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
|
/* Author: Max Howell <max.howell@methylblue.com>, (C) 2004
Copyright: See COPYING file that comes with this distribution */
/* gcc doesn't like inline for me */
#define inline
/* need access to port_ticket */
#define XINE_ENGINE_INTERNAL
#include "xineScope.h"
#include <xine/post.h>
#include <xine/xine_internal.h>
static MyNode theList;
static metronom_t theMetronom;
static int myChannels = 0;
MyNode* const myList = &theList;
metronom_t* const myMetronom = &theMetronom;
/* defined in xineEngine.cpp */
extern void _debug( const char * );
/*************************
* post plugin functions *
*************************/
static int
scope_port_open( xine_audio_port_t *port_gen, xine_stream_t *stream, uint32_t bits, uint32_t rate, int mode )
{
_debug( "scope_port_open()\n" );
#define port ((post_audio_port_t*)port_gen)
_x_post_rewire( (post_plugin_t*)port->post );
_x_post_inc_usage( port );
port->stream = stream;
port->bits = bits;
port->rate = rate;
port->mode = mode;
myChannels = _x_ao_mode2channels( mode );
return port->original_port->open( port->original_port, stream, bits, rate, mode );
}
static void
scope_port_close( xine_audio_port_t *port_gen, xine_stream_t *stream )
{
_debug( "scope_port_close()\n" );
port->stream = NULL;
port->original_port->close( port->original_port, stream );
_x_post_dec_usage( port );
}
static void
scope_port_put_buffer( xine_audio_port_t *port_gen, audio_buffer_t *buf, xine_stream_t *stream )
{
MyNode *new_node;
const int num_samples = buf->num_frames * myChannels;
/* we are too simple to handle 8bit */
/* what does it mean when stream == NULL? */
if( port->bits == 8 ) {
port->original_port->put_buffer( port->original_port, buf, stream ); return; }
/* I keep my own metronom because xine wouldn't for some reason */
memcpy( myMetronom, stream->metronom, sizeof(metronom_t) );
new_node = malloc( sizeof(MyNode) );
new_node->vpts = myMetronom->got_audio_samples( myMetronom, buf->vpts, buf->num_frames );
new_node->num_frames = buf->num_frames;
new_node->mem = malloc( num_samples * 2 );
memcpy( new_node->mem, buf->mem, num_samples * 2 );
{
int64_t
K = myMetronom->pts_per_smpls; /*smpls = 1<<16 samples*/
K *= num_samples;
K /= (1<<16);
K += new_node->vpts;
new_node->vpts_end = K;
}
/* pass data to original port */
port->original_port->put_buffer( port->original_port, buf, stream );
/* finally we should append the current buffer to the list
* NOTE this is thread-safe due to the way we handle the list in the GUI thread */
new_node->next = myList->next;
myList->next = new_node;
#undef port
}
static void
scope_dispose( post_plugin_t *this )
{
free( this );
}
/************************
* plugin init function *
************************/
xine_post_t*
scope_plugin_new( xine_t *xine, xine_audio_port_t *audio_target )
{
if( audio_target == NULL )
return NULL;
post_plugin_t *post_plugin = xine_xmalloc( sizeof(post_plugin_t) );
{
post_plugin_t *this = post_plugin;
post_in_t *input;
post_out_t *output;
post_audio_port_t *port;
_x_post_init( this, 1, 0 );
port = _x_post_intercept_audio_port( this, audio_target, &input, &output );
port->new_port.open = scope_port_open;
port->new_port.close = scope_port_close;
port->new_port.put_buffer = scope_port_put_buffer;
this->xine_post.audio_input[0] = &port->new_port;
this->xine_post.type = PLUGIN_POST;
this->dispose = scope_dispose;
}
/* code is straight from xine_init_post()
can't use that function as it only dlopens the plugins
and our plugin is statically linked in */
post_plugin->running_ticket = xine->port_ticket;
post_plugin->xine = xine;
return &post_plugin->xine_post;
}
|
