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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 <avdec_private.h>
#include <qt.h>
/*
#define TFHD_BASE_DATA_OFFSET_PRESENT 0x000001
#define TFHD_SAMPLE_DESCRIPTION_INDEX_PRESENT 0x000002
#define TFHD_DEFAULT_SAMPLE_DURATION_PRESENT 0x000008
#define TFHD_DEFAULT_SAMPLE_SIZE_PRESENT 0x000010
#define TFHD_DEFAULT_SAMPLE_FLAGS_PRESENT 0x000020
#define TFHD_DURATION_IS_EMPTY 0x010000
typedef struct
{
qt_atom_header_t h;
int version;
uint32_t flags;
uint32_t track_ID;
// all the following are optional fields
uint64_t base_data_offset;
uint32_t sample_description_index;
uint32_t default_sample_duration;
uint32_t default_sample_size;
uint32_t default_sample_flags;
} qt_tfhd_t;
*/
int bgav_qt_tfhd_read(qt_atom_header_t * h, bgav_input_context_t * input,
qt_tfhd_t * ret)
{
READ_VERSION_AND_FLAGS;
memcpy(&ret->h, h, sizeof(*h));
if(!bgav_input_read_32_be(input, &ret->track_ID))
return 0;
if((ret->flags & TFHD_BASE_DATA_OFFSET_PRESENT) &&
!bgav_input_read_64_be(input, &ret->base_data_offset))
return 0;
if((ret->flags & TFHD_SAMPLE_DESCRIPTION_INDEX_PRESENT) &&
!bgav_input_read_32_be(input, &ret->sample_description_index))
return 0;
if((ret->flags & TFHD_DEFAULT_SAMPLE_DURATION_PRESENT) &&
!bgav_input_read_32_be(input, &ret->default_sample_duration))
return 0;
if((ret->flags & TFHD_DEFAULT_SAMPLE_SIZE_PRESENT) &&
!bgav_input_read_32_be(input, &ret->default_sample_size))
return 0;
if((ret->flags & TFHD_DEFAULT_SAMPLE_FLAGS_PRESENT) &&
!bgav_input_read_32_be(input, &ret->default_sample_flags))
return 0;
return 1;
}
void bgav_qt_tfhd_dump(int indent, qt_tfhd_t * g)
{
bgav_diprintf(indent, "tfhd\n");
bgav_diprintf(indent+2, "version: %d\n", g->version);
bgav_diprintf(indent+2, "flags: %08x\n", g->flags);
bgav_diprintf(indent+2, "track_ID: %d\n", g->track_ID);
if(g->flags & TFHD_BASE_DATA_OFFSET_PRESENT)
bgav_diprintf(indent+2, "base_data_offset: %"PRId64"\n", g->base_data_offset);
if(g->flags & TFHD_SAMPLE_DESCRIPTION_INDEX_PRESENT)
bgav_diprintf(indent+2, "sample_description_index: %d\n", g->sample_description_index);
if(g->flags & TFHD_DEFAULT_SAMPLE_DURATION_PRESENT)
bgav_diprintf(indent+2, "default_sample_duration: %d\n", g->default_sample_duration);
if(g->flags & TFHD_DEFAULT_SAMPLE_SIZE_PRESENT)
bgav_diprintf(indent+2, "default_sample_size: %d\n", g->default_sample_size);
if(g->flags & TFHD_DEFAULT_SAMPLE_FLAGS_PRESENT)
bgav_diprintf(indent+2, "default_sample_flags: %d\n", g->default_sample_flags);
bgav_diprintf(indent, "end of tfhd\n");
}
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