#2229: sws_scale overwrites out[0][-1] on ppc
-------------------------------------+-------------------------------------
Reporter: cehoyos | Owner:
Type: defect | Status: new
Priority: important | Component: swscale
Version: git-master | Resolution:
Keywords: ppc | Blocked By:
regression | Reproduced by developer: 0
Blocking: |
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Comment (by cehoyos):
Using attached patch, I get the following output:
{{{
$ ffmpeg -i tests/lena.pnm -pix_fmt rgba -f null -
ffmpeg version N-49673-gb5884db Copyright (c) 2000-2013 the FFmpeg
developers
built on Feb 7 2013 13:35:12 with gcc 4.2.1 (GCC) (Apple Inc. build
5577)
configuration: --cc=gcc-4.2 --enable-memalign-hack
libavutil 52. 17.101 / 52. 17.101
libavcodec 54. 91.101 / 54. 91.101
libavformat 54. 61.104 / 54. 61.104
libavdevice 54. 3.103 / 54. 3.103
libavfilter 3. 35.101 / 3. 35.101
libswscale 2. 2.100 / 2. 2.100
libswresample 0. 17.102 / 0. 17.102
Input #0, image2, from 'tests/lena.pnm':
Duration: 00:00:00.04, start: 0.000000, bitrate: N/A
Stream #0:0: Video: ppm, rgb24, 256x256, 25 tbr, 25 tbn, 25 tbc
Output #0, null, to 'pipe:':
Metadata:
encoder : Lavf54.61.104
Stream #0:0: Video: rawvideo (RGBA / 0x41424752), rgba, 256x256,
q=2-31, 200 kb/s, 90k tbn, 25 tbc
Stream mapping:
Stream #0:0 -> #0:0 (ppm -> rawvideo)
Press [q] to stop, [?] for help
sws_scale() begin - dst: 0x194c010, dst[-1]: 16
sws_scale() end - dst: 0x194c010, dst[-1]: 255
[null @ 0x1009e10] Encoder did not produce proper pts, making some up.
frame= 1 fps=0.0 q=0.0 Lsize=N/A time=00:00:00.04 bitrate=N/A
video:0kB audio:0kB subtitle:0 global headers:0kB muxing overhead
-134.375000%
ffmpeg(33692) malloc: *** error for object 0x194c011: Non-aligned pointer
being freed
*** set a breakpoint in malloc_error_break to debug
}}}
--
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2229#comment:7>
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