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lavd/v4l2: use pixel format variable names consistently 

We now use 'pixelformat' for V4L2_PIX_FMT_* (as they do in v4l2
documentation) and 'pix_fmt' for AVPixelFormat.

No functional change in the code.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Giorgio Vazzana 2014-11-06 11:30:41 +01:00 committed by Michael Niedermayer
parent 8afaa03c53
commit be0356ca05
1 changed files with 11 additions and 10 deletions
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21
libavdevice/v4l2.c
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@ -67,7 +67,7 @@ static const int desired_video_buffers = 256;
struct video_data {
AVClass *class;
int fd;
int frame_format; /* V4L2_PIX_FMT_* */
int pixelformat; /* V4L2_PIX_FMT_* */
int width, height;
int frame_size;
int interlaced;
@ -183,18 +183,19 @@ fail:
}
static int device_init(AVFormatContext *ctx, int *width, int *height,
uint32_t pix_fmt)
uint32_t pixelformat)
{
struct video_data *s = ctx->priv_data;
struct v4l2_format fmt = { .type = V4L2_BUF_TYPE_VIDEO_CAPTURE };
struct v4l2_pix_format *pix = &fmt.fmt.pix;
int res = 0;
pix->width = *width;
pix->height = *height;
pix->pixelformat = pix_fmt;
pix->field = V4L2_FIELD_ANY;
fmt.fmt.pix.width = *width;
fmt.fmt.pix.height = *height;
fmt.fmt.pix.pixelformat = pixelformat;
fmt.fmt.pix.field = V4L2_FIELD_ANY;
/* Some drivers will fail and return EINVAL when the pixelformat
is not supported (even if type field is valid and supported) */
if (v4l2_ioctl(s->fd, VIDIOC_S_FMT, &fmt) < 0)
res = AVERROR(errno);
@ -206,11 +207,11 @@ static int device_init(AVFormatContext *ctx, int *width, int *height,
*height = fmt.fmt.pix.height;
}
if (pix_fmt != fmt.fmt.pix.pixelformat) {
if (pixelformat != fmt.fmt.pix.pixelformat) {
av_log(ctx, AV_LOG_DEBUG,
"The V4L2 driver changed the pixel format "
"from 0x%08X to 0x%08X\n",
pix_fmt, fmt.fmt.pix.pixelformat);
pixelformat, fmt.fmt.pix.pixelformat);
res = AVERROR(EINVAL);
}
@ -931,7 +932,7 @@ static int v4l2_read_header(AVFormatContext *ctx)
if ((res = av_image_check_size(s->width, s->height, 0, ctx)) < 0)
goto fail;
s->frame_format = desired_format;
s->pixelformat = desired_format;
st->codec->pix_fmt = ff_fmt_v4l2ff(desired_format, codec_id);
s->frame_size =