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
|
#include <pthread.h>
#include <assert.h>
#include "hwdec.h"
struct mp_hwdec_devices {
pthread_mutex_t lock;
struct mp_hwdec_ctx *hwctx;
void (*load_api)(void *ctx, enum hwdec_type type);
void *load_api_ctx;
};
struct mp_hwdec_devices *hwdec_devices_create(void)
{
struct mp_hwdec_devices *devs = talloc_zero(NULL, struct mp_hwdec_devices);
pthread_mutex_init(&devs->lock, NULL);
return devs;
}
void hwdec_devices_destroy(struct mp_hwdec_devices *devs)
{
if (!devs)
return;
assert(!devs->hwctx); // must have been hwdec_devices_remove()ed
assert(!devs->load_api); // must have been unset
pthread_mutex_destroy(&devs->lock);
talloc_free(devs);
}
struct mp_hwdec_ctx *hwdec_devices_get(struct mp_hwdec_devices *devs,
enum hwdec_type type)
{
struct mp_hwdec_ctx *res = NULL;
pthread_mutex_lock(&devs->lock);
if (devs->hwctx && devs->hwctx->type == type)
res = devs->hwctx;
pthread_mutex_unlock(&devs->lock);
return res;
}
struct mp_hwdec_ctx *hwdec_devices_get_first(struct mp_hwdec_devices *devs)
{
pthread_mutex_lock(&devs->lock);
struct mp_hwdec_ctx *res = devs->hwctx;
pthread_mutex_unlock(&devs->lock);
return res;
}
void hwdec_devices_add(struct mp_hwdec_devices *devs, struct mp_hwdec_ctx *ctx)
{
pthread_mutex_lock(&devs->lock);
// We support only 1 device; ignore the rest.
if (!devs->hwctx)
devs->hwctx = ctx;
pthread_mutex_unlock(&devs->lock);
}
void hwdec_devices_remove(struct mp_hwdec_devices *devs, struct mp_hwdec_ctx *ctx)
{
pthread_mutex_lock(&devs->lock);
if (devs->hwctx == ctx)
devs->hwctx = NULL;
pthread_mutex_unlock(&devs->lock);
}
void hwdec_devices_set_loader(struct mp_hwdec_devices *devs,
void (*load_api)(void *ctx, enum hwdec_type type), void *load_api_ctx)
{
devs->load_api = load_api;
devs->load_api_ctx = load_api_ctx;
}
// Cause VO to lazily load the requested device, and will block until this is
// done (even if not available).
void hwdec_devices_request(struct mp_hwdec_devices *devs, enum hwdec_type type)
{
if (devs->load_api && !hwdec_devices_get_first(devs))
devs->load_api(devs->load_api_ctx, type);
}
void *hwdec_devices_load(struct mp_hwdec_devices *devs, enum hwdec_type type)
{
if (!devs)
return NULL;
hwdec_devices_request(devs, type);
struct mp_hwdec_ctx *hwctx = hwdec_devices_get(devs, type);
return hwctx ? hwctx->ctx : NULL;
}
|
