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media/libvpx/vp9/encoder/vp9_variance.h@ac0c01689b40 (annotated)

media/libvpx/vp9/encoder/vp9_variance.h

Thu, 15 Jan 2015 15:59:08 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Thu, 15 Jan 2015 15:59:08 +0100

branch

TOR_BUG_9701

changeset 10

ac0c01689b40

permissions

-rw-r--r--

Implement a real Private Browsing Mode condition by changing the API/ABI;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

michael@0	1	/*
michael@0	2	* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
michael@0	3	*
michael@0	4	* Use of this source code is governed by a BSD-style license
michael@0	5	* that can be found in the LICENSE file in the root of the source
michael@0	6	* tree. An additional intellectual property rights grant can be found
michael@0	7	* in the file PATENTS. All contributing project authors may
michael@0	8	* be found in the AUTHORS file in the root of the source tree.
michael@0	9	*/
michael@0	10
michael@0	11	#ifndef VP9_ENCODER_VP9_VARIANCE_H_
michael@0	12	#define VP9_ENCODER_VP9_VARIANCE_H_
michael@0	13
michael@0	14	#include "vpx/vpx_integer.h"
michael@0	15	// #include "./vpx_config.h"
michael@0	16
michael@0	17	void variance(const uint8_t *src_ptr,
michael@0	18	int source_stride,
michael@0	19	const uint8_t *ref_ptr,
michael@0	20	int recon_stride,
michael@0	21	int w,
michael@0	22	int h,
michael@0	23	unsigned int *sse,
michael@0	24	int *sum);
michael@0	25
michael@0	26	typedef unsigned int(*vp9_sad_fn_t)(const uint8_t *src_ptr,
michael@0	27	int source_stride,
michael@0	28	const uint8_t *ref_ptr,
michael@0	29	int ref_stride,
michael@0	30	unsigned int max_sad);
michael@0	31
michael@0	32	typedef unsigned int(*vp9_sad_avg_fn_t)(const uint8_t *src_ptr,
michael@0	33	int source_stride,
michael@0	34	const uint8_t *ref_ptr,
michael@0	35	int ref_stride,
michael@0	36	const uint8_t *second_pred,
michael@0	37	unsigned int max_sad);
michael@0	38
michael@0	39	typedef void (*vp9_sad_multi_fn_t)(const uint8_t *src_ptr,
michael@0	40	int source_stride,
michael@0	41	const uint8_t *ref_ptr,
michael@0	42	int ref_stride,
michael@0	43	unsigned int *sad_array);
michael@0	44
michael@0	45	typedef void (*vp9_sad_multi1_fn_t)(const uint8_t *src_ptr,
michael@0	46	int source_stride,
michael@0	47	const uint8_t *ref_ptr,
michael@0	48	int ref_stride,
michael@0	49	unsigned int *sad_array);
michael@0	50
michael@0	51	typedef void (*vp9_sad_multi_d_fn_t)(const uint8_t *src_ptr,
michael@0	52	int source_stride,
michael@0	53	const uint8_t* const ref_ptr[],
michael@0	54	int ref_stride, unsigned int *sad_array);
michael@0	55
michael@0	56	typedef unsigned int (*vp9_variance_fn_t)(const uint8_t *src_ptr,
michael@0	57	int source_stride,
michael@0	58	const uint8_t *ref_ptr,
michael@0	59	int ref_stride,
michael@0	60	unsigned int *sse);
michael@0	61
michael@0	62	typedef unsigned int (*vp9_subpixvariance_fn_t)(const uint8_t *src_ptr,
michael@0	63	int source_stride,
michael@0	64	int xoffset,
michael@0	65	int yoffset,
michael@0	66	const uint8_t *ref_ptr,
michael@0	67	int Refstride,
michael@0	68	unsigned int *sse);
michael@0	69
michael@0	70	typedef unsigned int (*vp9_subp_avg_variance_fn_t)(const uint8_t *src_ptr,
michael@0	71	int source_stride,
michael@0	72	int xoffset,
michael@0	73	int yoffset,
michael@0	74	const uint8_t *ref_ptr,
michael@0	75	int Refstride,
michael@0	76	unsigned int *sse,
michael@0	77	const uint8_t *second_pred);
michael@0	78
michael@0	79	typedef unsigned int (*vp9_getmbss_fn_t)(const short *);
michael@0	80
michael@0	81	typedef unsigned int (*vp9_get16x16prederror_fn_t)(const uint8_t *src_ptr,
michael@0	82	int source_stride,
michael@0	83	const uint8_t *ref_ptr,
michael@0	84	int ref_stride);
michael@0	85
michael@0	86	typedef struct vp9_variance_vtable {
michael@0	87	vp9_sad_fn_t sdf;
michael@0	88	vp9_sad_avg_fn_t sdaf;
michael@0	89	vp9_variance_fn_t vf;
michael@0	90	vp9_subpixvariance_fn_t svf;
michael@0	91	vp9_subp_avg_variance_fn_t svaf;
michael@0	92	vp9_variance_fn_t svf_halfpix_h;
michael@0	93	vp9_variance_fn_t svf_halfpix_v;
michael@0	94	vp9_variance_fn_t svf_halfpix_hv;
michael@0	95	vp9_sad_multi_fn_t sdx3f;
michael@0	96	vp9_sad_multi1_fn_t sdx8f;
michael@0	97	vp9_sad_multi_d_fn_t sdx4df;
michael@0	98	} vp9_variance_fn_ptr_t;
michael@0	99
michael@0	100	static void comp_avg_pred(uint8_t *comp_pred, const uint8_t *pred, int width,
michael@0	101	int height, const uint8_t *ref, int ref_stride) {
michael@0	102	int i, j;
michael@0	103
michael@0	104	for (i = 0; i < height; i++) {
michael@0	105	for (j = 0; j < width; j++) {
michael@0	106	int tmp;
michael@0	107	tmp = pred[j] + ref[j];
michael@0	108	comp_pred[j] = (tmp + 1) >> 1;
michael@0	109	}
michael@0	110	comp_pred += width;
michael@0	111	pred += width;
michael@0	112	ref += ref_stride;
michael@0	113	}
michael@0	114	}
michael@0	115	#endif // VP9_ENCODER_VP9_VARIANCE_H_