linux-kernel - Re: [PATCH v2 2/2] media: amphion: support to decode sorenson spark video

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Message-ID: <bb9fb55bf81b978041e44e04d619adf43488f467.camel@ndufresne.ca>
Date:   Thu, 19 Jan 2023 15:41:19 -0500
From:   Nicolas Dufresne <nicolas@...fresne.ca>
To:     Ming Qian <ming.qian@....com>, mchehab@...nel.org,
        hverkuil-cisco@...all.nl
Cc:     shawnguo@...nel.org, robh+dt@...nel.org, s.hauer@...gutronix.de,
        kernel@...gutronix.de, festevam@...il.com, linux-imx@....com,
        xiahong.bao@....com, eagle.zhou@....com, tao.jiang_2@....com,
        linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v2 2/2] media: amphion: support to decode sorenson spark
 video

Le jeudi 12 janvier 2023 à 17:04 +0800, Ming Qian a écrit :
> Sorenson Spark is an implementation of H.263 for use
> in Flash Video and Adobe Flash files.
> amphion decoder can support it by insert some startcode
> before sequence and picture.

Its historical codec, but I'm surprise it does not also support H263 (and
possibly H263+). Note a review comment of course, just a curiosity.

> 
> Signed-off-by: Ming Qian <ming.qian@....com>
> ---
>  drivers/media/platform/amphion/vdec.c       |  7 +++++++
>  drivers/media/platform/amphion/vpu_malone.c | 18 ++++++++++++++++++
>  2 files changed, 25 insertions(+)
> 
> diff --git a/drivers/media/platform/amphion/vdec.c b/drivers/media/platform/amphion/vdec.c
> index 87f9f8e90ab1..09304b96f40d 100644
> --- a/drivers/media/platform/amphion/vdec.c
> +++ b/drivers/media/platform/amphion/vdec.c
> @@ -165,6 +165,13 @@ static const struct vpu_format vdec_formats[] = {
>  		.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE,
>  		.flags = V4L2_FMT_FLAG_DYN_RESOLUTION | V4L2_FMT_FLAG_COMPRESSED
>  	},
> +	{
> +		.pixfmt = V4L2_PIX_FMT_SPK,
> +		.mem_planes = 1,
> +		.comp_planes = 1,
> +		.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE,
> +		.flags = V4L2_FMT_FLAG_DYN_RESOLUTION | V4L2_FMT_FLAG_COMPRESSED
> +	},
>  	{0, 0, 0, 0},
>  };
>  
> diff --git a/drivers/media/platform/amphion/vpu_malone.c b/drivers/media/platform/amphion/vpu_malone.c
> index 2c9bfc6a5a72..67ba637c4c7f 100644
> --- a/drivers/media/platform/amphion/vpu_malone.c
> +++ b/drivers/media/platform/amphion/vpu_malone.c
> @@ -562,6 +562,7 @@ static struct malone_fmt_mapping fmt_mappings[] = {
>  	{V4L2_PIX_FMT_H263,        MALONE_FMT_ASP},
>  	{V4L2_PIX_FMT_JPEG,        MALONE_FMT_JPG},
>  	{V4L2_PIX_FMT_VP8,         MALONE_FMT_VP8},
> +	{V4L2_PIX_FMT_SPK,         MALONE_FMT_SPK},
>  };
>  
>  static enum vpu_malone_format vpu_malone_format_remap(u32 pixelformat)
> @@ -987,6 +988,7 @@ static const struct malone_padding_scode padding_scodes[] = {
>  	{SCODE_PADDING_EOS,      V4L2_PIX_FMT_XVID,        {0xb1010000, 0x0}},
>  	{SCODE_PADDING_EOS,      V4L2_PIX_FMT_H263,        {0xb1010000, 0x0}},
>  	{SCODE_PADDING_EOS,      V4L2_PIX_FMT_VP8,         {0x34010000, 0x0}},
> +	{SCODE_PADDING_EOS,      V4L2_PIX_FMT_SPK,         {0x34010000, 0x0}},
>  	{SCODE_PADDING_EOS,      V4L2_PIX_FMT_JPEG,        {0xefff0000, 0x0}},
>  	{SCODE_PADDING_ABORT,    V4L2_PIX_FMT_H264,        {0x0B010000, 0}},
>  	{SCODE_PADDING_ABORT,    V4L2_PIX_FMT_H264_MVC,    {0x0B010000, 0}},
> @@ -998,6 +1000,7 @@ static const struct malone_padding_scode padding_scodes[] = {
>  	{SCODE_PADDING_ABORT,    V4L2_PIX_FMT_XVID,        {0xb1010000, 0x0}},
>  	{SCODE_PADDING_ABORT,    V4L2_PIX_FMT_H263,        {0xb1010000, 0x0}},
>  	{SCODE_PADDING_ABORT,    V4L2_PIX_FMT_VP8,         {0x34010000, 0x0}},
> +	{SCODE_PADDING_ABORT,    V4L2_PIX_FMT_SPK,         {0x34010000, 0x0}},
>  	{SCODE_PADDING_EOS,      V4L2_PIX_FMT_JPEG,        {0x0, 0x0}},
>  	{SCODE_PADDING_BUFFLUSH, V4L2_PIX_FMT_H264,        {0x15010000, 0x0}},
>  	{SCODE_PADDING_BUFFLUSH, V4L2_PIX_FMT_H264_MVC,    {0x15010000, 0x0}},
> @@ -1411,6 +1414,16 @@ static int vpu_malone_insert_scode_vp8_pic(struct malone_scode_t *scode)
>  	return size;
>  }
>  
> +static int vpu_malone_insert_scode_spk_seq(struct malone_scode_t *scode)
> +{
> +	return vpu_malone_insert_scode_seq(scode, MALONE_CODEC_ID_SPK, 0);
> +}
> +
> +static int vpu_malone_insert_scode_spk_pic(struct malone_scode_t *scode)
> +{
> +	return vpu_malone_insert_scode_pic(scode, MALONE_CODEC_ID_SPK, 0);
> +}
> +
>  static const struct malone_scode_handler scode_handlers[] = {
>  	{
>  		/* fix me, need to swap return operation after gstreamer swap */
> @@ -1427,6 +1440,11 @@ static const struct malone_scode_handler scode_handlers[] = {
>  		.insert_scode_seq = vpu_malone_insert_scode_vp8_seq,
>  		.insert_scode_pic = vpu_malone_insert_scode_vp8_pic,
>  	},
> +	{
> +		.pixelformat = V4L2_PIX_FMT_SPK,
> +		.insert_scode_seq = vpu_malone_insert_scode_spk_seq,
> +		.insert_scode_pic = vpu_malone_insert_scode_spk_pic,
> +	},
>  };
>  
>  static const struct malone_scode_handler *get_scode_handler(u32 pixelformat)