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v4l2: Use av_strerror 

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
This commit is contained in:
Tristan Matthews 2014-11-05 15:09:40 -05:00 committed by Luca Barbato
parent e3e317e0c0
commit a1a259881f
1 changed files with 34 additions and 15 deletions
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49
libavdevice/v4l2.c
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@ -119,6 +119,7 @@ static int device_open(AVFormatContext *ctx)
int fd;
int res, err;
int flags = O_RDWR;
char errbuf[128];
if (ctx->flags & AVFMT_FLAG_NONBLOCK) {
flags |= O_NONBLOCK;
@ -126,19 +127,21 @@ static int device_open(AVFormatContext *ctx)
fd = avpriv_open(ctx->filename, flags);
if (fd < 0) {
err = errno;
err = AVERROR(errno);
av_strerror(err, errbuf, sizeof(errbuf));
av_log(ctx, AV_LOG_ERROR, "Cannot open video device %s : %s\n",
ctx->filename, strerror(err));
ctx->filename, errbuf);
return AVERROR(err);
return err;
}
res = ioctl(fd, VIDIOC_QUERYCAP, &cap);
if (res < 0) {
err = errno;
av_strerror(AVERROR(err), errbuf, sizeof(errbuf));
av_log(ctx, AV_LOG_ERROR, "ioctl(VIDIOC_QUERYCAP): %s\n",
strerror(err));
errbuf);
goto fail;
}
@ -401,7 +404,9 @@ static int mmap_init(AVFormatContext *ctx)
s->fd, buf.m.offset);
if (s->buf_start[i] == MAP_FAILED) {
av_log(ctx, AV_LOG_ERROR, "mmap: %s\n", strerror(errno));
char errbuf[128];
av_strerror(AVERROR(errno), errbuf, sizeof(errbuf));
av_log(ctx, AV_LOG_ERROR, "mmap: %s\n", errbuf);
return AVERROR(errno);
}
@ -423,6 +428,7 @@ static void mmap_release_buffer(void *opaque, uint8_t *data)
int res, fd;
struct buff_data *buf_descriptor = opaque;
struct video_data *s = buf_descriptor->s;
char errbuf[128];
buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
buf.memory = V4L2_MEMORY_MMAP;
@ -431,9 +437,11 @@ static void mmap_release_buffer(void *opaque, uint8_t *data)
av_free(buf_descriptor);
res = ioctl(fd, VIDIOC_QBUF, &buf);
if (res < 0)
if (res < 0) {
av_strerror(AVERROR(errno), errbuf, sizeof(errbuf));
av_log(NULL, AV_LOG_ERROR, "ioctl(VIDIOC_QBUF): %s\n",
strerror(errno));
errbuf);
}
avpriv_atomic_int_add_and_fetch(&s->buffers_queued, 1);
}
@ -457,13 +465,15 @@ static int mmap_read_frame(AVFormatContext *ctx, AVPacket *pkt)
/* FIXME: Some special treatment might be needed in case of loss of signal... */
while ((res = ioctl(s->fd, VIDIOC_DQBUF, &buf)) < 0 && (errno == EINTR));
if (res < 0) {
char errbuf[128];
if (errno == EAGAIN) {
pkt->size = 0;
return AVERROR(EAGAIN);
}
av_strerror(AVERROR(errno), errbuf, sizeof(errbuf));
av_log(ctx, AV_LOG_ERROR, "ioctl(VIDIOC_DQBUF): %s\n",
strerror(errno));
errbuf);
return AVERROR(errno);
}
@ -542,7 +552,8 @@ static int mmap_start(AVFormatContext *ctx)
{
struct video_data *s = ctx->priv_data;
enum v4l2_buf_type type;
int i, res;
int i, res, err;
char errbuf[128];
for (i = 0; i < s->buffers; i++) {
struct v4l2_buffer buf = {
@ -553,10 +564,12 @@ static int mmap_start(AVFormatContext *ctx)
res = ioctl(s->fd, VIDIOC_QBUF, &buf);
if (res < 0) {
err = AVERROR(errno);
av_strerror(err, errbuf, sizeof(errbuf));
av_log(ctx, AV_LOG_ERROR, "ioctl(VIDIOC_QBUF): %s\n",
strerror(errno));
errbuf);
return AVERROR(errno);
return err;
}
}
s->buffers_queued = s->buffers;
@ -564,10 +577,12 @@ static int mmap_start(AVFormatContext *ctx)
type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
res = ioctl(s->fd, VIDIOC_STREAMON, &type);
if (res < 0) {
err = AVERROR(errno);
av_strerror(err, errbuf, sizeof(errbuf));
av_log(ctx, AV_LOG_ERROR, "ioctl(VIDIOC_STREAMON): %s\n",
strerror(errno));
errbuf);
return AVERROR(errno);
return err;
}
return 0;
@ -677,8 +692,10 @@ static int v4l2_set_parameters(AVFormatContext *s1)
}
} else {
if (ioctl(s->fd, VIDIOC_G_PARM, &streamparm) != 0) {
char errbuf[128];
av_strerror(AVERROR(errno), errbuf, sizeof(errbuf));
av_log(s1, AV_LOG_ERROR, "ioctl(VIDIOC_G_PARM): %s\n",
strerror(errno));
errbuf);
return AVERROR(errno);
}
}
@ -779,8 +796,10 @@ static int v4l2_read_header(AVFormatContext *s1)
"Querying the device for the current frame size\n");
fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
if (ioctl(s->fd, VIDIOC_G_FMT, &fmt) < 0) {
char errbuf[128];
av_strerror(AVERROR(errno), errbuf, sizeof(errbuf));
av_log(s1, AV_LOG_ERROR, "ioctl(VIDIOC_G_FMT): %s\n",
strerror(errno));
errbuf);
return AVERROR(errno);
}