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gst/xingheader/: Major cleanup and rewrite of xingmux with less bugs and new features:
Original commit message from CVS: * gst/xingheader/Makefile.am: * gst/xingheader/gstxingmux.c: (parse_header), (get_xing_offset), (has_xing_header), (generate_xing_header), (gst_xing_mux_base_init), (gst_xing_mux_finalize), (xing_reset), (gst_xing_mux_init), (gst_xing_mux_chain), (gst_xing_mux_sink_event), (gst_xing_mux_change_state): * gst/xingheader/gstxingmux.h: Major cleanup and rewrite of xingmux with less bugs and new features: - Handles other layers as 3 - Write TOC
This commit is contained in:
Sebastian Dröge
parent
e2d08f0f03
commit
881b80513e
4 changed files with 432 additions and 204 deletions
13
ChangeLog
13
ChangeLog
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@ -1,3 +1,16 @@
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2008-01-12 Sebastian Dröge <slomo@circular-chaos.org>
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* gst/xingheader/Makefile.am:
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* gst/xingheader/gstxingmux.c: (parse_header), (get_xing_offset),
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(has_xing_header), (generate_xing_header),
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(gst_xing_mux_base_init), (gst_xing_mux_finalize), (xing_reset),
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(gst_xing_mux_init), (gst_xing_mux_chain),
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(gst_xing_mux_sink_event), (gst_xing_mux_change_state):
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* gst/xingheader/gstxingmux.h:
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Major cleanup and rewrite of xingmux with less bugs and new features:
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- Handles other layers as 3
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- Write TOC
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2008-01-11 Tim-Philipp Müller <tim at centricular dot net>
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* tests/check/elements/rganalysis.c: (test_buffer_const_float_mono),
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@ -1,12 +1,9 @@
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plugin_LTLIBRARIES = libgstxingheader.la
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libgstxingheader_la_SOURCES = gstxingmux.c
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libgstxingheader_la_CFLAGS = $(GST_CFLAGS)
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libgstxingheader_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
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libgstxingheader_la_LIBADD = $(GST_LIBS) $(GST_BASE_LIBS)
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noinst_HEADERS = gstxingmux.h
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AM_CFLAGS = $(GST_CFLAGS)
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LIBS = $(GST_LIBS) $(LAME_LIBS)
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@ -1,5 +1,6 @@
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/*
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* (c) 2006 Christophe Fergeau <teuf@gnome.org>
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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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@ -17,6 +18,7 @@
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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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#ifdef HAVE_CONFIG_H
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#include <config.h>
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@ -31,44 +33,23 @@ GST_DEBUG_CATEGORY_STATIC (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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struct _GstXingMuxPriv
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{
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GstClockTime duration;
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guint64 byte_count;
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GList *seek_table;
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gboolean flush;
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};
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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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static const int XING_FRAME_SIZE = 417;
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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 void
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gst_xing_mux_finalize (GObject * obj)
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{
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GstXingMux *xing = GST_XING_MUX (obj);
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g_free (xing->priv);
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xing->priv = NULL;
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G_OBJECT_CLASS (parent_class)->finalize (obj);
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}
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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) 3"));
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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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@ -76,8 +57,270 @@ 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) 3"));
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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 mode, samplerate, bitrate, layer, channels, 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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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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mode = (header >> 6) & 0x3;
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channels = (mode == 3) ? 1 : 2;
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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) & 3;
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guint channel_mode = (header >> 6) & 0x3;
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if (mpeg_version == 0x11) {
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if (channel_mode == 0x11) {
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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 == 0x11) {
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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 || memcmp (data, "Info", 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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guint32 *xing_flags;
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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;
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gulong rate;
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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 */
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/* TODO: Choose smallest possible value */
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header &= 0xffff0fff;
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header |= 0xa << 12; /* 0101b */
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parse_header (header, &size, &spf, &rate);
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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 += get_xing_offset (header);
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memcpy (data, "Xing", 4);
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data += 4;
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xing_flags = (guint32 *) data;
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data += 4;
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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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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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/* 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 |= GST_XING_FRAME_FIELD;
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data += 4;
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}
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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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if (!gst_pad_query_peer_duration (xing->sinkpad, &fmt, &byte_count))
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byte_count = 0;
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if (byte_count == -1)
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byte_count = 0;
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}
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if (byte_count != 0) {
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GST_DEBUG ("Setting number of bytes to %u", byte_count);
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byte_count = GUINT32_TO_BE (byte_count);
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memcpy (data, &byte_count, 4);
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*xing_flags |= GST_XING_BYTES_FIELD;
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data += 4;
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byte_count = GUINT32_FROM_BE (byte_count);
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}
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if (xing->seek_table != NULL && byte_count != 0
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&& duration != GST_CLOCK_TIME_NONE) {
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GList *it;
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gint percent = 0;
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*xing_flags |= GST_XING_TOC_FIELD;
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GST_DEBUG ("Writing seek table");
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for (it = xing->seek_table; it != NULL && percent < 100; it = it->next) {
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GstXingSeekEntry *entry = (GstXingSeekEntry *) it->data;
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gint64 byte;
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if ((entry->timestamp * 100) / duration >= percent) {
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byte = (entry->byte * 256) / byte_count;
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GST_DEBUG (" %d %% -- %d 1/256", percent, byte);
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*data = byte;
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data++;
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percent++;
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}
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}
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}
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GST_DEBUG ("Setting Xing flags to 0x%x\n", *xing_flags);
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*xing_flags = GUINT32_TO_BE (*xing_flags);
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return xing_header;
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}
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static void
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gst_xing_mux_base_init (gpointer g_class)
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@ -90,7 +333,6 @@ gst_xing_mux_base_init (gpointer g_class)
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"Adds a Xing header to the beginning of a VBR MP3 file",
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"Christophe Fergeau <teuf@gnome.org>");
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_xing_mux_src_template));
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gst_element_class_add_pad_template (element_class,
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@ -113,14 +355,35 @@ gst_xing_mux_class_init (GstXingMuxClass * klass)
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}
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static void
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xing_set_flush (GstXingMux * xing, gboolean flush)
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gst_xing_mux_finalize (GObject * obj)
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{
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if (xing->priv == NULL) {
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return;
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GstXingMux *xing = GST_XING_MUX (obj);
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if (xing->adapter) {
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g_object_unref (xing->adapter);
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xing->adapter = NULL;
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}
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xing->priv->flush = flush;
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G_OBJECT_CLASS (parent_class)->finalize (obj);
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}
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static void
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xing_reset (GstXingMux * xing)
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{
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xing->duration = GST_CLOCK_TIME_NONE;
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xing->byte_count = 0;
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gst_adapter_clear (xing->adapter);
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if (xing->seek_table) {
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g_list_foreach (xing->seek_table, (GFunc) g_free, NULL);
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xing->seek_table = NULL;
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}
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xing->sent_xing = FALSE;
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}
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static void
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gst_xing_mux_init (GstXingMux * xing, GstXingMuxClass * xingmux_class)
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{
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@ -144,156 +407,92 @@ gst_xing_mux_init (GstXingMux * xing, GstXingMuxClass * xingmux_class)
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"src"), "src");
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gst_element_add_pad (GST_ELEMENT (xing), xing->srcpad);
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xing->priv = g_malloc0 (sizeof (GstXingMuxPriv));
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xing_set_flush (xing, TRUE);
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xing->priv->duration = GST_CLOCK_TIME_NONE;
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xing->adapter = gst_adapter_new ();
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}
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G_GNUC_UNUSED static void
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xing_update_data (GstXingMux * xing, gint bytes, guint64 duration)
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{
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if (xing->priv == NULL) {
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return;
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}
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xing->priv->byte_count += bytes;
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if (duration == GST_CLOCK_TIME_NONE) {
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return;
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}
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if (xing->priv->duration == GST_CLOCK_TIME_NONE) {
|
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xing->priv->duration = duration;
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} else {
|
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xing->priv->duration += duration;
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}
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}
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static GstBuffer *
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xing_generate_header (GstXingMux * xing)
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{
|
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guint32 xing_flags;
|
||||
GstBuffer *header;
|
||||
guint32 *data;
|
||||
|
||||
/* Dummy header that we will stick at the beginning of our frame
|
||||
*
|
||||
* 0xffe => synchronization bits
|
||||
* 0x1b => 11010b (11b == MPEG1 | 01b == Layer III | 0b == no CRC)
|
||||
* 0x9 => 128kbps
|
||||
* 0x00 => 00b == 44100 Hz | 0b == no padding | 0b == private bit
|
||||
* 0x44 => 0010b 0010b (00b == stereo | 10b == (unused) mode extension)
|
||||
* (0b == no copyright bit | 0b == original bit)
|
||||
* (00b == no emphasis)
|
||||
*
|
||||
* Such a frame (MPEG1 Layer III) contains 1152 samples, its size is thus:
|
||||
* (1152*(128000/8))/44100 = 417.96 rounded to the next smaller integer, i.e.
|
||||
* 417.
|
||||
*
|
||||
* There are also 32 bytes (ie 8 32 bits values) to skip after the header
|
||||
* for such frames
|
||||
*/
|
||||
const guint8 mp3_header[4] = { 0xff, 0xfb, 0x90, 0x44 };
|
||||
const int SIDE_INFO_SIZE = 32 / sizeof (guint32);
|
||||
|
||||
header = gst_buffer_new_and_alloc (XING_FRAME_SIZE);
|
||||
|
||||
data = (guint32 *) GST_BUFFER_DATA (header);
|
||||
memset (data, 0, XING_FRAME_SIZE);
|
||||
memcpy (data, mp3_header, 4);
|
||||
memcpy (&data[8 + 1], "Xing", 4);
|
||||
|
||||
xing_flags = 0;
|
||||
if (xing->priv->duration != GST_CLOCK_TIME_NONE) {
|
||||
guint32 number_of_frames;
|
||||
|
||||
/* The Xing Header contains a NumberOfFrames field, which verifies to:
|
||||
* Duration = NumberOfFrames *SamplesPerFrame/SamplingRate
|
||||
* SamplesPerFrame and SamplingRate are values for the current frame,
|
||||
* ie 1152 and 44100 in our case.
|
||||
*/
|
||||
|
||||
/* FIXME: Better count the actual number of frames as the calculation
|
||||
* below introduces rounding errors
|
||||
*/
|
||||
number_of_frames = gst_util_uint64_scale (xing->priv->duration, 44100,
|
||||
GST_SECOND) / 1152;
|
||||
data[SIDE_INFO_SIZE + 3] = GUINT32_TO_BE (number_of_frames);
|
||||
|
||||
xing_flags |= GST_XING_FRAME_FIELD;
|
||||
}
|
||||
|
||||
if (xing->priv->byte_count != 0) {
|
||||
xing_flags |= GST_XING_BYTES_FIELD;
|
||||
data[SIDE_INFO_SIZE + 4] = GUINT32_TO_BE (xing->priv->byte_count);
|
||||
}
|
||||
|
||||
/* TODO: Un-#ifdef when it's implemented :) xing code in VbrTag.c looks like
|
||||
* it could be stolen
|
||||
*/
|
||||
#if 0
|
||||
if (xing->priv->seek_table != NULL) {
|
||||
GList *it;
|
||||
|
||||
xing_flags |= GST_XING_TOC_FIELD;
|
||||
for (it = xing->priv->seek_table; it != NULL; it = it->next) {
|
||||
/* do something */
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
data[SIDE_INFO_SIZE + 2] = GUINT32_TO_BE (xing_flags);
|
||||
gst_buffer_set_caps (header, GST_PAD_CAPS (xing->srcpad));
|
||||
// gst_util_dump_mem ((guchar *)data, XING_FRAME_SIZE);
|
||||
return header;
|
||||
}
|
||||
|
||||
static gboolean
|
||||
xing_ready_to_flush (GstXingMux * xing)
|
||||
{
|
||||
if (xing->priv == NULL) {
|
||||
return FALSE;
|
||||
}
|
||||
return xing->priv->flush;
|
||||
}
|
||||
|
||||
static void
|
||||
xing_push_header (GstXingMux * xing)
|
||||
{
|
||||
GstBuffer *header;
|
||||
GstEvent *event;
|
||||
|
||||
/* FIXME: should actually be after any ID3v2/APE tags and before the real
|
||||
* MP3 frames.
|
||||
*/
|
||||
event = gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_BYTES,
|
||||
0, GST_CLOCK_TIME_NONE, 0);
|
||||
|
||||
if (G_UNLIKELY (!gst_pad_push_event (xing->srcpad, event))) {
|
||||
GST_WARNING ("Failed to seek to position 0 for pushing the Xing header");
|
||||
return;
|
||||
}
|
||||
|
||||
header = xing_generate_header (xing);
|
||||
xing_set_flush (xing, FALSE);
|
||||
GST_INFO ("Writing real Xing header to beginning of stream");
|
||||
gst_pad_push (xing->srcpad, header);
|
||||
xing_reset (xing);
|
||||
}
|
||||
|
||||
static GstFlowReturn
|
||||
gst_xing_mux_chain (GstPad * pad, GstBuffer * buffer)
|
||||
{
|
||||
GstXingMux *xing = GST_XING_MUX (GST_OBJECT_PARENT (pad));
|
||||
GstXingMux *xing = GST_XING_MUX (GST_PAD_PARENT (pad));
|
||||
GstFlowReturn ret = GST_FLOW_OK;
|
||||
|
||||
xing_update_data (xing, GST_BUFFER_SIZE (buffer),
|
||||
GST_BUFFER_DURATION (buffer));
|
||||
gst_adapter_push (xing->adapter, buffer);
|
||||
|
||||
if (xing_ready_to_flush (xing)) {
|
||||
GST_INFO ("Writing empty Xing header to stream");
|
||||
gst_pad_push (xing->srcpad, xing_generate_header (xing));
|
||||
xing_set_flush (xing, FALSE);
|
||||
while (gst_adapter_available (xing->adapter) >= 4) {
|
||||
const guchar *data = gst_adapter_peek (xing->adapter, 4);
|
||||
guint32 header;
|
||||
GstBuffer *outbuf;
|
||||
GstClockTime duration;
|
||||
guint size, spf;
|
||||
gulong rate;
|
||||
GstXingSeekEntry *seek_entry;
|
||||
|
||||
header = GST_READ_UINT32_BE (data);
|
||||
|
||||
if (!parse_header (header, &size, &spf, &rate)) {
|
||||
GST_DEBUG ("Lost sync, resyncing");
|
||||
gst_adapter_flush (xing->adapter, 1);
|
||||
continue;
|
||||
}
|
||||
|
||||
if (gst_adapter_available (xing->adapter) < size)
|
||||
break;
|
||||
|
||||
outbuf = gst_adapter_take_buffer (xing->adapter, size);
|
||||
gst_buffer_set_caps (outbuf, GST_PAD_CAPS (xing->srcpad));
|
||||
|
||||
if (!xing->sent_xing) {
|
||||
if (has_xing_header (header, GST_BUFFER_DATA (outbuf), size)) {
|
||||
GST_LOG_OBJECT (xing, "Dropping old Xing header");
|
||||
gst_buffer_unref (outbuf);
|
||||
continue;
|
||||
} else {
|
||||
GstBuffer *xing_header;
|
||||
guint64 xing_header_size;
|
||||
|
||||
xing->first_header = header;
|
||||
|
||||
xing_header = generate_xing_header (xing);
|
||||
xing_header_size = GST_BUFFER_SIZE (xing_header);
|
||||
|
||||
if (GST_FLOW_IS_FATAL (ret = gst_pad_push (xing->srcpad, xing_header))) {
|
||||
GST_ERROR_OBJECT (xing, "Failed to push Xing header: %s",
|
||||
gst_flow_get_name (ret));
|
||||
gst_buffer_unref (xing_header);
|
||||
gst_buffer_unref (outbuf);
|
||||
return ret;
|
||||
}
|
||||
|
||||
xing->byte_count += xing_header_size;
|
||||
xing->sent_xing = TRUE;
|
||||
}
|
||||
}
|
||||
|
||||
seek_entry = g_new (GstXingSeekEntry, 1);
|
||||
seek_entry->timestamp =
|
||||
(xing->duration == GST_CLOCK_TIME_NONE) ? 0 : xing->duration;
|
||||
/* Workaround for parsers checking that the first seek table entry is 0 */
|
||||
seek_entry->byte = (seek_entry->timestamp == 0) ? 0 : xing->byte_count;
|
||||
xing->seek_table = g_list_append (xing->seek_table, seek_entry);
|
||||
|
||||
xing->byte_count += GST_BUFFER_SIZE (outbuf);
|
||||
|
||||
duration = gst_util_uint64_scale (spf, GST_SECOND, rate);
|
||||
if (xing->duration == GST_CLOCK_TIME_NONE)
|
||||
xing->duration = duration;
|
||||
else
|
||||
xing->duration += duration;
|
||||
|
||||
if (GST_FLOW_IS_FATAL (ret = gst_pad_push (xing->srcpad, outbuf))) {
|
||||
GST_ERROR_OBJECT (xing, "Failed to push MP3 frame: %s",
|
||||
gst_flow_get_name (ret));
|
||||
return ret;
|
||||
}
|
||||
}
|
||||
|
||||
return gst_pad_push (xing->srcpad, buffer);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static gboolean
|
||||
|
|
@ -307,38 +506,45 @@ gst_xing_mux_sink_event (GstPad * pad, GstEvent * event)
|
|||
|
||||
switch (GST_EVENT_TYPE (event)) {
|
||||
case GST_EVENT_NEWSEGMENT:
|
||||
{
|
||||
gboolean update;
|
||||
gdouble rate;
|
||||
GstFormat format;
|
||||
gint64 value, end_value, base;
|
||||
if (xing->sent_xing) {
|
||||
GST_ERROR ("Already sent Xing header, dropping NEWSEGMENT event!");
|
||||
|
||||
gst_event_parse_new_segment (event, &update, &rate, &format,
|
||||
&value, &end_value, &base);
|
||||
gst_event_unref (event);
|
||||
if (format == GST_FORMAT_BYTES && gst_pad_is_linked (xing->srcpad)) {
|
||||
GstEvent *new_event;
|
||||
|
||||
GST_INFO ("Adjusting NEW_SEGMENT event by %d", XING_FRAME_SIZE);
|
||||
value += XING_FRAME_SIZE;
|
||||
if (end_value != -1) {
|
||||
end_value += XING_FRAME_SIZE;
|
||||
}
|
||||
|
||||
new_event = gst_event_new_new_segment (update, rate, format,
|
||||
value, end_value, base);
|
||||
result = gst_pad_push_event (xing->srcpad, new_event);
|
||||
} else {
|
||||
gst_event_unref (event);
|
||||
result = FALSE;
|
||||
} else {
|
||||
result = gst_pad_push_event (xing->srcpad, event);
|
||||
}
|
||||
}
|
||||
break;
|
||||
|
||||
case GST_EVENT_EOS:
|
||||
case GST_EVENT_EOS:{
|
||||
GstEvent *n_event;
|
||||
|
||||
GST_DEBUG_OBJECT (xing, "handling EOS event");
|
||||
xing_push_header (xing);
|
||||
|
||||
if (xing->sent_xing) {
|
||||
|
||||
n_event = gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_BYTES,
|
||||
0, GST_CLOCK_TIME_NONE, 0);
|
||||
|
||||
if (G_UNLIKELY (!gst_pad_push_event (xing->srcpad, n_event))) {
|
||||
GST_WARNING
|
||||
("Failed to seek to position 0 for pushing the Xing header");
|
||||
} else {
|
||||
GstBuffer *header;
|
||||
GstFlowReturn ret;
|
||||
|
||||
header = generate_xing_header (xing);
|
||||
|
||||
GST_INFO ("Writing real Xing header to beginning of stream");
|
||||
|
||||
if (GST_FLOW_IS_FATAL (ret = gst_pad_push (xing->srcpad, header)))
|
||||
GST_WARNING ("Failed to push updated Xing header: %s\n",
|
||||
gst_flow_get_name (ret));
|
||||
}
|
||||
}
|
||||
result = gst_pad_push_event (xing->srcpad, event);
|
||||
break;
|
||||
}
|
||||
default:
|
||||
result = gst_pad_event_default (pad, event);
|
||||
break;
|
||||
|
|
@ -361,8 +567,7 @@ gst_xing_mux_change_state (GstElement * element, GstStateChange transition)
|
|||
|
||||
switch (transition) {
|
||||
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
||||
memset (xing->priv, 0, sizeof (GstXingMuxPriv));
|
||||
xing_set_flush (xing, TRUE);
|
||||
xing_reset (xing);
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
|
|
|
|||
|
|
@ -1,5 +1,6 @@
|
|||
/*
|
||||
* (c) 2006 Christophe Fergeau <teuf@gnome.org>
|
||||
* Copyright (c) 2006 Christophe Fergeau <teuf@gnome.org>
|
||||
* Copyright (c) 2008 Sebastian Dröge <slomo@circular-chaos.org>
|
||||
*
|
||||
* This library is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU Library General Public
|
||||
|
|
@ -18,17 +19,29 @@
|
|||
*/
|
||||
|
||||
#include <gst/gst.h>
|
||||
#include <gst/base/gstadapter.h>
|
||||
|
||||
typedef struct _GstXingMuxPriv GstXingMuxPriv;
|
||||
typedef struct _GstXingSeekEntry
|
||||
{
|
||||
gint64 timestamp;
|
||||
gint byte;
|
||||
} GstXingSeekEntry;
|
||||
|
||||
/* Definition of structure storing data for this element. */
|
||||
typedef struct _GstXingMux {
|
||||
GstElement element;
|
||||
|
||||
GstPad *sinkpad, *srcpad;
|
||||
|
||||
GstXingMuxPriv *priv;
|
||||
|
||||
GstAdapter *adapter;
|
||||
GstClockTime duration;
|
||||
guint64 byte_count;
|
||||
guint64 frame_count;
|
||||
GList *seek_table;
|
||||
gboolean sent_xing;
|
||||
|
||||
/* Copy of the first frame header */
|
||||
guint32 first_header;
|
||||
} GstXingMux;
|
||||
|
||||
/* Standard definition defining a class for this element. */
|
||||
|
|
|
|||
Loading…
Reference in a new issue