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| author | Andreas Rheinhardt <andreas.rheinhardt@outlook.com> | 2021-02-09 18:25:13 +0100 |
|---|---|---|
| committer | Andreas Rheinhardt <andreas.rheinhardt@outlook.com> | 2022-01-04 13:16:49 +0100 |
| commit | d7a75d21635eab4f4a1efea22945933059c2e36f (patch) | |
| tree | 936c16681a38f85298f1b45201ac79686ecb14d4 /libavcodec/ac3tab.c | |
| parent | 3d53cefb49289e5e27b652e13623017b05ace452 (diff) | |
| download | ffmpeg-d7a75d21635eab4f4a1efea22945933059c2e36f.tar.gz | |
avcodec/ac3tab: Unavpriv ac3_channel_layout_tab
It is small (16 B) and therefore the overhead of exporting it more
than outweighs the size savings from not having duplicated symbols:
When the symbol is no longer avpriv, one saves twice the size of
the string containing the symbols name (2x30 byte), two entries
in .dynsym (24 bytes each on x64), one entry in the importing libraries
.got and .rela.dyn (8 + 24 bytes on x64) and two entries for the
symbol version (2 bytes each) and one hash value in the exporting
library (4 bytes).
(The exact numbers are of course different for other platforms
(e.g. when using dlls), but given that the strings saved alone
more than outweigh the array size it can be presumed that this
is beneficial for all platforms.)
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Diffstat (limited to 'libavcodec/ac3tab.c')
| -rw-r--r-- | libavcodec/ac3tab.c | 14 |
1 files changed, 0 insertions, 14 deletions
diff --git a/libavcodec/ac3tab.c b/libavcodec/ac3tab.c index 5c5ea7e27e..766e293a1d 100644 --- a/libavcodec/ac3tab.c +++ b/libavcodec/ac3tab.c @@ -83,20 +83,6 @@ const uint8_t ff_ac3_channels_tab[8] = { }; /** - * Map audio coding mode (acmod) to channel layout mask. - */ -const uint16_t avpriv_ac3_channel_layout_tab[8] = { - AV_CH_LAYOUT_STEREO, - AV_CH_LAYOUT_MONO, - AV_CH_LAYOUT_STEREO, - AV_CH_LAYOUT_SURROUND, - AV_CH_LAYOUT_2_1, - AV_CH_LAYOUT_4POINT0, - AV_CH_LAYOUT_2_2, - AV_CH_LAYOUT_5POINT0 -}; - -/** * Table to remap channels from AC-3 order to SMPTE order. * [channel_mode][lfe][ch] */ |