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/*****************************************************************
* gmerlin-avdecoder - a general purpose multimedia decoding library
*
* Copyright (c) 2001 - 2012 Members of the Gmerlin project
* gmerlin-general@lists.sourceforge.net
* http://gmerlin.sourceforge.net
*
* 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, see <http://www.gnu.org/licenses/>.
* *****************************************************************/
#include <string.h>
#include <stdlib.h>
#include <avdec_private.h>
#include <stdio.h>
#include <qt.h>
/*
typedef struct
{
qt_atom_header_t h;
qt_mdia_t mdia;
} qt_trak_t;
*/
int bgav_qt_trak_read(qt_atom_header_t * h, bgav_input_context_t * input,
qt_trak_t * ret)
{
qt_atom_header_t ch; /* Child header */
memcpy(&ret->h, h, sizeof(*h));
while(input->position < h->start_position + h->size)
{
if(!bgav_qt_atom_read_header(input, &ch))
return 0;
switch(ch.fourcc)
{
case BGAV_MK_FOURCC('m', 'd', 'i', 'a'):
if(!bgav_qt_mdia_read(&ch, input, &ret->mdia))
return 0;
break;
case BGAV_MK_FOURCC('t', 'k', 'h', 'd'):
if(!bgav_qt_tkhd_read(&ch, input, &ret->tkhd))
return 0;
break;
case BGAV_MK_FOURCC('u', 'd', 't', 'a'):
if(!bgav_qt_udta_read(&ch, input, &ret->udta))
return 0;
ret->has_udta = 1;
break;
case BGAV_MK_FOURCC('e', 'd', 't', 's'):
if(!bgav_qt_edts_read(&ch, input, &ret->edts))
return 0;
ret->has_edts = 1;
break;
case BGAV_MK_FOURCC('t', 'r', 'e', 'f'):
if(!bgav_qt_tref_read(&ch, input, &ret->tref))
return 0;
ret->has_tref = 1;
break;
default:
bgav_qt_atom_skip_unknown(input, &ch,h->fourcc);
break;
}
}
bgav_qt_stsd_finalize(&ret->mdia.minf.stbl.stsd, ret, input->opt);
return 1;
}
void bgav_qt_trak_free(qt_trak_t * c)
{
bgav_qt_mdia_free(&c->mdia);
bgav_qt_udta_free(&c->udta);
if(c->has_edts)
bgav_qt_edts_free(&c->edts);
if(c->has_tref)
bgav_qt_tref_free(&c->tref);
}
void bgav_qt_trak_dump(int indent, qt_trak_t * c)
{
bgav_diprintf(indent, "trak\n");
bgav_qt_tkhd_dump(indent+2, &c->tkhd);
bgav_qt_mdia_dump(indent+2, &c->mdia);
if(c->has_udta)
bgav_qt_udta_dump(indent+2, &c->udta);
if(c->has_edts)
bgav_qt_edts_dump(indent+2, &c->edts);
if(c->has_tref)
bgav_qt_tref_dump(indent+2, &c->tref);
bgav_diprintf(indent, "end of trak\n");
}
int64_t bgav_qt_trak_samples(qt_trak_t * trak)
{
int i;
int64_t ret = 0;
qt_stts_t * stts = &trak->mdia.minf.stbl.stts;
for(i = 0; i < stts->num_entries; i++)
{
ret += stts->entries[i].count;
}
return ret;
}
int64_t bgav_qt_trak_chunks(qt_trak_t * c)
{
return c->mdia.minf.stbl.stco.num_entries;
}
int64_t bgav_qt_trak_tics(qt_trak_t * c) /* Duration in timescale tics */
{
int i;
int64_t ret = 0;
for(i = 0; i < c->mdia.minf.stbl.stts.num_entries; i++)
{
ret += c->mdia.minf.stbl.stts.entries[i].count * c->mdia.minf.stbl.stts.entries[i].duration;
}
return ret;
}
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