media: coda: implement encoder frame size enumeration

The stateful encoder API requires VIDIOC_ENUM_FRAMESIZES to be
implemented.
Allow enumeration of supported frame sizes for encoding.

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+samsung@kernel.org>

diff --git a/drivers/media/platform/coda/coda-common.c b/drivers/media/platform/coda/coda-common.c
index c0421f0..943f003 100644 (file)
--- a/drivers/media/platform/coda/coda-common.c
+++ b/drivers/media/platform/coda/coda-common.c
@@ -1077,6 +1077,42 @@ static int coda_decoder_cmd(struct file *file, void *fh,
        return 0;
 }
 
+static int coda_enum_framesizes(struct file *file, void *fh,
+                               struct v4l2_frmsizeenum *fsize)
+{
+       struct coda_ctx *ctx = fh_to_ctx(fh);
+       struct coda_q_data *q_data_dst;
+       const struct coda_codec *codec;
+
+       if (ctx->inst_type != CODA_INST_ENCODER)
+               return -ENOTTY;
+
+       if (fsize->index)
+               return -EINVAL;
+
+       if (coda_format_normalize_yuv(fsize->pixel_format) ==
+           V4L2_PIX_FMT_YUV420) {
+               q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
+               codec = coda_find_codec(ctx->dev, fsize->pixel_format,
+                                       q_data_dst->fourcc);
+       } else {
+               codec = coda_find_codec(ctx->dev, V4L2_PIX_FMT_YUV420,
+                                       fsize->pixel_format);
+       }
+       if (!codec)
+               return -EINVAL;
+
+       fsize->type = V4L2_FRMSIZE_TYPE_CONTINUOUS;
+       fsize->stepwise.min_width = MIN_W;
+       fsize->stepwise.max_width = codec->max_w;
+       fsize->stepwise.step_width = 1;
+       fsize->stepwise.min_height = MIN_H;
+       fsize->stepwise.max_height = codec->max_h;
+       fsize->stepwise.step_height = 1;
+
+       return 0;
+}
+
 static int coda_enum_frameintervals(struct file *file, void *fh,
                                    struct v4l2_frmivalenum *f)
 {
@@ -1255,6 +1291,7 @@ static const struct v4l2_ioctl_ops coda_ioctl_ops = {
        .vidioc_g_parm          = coda_g_parm,
        .vidioc_s_parm          = coda_s_parm,
 
+       .vidioc_enum_framesizes = coda_enum_framesizes,
        .vidioc_enum_frameintervals = coda_enum_frameintervals,
 
        .vidioc_subscribe_event = coda_subscribe_event,