gstreamer/gst/gl/gstgltestsrc.c
2014-03-15 18:36:44 +01:00

675 lines
20 KiB
C

/*
* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
* Copyright (C) 2002,2007 David A. Schleef <ds@schleef.org>
* Copyright (C) 2008 Julien Isorce <julien.isorce@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-gltestsrc
*
* <refsect2>
* <para>
* The gltestsrc element is used to produce test video texture.
* The video test produced can be controlled with the "pattern"
* property.
* </para>
* <title>Example launch line</title>
* <para>
* <programlisting>
* gst-launch -v gltestsrc pattern=smpte ! glimagesink
* </programlisting>
* Shows original SMPTE color bars in a window.
* </para>
* </refsect2>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstgltestsrc.h"
#include "gltestsrc.h"
#include <gst/gst-i18n-plugin.h>
#define USE_PEER_BUFFERALLOC
GST_DEBUG_CATEGORY_STATIC (gl_test_src_debug);
#define GST_CAT_DEFAULT gl_test_src_debug
enum
{
PROP_0,
PROP_PATTERN,
PROP_TIMESTAMP_OFFSET,
PROP_IS_LIVE
/* FILL ME */
};
#define gst_gl_test_src_parent_class parent_class
G_DEFINE_TYPE (GstGLTestSrc, gst_gl_test_src, GST_TYPE_PUSH_SRC);
static void gst_gl_test_src_set_pattern (GstGLTestSrc * gltestsrc,
int pattern_type);
static void gst_gl_test_src_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_gl_test_src_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static gboolean gst_gl_test_src_src_query (GstPad * pad, GstObject * object,
GstQuery * query);
static gboolean gst_gl_test_src_setcaps (GstBaseSrc * bsrc, GstCaps * caps);
static GstCaps *gst_gl_test_src_fixate (GstBaseSrc * bsrc, GstCaps * caps);
static gboolean gst_gl_test_src_is_seekable (GstBaseSrc * psrc);
static gboolean gst_gl_test_src_do_seek (GstBaseSrc * bsrc,
GstSegment * segment);
static gboolean gst_gl_test_src_query (GstBaseSrc * bsrc, GstQuery * query);
static void gst_gl_test_src_get_times (GstBaseSrc * basesrc,
GstBuffer * buffer, GstClockTime * start, GstClockTime * end);
static GstFlowReturn gst_gl_test_src_create (GstPushSrc * psrc,
GstBuffer ** buffer);
static gboolean gst_gl_test_src_start (GstBaseSrc * basesrc);
static gboolean gst_gl_test_src_stop (GstBaseSrc * basesrc);
/*static void gst_gl_test_src_callback (gint width, gint height, guint texture,
gpointer stuff); */
#define GST_TYPE_GL_TEST_SRC_PATTERN (gst_gl_test_src_pattern_get_type ())
static GType
gst_gl_test_src_pattern_get_type (void)
{
static GType gl_test_src_pattern_type = 0;
static const GEnumValue pattern_types[] = {
{GST_GL_TEST_SRC_SMPTE, "SMPTE 100% color bars", "smpte"},
{GST_GL_TEST_SRC_SNOW, "Random (television snow)", "snow"},
{GST_GL_TEST_SRC_BLACK, "100% Black", "black"},
{GST_GL_TEST_SRC_WHITE, "100% White", "white"},
{GST_GL_TEST_SRC_RED, "Red", "red"},
{GST_GL_TEST_SRC_GREEN, "Green", "green"},
{GST_GL_TEST_SRC_BLUE, "Blue", "blue"},
{GST_GL_TEST_SRC_CHECKERS1, "Checkers 1px", "checkers-1"},
{GST_GL_TEST_SRC_CHECKERS2, "Checkers 2px", "checkers-2"},
{GST_GL_TEST_SRC_CHECKERS4, "Checkers 4px", "checkers-4"},
{GST_GL_TEST_SRC_CHECKERS8, "Checkers 8px", "checkers-8"},
{GST_GL_TEST_SRC_CIRCULAR, "Circular", "circular"},
{GST_GL_TEST_SRC_BLINK, "Blink", "blink"},
{0, NULL, NULL}
};
if (!gl_test_src_pattern_type) {
gl_test_src_pattern_type =
g_enum_register_static ("GstGLTestSrcPattern", pattern_types);
}
return gl_test_src_pattern_type;
}
static void
gst_gl_test_src_class_init (GstGLTestSrcClass * klass)
{
GObjectClass *gobject_class;
GstBaseSrcClass *gstbasesrc_class;
GstPushSrcClass *gstpushsrc_class;
GstElementClass *element_class;
GST_DEBUG_CATEGORY_INIT (gl_test_src_debug, "gltestsrc", 0,
"Video Test Source");
gobject_class = (GObjectClass *) klass;
gstbasesrc_class = (GstBaseSrcClass *) klass;
gstpushsrc_class = (GstPushSrcClass *) klass;
element_class = GST_ELEMENT_CLASS (klass);
gobject_class->set_property = gst_gl_test_src_set_property;
gobject_class->get_property = gst_gl_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_GL_TEST_SRC_PATTERN,
GST_GL_TEST_SRC_SMPTE, 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", FALSE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
gst_element_class_set_details_simple (element_class, "Video test source",
"Source/Video", "Creates a test video stream",
"David A. Schleef <ds@schleef.org>");
gst_element_class_add_pad_template (element_class,
gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS,
gst_caps_from_string (GST_GL_VIDEO_CAPS)));
gstbasesrc_class->set_caps = gst_gl_test_src_setcaps;
gstbasesrc_class->is_seekable = gst_gl_test_src_is_seekable;
gstbasesrc_class->do_seek = gst_gl_test_src_do_seek;
gstbasesrc_class->query = gst_gl_test_src_query;
gstbasesrc_class->get_times = gst_gl_test_src_get_times;
gstbasesrc_class->start = gst_gl_test_src_start;
gstbasesrc_class->stop = gst_gl_test_src_stop;
gstbasesrc_class->fixate = gst_gl_test_src_fixate;
gstpushsrc_class->create = gst_gl_test_src_create;
}
static void
gst_gl_test_src_init (GstGLTestSrc * src)
{
GstPad *pad = GST_BASE_SRC_PAD (src);
gst_gl_test_src_set_pattern (src, GST_GL_TEST_SRC_SMPTE);
src->timestamp_offset = 0;
/* 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), FALSE);
gst_pad_set_query_function (pad,
GST_DEBUG_FUNCPTR (gst_gl_test_src_src_query));
}
static GstCaps *
gst_gl_test_src_fixate (GstBaseSrc * bsrc, GstCaps * caps)
{
GstStructure *structure;
GST_DEBUG ("fixate");
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);
return caps;
}
static void
gst_gl_test_src_set_pattern (GstGLTestSrc * gltestsrc, gint pattern_type)
{
gltestsrc->pattern_type = pattern_type;
GST_DEBUG_OBJECT (gltestsrc, "setting pattern to %d", pattern_type);
switch (pattern_type) {
case GST_GL_TEST_SRC_SMPTE:
gltestsrc->make_image = gst_gl_test_src_smpte;
break;
case GST_GL_TEST_SRC_SNOW:
gltestsrc->make_image = gst_gl_test_src_snow;
break;
case GST_GL_TEST_SRC_BLACK:
gltestsrc->make_image = gst_gl_test_src_black;
break;
case GST_GL_TEST_SRC_WHITE:
gltestsrc->make_image = gst_gl_test_src_white;
break;
case GST_GL_TEST_SRC_RED:
gltestsrc->make_image = gst_gl_test_src_red;
break;
case GST_GL_TEST_SRC_GREEN:
gltestsrc->make_image = gst_gl_test_src_green;
break;
case GST_GL_TEST_SRC_BLUE:
gltestsrc->make_image = gst_gl_test_src_blue;
break;
case GST_GL_TEST_SRC_CHECKERS1:
gltestsrc->make_image = gst_gl_test_src_checkers1;
break;
case GST_GL_TEST_SRC_CHECKERS2:
gltestsrc->make_image = gst_gl_test_src_checkers2;
break;
case GST_GL_TEST_SRC_CHECKERS4:
gltestsrc->make_image = gst_gl_test_src_checkers4;
break;
case GST_GL_TEST_SRC_CHECKERS8:
gltestsrc->make_image = gst_gl_test_src_checkers8;
break;
case GST_GL_TEST_SRC_CIRCULAR:
gltestsrc->make_image = gst_gl_test_src_circular;
break;
case GST_GL_TEST_SRC_BLINK:
gltestsrc->make_image = gst_gl_test_src_black;
break;
default:
g_assert_not_reached ();
}
}
static void
gst_gl_test_src_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstGLTestSrc *src = GST_GL_TEST_SRC (object);
switch (prop_id) {
case PROP_PATTERN:
gst_gl_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;
default:
break;
}
}
static void
gst_gl_test_src_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstGLTestSrc *src = GST_GL_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;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static gboolean
gst_gl_test_src_src_query (GstPad * pad, GstObject * object, GstQuery * query)
{
gboolean res;
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_CUSTOM:
{
const GstStructure *structure = gst_query_get_structure (query);
res =
g_strcmp0 (gst_element_get_name (object),
gst_structure_get_name (structure)) == 0;
break;
}
default:
res = gst_pad_query_default (pad, object, query);
break;
}
return res;
}
static gboolean
gst_gl_test_src_parse_caps (const GstCaps * caps,
gint * width, gint * height, gint * rate_numerator, gint * rate_denominator)
{
const GstStructure *structure;
GstPadLinkReturn ret;
const GValue *framerate;
GST_DEBUG ("parsing caps");
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");
if (framerate) {
*rate_numerator = gst_value_get_fraction_numerator (framerate);
*rate_denominator = gst_value_get_fraction_denominator (framerate);
} else
goto no_framerate;
return ret;
/* ERRORS */
no_framerate:
{
GST_DEBUG ("gltestsrc no framerate given");
return FALSE;
}
}
static gboolean
gst_gl_test_src_setcaps (GstBaseSrc * bsrc, GstCaps * caps)
{
gboolean res = FALSE;
gint width, height, rate_denominator, rate_numerator;
GstGLTestSrc *gltestsrc = GST_GL_TEST_SRC (bsrc);
GST_DEBUG ("setcaps");
res = gst_gl_test_src_parse_caps (caps, &width, &height,
&rate_numerator, &rate_denominator);
if (res) {
/* looks ok here */
gltestsrc->width = width;
gltestsrc->height = height;
gltestsrc->rate_numerator = rate_numerator;
gltestsrc->rate_denominator = rate_denominator;
gltestsrc->negotiated = TRUE;
GST_DEBUG_OBJECT (gltestsrc, "size %dx%d, %d/%d fps",
gltestsrc->width, gltestsrc->height,
gltestsrc->rate_numerator, gltestsrc->rate_denominator);
res = gst_gl_display_gen_fbo (gltestsrc->display, gltestsrc->width,
gltestsrc->height, &gltestsrc->fbo, &gltestsrc->depthbuffer);
if (!res)
GST_ELEMENT_ERROR (gltestsrc, RESOURCE, NOT_FOUND,
GST_GL_DISPLAY_ERR_MSG (gltestsrc->display), (NULL));
}
return res;
}
static gboolean
gst_gl_test_src_query (GstBaseSrc * bsrc, GstQuery * query)
{
gboolean res;
GstGLTestSrc *src;
src = GST_GL_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_gl_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_gl_test_src_do_seek (GstBaseSrc * bsrc, GstSegment * segment)
{
GstClockTime time;
GstGLTestSrc *src;
src = GST_GL_TEST_SRC (bsrc);
segment->time = segment->start;
time = segment->position;
/* 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_return_val_if_fail (src->running_time <= time, FALSE);
return TRUE;
}
static gboolean
gst_gl_test_src_is_seekable (GstBaseSrc * psrc)
{
/* we're seekable... */
return TRUE;
}
static GstFlowReturn
gst_gl_test_src_create (GstPushSrc * psrc, GstBuffer ** buffer)
{
GstGLTestSrc *src;
//GstFlowReturn res;
GstClockTime next_time;
src = GST_GL_TEST_SRC (psrc);
if (G_UNLIKELY (!src->negotiated))
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;
GST_LOG_OBJECT (src, "creating buffer %dx%d image for frame %d",
src->width, src->height, (gint) src->n_frames);
/*outbuf = gst_gl_buffer_new (src->display, src->width, src->height);
if (!outbuf->texture) {
goto eos;
}
gst_buffer_set_caps (GST_BUFFER (outbuf),
gst_pad_get_negotiated_caps (GST_BASE_SRC_PAD (psrc)));
*/
if (src->pattern_type == GST_GL_TEST_SRC_BLINK) {
if (src->n_frames & 0x1)
src->make_image = gst_gl_test_src_white;
else
src->make_image = gst_gl_test_src_black;
}
src->buffer = gst_buffer_ref (*buffer);
/* FIXME: use GstGLMeta
//blocking call, generate a FBO
if (!gst_gl_display_use_fbo (src->display, src->width, src->height, src->fbo, src->depthbuffer, outbuf->texture, gst_gl_test_src_callback, 0, 0, 0, //no input texture
0, src->width, 0, src->height,
GST_GL_DISPLAY_PROJECTION_ORTHO2D, (gpointer) src)) {
goto eos;
} */
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->rate_numerator) {
next_time = gst_util_uint64_scale_int (src->n_frames * GST_SECOND,
src->rate_denominator, src->rate_numerator);
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;
}
}
static gboolean
gst_gl_test_src_start (GstBaseSrc * basesrc)
{
GstGLTestSrc *src = GST_GL_TEST_SRC (basesrc);
GstElement *parent = GST_ELEMENT (gst_element_get_parent (src));
GstStructure *structure = NULL;
GstQuery *query = NULL;
gboolean isPerformed = FALSE;
if (!parent) {
GST_ELEMENT_ERROR (src, CORE, STATE_CHANGE, (NULL),
("A parent bin is required"));
return FALSE;
}
structure = gst_structure_new_empty (gst_element_get_name (src));
query = gst_query_new_custom (GST_QUERY_CUSTOM, structure);
isPerformed = gst_element_query (parent, query);
if (isPerformed) {
const GValue *id_value =
gst_structure_get_value (structure, "gstgldisplay");
if (G_VALUE_HOLDS_POINTER (id_value))
/* at least one gl element is before in our gl chain */
src->display =
g_object_ref (GST_GL_DISPLAY (g_value_get_pointer (id_value)));
else {
/* this gl filter is a sink in terms of the gl chain */
src->display = gst_gl_display_new ();
isPerformed = gst_gl_display_create_context (src->display, 0);
if (!isPerformed)
GST_ELEMENT_ERROR (src, RESOURCE, NOT_FOUND,
GST_GL_DISPLAY_ERR_MSG (src->display), (NULL));
}
}
gst_query_unref (query);
gst_object_unref (GST_OBJECT (parent));
src->running_time = 0;
src->n_frames = 0;
src->negotiated = FALSE;
return isPerformed;
}
static gboolean
gst_gl_test_src_stop (GstBaseSrc * basesrc)
{
GstGLTestSrc *src = GST_GL_TEST_SRC (basesrc);
if (src->display) {
//blocking call, delete the FBO
gst_gl_display_del_fbo (src->display, src->fbo, src->depthbuffer);
g_object_unref (src->display);
src->display = NULL;
}
return TRUE;
}
//opengl scene
/*static void
gst_gl_test_src_callback (gint width, gint height, guint texture,
gpointer stuff)
{
GstGLTestSrc *src = GST_GL_TEST_SRC (stuff);
src->make_image (src, src->buffer, src->width, src->height);
} */