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ffmpeg-4.2.2/libavformat/pcmenc.c 3.13 KB
aac5773f   hucm   功能基本完成,接口待打磨
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  /*
   * RAW PCM muxers
   * Copyright (c) 2002 Fabrice Bellard
   *
   * 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
   */
  
  #include "avformat.h"
  #include "rawenc.h"
  
  #define PCMDEF(name_, long_name_, ext, codec)               \
  AVOutputFormat ff_pcm_ ## name_ ## _muxer = {               \
      .name         = #name_,                                 \
      .long_name    = NULL_IF_CONFIG_SMALL(long_name_),       \
      .extensions   = ext,                                    \
      .audio_codec  = codec,                                  \
      .video_codec  = AV_CODEC_ID_NONE,                          \
      .write_packet = ff_raw_write_packet,                    \
      .flags        = AVFMT_NOTIMESTAMPS,                     \
  };
  
  PCMDEF(f64be, "PCM 64-bit floating-point big-endian",
         NULL, AV_CODEC_ID_PCM_F64BE)
  
  PCMDEF(f64le, "PCM 64-bit floating-point little-endian",
         NULL, AV_CODEC_ID_PCM_F64LE)
  
  PCMDEF(f32be, "PCM 32-bit floating-point big-endian",
         NULL, AV_CODEC_ID_PCM_F32BE)
  
  PCMDEF(f32le, "PCM 32-bit floating-point little-endian",
         NULL, AV_CODEC_ID_PCM_F32LE)
  
  PCMDEF(s32be, "PCM signed 32-bit big-endian",
         NULL, AV_CODEC_ID_PCM_S32BE)
  
  PCMDEF(s32le, "PCM signed 32-bit little-endian",
         NULL, AV_CODEC_ID_PCM_S32LE)
  
  PCMDEF(s24be, "PCM signed 24-bit big-endian",
         NULL, AV_CODEC_ID_PCM_S24BE)
  
  PCMDEF(s24le, "PCM signed 24-bit little-endian",
         NULL, AV_CODEC_ID_PCM_S24LE)
  
  PCMDEF(s16be, "PCM signed 16-bit big-endian",
         AV_NE("sw", NULL), AV_CODEC_ID_PCM_S16BE)
  
  PCMDEF(s16le, "PCM signed 16-bit little-endian",
         AV_NE(NULL, "sw"), AV_CODEC_ID_PCM_S16LE)
  
  PCMDEF(s8, "PCM signed 8-bit",
         "sb", AV_CODEC_ID_PCM_S8)
  
  PCMDEF(u32be, "PCM unsigned 32-bit big-endian",
         NULL, AV_CODEC_ID_PCM_U32BE)
  
  PCMDEF(u32le, "PCM unsigned 32-bit little-endian",
         NULL, AV_CODEC_ID_PCM_U32LE)
  
  PCMDEF(u24be, "PCM unsigned 24-bit big-endian",
         NULL, AV_CODEC_ID_PCM_U24BE)
  
  PCMDEF(u24le, "PCM unsigned 24-bit little-endian",
         NULL, AV_CODEC_ID_PCM_U24LE)
  
  PCMDEF(u16be, "PCM unsigned 16-bit big-endian",
         AV_NE("uw", NULL), AV_CODEC_ID_PCM_U16BE)
  
  PCMDEF(u16le, "PCM unsigned 16-bit little-endian",
         AV_NE(NULL, "uw"), AV_CODEC_ID_PCM_U16LE)
  
  PCMDEF(u8, "PCM unsigned 8-bit",
         "ub", AV_CODEC_ID_PCM_U8)
  
  PCMDEF(alaw, "PCM A-law",
         "al", AV_CODEC_ID_PCM_ALAW)
  
  PCMDEF(mulaw, "PCM mu-law",
         "ul", AV_CODEC_ID_PCM_MULAW)
  
  PCMDEF(vidc, "PCM Archimedes VIDC",
         NULL, AV_CODEC_ID_PCM_VIDC)