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/*
* Copyright (C) 2001 Kawamata/Hitoshi <hitoshi.kawamata@nifty.ne.jp>
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <config.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <mpegconsts.h>
#include "yuvfilters.h"
DEFINE_STD_YFTASKCLASS(yuvstdin);
static const char *
do_usage(void)
{
return "";
}
static YfTaskCore_t *
do_init(int argc, char **argv, const YfTaskCore_t *h0)
{
int framebytes;
YfTaskCore_t *h;
y4m_stream_info_t si;
--argc; ++argv;
h = NULL;
y4m_init_stream_info(&si);
if (y4m_read_stream_header(0, &si) != Y4M_OK)
goto FINI_SI;
framebytes = FRAMEBYTES(y4m_si_get_chroma(&si), y4m_si_get_width(&si), y4m_si_get_height(&si));
h = YfAllocateTask(&yuvstdin, sizeof *h + framebytes, h0);
if (!h)
goto FINI_SI;
y4m_copy_stream_info(&h->si, &si);
h->width = y4m_si_get_width(&si);
h->height = y4m_si_get_height(&si);
h->fpscode = mpeg_framerate_code(y4m_si_get_framerate(&si));
FINI_SI:
y4m_fini_stream_info(&si);
return h;
}
static void
do_fini(YfTaskCore_t *handle)
{
YfFreeTask(handle);
}
static int
do_frame(YfTaskCore_t *handle, const YfTaskCore_t *h0, const YfFrame_t * frame)
{
YfTaskCore_t *h = handle;
YfFrame_t *f = (YfFrame_t *)(h + 1);
int ret;
unsigned char * yuv[3];
YfInitFrame(f, h);
yuv[0] = f->data;
yuv[1] = yuv[0] + (h->width * h->height);
yuv[2] = yuv[1] + ((h->width / CWDIV(y4m_si_get_chroma(&h->si))) *
(h->height / CHDIV(y4m_si_get_chroma(&h->si))));
while ((ret = y4m_read_frame(0, &h->si, &f->fi, yuv)) == Y4M_OK) {
if ((ret = YfPutFrame(h, f)) != Y4M_OK)
break;
}
YfFiniFrame(f);
return ret;
}
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