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gop_structure.h (2206B)

      1 /*
      2 * Copyright (c) 2019, Alliance for Open Media. All rights reserved.
      3 *
      4 * This source code is subject to the terms of the BSD 2 Clause License and
      5 * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
      6 * was not distributed with this source code in the LICENSE file, you can
      7 * obtain it at www.aomedia.org/license/software. If the Alliance for Open
      8 * Media Patent License 1.0 was not distributed with this source code in the
      9 * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
     10 */
     11 
     12 #ifndef AOM_AV1_ENCODER_GOP_STRUCTURE_H_
     13 #define AOM_AV1_ENCODER_GOP_STRUCTURE_H_
     14 
     15 #include "av1/common/av1_common_int.h"
     16 #include "av1/encoder/ratectrl.h"
     17 
     18 #ifdef __cplusplus
     19 extern "C" {
     20 #endif
     21 /*!\cond */
     22 struct AV1_COMP;
     23 struct EncodeFrameParams;
     24 
     25 #define MIN_ARF_GF_BOOST 240
     26 #define NORMAL_BOOST 100
     27 
     28 /*!\endcond */
     29 
     30 /*!\brief Set up the Group-Of-Pictures structure for this GF_GROUP.
     31 *
     32 *\ingroup rate_control
     33 *
     34 * This function defines the Group-Of-Pictures structure for this GF_GROUP.
     35 * This involves deciding where to place the various FRAME_UPDATE_TYPEs in
     36 * the group. It does this primarily by updateing entries in
     37 * cpi->twopass.gf_group.update_type[].
     38 *
     39 * \param[in]    cpi          Top - level encoder instance structure
     40 *
     41 * \remark No return value but this function updates group data structures.
     42 */
     43 void av1_gop_setup_structure(struct AV1_COMP *cpi);
     44 
     45 /*!\brief Check whether a frame in the GOP is a forward key frame
     46 *
     47 *\ingroup rate_control
     48 *
     49 * \param[in]   gf_group       GF/ARF group data structure
     50 * \param[in]   gf_frame_index GOP index
     51 *
     52 * \return Return 1 if it is a forward key frame, otherwise return 0
     53 */
     54 int av1_gop_check_forward_keyframe(const GF_GROUP *gf_group,
     55                                   int gf_frame_index);
     56 
     57 /*!\brief Check whether a frame in the GOP is the second arf
     58 *
     59 *\ingroup rate_control
     60 *
     61 * \param[in]   gf_group       GF/ARF group data structure
     62 * \param[in]   gf_frame_index GOP index
     63 *
     64 * \return Return 1 if it is the second arf
     65 */
     66 int av1_gop_is_second_arf(const GF_GROUP *gf_group, int gf_frame_index);
     67 
     68 #ifdef __cplusplus
     69 }  // extern "C"
     70 #endif
     71 
     72 #endif  // AOM_AV1_ENCODER_GOP_STRUCTURE_H_