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gstreamer/gst/videotestsrc/gstvideotestsrc.c
Sebastian Dröge 4e649b5bff videotestsrc: Update for basesrc API changes
2012-05-01 13:33:20 +02:00

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/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
* Copyright (C) <2002> David A. Schleef <ds@schleef.org>
*
* 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-videotestsrc
*
* The videotestsrc element is used to produce test video data in a wide variety
* of formats. The video test data produced can be controlled with the "pattern"
* property.
*
* <refsect2>
* <title>Example launch line</title>
* |[
* gst-launch -v videotestsrc pattern=snow ! ximagesink
* ]| Shows random noise in an X window.
* </refsect2>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstvideotestsrc.h"
#include "gstvideotestsrcorc.h"
#include "videotestsrc.h"
#include <string.h>
#include <stdlib.h>
GST_DEBUG_CATEGORY_STATIC (video_test_src_debug);
#define GST_CAT_DEFAULT video_test_src_debug
#define DEFAULT_PATTERN GST_VIDEO_TEST_SRC_SMPTE
#define DEFAULT_TIMESTAMP_OFFSET 0
#define DEFAULT_IS_LIVE FALSE
#define DEFAULT_COLOR_SPEC GST_VIDEO_TEST_SRC_BT601
#define DEFAULT_FOREGROUND_COLOR 0xffffffff
#define DEFAULT_BACKGROUND_COLOR 0xff000000
#define DEFAULT_HORIZONTAL_SPEED 0
enum
{
PROP_0,
PROP_PATTERN,
PROP_TIMESTAMP_OFFSET,
PROP_IS_LIVE,
PROP_K0,
PROP_KX,
PROP_KY,
PROP_KT,
PROP_KXT,
PROP_KYT,
PROP_KXY,
PROP_KX2,
PROP_KY2,
PROP_KT2,
PROP_XOFFSET,
PROP_YOFFSET,
PROP_FOREGROUND_COLOR,
PROP_BACKGROUND_COLOR,
PROP_HORIZONTAL_SPEED,
PROP_LAST
};
#define gst_video_test_src_parent_class parent_class
G_DEFINE_TYPE (GstVideoTestSrc, gst_video_test_src, GST_TYPE_PUSH_SRC);
static void gst_video_test_src_set_pattern (GstVideoTestSrc * videotestsrc,
int pattern_type);
static void gst_video_test_src_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_video_test_src_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static GstCaps *gst_video_test_src_getcaps (GstBaseSrc * bsrc,
GstCaps * filter);
static gboolean gst_video_test_src_setcaps (GstBaseSrc * bsrc, GstCaps * caps);
static GstCaps *gst_video_test_src_src_fixate (GstBaseSrc * bsrc,
GstCaps * caps);
static gboolean gst_video_test_src_is_seekable (GstBaseSrc * psrc);
static gboolean gst_video_test_src_do_seek (GstBaseSrc * bsrc,
GstSegment * segment);
static gboolean gst_video_test_src_query (GstBaseSrc * bsrc, GstQuery * query);
static void gst_video_test_src_get_times (GstBaseSrc * basesrc,
GstBuffer * buffer, GstClockTime * start, GstClockTime * end);
static gboolean gst_video_test_src_decide_allocation (GstBaseSrc * bsrc,
GstQuery * query);
static GstFlowReturn gst_video_test_src_fill (GstPushSrc * psrc,
GstBuffer * buffer);
static gboolean gst_video_test_src_start (GstBaseSrc * basesrc);
static gboolean gst_video_test_src_stop (GstBaseSrc * basesrc);
#define GST_TYPE_VIDEO_TEST_SRC_PATTERN (gst_video_test_src_pattern_get_type ())
static GType
gst_video_test_src_pattern_get_type (void)
{
static GType video_test_src_pattern_type = 0;
static const GEnumValue pattern_types[] = {
{GST_VIDEO_TEST_SRC_SMPTE, "SMPTE 100% color bars", "smpte"},
{GST_VIDEO_TEST_SRC_SNOW, "Random (television snow)", "snow"},
{GST_VIDEO_TEST_SRC_BLACK, "100% Black", "black"},
{GST_VIDEO_TEST_SRC_WHITE, "100% White", "white"},
{GST_VIDEO_TEST_SRC_RED, "Red", "red"},
{GST_VIDEO_TEST_SRC_GREEN, "Green", "green"},
{GST_VIDEO_TEST_SRC_BLUE, "Blue", "blue"},
{GST_VIDEO_TEST_SRC_CHECKERS1, "Checkers 1px", "checkers-1"},
{GST_VIDEO_TEST_SRC_CHECKERS2, "Checkers 2px", "checkers-2"},
{GST_VIDEO_TEST_SRC_CHECKERS4, "Checkers 4px", "checkers-4"},
{GST_VIDEO_TEST_SRC_CHECKERS8, "Checkers 8px", "checkers-8"},
{GST_VIDEO_TEST_SRC_CIRCULAR, "Circular", "circular"},
{GST_VIDEO_TEST_SRC_BLINK, "Blink", "blink"},
{GST_VIDEO_TEST_SRC_SMPTE75, "SMPTE 75% color bars", "smpte75"},
{GST_VIDEO_TEST_SRC_ZONE_PLATE, "Zone plate", "zone-plate"},
{GST_VIDEO_TEST_SRC_GAMUT, "Gamut checkers", "gamut"},
{GST_VIDEO_TEST_SRC_CHROMA_ZONE_PLATE, "Chroma zone plate",
"chroma-zone-plate"},
{GST_VIDEO_TEST_SRC_SOLID, "Solid color", "solid-color"},
{GST_VIDEO_TEST_SRC_BALL, "Moving ball", "ball"},
{GST_VIDEO_TEST_SRC_SMPTE100, "SMPTE 100% color bars", "smpte100"},
{GST_VIDEO_TEST_SRC_BAR, "Bar", "bar"},
{0, NULL, NULL}
};
if (!video_test_src_pattern_type) {
video_test_src_pattern_type =
g_enum_register_static ("GstVideoTestSrcPattern", pattern_types);
}
return video_test_src_pattern_type;
}
static void
gst_video_test_src_class_init (GstVideoTestSrcClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
GstBaseSrcClass *gstbasesrc_class;
GstPushSrcClass *gstpushsrc_class;
GstCaps *templ_caps;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
gstbasesrc_class = (GstBaseSrcClass *) klass;
gstpushsrc_class = (GstPushSrcClass *) klass;
gobject_class->set_property = gst_video_test_src_set_property;
gobject_class->get_property = gst_video_test_src_get_property;
g_object_class_install_property (gobject_class, PROP_PATTERN,
g_param_spec_enum ("pattern", "Pattern",
"Type of test pattern to generate", GST_TYPE_VIDEO_TEST_SRC_PATTERN,
DEFAULT_PATTERN, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, 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_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_IS_LIVE,
g_param_spec_boolean ("is-live", "Is Live",
"Whether to act as a live source", DEFAULT_IS_LIVE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_K0,
g_param_spec_int ("k0", "Zoneplate zero order phase",
"Zoneplate zero order phase, for generating plain fields or phase offsets",
G_MININT32, G_MAXINT32, 0,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_KX,
g_param_spec_int ("kx", "Zoneplate 1st order x phase",
"Zoneplate 1st order x phase, for generating constant horizontal frequencies",
G_MININT32, G_MAXINT32, 0,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_KY,
g_param_spec_int ("ky", "Zoneplate 1st order y phase",
"Zoneplate 1st order y phase, for generating contant vertical frequencies",
G_MININT32, G_MAXINT32, 0,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_KT,
g_param_spec_int ("kt", "Zoneplate 1st order t phase",
"Zoneplate 1st order t phase, for generating phase rotation as a function of time",
G_MININT32, G_MAXINT32, 0,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_KXT,
g_param_spec_int ("kxt", "Zoneplate x*t product phase",
"Zoneplate x*t product phase, normalised to kxy/256 cycles per vertical pixel at width/2 from origin",
G_MININT32, G_MAXINT32, 0,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_KYT,
g_param_spec_int ("kyt", "Zoneplate y*t product phase",
"Zoneplate y*t product phase", G_MININT32, G_MAXINT32, 0,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_KXY,
g_param_spec_int ("kxy", "Zoneplate x*y product phase",
"Zoneplate x*y product phase", G_MININT32, G_MAXINT32, 0,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_KX2,
g_param_spec_int ("kx2", "Zoneplate 2nd order x phase",
"Zoneplate 2nd order x phase, normalised to kx2/256 cycles per horizontal pixel at width/2 from origin",
G_MININT32, G_MAXINT32, 0,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_KY2,
g_param_spec_int ("ky2", "Zoneplate 2nd order y phase",
"Zoneplate 2nd order y phase, normailsed to ky2/256 cycles per vertical pixel at height/2 from origin",
G_MININT32, G_MAXINT32, 0,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_KT2,
g_param_spec_int ("kt2", "Zoneplate 2nd order t phase",
"Zoneplate 2nd order t phase, t*t/256 cycles per picture", G_MININT32,
G_MAXINT32, 0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_XOFFSET,
g_param_spec_int ("xoffset", "Zoneplate 2nd order products x offset",
"Zoneplate 2nd order products x offset", G_MININT32, G_MAXINT32, 0,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_YOFFSET,
g_param_spec_int ("yoffset", "Zoneplate 2nd order products y offset",
"Zoneplate 2nd order products y offset", G_MININT32, G_MAXINT32, 0,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/**
* GstVideoTestSrc:foreground-color
*
* Color to use for solid-color pattern and foreground color of other
* patterns. Default is white (0xffffffff).
*
* Since: 0.10.31
**/
g_object_class_install_property (gobject_class, PROP_FOREGROUND_COLOR,
g_param_spec_uint ("foreground-color", "Foreground Color",
"Foreground color to use (big-endian ARGB)", 0, G_MAXUINT32,
DEFAULT_FOREGROUND_COLOR,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/**
* GstVideoTestSrc:background-color
*
* Color to use for background color of some patterns. Default is
* black (0xff000000).
*
* Since: 0.10.31
**/
g_object_class_install_property (gobject_class, PROP_BACKGROUND_COLOR,
g_param_spec_uint ("background-color", "Background Color",
"Background color to use (big-endian ARGB)", 0, G_MAXUINT32,
DEFAULT_BACKGROUND_COLOR,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_HORIZONTAL_SPEED,
g_param_spec_int ("horizontal-speed", "Horizontal Speed",
"Scroll image number of pixels per frame (positive is scroll to the left)",
G_MININT32, G_MAXINT32, DEFAULT_HORIZONTAL_SPEED,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
gst_element_class_set_static_metadata (gstelement_class,
"Video test source", "Source/Video",
"Creates a test video stream", "David A. Schleef <ds@schleef.org>");
templ_caps = gst_video_test_src_getcaps (NULL, NULL);
gst_element_class_add_pad_template (gstelement_class,
gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS, templ_caps));
gst_caps_unref (templ_caps);
gstbasesrc_class->get_caps = gst_video_test_src_getcaps;
gstbasesrc_class->set_caps = gst_video_test_src_setcaps;
gstbasesrc_class->fixate = gst_video_test_src_src_fixate;
gstbasesrc_class->is_seekable = gst_video_test_src_is_seekable;
gstbasesrc_class->do_seek = gst_video_test_src_do_seek;
gstbasesrc_class->query = gst_video_test_src_query;
gstbasesrc_class->get_times = gst_video_test_src_get_times;
gstbasesrc_class->start = gst_video_test_src_start;
gstbasesrc_class->stop = gst_video_test_src_stop;
gstbasesrc_class->decide_allocation = gst_video_test_src_decide_allocation;
gstpushsrc_class->fill = gst_video_test_src_fill;
}
static void
gst_video_test_src_init (GstVideoTestSrc * src)
{
gst_video_test_src_set_pattern (src, DEFAULT_PATTERN);
src->timestamp_offset = DEFAULT_TIMESTAMP_OFFSET;
src->foreground_color = DEFAULT_FOREGROUND_COLOR;
src->background_color = DEFAULT_BACKGROUND_COLOR;
src->horizontal_speed = DEFAULT_HORIZONTAL_SPEED;
/* we operate in time */
gst_base_src_set_format (GST_BASE_SRC (src), GST_FORMAT_TIME);
gst_base_src_set_live (GST_BASE_SRC (src), DEFAULT_IS_LIVE);
}
static GstCaps *
gst_video_test_src_src_fixate (GstBaseSrc * bsrc, GstCaps * caps)
{
GstStructure *structure;
caps = gst_caps_make_writable (caps);
structure = gst_caps_get_structure (caps, 0);
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);
if (gst_structure_has_field (structure, "pixel-aspect-ratio"))
gst_structure_fixate_field_nearest_fraction (structure,
"pixel-aspect-ratio", 1, 1);
if (gst_structure_has_field (structure, "colorimetry"))
gst_structure_fixate_field_string (structure, "colorimetry", "bt601");
if (gst_structure_has_field (structure, "chroma-site"))
gst_structure_fixate_field_string (structure, "chroma-site", "mpeg2");
if (gst_structure_has_field (structure, "interlaced"))
gst_structure_fixate_field_boolean (structure, "interlaced", FALSE);
caps = GST_BASE_SRC_CLASS (parent_class)->fixate (bsrc, caps);
return caps;
}
static void
gst_video_test_src_set_pattern (GstVideoTestSrc * videotestsrc,
int pattern_type)
{
videotestsrc->pattern_type = pattern_type;
GST_DEBUG_OBJECT (videotestsrc, "setting pattern to %d", pattern_type);
switch (pattern_type) {
case GST_VIDEO_TEST_SRC_SMPTE:
videotestsrc->make_image = gst_video_test_src_smpte;
break;
case GST_VIDEO_TEST_SRC_SNOW:
videotestsrc->make_image = gst_video_test_src_snow;
break;
case GST_VIDEO_TEST_SRC_BLACK:
videotestsrc->make_image = gst_video_test_src_black;
break;
case GST_VIDEO_TEST_SRC_WHITE:
videotestsrc->make_image = gst_video_test_src_white;
break;
case GST_VIDEO_TEST_SRC_RED:
videotestsrc->make_image = gst_video_test_src_red;
break;
case GST_VIDEO_TEST_SRC_GREEN:
videotestsrc->make_image = gst_video_test_src_green;
break;
case GST_VIDEO_TEST_SRC_BLUE:
videotestsrc->make_image = gst_video_test_src_blue;
break;
case GST_VIDEO_TEST_SRC_CHECKERS1:
videotestsrc->make_image = gst_video_test_src_checkers1;
break;
case GST_VIDEO_TEST_SRC_CHECKERS2:
videotestsrc->make_image = gst_video_test_src_checkers2;
break;
case GST_VIDEO_TEST_SRC_CHECKERS4:
videotestsrc->make_image = gst_video_test_src_checkers4;
break;
case GST_VIDEO_TEST_SRC_CHECKERS8:
videotestsrc->make_image = gst_video_test_src_checkers8;
break;
case GST_VIDEO_TEST_SRC_CIRCULAR:
videotestsrc->make_image = gst_video_test_src_circular;
break;
case GST_VIDEO_TEST_SRC_BLINK:
videotestsrc->make_image = gst_video_test_src_blink;
break;
case GST_VIDEO_TEST_SRC_SMPTE75:
videotestsrc->make_image = gst_video_test_src_smpte75;
break;
case GST_VIDEO_TEST_SRC_ZONE_PLATE:
videotestsrc->make_image = gst_video_test_src_zoneplate;
break;
case GST_VIDEO_TEST_SRC_GAMUT:
videotestsrc->make_image = gst_video_test_src_gamut;
break;
case GST_VIDEO_TEST_SRC_CHROMA_ZONE_PLATE:
videotestsrc->make_image = gst_video_test_src_chromazoneplate;
break;
case GST_VIDEO_TEST_SRC_SOLID:
videotestsrc->make_image = gst_video_test_src_solid;
break;
case GST_VIDEO_TEST_SRC_BALL:
videotestsrc->make_image = gst_video_test_src_ball;
break;
case GST_VIDEO_TEST_SRC_SMPTE100:
videotestsrc->make_image = gst_video_test_src_smpte100;
break;
case GST_VIDEO_TEST_SRC_BAR:
videotestsrc->make_image = gst_video_test_src_bar;
break;
default:
g_assert_not_reached ();
}
}
static void
gst_video_test_src_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstVideoTestSrc *src = GST_VIDEO_TEST_SRC (object);
switch (prop_id) {
case PROP_PATTERN:
gst_video_test_src_set_pattern (src, g_value_get_enum (value));
break;
case PROP_TIMESTAMP_OFFSET:
src->timestamp_offset = g_value_get_int64 (value);
break;
case PROP_IS_LIVE:
gst_base_src_set_live (GST_BASE_SRC (src), g_value_get_boolean (value));
break;
case PROP_K0:
src->k0 = g_value_get_int (value);
break;
case PROP_KX:
src->kx = g_value_get_int (value);
break;
case PROP_KY:
src->ky = g_value_get_int (value);
break;
case PROP_KT:
src->kt = g_value_get_int (value);
break;
case PROP_KXT:
src->kxt = g_value_get_int (value);
break;
case PROP_KYT:
src->kyt = g_value_get_int (value);
break;
case PROP_KXY:
src->kxy = g_value_get_int (value);
break;
case PROP_KX2:
src->kx2 = g_value_get_int (value);
break;
case PROP_KY2:
src->ky2 = g_value_get_int (value);
break;
case PROP_KT2:
src->kt2 = g_value_get_int (value);
break;
case PROP_XOFFSET:
src->xoffset = g_value_get_int (value);
break;
case PROP_YOFFSET:
src->yoffset = g_value_get_int (value);
break;
case PROP_FOREGROUND_COLOR:
src->foreground_color = g_value_get_uint (value);
break;
case PROP_BACKGROUND_COLOR:
src->background_color = g_value_get_uint (value);
break;
case PROP_HORIZONTAL_SPEED:
src->horizontal_speed = g_value_get_int (value);
default:
break;
}
}
static void
gst_video_test_src_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstVideoTestSrc *src = GST_VIDEO_TEST_SRC (object);
switch (prop_id) {
case PROP_PATTERN:
g_value_set_enum (value, src->pattern_type);
break;
case PROP_TIMESTAMP_OFFSET:
g_value_set_int64 (value, src->timestamp_offset);
break;
case PROP_IS_LIVE:
g_value_set_boolean (value, gst_base_src_is_live (GST_BASE_SRC (src)));
break;
case PROP_K0:
g_value_set_int (value, src->k0);
break;
case PROP_KX:
g_value_set_int (value, src->kx);
break;
case PROP_KY:
g_value_set_int (value, src->ky);
break;
case PROP_KT:
g_value_set_int (value, src->kt);
break;
case PROP_KXT:
g_value_set_int (value, src->kxt);
break;
case PROP_KYT:
g_value_set_int (value, src->kyt);
break;
case PROP_KXY:
g_value_set_int (value, src->kxy);
break;
case PROP_KX2:
g_value_set_int (value, src->kx2);
break;
case PROP_KY2:
g_value_set_int (value, src->ky2);
break;
case PROP_KT2:
g_value_set_int (value, src->kt2);
break;
case PROP_XOFFSET:
g_value_set_int (value, src->xoffset);
break;
case PROP_YOFFSET:
g_value_set_int (value, src->yoffset);
break;
case PROP_FOREGROUND_COLOR:
g_value_set_uint (value, src->foreground_color);
break;
case PROP_BACKGROUND_COLOR:
g_value_set_uint (value, src->background_color);
break;
case PROP_HORIZONTAL_SPEED:
g_value_set_int (value, src->horizontal_speed);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
/* threadsafe because this gets called as the plugin is loaded */
static GstCaps *
gst_video_test_src_getcaps (GstBaseSrc * bsrc, GstCaps * filter)
{
static GstCaps *capslist = NULL;
if (!capslist) {
GstCaps *caps;
GstStructure *structure;
int i;
caps = gst_caps_new_empty ();
for (i = 0; i < n_formats; i++) {
structure = paint_get_structure (format_list + i);
gst_structure_set (structure,
"width", GST_TYPE_INT_RANGE, 1, G_MAXINT,
"height", GST_TYPE_INT_RANGE, 1, G_MAXINT,
"framerate", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT, 1, NULL);
gst_caps_append_structure (caps, structure);
}
capslist = caps;
}
if (filter)
return gst_caps_intersect_full (filter, capslist, GST_CAPS_INTERSECT_FIRST);
else
return gst_caps_ref (capslist);
}
static gboolean
gst_video_test_src_parse_caps (const GstCaps * caps,
gint * width, gint * height, gint * fps_n, gint * fps_d,
GstVideoColorimetry * colorimetry)
{
const GstStructure *structure;
GstPadLinkReturn ret;
const GValue *framerate;
const gchar *csp;
GST_DEBUG ("parsing caps");
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");
if (framerate) {
*fps_n = gst_value_get_fraction_numerator (framerate);
*fps_d = gst_value_get_fraction_denominator (framerate);
} else
goto no_framerate;
if ((csp = gst_structure_get_string (structure, "colorimetry")))
gst_video_colorimetry_from_string (colorimetry, csp);
return ret;
/* ERRORS */
no_framerate:
{
GST_DEBUG ("videotestsrc no framerate given");
return FALSE;
}
}
static gboolean
gst_video_test_src_decide_allocation (GstBaseSrc * bsrc, GstQuery * query)
{
GstVideoTestSrc *videotestsrc;
GstBufferPool *pool;
gboolean update;
guint size, min, max;
GstStructure *config;
videotestsrc = GST_VIDEO_TEST_SRC (bsrc);
if (gst_query_get_n_allocation_pools (query) > 0) {
gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max);
/* adjust size */
size = MAX (size, videotestsrc->info.size);
update = TRUE;
} else {
pool = NULL;
size = videotestsrc->info.size;
min = max = 0;
update = FALSE;
}
/* no downstream pool, make our own */
if (pool == NULL) {
pool = gst_video_buffer_pool_new ();
}
config = gst_buffer_pool_get_config (pool);
if (gst_query_has_allocation_meta (query, GST_VIDEO_META_API_TYPE)) {
gst_buffer_pool_config_add_option (config,
GST_BUFFER_POOL_OPTION_VIDEO_META);
}
gst_buffer_pool_set_config (pool, config);
if (update)
gst_query_set_nth_allocation_pool (query, 0, pool, size, min, max);
else
gst_query_add_allocation_pool (query, pool, size, min, max);
if (pool)
gst_object_unref (pool);
return GST_BASE_SRC_CLASS (parent_class)->decide_allocation (bsrc, query);
}
static gboolean
gst_video_test_src_setcaps (GstBaseSrc * bsrc, GstCaps * caps)
{
struct format_list_struct *format;
const GstStructure *structure;
GstVideoTestSrc *videotestsrc;
GstVideoInfo info;
videotestsrc = GST_VIDEO_TEST_SRC (bsrc);
structure = gst_caps_get_structure (caps, 0);
if (gst_structure_has_name (structure, "video/x-raw")) {
/* we can use the parsing code */
if (!gst_video_info_from_caps (&info, caps))
goto parse_failed;
} else if (gst_structure_has_name (structure, "video/x-bayer")) {
if (!gst_video_test_src_parse_caps (caps, &info.width, &info.height,
&info.fps_n, &info.fps_d, &info.colorimetry))
goto parse_failed;
info.size =
gst_video_test_src_get_size (videotestsrc, info.width, info.height);
}
if (!(format = paintinfo_find_by_structure (structure)))
goto unknown_format;
/* looks ok here */
videotestsrc->format = format;
videotestsrc->info = info;
GST_DEBUG_OBJECT (videotestsrc, "size %dx%d, %d/%d fps",
info.width, info.height, info.fps_n, info.fps_d);
g_free (videotestsrc->tmpline);
g_free (videotestsrc->tmpline2);
g_free (videotestsrc->tmpline_u8);
videotestsrc->tmpline_u8 = g_malloc (info.width + 8);
videotestsrc->tmpline = g_malloc ((info.width + 8) * 4);
videotestsrc->tmpline2 = g_malloc ((info.width + 8) * 4);
return TRUE;
/* ERRORS */
parse_failed:
{
GST_DEBUG_OBJECT (bsrc, "failed to parse caps");
return FALSE;
}
unknown_format:
{
GST_DEBUG ("videotestsrc format not found");
return FALSE;
}
}
static gboolean
gst_video_test_src_query (GstBaseSrc * bsrc, GstQuery * query)
{
gboolean res;
GstVideoTestSrc *src;
src = GST_VIDEO_TEST_SRC (bsrc);
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_CONVERT:
{
GstFormat src_fmt, dest_fmt;
gint64 src_val, dest_val;
gst_query_parse_convert (query, &src_fmt, &src_val, &dest_fmt, &dest_val);
res =
gst_video_info_convert (&src->info, src_fmt, src_val, dest_fmt,
&dest_val);
gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val);
break;
}
default:
res = GST_BASE_SRC_CLASS (parent_class)->query (bsrc, query);
break;
}
return res;
}
static void
gst_video_test_src_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 gboolean
gst_video_test_src_do_seek (GstBaseSrc * bsrc, GstSegment * segment)
{
GstClockTime position;
GstVideoTestSrc *src;
src = GST_VIDEO_TEST_SRC (bsrc);
segment->time = segment->start;
position = segment->position;
/* now move to the position indicated */
if (src->info.fps_n) {
src->n_frames = gst_util_uint64_scale (position,
src->info.fps_n, src->info.fps_d * GST_SECOND);
} else {
src->n_frames = 0;
}
if (src->info.fps_n) {
src->running_time = gst_util_uint64_scale (src->n_frames,
src->info.fps_d * GST_SECOND, src->info.fps_n);
} else {
/* FIXME : Not sure what to set here */
src->running_time = 0;
}
g_assert (src->running_time <= position);
return TRUE;
}
static gboolean
gst_video_test_src_is_seekable (GstBaseSrc * psrc)
{
/* we're seekable... */
return TRUE;
}
static GstFlowReturn
gst_video_test_src_fill (GstPushSrc * psrc, GstBuffer * buffer)
{
GstVideoTestSrc *src;
GstClockTime next_time;
GstVideoFrame frame;
src = GST_VIDEO_TEST_SRC (psrc);
if (G_UNLIKELY (src->format == NULL))
goto not_negotiated;
/* 0 framerate and we are at the second frame, eos */
if (G_UNLIKELY (src->info.fps_n == 0 && src->n_frames == 1))
goto eos;
GST_LOG_OBJECT (src,
"creating buffer from pool for frame %d", (gint) src->n_frames);
if (!gst_video_frame_map (&frame, &src->info, buffer, GST_MAP_WRITE))
goto invalid_frame;
src->make_image (src, &frame);
gst_video_frame_unmap (&frame);
GST_BUFFER_TIMESTAMP (buffer) = src->timestamp_offset + src->running_time;
GST_BUFFER_OFFSET (buffer) = src->n_frames;
src->n_frames++;
GST_BUFFER_OFFSET_END (buffer) = src->n_frames;
if (src->info.fps_n) {
next_time = gst_util_uint64_scale_int (src->n_frames * GST_SECOND,
src->info.fps_d, src->info.fps_n);
GST_BUFFER_DURATION (buffer) = next_time - src->running_time;
} else {
next_time = src->timestamp_offset;
/* NONE means forever */
GST_BUFFER_DURATION (buffer) = GST_CLOCK_TIME_NONE;
}
src->running_time = next_time;
return GST_FLOW_OK;
not_negotiated:
{
GST_ELEMENT_ERROR (src, CORE, NEGOTIATION, (NULL),
("format wasn't negotiated before get function"));
return GST_FLOW_NOT_NEGOTIATED;
}
eos:
{
GST_DEBUG_OBJECT (src, "eos: 0 framerate, frame %d", (gint) src->n_frames);
return GST_FLOW_EOS;
}
invalid_frame:
{
GST_DEBUG_OBJECT (src, "invalid frame");
return GST_FLOW_OK;
}
}
static gboolean
gst_video_test_src_start (GstBaseSrc * basesrc)
{
GstVideoTestSrc *src = GST_VIDEO_TEST_SRC (basesrc);
src->running_time = 0;
src->n_frames = 0;
return TRUE;
}
static gboolean
gst_video_test_src_stop (GstBaseSrc * basesrc)
{
GstVideoTestSrc *src = GST_VIDEO_TEST_SRC (basesrc);
g_free (src->tmpline);
src->tmpline = NULL;
g_free (src->tmpline2);
src->tmpline2 = NULL;
g_free (src->tmpline_u8);
src->tmpline_u8 = NULL;
return TRUE;
}
static gboolean
plugin_init (GstPlugin * plugin)
{
GST_DEBUG_CATEGORY_INIT (video_test_src_debug, "videotestsrc", 0,
"Video Test Source");
return gst_element_register (plugin, "videotestsrc", GST_RANK_NONE,
GST_TYPE_VIDEO_TEST_SRC);
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
videotestsrc,
"Creates a test video stream",
plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)
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