frameworks/base: switch CameraService to a HAL module
This patch changes CameraService to load a camera HAL module, instead of
linking directly against a library that implements the CameraHardwareInterface
class.
CameraHardwareInterface no longer defines the API to the camera HAL. Instead,
this is now in HAL header hardware/camera.h. We keep CamerHardwareInterface as
a class local to CameraService, which wraps around the new HAL calls. In the
future, we may remove this class entirely and have CameraService call the HAL
methods directly.
Change-Id: I5c61ac40078fc0b50bbac5881a556fe6c8837641
Signed-off-by: Iliyan Malchev <malchev@google.com>
diff --git a/services/camera/libcameraservice/CameraService.cpp b/services/camera/libcameraservice/CameraService.cpp
index 56c9246..1e8c30b 100644
--- a/services/camera/libcameraservice/CameraService.cpp
+++ b/services/camera/libcameraservice/CameraService.cpp
@@ -16,6 +16,7 @@
*/
#define LOG_TAG "CameraService"
+//#define LOG_NDEBUG 0
#include <stdio.h>
#include <sys/types.h>
@@ -37,6 +38,7 @@
#include <utils/String16.h>
#include "CameraService.h"
+#include "CameraHardwareInterface.h"
namespace android {
@@ -69,24 +71,34 @@
static CameraService *gCameraService;
CameraService::CameraService()
-:mSoundRef(0)
+:mSoundRef(0), mModule(0)
{
LOGI("CameraService started (pid=%d)", getpid());
-
- mNumberOfCameras = HAL_getNumberOfCameras();
- if (mNumberOfCameras > MAX_CAMERAS) {
- LOGE("Number of cameras(%d) > MAX_CAMERAS(%d).",
- mNumberOfCameras, MAX_CAMERAS);
- mNumberOfCameras = MAX_CAMERAS;
- }
-
- for (int i = 0; i < mNumberOfCameras; i++) {
- setCameraFree(i);
- }
-
gCameraService = this;
}
+void CameraService::onFirstRef()
+{
+ BnCameraService::onFirstRef();
+
+ if (hw_get_module(CAMERA_HARDWARE_MODULE_ID,
+ (const hw_module_t **)&mModule) < 0) {
+ LOGE("Could not load camera HAL module");
+ mNumberOfCameras = 0;
+ }
+ else {
+ mNumberOfCameras = mModule->get_number_of_cameras();
+ if (mNumberOfCameras > MAX_CAMERAS) {
+ LOGE("Number of cameras(%d) > MAX_CAMERAS(%d).",
+ mNumberOfCameras, MAX_CAMERAS);
+ mNumberOfCameras = MAX_CAMERAS;
+ }
+ for (int i = 0; i < mNumberOfCameras; i++) {
+ setCameraFree(i);
+ }
+ }
+}
+
CameraService::~CameraService() {
for (int i = 0; i < mNumberOfCameras; i++) {
if (mBusy[i]) {
@@ -103,12 +115,19 @@
status_t CameraService::getCameraInfo(int cameraId,
struct CameraInfo* cameraInfo) {
+ if (!mModule) {
+ return NO_INIT;
+ }
+
if (cameraId < 0 || cameraId >= mNumberOfCameras) {
return BAD_VALUE;
}
- HAL_getCameraInfo(cameraId, cameraInfo);
- return OK;
+ struct camera_info info;
+ status_t rc = mModule->get_camera_info(cameraId, &info);
+ cameraInfo->facing = info.facing;
+ cameraInfo->orientation = info.orientation;
+ return rc;
}
sp<ICamera> CameraService::connect(
@@ -116,6 +135,11 @@
int callingPid = getCallingPid();
LOG1("CameraService::connect E (pid %d, id %d)", callingPid, cameraId);
+ if (!mModule) {
+ LOGE("Camera HAL module not loaded");
+ return NULL;
+ }
+
sp<Client> client;
if (cameraId < 0 || cameraId >= mNumberOfCameras) {
LOGE("CameraService::connect X (pid %d) rejected (invalid cameraId %d).",
@@ -146,15 +170,19 @@
return NULL;
}
- sp<CameraHardwareInterface> hardware = HAL_openCameraHardware(cameraId);
- if (hardware == NULL) {
- LOGE("Fail to open camera hardware (id=%d)", cameraId);
+ struct camera_info info;
+ if (mModule->get_camera_info(cameraId, &info) != OK) {
+ LOGE("Invalid camera id %d", cameraId);
return NULL;
}
- CameraInfo info;
- HAL_getCameraInfo(cameraId, &info);
- client = new Client(this, cameraClient, hardware, cameraId, info.facing,
- callingPid);
+
+ char camera_device_name[10];
+ snprintf(camera_device_name, sizeof(camera_device_name), "%d", cameraId);
+
+ client = new Client(this, cameraClient,
+ new CameraHardwareInterface(&mModule->common,
+ camera_device_name),
+ cameraId, info.facing, callingPid);
mClient[cameraId] = client;
LOG1("CameraService::connect X");
return client;