| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: src/unix/mediactrl.cpp |
| 3 | // Purpose: GStreamer backend for Unix |
| 4 | // Author: Ryan Norton <wxprojects@comcast.net> |
| 5 | // Modified by: |
| 6 | // Created: 02/04/05 |
| 7 | // RCS-ID: $Id$ |
| 8 | // Copyright: (c) 2004-2005 Ryan Norton |
| 9 | // Licence: wxWindows licence |
| 10 | ///////////////////////////////////////////////////////////////////////////// |
| 11 | |
| 12 | // For compilers that support precompilation, includes "wx.h". |
| 13 | #include "wx/wxprec.h" |
| 14 | |
| 15 | #if wxUSE_MEDIACTRL |
| 16 | |
| 17 | #include "wx/mediactrl.h" |
| 18 | |
| 19 | #if wxUSE_GSTREAMER |
| 20 | |
| 21 | #include <gst/gst.h> // main gstreamer header |
| 22 | |
| 23 | // xoverlay/video stuff, gst-gconf for 0.8 |
| 24 | #if GST_VERSION_MAJOR > 0 || GST_VERSION_MINOR >= 10 |
| 25 | # include <gst/interfaces/xoverlay.h> |
| 26 | #else |
| 27 | # include <gst/xoverlay/xoverlay.h> |
| 28 | # include <gst/gconf/gconf.h> // gstreamer glib configuration |
| 29 | #endif |
| 30 | |
| 31 | #ifndef WX_PRECOMP |
| 32 | #include "wx/log.h" // wxLogDebug/wxLogSysError/wxLogTrace |
| 33 | #include "wx/app.h" // wxTheApp->argc, wxTheApp->argv |
| 34 | #include "wx/timer.h" // wxTimer |
| 35 | #endif |
| 36 | |
| 37 | #include "wx/thread.h" // wxMutex/wxMutexLocker |
| 38 | |
| 39 | #ifdef __WXGTK__ |
| 40 | # include "wx/gtk/win_gtk.h" |
| 41 | # include <gdk/gdkx.h> // for GDK_WINDOW_XWINDOW |
| 42 | #endif |
| 43 | |
| 44 | //----------------------------------------------------------------------------- |
| 45 | // Discussion of internals |
| 46 | //----------------------------------------------------------------------------- |
| 47 | |
| 48 | /* |
| 49 | This is the GStreamer backend for unix. Currently we require 0.8 or |
| 50 | 0.10. Here we use the "playbin" GstElement for ease of use. |
| 51 | |
| 52 | Note that now we compare state change functions to GST_STATE_FAILURE |
| 53 | now rather than GST_STATE_SUCCESS as newer gstreamer versions return |
| 54 | non-success values for returns that are otherwise successful but not |
| 55 | immediate. |
| 56 | |
| 57 | Also this probably doesn't work with anything other than wxGTK at the |
| 58 | moment but with a tad bit of work it could theorectically work in |
| 59 | straight wxX11 et al. |
| 60 | |
| 61 | One last note is that resuming from pausing/seeking can result |
| 62 | in erratic video playback (GStreamer-based bug, happens in totem as well) |
| 63 | - this is better in 0.10, however. One thing that might make it worse |
| 64 | here is that we don't preserve the aspect ratio of the video and stretch |
| 65 | it to the whole window. |
| 66 | |
| 67 | Note that there are some things used here that could be undocumented - |
| 68 | for reference see the media player Kiss and Totem as well as some |
| 69 | other sources. There was a backend for a kde media player as well |
| 70 | that attempted thread-safety... |
| 71 | |
| 72 | Then there is the issue of m_asynclock. This serves several purposes: |
| 73 | 1) It prevents the C callbacks from sending wx state change events |
| 74 | so that we don't get duplicate ones in 0.8 |
| 75 | 2) It makes the sync and async handlers in 0.10 not drop any |
| 76 | messages so that while we are polling it we get the messages in |
| 77 | SyncStateChange instead of the queue. |
| 78 | 3) Keeps the pausing in Stop() synchronous |
| 79 | |
| 80 | RN: Note that I've tried to follow the wxGTK conventions here as close |
| 81 | as possible. In the implementation the C Callbacks come first, then |
| 82 | the internal functions, then the public ones. Set your vi to 80 |
| 83 | characters people :). |
| 84 | */ |
| 85 | |
| 86 | //============================================================================= |
| 87 | // Declarations |
| 88 | //============================================================================= |
| 89 | |
| 90 | //----------------------------------------------------------------------------- |
| 91 | // GStreamer (most version compatability) macros |
| 92 | //----------------------------------------------------------------------------- |
| 93 | |
| 94 | // In 0.9 there was a HUGE change to GstQuery and the |
| 95 | // gst_element_query function changed dramatically and split off |
| 96 | // into two seperate ones |
| 97 | #if GST_VERSION_MAJOR == 0 && GST_VERSION_MINOR <= 8 |
| 98 | # define wxGst_element_query_duration(e, f, p) \ |
| 99 | gst_element_query(e, GST_QUERY_TOTAL, f, p) |
| 100 | # define wxGst_element_query_position(e, f, p) \ |
| 101 | gst_element_query(e, GST_QUERY_POSITION, f, p) |
| 102 | #elif GST_VERSION_MAJOR == 0 && GST_VERSION_MINOR == 9 |
| 103 | // However, the actual 0.9 version has a slightly different definition |
| 104 | // and instead of gst_element_query_duration it has two parameters to |
| 105 | // gst_element_query_position instead |
| 106 | # define wxGst_element_query_duration(e, f, p) \ |
| 107 | gst_element_query_position(e, f, 0, p) |
| 108 | # define wxGst_element_query_position(e, f, p) \ |
| 109 | gst_element_query_position(e, f, p, 0) |
| 110 | #else |
| 111 | # define wxGst_element_query_duration \ |
| 112 | gst_element_query_duration |
| 113 | # define wxGst_element_query_position \ |
| 114 | gst_element_query_position |
| 115 | #endif |
| 116 | |
| 117 | // Other 0.10 macros |
| 118 | #if GST_VERSION_MAJOR > 0 || GST_VERSION_MINOR >= 10 |
| 119 | # define GST_STATE_FAILURE GST_STATE_CHANGE_FAILURE |
| 120 | # define GST_STATE_SUCCESS GST_STATE_CHANGE_SUCCESS |
| 121 | # define GstElementState GstState |
| 122 | # define gst_gconf_get_default_video_sink() \ |
| 123 | gst_element_factory_make ("gconfvideosink", "video-sink"); |
| 124 | # define gst_gconf_get_default_audio_sink() \ |
| 125 | gst_element_factory_make ("gconfaudiosink", "audio-sink"); |
| 126 | #endif |
| 127 | |
| 128 | // Max wait time for element state waiting - GST_CLOCK_TIME_NONE for inf |
| 129 | #define wxGSTREAMER_TIMEOUT (100 * GST_MSECOND) // Max 100 milliseconds |
| 130 | |
| 131 | //----------------------------------------------------------------------------- |
| 132 | // wxGTK Debugging and idle stuff |
| 133 | //----------------------------------------------------------------------------- |
| 134 | #ifdef __WXGTK__ |
| 135 | |
| 136 | # ifdef __WXDEBUG__ |
| 137 | # if wxUSE_THREADS |
| 138 | # define DEBUG_MAIN_THREAD \ |
| 139 | if (wxThread::IsMain() && g_mainThreadLocked) \ |
| 140 | wxPrintf(wxT("gui reentrance")); |
| 141 | # else |
| 142 | # define DEBUG_MAIN_THREAD |
| 143 | # endif |
| 144 | # else |
| 145 | # define DEBUG_MAIN_THREAD |
| 146 | # endif // Debug |
| 147 | |
| 148 | #ifndef __WXGTK20__ |
| 149 | extern void wxapp_install_idle_handler(); |
| 150 | extern bool g_isIdle; |
| 151 | #endif |
| 152 | extern bool g_mainThreadLocked; |
| 153 | #endif // wxGTK |
| 154 | |
| 155 | //----------------------------------------------------------------------------- |
| 156 | // wxLogTrace mask string |
| 157 | //----------------------------------------------------------------------------- |
| 158 | #define wxTRACE_GStreamer wxT("GStreamer") |
| 159 | |
| 160 | //----------------------------------------------------------------------------- |
| 161 | // |
| 162 | // wxGStreamerMediaBackend |
| 163 | // |
| 164 | //----------------------------------------------------------------------------- |
| 165 | class WXDLLIMPEXP_MEDIA |
| 166 | wxGStreamerMediaBackend : public wxMediaBackendCommonBase |
| 167 | { |
| 168 | public: |
| 169 | |
| 170 | wxGStreamerMediaBackend(); |
| 171 | virtual ~wxGStreamerMediaBackend(); |
| 172 | |
| 173 | virtual bool CreateControl(wxControl* ctrl, wxWindow* parent, |
| 174 | wxWindowID id, |
| 175 | const wxPoint& pos, |
| 176 | const wxSize& size, |
| 177 | long style, |
| 178 | const wxValidator& validator, |
| 179 | const wxString& name); |
| 180 | |
| 181 | virtual bool Play(); |
| 182 | virtual bool Pause(); |
| 183 | virtual bool Stop(); |
| 184 | |
| 185 | virtual bool Load(const wxString& fileName); |
| 186 | virtual bool Load(const wxURI& location); |
| 187 | |
| 188 | virtual wxMediaState GetState(); |
| 189 | |
| 190 | virtual bool SetPosition(wxLongLong where); |
| 191 | virtual wxLongLong GetPosition(); |
| 192 | virtual wxLongLong GetDuration(); |
| 193 | |
| 194 | virtual void Move(int x, int y, int w, int h); |
| 195 | wxSize GetVideoSize() const; |
| 196 | |
| 197 | virtual double GetPlaybackRate(); |
| 198 | virtual bool SetPlaybackRate(double dRate); |
| 199 | |
| 200 | virtual wxLongLong GetDownloadProgress(); |
| 201 | virtual wxLongLong GetDownloadTotal(); |
| 202 | |
| 203 | virtual bool SetVolume(double dVolume); |
| 204 | virtual double GetVolume(); |
| 205 | |
| 206 | //------------implementation from now on----------------------------------- |
| 207 | bool DoLoad(const wxString& locstring); |
| 208 | wxMediaCtrl* GetControl() { return m_ctrl; } // for C Callbacks |
| 209 | void HandleStateChange(GstElementState oldstate, GstElementState newstate); |
| 210 | bool QueryVideoSizeFromElement(GstElement* element); |
| 211 | bool QueryVideoSizeFromPad(GstPad* caps); |
| 212 | void SetupXOverlay(); |
| 213 | bool SyncStateChange(GstElement* element, GstElementState state, |
| 214 | gint64 llTimeout = wxGSTREAMER_TIMEOUT); |
| 215 | bool TryAudioSink(GstElement* audiosink); |
| 216 | bool TryVideoSink(GstElement* videosink); |
| 217 | |
| 218 | GstElement* m_playbin; // GStreamer media element |
| 219 | wxSize m_videoSize; // Cached actual video size |
| 220 | double m_dRate; // Current playback rate - |
| 221 | // see GetPlaybackRate for notes |
| 222 | wxLongLong m_llPausedPos; // Paused position - see Pause() |
| 223 | GstXOverlay* m_xoverlay; // X Overlay that contains the GST video |
| 224 | wxMutex m_asynclock; // See "discussion of internals" |
| 225 | class wxGStreamerMediaEventHandler* m_eventHandler; // see below |
| 226 | |
| 227 | friend class wxGStreamerMediaEventHandler; |
| 228 | friend class wxGStreamerLoadWaitTimer; |
| 229 | DECLARE_DYNAMIC_CLASS(wxGStreamerMediaBackend); |
| 230 | }; |
| 231 | |
| 232 | //----------------------------------------------------------------------------- |
| 233 | // wxGStreamerMediaEventHandler |
| 234 | // |
| 235 | // OK, this will take an explanation - basically gstreamer callbacks |
| 236 | // are issued in a seperate thread, and in this thread we may not set |
| 237 | // the state of the playbin, so we need to send a wx event in that |
| 238 | // callback so that we set the state of the media and other stuff |
| 239 | // like GUI calls. |
| 240 | //----------------------------------------------------------------------------- |
| 241 | class wxGStreamerMediaEventHandler : public wxEvtHandler |
| 242 | { |
| 243 | public: |
| 244 | wxGStreamerMediaEventHandler(wxGStreamerMediaBackend* be) : m_be(be) |
| 245 | { |
| 246 | this->Connect(wxID_ANY, wxEVT_MEDIA_FINISHED, |
| 247 | wxMediaEventHandler(wxGStreamerMediaEventHandler::OnMediaFinish)); |
| 248 | } |
| 249 | |
| 250 | void OnMediaFinish(wxMediaEvent& event); |
| 251 | |
| 252 | wxGStreamerMediaBackend* m_be; |
| 253 | }; |
| 254 | |
| 255 | //============================================================================= |
| 256 | // Implementation |
| 257 | //============================================================================= |
| 258 | |
| 259 | IMPLEMENT_DYNAMIC_CLASS(wxGStreamerMediaBackend, wxMediaBackend) |
| 260 | |
| 261 | //----------------------------------------------------------------------------- |
| 262 | // |
| 263 | // C Callbacks |
| 264 | // |
| 265 | //----------------------------------------------------------------------------- |
| 266 | |
| 267 | //----------------------------------------------------------------------------- |
| 268 | // "expose_event" from m_ctrl->m_wxwindow |
| 269 | // |
| 270 | // Handle GTK expose event from our window - here we hopefully |
| 271 | // redraw the video in the case of pausing and other instances... |
| 272 | // (Returns TRUE to pass to other handlers, FALSE if not) |
| 273 | // |
| 274 | // TODO: Do a DEBUG_MAIN_THREAD/install_idle_handler here? |
| 275 | //----------------------------------------------------------------------------- |
| 276 | #ifdef __WXGTK__ |
| 277 | extern "C" { |
| 278 | static gboolean gtk_window_expose_callback(GtkWidget *widget, |
| 279 | GdkEventExpose *event, |
| 280 | wxGStreamerMediaBackend *be) |
| 281 | { |
| 282 | if(event->count > 0) |
| 283 | return FALSE; |
| 284 | |
| 285 | GdkWindow *window = GTK_PIZZA(be->GetControl()->m_wxwindow)->bin_window; |
| 286 | |
| 287 | // I've seen this reccommended somewhere... |
| 288 | // TODO: Is this needed? Maybe it is just cruft... |
| 289 | // gst_x_overlay_set_xwindow_id( GST_X_OVERLAY(be->m_xoverlay), |
| 290 | // GDK_WINDOW_XWINDOW( window ) ); |
| 291 | |
| 292 | // If we have actual video..... |
| 293 | if(!(be->m_videoSize.x==0&&be->m_videoSize.y==0) && |
| 294 | GST_STATE(be->m_playbin) >= GST_STATE_PAUSED) |
| 295 | { |
| 296 | // GST Doesn't redraw automatically while paused |
| 297 | // Plus, the video sometimes doesn't redraw when it looses focus |
| 298 | // or is painted over so we just tell it to redraw... |
| 299 | gst_x_overlay_expose(be->m_xoverlay); |
| 300 | } |
| 301 | else |
| 302 | { |
| 303 | // draw a black background like some other backends do.... |
| 304 | gdk_draw_rectangle (window, widget->style->black_gc, TRUE, 0, 0, |
| 305 | widget->allocation.width, |
| 306 | widget->allocation.height); |
| 307 | } |
| 308 | |
| 309 | return FALSE; |
| 310 | } |
| 311 | } |
| 312 | #endif // wxGTK |
| 313 | |
| 314 | //----------------------------------------------------------------------------- |
| 315 | // "realize" from m_ctrl->m_wxwindow |
| 316 | // |
| 317 | // If the window wasn't realized when Load was called, this is the |
| 318 | // callback for when it is - the purpose of which is to tell |
| 319 | // GStreamer to play the video in our control |
| 320 | //----------------------------------------------------------------------------- |
| 321 | #ifdef __WXGTK__ |
| 322 | extern "C" { |
| 323 | static gint gtk_window_realize_callback(GtkWidget* theWidget, |
| 324 | wxGStreamerMediaBackend* be) |
| 325 | { |
| 326 | DEBUG_MAIN_THREAD // TODO: Is this neccessary? |
| 327 | |
| 328 | #ifndef __WXGTK20__ |
| 329 | if (g_isIdle) // FIXME: Why is needed? For wxYield? ?? |
| 330 | wxapp_install_idle_handler(); |
| 331 | #endif |
| 332 | |
| 333 | wxYield(); // FIXME: RN: X Server gets an error/crash if I don't do |
| 334 | // this or a messagebox beforehand?!?!?? |
| 335 | |
| 336 | GdkWindow *window = GTK_PIZZA(theWidget)->bin_window; |
| 337 | wxASSERT(window); |
| 338 | |
| 339 | gst_x_overlay_set_xwindow_id( GST_X_OVERLAY(be->m_xoverlay), |
| 340 | GDK_WINDOW_XWINDOW( window ) |
| 341 | ); |
| 342 | g_signal_connect (be->GetControl()->m_wxwindow, |
| 343 | "expose_event", |
| 344 | G_CALLBACK(gtk_window_expose_callback), be); |
| 345 | return 0; |
| 346 | } |
| 347 | } |
| 348 | #endif // wxGTK |
| 349 | |
| 350 | //----------------------------------------------------------------------------- |
| 351 | // "state-change" from m_playbin/GST_MESSAGE_STATE_CHANGE |
| 352 | // |
| 353 | // Called by gstreamer when the state changes - here we |
| 354 | // send the appropriate corresponding wx event. |
| 355 | // |
| 356 | // 0.8 only as HandleStateChange does this in both versions |
| 357 | //----------------------------------------------------------------------------- |
| 358 | #if GST_VERSION_MAJOR == 0 && GST_VERSION_MINOR < 10 |
| 359 | extern "C" { |
| 360 | static void gst_state_change_callback(GstElement *play, |
| 361 | GstElementState oldstate, |
| 362 | GstElementState newstate, |
| 363 | wxGStreamerMediaBackend* be) |
| 364 | { |
| 365 | if(be->m_asynclock.TryLock() == wxMUTEX_NO_ERROR) |
| 366 | { |
| 367 | be->HandleStateChange(oldstate, newstate); |
| 368 | be->m_asynclock.Unlock(); |
| 369 | } |
| 370 | } |
| 371 | } |
| 372 | #endif // <0.10 |
| 373 | |
| 374 | //----------------------------------------------------------------------------- |
| 375 | // "eos" from m_playbin/GST_MESSAGE_EOS |
| 376 | // |
| 377 | // Called by gstreamer when the media is done playing ("end of stream") |
| 378 | //----------------------------------------------------------------------------- |
| 379 | extern "C" { |
| 380 | static void gst_finish_callback(GstElement *play, |
| 381 | wxGStreamerMediaBackend* be) |
| 382 | { |
| 383 | wxLogTrace(wxTRACE_GStreamer, wxT("gst_finish_callback")); |
| 384 | wxMediaEvent event(wxEVT_MEDIA_FINISHED); |
| 385 | be->m_eventHandler->AddPendingEvent(event); |
| 386 | } |
| 387 | } |
| 388 | |
| 389 | //----------------------------------------------------------------------------- |
| 390 | // "error" from m_playbin/GST_MESSAGE_ERROR |
| 391 | // |
| 392 | // Called by gstreamer when an error is encountered playing the media - |
| 393 | // We call wxLogTrace in addition wxLogSysError so that we can get it |
| 394 | // on the command line as well for those who want extra traces. |
| 395 | //----------------------------------------------------------------------------- |
| 396 | extern "C" { |
| 397 | static void gst_error_callback(GstElement *play, |
| 398 | GstElement *src, |
| 399 | GError *err, |
| 400 | gchar *debug, |
| 401 | wxGStreamerMediaBackend* be) |
| 402 | { |
| 403 | wxString sError; |
| 404 | sError.Printf(wxT("gst_error_callback\n") |
| 405 | wxT("Error Message:%s\nDebug:%s\n"), |
| 406 | (const wxChar*)wxConvUTF8.cMB2WX(err->message), |
| 407 | (const wxChar*)wxConvUTF8.cMB2WX(debug)); |
| 408 | wxLogTrace(wxTRACE_GStreamer, sError); |
| 409 | wxLogSysError(sError); |
| 410 | } |
| 411 | } |
| 412 | |
| 413 | //----------------------------------------------------------------------------- |
| 414 | // "notify::caps" from the videopad inside "stream-info" of m_playbin |
| 415 | // |
| 416 | // Called by gstreamer when the video caps for the media is ready - currently |
| 417 | // we use the caps to get the natural size of the video |
| 418 | // |
| 419 | // (Undocumented?) |
| 420 | //----------------------------------------------------------------------------- |
| 421 | extern "C" { |
| 422 | static void gst_notify_caps_callback(GstPad* pad, |
| 423 | GParamSpec* pspec, |
| 424 | wxGStreamerMediaBackend* be) |
| 425 | { |
| 426 | wxLogTrace(wxTRACE_GStreamer, wxT("gst_notify_caps_callback")); |
| 427 | be->QueryVideoSizeFromPad(pad); |
| 428 | } |
| 429 | } |
| 430 | |
| 431 | //----------------------------------------------------------------------------- |
| 432 | // "notify::stream-info" from m_playbin |
| 433 | // |
| 434 | // Run through the stuff in "stream-info" of m_playbin for a valid |
| 435 | // video pad, and then attempt to query the video size from it - if not |
| 436 | // set up an event to do so when ready. |
| 437 | // |
| 438 | // Currently unused - now we just query it directly using |
| 439 | // QueryVideoSizeFromElement. |
| 440 | // |
| 441 | // (Undocumented?) |
| 442 | //----------------------------------------------------------------------------- |
| 443 | #if GST_VERSION_MAJOR > 0 || GST_VERSION_MINOR >= 10 |
| 444 | extern "C" { |
| 445 | static void gst_notify_stream_info_callback(GstElement* element, |
| 446 | GParamSpec* pspec, |
| 447 | wxGStreamerMediaBackend* be) |
| 448 | { |
| 449 | wxLogTrace(wxTRACE_GStreamer, wxT("gst_notify_stream_info_callback")); |
| 450 | be->QueryVideoSizeFromElement(be->m_playbin); |
| 451 | } |
| 452 | } |
| 453 | #endif |
| 454 | |
| 455 | //----------------------------------------------------------------------------- |
| 456 | // "desired-size-changed" from m_xoverlay |
| 457 | // |
| 458 | // 0.8-specific this provides us with the video size when it changes - |
| 459 | // even though we get the caps as well this seems to come before the |
| 460 | // caps notification does... |
| 461 | // |
| 462 | // Note it will return 16,16 for an early-bird value or for audio |
| 463 | //----------------------------------------------------------------------------- |
| 464 | #if GST_VERSION_MAJOR == 0 && GST_VERSION_MINOR < 10 |
| 465 | extern "C" { |
| 466 | static void gst_desired_size_changed_callback(GstElement * play, |
| 467 | guint width, guint height, |
| 468 | wxGStreamerMediaBackend* be) |
| 469 | { |
| 470 | if(!(width == 16 && height == 16)) |
| 471 | { |
| 472 | be->m_videoSize.x = width; |
| 473 | be->m_videoSize.y = height; |
| 474 | } |
| 475 | else |
| 476 | be->QueryVideoSizeFromElement(be->m_playbin); |
| 477 | } |
| 478 | } |
| 479 | #endif |
| 480 | |
| 481 | //----------------------------------------------------------------------------- |
| 482 | // gst_bus_async_callback [static] |
| 483 | // gst_bus_sync_callback [static] |
| 484 | // |
| 485 | // Called by m_playbin for notifications such as end-of-stream in 0.10 - |
| 486 | // in previous versions g_signal notifications were used. Because everything |
| 487 | // in centered in one switch statement though it reminds one of old WinAPI |
| 488 | // stuff. |
| 489 | // |
| 490 | // gst_bus_sync_callback is that sync version that is called on the main GUI |
| 491 | // thread before the async version that we use to set the xwindow id of the |
| 492 | // XOverlay (NB: This isn't currently used - see CreateControl()). |
| 493 | //----------------------------------------------------------------------------- |
| 494 | #if GST_VERSION_MAJOR > 0 || GST_VERSION_MINOR >= 10 |
| 495 | extern "C" { |
| 496 | static gboolean gst_bus_async_callback(GstBus* bus, |
| 497 | GstMessage* message, |
| 498 | wxGStreamerMediaBackend* be) |
| 499 | { |
| 500 | if(((GstElement*)GST_MESSAGE_SRC(message)) != be->m_playbin) |
| 501 | return TRUE; |
| 502 | if(be->m_asynclock.TryLock() != wxMUTEX_NO_ERROR) |
| 503 | return TRUE; |
| 504 | |
| 505 | switch(GST_MESSAGE_TYPE(message)) |
| 506 | { |
| 507 | case GST_MESSAGE_STATE_CHANGED: |
| 508 | { |
| 509 | GstState oldstate, newstate, pendingstate; |
| 510 | gst_message_parse_state_changed(message, &oldstate, |
| 511 | &newstate, &pendingstate); |
| 512 | be->HandleStateChange(oldstate, newstate); |
| 513 | break; |
| 514 | } |
| 515 | case GST_MESSAGE_EOS: |
| 516 | { |
| 517 | gst_finish_callback(NULL, be); |
| 518 | break; |
| 519 | } |
| 520 | case GST_MESSAGE_ERROR: |
| 521 | { |
| 522 | GError* error; |
| 523 | gchar* debug; |
| 524 | gst_message_parse_error(message, &error, &debug); |
| 525 | gst_error_callback(NULL, NULL, error, debug, be); |
| 526 | break; |
| 527 | } |
| 528 | default: |
| 529 | break; |
| 530 | } |
| 531 | |
| 532 | be->m_asynclock.Unlock(); |
| 533 | return FALSE; // remove the message from Z queue |
| 534 | } |
| 535 | |
| 536 | static GstBusSyncReply gst_bus_sync_callback(GstBus* bus, |
| 537 | GstMessage* message, |
| 538 | wxGStreamerMediaBackend* be) |
| 539 | { |
| 540 | // Pass a non-xwindowid-setting event on to the async handler where it |
| 541 | // belongs |
| 542 | if (GST_MESSAGE_TYPE (message) != GST_MESSAGE_ELEMENT || |
| 543 | !gst_structure_has_name (message->structure, "prepare-xwindow-id")) |
| 544 | { |
| 545 | // |
| 546 | // NB: Unfortunately, the async callback can be quite |
| 547 | // buggy at times and often doesn't get called at all, |
| 548 | // so here we are processing it right here in the calling |
| 549 | // thread instead of the GUI one... |
| 550 | // |
| 551 | if(gst_bus_async_callback(bus, message, be)) |
| 552 | return GST_BUS_PASS; |
| 553 | else |
| 554 | return GST_BUS_DROP; |
| 555 | } |
| 556 | |
| 557 | wxLogTrace(wxTRACE_GStreamer, wxT("Got prepare-xwindow-id")); |
| 558 | be->SetupXOverlay(); |
| 559 | return GST_BUS_DROP; // We handled this message - drop from the queue |
| 560 | } |
| 561 | } |
| 562 | #endif |
| 563 | |
| 564 | //----------------------------------------------------------------------------- |
| 565 | // |
| 566 | // Private (although not in the C++ sense) methods |
| 567 | // |
| 568 | //----------------------------------------------------------------------------- |
| 569 | |
| 570 | //----------------------------------------------------------------------------- |
| 571 | // wxGStreamerMediaBackend::HandleStateChange |
| 572 | // |
| 573 | // Handles a state change event from our C Callback for "state-change" or |
| 574 | // the async queue in 0.10. (Mostly this is here to avoid locking the |
| 575 | // the mutex twice...) |
| 576 | //----------------------------------------------------------------------------- |
| 577 | void wxGStreamerMediaBackend::HandleStateChange(GstElementState oldstate, |
| 578 | GstElementState newstate) |
| 579 | { |
| 580 | switch(newstate) |
| 581 | { |
| 582 | case GST_STATE_PLAYING: |
| 583 | wxLogTrace(wxTRACE_GStreamer, wxT("Play event")); |
| 584 | QueuePlayEvent(); |
| 585 | break; |
| 586 | case GST_STATE_PAUSED: |
| 587 | // For some reason .10 sends a lot of oldstate == newstate |
| 588 | // messages - most likely for pending ones - also |
| 589 | // !<GST_STATE_PAUSED as we are only concerned |
| 590 | if(oldstate < GST_STATE_PAUSED || oldstate == newstate) |
| 591 | break; |
| 592 | if(wxGStreamerMediaBackend::GetPosition() != 0) |
| 593 | { |
| 594 | wxLogTrace(wxTRACE_GStreamer, wxT("Pause event")); |
| 595 | QueuePauseEvent(); |
| 596 | } |
| 597 | else |
| 598 | { |
| 599 | wxLogTrace(wxTRACE_GStreamer, wxT("Stop event")); |
| 600 | QueueStopEvent(); |
| 601 | } |
| 602 | break; |
| 603 | default: // GST_STATE_NULL etc. |
| 604 | break; |
| 605 | } |
| 606 | } |
| 607 | |
| 608 | //----------------------------------------------------------------------------- |
| 609 | // wxGStreamerMediaBackend::QueryVideoSizeFromElement |
| 610 | // |
| 611 | // Run through the stuff in "stream-info" of element for a valid |
| 612 | // video pad, and then attempt to query the video size from it - if not |
| 613 | // set up an event to do so when ready. Return true |
| 614 | // if we got a valid video pad. |
| 615 | //----------------------------------------------------------------------------- |
| 616 | bool wxGStreamerMediaBackend::QueryVideoSizeFromElement(GstElement* element) |
| 617 | { |
| 618 | const GList *list = NULL; |
| 619 | g_object_get (G_OBJECT (element), "stream-info", &list, NULL); |
| 620 | |
| 621 | for ( ; list != NULL; list = list->next) |
| 622 | { |
| 623 | GObject *info = (GObject *) list->data; |
| 624 | gint type; |
| 625 | GParamSpec *pspec; |
| 626 | GEnumValue *val; |
| 627 | GstPad *pad = NULL; |
| 628 | |
| 629 | g_object_get (info, "type", &type, NULL); |
| 630 | pspec = g_object_class_find_property ( |
| 631 | G_OBJECT_GET_CLASS (info), "type"); |
| 632 | val = g_enum_get_value (G_PARAM_SPEC_ENUM (pspec)->enum_class, type); |
| 633 | |
| 634 | if (!strncasecmp(val->value_name, "video", 5) || |
| 635 | !strncmp(val->value_name, "GST_STREAM_TYPE_VIDEO", 21)) |
| 636 | { |
| 637 | // Newer gstreamer 0.8+ plugins are SUPPOSED to have "object"... |
| 638 | // but a lot of old plugins still use "pad" :) |
| 639 | pspec = g_object_class_find_property ( |
| 640 | G_OBJECT_GET_CLASS (info), "object"); |
| 641 | |
| 642 | if (!pspec) |
| 643 | g_object_get (info, "pad", &pad, NULL); |
| 644 | else |
| 645 | g_object_get (info, "object", &pad, NULL); |
| 646 | |
| 647 | #if GST_VERSION_MAJOR == 0 && GST_VERSION_MINOR <= 8 |
| 648 | // Killed in 0.9, presumely because events and such |
| 649 | // should be pushed on pads regardless of whether they |
| 650 | // are currently linked |
| 651 | pad = (GstPad *) GST_PAD_REALIZE (pad); |
| 652 | wxASSERT(pad); |
| 653 | #endif |
| 654 | |
| 655 | if(!QueryVideoSizeFromPad(pad)) |
| 656 | { |
| 657 | // wait for those caps to get ready |
| 658 | g_signal_connect( |
| 659 | pad, |
| 660 | "notify::caps", |
| 661 | G_CALLBACK(gst_notify_caps_callback), |
| 662 | this); |
| 663 | } |
| 664 | break; |
| 665 | }// end if video |
| 666 | }// end searching through info list |
| 667 | |
| 668 | // no video (or extremely delayed stream-info) |
| 669 | if(list == NULL) |
| 670 | { |
| 671 | m_videoSize = wxSize(0,0); |
| 672 | return false; |
| 673 | } |
| 674 | |
| 675 | return true; |
| 676 | } |
| 677 | |
| 678 | //----------------------------------------------------------------------------- |
| 679 | // wxGStreamerMediaBackend::QueryVideoSizeFromPad |
| 680 | // |
| 681 | // Gets the size of our video (in wxSize) from a GstPad |
| 682 | //----------------------------------------------------------------------------- |
| 683 | bool wxGStreamerMediaBackend::QueryVideoSizeFromPad(GstPad* pad) |
| 684 | { |
| 685 | const GstCaps* caps = GST_PAD_CAPS(pad); |
| 686 | if ( caps ) |
| 687 | { |
| 688 | const GstStructure *s = gst_caps_get_structure (caps, 0); |
| 689 | wxASSERT(s); |
| 690 | |
| 691 | gst_structure_get_int (s, "width", &m_videoSize.x); |
| 692 | gst_structure_get_int (s, "height", &m_videoSize.y); |
| 693 | |
| 694 | const GValue *par; |
| 695 | par = gst_structure_get_value (s, "pixel-aspect-ratio"); |
| 696 | |
| 697 | if (par) |
| 698 | { |
| 699 | wxLogTrace(wxTRACE_GStreamer, |
| 700 | wxT("pixel-aspect-ratio found in pad")); |
| 701 | int num = par->data[0].v_int, |
| 702 | den = par->data[1].v_int; |
| 703 | |
| 704 | // TODO: maybe better fraction normalization... |
| 705 | if (num > den) |
| 706 | m_videoSize.x = (int) ((float) num * m_videoSize.x / den); |
| 707 | else |
| 708 | m_videoSize.y = (int) ((float) den * m_videoSize.y / num); |
| 709 | } |
| 710 | |
| 711 | wxLogTrace(wxTRACE_GStreamer, wxT("Adjusted video size: [%i,%i]"), |
| 712 | m_videoSize.x, m_videoSize.y); |
| 713 | return true; |
| 714 | } // end if caps |
| 715 | |
| 716 | return false; // not ready/massive failure |
| 717 | } |
| 718 | |
| 719 | //----------------------------------------------------------------------------- |
| 720 | // wxGStreamerMediaBackend::SetupXOverlay |
| 721 | // |
| 722 | // Attempts to set the XWindow id of our GstXOverlay to tell it which |
| 723 | // window to play video in. |
| 724 | //----------------------------------------------------------------------------- |
| 725 | void wxGStreamerMediaBackend::SetupXOverlay() |
| 726 | { |
| 727 | // Use the xoverlay extension to tell gstreamer to play in our window |
| 728 | #ifdef __WXGTK__ |
| 729 | if(!GTK_WIDGET_REALIZED(m_ctrl->m_wxwindow)) |
| 730 | { |
| 731 | // Not realized yet - set to connect at realization time |
| 732 | g_signal_connect (m_ctrl->m_wxwindow, |
| 733 | "realize", |
| 734 | G_CALLBACK (gtk_window_realize_callback), |
| 735 | this); |
| 736 | } |
| 737 | else |
| 738 | { |
| 739 | wxYield(); // see realize callback... |
| 740 | GdkWindow *window = GTK_PIZZA(m_ctrl->m_wxwindow)->bin_window; |
| 741 | wxASSERT(window); |
| 742 | #endif |
| 743 | |
| 744 | gst_x_overlay_set_xwindow_id( GST_X_OVERLAY(m_xoverlay), |
| 745 | #ifdef __WXGTK__ |
| 746 | GDK_WINDOW_XWINDOW( window ) |
| 747 | #else |
| 748 | ctrl->GetHandle() |
| 749 | #endif |
| 750 | ); |
| 751 | |
| 752 | #ifdef __WXGTK__ |
| 753 | g_signal_connect (m_ctrl->m_wxwindow, |
| 754 | // m_ctrl->m_wxwindow/*m_ctrl->m_widget*/, |
| 755 | "expose_event", |
| 756 | G_CALLBACK(gtk_window_expose_callback), this); |
| 757 | } // end if GtkPizza realized |
| 758 | #endif |
| 759 | } |
| 760 | |
| 761 | //----------------------------------------------------------------------------- |
| 762 | // wxGStreamerMediaBackend::SyncStateChange |
| 763 | // |
| 764 | // This function is rather complex - basically the idea is that we |
| 765 | // poll the GstBus of m_playbin until it has reached desiredstate, an error |
| 766 | // is reached, or there are no more messages left in the GstBus queue. |
| 767 | // |
| 768 | // Returns true if there are no messages left in the queue or |
| 769 | // the current state reaches the disired state. |
| 770 | // |
| 771 | // PRECONDITION: Assumes m_asynclock is Lock()ed |
| 772 | //----------------------------------------------------------------------------- |
| 773 | #if GST_VERSION_MAJOR > 0 || GST_VERSION_MINOR >= 10 |
| 774 | bool wxGStreamerMediaBackend::SyncStateChange(GstElement* element, |
| 775 | GstElementState desiredstate, |
| 776 | gint64 llTimeout) |
| 777 | { |
| 778 | GstBus* bus = gst_element_get_bus(element); |
| 779 | GstMessage* message; |
| 780 | bool bBreak = false, |
| 781 | bSuccess = false; |
| 782 | gint64 llTimeWaited = 0; |
| 783 | |
| 784 | do |
| 785 | { |
| 786 | #if 1 |
| 787 | // NB: The GStreamer gst_bus_poll is unfortunately broken and |
| 788 | // throws silly critical internal errors (for instance |
| 789 | // "message != NULL" when the whole point of it is to |
| 790 | // poll for the message in the first place!) so we implement |
| 791 | // our own "waiting mechinism" |
| 792 | if(gst_bus_have_pending(bus) == FALSE) |
| 793 | { |
| 794 | if(llTimeWaited >= llTimeout) |
| 795 | return true; // Reached timeout... assume success |
| 796 | llTimeWaited += 10*GST_MSECOND; |
| 797 | wxMilliSleep(10); |
| 798 | continue; |
| 799 | } |
| 800 | |
| 801 | message = gst_bus_pop(bus); |
| 802 | #else |
| 803 | message = gst_bus_poll(bus, (GstMessageType) |
| 804 | (GST_MESSAGE_STATE_CHANGED | |
| 805 | GST_MESSAGE_ERROR | |
| 806 | GST_MESSAGE_EOS), llTimeout); |
| 807 | if(!message) |
| 808 | return true; |
| 809 | #endif |
| 810 | if(((GstElement*)GST_MESSAGE_SRC(message)) == element) |
| 811 | { |
| 812 | switch(GST_MESSAGE_TYPE(message)) |
| 813 | { |
| 814 | case GST_MESSAGE_STATE_CHANGED: |
| 815 | { |
| 816 | GstState oldstate, newstate, pendingstate; |
| 817 | gst_message_parse_state_changed(message, &oldstate, |
| 818 | &newstate, &pendingstate); |
| 819 | if(newstate == desiredstate) |
| 820 | { |
| 821 | bSuccess = bBreak = true; |
| 822 | } |
| 823 | break; |
| 824 | } |
| 825 | case GST_MESSAGE_ERROR: |
| 826 | { |
| 827 | GError* error; |
| 828 | gchar* debug; |
| 829 | gst_message_parse_error(message, &error, &debug); |
| 830 | gst_error_callback(NULL, NULL, error, debug, this); |
| 831 | bBreak = true; |
| 832 | break; |
| 833 | } |
| 834 | case GST_MESSAGE_EOS: |
| 835 | wxLogSysError(wxT("Reached end of stream prematurely")); |
| 836 | bBreak = true; |
| 837 | break; |
| 838 | default: |
| 839 | break; // not handled |
| 840 | } |
| 841 | } |
| 842 | |
| 843 | gst_message_unref(message); |
| 844 | }while(!bBreak); |
| 845 | |
| 846 | return bSuccess; |
| 847 | } |
| 848 | #else // 0.8 implementation |
| 849 | bool wxGStreamerMediaBackend::SyncStateChange(GstElement* element, |
| 850 | GstElementState desiredstate, |
| 851 | gint64 llTimeout) |
| 852 | { |
| 853 | gint64 llTimeWaited = 0; |
| 854 | while(GST_STATE(element) != desiredstate) |
| 855 | { |
| 856 | if(llTimeWaited >= llTimeout) |
| 857 | break; |
| 858 | llTimeWaited += 10*GST_MSECOND; |
| 859 | wxMilliSleep(10); |
| 860 | } |
| 861 | |
| 862 | return llTimeWaited != llTimeout; |
| 863 | } |
| 864 | #endif |
| 865 | |
| 866 | //----------------------------------------------------------------------------- |
| 867 | // wxGStreamerMediaBackend::TryAudioSink |
| 868 | // wxGStreamerMediaBackend::TryVideoSink |
| 869 | // |
| 870 | // Uses various means to determine whether a passed in video/audio sink |
| 871 | // if suitable for us - if it is not we return false and unref the |
| 872 | // inappropriate sink. |
| 873 | //----------------------------------------------------------------------------- |
| 874 | bool wxGStreamerMediaBackend::TryAudioSink(GstElement* audiosink) |
| 875 | { |
| 876 | if( !GST_IS_ELEMENT(audiosink) ) |
| 877 | { |
| 878 | if(G_IS_OBJECT(audiosink)) |
| 879 | g_object_unref(audiosink); |
| 880 | return false; |
| 881 | } |
| 882 | |
| 883 | return true; |
| 884 | } |
| 885 | |
| 886 | bool wxGStreamerMediaBackend::TryVideoSink(GstElement* videosink) |
| 887 | { |
| 888 | // Check if the video sink either is an xoverlay or might contain one... |
| 889 | if( !GST_IS_BIN(videosink) && !GST_IS_X_OVERLAY(videosink) ) |
| 890 | { |
| 891 | if(G_IS_OBJECT(videosink)) |
| 892 | g_object_unref(videosink); |
| 893 | return false; |
| 894 | } |
| 895 | |
| 896 | // Make our video sink and make sure it supports the x overlay interface |
| 897 | // the x overlay enables us to put the video in our control window |
| 898 | // (i.e. we NEED it!) - also connect to the natural video size change event |
| 899 | if( GST_IS_BIN(videosink) ) |
| 900 | m_xoverlay = (GstXOverlay*) |
| 901 | gst_bin_get_by_interface (GST_BIN (videosink), |
| 902 | GST_TYPE_X_OVERLAY); |
| 903 | else |
| 904 | m_xoverlay = (GstXOverlay*) videosink; |
| 905 | |
| 906 | if ( !GST_IS_X_OVERLAY(m_xoverlay) ) |
| 907 | { |
| 908 | g_object_unref(videosink); |
| 909 | return false; |
| 910 | } |
| 911 | |
| 912 | return true; |
| 913 | } |
| 914 | |
| 915 | //----------------------------------------------------------------------------- |
| 916 | // wxGStreamerMediaEventHandler::OnMediaFinish |
| 917 | // |
| 918 | // Called when the media is about to stop |
| 919 | //----------------------------------------------------------------------------- |
| 920 | void wxGStreamerMediaEventHandler::OnMediaFinish(wxMediaEvent& WXUNUSED(event)) |
| 921 | { |
| 922 | // (RN - I have no idea why I thought this was good behaviour.... |
| 923 | // maybe it made sense for streaming/nonseeking data but |
| 924 | // generally it seems like a really bad idea) - |
| 925 | if(m_be->SendStopEvent()) |
| 926 | { |
| 927 | // Stop the media (we need to set it back to paused |
| 928 | // so that people can get the duration et al. |
| 929 | // and send the finish event (luckily we can "Sync" it out... LOL!) |
| 930 | // (We don't check return values here because we can't really do |
| 931 | // anything...) |
| 932 | wxMutexLocker lock(m_be->m_asynclock); |
| 933 | |
| 934 | // Set element to ready+sync it |
| 935 | gst_element_set_state (m_be->m_playbin, GST_STATE_READY); |
| 936 | m_be->SyncStateChange(m_be->m_playbin, GST_STATE_READY); |
| 937 | |
| 938 | // Now set it to paused + update pause pos to 0 and |
| 939 | // Sync that as well (note that we don't call Stop() here |
| 940 | // due to mutex issues) |
| 941 | gst_element_set_state (m_be->m_playbin, GST_STATE_PAUSED); |
| 942 | m_be->SyncStateChange(m_be->m_playbin, GST_STATE_PAUSED); |
| 943 | m_be->m_llPausedPos = 0; |
| 944 | |
| 945 | // Finally, queue the finish event |
| 946 | m_be->QueueFinishEvent(); |
| 947 | } |
| 948 | } |
| 949 | |
| 950 | //----------------------------------------------------------------------------- |
| 951 | // |
| 952 | // Public methods |
| 953 | // |
| 954 | //----------------------------------------------------------------------------- |
| 955 | |
| 956 | //----------------------------------------------------------------------------- |
| 957 | // wxGStreamerMediaBackend Constructor |
| 958 | // |
| 959 | // Sets m_playbin to NULL signifying we havn't loaded anything yet |
| 960 | //----------------------------------------------------------------------------- |
| 961 | wxGStreamerMediaBackend::wxGStreamerMediaBackend() |
| 962 | : m_playbin(NULL) |
| 963 | { |
| 964 | } |
| 965 | |
| 966 | //----------------------------------------------------------------------------- |
| 967 | // wxGStreamerMediaBackend Destructor |
| 968 | // |
| 969 | // Stops/cleans up memory |
| 970 | // |
| 971 | // NB: This could trigger a critical warning but doing a SyncStateChange |
| 972 | // here is just going to slow down quitting of the app, which is bad. |
| 973 | //----------------------------------------------------------------------------- |
| 974 | wxGStreamerMediaBackend::~wxGStreamerMediaBackend() |
| 975 | { |
| 976 | // Dispose of the main player and related objects |
| 977 | if(m_playbin) |
| 978 | { |
| 979 | wxASSERT( GST_IS_OBJECT(m_playbin) ); |
| 980 | gst_element_set_state (m_playbin, GST_STATE_NULL); |
| 981 | gst_object_unref (GST_OBJECT (m_playbin)); |
| 982 | delete m_eventHandler; |
| 983 | } |
| 984 | } |
| 985 | |
| 986 | //----------------------------------------------------------------------------- |
| 987 | // wxGStreamerMediaBackend::CreateControl |
| 988 | // |
| 989 | // Initializes GStreamer and creates the wx side of our media control |
| 990 | //----------------------------------------------------------------------------- |
| 991 | bool wxGStreamerMediaBackend::CreateControl(wxControl* ctrl, wxWindow* parent, |
| 992 | wxWindowID id, |
| 993 | const wxPoint& pos, |
| 994 | const wxSize& size, |
| 995 | long style, |
| 996 | const wxValidator& validator, |
| 997 | const wxString& name) |
| 998 | { |
| 999 | // |
| 1000 | //init gstreamer |
| 1001 | // |
| 1002 | |
| 1003 | //Convert arguments to unicode if enabled |
| 1004 | #if wxUSE_UNICODE |
| 1005 | int i; |
| 1006 | char **argvGST = new char*[wxTheApp->argc + 1]; |
| 1007 | for ( i = 0; i < wxTheApp->argc; i++ ) |
| 1008 | { |
| 1009 | argvGST[i] = wxStrdupA(wxConvUTF8.cWX2MB(wxTheApp->argv[i])); |
| 1010 | } |
| 1011 | |
| 1012 | argvGST[wxTheApp->argc] = NULL; |
| 1013 | |
| 1014 | int argcGST = wxTheApp->argc; |
| 1015 | #else |
| 1016 | #define argcGST wxTheApp->argc |
| 1017 | #define argvGST wxTheApp->argv |
| 1018 | #endif |
| 1019 | |
| 1020 | //Really init gstreamer |
| 1021 | gboolean bInited; |
| 1022 | GError* error = NULL; |
| 1023 | #if GST_VERSION_MAJOR > 0 || GST_VERSION_MINOR >= 10 |
| 1024 | bInited = gst_init_check(&argcGST, &argvGST, &error); |
| 1025 | #else |
| 1026 | bInited = gst_init_check(&argcGST, &argvGST); |
| 1027 | #endif |
| 1028 | |
| 1029 | // Cleanup arguments for unicode case |
| 1030 | #if wxUSE_UNICODE |
| 1031 | for ( i = 0; i < argcGST; i++ ) |
| 1032 | { |
| 1033 | free(argvGST[i]); |
| 1034 | } |
| 1035 | |
| 1036 | delete [] argvGST; |
| 1037 | #endif |
| 1038 | |
| 1039 | if(!bInited) //gst_init_check fail? |
| 1040 | { |
| 1041 | if(error) |
| 1042 | { |
| 1043 | wxLogSysError(wxT("Could not initialize GStreamer\n") |
| 1044 | wxT("Error Message:%s"), |
| 1045 | (const wxChar*) wxConvUTF8.cMB2WX(error->message) |
| 1046 | ); |
| 1047 | g_error_free(error); |
| 1048 | } |
| 1049 | else |
| 1050 | wxLogSysError(wxT("Could not initialize GStreamer")); |
| 1051 | |
| 1052 | return false; |
| 1053 | } |
| 1054 | |
| 1055 | // |
| 1056 | // wxControl creation |
| 1057 | // |
| 1058 | m_ctrl = wxStaticCast(ctrl, wxMediaCtrl); |
| 1059 | |
| 1060 | #ifdef __WXGTK__ |
| 1061 | // We handle our own GTK expose events |
| 1062 | m_ctrl->m_noExpose = true; |
| 1063 | #endif |
| 1064 | |
| 1065 | if( !m_ctrl->wxControl::Create(parent, id, pos, size, |
| 1066 | style, // TODO: remove borders??? |
| 1067 | validator, name) ) |
| 1068 | { |
| 1069 | wxFAIL_MSG(wxT("Could not create wxControl!!!")); |
| 1070 | return false; |
| 1071 | } |
| 1072 | |
| 1073 | #ifdef __WXGTK__ |
| 1074 | // Turn off double-buffering so that |
| 1075 | // so it doesn't draw over the video and cause sporadic |
| 1076 | // disappearances of the video |
| 1077 | gtk_widget_set_double_buffered(m_ctrl->m_wxwindow, FALSE); |
| 1078 | #endif |
| 1079 | |
| 1080 | // don't erase the background of our control window |
| 1081 | // so that resizing is a bit smoother |
| 1082 | m_ctrl->SetBackgroundStyle(wxBG_STYLE_CUSTOM); |
| 1083 | |
| 1084 | // Create our playbin object |
| 1085 | m_playbin = gst_element_factory_make ("playbin", "play"); |
| 1086 | if (!GST_IS_ELEMENT(m_playbin)) |
| 1087 | { |
| 1088 | if(G_IS_OBJECT(m_playbin)) |
| 1089 | g_object_unref(m_playbin); |
| 1090 | wxLogSysError(wxT("Got an invalid playbin")); |
| 1091 | return false; |
| 1092 | } |
| 1093 | |
| 1094 | #if GST_VERSION_MAJOR == 0 && GST_VERSION_MINOR < 10 |
| 1095 | // Connect the glib events/callbacks we want to our playbin |
| 1096 | g_signal_connect(m_playbin, "eos", |
| 1097 | G_CALLBACK(gst_finish_callback), this); |
| 1098 | g_signal_connect(m_playbin, "error", |
| 1099 | G_CALLBACK(gst_error_callback), this); |
| 1100 | g_signal_connect(m_playbin, "state-change", |
| 1101 | G_CALLBACK(gst_state_change_callback), this); |
| 1102 | #else |
| 1103 | // GStreamer 0.10+ uses GstBus for this now, connect to the sync |
| 1104 | // handler as well so we can set the X window id of our xoverlay |
| 1105 | gst_bus_add_watch (gst_element_get_bus(m_playbin), |
| 1106 | (GstBusFunc) gst_bus_async_callback, this); |
| 1107 | gst_bus_set_sync_handler(gst_element_get_bus(m_playbin), |
| 1108 | (GstBusSyncHandler) gst_bus_sync_callback, this); |
| 1109 | g_signal_connect(m_playbin, "notify::stream-info", |
| 1110 | G_CALLBACK(gst_notify_stream_info_callback), this); |
| 1111 | #endif |
| 1112 | |
| 1113 | // Get the audio sink |
| 1114 | GstElement* audiosink = gst_gconf_get_default_audio_sink(); |
| 1115 | if( !TryAudioSink(audiosink) ) |
| 1116 | { |
| 1117 | // fallback to autodetection, then alsa, then oss as a stopgap |
| 1118 | audiosink = gst_element_factory_make ("autoaudiosink", "audio-sink"); |
| 1119 | if( !TryAudioSink(audiosink) ) |
| 1120 | { |
| 1121 | audiosink = gst_element_factory_make ("alsasink", "alsa-output"); |
| 1122 | if( !TryAudioSink(audiosink) ) |
| 1123 | { |
| 1124 | audiosink = gst_element_factory_make ("osssink", "play_audio"); |
| 1125 | if( !TryAudioSink(audiosink) ) |
| 1126 | { |
| 1127 | wxLogSysError(wxT("Could not find a valid audiosink")); |
| 1128 | return false; |
| 1129 | } |
| 1130 | } |
| 1131 | } |
| 1132 | } |
| 1133 | |
| 1134 | // Setup video sink - first try gconf, then auto, then xvimage and |
| 1135 | // then finally plain ximage |
| 1136 | GstElement* videosink = gst_gconf_get_default_video_sink(); |
| 1137 | if( !TryVideoSink(videosink) ) |
| 1138 | { |
| 1139 | videosink = gst_element_factory_make ("autovideosink", "video-sink"); |
| 1140 | if( !TryVideoSink(videosink) ) |
| 1141 | { |
| 1142 | videosink = gst_element_factory_make ("xvimagesink", "video-sink"); |
| 1143 | if( !TryVideoSink(videosink) ) |
| 1144 | { |
| 1145 | // finally, do a final fallback to ximagesink |
| 1146 | videosink = |
| 1147 | gst_element_factory_make ("ximagesink", "video-sink"); |
| 1148 | if( !TryVideoSink(videosink) ) |
| 1149 | { |
| 1150 | g_object_unref(audiosink); |
| 1151 | wxLogSysError(wxT("Could not find a suitable video sink")); |
| 1152 | return false; |
| 1153 | } |
| 1154 | } |
| 1155 | } |
| 1156 | } |
| 1157 | |
| 1158 | #if GST_VERSION_MAJOR == 0 && GST_VERSION_MINOR < 10 |
| 1159 | // Not on 0.10... called when video size changes |
| 1160 | g_signal_connect(m_xoverlay, "desired-size-changed", |
| 1161 | G_CALLBACK(gst_desired_size_changed_callback), this); |
| 1162 | #endif |
| 1163 | // Tell GStreamer which window to draw to in 0.8 - 0.10 |
| 1164 | // sometimes needs this too... |
| 1165 | SetupXOverlay(); |
| 1166 | |
| 1167 | // Now that we know (or, rather think) our video and audio sink |
| 1168 | // are valid set our playbin to use them |
| 1169 | g_object_set (G_OBJECT (m_playbin), |
| 1170 | "video-sink", videosink, |
| 1171 | "audio-sink", audiosink, |
| 1172 | NULL); |
| 1173 | |
| 1174 | m_eventHandler = new wxGStreamerMediaEventHandler(this); |
| 1175 | return true; |
| 1176 | } |
| 1177 | |
| 1178 | //----------------------------------------------------------------------------- |
| 1179 | // wxGStreamerMediaBackend::Load (File version) |
| 1180 | // |
| 1181 | // Just calls DoLoad() with a prepended file scheme |
| 1182 | //----------------------------------------------------------------------------- |
| 1183 | bool wxGStreamerMediaBackend::Load(const wxString& fileName) |
| 1184 | { |
| 1185 | return DoLoad(wxString( wxT("file://") ) + fileName); |
| 1186 | } |
| 1187 | |
| 1188 | //----------------------------------------------------------------------------- |
| 1189 | // wxGStreamerMediaBackend::Load (URI version) |
| 1190 | // |
| 1191 | // In the case of a file URI passes it unencoded - |
| 1192 | // also, as of 0.10.3 and earlier GstURI (the uri parser for gstreamer) |
| 1193 | // is sort of broken and only accepts uris with at least two slashes |
| 1194 | // after the scheme (i.e. file: == not ok, file:// == ok) |
| 1195 | //----------------------------------------------------------------------------- |
| 1196 | bool wxGStreamerMediaBackend::Load(const wxURI& location) |
| 1197 | { |
| 1198 | if(location.GetScheme().CmpNoCase(wxT("file")) == 0) |
| 1199 | { |
| 1200 | wxString uristring = location.BuildUnescapedURI(); |
| 1201 | |
| 1202 | //Workaround GstURI leading "//" problem and make sure it leads |
| 1203 | //with that |
| 1204 | return DoLoad(wxString(wxT("file://")) + |
| 1205 | uristring.Right(uristring.length() - 5) |
| 1206 | ); |
| 1207 | } |
| 1208 | else |
| 1209 | return DoLoad(location.BuildURI()); |
| 1210 | } |
| 1211 | |
| 1212 | //----------------------------------------------------------------------------- |
| 1213 | // wxGStreamerMediaBackend::DoLoad |
| 1214 | // |
| 1215 | // Loads the media |
| 1216 | // 1) Reset member variables and set playbin back to ready state |
| 1217 | // 2) Check URI for validity and then tell the playbin to load it |
| 1218 | // 3) Set the playbin to the pause state |
| 1219 | // |
| 1220 | // NB: Even after this function is over with we probably don't have the |
| 1221 | // video size or duration - no amount of clever hacking is going to get |
| 1222 | // around that, unfortunately. |
| 1223 | //----------------------------------------------------------------------------- |
| 1224 | bool wxGStreamerMediaBackend::DoLoad(const wxString& locstring) |
| 1225 | { |
| 1226 | wxMutexLocker lock(m_asynclock); // lock state events and async callbacks |
| 1227 | |
| 1228 | // Reset positions & rate |
| 1229 | m_llPausedPos = 0; |
| 1230 | m_dRate = 1.0; |
| 1231 | m_videoSize = wxSize(0,0); |
| 1232 | |
| 1233 | // Set playbin to ready to stop the current media... |
| 1234 | if( gst_element_set_state (m_playbin, |
| 1235 | GST_STATE_READY) == GST_STATE_FAILURE || |
| 1236 | !SyncStateChange(m_playbin, GST_STATE_READY)) |
| 1237 | { |
| 1238 | wxLogSysError(wxT("wxGStreamerMediaBackend::Load - ") |
| 1239 | wxT("Could not set initial state to ready")); |
| 1240 | return false; |
| 1241 | } |
| 1242 | |
| 1243 | // free current media resources |
| 1244 | gst_element_set_state (m_playbin, GST_STATE_NULL); |
| 1245 | |
| 1246 | // Make sure the passed URI is valid and tell playbin to load it |
| 1247 | // non-file uris are encoded |
| 1248 | wxASSERT(gst_uri_protocol_is_valid("file")); |
| 1249 | wxASSERT(gst_uri_is_valid(locstring.mb_str())); |
| 1250 | |
| 1251 | g_object_set (G_OBJECT (m_playbin), "uri", |
| 1252 | (const char*)locstring.mb_str(), NULL); |
| 1253 | |
| 1254 | // Try to pause media as gstreamer won't let us query attributes |
| 1255 | // such as video size unless it is paused or playing |
| 1256 | if( gst_element_set_state (m_playbin, |
| 1257 | GST_STATE_PAUSED) == GST_STATE_FAILURE || |
| 1258 | !SyncStateChange(m_playbin, GST_STATE_PAUSED)) |
| 1259 | { |
| 1260 | return false; // no real error message needed here as this is |
| 1261 | // generic failure 99% of the time (i.e. no |
| 1262 | // source etc.) and has an error message |
| 1263 | } |
| 1264 | |
| 1265 | |
| 1266 | NotifyMovieLoaded(); // Notify the user - all we can do for now |
| 1267 | return true; |
| 1268 | } |
| 1269 | |
| 1270 | |
| 1271 | //----------------------------------------------------------------------------- |
| 1272 | // wxGStreamerMediaBackend::Play |
| 1273 | // |
| 1274 | // Sets the stream to a playing state |
| 1275 | // |
| 1276 | // THREAD-UNSAFE in 0.8, maybe in 0.10 as well |
| 1277 | //----------------------------------------------------------------------------- |
| 1278 | bool wxGStreamerMediaBackend::Play() |
| 1279 | { |
| 1280 | if (gst_element_set_state (m_playbin, |
| 1281 | GST_STATE_PLAYING) == GST_STATE_FAILURE) |
| 1282 | return false; |
| 1283 | return true; |
| 1284 | } |
| 1285 | |
| 1286 | //----------------------------------------------------------------------------- |
| 1287 | // wxGStreamerMediaBackend::Pause |
| 1288 | // |
| 1289 | // Marks where we paused and pauses the stream |
| 1290 | // |
| 1291 | // THREAD-UNSAFE in 0.8, maybe in 0.10 as well |
| 1292 | //----------------------------------------------------------------------------- |
| 1293 | bool wxGStreamerMediaBackend::Pause() |
| 1294 | { |
| 1295 | m_llPausedPos = wxGStreamerMediaBackend::GetPosition(); |
| 1296 | if (gst_element_set_state (m_playbin, |
| 1297 | GST_STATE_PAUSED) == GST_STATE_FAILURE) |
| 1298 | return false; |
| 1299 | return true; |
| 1300 | } |
| 1301 | |
| 1302 | //----------------------------------------------------------------------------- |
| 1303 | // wxGStreamerMediaBackend::Stop |
| 1304 | // |
| 1305 | // Pauses the stream and sets the position to 0. Note that this is |
| 1306 | // synchronous (!) pausing. |
| 1307 | // |
| 1308 | // Due to the mutex locking this is probably thread-safe actually. |
| 1309 | //----------------------------------------------------------------------------- |
| 1310 | bool wxGStreamerMediaBackend::Stop() |
| 1311 | { |
| 1312 | { // begin state lock |
| 1313 | wxMutexLocker lock(m_asynclock); |
| 1314 | if(gst_element_set_state (m_playbin, |
| 1315 | GST_STATE_PAUSED) == GST_STATE_FAILURE || |
| 1316 | !SyncStateChange(m_playbin, GST_STATE_PAUSED)) |
| 1317 | { |
| 1318 | wxLogSysError(wxT("Could not set state to paused for Stop()")); |
| 1319 | return false; |
| 1320 | } |
| 1321 | } // end state lock |
| 1322 | |
| 1323 | bool bSeekedOK = wxGStreamerMediaBackend::SetPosition(0); |
| 1324 | |
| 1325 | if(!bSeekedOK) |
| 1326 | { |
| 1327 | wxLogSysError(wxT("Could not seek to initial position in Stop()")); |
| 1328 | return false; |
| 1329 | } |
| 1330 | |
| 1331 | QueueStopEvent(); // Success |
| 1332 | return true; |
| 1333 | } |
| 1334 | |
| 1335 | //----------------------------------------------------------------------------- |
| 1336 | // wxGStreamerMediaBackend::GetState |
| 1337 | // |
| 1338 | // Gets the state of the media |
| 1339 | //----------------------------------------------------------------------------- |
| 1340 | wxMediaState wxGStreamerMediaBackend::GetState() |
| 1341 | { |
| 1342 | switch(GST_STATE(m_playbin)) |
| 1343 | { |
| 1344 | case GST_STATE_PLAYING: |
| 1345 | return wxMEDIASTATE_PLAYING; |
| 1346 | case GST_STATE_PAUSED: |
| 1347 | if (m_llPausedPos == 0) |
| 1348 | return wxMEDIASTATE_STOPPED; |
| 1349 | else |
| 1350 | return wxMEDIASTATE_PAUSED; |
| 1351 | default://case GST_STATE_READY: |
| 1352 | return wxMEDIASTATE_STOPPED; |
| 1353 | } |
| 1354 | } |
| 1355 | |
| 1356 | //----------------------------------------------------------------------------- |
| 1357 | // wxGStreamerMediaBackend::GetPosition |
| 1358 | // |
| 1359 | // If paused, returns our marked position - otherwise it queries the |
| 1360 | // GStreamer playbin for the position and returns that |
| 1361 | // |
| 1362 | // NB: |
| 1363 | // NB: At least in 0.8, when you pause and seek gstreamer |
| 1364 | // NB: doesn't update the position sometimes, so we need to keep track of |
| 1365 | // NB: whether we have paused or not and keep track of the time after the |
| 1366 | // NB: pause and whenever the user seeks while paused |
| 1367 | // NB: |
| 1368 | // |
| 1369 | // THREAD-UNSAFE, at least if not paused. Requires media to be at least paused. |
| 1370 | //----------------------------------------------------------------------------- |
| 1371 | wxLongLong wxGStreamerMediaBackend::GetPosition() |
| 1372 | { |
| 1373 | if(GetState() != wxMEDIASTATE_PLAYING) |
| 1374 | return m_llPausedPos; |
| 1375 | else |
| 1376 | { |
| 1377 | gint64 pos; |
| 1378 | GstFormat fmtTime = GST_FORMAT_TIME; |
| 1379 | |
| 1380 | if (!wxGst_element_query_position(m_playbin, &fmtTime, &pos) || |
| 1381 | fmtTime != GST_FORMAT_TIME || pos == -1) |
| 1382 | return 0; |
| 1383 | return pos / GST_MSECOND ; |
| 1384 | } |
| 1385 | } |
| 1386 | |
| 1387 | //----------------------------------------------------------------------------- |
| 1388 | // wxGStreamerMediaBackend::SetPosition |
| 1389 | // |
| 1390 | // Sets the position of the stream |
| 1391 | // Note that GST_MSECOND is 1000000 (GStreamer uses nanoseconds - so |
| 1392 | // there is 1000000 nanoseconds in a millisecond) |
| 1393 | // |
| 1394 | // If we are paused we update the cached pause position. |
| 1395 | // |
| 1396 | // This is also an exceedingly ugly function due to the three implementations |
| 1397 | // (or, rather two plus one implementation without a seek function). |
| 1398 | // |
| 1399 | // This is asynchronous and thread-safe on both 0.8 and 0.10. |
| 1400 | // |
| 1401 | // NB: This fires both a stop and play event if the media was previously |
| 1402 | // playing... which in some ways makes sense. And yes, this makes the video |
| 1403 | // go all haywire at times - a gstreamer bug... |
| 1404 | //----------------------------------------------------------------------------- |
| 1405 | bool wxGStreamerMediaBackend::SetPosition(wxLongLong where) |
| 1406 | { |
| 1407 | #if GST_VERSION_MAJOR == 0 && GST_VERSION_MINOR == 8 \ |
| 1408 | && GST_VERSION_MICRO == 0 |
| 1409 | // 0.8.0 has no gst_element_seek according to official docs!!! |
| 1410 | wxLogSysError(wxT("GStreamer 0.8.0 does not have gst_element_seek") |
| 1411 | wxT(" according to official docs")); |
| 1412 | return false; |
| 1413 | #else // != 0.8.0 |
| 1414 | |
| 1415 | # if GST_VERSION_MAJOR > 0 || GST_VERSION_MINOR >= 10 |
| 1416 | gst_element_seek (m_playbin, m_dRate, GST_FORMAT_TIME, |
| 1417 | (GstSeekFlags)(GST_SEEK_FLAG_FLUSH | GST_SEEK_FLAG_KEY_UNIT), |
| 1418 | GST_SEEK_TYPE_SET, where.GetValue() * GST_MSECOND, |
| 1419 | GST_SEEK_TYPE_NONE, GST_CLOCK_TIME_NONE ); |
| 1420 | # else |
| 1421 | // NB: Some gstreamer versions return false basically all the time |
| 1422 | // here - even totem doesn't bother to check the return value here |
| 1423 | // so I guess we'll just assume it worked - |
| 1424 | // TODO: maybe check the gst error callback??? |
| 1425 | gst_element_seek (m_playbin, (GstSeekType) (GST_SEEK_METHOD_SET | |
| 1426 | GST_FORMAT_TIME | GST_SEEK_FLAG_FLUSH), |
| 1427 | where.GetValue() * GST_MSECOND ); |
| 1428 | |
| 1429 | # endif // GST_VERSION_MAJOR > 0 || GST_VERSION_MINOR >= 10 |
| 1430 | |
| 1431 | { |
| 1432 | m_llPausedPos = where; |
| 1433 | return true; |
| 1434 | } |
| 1435 | return true; |
| 1436 | #endif //== 0.8.0 |
| 1437 | } |
| 1438 | |
| 1439 | //----------------------------------------------------------------------------- |
| 1440 | // wxGStreamerMediaBackend::GetDuration |
| 1441 | // |
| 1442 | // Obtains the total time of our stream |
| 1443 | // THREAD-UNSAFE, requires media to be paused or playing |
| 1444 | //----------------------------------------------------------------------------- |
| 1445 | wxLongLong wxGStreamerMediaBackend::GetDuration() |
| 1446 | { |
| 1447 | gint64 length; |
| 1448 | GstFormat fmtTime = GST_FORMAT_TIME; |
| 1449 | |
| 1450 | if(!wxGst_element_query_duration(m_playbin, &fmtTime, &length) || |
| 1451 | fmtTime != GST_FORMAT_TIME || length == -1) |
| 1452 | return 0; |
| 1453 | return length / GST_MSECOND ; |
| 1454 | } |
| 1455 | |
| 1456 | //----------------------------------------------------------------------------- |
| 1457 | // wxGStreamerMediaBackend::Move |
| 1458 | // |
| 1459 | // Called when the window is moved - GStreamer takes care of this |
| 1460 | // for us so nothing is needed |
| 1461 | //----------------------------------------------------------------------------- |
| 1462 | void wxGStreamerMediaBackend::Move(int x, int y, int w, int h) |
| 1463 | { |
| 1464 | } |
| 1465 | |
| 1466 | //----------------------------------------------------------------------------- |
| 1467 | // wxGStreamerMediaBackend::GetVideoSize |
| 1468 | // |
| 1469 | // Returns our cached video size from Load/gst_notify_caps_callback |
| 1470 | // gst_x_overlay_get_desired_size also does this in 0.8... |
| 1471 | //----------------------------------------------------------------------------- |
| 1472 | wxSize wxGStreamerMediaBackend::GetVideoSize() const |
| 1473 | { |
| 1474 | return m_videoSize; |
| 1475 | } |
| 1476 | |
| 1477 | //----------------------------------------------------------------------------- |
| 1478 | // wxGStreamerMediaBackend::GetPlaybackRate |
| 1479 | // wxGStreamerMediaBackend::SetPlaybackRate |
| 1480 | // |
| 1481 | // Obtains/Sets the playback rate of the stream |
| 1482 | // |
| 1483 | //TODO: PlaybackRate not currently supported via playbin directly - |
| 1484 | //TODO: Ronald S. Bultje noted on gstreamer-devel: |
| 1485 | //TODO: |
| 1486 | //TODO: Like "play at twice normal speed"? Or "play at 25 fps and 44,1 kHz"? As |
| 1487 | //TODO: for the first, yes, we have elements for that, btu they"re not part of |
| 1488 | //TODO: playbin. You can create a bin (with a ghost pad) containing the actual |
| 1489 | //TODO: video/audiosink and the speed-changing element for this, and set that |
| 1490 | //TODO: element as video-sink or audio-sink property in playbin. The |
| 1491 | //TODO: audio-element is called "speed", the video-element is called "videodrop" |
| 1492 | //TODO: (although that appears to be deprecated in favour of "videorate", which |
| 1493 | //TODO: again cannot do this, so this may not work at all in the end). For |
| 1494 | //TODO: forcing frame/samplerates, see audioscale and videorate. Audioscale is |
| 1495 | //TODO: part of playbin. |
| 1496 | // |
| 1497 | // In 0.10 GStreamer has new gst_element_seek API that might |
| 1498 | // support this - and I've got an attempt to do so but it is untested |
| 1499 | // but it would appear to work... |
| 1500 | //----------------------------------------------------------------------------- |
| 1501 | double wxGStreamerMediaBackend::GetPlaybackRate() |
| 1502 | { |
| 1503 | return m_dRate; // Could use GST_QUERY_RATE but the API doesn't seem |
| 1504 | // final on that yet and there may not be any actual |
| 1505 | // plugins that support it... |
| 1506 | } |
| 1507 | |
| 1508 | bool wxGStreamerMediaBackend::SetPlaybackRate(double dRate) |
| 1509 | { |
| 1510 | #if GST_VERSION_MAJOR > 0 || GST_VERSION_MINOR >= 10 |
| 1511 | #if 0 // not tested enough |
| 1512 | if( gst_element_seek (m_playbin, dRate, GST_FORMAT_TIME, |
| 1513 | (GstSeekFlags)(GST_SEEK_FLAG_FLUSH | GST_SEEK_FLAG_KEY_UNIT), |
| 1514 | GST_SEEK_TYPE_CUR, 0, |
| 1515 | GST_SEEK_TYPE_NONE, GST_CLOCK_TIME_NONE ) ) |
| 1516 | { |
| 1517 | m_dRate = dRate; |
| 1518 | return true; |
| 1519 | } |
| 1520 | #endif |
| 1521 | #endif |
| 1522 | |
| 1523 | // failure |
| 1524 | return false; |
| 1525 | } |
| 1526 | |
| 1527 | //----------------------------------------------------------------------------- |
| 1528 | // wxGStreamerMediaBackend::GetDownloadProgress |
| 1529 | // |
| 1530 | // Not really outwardly possible - have been suggested that one could |
| 1531 | // get the information from the component that "downloads" |
| 1532 | //----------------------------------------------------------------------------- |
| 1533 | wxLongLong wxGStreamerMediaBackend::GetDownloadProgress() |
| 1534 | { |
| 1535 | return 0; |
| 1536 | } |
| 1537 | |
| 1538 | //----------------------------------------------------------------------------- |
| 1539 | // wxGStreamerMediaBackend::GetDownloadTotal |
| 1540 | // |
| 1541 | // TODO: Cache this? |
| 1542 | // NB: The length changes every call for some reason due to |
| 1543 | // GStreamer implementation issues |
| 1544 | // THREAD-UNSAFE, requires media to be paused or playing |
| 1545 | //----------------------------------------------------------------------------- |
| 1546 | wxLongLong wxGStreamerMediaBackend::GetDownloadTotal() |
| 1547 | { |
| 1548 | gint64 length; |
| 1549 | GstFormat fmtBytes = GST_FORMAT_BYTES; |
| 1550 | |
| 1551 | if (!wxGst_element_query_duration(m_playbin, &fmtBytes, &length) || |
| 1552 | fmtBytes != GST_FORMAT_BYTES || length == -1) |
| 1553 | return 0; |
| 1554 | return length; |
| 1555 | } |
| 1556 | |
| 1557 | //----------------------------------------------------------------------------- |
| 1558 | // wxGStreamerMediaBackend::SetVolume |
| 1559 | // wxGStreamerMediaBackend::GetVolume |
| 1560 | // |
| 1561 | // Sets/Gets the volume through the playbin object. |
| 1562 | // Note that this requires a relatively recent gst-plugins so we |
| 1563 | // check at runtime to see whether it is available or not otherwise |
| 1564 | // GST spits out an error on the command line |
| 1565 | //----------------------------------------------------------------------------- |
| 1566 | bool wxGStreamerMediaBackend::SetVolume(double dVolume) |
| 1567 | { |
| 1568 | if(g_object_class_find_property( |
| 1569 | G_OBJECT_GET_CLASS(G_OBJECT(m_playbin)), |
| 1570 | "volume") != NULL) |
| 1571 | { |
| 1572 | g_object_set(G_OBJECT(m_playbin), "volume", dVolume, NULL); |
| 1573 | return true; |
| 1574 | } |
| 1575 | else |
| 1576 | { |
| 1577 | wxLogTrace(wxTRACE_GStreamer, |
| 1578 | wxT("SetVolume: volume prop not found - 0.8.5 of ") |
| 1579 | wxT("gst-plugins probably needed")); |
| 1580 | return false; |
| 1581 | } |
| 1582 | } |
| 1583 | |
| 1584 | double wxGStreamerMediaBackend::GetVolume() |
| 1585 | { |
| 1586 | double dVolume = 1.0; |
| 1587 | |
| 1588 | if(g_object_class_find_property( |
| 1589 | G_OBJECT_GET_CLASS(G_OBJECT(m_playbin)), |
| 1590 | "volume") != NULL) |
| 1591 | { |
| 1592 | g_object_get(G_OBJECT(m_playbin), "volume", &dVolume, NULL); |
| 1593 | } |
| 1594 | else |
| 1595 | { |
| 1596 | wxLogTrace(wxTRACE_GStreamer, |
| 1597 | wxT("GetVolume: volume prop not found - 0.8.5 of ") |
| 1598 | wxT("gst-plugins probably needed")); |
| 1599 | } |
| 1600 | |
| 1601 | return dVolume; |
| 1602 | } |
| 1603 | |
| 1604 | #endif //wxUSE_GSTREAMER |
| 1605 | |
| 1606 | // Force link into main library so this backend can be loaded |
| 1607 | #include "wx/html/forcelnk.h" |
| 1608 | FORCE_LINK_ME(basewxmediabackends) |
| 1609 | |
| 1610 | #endif //wxUSE_MEDIACTRL |