gmin.c

来自「这个库实现了录象功能」· C语言 代码 · 共 78 行

/*******************************************************************************
 gmin.c

 libquicktime - A library for reading and writing quicktime/avi/mp4 files.
 http://libquicktime.sourceforge.net

 Copyright (C) 2002 Heroine Virtual Ltd.
 Copyright (C) 2002-2007 Members of the libquicktime project.

 This library is free software; you can redistribute it and/or modify it under
 the terms of the GNU Lesser General Public License as published by the Free
 Software Foundation; either version 2.1 of the License, or (at your option)
 any later version.

 This library 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 Lesser General Public License for more
 details.

 You should have received a copy of the GNU Lesser General Public License along
 with this library; if not, write to the Free Software Foundation, Inc., 51
 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*******************************************************************************/ 

#include "lqt_private.h"

void quicktime_gmin_init(quicktime_gmin_t *gmin)
{
       gmin->version = 0;
       gmin->flags = 0;
       gmin->graphics_mode = 64;
       gmin->opcolor[0] = 32768;
       gmin->opcolor[1] = 32768;
       gmin->opcolor[2] = 32768;
       gmin->balance = 0;
}

void quicktime_gmin_delete(quicktime_gmin_t *gmin) { }

void quicktime_gmin_dump(quicktime_gmin_t *gmin)
{
       lqt_dump("       Base media info (gmin)\n");
       lqt_dump("        version %d\n", gmin->version);
       lqt_dump("        flags %ld\n", gmin->flags);
       lqt_dump("        graphics_mode %d\n", gmin->graphics_mode);
       lqt_dump("        opcolor %d %d %d\n", gmin->opcolor[0], gmin->opcolor[1], gmin->opcolor[2]);
       lqt_dump("        balance %d\n", gmin->balance);
}

void quicktime_read_gmin(quicktime_t *file, quicktime_gmin_t *gmin)
{
       int i;
       gmin->version = quicktime_read_char(file);
       gmin->flags = quicktime_read_int24(file);
       gmin->graphics_mode = quicktime_read_int16(file);
       for(i = 0; i < 3; i++)
               gmin->opcolor[i] = quicktime_read_int16(file);
       gmin->balance = quicktime_read_int16(file);
}

void quicktime_write_gmin(quicktime_t *file, quicktime_gmin_t *gmin)
{
       quicktime_atom_t atom;
       int i;
       quicktime_atom_write_header(file, &atom, "gmin");

       quicktime_write_char(file, gmin->version);
       quicktime_write_int24(file, gmin->flags);
       quicktime_write_int16(file, gmin->graphics_mode);
       for(i = 0; i < 3; i++)
               quicktime_write_int16(file, gmin->opcolor[i]);
       quicktime_write_int16(file, gmin->balance);
       quicktime_write_int16(file, gmin->reserved);

       quicktime_atom_write_footer(file, &atom);
}