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[MOVED FROM BAD 22/57] gst/flv/: Add first version of a FLV muxer. The only missing feature is writing of stream metadata.
Original commit message from CVS: * gst/flv/Makefile.am: * gst/flv/gstflvdemux.c: (plugin_init): * gst/flv/gstflvmux.c: (gst_flv_mux_base_init), (gst_flv_mux_class_init), (gst_flv_mux_init), (gst_flv_mux_finalize), (gst_flv_mux_reset), (gst_flv_mux_handle_src_event), (gst_flv_mux_handle_sink_event), (gst_flv_mux_video_pad_setcaps), (gst_flv_mux_audio_pad_setcaps), (gst_flv_mux_request_new_pad), (gst_flv_mux_release_pad), (gst_flv_mux_write_header), (gst_flv_mux_write_buffer), (gst_flv_mux_collected), (gst_flv_mux_change_state): * gst/flv/gstflvmux.h: Add first version of a FLV muxer. The only missing feature is writing of stream metadata.
This commit is contained in:
Sebastian Dröge
Sebastian Dröge
parent
f58f138c55
commit
fc2adbb9a8
4 changed files with 849 additions and 9 deletions
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@ -1,9 +1,8 @@
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plugin_LTLIBRARIES = libgstflv.la
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plugin_LTLIBRARIES = libgstflvdemux.la
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libgstflv_la_CFLAGS = ${GST_CFLAGS}
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libgstflv_la_LIBADD = $(GST_BASE_LIBS)
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libgstflv_la_LDFLAGS = ${GST_PLUGIN_LDFLAGS}
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libgstflv_la_SOURCES = gstflvdemux.c gstflvparse.c gstflvmux.c
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libgstflvdemux_la_CFLAGS = ${GST_CFLAGS}
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libgstflvdemux_la_LIBADD = $(GST_BASE_LIBS)
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libgstflvdemux_la_LDFLAGS = ${GST_PLUGIN_LDFLAGS}
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libgstflvdemux_la_SOURCES = gstflvdemux.c gstflvparse.c
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noinst_HEADERS = gstflvdemux.h gstflvparse.h
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noinst_HEADERS = gstflvdemux.h gstflvparse.h gstflvmux.h
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@ -23,6 +23,7 @@
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#include "gstflvdemux.h"
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#include "gstflvparse.h"
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#include "gstflvmux.h"
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#include <string.h>
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@ -1207,12 +1208,14 @@ plugin_init (GstPlugin * plugin)
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GST_DEBUG_CATEGORY_INIT (flvdemux_debug, "flvdemux", 0, "FLV demuxer");
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if (!gst_element_register (plugin, "flvdemux", GST_RANK_PRIMARY,
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gst_flv_demux_get_type ()))
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gst_flv_demux_get_type ()) ||
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!gst_element_register (plugin, "flvmux", GST_RANK_NONE,
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gst_flv_mux_get_type ()))
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return FALSE;
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return TRUE;
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}
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GST_PLUGIN_DEFINE (GST_VERSION_MAJOR, GST_VERSION_MINOR,
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"flvdemux", "Element demuxing FLV stream",
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"flv", "FLV muxing and demuxing plugin",
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plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)
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754
gst/flv/gstflvmux.c
Normal file
754
gst/flv/gstflvmux.c
Normal file
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@ -0,0 +1,754 @@
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/* GStreamer
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*
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* Copyright (c) 2008 Sebastian Dröge <sebastian.droege@collabora.co.uk>
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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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/* TODO:
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* - Write metadata for the file, see FLV spec page 13
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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 <math.h>
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#include <string.h>
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#include "gstflvmux.h"
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GST_DEBUG_CATEGORY_STATIC (flvmux_debug);
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#define GST_CAT_DEFAULT flvmux_debug
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static GstStaticPadTemplate src_templ = 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 ("video/x-flv")
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);
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static GstStaticPadTemplate videosink_templ = GST_STATIC_PAD_TEMPLATE ("video",
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GST_PAD_SINK,
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GST_PAD_REQUEST,
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GST_STATIC_CAPS ("video/x-flash-video; "
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"video/x-flash-screen; "
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"video/x-vp6-flash; " "video/x-vp6-alpha; " "video/x-h264;")
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);
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static GstStaticPadTemplate audiosink_templ = GST_STATIC_PAD_TEMPLATE ("audio",
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GST_PAD_SINK,
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GST_PAD_REQUEST,
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GST_STATIC_CAPS
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("audio/x-adpcm, layout = (string) swf, channels = (int) { 1, 2 }, rate = (int) { 5512, 11025, 22050, 44100 }; "
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"audio/mpeg, mpegversion = (int) 1, layer = (int) 3, channels = (int) { 1, 2 }, rate = (int) { 5512, 8000, 11025, 22050, 44100 }; "
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"audio/mpeg, mpegversion = (int) 4; "
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"audio/x-nellymoser, channels = (int) { 1, 2 }, rate = (int) { 5512, 8000, 11025, 16000, 22050, 44100 }; "
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"audio/x-raw-int, endianness = (int) LITTLE_ENDIAN, channels = (int) { 1, 2 }, width = (int) 8, depth = (int) 8, rate = (int) { 5512, 11025, 22050, 44100 }, signed = (boolean) FALSE; "
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"audio/x-raw-int, endianness = (int) LITTLE_ENDIAN, channels = (int) { 1, 2 }, width = (int) 16, depth = (int) 16, rate = (int) { 5512, 11025, 22050, 44100 }, signed = (boolean) TRUE; "
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"audio/x-alaw, channels = (int) { 1, 2 }, rate = (int) { 5512, 11025, 22050, 44100 }; "
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"audio/x-mulaw, channels = (int) { 1, 2 }, rate = (int) { 5512, 11025, 22050, 44100 };")
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);
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GST_BOILERPLATE (GstFlvMux, gst_flv_mux, GstElement, GST_TYPE_ELEMENT);
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static void gst_flv_mux_finalize (GObject * object);
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static GstFlowReturn
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gst_flv_mux_collected (GstCollectPads * pads, gpointer user_data);
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static gboolean gst_flv_mux_handle_src_event (GstPad * pad, GstEvent * event);
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static GstPad *gst_flv_mux_request_new_pad (GstElement * element,
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GstPadTemplate * templ, const gchar * name);
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static void gst_flv_mux_release_pad (GstElement * element, GstPad * pad);
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static GstStateChangeReturn
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gst_flv_mux_change_state (GstElement * element, GstStateChange transition);
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static void gst_flv_mux_reset (GstElement * element);
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static void
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gst_flv_mux_base_init (gpointer g_class)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&videosink_templ));
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&audiosink_templ));
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&src_templ));
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gst_element_class_set_details_simple (element_class, "FLV muxer",
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"Codec/Muxer",
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"Muxes video/audio streams into a FLV stream",
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"Sebastian Dröge <sebastian.droege@collabora.co.uk>");
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GST_DEBUG_CATEGORY_INIT (flvmux_debug, "flvmux", 0, "FLV muxer");
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}
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static void
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gst_flv_mux_class_init (GstFlvMuxClass * klass)
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{
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GObjectClass *gobject_class;
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GstElementClass *gstelement_class;
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GST_DEBUG_CATEGORY_INIT (flvmux_debug, "flvmux", 0, "FLV muxer");
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gobject_class = (GObjectClass *) klass;
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gstelement_class = (GstElementClass *) klass;
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gobject_class->finalize = gst_flv_mux_finalize;
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gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_flv_mux_change_state);
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gstelement_class->request_new_pad =
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GST_DEBUG_FUNCPTR (gst_flv_mux_request_new_pad);
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gstelement_class->release_pad = GST_DEBUG_FUNCPTR (gst_flv_mux_release_pad);
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}
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static void
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gst_flv_mux_init (GstFlvMux * mux, GstFlvMuxClass * g_class)
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{
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mux->srcpad = gst_pad_new_from_static_template (&src_templ, "src");
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gst_pad_set_event_function (mux->srcpad, gst_flv_mux_handle_src_event);
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gst_element_add_pad (GST_ELEMENT (mux), mux->srcpad);
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mux->collect = gst_collect_pads_new ();
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gst_collect_pads_set_function (mux->collect,
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(GstCollectPadsFunction) GST_DEBUG_FUNCPTR (gst_flv_mux_collected), mux);
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gst_flv_mux_reset (GST_ELEMENT (mux));
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}
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static void
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gst_flv_mux_finalize (GObject * object)
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{
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GstFlvMux *mux = GST_FLV_MUX (object);
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gst_object_unref (mux->collect);
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static void
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gst_flv_mux_reset (GstElement * element)
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{
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GstFlvMux *mux = GST_FLV_MUX (element);
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GSList *sl;
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while ((sl = mux->collect->data) != NULL) {
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GstFlvPad *cpad = (GstFlvPad *) sl->data;
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if (cpad->audio_codec_data)
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gst_buffer_unref (cpad->audio_codec_data);
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if (cpad->video_codec_data)
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gst_buffer_unref (cpad->video_codec_data);
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gst_collect_pads_remove_pad (mux->collect, cpad->collect.pad);
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}
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mux->state = GST_FLV_MUX_STATE_HEADER;
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}
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static gboolean
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gst_flv_mux_handle_src_event (GstPad * pad, GstEvent * event)
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{
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GstEventType type;
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type = event ? GST_EVENT_TYPE (event) : GST_EVENT_UNKNOWN;
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switch (type) {
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case GST_EVENT_SEEK:
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/* disable seeking for now */
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return FALSE;
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default:
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break;
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}
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return gst_pad_event_default (pad, event);
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}
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static gboolean
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gst_flv_mux_handle_sink_event (GstPad * pad, GstEvent * event)
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{
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GstFlvMux *mux = GST_FLV_MUX (gst_pad_get_parent (pad));
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gboolean ret = TRUE;
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switch (GST_EVENT_TYPE (event)) {
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case GST_EVENT_TAG:
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/* TODO do something with the tags */
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break;
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case GST_EVENT_NEWSEGMENT:
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/* We don't support NEWSEGMENT events */
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ret = FALSE;
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gst_event_unref (event);
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break;
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default:
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break;
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}
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/* now GstCollectPads can take care of the rest, e.g. EOS */
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if (ret)
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ret = mux->collect_event (pad, event);
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gst_object_unref (mux);
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return ret;
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}
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static gboolean
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gst_flv_mux_video_pad_setcaps (GstPad * pad, GstCaps * caps)
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{
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GstFlvMux *mux = GST_FLV_MUX (gst_pad_get_parent (pad));
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GstFlvPad *cpad = (GstFlvPad *) gst_pad_get_element_private (pad);
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gboolean ret = TRUE;
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GstStructure *s;
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s = gst_caps_get_structure (caps, 0);
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if (strcmp (gst_structure_get_name (s), "video/x-flash-video") == 0) {
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cpad->video_codec = 2;
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} else if (strcmp (gst_structure_get_name (s), "video/x-flash-screen") == 0) {
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cpad->video_codec = 3;
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} else if (strcmp (gst_structure_get_name (s), "video/x-vp6-flash") == 0) {
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cpad->video_codec = 4;
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} else if (strcmp (gst_structure_get_name (s), "video/x-vp6-alpha") == 0) {
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cpad->video_codec = 5;
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} else if (strcmp (gst_structure_get_name (s), "video/x-h264") == 0) {
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cpad->video_codec = 7;
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} else {
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ret = FALSE;
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}
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if (ret && gst_structure_has_field (s, "codec_data")) {
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const GValue *val = gst_structure_get_value (s, "codec_data");
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if (val) {
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cpad->video_codec_data = gst_buffer_ref (gst_value_get_buffer (val));
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cpad->sent_codec_data = FALSE;
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} else {
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cpad->sent_codec_data = TRUE;
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}
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} else {
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cpad->sent_codec_data = TRUE;
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}
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gst_object_unref (mux);
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return ret;
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}
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static gboolean
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gst_flv_mux_audio_pad_setcaps (GstPad * pad, GstCaps * caps)
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{
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GstFlvMux *mux = GST_FLV_MUX (gst_pad_get_parent (pad));
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GstFlvPad *cpad = (GstFlvPad *) gst_pad_get_element_private (pad);
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gboolean ret = TRUE;
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GstStructure *s;
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s = gst_caps_get_structure (caps, 0);
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if (strcmp (gst_structure_get_name (s), "audio/x-adpcm") == 0) {
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const gchar *layout = gst_structure_get_string (s, "layout");
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if (layout && strcmp (layout, "swf") == 0) {
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cpad->audio_codec = 1;
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} else {
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ret = FALSE;
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}
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} else if (strcmp (gst_structure_get_name (s), "audio/mpeg") == 0) {
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gint mpegversion;
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if (gst_structure_get_int (s, "mpegversion", &mpegversion)) {
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if (mpegversion == 1) {
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gint layer;
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if (gst_structure_get_int (s, "layer", &layer) && layer == 3) {
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gint rate;
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if (gst_structure_get_int (s, "rate", &rate) && rate == 8000)
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cpad->audio_codec = 14;
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else
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cpad->audio_codec = 2;
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} else {
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ret = FALSE;
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}
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} else if (mpegversion == 4) {
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cpad->audio_codec = 10;
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} else {
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ret = FALSE;
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}
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} else {
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ret = FALSE;
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}
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} else if (strcmp (gst_structure_get_name (s), "audio/x-nellymoser") == 0) {
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gint rate, channels;
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if (gst_structure_get_int (s, "rate", &rate)
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&& gst_structure_get_int (s, "channels", &channels)) {
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if (channels == 1 && rate == 16000)
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cpad->audio_codec = 4;
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else if (channels == 1 && rate == 8000)
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cpad->audio_codec = 5;
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} else {
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cpad->audio_codec = 6;
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}
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} else if (strcmp (gst_structure_get_name (s), "audio/x-raw-int") == 0) {
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gint endianness;
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if (gst_structure_get_int (s, "endianness", &endianness)
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&& endianness == G_LITTLE_ENDIAN)
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cpad->audio_codec = 3;
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else
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ret = FALSE;
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} else if (strcmp (gst_structure_get_name (s), "audio/x-alaw") == 0) {
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cpad->video_codec = 7;
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} else if (strcmp (gst_structure_get_name (s), "audio/x-mulaw") == 0) {
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cpad->video_codec = 8;
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} else {
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ret = FALSE;
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}
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if (ret) {
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gint rate, channels, width;
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if (gst_structure_get_int (s, "rate", &rate)) {
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if (cpad->audio_codec == 10)
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cpad->rate = 3;
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else if (rate == 5512)
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cpad->rate = 0;
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else if (rate == 11025)
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cpad->rate = 1;
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else if (rate == 22050)
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cpad->rate = 2;
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else if (rate == 44100)
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cpad->rate = 3;
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else if (rate == 8000 && (cpad->audio_codec == 5
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|| cpad->audio_codec == 14))
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cpad->rate = 0;
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else if (rate == 16000 && cpad->audio_codec == 4)
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cpad->rate = 0;
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else
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ret = FALSE;
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} else if (cpad->audio_codec == 10) {
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cpad->rate = 3;
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} else {
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ret = FALSE;
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}
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if (gst_structure_get_int (s, "channels", &channels)) {
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if (cpad->audio_codec == 4 || cpad->audio_codec == 5
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|| cpad->audio_codec == 6)
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cpad->channels = 0;
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||||
else if (cpad->audio_codec == 10)
|
||||
cpad->channels = 1;
|
||||
else if (channels == 1)
|
||||
cpad->channels = 0;
|
||||
else if (channels == 2)
|
||||
cpad->channels = 1;
|
||||
else
|
||||
ret = FALSE;
|
||||
} else if (cpad->audio_codec == 4 || cpad->audio_codec == 5
|
||||
|| cpad->audio_codec == 6) {
|
||||
cpad->channels = 0;
|
||||
} else if (cpad->audio_codec == 10) {
|
||||
cpad->channels = 1;
|
||||
} else {
|
||||
ret = FALSE;
|
||||
}
|
||||
|
||||
if (gst_structure_get_int (s, "width", &width)) {
|
||||
if (cpad->audio_codec != 3)
|
||||
cpad->width = 1;
|
||||
else if (width == 8)
|
||||
cpad->width = 0;
|
||||
else if (width == 16)
|
||||
cpad->width = 1;
|
||||
else
|
||||
ret = FALSE;
|
||||
} else if (cpad->audio_codec != 3) {
|
||||
cpad->width = 1;
|
||||
} else {
|
||||
ret = FALSE;
|
||||
}
|
||||
}
|
||||
|
||||
if (ret && gst_structure_has_field (s, "codec_data")) {
|
||||
const GValue *val = gst_structure_get_value (s, "codec_data");
|
||||
|
||||
if (val) {
|
||||
cpad->audio_codec_data = gst_buffer_ref (gst_value_get_buffer (val));
|
||||
cpad->sent_codec_data = FALSE;
|
||||
} else {
|
||||
cpad->sent_codec_data = TRUE;
|
||||
}
|
||||
} else {
|
||||
cpad->sent_codec_data = TRUE;
|
||||
}
|
||||
|
||||
gst_object_unref (mux);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static GstPad *
|
||||
gst_flv_mux_request_new_pad (GstElement * element,
|
||||
GstPadTemplate * templ, const gchar * pad_name)
|
||||
{
|
||||
GstElementClass *klass = GST_ELEMENT_GET_CLASS (element);
|
||||
GstFlvMux *mux = GST_FLV_MUX (element);
|
||||
GstFlvPad *cpad;
|
||||
GstPad *pad = NULL;
|
||||
const gchar *name = NULL;
|
||||
GstPadSetCapsFunction setcapsfunc = NULL;
|
||||
gboolean video;
|
||||
|
||||
if (mux->state != GST_FLV_MUX_STATE_HEADER) {
|
||||
GST_WARNING_OBJECT (mux, "Can't request pads after writing header");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
if (templ == gst_element_class_get_pad_template (klass, "audio")) {
|
||||
if (mux->have_audio) {
|
||||
GST_WARNING_OBJECT (mux, "Already have an audio pad");
|
||||
return NULL;
|
||||
}
|
||||
mux->have_audio = TRUE;
|
||||
name = "audio";
|
||||
video = FALSE;
|
||||
setcapsfunc = GST_DEBUG_FUNCPTR (gst_flv_mux_audio_pad_setcaps);
|
||||
} else if (templ == gst_element_class_get_pad_template (klass, "video")) {
|
||||
if (mux->have_video) {
|
||||
GST_WARNING_OBJECT (mux, "Already have a video pad");
|
||||
return NULL;
|
||||
}
|
||||
mux->have_video = TRUE;
|
||||
name = "video";
|
||||
video = TRUE;
|
||||
setcapsfunc = GST_DEBUG_FUNCPTR (gst_flv_mux_video_pad_setcaps);
|
||||
} else {
|
||||
GST_WARNING_OBJECT (mux, "Invalid template");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
pad = gst_pad_new_from_template (templ, name);
|
||||
cpad = (GstFlvPad *)
|
||||
gst_collect_pads_add_pad (mux->collect, pad, sizeof (GstFlvPad));
|
||||
|
||||
cpad->video = video;
|
||||
|
||||
cpad->audio_codec = G_MAXUINT;
|
||||
cpad->rate = G_MAXUINT;
|
||||
cpad->width = G_MAXUINT;
|
||||
cpad->channels = G_MAXUINT;
|
||||
cpad->audio_codec_data = NULL;
|
||||
|
||||
cpad->video_codec = G_MAXUINT;
|
||||
cpad->video_codec_data = NULL;
|
||||
|
||||
cpad->sent_codec_data = FALSE;
|
||||
|
||||
/* FIXME: hacked way to override/extend the event function of
|
||||
* GstCollectPads; because it sets its own event function giving the
|
||||
* element no access to events.
|
||||
*/
|
||||
mux->collect_event = (GstPadEventFunction) GST_PAD_EVENTFUNC (pad);
|
||||
gst_pad_set_event_function (pad,
|
||||
GST_DEBUG_FUNCPTR (gst_flv_mux_handle_sink_event));
|
||||
|
||||
gst_pad_set_setcaps_function (pad, setcapsfunc);
|
||||
gst_pad_set_active (pad, TRUE);
|
||||
gst_element_add_pad (element, pad);
|
||||
|
||||
return pad;
|
||||
}
|
||||
|
||||
static void
|
||||
gst_flv_mux_release_pad (GstElement * element, GstPad * pad)
|
||||
{
|
||||
GstFlvMux *mux = GST_FLV_MUX (GST_PAD_PARENT (pad));
|
||||
GstFlvPad *cpad = (GstFlvPad *) gst_pad_get_element_private (pad);
|
||||
|
||||
if (cpad && cpad->audio_codec_data)
|
||||
gst_buffer_unref (cpad->audio_codec_data);
|
||||
if (cpad && cpad->video_codec_data)
|
||||
gst_buffer_unref (cpad->video_codec_data);
|
||||
|
||||
gst_collect_pads_remove_pad (mux->collect, pad);
|
||||
gst_element_remove_pad (element, pad);
|
||||
}
|
||||
|
||||
static GstFlowReturn
|
||||
gst_flv_mux_write_header (GstFlvMux * mux)
|
||||
{
|
||||
GstBuffer *header = gst_buffer_new_and_alloc (9 + 4);
|
||||
guint8 *data = GST_BUFFER_DATA (header);
|
||||
|
||||
if (GST_PAD_CAPS (mux->srcpad) == NULL) {
|
||||
GstCaps *caps = gst_caps_new_simple ("video/x-flv", NULL);
|
||||
|
||||
gst_pad_set_caps (mux->srcpad, caps);
|
||||
gst_caps_unref (caps);
|
||||
}
|
||||
gst_buffer_set_caps (header, GST_PAD_CAPS (mux->srcpad));
|
||||
|
||||
data[0] = 'F';
|
||||
data[1] = 'L';
|
||||
data[2] = 'V';
|
||||
data[3] = 0x01; /* Version */
|
||||
|
||||
data[4] = (mux->have_audio << 2) | mux->have_video; /* flags */
|
||||
GST_WRITE_UINT32_BE (data + 5, 9); /* data offset */
|
||||
|
||||
GST_WRITE_UINT32_BE (data + 9, 0); /* previous tag size */
|
||||
|
||||
return gst_pad_push (mux->srcpad, header);
|
||||
}
|
||||
|
||||
static GstFlowReturn
|
||||
gst_flv_mux_write_buffer (GstFlvMux * mux, GstFlvPad * cpad)
|
||||
{
|
||||
GstBuffer *tag;
|
||||
guint8 *data;
|
||||
guint size;
|
||||
GstBuffer *buffer =
|
||||
gst_collect_pads_pop (mux->collect, (GstCollectData *) cpad);
|
||||
guint32 timestamp = GST_BUFFER_TIMESTAMP (buffer) / GST_MSECOND;
|
||||
gboolean second_run = FALSE;
|
||||
|
||||
next:
|
||||
size = 11;
|
||||
if (cpad->video) {
|
||||
size += 1;
|
||||
if (cpad->video_codec == 7 && !cpad->sent_codec_data)
|
||||
size += 4 + GST_BUFFER_SIZE (cpad->video_codec_data);
|
||||
else if (cpad->video_codec == 7)
|
||||
size += 4 + GST_BUFFER_SIZE (buffer);
|
||||
else
|
||||
size += GST_BUFFER_SIZE (buffer);
|
||||
} else {
|
||||
size += 1;
|
||||
if (cpad->video_codec == 10 && !cpad->sent_codec_data)
|
||||
size += 1 + GST_BUFFER_SIZE (cpad->audio_codec_data);
|
||||
else if (cpad->audio_codec == 10)
|
||||
size += 1 + GST_BUFFER_SIZE (buffer);
|
||||
else
|
||||
size += GST_BUFFER_SIZE (buffer);
|
||||
}
|
||||
size += 4;
|
||||
|
||||
tag = gst_buffer_new_and_alloc (size);
|
||||
data = GST_BUFFER_DATA (tag);
|
||||
memset (data, 0, size);
|
||||
|
||||
data[0] = (cpad->video) ? 9 : 8;
|
||||
|
||||
data[1] = ((size - 11 - 4) >> 16) & 0xff;
|
||||
data[2] = ((size - 11 - 4) >> 8) & 0xff;
|
||||
data[3] = ((size - 11 - 4) >> 0) & 0xff;
|
||||
|
||||
data[4] = (timestamp >> 16) & 0xff;
|
||||
data[5] = (timestamp >> 8) & 0xff;
|
||||
data[6] = (timestamp >> 0) & 0xff;
|
||||
data[7] = (timestamp >> 24) & 0xff;
|
||||
|
||||
data[8] = data[9] = data[10] = 0;
|
||||
|
||||
if (cpad->video) {
|
||||
if (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DELTA_UNIT))
|
||||
data[11] |= 2 << 4;
|
||||
else
|
||||
data[11] |= 1 << 4;
|
||||
|
||||
data[11] |= cpad->video_codec & 0x0f;
|
||||
|
||||
if (cpad->video_codec == 7 && !cpad->sent_codec_data) {
|
||||
data[12] = 0;
|
||||
data[13] = data[14] = data[15] = 0;
|
||||
|
||||
memcpy (data + 11 + 1 + 4, GST_BUFFER_DATA (cpad->video_codec_data),
|
||||
GST_BUFFER_SIZE (cpad->video_codec_data));
|
||||
second_run = TRUE;
|
||||
} else if (cpad->video_codec == 7) {
|
||||
data[12] = 1;
|
||||
|
||||
/* FIXME: what to do about composition time */
|
||||
data[13] = data[14] = data[15] = 0;
|
||||
|
||||
memcpy (data + 11 + 1 + 4, GST_BUFFER_DATA (buffer),
|
||||
GST_BUFFER_SIZE (buffer));
|
||||
} else {
|
||||
memcpy (data + 11 + 1, GST_BUFFER_DATA (buffer),
|
||||
GST_BUFFER_SIZE (buffer));
|
||||
}
|
||||
} else {
|
||||
data[11] |= (cpad->audio_codec << 4) & 0xf0;
|
||||
data[11] |= (cpad->rate << 2) & 0x0c;
|
||||
data[11] |= (cpad->width << 1) & 0x02;
|
||||
data[11] |= (cpad->channels << 0) & 0x01;
|
||||
|
||||
if (cpad->video_codec == 10 && !cpad->sent_codec_data) {
|
||||
data[12] = 0;
|
||||
|
||||
memcpy (data + 11 + 1 + 1, GST_BUFFER_DATA (cpad->audio_codec_data),
|
||||
GST_BUFFER_SIZE (cpad->audio_codec_data));
|
||||
second_run = TRUE;
|
||||
} else if (cpad->audio_codec == 10) {
|
||||
data[12] = 1;
|
||||
|
||||
memcpy (data + 11 + 1 + 1, GST_BUFFER_DATA (buffer),
|
||||
GST_BUFFER_SIZE (buffer));
|
||||
} else {
|
||||
memcpy (data + 11 + 1, GST_BUFFER_DATA (buffer),
|
||||
GST_BUFFER_SIZE (buffer));
|
||||
}
|
||||
}
|
||||
|
||||
GST_WRITE_UINT32_BE (data + size - 4, size - 4);
|
||||
|
||||
gst_buffer_set_caps (tag, GST_PAD_CAPS (mux->srcpad));
|
||||
|
||||
if (second_run) {
|
||||
GstFlowReturn ret;
|
||||
|
||||
second_run = FALSE;
|
||||
cpad->sent_codec_data = TRUE;
|
||||
|
||||
ret = gst_pad_push (mux->srcpad, tag);
|
||||
if (ret != GST_FLOW_OK) {
|
||||
gst_buffer_unref (buffer);
|
||||
return ret;
|
||||
}
|
||||
|
||||
tag = NULL;
|
||||
goto next;
|
||||
}
|
||||
|
||||
gst_buffer_copy_metadata (tag, buffer, GST_BUFFER_COPY_TIMESTAMPS);
|
||||
GST_BUFFER_OFFSET (tag) = GST_BUFFER_OFFSET_END (tag) =
|
||||
GST_BUFFER_OFFSET_NONE;
|
||||
|
||||
gst_buffer_unref (buffer);
|
||||
|
||||
return gst_pad_push (mux->srcpad, tag);
|
||||
}
|
||||
|
||||
static GstFlowReturn
|
||||
gst_flv_mux_collected (GstCollectPads * pads, gpointer user_data)
|
||||
{
|
||||
GstFlvMux *mux = GST_FLV_MUX (user_data);
|
||||
GstFlvPad *best;
|
||||
GstClockTime best_time;
|
||||
GstFlowReturn ret;
|
||||
GSList *sl;
|
||||
gboolean eos = TRUE;
|
||||
|
||||
if (mux->state == GST_FLV_MUX_STATE_HEADER) {
|
||||
if (mux->collect->data == NULL) {
|
||||
GST_ELEMENT_ERROR (mux, STREAM, MUX, (NULL),
|
||||
("No input streams configured"));
|
||||
return GST_FLOW_ERROR;
|
||||
}
|
||||
|
||||
if (gst_pad_push_event (mux->srcpad,
|
||||
gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_BYTES, 0, -1, 0)))
|
||||
ret = gst_flv_mux_write_header (mux);
|
||||
else
|
||||
ret = GST_FLOW_ERROR;
|
||||
|
||||
if (ret != GST_FLOW_OK)
|
||||
return ret;
|
||||
mux->state = GST_FLV_MUX_STATE_DATA;
|
||||
}
|
||||
|
||||
best = NULL;
|
||||
best_time = GST_CLOCK_TIME_NONE;
|
||||
for (sl = mux->collect->data; sl; sl = sl->next) {
|
||||
GstFlvPad *cpad = sl->data;
|
||||
GstBuffer *buffer = gst_collect_pads_peek (pads, (GstCollectData *) cpad);
|
||||
GstClockTime time;
|
||||
|
||||
if (!buffer)
|
||||
continue;
|
||||
|
||||
eos = FALSE;
|
||||
|
||||
time = GST_BUFFER_TIMESTAMP (buffer);
|
||||
gst_buffer_unref (buffer);
|
||||
|
||||
if (!GST_CLOCK_TIME_IS_VALID (time)) {
|
||||
GST_WARNING_OBJECT (pads, "Buffer without valid timestamp, dropping");
|
||||
|
||||
gst_buffer_unref (gst_collect_pads_pop (pads, (GstCollectData *) cpad));
|
||||
continue;
|
||||
}
|
||||
|
||||
|
||||
if (best == NULL || (GST_CLOCK_TIME_IS_VALID (best_time)
|
||||
&& time < best_time)) {
|
||||
best = cpad;
|
||||
best_time = time;
|
||||
}
|
||||
}
|
||||
|
||||
if (GST_CLOCK_TIME_IS_VALID (best_time)
|
||||
&& best_time / GST_MSECOND > G_MAXUINT32) {
|
||||
GST_WARNING_OBJECT (mux, "Timestamp larger than FLV supports - EOS");
|
||||
eos = TRUE;
|
||||
}
|
||||
|
||||
if (!eos && best) {
|
||||
return gst_flv_mux_write_buffer (mux, best);
|
||||
} else if (eos) {
|
||||
gst_pad_push_event (mux->srcpad, gst_event_new_eos ());
|
||||
return GST_FLOW_UNEXPECTED;
|
||||
} else {
|
||||
return GST_FLOW_OK;
|
||||
}
|
||||
}
|
||||
|
||||
static GstStateChangeReturn
|
||||
gst_flv_mux_change_state (GstElement * element, GstStateChange transition)
|
||||
{
|
||||
GstStateChangeReturn ret;
|
||||
GstFlvMux *mux = GST_FLV_MUX (element);
|
||||
|
||||
switch (transition) {
|
||||
case GST_STATE_CHANGE_NULL_TO_READY:
|
||||
break;
|
||||
case GST_STATE_CHANGE_READY_TO_PAUSED:
|
||||
gst_collect_pads_start (mux->collect);
|
||||
break;
|
||||
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
|
||||
break;
|
||||
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
||||
gst_collect_pads_stop (mux->collect);
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
|
||||
|
||||
switch (transition) {
|
||||
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
|
||||
break;
|
||||
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
||||
gst_flv_mux_reset (GST_ELEMENT (mux));
|
||||
break;
|
||||
case GST_STATE_CHANGE_READY_TO_NULL:
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
84
gst/flv/gstflvmux.h
Normal file
84
gst/flv/gstflvmux.h
Normal file
|
|
@ -0,0 +1,84 @@
|
|||
/* GStreamer
|
||||
*
|
||||
* Copyright (c) 2008 Sebastian Dröge <sebastian.droege@collabora.co.uk>
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
|
||||
#ifndef __GST_FLV_MUX_H__
|
||||
#define __GST_FLV_MUX_H__
|
||||
|
||||
#include <gst/gst.h>
|
||||
#include <gst/base/gstcollectpads.h>
|
||||
|
||||
G_BEGIN_DECLS
|
||||
|
||||
#define GST_TYPE_FLV_MUX \
|
||||
(gst_flv_mux_get_type ())
|
||||
#define GST_FLV_MUX(obj) \
|
||||
(G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_FLV_MUX, GstFlvMux))
|
||||
#define GST_FLV_MUX_CLASS(klass) \
|
||||
(G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_FLV_MUX, GstFlvMuxClass))
|
||||
#define GST_IS_FLV_MUX(obj) \
|
||||
(G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_FLV_MUX))
|
||||
#define GST_IS_FLV_MUX_CLASS(klass) \
|
||||
(G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_FLV_MUX))
|
||||
|
||||
typedef struct
|
||||
{
|
||||
GstCollectData collect;
|
||||
|
||||
gboolean video;
|
||||
|
||||
guint audio_codec;
|
||||
guint rate;
|
||||
guint width;
|
||||
guint channels;
|
||||
GstBuffer *audio_codec_data;
|
||||
|
||||
guint video_codec;
|
||||
GstBuffer *video_codec_data;
|
||||
|
||||
gboolean sent_codec_data;
|
||||
} GstFlvPad;
|
||||
|
||||
typedef enum
|
||||
{
|
||||
GST_FLV_MUX_STATE_HEADER,
|
||||
GST_FLV_MUX_STATE_DATA
|
||||
} GstFlvMuxState;
|
||||
|
||||
typedef struct _GstFlvMux {
|
||||
GstElement element;
|
||||
|
||||
GstPad *srcpad;
|
||||
GstCollectPads *collect;
|
||||
GstPadEventFunction collect_event;
|
||||
|
||||
GstFlvMuxState state;
|
||||
gboolean have_audio;
|
||||
gboolean have_video;
|
||||
} GstFlvMux;
|
||||
|
||||
typedef struct _GstFlvMuxClass {
|
||||
GstElementClass parent;
|
||||
} GstFlvMuxClass;
|
||||
|
||||
GType gst_flv_mux_get_type (void);
|
||||
|
||||
G_END_DECLS
|
||||
|
||||
#endif /* __GST_FLV_MUX_H__ */
|
||||
Loading…
Reference in a new issue