blob: f0c33e061cff29c7c57fc2a02b0292e7f985c16b (
plain) (
tree)
|
|
(*
* 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
*
* This is a part of the Pascal port of ffmpeg.
* - Changes and updates by the UltraStar Deluxe Team
*
* Conversion of libavutil/audioconvert.h
* avutil version 50.43.0
*
*)
(**
* @file
* audio conversion routines
*)
const
{* Audio channel masks *}
AV_CH_FRONT_LEFT = $00000001;
AV_CH_FRONT_RIGHT = $00000002;
AV_CH_FRONT_CENTER = $00000004;
AV_CH_LOW_FREQUENCY = $00000008;
AV_CH_BACK_LEFT = $00000010;
AV_CH_BACK_RIGHT = $00000020;
AV_CH_FRONT_LEFT_OF_CENTER = $00000040;
AV_CH_FRONT_RIGHT_OF_CENTER = $00000080;
AV_CH_BACK_CENTER = $00000100;
AV_CH_SIDE_LEFT = $00000200;
AV_CH_SIDE_RIGHT = $00000400;
AV_CH_TOP_CENTER = $00000800;
AV_CH_TOP_FRONT_LEFT = $00001000;
AV_CH_TOP_FRONT_CENTER = $00002000;
AV_CH_TOP_FRONT_RIGHT = $00004000;
AV_CH_TOP_BACK_LEFT = $00008000;
AV_CH_TOP_BACK_CENTER = $00010000;
AV_CH_TOP_BACK_RIGHT = $00020000;
AV_CH_STEREO_LEFT = $20000000; ///< Stereo downmix.
AV_CH_STEREO_RIGHT = $40000000; ///< See AV_CH_STEREO_LEFT.
(** Channel mask value used for AVCodecContext.request_channel_layout
* to indicate that the user requests the channel order of the decoder output
* to be the native codec channel order.
*)
AV_CH_LAYOUT_NATIVE = $8000000000000000;
(* Audio channel convenience macros *)
AV_CH_LAYOUT_MONO = (AV_CH_FRONT_CENTER);
AV_CH_LAYOUT_STEREO = (AV_CH_FRONT_LEFT or AV_CH_FRONT_RIGHT);
AV_CH_LAYOUT_2_1 = (AV_CH_LAYOUT_STEREO or AV_CH_BACK_CENTER);
AV_CH_LAYOUT_SURROUND = (AV_CH_LAYOUT_STEREO or AV_CH_FRONT_CENTER);
AV_CH_LAYOUT_4POINT0 = (AV_CH_LAYOUT_SURROUND or AV_CH_BACK_CENTER);
AV_CH_LAYOUT_2_2 = (AV_CH_LAYOUT_STEREO or AV_CH_SIDE_LEFT or AV_CH_SIDE_RIGHT);
AV_CH_LAYOUT_QUAD = (AV_CH_LAYOUT_STEREO or AV_CH_BACK_LEFT or AV_CH_BACK_RIGHT);
AV_CH_LAYOUT_5POINT0 = (AV_CH_LAYOUT_SURROUND or AV_CH_SIDE_LEFT or AV_CH_SIDE_RIGHT);
AV_CH_LAYOUT_5POINT1 = (AV_CH_LAYOUT_5POINT0 or AV_CH_LOW_FREQUENCY);
AV_CH_LAYOUT_5POINT0_BACK = (AV_CH_LAYOUT_SURROUND or AV_CH_BACK_LEFT or
AV_CH_BACK_RIGHT);
AV_CH_LAYOUT_5POINT1_BACK = (AV_CH_LAYOUT_5POINT0_BACK or AV_CH_LOW_FREQUENCY);
AV_CH_LAYOUT_7POINT0 = (AV_CH_LAYOUT_5POINT0 or AV_CH_BACK_LEFT or AV_CH_BACK_RIGHT);
AV_CH_LAYOUT_7POINT1 = (AV_CH_LAYOUT_5POINT1 or AV_CH_BACK_LEFT or AV_CH_BACK_RIGHT);
AV_CH_LAYOUT_7POINT1_WIDE = (AV_CH_LAYOUT_5POINT1_BACK or
AV_CH_FRONT_LEFT_OF_CENTER or
AV_CH_FRONT_RIGHT_OF_CENTER);
AV_CH_LAYOUT_STEREO_DOWNMIX = (AV_CH_STEREO_LEFT or AV_CH_STEREO_RIGHT);
(**
* Return a channel layout id that matches name, 0 if no match.
*)
function av_get_channel_layout(name: {const} PAnsiChar): cint64;
cdecl; external av__util;
(**
* Return a description of a channel layout.
* If nb_channels is <= 0, it is guessed from the channel_layout.
*
* @param buf put here the string containing the channel layout
* @param buf_size size in bytes of the buffer
*)
procedure av_get_channel_layout_string(buf: PAnsiChar; buf_size: cint; nb_channels: cint; channel_layout: cint64);
cdecl; external av__util;
(**
* Return the number of channels in the channel layout.
*)
function av_get_channel_layout_nb_channels(channel_layout: cint64): cint;
cdecl; external av__util;
|
