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Diffstat (limited to 'src/lib/ffmpeg7/libavcodec')
| -rw-r--r-- | src/lib/ffmpeg7/libavcodec/audioconvert.pas | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/src/lib/ffmpeg7/libavcodec/audioconvert.pas b/src/lib/ffmpeg7/libavcodec/audioconvert.pas new file mode 100644 index 00000000..f0c33e06 --- /dev/null +++ b/src/lib/ffmpeg7/libavcodec/audioconvert.pas @@ -0,0 +1,100 @@ +(* + * 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; |