The Tor Browser: content/media/fmp4/demuxer/channel

content/media/fmp4/demuxer/channel_layout.h@44a2da4a2ab2 (annotated)

content/media/fmp4/demuxer/channel_layout.h

Fri, 16 Jan 2015 04:50:19 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Fri, 16 Jan 2015 04:50:19 +0100
branch: TOR_BUG_9701
changeset 13: 44a2da4a2ab2
permissions: -rw-r--r--

Replace accessor implementation with direct member state manipulation, by
request https://trac.torproject.org/projects/tor/ticket/9701#comment:32

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 #ifndef MEDIA_BASE_CHANNEL_LAYOUT_H_
 #define MEDIA_BASE_CHANNEL_LAYOUT_H_
 namespace mp4_demuxer {
 // Enumerates the various representations of the ordering of audio channels.
 // Logged to UMA, so never reuse a value, always add new/greater ones!
 enum ChannelLayout {
   CHANNEL_LAYOUT_NONE = 0,
   CHANNEL_LAYOUT_UNSUPPORTED = 1,
   // Front C
   CHANNEL_LAYOUT_MONO = 2,
   // Front L, Front R
   CHANNEL_LAYOUT_STEREO = 3,
   // Front L, Front R, Back C
   CHANNEL_LAYOUT_2_1 = 4,
   // Front L, Front R, Front C
   CHANNEL_LAYOUT_SURROUND = 5,
   // Front L, Front R, Front C, Back C
   CHANNEL_LAYOUT_4_0 = 6,
   // Front L, Front R, Side L, Side R
   CHANNEL_LAYOUT_2_2 = 7,
   // Front L, Front R, Back L, Back R
   CHANNEL_LAYOUT_QUAD = 8,
   // Front L, Front R, Front C, Side L, Side R
   CHANNEL_LAYOUT_5_0 = 9,
   // Front L, Front R, Front C, Side L, Side R, LFE
   CHANNEL_LAYOUT_5_1 = 10,
   // Front L, Front R, Front C, Back L, Back R
   CHANNEL_LAYOUT_5_0_BACK = 11,
   // Front L, Front R, Front C, Back L, Back R, LFE
   CHANNEL_LAYOUT_5_1_BACK = 12,
   // Front L, Front R, Front C, Side L, Side R, Back L, Back R
   CHANNEL_LAYOUT_7_0 = 13,
   // Front L, Front R, Front C, Side L, Side R, LFE, Back L, Back R
   CHANNEL_LAYOUT_7_1 = 14,
   // Front L, Front R, Front C, Side L, Side R, LFE, Front LofC, Front RofC
   CHANNEL_LAYOUT_7_1_WIDE = 15,
   // Stereo L, Stereo R
   CHANNEL_LAYOUT_STEREO_DOWNMIX = 16,
   // Stereo L, Stereo R, LFE
   CHANNEL_LAYOUT_2POINT1 = 17,
   // Stereo L, Stereo R, Front C, LFE
   CHANNEL_LAYOUT_3_1 = 18,
   // Stereo L, Stereo R, Front C, Rear C, LFE
   CHANNEL_LAYOUT_4_1 = 19,
   // Stereo L, Stereo R, Front C, Side L, Side R, Back C
   CHANNEL_LAYOUT_6_0 = 20,
   // Stereo L, Stereo R, Side L, Side R, Front LofC, Front RofC
   CHANNEL_LAYOUT_6_0_FRONT = 21,
   // Stereo L, Stereo R, Side L, Side R, Front C, Rear C.
   CHANNEL_LAYOUT_HEXAGONAL = 22,
   // Stereo L, Stereo R, Side L, Side R, Front C, Rear Center, LFE
   CHANNEL_LAYOUT_6_1 = 23,
   // Stereo L, Stereo R, Back L, Back R, Front C, Rear Center, LFE
   CHANNEL_LAYOUT_6_1_BACK = 24,
   // Stereo L, Stereo R, Side L, Side R, Front LofC, Front RofC, LFE
   CHANNEL_LAYOUT_6_1_FRONT = 25,
   // Front L, Front R, Front C, Side L, Side R, Front LofC, Front RofC
   CHANNEL_LAYOUT_7_0_FRONT = 26,
   // Front L, Front R, Front C, Back L, Back R, LFE, Front LofC, Front RofC
   CHANNEL_LAYOUT_7_1_WIDE_BACK = 27,
   // Front L, Front R, Front C, Side L, Side R, Rear C, Back L, Back R.
   CHANNEL_LAYOUT_OCTAGONAL = 28,
   // Channels are not explicitly mapped to speakers.
   CHANNEL_LAYOUT_DISCRETE = 29,
   // Total number of layouts.
   CHANNEL_LAYOUT_MAX  // Must always be last!
 };
 enum Channels {
   LEFT = 0,
   RIGHT,
   CENTER,
   LFE,
   BACK_LEFT,
   BACK_RIGHT,
   LEFT_OF_CENTER,
   RIGHT_OF_CENTER,
   BACK_CENTER,
   SIDE_LEFT,
   SIDE_RIGHT,
   CHANNELS_MAX
 };
 // Returns the expected channel position in an interleaved stream.  Values of -1
 // mean the channel at that index is not used for that layout.  Values range
 // from 0 to CHANNELS_MAX - 1.
 int ChannelOrder(ChannelLayout layout, Channels channel);
 // Returns the number of channels in a given ChannelLayout.
 int ChannelLayoutToChannelCount(ChannelLayout layout);
 // Given the number of channels, return the best layout,
 // or return CHANNEL_LAYOUT_UNSUPPORTED if there is no good match.
 ChannelLayout GuessChannelLayout(int channels);
 }  // namespace mp4_demuxer
 #endif  // MEDIA_BASE_CHANNEL_LAYOUT_H_

The Tor Browser / annotate

content/media/fmp4/demuxer/channel_layout.h@44a2da4a2ab2 (annotated)

content/media/fmp4/demuxer/channel_layout.h