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submodule
ffmpeg
Commits
44c9f374
Commit
44c9f374
authored
Oct 12, 2016
by
Anton Khirnov
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examples/qsvdec: convert to the new decoding API
parent
1dd2b6c9
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1 changed file
with
25 additions
and
23 deletions
+25
-23
qsvdec.c
doc/examples/qsvdec.c
+25
-23
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doc/examples/qsvdec.c
View file @
44c9f374
...
...
@@ -92,41 +92,43 @@ static int decode_packet(DecodeContext *decode, AVCodecContext *decoder_ctx,
AVPacket
*
pkt
,
AVIOContext
*
output_ctx
)
{
int
ret
=
0
;
int
got_frame
=
1
;
while
(
pkt
->
size
>
0
||
(
!
pkt
->
data
&&
got_frame
))
{
ret
=
avcodec_decode_video2
(
decoder_ctx
,
frame
,
&
got_frame
,
pkt
);
if
(
ret
<
0
)
{
ret
=
avcodec_send_packet
(
decoder_ctx
,
pkt
);
if
(
ret
<
0
)
{
fprintf
(
stderr
,
"Error during decoding
\n
"
);
return
ret
;
}
while
(
ret
>=
0
)
{
int
i
,
j
;
ret
=
avcodec_receive_frame
(
decoder_ctx
,
frame
);
if
(
ret
==
AVERROR
(
EAGAIN
)
||
ret
==
AVERROR_EOF
)
break
;
else
if
(
ret
<
0
)
{
fprintf
(
stderr
,
"Error during decoding
\n
"
);
return
ret
;
}
pkt
->
data
+=
ret
;
pkt
->
size
-=
ret
;
/* A real program would do something useful with the decoded frame here.
* We just retrieve the raw data and write it to a file, which is rather
* useless but pedagogic. */
if
(
got_frame
)
{
int
i
,
j
;
ret
=
av_hwframe_transfer_data
(
sw_frame
,
frame
,
0
);
if
(
ret
<
0
)
{
fprintf
(
stderr
,
"Error transferring the data to system memory
\n
"
);
goto
fail
;
}
ret
=
av_hwframe_transfer_data
(
sw_frame
,
frame
,
0
);
if
(
ret
<
0
)
{
fprintf
(
stderr
,
"Error transferring the data to system memory
\n
"
);
goto
fail
;
}
for
(
i
=
0
;
i
<
FF_ARRAY_ELEMS
(
sw_frame
->
data
)
&&
sw_frame
->
data
[
i
];
i
++
)
for
(
j
=
0
;
j
<
(
sw_frame
->
height
>>
(
i
>
0
));
j
++
)
avio_write
(
output_ctx
,
sw_frame
->
data
[
i
]
+
j
*
sw_frame
->
linesize
[
i
],
sw_frame
->
width
);
for
(
i
=
0
;
i
<
FF_ARRAY_ELEMS
(
sw_frame
->
data
)
&&
sw_frame
->
data
[
i
];
i
++
)
for
(
j
=
0
;
j
<
(
sw_frame
->
height
>>
(
i
>
0
));
j
++
)
avio_write
(
output_ctx
,
sw_frame
->
data
[
i
]
+
j
*
sw_frame
->
linesize
[
i
],
sw_frame
->
width
);
fail:
av_frame_unref
(
sw_frame
);
av_frame_unref
(
frame
);
av_frame_unref
(
sw_frame
);
av_frame_unref
(
frame
);
if
(
ret
<
0
)
return
ret
;
}
if
(
ret
<
0
)
return
ret
;
}
return
0
;
...
...
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