gst/law/mulaw.c

   1 #ifdef HAVE_CONFIG_H
   2 #include "config.h"
   3 #endif
   4 #include "mulaw-encode.h"
   5 #include "mulaw-decode.h"
   6
   7 static GstCaps*
   8 mulaw_factory (void)
   9 {
  10   return
  11     gst_caps_new (
  12         "test_src",
  13         "audio/x-mulaw",
  14         gst_props_new (
  15             "width",    GST_PROPS_INT(8),
  16             "depth",    GST_PROPS_INT(8),
  17             "signed",   GST_PROPS_BOOLEAN(FALSE),
  18             "rate",     GST_PROPS_INT_RANGE (8000, 192000),
  19             "channels", GST_PROPS_INT_RANGE (1, 2),
  20             NULL));
  21 }
  22
  23 static GstCaps*
  24 linear_factory (void)
  25 {
  26   return
  27     gst_caps_new (
  28         "test_sink",
  29         "audio/x-raw-int",
  30         gst_props_new (
  31             "width",      GST_PROPS_INT(16),
  32             "depth",      GST_PROPS_INT(16),
  33             "signed",     GST_PROPS_BOOLEAN(TRUE),
  34             "endianness", GST_PROPS_INT(G_BYTE_ORDER),
  35             "rate",       GST_PROPS_INT_RANGE (8000, 192000),
  36             "channels",   GST_PROPS_INT_RANGE (1, 2),
  37             NULL));
  38 }
  39
  40 GstPadTemplate *mulawenc_src_template, *mulawenc_sink_template;
  41 GstPadTemplate *mulawdec_src_template, *mulawdec_sink_template;
  42
  43 static gboolean
  44 plugin_init (GstPlugin *plugin)
  45 {
  46   GstCaps* mulaw_caps, *linear_caps;
  47
  48   mulaw_caps = mulaw_factory ();
  49   linear_caps = linear_factory ();
  50
  51   mulawenc_src_template = gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS,
  52                                                mulaw_caps, NULL);
  53   mulawenc_sink_template = gst_pad_template_new ("sink", GST_PAD_SINK, GST_PAD_ALWAYS,
  54                                                 linear_caps, NULL);
  55
  56   mulawdec_src_template = gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS,
  57                                                 linear_caps, NULL);
  58   mulawdec_sink_template = gst_pad_template_new ("sink", GST_PAD_SINK, GST_PAD_ALWAYS,
  59                                                 mulaw_caps, NULL);
  60
  61   if (!gst_element_register (plugin, "mulawenc",
  62                              GST_RANK_NONE, GST_TYPE_MULAWENC) ||
  63       !gst_element_register (plugin, "mulawdec",
  64                              GST_RANK_PRIMARY, GST_TYPE_MULAWENC))
  65     return FALSE;
  66
  67   return TRUE;
  68 }
  69
  70 GST_PLUGIN_DEFINE (
  71   GST_VERSION_MAJOR,
  72   GST_VERSION_MINOR,
  73   "mulaw",
  74   "MuLaw audio conversion routines",
  75   plugin_init,
  76   VERSION,
  77   GST_LICENSE,
  78   GST_COPYRIGHT,
  79   GST_PACKAGE,
  80   GST_ORIGIN
  81 )