tests/icles/gdkpixbufoverlay-test.c

   1 /* GStreamer gdkpixbufoverlay test app
   2  * Copyright (C) 2014 Tim-Philipp Müller <tim centricular com>
   3
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
  17  * Boston, MA 02110-1301, USA.
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #include "config.h"
  22 #endif
  23
  24 #include <gio/gio.h>
  25 #include <gst/gst.h>
  26 #include <gst/video/video.h>
  27 #include <gdk-pixbuf/gdk-pixbuf.h>
  28
  29 #include <math.h>
  30
  31 #define VIDEO_WIDTH 720
  32 #define VIDEO_HEIGHT 480
  33 #define VIDEO_FPS 50
  34
  35 /* GdkPixbuf RGBA C-Source image dump from gdk-pixbuf-csource --raw,
  36  * gzipped and then base64 encoded */
  37 const gchar gzipped_pixdata_base64[] =
  38     "H4sICPX/Z1QAA2xvZ28ucGl4AO2dsZHrNhCG+ewK2II64ClyrhmnTtSBh4kLUOLQAUuwEhSgFtiA"
  39     "A7agwA2wBT5AXJ5w4P5LgKLEO97ezDf2SCAIAftjFwuQ7/c///ojy/77+8eP7Jcs+/WfLMv+t/zW"
  40     "dV32pSmK3HK6sXZbFOXV9PZfWipLbWksHdHQZxVpZP+Ee7u62/d7rt0fivIqimJnOX+w/zhauq68"
  41     "aWjevfdUR1h3vXq/KMqzufueFN1J1FE+stf8KfCzobZ3q/ePojyT3v8gDSyB09GFND7g/N014rpl"
  42     "41xF+Wz0/i817nwFjepP+Rb0PnDwOUOehePyQq1eurlrSkXZOkVx7OblbGK43upf+zcqyldhOT22"
  43     "5GvV9ynKXIriQDpKye242Ldcve2KskX6deaRWVeebnpdu32Koryc4t/iaKksmm9Vvg3W3neWk+Vs"
  44     "qS2tpSOu9NmZtLG4f7R15paS7jXct1q7XxTl2ZDd157dp1A/6q9I+1Wg+QH1g8pmcb7M0szUHseV"
  45     "/KTTtJg39XyudH/NASmbhfzOUtqTNHmhew1cglhT9ad8O16kv7m4eFT3/pVNQ77IX8shLgW/RnsW"
  46     "Li7V5y4UJaDo9wnOT9Sjq1fzn4oSQXHft4tZ00Vpr5jI3yiKwmO1sy/63GZKzNpS+dVyLsaYneVk"
  47     "Ud+rbIqi32M/kC7DtaXzn6vt9Vm95ZbS0lg64rx2nynKdyHQ3oC+A06ZxdtbkztWundpqS1fKo5j"
  48     "9OfQ8+jKJNbW987eye47QGO5WE6u/BPakJP2rt4927X7JhanNaBBzQUpEMbmU2hJk66O2ftt7lrS"
  49     "f8vc4yl+0P7llspyWapOl3th9Hdde4yVz4m17eMD2pP8ZBXjI0l3J7oG1Rf1DlH7dyBOpKuB2+dB"
  50     "2ZzKXS3ugw9+lnKZB49oH2bL1owGH9K4vX5P7Yg+0+O1/Uj/XSRm8ep9Ws6LclrRfe+N1+xYIxjz"
  51     "49Jrh6D+m68inSypPeQja7pXRZp3/z1P6M7XM+xX+7eznElHc3E63Hv2xWmoo89H4yLEnpDg+orq"
  52     "DsnJFq7oWqYtLhd7sbTg3i3dL2VO2Xlt5Oo7DzY1Uc8VtOng9eMZtP0ctpnmJa787Tcm/jbUtmHc"
  53     "xfmG+p0bwz0R9t1hYr33WTgj/ZEfe1R7HfnJ3NNCjIbKoP8f1SBn2w2Nq3htYI9o7uBopnRI9nmO"
  54     "rM/ZveijhWulee+DFrx2xZSHe0Gmn99ix5sd96A+1E97w88pB8bX1ABubfYK4DxG+msYPbWWksqU"
  55     "gu5a0u/O68PQ3t99hWF8kW9vC2gQaWTyWtD2sB5UVzOhGeRLJR2y/pB0k9RHgCqxXaP2kP5Qn9TU"
  56     "n+He7rumwO/j5oSr0FanQZf/jIp33+650qXXjSj2FP2+y58AbYVrPs5PjuyOxsTvq5H+yYb8Mofg"
  57     "u8rgmKb2vq/C+lPtMLj2KOjBbyPSqTS3N9T2Y/D5SbAtdt1r4uapoZ9ife+VroHzlQn2ZCf0dw7K"
  58     "7rk2Cn2VMo6z15pP1KPzt5N72LT+4/Q36hv7d+R8INN/oR2zdunZEcyvANuEPj3SNlkNmvHcIY6x"
  59     "4eeHWbkiSfugvBT3jeLYifKdCdaHggbC+Q7Vi+YOriznW5PG8BENAj3G5FYQTsslWvcxuqqABke6"
  60     "oXzoqGyEfcC1kunnXRRvcfOm2N9mOo4szX1df/DnB4P9BbsOMmANNXf8F9TgaB1p5LlppBehfr+/"
  61     "0PiwuhJ+Y+hbpXpbGsNbLtTcc66LPzP31u+rDznPesJPDnnS5Ny2oMGRnSdoEOVERjpE2qTvTmAc"
  62     "pGuQ7Yg5EyP7QDY3gjQozREzNIhiNXTv1Ni1BeOCyvvxOJqzUJtzUD6MWaX1wKd4P9HbgmfdhFwL"
  63     "p0FOr9x6EOngmtKHpt8TGNUxcQ2yTXGeNLL/lHz4Qxo09/0tNN8gH4zainIcyK7ZuF7Q4D6iDal1"
  64     "1kE5ZD+bfD+DsB48BuXy7L7//mEvgulrKWd3iyUi7ZPzS+J6C1wz+XyFkfMWB0D02tHrl2FfMDYX"
  65     "yfUvitXg2QvBrlHMyM4JEW3oqC+5/orymwbEUWtr5ck65PKidVCGy4leh71AZgwlv9JN6VDQsZSP"
  66     "QddM+iUw7nM5BHWn7jWKbRf6VsrJcjEFtGug2dr7HvntOYQa5OanTT8jY//2tMcXauxCuVBOo+9n"
  67     "YYRxnNIhvN7g2AnGI+iamD4w6bnwqN810QctaUM6V8LlDJFPk9a7qfllzmdVEW2Yg18vmkc/xTrw"
  68     "yTqU9uDD/fgK+b9EHcK1nTDGcF0Hrok6Gyu00c33KBZlifztYY6fPbcG2poUqwl2LeWXuXv4OVEp"
  69     "95XUX/6Yoj5bWx8v0F8OfN3g72rS3TFWewk6RHuHXOwkjoXhfVnsOcdFc5xUJ/Jto7gKlEX5xUlN"
  70     "x/T/RNvFvhA0GDXnCfedPY9+ZUhjvu4Wfy5P0CHKoXGaEMci1TYj7sfqJbI+uBfwSNuFelPPXkp+"
  71     "k823BGXQWuGh3AmYRzf9zpKMOfvyYB8uEiuC8ZXO00zuZ020G83rs8Y/xU8gmwcaRPVKa+uk/LLh"
  72     "8y1NUEbKfc+aww3eP/xS73xIBez5XbKPzwuW3H4h6Ec3j6E9ba6PkR9MGgvBNmPbLeXa58TfKRqM"
  73     "brtJPJuTom/vGm4dwJ2lQXmsWe/cM4l7mFtBOCcjPR+B9iMGW4LnGWLHa4bdzNqbj6wj2QYEXYX+"
  74     "JPWMKlcOvpdEaIcUu0blUA1eX7Bnbx7os02/N4iLRSMY7QuacWwSc24YjhXQgxQ/sT4s0QbQs2kO"
  75     "dl1o+hiYs09p/8x/7kPaqw/3GZGfkPbmka9C5wiQ30RzJdp3R2cTh3MKozk6ta1bgfYGUzU42sMX"
  76     "xsP1q4ttuLxfci7Ps18/RwfPI6f2x4QOG087/m8arRlN2vN9yP+G5yiTcpETbUBxCpo7kGZzof3D"
  77     "OwGG56ca7/NwDkdrwc1qUNiXT4Hrx9hn1WLOj0n7wDF7Vcka9Gw39lyL9Gz51P78ebAv1G9BfWiv"
  78     "A2kQ+mKhzbP2aEz8s8DsmWGDfbxjc/+OENDfib4b3uNUejmZqGd8g/5EY3k1CWt2cz9nONR380XM"
  79     "+HPvHlnivU/ce19aA96FA/TsP2984q6jcpeg/f75kTyoxwfFiSW6ZkJLHDHvt8np93Hv3xliCLT2"
  80     "OIEx3OTeILMf2EztCYKYNcYG2fMQivKdYbQUpY1s/M6ZTcbpivJMMv5Zpdhn7mdpV1GUO1l/NjTU"
  81     "Usx7Z8Iz3ZuM0xXlFWT8s4CsDkmzJZPD0ThUUWaSye8THZ6RqOj/uf2L1f79T0XZCpn8vJJ0Pkb9"
  82     "n6IsCOVoBp/HvS+moe83+T4dRVEUZRmyn2F9swl9yAAA";
  83
  84 static GdkPixbuf *logo_pixbuf;
  85
  86 static GMainLoop *main_loop;
  87 static gint count;
  88
  89 static GdkPixbuf *
  90 create_overlay_pixbuf (void)
  91 {
  92   GZlibDecompressor *decompress;
  93   GConverterResult decomp_res;
  94   guchar *gzipped_pixdata, *pixdata;
  95   gsize gzipped_size, bytes_read, pixdata_size;
  96   GdkPixbuf *pixbuf;
  97
  98   gzipped_pixdata = g_base64_decode (gzipped_pixdata_base64, &gzipped_size);
  99   g_assert (gzipped_pixdata != NULL);
 100
 101   pixdata = g_malloc (64 * 1024);
 102
 103   decompress = g_zlib_decompressor_new (G_ZLIB_COMPRESSOR_FORMAT_GZIP);
 104   decomp_res = g_converter_convert (G_CONVERTER (decompress),
 105       gzipped_pixdata, gzipped_size, pixdata, 64 * 1024,
 106       G_CONVERTER_INPUT_AT_END, &bytes_read, &pixdata_size, NULL);
 107   g_assert (decomp_res == G_CONVERTER_FINISHED);
 108   g_assert (bytes_read == gzipped_size);
 109   g_free (gzipped_pixdata);
 110   g_object_unref (decompress);
 111
 112   /* 0: Pixbuf magic (0x47646b50) */
 113   g_assert (GST_READ_UINT32_BE (pixdata) == 0x47646b50);
 114
 115   pixbuf = gdk_pixbuf_new_from_inline (pixdata_size, pixdata, TRUE, NULL);
 116   g_assert (pixbuf != NULL);
 117
 118   g_free (pixdata);
 119
 120   return pixbuf;
 121 }
 122
 123 static gboolean
 124 bus_cb (GstBus * bus, GstMessage * msg, gpointer user_data)
 125 {
 126   GMainLoop *loop = user_data;
 127
 128   switch (GST_MESSAGE_TYPE (msg)) {
 129     case GST_MESSAGE_ERROR:{
 130       GError *err = NULL;
 131       gchar *dbg;
 132
 133       gst_message_parse_error (msg, &err, &dbg);
 134       gst_object_default_error (msg->src, err, dbg);
 135       g_error_free (err);
 136       g_free (dbg);
 137       g_main_loop_quit (loop);
 138       break;
 139     }
 140     default:
 141       break;
 142   }
 143   return TRUE;
 144 }
 145
 146 #define SPEED_SCALE_FACTOR (VIDEO_FPS * 4)
 147
 148 /* nicked from videotestsrc's ball pattern renderer */
 149 static void
 150 calculate_position (gint * x, gint * y, guint logo_w, guint logo_h, guint n)
 151 {
 152   guint r_x = logo_w / 2;
 153   guint r_y = logo_h / 2;
 154   guint w = VIDEO_WIDTH + logo_w;
 155   guint h = VIDEO_HEIGHT + logo_h;
 156
 157   *x = r_x + (0.5 + 0.5 * sin (2 * G_PI * n / SPEED_SCALE_FACTOR))
 158       * (w - 2 * r_x);
 159   *y = r_y + (0.5 + 0.5 * sin (2 * G_PI * sqrt (2) * n / SPEED_SCALE_FACTOR))
 160       * (h - 2 * r_y);
 161
 162   *x -= logo_w;
 163   *y -= logo_h;
 164 }
 165
 166 static GstPadProbeReturn
 167 buffer_cb (GstPad * pad, GstPadProbeInfo * info, gpointer user_data)
 168 {
 169   GstElement *overlay = GST_PAD_PARENT (pad);
 170   gint x, y, w, h;
 171
 172   w = gdk_pixbuf_get_width (logo_pixbuf);
 173   h = gdk_pixbuf_get_height (logo_pixbuf);
 174
 175   calculate_position (&x, &y, w, h, ++count);
 176
 177   GST_LOG ("%3d, %3d", x, y);
 178
 179   /* FIXME: need absolute positioning where negative offsets are not flipped */
 180   g_object_set (overlay, "offset-x", x, "offset-y", y, NULL);
 181
 182   return GST_PAD_PROBE_OK;
 183 }
 184
 185 int
 186 main (int argc, char **argv)
 187 {
 188   GOptionEntry options[] = {
 189     {NULL}
 190   };
 191   GOptionContext *ctx;
 192   GError *err = NULL;
 193   GstElement *src, *q, *capsfilter, *overlay, *sink;
 194   GstElement *pipeline;
 195   GstPad *sink_pad;
 196   GstCaps *filter_caps;
 197
 198   ctx = g_option_context_new ("");
 199   g_option_context_add_main_entries (ctx, options, GETTEXT_PACKAGE);
 200   g_option_context_add_group (ctx, gst_init_get_option_group ());
 201   if (!g_option_context_parse (ctx, &argc, &argv, &err)) {
 202     g_print ("Error initializing: %s\n", err->message);
 203     return 1;
 204   }
 205   g_option_context_free (ctx);
 206
 207   logo_pixbuf = create_overlay_pixbuf ();
 208
 209   main_loop = g_main_loop_new (NULL, FALSE);
 210
 211   pipeline = gst_pipeline_new ("pipeline");
 212
 213   src = gst_element_factory_make ("videotestsrc", NULL);
 214   gst_util_set_object_arg (G_OBJECT (src), "pattern", "white");
 215
 216   overlay = gst_element_factory_make ("gdkpixbufoverlay", NULL);
 217
 218   /* set positioning-mode to absolute so we can set negative positions */
 219   g_object_set (overlay, "pixbuf", logo_pixbuf, "positioning-mode", 1, NULL);
 220
 221   sink_pad = gst_element_get_static_pad (overlay, "sink");
 222   gst_pad_add_probe (sink_pad, GST_PAD_PROBE_TYPE_BUFFER, buffer_cb, NULL,
 223       NULL);
 224   gst_object_unref (sink_pad);
 225
 226   q = gst_element_factory_make ("queue", NULL);
 227
 228   capsfilter = gst_element_factory_make ("capsfilter", NULL);
 229   filter_caps = gst_caps_from_string ("video/x-raw, format = "
 230       GST_VIDEO_OVERLAY_COMPOSITION_BLEND_FORMATS);
 231   gst_caps_set_simple (filter_caps,
 232       "width", G_TYPE_INT, VIDEO_WIDTH,
 233       "height", G_TYPE_INT, VIDEO_HEIGHT,
 234       "framerate", GST_TYPE_FRACTION, VIDEO_FPS, 1, NULL);
 235   g_object_set (capsfilter, "caps", filter_caps, NULL);
 236   gst_caps_unref (filter_caps);
 237
 238   sink = gst_element_factory_make ("ximagesink", NULL);
 239
 240   gst_bin_add_many (GST_BIN (pipeline), src, q, overlay, capsfilter, sink,
 241       NULL);
 242
 243   gst_element_link_many (src, q, overlay, capsfilter, sink, NULL);
 244
 245   count = 0;
 246
 247   gst_element_set_state (pipeline, GST_STATE_PLAYING);
 248
 249   gst_bus_add_watch (GST_ELEMENT_BUS (pipeline), bus_cb, main_loop);
 250
 251   g_main_loop_run (main_loop);
 252
 253   gst_element_set_state (pipeline, GST_STATE_NULL);
 254   gst_object_unref (pipeline);
 255   g_object_unref (logo_pixbuf);
 256
 257   return 0;
 258 }