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984afa2453
Original commit message from CVS: * ext/musepack/gstmusepackreader.cpp: Workaround for older core.
145 lines
3.4 KiB
C
145 lines
3.4 KiB
C
/* GStreamer Musepack decoder plugin
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* Copyright (C) 2004 Ronald Bultje <rbultje@ronald.bitfreak.net>
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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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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <gst/gst.h>
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#include <string.h>
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#include "gstmusepackreader.h"
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GstMusepackReader::GstMusepackReader (GstByteStream *bs)
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{
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this->bs = bs;
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this->eos = false;
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}
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GstMusepackReader::~GstMusepackReader (void)
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{
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}
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mpc_int32_t
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GstMusepackReader::read (void * ptr, mpc_int32_t size)
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{
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guint8 *data;
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gint read;
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do {
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read = gst_bytestream_peek_bytes (this->bs, &data, size);
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if (read != size) {
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GstEvent *event;
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guint32 remaining;
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gst_bytestream_get_status (this->bs, &remaining, &event);
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if (!event) {
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GST_ELEMENT_ERROR (gst_pad_get_parent (this->bs->pad),
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RESOURCE, READ, (NULL), (NULL));
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goto done;
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}
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switch (GST_EVENT_TYPE (event)) {
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case GST_EVENT_INTERRUPT:
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gst_event_unref (event);
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goto done;
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case GST_EVENT_EOS:
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this->eos = true;
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gst_event_unref (event);
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goto done;
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default:
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gst_pad_event_default (this->bs->pad, event);
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break;
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}
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}
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} while (read != size);
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done:
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if (read != 0) {
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memcpy (ptr, data, read);
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gst_bytestream_flush_fast (this->bs, read);
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}
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return read;
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}
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bool
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GstMusepackReader::seek (mpc_int32_t offset)
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{
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guint8 *dummy;
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/* hacky hack - if we're after typefind, we'll fail because
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* typefind is still typefinding (heh :) ). So read first. */
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if (this->tell () != this->get_size ()) {
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guint8 dummy2[1];
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this->read (dummy2, 1);
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}
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if (!gst_bytestream_seek (this->bs, offset, GST_SEEK_METHOD_SET))
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return FALSE;
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/* get discont */
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while (gst_bytestream_peek_bytes (this->bs, &dummy, 1) != 1) {
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GstEvent *event;
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guint32 remaining;
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gst_bytestream_get_status (this->bs, &remaining, &event);
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if (!event) {
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GST_ELEMENT_ERROR (gst_pad_get_parent (this->bs->pad),
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RESOURCE, SEEK, (NULL), (NULL));
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return false;
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}
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switch (GST_EVENT_TYPE (event)) {
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case GST_EVENT_EOS:
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g_warning ("EOS!");
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gst_event_unref (event);
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return false;
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case GST_EVENT_DISCONTINUOUS:
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gst_event_unref (event);
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return true;
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case GST_EVENT_INTERRUPT:
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g_warning ("interrupt!");
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return false;
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default:
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gst_pad_event_default (this->bs->pad, event);
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break;
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}
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}
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return false;
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}
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mpc_int32_t
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GstMusepackReader::tell (void)
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{
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return gst_bytestream_tell (this->bs);
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}
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mpc_int32_t
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GstMusepackReader::get_size (void)
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{
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return gst_bytestream_length (this->bs);
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}
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bool
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GstMusepackReader::canseek (void)
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{
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return true;
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}
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