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--- sys/v4l/v4lsrc_calls.c.orig 2008-03-03 17:29:52.000000000 -0500
+++ sys/v4l/v4lsrc_calls.c 2008-03-20 23:50:39.000000000 -0400
@@ -26,12 +26,14 @@
#include <stdlib.h>
#include <sys/types.h>
+#include <sys/uio.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <string.h>
#include <errno.h>
+#include <unistd.h>
#include "v4lsrc_calls.h"
#include <sys/time.h>
@@ -87,6 +89,51 @@
return FALSE;
}
+ if (GST_V4LELEMENT (v4lsrc)->use_read) {
+ struct video_picture vp;
+ struct video_window vw;
+
+
+ if (ioctl (GST_V4LELEMENT (v4lsrc)->video_fd, VIDIOCGPICT, &vp) == -1) {
+ GST_ELEMENT_ERROR (v4lsrc, RESOURCE, WRITE, (NULL),
+ ("Error getting current picture info for frame (%d): %s", num, g_strerror (errno)));
+ return FALSE;
+ }
+
+ vp.palette = v4lsrc->mmap.format;
+ if (ioctl (GST_V4LELEMENT (v4lsrc)->video_fd, VIDIOCSPICT, &vp) == -1) {
+ GST_ELEMENT_ERROR (v4lsrc, RESOURCE, WRITE, (NULL),
+ ("Error setting picture info for frame (%d): %s", num, g_strerror (errno)));
+ return FALSE;
+ }
+
+ if (ioctl (GST_V4LELEMENT (v4lsrc)->video_fd, VIDIOCGWIN, &vw) == -1) {
+ GST_ELEMENT_ERROR (v4lsrc, RESOURCE, WRITE, (NULL),
+ ("Error getting current window properties for frame (%d): %s", num, g_strerror (errno)));
+ return FALSE;
+ }
+
+ vw.width = v4lsrc->mmap.width;
+ vw.height = v4lsrc->mmap.height;
+ if (ioctl (GST_V4LELEMENT (v4lsrc)->video_fd, VIDIOCSWIN, &vw) == -1) {
+ vw.flags &= (0x3F00 - 1);
+ vw.flags |= 15 << 16;
+ if (ioctl (GST_V4LELEMENT (v4lsrc)->video_fd, VIDIOCSWIN, &vw) == -1) {
+ GST_ELEMENT_ERROR (v4lsrc, RESOURCE, WRITE, (NULL),
+ ("Error setting window properties for frame (%d): %s", num, g_strerror (errno)));
+ return FALSE;
+ }
+ }
+
+
+ if (read(GST_V4LELEMENT (v4lsrc)->video_fd, GST_V4LELEMENT (v4lsrc)->buffer + (1024 * 768 * 3 * num), v4lsrc->mmap.width * v4lsrc->mmap.height * 3/2) < 0) {
+ GST_ELEMENT_ERROR (v4lsrc, RESOURCE, WRITE, (NULL),
+ ("Error queueing a buffer (%d): %s", num, g_strerror (errno)));
+ return FALSE;
+ }
+ goto done;
+ }
+
/* instruct the driver to prepare capture using buffer frame num */
v4lsrc->mmap.frame = num;
if (ioctl (GST_V4LELEMENT (v4lsrc)->video_fd,
@@ -95,6 +142,7 @@
("Error queueing a buffer (%d): %s", num, g_strerror (errno)));
return FALSE;
}
+done:
v4lsrc->frame_queue_state[num] = QUEUE_STATE_QUEUED;
v4lsrc->num_queued++;
@@ -117,6 +165,10 @@
return FALSE;
}
+ if (GST_V4LELEMENT (v4lsrc)->use_read) {
+ goto done;
+ }
+
while (ioctl (GST_V4LELEMENT (v4lsrc)->video_fd, VIDIOCSYNC, &num) < 0) {
/* if the sync() got interrupted, we can retry */
if (errno != EINTR) {
@@ -126,6 +178,7 @@
}
GST_DEBUG_OBJECT (v4lsrc, "Sync got interrupted");
}
+done:
GST_LOG_OBJECT (v4lsrc, "VIOIOCSYNC on frame %d done", num);
v4lsrc->frame_queue_state[num] = QUEUE_STATE_SYNCED;
@@ -168,13 +221,28 @@
GST_V4L_CHECK_OPEN (GST_V4LELEMENT (v4lsrc));
GST_V4L_CHECK_NOT_ACTIVE (GST_V4LELEMENT (v4lsrc));
+ GST_V4LELEMENT (v4lsrc)->use_read = FALSE;
+
/* request the mmap buffer info:
* total size of mmap buffer, number of frames, offsets of frames */
if (ioctl (GST_V4LELEMENT (v4lsrc)->video_fd, VIDIOCGMBUF,
&(v4lsrc->mbuf)) < 0) {
- GST_ELEMENT_ERROR (v4lsrc, RESOURCE, READ, (NULL),
- ("Error getting buffer information: %s", g_strerror (errno)));
- return FALSE;
+ int i;
+
+ GST_V4LELEMENT (v4lsrc)->buffer = (guint8 *) g_malloc0 (sizeof (guint8) * 1024 * 768 * 3 * MIN_BUFFERS_QUEUED);
+ GST_V4LELEMENT (v4lsrc)->use_read = TRUE;
+
+ v4lsrc->frame_queue_state = (gint8 *) g_malloc (sizeof (gint8) * MIN_BUFFERS_QUEUED);
+
+ v4lsrc->mbuf.frames = MIN_BUFFERS_QUEUED;
+ for (i = 0; i < MIN_BUFFERS_QUEUED; i++) {
+ v4lsrc->mbuf.offsets[i] = (1024 * 768 * 3 * i);
+ }
+
+ /* lock for the frame_state */
+ v4lsrc->mutex_queue_state = g_mutex_new ();
+ v4lsrc->cond_queue_state = g_cond_new ();
+ goto done;
}
if (v4lsrc->mbuf.frames < MIN_BUFFERS_QUEUED) {
@@ -205,6 +273,7 @@
GST_V4LELEMENT (v4lsrc)->buffer = NULL;
return FALSE;
}
+done:
return TRUE;
}
@@ -413,10 +482,14 @@
v4lsrc->frame_queue_state = NULL;
/* unmap the buffer */
- if (munmap (GST_V4LELEMENT (v4lsrc)->buffer, v4lsrc->mbuf.size) == -1) {
- GST_ELEMENT_ERROR (v4lsrc, RESOURCE, CLOSE, (NULL),
- ("error munmap'ing capture buffer: %s", g_strerror (errno)));
- return FALSE;
+ if (GST_V4LELEMENT (v4lsrc)->use_read) {
+ g_free (GST_V4LELEMENT (v4lsrc)->buffer);
+ } else {
+ if (munmap (GST_V4LELEMENT (v4lsrc)->buffer, v4lsrc->mbuf.size) == -1) {
+ GST_ELEMENT_ERROR (v4lsrc, RESOURCE, CLOSE, (NULL),
+ ("error munmap'ing capture buffer: %s", g_strerror (errno)));
+ return FALSE;
+ }
}
GST_V4LELEMENT (v4lsrc)->buffer = NULL;
@@ -446,6 +519,7 @@
/* so, we need a buffer and some more stuff */
int frame = 0;
guint8 *buffer;
+ gboolean use_read = FALSE;
struct video_mbuf vmbuf;
struct video_mmap vmmap;
@@ -456,24 +530,72 @@
/* let's start by requesting a buffer and mmap()'ing it */
if (ioctl (GST_V4LELEMENT (v4lsrc)->video_fd, VIDIOCGMBUF, &vmbuf) < 0) {
- GST_ELEMENT_ERROR (v4lsrc, RESOURCE, READ, (NULL),
- ("Error getting buffer information: %s", g_strerror (errno)));
- return FALSE;
- }
- /* Map the buffers */
- buffer = mmap (NULL, vmbuf.size, PROT_READ | PROT_WRITE,
- MAP_SHARED, GST_V4LELEMENT (v4lsrc)->video_fd, 0);
- if (buffer == MAP_FAILED) {
- GST_ELEMENT_ERROR (v4lsrc, RESOURCE, OPEN_READ_WRITE, (NULL),
- ("Error mapping our try-out buffer: %s", g_strerror (errno)));
- return FALSE;
- }
+ buffer = (gint8 *) g_malloc0 (sizeof (gint8) * 1024 * 768 * 3);
+ use_read = TRUE;
+ } else {
+ /* Map the buffers */
+ buffer = mmap (0, vmbuf.size, PROT_READ | PROT_WRITE,
+ MAP_SHARED, GST_V4LELEMENT (v4lsrc)->video_fd, 0);
+ if (buffer == MAP_FAILED) {
+ GST_ELEMENT_ERROR (v4lsrc, RESOURCE, OPEN_READ_WRITE, (NULL),
+ ("Error mapping our try-out buffer: %s", g_strerror (errno)));
+ return FALSE;
+ }
+ }
/* now that we have a buffer, let's try out our format */
vmmap.width = width;
vmmap.height = height;
vmmap.format = palette;
vmmap.frame = frame;
+ if (use_read) {
+ struct video_picture vp;
+ struct video_window vw;
+
+ if (ioctl (GST_V4LELEMENT (v4lsrc)->video_fd, VIDIOCGWIN, &vw) == -1) {
+ GST_ERROR_OBJECT (v4lsrc,
+ "Error getting current window properties: %s", g_strerror (errno));
+ g_free (buffer);
+ return FALSE;
+ }
+
+ vw.width = width;
+ vw.height = height;
+ if (ioctl (GST_V4LELEMENT (v4lsrc)->video_fd, VIDIOCSWIN, &vw) == -1) {
+ vw.flags &= (0x3F00 - 1);
+ vw.flags |= 15 << 16;
+ if (ioctl (GST_V4LELEMENT (v4lsrc)->video_fd, VIDIOCSWIN, &vw) == -1) {
+ GST_ERROR_OBJECT (v4lsrc,
+ "Error setting window properties: %s", g_strerror (errno));
+ g_free (buffer);
+ return FALSE;
+ }
+ }
+
+ if (ioctl (GST_V4LELEMENT (v4lsrc)->video_fd, VIDIOCGPICT, &vp) == -1) {
+ GST_ERROR_OBJECT (v4lsrc,
+ "Error getting current picture info: %s", g_strerror (errno));
+ g_free (buffer);
+ return FALSE;
+ }
+
+ vp.palette = palette;
+ if (ioctl (GST_V4LELEMENT (v4lsrc)->video_fd, VIDIOCSPICT, &vp) == -1) {
+ GST_ERROR_OBJECT (v4lsrc,
+ "Error setting picture info: %s", g_strerror (errno));
+ g_free (buffer);
+ return FALSE;
+ }
+
+
+ if (read (GST_V4LELEMENT (v4lsrc)->video_fd, buffer, width * height * 3/2) < 0) {
+ GST_ERROR_OBJECT (v4lsrc,
+ "Error reading into our try-out buffer: %s", g_strerror (errno));
+ g_free (buffer);
+ return FALSE;
+ }
+ goto done;
+ }
if (ioctl (GST_V4LELEMENT (v4lsrc)->video_fd, VIDIOCMCAPTURE, &vmmap) < 0) {
if (errno != EINVAL) /* our format failed! */
GST_ERROR_OBJECT (v4lsrc,
@@ -488,7 +610,11 @@
return FALSE;
}
- munmap (buffer, vmbuf.size);
+done:
+ if (use_read)
+ g_free (buffer);
+ else
+ munmap (buffer, vmbuf.size);
/* if we got here, it worked! woohoo, the format is supported! */
return TRUE;
|
