1/* 2 * soft_video_buf_allocator.cpp - soft video buffer allocator implementation 3 * 4 * Copyright (c) 2017 Intel Corporation 5 * 6 * Licensed under the Apache License, Version 2.0 (the "License"); 7 * you may not use this file except in compliance with the License. 8 * You may obtain a copy of the License at 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, software 13 * distributed under the License is distributed on an "AS IS" BASIS, 14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 15 * See the License for the specific language governing permissions and 16 * limitations under the License. 17 * 18 * Author: Wind Yuan <feng.yuan@intel.com> 19 */ 20 21#include "soft_video_buf_allocator.h" 22 23namespace XCam { 24 25class VideoMemData 26 : public BufferData 27{ 28public: 29 explicit VideoMemData (uint32_t size); 30 virtual ~VideoMemData (); 31 bool is_valid () const { 32 return (_mem_ptr ? true : false); 33 } 34 35 //derive from BufferData 36 virtual uint8_t *map (); 37 virtual bool unmap (); 38 39private: 40 uint8_t *_mem_ptr; 41 uint32_t _mem_size; 42}; 43 44VideoMemData::VideoMemData (uint32_t size) 45 : _mem_ptr (NULL) 46 , _mem_size (0) 47{ 48 XCAM_ASSERT (size > 0); 49 _mem_ptr = xcam_malloc_type_array (uint8_t, size); 50 if (_mem_ptr) 51 _mem_size = size; 52} 53 54VideoMemData::~VideoMemData () 55{ 56 xcam_free (_mem_ptr); 57} 58 59uint8_t * 60VideoMemData::map () 61{ 62 XCAM_ASSERT (_mem_ptr); 63 return _mem_ptr; 64} 65 66bool 67VideoMemData::unmap () 68{ 69 return true; 70} 71 72SoftVideoBufAllocator::SoftVideoBufAllocator () 73{ 74} 75 76SoftVideoBufAllocator::SoftVideoBufAllocator (const VideoBufferInfo &info) 77{ 78 set_video_info (info); 79} 80 81SoftVideoBufAllocator::~SoftVideoBufAllocator () 82{ 83} 84 85SmartPtr<BufferData> 86SoftVideoBufAllocator::allocate_data (const VideoBufferInfo &buffer_info) 87{ 88 XCAM_FAIL_RETURN ( 89 ERROR, buffer_info.size, NULL, 90 "SoftVideoBufAllocator allocate data failed. buf_size is zero"); 91 92 SmartPtr<VideoMemData> data = new VideoMemData (buffer_info.size); 93 XCAM_FAIL_RETURN ( 94 ERROR, data.ptr () && data->is_valid (), NULL, 95 "SoftVideoBufAllocator allocate data failed. buf_size:%d", buffer_info.size); 96 97 return data; 98} 99 100} 101 102