[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Gnash-commit] /srv/bzr/gnash/trunk r11280: brought VideoInput and findw
|
From: |
Ben Limmer |
|
Subject: |
[Gnash-commit] /srv/bzr/gnash/trunk r11280: brought VideoInput and findwebcam files up to coding style requirements |
|
Date: |
Fri, 17 Jul 2009 15:38:26 -0600 |
|
User-agent: |
Bazaar (1.13.1) |
------------------------------------------------------------
revno: 11280
committer: Ben Limmer <address@hidden>
branch nick: trunk
timestamp: Fri 2009-07-17 15:38:26 -0600
message:
brought VideoInput and findwebcam files up to coding style requirements
modified:
libmedia/VideoInput.cpp
libmedia/VideoInput.h
libmedia/gst/VideoInputGst.cpp
libmedia/gst/VideoInputGst.h
utilities/findwebcams.cpp
=== modified file 'libmedia/VideoInput.cpp'
--- a/libmedia/VideoInput.cpp 2009-07-16 18:44:25 +0000
+++ b/libmedia/VideoInput.cpp 2009-07-17 21:38:26 +0000
@@ -18,19 +18,21 @@
#include "VideoInput.h"
+//IMPORTANT: This file has not been worked on yet!
+
namespace gnash {
namespace media {
- /*
- //constructor
- VideoInput::VideoInput() {
- //first call the Gst find_vid_devs to get an array of
information
- //about devices attached to the machine
- std::vector<GnashWebcam*> vid_vect = gst::find_vid_devs();
- int i;
- for (i = 0; i != vid_vect.size(); i++) {
- _names.push_back(vid_vect[i]->get_product_name)
- }
- } */
-
+ /*
+ //constructor
+ VideoInput::VideoInput() {
+ //first call the Gst find_vid_devs to get an array of information
+ //about devices attached to the machine
+ std::vector<GnashWebcam*> vid_vect = gst::find_vid_devs();
+ int i;
+ for (i = 0; i != vid_vect.size(); i++) {
+ _names.push_back(vid_vect[i]->get_product_name)
+ }
+ } */
+
} //media namespace
} //gnash namespace
=== modified file 'libmedia/VideoInput.h'
--- a/libmedia/VideoInput.h 2009-07-16 18:44:25 +0000
+++ b/libmedia/VideoInput.h 2009-07-17 21:38:26 +0000
@@ -23,99 +23,101 @@
#include <string>
#include <vector>
+//IMPORTANT: I have only simply copied over the AS API into this
+// file. No real implementation has actually happened here yet.
namespace gnash {
namespace media {
class VideoInput {
-
+
public:
- VideoInput() {}
+ VideoInput() {}
- // virtual classes need a virtual destructor !
- virtual ~VideoInput() {}
-
- void setKeyFramInterval(int keyFrameInterval);
-
- void setLoopback(bool compress);
-
- void setMode(int width, int height, double fps, bool favorArea);
-
- void setQuality(int bandwidth, int quality);
-
- //need to figure out how to properly write this
- //static Camera* getCamera(std::string name);
-
- //setters and getters
- void set_activityLevel(double a) {_activityLevel = a;};
- double get_activityLevel () {return _activityLevel;};
-
- void set_bandwidth(int b) {_bandwidth = b;};
- int get_bandwidth() {return _bandwidth;};
-
- void set_currentFPS(double f) {_currentFPS=f;};
- double get_currentFPS() {return _currentFPS;};
-
- void set_fps(double f) {_fps = f;};
- double get_fps() {return _fps;};
-
- void set_height(int h) {_height = h;};
- int get_height() {return _height;};
-
- void set_index(int i) {_index = i;};
- int get_index() {return _index;};
-
- void set_keyFrameInterval(int i) {_keyFrameInterval = i;};
- int get_keyFrameInterval() {return _keyFrameInterval;};
-
- bool get_loopback() {return _loopback;};
-
- void set_motionLevel(int m) {_motionLevel = m;};
- int get_motionLevel() {return _motionLevel;};
-
- void set_motionTimeout(int m) {_motionTimeout = m;};
- int get_motionTimeout() {return _motionTimeout;};
-
- void set_muted(bool m) {_muted = m;};
- bool get_muted() {return _muted;};
-
- void set_name(std::string name) {_name = name;};
- std::string get_name() {return _name;};
-
- //figure out how to implement vector
-
- void set_quality(int q) {_quality = q;};
- int get_quality() {return _quality;};
-
- void set_width(int w) {_width = w;};
- int get_width() {return _width;};
+ // virtual classes need a virtual destructor !
+ virtual ~VideoInput() {}
+
+ void setKeyFramInterval(int keyFrameInterval);
+
+ void setLoopback(bool compress);
+
+ void setMode(int width, int height, double fps, bool favorArea);
+
+ void setQuality(int bandwidth, int quality);
+
+ //need to figure out how to properly write this
+ //static Camera* getCamera(std::string name);
+
+ //setters and getters
+ void set_activityLevel(double a) {_activityLevel = a;};
+ double get_activityLevel () {return _activityLevel;};
+
+ void set_bandwidth(int b) {_bandwidth = b;};
+ int get_bandwidth() {return _bandwidth;};
+
+ void set_currentFPS(double f) {_currentFPS=f;};
+ double get_currentFPS() {return _currentFPS;};
+
+ void set_fps(double f) {_fps = f;};
+ double get_fps() {return _fps;};
+
+ void set_height(int h) {_height = h;};
+ int get_height() {return _height;};
+
+ void set_index(int i) {_index = i;};
+ int get_index() {return _index;};
+
+ void set_keyFrameInterval(int i) {_keyFrameInterval = i;};
+ int get_keyFrameInterval() {return _keyFrameInterval;};
+
+ bool get_loopback() {return _loopback;};
+
+ void set_motionLevel(int m) {_motionLevel = m;};
+ int get_motionLevel() {return _motionLevel;};
+
+ void set_motionTimeout(int m) {_motionTimeout = m;};
+ int get_motionTimeout() {return _motionTimeout;};
+
+ void set_muted(bool m) {_muted = m;};
+ bool get_muted() {return _muted;};
+
+ void set_name(std::string name) {_name = name;};
+ std::string get_name() {return _name;};
+
+ //figure out how to implement vector
+
+ void set_quality(int q) {_quality = q;};
+ int get_quality() {return _quality;};
+
+ void set_width(int w) {_width = w;};
+ int get_width() {return _width;};
private:
- //specified in AS livedocs
- double _activityLevel;
- int _bandwidth;
- double _currentFPS;
- double _fps;
- int _height;
- int _index;
- int _keyFrameInterval;
- bool _loopback;
- int _motionLevel;
- int _motionTimeout;
- bool _muted;
- std::string _name;
- std::vector<std::string> _names;
- int _quality;
- int _width;
-
- //gnash specific
- //std::vector<gst::GnashWebcam*> vid_vect;
+ //specified in AS livedocs
+ double _activityLevel;
+ int _bandwidth;
+ double _currentFPS;
+ double _fps;
+ int _height;
+ int _index;
+ int _keyFrameInterval;
+ bool _loopback;
+ int _motionLevel;
+ int _motionTimeout;
+ bool _muted;
+ std::string _name;
+ std::vector<std::string> _names;
+ int _quality;
+ int _width;
+
+ //gnash specific
+ //std::vector<gst::GnashWebcam*> vid_vect;
};
-
+
} // gnash.media namespace
} // gnash namespace
=== modified file 'libmedia/gst/VideoInputGst.cpp'
--- a/libmedia/gst/VideoInputGst.cpp 2009-07-16 20:32:49 +0000
+++ b/libmedia/gst/VideoInputGst.cpp 2009-07-17 21:38:26 +0000
@@ -30,877 +30,934 @@
namespace {
- //get rc file for webcam selection
- gnash::RcInitFile& rcfile = gnash::RcInitFile::getDefaultInstance();
+ //get rc file for webcam selection
+ gnash::RcInitFile& rcfile = gnash::RcInitFile::getDefaultInstance();
}
namespace gnash {
namespace media {
namespace gst {
-
- //initializes the Gstreamer interface
- VideoInputGst::VideoInputGst() {
- gst_init(NULL,NULL);
- }
-
- VideoInputGst::~VideoInputGst() {
- log_unimpl("Video Input destructor");
- }
-
- //populates video devices to a vector of GnashWebcam pointers
- //which contain important information about the hardware camera
- //inputs available on the machine
- void
- VideoInputGst::find_vid_devs() {
- _numdevs = 0;
-
- //find video test sources
- GstElement *element;
- element = gst_element_factory_make ("videotestsrc",
"vidtestsrc");
-
- if (element == NULL) {
- log_error("%s: Could not create video test source. do
you have gst-base-plugins installed?", __FUNCTION__);
- _vid_vect.push_back(NULL);
- _numdevs += 1;
- } else {
- _vid_vect.push_back(new GnashWebcam);
- _vid_vect[_numdevs]->set_element_ptr(element);
-
_vid_vect[_numdevs]->set_gstreamer_src(g_strdup_printf("videotestsrc"));
-
_vid_vect[_numdevs]->set_product_name(g_strdup_printf("videotest"));
- _numdevs += 1;
- }
-
- //find v4l devices
- GstPropertyProbe *probe;
- GValueArray *devarr;
- element = NULL;
- gint i;
-
- element = gst_element_factory_make ("v4lsrc", "v4lvidsrc");
- probe = GST_PROPERTY_PROBE (element);
- devarr = gst_property_probe_probe_and_get_values_name (probe,
"device");
- for (i = 0; devarr != NULL && i < devarr->n_values; ++i) {
- GValue *val;
- gchar *dev_name = NULL;
-
- val = g_value_array_get_nth (devarr, i);
- g_object_set (element, "device", g_value_get_string
(val), NULL);
- gst_element_set_state (element, GST_STATE_PLAYING);
- g_object_get (element, "device-name", &dev_name, NULL);
- gst_element_set_state (element, GST_STATE_NULL);
- if (dev_name == "null") {
- log_trace("No v4l video sources
found...checking for other vid inputs\n");
- }
- else {
- _vid_vect.push_back(new GnashWebcam);
- _vid_vect[_numdevs]->set_element_ptr(element);
-
_vid_vect[_numdevs]->set_gstreamer_src(g_strdup_printf("v4lsrc"));
- _vid_vect[_numdevs]->set_product_name(dev_name);
-
- //set device location information (e.g.
/dev/video0)
- gchar *location;
- g_object_get (element, "device", &location ,
NULL);
- _vid_vect[_numdevs]->set_dev_location(location);
- _numdevs += 1;
- }
- }
- if (devarr) {
- g_value_array_free (devarr);
- }
-
- //find v4l2 devices
- probe = NULL;
- devarr = NULL;
- element = NULL;
-
- element = gst_element_factory_make ("v4l2src", "v4l2vidsrc");
- probe = GST_PROPERTY_PROBE (element);
- devarr = gst_property_probe_probe_and_get_values_name (probe,
"device");
- for (i = 0; devarr != NULL && i < devarr->n_values; ++i) {
- GValue *val;
- gchar *dev_name = NULL;
-
- val = g_value_array_get_nth (devarr, i);
- g_object_set (element, "device", g_value_get_string
(val), NULL);
- gst_element_set_state (element, GST_STATE_PLAYING);
- g_object_get (element, "device-name", &dev_name, NULL);
- gst_element_set_state (element, GST_STATE_NULL);
- if (dev_name == "null") {
- g_print("no v4l2 video sources found.\n");
- }
- else {
- _vid_vect.push_back(new GnashWebcam);
- _vid_vect[_numdevs]->set_element_ptr(element);
-
_vid_vect[_numdevs]->set_gstreamer_src(g_strdup_printf("v4l2src"));
- _vid_vect[_numdevs]->set_product_name(dev_name);
-
- //set device location information (e.g.
/dev/video0)
- gchar *location;
- g_object_get (element, "device", &location ,
NULL);
- _vid_vect[_numdevs]->set_dev_location(location);
- _numdevs += 1;
- }
- }
- if (devarr) {
- g_value_array_free (devarr);
- }
- }
-
- //called by add_supported_format. finds the highest possible framerate
- //to record at (can be shaped down by a filter for performance)
- void
- VideoInputGst::find_highest_framerate(WebcamVidFormat *format)
- {
- gint framerate_numerator;
- gint framerate_denominator;
- gint i;
-
- //Select the highest framerate up to less than or equal to 30 Hz
- framerate_numerator = 1;
- framerate_denominator = 1;
- for (i = 0; i < format->num_framerates; i++) {
- gfloat framerate = format->framerates[i].numerator /
format->framerates[i].denominator;
- if (framerate > ((float) framerate_numerator /
framerate_denominator)
- && framerate <= 30) {
- framerate_numerator =
format->framerates[i].numerator;
- framerate_denominator =
format->framerates[i].denominator;
- }
- }
- //set highest found above
- format->highest_framerate.numerator = framerate_numerator;
- format->highest_framerate.denominator = framerate_denominator;
- }
-
- //find the framerates at which the selected format can handle input
- void
- VideoInputGst::get_supported_framerates(WebcamVidFormat *video_format,
GstStructure *structure)
- {
- const GValue *framerates;
- gint i, j;
-
- //note that framerates may contain one value, a list, or a range
- framerates = gst_structure_get_value (structure, "framerate");
- if (GST_VALUE_HOLDS_FRACTION (framerates)) {
- video_format->num_framerates = 1;
- video_format->framerates = g_new0 (FramerateFraction,
video_format->num_framerates);
- video_format->framerates[0].numerator =
gst_value_get_fraction_numerator (framerates);
- video_format->framerates[0].denominator =
gst_value_get_fraction_denominator (framerates);
- }
- else if (GST_VALUE_HOLDS_LIST (framerates)) {
- video_format->num_framerates = gst_value_list_get_size
(framerates);
- video_format->framerates = g_new0 (FramerateFraction,
video_format->num_framerates);
- for (i = 0; i < video_format->num_framerates; i++) {
- const GValue *value;
- value = gst_value_list_get_value (framerates,
i);
- video_format->framerates[i].numerator =
gst_value_get_fraction_numerator (value);
- video_format->framerates[i].denominator =
gst_value_get_fraction_denominator (value);
- }
- }
- else if (GST_VALUE_HOLDS_FRACTION_RANGE (framerates)) {
- gint numerator_min, denominator_min, numerator_max,
denominator_max;
- const GValue *fraction_range_min;
- const GValue *fraction_range_max;
-
- fraction_range_min = gst_value_get_fraction_range_min
(framerates);
- numerator_min = gst_value_get_fraction_numerator
(fraction_range_min);
- denominator_min = gst_value_get_fraction_denominator
(fraction_range_min);
-
- fraction_range_max = gst_value_get_fraction_range_max
(framerates);
- numerator_max = gst_value_get_fraction_numerator
(fraction_range_max);
- denominator_max = gst_value_get_fraction_denominator
(fraction_range_max);
- g_print ("FractionRange: %d/%d - %d/%d\n",
numerator_min, denominator_min, numerator_max, denominator_max);
-
- video_format->num_framerates = (numerator_max -
numerator_min + 1) * (denominator_max - denominator_min + 1);
- video_format->framerates = g_new0 (FramerateFraction,
video_format->num_framerates);
- int k = 0;
- for (i = numerator_min; i <= numerator_max; i++) {
- for (j = denominator_min; j <= denominator_max;
j++) {
- video_format->framerates[k].numerator
= i;
- video_format->framerates[k].denominator
= j;
- k++;
- }
- }
- }
- else {
- g_critical ("GValue type %s, cannot be handled for
framerates", G_VALUE_TYPE_NAME (framerates));
- }
- }
-
- //we found a supported framerate and want to add the information to
- //the GnashWebcam structure
- void
- VideoInputGst::add_supported_format(GnashWebcam *cam, WebcamVidFormat
*video_format,
- GstStructure *format_structure)
- {
- gint i;
- gchar *resolution;
-
- get_supported_framerates(video_format, format_structure);
- find_highest_framerate(video_format);
-
- resolution = g_strdup_printf ("%ix%i", video_format->width,
- video_format->height);
- i = GPOINTER_TO_INT(g_hash_table_lookup
(cam->supported_resolutions, resolution));
-
- //if i returns a value, maybe this resolution has been added
previously?
- if(i) {
- WebcamVidFormat *curr_format =
&g_array_index(cam->video_formats, WebcamVidFormat, i - 1);
- gfloat new_framerate =
(float)(video_format->highest_framerate.numerator /
- video_format->highest_framerate.denominator);
- gfloat curr_framerate =
(float)(curr_format->highest_framerate.numerator /
-
curr_format->highest_framerate.denominator);
- if (new_framerate > curr_framerate) {
- log_debug("higher framerate replacing existing
format\n");
- *curr_format = *video_format;
- }
-
- g_free (resolution);
-
- return;
- }
-
- g_array_append_val (cam->video_formats, *video_format);
- g_hash_table_insert (cam->supported_resolutions, resolution,
- GINT_TO_POINTER(cam->num_video_formats + 1));
-
- cam->num_video_formats++;
- }
-
- //pulls webcam device selection from gnashrc (will eventually tie into
- //gui)
- void
- VideoInputGst::make_webcamDevice_selection() {
- int dev_select;
- dev_select = rcfile.getWebcamDevice();
- if (dev_select == -1) {
- log_error("%s: No webcam selected in rc file, setting
to videotestsource", __FUNCTION__);
- rcfile.setWebcamDevice(0);
- dev_select = rcfile.getWebcamDevice();
- } else {
- log_trace("Camera %d specified in gnashrc file, using
that one.\n", dev_select);
- }
- //now that a selection has been made, get capabilities of that
device
- get_selected_caps(rcfile.getWebcamDevice());
-
- //now transfer gathered information over to the structure that
will hold
- //pipelining information
- GnashWebcamPrivate *webcam = NULL;
- webcam = transfer_to_private(dev_select);
- if (webcam == NULL) {
- log_error("%s: GnashWebcamPrivate transfer didn't work
as intended", __FUNCTION__);
- }
-
- //now create the main bin (also calls webcam_create_source_bin)
- gboolean result = false;
- result = webcam_create_main_bin(webcam);
- if (result != true) {
- log_error("%s: webcam_create_main_bin reported an error
(returned false)", __FUNCTION__);
- } else {
- result = false;
- }
-
- //now create video display bin
- result = webcam_create_display_bin(webcam);
- if (result != true) {
- log_error("%s: webcam_create_display_bin reported an
error (returned false)", __FUNCTION__);
- } else {
- result = false;
- }
-
- //try to link up the main and display bins
- result = webcam_make_video_display_link(webcam);
- if (result != true) {
- log_error("%s: webcam_make_video_display_link reported
an error (returned false)", __FUNCTION__);
- } else {
- result = false;
- }
-
- //now create the save bin
- result = webcam_create_save_bin(webcam);
- if (result != true) {
- log_error("%s: webcam_create_save_bin reported an error
(returned false)", __FUNCTION__);
- } else {
- result = false;
- }
-
- //start up the pipeline
- webcam_play(webcam);
- }
-
- //called after a device selection, this starts enumerating the device's
- //capabilities
- void
- VideoInputGst::get_selected_caps(gint dev_select)
- {
- GstElement *pipeline;
- gchar *command;
- GError *error = NULL;
- GstStateChangeReturn return_val;
- GstBus *bus;
- GstMessage *message;
-
- GnashWebcam *data_struct = _vid_vect[dev_select];
- GstElement *element;
- element = data_struct->get_element_ptr();
-
- //create tester pipeline to enumerate properties
- command = g_strdup_printf ("%s name=src device=%s ! fakesink",
- data_struct->get_gstreamer_src(),
data_struct->get_dev_location());
- pipeline = gst_parse_launch(command, &error);
- if ((pipeline != NULL) && (error == NULL)) {
- //Wait at most 5 seconds for the pipeline to start
playing
- gst_element_set_state (pipeline, GST_STATE_PLAYING);
- return_val = gst_element_get_state (pipeline, NULL,
NULL, 5 * GST_SECOND);
-
- //errors on bus?
- bus = gst_element_get_bus (pipeline);
- message = gst_bus_poll (bus, GST_MESSAGE_ERROR, 0);
-
- if (GST_IS_OBJECT(bus)){
- gst_object_unref (bus);
- } else {
- log_error("%s: Pipeline bus isn't an object for
some reason", __FUNCTION__);
- }
-
- //if everything above worked properly, begin probing
for values
- if ((return_val == GST_STATE_CHANGE_SUCCESS) &&
(message == NULL)) {
- GstElement *src;
- GstPad *pad;
- gchar *name;
- GstCaps *caps;
-
- gst_element_set_state(pipeline,
GST_STATE_PAUSED);
-
- src = gst_bin_get_by_name(GST_BIN(pipeline),
"src");
-
- //get the pad, find the capabilities for
probing in supported vid formats
- pad = gst_element_get_pad (src, "src");
- caps = gst_pad_get_caps (pad);
- if (GST_IS_OBJECT(pad)) {
- gst_object_unref (pad);
- } else {
- log_error("%s: Template pad isn't an
object for some reason", __FUNCTION__);
- }
-
- get_supported_formats(data_struct, caps);
-
- gst_caps_unref (caps);
- }
- gst_element_set_state (pipeline, GST_STATE_NULL);
- if (GST_IS_OBJECT(pipeline)){
- gst_object_unref (pipeline);
- } else {
- log_error("%s: pipeline isn't an object for
some reason", __FUNCTION__);
- }
- }
-
- if (error) {
- g_error_free (error);
- }
- g_free (command);
- }
-
- //probe the selected camera for the formats it supports
- void
- VideoInputGst::get_supported_formats(GnashWebcam *cam, GstCaps *caps) {
- gint i;
- gint num_structs;
-
- num_structs = gst_caps_get_size (caps);
-
- for (i=0; i < num_structs; i++) {
- GstStructure *structure;
- const GValue *width, *height;
-
- //this structure is used to probe the source for
information
- structure = gst_caps_get_structure (caps, i);
-
- //we just want to enumerate raw formats to keep things
consistent
- //so if the strcuture we're currently looking at isn't
either of
- //the standard raw formats, keep iterating through the
loop
- if (!gst_structure_has_name (structure,
"video/x-raw-yuv") &&
- !gst_structure_has_name (structure,
"video/x-raw-rgb"))
- {
- continue;
- }
-
- width = gst_structure_get_value (structure, "width");
- height = gst_structure_get_value (structure, "height");
-
- if (G_VALUE_HOLDS_INT (width)) {
- WebcamVidFormat video_format;
-
- video_format.mimetype = g_strdup
(gst_structure_get_name (structure));
- gst_structure_get_int (structure, "width",
&(video_format.width));
- gst_structure_get_int (structure, "height",
&(video_format.height));
- add_supported_format(cam, &video_format,
structure);
- }
- else if (GST_VALUE_HOLDS_INT_RANGE (width)) {
- int min_width, max_width, min_height,
max_height;
- int cur_width, cur_height;
-
- min_width = gst_value_get_int_range_min
(width);
- max_width = gst_value_get_int_range_max
(width);
- min_height = gst_value_get_int_range_min
(height);
- max_height = gst_value_get_int_range_max
(height);
-
- cur_width = min_width;
- cur_height = min_height;
- while (cur_width <= max_width && cur_height <=
max_height) {
- WebcamVidFormat video_format;
-
- video_format.mimetype = g_strdup
(gst_structure_get_name (structure));
- video_format.width = cur_width;
- video_format.height = cur_height;
- add_supported_format(cam,
&video_format, structure);
- cur_width *= 2;
- cur_height *= 2;
- }
-
- cur_width = max_width;
- cur_height = max_height;
- while (cur_width > min_width && cur_height >
min_height) {
- WebcamVidFormat video_format;
-
- video_format.mimetype = g_strdup
(gst_structure_get_name (structure));
- video_format.width = cur_width;
- video_format.height = cur_height;
- add_supported_format(cam,
&video_format, structure);
- cur_width /= 2;
- cur_height /= 2;
- }
- }
- else {
- log_error("%s: GValue type %s, cannot be
handled for resolution width", __FUNCTION__, G_VALUE_TYPE_NAME (width));
- }
- }
- }
-
- //move the selected camera information to a more robust data structure
- //to store pipeline-ing information
- GnashWebcamPrivate*
- VideoInputGst::transfer_to_private(gint dev_select)
- {
- GnashWebcamPrivate *webcam = new GnashWebcamPrivate;
- if (webcam != NULL) {
- webcam->set_webcam_device(_vid_vect[dev_select]);
-
webcam->set_device_name(_vid_vect[dev_select]->get_product_name());
- _global_webcam = webcam;
- } else {
- log_error("%s: was passed a NULL pointer (supposed to
point to a GnashWebcamPrivate struct)", __FUNCTION__);
- }
- return webcam;
- }
-
- //create a bin containing the source and a connector ghostpad
- gboolean
- VideoInputGst::webcam_create_source_bin(GnashWebcamPrivate *webcam) {
- GError *error = NULL;
- gchar *command = NULL;
-
- if(webcam->_webcam_device == NULL) {
- log_trace("%s: looks like you don't have any webcams
chosen, using videotestsrc", __FUNCTION__);
- webcam->_webcam_source_bin =
gst_parse_bin_from_description (
- "videotestsrc name=video_source ! capsfilter
name=capsfilter",
- TRUE, &error);
- log_debug("GstPipeline command: videotestsrc
name=video_source ! capsfilter name=capsfilter");
- }
- else {
- WebcamVidFormat *format = NULL;
- gint i;
- gchar *resolution;
-
- resolution = g_strdup_printf("%ix%i",
webcam->_x_resolution,
-
webcam->_y_resolution);
-
- //use these resolutions determined above if the camera
supports it
- if (webcam->_x_resolution != 0 && webcam->_y_resolution
!= 0) {
-
- i = GPOINTER_TO_INT(g_hash_table_lookup
(webcam->_webcam_device->supported_resolutions, resolution));
- //the selected res is supported if i
- if (i) {
- format = &g_array_index
(webcam->_webcam_device->video_formats,
- WebcamVidFormat, i -
1);
- }
- }
-
- //if format didn't get set, something went wrong. try
picking
- //the first supported format and a different supported
resolution
- if (!format) {
- format = &g_array_index
(webcam->_webcam_device->video_formats,
- WebcamVidFormat, 0);
- for (i = 1; i <
webcam->_webcam_device->num_video_formats; i++) {
- //debug
- //g_print("value from vid format is: %d
\n", g_array_index(webcam->_webcam_device->video_formats, WebcamVidFormat,
i).width);
- //g_print("value from format var is: %d
\n", format->width);
- if (g_array_index
(webcam->_webcam_device->video_formats,
- WebcamVidFormat,
i).width <= format->width){
- format = &g_array_index
(webcam->_webcam_device->video_formats,
- WebcamVidFormat, i);
- }
- }
- }
-
- webcam->_current_format = format;
- g_free(resolution);
-
- //if format isn't set, something is still going wrong,
make generic
- //components and see if they work!
- if (format == NULL) {
- if (error != NULL) {
- g_error_free (error);
- error = NULL;
- }
- webcam->_webcam_source_bin =
gst_parse_bin_from_description ("videotestsrc name=video_source",
-
TRUE, &error);
- webcam->_video_source = gst_bin_get_by_name
(GST_BIN (webcam->_webcam_source_bin), "video_source");
-
- //if there are still errors, something's up,
return out of function
- if (error != NULL) {
- g_error_free (error);
- return false;
- }
- webcam->_capsfilter = gst_bin_get_by_name
(GST_BIN (webcam->_webcam_source_bin),
-
"capsfilter");
- return true;
- }
-
- //execution here means we're good to make the pipeline
- else {
- command = g_strdup_printf (
- "%s name=video_source device=%s ! capsfilter
name=capsfilter
caps=video/x-raw-rgb,width=%d,height=%d,framerate=%d/%d;video/x-raw-yuv,width=%d,height=%d,framerate=%d/%d",
- webcam->_webcam_device->get_gstreamer_src(),
- webcam->_webcam_device->get_dev_location(),
- format->width,
- format->height,
- format->highest_framerate.numerator,
- format->highest_framerate.denominator,
- format->width,
- format->height,
- format->highest_framerate.numerator,
- format->highest_framerate.denominator);
-
- //debug
- log_debug ("GstPipeline command is: %s\n",
command);
-
- webcam->_webcam_source_bin =
gst_parse_bin_from_description (command, TRUE, &error);
- if (webcam->_webcam_source_bin == NULL) {
- log_error ("%s: Creation of the
webcam_source_bin failed", __FUNCTION__);
- g_print ("the error was %s\n",
error->message);
- return false;
- }
-
- g_free(command);
-
- webcam->_video_source = gst_bin_get_by_name
(GST_BIN (webcam->_webcam_source_bin), "video_source");
- webcam->_capsfilter = gst_bin_get_by_name
(GST_BIN (webcam->_webcam_source_bin), "capsfilter");
- return true;
- }
- }
- return true;
- }
-
- //create a display bin that has ghostpads which allow display-to-screen
- //capabilities as well as save-to-file or buffer capabilities (both
- //implemented as bin ghostpads)
- gboolean
- VideoInputGst::webcam_create_main_bin(GnashWebcamPrivate *webcam) {
- GstElement *tee, *video_display_queue, *save_queue;
- gboolean ok;
- GstPad *pad;
-
- //initialize a new GST pipeline
- webcam->_pipeline = gst_pipeline_new("pipeline");
-
- webcam->_webcam_main_bin = gst_bin_new ("webcam_main_bin");
-
- ok = webcam_create_source_bin(webcam);
- if (ok != true) {
- log_error("%s: problem creating source bin",
__FUNCTION__);
- return false;
- }
-
- if ((tee = gst_element_factory_make ("tee", "tee")) == NULL) {
- log_error("%s: problem creating tee element",
__FUNCTION__);
- return false;
- }
- if ((save_queue = gst_element_factory_make("queue",
"save_queue")) == NULL) {
- log_error("%s: problem creating save_queue element",
__FUNCTION__);
- return false;
- }
- if ((video_display_queue = gst_element_factory_make("queue",
"video_display_queue")) == NULL) {
- log_error("%s: problem creating video_display_queue
element", __FUNCTION__);
- return false;
- }
-
- //add created elements to a bin
- gst_bin_add_many (GST_BIN (webcam->_webcam_main_bin),
webcam->_webcam_source_bin,
- tee, save_queue,
video_display_queue, NULL);
-
- ok = gst_element_link(webcam->_webcam_source_bin, tee);
- if (ok != true) {
- log_error("%s: couldn't link webcam_source_bin and
tee", __FUNCTION__);
- return false;
- }
-
- ok &= gst_element_link_many (tee, save_queue, NULL);
- if (ok != true) {
- log_error("%s: couldn't link tee and save_queue",
__FUNCTION__);
- return false;
- }
-
- ok &= gst_element_link_many (tee, video_display_queue, NULL);
- if (ok != true) {
- log_error("%s: couldn't link tee and
video_display_queue", __FUNCTION__);
- return false;
- }
-
- gst_bin_add (GST_BIN(webcam->_pipeline),
webcam->_webcam_main_bin);
-
- //add ghostpad to save_queue (allows connections between bins)
- pad = gst_element_get_pad (save_queue, "src");
- if (pad == NULL) {
- log_error("%s: couldn't get save_queue_src_pad",
__FUNCTION__);
- return false;
- }
- gst_element_add_pad (webcam->_webcam_main_bin,
gst_ghost_pad_new ("save_queue_src", pad));
- gst_object_unref (GST_OBJECT (pad));
-
- //add ghostpad to video_display_queue
- pad = gst_element_get_pad (video_display_queue, "src");
- if (pad == NULL) {
- log_error("%s: couldn't get video_display_queue_pad",
__FUNCTION__);
- return false;
- }
- gst_element_add_pad (webcam->_webcam_main_bin,
gst_ghost_pad_new ("video_display_queue_src", pad));
- gst_object_unref (GST_OBJECT (pad));
-
-
- if (!ok) {
- log_error("%s: Unable to create main pipeline",
__FUNCTION__);
- return false;
- }
-
- return true;
- }
-
- gboolean
- VideoInputGst::webcam_create_display_bin(GnashWebcamPrivate *webcam) {
- GstElement *video_scale, *video_sink;
- gboolean ok;
- GstPad *pad;
-
- webcam->_video_display_bin = gst_bin_new("video_display_bin");
-
- if (webcam->_video_display_bin == NULL) {
- log_error("%s: something went wrong creating the new
video_display_bin", __FUNCTION__);
- return false;
- }
-
- if ((video_scale = gst_element_factory_make("videoscale",
"video_scale")) == NULL) {
- log_error("%s: problem creating video_scale element",
__FUNCTION__);
- return false;
- }
- else {
- //set bilinear scaling
- g_object_set (video_scale, "method", 1, NULL);
- }
-
- if ((video_sink = gst_element_factory_make("autovideosink",
"video_sink")) == NULL) {
- log_error("%s: problem creating the video_sink
element", __FUNCTION__);
- return false;
- }
-
- //add created elements to a bin
- gst_bin_add_many (GST_BIN (webcam->_video_display_bin),
video_scale, video_sink, NULL);
-
- //drop the display bin into the pipeline
- //gst_bin_add (GST_BIN (webcam->_webcam_main_bin),
webcam->_video_display_bin);
- gst_bin_add (GST_BIN (webcam->_pipeline),
webcam->_video_display_bin);
-
- ok = gst_element_link_many(video_scale, video_sink, NULL);
- if (ok != true) {
- log_error("%s: something went wrong in linking elements
in video_display_bin", __FUNCTION__);
- return false;
- }
-
- //create ghostpad which can be used to connect this bin to the
- //video_display_queue src ghostpad
- pad = gst_element_get_pad (video_scale, "sink");
- gst_element_add_pad (webcam->_video_display_bin,
gst_ghost_pad_new ("sink", pad));
- gst_object_unref (GST_OBJECT (pad));
-
- return true;
- }
-
- //make link between display_queue src ghostpad in main_bin and
- //the elements necessary to display video to screen (_video_display_bin)
- gboolean
- VideoInputGst::webcam_make_video_display_link(GnashWebcamPrivate
*webcam) {
- gboolean ok;
- GstPad *video_display_queue_src, *video_display_bin_sink;
-
- video_display_queue_src =
gst_element_get_pad(webcam->_webcam_main_bin, "video_display_queue_src");
- video_display_bin_sink =
gst_element_get_pad(webcam->_video_display_bin, "sink");
-
- GstPadLinkReturn padreturn;
- padreturn = gst_pad_link(video_display_queue_src,
video_display_bin_sink);
-
- if (padreturn == GST_PAD_LINK_OK) {
- return true;
- } else {
- log_error(_("something went wrong in the
make_video_display_link function"));
- return false;
- }
- }
-
- //create a bin to take the video stream and dump it out to
- //an ogg file
- gboolean
- VideoInputGst::webcam_create_save_bin(GnashWebcamPrivate *webcam) {
- GstElement *video_save_csp, *video_save_rate,
*video_save_scale, *video_enc;
- GstElement *mux;
- GstPad *pad;
- gboolean ok;
-
- webcam->_video_save_bin = gst_bin_new ("video_save_bin");
-
- if ((video_save_csp =
gst_element_factory_make("ffmpegcolorspace", "video_save_csp")) == NULL) {
- log_error("%s: problem with creating video_save_csp
element", __FUNCTION__);
- return false;
- }
- if ((video_enc = gst_element_factory_make("theoraenc",
"video_enc")) == NULL) {
- log_error("%s: problem with creating video_enc
element", __FUNCTION__);
- return false;
- } else {
- g_object_set (video_enc, "keyframe-force", 1, NULL);
- }
-
- if ((video_save_rate = gst_element_factory_make("videorate",
"video_save_rate")) == NULL) {
- log_error("%s: problem with creating video_save_rate
element", __FUNCTION__);
- return false;
- }
- if ((video_save_scale = gst_element_factory_make("videoscale",
"video_save_scale")) == NULL) {
- log_error("%s: problem with creating video_save_scale
element", __FUNCTION__);
- return false;
- } else {
- //Use bilinear scaling
- g_object_set (video_save_scale, "method", 1, NULL);
- }
- if ((mux = gst_element_factory_make("oggmux", "mux")) == NULL) {
- log_error("%s: problem with creating mux element",
__FUNCTION__);
- return false;
- }
- if ((webcam->_video_file_sink =
gst_element_factory_make("filesink", "video_file_sink")) == NULL) {
- log_error("%s: problem with creating video_file_sink
element", __FUNCTION__);
- return false;
- } else {
- g_object_set(webcam->_video_file_sink, "location",
"vidoutput.ogg", NULL);
- }
-
- //add created elements to the video_save_bin in the
datastructure
- gst_bin_add_many (GST_BIN (webcam->_video_save_bin),
video_save_csp,
- video_save_rate, video_save_scale, video_enc,
mux, webcam->_video_file_sink,
- NULL);
-
- //add ghostpad
- pad = gst_element_get_pad (video_save_csp, "sink");
- gst_element_add_pad (webcam->_video_save_bin, gst_ghost_pad_new
("sink", pad));
- gst_object_unref (GST_OBJECT (pad));
-
- ok = gst_element_link_many (video_save_csp, video_save_rate,
video_save_scale, video_enc, mux, webcam->_video_file_sink, NULL);
-
- if (ok != true) {
- log_error("%s: there was some problem in linking!",
__FUNCTION__);
- }
-
- //added starting here
-
- gst_bin_add (GST_BIN(webcam->_pipeline),
webcam->_video_save_bin);
-
- //linking
- GstPad *video_save_queue_src, *video_save_sink;
-
- video_save_queue_src =
gst_element_get_pad(webcam->_webcam_main_bin, "save_queue_src");
- video_save_sink = gst_element_get_pad(webcam->_video_save_bin,
"sink");
-
- GstPadLinkReturn padreturn;
- padreturn = gst_pad_link(video_save_queue_src, video_save_sink);
-
- if (padreturn == GST_PAD_LINK_OK) {
- return true;
- } else {
- log_error("%s: something went wrong in the
make_video_display_link function", __FUNCTION__);
- return false;
- }
- return true;
- }
-
- //to handle messages while the main capture loop is running
- gboolean
- bus_call (GstBus *bus,
- GstMessage *msg,
- gpointer data)
- {
- switch (GST_MESSAGE_TYPE (msg)) {
-
- case GST_MESSAGE_EOS:
- log_trace ("End of stream\n");
- g_main_loop_quit (((class GnashWebcamPrivate
*)data)->_loop);
- break;
-
- case GST_MESSAGE_ERROR: {
- gchar *debug;
- GError *error;
-
- gst_message_parse_error (msg, &error, &debug);
- g_free (debug);
-
- g_printerr ("Error: %s\n", error->message);
- g_error_free (error);
-
- g_main_loop_quit (((class GnashWebcamPrivate
*)data)->_loop);
- break;
- }
- default:
- break;
- }
-
- return TRUE;
- }
-
- //start the pipeline and run the g_main_loop
- void
- VideoInputGst::webcam_play(GnashWebcamPrivate *webcam) {
- GstStateChangeReturn state;
- GstBus *bus;
- GMainLoop *loop;
- gint ret;
-
- //setup bus to watch pipeline for messages
- bus = gst_pipeline_get_bus (GST_PIPELINE (webcam->_pipeline));
- ret = gst_bus_add_watch (bus, bus_call, webcam);
- gst_object_unref (bus);
-
- //declare clock variables to record time (mainly useful in
debug)
- GstClockTime tfthen, tfnow;
- GstClockTimeDiff diff;
-
- tfthen = gst_util_get_timestamp ();
- state = gst_element_set_state (webcam->_pipeline,
GST_STATE_PLAYING);
-
- if (state == GST_STATE_CHANGE_SUCCESS) {
- webcam->_pipeline_is_playing = true;
- }
-
- loop = webcam->_loop;
- log_trace("running (ctrl-c in terminal to quit).....\n");
- g_main_loop_run(loop);
- log_trace("main loop done...\n");
- tfnow = gst_util_get_timestamp ();
- diff = GST_CLOCK_DIFF (tfthen, tfnow);
- log_trace(("Execution ended after %" G_GUINT64_FORMAT "
ns.\n"), diff);
- }
+
+ //initializes the Gstreamer interface
+ VideoInputGst::VideoInputGst() {
+ gst_init(NULL,NULL);
+ }
+
+ VideoInputGst::~VideoInputGst() {
+ log_unimpl("Video Input destructor");
+ }
+
+ //populates video devices to a vector of GnashWebcam pointers
+ //which contain important information about the hardware camera
+ //inputs available on the machine
+ void
+ VideoInputGst::findVidDevs() {
+ _numdevs = 0;
+
+ //find video test sources
+ GstElement *element;
+ element = gst_element_factory_make ("videotestsrc", "vidtestsrc");
+
+ if (element == NULL) {
+ log_error("%s: Could not create video test source.\n",
__FUNCTION__);
+ _vidVect.push_back(NULL);
+ _numdevs += 1;
+ } else {
+ _vidVect.push_back(new GnashWebcam);
+ _vidVect[_numdevs]->setElementPtr(element);
+
_vidVect[_numdevs]->setGstreamerSrc(g_strdup_printf("videotestsrc"));
+ _vidVect[_numdevs]->setProductName(g_strdup_printf("videotest"));
+ _numdevs += 1;
+ }
+
+ //find v4l devices
+ GstPropertyProbe *probe;
+ GValueArray *devarr;
+ element = NULL;
+ gint i;
+
+ element = gst_element_factory_make ("v4lsrc", "v4lvidsrc");
+ probe = GST_PROPERTY_PROBE (element);
+ devarr = gst_property_probe_probe_and_get_values_name (probe,
"device");
+ for (i = 0; devarr != NULL && i < devarr->n_values; ++i) {
+ GValue *val;
+ gchar *dev_name = NULL;
+
+ val = g_value_array_get_nth (devarr, i);
+ g_object_set (element, "device", g_value_get_string (val), NULL);
+ gst_element_set_state (element, GST_STATE_PLAYING);
+ g_object_get (element, "device-name", &dev_name, NULL);
+ gst_element_set_state (element, GST_STATE_NULL);
+ if (dev_name == "null") {
+ log_trace("No v4l video sources. Checking for other vid
inputs\n");
+ }
+ else {
+ _vidVect.push_back(new GnashWebcam);
+ _vidVect[_numdevs]->setElementPtr(element);
+ _vidVect[_numdevs]->setGstreamerSrc(g_strdup_printf("v4lsrc"));
+ _vidVect[_numdevs]->setProductName(dev_name);
+
+ //set device location information (e.g. /dev/video0)
+ gchar *location;
+ g_object_get (element, "device", &location , NULL);
+ _vidVect[_numdevs]->setDevLocation(location);
+ _numdevs += 1;
+ }
+ }
+ if (devarr) {
+ g_value_array_free (devarr);
+ }
+
+ //find v4l2 devices
+ probe = NULL;
+ devarr = NULL;
+ element = NULL;
+
+ element = gst_element_factory_make ("v4l2src", "v4l2vidsrc");
+ probe = GST_PROPERTY_PROBE (element);
+ devarr = gst_property_probe_probe_and_get_values_name (probe,
"device");
+ for (i = 0; devarr != NULL && i < devarr->n_values; ++i) {
+ GValue *val;
+ gchar *dev_name = NULL;
+
+ val = g_value_array_get_nth (devarr, i);
+ g_object_set (element, "device", g_value_get_string (val), NULL);
+ gst_element_set_state (element, GST_STATE_PLAYING);
+ g_object_get (element, "device-name", &dev_name, NULL);
+ gst_element_set_state (element, GST_STATE_NULL);
+ if (dev_name == "null") {
+ g_print("no v4l2 video sources found.\n");
+ }
+ else {
+ _vidVect.push_back(new GnashWebcam);
+ _vidVect[_numdevs]->setElementPtr(element);
+
_vidVect[_numdevs]->setGstreamerSrc(g_strdup_printf("v4l2src"));
+ _vidVect[_numdevs]->setProductName(dev_name);
+
+ //set device location information (e.g. /dev/video0)
+ gchar *location;
+ g_object_get (element, "device", &location , NULL);
+ _vidVect[_numdevs]->setDevLocation(location);
+ _numdevs += 1;
+ }
+ }
+ if (devarr) {
+ g_value_array_free (devarr);
+ }
+ }
+
+ //called by addSupportedFormat. finds the highest possible framerate
+ //to record at (can be shaped down by a filter for performance)
+ void
+ VideoInputGst::findHighestFramerate(WebcamVidFormat *format)
+ {
+ gint framerate_numerator;
+ gint framerate_denominator;
+ gint i;
+
+ //Select the highest framerate up to less than or equal to 30 Hz
+ framerate_numerator = 1;
+ framerate_denominator = 1;
+ for (i = 0; i < format->numFramerates; i++) {
+ gfloat framerate = format->framerates[i].numerator /
+ format->framerates[i].denominator;
+ if (framerate > ((float) framerate_numerator /
framerate_denominator)
+ && framerate <= 30) {
+ framerate_numerator = format->framerates[i].numerator;
+ framerate_denominator = format->framerates[i].denominator;
+ }
+ }
+ //set highest found above
+ format->highestFramerate.numerator = framerate_numerator;
+ format->highestFramerate.denominator = framerate_denominator;
+ }
+
+ //find the framerates at which the selected format can handle input
+ void
+ VideoInputGst::getSupportedFramerates
+ (WebcamVidFormat *video_format, GstStructure *structure)
+ {
+ const GValue *framerates;
+ gint i, j;
+
+ //note that framerates may contain one value, a list, or a range
+ framerates = gst_structure_get_value (structure, "framerate");
+ if (GST_VALUE_HOLDS_FRACTION (framerates)) {
+ video_format->numFramerates = 1;
+ video_format->framerates =
+ g_new0 (FramerateFraction, video_format->numFramerates);
+ video_format->framerates[0].numerator =
+ gst_value_get_fraction_numerator (framerates);
+ video_format->framerates[0].denominator =
+ gst_value_get_fraction_denominator (framerates);
+ }
+ else if (GST_VALUE_HOLDS_LIST (framerates)) {
+ video_format->numFramerates = gst_value_list_get_size (framerates);
+ video_format->framerates =
+ g_new0 (FramerateFraction, video_format->numFramerates);
+ for (i = 0; i < video_format->numFramerates; i++) {
+ const GValue *value;
+ value = gst_value_list_get_value (framerates, i);
+ video_format->framerates[i].numerator =
+ gst_value_get_fraction_numerator (value);
+ video_format->framerates[i].denominator =
+ gst_value_get_fraction_denominator (value);
+ }
+ }
+ else if (GST_VALUE_HOLDS_FRACTION_RANGE (framerates)) {
+ gint numerator_min, denominator_min, numerator_max,
denominator_max;
+ const GValue *fraction_range_min;
+ const GValue *fraction_range_max;
+
+ fraction_range_min =
+ gst_value_get_fraction_range_min (framerates);
+ numerator_min =
+ gst_value_get_fraction_numerator (fraction_range_min);
+ denominator_min =
+ gst_value_get_fraction_denominator (fraction_range_min);
+
+ fraction_range_max = gst_value_get_fraction_range_max (framerates);
+ numerator_max =
+ gst_value_get_fraction_numerator (fraction_range_max);
+ denominator_max =
+ gst_value_get_fraction_denominator (fraction_range_max);
+ g_print ("FractionRange: %d/%d - %d/%d\n",
+ numerator_min, denominator_min, numerator_max,
denominator_max);
+
+ video_format->numFramerates =
+ (numerator_max - numerator_min + 1) *
+ (denominator_max - denominator_min + 1);
+ video_format->framerates =
+ g_new0 (FramerateFraction, video_format->numFramerates);
+ int k = 0;
+ for (i = numerator_min; i <= numerator_max; i++) {
+ for (j = denominator_min; j <= denominator_max; j++) {
+ video_format->framerates[k].numerator = i;
+ video_format->framerates[k].denominator = j;
+ k++;
+ }
+ }
+ }
+ else {
+ g_critical ("GValue type %s, cannot be handled for framerates",
+ G_VALUE_TYPE_NAME (framerates));
+ }
+ }
+
+ //we found a supported framerate and want to add the information to
+ //the GnashWebcam structure
+ void
+ VideoInputGst::addSupportedFormat(GnashWebcam *cam, WebcamVidFormat
*video_format,
+ GstStructure *format_structure)
+ {
+ gint i;
+ gchar *resolution;
+
+ getSupportedFramerates(video_format, format_structure);
+ findHighestFramerate(video_format);
+
+ resolution = g_strdup_printf ("%ix%i", video_format->width,
+ video_format->height);
+ i = GPOINTER_TO_INT(g_hash_table_lookup (cam->supportedResolutions,
resolution));
+
+ //if i returns a value, maybe this resolution has been added
previously?
+ if(i) {
+ WebcamVidFormat *curr_format =
+ &g_array_index(cam->videoFormats, WebcamVidFormat, i - 1);
+ gfloat new_framerate =
(float)(video_format->highestFramerate.numerator /
+ video_format->highestFramerate.denominator);
+ gfloat curr_framerate =
(float)(curr_format->highestFramerate.numerator /
+
curr_format->highestFramerate.denominator);
+ if (new_framerate > curr_framerate) {
+ log_debug("higher framerate replacing existing format\n");
+ *curr_format = *video_format;
+ }
+
+ g_free (resolution);
+
+ return;
+ }
+
+ g_array_append_val (cam->videoFormats, *video_format);
+ g_hash_table_insert (cam->supportedResolutions, resolution,
+ GINT_TO_POINTER(cam->numVideoFormats + 1));
+
+ cam->numVideoFormats++;
+ }
+
+ //pulls webcam device selection from gnashrc (will eventually tie into
+ //gui)
+ void
+ VideoInputGst::makeWebcamDeviceSelection() {
+ int dev_select;
+ dev_select = rcfile.getWebcamDevice();
+ if (dev_select == -1) {
+ log_error("%s: No webcam selected in rc file, setting to
videotestsource",
+ __FUNCTION__);
+ rcfile.setWebcamDevice(0);
+ dev_select = rcfile.getWebcamDevice();
+ } else {
+ log_trace("Camera %d specified in gnashrc file, using that one.\n",
+ dev_select);
+ }
+ //now that a selection has been made, get capabilities of that device
+ getSelectedCaps(rcfile.getWebcamDevice());
+
+ //now transfer gathered information over to the structure that will
hold
+ //pipelining information
+ GnashWebcamPrivate *webcam = NULL;
+ webcam = transferToPrivate(dev_select);
+ if (webcam == NULL) {
+ log_error("%s: GnashWebcamPrivate transfer didn't work as
intended",
+ __FUNCTION__);
+ }
+
+ //now create the main bin (also calls webcamCreateSourceBin)
+ gboolean result = false;
+ result = webcamCreateMainBin(webcam);
+ if (result != true) {
+ log_error("%s: webcamCreateMainBin reported an error",
+ __FUNCTION__);
+ } else {
+ result = false;
+ }
+
+ //now create video display bin
+ result = webcamCreateDisplayBin(webcam);
+ if (result != true) {
+ log_error("%s: webcamCreateDisplayBin reported an error",
+ __FUNCTION__);
+ } else {
+ result = false;
+ }
+
+ //try to link up the main and display bins
+ result = webcamMakeVideoDisplayLink(webcam);
+ if (result != true) {
+ log_error("%s: webcamMakeVideoDisplayLink reported an error",
+ __FUNCTION__);
+ } else {
+ result = false;
+ }
+
+ //now create the save bin
+ result = webcamCreateSaveBin(webcam);
+ if (result != true) {
+ log_error("%s: webcamCreateSaveBin reported an error",
+ __FUNCTION__);
+ } else {
+ result = false;
+ }
+
+ //start up the pipeline
+ webcamPlay(webcam);
+ }
+
+ //called after a device selection, this starts enumerating the device's
+ //capabilities
+ void
+ VideoInputGst::getSelectedCaps(gint dev_select)
+ {
+ GstElement *pipeline;
+ gchar *command;
+ GError *error = NULL;
+ GstStateChangeReturn return_val;
+ GstBus *bus;
+ GstMessage *message;
+
+ GnashWebcam *data_struct = _vidVect[dev_select];
+ GstElement *element;
+ element = data_struct->getElementPtr();
+
+ //create tester pipeline to enumerate properties
+ command = g_strdup_printf ("%s name=src device=%s ! fakesink",
+ data_struct->getGstreamerSrc(), data_struct->getDevLocation());
+ pipeline = gst_parse_launch(command, &error);
+ if ((pipeline != NULL) && (error == NULL)) {
+ //Wait at most 5 seconds for the pipeline to start playing
+ gst_element_set_state (pipeline, GST_STATE_PLAYING);
+ return_val =
+ gst_element_get_state (pipeline, NULL, NULL, 5 * GST_SECOND);
+
+ //errors on bus?
+ bus = gst_element_get_bus (pipeline);
+ message = gst_bus_poll (bus, GST_MESSAGE_ERROR, 0);
+
+ if (GST_IS_OBJECT(bus)){
+ gst_object_unref (bus);
+ } else {
+ log_error("%s: Pipeline bus isn't an object for some reason",
+ __FUNCTION__);
+ }
+
+ //if everything above worked properly, begin probing for values
+ if ((return_val == GST_STATE_CHANGE_SUCCESS) && (message == NULL))
{
+ GstElement *src;
+ GstPad *pad;
+ gchar *name;
+ GstCaps *caps;
+
+ gst_element_set_state(pipeline, GST_STATE_PAUSED);
+
+ src = gst_bin_get_by_name(GST_BIN(pipeline), "src");
+
+ //get the pad, find the capabilities for probing in supported
formats
+ pad = gst_element_get_pad (src, "src");
+ caps = gst_pad_get_caps (pad);
+ if (GST_IS_OBJECT(pad)) {
+ gst_object_unref (pad);
+ } else {
+ log_error("%s: Template pad isn't an object for some
reason",
+ __FUNCTION__);
+ }
+
+ getSupportedFormats(data_struct, caps);
+
+ gst_caps_unref (caps);
+ }
+ gst_element_set_state (pipeline, GST_STATE_NULL);
+ if (GST_IS_OBJECT(pipeline)){
+ gst_object_unref (pipeline);
+ } else {
+ log_error("%s: pipeline isn't an object for some reason",
+ __FUNCTION__);
+ }
+ }
+
+ if (error) {
+ g_error_free (error);
+ }
+ g_free (command);
+ }
+
+ //probe the selected camera for the formats it supports
+ void
+ VideoInputGst::getSupportedFormats(GnashWebcam *cam, GstCaps *caps) {
+ gint i;
+ gint num_structs;
+
+ num_structs = gst_caps_get_size (caps);
+
+ for (i=0; i < num_structs; i++) {
+ GstStructure *structure;
+ const GValue *width, *height;
+
+ //this structure is used to probe the source for information
+ structure = gst_caps_get_structure (caps, i);
+
+ //we just want to enumerate raw formats to keep things consistent
+ //so if the strcuture we're currently looking at isn't either of
+ //the standard raw formats, keep iterating through the loop
+ if (!gst_structure_has_name (structure, "video/x-raw-yuv") &&
+ !gst_structure_has_name (structure, "video/x-raw-rgb"))
+ {
+ continue;
+ }
+
+ width = gst_structure_get_value (structure, "width");
+ height = gst_structure_get_value (structure, "height");
+
+ if (G_VALUE_HOLDS_INT (width)) {
+ WebcamVidFormat video_format;
+
+ video_format.mimetype =
+ g_strdup (gst_structure_get_name (structure));
+ gst_structure_get_int (structure, "width",
&(video_format.width));
+ gst_structure_get_int (structure, "height",
&(video_format.height));
+ addSupportedFormat(cam, &video_format, structure);
+ }
+ else if (GST_VALUE_HOLDS_INT_RANGE (width)) {
+ int min_width, max_width, min_height, max_height;
+ int cur_width, cur_height;
+
+ min_width = gst_value_get_int_range_min (width);
+ max_width = gst_value_get_int_range_max (width);
+ min_height = gst_value_get_int_range_min (height);
+ max_height = gst_value_get_int_range_max (height);
+
+ cur_width = min_width;
+ cur_height = min_height;
+ while (cur_width <= max_width && cur_height <= max_height) {
+ WebcamVidFormat video_format;
+
+ video_format.mimetype =
+ g_strdup (gst_structure_get_name (structure));
+ video_format.width = cur_width;
+ video_format.height = cur_height;
+ addSupportedFormat(cam, &video_format, structure);
+ cur_width *= 2;
+ cur_height *= 2;
+ }
+
+ cur_width = max_width;
+ cur_height = max_height;
+ while (cur_width > min_width && cur_height > min_height) {
+ WebcamVidFormat video_format;
+
+ video_format.mimetype =
+ g_strdup (gst_structure_get_name (structure));
+ video_format.width = cur_width;
+ video_format.height = cur_height;
+ addSupportedFormat(cam, &video_format, structure);
+ cur_width /= 2;
+ cur_height /= 2;
+ }
+ }
+ else {
+ log_error("%s: type %s, cannot be handled for resolution
width",
+ __FUNCTION__, G_VALUE_TYPE_NAME (width));
+ }
+ }
+ }
+
+ //move the selected camera information to a more robust data structure
+ //to store pipeline-ing information
+ GnashWebcamPrivate*
+ VideoInputGst::transferToPrivate(gint dev_select)
+ {
+ GnashWebcamPrivate *webcam = new GnashWebcamPrivate;
+ if (webcam != NULL) {
+ webcam->setWebcamDevice(_vidVect[dev_select]);
+ webcam->setDeviceName(_vidVect[dev_select]->getProductName());
+ _globalWebcam = webcam;
+ } else {
+ log_error("%s: was passed a NULL pointer", __FUNCTION__);
+ }
+ return webcam;
+ }
+
+ //create a bin containing the source and a connector ghostpad
+ gboolean
+ VideoInputGst::webcamCreateSourceBin(GnashWebcamPrivate *webcam) {
+ GError *error = NULL;
+ gchar *command = NULL;
+
+ if(webcam->_webcamDevice == NULL) {
+ log_trace("%s: You don't have any webcams chosen, using
videotestsrc",
+ __FUNCTION__);
+ webcam->_webcamSourceBin = gst_parse_bin_from_description (
+ "videotestsrc name=video_source ! capsfilter name=capsfilter",
+ TRUE, &error);
+ log_debug("Command: videotestsrc name=video_source ! \
+ capsfilter name=capsfilter");
+ }
+ else {
+ WebcamVidFormat *format = NULL;
+ gint i;
+ gchar *resolution;
+
+ resolution = g_strdup_printf("%ix%i", webcam->_xResolution,
+ webcam->_yResolution);
+
+ //use these resolutions determined above if the camera supports it
+ if (webcam->_xResolution != 0 && webcam->_yResolution != 0) {
+
+ i = GPOINTER_TO_INT(g_hash_table_lookup
+ (webcam->_webcamDevice->supportedResolutions, resolution));
+ //the selected res is supported if i
+ if (i) {
+ format = &g_array_index
(webcam->_webcamDevice->videoFormats,
+ WebcamVidFormat, i - 1);
+ }
+ }
+
+ //if format didn't get set, something went wrong. try picking
+ //the first supported format and a different supported resolution
+ if (!format) {
+ format = &g_array_index (webcam->_webcamDevice->videoFormats,
+ WebcamVidFormat, 0);
+ for (i = 1; i < webcam->_webcamDevice->numVideoFormats; i++) {
+ if (g_array_index (webcam->_webcamDevice->videoFormats,
+ WebcamVidFormat, i).width <= format->width){
+ format = &g_array_index
(webcam->_webcamDevice->videoFormats,
+ WebcamVidFormat, i);
+ }
+ }
+ }
+
+ webcam->_currentFormat = format;
+ g_free(resolution);
+
+ //if format isn't set, something is still going wrong, make generic
+ //components and see if they work!
+ if (format == NULL) {
+ if (error != NULL) {
+ g_error_free (error);
+ error = NULL;
+ }
+ webcam->_webcamSourceBin =
+ gst_parse_bin_from_description ("videotestsrc
name=video_source",
+ TRUE, &error);
+ webcam->_videoSource =
+ gst_bin_get_by_name (GST_BIN (webcam->_webcamSourceBin),
+ "video_source");
+
+ //if there are still errors, something's up, return out of
function
+ if (error != NULL) {
+ g_error_free (error);
+ return false;
+ }
+ webcam->_capsFilter =
+ gst_bin_get_by_name (GST_BIN (webcam->_webcamSourceBin),
+ "capsfilter");
+ return true;
+ }
+
+ //execution here means we're good to make the pipeline
+ else {
+ //can't reduce this to 80 line limit without causing problems
+ command = g_strdup_printf (
+ "%s name=video_source device=%s ! capsfilter name=capsfilter
caps=video/x-raw-rgb,width=%d,height=%d,framerate=%d/%d;video/x-raw-yuv,width=%d,height=%d,framerate=%d/%d",
+ webcam->_webcamDevice->getGstreamerSrc(),
+ webcam->_webcamDevice->getDevLocation(),
+ format->width,
+ format->height,
+ format->highestFramerate.numerator,
+ format->highestFramerate.denominator,
+ format->width,
+ format->height,
+ format->highestFramerate.numerator,
+ format->highestFramerate.denominator);
+
+ //debug
+ log_debug ("GstPipeline command is: %s\n", command);
+
+ webcam->_webcamSourceBin =
+ gst_parse_bin_from_description (command, TRUE, &error);
+ if (webcam->_webcamSourceBin == NULL) {
+ log_error ("%s: Creation of the webcam_source_bin failed",
+ __FUNCTION__);
+ g_print ("the error was %s\n", error->message);
+ return false;
+ }
+
+ g_free(command);
+
+ webcam->_videoSource =
+ gst_bin_get_by_name (GST_BIN (webcam->_webcamSourceBin),
+ "video_source");
+ webcam->_capsFilter =
+ gst_bin_get_by_name (GST_BIN (webcam->_webcamSourceBin),
+ "capsfilter");
+ return true;
+ }
+ }
+ return true;
+ }
+
+ //create a display bin that has ghostpads which allow display-to-screen
+ //capabilities as well as save-to-file or buffer capabilities (both
+ //implemented as bin ghostpads)
+ gboolean
+ VideoInputGst::webcamCreateMainBin(GnashWebcamPrivate *webcam) {
+ GstElement *tee, *video_display_queue, *save_queue;
+ gboolean ok;
+ GstPad *pad;
+
+ //initialize a new GST pipeline
+ webcam->_pipeline = gst_pipeline_new("pipeline");
+
+ webcam->_webcamMainBin = gst_bin_new ("webcam_main_bin");
+
+ ok = webcamCreateSourceBin(webcam);
+ if (ok != true) {
+ log_error("%s: problem creating source bin", __FUNCTION__);
+ return false;
+ }
+
+ if ((tee = gst_element_factory_make ("tee", "tee")) == NULL) {
+ log_error("%s: problem creating tee element", __FUNCTION__);
+ return false;
+ }
+ if ((save_queue = gst_element_factory_make("queue", "save_queue")) ==
NULL) {
+ log_error("%s: problem creating save_queue element", __FUNCTION__);
+ return false;
+ }
+ if ((video_display_queue =
+ gst_element_factory_make("queue", "video_display_queue")) == NULL)
{
+ log_error("%s: problem creating video_display_queue element",
__FUNCTION__);
+ return false;
+ }
+
+ //add created elements to a bin
+ gst_bin_add_many (GST_BIN (webcam->_webcamMainBin),
webcam->_webcamSourceBin,
+ tee, save_queue, video_display_queue, NULL);
+
+ ok = gst_element_link(webcam->_webcamSourceBin, tee);
+ if (ok != true) {
+ log_error("%s: couldn't link webcam_source_bin and tee",
__FUNCTION__);
+ return false;
+ }
+
+ ok &= gst_element_link_many (tee, save_queue, NULL);
+ if (ok != true) {
+ log_error("%s: couldn't link tee and save_queue", __FUNCTION__);
+ return false;
+ }
+
+ ok &= gst_element_link_many (tee, video_display_queue, NULL);
+ if (ok != true) {
+ log_error("%s: couldn't link tee and video_display_queue",
__FUNCTION__);
+ return false;
+ }
+
+ gst_bin_add (GST_BIN(webcam->_pipeline), webcam->_webcamMainBin);
+
+ //add ghostpad to save_queue (allows connections between bins)
+ pad = gst_element_get_pad (save_queue, "src");
+ if (pad == NULL) {
+ log_error("%s: couldn't get save_queue_src_pad", __FUNCTION__);
+ return false;
+ }
+ gst_element_add_pad (webcam->_webcamMainBin,
+ gst_ghost_pad_new ("save_queue_src", pad));
+ gst_object_unref (GST_OBJECT (pad));
+
+ //add ghostpad to video_display_queue
+ pad = gst_element_get_pad (video_display_queue, "src");
+ if (pad == NULL) {
+ log_error("%s: couldn't get video_display_queue_pad",
__FUNCTION__);
+ return false;
+ }
+ gst_element_add_pad (webcam->_webcamMainBin,
+ gst_ghost_pad_new ("video_display_queue_src", pad));
+ gst_object_unref (GST_OBJECT (pad));
+
+
+ if (!ok) {
+ log_error("%s: Unable to create main pipeline", __FUNCTION__);
+ return false;
+ }
+
+ return true;
+ }
+
+ gboolean
+ VideoInputGst::webcamCreateDisplayBin(GnashWebcamPrivate *webcam) {
+ GstElement *video_scale, *video_sink;
+ gboolean ok;
+ GstPad *pad;
+
+ webcam->_videoDisplayBin = gst_bin_new("video_display_bin");
+
+ if (webcam->_videoDisplayBin == NULL) {
+ log_error("%s: something went wrong creating the new
video_display_bin",
+ __FUNCTION__);
+ return false;
+ }
+
+ if ((video_scale = gst_element_factory_make("videoscale",
"video_scale")) == NULL) {
+ log_error("%s: problem creating video_scale element",
__FUNCTION__);
+ return false;
+ }
+ else {
+ //set bilinear scaling
+ g_object_set (video_scale, "method", 1, NULL);
+ }
+
+ if ((video_sink = gst_element_factory_make("autovideosink",
"video_sink")) == NULL) {
+ log_error("%s: problem creating the video_sink element",
__FUNCTION__);
+ return false;
+ }
+
+ //add created elements to a bin
+ gst_bin_add_many (GST_BIN (webcam->_videoDisplayBin), video_scale,
video_sink, NULL);
+
+ //drop the display bin into the pipeline
+ //gst_bin_add (GST_BIN (webcam->_webcamMainBin),
webcam->_videoDisplayBin);
+ gst_bin_add (GST_BIN (webcam->_pipeline), webcam->_videoDisplayBin);
+
+ ok = gst_element_link_many(video_scale, video_sink, NULL);
+ if (ok != true) {
+ log_error("%s: something went wrong in linking elements in
video_display_bin",
+ __FUNCTION__);
+ return false;
+ }
+
+ //create ghostpad which can be used to connect this bin to the
+ //video_display_queue src ghostpad
+ pad = gst_element_get_pad (video_scale, "sink");
+ gst_element_add_pad (webcam->_videoDisplayBin, gst_ghost_pad_new
("sink", pad));
+ gst_object_unref (GST_OBJECT (pad));
+
+ return true;
+ }
+
+ //make link between display_queue src ghostpad in main_bin and
+ //the elements necessary to display video to screen (_videoDisplayBin)
+ gboolean
+ VideoInputGst::webcamMakeVideoDisplayLink(GnashWebcamPrivate *webcam) {
+ gboolean ok;
+ GstPad *video_display_queue_src, *video_display_bin_sink;
+
+ video_display_queue_src = gst_element_get_pad(webcam->_webcamMainBin,
+ "video_display_queue_src");
+ video_display_bin_sink = gst_element_get_pad(webcam->_videoDisplayBin,
+ "sink");
+
+ GstPadLinkReturn padreturn;
+ padreturn = gst_pad_link(video_display_queue_src,
video_display_bin_sink);
+
+ if (padreturn == GST_PAD_LINK_OK) {
+ return true;
+ } else {
+ log_error("something went wrong in the make_video_display_link
function");
+ return false;
+ }
+ }
+
+ //create a bin to take the video stream and dump it out to
+ //an ogg file
+ gboolean
+ VideoInputGst::webcamCreateSaveBin(GnashWebcamPrivate *webcam) {
+ GstElement *video_save_csp, *video_save_rate, *video_save_scale,
*video_enc;
+ GstElement *mux;
+ GstPad *pad;
+ gboolean ok;
+
+ webcam->_videoSaveBin = gst_bin_new ("video_save_bin");
+
+ if ((video_save_csp =
+ gst_element_factory_make("ffmpegcolorspace", "video_save_csp"))
+ == NULL) {
+ log_error("%s: problem with creating video_save_csp element",
+ __FUNCTION__);
+ return false;
+ }
+ if ((video_enc = gst_element_factory_make("theoraenc", "video_enc"))
== NULL) {
+ log_error("%s: problem with creating video_enc element",
__FUNCTION__);
+ return false;
+ } else {
+ g_object_set (video_enc, "keyframe-force", 1, NULL);
+ }
+
+ if ((video_save_rate = gst_element_factory_make("videorate",
"video_save_rate")) == NULL) {
+ log_error("%s: problem with creating video_save_rate element",
__FUNCTION__);
+ return false;
+ }
+ if ((video_save_scale = gst_element_factory_make("videoscale",
"video_save_scale")) == NULL) {
+ log_error("%s: problem with creating video_save_scale element",
__FUNCTION__);
+ return false;
+ } else {
+ //Use bilinear scaling
+ g_object_set (video_save_scale, "method", 1, NULL);
+ }
+ if ((mux = gst_element_factory_make("oggmux", "mux")) == NULL) {
+ log_error("%s: problem with creating mux element", __FUNCTION__);
+ return false;
+ }
+ if ((webcam->_videoFileSink = gst_element_factory_make("filesink",
"video_file_sink")) == NULL) {
+ log_error("%s: problem with creating video_file_sink element",
__FUNCTION__);
+ return false;
+ } else {
+ g_object_set(webcam->_videoFileSink, "location", "vidoutput.ogg",
NULL);
+ }
+
+ //add created elements to the video_save_bin in the datastructure
+ gst_bin_add_many (GST_BIN (webcam->_videoSaveBin), video_save_csp,
+ video_save_rate, video_save_scale, video_enc, mux,
webcam->_videoFileSink,
+ NULL);
+
+ //add ghostpad
+ pad = gst_element_get_pad (video_save_csp, "sink");
+ gst_element_add_pad (webcam->_videoSaveBin, gst_ghost_pad_new ("sink",
pad));
+ gst_object_unref (GST_OBJECT (pad));
+
+ ok = gst_element_link_many (video_save_csp, video_save_rate,
+ video_save_scale, video_enc, mux, webcam->_videoFileSink, NULL);
+
+ if (ok != true) {
+ log_error("%s: there was some problem in linking!", __FUNCTION__);
+ }
+
+ //added starting here
+
+ gst_bin_add (GST_BIN(webcam->_pipeline), webcam->_videoSaveBin);
+
+ //linking
+ GstPad *video_save_queue_src, *video_save_sink;
+
+ video_save_queue_src = gst_element_get_pad(webcam->_webcamMainBin,
"save_queue_src");
+ video_save_sink = gst_element_get_pad(webcam->_videoSaveBin, "sink");
+
+ GstPadLinkReturn padreturn;
+ padreturn = gst_pad_link(video_save_queue_src, video_save_sink);
+
+ if (padreturn == GST_PAD_LINK_OK) {
+ return true;
+ } else {
+ log_error("%s: something went wrong in the make_video_display_link
function",
+ __FUNCTION__);
+ return false;
+ }
+ return true;
+ }
+
+ //to handle messages while the main capture loop is running
+ gboolean
+ bus_call (GstBus *bus,
+ GstMessage *msg,
+ gpointer data)
+ {
+ switch (GST_MESSAGE_TYPE (msg)) {
+
+ case GST_MESSAGE_EOS:
+ log_trace ("End of stream\n");
+ g_main_loop_quit (((class GnashWebcamPrivate *)data)->_loop);
+ break;
+
+ case GST_MESSAGE_ERROR: {
+ gchar *debug;
+ GError *error;
+
+ gst_message_parse_error (msg, &error, &debug);
+ g_free (debug);
+
+ g_printerr ("Error: %s\n", error->message);
+ g_error_free (error);
+
+ g_main_loop_quit (((class GnashWebcamPrivate *)data)->_loop);
+ break;
+ }
+ default:
+ break;
+ }
+
+ return TRUE;
+ }
+
+ //start the pipeline and run the g_main_loop
+ void
+ VideoInputGst::webcamPlay(GnashWebcamPrivate *webcam) {
+ GstStateChangeReturn state;
+ GstBus *bus;
+ GMainLoop *loop;
+ gint ret;
+
+ //setup bus to watch pipeline for messages
+ bus = gst_pipeline_get_bus (GST_PIPELINE (webcam->_pipeline));
+ ret = gst_bus_add_watch (bus, bus_call, webcam);
+ gst_object_unref (bus);
+
+ //declare clock variables to record time (mainly useful in debug)
+ GstClockTime tfthen, tfnow;
+ GstClockTimeDiff diff;
+
+ tfthen = gst_util_get_timestamp ();
+ state = gst_element_set_state (webcam->_pipeline, GST_STATE_PLAYING);
+
+ if (state == GST_STATE_CHANGE_SUCCESS) {
+ webcam->_pipelineIsPlaying = true;
+ }
+
+ loop = webcam->_loop;
+ log_trace("running (ctrl-c in terminal to quit).....\n");
+ g_main_loop_run(loop);
+ log_trace("main loop done...\n");
+ tfnow = gst_util_get_timestamp ();
+ diff = GST_CLOCK_DIFF (tfthen, tfnow);
+ log_trace(("Execution ended after %" G_GUINT64_FORMAT " ns.\n"), diff);
+ }
} //gst namespace
} //media namespace
} //gnash namespace
=== modified file 'libmedia/gst/VideoInputGst.h'
--- a/libmedia/gst/VideoInputGst.h 2009-07-16 18:44:25 +0000
+++ b/libmedia/gst/VideoInputGst.h 2009-07-17 21:38:26 +0000
@@ -37,23 +37,23 @@
/// the information returned from probing hardware cameras for supported
/// framerates.
class FramerateFraction{
- public:
- /// \var FramerateFraction::numerator
- /// \brief contains a gint value for the numerator portion of a
fraction.
- gint numerator;
- /// \var FramerateFraction::denominator
- /// \brief contains a gint value for the denominator portion of
a fraction.
- gint denominator;
-
- /// \brief Constructor which sets the numerator and denominator
fields upon construction.
- ///
- /// @param num The integer numerator value to initialize the
FramerateFraction class with.
- ///
- /// @param denom The integer denominator value to initialzie
the FramerateFraction class with.
- FramerateFraction(gint num, gint denom);
-
- /// Create a new empty FramerateFraction class.
- FramerateFraction();
+ public:
+ /// \var FramerateFraction::numerator
+ /// \brief contains a gint value for the numerator portion of a
fraction.
+ gint numerator;
+ /// \var FramerateFraction::denominator
+ /// \brief contains a gint value for the denominator portion of a
fraction.
+ gint denominator;
+
+ /// \brief Constructor which sets the numerator and denominator fields
upon construction.
+ ///
+ /// @param num The integer numerator value to initialize the
FramerateFraction class with.
+ ///
+ /// @param denom The integer denominator value to initialzie the
FramerateFraction class with.
+ FramerateFraction(gint num, gint denom);
+
+ /// Create a new empty FramerateFraction class.
+ FramerateFraction();
};
/// \class GnashWebcam
@@ -64,102 +64,102 @@
/// specifies a hardware input device to use in the gnashrc file.
///
class GnashWebcam {
- public:
- /// \brief Accessor to retreive a the private _element variable
- /// from the GnashWebcam class which contains a pointer
- /// to the video source element.
- ///
- /// @return GstElement* to the video source element
- GstElement* get_element_ptr() {return _element;};
-
- /// \brief Accessor to set the private _element variable from
- /// the GnashWebcam class.
- ///
- /// @param element The GstElement pointer to the video source
element.
- void set_element_ptr(GstElement* element) {_element = element;};
-
- /// \brief Accessor to get the private _dev_location variable
from
- /// the GnashWebcam class.
- ///
- /// @return The _dev_location private variable from GnashWebcam
class.
- gchar* get_dev_location() {return _dev_location;};
-
- /// \brief Accessor to set the private _dev_location variable
from
- /// the GnashWebcam class.
- ///
- /// @param l A gchar* containing the physical location of the
video
- /// input hardware device (e.g. on Linux typically would
be set
- /// to '/dev/video0').
- void set_dev_location(gchar *l) {_dev_location = l;};
-
- /// \brief Accessor to return the private _gstreamer_src
variable
- /// from the GnashWebcam class.
- ///
- /// @return The _gstreamer_src variable from the GnashWebcam
class.
- /// which should contain the type of the Gstreamer video
source
- /// element (e.g. v4lsrc, v4l2src).
- gchar* get_gstreamer_src() {return _gstreamer_src;};
-
- /// \brief Accessor to set the private _gstreamer_src variable
- /// from the GnashWebcam class.
- ///
- /// @param s A gchar* containing the type of the Gstreamer
source
- /// element type (e.g. v4lsrc, v4l2src, etc)
- void set_gstreamer_src(gchar *s) {_gstreamer_src = s;};
-
- /// \brief Accessor to get the private _product_name variable
- /// from the GnashWebcam class.
- ///
- /// @return A gchar* containing the video input's hardware name
- /// (e.g. Built-In Webcam or Microsoft LifeCam VX500).
- gchar* get_product_name() {return _product_name;};
-
- /// \brief Accessor to set the private _product_name variable
- /// from the GnashWebcam class.
- ///
- /// @param n A gchar* to the hardware input device's hardware
name
- /// (e.g. Built-In Webcam or Microsoft LifeCam VX500).
- void set_product_name(gchar *n) {_product_name = n;};
-
- /// \var GnashWebcam::num_video_formats
- /// \brief Contains an integer value representing the number of
- /// video formats the camera supports (used for iteration
- /// purposes).
- gint num_video_formats;
-
- /// \var GnashWebcam::video_formats
- /// \brief A GArray containing WebcamVidFormat data structures
- /// (see WebcamVidFormat class documentation for more
info).
- GArray* video_formats;
-
- /// \var GnashWebcam::supported_resolutions
- /// \brief A hash table for easy lookup of resolutions the
hardware
- /// camera supports.
- GHashTable* supported_resolutions;
+ public:
+ /// \brief Accessor to retreive a the private _element variable
+ /// from the GnashWebcam class which contains a pointer
+ /// to the video source element.
+ ///
+ /// @return GstElement* to the video source element
+ GstElement* getElementPtr() {return _element;};
+
+ /// \brief Accessor to set the private _element variable from
+ /// the GnashWebcam class.
+ ///
+ /// @param element The GstElement pointer to the video source element.
+ void setElementPtr(GstElement* element) {_element = element;};
+
+ /// \brief Accessor to get the private _devLocation variable from
+ /// the GnashWebcam class.
+ ///
+ /// @return The _devLocation private variable from GnashWebcam class.
+ gchar* getDevLocation() {return _devLocation;};
+
+ /// \brief Accessor to set the private _devLocation variable from
+ /// the GnashWebcam class.
+ ///
+ /// @param l A gchar* containing the physical location of the video
+ /// input hardware device (e.g. on Linux typically would be set
+ /// to '/dev/video0').
+ void setDevLocation(gchar *l) {_devLocation = l;};
+
+ /// \brief Accessor to return the private _gstreamerSrc variable
+ /// from the GnashWebcam class.
+ ///
+ /// @return The _gstreamerSrc variable from the GnashWebcam class.
+ /// which should contain the type of the Gstreamer video source
+ /// element (e.g. v4lsrc, v4l2src).
+ gchar* getGstreamerSrc() {return _gstreamerSrc;};
+
+ /// \brief Accessor to set the private _gstreamerSrc variable
+ /// from the GnashWebcam class.
+ ///
+ /// @param s A gchar* containing the type of the Gstreamer source
+ /// element type (e.g. v4lsrc, v4l2src, etc)
+ void setGstreamerSrc(gchar *s) {_gstreamerSrc = s;};
+
+ /// \brief Accessor to get the private _productName variable
+ /// from the GnashWebcam class.
+ ///
+ /// @return A gchar* containing the video input's hardware name
+ /// (e.g. Built-In Webcam or Microsoft LifeCam VX500).
+ gchar* getProductName() {return _productName;};
+
+ /// \brief Accessor to set the private _productName variable
+ /// from the GnashWebcam class.
+ ///
+ /// @param n A gchar* to the hardware input device's hardware name
+ /// (e.g. Built-In Webcam or Microsoft LifeCam VX500).
+ void setProductName(gchar *n) {_productName = n;};
+
+ /// \var GnashWebcam::numVideoFormats
+ /// \brief Contains an integer value representing the number of
+ /// video formats the camera supports (used for iteration
+ /// purposes).
+ gint numVideoFormats;
+
+ /// \var GnashWebcam::videoFormats
+ /// \brief A GArray containing WebcamVidFormat data structures
+ /// (see WebcamVidFormat class documentation for more info).
+ GArray* videoFormats;
+
+ /// \var GnashWebcam::supportedResolutions
+ /// \brief A hash table for easy lookup of resolutions the hardware
+ /// camera supports.
+ GHashTable* supportedResolutions;
- /// Constructor for the GnashWebcam class.
- GnashWebcam();
-
- private:
- /// \var GnashWebcam::_element
- /// \brief GstElement* which points to the video source
- /// element.
- GstElement* _element;
-
- /// \var GnashWebcam::_dev_location
- /// \brief Contains the physical location of the webcam device
- /// (e.g. on Linux typically would be set to /dev/video0).
- gchar* _dev_location;
-
- /// \var GnashWebcam::_gstreamer_src
- /// \brief Contains a gchar* which describes the gstreamer
source
- /// type (e.g. v4lsrc or v4l2src).
- gchar* _gstreamer_src;
-
- /// \var GnashWebcam::_product_name
- /// \brief Contains a gchar* which describes the name of the
hardware
- /// device (e.g. Built-In Webcam or Microsoft LifeCam
VX500).
- gchar* _product_name;
+ /// Constructor for the GnashWebcam class.
+ GnashWebcam();
+
+ private:
+ /// \var GnashWebcam::_element
+ /// \brief GstElement* which points to the video source
+ /// element.
+ GstElement* _element;
+
+ /// \var GnashWebcam::_devLocation
+ /// \brief Contains the physical location of the webcam device
+ /// (e.g. on Linux typically would be set to /dev/video0).
+ gchar* _devLocation;
+
+ /// \var GnashWebcam::_gstreamerSrc
+ /// \brief Contains a gchar* which describes the gstreamer source
+ /// type (e.g. v4lsrc or v4l2src).
+ gchar* _gstreamerSrc;
+
+ /// \var GnashWebcam::_productName
+ /// \brief Contains a gchar* which describes the name of the hardware
+ /// device (e.g. Built-In Webcam or Microsoft LifeCam VX500).
+ gchar* _productName;
};
/// \class WebcamVidFormat
@@ -167,42 +167,42 @@
/// Class used to hold enumerated information about usable video formats.
///
class WebcamVidFormat {
- public:
- /// \var WebcamVidFormat::mimetype
- /// \brief Contains a gchar* which describes the raw video
input stream
- /// from the camera formated in a Gstreamer video format
- /// type (e.g. video/x-raw-rgb or video/x-raw-yuv).
- gchar *mimetype;
-
- /// \var WebcamVidFormat::width
- /// \brief Contains a gint value describing the width of the
selected
- /// format.
- gint width;
-
- /// \var WebcamVidFormat::height
- /// \brief Contains a gint value describing the height of the
selected
- /// format.
- gint height;
-
- /// \var WebcamVidFormat::num_framerates
- /// \brief Contains a gint value representing the number of
framerate
- /// values supported by the format described in the
mimetype var.
- gint num_framerates;
-
- /// \var WebcamVidFormat::framerates
- /// \brief Pointer to a FramerateFraction class which simply
holds a
- /// temporary framerate variable while trying to determine
the
- /// highest possible supported framerate for the format
described
- /// in the mimetype var.
- FramerateFraction *framerates;
-
- /// \var WebcamVidFormat::highest_framerate
- /// \brief Holds the highest_frame supported by the format
described
- /// in the mimetype var.
- FramerateFraction highest_framerate;
-
- /// Constructor for the WebcamVidFormat class
- WebcamVidFormat();
+ public:
+ /// \var WebcamVidFormat::mimetype
+ /// \brief Contains a gchar* which describes the raw video input stream
+ /// from the camera formated in a Gstreamer video format
+ /// type (e.g. video/x-raw-rgb or video/x-raw-yuv).
+ gchar *mimetype;
+
+ /// \var WebcamVidFormat::width
+ /// \brief Contains a gint value describing the width of the selected
+ /// format.
+ gint width;
+
+ /// \var WebcamVidFormat::height
+ /// \brief Contains a gint value describing the height of the selected
+ /// format.
+ gint height;
+
+ /// \var WebcamVidFormat::numFramerates
+ /// \brief Contains a gint value representing the number of framerate
+ /// values supported by the format described in the mimetype var.
+ gint numFramerates;
+
+ /// \var WebcamVidFormat::framerates
+ /// \brief Pointer to a FramerateFraction class which simply holds a
+ /// temporary framerate variable while trying to determine the
+ /// highest possible supported framerate for the format described
+ /// in the mimetype var.
+ FramerateFraction *framerates;
+
+ /// \var WebcamVidFormat::highestFramerate
+ /// \brief Holds the highest_frame supported by the format described
+ /// in the mimetype var.
+ FramerateFraction highestFramerate;
+
+ /// Constructor for the WebcamVidFormat class
+ WebcamVidFormat();
};
/// Constructor for the WebcamVidFormat class. This constructor prepares
@@ -210,36 +210,36 @@
/// are initialized to -1 to show that these values have never been set.
///
WebcamVidFormat::WebcamVidFormat() {
- width = -1;
- height = -1;
- num_framerates = -1;
- framerates = NULL;
+ width = -1;
+ height = -1;
+ numFramerates = -1;
+ framerates = NULL;
}
/// Default constructor for the FramerateFraction class. This constructor
prepares
/// the data structure for data that will come in later. All gint values
/// are initialized to -1 to show that these values have never been set.
FramerateFraction::FramerateFraction() {
- numerator = -1;
- denominator = -1;
+ numerator = -1;
+ denominator = -1;
}
/// Secondary constructor for the FramerateFraction class. This constructor
/// initialzes the structure with the numerator and denominator values passed
/// to the constructor.
FramerateFraction::FramerateFraction(gint num, gint denom) {
- numerator = num;
- denominator = denom;
+ numerator = num;
+ denominator = denom;
}
/// Constructor for the GnashWebcam class. This constructor prepares the data
/// structure for data that will come in later. Also creates a blank hash table
/// and array.
GnashWebcam::GnashWebcam() {
- set_element_ptr(NULL);
- supported_resolutions = g_hash_table_new_full (g_str_hash, g_str_equal,
g_free, NULL);
- video_formats = g_array_new (FALSE, FALSE, sizeof (WebcamVidFormat));
- num_video_formats = 0;
+ setElementPtr(NULL);
+ supportedResolutions = g_hash_table_new_full (g_str_hash, g_str_equal,
g_free, NULL);
+ videoFormats = g_array_new (FALSE, FALSE, sizeof (WebcamVidFormat));
+ numVideoFormats = 0;
}
/// \class GnashWebcamPrivate
@@ -250,174 +250,174 @@
///
class GnashWebcamPrivate
{
- public:
- /// Constructor for the GnashWebcamPrivate class.
- GnashWebcamPrivate();
-
- /// \brief Accessor to set the private _webcam_device variable
in the
- /// GnashWebcamPrivate class.
- ///
- /// @param d A pointer to a GnashWebcam class for the selected
input device.
- void set_webcam_device(GnashWebcam *d) {_webcam_device = d;}
-
- /// \brief Accessor to set the private _device_name variable in
the
- /// GnashWebcamPrivate class.
- ///
- /// @param n A gchar* describing the name of the hardware device
- /// (e.g. Built-In Webcam or Microsoft LifeCam VX500).
- void set_device_name(gchar *n) {_device_name = n;}
-
- //FIXME: this should eventually be a private or protected data field
- //protected:
-
- /// \var GnashWebcamPrivate::_pipeline
- ///
- /// \brief A pointer to the main Gstreamer pipeline that all
- /// created elements and bins will be dropped into.
- GstElement *_pipeline;
-
- /// \var GnashWebcamPrivate::_webcam_source_bin
- ///
- /// A pointer to the Gstreamer source bin. This variable is set
- /// inside of the make_webcam_source_bin() function. The
pipeline
- /// API of this source bin is written as follows:
- /// videosourcedevice ! capsfilter (ghostpad)
- GstElement *_webcam_source_bin;
-
- /// \var GnashWebcamPrivate::_webcam_main_bin
- ///
- /// A pointer to the Gstreamer main bin. This variable is set
- /// inside of the make_webcam_main_bin() function. The pipeline
- /// API of the main bin is written as follows:
- /// tee ! save_queue (ghostpad)
- ///
- /// tee ! display_queue (ghostpad)
- ///
- /// This basically creates two queues where video stream data
sits
- /// and can be attached (optionally) to a display_bin to show
the
- /// video onscreen or to a save_bin to mux-out the stream and
- /// save to a file on disk.
- GstElement *_webcam_main_bin;
-
- /// \var GnashWebcamPrivate::_video_display_bin
- ///
- /// A pointer to the Gstreamer display bin. This variable is set
- /// inside of the make_webcam_display_bin() function. The
pipeline
- /// API of the video_display_bin is written as follows:
- ///
- /// videoscale ! videosink
- ///
- /// This bin is dropped into the webcam_main_bin, but by default
- /// the connection to display_queue is not made. This means that
- /// even though the video_display_bin is created, it is not
linked
- /// and thus will not show video to the screen unless you call
the
- /// webcam_make_video_display_link() function.
- GstElement *_video_display_bin;
-
- /// \var GnashWebcamPrivate::_video_save_bin
- ///
- /// A pointer to the Gstreamer video_save_bin. This variable is
set
- /// inside of the make_webcam_save_bin() function. The pipeline
- /// API of the video_save_bin is written as follows:
- ///
- /// ffmpegcolorspace ! videorate ! videoscale ! theoraenc !
oggmux ! filesink
- ///
- /// This bin is dropped into the webcam_main_bin and is linked
automatically
- /// to the video_save_queue element in the webcam_main_bin
- /// Note: if you want to save the file in a different format,
simply
- /// link up video scale to a different encoder and muxer.
- GstElement *_video_save_bin;
-
- /// \var GnashWebcamPrivate::_video_source
- /// \brief Contains a direct link to the src pad in the video
source
- /// element. This is different from _webcam_source_bin in
that
- /// it points to the video source element INSIDE the bin,
not
- /// the source bin itself.
- GstElement *_video_source;
-
- /// \var GnashWebcamPrivate::_caps_filter
- /// \brief Contains a direct link to the src pad in the
capsfilter
- /// element.
- GstElement *_capsfilter;
-
- /// \var GnashWebcamPrivate:_video_file_sink
- /// \brief Contains a direct link to the video_file_sink element
- GstElement *_video_file_sink;
-
- /// \var GnashWebcamPrivate::_video_enc
- /// \brief Contains a direct link to the video encoder element
- GstElement *_video_enc;
-
- /// \var GnashWebcamPrivate::_pipeline_is_playing
- /// \brief Boolean value which is changed based on whether or
not
- /// the Gstreamer pipeline status is GST_STATE_PLAYING
(true)
- /// or GST_STATE_NULL (false), GST_STATE_READY (false),
- /// GST_STATE_PAUSED (false).
- gboolean _pipeline_is_playing;
-
- /// \var GnashWebcamPrivate::_device_name
- /// \brief Contains a string with the hardware device name
(transferred
- /// from GnashWebcam class
- gchar *_device_name;
-
- /// \var GnashWebcamPrivate::_webcam_device
- /// \brief Contains a pointer to the original GnashWebcam class
- /// that was created when enumerating and probing attached
- /// hardware.
- GnashWebcam *_webcam_device;
-
- /// \var GnashWebcamPrivate::_x_resolution
- /// \brief Contains the integer x_resolution variable (the first
- /// value when resolution is written as INTxINT)
- gint _x_resolution;
-
- /// \var GnashWebcamPrivate::_y_resolution
- /// \brief Contains the integer y_resolution variable (the
second
- /// value when resolution is written as INTxINT)
- gint _y_resolution;
-
- /// \var GnashWebcamPrivate::_current_format
- /// \brief Contains a pointer to the WebcamVidFormat data
structure
- /// selected to be used with this pipeline.
- WebcamVidFormat *_current_format;
-
- /// \var GnashWebcamPrivate::_loop
- /// \brief Contains a pointer to a GMainLoop which runs to keep
- /// Gstreamer capturing information from the raw data
- /// stream coming in from the hardware input device.
- GMainLoop *_loop;
-
- /// \var GnashWebcamPrivate::_eos_timeout_id
- /// \brief This variable is not currently used, but will
eventually
- /// be used as a timeout when networking encapsulation is
being
- /// used.
- guint _eos_timeout_id;
+ public:
+ /// Constructor for the GnashWebcamPrivate class.
+ GnashWebcamPrivate();
+
+ /// \brief Accessor to set the private _webcamDevice variable in the
+ /// GnashWebcamPrivate class.
+ ///
+ /// @param d A pointer to a GnashWebcam class for the selected input
device.
+ void setWebcamDevice(GnashWebcam *d) {_webcamDevice = d;}
+
+ /// \brief Accessor to set the private _deviceName variable in the
+ /// GnashWebcamPrivate class.
+ ///
+ /// @param n A gchar* describing the name of the hardware device
+ /// (e.g. Built-In Webcam or Microsoft LifeCam VX500).
+ void setDeviceName(gchar *n) {_deviceName = n;}
+
+ //FIXME: this should eventually be a private or protected data field
+ //protected:
+
+ /// \var GnashWebcamPrivate::_pipeline
+ ///
+ /// \brief A pointer to the main Gstreamer pipeline that all
+ /// created elements and bins will be dropped into.
+ GstElement *_pipeline;
+
+ /// \var GnashWebcamPrivate::_webcamSourceBin
+ ///
+ /// A pointer to the Gstreamer source bin. This variable is set
+ /// inside of the make_webcamSourceBin() function. The pipeline
+ /// API of this source bin is written as follows:
+ /// videosourcedevice ! capsfilter (ghostpad)
+ GstElement *_webcamSourceBin;
+
+ /// \var GnashWebcamPrivate::_webcamMainBin
+ ///
+ /// A pointer to the Gstreamer main bin. This variable is set
+ /// inside of the make_webcamMainBin() function. The pipeline
+ /// API of the main bin is written as follows:
+ /// tee ! save_queue (ghostpad)
+ ///
+ /// tee ! display_queue (ghostpad)
+ ///
+ /// This basically creates two queues where video stream data sits
+ /// and can be attached (optionally) to a display_bin to show the
+ /// video onscreen or to a save_bin to mux-out the stream and
+ /// save to a file on disk.
+ GstElement *_webcamMainBin;
+
+ /// \var GnashWebcamPrivate::_videoDisplayBin
+ ///
+ /// A pointer to the Gstreamer display bin. This variable is set
+ /// inside of the make_webcam_display_bin() function. The pipeline
+ /// API of the video_display_bin is written as follows:
+ ///
+ /// videoscale ! videosink
+ ///
+ /// This bin is dropped into the webcam_main_bin, but by default
+ /// the connection to display_queue is not made. This means that
+ /// even though the video_display_bin is created, it is not linked
+ /// and thus will not show video to the screen unless you call the
+ /// webcamMakeVideoDisplayLink() function.
+ GstElement *_videoDisplayBin;
+
+ /// \var GnashWebcamPrivate::_videoSaveBin
+ ///
+ /// A pointer to the Gstreamer video_save_bin. This variable is set
+ /// inside of the make_webcam_save_bin() function. The pipeline
+ /// API of the video_save_bin is written as follows:
+ ///
+ /// ffmpegcolorspace ! videorate ! videoscale ! theoraenc ! oggmux !
filesink
+ ///
+ /// This bin is dropped into the webcam_main_bin and is linked
automatically
+ /// to the video_save_queue element in the webcam_main_bin
+ /// Note: if you want to save the file in a different format, simply
+ /// link up video scale to a different encoder and muxer.
+ GstElement *_videoSaveBin;
+
+ /// \var GnashWebcamPrivate::_videoSource
+ /// \brief Contains a direct link to the src pad in the video source
+ /// element. This is different from _webcamSourceBin in that
+ /// it points to the video source element INSIDE the bin, not
+ /// the source bin itself.
+ GstElement *_videoSource;
+
+ /// \var GnashWebcamPrivate::_capsFilter
+ /// \brief Contains a direct link to the src pad in the capsfilter
+ /// element.
+ GstElement *_capsFilter;
+
+ /// \var GnashWebcamPrivate:_videoFileSink
+ /// \brief Contains a direct link to the video_file_sink element
+ GstElement *_videoFileSink;
+
+ /// \var GnashWebcamPrivate::_videoEnc
+ /// \brief Contains a direct link to the video encoder element
+ GstElement *_videoEnc;
+
+ /// \var GnashWebcamPrivate::_pipelineIsPlaying
+ /// \brief Boolean value which is changed based on whether or not
+ /// the Gstreamer pipeline status is GST_STATE_PLAYING (true)
+ /// or GST_STATE_NULL (false), GST_STATE_READY (false),
+ /// GST_STATE_PAUSED (false).
+ gboolean _pipelineIsPlaying;
+
+ /// \var GnashWebcamPrivate::_deviceName
+ /// \brief Contains a string with the hardware device name (transferred
+ /// from GnashWebcam class
+ gchar *_deviceName;
+
+ /// \var GnashWebcamPrivate::_webcamDevice
+ /// \brief Contains a pointer to the original GnashWebcam class
+ /// that was created when enumerating and probing attached
+ /// hardware.
+ GnashWebcam *_webcamDevice;
+
+ /// \var GnashWebcamPrivate::_xResolution
+ /// \brief Contains the integer x_resolution variable (the first
+ /// value when resolution is written as INTxINT)
+ gint _xResolution;
+
+ /// \var GnashWebcamPrivate::_yResolution
+ /// \brief Contains the integer y_resolution variable (the second
+ /// value when resolution is written as INTxINT)
+ gint _yResolution;
+
+ /// \var GnashWebcamPrivate::_currentFormat
+ /// \brief Contains a pointer to the WebcamVidFormat data structure
+ /// selected to be used with this pipeline.
+ WebcamVidFormat *_currentFormat;
+
+ /// \var GnashWebcamPrivate::_loop
+ /// \brief Contains a pointer to a GMainLoop which runs to keep
+ /// Gstreamer capturing information from the raw data
+ /// stream coming in from the hardware input device.
+ GMainLoop *_loop;
+
+ /// \var GnashWebcamPrivate::_eosTimeoutId
+ /// \brief This variable is not currently used, but will eventually
+ /// be used as a timeout when networking encapsulation is being
+ /// used.
+ guint _eosTimeoutId;
};
/// Constructor that initializes all GnashWebcamPrivate variables to have
/// data dropped in later.
GnashWebcamPrivate::GnashWebcamPrivate() {
- _pipeline = NULL;
- _webcam_source_bin = NULL;
- _webcam_main_bin = NULL;
- _video_display_bin = NULL;
- _video_save_bin = NULL;
- _video_source = NULL;
- _capsfilter = NULL;
- _video_file_sink = NULL;
- _video_enc = NULL;
-
- _loop = g_main_loop_new(NULL, false);
-
- _pipeline_is_playing = false;
-
- //FIXME: the resolution here should be able to either
- //a. be determined by the user (or)
- //b. be determined by network latency/bandwidth availability
- _x_resolution = 320;
- _y_resolution = 240;
- _current_format = NULL;
- _eos_timeout_id = 0;
+ _pipeline = NULL;
+ _webcamSourceBin = NULL;
+ _webcamMainBin = NULL;
+ _videoDisplayBin = NULL;
+ _videoSaveBin = NULL;
+ _videoSource = NULL;
+ _capsFilter = NULL;
+ _videoFileSink = NULL;
+ _videoEnc = NULL;
+
+ _loop = g_main_loop_new(NULL, false);
+
+ _pipelineIsPlaying = false;
+
+ //FIXME: the resolution here should be able to either
+ //a. be determined by the user (or)
+ //b. be determined by network latency/bandwidth availability
+ _xResolution = 320;
+ _yResolution = 240;
+ _currentFormat = NULL;
+ _eosTimeoutId = 0;
};
/// \class VideoInputGst
@@ -428,209 +428,209 @@
///
class VideoInputGst : public VideoInput, public GnashWebcamPrivate {
public:
- /// Constructor for the VideoInputGst class
- VideoInputGst();
-
- /// Destructor for the VideoInputGst class
- ~VideoInputGst();
-
- /// \brief This function interacts with the hardware on the machine
- /// to enumerate information about devices connected. Currently
- /// this function only looks for videotestsources (implemented
- /// in Gstreamer), video4linux and video4linux2 sources.
- /// @return Nothing. All pertantent information is now stored in a
- /// GnashWebcam class.
- void find_vid_devs();
-
- /// \brief This function is important in the flow of the code. It looks
- /// in the gnashrc file to see if you have a default camera
defined
- /// and selects that one (if it's defined), otherwise a
videotestsrc
- /// will be used for the remainder of the execution of the code.
- /// Currently this code also calls other functions to make bins
and
- /// pipelines. It might be abstracted into separate functions
later.
- /// @return Nothing.
- void make_webcamDevice_selection();
-
- /// \brief This function makes a temporary pipeline with the selected
device
- /// to determine its capabilities (Gstreamer calls these caps).
This
- /// information is saved in a GnashWebcamPrivate class and will be
- /// used when enumerating additional information about the camera
and
- /// in creating the real pipeline to capture video.
- ///
- /// @param dev_select The integer value of the camera the user wants to
select.
- /// This might be changed to the name of the camera,
but it's
- /// currently an integer (if it changes, we need to
change the
- /// gnashrc element). If this value
is 0, you've selected a
- /// videotestsrc.
- ///
- /// @return Nothing. All pertantent information is stored in a
GnashWebcam class.
- void get_selected_caps(gint dev_select);
-
- /// \brief This function is called by get_selected caps to determine
what
- /// formats the input device can handle. It saves all the
information
- /// it finds into an array of WebcamVidFormat pointers. This
information
- /// will then be analyzed and actually added as a supported
format in
- /// a call to add_supported_format.
- ///
- /// @param cam A pointer to the GnashWebcam structure you want to use
as input.
- /// @param caps A pointer to the capabilities discovered in the
get_selected_caps() function.
- ///
- /// @return Nothing. All pertantent information is stored in a
GnashWebcam class.
- void get_supported_formats(GnashWebcam *cam, GstCaps *caps);
-
- /// \brief This function is called by get_supported_formats when it has
- /// determined that the format being analyzed can be used to
capture
- /// information from the hardware device.
- ///
- /// @param cam A pointer to the GnashWebcam structure you want to use
as input.
- /// @param video_format A pointer to a WebcamVidFormat class that has
had all
- /// variables initialize to their respective values.
- ///
- /// @return Nothing. All pertantent information is stored in a
GnashWebcam class.
- void add_supported_format(GnashWebcam *cam, WebcamVidFormat
*video_format,
- GstStructure *format_structure);
-
- /// \brief This function is called by add_supported_format. Since we
have found
- /// a format that will work with the input device, we now need to
figure
- /// out what framerate the camera can capture at that corresponds
with the
- /// format being analyzed.
- ///
- /// @param video_format A pointer to a WebcamVidFormat class taht has
had all
- /// variables initialized to their respective values.
- /// @param structure A pointer to a structure initialized with the
capabilities
- /// of the selected input device.
- ///
- /// @return Nothing. All pertantent information is stored in a
WebcamVidFormat class.
- void get_supported_framerates(WebcamVidFormat *video_format,
GstStructure *structure);
-
- /// \brief This function runs through the list of framerates determined
by
- /// get_supported_framerates() and finds the highest supported
framerate
- /// less than 30fps.
- ///
- /// @param format A pointer to the chosen format structure.
- ///
- /// @return Nothing. All pertantent information is stored in the
structure
- /// passed in (a WebcamVidFormat class).
- void find_highest_framerate(WebcamVidFormat *format);
-
- /// \brief Function is called when all the information has been
enumerated
- /// that can be stored in the GnashWebcam structure. Now transfer
the
- /// important information from the GnashWebcam structure to the
- /// GnashWebcamPrivate structure which is larger because it has
- /// space to store Gstreamer pipeline, element and bin elements.
- /// See definition of GnashWebcamPrivate for more info.
- ///
- /// @param dev_select The integer value of the camera the user wants to
select.
- /// This might be changed to the name of the camera,
but it's
- /// currently an integer (if it changes, we need to
change the
- /// gnashrc element). If this value
is 0, you've selected a
- /// videotestsrc.
- ///
- /// @return A pointer to the newly created GnashWebcamPrivate structure.
- GnashWebcamPrivate* transfer_to_private(gint dev_select);
-
- /// \brief Function creates the source bin. For more information on
pipeline
- /// implementation and this function in general see the definition
of
- /// the _webcam_source_bin variable in the GnashWebcamPrivate
structure
- /// documentation.
- ///
- /// @param webcam A pointer to the GnashWebcamPrivate webcam structure
- /// created previously in a call to transfer_to_private()
- ///
- /// @return True if everything went correctly (making elements, dropping
- /// into bins and linking elements), false otherwise.
- gboolean webcam_create_source_bin(GnashWebcamPrivate *webcam);
-
- /// \brief Function creates the main bin. For more information on
pipeline
- /// implementation and this function in general see the
definition of
- /// the _webcam_main_bin variable in the GnashWebcamPrivate
structure
- /// documentation.
- ///
- /// @param webcam A pointer to the GnashWebcamPrivate webcam structure
- /// created previously in a call to transfer_to_private()
- ///
- /// @return True if everything went correctly (making elements, dropping
- /// into bins and linking elements), false otherwise.
- gboolean webcam_create_main_bin(GnashWebcamPrivate *webcam);
-
- /// \brief Function creates the display bin. For more information on
pipeline
- /// implementation and this function in general see the
definition of
- /// the _video_display_bin variable in the GnashWebcamPrivate
structure
- /// documentation.
- ///
- /// @param webcam A pointer to the GnashWebcamPrivate webcam structure
- /// created previously in a call to transfer_to_private()
- ///
- /// @return True if everything went correctly (making elements, dropping
- /// into bins and linking elements), false otherwise.
- gboolean webcam_create_display_bin(GnashWebcamPrivate *webcam);
-
- /// \brief Function links the video_display_bin to the
video_display_queue
- /// in the main bin.
- ///
- /// @param webcam A pointer to the GnashWebcamPrivate webcam structure
- /// created previously in a call to transfer_to_private()
- ///
- /// @return True if the link to the video_display_queue was successful,
- /// False otherwise.
- gboolean webcam_make_video_display_link(GnashWebcamPrivate *webcam);
-
- /// \brief Function creates the save bin. For more information on
pipeline
- /// implementation and this function in general see the
definition of
- /// the _webcam_save_bin variable in the GnashWebcamPrivate
structure
- /// documentation.
- ///
- /// @param webcam A pointer to the GnashWebcamPrivate webcam structure
- /// created previously in a call to transfer_to_private()
- ///
- /// @return True if everything went correctly (making elements, dropping
- /// into bins and linking elements), false otherwis
- gboolean webcam_create_save_bin(GnashWebcamPrivate *webcam);
-
- /// \brief Function starts up the pipeline designed earlier in code
- /// execution. This puts everything into motion.
- ///
- /// @param webcam A pointer to the GnashWebcamPrivate webcam structure
- /// created previously in a call to transfer_to_private()
- ///
- void webcam_play(GnashWebcamPrivate *webcam);
-
- /// \brief Accessor which returns the vid_vect private variable in the
- /// VideoInputGst class.
- ///
- /// @return A pointer to a vector of GnashWebcam pointers.
- std::vector<GnashWebcam*>* get_vid_vect() {return &_vid_vect;}
-
- /// \brief Accessor which sets the number of devices in the vid_vect
- ///
- /// @param i The integer value representing the number of devices
attached
- /// to the machine.
- void set_numdevs(int i) {_numdevs = i;}
-
- /// \brief Accessor which returns the number of video devices attached
- /// to the machine (useful in accessing the vid_vect vector).
- ///
- /// @return The _numdev variable in the VideoInputGst class.
- int get_numdevs() {return _numdevs;}
-
- /// \brief Accessor which increments the number of video devices
- /// attached to the machine.
- void increment_numdevs() {_numdevs += 1;}
-
+ /// Constructor for the VideoInputGst class
+ VideoInputGst();
+
+ /// Destructor for the VideoInputGst class
+ ~VideoInputGst();
+
+ /// \brief This function interacts with the hardware on the machine
+ /// to enumerate information about devices connected. Currently
+ /// this function only looks for videotestsources (implemented
+ /// in Gstreamer), video4linux and video4linux2 sources.
+ /// @return Nothing. All pertantent information is now stored in a
+ /// GnashWebcam class.
+ void findVidDevs();
+
+ /// \brief This function is important in the flow of the code. It looks
+ /// in the gnashrc file to see if you have a default camera defined
+ /// and selects that one (if it's defined), otherwise a videotestsrc
+ /// will be used for the remainder of the execution of the code.
+ /// Currently this code also calls other functions to make bins and
+ /// pipelines. It might be abstracted into separate functions later.
+ /// @return Nothing.
+ void makeWebcamDeviceSelection();
+
+ /// \brief This function makes a temporary pipeline with the selected
device
+ /// to determine its capabilities (Gstreamer calls these caps). This
+ /// information is saved in a GnashWebcamPrivate class and will be
+ /// used when enumerating additional information about the camera and
+ /// in creating the real pipeline to capture video.
+ ///
+ /// @param dev_select The integer value of the camera the user wants to
select.
+ /// This might be changed to the name of the camera, but
it's
+ /// currently an integer (if it changes, we need to change
the
+ /// gnashrc element). If this value is 0, you've selected a
+ /// videotestsrc.
+ ///
+ /// @return Nothing. All pertantent information is stored in a GnashWebcam
class.
+ void getSelectedCaps(gint dev_select);
+
+ /// \brief This function is called by get_selected caps to determine what
+ /// formats the input device can handle. It saves all the information
+ /// it finds into an array of WebcamVidFormat pointers. This
information
+ /// will then be analyzed and actually added as a supported format
in
+ /// a call to addSupportedFormat.
+ ///
+ /// @param cam A pointer to the GnashWebcam structure you want to use as
input.
+ /// @param caps A pointer to the capabilities discovered in the
getSelectedCaps() function.
+ ///
+ /// @return Nothing. All pertantent information is stored in a GnashWebcam
class.
+ void getSupportedFormats(GnashWebcam *cam, GstCaps *caps);
+
+ /// \brief This function is called by getSupportedFormats when it has
+ /// determined that the format being analyzed can be used to capture
+ /// information from the hardware device.
+ ///
+ /// @param cam A pointer to the GnashWebcam structure you want to use as
input.
+ /// @param video_format A pointer to a WebcamVidFormat class that has had
all
+ /// variables initialize to their respective values.
+ ///
+ /// @return Nothing. All pertantent information is stored in a GnashWebcam
class.
+ void addSupportedFormat(GnashWebcam *cam, WebcamVidFormat *video_format,
+ GstStructure *format_structure);
+
+ /// \brief This function is called by addSupportedFormat. Since we have
found
+ /// a format that will work with the input device, we now need to
figure
+ /// out what framerate the camera can capture at that corresponds
with the
+ /// format being analyzed.
+ ///
+ /// @param video_format A pointer to a WebcamVidFormat class taht has had
all
+ /// variables initialized to their respective values.
+ /// @param structure A pointer to a structure initialized with the
capabilities
+ /// of the selected input device.
+ ///
+ /// @return Nothing. All pertantent information is stored in a
WebcamVidFormat class.
+ void getSupportedFramerates(WebcamVidFormat *video_format, GstStructure
*structure);
+
+ /// \brief This function runs through the list of framerates determined by
+ /// getSupportedFramerates() and finds the highest supported
framerate
+ /// less than 30fps.
+ ///
+ /// @param format A pointer to the chosen format structure.
+ ///
+ /// @return Nothing. All pertantent information is stored in the structure
+ /// passed in (a WebcamVidFormat class).
+ void findHighestFramerate(WebcamVidFormat *format);
+
+ /// \brief Function is called when all the information has been enumerated
+ /// that can be stored in the GnashWebcam structure. Now transfer the
+ /// important information from the GnashWebcam structure to the
+ /// GnashWebcamPrivate structure which is larger because it has
+ /// space to store Gstreamer pipeline, element and bin elements.
+ /// See definition of GnashWebcamPrivate for more info.
+ ///
+ /// @param dev_select The integer value of the camera the user wants to
select.
+ /// This might be changed to the name of the camera, but
it's
+ /// currently an integer (if it changes, we need to change
the
+ /// gnashrc element). If this value is 0, you've selected a
+ /// videotestsrc.
+ ///
+ /// @return A pointer to the newly created GnashWebcamPrivate structure.
+ GnashWebcamPrivate* transferToPrivate(gint dev_select);
+
+ /// \brief Function creates the source bin. For more information on
pipeline
+ /// implementation and this function in general see the definition of
+ /// the _webcamSourceBin variable in the GnashWebcamPrivate structure
+ /// documentation.
+ ///
+ /// @param webcam A pointer to the GnashWebcamPrivate webcam structure
+ /// created previously in a call to transferToPrivate()
+ ///
+ /// @return True if everything went correctly (making elements, dropping
+ /// into bins and linking elements), false otherwise.
+ gboolean webcamCreateSourceBin(GnashWebcamPrivate *webcam);
+
+ /// \brief Function creates the main bin. For more information on pipeline
+ /// implementation and this function in general see the definition of
+ /// the _webcamMainBin variable in the GnashWebcamPrivate structure
+ /// documentation.
+ ///
+ /// @param webcam A pointer to the GnashWebcamPrivate webcam structure
+ /// created previously in a call to transferToPrivate()
+ ///
+ /// @return True if everything went correctly (making elements, dropping
+ /// into bins and linking elements), false otherwise.
+ gboolean webcamCreateMainBin(GnashWebcamPrivate *webcam);
+
+ /// \brief Function creates the display bin. For more information on
pipeline
+ /// implementation and this function in general see the definition of
+ /// the _videoDisplayBin variable in the GnashWebcamPrivate structure
+ /// documentation.
+ ///
+ /// @param webcam A pointer to the GnashWebcamPrivate webcam structure
+ /// created previously in a call to transferToPrivate()
+ ///
+ /// @return True if everything went correctly (making elements, dropping
+ /// into bins and linking elements), false otherwise.
+ gboolean webcamCreateDisplayBin(GnashWebcamPrivate *webcam);
+
+ /// \brief Function links the video_display_bin to the video_display_queue
+ /// in the main bin.
+ ///
+ /// @param webcam A pointer to the GnashWebcamPrivate webcam structure
+ /// created previously in a call to transferToPrivate()
+ ///
+ /// @return True if the link to the video_display_queue was successful,
+ /// False otherwise.
+ gboolean webcamMakeVideoDisplayLink(GnashWebcamPrivate *webcam);
+
+ /// \brief Function creates the save bin. For more information on pipeline
+ /// implementation and this function in general see the definition of
+ /// the _webcam_save_bin variable in the GnashWebcamPrivate structure
+ /// documentation.
+ ///
+ /// @param webcam A pointer to the GnashWebcamPrivate webcam structure
+ /// created previously in a call to transferToPrivate()
+ ///
+ /// @return True if everything went correctly (making elements, dropping
+ /// into bins and linking elements), false otherwis
+ gboolean webcamCreateSaveBin(GnashWebcamPrivate *webcam);
+
+ /// \brief Function starts up the pipeline designed earlier in code
+ /// execution. This puts everything into motion.
+ ///
+ /// @param webcam A pointer to the GnashWebcamPrivate webcam structure
+ /// created previously in a call to transferToPrivate()
+ ///
+ void webcamPlay(GnashWebcamPrivate *webcam);
+
+ /// \brief Accessor which returns the vid_vect private variable in the
+ /// VideoInputGst class.
+ ///
+ /// @return A pointer to a vector of GnashWebcam pointers.
+ std::vector<GnashWebcam*>* getVidVect() {return &_vidVect;}
+
+ /// \brief Accessor which sets the number of devices in the vid_vect
+ ///
+ /// @param i The integer value representing the number of devices attached
+ /// to the machine.
+ void setNumdevs(int i) {_numdevs = i;}
+
+ /// \brief Accessor which returns the number of video devices attached
+ /// to the machine (useful in accessing the vid_vect vector).
+ ///
+ /// @return The _numdev variable in the VideoInputGst class.
+ int getNumdevs() {return _numdevs;}
+
+ /// \brief Accessor which increments the number of video devices
+ /// attached to the machine.
+ void incrementNumdevs() {_numdevs += 1;}
+
private:
- /// \var VideoInputGst::_vid_vect
- /// \brief A vector containing pointers to GnashWebcam classes.
- std::vector<GnashWebcam*> _vid_vect;
-
- /// \var VideoInputGst::_numdevs
- /// \brief An integer value containing the number of devices attached
- /// to the machine.
- gint _numdevs;
-
- /// \var VideoInputGst::_global_webcam
- /// \brief Convienient pointer to the selected device's
GnashWebcamPrivate
- /// class structure.
- GnashWebcamPrivate *_global_webcam;
+ /// \var VideoInputGst::_vidVect
+ /// \brief A vector containing pointers to GnashWebcam classes.
+ std::vector<GnashWebcam*> _vidVect;
+
+ /// \var VideoInputGst::_numdevs
+ /// \brief An integer value containing the number of devices attached
+ /// to the machine.
+ gint _numdevs;
+
+ /// \var VideoInputGst::_globalWebcam
+ /// \brief Convienient pointer to the selected device's GnashWebcamPrivate
+ /// class structure.
+ GnashWebcamPrivate *_globalWebcam;
};
} //gst namespace
=== modified file 'utilities/findwebcams.cpp'
--- a/utilities/findwebcams.cpp 2009-07-17 20:00:12 +0000
+++ b/utilities/findwebcams.cpp 2009-07-17 21:38:26 +0000
@@ -26,151 +26,151 @@
#include <vector>
namespace {
- //get rc file for webcam selection
- gnash::RcInitFile& rcfile = gnash::RcInitFile::getDefaultInstance();
+ //get rc file for webcam selection
+ gnash::RcInitFile& rcfile = gnash::RcInitFile::getDefaultInstance();
}
class data {
- public:
- data();
- gchar* deviceName;
- gchar* deviceType;
+ public:
+ data();
+ gchar* deviceName;
+ gchar* deviceType;
};
data::data() {
- deviceName = NULL;
- deviceType = NULL;
+ deviceName = NULL;
+ deviceType = NULL;
};
gint findVidDevs(std::vector<data*>& vidVect) {
- gint numdevs = 0;
-
- //vid test source
- GstElement *element;
- element = gst_element_factory_make ("videotestsrc", "vidtestsrc");
-
- if (element == NULL) {
- vidVect.push_back(NULL);
- numdevs += 1;
- } else {
- vidVect.push_back(new data);
- vidVect[numdevs]->deviceName = g_strdup_printf("videotestsrc");
- vidVect[numdevs]->deviceType = g_strdup_printf("videotestsrc");
- numdevs += 1;
- }
-
- //video4linux source
- GstPropertyProbe *probe;
- GValueArray *devarr;
- element = NULL;
- gint i;
-
- element = gst_element_factory_make ("v4lsrc", "v4lvidsrc");
- probe = GST_PROPERTY_PROBE (element);
- devarr = gst_property_probe_probe_and_get_values_name (probe, "device");
- for (i = 0; devarr != NULL && i < devarr->n_values; ++i) {
- GValue *val;
- gchar *dev_name = NULL;
-
- val = g_value_array_get_nth (devarr, i);
- g_object_set (element, "device", g_value_get_string (val),
NULL);
- gst_element_set_state (element, GST_STATE_PLAYING);
- g_object_get (element, "device-name", &dev_name, NULL);
- gst_element_set_state (element, GST_STATE_NULL);
- if (dev_name == "null") {
- g_print("no v4l video sources found\n");
- }
- else {
- vidVect.push_back(new data);
- vidVect[numdevs]->deviceType =
g_strdup_printf("v4lsrc");
- vidVect[numdevs]->deviceName = dev_name;
- numdevs += 1;
- }
- }
- if (devarr) {
- g_value_array_free (devarr);
- }
-
-
- //video4linux2 source
- probe = NULL;
- element = NULL;
- devarr = NULL;
-
- element = gst_element_factory_make ("v4l2src", "v4l2vidsrc");
- probe = GST_PROPERTY_PROBE (element);
- devarr = gst_property_probe_probe_and_get_values_name (probe, "device");
- for (i = 0; devarr != NULL && i < devarr->n_values; ++i) {
- GValue *val;
- gchar *dev_name = NULL;
-
- val = g_value_array_get_nth (devarr, i);
- g_object_set (element, "device", g_value_get_string (val),
NULL);
- gst_element_set_state (element, GST_STATE_PLAYING);
- g_object_get (element, "device-name", &dev_name, NULL);
- gst_element_set_state (element, GST_STATE_NULL);
- if (dev_name == "null") {
- g_print("no v4l2 video sources found.\n");
- }
- else {
- vidVect.push_back(new data);
- vidVect[numdevs]->deviceType =
g_strdup_printf("v4l2src");
- vidVect[numdevs]->deviceName = dev_name;
-
- numdevs += 1;
- }
- }
- if (devarr) {
- g_value_array_free (devarr);
- }
-
- return numdevs;
+ gint numdevs = 0;
+
+ //vid test source
+ GstElement *element;
+ element = gst_element_factory_make ("videotestsrc", "vidtestsrc");
+
+ if (element == NULL) {
+ vidVect.push_back(NULL);
+ numdevs += 1;
+ } else {
+ vidVect.push_back(new data);
+ vidVect[numdevs]->deviceName = g_strdup_printf("videotestsrc");
+ vidVect[numdevs]->deviceType = g_strdup_printf("videotestsrc");
+ numdevs += 1;
+ }
+
+ //video4linux source
+ GstPropertyProbe *probe;
+ GValueArray *devarr;
+ element = NULL;
+ gint i;
+
+ element = gst_element_factory_make ("v4lsrc", "v4lvidsrc");
+ probe = GST_PROPERTY_PROBE (element);
+ devarr = gst_property_probe_probe_and_get_values_name (probe, "device");
+ for (i = 0; devarr != NULL && i < devarr->n_values; ++i) {
+ GValue *val;
+ gchar *dev_name = NULL;
+
+ val = g_value_array_get_nth (devarr, i);
+ g_object_set (element, "device", g_value_get_string (val), NULL);
+ gst_element_set_state (element, GST_STATE_PLAYING);
+ g_object_get (element, "device-name", &dev_name, NULL);
+ gst_element_set_state (element, GST_STATE_NULL);
+ if (dev_name == "null") {
+ g_print("no v4l video sources found\n");
+ }
+ else {
+ vidVect.push_back(new data);
+ vidVect[numdevs]->deviceType = g_strdup_printf("v4lsrc");
+ vidVect[numdevs]->deviceName = dev_name;
+ numdevs += 1;
+ }
+ }
+ if (devarr) {
+ g_value_array_free (devarr);
+ }
+
+
+ //video4linux2 source
+ probe = NULL;
+ element = NULL;
+ devarr = NULL;
+
+ element = gst_element_factory_make ("v4l2src", "v4l2vidsrc");
+ probe = GST_PROPERTY_PROBE (element);
+ devarr = gst_property_probe_probe_and_get_values_name (probe, "device");
+ for (i = 0; devarr != NULL && i < devarr->n_values; ++i) {
+ GValue *val;
+ gchar *dev_name = NULL;
+
+ val = g_value_array_get_nth (devarr, i);
+ g_object_set (element, "device", g_value_get_string (val), NULL);
+ gst_element_set_state (element, GST_STATE_PLAYING);
+ g_object_get (element, "device-name", &dev_name, NULL);
+ gst_element_set_state (element, GST_STATE_NULL);
+ if (dev_name == "null") {
+ g_print("no v4l2 video sources found.\n");
+ }
+ else {
+ vidVect.push_back(new data);
+ vidVect[numdevs]->deviceType = g_strdup_printf("v4l2src");
+ vidVect[numdevs]->deviceName = dev_name;
+
+ numdevs += 1;
+ }
+ }
+ if (devarr) {
+ g_value_array_free (devarr);
+ }
+
+ return numdevs;
}
int main () {
- //initialize gstreamer to probe for devs
- gst_init(NULL, NULL);
- gint numdevs = 0;
- std::vector<data*> vidVector;
- gint i;
-
- int fromrc = rcfile.getWebcamDevice();
-
- if (fromrc == -1) {
- g_print("Use this utility to set your desired default webcam
device.\n");
- numdevs = findVidDevs(vidVector);
- g_print("\nFound %d video devices: \n\n", numdevs);
- for (i = 0; i < numdevs; ++i)
- {
- if (i == 0 && (vidVector[i] != 0)) {
- g_print("%d. device[%d] = Video Test Source
(videotestsrc)\n", i, i);
- } else if (i == 0 && (vidVector[i] == 0)) {
- g_print("no test video device available");
- } else {
- g_print("%d. device[%d] = %s (%s)\n", i, i,
vidVector[i]->deviceName,
- vidVector[i]->deviceType);
- }
- }
- //prompt user for device selection
- int dev_select = -1;
- do {
- dev_select = -1;
- g_print("\nChoose the device you would like to use
(0-%d): ",
- (numdevs - 1));
- std::cin >> dev_select;
- if ((dev_select < 0) || (dev_select > (numdevs - 1))) {
- g_print("You must make a valid device
selection\n");
- }
- } while ((dev_select < 0) || (dev_select > (numdevs - 1)));
- g_print("\nTo select this camera, add this line to your gnashrc
file:\n");
- g_print("set webcamDevice %d\n", dev_select);
- } else {
- numdevs = findVidDevs(vidVector);
- g_print("\nThe gnashrc file reports default webcam is set
to:\n");
- g_print("%s (%s)\n", vidVector[fromrc]->deviceName,
- vidVector[fromrc]->deviceType);
- g_print("To change this setting, delete the 'set webcamDevice'
line\n");
- g_print("from your gnashrc file and re-run this program.\n\n");
- }
- return 1;
+ //initialize gstreamer to probe for devs
+ gst_init(NULL, NULL);
+ gint numdevs = 0;
+ std::vector<data*> vidVector;
+ gint i;
+
+ int fromrc = rcfile.getWebcamDevice();
+
+ if (fromrc == -1) {
+ g_print("Use this utility to set your desired default webcam
device.\n");
+ numdevs = findVidDevs(vidVector);
+ g_print("\nFound %d video devices: \n\n", numdevs);
+ for (i = 0; i < numdevs; ++i)
+ {
+ if (i == 0 && (vidVector[i] != 0)) {
+ g_print("%d. device[%d] = Video Test Source (videotestsrc)\n",
i, i);
+ } else if (i == 0 && (vidVector[i] == 0)) {
+ g_print("no test video device available");
+ } else {
+ g_print("%d. device[%d] = %s (%s)\n", i, i,
vidVector[i]->deviceName,
+ vidVector[i]->deviceType);
+ }
+ }
+ //prompt user for device selection
+ int dev_select = -1;
+ do {
+ dev_select = -1;
+ g_print("\nChoose the device you would like to use (0-%d): ",
+ (numdevs - 1));
+ std::cin >> dev_select;
+ if ((dev_select < 0) || (dev_select > (numdevs - 1))) {
+ g_print("You must make a valid device selection\n");
+ }
+ } while ((dev_select < 0) || (dev_select > (numdevs - 1)));
+ g_print("\nTo select this camera, add this line to your gnashrc
file:\n");
+ g_print("set webcamDevice %d\n", dev_select);
+ } else {
+ numdevs = findVidDevs(vidVector);
+ g_print("\nThe gnashrc file reports default webcam is set to:\n");
+ g_print("%s (%s)\n", vidVector[fromrc]->deviceName,
+ vidVector[fromrc]->deviceType);
+ g_print("To change this setting, delete the 'set webcamDevice'
line\n");
+ g_print("from your gnashrc file and re-run this program.\n\n");
+ }
+ return 1;
}
| [Prev in Thread] |
Current Thread |
[Next in Thread] |
- [Gnash-commit] /srv/bzr/gnash/trunk r11280: brought VideoInput and findwebcam files up to coding style requirements,
Ben Limmer <=