| /* ------------------------------------------------------------------ |
| * Copyright (C) 1998-2009 PacketVideo |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either |
| * express or implied. |
| * See the License for the specific language governing permissions |
| * and limitations under the License. |
| * ------------------------------------------------------------------- |
| */ |
| |
| #include "media_fragment.h" |
| |
| |
| OSCL_EXPORT_REF MediaFragment::MediaFragment(const MediaFragment& that, OsclAny* ptr, int32 len): |
| _fragment(that._fragment), _state(that._state) |
| { |
| if (_state) |
| _state->increment_refcnt(); |
| if (ptr && (len > 0)) |
| { |
| if ((ptr >= _fragment.ptr && ptr < ((uint8*)_fragment.ptr + _fragment.len)) && |
| (((uint8*)ptr + len) <= ((uint8*)_fragment.ptr + _fragment.len))) |
| { |
| _fragment.ptr = ptr; |
| _fragment.len = len; |
| } |
| } |
| } |
| |
| // Default fragment allocator. Just malloc's and free's memory as needed. |
| OSCL_EXPORT_REF MediaFragment* DefFragmentAllocator::allocate_fragment(uint32 sz) |
| { |
| BufferFragment frag; |
| BufferState* state = NULL; |
| |
| frag.ptr = OSCL_DEFAULT_MALLOC(sz); |
| frag.len = sz; |
| state = OSCL_NEW(BufferState, (&buffer_state_listener, frag.ptr)); |
| return OSCL_NEW(MediaFragment, (frag, state)); |
| } |
| |
| OSCL_EXPORT_REF MediaFragment* DefFragmentAllocator::allocate_fragment(MediaFragment* fragment, |
| OsclAny* ptr, uint32 len) |
| { |
| return OSCL_NEW(MediaFragment, (*fragment, ptr, len)); |
| } |
| |
| |
| OSCL_EXPORT_REF int32 DefFragmentAllocator::deallocate_fragment(MediaFragment* fragment) |
| { |
| OSCL_DELETE(fragment); |
| return 1; |
| } |
| |
| |
| |
| // Buffer pool manager. Frees the buffer back to the pool. |
| OSCL_EXPORT_REF OsclAny BufferPoolMgr::BufferReleased(OsclAny* ptr, BufferState* state) |
| { |
| OSCL_UNUSED_ARG(state); |
| |
| BufferStateEntry *entry = (BufferStateEntry *) ptr; |
| pBufferPool->free_buffer_to_pool(entry); |
| } |
| |
| // Buffer fragment pool. Memory is pre-allocated at constructor time. |
| OSCL_EXPORT_REF PoolFragmentAllocator::PoolFragmentAllocator(int32 max_frags, int32 max_frag_size) |
| { |
| buffer_state_listener = OSCL_NEW(BufferPoolMgr, (this)); |
| |
| num_frags = max_frags; |
| frag_size = max_frag_size; |
| entire_list = new BufferStateEntry[max_frags]; |
| free_list = entire_list; |
| buffer = (uint8 *) OSCL_DEFAULT_MALLOC((max_frags * max_frag_size)); |
| oscl_memset(buffer, 0, (max_frags * max_frag_size)); |
| |
| int32 i; |
| for (i = 0; i < max_frags; i++) |
| { |
| entire_list[i].buf_state.bind(&entire_list[i], buffer_state_listener); |
| entire_list[i].frag.ptr = buffer + (i * max_frag_size); |
| entire_list[i].frag.len = max_frag_size; |
| if (i > 0) |
| { |
| entire_list[i-1].next_entry = &entire_list[i]; |
| } |
| } |
| entire_list[i-1].next_entry = NULL; |
| } |
| |
| OSCL_EXPORT_REF PoolFragmentAllocator::~PoolFragmentAllocator() |
| { |
| for (int32 i = 0; i < num_frags; i++) |
| { |
| if (entire_list[i].buf_state.get_refcount() > 0) |
| { |
| OSCL_ASSERT(0); |
| } |
| } |
| |
| if (buffer) OSCL_DEFAULT_FREE(buffer); |
| if (entire_list) delete[] entire_list; |
| if (buffer_state_listener) OSCL_DELETE(buffer_state_listener); |
| } |
| |
| OSCL_EXPORT_REF MediaFragment* PoolFragmentAllocator::allocate_fragment(uint32 sz) |
| { |
| BufferStateEntry *entry; |
| |
| if (free_list && ((int32) sz <= frag_size)) |
| { |
| entry = free_list; |
| free_list = free_list->next_entry; |
| |
| entry->next_entry = NULL; |
| entry->frag.len = sz; |
| entry->media_frag.Set(entry->frag, &entry->buf_state); |
| |
| return &entry->media_frag; |
| } |
| else |
| { |
| return NULL; |
| } |
| } |
| |
| OSCL_EXPORT_REF MediaFragment* PoolFragmentAllocator::allocate_fragment(MediaFragment* fragment, |
| OsclAny* ptr, |
| uint32 len) |
| { |
| return OSCL_NEW(MediaFragment, (*fragment, ptr, len)); |
| } |
| |
| OSCL_EXPORT_REF int32 PoolFragmentAllocator::deallocate_fragment(MediaFragment* fragment) |
| { |
| fragment->Set(NULL, 0, NULL); |
| return 1; |
| } |
| |
| OsclAny PoolFragmentAllocator::free_buffer_to_pool(BufferStateEntry *entry) |
| { |
| entry->next_entry = free_list; |
| free_list = entry; |
| } |
| |
| |