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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>
#include <zlib.h>
#include <stdio.h>
#define LOG_DOMAIN "quicktime.cmov"
int bgav_qt_cmov_read(qt_atom_header_t * h, bgav_input_context_t * input,
qt_moov_t * ret)
{
qt_atom_header_t ch;
uint32_t compression_id;
uint32_t size_compressed;
uint32_t size_uncompressed;
uLongf size_uncompressed_ret; /* use zlib type to keep gcc happy */
int result;
uint8_t * buf_compressed;
uint8_t * buf_uncompressed;
bgav_input_context_t * input_mem;
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('d', 'c', 'o', 'm'):
if(!bgav_input_read_fourcc(input, &compression_id))
return 0;
switch(compression_id)
{
case BGAV_MK_FOURCC('z', 'l', 'i', 'b'):
// have_dcom = 1;
break;
default:
gavl_log(GAVL_LOG_ERROR, LOG_DOMAIN,
"Unknown compression method: %c%c%c%c",
compression_id >> 24,
(compression_id >> 16) & 0xff,
(compression_id >> 8) & 0xff,
compression_id & 0xff);
return 0;
}
break;
case BGAV_MK_FOURCC('c', 'm', 'v', 'd'):
if(!bgav_input_read_32_be(input, &size_uncompressed))
return 0;
size_compressed = h->size - (input->position - h->start_position);
/* Decompress header and parse it */
buf_compressed = malloc(size_compressed);
buf_uncompressed = malloc(size_uncompressed);
if(bgav_input_read_data(input, buf_compressed, size_compressed) <
size_compressed)
return 0;
size_uncompressed_ret = size_uncompressed;
if(uncompress(buf_uncompressed, &size_uncompressed_ret,
buf_compressed, size_compressed) != Z_OK)
{
gavl_log(GAVL_LOG_ERROR, LOG_DOMAIN, "Uncompression failed");
return 0;
}
input_mem = bgav_input_open_memory(buf_uncompressed,
size_uncompressed_ret,
input->opt);
if(!bgav_qt_atom_read_header(input_mem, &ch) ||
ch.fourcc != BGAV_MK_FOURCC('m', 'o', 'o', 'v'))
{
bgav_input_destroy(input_mem);
return 0;
}
result = bgav_qt_moov_read(&ch, input_mem, ret);
bgav_input_destroy(input_mem);
free(buf_compressed);
free(buf_uncompressed);
return result;
break;
default:
bgav_qt_atom_skip_unknown(input, &ch, h->fourcc);
}
}
return 1;
}
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