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ffmpeg-4.2.2/libavcodec/svq1.c 1.42 KB
aac5773f   hucm   功能基本完成,接口待打磨
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  /*
   * SVQ1 decoder
   * ported to MPlayer by Arpi <arpi@thot.banki.hu>
   * ported to libavcodec by Nick Kurshev <nickols_k@mail.ru>
   *
   * Copyright (c) 2002 The Xine project
   * Copyright (c) 2002 The FFmpeg project
   *
   * SVQ1 Encoder (c) 2004 Mike Melanson <melanson@pcisys.net>
   *
   * 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
   */
  
  /**
   * @file
   * Sorenson Vector Quantizer #1 (SVQ1) video codec.
   * For more information of the SVQ1 algorithm, visit:
   *   http://www.pcisys.net/~melanson/codecs/
   */
  
  #include "svq1.h"
  #include "svq1_cb.h"
  #include "svq1_vlc.h"
  
  /* standard video sizes */
  const uint16_t ff_svq1_frame_size_table[7][2] = {
      { 160, 120 }, { 128,  96 }, { 176, 144 }, { 352, 288 },
      { 704, 576 }, { 240, 180 }, { 320, 240 }
  };