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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef MEDIA_VIDEO_H264_POC_H_
#define MEDIA_VIDEO_H264_POC_H_
#include <stdint.h>
#include "base/macros.h"
namespace media {
struct H264SPS;
struct H264SliceHeader;
class MEDIA_EXPORT H264POC {
public:
H264POC();
~H264POC();
// Compute the picture order count for a slice, storing the result into
// |*pic_order_cnt|.
bool ComputePicOrderCnt(
const H264SPS* sps,
const H264SliceHeader& slice_hdr,
int32_t* pic_order_cnt);
// Reset computation state. It's best (although not strictly required) to call
// this after a seek.
void Reset();
private:
int32_t ref_pic_order_cnt_msb_;
int32_t ref_pic_order_cnt_lsb_;
int32_t prev_frame_num_;
int32_t prev_frame_num_offset_;
DISALLOW_COPY_AND_ASSIGN(H264POC);
};
} // namespace media
#endif // MEDIA_VIDEO_H264_POC_H_
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