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Diffstat (limited to 'media/libvpx/vp8/encoder/denoising.h')
| -rw-r--r-- | media/libvpx/vp8/encoder/denoising.h | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/media/libvpx/vp8/encoder/denoising.h b/media/libvpx/vp8/encoder/denoising.h new file mode 100644 index 0000000000..9a379a6a16 --- /dev/null +++ b/media/libvpx/vp8/encoder/denoising.h @@ -0,0 +1,117 @@ +/* + * Copyright (c) 2012 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 VP8_ENCODER_DENOISING_H_ +#define VP8_ENCODER_DENOISING_H_ + +#include "block.h" +#include "vp8/common/loopfilter.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#define SUM_DIFF_THRESHOLD (16 * 16 * 2) +#define SUM_DIFF_THRESHOLD_HIGH (600) // ~(16 * 16 * 1.5) +#define MOTION_MAGNITUDE_THRESHOLD (8*3) + +#define SUM_DIFF_THRESHOLD_UV (96) // (8 * 8 * 1.5) +#define SUM_DIFF_THRESHOLD_HIGH_UV (8 * 8 * 2) +#define SUM_DIFF_FROM_AVG_THRESH_UV (8 * 8 * 8) +#define MOTION_MAGNITUDE_THRESHOLD_UV (8*3) + +#define MAX_GF_ARF_DENOISE_RANGE (8) + +enum vp8_denoiser_decision +{ + COPY_BLOCK, + FILTER_BLOCK +}; + +enum vp8_denoiser_filter_state { + kNoFilter, + kFilterZeroMV, + kFilterNonZeroMV +}; + +enum vp8_denoiser_mode { + kDenoiserOff, + kDenoiserOnYOnly, + kDenoiserOnYUV, + kDenoiserOnYUVAggressive, + kDenoiserOnAdaptive +}; + +typedef struct { + // Scale factor on sse threshold above which no denoising is done. + unsigned int scale_sse_thresh; + // Scale factor on motion magnitude threshold above which no + // denoising is done. + unsigned int scale_motion_thresh; + // Scale factor on motion magnitude below which we increase the strength of + // the temporal filter (in function vp8_denoiser_filter). + unsigned int scale_increase_filter; + // Scale factor to bias to ZEROMV for denoising. + unsigned int denoise_mv_bias; + // Scale factor to bias to ZEROMV for coding mode selection. + unsigned int pickmode_mv_bias; + // Quantizer threshold below which we use the segmentation map to switch off + // loop filter for blocks that have been coded as ZEROMV-LAST a certain number + // (consec_zerolast) of consecutive frames. Note that the delta-QP is set to + // 0 when segmentation map is used for shutting off loop filter. + unsigned int qp_thresh; + // Threshold for number of consecutive frames for blocks coded as ZEROMV-LAST. + unsigned int consec_zerolast; + // Threshold for amount of spatial blur on Y channel. 0 means no spatial blur. + unsigned int spatial_blur; +} denoise_params; + +typedef struct vp8_denoiser +{ + YV12_BUFFER_CONFIG yv12_running_avg[MAX_REF_FRAMES]; + YV12_BUFFER_CONFIG yv12_mc_running_avg; + // TODO(marpan): Should remove yv12_last_source and use vp8_lookahead_peak. + YV12_BUFFER_CONFIG yv12_last_source; + unsigned char* denoise_state; + int num_mb_cols; + int denoiser_mode; + int threshold_aggressive_mode; + int nmse_source_diff; + int nmse_source_diff_count; + int qp_avg; + int qp_threshold_up; + int qp_threshold_down; + int bitrate_threshold; + denoise_params denoise_pars; +} VP8_DENOISER; + +int vp8_denoiser_allocate(VP8_DENOISER *denoiser, int width, int height, + int num_mb_rows, int num_mb_cols, int mode); + +void vp8_denoiser_free(VP8_DENOISER *denoiser); + +void vp8_denoiser_set_parameters(VP8_DENOISER *denoiser, int mode); + +void vp8_denoiser_denoise_mb(VP8_DENOISER *denoiser, + MACROBLOCK *x, + unsigned int best_sse, + unsigned int zero_mv_sse, + int recon_yoffset, + int recon_uvoffset, + loop_filter_info_n *lfi_n, + int mb_row, + int mb_col, + int block_index); + +#ifdef __cplusplus +} // extern "C" +#endif + +#endif // VP8_ENCODER_DENOISING_H_ |