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| author | Mauro Carvalho Chehab <mchehab@redhat.com> | 2009-09-16 08:49:04 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2009-09-16 08:49:04 -0300 |
| commit | 85d13c8ef6cb0f70323a77515b59f5a4d2444d3f (patch) | |
| tree | 19666bcda7adefb3b1186f2db269d98fac2aa740 /v4l2-apps/libv4l2util/v4l2_driver.c | |
| parent | eb80450edef873c9b5d0a839659da0a642e7716a (diff) | |
| parent | 7178a759bcb68c7e95477ff7fbfcdfb1631168c5 (diff) | |
| download | mediapointer-dvb-s2-85d13c8ef6cb0f70323a77515b59f5a4d2444d3f.tar.gz mediapointer-dvb-s2-85d13c8ef6cb0f70323a77515b59f5a4d2444d3f.tar.bz2 | |
merge: http://linuxtv.org/hg/~pb/v4l-dvb/
From: Mauro Carvalho Chehab <mchehab@redhat.com>
Priority: normal
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'v4l2-apps/libv4l2util/v4l2_driver.c')
| -rw-r--r-- | v4l2-apps/libv4l2util/v4l2_driver.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/v4l2-apps/libv4l2util/v4l2_driver.c b/v4l2-apps/libv4l2util/v4l2_driver.c index 94f826968..919119b6a 100644 --- a/v4l2-apps/libv4l2util/v4l2_driver.c +++ b/v4l2-apps/libv4l2util/v4l2_driver.c @@ -646,6 +646,9 @@ int v4l2_mmap_bufs(struct v4l2_driver *drv, unsigned int num_buffers) return 0; } +/* Returns <0, if error, 0 if nothing to read and <size>, if something + read + */ int v4l2_rcvbuf(struct v4l2_driver *drv, v4l2_recebe_buffer *rec_buf) { int ret; @@ -668,7 +671,7 @@ int v4l2_rcvbuf(struct v4l2_driver *drv, v4l2_recebe_buffer *rec_buf) default: perror ("dqbuf"); - return errno; + return -errno; } } prt_buf_info("DQBUF",&buf); @@ -677,19 +680,18 @@ int v4l2_rcvbuf(struct v4l2_driver *drv, v4l2_recebe_buffer *rec_buf) ret = rec_buf (&buf,&drv->bufs[buf.index]); - if (ret) { + if (ret<0) { v4l2_free_bufs(drv); return ret; } if (-1 == xioctl (drv->fd, VIDIOC_QBUF, &buf)) { perror ("qbuf"); - return errno; + return -errno; } - return 0; + return ret; } - int v4l2_start_streaming(struct v4l2_driver *drv) { uint32_t i; |