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-rw-r--r--.hgignore2
-rw-r--r--linux/Documentation/video4linux/gspca.txt1
-rw-r--r--linux/drivers/media/dvb/siano/Kconfig41
-rw-r--r--linux/drivers/media/dvb/siano/Makefile9
-rw-r--r--linux/drivers/media/radio/Kconfig10
-rw-r--r--linux/drivers/media/video/gspca/Kconfig17
-rw-r--r--linux/drivers/media/video/gspca/Makefile2
-rw-r--r--linux/drivers/media/video/gspca/jeilinj.c388
-rw-r--r--linux/drivers/media/video/zr364xx.c2
-rw-r--r--v4l2-apps/test/v4l2grab.c2
-rw-r--r--v4l2-spec/Makefile16
-rw-r--r--v4l2-spec/libv4l.sgml168
-rw-r--r--v4l2-spec/v4l2.sgml38
13 files changed, 657 insertions, 39 deletions
diff --git a/.hgignore b/.hgignore
index e09075e29..bc408c495 100644
--- a/.hgignore
+++ b/.hgignore
@@ -66,6 +66,8 @@ v4l2-spec/capture.c.sgml$
v4l2-spec/entities.sgml$
v4l2-spec/.*\.stamp$
v4l2-spec/indices.sgml$
+v4l2-spec/libv4l-fmt.sgml$
+v4l2-spec/v4l2grab.c.sgml$
v4l2-spec/v4l2-single$
v4l2-spec/v4l2$
v4l2-spec/v4l2.pdf$
diff --git a/linux/Documentation/video4linux/gspca.txt b/linux/Documentation/video4linux/gspca.txt
index b43702470..76203a221 100644
--- a/linux/Documentation/video4linux/gspca.txt
+++ b/linux/Documentation/video4linux/gspca.txt
@@ -239,6 +239,7 @@ pac7311 093a:2626 Labtec 2200
pac7311 093a:2629 Genious iSlim 300
pac7311 093a:262a Webcam 300k
pac7311 093a:262c Philips SPC 230 NC
+jeilinj 0979:0280 Sakar 57379
zc3xx 0ac8:0302 Z-star Vimicro zc0302
vc032x 0ac8:0321 Vimicro generic vc0321
vc032x 0ac8:0323 Vimicro Vc0323
diff --git a/linux/drivers/media/dvb/siano/Kconfig b/linux/drivers/media/dvb/siano/Kconfig
index 88847d1dc..ff297ceaf 100644
--- a/linux/drivers/media/dvb/siano/Kconfig
+++ b/linux/drivers/media/dvb/siano/Kconfig
@@ -2,25 +2,34 @@
# Siano Mobile Silicon Digital TV device configuration
#
-config DVB_SIANO_SMS1XXX
- tristate "Siano SMS1XXX USB dongle support"
- depends on DVB_CORE && USB && INPUT
+config SMS_SIANO_MDTV
+ tristate "Siano SMS1xxx based MDTV receiver"
+ depends on DVB_CORE && INPUT
---help---
- Choose Y here if you have a USB dongle with a SMS1XXX chipset.
+ Choose Y or M here if you have MDTV receiver with a Siano chipset.
- To compile this driver as a module, choose M here: the
- module will be called sms1xxx.
+ To compile this driver as a module, choose M here
+ (The module will be called smsmdtv).
-config DVB_SIANO_SMS1XXX_SMS_IDS
- bool "Enable support for Siano Mobile Silicon default USB IDs"
- depends on DVB_SIANO_SMS1XXX
- default y
- ---help---
- Choose Y here if you have a USB dongle with a SMS1XXX chipset
- that uses Siano Mobile Silicon's default usb vid:pid.
+ Further documentation on this driver can be found on the WWW
+ at http://www.siano-ms.com/
+
+if SMS_SIANO_MDTV
+menu "Siano module components"
- Choose N here if you would prefer to use Siano's external driver.
+# Hardware interfaces support
- Further documentation on this driver can be found on the WWW at
- <http://www.siano-ms.com/>.
+config SMS_USB_DRV
+ tristate "USB interface support"
+ depends on DVB_CORE && USB
+ ---help---
+ Choose if you would like to have Siano's support for USB interface
+config SMS_SDIO_DRV
+ tristate "SDIO interface support"
+ depends on DVB_CORE && MMC
+ default m
+ ---help---
+ Choose if you would like to have Siano's support for SDIO interface
+endmenu
+endif # SMS_SIANO_MDTV
diff --git a/linux/drivers/media/dvb/siano/Makefile b/linux/drivers/media/dvb/siano/Makefile
index c6644d909..c54140b5a 100644
--- a/linux/drivers/media/dvb/siano/Makefile
+++ b/linux/drivers/media/dvb/siano/Makefile
@@ -1,8 +1,9 @@
-sms1xxx-objs := smscoreapi.o sms-cards.o smsendian.o smsir.o
-obj-$(CONFIG_DVB_SIANO_SMS1XXX) += sms1xxx.o
-obj-$(CONFIG_DVB_SIANO_SMS1XXX) += smsusb.o
-obj-$(CONFIG_DVB_SIANO_SMS1XXX) += smsdvb.o
+smsmdtv-objs := smscoreapi.o sms-cards.o smsendian.o smsir.o
+
+obj-$(CONFIG_SMS_SIANO_MDTV) += smsmdtv.o smsdvb.o
+obj-$(CONFIG_SMS_USB_DRV) += smsusb.o
+obj-$(CONFIG_SMS_SDIO_DRV) += smssdio.o
EXTRA_CFLAGS += -Idrivers/media/dvb/dvb-core
diff --git a/linux/drivers/media/radio/Kconfig b/linux/drivers/media/radio/Kconfig
index 41bbec6df..0e39edf75 100644
--- a/linux/drivers/media/radio/Kconfig
+++ b/linux/drivers/media/radio/Kconfig
@@ -288,16 +288,6 @@ config RADIO_TYPHOON
To compile this driver as a module, choose M here: the
module will be called radio-typhoon.
-config RADIO_TYPHOON_PROC_FS
- bool "Support for /proc/radio-typhoon"
- depends on PROC_FS && RADIO_TYPHOON
- help
- Say Y here if you want the typhoon radio card driver to write
- status information (frequency, volume, muted, mute frequency,
- base address) to /proc/radio-typhoon. The file can be viewed with
- your favorite pager (i.e. use "more /proc/radio-typhoon" or "less
- /proc/radio-typhoon" or simply "cat /proc/radio-typhoon").
-
config RADIO_TYPHOON_PORT
hex "Typhoon I/O port (0x316 or 0x336)"
depends on RADIO_TYPHOON=y
diff --git a/linux/drivers/media/video/gspca/Kconfig b/linux/drivers/media/video/gspca/Kconfig
index 34f46f2bc..c9166e543 100644
--- a/linux/drivers/media/video/gspca/Kconfig
+++ b/linux/drivers/media/video/gspca/Kconfig
@@ -47,6 +47,15 @@ config USB_GSPCA_FINEPIX
To compile this driver as a module, choose M here: the
module will be called gspca_finepix.
+config USB_GSPCA_JEILINJ
+ tristate "Jeilin JPEG USB V4L2 driver"
+ depends on VIDEO_V4L2 && USB_GSPCA
+ help
+ Say Y here if you want support for cameras based on this Jeilin chip.
+
+ To compile this driver as a module, choose M here: the
+ module will be called gspca_jeilinj.
+
config USB_GSPCA_MARS
tristate "Mars USB Camera Driver"
depends on VIDEO_V4L2 && USB_GSPCA
@@ -113,10 +122,10 @@ config USB_GSPCA_SN9C20X
module will be called gspca_sn9c20x.
config USB_GSPCA_SN9C20X_EVDEV
- bool "Enable evdev support"
- depends on USB_GSPCA_SN9C20X
- ---help---
- Say Y here in order to enable evdev support for sn9c20x webcam button.
+ bool "Enable evdev support"
+ depends on USB_GSPCA_SN9C20X
+ ---help---
+ Say Y here in order to enable evdev support for sn9c20x webcam button.
config USB_GSPCA_SONIXB
tristate "SONIX Bayer USB Camera Driver"
diff --git a/linux/drivers/media/video/gspca/Makefile b/linux/drivers/media/video/gspca/Makefile
index f6d3b86e9..035616b5e 100644
--- a/linux/drivers/media/video/gspca/Makefile
+++ b/linux/drivers/media/video/gspca/Makefile
@@ -2,6 +2,7 @@ obj-$(CONFIG_USB_GSPCA) += gspca_main.o
obj-$(CONFIG_USB_GSPCA_CONEX) += gspca_conex.o
obj-$(CONFIG_USB_GSPCA_ETOMS) += gspca_etoms.o
obj-$(CONFIG_USB_GSPCA_FINEPIX) += gspca_finepix.o
+obj-$(CONFIG_USB_GSPCA_JEILINJ) += gspca_jeilinj.o
obj-$(CONFIG_USB_GSPCA_MARS) += gspca_mars.o
obj-$(CONFIG_USB_GSPCA_MR97310A) += gspca_mr97310a.o
obj-$(CONFIG_USB_GSPCA_OV519) += gspca_ov519.o
@@ -30,6 +31,7 @@ gspca_main-objs := gspca.o
gspca_conex-objs := conex.o
gspca_etoms-objs := etoms.o
gspca_finepix-objs := finepix.o
+gspca_jeilinj-objs := jeilinj.o
gspca_mars-objs := mars.o
gspca_mr97310a-objs := mr97310a.o
gspca_ov519-objs := ov519.o
diff --git a/linux/drivers/media/video/gspca/jeilinj.c b/linux/drivers/media/video/gspca/jeilinj.c
new file mode 100644
index 000000000..dbfa3ed6e
--- /dev/null
+++ b/linux/drivers/media/video/gspca/jeilinj.c
@@ -0,0 +1,388 @@
+/*
+ * Jeilinj subdriver
+ *
+ * Supports some Jeilin dual-mode cameras which use bulk transport and
+ * download raw JPEG data.
+ *
+ * Copyright (C) 2009 Theodore Kilgore
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#define MODULE_NAME "jeilinj"
+
+#include <linux/workqueue.h>
+#include "gspca.h"
+#include "jpeg.h"
+
+MODULE_AUTHOR("Theodore Kilgore <kilgota@auburn.edu>");
+MODULE_DESCRIPTION("GSPCA/JEILINJ USB Camera Driver");
+MODULE_LICENSE("GPL");
+
+/* Default timeouts, in ms */
+#define JEILINJ_CMD_TIMEOUT 500
+#define JEILINJ_DATA_TIMEOUT 1000
+
+/* Maximum transfer size to use. */
+#define JEILINJ_MAX_TRANSFER 0x200
+
+#define FRAME_HEADER_LEN 0x10
+
+/* Structure to hold all of our device specific stuff */
+struct sd {
+ struct gspca_dev gspca_dev; /* !! must be the first item */
+ const struct v4l2_pix_format *cap_mode;
+ /* Driver stuff */
+ struct work_struct work_struct;
+ struct workqueue_struct *work_thread;
+ u8 quality; /* image quality */
+ u8 jpegqual; /* webcam quality */
+ u8 *jpeg_hdr;
+};
+
+ struct jlj_command {
+ unsigned char instruction[2];
+ unsigned char ack_wanted;
+ };
+
+/* AFAICT these cameras will only do 320x240. */
+static struct v4l2_pix_format jlj_mode[] = {
+ { 320, 240, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
+ .bytesperline = 320,
+ .sizeimage = 320 * 240,
+ .colorspace = V4L2_COLORSPACE_JPEG,
+ .priv = 0}
+};
+
+/*
+ * cam uses endpoint 0x03 to send commands, 0x84 for read commands,
+ * and 0x82 for bulk transfer.
+ */
+
+/* All commands are two bytes only */
+static int jlj_write2(struct gspca_dev *gspca_dev, unsigned char *command)
+{
+ int retval;
+
+ memcpy(gspca_dev->usb_buf, command, 2);
+ retval = usb_bulk_msg(gspca_dev->dev,
+ usb_sndbulkpipe(gspca_dev->dev, 3),
+ gspca_dev->usb_buf, 2, NULL, 500);
+ if (retval < 0)
+ PDEBUG(D_ERR, "command write [%02x] error %d",
+ gspca_dev->usb_buf[0], retval);
+ return retval;
+}
+
+/* Responses are one byte only */
+static int jlj_read1(struct gspca_dev *gspca_dev, unsigned char response)
+{
+ int retval;
+
+ retval = usb_bulk_msg(gspca_dev->dev,
+ usb_rcvbulkpipe(gspca_dev->dev, 0x84),
+ gspca_dev->usb_buf, 1, NULL, 500);
+ response = gspca_dev->usb_buf[0];
+ if (retval < 0)
+ PDEBUG(D_ERR, "read command [%02x] error %d",
+ gspca_dev->usb_buf[0], retval);
+ return retval;
+}
+
+static int jlj_start(struct gspca_dev *gspca_dev)
+{
+ int i;
+ int retval = -1;
+ u8 response = 0xff;
+ struct jlj_command start_commands[] = {
+ {{0x71, 0x81}, 0},
+ {{0x70, 0x05}, 0},
+ {{0x95, 0x70}, 1},
+ {{0x71, 0x81}, 0},
+ {{0x70, 0x04}, 0},
+ {{0x95, 0x70}, 1},
+ {{0x71, 0x00}, 0},
+ {{0x70, 0x08}, 0},
+ {{0x95, 0x70}, 1},
+ {{0x94, 0x02}, 0},
+ {{0xde, 0x24}, 0},
+ {{0x94, 0x02}, 0},
+ {{0xdd, 0xf0}, 0},
+ {{0x94, 0x02}, 0},
+ {{0xe3, 0x2c}, 0},
+ {{0x94, 0x02}, 0},
+ {{0xe4, 0x00}, 0},
+ {{0x94, 0x02}, 0},
+ {{0xe5, 0x00}, 0},
+ {{0x94, 0x02}, 0},
+ {{0xe6, 0x2c}, 0},
+ {{0x94, 0x03}, 0},
+ {{0xaa, 0x00}, 0},
+ {{0x71, 0x1e}, 0},
+ {{0x70, 0x06}, 0},
+ {{0x71, 0x80}, 0},
+ {{0x70, 0x07}, 0}
+ };
+ for (i = 0; i < ARRAY_SIZE(start_commands); i++) {
+ retval = jlj_write2(gspca_dev, start_commands[i].instruction);
+ if (retval < 0)
+ return retval;
+ if (start_commands[i].ack_wanted)
+ retval = jlj_read1(gspca_dev, response);
+ if (retval < 0)
+ return retval;
+ }
+ PDEBUG(D_ERR, "jlj_start retval is %d", retval);
+ return retval;
+}
+
+static int jlj_stop(struct gspca_dev *gspca_dev)
+{
+ int i;
+ int retval;
+ struct jlj_command stop_commands[] = {
+ {{0x71, 0x00}, 0},
+ {{0x70, 0x09}, 0},
+ {{0x71, 0x80}, 0},
+ {{0x70, 0x05}, 0}
+ };
+ for (i = 0; i < ARRAY_SIZE(stop_commands); i++) {
+ retval = jlj_write2(gspca_dev, stop_commands[i].instruction);
+ if (retval < 0)
+ return retval;
+ }
+ return retval;
+}
+
+/* This function is called as a workqueue function and runs whenever the camera
+ * is streaming data. Because it is a workqueue function it is allowed to sleep
+ * so we can use synchronous USB calls. To avoid possible collisions with other
+ * threads attempting to use the camera's USB interface the gspca usb_lock is
+ * used when performing the one USB control operation inside the workqueue,
+ * which tells the camera to close the stream. In practice the only thing
+ * which needs to be protected against is the usb_set_interface call that
+ * gspca makes during stream_off. Otherwise the camera doesn't provide any
+ * controls that the user could try to change.
+ */
+
+static void jlj_dostream(struct work_struct *work)
+{
+ struct sd *dev = container_of(work, struct sd, work_struct);
+ struct gspca_dev *gspca_dev = &dev->gspca_dev;
+ struct gspca_frame *frame;
+ int blocks_left; /* 0x200-sized blocks remaining in current frame. */
+ int size_in_blocks;
+ int act_len;
+ int discarding = 0; /* true if we failed to get space for frame. */
+ int packet_type;
+ int ret;
+ u8 *buffer;
+
+ buffer = kmalloc(JEILINJ_MAX_TRANSFER, GFP_KERNEL | GFP_DMA);
+ if (!buffer) {
+ PDEBUG(D_ERR, "Couldn't allocate USB buffer");
+ goto quit_stream;
+ }
+ while (gspca_dev->present && gspca_dev->streaming) {
+ if (!gspca_dev->present)
+ goto quit_stream;
+ /* Start a new frame, and add the JPEG header, first thing */
+ frame = gspca_get_i_frame(gspca_dev);
+ if (frame && !discarding)
+ gspca_frame_add(gspca_dev, FIRST_PACKET, frame,
+ dev->jpeg_hdr, JPEG_HDR_SZ);
+ else
+ discarding = 1;
+ /*
+ * Now request data block 0. Line 0 reports the size
+ * to download, in blocks of size 0x200, and also tells the
+ * "actual" data size, in bytes, which seems best to ignore.
+ */
+ ret = usb_bulk_msg(gspca_dev->dev,
+ usb_rcvbulkpipe(gspca_dev->dev, 0x82),
+ buffer, JEILINJ_MAX_TRANSFER, &act_len,
+ JEILINJ_DATA_TIMEOUT);
+ PDEBUG(D_STREAM,
+ "Got %d bytes out of %d for Block 0",
+ act_len, JEILINJ_MAX_TRANSFER);
+ if (ret < 0 || act_len < FRAME_HEADER_LEN)
+ goto quit_stream;
+ size_in_blocks = buffer[0x0a];
+ blocks_left = buffer[0x0a] - 1;
+ PDEBUG(D_STREAM, "blocks_left = 0x%x", blocks_left);
+ packet_type = INTER_PACKET;
+ if (frame && !discarding)
+ /* Toss line 0 of data block 0, keep the rest. */
+ gspca_frame_add(gspca_dev, packet_type,
+ frame, buffer + FRAME_HEADER_LEN,
+ JEILINJ_MAX_TRANSFER - FRAME_HEADER_LEN);
+ else
+ discarding = 1;
+ while (blocks_left > 0) {
+ if (!gspca_dev->present)
+ goto quit_stream;
+ ret = usb_bulk_msg(gspca_dev->dev,
+ usb_rcvbulkpipe(gspca_dev->dev, 0x82),
+ buffer, JEILINJ_MAX_TRANSFER, &act_len,
+ JEILINJ_DATA_TIMEOUT);
+ if (ret < 0 || act_len < JEILINJ_MAX_TRANSFER)
+ goto quit_stream;
+ PDEBUG(D_STREAM,
+ "%d blocks remaining for frame", blocks_left);
+ blocks_left -= 1;
+ if (blocks_left == 0)
+ packet_type = LAST_PACKET;
+ else
+ packet_type = INTER_PACKET;
+ if (frame && !discarding)
+ gspca_frame_add(gspca_dev, packet_type,
+ frame, buffer,
+ JEILINJ_MAX_TRANSFER);
+ else
+ discarding = 1;
+ }
+ }
+quit_stream:
+ mutex_lock(&gspca_dev->usb_lock);
+ if (gspca_dev->present)
+ jlj_stop(gspca_dev);
+ mutex_unlock(&gspca_dev->usb_lock);
+ kfree(buffer);
+}
+
+/* This function is called at probe time just before sd_init */
+static int sd_config(struct gspca_dev *gspca_dev,
+ const struct usb_device_id *id)
+{
+ struct cam *cam = &gspca_dev->cam;
+ struct sd *dev = (struct sd *) gspca_dev;
+
+ dev->quality = 85;
+ dev->jpegqual = 85;
+ PDEBUG(D_PROBE,
+ "JEILINJ camera detected"
+ " (vid/pid 0x%04X:0x%04X)", id->idVendor, id->idProduct);
+ cam->cam_mode = jlj_mode;
+ cam->nmodes = 1;
+ cam->bulk = 1;
+ /* We don't use the buffer gspca allocates so make it small. */
+ cam->bulk_size = 32;
+ INIT_WORK(&dev->work_struct, jlj_dostream);
+ return 0;
+}
+
+/* called on streamoff with alt==0 and on disconnect */
+/* the usb_lock is held at entry - restore on exit */
+static void sd_stop0(struct gspca_dev *gspca_dev)
+{
+ struct sd *dev = (struct sd *) gspca_dev;
+
+ /* wait for the work queue to terminate */
+ mutex_unlock(&gspca_dev->usb_lock);
+ /* This waits for jlj_dostream to finish */
+ destroy_workqueue(dev->work_thread);
+ dev->work_thread = NULL;
+ mutex_lock(&gspca_dev->usb_lock);
+ kfree(dev->jpeg_hdr);
+}
+
+/* this function is called at probe and resume time */
+static int sd_init(struct gspca_dev *gspca_dev)
+{
+ return 0;
+}
+
+/* Set up for getting frames. */
+static int sd_start(struct gspca_dev *gspca_dev)
+{
+ struct sd *dev = (struct sd *) gspca_dev;
+ int ret;
+
+ /* create the JPEG header */
+ dev->jpeg_hdr = kmalloc(JPEG_HDR_SZ, GFP_KERNEL);
+ jpeg_define(dev->jpeg_hdr, gspca_dev->height, gspca_dev->width,
+ 0x21); /* JPEG 422 */
+ jpeg_set_qual(dev->jpeg_hdr, dev->quality);
+ PDEBUG(D_STREAM, "Start streaming at 320x240");
+ ret = jlj_start(gspca_dev);
+ if (ret < 0) {
+ PDEBUG(D_ERR, "Start streaming command failed");
+ return ret;
+ }
+ /* Start the workqueue function to do the streaming */
+ dev->work_thread = create_singlethread_workqueue(MODULE_NAME);
+ queue_work(dev->work_thread, &dev->work_struct);
+
+ return 0;
+}
+
+/* Table of supported USB devices */
+static const __devinitdata struct usb_device_id device_table[] = {
+ {USB_DEVICE(0x0979, 0x0280)},
+ {}
+};
+
+MODULE_DEVICE_TABLE(usb, device_table);
+
+/* sub-driver description */
+static const struct sd_desc sd_desc = {
+ .name = MODULE_NAME,
+ .config = sd_config,
+ .init = sd_init,
+ .start = sd_start,
+ .stop0 = sd_stop0,
+};
+
+/* -- device connect -- */
+static int sd_probe(struct usb_interface *intf,
+ const struct usb_device_id *id)
+{
+ return gspca_dev_probe(intf, id,
+ &sd_desc,
+ sizeof(struct sd),
+ THIS_MODULE);
+}
+
+static struct usb_driver sd_driver = {
+ .name = MODULE_NAME,
+ .id_table = device_table,
+ .probe = sd_probe,
+ .disconnect = gspca_disconnect,
+#ifdef CONFIG_PM
+ .suspend = gspca_suspend,
+ .resume = gspca_resume,
+#endif
+};
+
+/* -- module insert / remove -- */
+static int __init sd_mod_init(void)
+{
+ int ret;
+
+ ret = usb_register(&sd_driver);
+ if (ret < 0)
+ return ret;
+ PDEBUG(D_PROBE, "registered");
+ return 0;
+}
+
+static void __exit sd_mod_exit(void)
+{
+ usb_deregister(&sd_driver);
+ PDEBUG(D_PROBE, "deregistered");
+}
+
+module_init(sd_mod_init);
+module_exit(sd_mod_exit);
diff --git a/linux/drivers/media/video/zr364xx.c b/linux/drivers/media/video/zr364xx.c
index c298ce625..ee5534230 100644
--- a/linux/drivers/media/video/zr364xx.c
+++ b/linux/drivers/media/video/zr364xx.c
@@ -1367,7 +1367,7 @@ static int zr364xx_release(struct file *file)
for (i = 0; i < 2; i++) {
err =
send_control_msg(udev, 1, init[cam->method][i].value,
- 0, init[i][cam->method].bytes,
+ 0, init[cam->method][i].bytes,
init[cam->method][i].size);
if (err < 0) {
dev_err(&udev->dev, "error during release sequence\n");
diff --git a/v4l2-apps/test/v4l2grab.c b/v4l2-apps/test/v4l2grab.c
index 153a0dd30..de921874b 100644
--- a/v4l2-apps/test/v4l2grab.c
+++ b/v4l2-apps/test/v4l2grab.c
@@ -1,5 +1,5 @@
/* V4L2 video picture grabber
- Copyright (C) 2006 Mauro Carvalho Chehab <mchehab@infradead.org>
+ Copyright (C) 2009 Mauro Carvalho Chehab <mchehab@infradead.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
diff --git a/v4l2-spec/Makefile b/v4l2-spec/Makefile
index 8f40e8614..616445137 100644
--- a/v4l2-spec/Makefile
+++ b/v4l2-spec/Makefile
@@ -5,6 +5,7 @@ SHELL=/bin/bash
SGMLS = \
biblio.sgml \
capture.c.sgml \
+ v4l2grab.c.sgml \
common.sgml \
compat.sgml \
controls.sgml \
@@ -20,6 +21,7 @@ SGMLS = \
dev-sliced-vbi.sgml \
dev-teletext.sgml \
driver.sgml \
+ libv4l.sgml \
entities.sgml \
fdl-appendix.sgml \
func-close.sgml \
@@ -323,6 +325,12 @@ DOCUMENTED = \
-e "s/\(V4L2_PIX_FMT_[A-Z0-9_]\+\) /<link linkend=\"\1\">\1<\/link> /g" \
-e ":a;s/\(linkend=\".*\)_\(.*\">\)/\1-\2/;ta"
+libv4l-fmt.sgml:
+ cat ../v4l2-apps/libv4l/libv4lconvert/*.c| \
+ perl -ne 'if (m/(V4L2_PIX_FMT_[^\s\;\\)\,:]+)/) { printf "<link linkend=\"$$1\"><constant>$$1</constant></link>,\n"; };' \
+ |sort|uniq| \
+ sed -e ":a;s/\(linkend=\".*\)_\(.*\">\)/\1-\2/;ta" > $@
+
capture.c.sgml: ../v4l2-apps/test/capture-example.c Makefile
echo "<programlisting>" > $@
expand --tabs=8 < $< | \
@@ -330,6 +338,13 @@ capture.c.sgml: ../v4l2-apps/test/capture-example.c Makefile
sed 's/i\.e\./&ie;/' >> $@
echo "</programlisting>" >> $@
+v4l2grab.c.sgml: ../v4l2-apps/test/v4l2grab.c Makefile
+ echo "<programlisting>" > $@
+ expand --tabs=8 < $< | \
+ sed $(ESCAPE) $(DOCUMENTED) | \
+ sed 's/i\.e\./&ie;/' >> $@
+ echo "</programlisting>" >> $@
+
videodev2.h.sgml: ../linux/include/linux/videodev2.h Makefile
echo "<programlisting>" > $@
expand --tabs=8 < $< | \
@@ -488,6 +503,7 @@ distclean clean:
rm -f *.stamp
rm -f videodev2.h.sgml
rm -f capture.c.sgml
+ rm -f v4l2grab.c.sgml
rm -f capture
rm -f indices.sgml entities.sgml
rm -rf v4l2 v4l2-single v4l2.pdf
diff --git a/v4l2-spec/libv4l.sgml b/v4l2-spec/libv4l.sgml
new file mode 100644
index 000000000..ec1f8b6fe
--- /dev/null
+++ b/v4l2-spec/libv4l.sgml
@@ -0,0 +1,168 @@
+<title>Libv4l Userspace Library</title>
+<section id="libv4l-introduction">
+ <title>Introduction</title>
+
+ <para>libv4l is a collection of libraries which adds a thin abstraction
+layer on top of video4linux2 devices. The purpose of this (thin) layer
+is to make it easy for application writers to support a wide variety of
+devices without having to write separate code for different devices in the
+same class.</para>
+<para>An example of using libv4l is provided by
+<link linkend='v4l2grab-example'>v4l2grab</link>.
+</para>
+
+ <para>libv4l consists of 3 different libraries:</para>
+ <section>
+ <title>libv4lconvert</title>
+
+ <para>libv4lconvert is a library that converts several
+different pixelformats found in V4L2 drivers into a few common RGB and
+YUY formats.</para>
+ <para>It currently accepts the following V4L2 driver formats:
+<link linkend="V4L2-PIX-FMT-BGR24"><constant>V4L2_PIX_FMT_BGR24</constant></link>,
+<link linkend="V4L2-PIX-FMT-HM12"><constant>V4L2_PIX_FMT_HM12</constant></link>,
+<link linkend="V4L2-PIX-FMT-JPEG"><constant>V4L2_PIX_FMT_JPEG</constant></link>,
+<link linkend="V4L2-PIX-FMT-MJPEG"><constant>V4L2_PIX_FMT_MJPEG</constant></link>,
+<link linkend="V4L2-PIX-FMT-MR97310A"><constant>V4L2_PIX_FMT_MR97310A</constant></link>,
+<link linkend="V4L2-PIX-FMT-OV511"><constant>V4L2_PIX_FMT_OV511</constant></link>,
+<link linkend="V4L2-PIX-FMT-OV518"><constant>V4L2_PIX_FMT_OV518</constant></link>,
+<link linkend="V4L2-PIX-FMT-PAC207"><constant>V4L2_PIX_FMT_PAC207</constant></link>,
+<link linkend="V4L2-PIX-FMT-PJPG"><constant>V4L2_PIX_FMT_PJPG</constant></link>,
+<link linkend="V4L2-PIX-FMT-RGB24"><constant>V4L2_PIX_FMT_RGB24</constant></link>,
+<link linkend="V4L2-PIX-FMT-SBGGR8"><constant>V4L2_PIX_FMT_SBGGR8</constant></link>,
+<link linkend="V4L2-PIX-FMT-SGBRG8"><constant>V4L2_PIX_FMT_SGBRG8</constant></link>,
+<link linkend="V4L2-PIX-FMT-SGRBG8"><constant>V4L2_PIX_FMT_SGRBG8</constant></link>,
+<link linkend="V4L2-PIX-FMT-SN9C10X"><constant>V4L2_PIX_FMT_SN9C10X</constant></link>,
+<link linkend="V4L2-PIX-FMT-SN9C20X-I420"><constant>V4L2_PIX_FMT_SN9C20X_I420</constant></link>,
+<link linkend="V4L2-PIX-FMT-SPCA501"><constant>V4L2_PIX_FMT_SPCA501</constant></link>,
+<link linkend="V4L2-PIX-FMT-SPCA505"><constant>V4L2_PIX_FMT_SPCA505</constant></link>,
+<link linkend="V4L2-PIX-FMT-SPCA508"><constant>V4L2_PIX_FMT_SPCA508</constant></link>,
+<link linkend="V4L2-PIX-FMT-SPCA561"><constant>V4L2_PIX_FMT_SPCA561</constant></link>,
+<link linkend="V4L2-PIX-FMT-SQ905C"><constant>V4L2_PIX_FMT_SQ905C</constant></link>,
+<constant>V4L2_PIX_FMT_SRGGB8</constant>,
+<link linkend="V4L2-PIX-FMT-UYVY"><constant>V4L2_PIX_FMT_UYVY</constant></link>,
+<link linkend="V4L2-PIX-FMT-YUV420"><constant>V4L2_PIX_FMT_YUV420</constant></link>,
+<link linkend="V4L2-PIX-FMT-YUYV"><constant>V4L2_PIX_FMT_YUYV</constant></link>,
+<link linkend="V4L2-PIX-FMT-YVU420"><constant>V4L2_PIX_FMT_YVU420</constant></link>,
+and <link linkend="V4L2-PIX-FMT-YVYU"><constant>V4L2_PIX_FMT_YVYU</constant></link>.
+</para>
+ <para>Later on libv4lconvert was expanded to also be able to do
+various video processing functions to improve webcam video quality.
+The video processing is split in to 2 parts: libv4lconvert/control and
+libv4lconvert/processing.</para>
+
+ <para>The control part is used to offer video controls which can
+be used to control the video processing functions made available by
+ libv4lconvert/processing. These controls are stored application wide
+(until reboot) by using a persistent shared memory object.</para>
+
+ <para>libv4lconvert/processing offers the actual video
+processing functionality.</para>
+ </section>
+ <section>
+ <title>libv4l1</title>
+ <para>This library offers functions that can be used to quickly
+make v4l1 applications work with v4l2 devices. These functions work exactly
+like the normal open/close/etc, except that libv4l1 does full emulation of
+the v4l1 api on top of v4l2 drivers, in case of v4l1 drivers it
+will just pass calls through.</para>
+ <para>Since those functions are emulations of the old V4L1 API,
+it shouldn't be used for new applications.</para>
+ </section>
+ <section>
+ <title>libv4l2</title>
+ <para>This library should be used for all modern V4L2
+applications.</para>
+ <para>It provides handles to call V4L2 open/ioctl/close/poll
+methods. Instead of just providing the raw output of the device, it enhances
+the calls in the sense that it will use libv4lconvert to provide more video
+formats and to enhance the image quality.</para>
+ <para>In most cases, libv4l2 just passes the calls directly
+through to the v4l2 driver, intercepting the calls to
+<link linkend='VIDIOC-G-FMT'><constant>VIDIOC_TRY_FMT</constant></link>,
+<link linkend='VIDIOC-G-FMT'><constant>VIDIOC_G_FMT</constant></link>
+<link linkend='VIDIOC-G-FMT'><constant>VIDIOC_S_FMT</constant></link>
+<link linkend='VIDIOC-ENUM-FRAMESIZES'><constant>VIDIOC_ENUM_FRAMESIZES</constant></link>
+and
+<link linkend='VIDIOC-ENUM-FRAMEINTERVALS'><constant>VIDIOC_ENUM_FRAMEINTERVALS</constant></link>
+in order to emulate the formats
+<link linkend="V4L2-PIX-FMT-BGR24"><constant>V4L2_PIX_FMT_BGR24</constant></link>,
+<link linkend="V4L2-PIX-FMT-RGB24"><constant>V4L2_PIX_FMT_RGB24</constant></link>,
+<link linkend="V4L2-PIX-FMT-YUV420"><constant>V4L2_PIX_FMT_YUV420</constant></link>,
+and <link linkend="V4L2-PIX-FMT-YVU420"><constant>V4L2_PIX_FMT_YVU420</constant></link>,
+if they aren't available in the driver.
+<link linkend='VIDIOC-ENUM-FMT'><constant>VIDIOC_ENUM_FMT</constant></link>
+keeps enumerating the hardware supported formats, plus the emulated formats
+offered by libv4l at the end.
+</para>
+ <section id="libv4l-ops">
+ <title>Libv4l device control functions</title>
+ <para>The common file operation methods are provided by
+libv4l.</para>
+ <para>Those functions operate just like glibc
+open/close/dup/ioctl/read/mmap/munmap:</para>
+<itemizedlist><listitem>
+ <para>int v4l2_open(const char *file, int oflag,
+...) -
+operates like the standard <link linkend='func-open'>open()</link> function.
+</para></listitem><listitem>
+ <para>int v4l2_close(int fd) -
+operates like the standard <link linkend='func-close'>close()</link> function.
+</para></listitem><listitem>
+ <para>int v4l2_dup(int fd) -
+operates like the standard dup() function, duplicating a file handler.
+</para></listitem><listitem>
+ <para>int v4l2_ioctl (int fd, unsigned long int request, ...) -
+operates like the standard <link linkend='func-ioctl'>ioctl()</link> function.
+</para></listitem><listitem>
+ <para>int v4l2_read (int fd, void* buffer, size_t n) -
+operates like the standard <link linkend='func-read'>read()</link> function.
+</para></listitem><listitem>
+ <para>void v4l2_mmap(void *start, size_t length, int prot, int flags, int fd, int64_t offset); -
+operates like the standard <link linkend='func-mmap'>mmap()</link> function.
+</para></listitem><listitem>
+ <para>int v4l2_munmap(void *_start, size_t length); -
+operates like the standard <link linkend='func-munmap'>munmap()</link> function.
+</para></listitem>
+</itemizedlist>
+ <para>Those functions provide additional control:</para>
+<itemizedlist><listitem>
+ <para>int v4l2_fd_open(int fd, int v4l2_flags) -
+opens an already opened fd for further use through v4l2lib and possibly
+modify libv4l2's default behavior through the v4l2_flags argument.
+Currently, v4l2_flags can be <constant>V4L2_DISABLE_CONVERSION</constant>,
+to disable format conversion.
+</para></listitem><listitem>
+ <para>int v4l2_set_control(int fd, int cid, int value) -
+This function takes a value of 0 - 65535, and then scales that range to
+the actual range of the given v4l control id, and then if the cid exists
+and is not locked sets the cid to the scaled value.
+</para></listitem><listitem>
+ <para>int v4l2_get_control(int fd, int cid) -
+This function returns a value of 0 - 65535, scaled to from the actual range
+of the given v4l control id. when the cid does not exist, could not be
+accessed for some reason, or some error occured 0 is returned.
+</para></listitem>
+</itemizedlist>
+ </section>
+ </section>
+ <section>
+
+ <title>v4l1compat.so wrapper library</title>
+
+ <para>This library intercepts calls to
+open/close/ioctl/mmap/mmunmap operations and redirects them to the libv4l
+counterparts, by using LD_PRELOAD=/usr/lib/v4l1compat.so. It also
+emulates V4L1 calls via V4L2 API.</para>
+ <para>It allows usage of binary legacy applications that
+still don't use libv4l.</para>
+ </section>
+
+</section>
+<!--
+Local Variables:
+mode: sgml
+sgml-parent-document: "v4l2.sgml"
+indent-tabs-mode: nil
+End:
+-->
diff --git a/v4l2-spec/v4l2.sgml b/v4l2-spec/v4l2.sgml
index bae7eb441..8e7610685 100644
--- a/v4l2-spec/v4l2.sgml
+++ b/v4l2-spec/v4l2.sgml
@@ -25,7 +25,7 @@
<book id="v4l2spec">
<bookinfo>
<title>Video for Linux Two API Specification</title>
- <subtitle>Revision 0.26</subtitle>
+ <subtitle>Revision 0.27</subtitle>
<authorgroup>
<author>
@@ -92,6 +92,18 @@ MPEG stream embedded, sliced VBI data format in this specification.
</author>
</authorgroup>
+ <author>
+ <firstname>Mauro</firstname>
+ <surname>Carvalho Chehab</surname>
+ <contrib>Documented libv4l, designed and added v4l2grab example
+ </contrib>
+ <affiliation>
+ <address>
+ <email>mchehab@redhat.com</email>
+ </address>
+ </affiliation>
+ </author>
+
<copyright>
<year>1999</year>
<year>2000</year>
@@ -105,12 +117,13 @@ MPEG stream embedded, sliced VBI data format in this specification.
<year>2008</year>
<year>2009</year>
<holder>Bill Dirks, Michael H. Schimek, Hans Verkuil, Martin
-Rubli, Andy Walls</holder>
+Rubli, Andy Walls, Mauro Carvalho Chehab</holder>
</copyright>
<legalnotice>
<para>This document is copyrighted &copy; 1999-2009 by Bill
-Dirks, Michael H. Schimek, Hans Verkuil, Martin Rubli, and Andy Walls.</para>
+Dirks, Michael H. Schimek, Hans Verkuil, Martin Rubli, Andy Walls and
+Mauro Carvalho Chehab.</para>
<para>Permission is granted to copy, distribute and/or modify
this document under the terms of the GNU Free Documentation License,
@@ -131,6 +144,13 @@ structs, ioctls) must be noted in more detail in the history chapter
applications. -->
<revision>
+ <revnumber>0.27</revnumber>
+ <date>2009-08-15</date>
+ <authorinitials>mcc</authorinitials>
+ <revremark>Added libv4l documentation and v4l2grab example.</revremark>
+ </revision>
+
+ <revision>
<revnumber>0.26</revnumber>
<date>2009-06-15</date>
<authorinitials>hv</authorinitials>
@@ -471,6 +491,10 @@ available here: <ulink url="http://linuxtv.org/downloads/video4linux/API/V4L2_AP
&sub-driver;
</chapter>
+ <chapter id="libv4l">
+ &sub-libv4l;
+ </chapter>
+
<chapter id="compat">
&sub-compat;
</chapter>
@@ -485,6 +509,14 @@ available here: <ulink url="http://linuxtv.org/downloads/video4linux/API/V4L2_AP
&sub-capture-c;
</appendix>
+ <appendix id="v4l2grab-example">
+ <title>Video Grabber example using libv4l</title>
+ <para>This program demonstrates how to grab V4L2 images in ppm format by
+using libv4l handlers. The advantage is that this grabber can potentially work
+with any V4L2 driver.</para>
+ &sub-v4l2grab-c;
+ </appendix>
+
&sub-fdl-appendix;
&sub-indices;
generated by cgit v1.2.3 (git 2.25.1) at 2025-05-19 01:05:34 +0000