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_ 73