swscale: implement >8bit scaling support.

This means that precision is retained when scaling between sample
formats with >8 bits per component (48bit RGB, 16bit grayscale,
9/10/16bit YUV).

7 files changed, 64 insertions, 64 deletions

diff --git a/tests/ref/lavfi/pixdesc b/tests/ref/lavfi/pixdesc
index de13e94cff..8695b1dea2 100644
--- a/tests/ref/lavfi/pixdesc
+++ b/tests/ref/lavfi/pixdesc
@@ -1,8 +1,8 @@
 abgr                037bf9df6a765520ad6d490066bf4b89
 argb                c442a8261c2265a07212ef0f72e35f5a
 bgr24               0d0cb38ab3fa0b2ec0865c14f78b217b
-bgr48be             4ba0ff7fc9e011ea264610ad1585bb1f
-bgr48le             d022bfdd6a07d5dcc693799322a386b4
+bgr48be             74dedaaacae8fd1ef46e05f78cf29d62
+bgr48le             0eb7d30801eac6058814bddd330b3c76
 bgr4_byte           50d23cc82d9dcef2fd12adb81fb9b806
 bgr555be            49f01b1f1f0c84fd9e776dd34cc3c280
 bgr555le            378d6ac4223651a1adcbf94a3d0d807b
@@ -18,8 +18,8 @@ monow               9251497f3b0634f1165d12d5a289d943
 nv12                e0af357888584d36eec5aa0f673793ef
 nv21                9a3297f3b34baa038b1f37cb202b512f
 rgb24               b41eba9651e1b5fe386289b506188105
-rgb48be             460b6de89b156290a12d3941db8bd731
-rgb48le             cd93cb34d15996987367dabda3a10128
+rgb48be             e3bc84c9af376fb6d0f0293cc7b713a6
+rgb48le             f51c0e71638a822458329abb2f4052c7
 rgb4_byte           c93ba89b74c504e7f5ae9d9ab1546c73
 rgb555be            912a62c5e53bfcbac2a0340e10973cf2
 rgb555le            a937a0fc764fb57dc1b3af87cba0273c
@@ -38,12 +38,12 @@ yuv420p16le         2d59c4f1d0314a5a957a7cfc4b6fabcc
 yuv420p9be          ce880fa07830e5297c22acf6e20555ce
 yuv420p9le          16543fda8f87d94a6cf857d2e8d4461a
 yuv422p             c9bba4529821d796a6ab09f6a5fd355a
-yuv422p16be         5499502e1c29534a158a1fe60e889f60
-yuv422p16le         e3d61fde6978591596bc36b914386623
+yuv422p16be         86ad3447f97969ce095afeef81fa9abf
+yuv422p16le         a53a9b451f4a81eeae33362c1bbd07f8
 yuv440p             5a064afe2b453bb52cdb3f176b1aa1cf
 yuv444p             0a98447b78fd476aa39686da6a74fa2e
-yuv444p16be         ea602a24b8e6969679265078bd8607b6
-yuv444p16le         1262a0dc57ee147967fc896d04206313
+yuv444p16be         95db370ae765dd3d10b7def14704ae73
+yuv444p16le         36b969179b5ad9d312a0d1e1cd6bc402
 yuva420p            a29884f3f3dfe1e00b961bc17bef3d47
 yuvj420p            32eec78ba51857b16ce9b813a49b7189
 yuvj422p            0dfa0ed434f73be51428758c69e082cb
diff --git a/tests/ref/lavfi/pixfmts_copy b/tests/ref/lavfi/pixfmts_copy
index de13e94cff..8695b1dea2 100644
--- a/tests/ref/lavfi/pixfmts_copy
+++ b/tests/ref/lavfi/pixfmts_copy
@@ -1,8 +1,8 @@
 abgr                037bf9df6a765520ad6d490066bf4b89
 argb                c442a8261c2265a07212ef0f72e35f5a
 bgr24               0d0cb38ab3fa0b2ec0865c14f78b217b
-bgr48be             4ba0ff7fc9e011ea264610ad1585bb1f
-bgr48le             d022bfdd6a07d5dcc693799322a386b4
+bgr48be             74dedaaacae8fd1ef46e05f78cf29d62
+bgr48le             0eb7d30801eac6058814bddd330b3c76
 bgr4_byte           50d23cc82d9dcef2fd12adb81fb9b806
 bgr555be            49f01b1f1f0c84fd9e776dd34cc3c280
 bgr555le            378d6ac4223651a1adcbf94a3d0d807b
@@ -18,8 +18,8 @@ monow               9251497f3b0634f1165d12d5a289d943
 nv12                e0af357888584d36eec5aa0f673793ef
 nv21                9a3297f3b34baa038b1f37cb202b512f
 rgb24               b41eba9651e1b5fe386289b506188105
-rgb48be             460b6de89b156290a12d3941db8bd731
-rgb48le             cd93cb34d15996987367dabda3a10128
+rgb48be             e3bc84c9af376fb6d0f0293cc7b713a6
+rgb48le             f51c0e71638a822458329abb2f4052c7
 rgb4_byte           c93ba89b74c504e7f5ae9d9ab1546c73
 rgb555be            912a62c5e53bfcbac2a0340e10973cf2
 rgb555le            a937a0fc764fb57dc1b3af87cba0273c
@@ -38,12 +38,12 @@ yuv420p16le         2d59c4f1d0314a5a957a7cfc4b6fabcc
 yuv420p9be          ce880fa07830e5297c22acf6e20555ce
 yuv420p9le          16543fda8f87d94a6cf857d2e8d4461a
 yuv422p             c9bba4529821d796a6ab09f6a5fd355a
-yuv422p16be         5499502e1c29534a158a1fe60e889f60
-yuv422p16le         e3d61fde6978591596bc36b914386623
+yuv422p16be         86ad3447f97969ce095afeef81fa9abf
+yuv422p16le         a53a9b451f4a81eeae33362c1bbd07f8
 yuv440p             5a064afe2b453bb52cdb3f176b1aa1cf
 yuv444p             0a98447b78fd476aa39686da6a74fa2e
-yuv444p16be         ea602a24b8e6969679265078bd8607b6
-yuv444p16le         1262a0dc57ee147967fc896d04206313
+yuv444p16be         95db370ae765dd3d10b7def14704ae73
+yuv444p16le         36b969179b5ad9d312a0d1e1cd6bc402
 yuva420p            a29884f3f3dfe1e00b961bc17bef3d47
 yuvj420p            32eec78ba51857b16ce9b813a49b7189
 yuvj422p            0dfa0ed434f73be51428758c69e082cb
diff --git a/tests/ref/lavfi/pixfmts_crop b/tests/ref/lavfi/pixfmts_crop
index af42cd3c4a..c7b59527fb 100644
--- a/tests/ref/lavfi/pixfmts_crop
+++ b/tests/ref/lavfi/pixfmts_crop
@@ -1,8 +1,8 @@
 abgr                cd761690872843d1b7ab0c695393c751
 argb                2ec6ef18769bcd651c2e8904d5a3ee67
 bgr24               3450fd00cf1493d1ded75544d82ba3ec
-bgr48be             90cb5d373a1123432d63c6a10c101afa
-bgr48le             9371f54ceda9010f1199e86f4930ac3f
+bgr48be             a9a7d177cef0914d3f1d266f00dff676
+bgr48le             b475d1b529ed80c728ddbacd22d35281
 bgr4_byte           2f6ac3cdd4676ab4e2982bdf0664945b
 bgr555be            d3a7c273604723adeb7e5f5dd1c4272b
 bgr555le            d22442fc13b464f9ba455b08df4e981f
@@ -14,8 +14,8 @@ gray                8c4850e66562a587a292dc728a65ea4a
 gray16be            daa5a6b98fb4a280c57c57bff1a2ab5a
 gray16le            84f5ea7259073edcb893113b42213c8e
 rgb24               3b90ed64b687d3dc186c6ef521dc71a8
-rgb48be             a808128041a1962deaa8620c7448feba
-rgb48le             ce92d02cc322608d5be377cb1940677b
+rgb48be             b8f9fd6aaa24d75275ee2f8b8a7b9e55
+rgb48le             3e52e831a040f086c3ae983241172cce
 rgb4_byte           6958029f73c6cdfed4f71020d816f027
 rgb555be            41a7d1836837bc90f2cae19a9c9df3b3
 rgb555le            eeb78f8ce6186fba55c941469e60ba67
@@ -29,12 +29,12 @@ yuv420p             bfea0188ddd4889787c403caae119cc7
 yuv420p16be         8365eff38b8c329aeb95fc605fa229bb
 yuv420p16le         5e8dd38d973d5854abe1ad4efad20cc1
 yuv422p             f2f930a91fe00d4252c4720b5ecd8961
-yuv422p16be         167e4338811a7d272925a4c6417d60da
-yuv422p16le         3359395d5875d581fa1e975013d30114
+yuv422p16be         6647fe1c381c148f8207c988c0e22bf0
+yuv422p16le         e1548c9dc51202db38a9625c8954203f
 yuv440p             2472417d980e395ad6843cbb8b633b29
 yuv444p             1f151980486848c96bc5585ced99003e
-yuv444p16be         d69280c2856865d2ea94bd5292aac1c6
-yuv444p16le         33f43e030bedf9723be4f63c3e9fc80e
+yuv444p16be         ac3b159f8c858fcdf475a8c024ee79b6
+yuv444p16le         9a6863bfc5faee206065c11dc994bf0c
 yuva420p            7536753dfbc7932560fb50c921369a0e
 yuvj420p            21f891093006d42d7683b0e1d773a657
 yuvj422p            9a43d474c407590ad8f213880586b45e
diff --git a/tests/ref/lavfi/pixfmts_hflip b/tests/ref/lavfi/pixfmts_hflip
index 3a3dbf0014..7f4342f35c 100644
--- a/tests/ref/lavfi/pixfmts_hflip
+++ b/tests/ref/lavfi/pixfmts_hflip
@@ -1,8 +1,8 @@
 abgr                49468c6c9ceee5d52b08b1270a909323
 argb                50ba9f16c6475530602f2983278b82d0
 bgr24               cc53d2011d097972db0d22756c3699e3
-bgr48be             11641cf0f4516a9aed98f7872720f801
-bgr48le             b5440734eed128554dd9f83b34ba582f
+bgr48be             90374bc92471f1bd4931d71ef8b73f50
+bgr48le             696f628d0dd32121e60a0d61ac47d6e6
 bgr4_byte           aac987e7d1a6a96477cfc0b48a4285de
 bgr555be            bc07265898440116772200390d70c092
 bgr555le            ccee08679bac84a1f960c6c9070c5538
@@ -14,8 +14,8 @@ gray                03efcb4ab52a24c0af0e03cfd26c9377
 gray16be            9bcbca979601ddc4869f846f08f3d1dd
 gray16le            c1b8965adcc7f847ee343149ff507073
 rgb24               754f1722fc738590cc407ac65749bfe8
-rgb48be             10743e1577dc3198dbbc7c0b3b8f429e
-rgb48le             dd945a44f39119221407bf7a04f1bc49
+rgb48be             2397b9d3c296ac15f8a2325a703f81c7
+rgb48le             527043c72546d8b4bb1ce2dea4b294c3
 rgb4_byte           c8a3f995fcf3e0919239ea2c413ddc29
 rgb555be            045ce8607d3910586f4d97481dda8632
 rgb555le            8778ee0cf58ce9ad1d99a1eca9f95e87
@@ -29,12 +29,12 @@ yuv420p             2d5c80f9ba2ddd85b2aeda3564cc7d64
 yuv420p16be         758b0c1e2113b15e7afde48da4e4d024
 yuv420p16le         480ccd951dcb806bc875d307e02e50a0
 yuv422p             6e728f4eb9eae287c224f396d84be6ea
-yuv422p16be         a05d43cd62b790087bd37083174557de
-yuv422p16le         6954abebcbc62d81068d58d0c62bdd5b
+yuv422p16be         9dbe0af0eb877987611cf04bfa577202
+yuv422p16le         2d8f37231110177cc5e1b61c8cb4b163
 yuv440p             a99e2b57ed601f39852715c9d675d0d3
 yuv444p             947e47f7bb5fdccc659d19b7df2b6fc3
-yuv444p16be         e5ef45bc3d2f5b0b2542d5151340c382
-yuv444p16le         70793e3d66d0c23a0cdedabe9c24c2a7
+yuv444p16be         debc96a7ec4fec0a412f9d8995bc48a2
+yuv444p16le         5b5e1348a631fc2206bb7ff851a52687
 yuva420p            d83ec0c01498189f179ec574918185f1
 yuvj420p            df3aaaec3bb157c3bde5f0365af30f4f
 yuvj422p            d113871528d510a192797af59df9c05c
diff --git a/tests/ref/lavfi/pixfmts_null b/tests/ref/lavfi/pixfmts_null
index de13e94cff..8695b1dea2 100644
--- a/tests/ref/lavfi/pixfmts_null
+++ b/tests/ref/lavfi/pixfmts_null
@@ -1,8 +1,8 @@
 abgr                037bf9df6a765520ad6d490066bf4b89
 argb                c442a8261c2265a07212ef0f72e35f5a
 bgr24               0d0cb38ab3fa0b2ec0865c14f78b217b
-bgr48be             4ba0ff7fc9e011ea264610ad1585bb1f
-bgr48le             d022bfdd6a07d5dcc693799322a386b4
+bgr48be             74dedaaacae8fd1ef46e05f78cf29d62
+bgr48le             0eb7d30801eac6058814bddd330b3c76
 bgr4_byte           50d23cc82d9dcef2fd12adb81fb9b806
 bgr555be            49f01b1f1f0c84fd9e776dd34cc3c280
 bgr555le            378d6ac4223651a1adcbf94a3d0d807b
@@ -18,8 +18,8 @@ monow               9251497f3b0634f1165d12d5a289d943
 nv12                e0af357888584d36eec5aa0f673793ef
 nv21                9a3297f3b34baa038b1f37cb202b512f
 rgb24               b41eba9651e1b5fe386289b506188105
-rgb48be             460b6de89b156290a12d3941db8bd731
-rgb48le             cd93cb34d15996987367dabda3a10128
+rgb48be             e3bc84c9af376fb6d0f0293cc7b713a6
+rgb48le             f51c0e71638a822458329abb2f4052c7
 rgb4_byte           c93ba89b74c504e7f5ae9d9ab1546c73
 rgb555be            912a62c5e53bfcbac2a0340e10973cf2
 rgb555le            a937a0fc764fb57dc1b3af87cba0273c
@@ -38,12 +38,12 @@ yuv420p16le         2d59c4f1d0314a5a957a7cfc4b6fabcc
 yuv420p9be          ce880fa07830e5297c22acf6e20555ce
 yuv420p9le          16543fda8f87d94a6cf857d2e8d4461a
 yuv422p             c9bba4529821d796a6ab09f6a5fd355a
-yuv422p16be         5499502e1c29534a158a1fe60e889f60
-yuv422p16le         e3d61fde6978591596bc36b914386623
+yuv422p16be         86ad3447f97969ce095afeef81fa9abf
+yuv422p16le         a53a9b451f4a81eeae33362c1bbd07f8
 yuv440p             5a064afe2b453bb52cdb3f176b1aa1cf
 yuv444p             0a98447b78fd476aa39686da6a74fa2e
-yuv444p16be         ea602a24b8e6969679265078bd8607b6
-yuv444p16le         1262a0dc57ee147967fc896d04206313
+yuv444p16be         95db370ae765dd3d10b7def14704ae73
+yuv444p16le         36b969179b5ad9d312a0d1e1cd6bc402
 yuva420p            a29884f3f3dfe1e00b961bc17bef3d47
 yuvj420p            32eec78ba51857b16ce9b813a49b7189
 yuvj422p            0dfa0ed434f73be51428758c69e082cb
diff --git a/tests/ref/lavfi/pixfmts_scale b/tests/ref/lavfi/pixfmts_scale
index 670efe15bb..de41952a21 100644
--- a/tests/ref/lavfi/pixfmts_scale
+++ b/tests/ref/lavfi/pixfmts_scale
@@ -1,8 +1,8 @@
 abgr                d894cb97f6c80eb21bdbe8a4eea62d86
 argb                54346f2b2eef10919e0f247241df3b24
 bgr24               570f8d6b51a838aed022ef67535f6bdc
-bgr48be             fcc0f2dbf45d325f84f816c74cbeeebe
-bgr48le             3f9c2b23eed3b8d196d1c14b38ce50f5
+bgr48be             07f7a0cc34feb3646434d47c0cec8cee
+bgr48le             9abd2c3a66088e6c9078232064eba61e
 bgr4_byte           ee1d35a7baf8e9016891929a2f565c0b
 bgr555be            de8901c1358834fddea060fcb3a67beb
 bgr555le            36b745067197f9ca8c1731cac51329c9
@@ -11,15 +11,15 @@ bgr565le            3a514a298c6161a071ddf9963c06509d
 bgr8                7f007fa6c153a16e808a9c51605a4016
 bgra                a5e7040f9a80cccd65e5acf2ca09ace5
 gray                d7786a7d9d99ac74230cc045cab5632c
-gray16be            af39ce3a497f6734b157c8b94544f537
-gray16le            7ac1b788bcc472010df7a97e762485e0
+gray16be            bba98532da29a31599df2feec3b08e3e
+gray16le            30267f127d5734c4767f3944f1729a33
 monob               88c4c050758e64d120f50c7eff694381
 monow               d31772ebaa877fc2a78565937f7f9673
 nv12                4676d59db43d657dc12841f6bc3ab452
 nv21                69c699510ff1fb777b118ebee1002f14
 rgb24               514692e28e8ff6860e415ce4fcf6eb8c
-rgb48be             1894cd30dabcd3180518e4d5f09f25e7
-rgb48le             1354e6e27ce3c1d4d4989ee56030c94b
+rgb48be             f18841c19fc6d9c817a3095f557b9bc5
+rgb48le             819e7b8acd8965ba57ba46198a5cc9bf
 rgb4_byte           d81ffd3add95842a618eec81024f0b5c
 rgb555be            4607309f9f217d51cbb53d13b84b4537
 rgb555le            a350ef1dc2c9688ed49e7ba018843795
@@ -31,19 +31,19 @@ uyvy422             314bd486277111a95d9369b944fa0400
 yuv410p             7df8f6d69b56a8dcb6c7ee908e5018b5
 yuv411p             1143e7c5cc28fe0922b051b17733bc4c
 yuv420p             fdad2d8df8985e3d17e73c71f713cb14
-yuv420p10be         6d335e75b553da590135cf8bb999610c
-yuv420p10le         d510ddbabefd03ef39ec943fcb51b709
-yuv420p16be         29a0265764530070f5cd3251cc01f66a
-yuv420p16le         6f3a265b084a78baec229238d9f7945f
-yuv420p9be          ec4983b7a949c0472110a7a2c58e278a
-yuv420p9le          c136dce5913a722eee44ab72cff664b2
+yuv420p10be         8b5ad855229840a8fa87786cab83f856
+yuv420p10le         5264e87921d47b17411578d9c92672b1
+yuv420p16be         f6ef3ba90f238b467c7e72ade927083d
+yuv420p16le         faf6aab3b1c16e8afbe160686dd360e0
+yuv420p9be          c14bf746d161face61e1f39b491bf7ef
+yuv420p9le          59457f9a51768bf1d4342238d50a9be3
 yuv422p             918e37701ee7377d16a8a6c119c56a40
-yuv422p16be         ef3e865fc1d0c68977c735323c50af6e
-yuv422p16le         428a9b96214c09cb5a983ce36d6961ff
+yuv422p16be         837945d3a771366a5a72a4ed095a4f53
+yuv422p16le         b8292ae9b52eb7afc3d8b93e8fd895b4
 yuv440p             461503fdb9b90451020aa3b25ddf041c
 yuv444p             81b2eba962d12e8d64f003ac56f6faf2
-yuv444p16be         99a3738c70c8fbdc5a0e4ad4bf50648d
-yuv444p16le         385d0cc5240d62da0871915be5d86f0a
+yuv444p16be         cc7460f76477aa4b4c33442f67c06a89
+yuv444p16le         9a5ed60d68c0a4a5155f9d376174cdf7
 yuva420p            8673a9131fb47de69788863f93a50eb7
 yuvj420p            30427bd6caf5bda93a173dbebe759e09
 yuvj422p            fc8288f64fd149573f73cf8da05d8e6d
diff --git a/tests/ref/lavfi/pixfmts_vflip b/tests/ref/lavfi/pixfmts_vflip
index 0383ad9c08..89502d1745 100644
--- a/tests/ref/lavfi/pixfmts_vflip
+++ b/tests/ref/lavfi/pixfmts_vflip
@@ -1,8 +1,8 @@
 abgr                25e72e9dbd01ab00727c976d577f7be5
 argb                19869bf1a5ac0b6af4d8bbe2c104533c
 bgr24               89108a4ba00201f79b75b9305c42352d
-bgr48be             ed82382da09b64a8e04728fcf76e6814
-bgr48le             0f1f135608c2ff24d26d03e939fc2112
+bgr48be             908b4edb525fd154a95a3744c4ab5420
+bgr48le             796c2072d6fa13a091f5c5b175417ed5
 bgr4_byte           407fcf564ed764c38e1d748f700ab921
 bgr555be            f739d2519f7e9d494359bf67a3821537
 bgr555le            bd7b3ec4d684dfad075d89a606cb8b74
@@ -18,8 +18,8 @@ monow               ff9869d067ecb94eb9d90c9750c31fea
 nv12                046f00f598ce14d9854a3534a5c99114
 nv21                01ea369dd2d0d3ed7451dc5c8d61497f
 rgb24               eaefabc168d0b14576bab45bc1e56e1e
-rgb48be             4e0c384163ebab06a08e74637beb02bc
-rgb48le             a77bfeefcd96750cf0e1917a2e2bf1e7
+rgb48be             8e347deca2902e7dc1ece261322577d8
+rgb48le             2034e485f946e4064b5fb9be09865e55
 rgb4_byte           8c6ff02df0b06dd2d574836c3741b2a2
 rgb555be            40dc33cfb5cf56aac1c5a290ac486c36
 rgb555le            4f8eaad29a17e0f8e9d8ab743e76b999
@@ -38,12 +38,12 @@ yuv420p16le         0f609e588e5a258644ef85170d70e030
 yuv420p9be          be40ec975fb2873891643cbbbddbc3b0
 yuv420p9le          7e606310d3f5ff12badf911e8f333471
 yuv422p             d7f5cb44d9b0210d66d6a8762640ab34
-yuv422p16be         9bd8f8c961822b586fa4cf992be54acc
-yuv422p16le         9c4a1239605c7952b736ac3130163f14
+yuv422p16be         8cdfbddf2dd4c44c3efef4ee00170eba
+yuv422p16le         a2f421f6a1af950544081c1797de01ae
 yuv440p             876385e96165acf51271b20e5d85a416
 yuv444p             9c3c667d1613b72d15bc6d851c5eb8f7
-yuv444p16be         0f4afa4a4aacf4bb6b87641abde71ea9
-yuv444p16le         8f31557bc52adfe00ae8b40a9b8c23f8
+yuv444p16be         b092690d22f0b26360fbf5cfd739be17
+yuv444p16le         18768b4ddca92d06f9713fef467276a9
 yuva420p            c705d1cf061d8c6580ac690b55f92276
 yuvj420p            41fd02b204da0ab62452cd14b595e2e4
 yuvj422p            7f6ca9bc1812cde02036d7d29a7cce43