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.
13 /*!\defgroup vp8_encoder WebM VP8 Encoder
21 * \brief Provides definitions for using the VP8 encoder algorithm within the
22 * vpx Codec Interface.
29 /*!\name Algorithm interface for VP8
31 * This interface provides the capability to encode raw VP8 streams, as would
32 * be found in AVI files.
35 extern vpx_codec_iface_t vpx_codec_vp8_cx_algo;
36 extern vpx_codec_iface_t *vpx_codec_vp8_cx(void);
38 /* TODO(jkoleszar): These move to VP9 in a later patch set. */
39 extern vpx_codec_iface_t vpx_codec_vp9_cx_algo;
40 extern vpx_codec_iface_t *vpx_codec_vp9_cx(void);
42 /*!@} - end algorithm interface member group*/
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 * This set of macros define the control functions available for the VP8
129 * \sa #vpx_codec_control
131 enum vp8e_enc_control_id {
132 VP8E_UPD_ENTROPY = 5, /**< control function to set mode of entropy update in encoder */
133 VP8E_UPD_REFERENCE, /**< control function to set reference update mode in encoder */
134 VP8E_USE_REFERENCE, /**< control function to set which reference frame encoder can use */
135 VP8E_SET_ROI_MAP, /**< control function to pass an ROI map to encoder */
136 VP8E_SET_ACTIVEMAP, /**< control function to pass an Active map to encoder */
137 VP8E_SET_SCALEMODE = 11, /**< control function to set encoder scaling mode */
138 /*!\brief control function to set vp8 encoder cpuused
140 * Changes in this value influences, among others, the encoder's selection
141 * of motion estimation methods. Values greater than 0 will increase encoder
142 * speed at the expense of quality.
143 * The full set of adjustments can be found in
144 * onyx_if.c:vp8_set_speed_features().
145 * \todo List highlights of the changes at various levels.
147 * \note Valid range: -16..16
149 VP8E_SET_CPUUSED = 13,
150 VP8E_SET_ENABLEAUTOALTREF, /**< control function to enable vp8 to automatic set and use altref frame */
151 /*!\brief control function to set noise sensitivity
153 * 0: off, 1: OnYOnly, 2: OnYUV,
154 * 3: OnYUVAggressive, 4: Adaptive
156 VP8E_SET_NOISE_SENSITIVITY,
157 VP8E_SET_SHARPNESS, /**< control function to set sharpness */
158 VP8E_SET_STATIC_THRESHOLD, /**< control function to set the threshold for macroblocks treated static */
159 VP8E_SET_TOKEN_PARTITIONS, /**< control function to set the number of token partitions */
160 VP8E_GET_LAST_QUANTIZER, /**< return the quantizer chosen by the
161 encoder for the last frame using the internal
163 VP8E_GET_LAST_QUANTIZER_64, /**< return the quantizer chosen by the
164 encoder for the last frame, using the 0..63
165 scale as used by the rc_*_quantizer config
167 VP8E_SET_ARNR_MAXFRAMES, /**< control function to set the max number of frames blurred creating arf*/
168 VP8E_SET_ARNR_STRENGTH, //!< control function to set the filter
169 //!< strength for the arf
171 /*!\deprecated control function to set the filter type to use for the arf */
174 VP8E_SET_TUNING, /**< control function to set visual tuning */
175 /*!\brief control function to set constrained quality level
177 * \attention For this value to be used vpx_codec_enc_cfg_t::g_usage must be
179 * \note Valid range: 0..63
183 /*!\brief Max data rate for Intra frames
185 * This value controls additional clamping on the maximum size of a
186 * keyframe. It is expressed as a percentage of the average
187 * per-frame bitrate, with the special (and default) value 0 meaning
188 * unlimited, or no additional clamping beyond the codec's built-in
191 * For example, to allocate no more than 4.5 frames worth of bitrate
192 * to a keyframe, set this to 450.
195 VP8E_SET_MAX_INTRA_BITRATE_PCT,
196 VP8E_SET_FRAME_FLAGS, /**< control function to set reference and update frame flags */
198 /*!\brief Max data rate for Inter frames
200 * This value controls additional clamping on the maximum size of an
201 * inter frame. It is expressed as a percentage of the average
202 * per-frame bitrate, with the special (and default) value 0 meaning
203 * unlimited, or no additional clamping beyond the codec's built-in
206 * For example, to allow no more than 4.5 frames worth of bitrate
207 * to an inter frame, set this to 450.
210 VP8E_SET_MAX_INTER_BITRATE_PCT,
212 /*!\brief Boost percentage for Golden Frame in CBR mode
214 * This value controls the amount of boost given to Golden Frame in
215 * CBR mode. It is expressed as a percentage of the average
216 * per-frame bitrate, with the special (and default) value 0 meaning
217 * the feature is off, i.e., no golden frame boost in CBR mode and
218 * average bitrate target is used.
220 * For example, to allow 100% more bits, i.e, 2X, in a golden frame
221 * than average frame, set this to 100.
224 VP8E_SET_GF_CBR_BOOST_PCT,
226 /*!\brief Codec control function to set the temporal layer id
228 * For temporal scalability: this control allows the application to set the
229 * layer id for each frame to be encoded. Note that this control must be set
230 * for every frame prior to encoding. The usage of this control function
231 * supersedes the internal temporal pattern counter, which is now deprecated.
233 VP8E_SET_TEMPORAL_LAYER_ID,
235 VP8E_SET_SCREEN_CONTENT_MODE, /**<control function to set encoder screen content mode */
237 /*!\brief Codec control function to set lossless encoding mode
239 * VP9 can operate in lossless encoding mode, in which the bitstream
240 * produced will be able to decode and reconstruct a perfect copy of
241 * input source. This control function provides a mean to switch encoder
242 * into lossless coding mode(1) or normal coding mode(0) that may be lossy.
243 * 0 = lossy coding mode
244 * 1 = lossless coding mode
246 * By default, encoder operates in normal coding mode (maybe lossy).
250 /*!\brief Codec control function to set number of tile columns
252 * In encoding and decoding, VP9 allows an input image frame be partitioned
253 * into separated vertical tile columns, which can be encoded or decoded
254 * independently. This enables easy implementation of parallel encoding and
255 * decoding. This control requests the encoder to use column tiles in
256 * encoding an input frame, with number of tile columns (in Log2 unit) as
262 * n = 2**n tile columns
263 * The requested tile columns will be capped by encoder based on image size
264 * limitation (The minimum width of a tile column is 256 pixel, the maximum
267 * By default, the value is 0, i.e. one single column tile for entire image.
269 VP9E_SET_TILE_COLUMNS,
271 /*!\brief Codec control function to set number of tile rows
273 * In encoding and decoding, VP9 allows an input image frame be partitioned
274 * into separated horizontal tile rows. Tile rows are encoded or decoded
275 * sequentially. Even though encoding/decoding of later tile rows depends on
276 * earlier ones, this allows the encoder to output data packets for tile rows
277 * prior to completely processing all tile rows in a frame, thereby reducing
278 * the latency in processing between input and output. The parameter
279 * for this control describes the number of tile rows, which has a valid
285 * By default, the value is 0, i.e. one single row tile for entire image.
289 /*!\brief Codec control function to enable frame parallel decoding feature
291 * VP9 has a bitstream feature to reduce decoding dependency between frames
292 * by turning off backward update of probability context used in encoding
293 * and decoding. This allows staged parallel processing of more than one
294 * video frames in the decoder. This control function provides a mean to
295 * turn this feature on or off for bitstreams produced by encoder.
297 * By default, this feature is off.
299 VP9E_SET_FRAME_PARALLEL_DECODING,
301 /*!\brief Codec control function to set adaptive quantization mode
303 * VP9 has a segment based feature that allows encoder to adaptively change
304 * quantization parameter for each segment within a frame to improve the
305 * subjective quality. This control makes encoder operate in one of the
306 * several AQ_modes supported.
308 * By default, encoder operates with AQ_Mode 0(adaptive quantization off).
312 /*!\brief Codec control function to enable/disable periodic Q boost
314 * One VP9 encoder speed feature is to enable quality boost by lowering
315 * frame level Q periodically. This control function provides a mean to
316 * turn on/off this feature.
320 * By default, the encoder is allowed to use this feature for appropriate
323 VP9E_SET_FRAME_PERIODIC_BOOST,
325 /*!\brief control function to set noise sensitivity
329 VP9E_SET_NOISE_SENSITIVITY,
332 VP9E_SET_SVC_PARAMETERS,
334 /*!\brief control function to set svc layer for spatial and temporal.
335 * \note Valid ranges: 0..#vpx_codec_enc_cfg::ss_number_layers for spatial
336 * layer and 0..#vpx_codec_enc_cfg::ts_number_layers for
339 VP9E_SET_SVC_LAYER_ID,
341 /*!\brief control function to set content type.
342 * \note Valid parameter range:
343 * VP9E_CONTENT_DEFAULT = Regular video content (Default)
344 * VP9E_CONTENT_SCREEN = Screen capture content
346 VP9E_SET_TUNE_CONTENT,
348 /*!\brief control function to get svc layer ID.
349 * \note The layer ID returned is for the data packet from the registered
352 VP9E_GET_SVC_LAYER_ID,
354 /*!\brief control function to register callback for getting per layer packet.
355 * \note Parameter for this control function is a structure with a callback
356 * function and a pointer to private data used by the callback.
358 VP9E_REGISTER_CX_CALLBACK,
360 /*!\brief control function to set color space info.
361 * \note Valid ranges: 0..7, default is "UNKNOWN".
371 VP9E_SET_COLOR_SPACE,
374 /*!\brief vpx 1-D scaling mode
376 * This set of constants define 1-D vpx scaling modes
378 typedef enum vpx_scaling_mode_1d {
386 /*!\brief vpx region of interest map
388 * These defines the data structures for the region of interest map
392 typedef struct vpx_roi_map {
393 /*! An id between 0 and 3 for each 16x16 region within a frame. */
394 unsigned char *roi_map;
395 unsigned int rows; /**< Number of rows. */
396 unsigned int cols; /**< Number of columns. */
397 // TODO(paulwilkins): broken for VP9 which has 8 segments
398 // q and loop filter deltas for each segment
399 // (see MAX_MB_SEGMENTS)
400 int delta_q[4]; /**< Quantizer deltas. */
401 int delta_lf[4]; /**< Loop filter deltas. */
402 /*! Static breakout threshold for each segment. */
403 unsigned int static_threshold[4];
406 /*!\brief vpx active region map
408 * These defines the data structures for active region map
413 typedef struct vpx_active_map {
414 unsigned char *active_map; /**< specify an on (1) or off (0) each 16x16 region within a frame */
415 unsigned int rows; /**< number of rows */
416 unsigned int cols; /**< number of cols */
419 /*!\brief vpx image scaling mode
421 * This defines the data structure for image scaling mode
424 typedef struct vpx_scaling_mode {
425 VPX_SCALING_MODE h_scaling_mode; /**< horizontal scaling mode */
426 VPX_SCALING_MODE v_scaling_mode; /**< vertical scaling mode */
427 } vpx_scaling_mode_t;
429 /*!\brief VP8 token partition mode
431 * This defines VP8 partitioning mode for compressed data, i.e., the number of
432 * sub-streams in the bitstream. Used for parallelized decoding.
437 VP8_ONE_TOKENPARTITION = 0,
438 VP8_TWO_TOKENPARTITION = 1,
439 VP8_FOUR_TOKENPARTITION = 2,
440 VP8_EIGHT_TOKENPARTITION = 3
441 } vp8e_token_partitions;
443 /*!brief VP9 encoder content type */
445 VP9E_CONTENT_DEFAULT,
450 /*!\brief VP8 model tuning parameters
452 * Changes the encoder to tune for certain types of input material.
460 /*!\brief vp9 svc layer parameters
462 * This defines the spatial and temporal layer id numbers for svc encoding.
463 * This is used with the #VP9E_SET_SVC_LAYER_ID control to set the spatial and
464 * temporal layer id for the current frame.
467 typedef struct vpx_svc_layer_id {
468 int spatial_layer_id; /**< Spatial layer id number. */
469 int temporal_layer_id; /**< Temporal layer id number. */
470 } vpx_svc_layer_id_t;
472 /*!\brief VP8 encoder control function parameter type
474 * Defines the data types that VP8E control functions take. Note that
475 * additional common controls are defined in vp8.h
480 /* These controls have been deprecated in favor of the flags parameter to
481 * vpx_codec_encode(). See the definition of VP8_EFLAG_* above.
483 VPX_CTRL_USE_TYPE_DEPRECATED(VP8E_UPD_ENTROPY, int)
484 VPX_CTRL_USE_TYPE_DEPRECATED(VP8E_UPD_REFERENCE, int)
485 VPX_CTRL_USE_TYPE_DEPRECATED(VP8E_USE_REFERENCE, int)
487 VPX_CTRL_USE_TYPE(VP8E_SET_FRAME_FLAGS, int)
488 VPX_CTRL_USE_TYPE(VP8E_SET_TEMPORAL_LAYER_ID, int)
489 VPX_CTRL_USE_TYPE(VP8E_SET_ROI_MAP, vpx_roi_map_t *)
490 VPX_CTRL_USE_TYPE(VP8E_SET_ACTIVEMAP, vpx_active_map_t *)
491 VPX_CTRL_USE_TYPE(VP8E_SET_SCALEMODE, vpx_scaling_mode_t *)
493 VPX_CTRL_USE_TYPE(VP9E_SET_SVC, int)
494 VPX_CTRL_USE_TYPE(VP9E_SET_SVC_PARAMETERS, void *)
495 VPX_CTRL_USE_TYPE(VP9E_REGISTER_CX_CALLBACK, void *)
496 VPX_CTRL_USE_TYPE(VP9E_SET_SVC_LAYER_ID, vpx_svc_layer_id_t *)
498 VPX_CTRL_USE_TYPE(VP8E_SET_CPUUSED, int)
499 VPX_CTRL_USE_TYPE(VP8E_SET_ENABLEAUTOALTREF, unsigned int)
500 VPX_CTRL_USE_TYPE(VP8E_SET_NOISE_SENSITIVITY, unsigned int)
501 VPX_CTRL_USE_TYPE(VP8E_SET_SHARPNESS, unsigned int)
502 VPX_CTRL_USE_TYPE(VP8E_SET_STATIC_THRESHOLD, unsigned int)
503 VPX_CTRL_USE_TYPE(VP8E_SET_TOKEN_PARTITIONS, int) /* vp8e_token_partitions */
505 VPX_CTRL_USE_TYPE(VP8E_SET_ARNR_MAXFRAMES, unsigned int)
506 VPX_CTRL_USE_TYPE(VP8E_SET_ARNR_STRENGTH, unsigned int)
507 VPX_CTRL_USE_TYPE_DEPRECATED(VP8E_SET_ARNR_TYPE, unsigned int)
508 VPX_CTRL_USE_TYPE(VP8E_SET_TUNING, int) /* vp8e_tuning */
509 VPX_CTRL_USE_TYPE(VP8E_SET_CQ_LEVEL, unsigned int)
511 VPX_CTRL_USE_TYPE(VP9E_SET_TILE_COLUMNS, int)
512 VPX_CTRL_USE_TYPE(VP9E_SET_TILE_ROWS, int)
514 VPX_CTRL_USE_TYPE(VP8E_GET_LAST_QUANTIZER, int *)
515 VPX_CTRL_USE_TYPE(VP8E_GET_LAST_QUANTIZER_64, int *)
516 VPX_CTRL_USE_TYPE(VP9E_GET_SVC_LAYER_ID, vpx_svc_layer_id_t *)
518 VPX_CTRL_USE_TYPE(VP8E_SET_MAX_INTRA_BITRATE_PCT, unsigned int)
519 VPX_CTRL_USE_TYPE(VP8E_SET_MAX_INTER_BITRATE_PCT, unsigned int)
521 VPX_CTRL_USE_TYPE(VP8E_SET_GF_CBR_BOOST_PCT, unsigned int)
523 VPX_CTRL_USE_TYPE(VP8E_SET_SCREEN_CONTENT_MODE, unsigned int)
525 VPX_CTRL_USE_TYPE(VP9E_SET_LOSSLESS, unsigned int)
527 VPX_CTRL_USE_TYPE(VP9E_SET_FRAME_PARALLEL_DECODING, unsigned int)
529 VPX_CTRL_USE_TYPE(VP9E_SET_AQ_MODE, unsigned int)
531 VPX_CTRL_USE_TYPE(VP9E_SET_FRAME_PERIODIC_BOOST, unsigned int)
533 VPX_CTRL_USE_TYPE(VP9E_SET_NOISE_SENSITIVITY, unsigned int)
535 VPX_CTRL_USE_TYPE(VP9E_SET_TUNE_CONTENT, int) /* vp9e_tune_content */
537 VPX_CTRL_USE_TYPE(VP9E_SET_COLOR_SPACE, int)
538 /*! @} - end defgroup vp8_encoder */
543 #endif // VPX_VP8CX_H_