gstreamer/ext/wavpack/gstwavpackstreamreader.c

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configure.ac: Check for wavpack version and define WAVPACK_OLD_API if necessary. Original commit message from CVS: Patch by: Sebastian Dröge <slomo at circular-chaos.org> * configure.ac: Check for wavpack version and define WAVPACK_OLD_API if necessary. * ext/wavpack/Makefile.am: * ext/wavpack/gstwavpackcommon.c: (gst_wavpack_read_header), (gst_wavpack_read_metadata): * ext/wavpack/gstwavpackcommon.h: * ext/wavpack/gstwavpackdec.c: (gst_wavpack_dec_base_init), (gst_wavpack_dec_class_init), (gst_wavpack_dec_init), (gst_wavpack_dec_finalize), (gst_wavpack_dec_format_samples), (gst_wavpack_dec_clip_outgoing_buffer), (gst_wavpack_dec_chain), (gst_wavpack_dec_sink_event), (gst_wavpack_dec_change_state), (gst_wavpack_dec_request_new_pad), (gst_wavpack_dec_plugin_init): * ext/wavpack/gstwavpackdec.h: * ext/wavpack/gstwavpackenc.c: (gst_wavpack_enc_class_init), (gst_wavpack_enc_init), (gst_wavpack_enc_finalize), (gst_wavpack_enc_set_wp_config): * ext/wavpack/gstwavpackparse.c: (gst_wavpack_parse_base_init), (gst_wavpack_parse_finalize), (gst_wavpack_parse_class_init), (gst_wavpack_parse_index_get_entry_from_sample), (gst_wavpack_parse_scan_to_find_sample), (gst_wavpack_parse_handle_seek_event), (gst_wavpack_parse_create_src_pad): * ext/wavpack/gstwavpackstreamreader.c: * ext/wavpack/gstwavpackstreamreader.h: Port to new/official wavpack API, don't use API that was exported in wavpack header files and in the lib but meant to be private, at least not for recent wavpack versions; misc. 'cleanups' (#347443).
2006-07-18 14:08:06 +00:00
/* GStreamer Wavpack plugin
* Copyright (c) 2006 Sebastian Dröge <slomo@circular-chaos.org>
*
* gstwavpackstreamreader.c: stream reader used for decoding
*
* 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.
*/
#include <string.h>
#include <math.h>
#include <gst/gst.h>
#include "gstwavpackstreamreader.h"
static int32_t
gst_wavpack_stream_reader_read_bytes (void *id, void *data, int32_t bcount)
{
read_id *rid = (read_id *) id;
uint32_t left = rid->length - rid->position;
uint32_t to_read = MIN (left, bcount);
if (to_read > 0) {
g_memmove (data, rid->buffer + rid->position, to_read);
rid->position += to_read;
return to_read;
} else {
return 0;
}
}
static uint32_t
gst_wavpack_stream_reader_get_pos (void *id)
{
return ((read_id *) id)->position;
}
static int
gst_wavpack_stream_reader_set_pos_abs (void *id, uint32_t pos)
{
return -1;
}
static int
gst_wavpack_stream_reader_set_pos_rel (void *id, int32_t delta, int mode)
{
return -1;
}
static int
gst_wavpack_stream_reader_push_back_byte (void *id, int c)
{
read_id *rid = (read_id *) id;
rid->position -= 1;
if (rid->position < 0)
rid->position = 0;
return rid->position;
}
static uint32_t
gst_wavpack_stream_reader_get_length (void *id)
{
return ((read_id *) id)->length;
}
static int
gst_wavpack_stream_reader_can_seek (void *id)
{
return FALSE;
}
static int32_t
gst_wavpack_stream_reader_write_bytes (void *id, void *data, int32_t bcount)
{
return 0;
}
WavpackStreamReader *
gst_wavpack_stream_reader_new ()
{
WavpackStreamReader *stream_reader =
(WavpackStreamReader *) g_malloc0 (sizeof (WavpackStreamReader));
stream_reader->read_bytes = gst_wavpack_stream_reader_read_bytes;
stream_reader->get_pos = gst_wavpack_stream_reader_get_pos;
stream_reader->set_pos_abs = gst_wavpack_stream_reader_set_pos_abs;
stream_reader->set_pos_rel = gst_wavpack_stream_reader_set_pos_rel;
stream_reader->push_back_byte = gst_wavpack_stream_reader_push_back_byte;
stream_reader->get_length = gst_wavpack_stream_reader_get_length;
stream_reader->can_seek = gst_wavpack_stream_reader_can_seek;
stream_reader->write_bytes = gst_wavpack_stream_reader_write_bytes;
return stream_reader;
}