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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/***************************************************************************
* libdv_wrapper.cc
*
* Mon Apr 10 11:20:18 CEST 2006
* Copyright 2006 Bent Bisballe Nyeng
* deva@aasimon.org
****************************************************************************/
/*
* This file is part of MIaV.
*
* MIaV 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.
*
* MIaV 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 MIaV; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#include "libdv_wrapper.h"
//#define COLORSPACE_YV12
LibDVWrapper::LibDVWrapper(DV::Quality quality,
DV::System system,
DV::Sampling sampling)
{
decoder = dv_decoder_new(FALSE, // int ignored
FALSE, // int clamp_luma
FALSE);// int clamp_chroma
setQuality(quality);
setSystem(system);
setSampling(sampling);
yuv[0] = yuv[1] = yuv[2] = NULL;
width = 720;
height = 576;
first = true;
}
LibDVWrapper::~LibDVWrapper()
{
dv_decoder_free(decoder);
}
void LibDVWrapper::setQuality(DV::Quality quality)
{
dv_set_quality(decoder, quality);
}
void LibDVWrapper::setSystem(DV::System system)
{
decoder->system = (dv_system_t)system;
}
void LibDVWrapper::setSampling(DV::Sampling sampling)
{
decoder->sampling = (dv_sample_t)sampling;
}
void LibDVWrapper::setOutputBuffer(char *output, DV::ColorSpace c)
{
colorspace = c;
switch(colorspace) {
case DV::YUV:
#ifdef COLORSPACE_YV12
yuv[0] = (unsigned char*)output;
yuv[1] = (unsigned char*)yuv[0] + (width * height);
yuv[2] = (unsigned char*)yuv[1] + (width * height / 4);
pitches[0] = width;
pitches[1] = width / 2;
pitches[2] = width / 2;
#else
yuv[0] = (unsigned char*)output;
pitches[0] = width * 2;
#endif
break;
case DV::RGB:
yuv[0] = (unsigned char*)output;
yuv[1] = yuv[2] = NULL;
pitches[0] = width * 3;
break;
case DV::BGR0:
yuv[0] = (unsigned char*)output;
yuv[1] = yuv[2] = NULL;
pitches[0] = width * 4;
break;
}
}
void LibDVWrapper::decode(char *input)
{
if(!yuv[0]) return; // outputbuffer not set!
if(first) {
dv_parse_header(decoder, (const uint8_t*)input);
//dv_parse_packs(decoder, frame->data); // Not needed anyway!
decoder->std = e_dv_std_iec_61834;
decoder->num_dif_seqs = 12;
first = false;
}
dv_decode_full_frame(decoder,
(const uint8_t*)input,
(dv_color_space_t)colorspace,
yuv,
pitches);
}
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