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136 lines
2.8 KiB
C
136 lines
2.8 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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#include <string.h>
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#include <errno.h>
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#include "config.h"
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#ifdef HAVE_FFMPEG_UNINSTALLED
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#include <avformat.h>
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#else
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#include <ffmpeg/avformat.h>
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#endif
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#include <gst/gst.h>
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#include <gst/bytestream/bytestream.h>
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typedef struct _GstProtocolInfo GstProtocolInfo;
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struct _GstProtocolInfo
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{
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GstPad *pad;
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int flags;
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GstByteStream *bs;
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gboolean eos;
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};
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static int
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gst_open (URLContext *h, const char *filename, int flags)
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{
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GstProtocolInfo *info;
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GstPad *pad;
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info = g_new0 (GstProtocolInfo, 1);
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info->flags = flags;
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if (sscanf (&filename[12], "%p", &pad) != 1) {
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g_warning ("could not decode pad from %s", &filename[12]);
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return -EIO;
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}
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if (!GST_IS_PAD (pad)) {
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g_warning ("decoded string is not a pad, %s", &filename[12]);
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return -EIO;
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}
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info->bs = gst_bytestream_new (pad);
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info->eos = FALSE;
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h->priv_data = (void *) info;
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return 0;
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}
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static int
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gst_read (URLContext *h, unsigned char *buf, int size)
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{
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GstByteStream *bs;
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guint32 total;
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guint8 *data;
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GstProtocolInfo *info;
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info = (GstProtocolInfo *) h->priv_data;
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bs = info->bs;
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if (info->eos)
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return 0;
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total = gst_bytestream_peek_bytes (bs, &data, size);
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if (total < size) {
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GstEvent *event;
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guint32 remaining;
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gst_bytestream_get_status (bs, &remaining, &event);
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if (!event) {
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g_warning ("gstffmpegprotocol: no bytestream event");
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return total;
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}
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switch (GST_EVENT_TYPE (event)) {
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case GST_EVENT_DISCONTINUOUS:
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gst_bytestream_flush_fast (bs, remaining);
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case GST_EVENT_EOS:
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info->eos = TRUE;
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break;
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default:
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break;
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}
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gst_event_unref (event);
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}
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memcpy (buf, data, total);
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gst_bytestream_flush (bs, total);
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return total;
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}
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static int gst_write(URLContext *h, unsigned char *buf, int size)
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{
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g_print ("write %p, %d\n", buf, size);
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return 0;
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}
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static int gst_close(URLContext *h)
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{
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return 0;
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}
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URLProtocol gstreamer_protocol = {
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"gstreamer",
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gst_open,
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gst_read,
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gst_write,
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NULL,
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gst_close,
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};
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