mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-28 04:31:06 +00:00
49e29a2716
Original commit message from CVS: * ext/wavpack/gstwavpack.c: (plugin_init): * ext/wavpack/gstwavpackcommon.c: Use a general wavpack debug category for common code. * ext/wavpack/gstwavpackstreamreader.c: (gst_wavpack_stream_reader_set_pos_abs), (gst_wavpack_stream_reader_set_pos_rel), (gst_wavpack_stream_reader_write_bytes): Use the general wavpack debug category here too and add debug output to the functions that should not be called at all by the wavpack library. * ext/wavpack/gstwavpackdec.c: (gst_wavpack_dec_plugin_init): * ext/wavpack/gstwavpackenc.c: (gst_wavpack_enc_plugin_init): * ext/wavpack/gstwavpackparse.c: (gst_wavpack_parse_plugin_init): Change debugging category names to conform to the conventions.
98 lines
2.5 KiB
C
98 lines
2.5 KiB
C
/* GStreamer Wavpack plugin
|
|
* Copyright (c) 2005 Arwed v. Merkatz <v.merkatz@gmx.net>
|
|
* Copyright (c) 1998 - 2005 Conifer Software
|
|
* Copyright (c) 2006 Sebastian Dröge <slomo@circular-chaos.org>
|
|
*
|
|
* gstwavpackcommon.c: common helper functions
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include "gstwavpackcommon.h"
|
|
#include <string.h>
|
|
|
|
GST_DEBUG_CATEGORY_EXTERN (wavpack_debug);
|
|
#define GST_CAT_DEFAULT wavpack_debug
|
|
|
|
gboolean
|
|
gst_wavpack_read_header (WavpackHeader * header, guint8 * buf)
|
|
{
|
|
g_memmove (header, buf, sizeof (WavpackHeader));
|
|
|
|
#ifndef WAVPACK_OLD_API
|
|
WavpackLittleEndianToNative (header, WavpackHeaderFormat);
|
|
#else
|
|
little_endian_to_native (header, WavpackHeaderFormat);
|
|
#endif
|
|
|
|
return (memcmp (header->ckID, "wvpk", 4) == 0);
|
|
}
|
|
|
|
/* inspired by the original one in wavpack */
|
|
gboolean
|
|
gst_wavpack_read_metadata (GstWavpackMetadata * wpmd, guint8 * header_data,
|
|
guint8 ** p_data)
|
|
{
|
|
WavpackHeader hdr;
|
|
guint8 *end;
|
|
|
|
gst_wavpack_read_header (&hdr, header_data);
|
|
end = header_data + hdr.ckSize + 8;
|
|
|
|
if (end - *p_data < 2)
|
|
return FALSE;
|
|
|
|
wpmd->id = GST_READ_UINT8 (*p_data);
|
|
wpmd->byte_length = 2 * (guint) GST_READ_UINT8 (*p_data + 1);
|
|
|
|
*p_data += 2;
|
|
|
|
if ((wpmd->id & ID_LARGE) == ID_LARGE) {
|
|
guint extra;
|
|
|
|
wpmd->id &= ~ID_LARGE;
|
|
|
|
if (end - *p_data < 2)
|
|
return FALSE;
|
|
|
|
extra = GST_READ_UINT16_LE (*p_data);
|
|
wpmd->byte_length += (extra << 9);
|
|
*p_data += 2;
|
|
}
|
|
|
|
if ((wpmd->id & ID_ODD_SIZE) == ID_ODD_SIZE) {
|
|
wpmd->id &= ~ID_ODD_SIZE;
|
|
--wpmd->byte_length;
|
|
}
|
|
|
|
if (wpmd->byte_length > 0) {
|
|
if (end - *p_data < wpmd->byte_length + (wpmd->byte_length & 1)) {
|
|
wpmd->data = NULL;
|
|
return FALSE;
|
|
}
|
|
|
|
wpmd->data = *p_data;
|
|
*p_data += wpmd->byte_length + (wpmd->byte_length & 1);
|
|
} else {
|
|
wpmd->data = NULL;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|