linux-kernel - Re: [PATCH v2] media: amphion: only insert the first sequence startcode for vc1l format

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Date:   Fri, 8 Jul 2022 10:32:20 +0200
From:   Hans Verkuil <hverkuil-cisco@...all.nl>
To:     Ming Qian <ming.qian@....com>, mchehab@...nel.org
Cc:     shawnguo@...nel.org, robh+dt@...nel.org, s.hauer@...gutronix.de,
        kernel@...gutronix.de, festevam@...il.com, linux-imx@....com,
        linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v2] media: amphion: only insert the first sequence
 startcode for vc1l format

Please ignore. I had accidentally both v1 and v2 of this patch in my patch series.

Sorry for the noise.

Still, based on the comments on v1 this v2 needs an update anyway.

Regards,

	Hans

On 7/8/22 10:24, Hans Verkuil wrote:
> Hi Ming Qian,
> 
> Since the v1 has already been merged, this patch no longer applies.
> 
> Can you make a v3 on top of https://git.linuxtv.org/media_stage.git/?
> 
> The only change that a v3 has to do is the removal of V4L2_FMT_FLAG_DYN_RESOLUTION.
> 
> Regards,
> 
> 	Hans
> 
> On 6/30/22 03:30, Ming Qian wrote:
>> For some formats, the amphion vpu requires startcode
>> before sequence and frame, such as vc1, vp8.
>>
>> But for V4L2_PIX_FMT_VC1_ANNEX_L, only the first sequence startcode
>> is needed, the extra startcode will cause decoding error.
>> So after seek, we don't need to insert the sequence startcode.
>>
>> In other words, for V4L2_PIX_FMT_VC1_ANNEX_L,
>> the vpu doesn't support dynamic resolution change.
>>
>> Fixes: 145e936380edb ("media: amphion: implement malone decoder rpc interface")
>> Signed-off-by: Ming Qian <ming.qian@....com>
>> ---
>> v2
>> - remove V4L2_FMT_FLAG_DYN_RESOLUTION from the format V4L2_PIX_FMT_VC1_ANNEX_L
>>  drivers/media/platform/amphion/vdec.c       | 2 +-
>>  drivers/media/platform/amphion/vpu.h        | 1 +
>>  drivers/media/platform/amphion/vpu_malone.c | 2 ++
>>  drivers/media/platform/amphion/vpu_rpc.h    | 7 ++++++-
>>  4 files changed, 10 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/media/platform/amphion/vdec.c b/drivers/media/platform/amphion/vdec.c
>> index 09d4f27970ec..6eab9e711cba 100644
>> --- a/drivers/media/platform/amphion/vdec.c
>> +++ b/drivers/media/platform/amphion/vdec.c
>> @@ -104,7 +104,6 @@ static const struct vpu_format vdec_formats[] = {
>>  		.pixfmt = V4L2_PIX_FMT_VC1_ANNEX_L,
>>  		.num_planes = 1,
>>  		.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE,
>> -		.flags = V4L2_FMT_FLAG_DYN_RESOLUTION
>>  	},
>>  	{
>>  		.pixfmt = V4L2_PIX_FMT_MPEG2,
>> @@ -731,6 +730,7 @@ static void vdec_stop_done(struct vpu_inst *inst)
>>  	vdec->eos_received = 0;
>>  	vdec->is_source_changed = false;
>>  	vdec->source_change = 0;
>> +	inst->total_input_count = 0;
>>  	vpu_inst_unlock(inst);
>>  }
>>  
>> diff --git a/drivers/media/platform/amphion/vpu.h b/drivers/media/platform/amphion/vpu.h
>> index e56b96a7e5d3..f914de6ed81e 100644
>> --- a/drivers/media/platform/amphion/vpu.h
>> +++ b/drivers/media/platform/amphion/vpu.h
>> @@ -258,6 +258,7 @@ struct vpu_inst {
>>  	struct vpu_format cap_format;
>>  	u32 min_buffer_cap;
>>  	u32 min_buffer_out;
>> +	u32 total_input_count;
>>  
>>  	struct v4l2_rect crop;
>>  	u32 colorspace;
>> diff --git a/drivers/media/platform/amphion/vpu_malone.c b/drivers/media/platform/amphion/vpu_malone.c
>> index c62b49e85060..f4a488bf9880 100644
>> --- a/drivers/media/platform/amphion/vpu_malone.c
>> +++ b/drivers/media/platform/amphion/vpu_malone.c
>> @@ -1314,6 +1314,8 @@ static int vpu_malone_insert_scode_vc1_l_seq(struct malone_scode_t *scode)
>>  	int size = 0;
>>  	u8 rcv_seqhdr[MALONE_VC1_RCV_SEQ_HEADER_LEN];
>>  
>> +	if (scode->inst->total_input_count)
>> +		return 0;
>>  	scode->need_data = 0;
>>  
>>  	ret = vpu_malone_insert_scode_seq(scode, MALONE_CODEC_ID_VC1_SIMPLE, sizeof(rcv_seqhdr));
>> diff --git a/drivers/media/platform/amphion/vpu_rpc.h b/drivers/media/platform/amphion/vpu_rpc.h
>> index 25119e5e807e..7eb6f01e6ab5 100644
>> --- a/drivers/media/platform/amphion/vpu_rpc.h
>> +++ b/drivers/media/platform/amphion/vpu_rpc.h
>> @@ -312,11 +312,16 @@ static inline int vpu_iface_input_frame(struct vpu_inst *inst,
>>  					struct vb2_buffer *vb)
>>  {
>>  	struct vpu_iface_ops *ops = vpu_core_get_iface(inst->core);
>> +	int ret;
>>  
>>  	if (!ops || !ops->input_frame)
>>  		return -EINVAL;
>>  
>> -	return ops->input_frame(inst->core->iface, inst, vb);
>> +	ret = ops->input_frame(inst->core->iface, inst, vb);
>> +	if (ret < 0)
>> +		return ret;
>> +	inst->total_input_count++;
>> +	return ret;
>>  }
>>  
>>  static inline int vpu_iface_config_memory_resource(struct vpu_inst *inst,