amlogic-aml8726-mx-kernel/drivers/amlogic/amports/streambuf.h

/*
 * AMLOGIC Audio/Video streaming port driver.
 *
 * 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 named License,
 * or 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA
 *
 * Author:  Tim Yao <timyao@amlogic.com>
 *
 */

#ifndef STREAMBUF_H
#define STREAMBUF_H

#define BUF_FLAG_ALLOC          0x01
#define BUF_FLAG_IN_USE         0x02
#define BUF_FLAG_PARSER         0x04
#define BUF_FLAG_FIRST_TSTAMP   0x08
#define BUF_FLAG_IOMEM          0x10

#define BUF_TYPE_VIDEO      0
#define BUF_TYPE_AUDIO      1
#define BUF_TYPE_SUBTITLE   2
#define BUF_MAX_NUM         3

#define INVALID_PTS 0xffffffff

#define FETCHBUF_SIZE   (64*1024)

typedef struct stream_buf_s {
    s32   flag;
    u32   type;
    u32   buf_start;
    u32   buf_size;
    u32   first_tstamp;
    const ulong reg_base;
    wait_queue_head_t   wq;
    struct timer_list timer;
    u32   wcnt;
} stream_buf_t;

typedef struct stream_port_s {
    /* driver info */
    const char *name;
    struct device *class_dev;
    const struct file_operations *fops;

    /* ports control */
    s32 type;
    s32 flag;

    /* decoder info */
    s32 vformat;
    s32 aformat;
    s32 achanl;
    s32 asamprate;
    s32 adatawidth;

    /* parser info */
    u32 vid;
    u32 aid;
    u32 sid;
} stream_port_t;

extern ulong fetchbuf, *fetchbuf_remap;

extern u32 stbuf_level(struct stream_buf_s *buf);
extern u32 stbuf_rp(struct stream_buf_s *buf);
extern u32 stbuf_space(struct stream_buf_s *buf);
extern u32 stbuf_size(struct stream_buf_s *buf);

extern s32 stbuf_init(struct stream_buf_s *buf);
extern s32 stbuf_wait_space(struct stream_buf_s *stream_buf, size_t count);
extern void stbuf_release(struct stream_buf_s *buf);
extern int  stbuf_change_size(struct stream_buf_s *buf, int size);
extern int stbuf_fetch_init(void);
extern void stbuf_fetch_release(void);
extern u32 stbuf_sub_rp_get(void);
extern void stbuf_sub_rp_set(unsigned int sub_rp);
extern u32 stbuf_sub_wp_get(void);
extern u32 stbuf_sub_start_get(void);
extern stream_buf_t* get_stream_buffer(int id);

#endif /* STREAMBUF_H */