movie_read.hh

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/* SPDX-FileCopyrightText: 2001-2002 NaN Holding BV. All rights reserved.
 * SPDX-FileCopyrightText: 2024-2025 Blender Authors
 *
 * SPDX-License-Identifier: GPL-2.0-or-later */

 
#pragma once
 
#include <cstdint>
 
#include "IMB_imbuf_enums.h"
 
#ifdef WITH_FFMPEG
 
extern "C" {
#  include <libavutil/rational.h>
}
 
struct AVFormatContext;
struct AVCodecContext;
struct AVCodec;
struct AVFrame;
struct AVPacket;
struct SwsContext;
#endif
 
struct IDProperty;
struct MovieIndex;
 
struct MovieReader {
  enum class State { Uninitialized, Failed, Valid };
  int ib_flags = 0;
  State state = State::Uninitialized;
  int cur_position = 0; /* index  0 = 1e,  1 = 2e, enz. */
  int duration_in_frames = 0;
  int frs_sec = 0;
  double frs_sec_base = 0.0;
  double start_offset = 0.0;
  int x = 0;
  int y = 0;
  int video_rotation = 0;
 
  /* for number */
  char filepath[1024] = {};
 
  int streamindex = 0;
 
#ifdef WITH_FFMPEG
  AVFormatContext *pFormatCtx = nullptr;
  AVCodecContext *pCodecCtx = nullptr;
  const AVCodec *pCodec = nullptr;
  AVFrame *pFrameRGB = nullptr;
  AVFrame *pFrameDeinterlaced = nullptr;
  SwsContext *img_convert_ctx = nullptr;
  int videoStream = 0;
 
  AVFrame *pFrame = nullptr;
  bool pFrame_complete = false;
  AVFrame *pFrame_backup = nullptr;
  bool pFrame_backup_complete = false;
 
  int64_t cur_pts = 0;
  int64_t cur_key_frame_pts = 0;
  AVPacket *cur_packet = nullptr;
 
  AVRational frame_rate = {1, 1};
 
  bool seek_before_decode = false;
  bool is_float = false;
 
  /* When set, never seek within the video, and only ever decode one frame.
   * This is a workaround for some Ogg files that have full audio but only
   * one frame of "album art" as a video stream in non-Theora format.
   * ffmpeg crashes/aborts when trying to seek within them
   * (https://trac.ffmpeg.org/ticket/10755). */
  bool never_seek_decode_one_frame = false;
#endif
 
  char index_dir[768] = {};
 
  int proxies_tried = 0;
  int indices_tried = 0;
 
  MovieReader *proxy_anim[IMB_PROXY_MAX_SLOT] = {};
  MovieIndex *record_run = nullptr;
  MovieIndex *no_gaps = nullptr;
 
  char colorspace[64] = {};
  char suffix[64] = {}; /* MAX_NAME - multiview */
 
  IDProperty *metadata = nullptr;
};