[Libav-user] Reference app with ffmpeg n1.2 libs that works on IOS ?
Lars Hammarstrand
lars.hammarstrand at gmail.com
Tue Apr 2 20:38:18 CEST 2013
2013/4/2 Carl Eugen Hoyos <cehoyos at ag.or.at>
> Lars Hammarstrand <lars.hammarstrand at ...> writes:
>
> > (gdb) disass $pc-32,$pc+32
>
> Please add the register dump, some developers can
> see the problem if it is present.
>
>
Complete trace:
$ *uname -a*
Darwin Lars-iPhone-4 11.0.0 Darwin Kernel Version 11.0.0: Sun Apr 8
21:51:26 PDT 2012; root:xnu-1878.11.10~1/RELEASE_ARM_S5L8930X iPhone3,1 arm
N90AP Darwin
$ *gdb ffmpeg*
GNU gdb 6.3.50-20050815 (Apple version gdb-1821) (Fri Jun 29 08:41:41 UTC
2012)
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain
conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for details.
This GDB was configured as "arm-apple-darwin"...Reading symbols for shared
libraries . done
(gdb) *r ffmpeg -i
http://techslides.com/demos/sample-videos/small.mp4-acodec copy
-vcodec copy output.mp4
*
Starting program: /ffmpeg-n1.2/ffmpeg ffmpeg -i
http://techslides.com/demos/sample-videos/small.mp4 -acodec copy -vcodec
copy output.mp4
Reading symbols for shared libraries ......................... done
Program received signal EXC_BAD_INSTRUCTION, Illegal instruction/operand.
ff_pred8x8_128_dc_neon () at h264pred_neon.S:405
Line number 405 out of range; h264pred_neon.S has 359 lines.
(gdb) *bt*
#0 ff_pred8x8_128_dc_neon () at h264pred_neon.S:405
#1 0x003fc75a in hl_decode_mb_simple_8 (h=0x0) at h264_mb_template.c:161
#2 0x003fdad8 in ff_h264_hl_decode_mb (h=<value temporarily unavailable,
due to optimizations>) at /ffmpeg-n1.2/libavcodec/h264.c:2415
#3 0x00401da4 in decode_slice (avctx=<value temporarily unavailable, due
to optimizations>, arg=<value temporarily unavailable, due to
optimizations>) at /ffmpeg-n1.2/libavcodec/h264.c:4266
#4 0x00402380 in execute_decode_slices () at
/ffmpeg-n1.2/libavcodec/h264.c:4355
#5 0x00402dec in decode_nal_units (h=0xf00000, buf=0xd25484 "",
buf_size=4207149, parse_extradata=0) at /ffmpeg-n1.2/libavcodec/h264.c:4699
#6 0x004033d6 in decode_frame (avctx=0x13b5a00, data=0x0,
got_frame=0x2fdfef84, avpkt=<value temporarily unavailable, due to
optimizations>) at /ffmpeg-n1.2/libavcodec/h264.c:4811
#7 0x003247ce in avcodec_decode_video2 (avctx=0x13b5a00, picture=0xe4bb40,
got_picture_ptr=0x10, avpkt=0x2fdfef20) at
/ffmpeg-n1.2/libavcodec/utils.c:1690
#8 0x00067c16 in try_decode_frame (st=0xe4ad30, avpkt=<value temporarily
unavailable, due to optimizations>, options=0x0) at
/ffmpeg-n1.2/libavformat/utils.c:2514
#9 0x0006c468 in avformat_find_stream_info (ic=0xd18004,
options=0x2fe25a14) at /ffmpeg-n1.2/libavformat/utils.c:2946
#10 0x00004448 in open_input_file (o=0x2fdff36c, filename=<value
temporarily unavailable, due to optimizations>) at
/ffmpeg-n1.2/ffmpeg_opt.c:786
#11 0x00003de8 in open_files (l=0x0, inout=0x0, open_file=0x5f5944
<groups>) at /ffmpeg-n1.2/ffmpeg_opt.c:2307
#12 0x00004058 in ffmpeg_parse_options (argc=<value temporarily
unavailable, due to optimizations>, argv=<value temporarily unavailable,
due to optimizations>) at /ffmpeg-n1.2/ffmpeg_opt.c:2344
#13 0x00010c30 in main (argc=<value temporarily unavailable, due to
optimizations>, argv=<value temporarily unavailable, due to optimizations>)
at /ffmpeg-n1.2/ffmpeg.c:3317
Current language: auto; currently asm
(gdb) *disass $pc-32,$pc+32*
Dump of assembler code for function ff_pred8x8_top_dc_neon:
0x00398b74 <ff_pred8x8_top_dc_neon+0>: andeq lr, r1, #163840 ; 0x28000
0x00398b78 <ff_pred8x8_top_dc_neon+4>: ldreq pc, [pc, -r2, lsr #18]
0x00398b7c <ff_pred8x8_top_dc_neon+8>: addeq pc, r0, #704 ; 0x2c0
0x00398b80 <ff_pred8x8_top_dc_neon+12>: bleq 0x7d47c8 <noise_table+2408>
0x00398b84 <ff_pred8x8_top_dc_neon+16>: ldmdaeq r0, {r1, r2, r3, r7, r8,
r9, r10, r11, sp, lr, pc}^
0x00398b88 <ff_pred8x8_top_dc_neon+20>: stcne 15, cr15, [r0], {179}
0x00398b8c <ff_pred8x8_top_dc_neon+24>: stceq 15, cr15, [r0], {177}
0x00398b90 <ff_pred8x8_top_dc_neon+28>: strheq pc, [r1], r10
0x00398b94 <ff_pred8x8_top_dc_neon+32>: svclt 0x0000e04a
End of assembler dump.
(gdb) *info all-registers*
r0 0xdd5990 14506384
r1 0x130 304
r2 0x398b6c 3771244
r3 0x4b804 309252
r4 0xf00000 15728640
r5 0xf00fc4 15732676
r6 0x0 0
r7 0x2fdfecf4 803204340
r8 0xde3990 14563728
r9 0x4b824 309284
r10 0xfa8610 16418320
r11 0x0 0
r12 0x0 0
sp 0x2fdfec28 803204136
lr 0x3fc75b 4179803
pc 0x398b6c 3771244
cpsr {
0x60000010,
n = 0x0,
z = 0x1,
c = 0x1,
v = 0x0,
q = 0x0,
j = 0x0,
ge = 0x0,
e = 0x0,
a = 0x0,
i = 0x0,
f = 0x0,
t = 0x0,
mode = 0x10
} {
0x60000010,
n = 0,
z = 1,
c = 1,
v = 0,
q = 0,
j = 0,
ge = 0,
e = 0,
a = 0,
i = 0,
f = 0,
t = 0,
mode = usr
}
s0 0 (raw 0x00000000)
s1 0 (raw 0x00000000)
s2 0 (raw 0x00000000)
s3 0 (raw 0x00000000)
s4 0 (raw 0x00000000)
s5 0 (raw 0x00000000)
s6 0 (raw 0x00000000)
s7 0 (raw 0x00000000)
s8 0 (raw 0x00000000)
s9 0 (raw 0x00000000)
s10 0 (raw 0x00000000)
s11 0 (raw 0x00000000)
s12 0 (raw 0x00000000)
s13 0 (raw 0x00000000)
s14 0 (raw 0x00000000)
s15 0 (raw 0x00000000)
s16 0 (raw 0x00000000)
s17 1.75 (raw 0x3fe00000)
s18 0 (raw 0x00000000)
s19 0 (raw 0x00000000)
s20 0 (raw 0x00000000)
s21 0 (raw 0x00000000)
s22 0 (raw 0x00000000)
s23 0 (raw 0x00000000)
s24 0 (raw 0x00000000)
s25 0 (raw 0x00000000)
s26 0 (raw 0x00000000)
s27 0 (raw 0x00000000)
s28 0 (raw 0x00000000)
s29 0 (raw 0x00000000)
s30 0 (raw 0x00000000)
s31 0 (raw 0x00000000)
fpscr {
0x63000090,
n = 0x0,
z = 0x1,
c = 0x1,
v = 0x0,
dn = 0x1,
fz = 0x1,
rmode = 0x0,
stride = 0x0,
len = 0x0,
ide = 0x0,
ixe = 0x0,
ufe = 0x0,
ofe = 0x0,
dze = 0x0,
ioe = 0x0,
idc = 0x1,
ixc = 0x1,
ufc = 0x0,
ofc = 0x0,
dzc = 0x0,
ioc = 0x0
} {
0x63000090,
n = 0,
z = 1,
c = 1,
v = 0,
dn = 1,
fz = 1,
rmode = 0,
stride = 0,
len = 0,
ide = 0,
ixe = 0,
ufe = 0,
ofe = 0,
dze = 0,
ioe = 0,
idc = 1,
ixc = 1,
ufc = 0,
ofc = 0,
dzc = 0,
ioc = 0
}
d16 1 (raw 0x3ff0000000000000)
d17 4503599627370497 (raw 0x4330000000000001)
d18 -1 (raw 0xbff0000000000000)
d19 2147483647 (raw 0x41dfffffffc00000)
d20 -1 (raw 0xbff0000000000000)
d21 1 (raw 0x3ff0000000000000)
d22 0.084170438349246979 (raw 0x3fb58c31a0000000)
d23 -0.10307344049215317 (raw 0xbfba630560000000)
d24 0 (raw 0x0000000000000000)
d25 0 (raw 0x0000000000000000)
d26 0 (raw 0x0000000000000000)
d27 0 (raw 0x0000000000000000)
d28 0 (raw 0x0000000000000000)
d29 0 (raw 0x0000000000000000)
d30 0 (raw 0x0000000000000000)
d31 0 (raw 0x0000000000000000)
d0 0 (raw 0x0000000000000000)
d1 0 (raw 0x0000000000000000)
d2 0 (raw 0x0000000000000000)
d3 0 (raw 0x0000000000000000)
d4 0 (raw 0x0000000000000000)
d5 0 (raw 0x0000000000000000)
d6 0 (raw 0x0000000000000000)
d7 0 (raw 0x0000000000000000)
d8 0.5 (raw 0x3fe0000000000000)
d9 0 (raw 0x0000000000000000)
d10 0 (raw 0x0000000000000000)
d11 0 (raw 0x0000000000000000)
d12 0 (raw 0x0000000000000000)
d13 0 (raw 0x0000000000000000)
d14 0 (raw 0x0000000000000000)
d15 0 (raw 0x0000000000000000)
q0 {
uint128 = 0,
v4_float = {0, 0, 0, 0},
v4_int32 = {0, 0, 0, 0},
v8_int16 = {0, 0, 0, 0, 0, 0, 0, 0},
v16_int8 = {0 <repeats 16 times>}
} (raw 0x00000000000000000000000000000000)
q1 {
uint128 = 0,
v4_float = {0, 0, 0, 0},
v4_int32 = {0, 0, 0, 0},
v8_int16 = {0, 0, 0, 0, 0, 0, 0, 0},
v16_int8 = {0 <repeats 16 times>}
} (raw 0x00000000000000000000000000000000)
q2 {
uint128 = 0,
v4_float = {0, 0, 0, 0},
v4_int32 = {0, 0, 0, 0},
v8_int16 = {0, 0, 0, 0, 0, 0, 0, 0},
v16_int8 = {0 <repeats 16 times>}
} (raw 0x00000000000000000000000000000000)
q3 {
uint128 = 0,
v4_float = {0, 0, 0, 0},
v4_int32 = {0, 0, 0, 0},
v8_int16 = {0, 0, 0, 0, 0, 0, 0, 0},
v16_int8 = {0 <repeats 16 times>}
} (raw 0x00000000000000000000000000000000)
q4 {
uint128 = 4602678819172646912,
v4_float = {0, 1.75, 0, 0},
v4_int32 = {0, 1071644672, 0, 0},
v8_int16 = {0, 0, 0, 16352, 0, 0, 0, 0},
v16_int8 = {0, 0, 0, 0, 0, 0, -32, 63, 0, 0, 0, 0, 0, 0, 0, 0}
} (raw 0x00000000000000003fe0000000000000)
q5 {
uint128 = 0,
v4_float = {0, 0, 0, 0},
v4_int32 = {0, 0, 0, 0},
v8_int16 = {0, 0, 0, 0, 0, 0, 0, 0},
v16_int8 = {0 <repeats 16 times>}
} (raw 0x00000000000000000000000000000000)
q6 {
uint128 = 0,
v4_float = {0, 0, 0, 0},
v4_int32 = {0, 0, 0, 0},
v8_int16 = {0, 0, 0, 0, 0, 0, 0, 0},
v16_int8 = {0 <repeats 16 times>}
} (raw 0x00000000000000000000000000000000)
q7 {
uint128 = 0,
v4_float = {0, 0, 0, 0},
v4_int32 = {0, 0, 0, 0},
v8_int16 = {0, 0, 0, 0, 0, 0, 0, 0},
v16_int8 = {0 <repeats 16 times>}
} (raw 0x00000000000000000000000000000000)
q8 {
uint128 = 0x43300000000000013ff0000000000000,
v4_float = {0, 1.875, 0, 176},
v4_int32 = {0, 1072693248, 1, 1127219200},
v8_int16 = {0, 0, 0, 16368, 1, 0, 0, 17200},
v16_int8 = {0, 0, 0, 0, 0, 0, -16, 63, 1, 0, 0, 0, 0, 0, 48, 67}
} (raw 0x43300000000000013ff0000000000000)
q9 {
uint128 = 0x41dfffffffc00000bff0000000000000,
v4_float = {0, -1.875, -nan(0x400000), 27.9999981},
v4_int32 = {0, -1074790400, -4194304, 1105199103},
v8_int16 = {0, 0, 0, -16400, 0, -64, -1, 16863},
v16_int8 = {0, 0, 0, 0, 0, 0, -16, -65, 0, 0, -64, -1, -1, -1, -33, 65}
} (raw 0x41dfffffffc00000bff0000000000000)
q10 {
uint128 = 0x3ff0000000000000bff0000000000000,
v4_float = {0, -1.875, 0, 1.875},
v4_int32 = {0, -1074790400, 0, 1072693248},
v8_int16 = {0, 0, 0, -16400, 0, 0, 0, 16368},
v16_int8 = {0, 0, 0, 0, 0, 0, -16, -65, 0, 0, 0, 0, 0, 0, -16, 63}
} (raw 0x3ff0000000000000bff0000000000000)
q11 {
uint128 = 0xbfba6305600000003fb58c31a0000000,
v4_float = {-1.08420217e-19, 1.4183408, 3.68934881e+19, -1.45614684},
v4_int32 = {-1610612736, 1068862513, 1610612736, -1078303995},
v8_int16 = {0, -24576, -29647, 16309, 0, 24576, 25349, -16454},
v16_int8 = {0, 0, 0, -96, 49, -116, -75, 63, 0, 0, 0, 96, 5, 99, -70, -65}
} (raw 0xbfba6305600000003fb58c31a0000000)
q12 {
uint128 = 0,
v4_float = {0, 0, 0, 0},
v4_int32 = {0, 0, 0, 0},
v8_int16 = {0, 0, 0, 0, 0, 0, 0, 0},
v16_int8 = {0 <repeats 16 times>}
} (raw 0x00000000000000000000000000000000)
q13 {
uint128 = 0,
v4_float = {0, 0, 0, 0},
v4_int32 = {0, 0, 0, 0},
v8_int16 = {0, 0, 0, 0, 0, 0, 0, 0},
v16_int8 = {0 <repeats 16 times>}
} (raw 0x00000000000000000000000000000000)
q14 {
uint128 = 0,
v4_float = {0, 0, 0, 0},
v4_int32 = {0, 0, 0, 0},
v8_int16 = {0, 0, 0, 0, 0, 0, 0, 0},
v16_int8 = {0 <repeats 16 times>}
} (raw 0x00000000000000000000000000000000)
q15 {
uint128 = 0,
v4_float = {0, 0, 0, 0},
v4_int32 = {0, 0, 0, 0},
v8_int16 = {0, 0, 0, 0, 0, 0, 0, 0},
v16_int8 = {0 <repeats 16 times>}
} (raw 0x00000000000000000000000000000000)
--
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