个人中心
文章发布
退出
作者热门文章
- html - 出于某种原因，IE8 对我的 Sass 文件中继承的 html5 CSS 不友好？
- JMeter 在响应断言中使用 span 标签的问题
- html - 在 :hover and :active? 上具有不同效果的 CSS 动画
- html - 相对于居中的 html 内容固定的 CSS 重复背景？
26
4
全部
有谁知道详情 QOMX_COLOR_FormatYUV420PackedSemiPlanar64x32Tile2m8ka 格式，这是qcom 7x30 h/w解码器的输出格式，数据是如何以这种颜色格式存储的？谢谢
最佳答案
这是我对此的研究，关于 QOMX_COLOR_FormatYUV420PackedSemiPlanar64x32Tile2m8ka 转换为 YUV420Planar (I420) .至于 QOMX_COLOR_FormatYUV420PackedSemiPlanar64x32Tile2m8ka格式方面，可以引用($your_android_native_sdk_dir)/WORKING_DIRECTORY/hardware/qcom/media/mm-core/inc/QOMX_IVCommonExtensions.h源代码。这个函数可能理想地支持通用分辨率，但是我只测试 CIF 大小，因为给定的源输入不可用。当然，您可以将其他大小的数据伪造为给定的输入。如果您正在处理此问题，希望对您有所帮助。
根据我的 CIF 测试，我看到颜色是正确的。代码很长，大约有 390 行，很重。包括步骤:构造yTileToMb、uvTileToMb，然后按如下转换y和u/v。
///////////////////////////////////////////////////////////////////////
/**
* Enumeration defining the extended uncompressed image/video
* formats.
*
* ENUMS:
* YVU420PackedSemiPlanar : Buffer containing all Y, and then V and U
* interleaved.
* YVU420PackedSemiPlanar32m4ka : YUV planar format, similar to the
* YVU420PackedSemiPlanar format, but with the
* following restrictions:
*
* 1. The width and height of both plane must
* be a multiple of 32 texels.
*
* 2. The base address of both planes must be
* aligned to a 4kB boundary.
*
* YUV420PackedSemiPlanar16m2ka : YUV planar format, similar to the
* YUV420PackedSemiPlanar format, but with the
* following restrictions:
*
* 1. The width of the luma plane must be a
* multiple of 16 pixels.
*
* 2. The address of both planes must be
* aligned to a 2kB boundary.
*
* YUV420PackedSemiPlanar64x32Tile2m8ka : YUV planar format, similar to the
* YUV420PackedSemiPlanar format, but with the
* following restrictions:
*
* 1. The data is laid out in a 4x2 MB tiling
* memory structure
*
* 2. The width of each plane is a multiple of
* 2 4x2 MB tiles.
*
* 3. The height of each plan is a multiple of
* a 4x2 MB tile.
*
* 4. The base address of both planes must be
* aligned to an 8kB boundary.
*
* 5. The tiles are scanned in the order
* defined in the MFCV5.1 User's Manual.
*
* i.e, CIF size in pysical location
*
* Luma order(4x2 MB = 64x32 pix): 54 tiles:
* 0 1 6 7 8 9
* 2 3 4 5 10 11
* 12 13 18 19 20 21
* 14 15 16 17 22 23
* 24 25 30 31 32 33
* 26 27 28 29 34 35
* 36 37 42 43 44 45
* 38 39 40 41 46 47
* 48 49 50 51 52 53
* MBs in a y tile:
* 0 1 2 3
* 22 23 24 25
* Chromas order(64x32 pix):
* 0 1 6 7 8 9
* 2 3 4 5 10 11
* 12 13 18 19 20 21
* 14 15 16 17 22 23
* 24 25 26 27 28 29
* MBs in a uv tile:
* 0 1 2 3
* 22 23 24 25
* 44 45 46 47
* 66 67 68 69
*
*/
// YUV420PackedSemiPlanar64x32Tile2m8ka, // 12 bit, yyyyyyyy vuvu
// YUV420Planar, 12 bit, yyyyyyyy uu vv
#pragma pack(1)
typedef enum {
Scan_Init = 0,
Scan_Hor,
Scan_VerDown,
Scan_VerUp
} ScanMode;
typedef struct{
uint16_t startMbIndex;
uint8_t numMBs;
// bool lastTileInHor;
bool lastTileInVer;
} MbGroup;
#pragma pack()
#define ALIGN_B(x,a) (((x)+(a)-1) &(~((a)-1)))
#define MAX_RESOLUTION_X 1920 // 4096
#define MAX_RESOLUTION_Y 1088 // 3072
#define MAX_TILES_NUM (((MAX_RESOLUTION_X+63)>>6) * ((MAX_RESOLUTION_Y+31)>>5))
int32_t ToI420::YUV420PackedSemiPlanar64x32Tile2m8kaToYUV420Planar( uint8_t* src, uint8_t* dst_y, uint8_t* dst_u, uint8_t* dst_v,
const int32_t width, const int32_t height,
const int32_t stride_y, const int32_t stride_u, const int32_t stride_v )
{
const int32_t srcStrideY = ALIGN_B( width, 128 );
const int32_t srcHeightY = ALIGN_B( height, 32 );
const int32_t srcStrideUV = srcStrideY; // v/u interlaced
const int32_t srcHeightUV = ALIGN_B( (height>>1), 32 );
const int32_t srcSizeY = ALIGN_B( (srcStrideY * srcHeightY), 8192 );
const int32_t srcSizeUV = ALIGN_B( (srcStrideUV * srcHeightUV), 8192 );
uint8_t* src_y = src;
uint8_t* src_uv = src_y + srcSizeY;
const int32_t wTiles = (width+63)>>6;
const int32_t hTilesY = (height+31)>>5;
const int32_t hTilesUV = (height/2+31)>>5;
const int32_t numTilesY = wTiles*hTilesY;
const int32_t numTilesUV = wTiles*hTilesUV;
const int32_t wMacroblocks = (width+15)>>4;
const int32_t hMacroblocks = (height+15)>>4;
int32_t numMbInTile = 4*2; // y: 4*2; uv: 4*4
const int32_t mbOffsetTileHor = 4;
int32_t mbOffsetTileVer = (wMacroblocks<<1); // y: (wMacroblocks<<1); uv: (wMacroblocks<<2)
MbGroup yTileToMb[MAX_TILES_NUM] = {0}; // each Tile index storing according MB index
MbGroup uvTileToMb[MAX_TILES_NUM] = {0}; // each Tile index storing according MB index
assert( numTilesY <= MAX_TILES_NUM && numTilesUV <= MAX_TILES_NUM );
int32_t availableTilesY = numTilesY;
int32_t availableTilesUV = numTilesUV;
const int32_t numTilesYPerScanUnit = (wTiles<<1);
int32_t tileIndex = 0;
ScanMode preMode = Scan_Init;
ScanMode curMode = Scan_Hor;
int32_t scanedTiles = 0;
int32_t hMbMultiple = 0;
int32_t cntScanTimesInPeriod = 0; // maximal scan times is up to 4
int32_t cnt1stLineTiles = 0;
int32_t cnt2ndLineTiles = 0;
uint16_t mbPosition = 0;
uint16_t lastMbIdx = mbPosition;
uint16_t firstMbIdxUnit = mbPosition;
bool noEnoughMbInTile = false;
// construct yTileToMb table
while( availableTilesY > 0 ){
if ( availableTilesY >= numTilesYPerScanUnit ){
preMode = Scan_Init;
curMode = Scan_Hor;
lastMbIdx = mbPosition;
firstMbIdxUnit = mbPosition;
cntScanTimesInPeriod = 0; // maximal scan times is up to 4
cnt1stLineTiles = 0;
cnt2ndLineTiles = 0;
noEnoughMbInTile = false;
scanedTiles = 0;
while ( scanedTiles < numTilesYPerScanUnit ){
if ( (tileIndex & 3) == 0 ){
firstMbIdxUnit = mbPosition;
}
noEnoughMbInTile = false;
if ( curMode == Scan_Hor ){
if ( (preMode == Scan_VerUp && cnt1stLineTiles+1>= wTiles) ||
(preMode == Scan_VerDown && cnt2ndLineTiles+1>= wTiles) ){
noEnoughMbInTile = (ALIGN_B(width, 16) < srcStrideY);
// yTileToMb[tileIndex].lastTileInHor = true;
}
yTileToMb[tileIndex].startMbIndex = mbPosition;
yTileToMb[tileIndex].numMBs = noEnoughMbInTile ? ((4-((srcStrideY-ALIGN_B(width,16))>>4))<<1) : numMbInTile;
++ tileIndex;
++ cntScanTimesInPeriod;
if ( noEnoughMbInTile && cntScanTimesInPeriod == 1){
if ( preMode == Scan_VerDown ){
preMode = curMode; // scan mode change need upate preMode
curMode = Scan_VerUp;
++ cnt2ndLineTiles;
mbPosition = firstMbIdxUnit - mbOffsetTileVer;
}else if ( preMode == Scan_VerUp ){
preMode = curMode; // scan mode change need upate preMode
curMode = Scan_VerDown;
++ cnt1stLineTiles;
mbPosition = firstMbIdxUnit + mbOffsetTileVer;
}
}else if ( cntScanTimesInPeriod == 2 ){
if ( preMode == Scan_Init || preMode == Scan_VerUp ){
preMode = curMode; // scan mode change need upate preMode
curMode = Scan_VerDown;
++ cnt1stLineTiles;
mbPosition = firstMbIdxUnit + mbOffsetTileVer;
}else if ( preMode == Scan_VerDown ){
preMode = curMode; // scan mode change need upate preMode
curMode = Scan_VerUp;
++ cnt2ndLineTiles;
mbPosition = firstMbIdxUnit - mbOffsetTileVer;
}
}else if ( cntScanTimesInPeriod == 4 ){
if ( preMode == Scan_VerDown ){
++ cnt2ndLineTiles;
mbPosition += mbOffsetTileHor;
}else if ( preMode == Scan_VerUp ){
++ cnt1stLineTiles;
mbPosition += mbOffsetTileHor;
}
}else{
if ( preMode == Scan_Init ){
++ cnt1stLineTiles;
}else if ( preMode == Scan_VerDown ){
++ cnt2ndLineTiles;
}else if ( preMode == Scan_VerUp ){
++ cnt1stLineTiles;
}
if ( cnt2ndLineTiles >= wTiles && preMode == Scan_VerDown ){
preMode = curMode; // scan mode change need upate preMode
curMode = Scan_VerUp;
mbPosition = firstMbIdxUnit - mbOffsetTileVer;
}else if ( cnt1stLineTiles >= wTiles && preMode == Scan_VerUp ){
preMode = curMode; // scan mode change need upate preMode
curMode = Scan_VerDown;
mbPosition = firstMbIdxUnit + mbOffsetTileVer;
}else{
mbPosition += mbOffsetTileHor;
}
}
}else if ( curMode == Scan_VerUp ){
if ( cnt1stLineTiles+1 >= wTiles ){
noEnoughMbInTile = (ALIGN_B(width, 16) < srcStrideY);
// yTileToMb[tileIndex].lastTileInHor = true;
}
yTileToMb[tileIndex].startMbIndex= mbPosition;
yTileToMb[tileIndex].numMBs = noEnoughMbInTile ? ((4-((srcStrideY-ALIGN_B(width,16))>>4))<<1) : numMbInTile;
++ tileIndex;
mbPosition += mbOffsetTileHor;
++ cntScanTimesInPeriod;
++ cnt1stLineTiles;
preMode = curMode; // scan mode change need upate preMode
curMode = Scan_Hor;
}else if ( curMode == Scan_VerDown ){
if ( cnt2ndLineTiles+1 >= wTiles ){
noEnoughMbInTile = (ALIGN_B(width, 16) < srcStrideY);
// yTileToMb[tileIndex].lastTileInHor = true;
}
yTileToMb[tileIndex].startMbIndex= mbPosition;
yTileToMb[tileIndex].numMBs = noEnoughMbInTile ? ((4-((srcStrideY-ALIGN_B(width,16))>>4))<<1) : numMbInTile;
++ tileIndex;
mbPosition += mbOffsetTileHor;
++ cntScanTimesInPeriod;
++ cnt2ndLineTiles;
preMode = curMode; // scan mode change need upate preMode
curMode = Scan_Hor;
}
cntScanTimesInPeriod &= 0x03;
++ scanedTiles;
}
mbPosition = lastMbIdx + (mbOffsetTileVer<<1);
availableTilesY -= numTilesYPerScanUnit;
}else{
scanedTiles = 0;
hMbMultiple = hMacroblocks - (tileIndex/wTiles)*2;
noEnoughMbInTile = false;
while ( scanedTiles < wTiles ){
yTileToMb[tileIndex].startMbIndex = mbPosition;
yTileToMb[tileIndex].lastTileInVer= true;
if ( scanedTiles+1 == wTiles ){
noEnoughMbInTile = (ALIGN_B(width, 16) < srcStrideY);
// yTileToMb[tileIndex].lastTileInHor = true;
}
yTileToMb[tileIndex].numMBs = noEnoughMbInTile ? ((4-((srcStrideY-ALIGN_B(width,16))>>4))*hMbMultiple) : (4*hMbMultiple);
++ tileIndex;
mbPosition += mbOffsetTileHor;
++ scanedTiles;
}
availableTilesY -= wTiles;
}
}
numMbInTile = 4*4;
mbOffsetTileVer = (wMacroblocks<<2);
mbPosition = 0;
tileIndex = 0;
// construct uvTileToMb table
while( availableTilesUV > 0 ){
if ( availableTilesUV >= numTilesYPerScanUnit ){
preMode = Scan_Init;
curMode = Scan_Hor;
lastMbIdx = mbPosition;
firstMbIdxUnit = mbPosition;
cntScanTimesInPeriod= 0; // maximal scan times is up to 4
cnt1stLineTiles = 0;
cnt2ndLineTiles = 0;
noEnoughMbInTile = false;
scanedTiles = 0;
while ( scanedTiles < numTilesYPerScanUnit ){
if ( (tileIndex & 3) == 0 ){
firstMbIdxUnit = mbPosition;
}
noEnoughMbInTile = false;
if ( curMode == Scan_Hor ){
if ( (preMode == Scan_VerUp && cnt1stLineTiles+1>= wTiles) ||
(preMode == Scan_VerDown && cnt2ndLineTiles+1>= wTiles) ){
noEnoughMbInTile = (ALIGN_B(width, 16) < srcStrideY);
// uvTileToMb[tileIndex].lastTileInHor = true;
}
uvTileToMb[tileIndex].startMbIndex = mbPosition;
uvTileToMb[tileIndex].numMBs = noEnoughMbInTile ? ((4-((srcStrideY-ALIGN_B(width,16))>>4))<<2) : numMbInTile;
++ tileIndex;
++ cntScanTimesInPeriod;
if ( noEnoughMbInTile && cntScanTimesInPeriod == 1){
if ( preMode == Scan_VerDown ){
preMode = curMode; // scan mode change need upate preMode
curMode = Scan_VerUp;
++ cnt2ndLineTiles;
mbPosition = firstMbIdxUnit - mbOffsetTileVer;
}else if ( preMode == Scan_VerUp ){
preMode = curMode; // scan mode change need upate preMode
curMode = Scan_VerDown;
++ cnt1stLineTiles;
mbPosition = firstMbIdxUnit + mbOffsetTileVer;
}
}else if ( cntScanTimesInPeriod == 2 ){
if ( preMode == Scan_Init || preMode == Scan_VerUp ){
preMode = curMode; // scan mode change need upate preMode
curMode = Scan_VerDown;
++ cnt1stLineTiles;
mbPosition = firstMbIdxUnit + mbOffsetTileVer;
}else if ( preMode == Scan_VerDown ){
preMode = curMode; // scan mode change need upate preMode
curMode = Scan_VerUp;
++ cnt2ndLineTiles;
mbPosition = firstMbIdxUnit - mbOffsetTileVer;
}
}else if ( cntScanTimesInPeriod == 4 ){
if ( preMode == Scan_VerDown ){
++ cnt2ndLineTiles;
mbPosition += mbOffsetTileHor;
}else if ( preMode == Scan_VerUp ){
++ cnt1stLineTiles;
mbPosition += mbOffsetTileHor;
}
}else{
if ( preMode == Scan_Init ){
++ cnt1stLineTiles;
}else if ( preMode == Scan_VerDown ){
++ cnt2ndLineTiles;
}else if ( preMode == Scan_VerUp ){
++ cnt1stLineTiles;
}
if ( cnt2ndLineTiles >= wTiles && preMode == Scan_VerDown ){
preMode = curMode; // scan mode change need upate preMode
curMode = Scan_VerUp;
mbPosition = firstMbIdxUnit - mbOffsetTileVer;
}else if ( cnt1stLineTiles >= wTiles && preMode == Scan_VerUp ){
preMode = curMode; // scan mode change need upate preMode
curMode = Scan_VerDown;
mbPosition = firstMbIdxUnit + mbOffsetTileVer;
}else{
mbPosition += mbOffsetTileHor;
}
}
}else if ( curMode == Scan_VerUp ){
if ( cnt1stLineTiles+1 >= wTiles ){
noEnoughMbInTile = (ALIGN_B(width, 16) < srcStrideY);
// uvTileToMb[tileIndex].lastTileInHor = true;
}
uvTileToMb[tileIndex].startMbIndex = mbPosition;
uvTileToMb[tileIndex].numMBs = noEnoughMbInTile ? ((4-((srcStrideY-ALIGN_B(width,16))>>4))<<2) : numMbInTile;
++ tileIndex;
mbPosition += mbOffsetTileHor;
++ cntScanTimesInPeriod;
++ cnt1stLineTiles;
preMode = curMode; // scan mode change need upate preMode
curMode = Scan_Hor;
}else if ( curMode == Scan_VerDown ){
if ( cnt2ndLineTiles+1 >= wTiles ){
noEnoughMbInTile = (ALIGN_B(width, 16) < srcStrideY);
// uvTileToMb[tileIndex].lastTileInHor = true;
}
uvTileToMb[tileIndex].startMbIndex = mbPosition;
uvTileToMb[tileIndex].numMBs = noEnoughMbInTile ? ((4-((srcStrideY-ALIGN_B(width,16))>>4))<<2) : numMbInTile;
++ tileIndex;
mbPosition += mbOffsetTileHor;
++ cntScanTimesInPeriod;
++ cnt2ndLineTiles;
preMode = curMode; // scan mode change need upate preMode
curMode = Scan_Hor;
}
cntScanTimesInPeriod &= 0x03;
++ scanedTiles;
}
mbPosition = lastMbIdx + (mbOffsetTileVer<<1);
availableTilesUV -= numTilesYPerScanUnit;
}else{
scanedTiles = 0;
hMbMultiple = hMacroblocks - (tileIndex/wTiles)*4;
noEnoughMbInTile = false;
while ( scanedTiles < wTiles ){
uvTileToMb[tileIndex].startMbIndex = mbPosition;
uvTileToMb[tileIndex].lastTileInVer = true;
if ( scanedTiles+1 == wTiles ){
noEnoughMbInTile = (ALIGN_B(width, 16) < srcStrideY);
// uvTileToMb[tileIndex].lastTileInHor = true;
}
uvTileToMb[tileIndex].numMBs = noEnoughMbInTile ? ((4-((srcStrideY-ALIGN_B(width,16))>>4))*hMbMultiple) : (4*hMbMultiple);
++ tileIndex;
mbPosition += mbOffsetTileHor;
++ scanedTiles;
}
availableTilesUV -= wTiles;
}
}
uint8_t* py = src_y;
tileIndex = 0;
// converting luma componet with yTileToMb
while ( tileIndex < numTilesY ){
uint16_t startMbIndex = yTileToMb[tileIndex].startMbIndex;
const int32_t startMbX = (startMbIndex % wMacroblocks);
const int32_t startMbY = (startMbIndex / wMacroblocks);
int32_t mb_x = startMbX;
int32_t mb_y = startMbY;
const int32_t cntMbLines = yTileToMb[tileIndex].lastTileInVer ? (hMacroblocks - (tileIndex/wTiles)*2) : 2;
const int32_t numMbPerLine = yTileToMb[tileIndex].numMBs / cntMbLines;
const int32_t sizePixelLine = (numMbPerLine << 4);
int32_t mbLine = 0;
while ( mbLine < cntMbLines ){
assert( mb_y < hMacroblocks && mb_x < wMacroblocks );
const int32_t dstOffsetY = (mb_y * stride_y + mb_x)<<4;
int32_t _l = 0;
// luma
while( _l < 16 ){
memcpy( dst_y + dstOffsetY + _l * stride_y, py, sizePixelLine );
py += 64; // eliminate padding (64-sizePixelLine)
++ _l;
}
mb_x = startMbX;
++ mb_y;
++ mbLine;
}
++ tileIndex;
}
uint8_t* puv = src_uv;
tileIndex = 0;
// convering cb/cr componets with uvTileToMb
while ( tileIndex < numTilesUV ){
uint16_t startMbIndex = uvTileToMb[tileIndex].startMbIndex;
const int32_t startMbX = (startMbIndex % wMacroblocks);
const int32_t startMbY = (startMbIndex / wMacroblocks);
int32_t mb_x = startMbX;
int32_t mb_y = startMbY;
const int32_t cntMbLines = uvTileToMb[tileIndex].lastTileInVer ? (hMacroblocks - (tileIndex/wTiles)*4) : 4;
const int32_t numMbPerLine = uvTileToMb[tileIndex].numMBs / cntMbLines;
int32_t mbLine = 0;
while ( mbLine < cntMbLines ){
assert( mb_y < hMacroblocks && mb_x < wMacroblocks );
// cb/cr
int32_t mbIndex = 0;
while ( mbIndex < numMbPerLine ){
assert( mb_y < hMacroblocks && mb_x < wMacroblocks );
const int32_t dstOffsetUV = (mb_y * stride_u + mb_x)<<3;
int32_t _l = 0;
while( _l < 8 ){
const int32_t _offset = dstOffsetUV + _l * stride_u;
uint8_t* _u = dst_u + _offset;
uint8_t* _v = dst_v + _offset;
uint8_t* _src_vu = puv+(mbIndex<<4)+(_l<<6);
int32_t _interlace = 0;
for ( int32_t ichroma = 0; ichroma < 8; ++ichroma ){
_u[ichroma] = _src_vu[_interlace++];
_v[ichroma] = _src_vu[_interlace++];
}
++ _l;
}
++ mb_x;
++ mbIndex;
}
puv += 64*8;
mb_x = startMbX;
++ mb_y;
++ mbLine;
}
if ( cntMbLines < 4 ){
puv += 64*(4-cntMbLines)*8;
}
++ tileIndex;
}
return 0;
}
///////////////////////////////////////////////////////////////////////
关于colors - QOMX_COLOR_FormatYUV420PackedSemiPlanar64x32Tile2m8ka 颜色格式，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/10059738/
26
4
0
有没有办法使用 Clojure format(基于 java.util.Formatter)或 cl-format(基于 Common Lisp 的format) 以编程方式设置空格填充？如果您事先知
我正在尝试创建一个用户实体以及数据/文件(pdf格式)。上传并保存到数据库很好，但是当我让用户进入 postman 时尝试发送获取请求方法，然后在数据字段中显示一些糟糕的数据，而且我无法在数据库中看到
我必须将值为 {"STX","ETX"} 的普通字符串数组转换为十六进制值，并且我应该根据 http://www.asciitable.com/ 得到 {2,3} . 最佳答案 听起来你想要一个 Ma
我想格式化我的代码，但不确定哪种格式类型最适合我的项目需要。 我发现仅对于 dart 和 flutter 项目(我都有)，有不止一个选项可用于格式化编程语言/框架中预先构建的代码。 Dart : da
我已经尝试了多个代码，例如这样 Sub DateFixer() Application.ScreenUpdating = False Application.Calculation =
SolrQuery query = new SolrQuery(); query.setQuery("*:*"); query.add("wt","csv"); server.query(query)
我有一个包含多个字符串的数据库，我从查询中获取了这些记录，并且我在 QString 中收到了这种格式的数据: "Mon, 13 Nov 2017 09:48:45 +0000" 所以，我需要根据文化来
我有一个 Delphi 2007 DBGrid，我想让用户以更新的 Excel 格式 (OOXML) 保存它，但我的标准是用户不需要安装 Excel。有没有人知道任何已经这样做的组件？是的，我已经搜索
我正在我们的普通 html 站点旁边创建一个移动站点。使用 rails 3.1。移动站点在子域 m.site.com 中访问。 我已经定义了移动格式(Mime::Type.register_alias
我正在尝试使用 xmlstarlet 格式化 xml 文件，但我不想创建新的 xml 文件。 我试过了 xmlstarlet fo --inplace --indent-tab --omit-decl
我在 A 列中有一个带有文本的电子表格。 例如 A1=MY TEXT1 A2=MY TEXT2 A3=MY TEXT3 A4=MY TEXT4 A5=MY TEXT5 我想在文本的前后添加撇号 结果是
我想做一些源代码转换(自动导入列表清理)，我想保留注释和格式。我听说过一些关于解析器这样做的事情，我认为是 ghc 解析器。 看起来我可以通过从文件中提取内容来使用 hs-src-exts Langu
我在 Excel 中工作，我想根据另一张表中的列表找出一张表中是否有匹配项。 我已将值粘贴到列表中，并希望从另一张表中返回它们的相应值。包含字母和数字的单元格可以正常工作(例如:D5765000)，但
我有一个 DurationField在我的模型中定义为 day0 = models.DurationField('Duration for Monday', default=datetime.time
我正在为我的应用程序开发 WMI 查询。它需要为给定的 VID/PID 找到分配的虚拟 COM 端口。使用 WMI Code Creator 我发现...... 命名空间:root\CIMV2 类:W
我试图弄清楚如何使用 NSTextList，但除了 this SO question 之外，在网上几乎没有找到有用的信息。和 the comment in this blog . 使用这个我已经能够创
我要查询all_objects表在哪里last_ddl_time='01 jan 2010'但它拒绝日期格式... 任何机构给我查询的确切格式？ 最佳答案 正如 AKF 所说，您应该使用 Trunc除
我试图在我的应用程序中实现聊天功能。我使用了 2 个 JEditorPane。一个用于保存聊天记录，另一个用于将聊天发送到前一个 JEditorPane。 JEditorPane 是 text/h
我在大学里修了一个编译器类(class)，内容非常丰富，很有趣，尽管也很多工作。既然给了我们要实现的语言规范，所以我学不到的一件事就是语言设计。我现在正在考虑创建一种有趣的简单玩具语言，以便我可以玩耍
Closed. This question does not meet Stack Overflow guidelines。它当前不接受答案。 想改善这个问题吗？更新问题，以便将其作为on-topic
我是一名优秀的程序员,十分优秀！