2 * Copyright (c) 2010 The VP8 project authors. All Rights Reserved.
4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
12 /*!\defgroup vp8_encoder WebM VP8 Encoder
20 * \brief Provides definitions for using the VP8 encoder algorithm within the
21 * vpx Codec Interface.
25 #include "vpx/vpx_codec_impl_top.h"
27 /*!\brief Algorithm interface for VP8
29 * This interface provides the capability to encode raw VP8 streams, as would
30 * be found in AVI files.
32 extern vpx_codec_iface_t vpx_codec_vp8_cx_algo;
35 #if CONFIG_EXPERIMENTAL
36 /*!\brief Algorithm interface for VP8 experimental branch
38 * This interface provides the ability to encode using the "experimental"
39 * VP8 variant, which is bitstream incompatible with the default VP8 encoder.
41 extern vpx_codec_iface_t vpx_codec_vp8x_cx_algo;
49 /*!\brief Don't reference the last frame
51 * When this flag is set, the encoder will not use the last frame as a
52 * predictor. When not set, the encoder will choose whether to use the
53 * last frame or not automatically.
55 #define VP8_EFLAG_NO_REF_LAST (1<<16)
58 /*!\brief Don't reference the golden frame
60 * When this flag is set, the encoder will not use the golden frame as a
61 * predictor. When not set, the encoder will choose whether to use the
62 * golden frame or not automatically.
64 #define VP8_EFLAG_NO_REF_GF (1<<17)
67 /*!\brief Don't reference the alternate reference frame
69 * When this flag is set, the encoder will not use the alt ref frame as a
70 * predictor. When not set, the encoder will choose whether to use the
71 * alt ref frame or not automatically.
73 #define VP8_EFLAG_NO_REF_ARF (1<<21)
76 /*!\brief Don't update the last frame
78 * When this flag is set, the encoder will not update the last frame with
79 * the contents of the current frame.
81 #define VP8_EFLAG_NO_UPD_LAST (1<<18)
84 /*!\brief Don't update the golden frame
86 * When this flag is set, the encoder will not update the golden frame with
87 * the contents of the current frame.
89 #define VP8_EFLAG_NO_UPD_GF (1<<22)
92 /*!\brief Don't update the alternate reference frame
94 * When this flag is set, the encoder will not update the alt ref frame with
95 * the contents of the current frame.
97 #define VP8_EFLAG_NO_UPD_ARF (1<<23)
100 /*!\brief Force golden frame update
102 * When this flag is set, the encoder copy the contents of the current frame
103 * to the golden frame buffer.
105 #define VP8_EFLAG_FORCE_GF (1<<19)
108 /*!\brief Force alternate reference frame update
110 * When this flag is set, the encoder copy the contents of the current frame
111 * to the alternate reference frame buffer.
113 #define VP8_EFLAG_FORCE_ARF (1<<24)
116 /*!\brief Disable entropy update
118 * When this flag is set, the encoder will not update its internal entropy
119 * model based on the entropy of this frame.
121 #define VP8_EFLAG_NO_UPD_ENTROPY (1<<20)
124 /*!\brief VP8 encoder control functions
126 * The set of macros define the control functions of VP8 encoder interface
128 enum vp8e_enc_control_id
130 VP8E_UPD_ENTROPY = 5, /**< control function to set mode of entropy update in encoder */
131 VP8E_UPD_REFERENCE, /**< control function to set reference update mode in encoder */
132 VP8E_USE_REFERENCE, /**< control function to set which reference frame encoder can use */
133 VP8E_SET_ROI_MAP, /**< control function to pass an ROI map to encoder */
134 VP8E_SET_ACTIVEMAP, /**< control function to pass an Active map to encoder */
135 VP8E_SET_SCALEMODE = 11, /**< control function to set encoder scaling mode */
136 VP8E_SET_CPUUSED = 13, /**< control function to set vp8 encoder cpuused */
137 VP8E_SET_ENABLEAUTOALTREF, /**< control function to enable vp8 to automatic set and use altref frame */
138 VP8E_SET_NOISE_SENSITIVITY, /**< control function to set noise sensitivity */
139 VP8E_SET_SHARPNESS, /**< control function to set sharpness */
140 VP8E_SET_STATIC_THRESHOLD, /**< control function to set the threshold for macroblocks treated static */
141 VP8E_SET_TOKEN_PARTITIONS, /**< control function to set the number of token partitions */
142 VP8E_GET_LAST_QUANTIZER, /**< return the quantizer chosen by the
143 encoder for the last frame using the internal
145 VP8E_GET_LAST_QUANTIZER_64, /**< return the quantizer chosen by the
146 encoder for the last frame, using the 0..63
147 scale as used by the rc_*_quantizer config
149 VP8E_SET_ARNR_MAXFRAMES, /**< control function to set the max number of frames blurred creating arf*/
150 VP8E_SET_ARNR_STRENGTH , /**< control function to set the filter strength for the arf */
151 VP8E_SET_ARNR_TYPE , /**< control function to set the type of filter to use for the arf*/
154 /*!\brief vpx 1-D scaling mode
156 * This set of constants define 1-D vpx scaling modes
158 typedef enum vpx_scaling_mode_1d
167 /*!\brief vpx region of interest map
169 * These defines the data structures for the region of interest map
173 typedef struct vpx_roi_map
175 unsigned char *roi_map; /**< specify an id between 0 and 3 for each 16x16 region within a frame */
176 unsigned int rows; /**< number of rows */
177 unsigned int cols; /**< number of cols */
178 int delta_q[4]; /**< quantizer delta [-64, 64] off baseline for regions with id between 0 and 3*/
179 int delta_lf[4]; /**< loop filter strength delta [-32, 32] for regions with id between 0 and 3 */
180 unsigned int static_threshold[4];/**< threshold for region to be treated as static */
183 /*!\brief vpx active region map
185 * These defines the data structures for active region map
190 typedef struct vpx_active_map
192 unsigned char *active_map; /**< specify an on (1) or off (0) each 16x16 region within a frame */
193 unsigned int rows; /**< number of rows */
194 unsigned int cols; /**< number of cols */
197 /*!\brief vpx image scaling mode
199 * This defines the data structure for image scaling mode
202 typedef struct vpx_scaling_mode
204 VPX_SCALING_MODE h_scaling_mode; /**< horizontal scaling mode */
205 VPX_SCALING_MODE v_scaling_mode; /**< vertical scaling mode */
206 } vpx_scaling_mode_t;
208 /*!\brief VP8 encoding mode
210 * This defines VP8 encoding mode
215 VP8_BEST_QUALITY_ENCODING,
216 VP8_GOOD_QUALITY_ENCODING,
217 VP8_REAL_TIME_ENCODING
218 } vp8e_encoding_mode;
220 /*!\brief VP8 token partition mode
222 * This defines VP8 partitioning mode for compressed data, i.e., the number of
223 * sub-streams in the bitstream. Used for parallelized decoding.
229 VP8_ONE_TOKENPARTITION = 0,
230 VP8_TWO_TOKENPARTITION = 1,
231 VP8_FOUR_TOKENPARTITION = 2,
232 VP8_EIGHT_TOKENPARTITION = 3,
233 } vp8e_token_partitions;
236 /*!\brief VP8 encoder control function parameter type
238 * Defines the data types that VP8E control functions take. Note that
239 * additional common controls are defined in vp8.h
244 /* These controls have been deprecated in favor of the flags parameter to
245 * vpx_codec_encode(). See the definition of VP8_EFLAG_* above.
247 VPX_CTRL_USE_TYPE_DEPRECATED(VP8E_UPD_ENTROPY, int)
248 VPX_CTRL_USE_TYPE_DEPRECATED(VP8E_UPD_REFERENCE, int)
249 VPX_CTRL_USE_TYPE_DEPRECATED(VP8E_USE_REFERENCE, int)
251 VPX_CTRL_USE_TYPE(VP8E_SET_ROI_MAP, vpx_roi_map_t *)
252 VPX_CTRL_USE_TYPE(VP8E_SET_ACTIVEMAP, vpx_active_map_t *)
253 VPX_CTRL_USE_TYPE(VP8E_SET_SCALEMODE, vpx_scaling_mode_t *)
255 VPX_CTRL_USE_TYPE(VP8E_SET_CPUUSED, int)
256 VPX_CTRL_USE_TYPE(VP8E_SET_ENABLEAUTOALTREF, unsigned int)
257 VPX_CTRL_USE_TYPE(VP8E_SET_NOISE_SENSITIVITY, unsigned int)
258 VPX_CTRL_USE_TYPE(VP8E_SET_SHARPNESS, unsigned int)
259 VPX_CTRL_USE_TYPE(VP8E_SET_STATIC_THRESHOLD, unsigned int)
260 VPX_CTRL_USE_TYPE(VP8E_SET_TOKEN_PARTITIONS, vp8e_token_partitions)
262 VPX_CTRL_USE_TYPE(VP8E_SET_ARNR_MAXFRAMES, unsigned int)
263 VPX_CTRL_USE_TYPE(VP8E_SET_ARNR_STRENGTH , unsigned int)
264 VPX_CTRL_USE_TYPE(VP8E_SET_ARNR_TYPE , unsigned int)
267 VPX_CTRL_USE_TYPE(VP8E_GET_LAST_QUANTIZER, int *)
268 VPX_CTRL_USE_TYPE(VP8E_GET_LAST_QUANTIZER_64, int *)
270 /*! @} - end defgroup vp8_encoder */
271 #include "vpx/vpx_codec_impl_bottom.h"