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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;
pitches[0] = pitches[1] = pitches[2] = 0;
width = 720;
height = 576;
// first = true;
// TESTING
// decoder->std = e_dv_std_smpte_314m;//e_dv_std_iec_61834;
decoder->num_dif_seqs = 12; // DIF sequences per frame (12 does the trick)
}
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;
}
Frame *LibDVWrapper::decode(Frame *input, DV::ColorSpace c)
{
if(input->vformat != VF_DV) {
fprintf(stderr, "Wrong format in LibDVWrapper, expected VF_DV, got: %i\n", input->vformat);
return NULL;
}
/*
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;
}
*/
int size = 0;
char* buf = NULL;
int type = VF_NONE;
DV::ColorSpace colorspace = c;
switch(colorspace) {
case DV::YUV:
#ifdef COLORSPACE_YV12
size = width*height*2;
buf = (char*)malloc(size);
type = VF_YV12;
yuv[0] = (unsigned char*)buf;
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
printf("!\n");
size = width*height*2;
buf = (char*)malloc(size);
type = VF_YUV422;
yuv[0] = (unsigned char*)buf;
yuv[1] = yuv[2] = NULL;
pitches[0] = width * 2;
pitches[1] = pitches[2] = 0;
#endif
break;
case DV::RGB:
size = width*height*3;
buf = (char*)malloc(size);
type = VF_RGB;
yuv[0] = (unsigned char*)buf;
yuv[1] = yuv[2] = NULL;
pitches[0] = width * 3;
pitches[1] = pitches[2] = 0;
break;
case DV::BGR0:
size = width*height*4;
buf = (char*)malloc(size);
type = VF_BRG0;
yuv[0] = (unsigned char*)buf;
yuv[1] = yuv[2] = NULL;
pitches[0] = width * 4;
pitches[1] = pitches[2] = 0;
break;
}
dv_decode_full_frame(decoder,
(const uint8_t*)input,
(dv_color_space_t)colorspace,
yuv,
pitches);
// memset(buf, 1, width*height);
// memset(buf+width*height, 100, width*height/2);
// memset(buf+width*height+width*height/2, 200, width*height/2);
Frame *frame = new Frame(buf, size, type, NULL, 0, AF_NONE);
return frame;
}
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