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avformat/mov_chan: make iso_channel_position table more compact

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Signed-off-by: Marton Balint <cus@passwd.hu>
This commit is contained in:
Marton Balint 2024-06-03 21:52:55 +02:00
parent e405afdd0a
commit d9a0a6a2b5
1 changed files with 43 additions and 117 deletions
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160
libavformat/mov_chan.c
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@ -607,125 +607,51 @@ out:
/* ISO/IEC 23001-8, table 8 */
static const enum AVChannel iso_channel_position[] = {
// 0: left front
AV_CHAN_FRONT_LEFT,
[0] = AV_CHAN_FRONT_LEFT, // left front
[1] = AV_CHAN_FRONT_RIGHT, // right front
[2] = AV_CHAN_FRONT_CENTER, // centre front
[3] = AV_CHAN_LOW_FREQUENCY, // low frequency enhancement
[4] = AV_CHAN_SIDE_LEFT, // left surround
[5] = AV_CHAN_SIDE_RIGHT, // right surround
[6] = AV_CHAN_FRONT_LEFT_OF_CENTER, // left front centre
[7] = AV_CHAN_FRONT_RIGHT_OF_CENTER, // right front centre
[8] = AV_CHAN_BACK_LEFT, // rear surround left
[9] = AV_CHAN_BACK_RIGHT, // rear surround right
[10] = AV_CHAN_BACK_CENTER, // rear centre
[11] = AV_CHAN_SURROUND_DIRECT_LEFT, // left surround direct
[12] = AV_CHAN_SURROUND_DIRECT_RIGHT, // right surround direct
[13] = AV_CHAN_SIDE_SURROUND_LEFT, // left side surround
[14] = AV_CHAN_SIDE_SURROUND_RIGHT, // right side surround
[15] = AV_CHAN_WIDE_LEFT, // left wide front
[16] = AV_CHAN_WIDE_RIGHT, // right wide front
[17] = AV_CHAN_TOP_FRONT_LEFT, // left front vertical height
[18] = AV_CHAN_TOP_FRONT_RIGHT, // right front vertical height
[19] = AV_CHAN_TOP_FRONT_CENTER, // centre front vertical height
[20] = AV_CHAN_TOP_BACK_LEFT, // left surround vertical height rear
[21] = AV_CHAN_TOP_BACK_RIGHT, // right surround vertical height rear
[22] = AV_CHAN_TOP_BACK_CENTER, // centre vertical height rear
[23] = AV_CHAN_TOP_SIDE_LEFT, // left vertical height side surround
[24] = AV_CHAN_TOP_SIDE_RIGHT, // right vertical height side surround
[25] = AV_CHAN_TOP_CENTER, // top centre surround
[26] = AV_CHAN_LOW_FREQUENCY_2, // low frequency enhancement 2
[27] = AV_CHAN_BOTTOM_FRONT_LEFT, // left front vertical bottom
[28] = AV_CHAN_BOTTOM_FRONT_RIGHT, // right front vertical bottom
[29] = AV_CHAN_BOTTOM_FRONT_CENTER, // centre front vertical bottom
[30] = AV_CHAN_TOP_SURROUND_LEFT, // left vertical height surround
[31] = AV_CHAN_TOP_SURROUND_RIGHT, // right vertical height surround
// 1: right front
AV_CHAN_FRONT_RIGHT,
[32] = AV_CHAN_NONE, // reserved
[33] = AV_CHAN_NONE, // reserved
[34] = AV_CHAN_NONE, // reserved
[35] = AV_CHAN_NONE, // reserved
// 2: centre front
AV_CHAN_FRONT_CENTER,
// 3: low frequence enhancement
AV_CHAN_LOW_FREQUENCY,
// 4: left surround
AV_CHAN_SIDE_LEFT,
// 5: right surround
AV_CHAN_SIDE_RIGHT,
// 6: left front centre
AV_CHAN_FRONT_LEFT_OF_CENTER,
// 7: right front centre
AV_CHAN_FRONT_RIGHT_OF_CENTER,
// 8: rear surround left
AV_CHAN_BACK_LEFT,
// 9: rear surround right
AV_CHAN_BACK_RIGHT,
// 10: rear centre
AV_CHAN_BACK_CENTER,
// 11: left surround direct
AV_CHAN_SURROUND_DIRECT_LEFT,
// 12: right surround direct
AV_CHAN_SURROUND_DIRECT_RIGHT,
// 13: left side surround
AV_CHAN_SIDE_SURROUND_LEFT,
// 14: right side surround
AV_CHAN_SIDE_SURROUND_RIGHT,
// 15: left wide front
AV_CHAN_WIDE_LEFT,
// 16: right wide front
AV_CHAN_WIDE_RIGHT,
// 17: left front vertical height
AV_CHAN_TOP_FRONT_LEFT,
// 18: right front vertical height
AV_CHAN_TOP_FRONT_RIGHT,
// 19: centre front vertical height
AV_CHAN_TOP_FRONT_CENTER,
// 20: left surround vertical height rear
AV_CHAN_TOP_BACK_LEFT,
// 21: right surround vertical height rear
AV_CHAN_TOP_BACK_RIGHT,
// 22: centre vertical height rear
AV_CHAN_TOP_BACK_CENTER,
// 23: left vertical height side surround
AV_CHAN_TOP_SIDE_LEFT,
// 24: right vertical height side surround
AV_CHAN_TOP_SIDE_RIGHT,
// 25: top centre surround
AV_CHAN_TOP_CENTER,
// 26: low frequency enhancement 2
AV_CHAN_LOW_FREQUENCY_2,
// 27: left front vertical bottom
AV_CHAN_BOTTOM_FRONT_LEFT,
// 28: right front vertical bottom
AV_CHAN_BOTTOM_FRONT_RIGHT,
// 29: centre front vertical bottom
AV_CHAN_BOTTOM_FRONT_CENTER,
// 30: left vertical height surround
AV_CHAN_TOP_SURROUND_LEFT,
// 31: right vertical height surround
AV_CHAN_TOP_SURROUND_RIGHT,
// 32, 33, 34, 35, reserved
AV_CHAN_NONE,
AV_CHAN_NONE,
AV_CHAN_NONE,
AV_CHAN_NONE,
// 36: low frequency enhancement 3
AV_CHAN_NONE,
// 37: left edge of screen
AV_CHAN_NONE,
// 38: right edge of screen
AV_CHAN_NONE,
// 39: half-way between centre of screen and left edge of screen
AV_CHAN_NONE,
// 40: half-way between centre of screen and right edge of screen
AV_CHAN_NONE,
// 41: left back surround
AV_CHAN_NONE,
// 42: right back surround
AV_CHAN_NONE,
[36] = AV_CHAN_NONE, // low frequency enhancement 3
[37] = AV_CHAN_NONE, // left edge of screen
[38] = AV_CHAN_NONE, // right edge of screen
[39] = AV_CHAN_NONE, // half-way between centre of screen and left edge of screen
[40] = AV_CHAN_NONE, // half-way between centre of screen and right edge of screen
[41] = AV_CHAN_NONE, // left back surround
[42] = AV_CHAN_NONE, // right back surround
// 43 - 125: reserved
// 126: explicit position