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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 <avdec_private.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <qt.h>
#define LOG_DOMAIN "quicktime.wave"
int bgav_qt_wave_read(qt_atom_header_t * h, bgav_input_context_t * ctx,
qt_wave_t * ret)
{
int done = 0;
qt_atom_header_t ch; /* Child header */
bgav_input_context_t * input_mem;
ret->raw_size = h->size - (ctx->position - h->start_position);
ret->raw = malloc(ret->raw_size);
if(bgav_input_read_data(ctx, ret->raw, ret->raw_size) < ret->raw_size)
return 0;
input_mem = bgav_input_open_memory(ret->raw,
ret->raw_size, ctx->opt);
while(input_mem->position < ret->raw_size)
{
// data_ptr = ret->raw + input_mem->position;
if(!bgav_qt_atom_read_header(input_mem, &ch))
return 0;
switch(ch.fourcc)
{
case BGAV_MK_FOURCC('e', 's', 'd', 's'):
if(!bgav_qt_esds_read(&ch, input_mem, &ret->esds))
return 0;
ret->has_esds = 1;
break;
case BGAV_MK_FOURCC('f', 'r', 'm', 'a'):
if(!bgav_qt_frma_read(&ch, input_mem, &ret->frma))
return 0;
ret->has_frma = 1;
break;
case BGAV_MK_FOURCC('e', 'n', 'd', 'a'):
if(!bgav_qt_enda_read(&ch, input_mem, &ret->enda))
return 0;
ret->has_enda = 1;
break;
case 0: /* audio atom Terminator */
done = 1;
ret->raw_size -= 8;
break;
default:
/* Workaround for some broken encoders, which write some parts
of the wave atom in little endian */
if(ch.size > ret->raw_size)
{
gavl_log(GAVL_LOG_WARNING, LOG_DOMAIN,
"Skipping remainder of broken wave atom");
done = 1;
break;
}
/* Append user atom */
if(!bgav_qt_user_atoms_append(&ch, input_mem, &ret->user))
return 0;
break;
}
if(done)
break;
}
bgav_input_destroy(input_mem);
return 1;
}
void bgav_qt_wave_dump(int indent, qt_wave_t * f)
{
bgav_diprintf(indent, "wave\n");
if(f->has_frma)
bgav_qt_frma_dump(indent+2, &f->frma);
if(f->has_enda)
bgav_qt_enda_dump(indent+2, &f->enda);
if(f->has_esds)
bgav_qt_esds_dump(indent+2, &f->esds);
bgav_qt_user_atoms_dump(indent+2, &f->user);
}
void bgav_qt_wave_free(qt_wave_t * w)
{
if(w->raw)
free(w->raw);
if(w->has_esds)
bgav_qt_esds_free(&w->esds);
bgav_qt_user_atoms_free(&w->user);
}
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