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Diffstat (limited to 'libvpx/vp9/common/vp9_subpelvar.h')
| -rw-r--r-- | libvpx/vp9/common/vp9_subpelvar.h | 145 |
1 files changed, 0 insertions, 145 deletions
diff --git a/libvpx/vp9/common/vp9_subpelvar.h b/libvpx/vp9/common/vp9_subpelvar.h deleted file mode 100644 index fe75481..0000000 --- a/libvpx/vp9/common/vp9_subpelvar.h +++ /dev/null @@ -1,145 +0,0 @@ -/* - * 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. - */ - -#ifndef VP9_COMMON_VP9_SUBPELVAR_H_ -#define VP9_COMMON_VP9_SUBPELVAR_H_ - -#include "vp9/common/vp9_common.h" -#include "vp9/common/vp9_convolve.h" - -static void variance(const uint8_t *src_ptr, - int source_stride, - const uint8_t *ref_ptr, - int recon_stride, - int w, - int h, - unsigned int *sse, - int *sum) { - int i, j; - int diff; - - *sum = 0; - *sse = 0; - - for (i = 0; i < h; i++) { - for (j = 0; j < w; j++) { - diff = src_ptr[j] - ref_ptr[j]; - *sum += diff; - *sse += diff * diff; - } - - src_ptr += source_stride; - ref_ptr += recon_stride; - } -} - -/**************************************************************************** - * - * ROUTINE : filter_block2d_bil_first_pass - * - * INPUTS : uint8_t *src_ptr : Pointer to source block. - * uint32_t src_pixels_per_line : Stride of input block. - * uint32_t pixel_step : Offset between filter input samples (see notes). - * uint32_t output_height : Input block height. - * uint32_t output_width : Input block width. - * int32_t *vp9_filter : Array of 2 bi-linear filter taps. - * - * OUTPUTS : int32_t *output_ptr : Pointer to filtered block. - * - * RETURNS : void - * - * FUNCTION : Applies a 1-D 2-tap bi-linear filter to the source block in - * either horizontal or vertical direction to produce the - * filtered output block. Used to implement first-pass - * of 2-D separable filter. - * - * SPECIAL NOTES : Produces int32_t output to retain precision for next pass. - * Two filter taps should sum to VP9_FILTER_WEIGHT. - * pixel_step defines whether the filter is applied - * horizontally (pixel_step=1) or vertically (pixel_step=stride). - * It defines the offset required to move from one input - * to the next. - * - ****************************************************************************/ -static void var_filter_block2d_bil_first_pass(const uint8_t *src_ptr, - uint16_t *output_ptr, - unsigned int src_pixels_per_line, - int pixel_step, - unsigned int output_height, - unsigned int output_width, - const int16_t *vp9_filter) { - unsigned int i, j; - - for (i = 0; i < output_height; i++) { - for (j = 0; j < output_width; j++) { - output_ptr[j] = ROUND_POWER_OF_TWO((int)src_ptr[0] * vp9_filter[0] + - (int)src_ptr[pixel_step] * vp9_filter[1], - FILTER_BITS); - - src_ptr++; - } - - // Next row... - src_ptr += src_pixels_per_line - output_width; - output_ptr += output_width; - } -} - -/**************************************************************************** - * - * ROUTINE : filter_block2d_bil_second_pass - * - * INPUTS : int32_t *src_ptr : Pointer to source block. - * uint32_t src_pixels_per_line : Stride of input block. - * uint32_t pixel_step : Offset between filter input samples (see notes). - * uint32_t output_height : Input block height. - * uint32_t output_width : Input block width. - * int32_t *vp9_filter : Array of 2 bi-linear filter taps. - * - * OUTPUTS : uint16_t *output_ptr : Pointer to filtered block. - * - * RETURNS : void - * - * FUNCTION : Applies a 1-D 2-tap bi-linear filter to the source block in - * either horizontal or vertical direction to produce the - * filtered output block. Used to implement second-pass - * of 2-D separable filter. - * - * SPECIAL NOTES : Requires 32-bit input as produced by filter_block2d_bil_first_pass. - * Two filter taps should sum to VP9_FILTER_WEIGHT. - * pixel_step defines whether the filter is applied - * horizontally (pixel_step=1) or vertically (pixel_step=stride). - * It defines the offset required to move from one input - * to the next. - * - ****************************************************************************/ -static void var_filter_block2d_bil_second_pass(const uint16_t *src_ptr, - uint8_t *output_ptr, - unsigned int src_pixels_per_line, - unsigned int pixel_step, - unsigned int output_height, - unsigned int output_width, - const int16_t *vp9_filter) { - unsigned int i, j; - - for (i = 0; i < output_height; i++) { - for (j = 0; j < output_width; j++) { - output_ptr[j] = ROUND_POWER_OF_TWO((int)src_ptr[0] * vp9_filter[0] + - (int)src_ptr[pixel_step] * vp9_filter[1], - FILTER_BITS); - src_ptr++; - } - - src_ptr += src_pixels_per_line - output_width; - output_ptr += output_width; - } -} - -#endif // VP9_COMMON_VP9_SUBPELVAR_H_ |