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/*
* Copyright (C) 2000-2002 the xine project
*
* This file is part of xine, a free 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 1.38 2002/03/24 14:15:37 guenter 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>
#include <sys/types.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
#define BUF_CONTROL_DISCONTINUITY 0x01030000 /* former AVSYNC_RESET */
#define BUF_CONTROL_NOP 0x01040000
#define BUF_CONTROL_AUDIO_CHANNEL 0x01050000
#define BUF_CONTROL_SPU_CHANNEL 0x01060000
#define BUF_CONTROL_NEWPTS 0x01070000
#define BUF_CONTROL_SEEK 0x01080000
/* video buffer types: (please keep in sync with buffer_types.c) */
#define BUF_VIDEO_BASE 0x02000000
#define BUF_VIDEO_MPEG 0x02000000
#define BUF_VIDEO_MPEG4 0x02010000
#define BUF_VIDEO_CINEPAK 0x02020000
#define BUF_VIDEO_SORENSON 0x02030000
#define BUF_VIDEO_MSMPEG4_V12 0x02040000
#define BUF_VIDEO_MSMPEG4_V3 0x02050000
#define BUF_VIDEO_MJPEG 0x02060000
#define BUF_VIDEO_IV50 0x02070000
#define BUF_VIDEO_IV41 0x02080000
#define BUF_VIDEO_IV32 0x02090000
#define BUF_VIDEO_IV31 0x020a0000
#define BUF_VIDEO_ATIVCR1 0x020b0000
#define BUF_VIDEO_ATIVCR2 0x020c0000
#define BUF_VIDEO_I263 0x020d0000
#define BUF_VIDEO_RV10 0x020e0000
#define BUF_VIDEO_RGB 0x02100000
#define BUF_VIDEO_YUY2 0x02110000
#define BUF_VIDEO_JPEG 0x02120000
#define BUF_VIDEO_WMV7 0x02130000
#define BUF_VIDEO_WMV8 0x02140000
#define BUF_VIDEO_MSVC 0x02150000
#define BUF_VIDEO_DV 0x02160000
#define BUF_VIDEO_REAL 0x02170000
#define BUF_VIDEO_VP31 0x02180000
#define BUF_VIDEO_H263 0x02190000
#define BUF_VIDEO_3IVX 0x021A0000
/* audio buffer types: (please keep in sync with buffer_types.c) */
#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_DIVXA 0x03040000
#define BUF_AUDIO_DTS 0x03050000
#define BUF_AUDIO_MSADPCM 0x03060000
#define BUF_AUDIO_IMAADPCM 0x03070000
#define BUF_AUDIO_MSGSM 0x03080000
#define BUF_AUDIO_VORBIS 0x03090000
#define BUF_AUDIO_IMC 0x030a0000
#define BUF_AUDIO_LH 0x030b0000
#define BUF_AUDIO_VOXWARE 0x030c0000
#define BUF_AUDIO_ACELPNET 0x030d0000
#define BUF_AUDIO_AAC 0x030e0000
#define BUF_AUDIO_REAL 0x030f0000
#define BUF_AUDIO_VIVOG723 0x03100000
/* spu buffer types: */
#define BUF_SPU_BASE 0x04000000
#define BUF_SPU_CLUT 0x04000000
#define BUF_SPU_PACKAGE 0x04010000
#define BUF_SPU_SUBP_CONTROL 0x04020000
#define BUF_SPU_NAV 0x04030000
#define BUF_SPU_TEXT 0x04040000
/* demuxer block types: */
#define BUF_DEMUX_BLOCK 0x05000000
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 mem (without header etc) */
int32_t size ; /* size of _content_ */
int32_t max_size; /* size of pre-allocated memory pointed to by "mem" */
uint32_t type;
int64_t pts; /* presentation time stamp, used for a/v sync */
int64_t disc_off; /* discontinuity offset */
off_t input_pos; /* remember where this buf came from in the input source */
int input_time;/* time offset in seconds from beginning of stream */
uint32_t decoder_flags; /* stuff like keyframe, is_header ... see below */
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 */
} ;
#define BUF_FLAG_KEYFRAME 0x0001
#define BUF_FLAG_FRAME_START 0x0002
#define BUF_FLAG_FRAME_END 0x0004
#define BUF_FLAG_HEADER 0x0008
#define BUF_FLAG_PREVIEW 0x0010
#define BUF_FLAG_END_USER 0x0020
#define BUF_FLAG_END_STREAM 0x0040
#define BUF_FLAG_FRAMERATE 0x0080
typedef struct fifo_buffer_s fifo_buffer_t;
struct fifo_buffer_s
{
buf_element_t *first, *last;
int fifo_size;
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) ;
int (*size) (fifo_buffer_t *fifo);
void (*dispose) (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;
int buffer_pool_capacity;
int buffer_pool_buf_size;
void *buffer_pool_base; /*used to free mem chunk */
} ;
/*
* 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);
/* return BUF_VIDEO_xxx given the fourcc */
uint32_t fourcc_to_buf_video( void * fourcc );
/* return codec name given BUF_VIDEO_xxx */
char * buf_video_name( uint32_t buf_type );
/* return BUF_VIDEO_xxx given the formattag */
uint32_t formattag_to_buf_audio( uint16_t formattag );
/* return codec name given BUF_VIDEO_xxx */
char * buf_audio_name( uint32_t buf_type );
#ifdef __cplusplus
}
#endif
#endif
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