Hi Hans,
Thanks for the comments!
On 12/05/2016 01:32 PM, Hans Verkuil wrote:
> I have two comments (and the same two comments apply to the video encoder patch
> as well):
>
> On 12/01/2016 10:03 AM, Stanimir Varbanov wrote:
>> This consists of video decoder implementation plus decoder
>> controls.
>>
>> Signed-off-by: Stanimir Varbanov <stanimir.varbanov@xxxxxxxxxx>
>> ---
>> drivers/media/platform/qcom/venus/vdec.c | 976 +++++++++++++++++++++++++
>> drivers/media/platform/qcom/venus/vdec.h | 32 +
>> drivers/media/platform/qcom/venus/vdec_ctrls.c | 149 ++++
>> 3 files changed, 1157 insertions(+)
>> create mode 100644 drivers/media/platform/qcom/venus/vdec.c
>> create mode 100644 drivers/media/platform/qcom/venus/vdec.h
>> create mode 100644 drivers/media/platform/qcom/venus/vdec_ctrls.c
>>
>> diff --git a/drivers/media/platform/qcom/venus/vdec.c b/drivers/media/platform/qcom/venus/vdec.c
>> new file mode 100644
>> index 000000000000..9f585a1e0ff1
>> --- /dev/null
>> +++ b/drivers/media/platform/qcom/venus/vdec.c
>> @@ -0,0 +1,976 @@
>
> <snip>
>
>> +static int
>> +vdec_s_selection(struct file *file, void *fh, struct v4l2_selection *s)
>> +{
>> + struct venus_inst *inst = to_inst(file);
>> +
>> + if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
>> + s->target != V4L2_SEL_TGT_COMPOSE)
>> + return -EINVAL;
>> +
>> + switch (s->target) {
>> + case V4L2_SEL_TGT_COMPOSE:
>> + s->r.width = inst->out_width;
>> + s->r.height = inst->out_height;
>> + break;
>> + default:
>> + return -EINVAL;
>> + }
>> +
>> + s->r.top = 0;
>> + s->r.left = 0;
>> +
>> + return 0;
>> +}
>
> This doesn't actually set anything, so what's the point of this function?
>
> I've fixed the corresponding test in v4l2-compliance so you can now drop this
> op and v4l2-compliance won't complain anymore.
OK I will give a try.
>
>> +static int vdec_start_streaming(struct vb2_queue *q, unsigned int count)
>> +{
>> + struct venus_inst *inst = vb2_get_drv_priv(q);
>> + struct venus_core *core = inst->core;
>> + struct device *dev = core->dev;
>> + u32 ptype;
>> + int ret;
>> +
>> + mutex_lock(&inst->lock);
>> +
>> + if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
>> + inst->streamon_out = 1;
>> + else
>> + inst->streamon_cap = 1;
>> +
>> + if (!(inst->streamon_out & inst->streamon_cap)) {
>> + mutex_unlock(&inst->lock);
>> + return 0;
>> + }
>> +
>> + inst->reconfig = false;
>> + inst->sequence = 0;
>> + inst->codec_cfg = false;
>> +
>> + ret = pm_runtime_get_sync(dev);
>> + if (ret < 0)
>> + return ret;
>
> This should be a goto so that 'helper_buffers_done(inst, VB2_BUF_STATE_QUEUED);'
> is called on error.
>
> It's wrong anyway since you don't unlock the mutex in this return path either.
yes, this return is wrong, will correct it in next version.
--
regards,
Stan
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