1 /*
2  * Copyright © 2013 Mozilla Foundation
3  *
4  * This program is made available under an ISC-style license.  See the
5  * accompanying file LICENSE for details.
6  */
7 #if !defined(CUBEB_INTERNAL_0eb56756_4e20_4404_a76d_42bf88cd15a5)
8 #define CUBEB_INTERNAL_0eb56756_4e20_4404_a76d_42bf88cd15a5
9 
10 #include "cubeb/cubeb.h"
11 #include "cubeb_assert.h"
12 #include "cubeb_log.h"
13 #include <stdio.h>
14 #include <string.h>
15 
16 #ifdef __clang__
17 #ifndef CLANG_ANALYZER_NORETURN
18 #if __has_feature(attribute_analyzer_noreturn)
19 #define CLANG_ANALYZER_NORETURN __attribute__((analyzer_noreturn))
20 #else
21 #define CLANG_ANALYZER_NORETURN
22 #endif // ifndef CLANG_ANALYZER_NORETURN
23 #endif // __has_feature(attribute_analyzer_noreturn)
24 #else  // __clang__
25 #define CLANG_ANALYZER_NORETURN
26 #endif
27 
28 #if defined(__cplusplus)
29 extern "C" {
30 #endif
31 
32 #if defined(__cplusplus)
33 }
34 #endif
35 
36 struct cubeb_ops {
37   int (*init)(cubeb ** context, char const * context_name);
38   char const * (*get_backend_id)(cubeb * context);
39   int (*get_max_channel_count)(cubeb * context, uint32_t * max_channels);
40   int (*get_min_latency)(cubeb * context, cubeb_stream_params params,
41                          uint32_t * latency_ms);
42   int (*get_preferred_sample_rate)(cubeb * context, uint32_t * rate);
43   int (*enumerate_devices)(cubeb * context, cubeb_device_type type,
44                            cubeb_device_collection * collection);
45   int (*device_collection_destroy)(cubeb * context,
46                                    cubeb_device_collection * collection);
47   void (*destroy)(cubeb * context);
48   int (*stream_init)(cubeb * context, cubeb_stream ** stream,
49                      char const * stream_name, cubeb_devid input_device,
50                      cubeb_stream_params * input_stream_params,
51                      cubeb_devid output_device,
52                      cubeb_stream_params * output_stream_params,
53                      unsigned int latency, cubeb_data_callback data_callback,
54                      cubeb_state_callback state_callback, void * user_ptr);
55   void (*stream_destroy)(cubeb_stream * stream);
56   int (*stream_start)(cubeb_stream * stream);
57   int (*stream_stop)(cubeb_stream * stream);
58   int (*stream_get_position)(cubeb_stream * stream, uint64_t * position);
59   int (*stream_get_latency)(cubeb_stream * stream, uint32_t * latency);
60   int (*stream_get_input_latency)(cubeb_stream * stream, uint32_t * latency);
61   int (*stream_set_volume)(cubeb_stream * stream, float volumes);
62   int (*stream_set_name)(cubeb_stream * stream, char const * stream_name);
63   int (*stream_get_current_device)(cubeb_stream * stream,
64                                    cubeb_device ** const device);
65   int (*stream_device_destroy)(cubeb_stream * stream, cubeb_device * device);
66   int (*stream_register_device_changed_callback)(
67       cubeb_stream * stream,
68       cubeb_device_changed_callback device_changed_callback);
69   int (*register_device_collection_changed)(
70       cubeb * context, cubeb_device_type devtype,
71       cubeb_device_collection_changed_callback callback, void * user_ptr);
72 };
73 
74 #endif /* CUBEB_INTERNAL_0eb56756_4e20_4404_a76d_42bf88cd15a5 */
75