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author | Albert Wang <twang13@marvell.com> | 2012-08-01 02:45:41 -0300 |
---|---|---|
committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-08-15 20:05:40 -0300 |
commit | a70a6c4330e552b829eb1aecb390fef5841e0918 (patch) | |
tree | d74728eaba375e977d8b9738de85fccc1574bf16 /drivers/media | |
parent | c4ede4cedad1163345a2c2b4abc7e2208034190e (diff) | |
download | blackbird-op-linux-a70a6c4330e552b829eb1aecb390fef5841e0918.tar.gz blackbird-op-linux-a70a6c4330e552b829eb1aecb390fef5841e0918.zip |
[media] media: soc_camera: don't clear pix->sizeimage in JPEG mode
In JPEG mode, the size of image is variable due to different JPEG compression
rate. We only can get the pix->sizeimage from the user.
If we clear pix->sizeimage in soc_camera_try_fmt() then we will get it from:
ret = soc_mbus_image_size(xlate->host_fmt, pix->bytesperline,
pix->height);
if (ret < 0)
return ret;
pix->sizeimage = max_t(u32, pix->sizeimage, ret);
In general, this sizeimage will be larger than the actul JPEG image size.
But vb2 will check the buffer and size of image in __qbuf_userptr():
/* Check if the provided plane buffer is large enough */
if (planes[plane].length < q->plane_sizes[plane])
So we shouldn't clear the pix->sizeimage and also shouldn't re-calculate
the pix->sizeimage in soc_mbus_image_size() in JPEG mode
We also shouldn't re-calculate pix->bytesperline:
ret = soc_mbus_bytes_per_line(pix->width, xlate->host_fmt);
if (ret < 0)
return ret;
pix->bytesperline = max_t(u32, pix->bytesperline, ret);
pix->bytesperline also should be set by the user or by the driver's
try_fmt() implementation.
Change-Id: I700690a2287346127a624b5260922eaa5427a596
Signed-off-by: Albert Wang <twang13@marvell.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media')
-rw-r--r-- | drivers/media/platform/soc_camera.c | 3 | ||||
-rw-r--r-- | drivers/media/platform/soc_mediabus.c | 6 |
2 files changed, 8 insertions, 1 deletions
diff --git a/drivers/media/platform/soc_camera.c b/drivers/media/platform/soc_camera.c index 6da8e5db4d2b..10b57f8e7ec8 100644 --- a/drivers/media/platform/soc_camera.c +++ b/drivers/media/platform/soc_camera.c @@ -182,7 +182,8 @@ static int soc_camera_try_fmt(struct soc_camera_device *icd, dev_dbg(icd->pdev, "TRY_FMT(%c%c%c%c, %ux%u)\n", pixfmtstr(pix->pixelformat), pix->width, pix->height); - if (!(ici->capabilities & SOCAM_HOST_CAP_STRIDE)) { + if (pix->pixelformat != V4L2_PIX_FMT_JPEG && + !(ici->capabilities & SOCAM_HOST_CAP_STRIDE)) { pix->bytesperline = 0; pix->sizeimage = 0; } diff --git a/drivers/media/platform/soc_mediabus.c b/drivers/media/platform/soc_mediabus.c index 89dce097a827..a397812635d6 100644 --- a/drivers/media/platform/soc_mediabus.c +++ b/drivers/media/platform/soc_mediabus.c @@ -378,6 +378,9 @@ EXPORT_SYMBOL(soc_mbus_samples_per_pixel); s32 soc_mbus_bytes_per_line(u32 width, const struct soc_mbus_pixelfmt *mf) { + if (mf->fourcc == V4L2_PIX_FMT_JPEG) + return 0; + if (mf->layout != SOC_MBUS_LAYOUT_PACKED) return width * mf->bits_per_sample / 8; @@ -400,6 +403,9 @@ EXPORT_SYMBOL(soc_mbus_bytes_per_line); s32 soc_mbus_image_size(const struct soc_mbus_pixelfmt *mf, u32 bytes_per_line, u32 height) { + if (mf->fourcc == V4L2_PIX_FMT_JPEG) + return 0; + if (mf->layout == SOC_MBUS_LAYOUT_PACKED) return bytes_per_line * height; |