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path: root/drivers/media/video/gspca/gspca.c
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Diffstat (limited to 'drivers/media/video/gspca/gspca.c')
-rw-r--r--drivers/media/video/gspca/gspca.c991
1 files changed, 768 insertions, 223 deletions
diff --git a/drivers/media/video/gspca/gspca.c b/drivers/media/video/gspca/gspca.c
index 04dbaba4b78..423ebbdc4b4 100644
--- a/drivers/media/video/gspca/gspca.c
+++ b/drivers/media/video/gspca/gspca.c
@@ -35,12 +35,18 @@
#include "gspca.h"
+/* option */
+#define GSPCA_HLP 0
+
+/* global values */
+#define DEF_NURBS 2 /* default number of URBs (mmap) */
+
MODULE_AUTHOR("Jean-Francois Moine <http://moinejf.free.fr>");
MODULE_DESCRIPTION("GSPCA USB Camera Driver");
MODULE_LICENSE("GPL");
-#define DRIVER_VERSION_NUMBER KERNEL_VERSION(0, 1, 1)
-static const char version[] = "0.1.1";
+#define DRIVER_VERSION_NUMBER KERNEL_VERSION(0, 2, 15)
+static const char version[] = "0.2.15";
static int video_nr = -1;
@@ -71,6 +77,229 @@ static void PDEBUG_MODE(char *txt, __u32 pixfmt, int w, int h)
#define PDEBUG_MODE(txt, pixfmt, w, h)
#endif
+/* specific memory types - !! should different from V4L2_MEMORY_xxx */
+#define GSPCA_MEMORY_NO 0 /* V4L2_MEMORY_xxx starts from 1 */
+#define GSPCA_MEMORY_READ 7
+
+#ifndef GSPCA_HLP
+#define BUF_ALL_FLAGS (V4L2_BUF_FLAG_QUEUED | V4L2_BUF_FLAG_DONE)
+#else
+#define GSPCA_BUF_FLAG_DECODE 0x1000 /* internal buffer flag */
+#define BUF_ALL_FLAGS (V4L2_BUF_FLAG_QUEUED | V4L2_BUF_FLAG_DONE \
+ | GSPCA_BUF_FLAG_DECODE)
+
+static int autostart = 4;
+module_param(autostart, int, 0644);
+MODULE_PARM_DESC(autostart,
+ "Automatically start the helper process");
+
+/* try to start the helper process */
+static void start_hlp(void)
+{
+ int ret;
+ static char *argv[] = {"gspca_hlp", NULL};
+ static char *env[] = {NULL};
+
+ if (autostart <= 0) {
+ if (autostart < 0)
+ PDEBUG(D_ERR|D_PROBE, "Too many helper restart");
+ return;
+ }
+ autostart--;
+ if (autostart == 0)
+ autostart = -1;
+ ret = call_usermodehelper("/sbin/gspca_hlp", argv, env,
+ UMH_WAIT_EXEC);
+ if (ret != 0)
+ PDEBUG(D_ERR|D_PROBE,
+ "/sbin/gspca_hlp start failed %d", ret);
+}
+
+/* /dev/gspca_hlp stuff */
+#include <linux/miscdevice.h>
+#include "gspca_hlp.h"
+
+/* !! possible decodings defined in decoder.c */
+static __u32 bayer_to_tb[] = {
+ V4L2_PIX_FMT_SBGGR8,
+ V4L2_PIX_FMT_YUYV,
+ V4L2_PIX_FMT_YUV420,
+ V4L2_PIX_FMT_RGB24,
+ V4L2_PIX_FMT_BGR24,
+ V4L2_PIX_FMT_RGB565,
+};
+static __u32 jpeg_to_tb[] = {
+ V4L2_PIX_FMT_JPEG,
+ V4L2_PIX_FMT_YUYV,
+ V4L2_PIX_FMT_YUV420,
+ V4L2_PIX_FMT_RGB24,
+ V4L2_PIX_FMT_BGR24,
+ V4L2_PIX_FMT_RGB565,
+};
+
+/* /dev/gspca_hlp device */
+struct hlp_dev {
+ struct gspca_dev *gspca_dev; /* associated device */
+ struct gspca_frame *frame; /* frame being decoded */
+ __u32 pixfmt; /* webcam pixel format */
+ atomic_t nevent; /* nb of frames ready to decode */
+ wait_queue_head_t wq; /* wait queue */
+ char fr_d; /* next frame to decode */
+} *hlp;
+
+static int hlp_open(struct inode *inode, struct file *file)
+{
+ struct hlp_dev *hlp_dev;
+
+ PDEBUG(D_CONF, "hlp open");
+ if (hlp != 0)
+ return -EBUSY;
+ hlp_dev = kzalloc(sizeof *hlp_dev, GFP_KERNEL);
+ if (hlp_dev == NULL) {
+ err("couldn't kzalloc hlp struct");
+ return -EIO;
+ }
+ init_waitqueue_head(&hlp_dev->wq);
+ file->private_data = hlp_dev;
+ hlp = hlp_dev;
+ return 0;
+}
+
+static int hlp_close(struct inode *inode, struct file *file)
+{
+ struct gspca_dev *gspca_dev;
+ int mode;
+
+ PDEBUG(D_CONF, "hlp close");
+ file->private_data = NULL;
+
+ /* stop decoding */
+ gspca_dev = hlp->gspca_dev;
+ if (gspca_dev != 0) {
+ mode = gspca_dev->curr_mode;
+ gspca_dev->pixfmt = gspca_dev->cam.cam_mode[mode].pixfmt;
+ }
+
+ /* destroy the helper structure */
+ kfree(hlp);
+ hlp = 0;
+
+ /* try to restart the helper process */
+ start_hlp();
+ return 0;
+}
+
+static ssize_t hlp_read(struct file *file, char __user *buf,
+ size_t cnt, loff_t *ppos)
+{
+ struct hlp_dev *hlp_dev = file->private_data;
+ struct gspca_dev *gspca_dev;
+ struct gspca_frame *frame;
+ struct gspca_hlp_read_hd head;
+ int i, j, len, ret;
+
+ PDEBUG(D_FRAM, "hlp read (%d)", cnt);
+
+ /* check / wait till a frame is ready */
+ for (;;) {
+ gspca_dev = hlp_dev->gspca_dev;
+ if (gspca_dev != 0 && gspca_dev->streaming) {
+ i = hlp_dev->fr_d; /* frame to decode */
+ j = gspca_dev->fr_queue[i];
+ frame = &gspca_dev->frame[j];
+ if (frame->v4l2_buf.flags & GSPCA_BUF_FLAG_DECODE)
+ break;
+ }
+ ret = wait_event_interruptible(hlp_dev->wq,
+ atomic_read(&hlp_dev->nevent) > 0);
+ if (ret < 0) { /* helper process is killed */
+ autostart = 0; /* don't restart it */
+ return ret;
+ }
+ }
+ atomic_dec(&hlp_dev->nevent);
+ hlp_dev->fr_d = (i + 1) % gspca_dev->nframes;
+ PDEBUG(D_FRAM, "hlp read q:%d i:%d d:%d o:%d",
+ gspca_dev->fr_q,
+ gspca_dev->fr_i,
+ hlp_dev->fr_d,
+ gspca_dev->fr_o);
+
+ hlp_dev->frame = frame; /* memorize the current frame */
+ len = frame->v4l2_buf.bytesused;
+ if (cnt < sizeof head - sizeof head.data + len)
+/*fixme: special errno?*/
+ return -EINVAL;
+ head.pixfmt_out = gspca_dev->pixfmt;
+ head.pixfmt_in = hlp_dev->pixfmt;
+ head.width = gspca_dev->width;
+ head.height = gspca_dev->height;
+ copy_to_user(buf, &head, sizeof head);
+ copy_to_user(buf + sizeof head - sizeof head.data,
+ frame->data, len);
+ return sizeof head - sizeof head.data + len;
+}
+
+static ssize_t hlp_write(struct file *file,
+ const char __user *buf,
+ size_t cnt, loff_t *ppos)
+{
+ struct hlp_dev *hlp_dev = file->private_data;
+ struct gspca_dev *gspca_dev;
+ struct gspca_frame *frame;
+
+ PDEBUG(D_FRAM, "hlp write (%d)", cnt);
+ gspca_dev = hlp_dev->gspca_dev;
+ if (gspca_dev == 0)
+ return cnt;
+ if (mutex_lock_interruptible(&gspca_dev->queue_lock))
+ return -ERESTARTSYS;
+ if (!gspca_dev->streaming)
+ goto out;
+ frame = hlp_dev->frame;
+ hlp_dev->frame = 0;
+ if (frame == 0)
+ goto out;
+ if (cnt > frame->v4l2_buf.length) {
+ PDEBUG(D_ERR|D_FRAM, "bad frame size %d - %d",
+ cnt, frame->v4l2_buf.length);
+ cnt = -EINVAL;
+ goto out;
+ }
+ copy_from_user(frame->data, buf, cnt);
+ frame->v4l2_buf.bytesused = cnt;
+ frame->v4l2_buf.flags &= ~(V4L2_BUF_FLAG_QUEUED
+ | GSPCA_BUF_FLAG_DECODE);
+ frame->v4l2_buf.flags |= V4L2_BUF_FLAG_DONE;
+ mutex_unlock(&gspca_dev->queue_lock);
+ atomic_inc(&gspca_dev->nevent);
+ wake_up_interruptible(&gspca_dev->wq); /* event = new frame */
+ PDEBUG(D_FRAM, "hlp write q:%d i:%d d:%d o:%d",
+ gspca_dev->fr_q,
+ gspca_dev->fr_i,
+ hlp_dev->fr_d,
+ gspca_dev->fr_o);
+ return cnt;
+out:
+ mutex_unlock(&gspca_dev->queue_lock);
+ return cnt;
+}
+
+static struct file_operations hlp_fops = {
+ .owner = THIS_MODULE,
+ .open = hlp_open,
+ .release = hlp_close,
+ .read = hlp_read,
+ .write = hlp_write,
+ .llseek = no_llseek
+};
+static struct miscdevice hlp_device = {
+ .minor = MISC_DYNAMIC_MINOR,
+ .name = "gspca_hlp",
+ .fops = &hlp_fops,
+};
+#endif
+
/*
* VMA operations.
*/
@@ -96,22 +325,16 @@ static struct vm_operations_struct gspca_vm_ops = {
};
/*
- * ISOC message interrupt from the USB device
- *
- * Analyse each packet and call the subdriver for doing the copy
- * to the frame buffer.
+ * fill a video frame from an URB and resubmit
*/
-static void isoc_irq(struct urb *urb)
+static void fill_frame(struct gspca_dev *gspca_dev,
+ struct urb *urb)
{
- struct gspca_dev *gspca_dev = (struct gspca_dev *) urb->context;
struct gspca_frame *frame;
unsigned char *data; /* address of data in the iso message */
int i, j, len, st;
cam_pkt_op pkt_scan;
- PDEBUG(D_PACK, "isoc irq");
- if (!gspca_dev->streaming)
- return;
pkt_scan = gspca_dev->sd_desc->pkt_scan;
for (i = 0; i < urb->number_of_packets; i++) {
@@ -119,8 +342,7 @@ static void isoc_irq(struct urb *urb)
j = gspca_dev->fr_i;
j = gspca_dev->fr_queue[j];
frame = &gspca_dev->frame[j];
- if ((frame->v4l2_buf.flags
- & (V4L2_BUF_FLAG_QUEUED | V4L2_BUF_FLAG_DONE))
+ if ((frame->v4l2_buf.flags & BUF_ALL_FLAGS)
!= V4L2_BUF_FLAG_QUEUED) {
gspca_dev->last_packet_type = DISCARD_PACKET;
break;
@@ -147,6 +369,7 @@ static void isoc_irq(struct urb *urb)
}
/* resubmit the URB */
+/*fixme: don't do that when userptr and too many URBs sent*/
urb->status = 0;
st = usb_submit_urb(urb, GFP_ATOMIC);
if (st < 0)
@@ -154,9 +377,78 @@ static void isoc_irq(struct urb *urb)
}
/*
+ * ISOC message interrupt from the USB device
+ *
+ * Analyse each packet and call the subdriver for copy
+ * to the frame buffer.
+ *
+ * There are 2 functions:
+ * - the first one (isoc_irq_mmap) is used when the application
+ * buffers are mapped. The frame detection and copy is done
+ * at interrupt level.
+ * - the second one (isoc_irq_user) is used when the application
+ * buffers are in user space (userptr). The frame detection
+ * and copy is done by the application.
+ */
+static void isoc_irq_mmap(struct urb *urb)
+{
+ struct gspca_dev *gspca_dev = (struct gspca_dev *) urb->context;
+
+ PDEBUG(D_PACK, "isoc irq mmap");
+ if (!gspca_dev->streaming)
+ return;
+ fill_frame(gspca_dev, urb);
+}
+
+static void isoc_irq_user(struct urb *urb)
+{
+ struct gspca_dev *gspca_dev = (struct gspca_dev *) urb->context;
+ int i;
+
+ PDEBUG(D_PACK, "isoc irq user");
+ if (!gspca_dev->streaming)
+ return;
+
+ i = gspca_dev->urb_in % gspca_dev->nurbs;
+ if (urb != gspca_dev->urb[i]) {
+ PDEBUG(D_ERR|D_PACK, "urb out of sequence");
+ return; /* should never occur */
+ }
+
+ gspca_dev->urb_in++;
+ atomic_inc(&gspca_dev->nevent); /* new event */
+ wake_up_interruptible(&gspca_dev->wq);
+/*fixme: submit a new URBs until urb_in == urb_out (% nurbs)*/
+}
+
+/*
+ * treat the isoc messages
+ *
+ * This routine is called by the application (case userptr).
+ */
+static void isoc_transfer(struct gspca_dev *gspca_dev)
+{
+ struct urb *urb;
+ int i;
+
+ for (;;) {
+ i = gspca_dev->urb_out;
+ PDEBUG(D_PACK, "isoc transf i:%d o:%d", gspca_dev->urb_in, i);
+ if (i == gspca_dev->urb_in) /* isoc message to read */
+ break; /* no (more) message */
+ atomic_dec(&gspca_dev->nevent);
+/*PDEBUG(D_PACK, "isoc_trf nevent: %d", atomic_read(&gspca_dev->nevent));*/
+ gspca_dev->urb_out = i + 1; /* message treated */
+ urb = gspca_dev->urb[i % gspca_dev->nurbs];
+ fill_frame(gspca_dev, urb);
+ }
+}
+
+/*
* add data to the current frame
*
- * This function is called by the subdrivers at interrupt level.
+ * This function is called by the subdrivers at interrupt level
+ * or user level.
* To build a frame, these ones must add
* - one FIRST_PACKET
* - 0 or many INTER_PACKETs
@@ -177,9 +469,8 @@ struct gspca_frame *gspca_frame_add(struct gspca_dev *gspca_dev,
/* when start of a new frame, if the current frame buffer
* is not queued, discard the whole frame */
if (packet_type == FIRST_PACKET) {
- if ((frame->v4l2_buf.flags
- & (V4L2_BUF_FLAG_QUEUED | V4L2_BUF_FLAG_DONE))
- != V4L2_BUF_FLAG_QUEUED) {
+ if ((frame->v4l2_buf.flags & BUF_ALL_FLAGS)
+ != V4L2_BUF_FLAG_QUEUED) {
gspca_dev->last_packet_type = DISCARD_PACKET;
return frame;
}
@@ -187,10 +478,11 @@ struct gspca_frame *gspca_frame_add(struct gspca_dev *gspca_dev,
jiffies_to_timeval(get_jiffies_64(),
&frame->v4l2_buf.timestamp);
frame->v4l2_buf.sequence = ++gspca_dev->sequence;
- } else if (gspca_dev->last_packet_type == DISCARD_PACKET)
+ } else if (gspca_dev->last_packet_type == DISCARD_PACKET) {
return frame;
+ }
- /* append the packet in the frame buffer */
+ /* append the packet to the frame buffer */
if (len > 0) {
if (frame->data_end - frame->data + len
> frame->v4l2_buf.length) {
@@ -211,12 +503,25 @@ struct gspca_frame *gspca_frame_add(struct gspca_dev *gspca_dev,
/* if last packet, wake the application and advance in the queue */
if (packet_type == LAST_PACKET) {
frame->v4l2_buf.bytesused = frame->data_end - frame->data;
+#ifndef GSPCA_HLP
frame->v4l2_buf.flags &= ~V4L2_BUF_FLAG_QUEUED;
frame->v4l2_buf.flags |= V4L2_BUF_FLAG_DONE;
atomic_inc(&gspca_dev->nevent);
wake_up_interruptible(&gspca_dev->wq); /* event = new frame */
- i = gspca_dev->fr_i;
- i = (i + 1) % gspca_dev->nframes;
+#else /*GSPCA_HLP*/
+ if (hlp != 0 && hlp->gspca_dev == gspca_dev) {
+ frame->v4l2_buf.flags |= GSPCA_BUF_FLAG_DECODE;
+ atomic_inc(&hlp->nevent);
+ wake_up_interruptible(&hlp->wq);
+ } else {
+ frame->v4l2_buf.flags &= ~V4L2_BUF_FLAG_QUEUED;
+ frame->v4l2_buf.flags |= V4L2_BUF_FLAG_DONE;
+ atomic_inc(&gspca_dev->nevent);
+ wake_up_interruptible(&gspca_dev->wq); /* new frame */
+ }
+#endif /*GSPCA_HLP*/
+ i = (gspca_dev->fr_i + 1) % gspca_dev->nframes;
+ gspca_dev->fr_i = i;
PDEBUG(D_FRAM, "frame complete len:%d q:%d i:%d o:%d",
frame->v4l2_buf.bytesused,
gspca_dev->fr_q,
@@ -224,7 +529,6 @@ struct gspca_frame *gspca_frame_add(struct gspca_dev *gspca_dev,
gspca_dev->fr_o);
j = gspca_dev->fr_queue[i];
frame = &gspca_dev->frame[j];
- gspca_dev->fr_i = i;
}
return frame;
}
@@ -245,7 +549,7 @@ static void *rvmalloc(unsigned long size)
void *mem;
unsigned long adr;
- size = PAGE_ALIGN(size);
+/* size = PAGE_ALIGN(size); (already done) */
mem = vmalloc_32(size);
if (mem != 0) {
memset(mem, 0, size);
@@ -274,27 +578,65 @@ static void rvfree(void *mem, unsigned long size)
vfree(mem);
}
+static __u32 get_v4l2_depth(__u32 pixfmt)
+{
+ switch (pixfmt) {
+ case V4L2_PIX_FMT_BGR32:
+ case V4L2_PIX_FMT_RGB32:
+ return 32;
+ case V4L2_PIX_FMT_RGB24: /* 'RGB3' */
+ case V4L2_PIX_FMT_BGR24:
+ return 24;
+ case V4L2_PIX_FMT_RGB565: /* 'RGBP' */
+ case V4L2_PIX_FMT_YUYV: /* 'YUYV' packed 4.2.2 */
+ case V4L2_PIX_FMT_YYUV: /* 'YYUV' */
+ return 16;
+ case V4L2_PIX_FMT_YUV420: /* 'YU12' planar 4.2.0 */
+ return 12;
+ case V4L2_PIX_FMT_MJPEG:
+ case V4L2_PIX_FMT_JPEG:
+ case V4L2_PIX_FMT_SBGGR8: /* 'BA81' Bayer */
+ return 8;
+ }
+ PDEBUG(D_ERR|D_CONF, "Unknown pixel format %c%c%c%c",
+ pixfmt & 0xff,
+ (pixfmt >> 8) & 0xff,
+ (pixfmt >> 16) & 0xff,
+ pixfmt >> 24);
+ return -EINVAL;
+}
+
+static int gspca_get_buff_size(struct gspca_dev *gspca_dev)
+{
+ unsigned int size;
+
+ size = gspca_dev->width * gspca_dev->height
+ * get_v4l2_depth(gspca_dev->pixfmt) / 8;
+ if (!size)
+ return -ENOMEM;
+ return size;
+}
+
static int frame_alloc(struct gspca_dev *gspca_dev,
- unsigned int count,
- unsigned int frsz,
- enum v4l2_memory memory)
+ unsigned int count)
{
- int i, ret = 0;
+ struct gspca_frame *frame;
+ unsigned int frsz;
+ int i;
+ frsz = gspca_get_buff_size(gspca_dev);
+ if (frsz < 0)
+ return frsz;
PDEBUG(D_STREAM, "frame alloc frsz: %d", frsz);
- if (gspca_dev->nframes != 0) {
- PDEBUG(D_ERR|D_STREAM, "alloc frame already done");
- return -EBUSY;
- }
if (count > GSPCA_MAX_FRAMES)
count = GSPCA_MAX_FRAMES;
- /* if compressed, reduce the buffer size */
+ /* if compressed (JPEG), reduce the buffer size */
if (gspca_is_compressed(gspca_dev->pixfmt))
- frsz = (frsz * comp_fac) / 100;
+ frsz = (frsz * comp_fac) / 100 + 600; /* plus JPEG header */
frsz = PAGE_ALIGN(frsz);
PDEBUG(D_STREAM, "new fr_sz: %d", frsz);
gspca_dev->frsz = frsz;
- if (memory == V4L2_MEMORY_MMAP) {
+ if (gspca_dev->memory == V4L2_MEMORY_MMAP) {
gspca_dev->frbuf = rvmalloc(frsz * count);
if (!gspca_dev->frbuf) {
err("frame alloc failed");
@@ -303,25 +645,36 @@ static int frame_alloc(struct gspca_dev *gspca_dev,
}
gspca_dev->nframes = count;
for (i = 0; i < count; i++) {
- gspca_dev->frame[i].v4l2_buf.index = i;
- gspca_dev->frame[i].v4l2_buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
- gspca_dev->frame[i].v4l2_buf.flags = 0;
- gspca_dev->frame[i].v4l2_buf.field = V4L2_FIELD_NONE;
- gspca_dev->frame[i].v4l2_buf.length = frsz;
- gspca_dev->frame[i].v4l2_buf.memory = memory;
- if (memory == V4L2_MEMORY_MMAP) {
- gspca_dev->frame[i].data
- = gspca_dev->frame[i].data_end
- = gspca_dev->frbuf + i * frsz;
- gspca_dev->frame[i].v4l2_buf.m.offset = i * frsz;
+ frame = &gspca_dev->frame[i];
+ frame->v4l2_buf.index = i;
+ frame->v4l2_buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ frame->v4l2_buf.flags = 0;
+ frame->v4l2_buf.field = V4L2_FIELD_NONE;
+ frame->v4l2_buf.length = frsz;
+ frame->v4l2_buf.memory = gspca_dev->memory;
+ frame->v4l2_buf.sequence = 0;
+ if (gspca_dev->memory == V4L2_MEMORY_MMAP) {
+ frame->data = frame->data_end =
+ gspca_dev->frbuf + i * frsz;
+ frame->v4l2_buf.m.offset = i * frsz;
}
- gspca_dev->frame[i].v4l2_buf.flags = 0; /* buf in app space */
}
gspca_dev->fr_i = gspca_dev->fr_o = gspca_dev->fr_q = 0;
+#ifdef GSPCA_HLP
+ {
+ struct hlp_dev *hlp_dev;
+
+ hlp_dev = hlp;
+ if (hlp != 0 && hlp_dev->gspca_dev == gspca_dev) {
+ hlp_dev->fr_d = 0;
+ atomic_set(&hlp_dev->nevent, 0);
+ }
+ }
+#endif /*GSPCA_HLP*/
gspca_dev->last_packet_type = DISCARD_PACKET;
gspca_dev->sequence = 0;
atomic_set(&gspca_dev->nevent, 0);
- return ret;
+ return 0;
}
static void frame_free(struct gspca_dev *gspca_dev)
@@ -339,16 +692,16 @@ static void frame_free(struct gspca_dev *gspca_dev)
gspca_dev->nframes = 0;
}
-static int gspca_kill_transfer(struct gspca_dev *gspca_dev)
+static void destroy_urbs(struct gspca_dev *gspca_dev)
{
struct urb *urb;
unsigned int i;
PDEBUG(D_STREAM, "kill transfer");
- for (i = 0; i < NURBS; ++i) {
+ for (i = 0; i < MAX_NURBS; ++i) {
urb = gspca_dev->urb[i];
if (urb == NULL)
- continue;
+ break;
gspca_dev->urb[i] = NULL;
usb_kill_urb(urb);
@@ -359,7 +712,6 @@ static int gspca_kill_transfer(struct gspca_dev *gspca_dev)
urb->transfer_dma);
usb_free_urb(urb);
}
- return 0;
}
/*
@@ -417,7 +769,7 @@ struct usb_host_endpoint *get_isoc_ep(struct gspca_dev *gspca_dev)
err("set interface err %d", ret);
return NULL;
}
- gspca_dev->alt = i;
+ gspca_dev->alt = i; /* memorize the current alt setting */
return ep;
}
@@ -428,28 +780,28 @@ static int create_urbs(struct gspca_dev *gspca_dev,
struct usb_host_endpoint *ep)
{
struct urb *urb;
- int n, i, psize, npkt, bsize;
+ int n, nurbs, i, psize, npkt, bsize;
+ usb_complete_t usb_complete;
/* calculate the packet size and the number of packets */
- /* the URB buffer size must be a power of 2 */
psize = le16_to_cpu(ep->desc.wMaxPacketSize);
+
/* See paragraph 5.9 / table 5-11 of the usb 2.0 spec. */
psize = (psize & 0x07ff) * (1 + ((psize >> 11) & 3));
npkt = ISO_MAX_SIZE / psize;
if (npkt > ISO_MAX_PKT)
npkt = ISO_MAX_PKT;
bsize = psize * npkt;
- for (n = ISO_MAX_SIZE; n > 0; n >>= 1) {
- if (n & bsize) /* !! assume ISO_MAX_SIZE is a power of 2 */
- break;
- }
- if (n != 0) {
- npkt = n / psize;
- bsize = psize * npkt;
- }
PDEBUG(D_STREAM,
"isoc %d pkts size %d (bsize:%d)", npkt, psize, bsize);
- for (n = 0; n < NURBS; n++) {
+/*fixme:change for userptr*/
+/*fixme:don't submit all URBs when userptr*/
+ gspca_dev->nurbs = nurbs = DEF_NURBS;
+ if (gspca_dev->memory == V4L2_MEMORY_MMAP)
+ usb_complete = isoc_irq_mmap;
+ else
+ usb_complete = isoc_irq_user;
+ for (n = 0; n < nurbs; n++) {
urb = usb_alloc_urb(npkt, GFP_KERNEL);
if (!urb) {
err("usb_alloc_urb failed");
@@ -462,7 +814,7 @@ static int create_urbs(struct gspca_dev *gspca_dev,
if (urb->transfer_buffer == NULL) {
usb_free_urb(urb);
- gspca_kill_transfer(gspca_dev);
+ destroy_urbs(gspca_dev);
err("usb_buffer_urb failed");
return -ENOMEM;
}
@@ -474,7 +826,7 @@ static int create_urbs(struct gspca_dev *gspca_dev,
urb->transfer_flags = URB_ISO_ASAP
| URB_NO_TRANSFER_DMA_MAP;
urb->interval = ep->desc.bInterval;
- urb->complete = isoc_irq;
+ urb->complete = usb_complete;
urb->number_of_packets = npkt;
urb->transfer_buffer_length = bsize;
for (i = 0; i < npkt; i++) {
@@ -482,6 +834,7 @@ static int create_urbs(struct gspca_dev *gspca_dev,
urb->iso_frame_desc[i].offset = psize * i;
}
}
+ gspca_dev->urb_in = gspca_dev->urb_out = 0;
return 0;
}
@@ -490,18 +843,17 @@ static int create_urbs(struct gspca_dev *gspca_dev,
*/
static int gspca_init_transfer(struct gspca_dev *gspca_dev)
{
- struct usb_interface *intf;
struct usb_host_endpoint *ep;
int n, ret;
if (mutex_lock_interruptible(&gspca_dev->usb_lock))
return -ERESTARTSYS;
- /* set the max alternate setting and loop until urb submit succeeds */
- intf = usb_ifnum_to_if(gspca_dev->dev, gspca_dev->iface);
- gspca_dev->alt = intf->num_altsetting;
+ /* set the higher alternate setting and
+ * loop until urb submit succeeds */
+ gspca_dev->alt = gspca_dev->nbalt;
for (;;) {
- PDEBUG(D_STREAM, "init transfer nbalt %d", gspca_dev->alt);
+ PDEBUG(D_STREAM, "init transfer alt %d", gspca_dev->alt);
ep = get_isoc_ep(gspca_dev);
if (ep == NULL) {
ret = -EIO;
@@ -517,13 +869,13 @@ static int gspca_init_transfer(struct gspca_dev *gspca_dev)
atomic_set(&gspca_dev->nevent, 0);
/* submit the URBs */
- for (n = 0; n < NURBS; n++) {
+ for (n = 0; n < gspca_dev->nurbs; n++) {
ret = usb_submit_urb(gspca_dev->urb[n], GFP_KERNEL);
if (ret < 0) {
PDEBUG(D_ERR|D_STREAM,
"usb_submit_urb [%d] err %d", n, ret);
gspca_dev->streaming = 0;
- gspca_kill_transfer(gspca_dev);
+ destroy_urbs(gspca_dev);
if (ret == -ENOSPC)
break; /* try the previous alt */
goto out;
@@ -551,21 +903,32 @@ static int gspca_set_alt0(struct gspca_dev *gspca_dev)
static void gspca_stream_off(struct gspca_dev *gspca_dev)
{
gspca_dev->streaming = 0;
+ atomic_set(&gspca_dev->nevent, 0);
+#ifdef GSPCA_HLP
+ {
+ struct hlp_dev *hlp_dev;
+
+ hlp_dev = hlp;
+ if (hlp_dev != 0
+ && hlp_dev->gspca_dev == gspca_dev)
+ atomic_set(&hlp_dev->nevent, 0);
+ }
+#endif
if (gspca_dev->present) {
gspca_dev->sd_desc->stopN(gspca_dev);
- gspca_kill_transfer(gspca_dev);
+ destroy_urbs(gspca_dev);
gspca_set_alt0(gspca_dev);
gspca_dev->sd_desc->stop0(gspca_dev);
PDEBUG(D_STREAM, "stream off OK");
} else {
- gspca_kill_transfer(gspca_dev);
+ destroy_urbs(gspca_dev);
atomic_inc(&gspca_dev->nevent);
wake_up_interruptible(&gspca_dev->wq);
PDEBUG(D_ERR|D_STREAM, "stream off no device ??");
}
}
-static int gspca_set_default_mode(struct gspca_dev *gspca_dev)
+static void gspca_set_default_mode(struct gspca_dev *gspca_dev)
{
int i;
@@ -574,7 +937,6 @@ static int gspca_set_default_mode(struct gspca_dev *gspca_dev)
gspca_dev->width = gspca_dev->cam.cam_mode[i].width;
gspca_dev->height = gspca_dev->cam.cam_mode[i].height;
gspca_dev->pixfmt = gspca_dev->cam.cam_mode[i].pixfmt;
- return 0;
}
static int wxh_to_mode(struct gspca_dev *gspca_dev,
@@ -582,46 +944,14 @@ static int wxh_to_mode(struct gspca_dev *gspca_dev,
{
int i;
- for (i = gspca_dev->cam.nmodes - 1; --i >= 0; ) {
- if (width > gspca_dev->cam.cam_mode[i].width)
+ for (i = gspca_dev->cam.nmodes; --i > 0; ) {
+ if (width >= gspca_dev->cam.cam_mode[i].width
+ && height >= gspca_dev->cam.cam_mode[i].height)
break;
}
- i++;
- while (i < gspca_dev->cam.nmodes - 1
- && width == gspca_dev->cam.cam_mode[i + 1].width
- && height < gspca_dev->cam.cam_mode[i + 1].height)
- i++;
return i;
}
-static __u32 get_v4l2_depth(__u32 pixfmt)
-{
- switch (pixfmt) {
- case V4L2_PIX_FMT_BGR32:
- case V4L2_PIX_FMT_RGB32:
- return 32;
- case V4L2_PIX_FMT_RGB24:
- case V4L2_PIX_FMT_BGR24:
- return 24;
- case V4L2_PIX_FMT_RGB565:
- case V4L2_PIX_FMT_YUYV: /* packed 4.2.2 */
- case V4L2_PIX_FMT_YYUV:
- return 16;
- case V4L2_PIX_FMT_YUV420: /* planar 4.2.0 */
- return 12;
- case V4L2_PIX_FMT_MJPEG:
- case V4L2_PIX_FMT_JPEG:
- case V4L2_PIX_FMT_SBGGR8: /* Bayer */
- return 8;
- }
- PDEBUG(D_ERR|D_CONF, "Unknown pixel format %c%c%c%c",
- pixfmt & 0xff,
- (pixfmt >> 8) & 0xff,
- (pixfmt >> 16) & 0xff,
- pixfmt >> 24);
- return -EINVAL;
-}
-
/*
* search a mode with the right pixel format
*/
@@ -649,11 +979,15 @@ static int vidioc_enum_fmt_cap(struct file *file, void *priv,
struct v4l2_fmtdesc *fmtdesc)
{
struct gspca_dev *gspca_dev = priv;
- int i, j, index;
+ int i;
+#ifndef GSPCA_HLP
+ int j, index;
__u32 fmt_tb[8];
+#endif
PDEBUG(D_CONF, "enum fmt cap");
+#ifndef GSPCA_HLP
/* give an index to each format */
index = 0;
j = 0;
@@ -676,10 +1010,40 @@ static int vidioc_enum_fmt_cap(struct file *file, void *priv,
if (i < 0)
return -EINVAL; /* no more format */
- fmtdesc->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
fmtdesc->pixelformat = fmt_tb[index];
if (gspca_is_compressed(fmt_tb[index]))
fmtdesc->flags = V4L2_FMT_FLAG_COMPRESSED;
+#else /*GSPCA_HLP*/
+ /* !! code tied to the decoding functions in decoder.c */
+ i = gspca_dev->cam.nmodes - 1;
+ if (fmtdesc->index == 0) { /* (assume one format per subdriver) */
+ fmtdesc->pixelformat = gspca_dev->cam.cam_mode[i].pixfmt;
+ if (gspca_is_compressed(fmtdesc->pixelformat))
+ fmtdesc->flags = V4L2_FMT_FLAG_COMPRESSED;
+ } else {
+ if (hlp == 0
+ || (hlp->gspca_dev != 0
+ && hlp->gspca_dev != gspca_dev))
+ return -EINVAL;
+ switch (gspca_dev->cam.cam_mode[i].pixfmt) {
+ case V4L2_PIX_FMT_JPEG:
+ if (fmtdesc->index >= sizeof jpeg_to_tb
+ / sizeof jpeg_to_tb[0])
+ return -EINVAL;
+ fmtdesc->pixelformat = jpeg_to_tb[fmtdesc->index];
+ break;
+ case V4L2_PIX_FMT_SBGGR8:
+ if (fmtdesc->index >= sizeof bayer_to_tb
+ / sizeof bayer_to_tb[0])
+ return -EINVAL;
+ fmtdesc->pixelformat = bayer_to_tb[fmtdesc->index];
+ break;
+ default:
+ return -EINVAL;
+ }
+ }
+#endif /*GSPCA_HLP*/
+ fmtdesc->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
fmtdesc->description[0] = fmtdesc->pixelformat & 0xff;
fmtdesc->description[1] = (fmtdesc->pixelformat >> 8) & 0xff;
fmtdesc->description[2] = (fmtdesc->pixelformat >> 16) & 0xff;
@@ -688,22 +1052,26 @@ static int vidioc_enum_fmt_cap(struct file *file, void *priv,
return 0;
}
-static int gspca_get_buff_size(struct gspca_dev *gspca_dev)
-{
- unsigned int size;
-
- size = gspca_dev->width * gspca_dev->height
- * get_v4l2_depth(gspca_dev->pixfmt) / 8;
- if (!size)
- return -ENOMEM;
- return size;
-}
-
static int vidioc_g_fmt_cap(struct file *file, void *priv,
struct v4l2_format *fmt)
{
struct gspca_dev *gspca_dev = priv;
+#ifdef GSPCA_HLP
+ int i;
+
+ /* if the pixel format is not the one of the device and
+ * if the helper is inactive or busy, restore */
+ i = gspca_dev->curr_mode;
+ if (gspca_dev->pixfmt != gspca_dev->cam.cam_mode[i].pixfmt) {
+ struct hlp_dev *hlp_dev;
+
+ hlp_dev = hlp;
+ if (hlp_dev == 0 || hlp_dev->gspca_dev != gspca_dev)
+ gspca_dev->pixfmt = gspca_dev->cam.cam_mode[i].pixfmt;
+ }
+#endif /*GSPCA_HLP*/
+
fmt->fmt.pix.width = gspca_dev->width;
fmt->fmt.pix.height = gspca_dev->height;
fmt->fmt.pix.pixelformat = gspca_dev->pixfmt;
@@ -733,6 +1101,10 @@ static int try_fmt_cap(struct gspca_dev *gspca_dev,
w = fmt->fmt.pix.width;
h = fmt->fmt.pix.height;
+
+ /* (luvcview problem) */
+ if (fmt->fmt.pix.pixelformat == V4L2_PIX_FMT_MJPEG)
+ fmt->fmt.pix.pixelformat = V4L2_PIX_FMT_JPEG;
#ifdef GSPCA_DEBUG
if (gspca_debug & D_CONF)
PDEBUG_MODE("try fmt cap", fmt->fmt.pix.pixelformat, w, h);
@@ -746,13 +1118,46 @@ static int try_fmt_cap(struct gspca_dev *gspca_dev,
/* else, search the closest mode with the same pixel format */
mode2 = gspca_get_mode(gspca_dev, mode,
fmt->fmt.pix.pixelformat);
- if (mode2 >= 0)
+ if (mode2 >= 0) {
mode = mode2;
- else {
+ } else {
+ __u32 pixfmt;
+
+ pixfmt = gspca_dev->cam.cam_mode[mode].pixfmt;
+#ifndef GSPCA_HLP
/* no chance, return this mode */
- fmt->fmt.pix.pixelformat
- = gspca_dev->cam.cam_mode[mode].pixfmt;
+ fmt->fmt.pix.pixelformat = pixfmt;
+#else /*GSPCA_HLP*/
+ if (hlp != 0
+ && (hlp->gspca_dev == 0
+ || hlp->gspca_dev == gspca_dev)
+/* decoding works for JPEG and Bayer only */
+ && (pixfmt == V4L2_PIX_FMT_JPEG
+ || pixfmt == V4L2_PIX_FMT_SBGGR8)) {
+ switch (fmt->fmt.pix.pixelformat) {
+ case V4L2_PIX_FMT_YUYV: /* 'YUYV' */
+ case V4L2_PIX_FMT_BGR24: /* 'BGR3' */
+ case V4L2_PIX_FMT_RGB24: /* 'RGB3' */
+ case V4L2_PIX_FMT_YUV420: /* 'YU12' */
+ case V4L2_PIX_FMT_RGB565: /* 'RGBP' */
+ break;
+ default: {
+ /* return any of the supported fmt's */
+ __u8 u;
+
+ u = get_jiffies_64();
+ u %= sizeof bayer_to_tb
+ / sizeof bayer_to_tb[0] - 1;
+ fmt->fmt.pix.pixelformat =
+ bayer_to_tb[u + 1];
+ break;
+ }
+ }
+ } else {
+ fmt->fmt.pix.pixelformat = pixfmt;
+ }
+#endif /*GSPCA_HLP*/
#ifdef GSPCA_DEBUG
if (gspca_debug & D_CONF) {
PDEBUG_MODE("new format",
@@ -791,7 +1196,7 @@ static int vidioc_s_fmt_cap(struct file *file, void *priv,
struct v4l2_format *fmt)
{
struct gspca_dev *gspca_dev = priv;
- int ret, was_streaming;
+ int ret;
#ifdef GSPCA_DEBUG
if (gspca_debug & D_CONF) {
@@ -802,32 +1207,56 @@ static int vidioc_s_fmt_cap(struct file *file, void *priv,
#endif
if (mutex_lock_interruptible(&gspca_dev->queue_lock))
return -ERESTARTSYS;
+
ret = try_fmt_cap(gspca_dev, fmt);
if (ret < 0)
goto out;
+ if (gspca_dev->nframes != 0
+ && fmt->fmt.pix.sizeimage > gspca_dev->frsz) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+#ifndef GSPCA_HLP
if (ret == gspca_dev->curr_mode)
goto out; /* same mode */
- was_streaming = gspca_dev->streaming;
- if (was_streaming) {
- if (gspca_dev->capt_file != 0
- && gspca_dev->capt_file != file) {
- ret = -EBUSY;
- goto out;
- }
- if (mutex_lock_interruptible(&gspca_dev->usb_lock)) {
- ret = -ERESTARTSYS;
- goto out;
- }
- gspca_stream_off(gspca_dev);
- mutex_unlock(&gspca_dev->usb_lock);
+#else /*GSPCA_HLP*/
+ if (ret == gspca_dev->curr_mode
+ && gspca_dev->pixfmt == fmt->fmt.pix.pixelformat)
+ goto out; /* same mode */
+#endif /*GSPCA_HLP*/
+
+ if (gspca_dev->streaming) {
+ ret = -EBUSY;
+ goto out;
}
gspca_dev->width = fmt->fmt.pix.width;
gspca_dev->height = fmt->fmt.pix.height;
gspca_dev->pixfmt = fmt->fmt.pix.pixelformat;
gspca_dev->curr_mode = ret;
- if (was_streaming)
- ret = gspca_init_transfer(gspca_dev);
+
+#ifdef GSPCA_HLP
+ /* if frame decoding is required */
+ if (gspca_dev->pixfmt != gspca_dev->cam.cam_mode[ret].pixfmt) {
+ struct hlp_dev *hlp_dev;
+
+ hlp_dev = hlp;
+ if (hlp_dev == 0
+ || (hlp_dev->gspca_dev != 0
+ && hlp_dev->gspca_dev != gspca_dev)) { /* helper busy */
+ fmt->fmt.pix.pixelformat =
+ gspca_dev->pixfmt =
+ gspca_dev->cam.cam_mode[ret].pixfmt;
+ } else { /* helper active */
+ hlp_dev->gspca_dev = gspca_dev;
+ hlp_dev->pixfmt = gspca_dev->cam.cam_mode[ret].pixfmt;
+ hlp_dev->fr_d = gspca_dev->fr_i;
+ }
+ } else if (hlp != 0 && hlp->gspca_dev == gspca_dev)
+ hlp->gspca_dev = 0;
+#endif /*GSPCA_HLP*/
+ ret = 0;
out:
mutex_unlock(&gspca_dev->queue_lock);
return ret;
@@ -838,7 +1267,7 @@ static int dev_open(struct inode *inode, struct file *file)
struct gspca_dev *gspca_dev;
int ret;
- PDEBUG(D_STREAM, "opening");
+ PDEBUG(D_STREAM, "%s open", current->comm);
gspca_dev = (struct gspca_dev *) video_devdata(file);
if (mutex_lock_interruptible(&gspca_dev->queue_lock))
return -ERESTARTSYS;
@@ -867,7 +1296,7 @@ static int dev_open(struct inode *inode, struct file *file)
file->private_data = gspca_dev;
#ifdef GSPCA_DEBUG
/* activate the v4l2 debug */
- if (gspca_debug & D_CONF)
+ if (gspca_debug & D_V4L2)
gspca_dev->vdev.debug |= 3;
else
gspca_dev->vdev.debug &= ~3;
@@ -877,7 +1306,7 @@ out:
if (ret != 0)
PDEBUG(D_ERR|D_STREAM, "open failed err %d", ret);
else
- PDEBUG(D_STREAM, "open OK");
+ PDEBUG(D_STREAM, "open done");
return ret;
}
@@ -885,7 +1314,7 @@ static int dev_close(struct inode *inode, struct file *file)
{
struct gspca_dev *gspca_dev = file->private_data;
- PDEBUG(D_STREAM, "closing");
+ PDEBUG(D_STREAM, "%s close", current->comm);
if (mutex_lock_interruptible(&gspca_dev->queue_lock))
return -ERESTARTSYS;
gspca_dev->users--;
@@ -898,11 +1327,28 @@ static int dev_close(struct inode *inode, struct file *file)
gspca_dev->sd_desc->close(gspca_dev);
mutex_unlock(&gspca_dev->usb_lock);
frame_free(gspca_dev);
- file->private_data = NULL;
gspca_dev->capt_file = 0;
+ gspca_dev->memory = GSPCA_MEMORY_NO;
+#ifdef GSPCA_HLP
+ {
+ struct hlp_dev *hlp_dev;
+ int mode;
+
+ hlp_dev = hlp;
+ if (hlp_dev != 0
+ && hlp_dev->gspca_dev == gspca_dev) {
+ hlp_dev->gspca_dev = 0;
+ hlp_dev->frame = 0;
+ mode = gspca_dev->curr_mode;
+ gspca_dev->pixfmt =
+ gspca_dev->cam.cam_mode[mode].pixfmt;
+ }
+ }
+#endif /*GSPCA_HLP*/
}
+ file->private_data = NULL;
mutex_unlock(&gspca_dev->queue_lock);
- PDEBUG(D_STREAM, "closed");
+ PDEBUG(D_STREAM, "close done");
return 0;
}
@@ -1036,32 +1482,50 @@ static int vidioc_reqbufs(struct file *file, void *priv,
struct v4l2_requestbuffers *rb)
{
struct gspca_dev *gspca_dev = priv;
- int frsz, ret;
+ int i, ret = 0;
PDEBUG(D_STREAM, "reqbufs %d", rb->count);
if (rb->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
- if (rb->memory != V4L2_MEMORY_MMAP
- && rb->memory != V4L2_MEMORY_USERPTR)
+ switch (rb->memory) {
+ case V4L2_MEMORY_MMAP:
+ break;
+ case V4L2_MEMORY_USERPTR:
+#ifdef GSPCA_HLP
+ if (hlp == 0 || hlp->gspca_dev != gspca_dev)
+ break;
+#endif
return -EINVAL;
- if (rb->count == 0)
+ default:
return -EINVAL;
- frsz = gspca_get_buff_size(gspca_dev);
- if (frsz < 0)
- return frsz;
+ }
if (mutex_lock_interruptible(&gspca_dev->queue_lock))
return -ERESTARTSYS;
- if (gspca_dev->capt_file != 0) { /* only one file may do capture */
+
+ for (i = 0; i < gspca_dev->nframes; i++) {
+ if (gspca_dev->frame[i].vma_use_count) {
+ ret = -EBUSY;
+ goto out;
+ }
+ }
+
+ /* only one file may do capture */
+ if ((gspca_dev->capt_file != 0 && gspca_dev->capt_file != file)
+ || gspca_dev->streaming) {
ret = -EBUSY;
goto out;
}
- ret = frame_alloc(gspca_dev,
- rb->count,
- (unsigned int) frsz,
- rb->memory);
- if (ret == 0) {
- rb->count = gspca_dev->nframes;
- gspca_dev->capt_file = file;
+
+ if (rb->count == 0) { /* unrequest? */
+ frame_free(gspca_dev);
+ gspca_dev->capt_file = 0;
+ } else {
+ gspca_dev->memory = rb->memory;
+ ret = frame_alloc(gspca_dev, rb->count);
+ if (ret == 0) {
+ rb->count = gspca_dev->nframes;
+ gspca_dev->capt_file = file;
+ }
}
out:
mutex_unlock(&gspca_dev->queue_lock);
@@ -1224,12 +1688,25 @@ static int vidiocgmbuf(struct file *file, void *priv,
if (gspca_dev->nframes == 0) {
struct v4l2_requestbuffers rb;
int ret;
-
+ __u32 pixfmt;
+ short width, height;
+
+ /* as the final format is not yet defined, allocate
+ buffers with the max size */
+ pixfmt = gspca_dev->pixfmt;
+ width = gspca_dev->width;
+ height = gspca_dev->height;
+ gspca_dev->pixfmt = V4L2_PIX_FMT_BGR32;
+ gspca_dev->width = 640;
+ gspca_dev->height = 480;
memset(&rb, 0, sizeof rb);
rb.count = 4;
rb.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
rb.memory = V4L2_MEMORY_MMAP;
ret = vidioc_reqbufs(file, priv, &rb);
+ gspca_dev->pixfmt = pixfmt;
+ gspca_dev->width = width;
+ gspca_dev->height = height;
if (ret != 0)
return ret;
}
@@ -1328,43 +1805,22 @@ out:
return ret;
}
-static unsigned int dev_poll(struct file *file, poll_table * wait)
-{
- struct gspca_dev *gspca_dev = file->private_data;
- int i, ret;
-
- PDEBUG(D_FRAM, "poll");
-
- poll_wait(file, &gspca_dev->wq, wait);
-
- if (mutex_lock_interruptible(&gspca_dev->queue_lock) != 0)
- return POLLERR;
- if (gspca_dev->dev == 0
- || !gspca_dev->streaming) /* if not streaming */
- ret = POLLERR;
- else {
- i = gspca_dev->fr_o;
- i = gspca_dev->fr_queue[i];
- if (gspca_dev->frame[i].v4l2_buf.flags & V4L2_BUF_FLAG_DONE)
- ret = POLLIN | POLLRDNORM; /* something to read */
- else
- ret = 0;
- }
- mutex_unlock(&gspca_dev->queue_lock);
- return ret;
-}
-
/*
* wait for a video frame
*
* If a frame is ready, its index is returned.
*/
-static int gspca_frame_wait(struct gspca_dev *gspca_dev,
+static int frame_wait(struct gspca_dev *gspca_dev,
int nonblock_ing)
{
struct gspca_frame *frame;
int i, j, ret;
+ /* if userptr, treat the awaiting URBs */
+ if (gspca_dev->memory == V4L2_MEMORY_USERPTR)
+ isoc_transfer(gspca_dev);
+
+ /* check if a frame is ready */
i = gspca_dev->fr_o;
j = gspca_dev->fr_queue[i];
frame = &gspca_dev->frame[j];
@@ -1385,13 +1841,14 @@ static int gspca_frame_wait(struct gspca_dev *gspca_dev,
}
if (!gspca_dev->streaming || !gspca_dev->present)
return -EIO;
+ if (gspca_dev->memory == V4L2_MEMORY_USERPTR)
+ isoc_transfer(gspca_dev);
i = gspca_dev->fr_o;
j = gspca_dev->fr_queue[i];
frame = &gspca_dev->frame[j];
if (frame->v4l2_buf.flags & V4L2_BUF_FLAG_DONE)
break;
}
-
ok:
atomic_dec(&gspca_dev->nevent);
gspca_dev->fr_o = (i + 1) % gspca_dev->nframes;
@@ -1434,7 +1891,7 @@ static int vidioc_dqbuf(struct file *file, void *priv,
if (mutex_lock_interruptible(&gspca_dev->read_lock))
return -ERESTARTSYS;
- ret = gspca_frame_wait(gspca_dev, file->f_flags & O_NONBLOCK);
+ ret = frame_wait(gspca_dev, file->f_flags & O_NONBLOCK);
if (ret < 0)
goto out;
i = ret; /* frame index */
@@ -1467,14 +1924,14 @@ static int vidioc_qbuf(struct file *file, void *priv,
index = v4l2_buf->index;
if ((unsigned) index >= gspca_dev->nframes) {
- PDEBUG(D_STREAM,
+ PDEBUG(D_FRAM,
"qbuf idx %d >= %d", index, gspca_dev->nframes);
return -EINVAL;
}
frame = &gspca_dev->frame[index];
if (v4l2_buf->memory != frame->v4l2_buf.memory) {
- PDEBUG(D_STREAM, "qbuf bad memory type");
+ PDEBUG(D_FRAM, "qbuf bad memory type");
return -EINVAL;
}
if (gspca_dev->capt_file != file)
@@ -1483,17 +1940,16 @@ static int vidioc_qbuf(struct file *file, void *priv,
if (mutex_lock_interruptible(&gspca_dev->queue_lock))
return -ERESTARTSYS;
- if (frame->v4l2_buf.flags
- & (V4L2_BUF_FLAG_QUEUED | V4L2_BUF_FLAG_DONE)) {
- PDEBUG(D_STREAM, "qbuf bad state");
+ if (frame->v4l2_buf.flags & BUF_ALL_FLAGS) {
+ PDEBUG(D_FRAM, "qbuf bad state");
ret = -EINVAL;
goto out;
}
frame->v4l2_buf.flags |= V4L2_BUF_FLAG_QUEUED;
- frame->v4l2_buf.flags &= ~V4L2_BUF_FLAG_DONE;
+/* frame->v4l2_buf.flags &= ~V4L2_BUF_FLAG_DONE; */
- if (v4l2_buf->memory == V4L2_MEMORY_USERPTR) {
+ if (frame->v4l2_buf.memory == V4L2_MEMORY_USERPTR) {
frame->data = frame->data_end =
(unsigned char *) v4l2_buf->m.userptr;
frame->v4l2_buf.m.userptr = v4l2_buf->m.userptr;
@@ -1517,16 +1973,16 @@ out:
return ret;
}
-static ssize_t dev_read(struct file *file, char __user *data,
- size_t count, loff_t *ppos)
+/*
+ * allocate the resources for read()
+ */
+static int read_alloc(struct gspca_dev *gspca_dev,
+ struct file *file)
{
- struct gspca_dev *gspca_dev = file->private_data;
- struct gspca_frame *frame;
struct v4l2_buffer v4l2_buf;
- struct timeval timestamp;
- int i, ret, ret2;
+ int i, ret;
- PDEBUG(D_FRAM, "read (%p, %d)", data, count);
+ PDEBUG(D_STREAM, "read alloc");
if (gspca_dev->nframes == 0) {
struct v4l2_requestbuffers rb;
@@ -1536,7 +1992,7 @@ static ssize_t dev_read(struct file *file, char __user *data,
rb.memory = V4L2_MEMORY_MMAP;
ret = vidioc_reqbufs(file, gspca_dev, &rb);
if (ret != 0) {
- PDEBUG(D_STREAM, "read reqbuf err: %d", ret);
+ PDEBUG(D_STREAM, "read reqbuf err %d", ret);
return ret;
}
memset(&v4l2_buf, 0, sizeof v4l2_buf);
@@ -1553,18 +2009,89 @@ static ssize_t dev_read(struct file *file, char __user *data,
return ret;
}
}
- } else if (gspca_dev->capt_file != file)
- return -EINVAL;
+ gspca_dev->memory = GSPCA_MEMORY_READ;
+ }
+ /* start streaming */
+ ret = vidioc_streamon(file, gspca_dev, V4L2_BUF_TYPE_VIDEO_CAPTURE);
+ if (ret != 0)
+ PDEBUG(D_STREAM, "read streamon err %d", ret);
+ return ret;
+}
+
+static unsigned int dev_poll(struct file *file, poll_table *wait)
+{
+ struct gspca_dev *gspca_dev = file->private_data;
+ int i, ret;
+
+ PDEBUG(D_FRAM, "poll");
+
+ poll_wait(file, &gspca_dev->wq, wait);
+ if (!gspca_dev->present)
+ return POLLERR;
+
+ /* if not streaming, the user would use read() */
if (!gspca_dev->streaming) {
- ret = vidioc_streamon(file, gspca_dev,
- V4L2_BUF_TYPE_VIDEO_CAPTURE);
+ if (gspca_dev->memory != GSPCA_MEMORY_NO) {
+ ret = POLLERR; /* not the 1st time */
+ goto out;
+ }
+ ret = read_alloc(gspca_dev, file);
if (ret != 0) {
- PDEBUG(D_STREAM, "read streamon err %d", ret);
- return ret;
+ ret = POLLERR;
+ goto out;
}
}
+ if (mutex_lock_interruptible(&gspca_dev->queue_lock) != 0)
+ return POLLERR;
+ if (!gspca_dev->present) {
+ ret = POLLERR;
+ goto out;
+ }
+
+ /* if not mmap, treat the awaiting URBs */
+ if (gspca_dev->memory == V4L2_MEMORY_USERPTR
+ && gspca_dev->capt_file == file)
+ isoc_transfer(gspca_dev);
+
+ i = gspca_dev->fr_o;
+ i = gspca_dev->fr_queue[i];
+ if (gspca_dev->frame[i].v4l2_buf.flags & V4L2_BUF_FLAG_DONE)
+ ret = POLLIN | POLLRDNORM; /* something to read */
+ else
+ ret = 0;
+out:
+ mutex_unlock(&gspca_dev->queue_lock);
+ return ret;
+}
+
+static ssize_t dev_read(struct file *file, char __user *data,
+ size_t count, loff_t *ppos)
+{
+ struct gspca_dev *gspca_dev = file->private_data;
+ struct gspca_frame *frame;
+ struct v4l2_buffer v4l2_buf;
+ struct timeval timestamp;
+ int i, ret, ret2;
+
+ PDEBUG(D_FRAM, "read (%d)", count);
+ if (!gspca_dev->present)
+ return -ENODEV;
+ switch (gspca_dev->memory) {
+ case GSPCA_MEMORY_NO: /* first time */
+ ret = read_alloc(gspca_dev, file);
+ if (ret != 0)
+ return ret;
+ break;
+ case GSPCA_MEMORY_READ:
+ if (gspca_dev->capt_file != file)
+ return -EINVAL;
+ break;
+ default:
+ return -EINVAL;
+ }
+
/* get a frame */
jiffies_to_timeval(get_jiffies_64(), &timestamp);
timestamp.tv_sec--;
@@ -1615,7 +2142,7 @@ out:
return ret;
}
-static void gspca_dev_release(struct video_device *vfd)
+static void dev_release(struct video_device *vfd)
{
/* nothing */
}
@@ -1635,7 +2162,7 @@ static struct video_device gspca_template = {
.name = "gspca main driver",
.type = VID_TYPE_CAPTURE,
.fops = &dev_fops,
- .release = gspca_dev_release, /* mandatory */
+ .release = dev_release, /* mandatory */
.minor = -1,
.vidioc_querycap = vidioc_querycap,
.vidioc_dqbuf = vidioc_dqbuf,
@@ -1673,7 +2200,8 @@ static struct video_device gspca_template = {
int gspca_dev_probe(struct usb_interface *intf,
const struct usb_device_id *id,
const struct sd_desc *sd_desc,
- int dev_size)
+ int dev_size,
+ struct module *module)
{
struct usb_interface_descriptor *interface;
struct gspca_dev *gspca_dev;
@@ -1682,8 +2210,8 @@ int gspca_dev_probe(struct usb_interface *intf,
__u16 vendor;
__u16 product;
- vendor = le16_to_cpu(dev->descriptor.idVendor);
- product = le16_to_cpu(dev->descriptor.idProduct);
+ vendor = id->idVendor;
+ product = id->idProduct;
PDEBUG(D_PROBE, "probing %04x:%04x", vendor, product);
/* we don't handle multi-config cameras */
@@ -1703,6 +2231,7 @@ int gspca_dev_probe(struct usb_interface *intf,
}
gspca_dev->dev = dev;
gspca_dev->iface = interface->bInterfaceNumber;
+ gspca_dev->nbalt = intf->num_altsetting;
gspca_dev->sd_desc = sd_desc;
/* gspca_dev->users = 0; (done by kzalloc) */
gspca_dev->nbufread = 2;
@@ -1724,6 +2253,9 @@ int gspca_dev_probe(struct usb_interface *intf,
/* init video stuff */
memcpy(&gspca_dev->vdev, &gspca_template, sizeof gspca_template);
gspca_dev->vdev.dev = &dev->dev;
+ memcpy(&gspca_dev->fops, &dev_fops, sizeof gspca_dev->fops);
+ gspca_dev->vdev.fops = &gspca_dev->fops;
+ gspca_dev->fops.owner = module; /* module protection */
ret = video_register_device(&gspca_dev->vdev,
VFL_TYPE_GRABBER,
video_nr);
@@ -1758,7 +2290,7 @@ void gspca_disconnect(struct usb_interface *intf)
mutex_lock(&gspca_dev->queue_lock);
mutex_lock(&gspca_dev->usb_lock);
gspca_dev->streaming = 0;
- gspca_kill_transfer(gspca_dev);
+ destroy_urbs(gspca_dev);
mutex_unlock(&gspca_dev->usb_lock);
mutex_unlock(&gspca_dev->queue_lock);
while (gspca_dev->users != 0) { /* wait until fully closed */
@@ -1777,11 +2309,23 @@ EXPORT_SYMBOL(gspca_disconnect);
/* -- module insert / remove -- */
static int __init gspca_init(void)
{
+#ifdef GSPCA_HLP
+ int ret;
+
+ /* create /dev/gspca_hlp */
+ ret = misc_register(&hlp_device);
+ if (ret < 0)
+ err("misc_register err %d", ret);
+ start_hlp(); /* try to start the helper process */
+#endif
info("main v%s registered", version);
return 0;
}
static void __exit gspca_exit(void)
{
+#ifdef GSPCA_HLP
+ misc_deregister(&hlp_device);
+#endif
info("main deregistered");
}
@@ -1791,7 +2335,8 @@ module_exit(gspca_exit);
module_param_named(debug, gspca_debug, int, 0644);
MODULE_PARM_DESC(debug,
"Debug (bit) 0x01:error 0x02:probe 0x04:config"
- " 0x08:stream 0x10:frame 0x20:packet 0x40:USBin 0x80:USBout");
+ " 0x08:stream 0x10:frame 0x20:packet 0x40:USBin 0x80:USBout"
+ " 0x0100: v4l2");
module_param(comp_fac, int, 0644);
MODULE_PARM_DESC(comp_fac,
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-21 11:53:46 +0000