myvtm/Other/unix/libvideoframework/video_coding/video_encoder.h

#ifndef VIDEO_CODECS_VIDEO_ENCODER_H_
#define VIDEO_CODECS_VIDEO_ENCODER_H_


#include "precompile.h"

#ifdef __cplusplus

#ifdef _STDINT_H
#undef _STDINT_H
#endif
#include "stdint.h"

#ifndef INT64_C
#define INT64_C(c) (c ## LL)
#define UINT64_C(c) (c ## ULL)
#endif

extern "C" {
#endif

#include "../video_common/ffmpeg_api_adapter.h"
#include "x264.h"


#ifdef __cplusplus
  }
#endif /* end of __cplusplus */


#include "../videoutil.h"
#include "video_encoder_defines.h"

#define FAILED_VALUE -1
#define SUCCESS_VALUE 0

namespace video_coding {

	typedef struct _QpThresholds {
		int low;
		int high;
	}QpThresholds;


	typedef struct _EncoderInfo {

		// If this field is true, the encoder uses hardware support and different
		// thresholds will be used in CPU adaptation.
		bool is_hardware_accelerated;

		QpThresholds thresholds;
	}EncoderInfo;


	typedef struct _VideoEncoder VideoEncoder;

	VideoEncoder *video_encoder_new();

	void  video_encoder_destroy(VideoEncoder *obj);

	// Initialize the encoder with the information from the codecSettings
	//
	// Input:
	//          - codec_settings    : Codec settings
	//          - max_payload_size  : The maximum size each payload is allowed
	//                                to have. Usually MTU - overhead.
	//
	// Return value                  : Set bit rate if OK
	//                                 <0 - Errors
	int32_t video_encoder_init_encode(VideoEncoder *obj, const VideoEncoderConfig* codec_settings,
		size_t max_payload_size);

	// Free encoder memory.
	// Return value                : 0 if OK, < 0 otherwise.
	int32_t video_encoder_release(VideoEncoder *obj);


	// Encode an I420 image (as a part of a video stream). The encoded image
	// will be returned to the user through the encode complete callback.
	//
	// Input:
	//          - frame             : Image to be encoded
	//          - frame_types       : Frame type to be generated by the encoder.
	//
	// Return value                 : 0 if OK
	//                                <0 - Errors
	EncodedImage *video_encoder_encode(VideoEncoder *obj, unsigned pt, const video_frame *frame, int key_frame);

	/*bitrate:目标带宽，单位:kbps  */
	int32_t video_encoder_set_rates(VideoEncoder *obj, uint32_t bitrate, uint32_t framerate);

	// Returns meta-data about the encoder, such as implementation name.
	// The output of this method may change during runtime. For instance if a
	// hardware encoder fails, it may fall back to doing software encoding using
	// an implementation with different characteristics.
	int32_t video_encoder_get_encoder_info(VideoEncoder *obj, EncoderInfo *info);

}

#endif  // API_VIDEO_CODECS_VIDEO_ENCODER_H_