/*
 *  Copyright (c) 2015 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.
 */

#ifndef VP9_VP9_DX_IFACE_H_
#define VP9_VP9_DX_IFACE_H_

#include "vp9/decoder/vp9_decoder.h"

typedef vpx_codec_stream_info_t vp9_stream_info_t;

// This limit is due to framebuffer numbers.
// TODO(hkuang): Remove this limit after implementing ondemand framebuffers.
#define FRAME_CACHE_SIZE 6  // Cache maximum 6 decoded frames.

typedef struct cache_frame {
  int fb_idx;
  vpx_image_t img;
} cache_frame;

struct vpx_codec_alg_priv {
  vpx_codec_priv_t base;
  vpx_codec_dec_cfg_t cfg;
  vp9_stream_info_t si;
  int postproc_cfg_set;
  vp8_postproc_cfg_t postproc_cfg;
  vpx_decrypt_cb decrypt_cb;
  void *decrypt_state;
  vpx_image_t img;
  int img_avail;
  int flushed;
  int invert_tile_order;
  int last_show_frame;  // Index of last output frame.
  int byte_alignment;
  int skip_loop_filter;

  // Frame parallel related.
  int frame_parallel_decode;  // frame-based threading.
  VPxWorker *frame_workers;
  int num_frame_workers;
  int next_submit_worker_id;
  int last_submit_worker_id;
  int next_output_worker_id;
  int available_threads;
  cache_frame frame_cache[FRAME_CACHE_SIZE];
  int frame_cache_write;
  int frame_cache_read;
  int num_cache_frames;
  int need_resync;  // wait for key/intra-only frame
  // BufferPool that holds all reference frames. Shared by all the FrameWorkers.
  BufferPool *buffer_pool;

  // External frame buffer info to save for VP9 common.
  void *ext_priv;  // Private data associated with the external frame buffers.
  vpx_get_frame_buffer_cb_fn_t get_ext_fb_cb;
  vpx_release_frame_buffer_cb_fn_t release_ext_fb_cb;

  // Allow for decoding up to a given spatial layer for SVC stream.
  int svc_decoding;
  int svc_spatial_layer;
};

#endif  // VP9_VP9_DX_IFACE_H_
