| /* |
| * 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/gst.h> |
| #include <gst/gl/gl.h> |
| |
| #include <iostream> |
| #include <sstream> |
| #include <string> |
| |
| static gboolean bus_call (GstBus *bus, GstMessage *msg, gpointer data) |
| { |
| GMainLoop *loop = (GMainLoop*)data; |
| |
| switch (GST_MESSAGE_TYPE (msg)) |
| { |
| case GST_MESSAGE_EOS: |
| g_print ("End-of-stream\n"); |
| g_main_loop_quit (loop); |
| break; |
| case GST_MESSAGE_ERROR: |
| { |
| gchar *debug = NULL; |
| GError *err = NULL; |
| |
| gst_message_parse_error (msg, &err, &debug); |
| |
| g_print ("Error: %s\n", err->message); |
| g_error_free (err); |
| |
| if (debug) |
| { |
| g_print ("Debug deails: %s\n", debug); |
| g_free (debug); |
| } |
| |
| g_main_loop_quit (loop); |
| break; |
| } |
| default: |
| break; |
| } |
| |
| return TRUE; |
| } |
| |
| |
| //display video framerate |
| static void identityCallback (GstElement *src, GstBuffer *buffer, GstElement* textoverlay) |
| { |
| static GstClockTime last_timestamp = 0; |
| static gint nbFrames = 0 ; |
| |
| //display estimated video FPS |
| nbFrames++ ; |
| if (GST_BUFFER_TIMESTAMP(buffer) - last_timestamp >= 1000000000) |
| { |
| std::ostringstream oss ; |
| oss << "video framerate = " << nbFrames ; |
| std::string s(oss.str()) ; |
| g_object_set(G_OBJECT(textoverlay), "text", s.c_str(), NULL); |
| last_timestamp = GST_BUFFER_TIMESTAMP(buffer) ; |
| nbFrames = 0 ; |
| } |
| } |
| |
| |
| //client reshape callback |
| static gboolean reshapeCallback (void * gl_sink, void *context, GLuint width, GLuint height, gpointer data) |
| { |
| glViewport(0, 0, width, height); |
| glMatrixMode(GL_PROJECTION); |
| glLoadIdentity(); |
| glMatrixMode(GL_MODELVIEW); |
| |
| return TRUE; |
| } |
| |
| |
| //client draw callback |
| static gboolean drawCallback (GstElement * gl_sink, GstGLContext *context, GstSample * sample, gpointer data) |
| { |
| static GLfloat xrot = 0; |
| static GLfloat yrot = 0; |
| static GLfloat zrot = 0; |
| static GTimeVal current_time; |
| static glong last_sec = current_time.tv_sec; |
| 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]; |
| |
| g_get_current_time (¤t_time); |
| nbFrames++ ; |
| |
| if ((current_time.tv_sec - last_sec) >= 1) |
| { |
| std::cout << "GRPHIC FPS = " << nbFrames << std::endl; |
| nbFrames = 0; |
| last_sec = current_time.tv_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_MODELVIEW); |
| glLoadIdentity(); |
| |
| glRotatef(xrot,1.0f,0.0f,0.0f); |
| glRotatef(yrot,0.0f,1.0f,0.0f); |
| glRotatef(zrot,0.0f,0.0f,1.0f); |
| |
| /* invert the y-axis to get the front face the correct way up */ |
| glScalef (0.5f, -0.5f, 0.5f); |
| |
| glBegin(GL_QUADS); |
| // Front Face |
| glTexCoord2f(1.0f, 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(1.0f, 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(1.0f, 1.0f); glVertex3f( 1.0f, 1.0f, -1.0f); |
| glTexCoord2f(1.0f, 0.0f); glVertex3f( 1.0f, -1.0f, -1.0f); |
| // Top Face |
| glTexCoord2f(1.0f, 1.0f); glVertex3f(-1.0f, 1.0f, -1.0f); |
| glTexCoord2f(1.0f, 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(1.0f, 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(1.0f, 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(1.0f, 1.0f); glVertex3f( 1.0f, 1.0f, 1.0f); |
| glTexCoord2f(1.0f, 0.0f); glVertex3f( 1.0f, -1.0f, 1.0f); |
| // Left Face |
| glTexCoord2f(1.0f, 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(1.0f, 1.0f); glVertex3f(-1.0f, 1.0f, -1.0f); |
| glEnd(); |
| |
| glDisable(GL_DEPTH_TEST); |
| |
| gst_video_frame_unmap (&v_frame); |
| |
| xrot+=0.03f; |
| yrot+=0.02f; |
| zrot+=0.04f; |
| |
| return TRUE; |
| } |
| |
| |
| static void cb_new_pad (GstElement* decodebin, GstPad* pad, GstElement* identity) |
| { |
| GstPad* identity_pad = gst_element_get_static_pad (identity, "sink"); |
| |
| //only link once |
| if (GST_PAD_IS_LINKED (identity_pad)) |
| { |
| gst_object_unref (identity_pad); |
| 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 (identity_pad); |
| return; |
| } |
| gst_caps_unref (caps); |
| |
| GstPadLinkReturn ret = gst_pad_link (pad, identity_pad); |
| if (ret != GST_PAD_LINK_OK) |
| g_warning ("Failed to link with decodebin!\n"); |
| } |
| |
| |
| gint main (gint argc, gchar *argv[]) |
| { |
| if (argc != 2) |
| { |
| g_warning ("usage: cubeyuv.exe videolocation\n"); |
| return -1; |
| } |
| |
| /* FIXME: remove once the example supports gl3 and/or gles2 */ |
| g_setenv ("GST_GL_API", "opengl", FALSE); |
| |
| std::string video_location(argv[1]); |
| |
| /* initialization */ |
| gst_init (&argc, &argv); |
| GMainLoop* loop = g_main_loop_new (NULL, FALSE); |
| |
| /* create elements */ |
| GstElement* pipeline = gst_pipeline_new ("pipeline"); |
| |
| /* watch for messages on the pipeline's bus (note that this will only |
| * work like this when a GLib main loop is running) */ |
| GstBus* bus = gst_pipeline_get_bus (GST_PIPELINE (pipeline)); |
| gst_bus_add_watch (bus, bus_call, loop); |
| gst_object_unref (bus); |
| |
| /* create elements */ |
| GstElement* videosrc = gst_element_factory_make ("filesrc", "filesrc0"); |
| GstElement* decodebin = gst_element_factory_make ("decodebin", "decodebin"); |
| GstElement* identity = gst_element_factory_make ("identity", "identity0"); |
| GstElement* textoverlay = gst_element_factory_make ("textoverlay", "textoverlay0"); |
| GstElement* glimagesink = gst_element_factory_make ("glimagesink", "glimagesink0"); |
| |
| |
| if (!videosrc || !decodebin || !identity || !textoverlay || !glimagesink) |
| { |
| g_print ("one element could not be found \n"); |
| return -1; |
| } |
| |
| /* configure elements */ |
| g_object_set(G_OBJECT(videosrc), "num-buffers", 800, NULL); |
| g_object_set(G_OBJECT(videosrc), "location", video_location.c_str(), NULL); |
| g_signal_connect(identity, "handoff", G_CALLBACK(identityCallback), textoverlay) ; |
| g_object_set(G_OBJECT(textoverlay), "font_desc", "Ahafoni CLM Bold 30", NULL); |
| g_signal_connect(G_OBJECT(glimagesink), "client-reshape", G_CALLBACK (reshapeCallback), NULL); |
| g_signal_connect(G_OBJECT(glimagesink), "client-draw", G_CALLBACK (drawCallback), NULL); |
| |
| /* add elements */ |
| gst_bin_add_many (GST_BIN (pipeline), videosrc, decodebin, identity, |
| textoverlay, glimagesink, NULL); |
| |
| /* link elements */ |
| gst_element_link_pads (videosrc, "src", decodebin, "sink"); |
| |
| g_signal_connect (decodebin, "pad-added", G_CALLBACK (cb_new_pad), identity); |
| |
| if (!gst_element_link_pads(identity, "src", textoverlay, "video_sink")) |
| { |
| g_print ("Failed to link identity to textoverlay!\n"); |
| return -1; |
| } |
| |
| gboolean link_ok = gst_element_link (textoverlay, glimagesink); |
| if(!link_ok) |
| { |
| g_warning("Failed to link textoverlay to glimagesink!\n") ; |
| return -1 ; |
| } |
| |
| /* run */ |
| GstStateChangeReturn ret = gst_element_set_state (pipeline, GST_STATE_PLAYING); |
| if (ret == GST_STATE_CHANGE_FAILURE) |
| { |
| g_print ("Failed to start up pipeline!\n"); |
| |
| /* check if there is an error message with details on the bus */ |
| GstMessage* msg = gst_bus_poll (bus, GST_MESSAGE_ERROR, 0); |
| if (msg) |
| { |
| GError *err = NULL; |
| |
| gst_message_parse_error (msg, &err, NULL); |
| g_print ("ERROR: %s\n", err->message); |
| g_error_free (err); |
| gst_message_unref (msg); |
| } |
| return -1; |
| } |
| |
| g_main_loop_run (loop); |
| |
| /* clean up */ |
| gst_element_set_state (pipeline, GST_STATE_NULL); |
| gst_object_unref (pipeline); |
| |
| return 0; |
| } |
