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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.
*****************************************************************************/
#define _FILE_OFFSET_BITS 64
#define _LARGEFILE_SOURCE
#include "yuv.h"
#include "common.h"
#include <iostream>
#define ENABLE_THREADING 1
#if _WIN32
#include <io.h>
#include <fcntl.h>
#if defined(_MSC_VER)
#pragma warning(disable: 4996) // POSIX setmode and fileno deprecated
#endif
#endif
using namespace X265_NS;
using namespace std;
YUVInput::YUVInput(InputFileInfo& info, bool alpha, int format)
{
for (int i = 0; i < QUEUE_SIZE; i++)
buf[i] = NULL;
depth = info.depth;
width = info.width;
height = info.height;
colorSpace = info.csp;
alphaAvailable = alpha;
threadActive = false;
ifs = NULL;
uint32_t pixelbytes = depth > 8 ? 2 : 1;
framesize = 0;
for (int i = 0; i < x265_cli_csps[colorSpace].planes + alphaAvailable; i++)
{
int32_t w = (width * (format == 1 ? 2 : 1)) >> x265_cli_csps[colorSpace].width[i];
uint32_t h = (height * (format == 2 ? 2 : 1)) >> x265_cli_csps[colorSpace].height[i];
framesize += w * h * pixelbytes;
}
if (width == 0 || height == 0 || info.fpsNum == 0 || info.fpsDenom == 0)
{
x265_log(NULL, X265_LOG_ERROR, "yuv: width, height, and FPS must be specified\n");
return;
}
if (!strcmp(info.filename, "-"))
{
ifs = stdin;
#if _WIN32
setmode(fileno(stdin), O_BINARY);
#endif
}
else
ifs = x265_fopen(info.filename, "rb");
if (ifs && !ferror(ifs))
threadActive = true;
else
{
if (ifs && ifs != stdin)
fclose(ifs);
ifs = NULL;
return;
}
for (uint32_t i = 0; i < QUEUE_SIZE; i++)
{
buf[i] = X265_MALLOC(char, framesize);
if (buf[i] == NULL)
{
x265_log(NULL, X265_LOG_ERROR, "yuv: buffer allocation failure, aborting\n");
threadActive = false;
return;
}
}
info.frameCount = -1;
/* try to estimate frame count, if this is not stdin */
if (ifs != stdin)
{
int64_t cur = ftello(ifs);
if (cur >= 0)
{
fseeko(ifs, 0, SEEK_END);
int64_t size = ftello(ifs);
fseeko(ifs, cur, SEEK_SET);
if (size > 0)
info.frameCount = (int)((size - cur) / framesize);
}
}
if (info.skipFrames)
{
if (ifs != stdin)
fseeko(ifs, (int64_t)framesize * info.skipFrames, SEEK_CUR);
else
for (int i = 0; i < info.skipFrames; i++)
if (fread(buf[0], framesize, 1, ifs) != 1)
break;
}
}
YUVInput::~YUVInput()
{
if (ifs && ifs != stdin)
fclose(ifs);
for (int i = 0; i < QUEUE_SIZE; i++)
X265_FREE(buf[i]);
}
void YUVInput::release()
{
threadActive = false;
readCount.poke();
stop();
delete this;
}
void YUVInput::startReader()
{
#if ENABLE_THREADING
if (threadActive)
start();
#endif
}
void YUVInput::threadMain()
{
THREAD_NAME("YUVRead", 0);
while (threadActive)
{
if (!populateFrameQueue())
break;
}
threadActive = false;
writeCount.poke();
}
bool YUVInput::populateFrameQueue()
{
if (!ifs || ferror(ifs))
return false;
/* wait for room in the ring buffer */
int written = writeCount.get();
int read = readCount.get();
while (written - read > QUEUE_SIZE - 2)
{
read = readCount.waitForChange(read);
if (!threadActive)
// release() has been called
return false;
}
ProfileScopeEvent(frameRead);
if (fread(buf[written % QUEUE_SIZE], framesize, 1, ifs) == 1)
{
writeCount.incr();
return true;
}
else
return false;
}
bool YUVInput::readPicture(x265_picture& pic)
{
int read = readCount.get();
int written = writeCount.get();
#if ENABLE_THREADING
/* only wait if the read thread is still active */
while (threadActive && read == written)
written = writeCount.waitForChange(written);
#else
populateFrameQueue();
#endif // if ENABLE_THREADING
if (read < written)
{
uint32_t pixelbytes = depth > 8 ? 2 : 1;
pic.colorSpace = colorSpace;
pic.bitDepth = depth;
pic.framesize = framesize;
pic.height = height;
pic.width = width;
pic.stride[0] = width * pixelbytes * (pic.format == 1 ? 2 : 1);
pic.stride[1] = pic.stride[0] >> x265_cli_csps[colorSpace].width[1];
pic.stride[2] = pic.stride[0] >> x265_cli_csps[colorSpace].width[2];
pic.planes[0] = buf[read % QUEUE_SIZE];
pic.planes[1] = (char*)pic.planes[0] + pic.stride[0] * (height * (pic.format == 2 ? 2 : 1));
pic.planes[2] = (char*)pic.planes[1] + pic.stride[1] * ((height * (pic.format == 2 ? 2 : 1)) >> x265_cli_csps[colorSpace].height[1]);
#if ENABLE_ALPHA
if (alphaAvailable)
{
pic.stride[3] = pic.stride[0] >> x265_cli_csps[colorSpace].width[3];
pic.planes[3] = (char*)pic.planes[2] + pic.stride[2] * (height >> x265_cli_csps[colorSpace].height[2]);
}
#endif
readCount.incr();
return true;
}
else
return false;
}
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