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| author | Philipp Zabel <p.zabel@pengutronix.de> | 2022-04-06 11:51:45 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@kernel.org> | 2022-04-24 10:46:27 +0300 |
| commit | 7e32aab9f47d54326ef5aab3a38f70727fae4c23 (patch) | |
| tree | 138312777ade6a3e4ba3763ea5b395fba2699256 /drivers/media/platform/chips-media/coda-jpeg.c | |
| parent | fb11bc40c4cb83741540bd8da6ad93155868c466 (diff) | |
| download | linux-7e32aab9f47d54326ef5aab3a38f70727fae4c23.tar.xz | |
media: coda: add JPEG downscale support
The JPEG decoder in the CODA960 VPU can downscale images while decoding,
with a factor of 1/2, 1/4, or 1/8.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Diffstat (limited to 'drivers/media/platform/chips-media/coda-jpeg.c')
| -rw-r--r-- | drivers/media/platform/chips-media/coda-jpeg.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/media/platform/chips-media/coda-jpeg.c b/drivers/media/platform/chips-media/coda-jpeg.c index 21d14f9bd7e5..6b19efcd7fd5 100644 --- a/drivers/media/platform/chips-media/coda-jpeg.c +++ b/drivers/media/platform/chips-media/coda-jpeg.c @@ -1328,6 +1328,7 @@ static int coda9_jpeg_prepare_decode(struct coda_ctx *ctx) struct coda_q_data *q_data_src, *q_data_dst; struct vb2_v4l2_buffer *src_buf, *dst_buf; int chroma_interleave; + int scl_hor_mode, scl_ver_mode; src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx); dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx); @@ -1335,6 +1336,9 @@ static int coda9_jpeg_prepare_decode(struct coda_ctx *ctx) q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE); dst_fourcc = q_data_dst->fourcc; + scl_hor_mode = coda_jpeg_scale(q_data_src->width, q_data_dst->width); + scl_ver_mode = coda_jpeg_scale(q_data_src->height, q_data_dst->height); + if (vb2_get_plane_payload(&src_buf->vb2_buf, 0) == 0) vb2_set_plane_payload(&src_buf->vb2_buf, 0, vb2_plane_size(&src_buf->vb2_buf, 0)); @@ -1383,7 +1387,11 @@ static int coda9_jpeg_prepare_decode(struct coda_ctx *ctx) coda_write(dev, 0, CODA9_REG_JPEG_ROT_INFO); coda_write(dev, bus_req_num[chroma_format], CODA9_REG_JPEG_OP_INFO); coda_write(dev, mcu_info[chroma_format], CODA9_REG_JPEG_MCU_INFO); - coda_write(dev, 0, CODA9_REG_JPEG_SCL_INFO); + if (scl_hor_mode || scl_ver_mode) + val = CODA9_JPEG_SCL_ENABLE | (scl_hor_mode << 2) | scl_ver_mode; + else + val = 0; + coda_write(dev, val, CODA9_REG_JPEG_SCL_INFO); coda_write(dev, chroma_interleave, CODA9_REG_JPEG_DPB_CONFIG); coda_write(dev, ctx->params.jpeg_restart_interval, CODA9_REG_JPEG_RST_INTVAL); |