This patch adds new V4L controls for VP8 encoding.
Signed-off-by: Kiran AVND <avnd.kiran@xxxxxxxxxxx>
Signed-off-by: Arun Kumar K <arun.kk@xxxxxxxxxxx>
---
Documentation/DocBook/media/v4l/controls.xml | 168 +++++++++++++++++++++++++-
drivers/media/v4l2-core/v4l2-ctrls.c | 39 +++++-
include/uapi/linux/v4l2-controls.h | 33 ++++-
3 files changed, 230 insertions(+), 10 deletions(-)
diff --git a/Documentation/DocBook/media/v4l/controls.xml b/Documentation/DocBook/media/v4l/controls.xml
index 8d7a779..4bcedbf 100644
--- a/Documentation/DocBook/media/v4l/controls.xml
+++ b/Documentation/DocBook/media/v4l/controls.xml
@@ -722,17 +722,22 @@ for more details.</para>
</section>
<section id="mpeg-controls">
- <title>MPEG Control Reference</title>
+ <title>Codec Control Reference</title>
- <para>Below all controls within the MPEG control class are
+ <para>Below all controls within the Codec control class are
described. First the generic controls, then controls specific for
certain hardware.</para>
+ <para>Note: These controls are applicable all codecs and
+not just MPEG. The defines are prefixed with V4L2_CID_MPEG/V4L2_MPEG
+as the controls were originally made for MPEG class and later
+extended to cover all encoding formats.</para>
+
<section>
- <title>Generic MPEG Controls</title>
+ <title>Generic Codec Controls</title>
<table pgwide="1" frame="none" id="mpeg-control-id">
- <title>MPEG Control IDs</title>
+ <title>Codec Control IDs</title>
<tgroup cols="4">
<colspec colname="c1" colwidth="1*" />
<colspec colname="c2" colwidth="6*" />
@@ -752,7 +757,7 @@ certain hardware.</para>
<row>
<entry spanname="id"><constant>V4L2_CID_MPEG_CLASS</constant> </entry>
<entry>class</entry>
- </row><row><entry spanname="descr">The MPEG class
+ </row><row><entry spanname="descr">The Codec class
descriptor. Calling &VIDIOC-QUERYCTRL; for this control will return a
description of this control class. This description can be used as the
caption of a Tab page in a GUI, for example.</entry>
@@ -3009,6 +3014,159 @@ in by the application. 0 = do not insert, 1 = insert packets.</entry>
</tgroup>
</table>
</section>
+
+ <section>
+ <title>VPX Control Reference</title>
+
+ <para>The VPX controls include controls for encoding parameters
+ of VPx video codec.</para>
+
+ <table pgwide="1" frame="none" id="vpx-control-id">
+ <title>VPX Control IDs</title>
+
+ <tgroup cols="4">
+ <colspec colname="c1" colwidth="1*" />
+ <colspec colname="c2" colwidth="6*" />
+ <colspec colname="c3" colwidth="2*" />
+ <colspec colname="c4" colwidth="6*" />
+ <spanspec namest="c1" nameend="c2" spanname="id" />
+ <spanspec namest="c2" nameend="c4" spanname="descr" />
+ <thead>
+ <row>
+ <entry spanname="id" align="left">ID</entry>
+ <entry align="left">Type</entry>
+ </row><row rowsep="1"><entry spanname="descr" align="left">Description</entry>
+ </row>
+ </thead>
+ <tbody valign="top">
+ <row><entry></entry></row>
+
+ <row><entry></entry></row>
+ <row id="v4l2-vpx-num-partitions">
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_VPX_NUM_PARTITIONS</constant></entry>
+ <entry>enum v4l2_vp8_num_partitions</entry>
+ </row>
+ <row><entry spanname="descr">The number of token partitions to use in VP8 encoder.
+Possible values are:</entry>
+ </row>
+ <row>
+ <entrytbl spanname="descr" cols="2">
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_CID_MPEG_VIDEO_VPX_1_PARTITION</constant></entry>
+ <entry>1 coefficient partition</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CID_MPEG_VIDEO_VPX_2_PARTITIONS</constant></entry>
+ <entry>2 coefficient partitions</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CID_MPEG_VIDEO_VPX_4_PARTITIONS</constant></entry>
+ <entry>4 coefficient partitions</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CID_MPEG_VIDEO_VPX_8_PARTITIONS</constant></entry>
+ <entry>8 coefficient partitions</entry>
+ </row>
+ </tbody>
+ </entrytbl>
+ </row>
+
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_VPX_IMD_DISABLE_4X4</constant></entry>
+ <entry>boolean</entry>
+ </row>
+ <row><entry spanname="descr">Setting this prevents intra 4x4 mode in the intra mode decision.</entry>
+ </row>
+
+ <row><entry></entry></row>
+ <row id="v4l2-vpx-num-ref-frames">
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_VPX_NUM_REF_FRAMES</constant></entry>
+ <entry>enum v4l2_vp8_num_ref_frames</entry>
+ </row>
+ <row><entry spanname="descr">The number of reference pictures for encoding P frames.
+Possible values are:</entry>
+ </row>
+ <row>
+ <entrytbl spanname="descr" cols="2">
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_CID_MPEG_VIDEO_VPX_1_REF_FRAME</constant></entry>
+ <entry>Last encoded frame will be searched</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CID_MPEG_VIDEO_VPX_2_REF_FRAME</constant></entry>
+ <entry>Two frames will be searched among the last encoded frame, the golden frame
+and the alternate reference (altref) frame. The encoder implementation will decide which two are chosen.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CID_MPEG_VIDEO_VPX_3_REF_FRAME</constant></entry>
+ <entry>The last encoded frame, the golden frame and the altref frame will be searched.</entry>
+ </row>
+ </tbody>
+ </entrytbl>
+ </row>
+
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_VPX_FILTER_LEVEL</constant></entry>
+ <entry>integer</entry>
+ </row>
+ <row><entry spanname="descr">Indicates the loop filter level. The adjustment of the loop
+filter level is done via a delta value against a baseline loop filter value.</entry>
+ </row>
+
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_VPX_FILTER_SHARPNESS</constant></entry>
+ <entry>integer</entry>
+ </row>
+ <row><entry spanname="descr">This parameter affects the loop filter. Anything above
+zero weakens the deblocking effect on the loop filter.</entry>
+ </row>
+
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_VPX_GOLDEN_FRAME_REF_PERIOD</constant></entry>
+ <entry>integer</entry>
+ </row>
+ <row><entry spanname="descr">Sets the refresh period for the golden frame. The period is defined
+in number of frames. For a value of 'n', every nth frame starting from the first key frame will be taken as a golden frame.
+For eg. for encoding sequence of 0, 1, 2, 3, 4, 5, 6, 7 where the golden frame refresh period is set as 4, the frames
+0, 4, 8 etc will be taken as the golden frames as frame 0 is always a key frame.</entry>
+ </row>
+
+ <row><entry></entry></row>
+ <row id="v4l2-vpx-golden-frame-sel">
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_VPX_GOLDEN_FRAME_SEL</constant></entry>
+ <entry>enum v4l2_vp8_golden_frame_sel</entry>
+ </row>
+ <row><entry spanname="descr">Selects the golden frame for encoding.
+Possible values are:</entry>
+ </row>
+ <row>
+ <entrytbl spanname="descr" cols="2">
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_CID_MPEG_VIDEO_VPX_GOLDEN_FRAME_USE_PREV</constant></entry>
+ <entry>Use the (n-2)th frame as a golden frame, current frame index being 'n'.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CID_MPEG_VIDEO_VPX_GOLDEN_FRAME_USE_REF_PERIOD</constant></entry>
+ <entry>Use the previous specific frame indicated by
+V4L2_CID_MPEG_VIDEO_VPX_GOLDEN_FRAME_REF_PERIOD as a golden frame.</entry>
+ </row>
+ </tbody>
+ </entrytbl>
+ </row>
+
+ <row><entry></entry></row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ </section>
</section>
<section id="camera-controls">
diff --git a/drivers/media/v4l2-core/v4l2-ctrls.c b/drivers/media/v4l2-core/v4l2-ctrls.c
index e03a2e8..c6dc1fd 100644
--- a/drivers/media/v4l2-core/v4l2-ctrls.c
+++ b/drivers/media/v4l2-core/v4l2-ctrls.c
@@ -424,6 +424,12 @@ const char * const *v4l2_ctrl_get_menu(u32 id)
NULL,
};
+ static const char * const vpx_golden_frame_sel[] = {
+ "Use Previous Frame",
+ "Use Previous Specific Frame",
+ NULL,
+ };
+
static const char * const flash_led_mode[] = {
"Off",
"Flash",
@@ -538,6 +544,8 @@ const char * const *v4l2_ctrl_get_menu(u32 id)
return mpeg_mpeg4_level;
case V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE:
return mpeg4_profile;
+ case V4L2_CID_MPEG_VIDEO_VPX_GOLDEN_FRAME_SEL:
+ return vpx_golden_frame_sel;
case V4L2_CID_JPEG_CHROMA_SUBSAMPLING:
return jpeg_chroma_subsampling;
case V4L2_CID_DV_TX_MODE:
@@ -552,13 +560,26 @@ const char * const *v4l2_ctrl_get_menu(u32 id)
}
EXPORT_SYMBOL(v4l2_ctrl_get_menu);
+#define __v4l2_qmenu_int_len(arr, len) ({ *(len) = ARRAY_SIZE(arr); arr; })
/*
* Returns NULL or an s64 type array containing the menu for given
* control ID. The total number of the menu items is returned in @len.
*/
const s64 const *v4l2_ctrl_get_int_menu(u32 id, u32 *len)
{
+ static const s64 const qmenu_int_vpx_num_partitions[] = {
+ 1, 2, 4, 8,
+ };
+
+ static const s64 const qmenu_int_vpx_num_ref_frames[] = {
+ 1, 2, 3,
+ };
+
switch (id) {
+ case V4L2_CID_MPEG_VIDEO_VPX_NUM_PARTITIONS:
+ return __v4l2_qmenu_int_len(qmenu_int_vpx_num_partitions, len);
+ case V4L2_CID_MPEG_VIDEO_VPX_NUM_REF_FRAMES:
+ return __v4l2_qmenu_int_len(qmenu_int_vpx_num_ref_frames, len);
default:
*len = 0;
return NULL;
@@ -614,9 +635,11 @@ const char *v4l2_ctrl_get_name(u32 id)
case V4L2_CID_ALPHA_COMPONENT: return "Alpha Component";
case V4L2_CID_COLORFX_CBCR: return "Color Effects, CbCr";
- /* MPEG controls */
+ /* Codec controls */
+ /* The MPEG controls are applicable to all codec controls
+ * and the 'MPEG' part of the define is historical */
/* Keep the order of the 'case's the same as in videodev2.h! */
- case V4L2_CID_MPEG_CLASS: return "MPEG Encoder Controls";
+ case V4L2_CID_MPEG_CLASS: return "Codec Controls";
case V4L2_CID_MPEG_STREAM_TYPE: return "Stream Type";
case V4L2_CID_MPEG_STREAM_PID_PMT: return "Stream PMT Program ID";
case V4L2_CID_MPEG_STREAM_PID_AUDIO: return "Stream Audio Program ID";
@@ -714,6 +737,15 @@ const char *v4l2_ctrl_get_name(u32 id)
case V4L2_CID_MPEG_VIDEO_VBV_DELAY: return "Initial Delay for VBV Control";
case V4L2_CID_MPEG_VIDEO_REPEAT_SEQ_HEADER: return "Repeat Sequence Header";
+ /* VPX controls */
+ case V4L2_CID_MPEG_VIDEO_VPX_NUM_PARTITIONS: return "VPX Number of Partitions";
+ case V4L2_CID_MPEG_VIDEO_VPX_IMD_DISABLE_4X4: return "VPX Intra Mode Decision Disable";
+ case V4L2_CID_MPEG_VIDEO_VPX_NUM_REF_FRAMES: return "VPX No. of Refs for P Frame";
+ case V4L2_CID_MPEG_VIDEO_VPX_FILTER_LEVEL: return "VPX Loop Filter Level Range";
+ case V4L2_CID_MPEG_VIDEO_VPX_FILTER_SHARPNESS: return "VPX Deblocking Effect Control";
+ case V4L2_CID_MPEG_VIDEO_VPX_GOLDEN_FRAME_REF_PERIOD: return "VPX Golden Frame Refresh Period";
+ case V4L2_CID_MPEG_VIDEO_VPX_GOLDEN_FRAME_SEL: return "VPX Golden Frame Indicator";
+
/* CAMERA controls */
/* Keep the order of the 'case's the same as in videodev2.h! */
case V4L2_CID_CAMERA_CLASS: return "Camera Controls";
@@ -928,6 +960,7 @@ void v4l2_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type,
case V4L2_CID_DV_RX_RGB_RANGE:
case V4L2_CID_TEST_PATTERN:
case V4L2_CID_TUNE_DEEMPHASIS:
+ case V4L2_CID_MPEG_VIDEO_VPX_GOLDEN_FRAME_SEL:
*type = V4L2_CTRL_TYPE_MENU;
break;
case V4L2_CID_LINK_FREQ:
@@ -939,6 +972,8 @@ void v4l2_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type,
break;
case V4L2_CID_ISO_SENSITIVITY:
case V4L2_CID_AUTO_EXPOSURE_BIAS:
+ case V4L2_CID_MPEG_VIDEO_VPX_NUM_PARTITIONS:
+ case V4L2_CID_MPEG_VIDEO_VPX_NUM_REF_FRAMES:
*type = V4L2_CTRL_TYPE_INTEGER_MENU;
break;
case V4L2_CID_USER_CLASS:
diff --git a/include/uapi/linux/v4l2-controls.h b/include/uapi/linux/v4l2-controls.h
index 69bd5bb..273a362 100644
--- a/include/uapi/linux/v4l2-controls.h
+++ b/include/uapi/linux/v4l2-controls.h
@@ -165,7 +165,9 @@ enum v4l2_colorfx {
#define V4L2_CID_MPEG_BASE (V4L2_CTRL_CLASS_MPEG | 0x900)
#define V4L2_CID_MPEG_CLASS (V4L2_CTRL_CLASS_MPEG | 1)
-/* MPEG streams, specific to multiplexed streams */
+/* MPEG streams, specific to multiplexed streams
+ * The MPEG controls are applicable to all codec controls
+ * and the 'MPEG' part of the define is historical */
#define V4L2_CID_MPEG_STREAM_TYPE (V4L2_CID_MPEG_BASE+0)
enum v4l2_mpeg_stream_type {
V4L2_MPEG_STREAM_TYPE_MPEG2_PS = 0, /* MPEG-2 program stream */
@@ -522,6 +524,33 @@ enum v4l2_mpeg_video_mpeg4_profile {
};
#define V4L2_CID_MPEG_VIDEO_MPEG4_QPEL (V4L2_CID_MPEG_BASE+407)
+/* Control IDs for VP8 streams
+ * Though VP8 is not part of MPEG, adding it here as MPEG class is
+ * already handling other video compression standards
+ */
+#define V4L2_CID_MPEG_VIDEO_VPX_NUM_PARTITIONS (V4L2_CID_MPEG_BASE+500)
+enum v4l2_vp8_num_partitions {
+ V4L2_CID_MPEG_VIDEO_VPX_1_PARTITION = 0,
+ V4L2_CID_MPEG_VIDEO_VPX_2_PARTITIONS = 1,
+ V4L2_CID_MPEG_VIDEO_VPX_4_PARTITIONS = 2,
+ V4L2_CID_MPEG_VIDEO_VPX_8_PARTITIONS = 3,
+};
+#define V4L2_CID_MPEG_VIDEO_VPX_IMD_DISABLE_4X4 (V4L2_CID_MPEG_BASE+501)
+#define V4L2_CID_MPEG_VIDEO_VPX_NUM_REF_FRAMES (V4L2_CID_MPEG_BASE+502)
+enum v4l2_vp8_num_ref_frames {
+ V4L2_CID_MPEG_VIDEO_VPX_1_REF_FRAME = 0,
+ V4L2_CID_MPEG_VIDEO_VPX_2_REF_FRAME = 1,
+ V4L2_CID_MPEG_VIDEO_VPX_3_REF_FRAME = 2,
+};
+#define V4L2_CID_MPEG_VIDEO_VPX_FILTER_LEVEL (V4L2_CID_MPEG_BASE+503)
+#define V4L2_CID_MPEG_VIDEO_VPX_FILTER_SHARPNESS (V4L2_CID_MPEG_BASE+504)
+#define V4L2_CID_MPEG_VIDEO_VPX_GOLDEN_FRAME_REF_PERIOD (V4L2_CID_MPEG_BASE+505)
+#define V4L2_CID_MPEG_VIDEO_VPX_GOLDEN_FRAME_SEL (V4L2_CID_MPEG_BASE+506)
+enum v4l2_vp8_golden_frame_sel {
+ V4L2_CID_MPEG_VIDEO_VPX_GOLDEN_FRAME_USE_PREV = 0,
+ V4L2_CID_MPEG_VIDEO_VPX_GOLDEN_FRAME_USE_REF_PERIOD = 1,
+};
+
/* MPEG-class control IDs specific to the CX2341x driver as defined by V4L2 */
#define V4L2_CID_MPEG_CX2341X_BASE (V4L2_CTRL_CLASS_MPEG | 0x1000)
#define V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE (V4L2_CID_MPEG_CX2341X_BASE+0)
@@ -590,7 +619,6 @@ enum v4l2_mpeg_mfc51_video_force_frame_type {
#define V4L2_CID_MPEG_MFC51_VIDEO_H264_ADAPTIVE_RC_STATIC (V4L2_CID_MPEG_MFC51_BASE+53)
#define V4L2_CID_MPEG_MFC51_VIDEO_H264_NUM_REF_PIC_FOR_P (V4L2_CID_MPEG_MFC51_BASE+54)
-
/* Camera class control IDs */
#define V4L2_CID_CAMERA_CLASS_BASE (V4L2_CTRL_CLASS_CAMERA | 0x900)
@@ -818,7 +846,6 @@ enum v4l2_jpeg_chroma_subsampling {
#define V4L2_CID_PIXEL_RATE (V4L2_CID_IMAGE_PROC_CLASS_BASE + 2)
#define V4L2_CID_TEST_PATTERN (V4L2_CID_IMAGE_PROC_CLASS_BASE + 3)
-
/* DV-class control IDs defined by V4L2 */
#define V4L2_CID_DV_CLASS_BASE (V4L2_CTRL_CLASS_DV | 0x900)
#define V4L2_CID_DV_CLASS (V4L2_CTRL_CLASS_DV | 1)
--
1.7.9.5
--
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