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C# NPPImage_8uC1.Dispose方法代码示例

本文整理汇总了C#中ManagedCuda.NPP.NPPImage_8uC1.Dispose方法的典型用法代码示例。如果您正苦于以下问题:C# NPPImage_8uC1.Dispose方法的具体用法?C# NPPImage_8uC1.Dispose怎么用?C# NPPImage_8uC1.Dispose使用的例子?那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在ManagedCuda.NPP.NPPImage_8uC1的用法示例。


在下文中一共展示了NPPImage_8uC1.Dispose方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C#代码示例。

示例1: SaveJpeg


//.........这里部分代码省略.........
                nMCUBlocksH = Math.Max(nMCUBlocksH, oFrameHeader.aSamplingFactors[i] & 0x0f);
            }

            for (int i = 0; i < oFrameHeader.nComponents; ++i)
            {
                NppiSize oBlocks = new NppiSize();
                NppiSize oBlocksPerMCU = new NppiSize(oFrameHeader.aSamplingFactors[i] & 0x0f, oFrameHeader.aSamplingFactors[i] >> 4);

                oBlocks.width = (int)Math.Ceiling((oFrameHeader.nWidth + 7) / 8 *
                                          (float)(oBlocksPerMCU.width) / nMCUBlocksH);
                oBlocks.width = DivUp(oBlocks.width, oBlocksPerMCU.width) * oBlocksPerMCU.width;

                oBlocks.height = (int)Math.Ceiling((oFrameHeader.nHeight + 7) / 8 *
                                           (float)(oBlocksPerMCU.height) / nMCUBlocksV);
                oBlocks.height = DivUp(oBlocks.height, oBlocksPerMCU.height) * oBlocksPerMCU.height;

                // Allocate Memory
                apdDCT[i] = new NPPImage_16sC1(oBlocks.width * 64, oBlocks.height);

            }

            /***************************
            *
            *   Output
            *
            ***************************/

            // Forward DCT
            for (int i = 0; i < 3; ++i)
            {
                compression.DCTQuantFwd8x8LS(apDstImage[i], apdDCT[i], aDstSize[i], pdQuantizationTables[oFrameHeader.aQuantizationTableSelector[i]]);
            }

            // Huffman Encoding
            CudaDeviceVariable<byte> pdScan = new CudaDeviceVariable<byte>(BUFFER_SIZE);
            int nScanLength = 0;

            int nTempSize = JPEGCompression.EncodeHuffmanGetSize(aDstSize[0], 3);
            CudaDeviceVariable<byte> pJpegEncoderTemp = new CudaDeviceVariable<byte>(nTempSize);

            NppiEncodeHuffmanSpec[] apHuffmanDCTableEnc = new NppiEncodeHuffmanSpec[3];
            NppiEncodeHuffmanSpec[] apHuffmanACTableEnc = new NppiEncodeHuffmanSpec[3];

            for (int i = 0; i < 3; ++i)
            {
                apHuffmanDCTableEnc[i] = JPEGCompression.EncodeHuffmanSpecInitAlloc(aHuffmanTables[(oScanHeader.aHuffmanTablesSelector[i] >> 4)].aCodes, NppiHuffmanTableType.nppiDCTable);
                apHuffmanACTableEnc[i] = JPEGCompression.EncodeHuffmanSpecInitAlloc(aHuffmanTables[(oScanHeader.aHuffmanTablesSelector[i] & 0x0f) + 2].aCodes, NppiHuffmanTableType.nppiACTable);
            }

            JPEGCompression.EncodeHuffmanScan(apdDCT, 0, oScanHeader.nSs, oScanHeader.nSe, oScanHeader.nA >> 4, oScanHeader.nA & 0x0f, pdScan, ref nScanLength, apHuffmanDCTableEnc, apHuffmanACTableEnc, aDstSize, pJpegEncoderTemp);

            for (int i = 0; i < 3; ++i)
            {
                JPEGCompression.EncodeHuffmanSpecFree(apHuffmanDCTableEnc[i]);
                JPEGCompression.EncodeHuffmanSpecFree(apHuffmanACTableEnc[i]);
            }

            // Write JPEG to byte array, as in original sample code
            byte[] pDstOutput = new byte[BUFFER_SIZE];
            int pos = 0;

            oFrameHeader.nWidth = (ushort)oDstImageSize.width;
            oFrameHeader.nHeight = (ushort)oDstImageSize.height;

            writeMarker(0x0D8, pDstOutput, ref pos);
            writeJFIFTag(pDstOutput, ref pos);
            writeQuantizationTable(aQuantizationTables[0], pDstOutput, ref pos);
            writeQuantizationTable(aQuantizationTables[1], pDstOutput, ref pos);
            writeFrameHeader(oFrameHeader, pDstOutput, ref pos);
            writeHuffmanTable(aHuffmanTables[0], pDstOutput, ref pos);
            writeHuffmanTable(aHuffmanTables[1], pDstOutput, ref pos);
            writeHuffmanTable(aHuffmanTables[2], pDstOutput, ref pos);
            writeHuffmanTable(aHuffmanTables[3], pDstOutput, ref pos);
            writeScanHeader(oScanHeader, pDstOutput, ref pos);

            pdScan.CopyToHost(pDstOutput, 0, pos, nScanLength);

            pos += nScanLength;
            writeMarker(0x0D9, pDstOutput, ref pos);

            FileStream fs = new FileStream(aFilename, FileMode.Create, FileAccess.Write);
            fs.Write(pDstOutput, 0, pos);
            fs.Close();

            //cleanup:
            fs.Dispose();
            pJpegEncoderTemp.Dispose();
            pdScan.Dispose();
            apdDCT[2].Dispose();
            apdDCT[1].Dispose();
            apdDCT[0].Dispose();
            pdQuantizationTables[1].Dispose();
            pdQuantizationTables[0].Dispose();

            srcCr.Dispose();
            srcCb.Dispose();
            srcY.Dispose();
            src.Dispose();
            compression.Dispose();
        }
开发者ID:kunzmi,项目名称:managedCuda,代码行数:101,代码来源:JpegNPP.cs


注:本文中的ManagedCuda.NPP.NPPImage_8uC1.Dispose方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。