src/cobalt/media/decoder_buffer_allocator.cc

// Copyright 2017 Google Inc. All Rights Reserved.
//
// 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 "cobalt/media/decoder_buffer_allocator.h"

#include "starboard/common/scoped_ptr.h"
#include "starboard/configuration.h"
#include "starboard/memory.h"

namespace cobalt {
namespace media {

namespace {
bool kPreAllocateAllMemory = true;
}  // namespace

DecoderBufferAllocator::DecoderBufferAllocator()
    : memory_block_(
          SbMemoryAllocateAligned(DecoderBuffer::kAlignmentSize,
                                  COBALT_MEDIA_BUFFER_INITIAL_CAPACITY)) {
  memory_pool_.set(starboard::make_scoped_ptr(
      new nb::MemoryPool(memory_block_, COBALT_MEDIA_BUFFER_INITIAL_CAPACITY,
                         kPreAllocateAllMemory)));
}

DecoderBufferAllocator::~DecoderBufferAllocator() {
  DCHECK_EQ(memory_pool_->GetAllocated(), 0);
  SbMemoryDeallocateAligned(memory_block_);
}

void* DecoderBufferAllocator::Allocate(Type type, size_t size,
                                       size_t alignment) {
  UNREFERENCED_PARAMETER(type);
  return memory_pool_->Allocate(size, alignment);
}

void DecoderBufferAllocator::Free(Type type, void* ptr) {
  UNREFERENCED_PARAMETER(type);
  memory_pool_->Free(ptr);
}

}  // namespace media
}  // namespace cobalt