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/*
* Copyright (C) 2000-2001 the xine project
*
* This file is part of xine, a unix video player.
*
* xine 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.
*
* xine 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
*
* $Id: buffer.h,v 1.7 2001/08/31 17:57:54 jkeil Exp $
*
*
* contents:
*
* buffer_entry structure - serves as a transport encapsulation
* of the mpeg audio/video data through xine
*
* free buffer pool management routines
*
* FIFO buffer structures/routines
*
*/
#ifndef HAVE_BUFFER_H
#define HAVE_BUFFER_H
#ifdef __cplusplus
extern "C" {
#endif
#include <stdio.h>
#include <pthread.h>
#include <inttypes.h>
/*
* buffer types
*
* a buffer type ID describes the contents of a buffer
* it consists of three fields:
*
* buf_type = 0xMMDDCCCC
*
* MM : major buffer type (CONTROL, VIDEO, AUDIO, SPU)
* DD : decoder selection (e.g. MPEG, OPENDIVX ... for VIDEO)
* CCCC : channel number or other subtype information for the decoder
*/
#define BUF_MAJOR_MASK 0xFF000000
#define BUF_DECODER_MASK 0x00FF0000
/* control buffer types */
#define BUF_CONTROL_BASE 0x01000000
#define BUF_CONTROL_START 0x01000000
#define BUF_CONTROL_END 0x01010000
#define BUF_CONTROL_QUIT 0x01020000
/* video buffer types: */
#define BUF_VIDEO_BASE 0x02000000
#define BUF_VIDEO_MPEG 0x02000000
#define BUF_VIDEO_MPEG4 0x02010000
#define BUF_VIDEO_QUICKTIME 0x02020000
#define BUF_VIDEO_AVI 0x02030000
#define BUF_VIDEO_MSMPEG4 0x02040000
#define BUF_VIDEO_MJPEG 0x02050000
#define BUF_VIDEO_IV50 0x02060000
#define BUF_VIDEO_IV41 0x02070000
#define BUF_VIDEO_IV32 0x02080000
#define BUF_VIDEO_CINEPACK 0x02090000
#define BUF_VIDEO_ATIVCR1 0x020a0000
#define BUF_VIDEO_ATIVCR2 0x020b0000
#define BUF_VIDEO_I263 0x020c0000
#define BUF_VIDEO_RV10 0x020d0000
/* audio buffer types: */
#define BUF_AUDIO_BASE 0x03000000
#define BUF_AUDIO_A52 0x03000000
#define BUF_AUDIO_MPEG 0x03010000
#define BUF_AUDIO_LPCM_BE 0x03020000
#define BUF_AUDIO_LPCM_LE 0x03030000
#define BUF_AUDIO_AVI 0x03040000
/* spu buffer types: */
#define BUF_SPU_BASE 0x04000000
#define BUF_SPU_CLUT 0x04000000
#define BUF_SPU_PACKAGE 0x04010000
typedef struct buf_element_s buf_element_t;
struct buf_element_s {
buf_element_t *next;
unsigned char *mem;
unsigned char *content; /* start of raw content in pMem (without header etc) */
uint32_t size ; /* size of _content_ */
uint32_t max_size;
uint32_t type;
uint32_t PTS, DTS;
off_t input_pos; /* remember where this buf came from in the input source */
uint32_t decoder_info[4]; /* additional decoder flags and other dec-spec. stuff */
void (*free_buffer) (buf_element_t *buf);
void *source; /* pointer to source of this buffer for */
/* free_buffer */
} ;
typedef struct fifo_buffer_s fifo_buffer_t;
struct fifo_buffer_s
{
buf_element_t *first, *last;
pthread_mutex_t mutex;
pthread_cond_t not_empty;
/*
* functions to access this fifo:
*/
void (*put) (fifo_buffer_t *fifo, buf_element_t *buf);
buf_element_t *(*get) (fifo_buffer_t *fifo);
void (*clear) (fifo_buffer_t *fifo) ;
/*
* alloc buffer for this fifo from global buf pool
* you don't have to use this function to allocate a buffer,
* an input plugin can decide to implement it's own
* buffer allocation functions
*/
buf_element_t *(*buffer_pool_alloc) (fifo_buffer_t *this);
/*
* private variables for buffer pool management
*/
buf_element_t *buffer_pool_top; /* a stack actually */
pthread_mutex_t buffer_pool_mutex;
pthread_cond_t buffer_pool_cond_not_empty;
int buffer_pool_num_free;
} ;
/*
* allocate and initialize new (empty) fifo buffer,
* init buffer pool for it:
* allocate num_buffers of buf_size bytes each
*/
fifo_buffer_t *fifo_buffer_new (int num_buffers, uint32_t buf_size);
#ifdef __cplusplus
}
#endif
#endif
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