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Member "gst-plugins-good-1.20.3/tests/check/elements/alpha.c" (15 Jun 2022, 7060 Bytes) of package /linux/misc/gst-plugins-good-1.20.3.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 #if G_BYTE_ORDER == G_BIG_ENDIAN
   91 #define RGBA(r,g,b,a) (guint32)(((r&0xff)<<24)|((g&0xff)<<16)|((b&0xff)<<8)|(a&0xff))
   92 #else
   93 #define RGBA(r,g,b,a) (guint32)(((a&0xff)<<24)|((b&0xff)<<16)|((g&0xff)<<8)|(r&0xff))
   94 #endif
   95 #define RGB(r,g,b) RGBA(r,g,b,0xff)
   96 
   97 static GstBuffer *
   98 create_buffer_rgba32 (FillColor color)
   99 {
  100   guint8 rgba32_img[HEIGHT * WIDTH * 4];
  101   guint32 *rgba32 = (guint32 *) rgba32_img;
  102 
  103   GstBuffer *buf;
  104   GstMapInfo map;
  105   guint32 rgba_col;
  106   int i;
  107 
  108   if (color == FILL_GREEN)
  109     rgba_col = RGB (0, 255, 0); /* GREEN */
  110   else
  111     rgba_col = RGB (0, 0, 255); /* BLUE */
  112 
  113   for (i = 0; i < HEIGHT * WIDTH; i++)
  114     rgba32[i] = rgba_col;
  115 
  116   buf = gst_buffer_new_and_alloc (HEIGHT * WIDTH * 4);
  117   gst_buffer_map (buf, &map, GST_MAP_READWRITE);
  118   fail_unless_equals_int (map.size, sizeof (rgba32_img));
  119   memcpy (map.data, rgba32_img, sizeof (rgba32_img));
  120 
  121   gst_buffer_unmap (buf, &map);
  122 
  123   return buf;
  124 }
  125 
  126 
  127 GST_START_TEST (test_chromakeying)
  128 {
  129   GstElement *alpha;
  130   GstBuffer *inbuffer;
  131   GstBuffer *outbuffer;
  132   GstCaps *incaps;
  133   guint8 *ayuv;
  134   guint outlength;
  135   GstMapInfo map;
  136   int i;
  137 
  138   incaps = create_caps_rgba32 ();
  139 
  140   alpha = setup_alpha ();
  141 
  142   g_object_set (alpha, "method", 1, NULL);      /* Chroma-keying GREEN */
  143 
  144   fail_unless_equals_int (gst_element_set_state (alpha, GST_STATE_PLAYING),
  145       GST_STATE_CHANGE_SUCCESS);
  146 
  147   gst_check_setup_events (srcpad, alpha, incaps, GST_FORMAT_TIME);
  148 
  149   inbuffer = create_buffer_rgba32 (FILL_GREEN);
  150   GST_DEBUG ("Created buffer of %" G_GSIZE_FORMAT " bytes",
  151       gst_buffer_get_size (inbuffer));
  152   ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);
  153 
  154   fail_unless_equals_int (gst_pad_push (srcpad, inbuffer), GST_FLOW_OK);
  155 
  156   fail_unless (g_list_length (buffers) == 1);
  157   outbuffer = (GstBuffer *) buffers->data;
  158   fail_if (outbuffer == NULL);
  159   fail_unless (GST_IS_BUFFER (outbuffer));
  160 
  161   ASSERT_BUFFER_REFCOUNT (outbuffer, "outbuffer", 1);
  162   outlength = WIDTH * HEIGHT * 4;       /* output is AYUV */
  163   gst_buffer_map (outbuffer, &map, GST_MAP_READ);
  164   fail_unless_equals_int (map.size, outlength);
  165 
  166   ayuv = map.data;
  167 
  168   /* check chroma keying GREEN */
  169   for (i = 0; i < HEIGHT * WIDTH; i += 4)
  170     fail_unless_equals_int (ayuv[i], 0x00);
  171 
  172   gst_buffer_unmap (outbuffer, &map);
  173 
  174   buffers = g_list_remove (buffers, outbuffer);
  175   gst_buffer_unref (outbuffer);
  176 
  177   fail_unless_equals_int (gst_element_set_state (alpha, GST_STATE_NULL),
  178       GST_STATE_CHANGE_SUCCESS);
  179 
  180   /* cleanup */
  181   cleanup_alpha (alpha);
  182   ASSERT_CAPS_REFCOUNT (incaps, "incaps", 1);
  183   gst_caps_unref (incaps);
  184 
  185 }
  186 
  187 GST_END_TEST;
  188 
  189 
  190 
  191 GST_START_TEST (test_alpha)
  192 {
  193   GstElement *alpha;
  194   GstBuffer *inbuffer;
  195   GstBuffer *outbuffer;
  196   GstCaps *incaps;
  197   guint8 *ayuv;
  198   guint outlength;
  199   GstMapInfo map;
  200   int i;
  201 
  202   incaps = create_caps_rgba32 ();
  203 
  204   alpha = setup_alpha ();
  205 
  206   g_object_set (alpha, "alpha", 0.5, NULL);     /* Alpha value 0.5 */
  207 
  208   fail_unless_equals_int (gst_element_set_state (alpha, GST_STATE_PLAYING),
  209       GST_STATE_CHANGE_SUCCESS);
  210 
  211   gst_check_setup_events (srcpad, alpha, incaps, GST_FORMAT_TIME);
  212 
  213   inbuffer = create_buffer_rgba32 (FILL_BLUE);
  214   GST_DEBUG ("Created buffer of %" G_GSIZE_FORMAT " bytes",
  215       gst_buffer_get_size (inbuffer));
  216   ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);
  217 
  218   /* pushing gives away reference */
  219   GST_DEBUG ("push it");
  220   fail_unless_equals_int (gst_pad_push (srcpad, inbuffer), GST_FLOW_OK);
  221   GST_DEBUG ("pushed it");
  222 
  223   /* ... and puts a new buffer on the global list */
  224   fail_unless (g_list_length (buffers) == 1);
  225   outbuffer = (GstBuffer *) buffers->data;
  226   fail_if (outbuffer == NULL);
  227   fail_unless (GST_IS_BUFFER (outbuffer));
  228 
  229   ASSERT_BUFFER_REFCOUNT (outbuffer, "outbuffer", 1);
  230   outlength = WIDTH * HEIGHT * 4;       /* output is AYUV */
  231   gst_buffer_map (outbuffer, &map, GST_MAP_READ);
  232   fail_unless_equals_int (map.size, outlength);
  233 
  234   ayuv = map.data;
  235 
  236   for (i = 0; i < HEIGHT * WIDTH; i += 4)
  237     fail_unless_equals_int (ayuv[i], 0x7F);
  238 
  239   gst_buffer_unmap (outbuffer, &map);
  240 
  241   buffers = g_list_remove (buffers, outbuffer);
  242   gst_buffer_unref (outbuffer);
  243 
  244   fail_unless_equals_int (gst_element_set_state (alpha, GST_STATE_NULL),
  245       GST_STATE_CHANGE_SUCCESS);
  246 
  247   /* cleanup */
  248   GST_DEBUG ("cleanup alpha");
  249   cleanup_alpha (alpha);
  250   GST_DEBUG ("cleanup, unref incaps");
  251   ASSERT_CAPS_REFCOUNT (incaps, "incaps", 1);
  252   gst_caps_unref (incaps);
  253 
  254 }
  255 
  256 GST_END_TEST;
  257 
  258 
  259 static Suite *
  260 alpha_suite (void)
  261 {
  262   Suite *s = suite_create ("alpha");
  263   TCase *tc_chain = tcase_create ("general");
  264 
  265   suite_add_tcase (s, tc_chain);
  266   tcase_add_test (tc_chain, test_alpha);
  267   tcase_add_test (tc_chain, test_chromakeying);
  268 
  269   return s;
  270 }
  271 
  272 GST_CHECK_MAIN (alpha);