109 lines
3.6 KiB
C++
109 lines
3.6 KiB
C++
/*****************************************************************************
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* Copyright (C) 2013 x265 project
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*
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* Authors: Steve Borho <steve@borho.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
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*
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* This program is also available under a commercial proprietary license.
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* For more information, contact us at license @ x265.com.
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*****************************************************************************/
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#include "common.h"
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#include "output.h"
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#include "y4m.h"
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using namespace X265_NS;
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using namespace std;
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Y4MOutput::Y4MOutput(const char *filename, int w, int h, uint32_t fpsNum, uint32_t fpsDenom, int csp)
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: width(w)
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, height(h)
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, colorSpace(csp)
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, frameSize(0)
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{
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ofs.open(filename, ios::binary | ios::out);
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buf = new char[width];
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const char *cf = (csp >= X265_CSP_I444) ? "444" : (csp >= X265_CSP_I422) ? "422" : "420";
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if (ofs)
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{
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ofs << "YUV4MPEG2 W" << width << " H" << height << " F" << fpsNum << ":" << fpsDenom << " Ip" << " C" << cf << "\n";
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header = ofs.tellp();
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}
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for (int i = 0; i < x265_cli_csps[colorSpace].planes; i++)
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frameSize += (uint32_t)((width >> x265_cli_csps[colorSpace].width[i]) * (height >> x265_cli_csps[colorSpace].height[i]));
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}
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Y4MOutput::~Y4MOutput()
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{
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ofs.close();
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delete [] buf;
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}
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bool Y4MOutput::writePicture(const x265_picture& pic)
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{
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std::ofstream::pos_type outPicPos = header;
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outPicPos += (uint64_t)pic.poc * (6 + frameSize);
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ofs.seekp(outPicPos);
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ofs << "FRAME\n";
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#if HIGH_BIT_DEPTH
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if (pic.bitDepth > 8 && pic.poc == 0)
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x265_log(NULL, X265_LOG_WARNING, "y4m: down-shifting reconstructed pixels to 8 bits\n");
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#else
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if (pic.bitDepth > 8 && pic.poc == 0)
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x265_log(NULL, X265_LOG_WARNING, "y4m: forcing reconstructed pixels to 8 bits\n");
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#endif
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X265_CHECK(pic.colorSpace == colorSpace, "invalid color space\n");
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#if HIGH_BIT_DEPTH
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// encoder gave us short pixels, downshift, then write
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X265_CHECK(pic.bitDepth > 8, "invalid bit depth\n");
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int shift = pic.bitDepth - 8;
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for (int i = 0; i < x265_cli_csps[colorSpace].planes; i++)
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{
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uint16_t *src = (uint16_t*)pic.planes[i];
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for (int h = 0; h < height >> x265_cli_csps[colorSpace].height[i]; h++)
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{
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for (int w = 0; w < width >> x265_cli_csps[colorSpace].width[i]; w++)
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buf[w] = (char)(src[w] >> shift);
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ofs.write(buf, width >> x265_cli_csps[colorSpace].width[i]);
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src += pic.stride[i] / sizeof(*src);
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}
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}
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#else // if HIGH_BIT_DEPTH
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X265_CHECK(pic.bitDepth == 8, "invalid bit depth\n");
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for (int i = 0; i < x265_cli_csps[colorSpace].planes; i++)
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{
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char *src = (char*)pic.planes[i];
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for (int h = 0; h < height >> x265_cli_csps[colorSpace].height[i]; h++)
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{
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ofs.write(src, width >> x265_cli_csps[colorSpace].width[i]);
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src += pic.stride[i] / sizeof(*src);
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}
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}
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#endif // if HIGH_BIT_DEPTH
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return true;
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}
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