src/third_party/libvpx/vp10/encoder/extend.c - cobalt - Git at Google

 /*
  *  Copyright (c) 2010 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.
  */

 #include "vpx_dsp/vpx_dsp_common.h"
 #include "vpx_mem/vpx_mem.h"
 #include "vpx_ports/mem.h"

 #include "vp10/common/common.h"
 #include "vp10/encoder/extend.h"

 static void copy_and_extend_plane(const uint8_t *src, int src_pitch,
                                   uint8_t *dst, int dst_pitch,
                                   int w, int h,
                                   int extend_top, int extend_left,
                                   int extend_bottom, int extend_right) {
   int i, linesize;

   // copy the left and right most columns out
   const uint8_t *src_ptr1 = src;
   const uint8_t *src_ptr2 = src + w - 1;
   uint8_t *dst_ptr1 = dst - extend_left;
   uint8_t *dst_ptr2 = dst + w;

   for (i = 0; i < h; i++) {
     memset(dst_ptr1, src_ptr1[0], extend_left);
     memcpy(dst_ptr1 + extend_left, src_ptr1, w);
     memset(dst_ptr2, src_ptr2[0], extend_right);
     src_ptr1 += src_pitch;
     src_ptr2 += src_pitch;
     dst_ptr1 += dst_pitch;
     dst_ptr2 += dst_pitch;
   }

   // Now copy the top and bottom lines into each line of the respective
   // borders
   src_ptr1 = dst - extend_left;
   src_ptr2 = dst + dst_pitch * (h - 1) - extend_left;
   dst_ptr1 = dst + dst_pitch * (-extend_top) - extend_left;
   dst_ptr2 = dst + dst_pitch * (h) - extend_left;
   linesize = extend_left + extend_right + w;

   for (i = 0; i < extend_top; i++) {
     memcpy(dst_ptr1, src_ptr1, linesize);
     dst_ptr1 += dst_pitch;
   }

   for (i = 0; i < extend_bottom; i++) {
     memcpy(dst_ptr2, src_ptr2, linesize);
     dst_ptr2 += dst_pitch;
   }
 }

 #if CONFIG_VP9_HIGHBITDEPTH
 static void highbd_copy_and_extend_plane(const uint8_t *src8, int src_pitch,
                                          uint8_t *dst8, int dst_pitch,
                                          int w, int h,
                                          int extend_top, int extend_left,
                                          int extend_bottom, int extend_right) {
   int i, linesize;
   uint16_t *src = CONVERT_TO_SHORTPTR(src8);
   uint16_t *dst = CONVERT_TO_SHORTPTR(dst8);

   // copy the left and right most columns out
   const uint16_t *src_ptr1 = src;
   const uint16_t *src_ptr2 = src + w - 1;
   uint16_t *dst_ptr1 = dst - extend_left;
   uint16_t *dst_ptr2 = dst + w;

   for (i = 0; i < h; i++) {
     vpx_memset16(dst_ptr1, src_ptr1[0], extend_left);
     memcpy(dst_ptr1 + extend_left, src_ptr1, w * sizeof(src_ptr1[0]));
     vpx_memset16(dst_ptr2, src_ptr2[0], extend_right);
     src_ptr1 += src_pitch;
     src_ptr2 += src_pitch;
     dst_ptr1 += dst_pitch;
     dst_ptr2 += dst_pitch;
   }

   // Now copy the top and bottom lines into each line of the respective
   // borders
   src_ptr1 = dst - extend_left;
   src_ptr2 = dst + dst_pitch * (h - 1) - extend_left;
   dst_ptr1 = dst + dst_pitch * (-extend_top) - extend_left;
   dst_ptr2 = dst + dst_pitch * (h) - extend_left;
   linesize = extend_left + extend_right + w;

   for (i = 0; i < extend_top; i++) {
     memcpy(dst_ptr1, src_ptr1, linesize * sizeof(src_ptr1[0]));
     dst_ptr1 += dst_pitch;
   }

   for (i = 0; i < extend_bottom; i++) {
     memcpy(dst_ptr2, src_ptr2, linesize * sizeof(src_ptr2[0]));
     dst_ptr2 += dst_pitch;
   }
 }
 #endif  // CONFIG_VP9_HIGHBITDEPTH

 void vp10_copy_and_extend_frame(const YV12_BUFFER_CONFIG *src,
                                YV12_BUFFER_CONFIG *dst) {
   // Extend src frame in buffer
   // Altref filtering assumes 16 pixel extension
   const int et_y = 16;
   const int el_y = 16;
   // Motion estimation may use src block variance with the block size up
   // to 64x64, so the right and bottom need to be extended to 64 multiple
   // or up to 16, whichever is greater.
   const int er_y =
       VPXMAX(src->y_width + 16, ALIGN_POWER_OF_TWO(src->y_width, 6)) -
       src->y_crop_width;
   const int eb_y =
       VPXMAX(src->y_height + 16, ALIGN_POWER_OF_TWO(src->y_height, 6)) -
       src->y_crop_height;
   const int uv_width_subsampling = (src->uv_width != src->y_width);
   const int uv_height_subsampling = (src->uv_height != src->y_height);
   const int et_uv = et_y >> uv_height_subsampling;
   const int el_uv = el_y >> uv_width_subsampling;
   const int eb_uv = eb_y >> uv_height_subsampling;
   const int er_uv = er_y >> uv_width_subsampling;

 #if CONFIG_VP9_HIGHBITDEPTH
   if (src->flags & YV12_FLAG_HIGHBITDEPTH) {
     highbd_copy_and_extend_plane(src->y_buffer, src->y_stride,
                                  dst->y_buffer, dst->y_stride,
                                  src->y_crop_width, src->y_crop_height,
                                  et_y, el_y, eb_y, er_y);

     highbd_copy_and_extend_plane(src->u_buffer, src->uv_stride,
                                  dst->u_buffer, dst->uv_stride,
                                  src->uv_crop_width, src->uv_crop_height,
                                  et_uv, el_uv, eb_uv, er_uv);

     highbd_copy_and_extend_plane(src->v_buffer, src->uv_stride,
                                  dst->v_buffer, dst->uv_stride,
                                  src->uv_crop_width, src->uv_crop_height,
                                  et_uv, el_uv, eb_uv, er_uv);
     return;
   }
 #endif  // CONFIG_VP9_HIGHBITDEPTH

   copy_and_extend_plane(src->y_buffer, src->y_stride,
                         dst->y_buffer, dst->y_stride,
                         src->y_crop_width, src->y_crop_height,
                         et_y, el_y, eb_y, er_y);

   copy_and_extend_plane(src->u_buffer, src->uv_stride,
                         dst->u_buffer, dst->uv_stride,
                         src->uv_crop_width, src->uv_crop_height,
                         et_uv, el_uv, eb_uv, er_uv);

   copy_and_extend_plane(src->v_buffer, src->uv_stride,
                         dst->v_buffer, dst->uv_stride,
                         src->uv_crop_width, src->uv_crop_height,
                         et_uv, el_uv, eb_uv, er_uv);
 }

 void vp10_copy_and_extend_frame_with_rect(const YV12_BUFFER_CONFIG *src,
                                          YV12_BUFFER_CONFIG *dst,
                                          int srcy, int srcx,
                                          int srch, int srcw) {
   // If the side is not touching the bounder then don't extend.
   const int et_y = srcy ? 0 : dst->border;
   const int el_y = srcx ? 0 : dst->border;
   const int eb_y = srcy + srch != src->y_height ? 0 :
                       dst->border + dst->y_height - src->y_height;
   const int er_y = srcx + srcw != src->y_width ? 0 :
                       dst->border + dst->y_width - src->y_width;
   const int src_y_offset = srcy * src->y_stride + srcx;
   const int dst_y_offset = srcy * dst->y_stride + srcx;

   const int et_uv = ROUND_POWER_OF_TWO(et_y, 1);
   const int el_uv = ROUND_POWER_OF_TWO(el_y, 1);
   const int eb_uv = ROUND_POWER_OF_TWO(eb_y, 1);
   const int er_uv = ROUND_POWER_OF_TWO(er_y, 1);
   const int src_uv_offset = ((srcy * src->uv_stride) >> 1) + (srcx >> 1);
   const int dst_uv_offset = ((srcy * dst->uv_stride) >> 1) + (srcx >> 1);
   const int srch_uv = ROUND_POWER_OF_TWO(srch, 1);
   const int srcw_uv = ROUND_POWER_OF_TWO(srcw, 1);

   copy_and_extend_plane(src->y_buffer + src_y_offset, src->y_stride,
                         dst->y_buffer + dst_y_offset, dst->y_stride,
                         srcw, srch,
                         et_y, el_y, eb_y, er_y);

   copy_and_extend_plane(src->u_buffer + src_uv_offset, src->uv_stride,
                         dst->u_buffer + dst_uv_offset, dst->uv_stride,
                         srcw_uv, srch_uv,
                         et_uv, el_uv, eb_uv, er_uv);

   copy_and_extend_plane(src->v_buffer + src_uv_offset, src->uv_stride,
                         dst->v_buffer + dst_uv_offset, dst->uv_stride,
                         srcw_uv, srch_uv,
                         et_uv, el_uv, eb_uv, er_uv);
 }
	/*
	* Copyright (c) 2010 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.
	*/

	#include "vpx_dsp/vpx_dsp_common.h"
	#include "vpx_mem/vpx_mem.h"
	#include "vpx_ports/mem.h"

	#include "vp10/common/common.h"
	#include "vp10/encoder/extend.h"

	static void copy_and_extend_plane(const uint8_t *src, int src_pitch,
	uint8_t *dst, int dst_pitch,
	int w, int h,
	int extend_top, int extend_left,
	int extend_bottom, int extend_right) {
	int i, linesize;

	// copy the left and right most columns out
	const uint8_t *src_ptr1 = src;
	const uint8_t *src_ptr2 = src + w - 1;
	uint8_t *dst_ptr1 = dst - extend_left;
	uint8_t *dst_ptr2 = dst + w;

	for (i = 0; i < h; i++) {
	memset(dst_ptr1, src_ptr1[0], extend_left);
	memcpy(dst_ptr1 + extend_left, src_ptr1, w);
	memset(dst_ptr2, src_ptr2[0], extend_right);
	src_ptr1 += src_pitch;
	src_ptr2 += src_pitch;
	dst_ptr1 += dst_pitch;
	dst_ptr2 += dst_pitch;
	}

	// Now copy the top and bottom lines into each line of the respective
	// borders
	src_ptr1 = dst - extend_left;
	src_ptr2 = dst + dst_pitch * (h - 1) - extend_left;
	dst_ptr1 = dst + dst_pitch * (-extend_top) - extend_left;
	dst_ptr2 = dst + dst_pitch * (h) - extend_left;
	linesize = extend_left + extend_right + w;

	for (i = 0; i < extend_top; i++) {
	memcpy(dst_ptr1, src_ptr1, linesize);
	dst_ptr1 += dst_pitch;
	}

	for (i = 0; i < extend_bottom; i++) {
	memcpy(dst_ptr2, src_ptr2, linesize);
	dst_ptr2 += dst_pitch;
	}
	}

	#if CONFIG_VP9_HIGHBITDEPTH
	static void highbd_copy_and_extend_plane(const uint8_t *src8, int src_pitch,
	uint8_t *dst8, int dst_pitch,
	int w, int h,
	int extend_top, int extend_left,
	int extend_bottom, int extend_right) {
	int i, linesize;
	uint16_t *src = CONVERT_TO_SHORTPTR(src8);
	uint16_t *dst = CONVERT_TO_SHORTPTR(dst8);

	// copy the left and right most columns out
	const uint16_t *src_ptr1 = src;
	const uint16_t *src_ptr2 = src + w - 1;
	uint16_t *dst_ptr1 = dst - extend_left;
	uint16_t *dst_ptr2 = dst + w;

	for (i = 0; i < h; i++) {
	vpx_memset16(dst_ptr1, src_ptr1[0], extend_left);
	memcpy(dst_ptr1 + extend_left, src_ptr1, w * sizeof(src_ptr1[0]));
	vpx_memset16(dst_ptr2, src_ptr2[0], extend_right);
	src_ptr1 += src_pitch;
	src_ptr2 += src_pitch;
	dst_ptr1 += dst_pitch;
	dst_ptr2 += dst_pitch;
	}

	// Now copy the top and bottom lines into each line of the respective
	// borders
	src_ptr1 = dst - extend_left;
	src_ptr2 = dst + dst_pitch * (h - 1) - extend_left;
	dst_ptr1 = dst + dst_pitch * (-extend_top) - extend_left;
	dst_ptr2 = dst + dst_pitch * (h) - extend_left;
	linesize = extend_left + extend_right + w;

	for (i = 0; i < extend_top; i++) {
	memcpy(dst_ptr1, src_ptr1, linesize * sizeof(src_ptr1[0]));
	dst_ptr1 += dst_pitch;
	}

	for (i = 0; i < extend_bottom; i++) {
	memcpy(dst_ptr2, src_ptr2, linesize * sizeof(src_ptr2[0]));
	dst_ptr2 += dst_pitch;
	}
	}
	#endif // CONFIG_VP9_HIGHBITDEPTH

	void vp10_copy_and_extend_frame(const YV12_BUFFER_CONFIG *src,
	YV12_BUFFER_CONFIG *dst) {
	// Extend src frame in buffer
	// Altref filtering assumes 16 pixel extension
	const int et_y = 16;
	const int el_y = 16;
	// Motion estimation may use src block variance with the block size up
	// to 64x64, so the right and bottom need to be extended to 64 multiple
	// or up to 16, whichever is greater.
	const int er_y =
	VPXMAX(src->y_width + 16, ALIGN_POWER_OF_TWO(src->y_width, 6)) -
	src->y_crop_width;
	const int eb_y =
	VPXMAX(src->y_height + 16, ALIGN_POWER_OF_TWO(src->y_height, 6)) -
	src->y_crop_height;
	const int uv_width_subsampling = (src->uv_width != src->y_width);
	const int uv_height_subsampling = (src->uv_height != src->y_height);
	const int et_uv = et_y >> uv_height_subsampling;
	const int el_uv = el_y >> uv_width_subsampling;
	const int eb_uv = eb_y >> uv_height_subsampling;
	const int er_uv = er_y >> uv_width_subsampling;

	#if CONFIG_VP9_HIGHBITDEPTH
	if (src->flags & YV12_FLAG_HIGHBITDEPTH) {
	highbd_copy_and_extend_plane(src->y_buffer, src->y_stride,
	dst->y_buffer, dst->y_stride,
	src->y_crop_width, src->y_crop_height,
	et_y, el_y, eb_y, er_y);

	highbd_copy_and_extend_plane(src->u_buffer, src->uv_stride,
	dst->u_buffer, dst->uv_stride,
	src->uv_crop_width, src->uv_crop_height,
	et_uv, el_uv, eb_uv, er_uv);

	highbd_copy_and_extend_plane(src->v_buffer, src->uv_stride,
	dst->v_buffer, dst->uv_stride,
	src->uv_crop_width, src->uv_crop_height,
	et_uv, el_uv, eb_uv, er_uv);
	return;
	}
	#endif // CONFIG_VP9_HIGHBITDEPTH

	copy_and_extend_plane(src->y_buffer, src->y_stride,
	dst->y_buffer, dst->y_stride,
	src->y_crop_width, src->y_crop_height,
	et_y, el_y, eb_y, er_y);

	copy_and_extend_plane(src->u_buffer, src->uv_stride,
	dst->u_buffer, dst->uv_stride,
	src->uv_crop_width, src->uv_crop_height,
	et_uv, el_uv, eb_uv, er_uv);

	copy_and_extend_plane(src->v_buffer, src->uv_stride,
	dst->v_buffer, dst->uv_stride,
	src->uv_crop_width, src->uv_crop_height,
	et_uv, el_uv, eb_uv, er_uv);
	}

	void vp10_copy_and_extend_frame_with_rect(const YV12_BUFFER_CONFIG *src,
	YV12_BUFFER_CONFIG *dst,
	int srcy, int srcx,
	int srch, int srcw) {
	// If the side is not touching the bounder then don't extend.
	const int et_y = srcy ? 0 : dst->border;
	const int el_y = srcx ? 0 : dst->border;
	const int eb_y = srcy + srch != src->y_height ? 0 :
	dst->border + dst->y_height - src->y_height;
	const int er_y = srcx + srcw != src->y_width ? 0 :
	dst->border + dst->y_width - src->y_width;
	const int src_y_offset = srcy * src->y_stride + srcx;
	const int dst_y_offset = srcy * dst->y_stride + srcx;

	const int et_uv = ROUND_POWER_OF_TWO(et_y, 1);
	const int el_uv = ROUND_POWER_OF_TWO(el_y, 1);
	const int eb_uv = ROUND_POWER_OF_TWO(eb_y, 1);
	const int er_uv = ROUND_POWER_OF_TWO(er_y, 1);
	const int src_uv_offset = ((srcy * src->uv_stride) >> 1) + (srcx >> 1);
	const int dst_uv_offset = ((srcy * dst->uv_stride) >> 1) + (srcx >> 1);
	const int srch_uv = ROUND_POWER_OF_TWO(srch, 1);
	const int srcw_uv = ROUND_POWER_OF_TWO(srcw, 1);

	copy_and_extend_plane(src->y_buffer + src_y_offset, src->y_stride,
	dst->y_buffer + dst_y_offset, dst->y_stride,
	srcw, srch,
	et_y, el_y, eb_y, er_y);

	copy_and_extend_plane(src->u_buffer + src_uv_offset, src->uv_stride,
	dst->u_buffer + dst_uv_offset, dst->uv_stride,
	srcw_uv, srch_uv,
	et_uv, el_uv, eb_uv, er_uv);

	copy_and_extend_plane(src->v_buffer + src_uv_offset, src->uv_stride,
	dst->v_buffer + dst_uv_offset, dst->uv_stride,
	srcw_uv, srch_uv,
	et_uv, el_uv, eb_uv, er_uv);
	}