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Jingning Han authored
This commit enables a fast path computational flow for forward transformation. It checks the sse and variance of prediction residuals and decides if the quantized coefficients are all zero, dc only, or more. It then selects the corresponding coding path in the forward transformation and quantization stage. It is currently enabled in rtc coding mode. Will do it for rd coding mode next. In speed -6, the runtime for pedestrian_area 1080p at 1000 kbps goes down from 14234 ms to 13704 ms, i.e., about 4% speed-up. Overall coding performance for rtc set is changed by -0.18%. Change-Id: I0452da1786d59bc8bcbe0a35fdae9f623d1d44e1
ccba289f
/*
* Copyright (c) 2013 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 WEBMENC_H_
#define WEBMENC_H_
#include <stdio.h>
#include <stdlib.h>
#if defined(_MSC_VER)
/* MSVS doesn't define off_t */
typedef __int64 off_t;
#else
#include <stdint.h>
#endif
#include "tools_common.h"
#include "vpx/vpx_encoder.h"
#ifdef __cplusplus
extern "C" {
#endif
typedef off_t EbmlLoc;
struct cue_entry {
unsigned int time;
uint64_t loc;
};
struct EbmlGlobal {
int debug;
FILE *stream;
int64_t last_pts_ms;
vpx_rational_t framerate;
/* These pointers are to the start of an element */
off_t position_reference;
off_t seek_info_pos;
off_t segment_info_pos;
off_t track_pos;
off_t cue_pos;
off_t cluster_pos;
/* This pointer is to a specific element to be serialized */
off_t track_id_pos;
/* These pointers are to the size field of the element */
EbmlLoc startSegment;
EbmlLoc startCluster;
uint32_t cluster_timecode;
int cluster_open;
struct cue_entry *cue_list;
unsigned int cues;
};
/* Stereo 3D packed frame format */
typedef enum stereo_format {
STEREO_FORMAT_MONO = 0,
STEREO_FORMAT_LEFT_RIGHT = 1,
STEREO_FORMAT_BOTTOM_TOP = 2,
7172737475767778798081828384858687888990919293949596
STEREO_FORMAT_TOP_BOTTOM = 3,
STEREO_FORMAT_RIGHT_LEFT = 11
} stereo_format_t;
void write_webm_seek_element(struct EbmlGlobal *ebml,
unsigned int id,
off_t pos);
void write_webm_file_header(struct EbmlGlobal *glob,
const vpx_codec_enc_cfg_t *cfg,
const struct vpx_rational *fps,
stereo_format_t stereo_fmt,
unsigned int fourcc);
void write_webm_block(struct EbmlGlobal *glob,
const vpx_codec_enc_cfg_t *cfg,
const vpx_codec_cx_pkt_t *pkt);
void write_webm_file_footer(struct EbmlGlobal *glob, int hash);
#ifdef __cplusplus
} // extern "C"
#endif
#endif // WEBMENC_H_