Home | History | Annotate | Download | only in adfhwc 
      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 #include <hardware/hwcomposer2.h>
     27 
     28 struct adf_hwc_helper;
     29 
     30 struct adf_hwc_event_callbacks {
     31     /**
     32      * Called on vsync (required)
     33      */
     34     void (*vsync)(void *data, int disp, uint64_t timestamp);
     35     /**
     36      * Called on hotplug (required)
     37      */
     38     void (*hotplug)(void *data, int disp, bool connected);
     39     /**
     40      * Called on hardware-custom ADF events (optional)
     41      */
     42     void (*custom_event)(void *data, int disp, struct adf_event *event);
     43 };
     44 
     45 /**
     46  * Converts HAL pixel formats to equivalent ADF/DRM format FourCCs.
     47  */
     48 static inline uint32_t adf_fourcc_for_hal_pixel_format(int format)
     49 {
     50     switch (format) {
     51     case HAL_PIXEL_FORMAT_RGBA_8888:
     52         return DRM_FORMAT_RGBA8888;
     53     case HAL_PIXEL_FORMAT_RGBX_8888:
     54         return DRM_FORMAT_RGBX8888;
     55     case HAL_PIXEL_FORMAT_RGB_888:
     56         return DRM_FORMAT_RGB888;
     57     case HAL_PIXEL_FORMAT_RGB_565:
     58         return DRM_FORMAT_RGB565;
     59     case HAL_PIXEL_FORMAT_BGRA_8888:
     60         return DRM_FORMAT_BGRA8888;
     61     case HAL_PIXEL_FORMAT_YV12:
     62         return DRM_FORMAT_YVU420;
     63     case HAL_PIXEL_FORMAT_YCbCr_422_SP:
     64         return DRM_FORMAT_NV16;
     65     case HAL_PIXEL_FORMAT_YCrCb_420_SP:
     66         return DRM_FORMAT_NV21;
     67     case HAL_PIXEL_FORMAT_YCbCr_422_I:
     68         return DRM_FORMAT_YUYV;
     69     default:
     70         return 0;
     71     }
     72 }
     73 
     74 /**
     75  * Converts HAL display types to equivalent ADF interface flags.
     76  */
     77 static inline uint32_t adf_hwc_interface_flag_for_disp(int disp)
     78 {
     79     switch (disp) {
     80     case HWC_DISPLAY_PRIMARY:
     81         return ADF_INTF_FLAG_PRIMARY;
     82     case HWC_DISPLAY_EXTERNAL:
     83         return ADF_INTF_FLAG_EXTERNAL;
     84     default:
     85         return 0;
     86     }
     87 }
     88 
     89 __BEGIN_DECLS
     90 
     91 /**
     92  * Create a HWC helper for the specified ADF interfaces.
     93  *
     94  * intf_fds must be indexed by HWC display type: e.g.,
     95  * intf_fds[HWC_DISPLAY_PRIMARY] is the fd for the primary display
     96  * interface.  n_intfs must be >= 1.
     97  *
     98  * The caller retains ownership of the fds in intf_fds and must close()
     99  * them when they are no longer needed.
    100  *
    101  * On error, returns -errno.
    102  */
    103 int adf_hwc_open(int *intf_fds, size_t n_intfs,
    104         const struct adf_hwc_event_callbacks *event_cb, void *event_cb_data,
    105         struct adf_hwc_helper **dev);
    106 
    107 /**
    108  * Destroys a HWC helper.
    109  */
    110 void adf_hwc_close(struct adf_hwc_helper *dev);
    111 
    112 /**
    113  * Generic implementations of common HWC ops.
    114  *
    115  * The HWC should not point its ops directly at these helpers.  Instead, the HWC
    116  * should provide stub ops which call these helpers after converting the
    117  * hwc_composer_device_1* to a struct adf_hwc_helper*.
    118  */
    119 int adf_eventControl(struct adf_hwc_helper *dev, int disp, int event,
    120         int enabled);
    121 int adf_blank(struct adf_hwc_helper *dev, int disp, int blank);
    122 int adf_query_display_types_supported(struct adf_hwc_helper *dev, int *value);
    123 int adf_getDisplayConfigs(struct adf_hwc_helper *dev, int disp,
    124         uint32_t *configs, size_t *numConfigs);
    125 int adf_getDisplayAttributes(struct adf_hwc_helper *dev, int disp,
    126         uint32_t config, const uint32_t *attributes, int32_t *values);
    127 /**
    128  * Generic implementation of common HWC2 functions.
    129  *
    130  * The HWC2 should not return these functions directly through getFunction.
    131  * Instead, the HWC2 should return stub functions which call these helpers.
    132  */
    133 int adf_getDisplayAttributes_hwc2(struct adf_hwc_helper *dev, int disp,
    134         uint32_t config, const uint32_t *attributes, int32_t *values);
    135 int adf_set_active_config_hwc2(struct adf_hwc_helper *dev, int disp,
    136         uint32_t config);
    137 
    138 __END_DECLS
    139 
    140 #endif /* _LIBADFHWC_ADFHWC_H_ */
    141