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ffmpeg-4.2.2/libavcodec/dnxhdenc.h 3.07 KB
aac5773f   hucm   功能基本完成,接口待打磨
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  /*
   * VC3/DNxHD encoder structure definitions and prototypes
   * Copyright (c) 2007 Baptiste Coudurier <baptiste dot coudurier at smartjog dot com>
   *
   * VC-3 encoder funded by the British Broadcasting Corporation
   *
   * This file is part of FFmpeg.
   *
   * FFmpeg is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Lesser General Public
   * License as published by the Free Software Foundation; either
   * version 2.1 of the License, or (at your option) any later version.
   *
   * FFmpeg is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   * Lesser General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with FFmpeg; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
   */
  
  #ifndef AVCODEC_DNXHDENC_H
  #define AVCODEC_DNXHDENC_H
  
  #include <stdint.h>
  
  #include "config.h"
  
  #include "mpegvideo.h"
  #include "dnxhddata.h"
  
  typedef struct RCCMPEntry {
      uint16_t mb;
      int value;
  } RCCMPEntry;
  
  typedef struct RCEntry {
      int ssd;
      int bits;
  } RCEntry;
  
  typedef struct DNXHDEncContext {
      AVClass *class;
      BlockDSPContext bdsp;
      MpegEncContext m; ///< Used for quantization dsp functions
  
      int cid;
      int profile;
      int bit_depth;
      int is_444;
      const CIDEntry *cid_table;
      uint8_t *msip; ///< Macroblock Scan Indexes Payload
      uint32_t *slice_size;
      uint32_t *slice_offs;
  
      struct DNXHDEncContext *thread[MAX_THREADS];
  
      // Because our samples are either 8 or 16 bits for 8-bit and 10-bit
      // encoding respectively, these refer either to bytes or to two-byte words.
      unsigned dct_y_offset;
      unsigned dct_uv_offset;
      unsigned block_width_l2;
  
      int frame_size;
      int coding_unit_size;
      int data_offset;
  
      int interlaced;
      int cur_field;
  
      int nitris_compat;
      unsigned min_padding;
      int intra_quant_bias;
  
      DECLARE_ALIGNED(32, int16_t, blocks)[12][64];
      DECLARE_ALIGNED(16, uint8_t, edge_buf_y)[512]; // has to hold 16x16 uint16 when depth=10
      DECLARE_ALIGNED(16, uint8_t, edge_buf_uv)[2][512]; // has to hold 16x16 uint16_t when depth=10
  
      int      (*qmatrix_c)     [64];
      int      (*qmatrix_l)     [64];
      uint16_t (*qmatrix_l16)[2][64];
      uint16_t (*qmatrix_c16)[2][64];
  
      unsigned frame_bits;
      uint8_t *src[3];
  
      uint32_t *orig_vlc_codes;
      uint8_t  *orig_vlc_bits;
      uint32_t *vlc_codes;
      uint8_t  *vlc_bits;
      uint16_t *run_codes;
      uint8_t  *run_bits;
  
      /** Rate control */
      unsigned slice_bits;
      unsigned qscale;
      unsigned lambda;
  
      uint16_t *mb_bits;
      uint8_t  *mb_qscale;
  
      RCCMPEntry *mb_cmp;
      RCCMPEntry *mb_cmp_tmp;
      RCEntry    *mb_rc;
  
      void (*get_pixels_8x4_sym)(int16_t *av_restrict /* align 16 */ block,
                                 const uint8_t *pixels, ptrdiff_t line_size);
  } DNXHDEncContext;
  
  void ff_dnxhdenc_init_x86(DNXHDEncContext *ctx);
  
  #endif /* AVCODEC_DNXHDENC_H */