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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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e38f3766a1
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
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* Copyright (c) 2005 Arwed v. Merkatz <v.merkatz@gmx.net>
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* Copyright (c) 1998 - 2005 Conifer Software
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* Copyright (c) 2006 Sebastian Dröge <slomo@circular-chaos.org>
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*
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* gstwavpackcommon.c: common helper functions
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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 "gstwavpackcommon.h"
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#include <string.h>
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GST_DEBUG_CATEGORY_EXTERN (wavpack_debug);
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#define GST_CAT_DEFAULT wavpack_debug
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gboolean
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gst_wavpack_read_header (WavpackHeader * header, guint8 * buf)
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{
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g_memmove (header, buf, sizeof (WavpackHeader));
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#ifndef WAVPACK_OLD_API
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WavpackLittleEndianToNative (header, WavpackHeaderFormat);
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#else
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little_endian_to_native (header, WavpackHeaderFormat);
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#endif
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return (memcmp (header->ckID, "wvpk", 4) == 0);
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}
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/* inspired by the original one in wavpack */
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gboolean
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gst_wavpack_read_metadata (GstWavpackMetadata * wpmd, guint8 * header_data,
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guint8 ** p_data)
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{
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WavpackHeader hdr;
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guint8 *end;
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gst_wavpack_read_header (&hdr, header_data);
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end = header_data + hdr.ckSize + 8;
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if (end - *p_data < 2)
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return FALSE;
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wpmd->id = GST_READ_UINT8 (*p_data);
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wpmd->byte_length = 2 * (guint) GST_READ_UINT8 (*p_data + 1);
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*p_data += 2;
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if ((wpmd->id & ID_LARGE) == ID_LARGE) {
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guint extra;
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wpmd->id &= ~ID_LARGE;
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if (end - *p_data < 2)
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return FALSE;
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extra = GST_READ_UINT16_LE (*p_data);
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wpmd->byte_length += (extra << 9);
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*p_data += 2;
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}
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if ((wpmd->id & ID_ODD_SIZE) == ID_ODD_SIZE) {
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wpmd->id &= ~ID_ODD_SIZE;
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--wpmd->byte_length;
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}
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if (wpmd->byte_length > 0) {
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if (end - *p_data < wpmd->byte_length + (wpmd->byte_length & 1)) {
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wpmd->data = NULL;
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return FALSE;
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}
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wpmd->data = *p_data;
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*p_data += wpmd->byte_length + (wpmd->byte_length & 1);
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} else {
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wpmd->data = NULL;
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}
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return TRUE;
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}
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