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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 <qt.h>
/*
typedef struct
{
uint32_t sample_duration;
uint32_t sample_size;
uint32_t sample_flags;
uint32_t sample_composition_time_offset;
} qt_trun_sample_t;
#define TRUN_DATA_OFFSET_PRESENT 0x000001
#define TRUN_FIRST_SAMPLE_FLAGS_PRESENT 0x000004
#define TRUN_SAMPLE_DURATION_PRESENT 0x000100
#define TRUN_SAMPLE_SIZE_PRESENT 0x000200
#define TRUN_SAMPLE_FLAGS_PRESENT 0x000400
#define TRUN_SAMPLE_COMPOSITION_TIME_OFFSETS_PRESENT 0x000800
typedef struct
{
qt_atom_header_t h;
int version;
uint32_t flags;
uint32_t sample_count;
int32_t data_offset;
uint32_t first_sample_flags;
qt_trun_sample_t * samples;
} qt_trun_t;
*/
int bgav_qt_trun_read(qt_atom_header_t * h, bgav_input_context_t * input,
qt_trun_t * ret)
{
int i;
READ_VERSION_AND_FLAGS;
memcpy(&ret->h, h, sizeof(*h));
if(!bgav_input_read_32_be(input, &ret->sample_count))
return 0;
if((ret->flags & TRUN_DATA_OFFSET_PRESENT) &&
!bgav_input_read_32_be(input, (uint32_t*)(&ret->data_offset)))
return 0;
if((ret->flags & TRUN_FIRST_SAMPLE_FLAGS_PRESENT) &&
!bgav_input_read_32_be(input, &ret->first_sample_flags))
return 0;
if(!(ret->flags & (TRUN_SAMPLE_DURATION_PRESENT |
TRUN_SAMPLE_SIZE_PRESENT |
TRUN_SAMPLE_FLAGS_PRESENT |
TRUN_SAMPLE_COMPOSITION_TIME_OFFSETS_PRESENT)))
return 1;
ret->samples = calloc(ret->sample_count, sizeof(*ret->samples));
for(i = 0; i < ret->sample_count; i++)
{
if((ret->flags & TRUN_SAMPLE_DURATION_PRESENT) &&
!bgav_input_read_32_be(input, &ret->samples[i].sample_duration))
return 0;
if((ret->flags & TRUN_SAMPLE_SIZE_PRESENT) &&
!bgav_input_read_32_be(input, &ret->samples[i].sample_size))
return 0;
if((ret->flags & TRUN_SAMPLE_FLAGS_PRESENT) &&
!bgav_input_read_32_be(input, &ret->samples[i].sample_flags))
return 0;
if((ret->flags & TRUN_SAMPLE_COMPOSITION_TIME_OFFSETS_PRESENT) &&
!bgav_input_read_32_be(input, &ret->samples[i].sample_composition_time_offset))
return 0;
}
return 1;
}
void bgav_qt_trun_dump(int indent, qt_trun_t * g)
{
int i;
bgav_diprintf(indent, "trun\n");
bgav_diprintf(indent+2, "version: %d\n", g->version);
bgav_diprintf(indent+2, "flags: %08x\n", g->flags);
bgav_diprintf(indent+2, "sample_count: %d\n", g->sample_count);
if(g->flags & TRUN_DATA_OFFSET_PRESENT)
bgav_diprintf(indent+2, "data_offset: %d\n", g->data_offset);
if(g->flags & TRUN_FIRST_SAMPLE_FLAGS_PRESENT)
bgav_diprintf(indent+2, "first_sample_flags: %08x\n", g->first_sample_flags);
if(g->samples)
{
for(i = 0; i < g->sample_count; i++)
{
bgav_diprintf(indent+2, "sample %d\n", i);
if(g->flags & TRUN_SAMPLE_DURATION_PRESENT)
bgav_diprintf(indent+4, "sample_duration %d\n", g->samples[i].sample_duration);
if(g->flags & TRUN_SAMPLE_SIZE_PRESENT)
bgav_diprintf(indent+4, "sample_size %d\n", g->samples[i].sample_size);
if(g->flags & TRUN_SAMPLE_FLAGS_PRESENT)
bgav_diprintf(indent+4, "sample_flags %d\n", g->samples[i].sample_flags);
if(g->flags & TRUN_SAMPLE_COMPOSITION_TIME_OFFSETS_PRESENT)
bgav_diprintf(indent+4, "sample_composition_time_offset %d\n",
g->samples[i].sample_composition_time_offset);
}
}
bgav_diprintf(indent, "end of trun\n");
}
void bgav_qt_trun_free(qt_trun_t * c)
{
if(c->samples)
free(c->samples);
}
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