mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-15 12:56:33 +00:00
e6823576ce
-Waggregate-return: used by some Qt clases extensively and not super useful for this example. Supress it. warning: "GL_GLEXT_VERSION" redefined: Perform the same workaround as qmlglsink by defining the old gl/GL.h header guard if the new GL/gl.h guard exists. Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-base/-/merge_requests/752>
342 lines
10 KiB
C++
342 lines
10 KiB
C++
/*
|
|
* GStreamer
|
|
* Copyright (C) 2008-2009 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., 51 Franklin St, Fifth Floor,
|
|
* Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#include <gst/video/videooverlay.h>
|
|
#include <gst/video/video.h>
|
|
#include <GL/gl.h>
|
|
#include "../gl-compat-defines.h"
|
|
#include "pipeline.h"
|
|
|
|
#define GST_MAP_GL (GST_MAP_FLAG_LAST << 1)
|
|
|
|
Pipeline::Pipeline(const WId id, const QString videoLocation):
|
|
m_winId(id),
|
|
m_videoLocation(videoLocation),
|
|
m_loop(NULL),
|
|
m_bus(NULL),
|
|
m_pipeline(NULL),
|
|
m_glimagesink(NULL)
|
|
{
|
|
create();
|
|
}
|
|
|
|
Pipeline::~Pipeline()
|
|
{
|
|
}
|
|
|
|
void Pipeline::create()
|
|
{
|
|
qDebug("Loading video: %s", m_videoLocation.toLatin1().data());
|
|
|
|
gst_init (NULL, NULL);
|
|
|
|
#ifdef WIN32
|
|
m_loop = g_main_loop_new (NULL, FALSE);
|
|
#endif
|
|
m_pipeline = gst_pipeline_new ("pipeline");
|
|
|
|
m_bus = gst_pipeline_get_bus (GST_PIPELINE (m_pipeline));
|
|
gst_bus_add_watch (m_bus, (GstBusFunc) bus_call, this);
|
|
gst_bus_set_sync_handler (m_bus, (GstBusSyncHandler) create_window, this, NULL);
|
|
gst_object_unref (m_bus);
|
|
|
|
GstElement* videosrc = gst_element_factory_make ("filesrc", "filesrc0");
|
|
GstElement* decodebin = gst_element_factory_make ("decodebin", "decodebin0");
|
|
m_glimagesink = gst_element_factory_make ("glimagesink", "sink0");
|
|
|
|
if (!videosrc || !decodebin || !m_glimagesink )
|
|
{
|
|
qDebug ("one element could not be found");
|
|
return;
|
|
}
|
|
|
|
g_object_set(G_OBJECT(videosrc), "num-buffers", 800, NULL);
|
|
g_object_set(G_OBJECT(videosrc), "location", m_videoLocation.toLatin1().data(), NULL);
|
|
g_signal_connect_object (G_OBJECT(m_glimagesink), "client-reshape", (GCallback) reshapeCallback, NULL, G_CONNECT_AFTER);
|
|
g_signal_connect_object (G_OBJECT(m_glimagesink), "client-draw", (GCallback) drawCallback, NULL, G_CONNECT_AFTER);
|
|
|
|
gst_bin_add_many (GST_BIN (m_pipeline), videosrc, decodebin, m_glimagesink, NULL);
|
|
|
|
gst_element_link_pads (videosrc, "src", decodebin, "sink");
|
|
|
|
g_signal_connect (decodebin, "pad-added", G_CALLBACK (cb_new_pad), this);
|
|
}
|
|
|
|
void Pipeline::start()
|
|
{
|
|
GstStateChangeReturn ret = gst_element_set_state (m_pipeline, GST_STATE_PLAYING);
|
|
if (ret == GST_STATE_CHANGE_FAILURE)
|
|
{
|
|
qDebug ("Failed to start up pipeline!");
|
|
|
|
/* check if there is an error message with details on the bus */
|
|
GstMessage* msg = gst_bus_poll (m_bus, GST_MESSAGE_ERROR, 0);
|
|
if (msg)
|
|
{
|
|
GError *err = NULL;
|
|
gst_message_parse_error (msg, &err, NULL);
|
|
qDebug ("ERROR: %s", err->message);
|
|
g_error_free (err);
|
|
gst_message_unref (msg);
|
|
}
|
|
return;
|
|
}
|
|
|
|
#ifdef WIN32
|
|
g_main_loop_run(m_loop);
|
|
#endif
|
|
}
|
|
|
|
//we don't want a thread safe stop in this example
|
|
void Pipeline::stop()
|
|
{
|
|
#ifdef WIN32
|
|
g_main_loop_quit(m_loop);
|
|
#else
|
|
emit stopRequested();
|
|
#endif
|
|
}
|
|
|
|
void Pipeline::unconfigure() const
|
|
{
|
|
gst_element_set_state (m_pipeline, GST_STATE_NULL);
|
|
gst_object_unref (m_pipeline);
|
|
}
|
|
|
|
void Pipeline::show()
|
|
{
|
|
emit showRequested();
|
|
}
|
|
|
|
//redraw the current frame in the drawable
|
|
void Pipeline::doExpose() const
|
|
{
|
|
if (m_pipeline && m_glimagesink)
|
|
gst_video_overlay_expose (GST_VIDEO_OVERLAY (m_glimagesink));
|
|
}
|
|
|
|
//post message to g_main_loop in order to call expose
|
|
//in the gt thread
|
|
void Pipeline::exposeRequested()
|
|
{
|
|
g_idle_add(cb_expose, this);
|
|
}
|
|
|
|
|
|
//-----------------------------------------------------------------------
|
|
//----------------------------- static members --------------------------
|
|
//-----------------------------------------------------------------------
|
|
|
|
//client reshape callback
|
|
gboolean Pipeline::reshapeCallback (GstElement *sink, void *context, guint width, guint height, gpointer data)
|
|
{
|
|
glViewport(0, 0, width, height);
|
|
glMatrixMode(GL_PROJECTION);
|
|
glLoadIdentity();
|
|
glMatrixMode(GL_MODELVIEW);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
//client draw callback
|
|
gboolean Pipeline::drawCallback (GstElement * gl_sink, void *context, GstSample * sample, gpointer data)
|
|
{
|
|
static GLfloat xrot = 0;
|
|
static GLfloat yrot = 0;
|
|
static GLfloat zrot = 0;
|
|
static gint64 current_time;
|
|
static glong last_sec = 0;
|
|
static gint nbFrames = 0;
|
|
|
|
GstVideoFrame v_frame;
|
|
GstVideoInfo v_info;
|
|
guint texture = 0;
|
|
GstBuffer *buf = gst_sample_get_buffer (sample);
|
|
GstCaps *caps = gst_sample_get_caps (sample);
|
|
|
|
gst_video_info_from_caps (&v_info, caps);
|
|
|
|
if (!gst_video_frame_map (&v_frame, &v_info, buf, (GstMapFlags) (GST_MAP_READ | GST_MAP_GL))) {
|
|
g_warning ("Failed to map the video buffer");
|
|
return TRUE;
|
|
}
|
|
|
|
texture = *(guint *) v_frame.data[0];
|
|
|
|
current_time = g_get_monotonic_time ();
|
|
nbFrames++ ;
|
|
|
|
if ((current_time / G_USEC_PER_SEC - last_sec) >= 1)
|
|
{
|
|
qDebug ("GRPHIC FPS = %d", nbFrames);
|
|
nbFrames = 0;
|
|
last_sec = current_time / G_USEC_PER_SEC;
|
|
}
|
|
|
|
glEnable(GL_DEPTH_TEST);
|
|
|
|
glEnable (GL_TEXTURE_2D);
|
|
glBindTexture (GL_TEXTURE_2D, texture);
|
|
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
|
|
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
|
|
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
|
|
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
|
|
glTexEnvi (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
|
|
|
|
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
|
glMatrixMode(GL_PROJECTION);
|
|
glLoadIdentity();
|
|
|
|
glScalef (0.5, 0.5, 0.5);
|
|
|
|
glRotatef(xrot,1.0f,0.0f,0.0f);
|
|
glRotatef(yrot,0.0f,1.0f,0.0f);
|
|
glRotatef(zrot,0.0f,0.0f,1.0f);
|
|
|
|
glBegin(GL_QUADS);
|
|
// Front Face
|
|
glTexCoord2f(1.0, 0.0f); glVertex3f(-1.0f, -1.0f, 1.0f);
|
|
glTexCoord2f(0.0f, 0.0f); glVertex3f( 1.0f, -1.0f, 1.0f);
|
|
glTexCoord2f(0.0f, 1.0f); glVertex3f( 1.0f, 1.0f, 1.0f);
|
|
glTexCoord2f(1.0, 1.0f); glVertex3f(-1.0f, 1.0f, 1.0f);
|
|
// Back Face
|
|
glTexCoord2f(0.0f, 0.0f); glVertex3f(-1.0f, -1.0f, -1.0f);
|
|
glTexCoord2f(0.0f, 1.0f); glVertex3f(-1.0f, 1.0f, -1.0f);
|
|
glTexCoord2f(1.0, 1.0f); glVertex3f( 1.0f, 1.0f, -1.0f);
|
|
glTexCoord2f(1.0, 0.0f); glVertex3f( 1.0f, -1.0f, -1.0f);
|
|
// Top Face
|
|
glTexCoord2f(1.0, 1.0f); glVertex3f(-1.0f, 1.0f, -1.0f);
|
|
glTexCoord2f(1.0, 0.0f); glVertex3f(-1.0f, 1.0f, 1.0f);
|
|
glTexCoord2f(0.0f, 0.0f); glVertex3f( 1.0f, 1.0f, 1.0f);
|
|
glTexCoord2f(0.0f, 1.0f); glVertex3f( 1.0f, 1.0f, -1.0f);
|
|
// Bottom Face
|
|
glTexCoord2f(1.0, 0.0f); glVertex3f(-1.0f, -1.0f, -1.0f);
|
|
glTexCoord2f(0.0f, 0.0f); glVertex3f( 1.0f, -1.0f, -1.0f);
|
|
glTexCoord2f(0.0f, 1.0f); glVertex3f( 1.0f, -1.0f, 1.0f);
|
|
glTexCoord2f(1.0,1.0f); glVertex3f(-1.0f, -1.0f, 1.0f);
|
|
// Right face
|
|
glTexCoord2f(0.0f, 0.0f); glVertex3f( 1.0f, -1.0f, -1.0f);
|
|
glTexCoord2f(0.0f, 1.0f); glVertex3f( 1.0f, 1.0f, -1.0f);
|
|
glTexCoord2f(1.0, 1.0f); glVertex3f( 1.0f, 1.0f, 1.0f);
|
|
glTexCoord2f(1.0, 0.0f); glVertex3f( 1.0f, -1.0f, 1.0f);
|
|
// Left Face
|
|
glTexCoord2f(1.0, 0.0f); glVertex3f(-1.0f, -1.0f, -1.0f);
|
|
glTexCoord2f(0.0f, 0.0f); glVertex3f(-1.0f, -1.0f, 1.0f);
|
|
glTexCoord2f(0.0f, 1.0f); glVertex3f(-1.0f, 1.0f, 1.0f);
|
|
glTexCoord2f(1.0, 1.0f); glVertex3f(-1.0f, 1.0f, -1.0f);
|
|
glEnd();
|
|
|
|
glLoadIdentity();
|
|
glDisable(GL_DEPTH_TEST);
|
|
glBindTexture (GL_TEXTURE_2D, 0);
|
|
|
|
gst_video_frame_unmap (&v_frame);
|
|
|
|
xrot+=0.03f;
|
|
yrot+=0.02f;
|
|
zrot+=0.04f;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
gboolean Pipeline::bus_call (GstBus *bus, GstMessage *msg, Pipeline* p)
|
|
{
|
|
switch (GST_MESSAGE_TYPE (msg))
|
|
{
|
|
case GST_MESSAGE_EOS:
|
|
qDebug ("End-of-stream");
|
|
p->stop();
|
|
break;
|
|
case GST_MESSAGE_ERROR:
|
|
{
|
|
gchar *debug = NULL;
|
|
GError *err = NULL;
|
|
gst_message_parse_error (msg, &err, &debug);
|
|
qDebug ("Error: %s", err->message);
|
|
g_error_free (err);
|
|
if (debug)
|
|
{
|
|
qDebug ("Debug deails: %s", debug);
|
|
g_free (debug);
|
|
}
|
|
p->stop();
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
void Pipeline::cb_new_pad (GstElement* decodebin, GstPad* pad, Pipeline* p)
|
|
{
|
|
GstElement* sink = p->getVideoSink();
|
|
GstPad* glpad = gst_element_get_static_pad (sink, "sink");
|
|
|
|
//only link once
|
|
if (GST_PAD_IS_LINKED (glpad))
|
|
{
|
|
gst_object_unref (glpad);
|
|
return;
|
|
}
|
|
|
|
GstCaps* caps = gst_pad_get_current_caps (pad);
|
|
GstStructure* str = gst_caps_get_structure (caps, 0);
|
|
if (!g_strrstr (gst_structure_get_name (str), "video"))
|
|
{
|
|
gst_caps_unref (caps);
|
|
gst_object_unref (glpad);
|
|
return;
|
|
}
|
|
gst_caps_unref (caps);
|
|
|
|
GstPadLinkReturn ret = gst_pad_link (pad, glpad);
|
|
if (ret != GST_PAD_LINK_OK)
|
|
g_warning ("Failed to link with decodebin!\n");
|
|
|
|
p->show();
|
|
}
|
|
|
|
gboolean Pipeline::cb_expose (gpointer data)
|
|
{
|
|
((Pipeline*)data)->doExpose();
|
|
return FALSE;
|
|
}
|
|
|
|
GstBusSyncReply Pipeline::create_window (GstBus* bus, GstMessage* message, const Pipeline* p)
|
|
{
|
|
// ignore anything but 'prepare-window-handle' element messages
|
|
if (GST_MESSAGE_TYPE (message) != GST_MESSAGE_ELEMENT)
|
|
return GST_BUS_PASS;
|
|
|
|
if (!gst_is_video_overlay_prepare_window_handle_message (message))
|
|
return GST_BUS_PASS;
|
|
|
|
qDebug ("setting window handle");
|
|
|
|
//Passing 0 as the window_handle will tell the overlay to stop using that window and create an internal one.
|
|
//In the directdrawsink's gst_video_overlay_set_window_handle implementation, window_handle (parameter 2) is casted to HWND before it used.
|
|
gst_video_overlay_set_window_handle (GST_VIDEO_OVERLAY (GST_MESSAGE_SRC (message)), (guintptr)p->winId());
|
|
|
|
gst_message_unref (message);
|
|
|
|
return GST_BUS_DROP;
|
|
}
|