[asterisk-commits] rizzo: trunk r95313 - /trunk/channels/
SVN commits to the Asterisk project
asterisk-commits at lists.digium.com
Fri Dec 28 20:02:04 CST 2007
Author: rizzo
Date: Fri Dec 28 20:02:03 2007
New Revision: 95313
URL: http://svn.digium.com/view/asterisk?view=rev&rev=95313
Log:
Move grabbers definitions to a separate file, vgrabbers.c, so it is easier
to add more entries. This required moving struct grab_desc to the common
header, and adding an entry in the Makefile.
On passing, cleanup some comments and file headers (some are still missing).
Added:
trunk/channels/vgrabbers.c (with props)
Modified:
trunk/channels/Makefile
trunk/channels/console_video.c
trunk/channels/console_video.h
trunk/channels/vcodecs.c
Modified: trunk/channels/Makefile
URL: http://svn.digium.com/view/asterisk/trunk/channels/Makefile?view=diff&rev=95313&r1=95312&r2=95313
==============================================================================
--- trunk/channels/Makefile (original)
+++ trunk/channels/Makefile Fri Dec 28 20:02:03 2007
@@ -51,7 +51,7 @@
all: _all
-chan_oss.so: console_video.o
+chan_oss.so: console_video.o vgrabbers.o
include $(ASTTOPDIR)/Makefile.moddir_rules
Modified: trunk/channels/console_video.c
URL: http://svn.digium.com/view/asterisk/trunk/channels/console_video.c?view=diff&rev=95313&r1=95312&r2=95313
==============================================================================
--- trunk/channels/console_video.c (original)
+++ trunk/channels/console_video.c Fri Dec 28 20:02:03 2007
@@ -1,3 +1,19 @@
+/*
+ * Asterisk -- An open source telephony toolkit.
+ *
+ * Copyright 2007, Marta Carbone, Sergio Fadda, Luigi Rizzo
+ *
+ * See http://www.asterisk.org for more information about
+ * the Asterisk project. Please do not directly contact
+ * any of the maintainers of this project for assistance;
+ * the project provides a web site, mailing lists and IRC
+ * channels for your use.
+ *
+ * This program is free software, distributed under the terms of
+ * the GNU General Public License Version 2. See the LICENSE file
+ * at the top of the source tree.
+ */
+
/*
* Experimental support for video sessions. We use SDL for rendering, ffmpeg
* as the codec library for encoding and decoding, and Video4Linux and X11
@@ -131,7 +147,6 @@
static void my_scale(struct fbuf_t *in, AVPicture *p_in,
struct fbuf_t *out, AVPicture *p_out);
-struct grab_desc; /* grabber description */
struct video_codec_desc; /* forward declaration */
/*
* Descriptor of the local source, made of the following pieces:
@@ -208,7 +223,7 @@
static AVPicture *fill_pict(struct fbuf_t *b, AVPicture *p);
-static void fbuf_free(struct fbuf_t *b)
+void fbuf_free(struct fbuf_t *b)
{
struct fbuf_t x = *b;
@@ -224,292 +239,14 @@
#include "vcodecs.c"
#include "console_gui.c"
-/*------ end codec specific code -----*/
-
-/* descriptor for a grabber */
-struct grab_desc {
- const char *name;
- void *(*open)(const char *name, struct fbuf_t *geom, int fps);
- struct fbuf_t *(*read)(void *d);
- void (*move)(void *d, int dx, int dy);
- void *(*close)(void *d);
-};
-
-
-#ifdef HAVE_X11
-struct grab_x11_desc {
- Display *dpy; /* x11 grabber info */
- XImage *image;
- int screen_width; /* width of X screen */
- int screen_height; /* height of X screen */
- struct fbuf_t b;
-};
-
-static void *grab_x11_open(const char *name, struct fbuf_t *geom, int fps)
-{
- XImage *im;
- int screen_num;
- struct grab_x11_desc *v;
- struct fbuf_t *b;
-
- if (strcasecmp(name, "X11"))
- return NULL; /* not us */
- v = ast_calloc(1, sizeof(*v));
- if (v == NULL)
- return NULL; /* no memory */
-
- /* init the connection with the X server */
- v->dpy = XOpenDisplay(NULL);
- if (v->dpy == NULL) {
- ast_log(LOG_WARNING, "error opening display\n");
- goto error;
- }
-
- v->b = *geom; /* copy geometry */
- b = &v->b; /* shorthand */
- /* find width and height of the screen */
- screen_num = DefaultScreen(v->dpy);
- v->screen_width = DisplayWidth(v->dpy, screen_num);
- v->screen_height = DisplayHeight(v->dpy, screen_num);
-
- v->image = im = XGetImage(v->dpy,
- RootWindow(v->dpy, DefaultScreen(v->dpy)),
- b->x, b->y, b->w, b->h, AllPlanes, ZPixmap);
- if (v->image == NULL) {
- ast_log(LOG_WARNING, "error creating Ximage\n");
- goto error;
- }
- switch (im->bits_per_pixel) {
- case 32:
- b->pix_fmt = PIX_FMT_RGBA32;
- break;
- case 16:
- b->pix_fmt = (im->green_mask == 0x7e0) ? PIX_FMT_RGB565 : PIX_FMT_RGB555;
- break;
- }
-
- ast_log(LOG_NOTICE, "image: data %p %d bpp fmt %d, mask 0x%lx 0x%lx 0x%lx\n",
- im->data,
- im->bits_per_pixel,
- b->pix_fmt,
- im->red_mask, im->green_mask, im->blue_mask);
-
- /* set the pointer but not the size as this is not malloc'ed */
- b->data = (uint8_t *)im->data;
- return v;
-
-error:
- /* XXX maybe XDestroy (v->image) ? */
- if (v->dpy)
- XCloseDisplay(v->dpy);
- v->dpy = NULL;
- ast_free(v);
- return NULL;
-}
-
-static struct fbuf_t *grab_x11_read(void *desc)
-{
- /* read frame from X11 */
- struct grab_x11_desc *v = desc;
- struct fbuf_t *b = &v->b;
-
- XGetSubImage(v->dpy,
- RootWindow(v->dpy, DefaultScreen(v->dpy)),
- b->x, b->y, b->w, b->h, AllPlanes, ZPixmap, v->image, 0, 0);
-
- b->data = (uint8_t *)v->image->data;
- return b;
-}
-
-static int boundary_checks(int x, int limit)
-{
- return (x <= 0) ? 0 : (x > limit ? limit : x);
-}
-
-/* move the origin for the grabbed area */
-static void grab_x11_move(void *desc, int dx, int dy)
-{
- struct grab_x11_desc *v = desc;
-
- v->b.x = boundary_checks(v->b.x + dx, v->screen_width - v->b.w);
- v->b.y = boundary_checks(v->b.y + dy, v->screen_height - v->b.h);
-}
-
-static void *grab_x11_close(void *desc)
-{
- struct grab_x11_desc *v = desc;
-
- XCloseDisplay(v->dpy);
- v->dpy = NULL;
- v->image = NULL;
- ast_free(v);
- return NULL;
-}
-
-static struct grab_desc grab_x11_desc = {
- .name = "X11",
- .open = grab_x11_open,
- .read = grab_x11_read,
- .move = grab_x11_move,
- .close = grab_x11_close,
-};
-
-#endif /* HAVE_X11 */
-
-/* Video4Linux stuff is only used in grabber_open() */
-#ifdef HAVE_VIDEODEV_H
-#include <linux/videodev.h>
-
-struct grab_v4l1_desc {
- int fd;
- int fps;
- struct fbuf_t b;
-};
-
-/*!
- * Open the local video source and allocate a buffer
- * for storing the image. Return 0 on success, -1 on error
- */
-static void *grab_v4l1_open(const char *dev, struct fbuf_t *geom, int fps)
-{
- struct video_window vw = { 0 }; /* camera attributes */
- struct video_picture vp;
- int fd, i;
- struct grab_v4l1_desc *v;
- struct fbuf_t *b;
-
- fd = open(dev, O_RDONLY | O_NONBLOCK);
- if (fd < 0) {
- ast_log(LOG_WARNING, "error opening camera %s\n", dev);
- return NULL;
- }
-
- v = ast_calloc(1, sizeof(*v));
- if (v == NULL) {
- ast_log(LOG_WARNING, "no memory for camera %s\n", dev);
- close(fd);
- return NULL; /* no memory */
- }
- v->fd = fd;
- v->b = *geom;
- b = &v->b; /* shorthand */
-
- i = fcntl(fd, F_GETFL);
- if (-1 == fcntl(fd, F_SETFL, i | O_NONBLOCK)) {
- /* non fatal, just emit a warning */
- ast_log(LOG_WARNING, "error F_SETFL for %s [%s]\n",
- dev, strerror(errno));
- }
- /* set format for the camera.
- * In principle we could retry with a different format if the
- * one we are asking for is not supported.
- */
- vw.width = b->w;
- vw.height = b->h;
- vw.flags = fps << 16;
- if (ioctl(fd, VIDIOCSWIN, &vw) == -1) {
- ast_log(LOG_WARNING, "error setting format for %s [%s]\n",
- dev, strerror(errno));
- goto error;
- }
- if (ioctl(fd, VIDIOCGPICT, &vp) == -1) {
- ast_log(LOG_WARNING, "error reading picture info\n");
- goto error;
- }
- ast_log(LOG_WARNING,
- "contrast %d bright %d colour %d hue %d white %d palette %d\n",
- vp.contrast, vp.brightness,
- vp.colour, vp.hue,
- vp.whiteness, vp.palette);
- /* set the video format. Here again, we don't necessary have to
- * fail if the required format is not supported, but try to use
- * what the camera gives us.
- */
- b->pix_fmt = vp.palette;
- vp.palette = VIDEO_PALETTE_YUV420P;
- if (ioctl(v->fd, VIDIOCSPICT, &vp) == -1) {
- ast_log(LOG_WARNING, "error setting palette, using %d\n",
- b->pix_fmt);
- } else
- b->pix_fmt = vp.palette;
- /* allocate the source buffer.
- * XXX, the code here only handles yuv411, for other formats
- * we need to look at pix_fmt and set size accordingly
- */
- b->size = (b->w * b->h * 3)/2; /* yuv411 */
- ast_log(LOG_WARNING, "videodev %s opened, size %dx%d %d\n",
- dev, b->w, b->h, b->size);
- b->data = ast_calloc(1, b->size);
- if (!b->data) {
- ast_log(LOG_WARNING, "error allocating buffer %d bytes\n",
- b->size);
- goto error;
- }
- ast_log(LOG_WARNING, "success opening camera\n");
- return v;
-
-error:
- close(v->fd);
- fbuf_free(b);
- ast_free(v);
- return NULL;
-}
-
-static struct fbuf_t *grab_v4l1_read(void *desc)
-{
- struct grab_v4l1_desc *v = desc;
- struct fbuf_t *b = &v->b;
- for (;;) {
- int r, l = b->size - b->used;
- r = read(v->fd, b->data + b->used, l);
- // ast_log(LOG_WARNING, "read %d of %d bytes from webcam\n", r, l);
- if (r < 0) /* read error */
- break;
- if (r == 0) /* no data */
- break;
- b->used += r;
- if (r == l) {
- b->used = 0; /* prepare for next frame */
- return b;
- }
- }
- return NULL;
-}
-
-static void *grab_v4l1_close(void *desc)
-{
- struct grab_v4l1_desc *v = desc;
-
- close(v->fd);
- v->fd = -1;
- fbuf_free(&v->b);
- ast_free(v);
- return NULL;
-}
-
-static struct grab_desc grab_v4l1_desc = {
- .name = "v4l1",
- .open = grab_v4l1_open,
- .read = grab_v4l1_read,
- .close = grab_v4l1_close,
-};
-#endif /* HAVE_VIDEODEV_H */
-
-static struct grab_desc *my_grabbers[] = {
- &grab_x11_desc,
- &grab_v4l1_desc,
- NULL
-};
-
-/* try to open a video source, return 0 on success, 1 on error
- */
+/*! \brief Try to open a video source, return 0 on success, 1 on error */
static int grabber_open(struct video_out_desc *v)
{
struct grab_desc *g;
void *g_data;
int i;
- for (i = 0; (g = my_grabbers[i]); i++) {
+ for (i = 0; (g = console_grabbers[i]); i++) {
g_data = g->open(v->videodevice, &v->loc_src_geometry, v->fps);
if (g_data) {
v->grabber = g;
@@ -539,21 +276,15 @@
return v->grabber->read(v->grabber_data);
}
+/*! \brief handler run when dragging with the left button on
+ * the local source window - the effect is to move the offset
+ * of the captured area.
+ */
static void grabber_move(struct video_out_desc *v, int dx, int dy)
{
if (v->grabber && v->grabber->move)
v->grabber->move(v->grabber_data, dx, dy);
}
-
-/* Helper function to process incoming video.
- * For each incoming video call invoke ffmpeg_init() to intialize
- * the decoding structure then incoming video frames are processed
- * by write_video() which in turn calls pre_process_data(), to extract
- * the bitstream; accumulates data into a buffer within video_desc. When
- * a frame is complete (determined by the marker bit in the RTP header)
- * call decode_video() to decoding and if it successful call show_frame()
- * to display the frame.
- */
/*
* Map the codec name to the library. If not recognised, use a default.
@@ -607,8 +338,8 @@
/*
* Initialize the encoder for the local source:
- * - AVCodecContext, AVCodec, AVFrame are used by ffmpeg for encoding;
- * - encbuf is used to store the encoded frame (to be sent)
+ * - enc_ctx, codec, enc_in_frame are used by ffmpeg for encoding;
+ * - enc_out is used to store the encoded frame (to be sent)
* - mtu is used to determine the max size of video fragment
* NOTE: we enter here with the video source already open.
*/
@@ -922,7 +653,7 @@
if (v->enc_out.data == NULL) {
static volatile int a = 0;
if (a++ < 2)
- ast_log(LOG_WARNING, "fail, no encbuf\n");
+ ast_log(LOG_WARNING, "fail, no encoder output buffer\n");
return NULL;
}
v->enc->enc_run(v);
Modified: trunk/channels/console_video.h
URL: http://svn.digium.com/view/asterisk/trunk/channels/console_video.h?view=diff&rev=95313&r1=95312&r2=95313
==============================================================================
--- trunk/channels/console_video.h (original)
+++ trunk/channels/console_video.h Fri Dec 28 20:02:03 2007
@@ -28,10 +28,6 @@
"console {device}"
#else
-#ifdef HAVE_X11
-#include <X11/Xlib.h> /* this should be conditional */
-#endif
-
#include <ffmpeg/avcodec.h>
#ifndef OLD_FFMPEG
#include <ffmpeg/swscale.h> /* requires a recent ffmpeg */
@@ -66,6 +62,19 @@
int pix_fmt;
};
+void fbuf_free(struct fbuf_t *);
+
+/* descriptor for a grabber */
+struct grab_desc {
+ const char *name;
+ void *(*open)(const char *name, struct fbuf_t *geom, int fps);
+ struct fbuf_t *(*read)(void *d);
+ void (*move)(void *d, int dx, int dy);
+ void *(*close)(void *d);
+};
+
+extern struct grab_desc *console_grabbers[];
+
struct video_desc; /* opaque type for video support */
struct video_desc *get_video_desc(struct ast_channel *c);
Modified: trunk/channels/vcodecs.c
URL: http://svn.digium.com/view/asterisk/trunk/channels/vcodecs.c?view=diff&rev=95313&r1=95312&r2=95313
==============================================================================
--- trunk/channels/vcodecs.c (original)
+++ trunk/channels/vcodecs.c Fri Dec 28 20:02:03 2007
@@ -1,3 +1,19 @@
+/*
+ * Asterisk -- An open source telephony toolkit.
+ *
+ * Copyright 2007, Sergio Fadda, Luigi Rizzo
+ *
+ * See http://www.asterisk.org for more information about
+ * the Asterisk project. Please do not directly contact
+ * any of the maintainers of this project for assistance;
+ * the project provides a web site, mailing lists and IRC
+ * channels for your use.
+ *
+ * This program is free software, distributed under the terms of
+ * the GNU General Public License Version 2. See the LICENSE file
+ * at the top of the source tree.
+ */
+
/*
* Video codecs support for console_video.c
* $Revision$
Added: trunk/channels/vgrabbers.c
URL: http://svn.digium.com/view/asterisk/trunk/channels/vgrabbers.c?view=auto&rev=95313
==============================================================================
--- trunk/channels/vgrabbers.c (added)
+++ trunk/channels/vgrabbers.c Fri Dec 28 20:02:03 2007
@@ -1,0 +1,345 @@
+/*
+ * Asterisk -- An open source telephony toolkit.
+ *
+ * Copyright 2007, Luigi Rizzo
+ *
+ * See http://www.asterisk.org for more information about
+ * the Asterisk project. Please do not directly contact
+ * any of the maintainers of this project for assistance;
+ * the project provides a web site, mailing lists and IRC
+ * channels for your use.
+ *
+ * This program is free software, distributed under the terms of
+ * the GNU General Public License Version 2. See the LICENSE file
+ * at the top of the source tree.
+ */
+
+/*
+ * Video grabbers used in console_video.
+ *
+ * $Revision$
+ *
+ * Each grabber is implemented through open/read/close calls,
+ * plus an additional move() function used e.g. to change origin
+ * for the X grabber (this may be extended in the future to support
+ * more controls e.g. resolution changes etc.).
+ *
+ * open() should try to open and initialize the grabber, returning NULL on error.
+ * On success it allocates a descriptor for its private data (including
+ * a buffer for the video) and returns a pointer to the descriptor.
+ * read() will return NULL on failure, or a pointer to a buffer with data
+ * on success.
+ * close() should release resources.
+ * move() is optional.
+ * For more details look at the X11 grabber below.
+ *
+ * NOTE: at the moment we expect uncompressed video frames in YUV format,
+ * because this is what current sources supply and also is a convenient
+ * format for display. It is conceivable that one might want to support
+ * an already compressed stream, in which case we should redesign the
+ * pipeline used for the local source, which at the moment is
+ *
+ * .->--[loc_dpy]
+ * [src]-->--[enc_in]--+
+ * `->--[enc_out]
+ */
+
+#include "asterisk.h"
+#include <sys/ioctl.h>
+#include "asterisk/file.h"
+#include "asterisk/utils.h" /* ast_calloc */
+
+#include "console_video.h"
+
+#if defined(HAVE_VIDEO_CONSOLE)
+
+#ifdef HAVE_X11
+
+/* A simple X11 grabber, supporting only truecolor formats */
+
+#include <X11/Xlib.h>
+
+/*! \brief internal info used by the X11 grabber */
+struct grab_x11_desc {
+ Display *dpy;
+ XImage *image;
+ int screen_width; /* width of X screen */
+ int screen_height; /* height of X screen */
+ struct fbuf_t b; /* geometry and pointer into the XImage */
+};
+
+/*! \brief open the grabber.
+ * We use the special name 'X11' to indicate this grabber.
+ */
+static void *grab_x11_open(const char *name, struct fbuf_t *geom, int fps)
+{
+ XImage *im;
+ int screen_num;
+ struct grab_x11_desc *v;
+ struct fbuf_t *b;
+
+ if (strcasecmp(name, "X11"))
+ return NULL; /* not us */
+ v = ast_calloc(1, sizeof(*v));
+ if (v == NULL)
+ return NULL; /* no memory */
+
+ /* init the connection with the X server */
+ v->dpy = XOpenDisplay(NULL);
+ if (v->dpy == NULL) {
+ ast_log(LOG_WARNING, "error opening display\n");
+ goto error;
+ }
+
+ v->b = *geom; /* copy geometry */
+ b = &v->b; /* shorthand */
+ /* find width and height of the screen */
+ screen_num = DefaultScreen(v->dpy);
+ v->screen_width = DisplayWidth(v->dpy, screen_num);
+ v->screen_height = DisplayHeight(v->dpy, screen_num);
+
+ v->image = im = XGetImage(v->dpy,
+ RootWindow(v->dpy, DefaultScreen(v->dpy)),
+ b->x, b->y, b->w, b->h, AllPlanes, ZPixmap);
+ if (v->image == NULL) {
+ ast_log(LOG_WARNING, "error creating Ximage\n");
+ goto error;
+ }
+ switch (im->bits_per_pixel) {
+ case 32:
+ b->pix_fmt = PIX_FMT_RGBA32;
+ break;
+ case 16:
+ b->pix_fmt = (im->green_mask == 0x7e0) ? PIX_FMT_RGB565 : PIX_FMT_RGB555;
+ break;
+ }
+
+ ast_log(LOG_NOTICE, "image: data %p %d bpp fmt %d, mask 0x%lx 0x%lx 0x%lx\n",
+ im->data,
+ im->bits_per_pixel,
+ b->pix_fmt,
+ im->red_mask, im->green_mask, im->blue_mask);
+
+ /* set the pointer but not the size as this is not malloc'ed */
+ b->data = (uint8_t *)im->data;
+ return v;
+
+error:
+ /* XXX maybe XDestroy (v->image) ? */
+ if (v->dpy)
+ XCloseDisplay(v->dpy);
+ v->dpy = NULL;
+ ast_free(v);
+ return NULL;
+}
+
+static struct fbuf_t *grab_x11_read(void *desc)
+{
+ /* read frame from X11 */
+ struct grab_x11_desc *v = desc;
+ struct fbuf_t *b = &v->b;
+
+ XGetSubImage(v->dpy,
+ RootWindow(v->dpy, DefaultScreen(v->dpy)),
+ b->x, b->y, b->w, b->h, AllPlanes, ZPixmap, v->image, 0, 0);
+
+ b->data = (uint8_t *)v->image->data;
+ return b;
+}
+
+static int boundary_checks(int x, int limit)
+{
+ return (x <= 0) ? 0 : (x > limit ? limit : x);
+}
+
+/*! \brief move the origin for the grabbed area, making sure we do not
+ * overflow the screen.
+ */
+static void grab_x11_move(void *desc, int dx, int dy)
+{
+ struct grab_x11_desc *v = desc;
+
+ v->b.x = boundary_checks(v->b.x + dx, v->screen_width - v->b.w);
+ v->b.y = boundary_checks(v->b.y + dy, v->screen_height - v->b.h);
+}
+
+/*! \brief disconnect from the server and release memory */
+static void *grab_x11_close(void *desc)
+{
+ struct grab_x11_desc *v = desc;
+
+ XCloseDisplay(v->dpy);
+ v->dpy = NULL;
+ v->image = NULL;
+ ast_free(v);
+ return NULL;
+}
+
+static struct grab_desc grab_x11_desc = {
+ .name = "X11",
+ .open = grab_x11_open,
+ .read = grab_x11_read,
+ .move = grab_x11_move,
+ .close = grab_x11_close,
+};
+#endif /* HAVE_X11 */
+
+#ifdef HAVE_VIDEODEV_H
+#include <linux/videodev.h> /* Video4Linux stuff is only used in grab_v4l1_open() */
+
+struct grab_v4l1_desc {
+ int fd; /* device handle */
+ struct fbuf_t b; /* buffer (allocated) with grabbed image */
+};
+
+/*! \brief
+ * Open the local video source and allocate a buffer
+ * for storing the image.
+ */
+static void *grab_v4l1_open(const char *dev, struct fbuf_t *geom, int fps)
+{
+ struct video_window vw = { 0 }; /* camera attributes */
+ struct video_picture vp;
+ int fd, i;
+ struct grab_v4l1_desc *v;
+ struct fbuf_t *b;
+
+ fd = open(dev, O_RDONLY | O_NONBLOCK);
+ if (fd < 0) {
+ ast_log(LOG_WARNING, "error opening camera %s\n", dev);
+ return NULL;
+ }
+
+ v = ast_calloc(1, sizeof(*v));
+ if (v == NULL) {
+ ast_log(LOG_WARNING, "no memory for camera %s\n", dev);
+ close(fd);
+ return NULL; /* no memory */
+ }
+ v->fd = fd;
+ v->b = *geom;
+ b = &v->b; /* shorthand */
+
+ i = fcntl(fd, F_GETFL);
+ if (-1 == fcntl(fd, F_SETFL, i | O_NONBLOCK)) {
+ /* non fatal, just emit a warning */
+ ast_log(LOG_WARNING, "error F_SETFL for %s [%s]\n",
+ dev, strerror(errno));
+ }
+ /* set format for the camera.
+ * In principle we could retry with a different format if the
+ * one we are asking for is not supported.
+ */
+ vw.width = b->w;
+ vw.height = b->h;
+ vw.flags = fps << 16;
+ if (ioctl(fd, VIDIOCSWIN, &vw) == -1) {
+ ast_log(LOG_WARNING, "error setting format for %s [%s]\n",
+ dev, strerror(errno));
+ goto error;
+ }
+ if (ioctl(fd, VIDIOCGPICT, &vp) == -1) {
+ ast_log(LOG_WARNING, "error reading picture info\n");
+ goto error;
+ }
+ ast_log(LOG_WARNING,
+ "contrast %d bright %d colour %d hue %d white %d palette %d\n",
+ vp.contrast, vp.brightness,
+ vp.colour, vp.hue,
+ vp.whiteness, vp.palette);
+ /* set the video format. Here again, we don't necessary have to
+ * fail if the required format is not supported, but try to use
+ * what the camera gives us.
+ */
+ b->pix_fmt = vp.palette;
+ vp.palette = VIDEO_PALETTE_YUV420P;
+ if (ioctl(v->fd, VIDIOCSPICT, &vp) == -1) {
+ ast_log(LOG_WARNING, "error setting palette, using %d\n",
+ b->pix_fmt);
+ } else
+ b->pix_fmt = vp.palette;
+ /* allocate the source buffer.
+ * XXX, the code here only handles yuv411, for other formats
+ * we need to look at pix_fmt and set size accordingly
+ */
+ b->size = (b->w * b->h * 3)/2; /* yuv411 */
+ ast_log(LOG_WARNING, "videodev %s opened, size %dx%d %d\n",
+ dev, b->w, b->h, b->size);
+ b->data = ast_calloc(1, b->size);
+ if (!b->data) {
+ ast_log(LOG_WARNING, "error allocating buffer %d bytes\n",
+ b->size);
+ goto error;
+ }
+ ast_log(LOG_WARNING, "success opening camera\n");
+ return v;
+
+error:
+ close(v->fd);
+ fbuf_free(b);
+ ast_free(v);
+ return NULL;
+}
+
+/*! \brief read until error, no data or buffer full.
+ * This might be blocking but no big deal since we are in the
+ * display thread.
+ */
+static struct fbuf_t *grab_v4l1_read(void *desc)
+{
+ struct grab_v4l1_desc *v = desc;
+ struct fbuf_t *b = &v->b;
+ for (;;) {
+ int r, l = b->size - b->used;
+ r = read(v->fd, b->data + b->used, l);
+ // ast_log(LOG_WARNING, "read %d of %d bytes from webcam\n", r, l);
+ if (r < 0) /* read error */
+ break;
+ if (r == 0) /* no data */
+ break;
+ b->used += r;
+ if (r == l) {
+ b->used = 0; /* prepare for next frame */
+ return b;
+ }
+ }
+ return NULL;
+}
+
+static void *grab_v4l1_close(void *desc)
+{
+ struct grab_v4l1_desc *v = desc;
+
+ close(v->fd);
+ v->fd = -1;
+ fbuf_free(&v->b);
+ ast_free(v);
+ return NULL;
+}
+
+/*! \brief our descriptor. We don't have .move */
+static struct grab_desc grab_v4l1_desc = {
+ .name = "v4l1",
+ .open = grab_v4l1_open,
+ .read = grab_v4l1_read,
+ .close = grab_v4l1_close,
+};
+#endif /* HAVE_VIDEODEV_H */
+
+/*
+ * Here you can add more grabbers, e.g. V4L2, firewire,
+ * a file, a still image...
+ */
+
+/*! \brief The list of grabbers supported, with a NULL at the end */
+struct grab_desc *console_grabbers[] = {
+#ifdef HAVE_X11
+ &grab_x11_desc,
+#endif
+#ifdef HAVE_VIDEODEV_H
+ &grab_v4l1_desc,
+#endif
+ NULL
+};
+
+#endif /* HAVE_VIDEO_CONSOLE */
Propchange: trunk/channels/vgrabbers.c
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Propchange: trunk/channels/vgrabbers.c
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