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      1 /*
      2 ** Copyright (c) 2011 The Linux Foundation. All rights reserved.
      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 /*#error uncomment this for compiler test!*/
     18 
     19 //#define LOG_NDEBUG 0
     20 #define LOG_NIDEBUG 0
     21 #define LOG_TAG "QCameraHAL"
     22 #include <utils/Log.h>
     23 #include <utils/threads.h>
     24 #include <fcntl.h>
     25 #include <sys/mman.h>
     26 
     27 
     28 /* include QCamera Hardware Interface Header*/
     29 #include "QCameraHAL.h"
     30 
     31 int HAL_numOfCameras = 0;
     32 qcamera_info_t HAL_cameraInfo[MSM_MAX_CAMERA_SENSORS];
     33 mm_camera_t * HAL_camerahandle[MSM_MAX_CAMERA_SENSORS];
     34 int HAL_currentCameraMode;
     35 
     36 namespace android {
     37 /* HAL function implementation goes here*/
     38 
     39 /**
     40  * The functions need to be provided by the camera HAL.
     41  *
     42  * If getNumberOfCameras() returns N, the valid cameraId for getCameraInfo()
     43  * and openCameraHardware() is 0 to N-1.
     44  */
     45 extern "C" int HAL_getNumberOfCameras()
     46 {
     47     /* try to query every time we get the call!*/
     48     uint8_t num_camera = 0;
     49     mm_camera_t * handle_base = 0;
     50     LOGV("%s: E", __func__);
     51 
     52     handle_base= mm_camera_query(&num_camera);
     53 
     54     if (!handle_base) {
     55         HAL_numOfCameras = 0;
     56     }
     57     else
     58     {
     59         qcamera_info_t* p_camera_info = 0;
     60         HAL_numOfCameras=num_camera;
     61 
     62         LOGI("Handle base =0x%p",handle_base);
     63         LOGI("getCameraInfo: numOfCameras = %d", HAL_numOfCameras);
     64         for(int i = 0; i < HAL_numOfCameras; i++) {
     65             LOGI("Handle [%d]=0x%p",i,handle_base+i);
     66             HAL_camerahandle[i]=handle_base + i;
     67             p_camera_info = &(HAL_camerahandle[i]->camera_info);
     68             if (p_camera_info) {
     69                 LOGI("Camera sensor %d info:", i);
     70                 LOGI("camera_id: %d", p_camera_info->camera_id);
     71                 LOGI("modes_supported: %x", p_camera_info->modes_supported);
     72                 LOGI("position: %d", p_camera_info->position);
     73                 LOGI("sensor_mount_angle: %d", p_camera_info->sensor_mount_angle);
     74             }
     75         }
     76     }
     77 
     78     LOGV("%s: X", __func__);
     79 
     80     return HAL_numOfCameras;
     81 }
     82 
     83 extern "C" int HAL_isIn3DMode()
     84 {
     85     return HAL_currentCameraMode == CAMERA_MODE_3D;
     86 }
     87 
     88 extern "C" void HAL_getCameraInfo(int cameraId, struct CameraInfo* cameraInfo)
     89 {
     90     mm_camera_t *mm_camer_obj = 0;
     91     LOGV("%s: E", __func__);
     92 
     93     if (!HAL_numOfCameras || HAL_numOfCameras < cameraId || !cameraInfo)
     94         return;
     95     else
     96         mm_camer_obj = HAL_camerahandle[cameraId];
     97 
     98     if (!mm_camer_obj)
     99         return;
    100     else {
    101         cameraInfo->facing =
    102             (FRONT_CAMERA == mm_camer_obj->camera_info.position)?
    103             CAMERA_FACING_FRONT : CAMERA_FACING_BACK;
    104 
    105         cameraInfo->orientation = mm_camer_obj->camera_info.sensor_mount_angle;
    106 #if 0
    107         // TODO: fix me
    108         /* We always supprot ZSL in our stack*/
    109         cameraInfo->mode = CAMERA_SUPPORT_MODE_ZSL;
    110         if (mm_camer_obj->camera_info.modes_supported & CAMERA_MODE_2D) {
    111             cameraInfo->mode |= CAMERA_SUPPORT_MODE_2D;
    112         }
    113         if (mm_camer_obj->camera_info.modes_supported & CAMERA_MODE_3D) {
    114             cameraInfo->mode |= CAMERA_SUPPORT_MODE_3D;
    115         }
    116 #endif
    117     }
    118    LOGV("%s: X", __func__);
    119    return;
    120 }
    121 
    122 /* HAL should return NULL if it fails to open camera hardware. */
    123 extern "C" void * HAL_openCameraHardware(int cameraId, int mode)
    124 {
    125     LOGV("%s: E", __func__);
    126     if (!HAL_numOfCameras || HAL_numOfCameras < cameraId ||cameraId < 0) {
    127       return NULL;
    128     }
    129     return QCameraHAL_openCameraHardware(cameraId, mode);
    130 }
    131 
    132 
    133 }; // namespace android
    134