/*
 *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
 *  in the file PATENTS.  All contributing project authors may
 *  be found in the AUTHORS file in the root of the source tree.
 */

/*!\defgroup vp8_encoder WebM VP8 Encoder
 * \ingroup vp8
 *
 * @{
 */

module libvpx.vpx.vp8cx;

import libvpx.vpx.vp8;
import libvpx.vpx.vpx_codec;

/*!\file
 * \brief Provides definitions for using the VP8 encoder algorithm within the
 *        vpx Codec Interface.
 */

extern (C) {

/*!\name Algorithm interface for VP8
 *
 * This interface provides the capability to encode raw VP8 streams, as would
 * be found in AVI files.
 * @{
 */

// TODO: I commented these iface here since I don't need them (yet).
//extern vpx_codec_iface_t  vpx_codec_vp8_cx_algo;
extern vpx_codec_iface_t *vpx_codec_vp8_cx();

/* TODO(jkoleszar): These move to VP9 in a later patch set. */
//extern vpx_codec_iface_t  vpx_codec_vp9_cx_algo;
extern vpx_codec_iface_t *vpx_codec_vp9_cx();

/*!@} - end algorithm interface member group*/


/*
 * Algorithm Flags
 */

/*!\brief Don't reference the last frame
 *
 * When this flag is set, the encoder will not use the last frame as a
 * predictor. When not set, the encoder will choose whether to use the
 * last frame or not automatically.
 */
enum VP8_EFLAG_NO_REF_LAST     = (1<<16);


/*!\brief Don't reference the golden frame
 *
 * When this flag is set, the encoder will not use the golden frame as a
 * predictor. When not set, the encoder will choose whether to use the
 * golden frame or not automatically.
 */
enum VP8_EFLAG_NO_REF_GF       = (1<<17);


/*!\brief Don't reference the alternate reference frame
 *
 * When this flag is set, the encoder will not use the alt ref frame as a
 * predictor. When not set, the encoder will choose whether to use the
 * alt ref frame or not automatically.
 */
enum VP8_EFLAG_NO_REF_ARF      = (1<<21);


/*!\brief Don't update the last frame
 *
 * When this flag is set, the encoder will not update the last frame with
 * the contents of the current frame.
 */
enum VP8_EFLAG_NO_UPD_LAST     = (1<<18);


/*!\brief Don't update the golden frame
 *
 * When this flag is set, the encoder will not update the golden frame with
 * the contents of the current frame.
 */
enum VP8_EFLAG_NO_UPD_GF       = (1<<22);


/*!\brief Don't update the alternate reference frame
 *
 * When this flag is set, the encoder will not update the alt ref frame with
 * the contents of the current frame.
 */
enum VP8_EFLAG_NO_UPD_ARF      = (1<<23);


/*!\brief Force golden frame update
 *
 * When this flag is set, the encoder copy the contents of the current frame
 * to the golden frame buffer.
 */
enum VP8_EFLAG_FORCE_GF        = (1<<19);


/*!\brief Force alternate reference frame update
 *
 * When this flag is set, the encoder copy the contents of the current frame
 * to the alternate reference frame buffer.
 */
enum VP8_EFLAG_FORCE_ARF       = (1<<24);


/*!\brief Disable entropy update
 *
 * When this flag is set, the encoder will not update its internal entropy
 * model based on the entropy of this frame.
 */
enum VP8_EFLAG_NO_UPD_ENTROPY  = (1<<20);


/*!\brief VP8 encoder control functions
 *
 * This set of macros define the control functions available for the VP8
 * encoder interface.
 *
 * \sa #vpx_codec_control
 */
enum vp8e_enc_control_id {
  VP8E_UPD_ENTROPY           = 5,  /**< control function to set mode of entropy update in encoder */
  VP8E_UPD_REFERENCE,              /**< control function to set reference update mode in encoder */
  VP8E_USE_REFERENCE,              /**< control function to set which reference frame encoder can use */
  VP8E_SET_ROI_MAP,                /**< control function to pass an ROI map to encoder */
  VP8E_SET_ACTIVEMAP,              /**< control function to pass an Active map to encoder */
  VP8E_SET_SCALEMODE         = 11, /**< control function to set encoder scaling mode */
  /*!\brief control function to set vp8 encoder cpuused
   *
   * Changes in this value influences, among others, the encoder's selection
   * of motion estimation methods. Values greater than 0 will increase encoder
   * speed at the expense of quality.
   * The full set of adjustments can be found in
   * onyx_if.c:vp8_set_speed_features().
   * \todo List highlights of the changes at various levels.
   *
   * \note Valid range: -16..16
   */
  VP8E_SET_CPUUSED           = 13,
  VP8E_SET_ENABLEAUTOALTREF,       /**< control function to enable vp8 to automatic set and use altref frame */
  VP8E_SET_NOISE_SENSITIVITY,      /**< control function to set noise sensitivity */
  VP8E_SET_SHARPNESS,              /**< control function to set sharpness */
  VP8E_SET_STATIC_THRESHOLD,       /**< control function to set the threshold for macroblocks treated static */
  VP8E_SET_TOKEN_PARTITIONS,       /**< control function to set the number of token partitions  */
  VP8E_GET_LAST_QUANTIZER,         /**< return the quantizer chosen by the
                                          encoder for the last frame using the internal
                                          scale */
  VP8E_GET_LAST_QUANTIZER_64,      /**< return the quantizer chosen by the
                                          encoder for the last frame, using the 0..63
                                          scale as used by the rc_*_quantizer config
                                          parameters */
  VP8E_SET_ARNR_MAXFRAMES,         /**< control function to set the max number of frames blurred creating arf*/
  VP8E_SET_ARNR_STRENGTH,         /**< control function to set the filter strength for the arf */
  VP8E_SET_ARNR_TYPE,         /**< control function to set the type of filter to use for the arf*/
  VP8E_SET_TUNING,                 /**< control function to set visual tuning */
  /*!\brief control function to set constrained quality level
   *
   * \attention For this value to be used vpx_codec_enc_cfg_t::g_usage must be
   *            set to #VPX_CQ.
   * \note Valid range: 0..63
   */
  VP8E_SET_CQ_LEVEL,

  /*!\brief Max data rate for Intra frames
   *
   * This value controls additional clamping on the maximum size of a
   * keyframe. It is expressed as a percentage of the average
   * per-frame bitrate, with the special (and default) value 0 meaning
   * unlimited, or no additional clamping beyond the codec's built-in
   * algorithm.
   *
   * For example, to allocate no more than 4.5 frames worth of bitrate
   * to a keyframe, set this to 450.
   *
   */
  VP8E_SET_MAX_INTRA_BITRATE_PCT,


  /* TODO(jkoleszar): Move to vp9cx.h */
  VP9E_SET_LOSSLESS,
  VP9E_SET_TILE_COLUMNS,
  VP9E_SET_TILE_ROWS,
  VP9E_SET_FRAME_PARALLEL_DECODING,
  VP9E_SET_AQ_MODE,

  VP9E_SET_SVC,
  VP9E_SET_SVC_PARAMETERS,
  VP9E_SET_SVC_LAYER_ID
}

/*!\brief vpx 1-D scaling mode
 *
 * This set of constants define 1-D vpx scaling modes
 */
enum vpx_scaling_mode_1d {
  VP8E_NORMAL      = 0,
  VP8E_FOURFIVE    = 1,
  VP8E_THREEFIVE   = 2,
  VP8E_ONETWO      = 3
}
alias VPX_SCALING_MODE = vpx_scaling_mode_1d;


/*!\brief  vpx region of interest map
 *
 * These defines the data structures for the region of interest map
 *
 */

struct vpx_roi_map {
  /*! An id between 0 and 3 for each 16x16 region within a frame. */
  ubyte *roi_map;
  uint rows;       /**< Number of rows. */
  uint cols;       /**< Number of columns. */
  // TODO(paulwilkins): broken for VP9 which has 8 segments
  // q and loop filter deltas for each segment
  // (see MAX_MB_SEGMENTS)
  int delta_q[4];          /**< Quantizer deltas. */
  int delta_lf[4];         /**< Loop filter deltas. */
  /*! Static breakout threshold for each segment. */
  uint static_threshold[4];
} 
alias vpx_roi_map_t = vpx_roi_map;

/*!\brief  vpx active region map
 *
 * These defines the data structures for active region map
 *
 */


struct vpx_active_map {
  ubyte  *active_map; /**< specify an on (1) or off (0) each 16x16 region within a frame */
  uint    rows;       /**< number of rows */
  uint    cols;       /**< number of cols */
}
alias vpx_active_map_t = vpx_active_map;

/*!\brief  vpx image scaling mode
 *
 * This defines the data structure for image scaling mode
 *
 */
struct vpx_scaling_mode {
  VPX_SCALING_MODE    h_scaling_mode;  /**< horizontal scaling mode */
  VPX_SCALING_MODE    v_scaling_mode;  /**< vertical scaling mode   */
}
alias vpx_scaling_mode_t = vpx_scaling_mode;

/*!\brief VP8 token partition mode
 *
 * This defines VP8 partitioning mode for compressed data, i.e., the number of
 * sub-streams in the bitstream. Used for parallelized decoding.
 *
 */

enum vp8e_token_partitions {
  VP8_ONE_TOKENPARTITION   = 0,
  VP8_TWO_TOKENPARTITION   = 1,
  VP8_FOUR_TOKENPARTITION  = 2,
  VP8_EIGHT_TOKENPARTITION = 3
}


/*!\brief VP8 model tuning parameters
 *
 * Changes the encoder to tune for certain types of input material.
 *
 */
enum  vp8e_tuning {
  VP8_TUNE_PSNR,
  VP8_TUNE_SSIM
}

/*!\brief  vp9 svc parameters
 *
 * This defines parameters for svc encoding.
 *
 */
struct vpx_svc_parameters {
  uint width;         /**< width of current spatial layer */
  uint height;        /**< height of current spatial layer */
  int spatial_layer;          /**< current spatial layer number - 0 = base */
  int temporal_layer;         /**< current temporal layer number - 0 = base */
  int flags;                  /**< encode frame flags */
  int max_quantizer;          /**< max quantizer for current layer */
  int min_quantizer;          /**< min quantizer for current layer */
  int distance_from_i_frame;  /**< frame number within current gop */
  int lst_fb_idx;             /**< last frame frame buffer index */
  int gld_fb_idx;             /**< golden frame frame buffer index */
  int alt_fb_idx;             /**< alt reference frame frame buffer index */
}
alias vpx_svc_parameters_t = vpx_svc_parameters;

struct vpx_svc_layer_id {
  int spatial_layer_id;
  int temporal_layer_id;
}
alias vpx_svc_layer_id_t = vpx_svc_layer_id;

/*!\brief VP8 encoder control function parameter type
 *
 * Defines the data types that VP8E control functions take. Note that
 * additional common controls are defined in vp8.h
 *
 */


/* These controls have been deprecated in favor of the flags parameter to
 * vpx_codec_encode(). See the definition of VP8_EFLAG_* above.
 */

/*
VPX_CTRL_USE_TYPE_DEPRECATED(VP8E_UPD_ENTROPY,            int)
VPX_CTRL_USE_TYPE_DEPRECATED(VP8E_UPD_REFERENCE,          int)
VPX_CTRL_USE_TYPE_DEPRECATED(VP8E_USE_REFERENCE,          int)

VPX_CTRL_USE_TYPE(VP8E_SET_ROI_MAP,            vpx_roi_map_t *)
VPX_CTRL_USE_TYPE(VP8E_SET_ACTIVEMAP,          vpx_active_map_t *)
VPX_CTRL_USE_TYPE(VP8E_SET_SCALEMODE,          vpx_scaling_mode_t *)

VPX_CTRL_USE_TYPE(VP9E_SET_SVC,                int)
VPX_CTRL_USE_TYPE(VP9E_SET_SVC_PARAMETERS,     vpx_svc_parameters_t *)
VPX_CTRL_USE_TYPE(VP9E_SET_SVC_LAYER_ID,       vpx_svc_layer_id_t *)

VPX_CTRL_USE_TYPE(VP8E_SET_CPUUSED,            int)
VPX_CTRL_USE_TYPE(VP8E_SET_ENABLEAUTOALTREF,   uint)
VPX_CTRL_USE_TYPE(VP8E_SET_NOISE_SENSITIVITY,  uint)
VPX_CTRL_USE_TYPE(VP8E_SET_SHARPNESS,          uint)
VPX_CTRL_USE_TYPE(VP8E_SET_STATIC_THRESHOLD,   uint)
VPX_CTRL_USE_TYPE(VP8E_SET_TOKEN_PARTITIONS,   int) // vp8e_token_partitions

VPX_CTRL_USE_TYPE(VP8E_SET_ARNR_MAXFRAMES,     uint)
VPX_CTRL_USE_TYPE(VP8E_SET_ARNR_STRENGTH,     uint)
VPX_CTRL_USE_TYPE(VP8E_SET_ARNR_TYPE,     uint)
VPX_CTRL_USE_TYPE(VP8E_SET_TUNING,             int) // vp8e_tuning
VPX_CTRL_USE_TYPE(VP8E_SET_CQ_LEVEL,      uint)

VPX_CTRL_USE_TYPE(VP9E_SET_TILE_COLUMNS,  int)
VPX_CTRL_USE_TYPE(VP9E_SET_TILE_ROWS,  int)

VPX_CTRL_USE_TYPE(VP8E_GET_LAST_QUANTIZER,     int *)
VPX_CTRL_USE_TYPE(VP8E_GET_LAST_QUANTIZER_64,  int *)

VPX_CTRL_USE_TYPE(VP8E_SET_MAX_INTRA_BITRATE_PCT, uint)

VPX_CTRL_USE_TYPE(VP9E_SET_LOSSLESS, uint)

VPX_CTRL_USE_TYPE(VP9E_SET_FRAME_PARALLEL_DECODING, uint)

VPX_CTRL_USE_TYPE(VP9E_SET_AQ_MODE, uint)
*/
/*! @} - end defgroup vp8_encoder */

}  // extern "C"