gstreamer/gst/avi/gstavidecoder.c

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/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*#define GST_DEBUG_ENABLED */
#include <string.h>
#include "gstavidecoder.h"
/* elementfactory information */
static GstElementDetails gst_avi_decoder_details = {
".avi decoder",
"Decoder/Video",
"Decodes a .avi file into audio and video",
VERSION,
"Erik Walthinsen <omega@cse.ogi.edu>\n" "Wim Taymans <wim.taymans@tvd.be>",
"(C) 1999",
};
static GstCaps *avi_typefind (GstBuffer * buf, gpointer private);
/* typefactory for 'avi' */
static GstTypeDefinition avidefinition = {
"avidecoder_video/avi",
"video/avi",
".avi",
avi_typefind,
};
/* AviDecoder signals and args */
enum
{
/* FILL ME */
LAST_SIGNAL
};
enum
{
ARG_0,
ARG_BITRATE,
ARG_MEDIA_TIME,
ARG_CURRENT_TIME,
/* FILL ME */
};
GST_PADTEMPLATE_FACTORY (sink_templ,
"sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_CAPS_NEW ("avidecoder_sink",
"video/avi", "RIFF", GST_PROPS_STRING ("AVI")
)
)
GST_PADTEMPLATE_FACTORY (src_video_templ,
"video_src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_CAPS_NEW ("wincodec_src",
"video/raw",
"format", GST_PROPS_LIST (GST_PROPS_FOURCC (GST_MAKE_FOURCC ('Y', 'U', 'Y',
'2')), GST_PROPS_FOURCC (GST_MAKE_FOURCC ('I', '4', '2', '0')),
GST_PROPS_FOURCC (GST_MAKE_FOURCC ('R', 'G', 'B', ' '))
), "width", GST_PROPS_INT_RANGE (16, 4096), "height",
GST_PROPS_INT_RANGE (16, 4096)
)
)
GST_PADTEMPLATE_FACTORY (src_audio_templ,
"audio_src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_CAPS_NEW ("src_audio",
"audio/raw",
"format", GST_PROPS_STRING ("int"),
"law", GST_PROPS_INT (0),
"endianness", GST_PROPS_INT (G_BYTE_ORDER),
"signed", GST_PROPS_LIST (GST_PROPS_BOOLEAN (TRUE),
GST_PROPS_BOOLEAN (FALSE)
), "width", GST_PROPS_LIST (GST_PROPS_INT (8), GST_PROPS_INT (16)
), "depth", GST_PROPS_LIST (GST_PROPS_INT (8), GST_PROPS_INT (16)
),
"rate", GST_PROPS_INT_RANGE (11025, 48000),
"channels", GST_PROPS_INT_RANGE (1, 2)
)
)
static void gst_avi_decoder_class_init (GstAviDecoderClass * klass);
static void gst_avi_decoder_init (GstAviDecoder * avi_decoder);
static void gst_avi_decoder_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static GstElementClass *parent_class = NULL;
/*static guint gst_avi_decoder_signals[LAST_SIGNAL] = { 0 }; */
GType
gst_avi_decoder_get_type (void)
{
static GType avi_decoder_type = 0;
if (!avi_decoder_type) {
static const GTypeInfo avi_decoder_info = {
sizeof (GstAviDecoderClass),
NULL,
NULL,
(GClassInitFunc) gst_avi_decoder_class_init,
NULL,
NULL,
sizeof (GstAviDecoder),
0,
(GInstanceInitFunc) gst_avi_decoder_init,
};
avi_decoder_type =
g_type_register_static (GST_TYPE_BIN, "GstAviDecoder",
&avi_decoder_info, 0);
}
return avi_decoder_type;
}
static void
gst_avi_decoder_class_init (GstAviDecoderClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_BITRATE, g_param_spec_long ("bitrate", "bitrate", "bitrate", G_MINLONG, G_MAXLONG, 0, G_PARAM_READABLE)); /* CHECKME */
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_MEDIA_TIME, g_param_spec_long ("media_time", "media_time", "media_time", G_MINLONG, G_MAXLONG, 0, G_PARAM_READABLE)); /* CHECKME */
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_CURRENT_TIME, g_param_spec_long ("current_time", "current_time", "current_time", G_MINLONG, G_MAXLONG, 0, G_PARAM_READABLE)); /* CHECKME */
parent_class = g_type_class_ref (GST_TYPE_BIN);
gobject_class->get_property = gst_avi_decoder_get_property;
}
static void
gst_avi_decoder_new_pad (GstElement * element, GstPad * pad,
GstAviDecoder * avi_decoder)
{
GstCaps *caps;
GstCaps *targetcaps = NULL;
const gchar *format;
gboolean type_found;
GstElement *type;
GstElement *new_element = NULL;
gchar *padname = NULL;
gchar *gpadname = NULL;
#define AVI_TYPE_VIDEO 1
#define AVI_TYPE_AUDIO 2
gint media_type = 0;
GST_DEBUG (0, "avidecoder: new pad for element \"%s\"",
gst_element_get_name (element));
caps = gst_pad_get_caps (pad);
format = gst_caps_get_string (caps, "format");
if (!strcmp (format, "strf_vids")) {
targetcaps =
gst_padtemplate_get_caps (GST_PADTEMPLATE_GET (src_video_templ));
media_type = AVI_TYPE_VIDEO;
gpadname = g_strdup_printf ("video_%02d", avi_decoder->video_count++);
} else if (!strcmp (format, "strf_auds")) {
targetcaps =
gst_padtemplate_get_caps (GST_PADTEMPLATE_GET (src_audio_templ));
media_type = AVI_TYPE_AUDIO;
gpadname = g_strdup_printf ("audio_%02d", avi_decoder->audio_count++);
} else if (!strcmp (format, "strf_iavs")) {
targetcaps =
gst_padtemplate_get_caps (GST_PADTEMPLATE_GET (src_video_templ));
media_type = AVI_TYPE_VIDEO;
gpadname = g_strdup_printf ("video_%02d", avi_decoder->video_count++);
} else {
g_assert_not_reached ();
}
gst_element_set_state (GST_ELEMENT (avi_decoder), GST_STATE_PAUSED);
type = gst_elementfactory_make ("avitypes",
g_strdup_printf ("typeconvert%d", avi_decoder->count));
/* brin the element to the READY state so it can do our caps negotiation */
gst_element_set_state (type, GST_STATE_READY);
gst_pad_connect (pad, gst_element_get_pad (type, "sink"));
type_found = gst_util_get_bool_arg (G_OBJECT (type), "type_found");
if (type_found) {
gst_bin_add (GST_BIN (avi_decoder), type);
pad = gst_element_get_pad (type, "src");
caps = gst_pad_get_caps (pad);
if (gst_caps_is_always_compatible (caps, targetcaps)) {
gst_element_add_ghost_pad (GST_ELEMENT (avi_decoder),
gst_element_get_pad (type, "src"), gpadname);
avi_decoder->count++;
goto done;
}
#ifndef GST_DISABLE_AUTOPLUG
else {
GstAutoplug *autoplug;
autoplug = gst_autoplugfactory_make ("static");
new_element = gst_autoplug_to_caps (autoplug, caps, targetcaps, NULL);
padname = "src_00";
}
#endif /* GST_DISABLE_AUTOPLUG */
}
if (!new_element && (media_type == AVI_TYPE_VIDEO)) {
padname = "src";
} else if (!new_element && (media_type == AVI_TYPE_AUDIO)) {
/*FIXME */
padname = "src";
}
if (new_element) {
gst_pad_connect (pad, gst_element_get_pad (new_element, "sink"));
gst_element_set_name (new_element, g_strdup_printf ("element%d",
avi_decoder->count));
gst_bin_add (GST_BIN (avi_decoder), new_element);
gst_element_add_ghost_pad (GST_ELEMENT (avi_decoder),
gst_element_get_pad (new_element, padname), gpadname);
avi_decoder->count++;
} else {
g_warning ("avidecoder: could not autoplug\n");
}
done:
gst_element_set_state (GST_ELEMENT (avi_decoder), GST_STATE_PLAYING);
}
static void
gst_avi_decoder_init (GstAviDecoder * avi_decoder)
{
avi_decoder->demuxer = gst_elementfactory_make ("avidemux", "demux");
if (avi_decoder->demuxer) {
gst_bin_add (GST_BIN (avi_decoder), avi_decoder->demuxer);
gst_element_add_ghost_pad (GST_ELEMENT (avi_decoder),
gst_element_get_pad (avi_decoder->demuxer, "sink"), "sink");
g_signal_connect (G_OBJECT (avi_decoder->demuxer), "new_pad",
G_CALLBACK (gst_avi_decoder_new_pad), avi_decoder);
} else {
g_warning ("wow!, no avi demuxer found. help me\n");
}
avi_decoder->count = 0;
avi_decoder->audio_count = 0;
avi_decoder->video_count = 0;
}
static GstCaps *
avi_typefind (GstBuffer * buf, gpointer private)
{
gchar *data = GST_BUFFER_DATA (buf);
GstCaps *new;
GST_DEBUG (0, "avi_decoder: typefind");
if (strncmp (&data[0], "RIFF", 4))
return NULL;
if (strncmp (&data[8], "AVI ", 4))
return NULL;
new = GST_CAPS_NEW ("avi_typefind",
"video/avi", "RIFF", GST_PROPS_STRING ("AVI"));
return new;
}
static void
gst_avi_decoder_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstAviDecoder *src;
g_return_if_fail (GST_IS_AVI_DECODER (object));
src = GST_AVI_DECODER (object);
switch (prop_id) {
case ARG_BITRATE:
break;
case ARG_MEDIA_TIME:
g_value_set_long (value, gst_util_get_long_arg (G_OBJECT (src->demuxer),
"media_time"));
break;
case ARG_CURRENT_TIME:
g_value_set_long (value, gst_util_get_long_arg (G_OBJECT (src->demuxer),
"current_time"));
break;
default:
break;
}
}
static gboolean
plugin_init (GModule * module, GstPlugin * plugin)
{
GstElementFactory *factory;
GstTypeFactory *type;
/* create an elementfactory for the avi_decoder element */
factory = gst_elementfactory_new ("avidecoder", GST_TYPE_AVI_DECODER,
&gst_avi_decoder_details);
g_return_val_if_fail (factory != NULL, FALSE);
gst_elementfactory_add_padtemplate (factory,
GST_PADTEMPLATE_GET (src_audio_templ));
gst_elementfactory_add_padtemplate (factory,
GST_PADTEMPLATE_GET (src_video_templ));
gst_elementfactory_add_padtemplate (factory,
GST_PADTEMPLATE_GET (sink_templ));
type = gst_typefactory_new (&avidefinition);
gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (type));
gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));
return TRUE;
}
GstPluginDesc plugin_desc = {
GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"avidecoder",
plugin_init
};