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/*****************************************************************************
* Copyright (C) 2013-2020 MulticoreWare, Inc
*
* Authors: Steve Borho <steve@borho.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
*
* This program is also available under a commercial proprietary license.
* For more information, contact us at license @ x265.com.
*****************************************************************************/
#include "common.h"
#include "output.h"
#include "y4m.h"
using namespace X265_NS;
using namespace std;
Y4MOutput::Y4MOutput(const char* filename, int w, int h, uint32_t bitdepth, uint32_t fpsNum, uint32_t fpsDenom, int csp, int inputdepth)
: width(w)
, height(h)
, bitDepth(bitdepth)
, colorSpace(csp)
, frameSize(0)
, inputDepth(inputdepth)
{
ofs.open(filename, ios::binary | ios::out);
buf = new char[width];
const char *cf = (csp >= X265_CSP_I444) ? "444" : (csp >= X265_CSP_I422) ? "422" : "420";
if (ofs)
{
if (bitDepth == 10)
ofs << "YUV4MPEG2 W" << width << " H" << height << " F" << fpsNum << ":" << fpsDenom << " Ip" << " C" << cf << "p10" << " XYSCSS = " << cf << "P10" << "\n";
else if (bitDepth == 12)
ofs << "YUV4MPEG2 W" << width << " H" << height << " F" << fpsNum << ":" << fpsDenom << " Ip" << " C" << cf << "p12" << " XYSCSS = " << cf << "P12" << "\n";
else
ofs << "YUV4MPEG2 W" << width << " H" << height << " F" << fpsNum << ":" << fpsDenom << " Ip" << " C" << cf << "\n";
header = ofs.tellp();
}
for (int i = 0; i < x265_cli_csps[colorSpace].planes; i++)
frameSize += (uint32_t)((width >> x265_cli_csps[colorSpace].width[i]) * (height >> x265_cli_csps[colorSpace].height[i]));
}
Y4MOutput::~Y4MOutput()
{
ofs.close();
delete [] buf;
}
bool Y4MOutput::writePicture(const x265_picture& pic)
{
std::ofstream::pos_type outPicPos = header;
if (pic.bitDepth > 8)
outPicPos += (uint64_t)(pic.poc * (6 + frameSize * 2));
else
outPicPos += (uint64_t)pic.poc * (6 + frameSize);
ofs.seekp(outPicPos);
ofs << "FRAME\n";
if (inputDepth > 8)
{
if (pic.bitDepth == 8 && pic.poc == 0)
x265_log(NULL, X265_LOG_WARNING, "y4m: down-shifting reconstructed pixels to 8 bits\n");
}
X265_CHECK(pic.colorSpace == colorSpace, "invalid chroma subsampling\n");
if (inputDepth > 8)//if HIGH_BIT_DEPTH
{
if (pic.bitDepth == 8)
{
// encoder gave us short pixels, downshift, then write
X265_CHECK(pic.bitDepth == 8, "invalid bit depth\n");
int shift = pic.bitDepth - 8;
for (int i = 0; i < x265_cli_csps[colorSpace].planes; i++)
{
char *src = (char*)pic.planes[i];
for (int h = 0; h < height >> x265_cli_csps[colorSpace].height[i]; h++)
{
for (int w = 0; w < width >> x265_cli_csps[colorSpace].width[i]; w++)
buf[w] = (char)(src[w] >> shift);
ofs.write(buf, width >> x265_cli_csps[colorSpace].width[i]);
src += pic.stride[i] / sizeof(*src);
}
}
}
else
{
X265_CHECK(pic.bitDepth > 8, "invalid bit depth\n");
for (int i = 0; i < x265_cli_csps[colorSpace].planes; i++)
{
uint16_t *src = (uint16_t*)pic.planes[i];
for (int h = 0; h < (height * 1) >> x265_cli_csps[colorSpace].height[i]; h++)
{
ofs.write((const char*)src, (width * 2) >> x265_cli_csps[colorSpace].width[i]);
src += pic.stride[i] / sizeof(*src);
}
}
}
}
else if (inputDepth == 8 && pic.bitDepth > 8)
{
X265_CHECK(pic.bitDepth > 8, "invalid bit depth\n");
for (int i = 0; i < x265_cli_csps[colorSpace].planes; i++)
{
uint16_t* src = (uint16_t*)pic.planes[i];
for (int h = 0; h < (height * 1) >> x265_cli_csps[colorSpace].height[i]; h++)
{
ofs.write((const char*)src, (width * 2) >> x265_cli_csps[colorSpace].width[i]);
src += pic.stride[i] / sizeof(*src);
}
}
}
else
{
X265_CHECK(pic.bitDepth == 8, "invalid bit depth\n");
for (int i = 0; i < x265_cli_csps[colorSpace].planes; i++)
{
char *src = (char*)pic.planes[i];
for (int h = 0; h < height >> x265_cli_csps[colorSpace].height[i]; h++)
{
ofs.write(src, width >> x265_cli_csps[colorSpace].width[i]);
src += pic.stride[i] / sizeof(*src);
}
}
}
return true;
}
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