blob: e36ffefe9992d526d53969302f74e657f484e212 (
plain)
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
|
/**********************************************************************
** Copyright (C) 2000 Trolltech AS. All rights reserved.
**
** This file is part of Qtopia Environment.
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** See http://www.trolltech.com/gpl/ for GPL licensing information.
**
** Contact info@trolltech.com if any conditions of this licensing are
** not clear to you.
**
**********************************************************************/
#ifndef SLICE_H
#define SLICE_H
#ifndef _WIN32
#include <pthread.h>
#endif
/* Array of these feeds the slice decoders */
typedef struct
{
unsigned char *data; /* Buffer for holding the slice data */
int buffer_size; /* Size of buffer */
int buffer_allocation; /* Space allocated for buffer */
int current_position; /* Position in buffer */
unsigned MPEG3_INT32 bits;
int bits_size;
pthread_mutex_t completion_lock; /* Lock slice until completion */
int done; /* Signal for slice decoder to skip */
} mpeg3_slice_buffer_t;
/* Each slice decoder */
typedef struct
{
struct mpeg3video_rec *video;
mpeg3_slice_buffer_t *slice_buffer;
int thread_number; /* Number of this thread */
int current_buffer; /* Buffer this slice decoder is on */
int buffer_step; /* Number of buffers to skip */
int last_buffer; /* Last buffer this decoder should process */
int fault;
int done;
int quant_scale;
int pri_brk; /* slice/macroblock */
short block[12][64];
int sparse[12];
pthread_t tid; /* ID of thread */
pthread_mutex_t input_lock, output_lock;
} mpeg3_slice_t;
#define mpeg3slice_fillbits(buffer, nbits) \
while(((mpeg3_slice_buffer_t*)(buffer))->bits_size < (nbits)) \
{ \
if(((mpeg3_slice_buffer_t*)(buffer))->current_position < ((mpeg3_slice_buffer_t*)(buffer))->buffer_size) \
{ \
((mpeg3_slice_buffer_t*)(buffer))->bits <<= 8; \
((mpeg3_slice_buffer_t*)(buffer))->bits |= ((mpeg3_slice_buffer_t*)(buffer))->data[((mpeg3_slice_buffer_t*)(buffer))->current_position++]; \
} \
((mpeg3_slice_buffer_t*)(buffer))->bits_size += 8; \
}
#define mpeg3slice_flushbits(buffer, nbits) \
{ \
mpeg3slice_fillbits((buffer), (nbits)); \
((mpeg3_slice_buffer_t*)(buffer))->bits_size -= (nbits); \
}
#define mpeg3slice_flushbit(buffer) \
{ \
if(((mpeg3_slice_buffer_t*)(buffer))->bits_size) \
((mpeg3_slice_buffer_t*)(buffer))->bits_size--; \
else \
if(((mpeg3_slice_buffer_t*)(buffer))->current_position < ((mpeg3_slice_buffer_t*)(buffer))->buffer_size) \
{ \
((mpeg3_slice_buffer_t*)(buffer))->bits = \
((mpeg3_slice_buffer_t*)(buffer))->data[((mpeg3_slice_buffer_t*)(buffer))->current_position++]; \
((mpeg3_slice_buffer_t*)(buffer))->bits_size = 7; \
} \
}
extern inline unsigned int mpeg3slice_getbit(mpeg3_slice_buffer_t *buffer)
{
if(buffer->bits_size)
return (buffer->bits >> (--buffer->bits_size)) & 0x1;
else
if(buffer->current_position < buffer->buffer_size)
{
buffer->bits = buffer->data[buffer->current_position++];
buffer->bits_size = 7;
return (buffer->bits >> 7) & 0x1;
}
return 0; // WWA - stop warn
}
extern inline unsigned int mpeg3slice_getbits2(mpeg3_slice_buffer_t *buffer)
{
if(buffer->bits_size >= 2)
return (buffer->bits >> (buffer->bits_size -= 2)) & 0x3;
else
if(buffer->current_position < buffer->buffer_size)
{
buffer->bits <<= 8;
buffer->bits |= buffer->data[buffer->current_position++];
buffer->bits_size += 6;
return (buffer->bits >> buffer->bits_size) & 0x3;
}
return 0; // WWA - stop warn
}
extern inline unsigned int mpeg3slice_getbyte(mpeg3_slice_buffer_t *buffer)
{
if(buffer->bits_size >= 8)
return (buffer->bits >> (buffer->bits_size -= 8)) & 0xff;
else
if(buffer->current_position < buffer->buffer_size)
{
buffer->bits <<= 8;
buffer->bits |= buffer->data[buffer->current_position++];
return (buffer->bits >> buffer->bits_size) & 0xff;
}
return 0; // WWA - stop warn
}
extern inline unsigned int mpeg3slice_getbits(mpeg3_slice_buffer_t *slice_buffer, int bits)
{
if(bits == 1) return mpeg3slice_getbit(slice_buffer);
mpeg3slice_fillbits(slice_buffer, bits);
return (slice_buffer->bits >> (slice_buffer->bits_size -= bits)) & (0xffffffff >> (32 - bits));
}
extern inline unsigned int mpeg3slice_showbits16(mpeg3_slice_buffer_t *buffer)
{
if(buffer->bits_size >= 16)
return (buffer->bits >> (buffer->bits_size - 16)) & 0xffff;
else
if(buffer->current_position < buffer->buffer_size)
{
buffer->bits <<= 16;
buffer->bits_size += 16;
buffer->bits |= (unsigned int)buffer->data[buffer->current_position++] << 8;
buffer->bits |= buffer->data[buffer->current_position++];
return (buffer->bits >> (buffer->bits_size - 16)) & 0xffff;
}
return 0; // WWA - stop warn
}
extern inline unsigned int mpeg3slice_showbits9(mpeg3_slice_buffer_t *buffer)
{
if(buffer->bits_size >= 9)
return (buffer->bits >> (buffer->bits_size - 9)) & 0x1ff;
else
if(buffer->current_position < buffer->buffer_size)
{
buffer->bits <<= 16;
buffer->bits_size += 16;
buffer->bits |= (unsigned int)buffer->data[buffer->current_position++] << 8;
buffer->bits |= buffer->data[buffer->current_position++];
return (buffer->bits >> (buffer->bits_size - 9)) & 0x1ff;
}
return 0; // WWA - stop warn
}
extern inline unsigned int mpeg3slice_showbits5(mpeg3_slice_buffer_t *buffer)
{
if(buffer->bits_size >= 5)
return (buffer->bits >> (buffer->bits_size - 5)) & 0x1f;
else
if(buffer->current_position < buffer->buffer_size)
{
buffer->bits <<= 8;
buffer->bits_size += 8;
buffer->bits |= buffer->data[buffer->current_position++];
return (buffer->bits >> (buffer->bits_size - 5)) & 0x1f;
}
return 0; // WWA - stop warn
}
extern inline unsigned int mpeg3slice_showbits(mpeg3_slice_buffer_t *slice_buffer, int bits)
{
mpeg3slice_fillbits(slice_buffer, bits);
return (slice_buffer->bits >> (slice_buffer->bits_size - bits)) & (0xffffffff >> (32 - bits));
}
#endif
|
