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libbpg-0.9.6

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King_DuckZ 2015-10-27 11:46:00 +01:00
parent 3035b41edf
commit 35a8402710
248 changed files with 232891 additions and 100 deletions
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x265/source/input/yuv.cpp Normal file
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/*****************************************************************************
* Copyright (C) 2013 x265 project
*
* 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 "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)
{
for (int i = 0; i < QUEUE_SIZE; i++)
buf[i] = NULL;
depth = info.depth;
width = info.width;
height = info.height;
colorSpace = info.csp;
threadActive = false;
ifs = NULL;
uint32_t pixelbytes = depth > 8 ? 2 : 1;
framesize = 0;
for (int i = 0; i < x265_cli_csps[colorSpace].planes; i++)
{
uint32_t w = width >> x265_cli_csps[colorSpace].width[i];
uint32_t h = height >> 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 = &cin;
#if _WIN32
setmode(fileno(stdin), O_BINARY);
#endif
}
else
ifs = new ifstream(info.filename, ios::binary | ios::in);
if (ifs && ifs->good())
threadActive = true;
else
{
if (ifs && ifs != &cin)
delete 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 != &cin)
{
istream::pos_type cur = ifs->tellg();
#if defined(_MSC_VER) && _MSC_VER < 1700
/* Older MSVC versions cannot handle 64bit file sizes properly, so go native */
HANDLE hFile = CreateFileA(info.filename, GENERIC_READ,
FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL, NULL);
if (hFile != INVALID_HANDLE_VALUE)
{
LARGE_INTEGER size;
if (GetFileSizeEx(hFile, &size))
info.frameCount = (int)((size.QuadPart - (int64_t)cur) / framesize);
CloseHandle(hFile);
}
#else // if defined(_MSC_VER) && _MSC_VER < 1700
if (cur >= 0)
{
ifs->seekg(0, ios::end);
istream::pos_type size = ifs->tellg();
ifs->seekg(cur, ios::beg);
if (size > 0)
info.frameCount = (int)((size - cur) / framesize);
}
#endif // if defined(_MSC_VER) && _MSC_VER < 1700
}
if (info.skipFrames)
{
#if X86_64
ifs->seekg((uint64_t)framesize * info.skipFrames, ios::cur);
#else
for (int i = 0; i < info.skipFrames; i++)
ifs->ignore(framesize);
#endif
}
}
YUVInput::~YUVInput()
{
if (ifs && ifs != &cin)
delete 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 || ifs->fail())
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);
ifs->read(buf[written % QUEUE_SIZE], framesize);
if (ifs->good())
{
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.stride[0] = width * pixelbytes;
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.planes[2] = (char*)pic.planes[1] + pic.stride[1] * (height >> x265_cli_csps[colorSpace].height[1]);
readCount.incr();
return true;
}
else
return false;
}