зеркало из https://github.com/mozilla/gecko-dev.git
318 строки
10 KiB
C
318 строки
10 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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/*!\defgroup vp8_encoder WebM VP8 Encoder
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* \ingroup vp8
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*
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* @{
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*/
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#include "vp8.h"
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/*!\file
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* \brief Provides definitions for using the VP8 encoder algorithm within the
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* vpx Codec Interface.
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*/
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#ifndef VP8CX_H
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#define VP8CX_H
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#include "vpx_codec_impl_top.h"
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/*!\name Algorithm interface for VP8
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*
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* This interface provides the capability to encode raw VP8 streams, as would
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* be found in AVI files.
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* @{
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*/
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extern vpx_codec_iface_t vpx_codec_vp8_cx_algo;
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extern vpx_codec_iface_t* vpx_codec_vp8_cx(void);
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/*!@} - end algorithm interface member group*/
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/*
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* Algorithm Flags
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*/
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/*!\brief Don't reference the last frame
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*
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* When this flag is set, the encoder will not use the last frame as a
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* predictor. When not set, the encoder will choose whether to use the
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* last frame or not automatically.
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*/
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#define VP8_EFLAG_NO_REF_LAST (1<<16)
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/*!\brief Don't reference the golden frame
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*
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* When this flag is set, the encoder will not use the golden frame as a
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* predictor. When not set, the encoder will choose whether to use the
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* golden frame or not automatically.
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*/
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#define VP8_EFLAG_NO_REF_GF (1<<17)
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/*!\brief Don't reference the alternate reference frame
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*
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* When this flag is set, the encoder will not use the alt ref frame as a
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* predictor. When not set, the encoder will choose whether to use the
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* alt ref frame or not automatically.
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*/
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#define VP8_EFLAG_NO_REF_ARF (1<<21)
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/*!\brief Don't update the last frame
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*
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* When this flag is set, the encoder will not update the last frame with
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* the contents of the current frame.
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*/
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#define VP8_EFLAG_NO_UPD_LAST (1<<18)
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/*!\brief Don't update the golden frame
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*
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* When this flag is set, the encoder will not update the golden frame with
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* the contents of the current frame.
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*/
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#define VP8_EFLAG_NO_UPD_GF (1<<22)
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/*!\brief Don't update the alternate reference frame
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*
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* When this flag is set, the encoder will not update the alt ref frame with
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* the contents of the current frame.
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*/
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#define VP8_EFLAG_NO_UPD_ARF (1<<23)
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/*!\brief Force golden frame update
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*
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* When this flag is set, the encoder copy the contents of the current frame
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* to the golden frame buffer.
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*/
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#define VP8_EFLAG_FORCE_GF (1<<19)
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/*!\brief Force alternate reference frame update
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*
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* When this flag is set, the encoder copy the contents of the current frame
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* to the alternate reference frame buffer.
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*/
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#define VP8_EFLAG_FORCE_ARF (1<<24)
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/*!\brief Disable entropy update
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*
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* When this flag is set, the encoder will not update its internal entropy
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* model based on the entropy of this frame.
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*/
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#define VP8_EFLAG_NO_UPD_ENTROPY (1<<20)
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/*!\brief VP8 encoder control functions
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*
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* This set of macros define the control functions available for the VP8
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* encoder interface.
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*
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* \sa #vpx_codec_control
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*/
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enum vp8e_enc_control_id
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{
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VP8E_UPD_ENTROPY = 5, /**< control function to set mode of entropy update in encoder */
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VP8E_UPD_REFERENCE, /**< control function to set reference update mode in encoder */
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VP8E_USE_REFERENCE, /**< control function to set which reference frame encoder can use */
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VP8E_SET_ROI_MAP, /**< control function to pass an ROI map to encoder */
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VP8E_SET_ACTIVEMAP, /**< control function to pass an Active map to encoder */
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VP8E_SET_SCALEMODE = 11, /**< control function to set encoder scaling mode */
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/*!\brief control function to set vp8 encoder cpuused
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*
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* Changes in this value influences, among others, the encoder's selection
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* of motion estimation methods. Values greater than 0 will increase encoder
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* speed at the expense of quality.
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* The full set of adjustments can be found in
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* onyx_if.c:vp8_set_speed_features().
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* \todo List highlights of the changes at various levels.
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*
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* \note Valid range: -16..16
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*/
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VP8E_SET_CPUUSED = 13,
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VP8E_SET_ENABLEAUTOALTREF, /**< control function to enable vp8 to automatic set and use altref frame */
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VP8E_SET_NOISE_SENSITIVITY, /**< control function to set noise sensitivity */
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VP8E_SET_SHARPNESS, /**< control function to set sharpness */
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VP8E_SET_STATIC_THRESHOLD, /**< control function to set the threshold for macroblocks treated static */
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VP8E_SET_TOKEN_PARTITIONS, /**< control function to set the number of token partitions */
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VP8E_GET_LAST_QUANTIZER, /**< return the quantizer chosen by the
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encoder for the last frame using the internal
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scale */
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VP8E_GET_LAST_QUANTIZER_64, /**< return the quantizer chosen by the
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encoder for the last frame, using the 0..63
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scale as used by the rc_*_quantizer config
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parameters */
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VP8E_SET_ARNR_MAXFRAMES, /**< control function to set the max number of frames blurred creating arf*/
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VP8E_SET_ARNR_STRENGTH , /**< control function to set the filter strength for the arf */
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VP8E_SET_ARNR_TYPE , /**< control function to set the type of filter to use for the arf*/
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VP8E_SET_TUNING, /**< control function to set visual tuning */
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/*!\brief control function to set constrained quality level
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*
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* \attention For this value to be used vpx_codec_enc_cfg_t::g_usage must be
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* set to #VPX_CQ.
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* \note Valid range: 0..63
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*/
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VP8E_SET_CQ_LEVEL,
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/*!\brief Max data rate for Intra frames
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*
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* This value controls additional clamping on the maximum size of a
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* keyframe. It is expressed as a percentage of the average
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* per-frame bitrate, with the special (and default) value 0 meaning
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* unlimited, or no additional clamping beyond the codec's built-in
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* algorithm.
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*
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* For example, to allocate no more than 4.5 frames worth of bitrate
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* to a keyframe, set this to 450.
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*
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*/
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VP8E_SET_MAX_INTRA_BITRATE_PCT
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};
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/*!\brief vpx 1-D scaling mode
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*
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* This set of constants define 1-D vpx scaling modes
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*/
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typedef enum vpx_scaling_mode_1d
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{
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VP8E_NORMAL = 0,
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VP8E_FOURFIVE = 1,
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VP8E_THREEFIVE = 2,
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VP8E_ONETWO = 3
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} VPX_SCALING_MODE;
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/*!\brief vpx region of interest map
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*
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* These defines the data structures for the region of interest map
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*
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*/
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typedef struct vpx_roi_map
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{
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unsigned char *roi_map; /**< specify an id between 0 and 3 for each 16x16 region within a frame */
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unsigned int rows; /**< number of rows */
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unsigned int cols; /**< number of cols */
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int delta_q[4]; /**< quantizer delta [-64, 64] off baseline for regions with id between 0 and 3*/
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int delta_lf[4]; /**< loop filter strength delta [-32, 32] for regions with id between 0 and 3 */
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unsigned int static_threshold[4];/**< threshold for region to be treated as static */
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} vpx_roi_map_t;
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/*!\brief vpx active region map
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*
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* These defines the data structures for active region map
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*
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*/
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typedef struct vpx_active_map
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{
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unsigned char *active_map; /**< specify an on (1) or off (0) each 16x16 region within a frame */
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unsigned int rows; /**< number of rows */
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unsigned int cols; /**< number of cols */
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} vpx_active_map_t;
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/*!\brief vpx image scaling mode
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*
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* This defines the data structure for image scaling mode
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*
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*/
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typedef struct vpx_scaling_mode
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{
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VPX_SCALING_MODE h_scaling_mode; /**< horizontal scaling mode */
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VPX_SCALING_MODE v_scaling_mode; /**< vertical scaling mode */
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} vpx_scaling_mode_t;
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/*!\brief VP8 encoding mode
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*
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* This defines VP8 encoding mode
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*
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*/
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typedef enum
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{
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VP8_BEST_QUALITY_ENCODING,
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VP8_GOOD_QUALITY_ENCODING,
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VP8_REAL_TIME_ENCODING
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} vp8e_encoding_mode;
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/*!\brief VP8 token partition mode
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*
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* This defines VP8 partitioning mode for compressed data, i.e., the number of
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* sub-streams in the bitstream. Used for parallelized decoding.
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*
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*/
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typedef enum
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{
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VP8_ONE_TOKENPARTITION = 0,
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VP8_TWO_TOKENPARTITION = 1,
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VP8_FOUR_TOKENPARTITION = 2,
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VP8_EIGHT_TOKENPARTITION = 3
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} vp8e_token_partitions;
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/*!\brief VP8 model tuning parameters
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*
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* Changes the encoder to tune for certain types of input material.
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*
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*/
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typedef enum
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{
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VP8_TUNE_PSNR,
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VP8_TUNE_SSIM
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} vp8e_tuning;
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/*!\brief VP8 encoder control function parameter type
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*
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* Defines the data types that VP8E control functions take. Note that
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* additional common controls are defined in vp8.h
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*
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*/
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/* These controls have been deprecated in favor of the flags parameter to
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* vpx_codec_encode(). See the definition of VP8_EFLAG_* above.
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*/
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VPX_CTRL_USE_TYPE_DEPRECATED(VP8E_UPD_ENTROPY, int)
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VPX_CTRL_USE_TYPE_DEPRECATED(VP8E_UPD_REFERENCE, int)
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VPX_CTRL_USE_TYPE_DEPRECATED(VP8E_USE_REFERENCE, int)
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VPX_CTRL_USE_TYPE(VP8E_SET_ROI_MAP, vpx_roi_map_t *)
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VPX_CTRL_USE_TYPE(VP8E_SET_ACTIVEMAP, vpx_active_map_t *)
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VPX_CTRL_USE_TYPE(VP8E_SET_SCALEMODE, vpx_scaling_mode_t *)
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VPX_CTRL_USE_TYPE(VP8E_SET_CPUUSED, int)
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VPX_CTRL_USE_TYPE(VP8E_SET_ENABLEAUTOALTREF, unsigned int)
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VPX_CTRL_USE_TYPE(VP8E_SET_NOISE_SENSITIVITY, unsigned int)
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VPX_CTRL_USE_TYPE(VP8E_SET_SHARPNESS, unsigned int)
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VPX_CTRL_USE_TYPE(VP8E_SET_STATIC_THRESHOLD, unsigned int)
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VPX_CTRL_USE_TYPE(VP8E_SET_TOKEN_PARTITIONS, vp8e_token_partitions)
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VPX_CTRL_USE_TYPE(VP8E_SET_ARNR_MAXFRAMES, unsigned int)
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VPX_CTRL_USE_TYPE(VP8E_SET_ARNR_STRENGTH , unsigned int)
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VPX_CTRL_USE_TYPE(VP8E_SET_ARNR_TYPE , unsigned int)
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VPX_CTRL_USE_TYPE(VP8E_SET_TUNING, vp8e_tuning)
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VPX_CTRL_USE_TYPE(VP8E_SET_CQ_LEVEL , unsigned int)
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VPX_CTRL_USE_TYPE(VP8E_GET_LAST_QUANTIZER, int *)
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VPX_CTRL_USE_TYPE(VP8E_GET_LAST_QUANTIZER_64, int *)
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VPX_CTRL_USE_TYPE(VP8E_SET_MAX_INTRA_BITRATE_PCT, unsigned int)
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/*! @} - end defgroup vp8_encoder */
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#include "vpx_codec_impl_bottom.h"
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#endif
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