1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
|
/*
* 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 1.19 2001/10/30 09:42:26 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
#define BUF_CONTROL_NOP 0x01040000
#define BUF_CONTROL_AUDIO_CHANNEL 0x01050000
#define BUF_CONTROL_SPU_CHANNEL 0x01060000
/* video buffer types: */
#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_FILL 0x020f0000
#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
/* 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_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
/* spu buffer types: */
#define BUF_SPU_BASE 0x04000000
#define BUF_SPU_CLUT 0x04000000
#define BUF_SPU_PACKAGE 0x04010000
#define BUF_SPU_SUBP_CONTROL 0x04020000
/* 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 pMem (without header etc) */
uint32_t size ; /* size of _content_ */
uint32_t max_size;
uint32_t type;
uint32_t PTS;
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_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;
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);
/*
* 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;
} ;
/*
* 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
|
