20
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/*
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* Copyright (c) 2006 Christophe Fergeau <teuf@gnome.org>
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* Copyright (c) 2008 Sebastian Dröge <slomo@circular-chaos.org>
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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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/* Xing SDK: http://www.mp3-tech.org/programmer/sources/vbrheadersdk.zip */
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/**
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* SECTION:element-xingmux
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*
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* xingmux adds a Xing header to MP3 files. This contains information about the duration and size
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* of the file and a seek table and is very useful for getting an almost correct duration and better
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* seeking on VBR MP3 files.
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*
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* This element will remove any existing Xing, LAME or VBRI headers from the beginning of the file.
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*
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* <refsect2>
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* <title>Example launch line</title>
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* |[
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* gst-launch audiotestsrc num-buffers=1000 ! audioconvert ! lame ! xingmux ! filesink location=test.mp3
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* gst-launch filesrc location=test.mp3 ! xingmux ! filesink location=test2.mp3
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* gst-launch filesrc location=test.mp3 ! mp3parse ! xingmux ! filesink location=test2.mp3
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* ]|
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* </refsect2>
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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 <string.h>
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#include "gstxingmux.h"
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GST_DEBUG_CATEGORY_STATIC (xing_mux_debug);
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#define GST_CAT_DEFAULT xing_mux_debug
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GST_BOILERPLATE (GstXingMux, gst_xing_mux, GstElement, GST_TYPE_ELEMENT);
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/* Xing Header stuff */
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#define GST_XING_FRAME_FIELD (1 << 0)
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#define GST_XING_BYTES_FIELD (1 << 1)
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#define GST_XING_TOC_FIELD (1 << 2)
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#define GST_XING_QUALITY_FIELD (1 << 3)
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typedef struct _GstXingSeekEntry
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{
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gint64 timestamp;
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gint byte;
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} GstXingSeekEntry;
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static inline GstXingSeekEntry *
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gst_xing_seek_entry_new ()
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{
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return g_slice_new (GstXingSeekEntry);
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}
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static inline void
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gst_xing_seek_entry_free (GstXingSeekEntry * entry)
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{
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g_slice_free (GstXingSeekEntry, entry);
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}
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static void gst_xing_mux_finalize (GObject * obj);
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static GstStateChangeReturn
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gst_xing_mux_change_state (GstElement * element, GstStateChange transition);
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static GstFlowReturn gst_xing_mux_chain (GstPad * pad, GstBuffer * buffer);
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static gboolean gst_xing_mux_sink_event (GstPad * pad, GstEvent * event);
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static GstStaticPadTemplate gst_xing_mux_sink_template =
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GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS ("audio/mpeg, "
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"mpegversion = (int) 1, " "layer = (int) [ 1, 3 ]"));
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static GstStaticPadTemplate gst_xing_mux_src_template =
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GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS ("audio/mpeg, "
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"mpegversion = (int) 1, " "layer = (int) [ 1, 3 ]"));
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static const guint mp3types_bitrates[2][3][16] = {
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{
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{0, 32, 64, 96, 128, 160, 192, 224, 256, 288, 320, 352, 384, 416, 448,},
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{0, 32, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, 384,},
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{0, 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320,}
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},
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{
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{0, 32, 48, 56, 64, 80, 96, 112, 128, 144, 160, 176, 192, 224, 256,},
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{0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160,},
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{0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160,}
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},
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};
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static const guint mp3types_freqs[3][3] = { {44100, 48000, 32000},
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{22050, 24000, 16000},
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{11025, 12000, 8000}
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};
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static gboolean
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parse_header (guint32 header, guint * ret_size, guint * ret_spf,
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gulong * ret_rate)
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{
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guint length, spf;
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gulong samplerate, bitrate, layer, padding;
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gint lsf, mpg25;
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if ((header & 0xffe00000) != 0xffe00000) {
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g_warning ("invalid sync");
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return FALSE;
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}
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if (((header >> 19) & 3) == 0x01) {
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g_warning ("invalid MPEG version");
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return FALSE;
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}
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if (((header >> 17) & 3) == 0x00) {
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g_warning ("invalid MPEG layer");
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return FALSE;
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}
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if (((header >> 12) & 0xf) == 0xf || ((header >> 12) & 0xf) == 0x0) {
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g_warning ("invalid bitrate");
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return FALSE;
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}
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if (((header >> 10) & 0x3) == 0x3) {
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g_warning ("invalid sampling rate");
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return FALSE;
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}
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if (header & 0x00000002) {
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g_warning ("invalid emphasis");
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return FALSE;
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}
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if (header & (1 << 20)) {
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lsf = (header & (1 << 19)) ? 0 : 1;
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mpg25 = 0;
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} else {
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lsf = 1;
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mpg25 = 1;
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}
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layer = 4 - ((header >> 17) & 0x3);
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bitrate = (header >> 12) & 0xF;
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bitrate = mp3types_bitrates[lsf][layer - 1][bitrate] * 1000;
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if (bitrate == 0)
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return 0;
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samplerate = (header >> 10) & 0x3;
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samplerate = mp3types_freqs[lsf + mpg25][samplerate];
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padding = (header >> 9) & 0x1;
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switch (layer) {
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case 1:
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length = 4 * ((bitrate * 12) / samplerate + padding);
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break;
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case 2:
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length = (bitrate * 144) / samplerate + padding;
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break;
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default:
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case 3:
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length = (bitrate * 144) / (samplerate << lsf) + padding;
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break;
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}
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if (layer == 1)
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spf = 384;
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else if (layer == 2 || lsf == 0)
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spf = 1152;
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else
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spf = 576;
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if (ret_size)
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*ret_size = length;
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if (ret_spf)
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*ret_spf = spf;
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if (ret_rate)
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*ret_rate = samplerate;
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return TRUE;
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}
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static guint
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get_xing_offset (guint32 header)
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{
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guint mpeg_version = (header >> 19) & 0x3;
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guint channel_mode = (header >> 6) & 0x3;
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if (mpeg_version == 0x3) {
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if (channel_mode == 0x3) {
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return 0x11;
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} else {
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return 0x20;
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}
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} else {
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if (channel_mode == 0x3) {
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return 0x09;
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} else {
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return 0x11;
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}
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}
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}
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static gboolean
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has_xing_header (guint32 header, guchar * data, gsize size)
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{
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data += 4;
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data += get_xing_offset (header);
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if (memcmp (data, "Xing", 4) == 0 ||
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memcmp (data, "Info", 4) == 0 || memcmp (data, "VBRI", 4) == 0)
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return TRUE;
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else
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return FALSE;
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}
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static GstBuffer *
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generate_xing_header (GstXingMux * xing)
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{
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guint8 *xing_flags;
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guint32 xing_flags_tmp = 0;
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GstBuffer *xing_header;
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guchar *data;
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guint32 header;
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guint32 header_be;
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guint size, spf, xing_offset;
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gulong rate;
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guint bitrate = 0x00;
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gint64 duration;
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gint64 byte_count;
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header = xing->first_header;
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/* Set bitrate and choose lowest possible size */
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do {
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bitrate++;
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header &= 0xffff0fff;
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header |= bitrate << 12;
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parse_header (header, &size, &spf, &rate);
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xing_offset = get_xing_offset (header);
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} while (size < (4 + xing_offset + 4 + 4 + 4 + 4 + 100) && bitrate < 0xe);
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if (bitrate == 0xe) {
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GST_ERROR ("No usable bitrate found!");
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return NULL;
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}
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if (gst_pad_alloc_buffer_and_set_caps (xing->srcpad, 0, size,
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GST_PAD_CAPS (xing->srcpad), &xing_header) != GST_FLOW_OK) {
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xing_header = gst_buffer_new_and_alloc (size);
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gst_buffer_set_caps (xing_header, GST_PAD_CAPS (xing->srcpad));
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}
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data = GST_BUFFER_DATA (xing_header);
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memset (data, 0, size);
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header_be = GUINT32_TO_BE (header);
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memcpy (data, &header_be, 4);
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data += 4;
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data += xing_offset;
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memcpy (data, "Xing", 4);
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data += 4;
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xing_flags = data;
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data += 4;
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293 |
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if (xing->duration != GST_CLOCK_TIME_NONE) {
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duration = xing->duration;
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} else {
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GstFormat fmt = GST_FORMAT_TIME;
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298 |
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if (!gst_pad_query_peer_duration (xing->sinkpad, &fmt, &duration))
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duration = GST_CLOCK_TIME_NONE;
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}
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if (duration != GST_CLOCK_TIME_NONE) {
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guint32 number_of_frames;
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305 |
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/* The Xing Header contains a NumberOfFrames field, which verifies to:
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* Duration = NumberOfFrames *SamplesPerFrame/SamplingRate
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* SamplesPerFrame and SamplingRate are values for the current frame.
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*/
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number_of_frames = gst_util_uint64_scale (duration, rate, GST_SECOND) / spf;
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GST_DEBUG ("Setting number of frames to %u", number_of_frames);
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number_of_frames = GUINT32_TO_BE (number_of_frames);
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memcpy (data, &number_of_frames, 4);
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xing_flags_tmp |= GST_XING_FRAME_FIELD;
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data += 4;
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}
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317 |
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318 |
if (xing->byte_count != 0) {
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byte_count = xing->byte_count;
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} else {
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GstFormat fmt = GST_FORMAT_BYTES;
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322 |
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if (!gst_pad_query_peer_duration (xing->sinkpad, &fmt, &byte_count))
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byte_count = 0;
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325 |
if (byte_count == -1)
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byte_count = 0;
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}
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328 |
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329 |
if (byte_count != 0) {
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330 |
guint32 nbytes;
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331 |
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332 |
if (byte_count > G_MAXUINT32) {
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GST_DEBUG ("Too large stream: %" G_GINT64_FORMAT " > %u bytes",
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byte_count, G_MAXUINT32);
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} else {
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336 |
nbytes = byte_count;
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337 |
GST_DEBUG ("Setting number of bytes to %u", nbytes);
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338 |
nbytes = GUINT32_TO_BE (nbytes);
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339 |
memcpy (data, &nbytes, 4);
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340 |
xing_flags_tmp |= GST_XING_BYTES_FIELD;
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341 |
data += 4;
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342 |
}
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343 |
}
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344 |
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345 |
if (xing->seek_table != NULL && byte_count != 0
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346 |
&& duration != GST_CLOCK_TIME_NONE) {
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347 |
GList *it;
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348 |
gint percent = 0;
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349 |
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350 |
xing_flags_tmp |= GST_XING_TOC_FIELD;
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351 |
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352 |
GST_DEBUG ("Writing seek table");
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353 |
for (it = xing->seek_table; it != NULL && percent < 100; it = it->next) {
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354 |
GstXingSeekEntry *entry = (GstXingSeekEntry *) it->data;
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355 |
gint64 pos;
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356 |
guchar byte;
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357 |
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358 |
while ((entry->timestamp * 100) / duration >= percent) {
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359 |
pos = (entry->byte * 256) / byte_count;
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360 |
GST_DEBUG (" %d %% -- %" G_GINT64_FORMAT " 1/256", percent, pos);
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361 |
byte = (guchar) pos;
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362 |
memcpy (data, &byte, 1);
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363 |
data++;
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364 |
percent++;
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|
365 |
}
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|
366 |
}
|
|
367 |
|
|
368 |
if (percent < 100) {
|
|
369 |
guchar b;
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|
370 |
gint i;
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371 |
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372 |
memcpy (&b, data - 1, 1);
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373 |
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374 |
for (i = percent; i < 100; i++) {
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375 |
GST_DEBUG (" %d %% -- %d 1/256", i, b);
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376 |
memcpy (data, &b, 1);
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377 |
data++;
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|
378 |
}
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|
379 |
}
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|
380 |
}
|
|
381 |
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|
382 |
GST_DEBUG ("Setting Xing flags to 0x%x\n", xing_flags_tmp);
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|
383 |
xing_flags_tmp = GUINT32_TO_BE (xing_flags_tmp);
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|
384 |
memcpy (xing_flags, &xing_flags_tmp, 4);
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|
385 |
return xing_header;
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|
386 |
}
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|
387 |
|
|
388 |
static void
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|
389 |
gst_xing_mux_base_init (gpointer g_class)
|
|
390 |
{
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|
391 |
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
|
|
392 |
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|
393 |
static const GstElementDetails gst_xing_mux_details =
|
|
394 |
GST_ELEMENT_DETAILS ("MP3 Xing muxer",
|
|
395 |
"Formatter/Metadata",
|
|
396 |
"Adds a Xing header to the beginning of a VBR MP3 file",
|
|
397 |
"Christophe Fergeau <teuf@gnome.org>");
|
|
398 |
|
|
399 |
gst_element_class_add_pad_template (element_class,
|
|
400 |
gst_static_pad_template_get (&gst_xing_mux_src_template));
|
|
401 |
gst_element_class_add_pad_template (element_class,
|
|
402 |
gst_static_pad_template_get (&gst_xing_mux_sink_template));
|
|
403 |
|
|
404 |
GST_DEBUG_CATEGORY_INIT (xing_mux_debug, "xingmux", 0, "Xing Header Muxer");
|
|
405 |
|
|
406 |
gst_element_class_set_details (element_class, &gst_xing_mux_details);
|
|
407 |
}
|
|
408 |
|
|
409 |
static void
|
|
410 |
gst_xing_mux_class_init (GstXingMuxClass * klass)
|
|
411 |
{
|
|
412 |
GObjectClass *gobject_class;
|
|
413 |
GstElementClass *gstelement_class;
|
|
414 |
|
|
415 |
gobject_class = (GObjectClass *) klass;
|
|
416 |
gstelement_class = (GstElementClass *) klass;
|
|
417 |
|
|
418 |
gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_xing_mux_finalize);
|
|
419 |
gstelement_class->change_state =
|
|
420 |
GST_DEBUG_FUNCPTR (gst_xing_mux_change_state);
|
|
421 |
}
|
|
422 |
|
|
423 |
static void
|
|
424 |
gst_xing_mux_finalize (GObject * obj)
|
|
425 |
{
|
|
426 |
GstXingMux *xing = GST_XING_MUX (obj);
|
|
427 |
|
|
428 |
if (xing->adapter) {
|
|
429 |
g_object_unref (xing->adapter);
|
|
430 |
xing->adapter = NULL;
|
|
431 |
}
|
|
432 |
|
|
433 |
if (xing->seek_table) {
|
|
434 |
g_list_foreach (xing->seek_table, (GFunc) gst_xing_seek_entry_free, NULL);
|
|
435 |
g_list_free (xing->seek_table);
|
|
436 |
xing->seek_table = NULL;
|
|
437 |
}
|
|
438 |
|
|
439 |
G_OBJECT_CLASS (parent_class)->finalize (obj);
|
|
440 |
}
|
|
441 |
|
|
442 |
static void
|
|
443 |
xing_reset (GstXingMux * xing)
|
|
444 |
{
|
|
445 |
xing->duration = GST_CLOCK_TIME_NONE;
|
|
446 |
xing->byte_count = 0;
|
|
447 |
|
|
448 |
gst_adapter_clear (xing->adapter);
|
|
449 |
|
|
450 |
if (xing->seek_table) {
|
|
451 |
g_list_foreach (xing->seek_table, (GFunc) gst_xing_seek_entry_free, NULL);
|
|
452 |
g_list_free (xing->seek_table);
|
|
453 |
xing->seek_table = NULL;
|
|
454 |
}
|
|
455 |
|
|
456 |
xing->sent_xing = FALSE;
|
|
457 |
}
|
|
458 |
|
|
459 |
|
|
460 |
static void
|
|
461 |
gst_xing_mux_init (GstXingMux * xing, GstXingMuxClass * xingmux_class)
|
|
462 |
{
|
|
463 |
GstElementClass *klass = GST_ELEMENT_CLASS (xingmux_class);
|
|
464 |
|
|
465 |
/* pad through which data comes in to the element */
|
|
466 |
xing->sinkpad =
|
|
467 |
gst_pad_new_from_template (gst_element_class_get_pad_template (klass,
|
|
468 |
"sink"), "sink");
|
|
469 |
gst_pad_set_setcaps_function (xing->sinkpad,
|
|
470 |
GST_DEBUG_FUNCPTR (gst_pad_proxy_setcaps));
|
|
471 |
gst_pad_set_chain_function (xing->sinkpad,
|
|
472 |
GST_DEBUG_FUNCPTR (gst_xing_mux_chain));
|
|
473 |
gst_pad_set_event_function (xing->sinkpad,
|
|
474 |
GST_DEBUG_FUNCPTR (gst_xing_mux_sink_event));
|
|
475 |
gst_element_add_pad (GST_ELEMENT (xing), xing->sinkpad);
|
|
476 |
|
|
477 |
/* pad through which data goes out of the element */
|
|
478 |
xing->srcpad =
|
|
479 |
gst_pad_new_from_template (gst_element_class_get_pad_template (klass,
|
|
480 |
"src"), "src");
|
|
481 |
gst_element_add_pad (GST_ELEMENT (xing), xing->srcpad);
|
|
482 |
|
|
483 |
xing->adapter = gst_adapter_new ();
|
|
484 |
|
|
485 |
xing_reset (xing);
|
|
486 |
}
|
|
487 |
|
|
488 |
static GstFlowReturn
|
|
489 |
gst_xing_mux_chain (GstPad * pad, GstBuffer * buffer)
|
|
490 |
{
|
|
491 |
GstXingMux *xing = GST_XING_MUX (GST_PAD_PARENT (pad));
|
|
492 |
GstFlowReturn ret = GST_FLOW_OK;
|
|
493 |
|
|
494 |
gst_adapter_push (xing->adapter, buffer);
|
|
495 |
|
|
496 |
while (gst_adapter_available (xing->adapter) >= 4) {
|
|
497 |
const guchar *data = gst_adapter_peek (xing->adapter, 4);
|
|
498 |
guint32 header;
|
|
499 |
GstBuffer *outbuf;
|
|
500 |
GstClockTime duration;
|
|
501 |
guint size, spf;
|
|
502 |
gulong rate;
|
|
503 |
GstXingSeekEntry *seek_entry;
|
|
504 |
|
|
505 |
header = GST_READ_UINT32_BE (data);
|
|
506 |
|
|
507 |
if (!parse_header (header, &size, &spf, &rate)) {
|
|
508 |
GST_DEBUG ("Lost sync, resyncing");
|
|
509 |
gst_adapter_flush (xing->adapter, 1);
|
|
510 |
continue;
|
|
511 |
}
|
|
512 |
|
|
513 |
if (gst_adapter_available (xing->adapter) < size)
|
|
514 |
break;
|
|
515 |
|
|
516 |
outbuf = gst_adapter_take_buffer (xing->adapter, size);
|
|
517 |
gst_buffer_set_caps (outbuf, GST_PAD_CAPS (xing->srcpad));
|
|
518 |
|
|
519 |
if (!xing->sent_xing) {
|
|
520 |
if (has_xing_header (header, GST_BUFFER_DATA (outbuf), size)) {
|
|
521 |
GST_LOG_OBJECT (xing, "Dropping old Xing header");
|
|
522 |
gst_buffer_unref (outbuf);
|
|
523 |
continue;
|
|
524 |
} else {
|
|
525 |
GstBuffer *xing_header;
|
|
526 |
guint64 xing_header_size;
|
|
527 |
|
|
528 |
xing->first_header = header;
|
|
529 |
|
|
530 |
xing_header = generate_xing_header (xing);
|
|
531 |
|
|
532 |
if (xing_header == NULL) {
|
|
533 |
GST_ERROR ("Can't generate Xing header");
|
|
534 |
gst_buffer_unref (outbuf);
|
|
535 |
return GST_FLOW_ERROR;
|
|
536 |
}
|
|
537 |
|
|
538 |
xing_header_size = GST_BUFFER_SIZE (xing_header);
|
|
539 |
|
|
540 |
if (GST_FLOW_IS_FATAL (ret = gst_pad_push (xing->srcpad, xing_header))) {
|
|
541 |
GST_ERROR_OBJECT (xing, "Failed to push Xing header: %s",
|
|
542 |
gst_flow_get_name (ret));
|
|
543 |
gst_buffer_unref (xing_header);
|
|
544 |
gst_buffer_unref (outbuf);
|
|
545 |
return ret;
|
|
546 |
}
|
|
547 |
|
|
548 |
xing->byte_count += xing_header_size;
|
|
549 |
xing->sent_xing = TRUE;
|
|
550 |
}
|
|
551 |
}
|
|
552 |
|
|
553 |
seek_entry = gst_xing_seek_entry_new ();
|
|
554 |
seek_entry->timestamp =
|
|
555 |
(xing->duration == GST_CLOCK_TIME_NONE) ? 0 : xing->duration;
|
|
556 |
/* Workaround for parsers checking that the first seek table entry is 0 */
|
|
557 |
seek_entry->byte = (seek_entry->timestamp == 0) ? 0 : xing->byte_count;
|
|
558 |
xing->seek_table = g_list_append (xing->seek_table, seek_entry);
|
|
559 |
|
|
560 |
duration = gst_util_uint64_scale (spf, GST_SECOND, rate);
|
|
561 |
|
|
562 |
GST_BUFFER_TIMESTAMP (outbuf) =
|
|
563 |
(xing->duration == GST_CLOCK_TIME_NONE) ? 0 : xing->duration;
|
|
564 |
GST_BUFFER_DURATION (outbuf) = duration;
|
|
565 |
GST_BUFFER_OFFSET (outbuf) = xing->byte_count;
|
|
566 |
GST_BUFFER_OFFSET_END (outbuf) =
|
|
567 |
xing->byte_count + GST_BUFFER_SIZE (outbuf);
|
|
568 |
|
|
569 |
xing->byte_count += GST_BUFFER_SIZE (outbuf);
|
|
570 |
|
|
571 |
if (xing->duration == GST_CLOCK_TIME_NONE)
|
|
572 |
xing->duration = duration;
|
|
573 |
else
|
|
574 |
xing->duration += duration;
|
|
575 |
|
|
576 |
if (GST_FLOW_IS_FATAL (ret = gst_pad_push (xing->srcpad, outbuf))) {
|
|
577 |
GST_ERROR_OBJECT (xing, "Failed to push MP3 frame: %s",
|
|
578 |
gst_flow_get_name (ret));
|
|
579 |
return ret;
|
|
580 |
}
|
|
581 |
}
|
|
582 |
|
|
583 |
return ret;
|
|
584 |
}
|
|
585 |
|
|
586 |
static gboolean
|
|
587 |
gst_xing_mux_sink_event (GstPad * pad, GstEvent * event)
|
|
588 |
{
|
|
589 |
GstXingMux *xing;
|
|
590 |
gboolean result;
|
|
591 |
|
|
592 |
xing = GST_XING_MUX (gst_pad_get_parent (pad));
|
|
593 |
|
|
594 |
switch (GST_EVENT_TYPE (event)) {
|
|
595 |
case GST_EVENT_NEWSEGMENT:
|
|
596 |
if (xing->sent_xing) {
|
|
597 |
GST_ERROR ("Already sent Xing header, dropping NEWSEGMENT event!");
|
|
598 |
gst_event_unref (event);
|
|
599 |
result = FALSE;
|
|
600 |
} else {
|
|
601 |
GstFormat fmt;
|
|
602 |
|
|
603 |
gst_event_parse_new_segment (event, NULL, NULL, &fmt, NULL, NULL, NULL);
|
|
604 |
|
|
605 |
if (fmt == GST_FORMAT_BYTES) {
|
|
606 |
result = gst_pad_push_event (xing->srcpad, event);
|
|
607 |
} else {
|
|
608 |
gst_event_unref (event);
|
|
609 |
|
|
610 |
event = gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_BYTES,
|
|
611 |
0, GST_CLOCK_TIME_NONE, 0);
|
|
612 |
|
|
613 |
result = gst_pad_push_event (xing->srcpad, event);
|
|
614 |
}
|
|
615 |
}
|
|
616 |
break;
|
|
617 |
|
|
618 |
case GST_EVENT_EOS:{
|
|
619 |
GstEvent *n_event;
|
|
620 |
|
|
621 |
GST_DEBUG_OBJECT (xing, "handling EOS event");
|
|
622 |
|
|
623 |
if (xing->sent_xing) {
|
|
624 |
|
|
625 |
n_event = gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_BYTES,
|
|
626 |
0, GST_CLOCK_TIME_NONE, 0);
|
|
627 |
|
|
628 |
if (G_UNLIKELY (!gst_pad_push_event (xing->srcpad, n_event))) {
|
|
629 |
GST_WARNING
|
|
630 |
("Failed to seek to position 0 for pushing the Xing header");
|
|
631 |
} else {
|
|
632 |
GstBuffer *header;
|
|
633 |
GstFlowReturn ret;
|
|
634 |
|
|
635 |
header = generate_xing_header (xing);
|
|
636 |
|
|
637 |
if (header == NULL) {
|
|
638 |
GST_ERROR ("Can't generate Xing header");
|
|
639 |
} else {
|
|
640 |
|
|
641 |
GST_INFO ("Writing real Xing header to beginning of stream");
|
|
642 |
|
|
643 |
if (GST_FLOW_IS_FATAL (ret = gst_pad_push (xing->srcpad, header)))
|
|
644 |
GST_WARNING ("Failed to push updated Xing header: %s\n",
|
|
645 |
gst_flow_get_name (ret));
|
|
646 |
}
|
|
647 |
}
|
|
648 |
}
|
|
649 |
result = gst_pad_push_event (xing->srcpad, event);
|
|
650 |
break;
|
|
651 |
}
|
|
652 |
default:
|
|
653 |
result = gst_pad_event_default (pad, event);
|
|
654 |
break;
|
|
655 |
}
|
|
656 |
gst_object_unref (GST_OBJECT (xing));
|
|
657 |
|
|
658 |
return result;
|
|
659 |
}
|
|
660 |
|
|
661 |
|
|
662 |
static GstStateChangeReturn
|
|
663 |
gst_xing_mux_change_state (GstElement * element, GstStateChange transition)
|
|
664 |
{
|
|
665 |
GstXingMux *xing;
|
|
666 |
GstStateChangeReturn result;
|
|
667 |
|
|
668 |
xing = GST_XING_MUX (element);
|
|
669 |
|
|
670 |
result = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
|
|
671 |
|
|
672 |
switch (transition) {
|
|
673 |
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
|
674 |
xing_reset (xing);
|
|
675 |
break;
|
|
676 |
default:
|
|
677 |
break;
|
|
678 |
}
|
|
679 |
|
|
680 |
return result;
|
|
681 |
}
|