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Member "gst-plugins-good-1.16.1/tests/check/elements/alpha.c" (19 Apr 2019, 6805 Bytes) of package /linux/misc/gst-plugins-good-1.16.1.tar.xz:


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    1 /* GStreamer unit test for the alpha element
    2  *
    3  * Copyright (C) 2007 Ravi Kiran K N <ravi.kiran@samsung.com>
    4  *
    5  * This library is free software; you can redistribute it and/or
    6  * modify it under the terms of the GNU Library General Public
    7  * License as published by the Free Software Foundation; either
    8  * version 2 of the License, or (at your option) any later version.
    9  *
   10  * This library is distributed in the hope that it will be useful,
   11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
   12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   13  * Library General Public License for more details.
   14  *
   15  * You should have received a copy of the GNU Library General Public
   16  * License along with this library; if not, write to the
   17  * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
   18  * Boston, MA 02110-1301, USA.
   19  */
   20 
   21 #include <gst/check/gstcheck.h>
   22 #include <gst/video/video.h>
   23 
   24 
   25 GstPad *srcpad, *sinkpad;
   26 
   27 static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink",
   28     GST_PAD_SINK,
   29     GST_PAD_ALWAYS,
   30     GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("AYUV"))
   31     );
   32 static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
   33     GST_PAD_SRC,
   34     GST_PAD_ALWAYS,
   35     GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("{ AYUV, "
   36             "ARGB, BGRA, ABGR, RGBA, Y444, xRGB, BGRx, xBGR, "
   37             "RGBx, RGB, BGR, Y42B, YUY2, YVYU, UYVY, I420, YV12, Y41B } "))
   38     );
   39 
   40 
   41 typedef enum
   42 {
   43   FILL_GREEN,
   44   FILL_BLUE
   45 }
   46 FillColor;
   47 
   48 static GstElement *
   49 setup_alpha (void)
   50 {
   51   GstElement *alpha;
   52 
   53   alpha = gst_check_setup_element ("alpha");
   54   srcpad = gst_check_setup_src_pad (alpha, &srctemplate);
   55   sinkpad = gst_check_setup_sink_pad (alpha, &sinktemplate);
   56 
   57   gst_pad_set_active (srcpad, TRUE);
   58   gst_pad_set_active (sinkpad, TRUE);
   59 
   60   return alpha;
   61 }
   62 
   63 static void
   64 cleanup_alpha (GstElement * alpha)
   65 {
   66   gst_pad_set_active (srcpad, FALSE);
   67   gst_pad_set_active (sinkpad, FALSE);
   68   gst_check_teardown_src_pad (alpha);
   69   gst_check_teardown_sink_pad (alpha);
   70   gst_check_teardown_element (alpha);
   71 }
   72 
   73 #define WIDTH 3
   74 #define HEIGHT 4
   75 
   76 static GstCaps *
   77 create_caps_rgba32 (void)
   78 {
   79   GstCaps *caps;
   80 
   81   caps = gst_caps_new_simple ("video/x-raw",
   82       "width", G_TYPE_INT, WIDTH,
   83       "height", G_TYPE_INT, HEIGHT,
   84       "framerate", GST_TYPE_FRACTION, 0, 1,
   85       "format", G_TYPE_STRING, "RGBA", NULL);
   86 
   87   return caps;
   88 }
   89 
   90 static GstBuffer *
   91 create_buffer_rgba32 (FillColor color)
   92 {
   93   guint8 rgba32_img[HEIGHT * WIDTH * 4];
   94   guint32 *rgba32 = (guint32 *) rgba32_img;
   95 
   96   GstBuffer *buf;
   97   GstMapInfo map;
   98   guint32 rgba_col;
   99   int i;
  100 
  101   if (color == FILL_GREEN)
  102     rgba_col = 0xff00ff00;      /* GREEN */
  103   else
  104     rgba_col = 0xffff0000;      /* BLUE */
  105 
  106   for (i = 0; i < HEIGHT * WIDTH; i++)
  107     rgba32[i] = rgba_col;
  108 
  109   buf = gst_buffer_new_and_alloc (HEIGHT * WIDTH * 4);
  110   gst_buffer_map (buf, &map, GST_MAP_READWRITE);
  111   fail_unless_equals_int (map.size, sizeof (rgba32_img));
  112   memcpy (map.data, rgba32_img, sizeof (rgba32_img));
  113 
  114   gst_buffer_unmap (buf, &map);
  115 
  116   return buf;
  117 }
  118 
  119 
  120 GST_START_TEST (test_chromakeying)
  121 {
  122   GstElement *alpha;
  123   GstBuffer *inbuffer;
  124   GstBuffer *outbuffer;
  125   GstCaps *incaps;
  126   guint8 *ayuv;
  127   guint outlength;
  128   GstMapInfo map;
  129   int i;
  130 
  131   incaps = create_caps_rgba32 ();
  132 
  133   alpha = setup_alpha ();
  134 
  135   g_object_set (alpha, "method", 1, NULL);      /* Chroma-keying GREEN */
  136 
  137   fail_unless_equals_int (gst_element_set_state (alpha, GST_STATE_PLAYING),
  138       GST_STATE_CHANGE_SUCCESS);
  139 
  140   gst_check_setup_events (srcpad, alpha, incaps, GST_FORMAT_TIME);
  141 
  142   inbuffer = create_buffer_rgba32 (FILL_GREEN);
  143   GST_DEBUG ("Created buffer of %" G_GSIZE_FORMAT " bytes",
  144       gst_buffer_get_size (inbuffer));
  145   ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);
  146 
  147   fail_unless_equals_int (gst_pad_push (srcpad, inbuffer), GST_FLOW_OK);
  148 
  149   fail_unless (g_list_length (buffers) == 1);
  150   outbuffer = (GstBuffer *) buffers->data;
  151   fail_if (outbuffer == NULL);
  152   fail_unless (GST_IS_BUFFER (outbuffer));
  153 
  154   ASSERT_BUFFER_REFCOUNT (outbuffer, "outbuffer", 1);
  155   outlength = WIDTH * HEIGHT * 4;       /* output is AYUV */
  156   gst_buffer_map (outbuffer, &map, GST_MAP_READ);
  157   fail_unless_equals_int (map.size, outlength);
  158 
  159   ayuv = map.data;
  160 
  161   /* check chroma keying GREEN */
  162   for (i = 0; i < HEIGHT * WIDTH; i += 4)
  163     fail_unless_equals_int (ayuv[i], 0x00);
  164 
  165   gst_buffer_unmap (outbuffer, &map);
  166 
  167   buffers = g_list_remove (buffers, outbuffer);
  168   gst_buffer_unref (outbuffer);
  169 
  170   fail_unless_equals_int (gst_element_set_state (alpha, GST_STATE_NULL),
  171       GST_STATE_CHANGE_SUCCESS);
  172 
  173   /* cleanup */
  174   cleanup_alpha (alpha);
  175   ASSERT_CAPS_REFCOUNT (incaps, "incaps", 1);
  176   gst_caps_unref (incaps);
  177 
  178 }
  179 
  180 GST_END_TEST;
  181 
  182 
  183 
  184 GST_START_TEST (test_alpha)
  185 {
  186   GstElement *alpha;
  187   GstBuffer *inbuffer;
  188   GstBuffer *outbuffer;
  189   GstCaps *incaps;
  190   guint8 *ayuv;
  191   guint outlength;
  192   GstMapInfo map;
  193   int i;
  194 
  195   incaps = create_caps_rgba32 ();
  196 
  197   alpha = setup_alpha ();
  198 
  199   g_object_set (alpha, "alpha", 0.5, NULL);     /* Alpha value 0.5 */
  200 
  201   fail_unless_equals_int (gst_element_set_state (alpha, GST_STATE_PLAYING),
  202       GST_STATE_CHANGE_SUCCESS);
  203 
  204   gst_check_setup_events (srcpad, alpha, incaps, GST_FORMAT_TIME);
  205 
  206   inbuffer = create_buffer_rgba32 (FILL_BLUE);
  207   GST_DEBUG ("Created buffer of %" G_GSIZE_FORMAT " bytes",
  208       gst_buffer_get_size (inbuffer));
  209   ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);
  210 
  211   /* pushing gives away reference */
  212   GST_DEBUG ("push it");
  213   fail_unless_equals_int (gst_pad_push (srcpad, inbuffer), GST_FLOW_OK);
  214   GST_DEBUG ("pushed it");
  215 
  216   /* ... and puts a new buffer on the global list */
  217   fail_unless (g_list_length (buffers) == 1);
  218   outbuffer = (GstBuffer *) buffers->data;
  219   fail_if (outbuffer == NULL);
  220   fail_unless (GST_IS_BUFFER (outbuffer));
  221 
  222   ASSERT_BUFFER_REFCOUNT (outbuffer, "outbuffer", 1);
  223   outlength = WIDTH * HEIGHT * 4;       /* output is AYUV */
  224   gst_buffer_map (outbuffer, &map, GST_MAP_READ);
  225   fail_unless_equals_int (map.size, outlength);
  226 
  227   ayuv = map.data;
  228 
  229   for (i = 0; i < HEIGHT * WIDTH; i += 4)
  230     fail_unless_equals_int (ayuv[i], 0x7F);
  231 
  232   gst_buffer_unmap (outbuffer, &map);
  233 
  234   buffers = g_list_remove (buffers, outbuffer);
  235   gst_buffer_unref (outbuffer);
  236 
  237   fail_unless_equals_int (gst_element_set_state (alpha, GST_STATE_NULL),
  238       GST_STATE_CHANGE_SUCCESS);
  239 
  240   /* cleanup */
  241   GST_DEBUG ("cleanup alpha");
  242   cleanup_alpha (alpha);
  243   GST_DEBUG ("cleanup, unref incaps");
  244   ASSERT_CAPS_REFCOUNT (incaps, "incaps", 1);
  245   gst_caps_unref (incaps);
  246 
  247 }
  248 
  249 GST_END_TEST;
  250 
  251 
  252 static Suite *
  253 alpha_suite (void)
  254 {
  255   Suite *s = suite_create ("alpha");
  256   TCase *tc_chain = tcase_create ("general");
  257 
  258   suite_add_tcase (s, tc_chain);
  259   tcase_add_test (tc_chain, test_alpha);
  260   tcase_add_test (tc_chain, test_chromakeying);
  261 
  262   return s;
  263 }
  264 
  265 GST_CHECK_MAIN (alpha);