| 1 | /***************************************************************************** |
| 2 | * Copyright (C) 2013 x265 project |
| 3 | * |
| 4 | * Authors: Gopu Govindaswamy <gopu@multicorewareinc.com> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA. |
| 19 | * |
| 20 | * This program is also available under a commercial proprietary license. |
| 21 | * For more information, contact us at license @ x265.com. |
| 22 | *****************************************************************************/ |
| 23 | |
| 24 | #include "common.h" |
| 25 | #include "piclist.h" |
| 26 | #include "frame.h" |
| 27 | |
| 28 | using namespace x265; |
| 29 | |
| 30 | void PicList::pushFront(Frame& curFrame) |
| 31 | { |
| 32 | X265_CHECK(!curFrame.m_next && !curFrame.m_prev, "piclist: picture already in list\n"); // ensure frame is not in a list |
| 33 | curFrame.m_next = m_start; |
| 34 | curFrame.m_prev = NULL; |
| 35 | |
| 36 | if (m_count) |
| 37 | { |
| 38 | m_start->m_prev = &curFrame; |
| 39 | m_start = &curFrame; |
| 40 | } |
| 41 | else |
| 42 | { |
| 43 | m_start = m_end = &curFrame; |
| 44 | } |
| 45 | m_count++; |
| 46 | } |
| 47 | |
| 48 | void PicList::pushBack(Frame& curFrame) |
| 49 | { |
| 50 | X265_CHECK(!curFrame.m_next && !curFrame.m_prev, "piclist: picture already in list\n"); // ensure frame is not in a list |
| 51 | curFrame.m_next = NULL; |
| 52 | curFrame.m_prev = m_end; |
| 53 | |
| 54 | if (m_count) |
| 55 | { |
| 56 | m_end->m_next = &curFrame; |
| 57 | m_end = &curFrame; |
| 58 | } |
| 59 | else |
| 60 | { |
| 61 | m_start = m_end = &curFrame; |
| 62 | } |
| 63 | m_count++; |
| 64 | } |
| 65 | |
| 66 | Frame *PicList::popFront() |
| 67 | { |
| 68 | if (m_start) |
| 69 | { |
| 70 | Frame *temp = m_start; |
| 71 | m_count--; |
| 72 | |
| 73 | if (m_count) |
| 74 | { |
| 75 | m_start = m_start->m_next; |
| 76 | m_start->m_prev = NULL; |
| 77 | } |
| 78 | else |
| 79 | { |
| 80 | m_start = m_end = NULL; |
| 81 | } |
| 82 | temp->m_next = temp->m_prev = NULL; |
| 83 | return temp; |
| 84 | } |
| 85 | else |
| 86 | return NULL; |
| 87 | } |
| 88 | |
| 89 | Frame* PicList::getPOC(int poc) |
| 90 | { |
| 91 | Frame *curFrame = m_start; |
| 92 | while (curFrame && curFrame->m_poc != poc) |
| 93 | curFrame = curFrame->m_next; |
| 94 | return curFrame; |
| 95 | } |
| 96 | |
| 97 | Frame *PicList::popBack() |
| 98 | { |
| 99 | if (m_end) |
| 100 | { |
| 101 | Frame* temp = m_end; |
| 102 | m_count--; |
| 103 | |
| 104 | if (m_count) |
| 105 | { |
| 106 | m_end = m_end->m_prev; |
| 107 | m_end->m_next = NULL; |
| 108 | } |
| 109 | else |
| 110 | { |
| 111 | m_start = m_end = NULL; |
| 112 | } |
| 113 | temp->m_next = temp->m_prev = NULL; |
| 114 | return temp; |
| 115 | } |
| 116 | else |
| 117 | return NULL; |
| 118 | } |
| 119 | |
| 120 | void PicList::remove(Frame& curFrame) |
| 121 | { |
| 122 | #if _DEBUG |
| 123 | Frame *tmp = m_start; |
| 124 | while (tmp && tmp != &curFrame) |
| 125 | { |
| 126 | tmp = tmp->m_next; |
| 127 | } |
| 128 | |
| 129 | X265_CHECK(tmp == &curFrame, "piclist: pic being removed was not in list\n"); // verify pic is in this list |
| 130 | #endif |
| 131 | |
| 132 | m_count--; |
| 133 | if (m_count) |
| 134 | { |
| 135 | if (m_start == &curFrame) |
| 136 | m_start = curFrame.m_next; |
| 137 | if (m_end == &curFrame) |
| 138 | m_end = curFrame.m_prev; |
| 139 | |
| 140 | if (curFrame.m_next) |
| 141 | curFrame.m_next->m_prev = curFrame.m_prev; |
| 142 | if (curFrame.m_prev) |
| 143 | curFrame.m_prev->m_next = curFrame.m_next; |
| 144 | } |
| 145 | else |
| 146 | { |
| 147 | m_start = m_end = NULL; |
| 148 | } |
| 149 | |
| 150 | curFrame.m_next = curFrame.m_prev = NULL; |
| 151 | } |