6e4dff92a4
A tile copy mode is introduced, while allows a tile to use another tile's coded data directly at bitstream level. This largely reduces the bit rate in this use case. Our tests showed that 10% - 20% bit rate reduction was achieved. Change-Id: Icf5ae00320e27193b15ce95297720f8b6f5e7fd9
55 lines
1.7 KiB
C
55 lines
1.7 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_BITSTREAM_H_
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#define VP9_ENCODER_VP9_BITSTREAM_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "vpx_ports/mem_ops.h"
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#include "vp9/encoder/vp9_encoder.h"
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void vp9_entropy_mode_init();
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#if CONFIG_ROW_TILE
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// In the tile header, 1 bit is used for TCM, and the rest bits are used for
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// TDS. But, no TCM bit in tile column header.
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// type 0: tile header; type 1: tile column header.
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#define ONE_BYTE_LIMIT(type) ((type) ? 255 : 127)
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#define TWO_BYTE_LIMIT(type) ((type) ? 65535 : 32767)
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#define THREE_BYTE_LIMIT(type) ((type) ? 16777215 : 8388607)
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#define ONE_BYTE_THRESH(type) \
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(ONE_BYTE_LIMIT(type) - (ONE_BYTE_LIMIT(type) >> 2))
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#define TWO_BYTE_THRESH(type) \
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(TWO_BYTE_LIMIT(type) - (TWO_BYTE_LIMIT(type) >> 2))
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#define THREE_BYTE_THRESH(type) \
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(THREE_BYTE_LIMIT(type) - (THREE_BYTE_LIMIT(type) >> 2))
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typedef void (*MemPut)(void *, MEM_VALUE_T);
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int vp9_pack_bitstream(VP9_COMP *cpi, uint8_t *dest, size_t *size,
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int final_packing);
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#else
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void vp9_pack_bitstream(VP9_COMP *cpi, uint8_t *dest, size_t *size);
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#endif
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static INLINE int vp9_preserve_existing_gf(VP9_COMP *cpi) {
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return !cpi->multi_arf_allowed && cpi->refresh_golden_frame &&
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cpi->rc.is_src_frame_alt_ref;
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}
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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_BITSTREAM_H_
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