Fix inconsistent session-check
[ardour.git] / gtk2_ardour / video_image_frame.cc
index 864aca4bb98175386997f3b2b54e391b5c4fcec7..2473da0b4e1f603ada21e2bd96a4941295b4affa 100644 (file)
@@ -1,5 +1,5 @@
 /*
-    Copyright (C) 2010 Paul Davis
+    Copyright (C) 2010, 2013 Paul Davis
     Author: Robin Gareus <robin@gareus.org>
 
     This program is free software; you can redistribute it and/or modify
 #include <sigc++/bind.h>
 #include "ardour/tempo.h"
 
-#include "ardour_ui.h"
-#include "video_image_frame.h"
-#include "public_editor.h"
-#include "utils.h"
-#include "canvas_impl.h"
-#include "simpleline.h"
-#include "rgb_macros.h"
-#include "utils_videotl.h"
-
 #include <gtkmm2ext/utils.h>
 #include <pthread.h>
 
-#include "i18n.h"
+#include "canvas/container.h"
+
+#include "ardour_http.h"
+#include "public_editor.h"
+#include "utils_videotl.h"
+#include "video_image_frame.h"
+
+#include "pbd/i18n.h"
 
 using namespace std;
 using namespace ARDOUR;
 using namespace VideoUtils;
 
-VideoImageFrame::VideoImageFrame (PublicEditor& ed, ArdourCanvas::Group& parent, int w, int h, std::string vsurl, std::string vfn)
+static void freedata_cb (uint8_t *d, void* /*arg*/) {
+       /* later this can be used with libharvid
+        * the buffer/videocacheline instead of freeing it
+        */
+       free (d);
+}
+
+VideoImageFrame::VideoImageFrame (PublicEditor& ed, ArdourCanvas::Container& parent, int w, int h, std::string vsurl, std::string vfn)
        : editor (ed)
        , _parent(&parent)
        , clip_width(w)
@@ -51,144 +56,152 @@ VideoImageFrame::VideoImageFrame (PublicEditor& ed, ArdourCanvas::Group& parent,
        queued_request=false;
        video_frame_number = -1;
        rightend = -1;
-       frame_position = 0;
+       sample_position = 0;
        thread_active=false;
 
-#if 0 /* DEBUG */
-       printf("New VideoImageFrame (%ix%i) %s - %s\n", w, h, vsurl.c_str(), vfn.c_str());
-#endif
-
-       unit_position = editor.frame_to_unit (frame_position);
-       group = new Group (parent, unit_position, 1.0);
-       img_pixbuf = new ArdourCanvas::Pixbuf(*group);
-
-       Glib::RefPtr<Gdk::Pixbuf> img;
-
-       img = Gdk::Pixbuf::create(Gdk::COLORSPACE_RGB, true, 8, clip_width, clip_height);
-       img->fill(RGBA_TO_UINT(0,0,0,255));
-       img_pixbuf->property_pixbuf() = img;
+       unit_position = editor.sample_to_pixel (sample_position);
+       image = new ArdourCanvas::Image (_parent, Cairo::FORMAT_ARGB32, clip_width, clip_height);
 
+       img = image->get_image();
+       fill_frame (0, 0, 0);
        draw_line();
-       video_draw_cross(img_pixbuf->property_pixbuf());
+       draw_x();
+       image->put_image(img);
 
-       group->signal_event().connect (sigc::bind (sigc::mem_fun (editor, &PublicEditor::canvas_videotl_bar_event), _parent));
-       //img_pixbuf->signal_event().connect (sigc::bind (sigc::mem_fun (editor, &PublicEditor::canvas_videotl_bar_event), _parent));
+       image->Event.connect (sigc::bind (sigc::mem_fun (editor, &PublicEditor::canvas_videotl_bar_event), _parent));
 }
 
 VideoImageFrame::~VideoImageFrame ()
 {
        if (thread_active) pthread_join(thread_id_tt, NULL);
-       delete img_pixbuf;
-       delete group;
+       delete image;
        pthread_mutex_destroy(&request_lock);
        pthread_mutex_destroy(&queue_lock);
 }
 
 void
-VideoImageFrame::set_position (framepos_t frame)
+VideoImageFrame::set_position (samplepos_t sample)
 {
-       double new_unit_position = editor.frame_to_unit (frame);
-       group->move (new_unit_position - unit_position, 0.0);
-       frame_position = frame;
+       double new_unit_position = editor.sample_to_pixel (sample);
+       image->move (ArdourCanvas::Duple (new_unit_position - unit_position, 0.0));
+       sample_position = sample;
        unit_position = new_unit_position;
 }
 
 void
 VideoImageFrame::reposition ()
 {
-       set_position (frame_position);
+       set_position (sample_position);
 }
 
 void
-VideoImageFrame::exposeimg ()
-{
-       img_pixbuf->show();
-       /* Note: we can not use this thread to update the window
-        * it needs to be done from the Editor's thread idle_update */
+VideoImageFrame::exposeimg () {
        ImgChanged(); /* EMIT SIGNAL */
 }
 
 void
-VideoImageFrame::set_videoframe (framepos_t videoframenumber, int re)
+VideoImageFrame::set_videoframe (samplepos_t videoframenumber, int re)
 {
        if (video_frame_number == videoframenumber && rightend == re) return;
 
        video_frame_number = videoframenumber;
        rightend = re;
-#if 0 /* dummy mode: print framenumber */
-       gchar buf[16];
-       snprintf (buf, sizeof(buf), "%li", (long int) videoframenumber);
-       img_pixbuf->property_pixbuf() = pixbuf_from_ustring(g_strdup (buf), get_font_for_style (N_("MarkerText")), 80, 60, Gdk::Color ("#C0C0C0"));
-       return;
-#endif
-#if 1 /* draw "empty frame" while we request the data */
-       Glib::RefPtr<Gdk::Pixbuf> img;
-       img = img_pixbuf->property_pixbuf();
-       img->fill(RGBA_TO_UINT(0,0,0,255));
-       video_draw_cross(img_pixbuf->property_pixbuf());
+
+       img = image->get_image();
+       fill_frame (0, 0, 0);
+       draw_x();
        draw_line();
        cut_rightend();
+       image->put_image(img);
        exposeimg();
-#endif
+
        /* request video-frame from decoder in background thread */
-       http_get(video_frame_number);
+       http_get (video_frame_number);
 }
 
 void
 VideoImageFrame::draw_line ()
 {
-       Glib::RefPtr<Gdk::Pixbuf> img;
-       img = img_pixbuf->property_pixbuf();
-
-       int rowstride = img->get_rowstride();
-       int clip_height = img->get_height();
-       int n_channels = img->get_n_channels();
-       guchar *pixels, *p;
-       pixels = img->get_pixels();
+       const int rowstride = img->stride;
+       const int clip_height = img->height;
+       uint8_t *pixels, *p;
+       pixels = img->data;
 
        int y;
-       for (y=0;y<clip_height;y++) {
+       for (y = 0;y < clip_height; y++) {
                p = pixels + y * rowstride;
-               p[0] = 255; p[1] = 255; p[2] = 255;
-               if (n_channels>3) p[3] = 255;
+               p[0] = 255; p[1] = 255; p[2] = 255; p[3] = 255;
+       }
+}
+
+void
+VideoImageFrame::fill_frame (const uint8_t r, const uint8_t g, const uint8_t b)
+{
+       const int rowstride = img->stride;
+       const int clip_height = img->height;
+       const int clip_width = img->width;
+       uint8_t *pixels, *p;
+       pixels = img->data;
+
+       int x,y;
+       for (y = 0; y < clip_height; ++y) {
+               for (x = 0; x < clip_width; ++x) {
+                       p = pixels + y * rowstride + x * 4;
+                       p[0] = b; p[1] = g; p[2] = r; p[3] = 255;
+               }
+       }
+}
+
+void
+VideoImageFrame::draw_x ()
+{
+       int x,y;
+       const int rowstride = img->stride;
+       const int clip_width = img->width;
+       const int clip_height = img->height;
+       uint8_t *pixels, *p;
+       pixels = img->data;
+
+       for (x = 0;x < clip_width; x++) {
+               y = clip_height * x / clip_width;
+               p = pixels + y * rowstride + x * 4;
+               p[0] = 192; p[1] = 192; p[2] = 192; p[3] = 255;
+               p = pixels + y * rowstride + (clip_width-x-1) * 4;
+               p[0] = 192; p[1] = 192; p[2] = 192; p[3] = 255;
        }
 }
 
 void
 VideoImageFrame::cut_rightend ()
 {
+
        if (rightend < 0 ) { return; }
-       Glib::RefPtr<Gdk::Pixbuf> img;
-       img = img_pixbuf->property_pixbuf();
-
-       int rowstride = img->get_rowstride();
-       int clip_height = img->get_height();
-       int clip_width = img->get_width();
-       int n_channels = img->get_n_channels();
-       guchar *pixels, *p;
-       pixels = img->get_pixels();
+
+       const int rowstride = img->stride;
+       const int clip_height = img->height;
+       const int clip_width = img->width;
+       uint8_t *pixels, *p;
+       pixels = img->data;
        if (rightend > clip_width) { return; }
 
        int x,y;
-       for (y=0;y<clip_height;++y) {
-               p = pixels + y * rowstride + rightend * n_channels;
-               p[0] = 192; p[1] = 127; p[2] = 127;
-               if (n_channels>3) p[3] = 255;
-               for (x=rightend+1; x<clip_width; ++x) {
-                       p = pixels + y * rowstride + x * n_channels;
-                       p[0] = 0; p[1] = 0; p[2] = 0;
-                       if (n_channels>3) p[3] = 0;
+       for (y = 0;y < clip_height; ++y) {
+               p = pixels + y * rowstride + rightend * 4;
+               p[0] = 192; p[1] = 192; p[2] = 192; p[3] = 255;
+               for (x=rightend+1; x < clip_width; ++x) {
+                       p = pixels + y * rowstride + x * 4;
+                       p[0] = 0; p[1] = 0; p[2] = 0; p[3] = 0;
                }
        }
 }
 
-void *
+static void *
 http_get_thread (void *arg) {
        VideoImageFrame *vif = static_cast<VideoImageFrame *>(arg);
        char url[2048];
        pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL);
        pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, NULL);
-       snprintf(url, sizeof(url), "%s?frame=%li&w=%d&h=%di&file=%s&format=rgb",
+       snprintf(url, sizeof(url), "%s?frame=%li&w=%d&h=%d&file=%s&format=bgra",
          vif->get_video_server_url().c_str(),
          (long int) vif->get_req_frame(), vif->get_width(), vif->get_height(),
          vif->get_video_filename().c_str()
@@ -197,8 +210,8 @@ http_get_thread (void *arg) {
        int timeout = 1000; // * 5ms -> 5sec
        char *res = NULL;
        do {
-               res=a3_curl_http_get(url, &status);
-               if (status == 503) usleep(5000); // try-again
+               res = ArdourCurl::http_get (url, &status, false);
+               if (status == 503) Glib::usleep(5000); // try-again
        } while (status == 503 && --timeout > 0);
 
        if (status != 200 || !res) {
@@ -220,29 +233,20 @@ VideoImageFrame::http_download_done (char *data){
 
        if (!data) {
                /* Image request failed (HTTP error or timeout) */
-               Glib::RefPtr<Gdk::Pixbuf> img;
-               img = img_pixbuf->property_pixbuf();
-               img->fill(RGBA_TO_UINT(128,0,0,255));
-               video_draw_cross(img_pixbuf->property_pixbuf());
+               img = image->get_image();
+               fill_frame (128, 0, 0);
+               draw_x();
                cut_rightend();
                draw_line();
                cut_rightend();
-               /* TODO: mark as invalid:
-                * video_frame_number = -1;
-                * TODO: but prevent live-loops when calling update again
-                */
+               image->put_image(img);
        } else {
-               Glib::RefPtr<Gdk::Pixbuf> tmp, img;
-#if 0 // RGBA
-               tmp = Gdk::Pixbuf::create_from_data ((guint8*) data, Gdk::COLORSPACE_RGB, true, 8, clip_width, clip_height, clip_width*4);
-#else // RGB
-               tmp = Gdk::Pixbuf::create_from_data ((guint8*) data, Gdk::COLORSPACE_RGB, false, 8, clip_width, clip_height, clip_width*3);
-#endif
-               img = img_pixbuf->property_pixbuf();
-               tmp->copy_area (0, 0, clip_width, clip_height, img, 0, 0);
-               free(data);
+               img = image->get_image(false);
+               img->data = (uint8_t*) data;
+               img->destroy_callback = &freedata_cb;
                draw_line();
                cut_rightend();
+               image->put_image(img);
        }
 
        exposeimg();
@@ -257,26 +261,13 @@ VideoImageFrame::http_download_done (char *data){
 
 
 void
-VideoImageFrame::http_get(framepos_t fn) {
+VideoImageFrame::http_get (samplepos_t fn) {
        if (pthread_mutex_trylock(&request_lock)) {
-               /* remember last request and schedule after the lock has been released. */
                pthread_mutex_lock(&queue_lock);
                queued_request=true;
                want_video_frame_number=fn;
                pthread_mutex_unlock(&queue_lock);
-#if 0
-               /* TODO: cancel request and start a new one
-                *  but only if we're waiting for curl request.
-                *  don't interrupt http_download_done()
-                *
-                *  This should work, but requires testing:
-                */
-               if (!pthread_cancel(thread_id_tt)) {
-                       pthread_mutex_unlock(&request_lock);
-               } else return;
-#else
                return;
-#endif
        }
        if (thread_active) pthread_join(thread_id_tt, NULL);
        pthread_mutex_lock(&queue_lock);
@@ -293,7 +284,7 @@ VideoImageFrame::http_get(framepos_t fn) {
 }
 
 void
-VideoImageFrame::http_get_again(framepos_t /*fn*/) {
+VideoImageFrame::http_get_again(samplepos_t /*fn*/) {
        pthread_mutex_lock(&queue_lock);
        queued_request=false;
        req_video_frame_number=want_video_frame_number;