2 * Copyright (c) 2010 The WebM 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;
33 extern vpx_codec_iface_t* vpx_codec_vp8_cx(void);
36 #if CONFIG_EXPERIMENTAL
37 /*!\brief Algorithm interface for VP8 experimental branch
39 * This interface provides the ability to encode using the "experimental"
40 * VP8 variant, which is bitstream incompatible with the default VP8 encoder.
42 extern vpx_codec_iface_t vpx_codec_vp8x_cx_algo;
50 /*!\brief Don't reference the last frame
52 * When this flag is set, the encoder will not use the last frame as a
53 * predictor. When not set, the encoder will choose whether to use the
54 * last frame or not automatically.
56 #define VP8_EFLAG_NO_REF_LAST (1<<16)
59 /*!\brief Don't reference the golden frame
61 * When this flag is set, the encoder will not use the golden frame as a
62 * predictor. When not set, the encoder will choose whether to use the
63 * golden frame or not automatically.
65 #define VP8_EFLAG_NO_REF_GF (1<<17)
68 /*!\brief Don't reference the alternate reference frame
70 * When this flag is set, the encoder will not use the alt ref frame as a
71 * predictor. When not set, the encoder will choose whether to use the
72 * alt ref frame or not automatically.
74 #define VP8_EFLAG_NO_REF_ARF (1<<21)
77 /*!\brief Don't update the last frame
79 * When this flag is set, the encoder will not update the last frame with
80 * the contents of the current frame.
82 #define VP8_EFLAG_NO_UPD_LAST (1<<18)
85 /*!\brief Don't update the golden frame
87 * When this flag is set, the encoder will not update the golden frame with
88 * the contents of the current frame.
90 #define VP8_EFLAG_NO_UPD_GF (1<<22)
93 /*!\brief Don't update the alternate reference frame
95 * When this flag is set, the encoder will not update the alt ref frame with
96 * the contents of the current frame.
98 #define VP8_EFLAG_NO_UPD_ARF (1<<23)
101 /*!\brief Force golden frame update
103 * When this flag is set, the encoder copy the contents of the current frame
104 * to the golden frame buffer.
106 #define VP8_EFLAG_FORCE_GF (1<<19)
109 /*!\brief Force alternate reference frame update
111 * When this flag is set, the encoder copy the contents of the current frame
112 * to the alternate reference frame buffer.
114 #define VP8_EFLAG_FORCE_ARF (1<<24)
117 /*!\brief Disable entropy update
119 * When this flag is set, the encoder will not update its internal entropy
120 * model based on the entropy of this frame.
122 #define VP8_EFLAG_NO_UPD_ENTROPY (1<<20)
125 /*!\brief VP8 encoder control functions
127 * The set of macros define the control functions of VP8 encoder interface
129 enum vp8e_enc_control_id
131 VP8E_UPD_ENTROPY = 5, /**< control function to set mode of entropy update in encoder */
132 VP8E_UPD_REFERENCE, /**< control function to set reference update mode in encoder */
133 VP8E_USE_REFERENCE, /**< control function to set which reference frame encoder can use */
134 VP8E_SET_ROI_MAP, /**< control function to pass an ROI map to encoder */
135 VP8E_SET_ACTIVEMAP, /**< control function to pass an Active map to encoder */
136 VP8E_SET_SCALEMODE = 11, /**< control function to set encoder scaling mode */
137 VP8E_SET_CPUUSED = 13, /**< control function to set vp8 encoder cpuused */
138 VP8E_SET_ENABLEAUTOALTREF, /**< control function to enable vp8 to automatic set and use altref frame */
139 VP8E_SET_NOISE_SENSITIVITY, /**< control function to set noise sensitivity */
140 VP8E_SET_SHARPNESS, /**< control function to set sharpness */
141 VP8E_SET_STATIC_THRESHOLD, /**< control function to set the threshold for macroblocks treated static */
142 VP8E_SET_TOKEN_PARTITIONS, /**< control function to set the number of token partitions */
143 VP8E_GET_LAST_QUANTIZER, /**< return the quantizer chosen by the
144 encoder for the last frame using the internal
146 VP8E_GET_LAST_QUANTIZER_64, /**< return the quantizer chosen by the
147 encoder for the last frame, using the 0..63
148 scale as used by the rc_*_quantizer config
150 VP8E_SET_ARNR_MAXFRAMES, /**< control function to set the max number of frames blurred creating arf*/
151 VP8E_SET_ARNR_STRENGTH , /**< control function to set the filter strength for the arf */
152 VP8E_SET_ARNR_TYPE , /**< control function to set the type of filter to use for the arf*/
155 /*!\brief vpx 1-D scaling mode
157 * This set of constants define 1-D vpx scaling modes
159 typedef enum vpx_scaling_mode_1d
168 /*!\brief vpx region of interest map
170 * These defines the data structures for the region of interest map
174 typedef struct vpx_roi_map
176 unsigned char *roi_map; /**< specify an id between 0 and 3 for each 16x16 region within a frame */
177 unsigned int rows; /**< number of rows */
178 unsigned int cols; /**< number of cols */
179 int delta_q[4]; /**< quantizer delta [-64, 64] off baseline for regions with id between 0 and 3*/
180 int delta_lf[4]; /**< loop filter strength delta [-32, 32] for regions with id between 0 and 3 */
181 unsigned int static_threshold[4];/**< threshold for region to be treated as static */
184 /*!\brief vpx active region map
186 * These defines the data structures for active region map
191 typedef struct vpx_active_map
193 unsigned char *active_map; /**< specify an on (1) or off (0) each 16x16 region within a frame */
194 unsigned int rows; /**< number of rows */
195 unsigned int cols; /**< number of cols */
198 /*!\brief vpx image scaling mode
200 * This defines the data structure for image scaling mode
203 typedef struct vpx_scaling_mode
205 VPX_SCALING_MODE h_scaling_mode; /**< horizontal scaling mode */
206 VPX_SCALING_MODE v_scaling_mode; /**< vertical scaling mode */
207 } vpx_scaling_mode_t;
209 /*!\brief VP8 encoding mode
211 * This defines VP8 encoding mode
216 VP8_BEST_QUALITY_ENCODING,
217 VP8_GOOD_QUALITY_ENCODING,
218 VP8_REAL_TIME_ENCODING
219 } vp8e_encoding_mode;
221 /*!\brief VP8 token partition mode
223 * This defines VP8 partitioning mode for compressed data, i.e., the number of
224 * sub-streams in the bitstream. Used for parallelized decoding.
230 VP8_ONE_TOKENPARTITION = 0,
231 VP8_TWO_TOKENPARTITION = 1,
232 VP8_FOUR_TOKENPARTITION = 2,
233 VP8_EIGHT_TOKENPARTITION = 3,
234 } vp8e_token_partitions;
237 /*!\brief VP8 encoder control function parameter type
239 * Defines the data types that VP8E control functions take. Note that
240 * additional common controls are defined in vp8.h
245 /* These controls have been deprecated in favor of the flags parameter to
246 * vpx_codec_encode(). See the definition of VP8_EFLAG_* above.
248 VPX_CTRL_USE_TYPE_DEPRECATED(VP8E_UPD_ENTROPY, int)
249 VPX_CTRL_USE_TYPE_DEPRECATED(VP8E_UPD_REFERENCE, int)
250 VPX_CTRL_USE_TYPE_DEPRECATED(VP8E_USE_REFERENCE, int)
252 VPX_CTRL_USE_TYPE(VP8E_SET_ROI_MAP, vpx_roi_map_t *)
253 VPX_CTRL_USE_TYPE(VP8E_SET_ACTIVEMAP, vpx_active_map_t *)
254 VPX_CTRL_USE_TYPE(VP8E_SET_SCALEMODE, vpx_scaling_mode_t *)
256 VPX_CTRL_USE_TYPE(VP8E_SET_CPUUSED, int)
257 VPX_CTRL_USE_TYPE(VP8E_SET_ENABLEAUTOALTREF, unsigned int)
258 VPX_CTRL_USE_TYPE(VP8E_SET_NOISE_SENSITIVITY, unsigned int)
259 VPX_CTRL_USE_TYPE(VP8E_SET_SHARPNESS, unsigned int)
260 VPX_CTRL_USE_TYPE(VP8E_SET_STATIC_THRESHOLD, unsigned int)
261 VPX_CTRL_USE_TYPE(VP8E_SET_TOKEN_PARTITIONS, vp8e_token_partitions)
263 VPX_CTRL_USE_TYPE(VP8E_SET_ARNR_MAXFRAMES, unsigned int)
264 VPX_CTRL_USE_TYPE(VP8E_SET_ARNR_STRENGTH , unsigned int)
265 VPX_CTRL_USE_TYPE(VP8E_SET_ARNR_TYPE , unsigned int)
268 VPX_CTRL_USE_TYPE(VP8E_GET_LAST_QUANTIZER, int *)
269 VPX_CTRL_USE_TYPE(VP8E_GET_LAST_QUANTIZER_64, int *)
271 /*! @} - end defgroup vp8_encoder */
272 #include "vpx/vpx_codec_impl_bottom.h"