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gstreamer/ext/dc1394/gstdc1394.c
Stefan Kost 37d4958fca ext/dc1394/gstdc1394.c: Set initial structure name to fix assertion, due to recent caps name constraints. 
Original commit message from CVS:
* ext/dc1394/gstdc1394.c:
Set initial structure name to fix assertion, due to recent caps name
constraints.
2007-11-25 10:12:09 +00:00

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35 KiB
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/* GStreamer
* Copyright (C) <2006> Eric Jonas <jonas@mit.edu>
* Copyright (C) <2006> Antoine Tremblay <hexa00@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/**
* SECTION:element-dc1394
*
* <refsect2>
* <title>Example launch line</title>
* <para>
* <programlisting>
* gst-launch -v dc1394 camera-number=0 ! xvimagesink
* </programlisting>
* </para>
* </refsect2>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstdc1394.h"
#include <sys/time.h>
#include <time.h>
GST_DEBUG_CATEGORY (dc1394_debug);
#define GST_CAT_DEFAULT dc1394_debug
static GstElementDetails dc1394_details =
GST_ELEMENT_DETAILS ("1394 IIDC Video Source",
"Source/Video",
"libdc1394 based source, supports 1394 IIDC cameras",
"Antoine Tremblay <hexa00@gmail.com>");
enum
{
PROP_0,
PROP_TIMESTAMP_OFFSET,
PROP_CAMNUM,
PROP_BUFSIZE
/* FILL ME */
};
GST_BOILERPLATE (GstDc1394, gst_dc1394, GstPushSrc, GST_TYPE_PUSH_SRC);
static void gst_dc1394_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_dc1394_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static GstCaps *gst_dc1394_getcaps (GstBaseSrc * bsrc);
static gboolean gst_dc1394_setcaps (GstBaseSrc * bsrc, GstCaps * caps);
static void gst_dc1394_src_fixate (GstPad * pad, GstCaps * caps);
static void gst_dc1394_get_times (GstBaseSrc * basesrc,
GstBuffer * buffer, GstClockTime * start, GstClockTime * end);
static GstFlowReturn gst_dc1394_create (GstPushSrc * psrc, GstBuffer ** buffer);
static GstStateChangeReturn
gst_dc1394_change_state (GstElement * element, GstStateChange transition);
static gboolean gst_dc1394_parse_caps (const GstCaps * caps,
gint * width,
gint * height,
gint * rate_numerator, gint * rate_denominator, gint * vmode, gint * bpp);
static gint gst_dc1394_caps_set_format_vmode_caps (GstStructure * st,
gint mode);
static gboolean gst_dc1394_set_caps_color (GstStructure * gs, gint mc);
static void gst_dc1394_set_caps_framesize (GstStructure * gs, gint width,
gint height);
static void gst_dc1394_set_caps_framesize_range (GstStructure * gs,
gint minwidth, gint maxwidth, gint incwidth,
gint minheight, gint maxheight, gint incheight);
static gint gst_dc1394_caps_set_framerate_list (GstStructure * gs,
dc1394framerates_t * framerates);
static void gst_dc1394_framerate_const_to_frac (int framerateconst,
GValue * framefrac);
static GstCaps *gst_dc1394_get_all_dc1394_caps ();
static GstCaps *gst_dc1394_get_cam_caps (GstDc1394 * src);
static gboolean gst_dc1394_open_cam_with_best_caps (GstDc1394 * src);
static gint gst_dc1394_framerate_frac_to_const (gint num, gint denom);
static void gst_dc1394_framerate_const_to_frac (gint framerateconst,
GValue * framefrac);
static gboolean
gst_dc1394_change_camera_transmission (GstDc1394 * src, gboolean on);
static void
gst_dc1394_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_set_details (element_class, &dc1394_details);
gst_element_class_add_pad_template (element_class,
gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS,
gst_dc1394_get_all_dc1394_caps ()));
}
static void
gst_dc1394_class_init (GstDc1394Class * klass)
{
GObjectClass *gobject_class;
GstBaseSrcClass *gstbasesrc_class;
GstPushSrcClass *gstpushsrc_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass *) klass;
gstbasesrc_class = (GstBaseSrcClass *) klass;
gstpushsrc_class = (GstPushSrcClass *) klass;
gstelement_class = (GstElementClass *) klass;
gobject_class->set_property = gst_dc1394_set_property;
gobject_class->get_property = gst_dc1394_get_property;
g_object_class_install_property (G_OBJECT_CLASS (klass),
PROP_TIMESTAMP_OFFSET, g_param_spec_int64 ("timestamp-offset",
"Timestamp offset",
"An offset added to timestamps set on buffers (in ns)", G_MININT64,
G_MAXINT64, 0, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass),
PROP_CAMNUM, g_param_spec_int ("camera-number",
"The number of the camera on the firewire bus",
"The number of the camera on the firewire bus", 0,
G_MAXINT, 0, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass),
PROP_BUFSIZE, g_param_spec_int ("buffer-size",
"The number of frames in the dma ringbuffer",
"The number of frames in the dma ringbuffer", 1,
G_MAXINT, 10, G_PARAM_READWRITE));
gstbasesrc_class->get_caps = gst_dc1394_getcaps;
gstbasesrc_class->set_caps = gst_dc1394_setcaps;
gstbasesrc_class->get_times = gst_dc1394_get_times;
gstpushsrc_class->create = gst_dc1394_create;
gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_dc1394_change_state);
}
static void
gst_dc1394_init (GstDc1394 * src, GstDc1394Class * g_class)
{
src->segment_start_frame = -1;
src->segment_end_frame = -1;
src->timestamp_offset = 0;
src->caps = gst_dc1394_get_all_dc1394_caps ();
src->bufsize = 10;
src->camnum = 0;
src->n_frames = 0;
gst_pad_set_fixatecaps_function (GST_BASE_SRC_PAD (src),
gst_dc1394_src_fixate);
gst_base_src_set_live (GST_BASE_SRC (src), TRUE);
}
static void
gst_dc1394_src_fixate (GstPad * pad, GstCaps * caps)
{
GstDc1394 *src = GST_DC1394 (gst_pad_get_parent (pad));
GstStructure *structure;
int i;
GST_LOG_OBJECT (src, " fixating caps to closest to 320x240 , 30 fps");
for (i = 0; i < gst_caps_get_size (caps); ++i) {
structure = gst_caps_get_structure (caps, i);
gst_structure_fixate_field_nearest_int (structure, "width", 320);
gst_structure_fixate_field_nearest_int (structure, "height", 240);
gst_structure_fixate_field_nearest_fraction (structure, "framerate", 30, 1);
}
gst_object_unref (GST_OBJECT (src));
}
static void
gst_dc1394_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstDc1394 *src = GST_DC1394 (object);
switch (prop_id) {
case PROP_TIMESTAMP_OFFSET:
src->timestamp_offset = g_value_get_int64 (value);
break;
case PROP_CAMNUM:
src->camnum = g_value_get_int (value);
break;
case PROP_BUFSIZE:
src->bufsize = g_value_get_int (value);
default:
break;
}
}
static void
gst_dc1394_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstDc1394 *src = GST_DC1394 (object);
switch (prop_id) {
case PROP_TIMESTAMP_OFFSET:
g_value_set_int64 (value, src->timestamp_offset);
break;
case PROP_CAMNUM:
g_value_set_int (value, src->camnum);
break;
case PROP_BUFSIZE:
g_value_set_int (value, src->bufsize);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GstCaps *
gst_dc1394_getcaps (GstBaseSrc * bsrc)
{
GstDc1394 *gsrc;
gsrc = GST_DC1394 (bsrc);
g_return_val_if_fail (gsrc->caps, NULL);
return gst_caps_copy (gsrc->caps);
}
static gboolean
gst_dc1394_setcaps (GstBaseSrc * bsrc, GstCaps * caps)
{
gboolean res = TRUE;
GstDc1394 *dc1394;
gint width, height, rate_denominator, rate_numerator;
gint bpp, vmode;
dc1394 = GST_DC1394 (bsrc);
if (dc1394->caps) {
gst_caps_unref (dc1394->caps);
}
dc1394->caps = gst_caps_copy (caps);
res = gst_dc1394_parse_caps (caps, &width, &height,
&rate_numerator, &rate_denominator, &vmode, &bpp);
if (res) {
/* looks ok here */
dc1394->width = width;
dc1394->height = height;
dc1394->vmode = vmode;
dc1394->rate_numerator = rate_numerator;
dc1394->rate_denominator = rate_denominator;
dc1394->bpp = bpp;
}
return res;
}
static void
gst_dc1394_get_times (GstBaseSrc * basesrc, GstBuffer * buffer,
GstClockTime * start, GstClockTime * end)
{
/* for live sources, sync on the timestamp of the buffer */
if (gst_base_src_is_live (basesrc)) {
GstClockTime timestamp = GST_BUFFER_TIMESTAMP (buffer);
if (GST_CLOCK_TIME_IS_VALID (timestamp)) {
/* get duration to calculate end time */
GstClockTime duration = GST_BUFFER_DURATION (buffer);
if (GST_CLOCK_TIME_IS_VALID (duration)) {
*end = timestamp + duration;
}
*start = timestamp;
}
} else {
*start = -1;
*end = -1;
}
}
static GstFlowReturn
gst_dc1394_create (GstPushSrc * psrc, GstBuffer ** buffer)
{
GstDc1394 *src;
GstBuffer *outbuf;
GstCaps *caps;
dc1394video_frame_t *frame[1];
GstFlowReturn res = GST_FLOW_OK;
dc1394error_t err;
src = GST_DC1394 (psrc);
err = dc1394_capture_dequeue (src->camera, DC1394_CAPTURE_POLICY_WAIT, frame);
if (err != DC1394_SUCCESS) {
GST_ELEMENT_ERROR (src, RESOURCE, FAILED,
("failed to dequeue frame"), ("failed to dequeue frame"));
goto error;
}
outbuf = gst_buffer_new_and_alloc (frame[0]->image_bytes);
memcpy (GST_BUFFER_MALLOCDATA (outbuf), (guchar *) frame[0]->image,
frame[0]->image_bytes * sizeof (guchar));
GST_BUFFER_DATA (outbuf) = GST_BUFFER_MALLOCDATA (outbuf);
caps = gst_pad_get_caps (GST_BASE_SRC_PAD (psrc));
gst_buffer_set_caps (outbuf, caps);
gst_caps_unref (caps);
GST_BUFFER_TIMESTAMP (outbuf) = src->timestamp_offset + src->running_time;
if (src->rate_numerator != 0) {
GST_BUFFER_DURATION (outbuf) = gst_util_uint64_scale_int (GST_SECOND,
src->rate_denominator, src->rate_numerator);
}
src->n_frames++;
if (src->rate_numerator != 0) {
src->running_time = gst_util_uint64_scale_int (src->n_frames * GST_SECOND,
src->rate_denominator, src->rate_numerator);
}
if (dc1394_capture_enqueue (src->camera, frame[0]) != DC1394_SUCCESS) {
GST_ELEMENT_ERROR (src, RESOURCE, FAILED, ("failed to enqueue frame"),
("failed to enqueue frame"));
goto error;
}
*buffer = outbuf;
return res;
error:
{
return GST_FLOW_ERROR;
}
}
static gboolean
gst_dc1394_parse_caps (const GstCaps * caps,
gint * width,
gint * height,
gint * rate_numerator, gint * rate_denominator, gint * vmode, gint * bpp)
{
const GstStructure *structure;
GstPadLinkReturn ret;
const GValue *framerate;
if (gst_caps_get_size (caps) < 1)
return FALSE;
structure = gst_caps_get_structure (caps, 0);
ret = gst_structure_get_int (structure, "width", width);
ret &= gst_structure_get_int (structure, "height", height);
framerate = gst_structure_get_value (structure, "framerate");
ret &= gst_structure_get_int (structure, "vmode", vmode);
ret &= gst_structure_get_int (structure, "bpp", bpp);
if (framerate) {
*rate_numerator = gst_value_get_fraction_numerator (framerate);
*rate_denominator = gst_value_get_fraction_denominator (framerate);
} else {
ret = FALSE;
}
return ret;
}
static GstStateChangeReturn
gst_dc1394_change_state (GstElement * element, GstStateChange transition)
{
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
GstDc1394 *src = GST_DC1394 (element);
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
GST_LOG_OBJECT (src, "State change null to ready");
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
GST_LOG_OBJECT (src, "State ready to paused");
if (src->caps) {
gst_caps_unref (src->caps);
src->caps = NULL;
}
src->caps = gst_dc1394_get_cam_caps (src);
if (src->caps == NULL) {
GST_LOG_OBJECT (src,
"Error : Set property could not get cam caps ! , reverting to default");
src->caps = gst_dc1394_get_all_dc1394_caps ();
ret = GST_STATE_CHANGE_FAILURE;
}
break;
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
GST_LOG_OBJECT (src, "State change paused to playing");
if (!gst_dc1394_open_cam_with_best_caps (src)) {
ret = GST_STATE_CHANGE_FAILURE;
}
if (src->camera && !gst_dc1394_change_camera_transmission (src, TRUE)) {
ret = GST_STATE_CHANGE_FAILURE;
}
break;
default:
break;
}
if (ret == GST_STATE_CHANGE_FAILURE)
return ret;
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
switch (transition) {
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
GST_LOG_OBJECT (src, "State change playing to paused");
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
GST_LOG_OBJECT (src, "State change paused to ready");
if (src->camera && !gst_dc1394_change_camera_transmission (src, FALSE)) {
if (src->camera) {
dc1394_free_camera (src->camera);
}
src->camera = NULL;
if (src->caps) {
gst_caps_unref (src->caps);
src->caps = NULL;
}
ret = GST_STATE_CHANGE_FAILURE;
}
break;
case GST_STATE_CHANGE_READY_TO_NULL:
GST_LOG_OBJECT (src, "State change ready to null");
if (src->camera) {
dc1394_free_camera (src->camera);
}
src->camera = NULL;
if (src->caps) {
gst_caps_unref (src->caps);
src->caps = NULL;
}
break;
default:
break;
}
return ret;
}
static gint
gst_dc1394_caps_set_format_vmode_caps (GstStructure * gs, gint mode)
{
gint retval = 0;
switch (mode) {
case DC1394_VIDEO_MODE_160x120_YUV444:
gst_dc1394_set_caps_color (gs, DC1394_COLOR_CODING_YUV444);
gst_dc1394_set_caps_framesize (gs, 160, 120);
break;
case DC1394_VIDEO_MODE_320x240_YUV422:
gst_dc1394_set_caps_color (gs, DC1394_COLOR_CODING_YUV422);
gst_dc1394_set_caps_framesize (gs, 320, 240);
break;
case DC1394_VIDEO_MODE_640x480_YUV411:
gst_dc1394_set_caps_color (gs, DC1394_COLOR_CODING_YUV411);
gst_dc1394_set_caps_framesize (gs, 640, 480);
break;
case DC1394_VIDEO_MODE_640x480_YUV422:
gst_dc1394_set_caps_color (gs, DC1394_COLOR_CODING_YUV422);
gst_dc1394_set_caps_framesize (gs, 640, 480);
break;
case DC1394_VIDEO_MODE_640x480_RGB8:
gst_dc1394_set_caps_color (gs, DC1394_COLOR_CODING_RGB8);
gst_dc1394_set_caps_framesize (gs, 640, 480);
break;
case DC1394_VIDEO_MODE_640x480_MONO8:
gst_dc1394_set_caps_color (gs, DC1394_COLOR_CODING_MONO8);
gst_dc1394_set_caps_framesize (gs, 640, 480);
break;
case DC1394_VIDEO_MODE_640x480_MONO16:
gst_dc1394_set_caps_color (gs, DC1394_COLOR_CODING_MONO16);
gst_dc1394_set_caps_framesize (gs, 640, 480);
break;
case DC1394_VIDEO_MODE_800x600_YUV422:
gst_dc1394_set_caps_color (gs, DC1394_COLOR_CODING_YUV422);
gst_dc1394_set_caps_framesize (gs, 800, 600);
break;
case DC1394_VIDEO_MODE_800x600_RGB8:
gst_dc1394_set_caps_color (gs, DC1394_COLOR_CODING_RGB8);
gst_dc1394_set_caps_framesize (gs, 800, 600);
break;
case DC1394_VIDEO_MODE_800x600_MONO8:
gst_dc1394_set_caps_color (gs, DC1394_COLOR_CODING_MONO8);
gst_dc1394_set_caps_framesize (gs, 800, 600);
break;
case DC1394_VIDEO_MODE_1024x768_YUV422:
gst_dc1394_set_caps_color (gs, DC1394_COLOR_CODING_YUV422);
gst_dc1394_set_caps_framesize (gs, 1024, 768);
break;
case DC1394_VIDEO_MODE_1024x768_RGB8:
gst_dc1394_set_caps_color (gs, DC1394_COLOR_CODING_RGB8);
gst_dc1394_set_caps_framesize (gs, 1024, 768);
break;
case DC1394_VIDEO_MODE_1024x768_MONO8:
gst_dc1394_set_caps_color (gs, DC1394_COLOR_CODING_MONO8);
gst_dc1394_set_caps_framesize (gs, 1024, 768);
break;
case DC1394_VIDEO_MODE_800x600_MONO16:
gst_dc1394_set_caps_color (gs, DC1394_COLOR_CODING_MONO16);
gst_dc1394_set_caps_framesize (gs, 800, 600);
break;
case DC1394_VIDEO_MODE_1024x768_MONO16:
gst_dc1394_set_caps_color (gs, DC1394_COLOR_CODING_MONO16);
gst_dc1394_set_caps_framesize (gs, 1024, 768);
break;
case DC1394_VIDEO_MODE_1280x960_YUV422:
gst_dc1394_set_caps_color (gs, DC1394_COLOR_CODING_YUV422);
gst_dc1394_set_caps_framesize (gs, 1280, 960);
break;
case DC1394_VIDEO_MODE_1280x960_RGB8:
gst_dc1394_set_caps_color (gs, DC1394_COLOR_CODING_RGB8);
gst_dc1394_set_caps_framesize (gs, 1280, 960);
break;
case DC1394_VIDEO_MODE_1280x960_MONO8:
gst_dc1394_set_caps_color (gs, DC1394_COLOR_CODING_MONO8);
gst_dc1394_set_caps_framesize (gs, 1280, 960);
break;
case DC1394_VIDEO_MODE_1600x1200_YUV422:
gst_dc1394_set_caps_color (gs, DC1394_COLOR_CODING_YUV422);
gst_dc1394_set_caps_framesize (gs, 1600, 1200);
break;
case DC1394_VIDEO_MODE_1600x1200_RGB8:
gst_dc1394_set_caps_color (gs, DC1394_COLOR_CODING_RGB8);
gst_dc1394_set_caps_framesize (gs, 1600, 1200);
break;
case DC1394_VIDEO_MODE_1600x1200_MONO8:
gst_dc1394_set_caps_color (gs, DC1394_COLOR_CODING_MONO8);
gst_dc1394_set_caps_framesize (gs, 1600, 1200);
break;
case DC1394_VIDEO_MODE_1280x960_MONO16:
gst_dc1394_set_caps_color (gs, DC1394_COLOR_CODING_MONO16);
gst_dc1394_set_caps_framesize (gs, 1280, 960);
break;
case DC1394_VIDEO_MODE_1600x1200_MONO16:
gst_dc1394_set_caps_color (gs, DC1394_COLOR_CODING_MONO8);
gst_dc1394_set_caps_framesize (gs, 1600, 1200);
break;
default:
retval = -1;
}
return retval;
}
static gboolean
gst_dc1394_set_caps_color (GstStructure * gs, gint mc)
{
gboolean ret = TRUE;
gint fourcc;
switch (mc) {
case DC1394_COLOR_CODING_YUV444:
gst_structure_set_name (gs, "video/x-raw-yuv");
fourcc = GST_MAKE_FOURCC ('I', 'Y', 'U', '2');
gst_structure_set (gs,
"format", GST_TYPE_FOURCC, fourcc, "bpp", G_TYPE_INT, 16, NULL);
break;
case DC1394_COLOR_CODING_YUV422:
gst_structure_set_name (gs, "video/x-raw-yuv");
fourcc = GST_MAKE_FOURCC ('U', 'Y', 'V', 'Y');
gst_structure_set (gs,
"format", GST_TYPE_FOURCC, fourcc, "bpp", G_TYPE_INT, 16, NULL);
break;
case DC1394_COLOR_CODING_YUV411:
gst_structure_set_name (gs, "video/x-raw-yuv");
fourcc = GST_MAKE_FOURCC ('I', 'Y', 'U', '1');
gst_structure_set (gs,
"format", GST_TYPE_FOURCC, fourcc, "bpp", G_TYPE_INT, 12, NULL);
break;
case DC1394_COLOR_CODING_RGB8:
gst_structure_set_name (gs, "video/x-raw-rgb");
gst_structure_set (gs,
"bpp", G_TYPE_INT, 24,
"depth", G_TYPE_INT, 24,
"endianness", G_TYPE_INT, G_BIG_ENDIAN,
"red_mask", G_TYPE_INT, 0xFF0000,
"green_mask", G_TYPE_INT, 0x00FF00,
"blue_mask", G_TYPE_INT, 0x0000FF, NULL);
break;
case DC1394_COLOR_CODING_MONO8:
gst_structure_set_name (gs, "video/x-raw-gray");
gst_structure_set (gs,
"bpp", G_TYPE_INT, 8, "depth", G_TYPE_INT, 8, NULL);
break;
case DC1394_COLOR_CODING_MONO16:
gst_structure_set_name (gs, "video/x-raw-gray");
gst_structure_set (gs,
"bpp", G_TYPE_INT, 16, "depth", G_TYPE_INT, 16, NULL);
// there is no fourcc for this format
break;
default:
GST_DEBUG ("Ignoring unsupported color format %d", mc);
ret = FALSE;
break;
}
return ret;
}
static void
gst_dc1394_set_caps_framesize (GstStructure * gs, gint width, gint height)
{
gst_structure_set (gs,
"width", G_TYPE_INT, width, "height", G_TYPE_INT, height, NULL);
}
static void
gst_dc1394_set_caps_framesize_range (GstStructure * gs,
gint minwidth,
gint maxwidth,
gint incwidth, gint minheight, gint maxheight, gint incheight)
{
/*
Format 7 cameras allow you to change the camera width/height in multiples
of incwidth/incheight up to some max. This sets the necessary
list structure in the gst caps structure
*/
GValue widthlist = { 0 };
GValue widthval = { 0 };
GValue heightlist = { 0 };
GValue heightval = { 0 };
gint x = 0;
g_value_init (&widthlist, GST_TYPE_LIST);
g_value_init (&widthval, G_TYPE_INT);
for (x = minwidth; x <= maxwidth; x += incwidth) {
g_value_set_int (&widthval, x);
gst_value_list_append_value (&widthlist, &widthval);
}
gst_structure_set_value (gs, "width", &widthlist);
g_value_unset (&widthlist);
g_value_unset (&widthval);
g_value_init (&heightlist, GST_TYPE_LIST);
g_value_init (&heightval, G_TYPE_INT);
for (x = minheight; x <= maxheight; x += incheight) {
g_value_set_int (&heightval, x);
gst_value_list_append_value (&heightlist, &heightval);
}
gst_structure_set_value (gs, "height", &heightlist);
g_value_unset (&heightlist);
g_value_unset (&heightval);
}
static gint
gst_dc1394_caps_set_framerate_list (GstStructure * gs,
dc1394framerates_t * framerates)
{
GValue framefrac = { 0 };
GValue frameratelist = { 0 };
gint f;
g_value_init (&frameratelist, GST_TYPE_LIST);
g_value_init (&framefrac, GST_TYPE_FRACTION);
// figure out the frame rate
for (f = framerates->num - 1; f >= 0; f--) {
/* reverse order so we place the faster frame rates higher in
the sequence */
if (framerates->framerates[f]) {
gst_dc1394_framerate_const_to_frac (framerates->framerates[f],
&framefrac);
gst_value_list_append_value (&frameratelist, &framefrac);
}
}
gst_structure_set_value (gs, "framerate", &frameratelist);
g_value_unset (&framefrac);
g_value_unset (&frameratelist);
return 0;
}
static void
gst_dc1394_framerate_const_to_frac (gint framerateconst, GValue * framefrac)
{
// frac must have been already initialized
switch (framerateconst) {
case DC1394_FRAMERATE_1_875:
gst_value_set_fraction (framefrac, 15, 8);
break;
case DC1394_FRAMERATE_3_75:
gst_value_set_fraction (framefrac, 15, 4);
break;
case DC1394_FRAMERATE_7_5:
gst_value_set_fraction (framefrac, 15, 2);
break;
case DC1394_FRAMERATE_15:
gst_value_set_fraction (framefrac, 15, 1);
break;
case DC1394_FRAMERATE_30:
gst_value_set_fraction (framefrac, 30, 1);
break;
case DC1394_FRAMERATE_60:
gst_value_set_fraction (framefrac, 60, 1);
break;
case DC1394_FRAMERATE_120:
gst_value_set_fraction (framefrac, 120, 1);
break;
case DC1394_FRAMERATE_240:
gst_value_set_fraction (framefrac, 240, 1);
break;
}
}
GstCaps *
gst_dc1394_get_all_dc1394_caps ()
{
/*
generate all possible caps
*/
GstCaps *gcaps;
gint i = 0;
gcaps = gst_caps_new_empty ();
// first, the fixed mode caps
for (i = DC1394_VIDEO_MODE_MIN; i < DC1394_VIDEO_MODE_EXIF; i++) {
GstStructure *gs = gst_structure_empty_new ("video");
gint ret = gst_dc1394_caps_set_format_vmode_caps (gs, i);
gst_structure_set (gs,
"framerate", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT, 1, NULL);
gst_structure_set (gs, "vmode", G_TYPE_INT, i, NULL);
if (ret >= 0) {
gst_caps_append_structure (gcaps, gs);
}
}
// then Format 7 options
for (i = DC1394_COLOR_CODING_MIN; i <= DC1394_COLOR_CODING_MAX; i++) {
GstStructure *gs = gst_structure_empty_new ("video");
//int ret = gst_dc1394_caps_set_format_vmode_caps(gs, i);
gst_structure_set (gs, "vmode", GST_TYPE_INT_RANGE, 1, G_MAXINT, NULL);
gst_structure_set (gs,
"framerate", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT, 1, NULL);
gst_structure_set (gs,
"width", GST_TYPE_INT_RANGE, 1, G_MAXINT,
"height", GST_TYPE_INT_RANGE, 1, G_MAXINT, NULL);
if (gst_dc1394_set_caps_color (gs, i)) {
gst_caps_append_structure (gcaps, gs);
}
}
return gcaps;
}
GstCaps *
gst_dc1394_get_cam_caps (GstDc1394 * src)
{
dc1394camera_t *camera = NULL;
dc1394camera_t **cameras = NULL;
dc1394error_t camerr;
guint numCameras;
gint i, j;
dc1394video_modes_t modes;
dc1394framerates_t framerates;
GstCaps *gcaps = NULL;
gcaps = gst_caps_new_empty ();
camerr = dc1394_find_cameras (&cameras, &numCameras);
if (camerr != DC1394_SUCCESS) {
if (camerr == DC1394_NO_CAMERA) {
GST_ELEMENT_ERROR (src, RESOURCE, NOT_FOUND, ("There were no cameras"),
("There were no cameras"));
} else {
GST_ELEMENT_ERROR (src, RESOURCE, NOT_FOUND,
("Can't find cameras error : %d", camerr),
("Can't find cameras error : %d", camerr));
}
goto error;
}
if (src->camnum > (numCameras - 1)) {
GST_ELEMENT_ERROR (src, RESOURCE, FAILED, ("Invalid camera number"),
("Invalid camera number %d", src->camnum));
for (i = 0; i < numCameras; i++) {
if (i != src->camnum) {
dc1394_free_camera (cameras[i]);
}
}
goto error;
}
camera = cameras[src->camnum];
// free the other cameras
for (i = 0; i < numCameras; i++) {
if (i != src->camnum) {
dc1394_free_camera (cameras[i]);
}
}
free (cameras);
camerr = dc1394_video_get_supported_modes (camera, &modes);
if (camerr != DC1394_SUCCESS) {
GST_ELEMENT_ERROR (src, RESOURCE, FAILED, ("Error getting supported modes"),
("Error getting supported modes"));
goto error;
}
for (i = modes.num - 1; i >= 0; i--) {
int m = modes.modes[i];
if (m < DC1394_VIDEO_MODE_EXIF) {
GstStructure *gs = gst_structure_empty_new ("");
gst_structure_set (gs, "vmode", G_TYPE_INT, m, NULL);
if (gst_dc1394_caps_set_format_vmode_caps (gs, m) < 0) {
GST_ELEMENT_ERROR (src, STREAM, FAILED,
("attempt to set mode to %d failed", m),
("attempt to set mode to %d failed", m));
goto error;
} else {
camerr = dc1394_video_get_supported_framerates (camera, m, &framerates);
gst_dc1394_caps_set_framerate_list (gs, &framerates);
gst_caps_append_structure (gcaps, gs);
}
} else {
// FORMAT 7
guint maxx, maxy;
GstStructure *gs = gst_structure_empty_new ("");
dc1394color_codings_t colormodes;
guint xunit, yunit;
gst_structure_set (gs, "vmode", G_TYPE_INT, m, NULL);
// Get the maximum frame size
camerr = dc1394_format7_get_max_image_size (camera, m, &maxx, &maxy);
if (camerr != DC1394_SUCCESS) {
GST_ELEMENT_ERROR (src, RESOURCE, FAILED,
("Error getting format 7 max image size"),
("Error getting format 7 max image size"));
goto error;
}
GST_LOG_OBJECT (src, "Format 7 maxx=%d maxy=%d", maxx, maxy);
camerr = dc1394_format7_get_unit_size (camera, m, &xunit, &yunit);
if (camerr != DC1394_SUCCESS) {
GST_ELEMENT_ERROR (src, RESOURCE, FAILED,
("Error getting format 7 image unit size"),
("Error getting format 7 image unit size"));
goto error;
}
GST_LOG_OBJECT (src, "Format 7 unitx=%d unity=%d", xunit, yunit);
gst_dc1394_set_caps_framesize_range (gs, xunit, maxx, xunit,
yunit, maxy, yunit);
// note that format 7 has no concept of a framerate, so we pass the
// full range
gst_structure_set (gs,
"framerate", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT, 1, NULL);
// get the available color codings
camerr = dc1394_format7_get_color_codings (camera, m, &colormodes);
if (camerr != DC1394_SUCCESS) {
GST_ELEMENT_ERROR (src, RESOURCE, FAILED,
("Error getting format 7 color modes"),
("Error getting format 7 color modes"));
goto error;
}
for (j = 0; j < colormodes.num; j++) {
GstStructure *newgs = gst_structure_copy (gs);
gst_dc1394_set_caps_color (newgs, colormodes.codings[j]);
GST_LOG_OBJECT (src, "Format 7 colormode set : %d",
colormodes.codings[j]);
// note that since there are multiple color modes, we append
// multiple structures.
gst_caps_append_structure (gcaps, newgs);
}
}
}
if (camera) {
dc1394_free_camera (camera);
}
return gcaps;
error:
if (gcaps) {
gst_caps_unref (gcaps);
}
if (camera) {
dc1394_free_camera (camera);
camera = NULL;
}
return NULL;
}
static gint
gst_dc1394_framerate_frac_to_const (gint num, gint denom)
{
// frac must have been already initialized
int retvalue = -1;
if (num == 15 && denom == 8)
retvalue = DC1394_FRAMERATE_1_875;
if (num == 15 && denom == 4)
retvalue = DC1394_FRAMERATE_3_75;
if (num == 15 && denom == 2)
retvalue = DC1394_FRAMERATE_7_5;
if (num == 15 && denom == 1)
retvalue = DC1394_FRAMERATE_15;
if (num == 30 && denom == 1)
retvalue = DC1394_FRAMERATE_30;
if (num == 60 && denom == 1)
retvalue = DC1394_FRAMERATE_60;
return retvalue;
}
static gboolean
gst_dc1394_open_cam_with_best_caps (GstDc1394 * src)
{
dc1394camera_t **cameras = NULL;
guint numCameras;
gint i;
gint err;
int framerateconst;
GST_LOG_OBJECT (src, "Opening the camera!!!");
if (dc1394_find_cameras (&cameras, &numCameras) != DC1394_SUCCESS) {
GST_ELEMENT_ERROR (src, RESOURCE, FAILED, ("Can't find cameras"),
("Can't find cameras"));
goto error;
}
GST_LOG_OBJECT (src, "Found %d cameras", numCameras);
if (src->camnum > (numCameras - 1)) {
GST_ELEMENT_ERROR (src, RESOURCE, FAILED, ("Invalid camera number"),
("Invalid camera number"));
goto error;
}
GST_LOG_OBJECT (src, "Opening camera : %d", src->camnum);
src->camera = cameras[src->camnum];
// free the other cameras
for (i = 0; i < numCameras; i++) {
if (i != src->camnum)
dc1394_free_camera (cameras[i]);
}
free (cameras);
// figure out mode
framerateconst = gst_dc1394_framerate_frac_to_const (src->rate_numerator,
src->rate_denominator);
GST_LOG_OBJECT (src, "The dma buffer queue size is %d buffers",
src->bufsize);
//FIXME HAVE THIS AUTOMATIC OR AS A PARAMETER ?
err = dc1394_video_set_iso_speed (src->camera, DC1394_ISO_SPEED_400);
if (err != DC1394_SUCCESS) {
GST_ELEMENT_ERROR (src, RESOURCE, FAILED, ("Could not set ISO speed"),
("Could not set ISO speed"));
goto error;
}
GST_LOG_OBJECT (src, "Setting mode : %d", src->vmode);
err = dc1394_video_set_mode (src->camera, src->vmode);
if (err != DC1394_SUCCESS) {
GST_ELEMENT_ERROR (src, RESOURCE, FAILED, ("Could not set video mode %d",
src->vmode), ("Could not set video mode %d", src->vmode));
goto error;
}
GST_LOG_OBJECT (src, "Setting framerate : %d", framerateconst);
dc1394_video_set_framerate (src->camera, framerateconst);
if (err != DC1394_SUCCESS) {
GST_ELEMENT_ERROR (src, RESOURCE, FAILED, ("Could not set framerate to %d",
framerateconst), ("Could not set framerate to %d", framerateconst));
goto error;
}
// set any format-7 parameters if this is a format-7 mode
if (src->vmode >= DC1394_VIDEO_MODE_FORMAT7_MIN &&
src->vmode <= DC1394_VIDEO_MODE_FORMAT7_MAX) {
// the big thing we care about right now is frame size
err = dc1394_format7_set_image_size (src->camera, src->vmode,
src->width, src->height);
if (err != DC1394_SUCCESS) {
GST_ELEMENT_ERROR (src, RESOURCE, FAILED,
("Could not set format 7 image size to %d x %d", src->width,
src->height), ("Could not set format 7 image size to %d x %d",
src->width, src->height));
goto error;
}
}
err = dc1394_capture_setup (src->camera, src->bufsize,
DC1394_CAPTURE_FLAGS_DEFAULT);
if (err != DC1394_SUCCESS) {
GST_ELEMENT_ERROR (src, RESOURCE, FAILED, ("Error setting capture mode"),
("Error setting capture mode"));
}
if (err != DC1394_SUCCESS) {
if (err == DC1394_NO_BANDWIDTH) {
GST_LOG_OBJECT (src, "Capture setup_dma failed."
"Trying to cleanup the iso_channels_and_bandwidth and retrying");
// try to cleanup the bandwidth and retry
err = dc1394_cleanup_iso_channels_and_bandwidth (src->camera);
if (err != DC1394_SUCCESS) {
GST_ELEMENT_ERROR (src, RESOURCE, FAILED,
("Could not cleanup bandwidth"), ("Could not cleanup bandwidth"));
goto error;
} else {
err =
dc1394_capture_setup (src->camera, src->bufsize,
DC1394_CAPTURE_FLAGS_DEFAULT);
if (err != DC1394_SUCCESS) {
GST_ELEMENT_ERROR (src, RESOURCE, FAILED,
("unable to setup camera error %d", err),
("unable to setup camera error %d", err));
goto error;
}
}
} else {
GST_ELEMENT_ERROR (src, RESOURCE, FAILED,
("unable to setup camera error %d", err),
("unable to setup camera error %d", err));
goto error;
}
}
return TRUE;
error:
if (src->camera) {
dc1394_free_camera (src->camera);
src->camera = NULL;
}
return FALSE;;
}
gboolean
gst_dc1394_change_camera_transmission (GstDc1394 * src, gboolean on)
{
dc1394switch_t status = DC1394_OFF;
dc1394error_t err = DC1394_FAILURE;
gint i = 0;
g_return_val_if_fail (src->camera, FALSE);
if (on) {
status = dc1394_video_set_transmission (src->camera, DC1394_ON);
i = 0;
while (status == DC1394_OFF && i++ < 5) {
usleep (50000);
if (dc1394_video_get_transmission (src->camera,
&status) != DC1394_SUCCESS) {
if (status == DC1394_OFF) {
GST_LOG_OBJECT (src, "camera is still off , retrying");
}
}
}
if (i == 5) {
GST_ELEMENT_ERROR (src, RESOURCE, FAILED,
("Camera doesn't seem to want to turn on!"),
("Camera doesn't seem to want to turn on!"));
return FALSE;
}
GST_LOG_OBJECT (src, "got transmision status ON");
} else {
if (dc1394_video_set_transmission (src->camera,
DC1394_OFF) != DC1394_SUCCESS) {
GST_ELEMENT_ERROR (src, RESOURCE, FAILED, ("Unable to stop transmision"),
("Unable to stop transmision"));
return FALSE;
}
GST_LOG_OBJECT (src, "Stopping capture");
err = dc1394_capture_stop (src->camera);
if (err > 0) {
GST_ELEMENT_ERROR (src, RESOURCE, FAILED, ("Capture stop error : %d ",
err), ("Capture stop error : %d ", err));
return FALSE;
} else {
GST_LOG_OBJECT (src, "Capture stoped successfully");
}
}
return TRUE;
}
static gboolean
plugin_init (GstPlugin * plugin)
{
GST_DEBUG_CATEGORY_INIT (dc1394_debug, "dc1394", 0, "DC1394 interface");
return gst_element_register (plugin, "dc1394src", GST_RANK_NONE,
GST_TYPE_DC1394);
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"dc1394",
"1394 IIDC Video Source",
plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)
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