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