mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-11-08 18:39:54 +00:00
Code Issues 1 Projects Releases Wiki Activity
gstreamer/gst/videotestsrc/gstvideotestsrc.c
David Schleef 173b0758dc videotestsrc: Add color-matrix to caps
2010-03-09 13:11:38 -08:00

873 lines
27 KiB
C
Raw Blame History

/* 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 variaty
* 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 "videotestsrc.h"
#include <string.h>
#include <stdlib.h>
#include <liboil/liboil.h>
GST_DEBUG_CATEGORY_STATIC (video_test_src_debug);
#define GST_CAT_DEFAULT video_test_src_debug
static const GstElementDetails video_test_src_details =
GST_ELEMENT_DETAILS ("Video test source",
"Source/Video",
"Creates a test video stream",
"David A. Schleef <ds@schleef.org>");
#define DEFAULT_PATTERN GST_VIDEO_TEST_SRC_SMPTE
#define DEFAULT_TIMESTAMP_OFFSET 0
#define DEFAULT_IS_LIVE FALSE
#define DEFAULT_PEER_ALLOC TRUE
#define DEFAULT_COLOR_SPEC GST_VIDEO_TEST_SRC_BT601
enum
{
PROP_0,
PROP_PATTERN,
PROP_TIMESTAMP_OFFSET,
PROP_IS_LIVE,
PROP_PEER_ALLOC,
PROP_COLOR_SPEC,
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_LAST
};
GST_BOILERPLATE (GstVideoTestSrc, gst_video_test_src, GstPushSrc,
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);
static gboolean gst_video_test_src_setcaps (GstBaseSrc * bsrc, GstCaps * caps);
static void gst_video_test_src_src_fixate (GstPad * pad, 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 GstFlowReturn gst_video_test_src_create (GstPushSrc * psrc,
GstBuffer ** buffer);
static gboolean gst_video_test_src_start (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"},
{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;
}
#define GST_TYPE_VIDEO_TEST_SRC_COLOR_SPEC (gst_video_test_src_color_spec_get_type ())
static GType
gst_video_test_src_color_spec_get_type (void)
{
static GType video_test_src_color_spec_type = 0;
static const GEnumValue color_spec_types[] = {
{GST_VIDEO_TEST_SRC_BT601, "ITU-R Rec. BT.601", "bt601"},
{GST_VIDEO_TEST_SRC_BT709, "ITU-R Rec. BT.709", "bt709"},
{0, NULL, NULL}
};
if (!video_test_src_color_spec_type) {
video_test_src_color_spec_type =
g_enum_register_static ("GstVideoTestSrcColorSpec", color_spec_types);
}
return video_test_src_color_spec_type;
}
static void
gst_video_test_src_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_set_details (element_class, &video_test_src_details);
gst_element_class_add_pad_template (element_class,
gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS,
gst_video_test_src_getcaps (NULL)));
}
static void
gst_video_test_src_class_init (GstVideoTestSrcClass * klass)
{
GObjectClass *gobject_class;
GstBaseSrcClass *gstbasesrc_class;
GstPushSrcClass *gstpushsrc_class;
gobject_class = (GObjectClass *) 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_PEER_ALLOC,
g_param_spec_boolean ("peer-alloc", "Peer Alloc",
"Ask the peer to allocate an output buffer", DEFAULT_PEER_ALLOC,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_COLOR_SPEC,
g_param_spec_enum ("colorspec", "Color Specification",
"Generate video in the given color specification",
GST_TYPE_VIDEO_TEST_SRC_COLOR_SPEC,
DEFAULT_COLOR_SPEC, 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*t 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));
gstbasesrc_class->get_caps = gst_video_test_src_getcaps;
gstbasesrc_class->set_caps = gst_video_test_src_setcaps;
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;
gstpushsrc_class->create = gst_video_test_src_create;
}
static void
gst_video_test_src_init (GstVideoTestSrc * src, GstVideoTestSrcClass * g_class)
{
GstPad *pad = GST_BASE_SRC_PAD (src);
gst_pad_set_fixatecaps_function (pad, gst_video_test_src_src_fixate);
gst_video_test_src_set_pattern (src, DEFAULT_PATTERN);
src->timestamp_offset = DEFAULT_TIMESTAMP_OFFSET;
/* 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);
src->peer_alloc = DEFAULT_PEER_ALLOC;
}
static void
gst_video_test_src_src_fixate (GstPad * pad, GstCaps * caps)
{
GstStructure *structure;
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);
}
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_black;
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;
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_PEER_ALLOC:
src->peer_alloc = g_value_get_boolean (value);
break;
case PROP_COLOR_SPEC:
src->color_spec = g_value_get_enum (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;
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_PEER_ALLOC:
g_value_set_boolean (value, src->peer_alloc);
break;
case PROP_COLOR_SPEC:
g_value_set_enum (value, src->color_spec);
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;
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)
{
static GstCaps *capslist = NULL;
if (!capslist) {
GstCaps *caps;
GstStructure *structure;
int i;
caps = gst_caps_new_empty ();
for (i = 0; i < n_fourccs; i++) {
structure = paint_get_structure (fourcc_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;
}
return gst_caps_copy (capslist);
}
static gboolean
gst_video_test_src_parse_caps (const GstCaps * caps,
gint * width, gint * height, gint * rate_numerator, gint * rate_denominator,
struct fourcc_list_struct **fourcc, GstVideoTestSrcColorSpec * color_spec)
{
const GstStructure *structure;
GstPadLinkReturn ret;
const GValue *framerate;
const char *csp;
GST_DEBUG ("parsing caps");
if (gst_caps_get_size (caps) < 1)
return FALSE;
structure = gst_caps_get_structure (caps, 0);
if (!(*fourcc = paintinfo_find_by_structure (structure)))
goto unknown_format;
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) {
*rate_numerator = gst_value_get_fraction_numerator (framerate);
*rate_denominator = gst_value_get_fraction_denominator (framerate);
} else
goto no_framerate;
csp = gst_structure_get_string (structure, "color-matrix");
if (csp) {
if (strcmp (csp, "sdtv") == 0) {
*color_spec = GST_VIDEO_TEST_SRC_BT601;
} else if (strcmp (csp, "hdtv") == 0) {
*color_spec = GST_VIDEO_TEST_SRC_BT709;
} else {
GST_DEBUG ("unknown color-matrix");
return FALSE;
}
} else {
*color_spec = GST_VIDEO_TEST_SRC_BT601;
}
return ret;
/* ERRORS */
unknown_format:
{
GST_DEBUG ("videotestsrc format not found");
return FALSE;
}
no_framerate:
{
GST_DEBUG ("videotestsrc no framerate given");
return FALSE;
}
}
static gboolean
gst_video_test_src_setcaps (GstBaseSrc * bsrc, GstCaps * caps)
{
gboolean res;
gint width, height, rate_denominator, rate_numerator;
struct fourcc_list_struct *fourcc;
GstVideoTestSrc *videotestsrc;
GstVideoTestSrcColorSpec color_spec;
videotestsrc = GST_VIDEO_TEST_SRC (bsrc);
res = gst_video_test_src_parse_caps (caps, &width, &height,
&rate_numerator, &rate_denominator, &fourcc, &color_spec);
if (res) {
/* looks ok here */
videotestsrc->fourcc = fourcc;
videotestsrc->width = width;
videotestsrc->height = height;
videotestsrc->rate_numerator = rate_numerator;
videotestsrc->rate_denominator = rate_denominator;
videotestsrc->bpp = videotestsrc->fourcc->bitspp;
videotestsrc->color_spec = color_spec;
GST_DEBUG_OBJECT (videotestsrc, "size %dx%d, %d/%d fps",
videotestsrc->width, videotestsrc->height,
videotestsrc->rate_numerator, videotestsrc->rate_denominator);
}
return res;
}
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);
if (src_fmt == dest_fmt) {
dest_val = src_val;
goto done;
}
switch (src_fmt) {
case GST_FORMAT_DEFAULT:
switch (dest_fmt) {
case GST_FORMAT_TIME:
/* frames to time */
if (src->rate_numerator) {
dest_val = gst_util_uint64_scale (src_val,
src->rate_denominator * GST_SECOND, src->rate_numerator);
} else {
dest_val = 0;
}
break;
default:
goto error;
}
break;
case GST_FORMAT_TIME:
switch (dest_fmt) {
case GST_FORMAT_DEFAULT:
/* time to frames */
if (src->rate_numerator) {
dest_val = gst_util_uint64_scale (src_val,
src->rate_numerator, src->rate_denominator * GST_SECOND);
} else {
dest_val = 0;
}
break;
default:
goto error;
}
break;
default:
goto error;
}
done:
gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val);
res = TRUE;
break;
}
default:
res = GST_BASE_SRC_CLASS (parent_class)->query (bsrc, query);
}
return res;
/* ERROR */
error:
{
GST_DEBUG_OBJECT (src, "query failed");
return FALSE;
}
}
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 time;
GstVideoTestSrc *src;
src = GST_VIDEO_TEST_SRC (bsrc);
segment->time = segment->start;
time = segment->last_stop;
/* now move to the time indicated */
if (src->rate_numerator) {
src->n_frames = gst_util_uint64_scale (time,
src->rate_numerator, src->rate_denominator * GST_SECOND);
} else {
src->n_frames = 0;
}
if (src->rate_numerator) {
src->running_time = gst_util_uint64_scale (src->n_frames,
src->rate_denominator * GST_SECOND, src->rate_numerator);
} else {
/* FIXME : Not sure what to set here */
src->running_time = 0;
}
g_assert (src->running_time <= time);
return TRUE;
}
static gboolean
gst_video_test_src_is_seekable (GstBaseSrc * psrc)
{
/* we're seekable... */
return TRUE;
}
static GstFlowReturn
gst_video_test_src_create (GstPushSrc * psrc, GstBuffer ** buffer)
{
GstVideoTestSrc *src;
gulong newsize, size;
GstBuffer *outbuf = NULL;
GstFlowReturn res;
GstClockTime next_time;
src = GST_VIDEO_TEST_SRC (psrc);
if (G_UNLIKELY (src->fourcc == NULL))
goto not_negotiated;
/* 0 framerate and we are at the second frame, eos */
if (G_UNLIKELY (src->rate_numerator == 0 && src->n_frames == 1))
goto eos;
newsize = gst_video_test_src_get_size (src, src->width, src->height);
g_return_val_if_fail (newsize > 0, GST_FLOW_ERROR);
GST_LOG_OBJECT (src,
"creating buffer of %lu bytes with %dx%d image for frame %d", newsize,
src->width, src->height, (gint) src->n_frames);
if (src->peer_alloc) {
res =
gst_pad_alloc_buffer_and_set_caps (GST_BASE_SRC_PAD (psrc),
GST_BUFFER_OFFSET_NONE, newsize, GST_PAD_CAPS (GST_BASE_SRC_PAD (psrc)),
&outbuf);
if (res != GST_FLOW_OK)
goto no_buffer;
/* the buffer could have renegotiated, we need to discard any buffers of the
* wrong size. */
size = GST_BUFFER_SIZE (outbuf);
newsize = gst_video_test_src_get_size (src, src->width, src->height);
if (size != newsize) {
gst_buffer_unref (outbuf);
outbuf = NULL;
}
}
if (outbuf == NULL) {
outbuf = gst_buffer_new_and_alloc (newsize);
gst_buffer_set_caps (outbuf, GST_PAD_CAPS (GST_BASE_SRC_PAD (psrc)));
}
memset (GST_BUFFER_DATA (outbuf), 0, GST_BUFFER_SIZE (outbuf));
if (src->pattern_type == GST_VIDEO_TEST_SRC_BLINK) {
if (src->n_frames & 0x1) {
gst_video_test_src_white (src, (void *) GST_BUFFER_DATA (outbuf),
src->width, src->height);
} else {
gst_video_test_src_black (src, (void *) GST_BUFFER_DATA (outbuf),
src->width, src->height);
}
} else {
src->make_image (src, (void *) GST_BUFFER_DATA (outbuf),
src->width, src->height);
}
GST_BUFFER_TIMESTAMP (outbuf) = src->timestamp_offset + src->running_time;
GST_BUFFER_OFFSET (outbuf) = src->n_frames;
src->n_frames++;
GST_BUFFER_OFFSET_END (outbuf) = src->n_frames;
if (src->rate_numerator) {
next_time = gst_util_uint64_scale_int (src->n_frames * GST_SECOND,
src->rate_denominator, src->rate_numerator);
GST_BUFFER_DURATION (outbuf) = next_time - src->running_time;
} else {
next_time = src->timestamp_offset;
/* NONE means forever */
GST_BUFFER_DURATION (outbuf) = GST_CLOCK_TIME_NONE;
}
src->running_time = next_time;
*buffer = outbuf;
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_UNEXPECTED;
}
no_buffer:
{
GST_DEBUG_OBJECT (src, "could not allocate buffer, reason %s",
gst_flow_get_name (res));
return res;
}
}
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
plugin_init (GstPlugin * plugin)
{
oil_init ();
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)
Reference in a new issue View git blame Copy permalink