71061e9332
(Yunqing Wang) This patch implements the row-based multi-threading within tiles in the encoding pass, and substantially speeds up the multi-threaded encoder in VP9. Speed tests at speed 1 on STDHD(using 4 tiles) set show that the average speedups of the encoding pass(second pass in the 2-pass encoding) is 7% while using 2 threads, 16% while using 4 threads, 85% while using 8 threads, and 116% while using 16 threads. Change-Id: I12e41dbc171951958af9e6d098efd6e2c82827de
52 lines
1.5 KiB
C
52 lines
1.5 KiB
C
/*
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* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef VP9_ENCODER_VP9_ENCODEFRAME_H_
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#define VP9_ENCODER_VP9_ENCODEFRAME_H_
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#include "vpx/vpx_integer.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct macroblock;
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struct yv12_buffer_config;
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struct VP9_COMP;
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struct ThreadData;
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// Constants used in SOURCE_VAR_BASED_PARTITION
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#define VAR_HIST_MAX_BG_VAR 1000
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#define VAR_HIST_FACTOR 10
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#define VAR_HIST_BINS (VAR_HIST_MAX_BG_VAR / VAR_HIST_FACTOR + 1)
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#define VAR_HIST_LARGE_CUT_OFF 75
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#define VAR_HIST_SMALL_CUT_OFF 45
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void vp9_setup_src_planes(struct macroblock *x,
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const struct yv12_buffer_config *src, int mi_row,
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int mi_col);
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void vp9_encode_frame(struct VP9_COMP *cpi);
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void vp9_init_tile_data(struct VP9_COMP *cpi);
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void vp9_encode_tile(struct VP9_COMP *cpi, struct ThreadData *td, int tile_row,
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int tile_col);
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void vp9_encode_sb_row(struct VP9_COMP *cpi, struct ThreadData *td,
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int tile_row, int tile_col, int mi_row);
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void vp9_set_variance_partition_thresholds(struct VP9_COMP *cpi, int q);
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif // VP9_ENCODER_VP9_ENCODEFRAME_H_
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