spudec.h

uclinux 下的vlc播放器源代码

/*****************************************************************************
 * spudec.h : sub picture unit decoder thread interface
 *****************************************************************************
 * Copyright (C) 1999, 2000, 2006 the VideoLAN team
 * $Id: spudec.h 15130 2006-04-07 16:33:51Z massiot $
 *
 * Authors: Sam Hocevar <[e-mail]>
 *
 * 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, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
 *****************************************************************************/

/* #define DEBUG_SPUDEC 1 */

struct decoder_sys_t
{
    int b_packetizer;

    mtime_t i_pts;
    unsigned int i_spu_size;
    unsigned int i_rle_size;
    unsigned int i_spu;

    block_t *p_block;

    /* We will never overflow */
    uint8_t buffer[65536];
};

typedef struct subpicture_data_t
{
    mtime_t i_pts;                                 /* presentation timestamp */

    int   pi_offset[2];                              /* byte offsets to data */
    void *p_data;

    /* Color information */
    vlc_bool_t b_palette;
    uint8_t    pi_alpha[4];
    uint8_t    pi_yuv[4][3];

    /* Auto crop fullscreen subtitles */
    vlc_bool_t b_auto_crop;
    int i_y_top_offset;
    int i_y_bottom_offset;

} subpicture_data_t;

/*****************************************************************************
 * Amount of bytes we GetChunk() in one go
 *****************************************************************************/
#define SPU_CHUNK_SIZE              0x200

/*****************************************************************************
 * SPU commands
 *****************************************************************************/
#define SPU_CMD_FORCE_DISPLAY       0x00
#define SPU_CMD_START_DISPLAY       0x01
#define SPU_CMD_STOP_DISPLAY        0x02
#define SPU_CMD_SET_PALETTE         0x03
#define SPU_CMD_SET_ALPHACHANNEL    0x04
#define SPU_CMD_SET_COORDINATES     0x05
#define SPU_CMD_SET_OFFSETS         0x06
#define SPU_CMD_END                 0xff

/*****************************************************************************
 * Prototypes
 *****************************************************************************/
subpicture_t * E_(ParsePacket)( decoder_t * );