mirror of
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27f2c9b255
Original commit message from CVS: * ext/aalib/gstaasink.c: * ext/annodex/gstcmmldec.c: * ext/annodex/gstcmmlenc.c: * ext/cairo/gsttextoverlay.c: * ext/cairo/gsttimeoverlay.c: * ext/cdio/gstcdiocddasrc.c: * ext/dv/gstdvdec.c: * ext/dv/gstdvdemux.c: * ext/esd/esdmon.c: * ext/esd/esdsink.c: * ext/flac/gstflacenc.c: * ext/flac/gstflactag.c: * ext/gconf/gstgconfaudiosink.c: (gst_gconf_audio_sink_base_init): * ext/gconf/gstgconfaudiosrc.c: (gst_gconf_audio_src_base_init): * ext/gconf/gstgconfvideosink.c: (gst_gconf_video_sink_base_init): * ext/gconf/gstgconfvideosrc.c: (gst_gconf_video_src_base_init): * ext/gdk_pixbuf/pixbufscale.c: * ext/hal/gsthalaudiosink.c: (gst_hal_audio_sink_base_init): * ext/hal/gsthalaudiosrc.c: (gst_hal_audio_src_base_init): * ext/jpeg/gstjpegdec.c: * ext/jpeg/gstjpegenc.c: * ext/jpeg/gstsmokedec.c: * ext/jpeg/gstsmokeenc.c: * ext/libcaca/gstcacasink.c: * ext/libmng/gstmngdec.c: * ext/libmng/gstmngenc.c: * ext/libpng/gstpngdec.c: * ext/libpng/gstpngenc.c: * ext/mikmod/gstmikmod.c: * ext/raw1394/gstdv1394src.c: * ext/shout2/gstshout2.c: (gst_shout2send_init): * ext/shout2/gstshout2.h: * ext/speex/gstspeexdec.c: * ext/speex/gstspeexenc.c: * gst/alpha/gstalpha.c: * gst/alpha/gstalphacolor.c: * gst/apetag/gstapedemux.c: * gst/auparse/gstauparse.c: * gst/autodetect/gstautoaudiosink.c: (gst_auto_audio_sink_base_init): * gst/autodetect/gstautovideosink.c: (gst_auto_video_sink_base_init): * gst/avi/gstavidemux.c: (gst_avi_demux_base_init): * gst/avi/gstavimux.c: (gst_avimux_base_init): * gst/cutter/gstcutter.c: * gst/debug/breakmydata.c: * gst/debug/efence.c: * gst/debug/gstnavigationtest.c: * gst/debug/gstnavseek.c: * gst/debug/negotiation.c: * gst/debug/progressreport.c: * gst/debug/testplugin.c: * gst/effectv/gstaging.c: * gst/effectv/gstdice.c: * gst/effectv/gstedge.c: * gst/effectv/gstquark.c: * gst/effectv/gstrev.c: * gst/effectv/gstshagadelic.c: * gst/effectv/gstvertigo.c: * gst/effectv/gstwarp.c: * gst/flx/gstflxdec.c: * gst/goom/gstgoom.c: * gst/icydemux/gsticydemux.c: * gst/id3demux/gstid3demux.c: * gst/interleave/deinterleave.c: * gst/interleave/interleave.c: * gst/law/alaw-decode.c: (gst_alawdec_base_init): * gst/law/alaw-encode.c: (gst_alawenc_base_init): * gst/law/mulaw-decode.c: (gst_mulawdec_base_init): * gst/law/mulaw-encode.c: (gst_mulawenc_base_init): * gst/level/gstlevel.c: * gst/matroska/matroska-demux.c: (gst_matroska_demux_base_init): * gst/matroska/matroska-mux.c: (gst_matroska_mux_base_init): * gst/median/gstmedian.c: * gst/monoscope/gstmonoscope.c: * gst/multipart/multipartdemux.c: * gst/multipart/multipartmux.c: * gst/oldcore/gstaggregator.c: * gst/oldcore/gstfdsink.c: * gst/oldcore/gstmd5sink.c: * gst/oldcore/gstmultifilesrc.c: * gst/oldcore/gstpipefilter.c: * gst/oldcore/gstshaper.c: * gst/oldcore/gststatistics.c: * gst/rtp/gstasteriskh263.c: * gst/rtp/gstrtpL16depay.c: * gst/rtp/gstrtpL16pay.c: * gst/rtp/gstrtpamrdepay.c: * gst/rtp/gstrtpamrpay.c: * gst/rtp/gstrtpdepay.c: * gst/rtp/gstrtpgsmpay.c: * gst/rtp/gstrtph263pay.c: * gst/rtp/gstrtph263pdepay.c: * gst/rtp/gstrtph263ppay.c: * gst/rtp/gstrtpilbcdepay.c: * gst/rtp/gstrtpmp4gpay.c: * gst/rtp/gstrtpmp4vdepay.c: * gst/rtp/gstrtpmp4vpay.c: * gst/rtp/gstrtpmpadepay.c: * gst/rtp/gstrtpmpapay.c: * gst/rtp/gstrtppcmadepay.c: * gst/rtp/gstrtppcmapay.c: * gst/rtp/gstrtppcmudepay.c: * gst/rtp/gstrtppcmupay.c: * gst/rtp/gstrtpspeexdepay.c: * gst/rtp/gstrtpspeexpay.c: * gst/rtsp/gstrtpdec.c: * gst/rtsp/gstrtspsrc.c: * gst/smpte/gstsmpte.c: * gst/udp/gstdynudpsink.c: * gst/udp/gstmultiudpsink.c: * gst/udp/gstudpsink.c: * gst/udp/gstudpsrc.c: * gst/videobox/gstvideobox.c: * gst/videofilter/gstgamma.c: (gst_gamma_base_init): * gst/videofilter/gstvideobalance.c: * gst/videofilter/gstvideoflip.c: * gst/videofilter/gstvideotemplate.c: (gst_videotemplate_base_init): * gst/videomixer/videomixer.c: * gst/wavparse/gstwavparse.c: (gst_wavparse_base_init), (gst_wavparse_class_init), (gst_wavparse_dispose), (gst_wavparse_reset), (gst_wavparse_init), (gst_wavparse_perform_seek), (gst_wavparse_peek_chunk_info), (gst_wavparse_peek_chunk), (gst_wavparse_stream_headers), (gst_wavparse_parse_stream_init), (gst_wavparse_send_event), (gst_wavparse_add_src_pad), (gst_wavparse_stream_data), (gst_wavparse_chain), (gst_wavparse_srcpad_event), (gst_wavparse_sink_activate), (gst_wavparse_sink_activate_pull), (gst_wavparse_change_state): * gst/wavparse/gstwavparse.h: * sys/oss/gstossmixerelement.c: * sys/oss/gstosssink.c: * sys/oss/gstosssrc.c: * sys/osxaudio/gstosxaudioelement.c: * sys/osxaudio/gstosxaudiosink.c: * sys/osxaudio/gstosxaudiosrc.c: * sys/sunaudio/gstsunaudiomixer.c: * sys/sunaudio/gstsunaudiosink.c: Define GstElementDetails as const and also static (when defined as global)
357 lines
10 KiB
C
357 lines
10 KiB
C
/* GStreamer
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* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
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* 2000 Wim Taymans <wtay@chello.be>
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*
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* gstpipefilter.c:
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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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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <errno.h>
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include "../gst-i18n-lib.h"
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#include "gstpipefilter.h"
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static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS_ANY);
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static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS_ANY);
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GST_DEBUG_CATEGORY_STATIC (gst_pipefilter_debug);
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#define GST_CAT_DEFAULT gst_pipefilter_debug
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static const GstElementDetails gst_pipefilter_details =
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GST_ELEMENT_DETAILS ("Pipe filter",
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"Filter",
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"Interoperate with an external program using stdin and stdout",
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"Erik Walthinsen <omega@cse.ogi.edu>, "
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"Wim Taymans <wim.taymans@chello.be>");
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/* Pipefilter 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_COMMAND
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};
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#define _do_init(bla) \
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GST_DEBUG_CATEGORY_INIT (gst_pipefilter_debug, "pipefilter", 0, "pipefilter element");
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GST_BOILERPLATE_FULL (GstPipefilter, gst_pipefilter, GstElement,
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GST_TYPE_ELEMENT, _do_init);
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static void gst_pipefilter_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_pipefilter_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static GstData *gst_pipefilter_get (GstPad * pad);
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static void gst_pipefilter_chain (GstPad * pad, GstData * _data);
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static gboolean gst_pipefilter_handle_event (GstPad * pad, GstEvent * event);
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static GstStateChangeReturn gst_pipefilter_change_state (GstElement * element,
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GstStateChange transition);
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static void
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gst_pipefilter_base_init (gpointer g_class)
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{
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GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
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gst_element_class_add_pad_template (gstelement_class,
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gst_static_pad_template_get (&srctemplate));
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gst_element_class_add_pad_template (gstelement_class,
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gst_static_pad_template_get (&sinktemplate));
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gst_element_class_set_details (gstelement_class, &gst_pipefilter_details);
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}
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static void
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gst_pipefilter_class_init (GstPipefilterClass * 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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gobject_class->set_property = gst_pipefilter_set_property;
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gobject_class->get_property = gst_pipefilter_get_property;
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g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_COMMAND, g_param_spec_string ("command", "command", "command", NULL, G_PARAM_READWRITE)); /* CHECKME */
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gstelement_class->change_state = gst_pipefilter_change_state;
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}
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static void
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gst_pipefilter_init (GstPipefilter * pipefilter, GstPipefilterClass * g_class)
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{
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GST_OBJECT_FLAG_SET (pipefilter, GST_ELEMENT_DECOUPLED);
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pipefilter->sinkpad =
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gst_pad_new_from_template (gst_static_pad_template_get (&sinktemplate),
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"sink");
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gst_element_add_pad (GST_ELEMENT (pipefilter), pipefilter->sinkpad);
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gst_pad_set_chain_function (pipefilter->sinkpad, gst_pipefilter_chain);
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pipefilter->srcpad =
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gst_pad_new_from_template (gst_static_pad_template_get (&srctemplate),
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"src");
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gst_element_add_pad (GST_ELEMENT (pipefilter), pipefilter->srcpad);
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gst_pad_set_get_function (pipefilter->srcpad, gst_pipefilter_get);
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pipefilter->command = NULL;
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pipefilter->curoffset = 0;
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pipefilter->bytes_per_read = 4096;
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pipefilter->seq = 0;
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}
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static gboolean
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gst_pipefilter_handle_event (GstPad * pad, GstEvent * event)
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{
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GstPipefilter *pipefilter;
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pipefilter = GST_PIPEFILTER (gst_pad_get_parent (pad));
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GST_DEBUG ("pipefilter: %s received event", GST_ELEMENT_NAME (pipefilter));
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switch (GST_EVENT_TYPE (event)) {
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case GST_EVENT_EOS:
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if (close (pipefilter->fdin[1]) < 0)
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perror ("close");
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if (close (pipefilter->fdout[0]) < 0)
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perror ("close");
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break;
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default:
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break;
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}
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gst_pad_event_default (pad, event);
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return TRUE;
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}
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static GstData *
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gst_pipefilter_get (GstPad * pad)
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{
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GstPipefilter *pipefilter;
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GstBuffer *newbuf;
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glong readbytes;
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pipefilter = GST_PIPEFILTER (gst_pad_get_parent (pad));
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/* create the buffer */
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/* FIXME: should eventually use a bufferpool for this */
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newbuf = gst_buffer_new ();
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g_return_val_if_fail (newbuf, NULL);
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/* allocate the space for the buffer data */
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GST_BUFFER_DATA (newbuf) = g_malloc (pipefilter->bytes_per_read);
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g_return_val_if_fail (GST_BUFFER_DATA (newbuf) != NULL, NULL);
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/* read it in from the file */
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GST_DEBUG ("attemting to read %ld bytes", pipefilter->bytes_per_read);
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readbytes =
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read (pipefilter->fdout[0], GST_BUFFER_DATA (newbuf),
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pipefilter->bytes_per_read);
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GST_DEBUG ("read %ld bytes", readbytes);
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if (readbytes < 0) {
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GST_ELEMENT_ERROR (pipefilter, RESOURCE, READ, (NULL), GST_ERROR_SYSTEM);
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return NULL;
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}
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/* if we didn't get as many bytes as we asked for, we're at EOF */
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if (readbytes == 0) {
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return GST_DATA (gst_event_new (GST_EVENT_EOS));
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}
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GST_BUFFER_OFFSET (newbuf) = pipefilter->curoffset;
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GST_BUFFER_SIZE (newbuf) = readbytes;
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pipefilter->curoffset += readbytes;
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return GST_DATA (newbuf);
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}
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static void
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gst_pipefilter_chain (GstPad * pad, GstData * _data)
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{
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GstBuffer *buf;
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GstPipefilter *pipefilter;
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glong writebytes;
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guchar *data;
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gulong size;
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g_return_if_fail (pad != NULL);
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g_return_if_fail (GST_IS_PAD (pad));
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if (GST_IS_EVENT (_data)) {
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gst_pipefilter_handle_event (pad, GST_EVENT (_data));
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return;
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}
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pipefilter = GST_PIPEFILTER (gst_pad_get_parent (pad));
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buf = GST_BUFFER (_data);
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data = GST_BUFFER_DATA (buf);
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size = GST_BUFFER_SIZE (buf);
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GST_DEBUG ("attemting to write %ld bytes", size);
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writebytes = write (pipefilter->fdin[1], data, size);
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GST_DEBUG ("written %ld bytes", writebytes);
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if (writebytes < 0) {
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GST_ELEMENT_ERROR (pipefilter, RESOURCE, WRITE, (NULL), GST_ERROR_SYSTEM);
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return;
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}
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gst_buffer_unref (buf);
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}
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static void
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gst_pipefilter_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstPipefilter *pipefilter;
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g_return_if_fail (GST_IS_PIPEFILTER (object));
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pipefilter = GST_PIPEFILTER (object);
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switch (prop_id) {
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case ARG_COMMAND:
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pipefilter->orig_command = g_strdup (g_value_get_string (value));
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pipefilter->command = g_strsplit (g_value_get_string (value), " ", 0);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gst_pipefilter_get_property (GObject * object, guint prop_id, GValue * value,
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GParamSpec * pspec)
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{
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GstPipefilter *pipefilter;
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g_return_if_fail (GST_IS_PIPEFILTER (object));
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pipefilter = GST_PIPEFILTER (object);
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switch (prop_id) {
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case ARG_COMMAND:
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g_value_set_string (value, pipefilter->orig_command);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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/* open the file, necessary to go to RUNNING state */
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static gboolean
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gst_pipefilter_open_file (GstPipefilter * src)
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{
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g_return_val_if_fail (!GST_OBJECT_FLAG_IS_SET (src, GST_PIPEFILTER_OPEN),
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FALSE);
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pipe (src->fdin);
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pipe (src->fdout);
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if ((src->childpid = fork ()) == -1) {
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GST_ELEMENT_ERROR (src, RESOURCE, TOO_LAZY, (NULL), GST_ERROR_SYSTEM);
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return FALSE;
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}
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if (src->childpid == 0) {
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close (src->fdin[1]);
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close (src->fdout[0]);
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/* child */
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dup2 (src->fdin[0], STDIN_FILENO); /* set the childs input stream */
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dup2 (src->fdout[1], STDOUT_FILENO); /* set the childs output stream */
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execvp (src->command[0], &src->command[0]);
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/* will only be reached if execvp has an error */
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GST_ELEMENT_ERROR (src, RESOURCE, TOO_LAZY, (NULL), GST_ERROR_SYSTEM);
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return FALSE;
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} else {
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close (src->fdin[0]);
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close (src->fdout[1]);
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}
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GST_OBJECT_FLAG_SET (src, GST_PIPEFILTER_OPEN);
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return TRUE;
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}
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/* close the file */
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static void
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gst_pipefilter_close_file (GstPipefilter * src)
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{
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g_return_if_fail (GST_OBJECT_FLAG_IS_SET (src, GST_PIPEFILTER_OPEN));
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/* close the file */
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close (src->fdout[0]);
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close (src->fdout[1]);
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close (src->fdin[0]);
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close (src->fdin[1]);
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/* zero out a lot of our state */
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src->curoffset = 0;
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src->seq = 0;
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GST_OBJECT_FLAG_UNSET (src, GST_PIPEFILTER_OPEN);
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}
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static GstStateChangeReturn
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gst_pipefilter_change_state (GstElement * element, GstStateChange transition)
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{
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g_return_val_if_fail (GST_IS_PIPEFILTER (element), FALSE);
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/* if going down into NULL state, close the file if it's open */
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if (GST_STATE_PENDING (element) == GST_STATE_NULL) {
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if (GST_OBJECT_FLAG_IS_SET (element, GST_PIPEFILTER_OPEN))
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gst_pipefilter_close_file (GST_PIPEFILTER (element));
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/* otherwise (READY or higher) we need to open the file */
|
|
} else {
|
|
if (!GST_OBJECT_FLAG_IS_SET (element, GST_PIPEFILTER_OPEN)) {
|
|
if (!gst_pipefilter_open_file (GST_PIPEFILTER (element)))
|
|
return GST_STATE_CHANGE_FAILURE;
|
|
}
|
|
}
|
|
|
|
if (GST_ELEMENT_CLASS (parent_class)->change_state)
|
|
return GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
|
|
return GST_STATE_CHANGE_SUCCESS;
|
|
}
|