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dshow: fix return code when opening device 

Successfully opening a device altered the ret variable, making the function
not cleanup properly and return an incorrect value for errors that happened
afterwards.

Reviewed-by: Stefano Sabatini <stefasab@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Ramiro Polla 2012-12-06 02:32:47 -02:00 committed by Michael Niedermayer
parent 129d737150
commit f2c49da9ac
1 changed files with 8 additions and 10 deletions
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18
libavdevice/dshow.c
View File

@ -929,20 +929,18 @@ static int dshow_read_header(AVFormatContext *avctx)
}
if (ctx->device_name[VideoDevice]) {
ret = dshow_open_device(avctx, devenum, VideoDevice);
if (ret < 0)
goto error;
ret = dshow_add_device(avctx, VideoDevice);
if (ret < 0)
if ((r = dshow_open_device(avctx, devenum, VideoDevice)) < 0 ||
(r = dshow_add_device(avctx, VideoDevice)) < 0) {
ret = r;
goto error;
}
}
if (ctx->device_name[AudioDevice]) {
ret = dshow_open_device(avctx, devenum, AudioDevice);
if (ret < 0)
goto error;
ret = dshow_add_device(avctx, AudioDevice);
if (ret < 0)
if ((r = dshow_open_device(avctx, devenum, AudioDevice)) < 0 ||
(r = dshow_add_device(avctx, AudioDevice)) < 0) {
ret = r;
goto error;
}
}
ctx->mutex = CreateMutex(NULL, 0, NULL);