Vittorio Giovara
a6b1180e39
avcodec/pixlet: fix architecture-dependent code and values
...
The constants used in the decoder used floating point precision,
and this caused different values to be generated on different
architectures.
So, eradicate floating point numbers and use fixed point (32.32)
arithmetics everywhere, replacing constants with precomputed integer
values.
Signed-off-by: Vittorio Giovara <vittorio.giovara at gmail.com>
Signed-off-by: Paul B Mahol <onemda@gmail.com>
2017-03-07 14:04:01 +01:00
Paul B Mahol
0fe50e56e9
avcodec/pixlet: use av_clip_uintp2_c explicitly
...
Found-by: Clément Bœsch <u@pkh.me>
Signed-off-by: Paul B Mahol <onemda@gmail.com>
2017-01-19 13:32:21 +01:00
Paul B Mahol
a340987e37
avcodec/pixlet: use av_clip_uintp2()
...
Found-by: Clément Bœsch <u@pkh.me>
Signed-off-by: Paul B Mahol <onemda@gmail.com>
2017-01-19 13:19:10 +01:00
Paul B Mahol
be46eb7101
avcodec/pixlet: clip chroma before shifting
...
Fixes artifacts.
Signed-off-by: Paul B Mahol <onemda@gmail.com>
2017-01-19 12:49:41 +01:00
Paul B Mahol
25c4035529
avcodec/pixlet: simplify lowpass_prediction() function
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Signed-off-by: Paul B Mahol <onemda@gmail.com>
2016-12-24 16:42:00 +01:00
Paul B Mahol
6cedd20b97
avcodec/pixlet: make sure scaling factors are not zero
...
Signed-off-by: Paul B Mahol <onemda@gmail.com>
2016-12-24 10:31:43 +01:00
Paul B Mahol
ab31b46b89
avcodec/pixlet: avoid some overflows
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Signed-off-by: Paul B Mahol <onemda@gmail.com>
2016-12-24 10:26:27 +01:00
Paul B Mahol
43cd33be16
avcodec/pixlet: fix undefined behaviour in postprocess_chroma
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Signed-off-by: Paul B Mahol <onemda@gmail.com>
2016-12-24 10:22:39 +01:00
Paul B Mahol
51ed1a7dd4
avcodec/pixlet: check out of bounds pfx value
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Signed-off-by: Paul B Mahol <onemda@gmail.com>
2016-12-23 09:41:06 +01:00
James Almer
41de965e31
avcodec/pixlet: remove unnecessary double to float conversion
...
Signed-off-by: James Almer <jamrial@gmail.com>
2016-12-23 09:19:34 +01:00
Paul B Mahol
73651090ca
avcodec: add Apple Pixlet decoder
...
Signed-off-by: Paul B Mahol <onemda@gmail.com>
2016-12-22 22:47:06 +01:00
