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      1 /*
      2  * Copyright (C) 2007 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 #define LOG_TAG "GraphicBufferMapper"
     18 #define ATRACE_TAG ATRACE_TAG_GRAPHICS
     19 
     20 #include <stdint.h>
     21 #include <errno.h>
     22 
     23 #include <utils/Errors.h>
     24 #include <utils/Log.h>
     25 #include <utils/Trace.h>
     26 
     27 #include <ui/GraphicBufferMapper.h>
     28 #include <ui/Rect.h>
     29 
     30 #include <hardware/gralloc.h>
     31 
     32 
     33 namespace android {
     34 // ---------------------------------------------------------------------------
     35 
     36 ANDROID_SINGLETON_STATIC_INSTANCE( GraphicBufferMapper )
     37 
     38 GraphicBufferMapper::GraphicBufferMapper()
     39     : mAllocMod(0)
     40 {
     41     hw_module_t const* module;
     42     int err = hw_get_module(GRALLOC_HARDWARE_MODULE_ID, &module);
     43     ALOGE_IF(err, "FATAL: can't find the %s module", GRALLOC_HARDWARE_MODULE_ID);
     44     if (err == 0) {
     45         mAllocMod = (gralloc_module_t const *)module;
     46     }
     47 }
     48 
     49 status_t GraphicBufferMapper::registerBuffer(buffer_handle_t handle)
     50 {
     51     ATRACE_CALL();
     52     status_t err;
     53 
     54     err = mAllocMod->registerBuffer(mAllocMod, handle);
     55 
     56     ALOGW_IF(err, "registerBuffer(%p) failed %d (%s)",
     57             handle, err, strerror(-err));
     58     return err;
     59 }
     60 
     61 status_t GraphicBufferMapper::unregisterBuffer(buffer_handle_t handle)
     62 {
     63     ATRACE_CALL();
     64     status_t err;
     65 
     66     err = mAllocMod->unregisterBuffer(mAllocMod, handle);
     67 
     68     ALOGW_IF(err, "unregisterBuffer(%p) failed %d (%s)",
     69             handle, err, strerror(-err));
     70     return err;
     71 }
     72 
     73 status_t GraphicBufferMapper::lock(buffer_handle_t handle,
     74         int usage, const Rect& bounds, void** vaddr)
     75 {
     76     ATRACE_CALL();
     77     status_t err;
     78 
     79     err = mAllocMod->lock(mAllocMod, handle, usage,
     80             bounds.left, bounds.top, bounds.width(), bounds.height(),
     81             vaddr);
     82 
     83     ALOGW_IF(err, "lock(...) failed %d (%s)", err, strerror(-err));
     84     return err;
     85 }
     86 
     87 status_t GraphicBufferMapper::lockYCbCr(buffer_handle_t handle,
     88         int usage, const Rect& bounds, android_ycbcr *ycbcr)
     89 {
     90     ATRACE_CALL();
     91     status_t err;
     92 
     93     err = mAllocMod->lock_ycbcr(mAllocMod, handle, usage,
     94             bounds.left, bounds.top, bounds.width(), bounds.height(),
     95             ycbcr);
     96 
     97     ALOGW_IF(err, "lock(...) failed %d (%s)", err, strerror(-err));
     98     return err;
     99 }
    100 
    101 status_t GraphicBufferMapper::unlock(buffer_handle_t handle)
    102 {
    103     ATRACE_CALL();
    104     status_t err;
    105 
    106     err = mAllocMod->unlock(mAllocMod, handle);
    107 
    108     ALOGW_IF(err, "unlock(...) failed %d (%s)", err, strerror(-err));
    109     return err;
    110 }
    111 
    112 // ---------------------------------------------------------------------------
    113 }; // namespace android
    114