1 /*
2 * Copyright (C) 2013 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #ifndef _LIBADFHWC_ADFHWC_H_
18 #define _LIBADFHWC_ADFHWC_H_
19
20 #include <stdbool.h>
21 #include <stdint.h>
22 #include <sys/cdefs.h>
23 #include <video/adf.h>
24
25 #include <hardware/hwcomposer.h>
26
27 struct adf_hwc_helper;
28
29 struct adf_hwc_event_callbacks {
30 /**
31 * Called on vsync (required)
32 */
33 void (*vsync)(void *data, int disp, uint64_t timestamp);
34 /**
35 * Called on hotplug (required)
36 */
37 void (*hotplug)(void *data, int disp, bool connected);
38 /**
39 * Called on hardware-custom ADF events (optional)
40 */
41 void (*custom_event)(void *data, int disp, struct adf_event *event);
42 };
43
44 /**
45 * Converts HAL pixel formats to equivalent ADF/DRM format FourCCs.
46 */
adf_fourcc_for_hal_pixel_format(int format)47 static inline uint32_t adf_fourcc_for_hal_pixel_format(int format)
48 {
49 switch (format) {
50 case HAL_PIXEL_FORMAT_RGBA_8888:
51 return DRM_FORMAT_RGBA8888;
52 case HAL_PIXEL_FORMAT_RGBX_8888:
53 return DRM_FORMAT_RGBX8888;
54 case HAL_PIXEL_FORMAT_RGB_888:
55 return DRM_FORMAT_RGB888;
56 case HAL_PIXEL_FORMAT_RGB_565:
57 return DRM_FORMAT_RGB565;
58 case HAL_PIXEL_FORMAT_BGRA_8888:
59 return DRM_FORMAT_BGRA8888;
60 case HAL_PIXEL_FORMAT_YV12:
61 return DRM_FORMAT_YVU420;
62 case HAL_PIXEL_FORMAT_YCbCr_422_SP:
63 return DRM_FORMAT_NV16;
64 case HAL_PIXEL_FORMAT_YCrCb_420_SP:
65 return DRM_FORMAT_NV21;
66 case HAL_PIXEL_FORMAT_YCbCr_422_I:
67 return DRM_FORMAT_YUYV;
68 default:
69 return 0;
70 }
71 }
72
73 /**
74 * Converts HAL display types to equivalent ADF interface flags.
75 */
adf_hwc_interface_flag_for_disp(int disp)76 static inline uint32_t adf_hwc_interface_flag_for_disp(int disp)
77 {
78 switch (disp) {
79 case HWC_DISPLAY_PRIMARY:
80 return ADF_INTF_FLAG_PRIMARY;
81 case HWC_DISPLAY_EXTERNAL:
82 return ADF_INTF_FLAG_EXTERNAL;
83 default:
84 return 0;
85 }
86 }
87
88 __BEGIN_DECLS
89
90 /**
91 * Create a HWC helper for the specified ADF interfaces.
92 *
93 * intf_fds must be indexed by HWC display type: e.g.,
94 * intf_fds[HWC_DISPLAY_PRIMARY] is the fd for the primary display
95 * interface. n_intfs must be >= 1.
96 *
97 * The caller retains ownership of the fds in intf_fds and must close()
98 * them when they are no longer needed.
99 *
100 * On error, returns -errno.
101 */
102 int adf_hwc_open(int *intf_fds, size_t n_intfs,
103 const struct adf_hwc_event_callbacks *event_cb, void *event_cb_data,
104 struct adf_hwc_helper **dev);
105
106 /**
107 * Destroys a HWC helper.
108 */
109 void adf_hwc_close(struct adf_hwc_helper *dev);
110
111 /**
112 * Generic implementations of common HWC ops.
113 *
114 * The HWC should not point its ops directly at these helpers. Instead, the HWC
115 * should provide stub ops which call these helpers after converting the
116 * hwc_composer_device_1* to a struct adf_hwc_helper*.
117 */
118 int adf_eventControl(struct adf_hwc_helper *dev, int disp, int event,
119 int enabled);
120 int adf_blank(struct adf_hwc_helper *dev, int disp, int blank);
121 int adf_query_display_types_supported(struct adf_hwc_helper *dev, int *value);
122 int adf_getDisplayConfigs(struct adf_hwc_helper *dev, int disp,
123 uint32_t *configs, size_t *numConfigs);
124 int adf_getDisplayAttributes(struct adf_hwc_helper *dev, int disp,
125 uint32_t config, const uint32_t *attributes, int32_t *values);
126
127 __END_DECLS
128
129 #endif /* _LIBADFHWC_ADFHWC_H_ */
130