int, int)':  
`h.264parser.cpp:(.text+0xf0): undefined reference to `B_macroblockmodes(int, int)'  
`h.264parser.cpp:(.text+0x104): undefined reference to `B_macroblockmodes(int, int)'  
`h.264parser.cpp:(.text+0x111): undefined reference to `I_macroblockmodes(int, int)'  
`h.264parser.cpp:(.text+0x124): undefined reference to `P_and_SP_macroblockmodes(int, int)'  
`h.264parser.cpp:(.text+0x134): undefined reference to `P_and_SP_macroblockmodes(int, int)'

My scenario is:

macroblocktypes.h. just with defines

macroblocktables.h:

#include "macroblocktypes.h"

int I_Macroblock_Modes[27][7];
int P_and_SP_macroblock_modes[32][7];
int B_Macroblock_Modes[50][7];

int I_macroblockmodes(int line, int column);
int P_and_SP_macroblockmodes(int line, int column);
int B_macroblockmodes(int line, int column);

macroblocktables.cpp, with a array and a function defined like this for each array and function on .h file.

#include "macroblocktables.h"
int I_macroblock_modes[27][7] ={
{0, I_4x4, 0, Intra_4x4, NA, NA, NA},
//If this line was to be commented out, the MbPartPredMode macro would have to be changed
//since it relies on the linear rise of the value in the first column.
//{0,   I_NxN,          1,  Intra_8x8,   NA, NA, NA},
{1, I_16x16_0_0_0, NA, Intra_16x16, 0, 0, 0},
{2, I_16x16_1_0_0, NA, Intra_16x16, 1, 0, 0},
{3, I_16x16_2_0_0, NA, Intra_16x16, 2, 0, 0},
{4, I_16x16_3_0_0, NA, Intra_16x16, 3, 0, 0},
{5, I_16x16_0_1_0, NA, Intra_16x16, 0, 1, 0},
{6, I_16x16_1_1_0, NA, Intra_16x16, 1, 1, 0},
{7, I_16x16_2_1_0, NA, Intra_16x16, 2, 1, 0},
{8, I_16x16_3_1_0, NA, Intra_16x16, 3, 1, 0},
{9, I_16x16_0_2_0, NA, Intra_16x16, 0, 2, 0},
{10, I_16x16_1_2_0, NA, Intra_16x16, 1, 2, 0},
{11, I_16x16_2_2_0, NA, Intra_16x16, 2, 2, 0},
{12, I_16x16_3_2_0, NA, Intra_16x16, 3, 2, 0},
{13, I_16x16_0_0_1, NA, Intra_16x16, 0, 0, 15},
{14, I_16x16_1_0_1, NA, Intra_16x16, 1, 0, 15},
{15, I_16x16_2_0_1, NA, Intra_16x16, 2, 0, 15},
{16, I_16x16_3_0_1, NA, Intra_16x16, 3, 0, 15},
{17, I_16x16_0_1_1, NA, Intra_16x16, 0, 1, 15},
{18, I_16x16_1_1_1, NA, Intra_16x16, 1, 1, 15},
{19, I_16x16_2_1_1, NA, Intra_16x16, 2, 1, 15},
{20, I_16x16_3_1_1, NA, Intra_16x16, 3, 1, 15},
{21, I_16x16_0_2_1, NA, Intra_16x16, 0, 2, 15},
{22, I_16x16_1_2_1, NA, Intra_16x16, 1, 2, 15},
{23, I_16x16_2_2_1, NA, Intra_16x16, 2, 2, 15},
{24, I_16x16_3_2_1, NA, Intra_16x16, 3, 2, 15},
{25, I_PCM, NA, NA, NA, NA, NA}};

int P_and_SP_macroblock_modes[32][7] = {
{0, P_L0_16x16, 1, Pred_L0, NA, 16, 16},
{1, P_L0_L0_16x8, 2, Pred_L0, Pred_L0, 16, 8},
{2, P_L0_L0_8x16, 2, Pred_L0, Pred_L0, 8, 16},
{3, P_8x8, 4, NA, NA, 8, 8},
{4, P_8x8ref0, 4, NA, NA, 8, 8},
{0, I_4x4, 0, Intra_4x4, NA, NA, NA},
{1, I_16x16_0_0_0, NA, Intra_16x16, 0, 0, 0},
{2, I_16x16_1_0_0, NA, Intra_16x16, 1, 0, 0},
{3, I_16x16_2_0_0, NA, Intra_16x16, 2, 0, 0},
{4, I_16x16_3_0_0, NA, Intra_16x16, 3, 0, 0},
{5, I_16x16_0_1_0, NA, Intra_16x16, 0, 1, 0},
{6, I_16x16_1_1_0, NA, Intra_16x16, 1, 1, 0},
{7, I_16x16_2_1_0, NA, Intra_16x16, 2, 1, 0},
{8, I_16x16_3_1_0, NA, Intra_16x16, 3, 1, 0},
{9, I_16x16_0_2_0, NA, Intra_16x16, 0, 2, 0},
{10, I_16x16_1_2_0, NA, Intra_16x16, 1, 2, 0},
{11, I_16x16_2_2_0, NA, Intra_16x16, 2, 2, 0},
{12, I_16x16_3_2_0, NA, Intra_16x16, 3, 2, 0},
{13, I_16x16_0_0_1, NA, Intra_16x16, 0, 0, 15},
{14, I_16x16_1_0_1, NA, Intra_16x16, 1, 0, 15},
{15, I_16x16_2_0_1, NA, Intra_16x16, 2, 0, 15},
{16, I_16x16_3_0_1, NA, Intra_16x16, 3, 0, 15},
{17, I_16x16_0_1_1, NA, Intra_16x16, 0, 1, 15},
{18, I_16x16_1_1_1, NA, Intra_16x16, 1, 1, 15},
{19, I_16x16_2_1_1, NA, Intra_16x16, 2, 1, 15},
{20, I_16x16_3_1_1, NA, Intra_16x16, 3, 1, 15},
{21, I_16x16_0_2_1, NA, Intra_16x16, 0, 2, 15},
{22, I_16x16_1_2_1, NA, Intra_16x16, 1, 2, 15},
{23, I_16x16_2_2_1, NA, Intra_16x16, 2, 2, 15},
{24, I_16x16_3_2_1, NA, Intra_16x16, 3, 2, 15},
{25, I_PCM, NA, NA, NA, NA, NA},
{NA, P_Skip, 1, Pred_L0, NA, 16, 16}};

int B_macroblock_modes[50][7] = {
{0, B_Direct_16x16, NA, Direct, NA, 8, 8},
{1, B_L0_16x16, 1, Pred_L0, NA, 16, 16},
{2, B_L1_16x16, 1, Pred_L1, NA, 16, 16},
{3, B_Bi_16x16, 1, BiPred, NA, 16, 16},
{4, B_L0_L0_16x8, 2, Pred_L0, Pred_L0, 16, 8},
{5, B_L0_L0_8x16, 2, Pred_L0, Pred_L0, 8, 16},
{6, B_L1_L1_16x8, 2, Pred_L1, Pred_L1, 16, 8},
{7, B_L1_L1_8x16, 2, Pred_L1, Pred_L1, 8, 16},
{8, B_L0_L1_16x8, 2, Pred_L0, Pred_L1, 16, 8},
{9, B_L0_L1_8x16, 2, Pred_L0, Pred_L1, 8, 16},
{10, B_L1_L0_16x8, 2, Pred_L1, Pred_L0, 16, 8},
{11, B_L1_L0_8x16, 2, Pred_L1, Pred_L0, 8, 16},
{12, B_L0_Bi_16x8, 2, Pred_L0, BiPred, 16, 8},
{13, B_L0_Bi_8x16, 2, Pred_L0, BiPred, 8, 16},
{14, B_L1_Bi_16x8, 2, Pred_L1, BiPred, 16, 8},
{15, B_L1_Bi_8x16, 2, Pred_L1, BiPred, 8, 16},
{16, B_Bi_L0_16x8, 2, BiPred, Pred_L0, 16, 8},
{17, B_Bi_L0_8x16, 2, BiPred, Pred_L0, 8, 16},
{18, B_Bi_L1_16x8, 2, BiPred, Pred_L1, 16, 8},
{19, B_Bi_L1_8x16, 2, BiPred, Pred_L1, 8, 16},
{20, B_Bi_Bi_16x8, 2, BiPred, BiPred, 16, 8},
{21, B_Bi_Bi_8x16, 2, BiPred, BiPred, 8, 16},
{22, B_8x8, 4, NA, NA, 8, 8},
{0, I_4x4, 0, Intra_4x4, NA, NA, NA},
{1, I_16x16_0_0_0, NA, Intra_16x16, 0, 0, 0},
{2, I_16x16_1_0_0, NA, Intra_16x16, 1, 0, 0},
{3, I_16x16_2_0_0, NA, Intra_16x16, 2, 0, 0},
{4, I_16x16_3_0_0, NA, Intra_16x16, 3, 0, 0},
{5, I_16x16_0_1_0, NA, Intra_16x16, 0, 1, 0},
{6, I_16x16_1_1_0, NA, Intra_16x16, 1, 1, 0},
{7, I_16x16_2_1_0, NA, Intra_16x16, 2, 1, 0},
{8, I_16x16_3_1_0, NA, Intra_16x16, 3, 1, 0},
{9, I_16x16_0_2_0, NA, Intra_16x16, 0, 2, 0},
{10, I_16x16_1_2_0, NA, Intra_16x16, 1, 2, 0},
{11, I_16x16_2_2_0, NA, Intra_16x16, 2, 2, 0},
{12, I_16x16_3_2_0, NA, Intra_16x16, 3, 2, 0},
{13, I_16x16_0_0_1, NA, Intra_16x16, 0, 0, 15},
{14, I_16x16_1_0_1, NA, Intra_16x16, 1, 0, 15},
{15, I_16x16_2_0_1, NA, Intra_16x16, 2, 0, 15},
{16, I_16x16_3_0_1, NA, Intra_16x16, 3, 0, 15},
{17, I_16x16_0_1_1, NA, Intra_16x16, 0, 1, 15},
{18, I_16x16_1_1_1, NA, Intra_16x16, 1, 1, 15},
{19, I_16x16_2_1_1, NA, Intra_16x16, 2, 1, 15},
{20, I_16x16_3_1_1, NA, Intra_16x16, 3, 1, 15},
{21, I_16x16_0_2_1, NA, Intra_16x16, 0, 2, 15},
{22, I_16x16_1_2_1, NA, Intra_16x16, 1, 2, 15},
{23, I_16x16_2_2_1, NA, Intra_16x16, 2, 2, 15},
{24, I_16x16_3_2_1, NA, Intra_16x16, 3, 2, 15},
{25, I_PCM, NA, NA, NA, NA, NA},
{NA, B_Skip, NA, Direct, NA, 8, 8}};

int I_macroblockmodes(int line, int column) {
if (line < 27 && column < 7)
    return I_macroblock_modes[line][column];
else {
    if (line >= 27) {
        return -10000; //line is bigger than the array size
    } else {
        return -20000; //column is bigger than the array size
    }
}}
//Inter prediction slices - Macroblock types
//Defined strictly by norm, page 121.

//(Table 7-13 Macroblock type values 0 to 4 for P and SP slices)
/*
First column:   mb_type
Second column:  Name of mb_type
Third column:   NumMbPart( mb_type )
Fourth column:  MbPartPredMode( mb_type, 0 )
Fifth column:   MbPartPredMode( mb_type, 1 )
Sixth column:   MbPartWidth( mb_type )
Seventh column: MbPartHeight( mb_type )
*/
int P_and_SP_macroblockmodes(int line, int column){
 if (line < 32 && column < 7)
    return P_and_SP_macroblock_modes[line][column];
else {
    if (line >= 32) {
        return -10000; //line is bigger than the array size
    } else {
        return -20000; //column is bigger than the array size
    }
}}



//p94. Table 7-14 – Macroblock type values 0 to 22 for B slices
/*
First column:   mb_type
Second column:  Name of mb_type
Third column:   NumMbPart( mb_type )
Fourth column:  MbPartPredMode( mb_type, 0 )
Fifth column:   MbPartPredMode( mb_type, 1 )
Sixth column:   MbPartWidth( mb_type )
Seventh column: MbPartHeight( mb_type )
 */
int B_macroblockmodes(int line, int column){
 if (line < 50 && column < 7)
    return B_macroblock_modes[line][column];
else {
    if (line >= 50) {
        return -10000; //line is bigger than the array size
    } else {
        return -20000; //column is bigger than the array size
    }
}}

And finally my h.264 files (.cpp and .h). Im including in the .h the macroblocktable.h and macroblocktype.h, and in the h.264.cpp just the h.264.h.

I would like to use the functions from the macroblocktable.cpp in the h.264.cpp.

Thanks in advance

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单挑你×的.吻 2024-11-24 00:42:20

您必须仅保留 .h 文件中的声明，而不是定义，以免出现任何链接器错误。这些

int I_Macroblock_Modes[27][7];
int P_and_SP_macroblock_modes[32][7];
int B_Macroblock_Modes[50][7];

是定义，看起来并不直观。将这些更改为

extern int I_Macroblock_Modes[27][7];
extern int P_and_SP_macroblock_modes[32][7];
extern int B_Macroblock_Modes[50][7];

，你应该没问题

You must keep only the declarations in a .h file, not the definitions, lest you should get any linker errors. These

int I_Macroblock_Modes[27][7];
int P_and_SP_macroblock_modes[32][7];
int B_Macroblock_Modes[50][7];

are definitions, not intuitive as it may seem. Change these to

extern int I_Macroblock_Modes[27][7];
extern int P_and_SP_macroblock_modes[32][7];
extern int B_Macroblock_Modes[50][7];

and you should be fine

回复 原文
黑凤梨 2024-11-24 00:42:20

这不是“只是定义”。您在其中声明变量，因此每次包含该变量时，您都在重新声明全局变量。

如果您想要从其他 .c/.cpp 文件访问 I_Macroblock_Modes ，则应在 Macroblocktables.h 标头中输入：

//resides in macroblocktables.cpp
extern int I_Macroblock_Modes[27][7];
extern int P_and_SP_macroblock_modes[32][7];
extern int B_Macroblock_Modes[50][7];

// the rest of it

因为这些 int 数组是在 Macroblocktables.cpp 中定义的，对吗？

在 C/C++ 中，每次您执行以下操作时：

int myarray[4];
char mychar;

或者更一般地说，

type var_name;

您告诉编译器：请为我在堆栈上分配一个名为 X 且类型为 T 的变量。

当您#include header.h时，在最基本的解释中，您是在告诉预处理器：打开 header.h ctrl+c 全部内容，然后在此处 ctrl+v 。然后，预处理后的源文件将被输入到编译器中，每次它看到 type var_name 时，它都会执行我上面解释的操作。

抱歉，如果信息太多，但我只是想写它：P

It's not "just defines". You are declaring variables inside it, therefore every time that gets included your are redeclaring global variables.

If what you want is to access I_Macroblock_Modes from other .c/.cpp files, in the macroblocktables.h header you should put:

//resides in macroblocktables.cpp
extern int I_Macroblock_Modes[27][7];
extern int P_and_SP_macroblock_modes[32][7];
extern int B_Macroblock_Modes[50][7];

// the rest of it

Because those int arrays are defined in macroblocktables.cpp, right?

In C/C++ everytime you do something like:

int myarray[4];
char mychar;

or more generally

type var_name;

you are telling to the compiler: please allocate on the stack for me, a variable named X that has type T.

when you #include header.h, in the most basic explanation, you are telling the preprocessor: open header.h ctrl+c all of it, and ctrl+v it here. Then that preprocessed source file is fed to your compiler and every time it sees type var_name it will do what i explained above.

Sorry if this is too much info, but I just felt like writing it :P

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