RE: [RFC/PATCH v7 1/5] Changes in include/linux/videodev2.h for MFC 5.1
Hi, I commented as below. -Original Message- From: Kamil Debski [mailto:k.deb...@samsung.com] Sent: Saturday, March 05, 2011 3:57 AM To: 'Laurent Pinchart' Cc: linux-me...@vger.kernel.org; linux-samsung-soc@vger.kernel.org; Marek Szyprowski; kyungmin.p...@samsung.com; jaeryul...@samsung.com; kgene@samsung.com Subject: RE: [RFC/PATCH v7 1/5] Changes in include/linux/videodev2.h for MFC 5.1 Hi, -Original Message- From: Laurent Pinchart [mailto:laurent.pinch...@ideasonboard.com] Sent: 04 March 2011 17:39 To: Kamil Debski Cc: linux-me...@vger.kernel.org; linux-samsung-soc@vger.kernel.org; m.szyprow...@samsung.com; kyungmin.p...@samsung.com; jaeryul...@samsung.com; kgene@samsung.com Subject: Re: [RFC/PATCH v7 1/5] Changes in include/linux/videodev2.h for MFC 5.1 On Friday 04 March 2011 12:26:18 Kamil Debski wrote: This patch adds fourcc values for compressed video stream formats and V4L2_CTRL_CLASS_CODEC. Also adds controls used by MFC 5.1 driver. Signed-off-by: Kamil Debski k.deb...@samsung.com Signed-off-by: Kyungmin Park kyungmin.p...@samsung.com --- include/linux/videodev2.h | 39 +++ 1 files changed, 39 insertions(+), 0 deletions(-) diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h index a94c4d5..a48a42e 100644 --- a/include/linux/videodev2.h +++ b/include/linux/videodev2.h @@ -369,6 +369,19 @@ struct v4l2_pix_format { #define V4L2_PIX_FMT_DV v4l2_fourcc('d', 'v', 's', 'd') /* 1394 */ #define V4L2_PIX_FMT_MPEG v4l2_fourcc('M', 'P', 'E', 'G') /* MPEG-1/2/4 */ +#define V4L2_PIX_FMT_H264 v4l2_fourcc('H', '2', '6', '4') /* H264 */ +#define V4L2_PIX_FMT_H263 v4l2_fourcc('H', '2', '6', '3') /* H263 */ +#define V4L2_PIX_FMT_MPEG12 v4l2_fourcc('M', 'P', '1', '2') /* MPEG-1/2 */ +#define V4L2_PIX_FMT_MPEG4v4l2_fourcc('M', 'P', 'G', '4') /* MPEG-4 */ +#define V4L2_PIX_FMT_DIVX v4l2_fourcc('D', 'I', 'V', 'X') /* DivX */ +#define V4L2_PIX_FMT_DIVX3v4l2_fourcc('D', 'I', 'V', '3') /* DivX 3.11 */ +#define V4L2_PIX_FMT_DIVX4v4l2_fourcc('D', 'I', 'V', '4') /* DivX 4.12 */ +#define V4L2_PIX_FMT_DIVX500 v4l2_fourcc('D', 'X', '5', '2') /* DivX 5.00 - 5.02 */ +#define V4L2_PIX_FMT_DIVX503 v4l2_fourcc('D', 'X', '5', '3') /* DivX 5.03 - x */ +#define V4L2_PIX_FMT_XVID v4l2_fourcc('X', 'V', 'I', 'D') /* Xvid */ +#define V4L2_PIX_FMT_VC1 v4l2_fourcc('V', 'C', '1', 'A') /* VC- 1 */ +#define V4L2_PIX_FMT_VC1_RCV v4l2_fourcc('V', 'C', '1', 'R') /* VC- 1 RCV */ + Hans, you mentioned some time ago that you were against ading H.264 or MPEG4 fourccs, and that drivers should use the MPEG controls instead. Could you clarify your current position on this ? If I remember correct there was no clear conclusion on this. I hope we can discuss this during the upcoming meeting. Have you got an alternative suggestion to using fourccs? The existing MPEG controls won't cover all the functions and parameters that are used by video codecs. The controls that are in this patch are the ones related to decoding, there is even more for encoding. Yesterday I have been talking with Hans on the IRC channel about the control for quantization parameters and he has suggested to use different for MPEG4, H263 and H264. Personally I'd like to have a common one, as the QP meaning is the same in those 3 cases, the difference is the range of the value. So I think that this still is a subject that could use more discussion as there are a few ideas. According to the fource.org, and if fourcc definition here has been made from fourcc.org, We need to have a discussion about new types that Kamil added not only h264 but divx_xxx. QP might be a same topic. So let's discuss more at Poland meeting. Best regards, -- Kamil Debski Linux Platform Group Samsung Poland RD Center -- To unsubscribe from this list: send the line unsubscribe linux-samsung-soc in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [RFC/PATCH v7 1/5] Changes in include/linux/videodev2.h for MFC 5.1
On Friday, March 04, 2011 19:56:35 Kamil Debski wrote: Hi, -Original Message- From: Laurent Pinchart [mailto:laurent.pinch...@ideasonboard.com] Sent: 04 March 2011 17:39 To: Kamil Debski Cc: linux-me...@vger.kernel.org; linux-samsung-soc@vger.kernel.org; m.szyprow...@samsung.com; kyungmin.p...@samsung.com; jaeryul...@samsung.com; kgene@samsung.com Subject: Re: [RFC/PATCH v7 1/5] Changes in include/linux/videodev2.h for MFC 5.1 On Friday 04 March 2011 12:26:18 Kamil Debski wrote: This patch adds fourcc values for compressed video stream formats and V4L2_CTRL_CLASS_CODEC. Also adds controls used by MFC 5.1 driver. Signed-off-by: Kamil Debski k.deb...@samsung.com Signed-off-by: Kyungmin Park kyungmin.p...@samsung.com --- include/linux/videodev2.h | 39 +++ 1 files changed, 39 insertions(+), 0 deletions(-) diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h index a94c4d5..a48a42e 100644 --- a/include/linux/videodev2.h +++ b/include/linux/videodev2.h @@ -369,6 +369,19 @@ struct v4l2_pix_format { #define V4L2_PIX_FMT_DV v4l2_fourcc('d', 'v', 's', 'd') /* 1394 */ #define V4L2_PIX_FMT_MPEG v4l2_fourcc('M', 'P', 'E', 'G') /* MPEG-1/2/4 */ +#define V4L2_PIX_FMT_H264 v4l2_fourcc('H', '2', '6', '4') /* H264 */ +#define V4L2_PIX_FMT_H263 v4l2_fourcc('H', '2', '6', '3') /* H263 */ +#define V4L2_PIX_FMT_MPEG12 v4l2_fourcc('M', 'P', '1', '2') /* MPEG-1/2 */ +#define V4L2_PIX_FMT_MPEG4v4l2_fourcc('M', 'P', 'G', '4') /* MPEG-4 */ +#define V4L2_PIX_FMT_DIVX v4l2_fourcc('D', 'I', 'V', 'X') /* DivX */ +#define V4L2_PIX_FMT_DIVX3v4l2_fourcc('D', 'I', 'V', '3') /* DivX 3.11 */ +#define V4L2_PIX_FMT_DIVX4v4l2_fourcc('D', 'I', 'V', '4') /* DivX 4.12 */ +#define V4L2_PIX_FMT_DIVX500 v4l2_fourcc('D', 'X', '5', '2') /* DivX 5.00 - 5.02 */ +#define V4L2_PIX_FMT_DIVX503 v4l2_fourcc('D', 'X', '5', '3') /* DivX 5.03 - x */ +#define V4L2_PIX_FMT_XVID v4l2_fourcc('X', 'V', 'I', 'D') /* Xvid */ +#define V4L2_PIX_FMT_VC1 v4l2_fourcc('V', 'C', '1', 'A') /* VC- 1 */ +#define V4L2_PIX_FMT_VC1_RCV v4l2_fourcc('V', 'C', '1', 'R') /* VC- 1 RCV */ + Hans, you mentioned some time ago that you were against ading H.264 or MPEG4 fourccs, and that drivers should use the MPEG controls instead. Could you clarify your current position on this ? If I remember correct there was no clear conclusion on this. I hope we can discuss this during the upcoming meeting. Yes, we need to discuss this. Have you got an alternative suggestion to using fourccs? The existing MPEG controls won't cover all the functions and parameters that are used by video codecs. The controls that are in this patch are the ones related to decoding, there is even more for encoding. Yesterday I have been talking with Hans on the IRC channel about the control for quantization parameters and he has suggested to use different for MPEG4, H263 and H264. Personally I'd like to have a common one, as the QP meaning is the same in those 3 cases, the difference is the range of the value. So I think that this still is a subject that could use more discussion as there are a few ideas. When I made the MPEG API originally I did design it to be usable for other compression schemes as well. But we need to review that API in light of the current developments and see if it can be used unchanged, needs tweaking or perhaps should be abandoned altogether. Regards, Hans -- Hans Verkuil - video4linux developer - sponsored by Cisco -- To unsubscribe from this list: send the line unsubscribe linux-samsung-soc in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [RFC/PATCH v7 1/5] Changes in include/linux/videodev2.h for MFC 5.1
On Friday 04 March 2011 12:26:18 Kamil Debski wrote: This patch adds fourcc values for compressed video stream formats and V4L2_CTRL_CLASS_CODEC. Also adds controls used by MFC 5.1 driver. Signed-off-by: Kamil Debski k.deb...@samsung.com Signed-off-by: Kyungmin Park kyungmin.p...@samsung.com --- include/linux/videodev2.h | 39 +++ 1 files changed, 39 insertions(+), 0 deletions(-) diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h index a94c4d5..a48a42e 100644 --- a/include/linux/videodev2.h +++ b/include/linux/videodev2.h @@ -369,6 +369,19 @@ struct v4l2_pix_format { #define V4L2_PIX_FMT_DV v4l2_fourcc('d', 'v', 's', 'd') /* 1394 */ #define V4L2_PIX_FMT_MPEG v4l2_fourcc('M', 'P', 'E', 'G') /* MPEG-1/2/4 */ +#define V4L2_PIX_FMT_H264 v4l2_fourcc('H', '2', '6', '4') /* H264 */ +#define V4L2_PIX_FMT_H263 v4l2_fourcc('H', '2', '6', '3') /* H263 */ +#define V4L2_PIX_FMT_MPEG12 v4l2_fourcc('M', 'P', '1', '2') /* MPEG-1/2 */ +#define V4L2_PIX_FMT_MPEG4v4l2_fourcc('M', 'P', 'G', '4') /* MPEG-4 */ +#define V4L2_PIX_FMT_DIVX v4l2_fourcc('D', 'I', 'V', 'X') /* DivX */ +#define V4L2_PIX_FMT_DIVX3v4l2_fourcc('D', 'I', 'V', '3') /* DivX 3.11 */ +#define V4L2_PIX_FMT_DIVX4v4l2_fourcc('D', 'I', 'V', '4') /* DivX 4.12 */ +#define V4L2_PIX_FMT_DIVX500 v4l2_fourcc('D', 'X', '5', '2') /* DivX 5.00 - 5.02 */ +#define V4L2_PIX_FMT_DIVX503 v4l2_fourcc('D', 'X', '5', '3') /* DivX 5.03 - x */ +#define V4L2_PIX_FMT_XVID v4l2_fourcc('X', 'V', 'I', 'D') /* Xvid */ +#define V4L2_PIX_FMT_VC1 v4l2_fourcc('V', 'C', '1', 'A') /* VC-1 */ +#define V4L2_PIX_FMT_VC1_RCV v4l2_fourcc('V', 'C', '1', 'R') /* VC-1 RCV */ + Hans, you mentioned some time ago that you were against ading H.264 or MPEG4 fourccs, and that drivers should use the MPEG controls instead. Could you clarify your current position on this ? -- Regards, Laurent Pinchart -- To unsubscribe from this list: send the line unsubscribe linux-samsung-soc in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
RE: [RFC/PATCH v7 1/5] Changes in include/linux/videodev2.h for MFC 5.1
Hi, -Original Message- From: Laurent Pinchart [mailto:laurent.pinch...@ideasonboard.com] Sent: 04 March 2011 17:39 To: Kamil Debski Cc: linux-me...@vger.kernel.org; linux-samsung-soc@vger.kernel.org; m.szyprow...@samsung.com; kyungmin.p...@samsung.com; jaeryul...@samsung.com; kgene@samsung.com Subject: Re: [RFC/PATCH v7 1/5] Changes in include/linux/videodev2.h for MFC 5.1 On Friday 04 March 2011 12:26:18 Kamil Debski wrote: This patch adds fourcc values for compressed video stream formats and V4L2_CTRL_CLASS_CODEC. Also adds controls used by MFC 5.1 driver. Signed-off-by: Kamil Debski k.deb...@samsung.com Signed-off-by: Kyungmin Park kyungmin.p...@samsung.com --- include/linux/videodev2.h | 39 +++ 1 files changed, 39 insertions(+), 0 deletions(-) diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h index a94c4d5..a48a42e 100644 --- a/include/linux/videodev2.h +++ b/include/linux/videodev2.h @@ -369,6 +369,19 @@ struct v4l2_pix_format { #define V4L2_PIX_FMT_DV v4l2_fourcc('d', 'v', 's', 'd') /* 1394 */ #define V4L2_PIX_FMT_MPEG v4l2_fourcc('M', 'P', 'E', 'G') /* MPEG-1/2/4 */ +#define V4L2_PIX_FMT_H264 v4l2_fourcc('H', '2', '6', '4') /* H264 */ +#define V4L2_PIX_FMT_H263 v4l2_fourcc('H', '2', '6', '3') /* H263 */ +#define V4L2_PIX_FMT_MPEG12 v4l2_fourcc('M', 'P', '1', '2') /* MPEG-1/2 */ +#define V4L2_PIX_FMT_MPEG4v4l2_fourcc('M', 'P', 'G', '4') /* MPEG-4 */ +#define V4L2_PIX_FMT_DIVX v4l2_fourcc('D', 'I', 'V', 'X') /* DivX */ +#define V4L2_PIX_FMT_DIVX3v4l2_fourcc('D', 'I', 'V', '3') /* DivX 3.11 */ +#define V4L2_PIX_FMT_DIVX4v4l2_fourcc('D', 'I', 'V', '4') /* DivX 4.12 */ +#define V4L2_PIX_FMT_DIVX500 v4l2_fourcc('D', 'X', '5', '2') /* DivX 5.00 - 5.02 */ +#define V4L2_PIX_FMT_DIVX503 v4l2_fourcc('D', 'X', '5', '3') /* DivX 5.03 - x */ +#define V4L2_PIX_FMT_XVID v4l2_fourcc('X', 'V', 'I', 'D') /* Xvid */ +#define V4L2_PIX_FMT_VC1 v4l2_fourcc('V', 'C', '1', 'A') /* VC- 1 */ +#define V4L2_PIX_FMT_VC1_RCV v4l2_fourcc('V', 'C', '1', 'R') /* VC- 1 RCV */ + Hans, you mentioned some time ago that you were against ading H.264 or MPEG4 fourccs, and that drivers should use the MPEG controls instead. Could you clarify your current position on this ? If I remember correct there was no clear conclusion on this. I hope we can discuss this during the upcoming meeting. Have you got an alternative suggestion to using fourccs? The existing MPEG controls won't cover all the functions and parameters that are used by video codecs. The controls that are in this patch are the ones related to decoding, there is even more for encoding. Yesterday I have been talking with Hans on the IRC channel about the control for quantization parameters and he has suggested to use different for MPEG4, H263 and H264. Personally I'd like to have a common one, as the QP meaning is the same in those 3 cases, the difference is the range of the value. So I think that this still is a subject that could use more discussion as there are a few ideas. Best regards, -- Kamil Debski Linux Platform Group Samsung Poland RD Center -- To unsubscribe from this list: send the line unsubscribe linux-samsung-soc in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html