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Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media updates from Mauro Carvalho Chehab: - some V4L2 API updates needed by embedded devices - DVB API extensions for ATSC-MH delivery system, used in US for mobile TV - new tuners for fc0011/0012/0013 and tua9001 - a new dvb driver for af9033/9035 - a new ATSC-MH frontend (lg2160) - new remote controller keymaps - Removal of a few legacy webcam driver that got replaced by gspca on several kernel versions ago - a new driver for Exynos 4/5 webcams(s5pp fimc-lite) - a new webcam sensor driver (smiapp) - a new video input driver for embedded (sta2x1xx) - several improvements, fixes, cleanups, etc inside the drivers. Manually fix up conflicts due to err() -> dev_err() conversion in drivers/staging/media/easycap/easycap_main.c * 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (484 commits) [media] saa7134-cards: Remove a PCI entry added by mistake [media] radio-sf16fmi: add support for SF16-FMD [media] rc-loopback: remove duplicate line [media] patch for Asus My Cinema PS3-100 (1043:48cd) [media] au0828: Move the Kconfig knob under V4L_USB_DRIVERS [media] em28xx: simple comment fix [media] [resend] radio-sf16fmr2: add PnP support for SF16-FMD2 [media] smiapp: Use v4l2_ctrl_new_int_menu() instead of v4l2_ctrl_new_custom() [media] smiapp: Add support for 8-bit uncompressed formats [media] smiapp: Allow generic quirk registers [media] smiapp: Use non-binning limits if the binning limit is zero [media] smiapp: Initialise rval in smiapp_read_nvm() [media] smiapp: Round minimum pre_pll up rather than down in ip_clk_freq check [media] smiapp: Use 8-bit reads only before identifying the sensor [media] smiapp: Quirk for sensors that only do 8-bit reads [media] smiapp: Pass struct sensor to register writing commands instead of i2c_client [media] smiapp: Allow using external clock from the clock framework [media] zl10353: change .read_snr() to report SNR as a 0.1 dB [media] media: add support to gspca/pac7302.c for 093a:2627 (Genius FaceCam 300) [media] m88rs2000 - only flip bit 2 on reg 0x70 on 16th try ...
This commit is contained in:
Linus Torvalds
@@ -70,6 +70,8 @@ IOCTLS = \
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VIDIOC_SUBDEV_ENUM_MBUS_CODE \
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VIDIOC_SUBDEV_ENUM_FRAME_SIZE \
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VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL \
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VIDIOC_SUBDEV_G_SELECTION \
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VIDIOC_SUBDEV_S_SELECTION \
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TYPES = \
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$(shell perl -ne 'print "$$1 " if /^typedef\s+[^\s]+\s+([^\s]+)\;/' $(srctree)/include/linux/videodev2.h) \
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@@ -193,7 +195,7 @@ DVB_DOCUMENTED = \
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#
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install_media_images = \
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$(Q)cp $(OBJIMGFILES) $(MEDIA_OBJ_DIR)/media_api
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$(Q)cp $(OBJIMGFILES) $(MEDIA_SRC_DIR)/v4l/*.svg $(MEDIA_OBJ_DIR)/media_api
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$(MEDIA_OBJ_DIR)/%: $(MEDIA_SRC_DIR)/%.b64
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$(Q)base64 -d $< >$@
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@@ -531,6 +531,139 @@ typedef enum fe_delivery_system {
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here are referring to what can be found in the TMCC-structure -
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independent of the mode.</para>
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</section>
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<section id="DTV-ATSCMH-FIC-VER">
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<title><constant>DTV_ATSCMH_FIC_VER</constant></title>
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<para>Version number of the FIC (Fast Information Channel) signaling data.</para>
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<para>FIC is used for relaying information to allow rapid service acquisition by the receiver.</para>
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<para>Possible values: 0, 1, 2, 3, ..., 30, 31</para>
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</section>
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<section id="DTV-ATSCMH-PARADE-ID">
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<title><constant>DTV_ATSCMH_PARADE_ID</constant></title>
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<para>Parade identification number</para>
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<para>A parade is a collection of up to eight MH groups, conveying one or two ensembles.</para>
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<para>Possible values: 0, 1, 2, 3, ..., 126, 127</para>
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</section>
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<section id="DTV-ATSCMH-NOG">
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<title><constant>DTV_ATSCMH_NOG</constant></title>
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<para>Number of MH groups per MH subframe for a designated parade.</para>
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<para>Possible values: 1, 2, 3, 4, 5, 6, 7, 8</para>
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</section>
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<section id="DTV-ATSCMH-TNOG">
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<title><constant>DTV_ATSCMH_TNOG</constant></title>
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<para>Total number of MH groups including all MH groups belonging to all MH parades in one MH subframe.</para>
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<para>Possible values: 0, 1, 2, 3, ..., 30, 31</para>
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</section>
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<section id="DTV-ATSCMH-SGN">
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<title><constant>DTV_ATSCMH_SGN</constant></title>
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<para>Start group number.</para>
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<para>Possible values: 0, 1, 2, 3, ..., 14, 15</para>
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</section>
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<section id="DTV-ATSCMH-PRC">
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<title><constant>DTV_ATSCMH_PRC</constant></title>
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<para>Parade repetition cycle.</para>
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<para>Possible values: 1, 2, 3, 4, 5, 6, 7, 8</para>
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</section>
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<section id="DTV-ATSCMH-RS-FRAME-MODE">
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<title><constant>DTV_ATSCMH_RS_FRAME_MODE</constant></title>
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<para>RS frame mode.</para>
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<para>Possible values are:</para>
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<programlisting>
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typedef enum atscmh_rs_frame_mode {
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ATSCMH_RSFRAME_PRI_ONLY = 0,
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ATSCMH_RSFRAME_PRI_SEC = 1,
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} atscmh_rs_frame_mode_t;
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</programlisting>
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</section>
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<section id="DTV-ATSCMH-RS-FRAME-ENSEMBLE">
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<title><constant>DTV_ATSCMH_RS_FRAME_ENSEMBLE</constant></title>
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<para>RS frame ensemble.</para>
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<para>Possible values are:</para>
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<programlisting>
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typedef enum atscmh_rs_frame_ensemble {
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ATSCMH_RSFRAME_ENS_PRI = 0,
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ATSCMH_RSFRAME_ENS_SEC = 1,
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} atscmh_rs_frame_ensemble_t;
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</programlisting>
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</section>
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<section id="DTV-ATSCMH-RS-CODE-MODE-PRI">
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<title><constant>DTV_ATSCMH_RS_CODE_MODE_PRI</constant></title>
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<para>RS code mode (primary).</para>
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<para>Possible values are:</para>
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<programlisting>
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typedef enum atscmh_rs_code_mode {
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ATSCMH_RSCODE_211_187 = 0,
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ATSCMH_RSCODE_223_187 = 1,
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ATSCMH_RSCODE_235_187 = 2,
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} atscmh_rs_code_mode_t;
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</programlisting>
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</section>
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<section id="DTV-ATSCMH-RS-CODE-MODE-SEC">
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<title><constant>DTV_ATSCMH_RS_CODE_MODE_SEC</constant></title>
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<para>RS code mode (secondary).</para>
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<para>Possible values are:</para>
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<programlisting>
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typedef enum atscmh_rs_code_mode {
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ATSCMH_RSCODE_211_187 = 0,
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ATSCMH_RSCODE_223_187 = 1,
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ATSCMH_RSCODE_235_187 = 2,
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} atscmh_rs_code_mode_t;
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</programlisting>
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</section>
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<section id="DTV-ATSCMH-SCCC-BLOCK-MODE">
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<title><constant>DTV_ATSCMH_SCCC_BLOCK_MODE</constant></title>
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<para>Series Concatenated Convolutional Code Block Mode.</para>
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<para>Possible values are:</para>
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<programlisting>
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typedef enum atscmh_sccc_block_mode {
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ATSCMH_SCCC_BLK_SEP = 0,
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ATSCMH_SCCC_BLK_COMB = 1,
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} atscmh_sccc_block_mode_t;
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</programlisting>
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</section>
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<section id="DTV-ATSCMH-SCCC-CODE-MODE-A">
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<title><constant>DTV_ATSCMH_SCCC_CODE_MODE_A</constant></title>
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<para>Series Concatenated Convolutional Code Rate.</para>
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<para>Possible values are:</para>
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<programlisting>
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typedef enum atscmh_sccc_code_mode {
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ATSCMH_SCCC_CODE_HLF = 0,
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ATSCMH_SCCC_CODE_QTR = 1,
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} atscmh_sccc_code_mode_t;
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</programlisting>
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</section>
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<section id="DTV-ATSCMH-SCCC-CODE-MODE-B">
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<title><constant>DTV_ATSCMH_SCCC_CODE_MODE_B</constant></title>
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<para>Series Concatenated Convolutional Code Rate.</para>
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<para>Possible values are:</para>
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<programlisting>
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typedef enum atscmh_sccc_code_mode {
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ATSCMH_SCCC_CODE_HLF = 0,
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ATSCMH_SCCC_CODE_QTR = 1,
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} atscmh_sccc_code_mode_t;
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</programlisting>
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</section>
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<section id="DTV-ATSCMH-SCCC-CODE-MODE-C">
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<title><constant>DTV_ATSCMH_SCCC_CODE_MODE_C</constant></title>
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<para>Series Concatenated Convolutional Code Rate.</para>
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<para>Possible values are:</para>
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<programlisting>
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typedef enum atscmh_sccc_code_mode {
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ATSCMH_SCCC_CODE_HLF = 0,
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ATSCMH_SCCC_CODE_QTR = 1,
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} atscmh_sccc_code_mode_t;
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</programlisting>
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</section>
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<section id="DTV-ATSCMH-SCCC-CODE-MODE-D">
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<title><constant>DTV_ATSCMH_SCCC_CODE_MODE_D</constant></title>
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<para>Series Concatenated Convolutional Code Rate.</para>
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<para>Possible values are:</para>
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<programlisting>
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typedef enum atscmh_sccc_code_mode {
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ATSCMH_SCCC_CODE_HLF = 0,
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ATSCMH_SCCC_CODE_QTR = 1,
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} atscmh_sccc_code_mode_t;
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</programlisting>
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</section>
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</section>
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<section id="DTV-API-VERSION">
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<title><constant>DTV_API_VERSION</constant></title>
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@@ -774,6 +907,33 @@ typedef enum fe_hierarchy {
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<listitem><para><link linkend="DTV-BANDWIDTH-HZ"><constant>DTV_BANDWIDTH_HZ</constant></link></para></listitem>
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</itemizedlist>
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</section>
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<section id="atscmh-params">
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<title>ATSC-MH delivery system</title>
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<para>The following parameters are valid for ATSC-MH:</para>
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<itemizedlist mark='opencircle'>
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<listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem>
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<listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem>
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<listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem>
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<listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem>
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<listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem>
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<listitem><para><link linkend="DTV-BANDWIDTH-HZ"><constant>DTV_BANDWIDTH_HZ</constant></link></para></listitem>
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<listitem><para><link linkend="DTV-ATSCMH-FIC-VER"><constant>DTV_ATSCMH_FIC_VER</constant></link></para></listitem>
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<listitem><para><link linkend="DTV-ATSCMH-PARADE-ID"><constant>DTV_ATSCMH_PARADE_ID</constant></link></para></listitem>
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<listitem><para><link linkend="DTV-ATSCMH-NOG"><constant>DTV_ATSCMH_NOG</constant></link></para></listitem>
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<listitem><para><link linkend="DTV-ATSCMH-TNOG"><constant>DTV_ATSCMH_TNOG</constant></link></para></listitem>
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<listitem><para><link linkend="DTV-ATSCMH-SGN"><constant>DTV_ATSCMH_SGN</constant></link></para></listitem>
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<listitem><para><link linkend="DTV-ATSCMH-PRC"><constant>DTV_ATSCMH_PRC</constant></link></para></listitem>
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<listitem><para><link linkend="DTV-ATSCMH-RS-FRAME-MODE"><constant>DTV_ATSCMH_RS_FRAME_MODE</constant></link></para></listitem>
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<listitem><para><link linkend="DTV-ATSCMH-RS-FRAME-ENSEMBLE"><constant>DTV_ATSCMH_RS_FRAME_ENSEMBLE</constant></link></para></listitem>
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<listitem><para><link linkend="DTV-ATSCMH-CODE-MODE-PRI"><constant>DTV_ATSCMH_CODE_MODE_PRI</constant></link></para></listitem>
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<listitem><para><link linkend="DTV-ATSCMH-CODE-MODE-SEC"><constant>DTV_ATSCMH_CODE_MODE_SEC</constant></link></para></listitem>
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<listitem><para><link linkend="DTV-ATSCMH-SCCC-BLOCK-MODE"><constant>DTV_ATSCMH_SCCC_BLOCK_MODE</constant></link></para></listitem>
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<listitem><para><link linkend="DTV-ATSCMH-SCCC-CODE_MODE-A"><constant>DTV_ATSCMH_SCCC_CODE_MODE_A</constant></link></para></listitem>
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<listitem><para><link linkend="DTV-ATSCMH-SCCC-CODE_MODE-B"><constant>DTV_ATSCMH_SCCC_CODE_MODE_B</constant></link></para></listitem>
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<listitem><para><link linkend="DTV-ATSCMH-SCCC-CODE_MODE-C"><constant>DTV_ATSCMH_SCCC_CODE_MODE_C</constant></link></para></listitem>
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<listitem><para><link linkend="DTV-ATSCMH-SCCC-CODE_MODE-D"><constant>DTV_ATSCMH_SCCC_CODE_MODE_D</constant></link></para></listitem>
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</itemizedlist>
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</section>
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</section>
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<section id="frontend-property-cable-systems">
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<title>Properties used on cable delivery systems</title>
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@@ -197,4 +197,33 @@ in the frequency range from 87,5 to 108,0 MHz</title>
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<title>NTSC-4: United States RBDS Standard</title>
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</biblioentry>
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<biblioentry id="iso12232">
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<abbrev>ISO 12232:2006</abbrev>
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<authorgroup>
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<corpauthor>International Organization for Standardization
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(<ulink url="http://www.iso.org">http://www.iso.org</ulink>)</corpauthor>
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</authorgroup>
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<title>Photography — Digital still cameras — Determination
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of exposure index, ISO speed ratings, standard output sensitivity, and
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recommended exposure index</title>
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</biblioentry>
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<biblioentry id="cea861">
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<abbrev>CEA-861-E</abbrev>
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<authorgroup>
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<corpauthor>Consumer Electronics Association
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(<ulink url="http://www.ce.org">http://www.ce.org</ulink>)</corpauthor>
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</authorgroup>
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<title>A DTV Profile for Uncompressed High Speed Digital Interfaces</title>
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</biblioentry>
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<biblioentry id="vesadmt">
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<abbrev>VESA DMT</abbrev>
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<authorgroup>
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<corpauthor>Video Electronics Standards Association
|
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(<ulink url="http://www.vesa.org">http://www.vesa.org</ulink>)</corpauthor>
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</authorgroup>
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<title>VESA and Industry Standards and Guidelines for Computer Display Monitor Timing (DMT)</title>
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</biblioentry>
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|
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</bibliography>
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@@ -724,41 +724,49 @@ if (-1 == ioctl (fd, &VIDIOC-S-STD;, &std_id)) {
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}
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</programlisting>
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</example>
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</section>
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<section id="dv-timings">
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<title>Digital Video (DV) Timings</title>
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<para>
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The video standards discussed so far has been dealing with Analog TV and the
|
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The video standards discussed so far have been dealing with Analog TV and the
|
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corresponding video timings. Today there are many more different hardware interfaces
|
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such as High Definition TV interfaces (HDMI), VGA, DVI connectors etc., that carry
|
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video signals and there is a need to extend the API to select the video timings
|
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for these interfaces. Since it is not possible to extend the &v4l2-std-id; due to
|
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the limited bits available, a new set of IOCTLs is added to set/get video timings at
|
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the limited bits available, a new set of IOCTLs was added to set/get video timings at
|
||||
the input and output: </para><itemizedlist>
|
||||
<listitem>
|
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<para>DV Presets: Digital Video (DV) presets. These are IDs representing a
|
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<para>DV Timings: This will allow applications to define detailed
|
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video timings for the interface. This includes parameters such as width, height,
|
||||
polarities, frontporch, backporch etc. The <filename>linux/v4l2-dv-timings.h</filename>
|
||||
header can be used to get the timings of the formats in the <xref linkend="cea861" /> and
|
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<xref linkend="vesadmt" /> standards.
|
||||
</para>
|
||||
</listitem>
|
||||
<listitem>
|
||||
<para>DV Presets: Digital Video (DV) presets (<emphasis role="bold">deprecated</emphasis>).
|
||||
These are IDs representing a
|
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video timing at the input/output. Presets are pre-defined timings implemented
|
||||
by the hardware according to video standards. A __u32 data type is used to represent
|
||||
a preset unlike the bit mask that is used in &v4l2-std-id; allowing future extensions
|
||||
to support as many different presets as needed.</para>
|
||||
</listitem>
|
||||
<listitem>
|
||||
<para>Custom DV Timings: This will allow applications to define more detailed
|
||||
custom video timings for the interface. This includes parameters such as width, height,
|
||||
polarities, frontporch, backporch etc.
|
||||
</para>
|
||||
to support as many different presets as needed. This API is deprecated in favor of the DV Timings
|
||||
API.</para>
|
||||
</listitem>
|
||||
</itemizedlist>
|
||||
<para>To enumerate and query the attributes of the DV timings supported by a device,
|
||||
applications use the &VIDIOC-ENUM-DV-TIMINGS; and &VIDIOC-DV-TIMINGS-CAP; ioctls.
|
||||
To set DV timings for the device, applications use the
|
||||
&VIDIOC-S-DV-TIMINGS; ioctl and to get current DV timings they use the
|
||||
&VIDIOC-G-DV-TIMINGS; ioctl. To detect the DV timings as seen by the video receiver applications
|
||||
use the &VIDIOC-QUERY-DV-TIMINGS; ioctl.</para>
|
||||
<para>To enumerate and query the attributes of DV presets supported by a device,
|
||||
applications use the &VIDIOC-ENUM-DV-PRESETS; ioctl. To get the current DV preset,
|
||||
applications use the &VIDIOC-G-DV-PRESET; ioctl and to set a preset they use the
|
||||
&VIDIOC-S-DV-PRESET; ioctl.</para>
|
||||
<para>To set custom DV timings for the device, applications use the
|
||||
&VIDIOC-S-DV-TIMINGS; ioctl and to get current custom DV timings they use the
|
||||
&VIDIOC-G-DV-TIMINGS; ioctl.</para>
|
||||
&VIDIOC-S-DV-PRESET; ioctl. To detect the preset as seen by the video receiver applications
|
||||
use the &VIDIOC-QUERY-DV-PRESET; ioctl.</para>
|
||||
<para>Applications can make use of the <xref linkend="input-capabilities" /> and
|
||||
<xref linkend="output-capabilities"/> flags to decide what ioctls are available to set the
|
||||
video timings for the device.</para>
|
||||
</section>
|
||||
</section>
|
||||
|
||||
&sub-controls;
|
||||
|
||||
@@ -2407,6 +2407,54 @@ details.</para>
|
||||
<para>Added <link linkend="jpeg-controls">JPEG compression control
|
||||
class</link>.</para>
|
||||
</listitem>
|
||||
<listitem>
|
||||
<para>Extended the DV Timings API:
|
||||
&VIDIOC-ENUM-DV-TIMINGS;, &VIDIOC-QUERY-DV-TIMINGS; and
|
||||
&VIDIOC-DV-TIMINGS-CAP;.</para>
|
||||
</listitem>
|
||||
</orderedlist>
|
||||
</section>
|
||||
|
||||
<section>
|
||||
<title>V4L2 in Linux 3.5</title>
|
||||
<orderedlist>
|
||||
<listitem>
|
||||
<para>Added integer menus, the new type will be
|
||||
V4L2_CTRL_TYPE_INTEGER_MENU.</para>
|
||||
</listitem>
|
||||
<listitem>
|
||||
<para>Added selection API for V4L2 subdev interface:
|
||||
&VIDIOC-SUBDEV-G-SELECTION; and
|
||||
&VIDIOC-SUBDEV-S-SELECTION;.</para>
|
||||
</listitem>
|
||||
<listitem>
|
||||
<para> Added <constant>V4L2_COLORFX_ANTIQUE</constant>,
|
||||
<constant>V4L2_COLORFX_ART_FREEZE</constant>,
|
||||
<constant>V4L2_COLORFX_AQUA</constant>,
|
||||
<constant>V4L2_COLORFX_SILHOUETTE</constant>,
|
||||
<constant>V4L2_COLORFX_SOLARIZATION</constant>,
|
||||
<constant>V4L2_COLORFX_VIVID</constant> and
|
||||
<constant>V4L2_COLORFX_ARBITRARY_CBCR</constant> menu items
|
||||
to the <constant>V4L2_CID_COLORFX</constant> control.</para>
|
||||
</listitem>
|
||||
<listitem>
|
||||
<para> Added <constant>V4L2_CID_COLORFX_CBCR</constant> control.</para>
|
||||
</listitem>
|
||||
<listitem>
|
||||
<para> Added camera controls <constant>V4L2_CID_AUTO_EXPOSURE_BIAS</constant>,
|
||||
<constant>V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE</constant>,
|
||||
<constant>V4L2_CID_IMAGE_STABILIZATION</constant>,
|
||||
<constant>V4L2_CID_ISO_SENSITIVITY</constant>,
|
||||
<constant>V4L2_CID_ISO_SENSITIVITY_AUTO</constant>,
|
||||
<constant>V4L2_CID_EXPOSURE_METERING</constant>,
|
||||
<constant>V4L2_CID_SCENE_MODE</constant>,
|
||||
<constant>V4L2_CID_3A_LOCK</constant>,
|
||||
<constant>V4L2_CID_AUTO_FOCUS_START</constant>,
|
||||
<constant>V4L2_CID_AUTO_FOCUS_STOP</constant>,
|
||||
<constant>V4L2_CID_AUTO_FOCUS_STATUS</constant> and
|
||||
<constant>V4L2_CID_AUTO_FOCUS_RANGE</constant>.
|
||||
</para>
|
||||
</listitem>
|
||||
</orderedlist>
|
||||
</section>
|
||||
|
||||
@@ -2505,6 +2553,10 @@ and may change in the future.</para>
|
||||
</listitem>
|
||||
<listitem>
|
||||
<para>&VIDIOC-ENCODER-CMD; and &VIDIOC-TRY-ENCODER-CMD;
|
||||
ioctls.</para>
|
||||
</listitem>
|
||||
<listitem>
|
||||
<para>&VIDIOC-DECODER-CMD; and &VIDIOC-TRY-DECODER-CMD;
|
||||
ioctls.</para>
|
||||
</listitem>
|
||||
<listitem>
|
||||
@@ -2514,6 +2566,10 @@ ioctls.</para>
|
||||
<listitem>
|
||||
<para>&VIDIOC-DBG-G-CHIP-IDENT; ioctl.</para>
|
||||
</listitem>
|
||||
<listitem>
|
||||
<para>&VIDIOC-ENUM-DV-TIMINGS;, &VIDIOC-QUERY-DV-TIMINGS; and
|
||||
&VIDIOC-DV-TIMINGS-CAP; ioctls.</para>
|
||||
</listitem>
|
||||
<listitem>
|
||||
<para>Flash API. <xref linkend="flash-controls" /></para>
|
||||
</listitem>
|
||||
@@ -2523,6 +2579,14 @@ ioctls.</para>
|
||||
<listitem>
|
||||
<para>Selection API. <xref linkend="selection-api" /></para>
|
||||
</listitem>
|
||||
<listitem>
|
||||
<para>Sub-device selection API: &VIDIOC-SUBDEV-G-SELECTION;
|
||||
and &VIDIOC-SUBDEV-S-SELECTION; ioctls.</para>
|
||||
</listitem>
|
||||
<listitem>
|
||||
<para><link linkend="v4l2-auto-focus-area"><constant>
|
||||
V4L2_CID_AUTO_FOCUS_AREA</constant></link> control.</para>
|
||||
</listitem>
|
||||
</itemizedlist>
|
||||
</section>
|
||||
|
||||
@@ -2538,6 +2602,17 @@ interfaces and should not be implemented in new drivers.</para>
|
||||
<constant>VIDIOC_S_MPEGCOMP</constant> ioctls. Use Extended Controls,
|
||||
<xref linkend="extended-controls" />.</para>
|
||||
</listitem>
|
||||
<listitem>
|
||||
<para>&VIDIOC-G-DV-PRESET;, &VIDIOC-S-DV-PRESET;, &VIDIOC-ENUM-DV-PRESETS; and
|
||||
&VIDIOC-QUERY-DV-PRESET; ioctls. Use the DV Timings API (<xref linkend="dv-timings" />).</para>
|
||||
</listitem>
|
||||
<listitem>
|
||||
<para><constant>VIDIOC_SUBDEV_G_CROP</constant> and
|
||||
<constant>VIDIOC_SUBDEV_S_CROP</constant> ioctls. Use
|
||||
<constant>VIDIOC_SUBDEV_G_SELECTION</constant> and
|
||||
<constant>VIDIOC_SUBDEV_S_SELECTION</constant>, <xref
|
||||
linkend="vidioc-subdev-g-selection" />.</para>
|
||||
</listitem>
|
||||
</itemizedlist>
|
||||
</section>
|
||||
</section>
|
||||
|
||||
File diff suppressed because it is too large
Load Diff
@@ -76,11 +76,12 @@
|
||||
<wordasword>format</wordasword> means the combination of media bus data
|
||||
format, frame width and frame height.</para></note>
|
||||
|
||||
<para>Image formats are typically negotiated on video capture and output
|
||||
devices using the <link linkend="crop">cropping and scaling</link> ioctls.
|
||||
The driver is responsible for configuring every block in the video pipeline
|
||||
according to the requested format at the pipeline input and/or
|
||||
output.</para>
|
||||
<para>Image formats are typically negotiated on video capture and
|
||||
output devices using the format and <link
|
||||
linkend="vidioc-subdev-g-selection">selection</link> ioctls. The
|
||||
driver is responsible for configuring every block in the video
|
||||
pipeline according to the requested format at the pipeline input
|
||||
and/or output.</para>
|
||||
|
||||
<para>For complex devices, such as often found in embedded systems,
|
||||
identical image sizes at the output of a pipeline can be achieved using
|
||||
@@ -276,11 +277,11 @@
|
||||
</section>
|
||||
|
||||
<section>
|
||||
<title>Cropping and scaling</title>
|
||||
<title>Selections: cropping, scaling and composition</title>
|
||||
|
||||
<para>Many sub-devices support cropping frames on their input or output
|
||||
pads (or possible even on both). Cropping is used to select the area of
|
||||
interest in an image, typically on a video sensor or video decoder. It can
|
||||
interest in an image, typically on an image sensor or a video decoder. It can
|
||||
also be used as part of digital zoom implementations to select the area of
|
||||
the image that will be scaled up.</para>
|
||||
|
||||
@@ -288,26 +289,179 @@
|
||||
&v4l2-rect; by the coordinates of the top left corner and the rectangle
|
||||
size. Both the coordinates and sizes are expressed in pixels.</para>
|
||||
|
||||
<para>The crop rectangle is retrieved and set using the
|
||||
&VIDIOC-SUBDEV-G-CROP; and &VIDIOC-SUBDEV-S-CROP; ioctls. Like for pad
|
||||
formats, drivers store try and active crop rectangles. The format
|
||||
negotiation mechanism applies to crop settings as well.</para>
|
||||
<para>As for pad formats, drivers store try and active
|
||||
rectangles for the selection targets of ACTUAL type <xref
|
||||
linkend="v4l2-subdev-selection-targets">.</xref></para>
|
||||
|
||||
<para>On input pads, cropping is applied relatively to the current pad
|
||||
format. The pad format represents the image size as received by the
|
||||
sub-device from the previous block in the pipeline, and the crop rectangle
|
||||
represents the sub-image that will be transmitted further inside the
|
||||
sub-device for processing. The crop rectangle be entirely containted
|
||||
inside the input image size.</para>
|
||||
<para>On sink pads, cropping is applied relative to the
|
||||
current pad format. The pad format represents the image size as
|
||||
received by the sub-device from the previous block in the
|
||||
pipeline, and the crop rectangle represents the sub-image that
|
||||
will be transmitted further inside the sub-device for
|
||||
processing.</para>
|
||||
|
||||
<para>Input crop rectangle are reset to their default value when the input
|
||||
image format is modified. Drivers should use the input image size as the
|
||||
crop rectangle default value, but hardware requirements may prevent this.
|
||||
</para>
|
||||
<para>The scaling operation changes the size of the image by
|
||||
scaling it to new dimensions. The scaling ratio isn't specified
|
||||
explicitly, but is implied from the original and scaled image
|
||||
sizes. Both sizes are represented by &v4l2-rect;.</para>
|
||||
|
||||
<para>Cropping behaviour on output pads is not defined.</para>
|
||||
<para>Scaling support is optional. When supported by a subdev,
|
||||
the crop rectangle on the subdev's sink pad is scaled to the
|
||||
size configured using the &VIDIOC-SUBDEV-S-SELECTION; IOCTL
|
||||
using <constant>V4L2_SUBDEV_SEL_COMPOSE_ACTUAL</constant>
|
||||
selection target on the same pad. If the subdev supports scaling
|
||||
but not composing, the top and left values are not used and must
|
||||
always be set to zero.</para>
|
||||
|
||||
<para>On source pads, cropping is similar to sink pads, with the
|
||||
exception that the source size from which the cropping is
|
||||
performed, is the COMPOSE rectangle on the sink pad. In both
|
||||
sink and source pads, the crop rectangle must be entirely
|
||||
contained inside the source image size for the crop
|
||||
operation.</para>
|
||||
|
||||
<para>The drivers should always use the closest possible
|
||||
rectangle the user requests on all selection targets, unless
|
||||
specifically told otherwise.
|
||||
<constant>V4L2_SUBDEV_SEL_FLAG_SIZE_GE</constant> and
|
||||
<constant>V4L2_SUBDEV_SEL_FLAG_SIZE_LE</constant> flags may be
|
||||
used to round the image size either up or down. <xref
|
||||
linkend="v4l2-subdev-selection-flags"></xref></para>
|
||||
</section>
|
||||
|
||||
<section>
|
||||
<title>Types of selection targets</title>
|
||||
|
||||
<section>
|
||||
<title>ACTUAL targets</title>
|
||||
|
||||
<para>ACTUAL targets reflect the actual hardware configuration
|
||||
at any point of time. There is a BOUNDS target
|
||||
corresponding to every ACTUAL.</para>
|
||||
</section>
|
||||
|
||||
<section>
|
||||
<title>BOUNDS targets</title>
|
||||
|
||||
<para>BOUNDS targets is the smallest rectangle that contains
|
||||
all valid ACTUAL rectangles. It may not be possible to set the
|
||||
ACTUAL rectangle as large as the BOUNDS rectangle, however.
|
||||
This may be because e.g. a sensor's pixel array is not
|
||||
rectangular but cross-shaped or round. The maximum size may
|
||||
also be smaller than the BOUNDS rectangle.</para>
|
||||
</section>
|
||||
|
||||
</section>
|
||||
|
||||
<section>
|
||||
<title>Order of configuration and format propagation</title>
|
||||
|
||||
<para>Inside subdevs, the order of image processing steps will
|
||||
always be from the sink pad towards the source pad. This is also
|
||||
reflected in the order in which the configuration must be
|
||||
performed by the user: the changes made will be propagated to
|
||||
any subsequent stages. If this behaviour is not desired, the
|
||||
user must set
|
||||
<constant>V4L2_SUBDEV_SEL_FLAG_KEEP_CONFIG</constant> flag. This
|
||||
flag causes no propagation of the changes are allowed in any
|
||||
circumstances. This may also cause the accessed rectangle to be
|
||||
adjusted by the driver, depending on the properties of the
|
||||
underlying hardware.</para>
|
||||
|
||||
<para>The coordinates to a step always refer to the actual size
|
||||
of the previous step. The exception to this rule is the source
|
||||
compose rectangle, which refers to the sink compose bounds
|
||||
rectangle --- if it is supported by the hardware.</para>
|
||||
|
||||
<orderedlist>
|
||||
<listitem>Sink pad format. The user configures the sink pad
|
||||
format. This format defines the parameters of the image the
|
||||
entity receives through the pad for further processing.</listitem>
|
||||
|
||||
<listitem>Sink pad actual crop selection. The sink pad crop
|
||||
defines the crop performed to the sink pad format.</listitem>
|
||||
|
||||
<listitem>Sink pad actual compose selection. The size of the
|
||||
sink pad compose rectangle defines the scaling ratio compared
|
||||
to the size of the sink pad crop rectangle. The location of
|
||||
the compose rectangle specifies the location of the actual
|
||||
sink compose rectangle in the sink compose bounds
|
||||
rectangle.</listitem>
|
||||
|
||||
<listitem>Source pad actual crop selection. Crop on the source
|
||||
pad defines crop performed to the image in the sink compose
|
||||
bounds rectangle.</listitem>
|
||||
|
||||
<listitem>Source pad format. The source pad format defines the
|
||||
output pixel format of the subdev, as well as the other
|
||||
parameters with the exception of the image width and height.
|
||||
Width and height are defined by the size of the source pad
|
||||
actual crop selection.</listitem>
|
||||
</orderedlist>
|
||||
|
||||
<para>Accessing any of the above rectangles not supported by the
|
||||
subdev will return <constant>EINVAL</constant>. Any rectangle
|
||||
referring to a previous unsupported rectangle coordinates will
|
||||
instead refer to the previous supported rectangle. For example,
|
||||
if sink crop is not supported, the compose selection will refer
|
||||
to the sink pad format dimensions instead.</para>
|
||||
|
||||
<figure id="subdev-image-processing-crop">
|
||||
<title>Image processing in subdevs: simple crop example</title>
|
||||
<mediaobject>
|
||||
<imageobject>
|
||||
<imagedata fileref="subdev-image-processing-crop.svg"
|
||||
format="SVG" scale="200" />
|
||||
</imageobject>
|
||||
</mediaobject>
|
||||
</figure>
|
||||
|
||||
<para>In the above example, the subdev supports cropping on its
|
||||
sink pad. To configure it, the user sets the media bus format on
|
||||
the subdev's sink pad. Now the actual crop rectangle can be set
|
||||
on the sink pad --- the location and size of this rectangle
|
||||
reflect the location and size of a rectangle to be cropped from
|
||||
the sink format. The size of the sink crop rectangle will also
|
||||
be the size of the format of the subdev's source pad.</para>
|
||||
|
||||
<figure id="subdev-image-processing-scaling-multi-source">
|
||||
<title>Image processing in subdevs: scaling with multiple sources</title>
|
||||
<mediaobject>
|
||||
<imageobject>
|
||||
<imagedata fileref="subdev-image-processing-scaling-multi-source.svg"
|
||||
format="SVG" scale="200" />
|
||||
</imageobject>
|
||||
</mediaobject>
|
||||
</figure>
|
||||
|
||||
<para>In this example, the subdev is capable of first cropping,
|
||||
then scaling and finally cropping for two source pads
|
||||
individually from the resulting scaled image. The location of
|
||||
the scaled image in the cropped image is ignored in sink compose
|
||||
target. Both of the locations of the source crop rectangles
|
||||
refer to the sink scaling rectangle, independently cropping an
|
||||
area at location specified by the source crop rectangle from
|
||||
it.</para>
|
||||
|
||||
<figure id="subdev-image-processing-full">
|
||||
<title>Image processing in subdevs: scaling and composition
|
||||
with multiple sinks and sources</title>
|
||||
<mediaobject>
|
||||
<imageobject>
|
||||
<imagedata fileref="subdev-image-processing-full.svg"
|
||||
format="SVG" scale="200" />
|
||||
</imageobject>
|
||||
</mediaobject>
|
||||
</figure>
|
||||
|
||||
<para>The subdev driver supports two sink pads and two source
|
||||
pads. The images from both of the sink pads are individually
|
||||
cropped, then scaled and further composed on the composition
|
||||
bounds rectangle. From that, two independent streams are cropped
|
||||
and sent out of the subdev from the source pads.</para>
|
||||
|
||||
</section>
|
||||
|
||||
</section>
|
||||
|
||||
&sub-subdev-formats;
|
||||
|
||||
@@ -543,12 +543,13 @@ and can range from zero to the number of buffers allocated
|
||||
with the &VIDIOC-REQBUFS; ioctl (&v4l2-requestbuffers; <structfield>count</structfield>) minus one.</entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry>&v4l2-buf-type;</entry>
|
||||
<entry>__u32</entry>
|
||||
<entry><structfield>type</structfield></entry>
|
||||
<entry></entry>
|
||||
<entry>Type of the buffer, same as &v4l2-format;
|
||||
<structfield>type</structfield> or &v4l2-requestbuffers;
|
||||
<structfield>type</structfield>, set by the application.</entry>
|
||||
<structfield>type</structfield>, set by the application. See <xref
|
||||
linkend="v4l2-buf-type" /></entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry>__u32</entry>
|
||||
@@ -568,7 +569,7 @@ refers to an input stream, applications when an output stream.</entry>
|
||||
linkend="buffer-flags" />.</entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry>&v4l2-field;</entry>
|
||||
<entry>__u32</entry>
|
||||
<entry><structfield>field</structfield></entry>
|
||||
<entry></entry>
|
||||
<entry>Indicates the field order of the image in the
|
||||
@@ -630,11 +631,12 @@ bandwidth. These devices identify by not enumerating any video
|
||||
standards, see <xref linkend="standard" />.</para></entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry>&v4l2-memory;</entry>
|
||||
<entry>__u32</entry>
|
||||
<entry><structfield>memory</structfield></entry>
|
||||
<entry></entry>
|
||||
<entry>This field must be set by applications and/or drivers
|
||||
in accordance with the selected I/O method.</entry>
|
||||
in accordance with the selected I/O method. See <xref linkend="v4l2-memory"
|
||||
/></entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry>union</entry>
|
||||
|
||||
@@ -1,4 +1,4 @@
|
||||
<refentry>
|
||||
<refentry id="pixfmt-srggb10">
|
||||
<refmeta>
|
||||
<refentrytitle>V4L2_PIX_FMT_SRGGB10 ('RG10'),
|
||||
V4L2_PIX_FMT_SGRBG10 ('BA10'),
|
||||
|
||||
@@ -0,0 +1,29 @@
|
||||
<refentry id="pixfmt-srggb10dpcm8">
|
||||
<refmeta>
|
||||
<refentrytitle>
|
||||
V4L2_PIX_FMT_SBGGR10DPCM8 ('bBA8'),
|
||||
V4L2_PIX_FMT_SGBRG10DPCM8 ('bGA8'),
|
||||
V4L2_PIX_FMT_SGRBG10DPCM8 ('BD10'),
|
||||
V4L2_PIX_FMT_SRGGB10DPCM8 ('bRA8'),
|
||||
</refentrytitle>
|
||||
&manvol;
|
||||
</refmeta>
|
||||
<refnamediv>
|
||||
<refname id="V4L2-PIX-FMT-SBGGR10DPCM8"><constant>V4L2_PIX_FMT_SBGGR10DPCM8</constant></refname>
|
||||
<refname id="V4L2-PIX-FMT-SGBRG10DPCM8"><constant>V4L2_PIX_FMT_SGBRG10DPCM8</constant></refname>
|
||||
<refname id="V4L2-PIX-FMT-SGRBG10DPCM8"><constant>V4L2_PIX_FMT_SGRBG10DPCM8</constant></refname>
|
||||
<refname id="V4L2-PIX-FMT-SRGGB10DPCM8"><constant>V4L2_PIX_FMT_SRGGB10DPCM8</constant></refname>
|
||||
<refpurpose>10-bit Bayer formats compressed to 8 bits</refpurpose>
|
||||
</refnamediv>
|
||||
<refsect1>
|
||||
<title>Description</title>
|
||||
|
||||
<para>The following four pixel formats are raw sRGB / Bayer formats
|
||||
with 10 bits per colour compressed to 8 bits each, using DPCM
|
||||
compression. DPCM, differential pulse-code modulation, is lossy.
|
||||
Each colour component consumes 8 bits of memory. In other respects
|
||||
this format is similar to <xref
|
||||
linkend="pixfmt-srggb10">.</xref></para>
|
||||
|
||||
</refsect1>
|
||||
</refentry>
|
||||
@@ -673,6 +673,7 @@ access the palette, this must be done with ioctls of the Linux framebuffer API.<
|
||||
&sub-srggb8;
|
||||
&sub-sbggr16;
|
||||
&sub-srggb10;
|
||||
&sub-srggb10dpcm8;
|
||||
&sub-srggb12;
|
||||
</section>
|
||||
|
||||
@@ -876,11 +877,6 @@ kernel sources in the file <filename>Documentation/video4linux/cx2341x/README.hm
|
||||
<entry>'S561'</entry>
|
||||
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@@ -28,8 +28,8 @@ documentation.</contrib>
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<firstname>Hans</firstname>
|
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<surname>Verkuil</surname>
|
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<contrib>Designed and documented the VIDIOC_LOG_STATUS ioctl,
|
||||
the extended control ioctls and major parts of the sliced VBI
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API.</contrib>
|
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the extended control ioctls, major parts of the sliced VBI API, the
|
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MPEG encoder and decoder APIs and the DV Timings API.</contrib>
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<affiliation>
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<address>
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<email>hverkuil@xs4all.nl</email>
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@@ -96,6 +96,17 @@ Remote Controller chapter.</contrib>
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</address>
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</affiliation>
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</author>
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<author>
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<firstname>Sakari</firstname>
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<surname>Ailus</surname>
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<contrib>Subdev selections API.</contrib>
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<affiliation>
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<address>
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<email>sakari.ailus@iki.fi</email>
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</address>
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</affiliation>
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</author>
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</authorgroup>
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<copyright>
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@@ -112,6 +123,7 @@ Remote Controller chapter.</contrib>
|
||||
<year>2009</year>
|
||||
<year>2010</year>
|
||||
<year>2011</year>
|
||||
<year>2012</year>
|
||||
<holder>Bill Dirks, Michael H. Schimek, Hans Verkuil, Martin
|
||||
Rubli, Andy Walls, Muralidharan Karicheri, Mauro Carvalho Chehab,
|
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Pawel Osciak</holder>
|
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@@ -127,6 +139,28 @@ structs, ioctls) must be noted in more detail in the history chapter
|
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(compat.xml), along with the possible impact on existing drivers and
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applications. -->
|
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<revision>
|
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<revnumber>3.5</revnumber>
|
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<date>2012-05-07</date>
|
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<authorinitials>sa, sn</authorinitials>
|
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<revremark>Added V4L2_CTRL_TYPE_INTEGER_MENU and V4L2 subdev
|
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selections API. Improved the description of V4L2_CID_COLORFX
|
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control, added V4L2_CID_COLORFX_CBCR control.
|
||||
Added camera controls V4L2_CID_AUTO_EXPOSURE_BIAS,
|
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V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE, V4L2_CID_IMAGE_STABILIZATION,
|
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V4L2_CID_ISO_SENSITIVITY, V4L2_CID_ISO_SENSITIVITY_AUTO,
|
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V4L2_CID_EXPOSURE_METERING, V4L2_CID_SCENE_MODE,
|
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V4L2_CID_3A_LOCK, V4L2_CID_AUTO_FOCUS_START,
|
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V4L2_CID_AUTO_FOCUS_STOP, V4L2_CID_AUTO_FOCUS_STATUS
|
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and V4L2_CID_AUTO_FOCUS_RANGE.
|
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</revremark>
|
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<date>2012-05-01</date>
|
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<authorinitials>hv</authorinitials>
|
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<revremark>Added VIDIOC_ENUM_DV_TIMINGS, VIDIOC_QUERY_DV_TIMINGS and
|
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VIDIOC_DV_TIMINGS_CAP.
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</revremark>
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</revision>
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<revision>
|
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<revnumber>3.4</revnumber>
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<date>2012-01-25</date>
|
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@@ -433,7 +467,7 @@ and discussions on the V4L mailing list.</revremark>
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</partinfo>
|
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<title>Video for Linux Two API Specification</title>
|
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<subtitle>Revision 3.3</subtitle>
|
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<subtitle>Revision 3.5</subtitle>
|
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<chapter id="common">
|
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&sub-common;
|
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@@ -491,10 +525,12 @@ and discussions on the V4L mailing list.</revremark>
|
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&sub-dbg-g-register;
|
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&sub-decoder-cmd;
|
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&sub-dqevent;
|
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&sub-dv-timings-cap;
|
||||
&sub-encoder-cmd;
|
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&sub-enumaudio;
|
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&sub-enumaudioout;
|
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&sub-enum-dv-presets;
|
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&sub-enum-dv-timings;
|
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&sub-enum-fmt;
|
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&sub-enum-framesizes;
|
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&sub-enum-frameintervals;
|
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@@ -529,6 +565,7 @@ and discussions on the V4L mailing list.</revremark>
|
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&sub-querycap;
|
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&sub-queryctrl;
|
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&sub-query-dv-preset;
|
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&sub-query-dv-timings;
|
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&sub-querystd;
|
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&sub-prepare-buf;
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&sub-reqbufs;
|
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@@ -540,6 +577,7 @@ and discussions on the V4L mailing list.</revremark>
|
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&sub-subdev-g-crop;
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&sub-subdev-g-fmt;
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&sub-subdev-g-frame-interval;
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&sub-subdev-g-selection;
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&sub-subscribe-event;
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<!-- End of ioctls. -->
|
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&sub-mmap;
|
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@@ -48,6 +48,12 @@
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<refsect1>
|
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<title>Description</title>
|
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<note>
|
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<title>Experimental</title>
|
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<para>This is an <link linkend="experimental"> experimental </link>
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interface and may change in the future.</para>
|
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</note>
|
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|
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<para>This ioctl is used to create buffers for <link linkend="mmap">memory
|
||||
mapped</link> or <link linkend="userp">user pointer</link>
|
||||
I/O. It can be used as an alternative or in addition to the
|
||||
@@ -94,16 +100,18 @@ information.</para>
|
||||
<entry>The number of buffers requested or granted.</entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry>&v4l2-memory;</entry>
|
||||
<entry>__u32</entry>
|
||||
<entry><structfield>memory</structfield></entry>
|
||||
<entry>Applications set this field to
|
||||
<constant>V4L2_MEMORY_MMAP</constant> or
|
||||
<constant>V4L2_MEMORY_USERPTR</constant>.</entry>
|
||||
<constant>V4L2_MEMORY_USERPTR</constant>. See <xref linkend="v4l2-memory"
|
||||
/></entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry>&v4l2-format;</entry>
|
||||
<entry>__u32</entry>
|
||||
<entry><structfield>format</structfield></entry>
|
||||
<entry>Filled in by the application, preserved by the driver.</entry>
|
||||
<entry>Filled in by the application, preserved by the driver.
|
||||
See <xref linkend="v4l2-format" />.</entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry>__u32</entry>
|
||||
|
||||
@@ -65,7 +65,7 @@ output.</para>
|
||||
&cs-str;
|
||||
<tbody valign="top">
|
||||
<row>
|
||||
<entry>&v4l2-buf-type;</entry>
|
||||
<entry>__u32</entry>
|
||||
<entry><structfield>type</structfield></entry>
|
||||
<entry>Type of the data stream, set by the application.
|
||||
Only these types are valid here:
|
||||
@@ -73,7 +73,7 @@ Only these types are valid here:
|
||||
<constant>V4L2_BUF_TYPE_VIDEO_OUTPUT</constant>,
|
||||
<constant>V4L2_BUF_TYPE_VIDEO_OVERLAY</constant>, and custom (driver
|
||||
defined) types with code <constant>V4L2_BUF_TYPE_PRIVATE</constant>
|
||||
and higher.</entry>
|
||||
and higher. See <xref linkend="v4l2-buf-type" />.</entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry>struct <link linkend="v4l2-rect-crop">v4l2_rect</link></entry>
|
||||
|
||||
Some files were not shown because too many files have changed in this diff Show More
Reference in New Issue
Block a user