Wind Yuan | 4bbe4ec | 2015-04-02 18:00:35 +0800 | [diff] [blame] | 1 | /* |
| 2 | * buffer_pool.cpp - buffer pool |
| 3 | * |
| 4 | * Copyright (c) 2014-2015 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 "xcam_utils.h" |
| 22 | #include "buffer_pool.h" |
| 23 | |
| 24 | namespace XCam { |
| 25 | |
| 26 | BufferProxy::BufferProxy (const VideoBufferInfo &info, const SmartPtr<BufferData> &data) |
| 27 | : VideoBuffer (info) |
| 28 | , _data (data) |
| 29 | { |
| 30 | XCAM_ASSERT (data.ptr ()); |
| 31 | } |
| 32 | |
| 33 | BufferProxy::BufferProxy (const SmartPtr<BufferData> &data) |
| 34 | : _data (data) |
| 35 | { |
| 36 | XCAM_ASSERT (data.ptr ()); |
| 37 | } |
| 38 | |
| 39 | BufferProxy::~BufferProxy () |
| 40 | { |
| 41 | if (_pool.ptr ()) { |
| 42 | _pool->release (_data); |
| 43 | } |
| 44 | _data.release (); |
| 45 | _parent.release (); |
| 46 | } |
| 47 | |
| 48 | uint8_t * |
| 49 | BufferProxy::map () |
| 50 | { |
| 51 | XCAM_ASSERT (_data.ptr ()); |
| 52 | return _data->map (); |
| 53 | } |
| 54 | |
| 55 | bool |
| 56 | BufferProxy::unmap () |
| 57 | { |
| 58 | XCAM_ASSERT (_data.ptr ()); |
| 59 | return _data->unmap (); |
| 60 | } |
| 61 | |
Jia Meng | 10a616d | 2015-04-23 20:57:09 +0000 | [diff] [blame] | 62 | int |
| 63 | BufferProxy::get_fd () |
| 64 | { |
| 65 | XCAM_ASSERT (_data.ptr ()); |
| 66 | return _data->get_fd (); |
| 67 | } |
| 68 | |
Wind Yuan | 4bbe4ec | 2015-04-02 18:00:35 +0800 | [diff] [blame] | 69 | BufferPool::BufferPool () |
| 70 | : _allocated_num (0) |
| 71 | , _max_count (0) |
| 72 | , _started (false) |
| 73 | { |
| 74 | } |
| 75 | |
| 76 | BufferPool::~BufferPool () |
| 77 | { |
| 78 | } |
| 79 | |
| 80 | bool |
| 81 | BufferPool::set_video_info (const VideoBufferInfo &info) |
| 82 | { |
| 83 | VideoBufferInfo new_info = info; |
| 84 | SmartLock lock (_mutex); |
| 85 | |
| 86 | XCAM_FAIL_RETURN ( |
| 87 | ERROR, |
| 88 | fixate_video_info (new_info), |
| 89 | false, |
| 90 | "BufferPool fixate video info failed"); |
| 91 | _buffer_info = new_info; |
| 92 | return true; |
| 93 | } |
| 94 | |
| 95 | bool |
| 96 | BufferPool::reserve (uint32_t max_count) |
| 97 | { |
| 98 | uint32_t i = 0; |
| 99 | |
Wind Yuan | 4bbe4ec | 2015-04-02 18:00:35 +0800 | [diff] [blame] | 100 | XCAM_ASSERT (max_count); |
| 101 | |
| 102 | SmartLock lock (_mutex); |
| 103 | |
Wind Yuan | b90a89c | 2015-04-08 18:38:53 +0800 | [diff] [blame] | 104 | for (i = _allocated_num; i < max_count; ++i) { |
Wind Yuan | 4bbe4ec | 2015-04-02 18:00:35 +0800 | [diff] [blame] | 105 | SmartPtr<BufferData> new_data = allocate_data (_buffer_info); |
| 106 | if (!new_data.ptr ()) |
| 107 | break; |
| 108 | _buf_list.push (new_data); |
| 109 | } |
| 110 | |
| 111 | XCAM_FAIL_RETURN ( |
| 112 | ERROR, |
| 113 | i > 0, |
| 114 | false, |
| 115 | "BufferPool reserve failed with none buffer data allocated"); |
| 116 | |
| 117 | if (i != max_count) { |
| 118 | XCAM_LOG_WARNING ("BufferPool expect to reserve %d data but only reserved %d", max_count, i); |
| 119 | } |
| 120 | _max_count = i; |
Wind Yuan | b90a89c | 2015-04-08 18:38:53 +0800 | [diff] [blame] | 121 | _allocated_num = _max_count; |
Wind Yuan | 4bbe4ec | 2015-04-02 18:00:35 +0800 | [diff] [blame] | 122 | _started = true; |
| 123 | |
| 124 | return true; |
| 125 | } |
| 126 | |
Wind Yuan | b90a89c | 2015-04-08 18:38:53 +0800 | [diff] [blame] | 127 | bool |
| 128 | BufferPool::add_data_unsafe (SmartPtr<BufferData> data) |
| 129 | { |
| 130 | if (!data.ptr ()) |
| 131 | return false; |
| 132 | |
| 133 | _buf_list.push (data); |
| 134 | ++_allocated_num; |
| 135 | |
| 136 | XCAM_ASSERT (_allocated_num <= _max_count || !_max_count); |
| 137 | return true; |
| 138 | } |
| 139 | |
Wind Yuan | 4bbe4ec | 2015-04-02 18:00:35 +0800 | [diff] [blame] | 140 | SmartPtr<BufferProxy> |
| 141 | BufferPool::get_buffer (const SmartPtr<BufferPool> &self) |
| 142 | { |
| 143 | SmartPtr<BufferProxy> ret_buf; |
| 144 | SmartPtr<BufferData> data; |
| 145 | |
| 146 | { |
| 147 | SmartLock lock (_mutex); |
| 148 | if (!_started) |
| 149 | return NULL; |
| 150 | } |
| 151 | |
| 152 | XCAM_ASSERT (self.ptr () == this); |
| 153 | XCAM_FAIL_RETURN( |
| 154 | WARNING, |
| 155 | self.ptr () == this, |
| 156 | NULL, |
| 157 | "BufferPool get_buffer failed since parameter<self> not this"); |
| 158 | |
| 159 | data = _buf_list.pop (); |
| 160 | if (!data.ptr ()) { |
| 161 | XCAM_LOG_DEBUG ("BufferPool failed to get buffer"); |
| 162 | return NULL; |
| 163 | } |
| 164 | ret_buf = create_buffer_from_data (data); |
| 165 | ret_buf->set_buf_pool (self); |
| 166 | |
| 167 | return ret_buf; |
| 168 | } |
| 169 | |
| 170 | void |
| 171 | BufferPool::stop () |
| 172 | { |
| 173 | { |
| 174 | SmartLock lock (_mutex); |
| 175 | _started = false; |
| 176 | } |
| 177 | _buf_list.wakeup (); |
| 178 | } |
| 179 | |
| 180 | void |
| 181 | BufferPool::release (SmartPtr<BufferData> &data) |
| 182 | { |
| 183 | { |
| 184 | SmartLock lock (_mutex); |
| 185 | if (!_started) |
| 186 | return; |
| 187 | } |
| 188 | _buf_list.push (data); |
| 189 | } |
| 190 | |
| 191 | bool |
| 192 | BufferPool::fixate_video_info (VideoBufferInfo &info) |
| 193 | { |
| 194 | XCAM_UNUSED (info); |
| 195 | return true; |
| 196 | } |
| 197 | |
| 198 | SmartPtr<BufferProxy> |
| 199 | BufferPool::create_buffer_from_data (SmartPtr<BufferData> &data) |
| 200 | { |
| 201 | const VideoBufferInfo &info = get_video_info (); |
| 202 | |
| 203 | XCAM_ASSERT (data.ptr ()); |
| 204 | return new BufferProxy (info, data); |
| 205 | } |
| 206 | |
| 207 | }; |