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/*
* Copyright (c) 2019 The WebM project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#ifndef VPX_VP9_SIMPLE_ENCODE_H_
#define VPX_VP9_SIMPLE_ENCODE_H_
#include <memory>
#include <vector>
namespace vp9 {
enum FrameType {
kKeyFrame = 0,
kInterFrame,
kAlternateReference,
};
struct EncodeFrameResult {
int show_idx;
FrameType frame_type;
size_t coding_data_bit_size;
size_t coding_data_byte_size;
// The EncodeFrame will allocate a buffer, write the coding data into the
// buffer and give the ownership of the buffer to coding_data
std::unique_ptr<unsigned char[]> coding_data;
double psnr;
uint64_t sse;
int quantize_index;
};
class SimpleEncode {
public:
SimpleEncode(int frame_width, int frame_height, int frame_rate_num,
int frame_rate_den, int target_bitrate, int num_frames,
const char *infile_path);
~SimpleEncode();
SimpleEncode(SimpleEncode &&) = delete;
SimpleEncode &operator=(SimpleEncode &&) = delete;
// Makes encoder compute the first pass stats and store it internally for
// future encode
void ComputeFirstPassStats();
// Output the first pass stats
std::vector<std::vector<double>> ObserveFirstPassStats();
// Initialize the encoder for actual encoding
// This funtion should be called after ComputeFirstPassStats()
void StartEncode();
// Free the encoder
// This funtion should be called after StartEncode() or EncodeFrame()
void EndEncode();
// Encode a frame
// This funtion should be called after StartEncode() before EndEncode()
void EncodeFrame(EncodeFrameResult *encode_frame_result);
// Encode a frame with a specific quantize index
// This funtion should be called after StartEncode() before EndEncode()
void EncodeFrameWithQuantizeIndex(EncodeFrameResult *encode_frame_result,
int quantize_index);
// Get the number of coding frames for the video. The coding frames include
// show frame and no show frame.
// This funtion should be called after ComputeFirstPassStats()
int GetCodingFrameNum();
private:
class impl;
int frame_width;
int frame_height;
int frame_rate_num;
int frame_rate_den;
int target_bitrate;
int num_frames;
FILE *file;
std::unique_ptr<impl> impl_ptr;
};
} // namespace vp9
#endif // VPX_VP9_SIMPLE_ENCODE
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