| /* |
| * Copyright 2006, 2007, 2008, 2009, 2010 Fluendo S.A. |
| * Authors: Jan Schmidt <jan@fluendo.com> |
| * Kapil Agrawal <kapil@fluendo.com> |
| * Julien Moutte <julien@fluendo.com> |
| * |
| * Copyright (C) 2011 Jan Schmidt <thaytan@noraisin.net> |
| * |
| * This library is licensed under 4 different licenses and you |
| * can choose to use it under the terms of any one of them. The |
| * four licenses are the MPL 1.1, the LGPL, the GPL and the MIT |
| * license. |
| * |
| * MPL: |
| * |
| * The contents of this file are subject to the Mozilla Public License |
| * Version 1.1 (the "License"); you may not use this file except in |
| * compliance with the License. You may obtain a copy of the License at |
| * http://www.mozilla.org/MPL/. |
| * |
| * Software distributed under the License is distributed on an "AS IS" |
| * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the |
| * License for the specific language governing rights and limitations |
| * under the License. |
| * |
| * LGPL: |
| * |
| * 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., 51 Franklin St, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| * |
| * GPL: |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program 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 General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. |
| * |
| * MIT: |
| * |
| * Unless otherwise indicated, Source Code is licensed under MIT license. |
| * See further explanation attached in License Statement (distributed in the file |
| * LICENSE). |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy of |
| * this software and associated documentation files (the "Software"), to deal in |
| * the Software without restriction, including without limitation the rights to |
| * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies |
| * of the Software, and to permit persons to whom the Software is furnished to do |
| * so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in all |
| * copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| * SOFTWARE. |
| * |
| */ |
| |
| #ifdef HAVE_CONFIG_H |
| #include "config.h" |
| #endif |
| #include <stdio.h> |
| #include <string.h> |
| |
| #include <gst/tag/tag.h> |
| #include <gst/video/video.h> |
| #include <gst/mpegts/mpegts.h> |
| |
| #include "mpegtsmux.h" |
| |
| #include "mpegtsmux_aac.h" |
| #include "mpegtsmux_ttxt.h" |
| |
| GST_DEBUG_CATEGORY (mpegtsmux_debug); |
| #define GST_CAT_DEFAULT mpegtsmux_debug |
| |
| enum |
| { |
| ARG_0, |
| ARG_PROG_MAP, |
| ARG_M2TS_MODE, |
| ARG_PAT_INTERVAL, |
| ARG_PMT_INTERVAL, |
| ARG_ALIGNMENT, |
| ARG_SI_INTERVAL |
| }; |
| |
| #define MPEGTSMUX_DEFAULT_ALIGNMENT -1 |
| #define MPEGTSMUX_DEFAULT_M2TS FALSE |
| |
| static GstStaticPadTemplate mpegtsmux_sink_factory = |
| GST_STATIC_PAD_TEMPLATE ("sink_%d", |
| GST_PAD_SINK, |
| GST_PAD_REQUEST, |
| GST_STATIC_CAPS ("video/mpeg, " |
| "parsed = (boolean) TRUE, " |
| "mpegversion = (int) { 1, 2, 4 }, " |
| "systemstream = (boolean) false; " |
| "video/x-dirac;" |
| "video/x-h264,stream-format=(string)byte-stream," |
| "alignment=(string){au, nal}; " |
| "audio/mpeg, " |
| "parsed = (boolean) TRUE, " |
| "mpegversion = (int) { 1, 2 };" |
| "audio/mpeg, " |
| "framed = (boolean) TRUE, " |
| "mpegversion = (int) 4, stream-format = (string) { raw, adts };" |
| "audio/x-lpcm, " |
| "width = (int) { 16, 20, 24 }, " |
| "rate = (int) { 48000, 96000 }, " |
| "channels = (int) [ 1, 8 ], " |
| "dynamic_range = (int) [ 0, 255 ], " |
| "emphasis = (boolean) { FALSE, TRUE }, " |
| "mute = (boolean) { FALSE, TRUE }; " |
| "audio/x-ac3, framed = (boolean) TRUE;" |
| "audio/x-dts, framed = (boolean) TRUE;" |
| "subpicture/x-dvb;" "application/x-teletext")); |
| |
| static GstStaticPadTemplate mpegtsmux_src_factory = |
| GST_STATIC_PAD_TEMPLATE ("src", |
| GST_PAD_SRC, |
| GST_PAD_ALWAYS, |
| GST_STATIC_CAPS ("video/mpegts, " |
| "systemstream = (boolean) true, " "packetsize = (int) { 188, 192} ") |
| ); |
| |
| static void gst_mpegtsmux_set_property (GObject * object, guint prop_id, |
| const GValue * value, GParamSpec * pspec); |
| static void gst_mpegtsmux_get_property (GObject * object, guint prop_id, |
| GValue * value, GParamSpec * pspec); |
| |
| static void mpegtsmux_reset (MpegTsMux * mux, gboolean alloc); |
| static void mpegtsmux_dispose (GObject * object); |
| static void alloc_packet_cb (GstBuffer ** _buf, void *user_data); |
| static gboolean new_packet_cb (GstBuffer * buf, void *user_data, |
| gint64 new_pcr); |
| static void release_buffer_cb (guint8 * data, void *user_data); |
| static GstFlowReturn mpegtsmux_collect_packet (MpegTsMux * mux, |
| GstBuffer * buf); |
| static GstFlowReturn mpegtsmux_push_packets (MpegTsMux * mux, gboolean force); |
| static gboolean new_packet_m2ts (MpegTsMux * mux, GstBuffer * buf, |
| gint64 new_pcr); |
| |
| static void mpegtsmux_prepare_srcpad (MpegTsMux * mux); |
| GstFlowReturn mpegtsmux_clip_inc_running_time (GstCollectPads * pads, |
| GstCollectData * cdata, GstBuffer * buf, GstBuffer ** outbuf, |
| gpointer user_data); |
| static GstFlowReturn mpegtsmux_collected_buffer (GstCollectPads * pads, |
| GstCollectData * data, GstBuffer * buf, MpegTsMux * mux); |
| |
| static gboolean mpegtsmux_sink_event (GstCollectPads * pads, |
| GstCollectData * data, GstEvent * event, gpointer user_data); |
| static GstPad *mpegtsmux_request_new_pad (GstElement * element, |
| GstPadTemplate * templ, const gchar * name, const GstCaps * caps); |
| static void mpegtsmux_release_pad (GstElement * element, GstPad * pad); |
| static GstStateChangeReturn mpegtsmux_change_state (GstElement * element, |
| GstStateChange transition); |
| static gboolean mpegtsmux_send_event (GstElement * element, GstEvent * event); |
| static void mpegtsmux_set_header_on_caps (MpegTsMux * mux); |
| static gboolean mpegtsmux_src_event (GstPad * pad, GstObject * parent, |
| GstEvent * event); |
| |
| #if 0 |
| static void mpegtsmux_set_index (GstElement * element, GstIndex * index); |
| static GstIndex *mpegtsmux_get_index (GstElement * element); |
| |
| static GstFormat pts_format; |
| static GstFormat spn_format; |
| #endif |
| |
| typedef struct |
| { |
| GstMapInfo map_info; |
| GstBuffer *buffer; |
| } StreamData; |
| |
| G_DEFINE_TYPE (MpegTsMux, mpegtsmux, GST_TYPE_ELEMENT) |
| |
| /* Takes over the ref on the buffer */ |
| static StreamData *stream_data_new (GstBuffer * buffer) |
| { |
| StreamData *res = g_new (StreamData, 1); |
| res->buffer = buffer; |
| gst_buffer_map (buffer, &(res->map_info), GST_MAP_READ); |
| |
| return res; |
| } |
| |
| static void |
| stream_data_free (StreamData * data) |
| { |
| if (data) { |
| gst_buffer_unmap (data->buffer, &data->map_info); |
| gst_buffer_unref (data->buffer); |
| g_free (data); |
| } |
| } |
| |
| #define parent_class mpegtsmux_parent_class |
| |
| static void |
| mpegtsmux_class_init (MpegTsMuxClass * klass) |
| { |
| GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass); |
| GObjectClass *gobject_class = G_OBJECT_CLASS (klass); |
| |
| gst_element_class_add_pad_template (gstelement_class, |
| gst_static_pad_template_get (&mpegtsmux_sink_factory)); |
| gst_element_class_add_pad_template (gstelement_class, |
| gst_static_pad_template_get (&mpegtsmux_src_factory)); |
| |
| gst_element_class_set_static_metadata (gstelement_class, |
| "MPEG Transport Stream Muxer", "Codec/Muxer", |
| "Multiplexes media streams into an MPEG Transport Stream", |
| "Fluendo <contact@fluendo.com>"); |
| |
| gobject_class->set_property = GST_DEBUG_FUNCPTR (gst_mpegtsmux_set_property); |
| gobject_class->get_property = GST_DEBUG_FUNCPTR (gst_mpegtsmux_get_property); |
| gobject_class->dispose = mpegtsmux_dispose; |
| |
| gstelement_class->request_new_pad = mpegtsmux_request_new_pad; |
| gstelement_class->release_pad = mpegtsmux_release_pad; |
| gstelement_class->change_state = mpegtsmux_change_state; |
| gstelement_class->send_event = mpegtsmux_send_event; |
| |
| #if 0 |
| gstelement_class->set_index = GST_DEBUG_FUNCPTR (mpegtsmux_set_index); |
| gstelement_class->get_index = GST_DEBUG_FUNCPTR (mpegtsmux_get_index); |
| #endif |
| |
| g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_PROG_MAP, |
| g_param_spec_boxed ("prog-map", "Program map", |
| "A GstStructure specifies the mapping from elementary streams to programs", |
| GST_TYPE_STRUCTURE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); |
| |
| g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_M2TS_MODE, |
| g_param_spec_boolean ("m2ts-mode", "M2TS(192 bytes) Mode", |
| "Set to TRUE to output Blu-Ray disc format with 192 byte packets. " |
| "FALSE for standard TS format with 188 byte packets.", |
| MPEGTSMUX_DEFAULT_M2TS, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); |
| |
| g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_PAT_INTERVAL, |
| g_param_spec_uint ("pat-interval", "PAT interval", |
| "Set the interval (in ticks of the 90kHz clock) for writing out the PAT table", |
| 1, G_MAXUINT, TSMUX_DEFAULT_PAT_INTERVAL, |
| G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); |
| |
| g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_PMT_INTERVAL, |
| g_param_spec_uint ("pmt-interval", "PMT interval", |
| "Set the interval (in ticks of the 90kHz clock) for writing out the PMT table", |
| 1, G_MAXUINT, TSMUX_DEFAULT_PMT_INTERVAL, |
| G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); |
| |
| g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_ALIGNMENT, |
| g_param_spec_int ("alignment", "packet alignment", |
| "Number of packets per buffer (padded with dummy packets on EOS) " |
| "(-1 = auto, 0 = all available packets, 7 for UDP streaming)", |
| -1, G_MAXINT, MPEGTSMUX_DEFAULT_ALIGNMENT, |
| G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); |
| |
| g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_SI_INTERVAL, |
| g_param_spec_uint ("si-interval", "SI interval", |
| "Set the interval (in ticks of the 90kHz clock) for writing out the Service" |
| "Information tables", 1, G_MAXUINT, TSMUX_DEFAULT_SI_INTERVAL, |
| G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); |
| } |
| |
| static void |
| mpegtsmux_init (MpegTsMux * mux) |
| { |
| mux->srcpad = |
| gst_pad_new_from_static_template (&mpegtsmux_src_factory, "src"); |
| gst_pad_use_fixed_caps (mux->srcpad); |
| gst_pad_set_event_function (mux->srcpad, |
| GST_DEBUG_FUNCPTR (mpegtsmux_src_event)); |
| gst_element_add_pad (GST_ELEMENT (mux), mux->srcpad); |
| |
| mux->collect = gst_collect_pads_new (); |
| gst_collect_pads_set_buffer_function (mux->collect, |
| (GstCollectPadsBufferFunction) |
| GST_DEBUG_FUNCPTR (mpegtsmux_collected_buffer), mux); |
| |
| gst_collect_pads_set_event_function (mux->collect, |
| (GstCollectPadsEventFunction) GST_DEBUG_FUNCPTR (mpegtsmux_sink_event), |
| mux); |
| gst_collect_pads_set_clip_function (mux->collect, (GstCollectPadsClipFunction) |
| GST_DEBUG_FUNCPTR (mpegtsmux_clip_inc_running_time), mux); |
| |
| mux->adapter = gst_adapter_new (); |
| mux->out_adapter = gst_adapter_new (); |
| |
| /* properties */ |
| mux->m2ts_mode = MPEGTSMUX_DEFAULT_M2TS; |
| mux->pat_interval = TSMUX_DEFAULT_PAT_INTERVAL; |
| mux->pmt_interval = TSMUX_DEFAULT_PMT_INTERVAL; |
| mux->si_interval = TSMUX_DEFAULT_SI_INTERVAL; |
| mux->prog_map = NULL; |
| mux->alignment = MPEGTSMUX_DEFAULT_ALIGNMENT; |
| |
| /* initial state */ |
| mpegtsmux_reset (mux, TRUE); |
| } |
| |
| static void |
| mpegtsmux_pad_reset (MpegTsPadData * pad_data) |
| { |
| pad_data->pid = 0; |
| pad_data->min_dts = GST_CLOCK_TIME_NONE; |
| pad_data->prog_id = -1; |
| #if 0 |
| pad_data->prog_id = -1; |
| pad_data->element_index_writer_id = -1; |
| #endif |
| |
| if (pad_data->free_func) |
| pad_data->free_func (pad_data->prepare_data); |
| pad_data->prepare_data = NULL; |
| pad_data->prepare_func = NULL; |
| pad_data->free_func = NULL; |
| |
| if (pad_data->codec_data) |
| gst_buffer_replace (&pad_data->codec_data, NULL); |
| |
| /* reference owned elsewhere */ |
| pad_data->stream = NULL; |
| pad_data->prog = NULL; |
| |
| if (pad_data->language) { |
| g_free (pad_data->language); |
| pad_data->language = NULL; |
| } |
| |
| } |
| |
| static void |
| mpegtsmux_reset (MpegTsMux * mux, gboolean alloc) |
| { |
| GSList *walk; |
| |
| mux->first = TRUE; |
| mux->last_flow_ret = GST_FLOW_OK; |
| mux->previous_pcr = -1; |
| mux->pcr_rate_num = mux->pcr_rate_den = 1; |
| mux->last_ts = 0; |
| mux->is_delta = TRUE; |
| |
| mux->streamheader_sent = FALSE; |
| mux->pending_key_unit_ts = GST_CLOCK_TIME_NONE; |
| #if 0 |
| mux->spn_count = 0; |
| |
| if (mux->element_index) { |
| gst_object_unref (mux->element_index); |
| mux->element_index = NULL; |
| } |
| #endif |
| if (mux->adapter) |
| gst_adapter_clear (mux->adapter); |
| if (mux->out_adapter) |
| gst_adapter_clear (mux->out_adapter); |
| |
| if (mux->tsmux) { |
| tsmux_free (mux->tsmux); |
| mux->tsmux = NULL; |
| } |
| |
| memset (mux->programs, 0, sizeof (mux->programs)); |
| |
| if (mux->streamheader) { |
| GstBuffer *buf; |
| GList *sh; |
| |
| sh = mux->streamheader; |
| while (sh) { |
| buf = sh->data; |
| gst_buffer_unref (buf); |
| sh = g_list_next (sh); |
| } |
| g_list_free (mux->streamheader); |
| mux->streamheader = NULL; |
| } |
| gst_event_replace (&mux->force_key_unit_event, NULL); |
| gst_buffer_replace (&mux->out_buffer, NULL); |
| |
| if (mux->collect) { |
| GST_COLLECT_PADS_STREAM_LOCK (mux->collect); |
| for (walk = mux->collect->data; walk != NULL; walk = g_slist_next (walk)) |
| mpegtsmux_pad_reset ((MpegTsPadData *) walk->data); |
| GST_COLLECT_PADS_STREAM_UNLOCK (mux->collect); |
| } |
| |
| if (alloc) { |
| mux->tsmux = tsmux_new (); |
| tsmux_set_write_func (mux->tsmux, new_packet_cb, mux); |
| tsmux_set_alloc_func (mux->tsmux, alloc_packet_cb, mux); |
| } |
| } |
| |
| static void |
| mpegtsmux_dispose (GObject * object) |
| { |
| MpegTsMux *mux = GST_MPEG_TSMUX (object); |
| |
| mpegtsmux_reset (mux, FALSE); |
| |
| if (mux->adapter) { |
| g_object_unref (mux->adapter); |
| mux->adapter = NULL; |
| } |
| if (mux->out_adapter) { |
| g_object_unref (mux->out_adapter); |
| mux->out_adapter = NULL; |
| } |
| if (mux->collect) { |
| gst_object_unref (mux->collect); |
| mux->collect = NULL; |
| } |
| if (mux->prog_map) { |
| gst_structure_free (mux->prog_map); |
| mux->prog_map = NULL; |
| } |
| GST_CALL_PARENT (G_OBJECT_CLASS, dispose, (object)); |
| } |
| |
| static void |
| gst_mpegtsmux_set_property (GObject * object, guint prop_id, |
| const GValue * value, GParamSpec * pspec) |
| { |
| MpegTsMux *mux = GST_MPEG_TSMUX (object); |
| GSList *walk; |
| |
| switch (prop_id) { |
| case ARG_M2TS_MODE: |
| /*set incase if the output stream need to be of 192 bytes */ |
| mux->m2ts_mode = g_value_get_boolean (value); |
| break; |
| case ARG_PROG_MAP: |
| { |
| const GstStructure *s = gst_value_get_structure (value); |
| if (mux->prog_map) { |
| gst_structure_free (mux->prog_map); |
| } |
| if (s) |
| mux->prog_map = gst_structure_copy (s); |
| else |
| mux->prog_map = NULL; |
| break; |
| } |
| case ARG_PAT_INTERVAL: |
| mux->pat_interval = g_value_get_uint (value); |
| if (mux->tsmux) |
| tsmux_set_pat_interval (mux->tsmux, mux->pat_interval); |
| break; |
| case ARG_PMT_INTERVAL: |
| walk = mux->collect->data; |
| mux->pmt_interval = g_value_get_uint (value); |
| |
| while (walk) { |
| MpegTsPadData *ts_data = (MpegTsPadData *) walk->data; |
| |
| tsmux_set_pmt_interval (ts_data->prog, mux->pmt_interval); |
| walk = g_slist_next (walk); |
| } |
| break; |
| case ARG_ALIGNMENT: |
| mux->alignment = g_value_get_int (value); |
| break; |
| case ARG_SI_INTERVAL: |
| mux->si_interval = g_value_get_uint (value); |
| tsmux_set_si_interval (mux->tsmux, mux->si_interval); |
| break; |
| default: |
| G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
| break; |
| } |
| } |
| |
| static void |
| gst_mpegtsmux_get_property (GObject * object, guint prop_id, |
| GValue * value, GParamSpec * pspec) |
| { |
| MpegTsMux *mux = GST_MPEG_TSMUX (object); |
| |
| switch (prop_id) { |
| case ARG_M2TS_MODE: |
| g_value_set_boolean (value, mux->m2ts_mode); |
| break; |
| case ARG_PROG_MAP: |
| gst_value_set_structure (value, mux->prog_map); |
| break; |
| case ARG_PAT_INTERVAL: |
| g_value_set_uint (value, mux->pat_interval); |
| break; |
| case ARG_PMT_INTERVAL: |
| g_value_set_uint (value, mux->pmt_interval); |
| break; |
| case ARG_ALIGNMENT: |
| g_value_set_int (value, mux->alignment); |
| break; |
| case ARG_SI_INTERVAL: |
| g_value_set_uint (value, mux->si_interval); |
| break; |
| default: |
| G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
| break; |
| } |
| } |
| |
| #if 0 |
| static void |
| mpegtsmux_set_index (GstElement * element, GstIndex * index) |
| { |
| MpegTsMux *mux = GST_MPEG_TSMUX (element); |
| |
| GST_OBJECT_LOCK (mux); |
| if (mux->element_index) |
| gst_object_unref (mux->element_index); |
| mux->element_index = index ? gst_object_ref (index) : NULL; |
| GST_OBJECT_UNLOCK (mux); |
| |
| GST_DEBUG_OBJECT (mux, "Set index %" GST_PTR_FORMAT, mux->element_index); |
| } |
| |
| static GstIndex * |
| mpegtsmux_get_index (GstElement * element) |
| { |
| GstIndex *result = NULL; |
| MpegTsMux *mux = GST_MPEG_TSMUX (element); |
| |
| GST_OBJECT_LOCK (mux); |
| if (mux->element_index) |
| result = gst_object_ref (mux->element_index); |
| GST_OBJECT_UNLOCK (mux); |
| |
| GST_DEBUG_OBJECT (mux, "Returning index %" GST_PTR_FORMAT, result); |
| |
| return result; |
| } |
| #endif |
| |
| static void |
| release_buffer_cb (guint8 * data, void *user_data) |
| { |
| stream_data_free (user_data); |
| } |
| |
| static GstFlowReturn |
| mpegtsmux_create_stream (MpegTsMux * mux, MpegTsPadData * ts_data) |
| { |
| GstFlowReturn ret = GST_FLOW_ERROR; |
| GstCaps *caps; |
| GstStructure *s; |
| GstPad *pad; |
| TsMuxStreamType st = TSMUX_ST_RESERVED; |
| const gchar *mt; |
| const GValue *value = NULL; |
| GstBuffer *codec_data = NULL; |
| |
| pad = ts_data->collect.pad; |
| caps = gst_pad_get_current_caps (pad); |
| if (caps == NULL) |
| goto not_negotiated; |
| |
| GST_DEBUG_OBJECT (pad, "Creating stream with PID 0x%04x for caps %" |
| GST_PTR_FORMAT, ts_data->pid, caps); |
| |
| s = gst_caps_get_structure (caps, 0); |
| |
| mt = gst_structure_get_name (s); |
| value = gst_structure_get_value (s, "codec_data"); |
| if (value != NULL) |
| codec_data = gst_value_get_buffer (value); |
| |
| if (strcmp (mt, "video/x-dirac") == 0) { |
| st = TSMUX_ST_VIDEO_DIRAC; |
| } else if (strcmp (mt, "audio/x-ac3") == 0) { |
| st = TSMUX_ST_PS_AUDIO_AC3; |
| } else if (strcmp (mt, "audio/x-dts") == 0) { |
| st = TSMUX_ST_PS_AUDIO_DTS; |
| } else if (strcmp (mt, "audio/x-lpcm") == 0) { |
| st = TSMUX_ST_PS_AUDIO_LPCM; |
| } else if (strcmp (mt, "video/x-h264") == 0) { |
| st = TSMUX_ST_VIDEO_H264; |
| } else if (strcmp (mt, "audio/mpeg") == 0) { |
| gint mpegversion; |
| |
| if (!gst_structure_get_int (s, "mpegversion", &mpegversion)) { |
| GST_ERROR_OBJECT (pad, "caps missing mpegversion"); |
| goto not_negotiated; |
| } |
| |
| switch (mpegversion) { |
| case 1: |
| st = TSMUX_ST_AUDIO_MPEG1; |
| break; |
| case 2: |
| st = TSMUX_ST_AUDIO_MPEG2; |
| break; |
| case 4: |
| { |
| st = TSMUX_ST_AUDIO_AAC; |
| if (codec_data) { /* TODO - Check stream format - codec data should only come with RAW stream */ |
| GST_DEBUG_OBJECT (pad, |
| "we have additional codec data (%" G_GSIZE_FORMAT " bytes)", |
| gst_buffer_get_size (codec_data)); |
| ts_data->codec_data = gst_buffer_ref (codec_data); |
| ts_data->prepare_func = mpegtsmux_prepare_aac; |
| } else { |
| ts_data->codec_data = NULL; |
| } |
| break; |
| } |
| default: |
| GST_WARNING_OBJECT (pad, "unsupported mpegversion %d", mpegversion); |
| goto not_negotiated; |
| } |
| } else if (strcmp (mt, "video/mpeg") == 0) { |
| gint mpegversion; |
| |
| if (!gst_structure_get_int (s, "mpegversion", &mpegversion)) { |
| GST_ERROR_OBJECT (pad, "caps missing mpegversion"); |
| goto not_negotiated; |
| } |
| |
| switch (mpegversion) { |
| case 1: |
| st = TSMUX_ST_VIDEO_MPEG1; |
| break; |
| case 2: |
| st = TSMUX_ST_VIDEO_MPEG2; |
| break; |
| case 4: |
| st = TSMUX_ST_VIDEO_MPEG4; |
| break; |
| default: |
| GST_WARNING_OBJECT (pad, "unsupported mpegversion %d", mpegversion); |
| goto not_negotiated; |
| } |
| } else if (strcmp (mt, "subpicture/x-dvb") == 0) { |
| st = TSMUX_ST_PS_DVB_SUBPICTURE; |
| } else if (strcmp (mt, "application/x-teletext") == 0) { |
| st = TSMUX_ST_PS_TELETEXT; |
| /* needs a particularly sized layout */ |
| ts_data->prepare_func = mpegtsmux_prepare_teletext; |
| } |
| |
| if (st != TSMUX_ST_RESERVED) { |
| ts_data->stream = tsmux_create_stream (mux->tsmux, st, ts_data->pid, |
| ts_data->language); |
| } else { |
| GST_DEBUG_OBJECT (pad, "Failed to determine stream type"); |
| } |
| |
| if (ts_data->stream != NULL) { |
| gst_structure_get_int (s, "rate", &ts_data->stream->audio_sampling); |
| gst_structure_get_int (s, "channels", &ts_data->stream->audio_channels); |
| gst_structure_get_int (s, "bitrate", &ts_data->stream->audio_bitrate); |
| |
| tsmux_stream_set_buffer_release_func (ts_data->stream, release_buffer_cb); |
| tsmux_program_add_stream (ts_data->prog, ts_data->stream); |
| |
| ret = GST_FLOW_OK; |
| } |
| #if 0 |
| GST_OBJECT_LOCK (mux); |
| if (mux->element_index) { |
| gboolean parsed = FALSE; |
| |
| if (ts_data->stream->is_video_stream) { |
| if (gst_structure_get_boolean (s, "parsed", &parsed) && parsed) { |
| if (ts_data->element_index_writer_id == -1) { |
| gst_index_get_writer_id (mux->element_index, GST_OBJECT (mux), |
| &ts_data->element_index_writer_id); |
| GST_DEBUG_OBJECT (mux, "created GstIndex writer_id = %d for stream", |
| ts_data->element_index_writer_id); |
| gst_index_add_format (mux->element_index, |
| ts_data->element_index_writer_id, pts_format); |
| gst_index_add_format (mux->element_index, |
| ts_data->element_index_writer_id, spn_format); |
| } |
| } else { |
| GST_WARNING_OBJECT (pad, "no indexing for (unparsed) stream !"); |
| } |
| } |
| } |
| GST_OBJECT_UNLOCK (mux); |
| #endif |
| |
| gst_caps_unref (caps); |
| return ret; |
| |
| /* ERRORS */ |
| not_negotiated: |
| { |
| GST_DEBUG_OBJECT (pad, "Sink pad caps were not set before pushing"); |
| if (caps) |
| gst_caps_unref (caps); |
| return GST_FLOW_NOT_NEGOTIATED; |
| } |
| } |
| |
| static GstFlowReturn |
| mpegtsmux_create_streams (MpegTsMux * mux) |
| { |
| GstFlowReturn ret = GST_FLOW_OK; |
| GSList *walk = mux->collect->data; |
| |
| /* Create the streams */ |
| while (walk) { |
| GstCollectData *c_data = (GstCollectData *) walk->data; |
| MpegTsPadData *ts_data = (MpegTsPadData *) walk->data; |
| gchar *name = NULL; |
| |
| walk = g_slist_next (walk); |
| |
| if (ts_data->prog_id == -1) { |
| name = GST_PAD_NAME (c_data->pad); |
| if (mux->prog_map != NULL && gst_structure_has_field (mux->prog_map, |
| name)) { |
| gint idx; |
| gboolean ret = gst_structure_get_int (mux->prog_map, name, &idx); |
| if (!ret) { |
| GST_ELEMENT_ERROR (mux, STREAM, MUX, |
| ("Reading program map failed. Assuming default"), (NULL)); |
| idx = DEFAULT_PROG_ID; |
| } |
| if (idx < 0 || idx >= MAX_PROG_NUMBER) { |
| GST_DEBUG_OBJECT (mux, "Program number %d associate with pad %s out " |
| "of range (max = %d); DEFAULT_PROGRAM = %d is used instead", |
| idx, name, MAX_PROG_NUMBER, DEFAULT_PROG_ID); |
| idx = DEFAULT_PROG_ID; |
| } |
| ts_data->prog_id = idx; |
| } else { |
| ts_data->prog_id = DEFAULT_PROG_ID; |
| } |
| } |
| |
| ts_data->prog = mux->programs[ts_data->prog_id]; |
| if (ts_data->prog == NULL) { |
| ts_data->prog = tsmux_program_new (mux->tsmux, ts_data->prog_id); |
| if (ts_data->prog == NULL) |
| goto no_program; |
| tsmux_set_pmt_interval (ts_data->prog, mux->pmt_interval); |
| mux->programs[ts_data->prog_id] = ts_data->prog; |
| } |
| |
| if (ts_data->stream == NULL) { |
| ret = mpegtsmux_create_stream (mux, ts_data); |
| if (ret != GST_FLOW_OK) |
| goto no_stream; |
| } |
| } |
| |
| return GST_FLOW_OK; |
| |
| /* ERRORS */ |
| no_program: |
| { |
| GST_ELEMENT_ERROR (mux, STREAM, MUX, |
| ("Could not create new program"), (NULL)); |
| return GST_FLOW_ERROR; |
| } |
| no_stream: |
| { |
| GST_ELEMENT_ERROR (mux, STREAM, MUX, |
| ("Could not create handler for stream"), (NULL)); |
| return ret; |
| } |
| } |
| |
| |
| #define COLLECT_DATA_PAD(collect_data) (((GstCollectData *)(collect_data))->pad) |
| |
| static gboolean |
| mpegtsmux_sink_event (GstCollectPads * pads, GstCollectData * data, |
| GstEvent * event, gpointer user_data) |
| { |
| MpegTsMux *mux = GST_MPEG_TSMUX (user_data); |
| gboolean res = FALSE; |
| gboolean forward = TRUE; |
| MpegTsPadData *pad_data = (MpegTsPadData *) data; |
| |
| #ifndef GST_DISABLE_GST_DEBUG |
| GstPad *pad; |
| |
| pad = data->pad; |
| #endif |
| |
| switch (GST_EVENT_TYPE (event)) { |
| case GST_EVENT_CUSTOM_DOWNSTREAM: |
| { |
| GstClockTime timestamp, stream_time, running_time; |
| gboolean all_headers; |
| guint count; |
| |
| if (!gst_video_event_is_force_key_unit (event)) |
| goto out; |
| |
| res = TRUE; |
| forward = FALSE; |
| |
| gst_video_event_parse_downstream_force_key_unit (event, |
| ×tamp, &stream_time, &running_time, &all_headers, &count); |
| GST_INFO_OBJECT (pad, "have downstream force-key-unit event, " |
| "seqnum %d, running-time %" GST_TIME_FORMAT " count %d", |
| gst_event_get_seqnum (event), GST_TIME_ARGS (running_time), count); |
| |
| if (mux->force_key_unit_event != NULL) { |
| GST_INFO_OBJECT (mux, "skipping downstream force key unit event " |
| "as an upstream force key unit is already queued"); |
| goto out; |
| } |
| |
| if (!all_headers) |
| goto out; |
| |
| mux->pending_key_unit_ts = running_time; |
| gst_event_replace (&mux->force_key_unit_event, event); |
| break; |
| } |
| case GST_EVENT_TAG:{ |
| GstTagList *list; |
| gchar *lang = NULL; |
| |
| GST_DEBUG_OBJECT (mux, "received tag event"); |
| gst_event_parse_tag (event, &list); |
| |
| /* Matroska wants ISO 639-2B code, taglist most likely contains 639-1 */ |
| if (gst_tag_list_get_string (list, GST_TAG_LANGUAGE_CODE, &lang)) { |
| const gchar *lang_code; |
| |
| lang_code = gst_tag_get_language_code_iso_639_2B (lang); |
| if (lang_code) { |
| GST_DEBUG_OBJECT (pad, "Setting language to '%s'", lang_code); |
| pad_data->language = g_strdup (lang_code); |
| } else { |
| GST_WARNING_OBJECT (pad, "Did not get language code for '%s'", lang); |
| } |
| g_free (lang); |
| } |
| |
| /* handled this, don't want collectpads to forward it downstream */ |
| res = TRUE; |
| forward = gst_tag_list_get_scope (list) == GST_TAG_SCOPE_GLOBAL; |
| break; |
| } |
| default: |
| break; |
| } |
| |
| out: |
| if (!forward) |
| gst_event_unref (event); |
| else |
| res = gst_collect_pads_event_default (pads, data, event, FALSE); |
| |
| return res; |
| } |
| |
| static gboolean |
| mpegtsmux_src_event (GstPad * pad, GstObject * parent, GstEvent * event) |
| { |
| MpegTsMux *mux = GST_MPEG_TSMUX (gst_pad_get_parent (pad)); |
| gboolean res = TRUE, forward = TRUE; |
| |
| switch (GST_EVENT_TYPE (event)) { |
| case GST_EVENT_CUSTOM_UPSTREAM: |
| { |
| GstIterator *iter; |
| GstIteratorResult iter_ret; |
| GstPad *sinkpad; |
| GValue sinkpad_value = G_VALUE_INIT; |
| GstClockTime running_time; |
| gboolean all_headers, done; |
| guint count; |
| |
| if (!gst_video_event_is_force_key_unit (event)) |
| break; |
| |
| forward = FALSE; |
| |
| gst_video_event_parse_upstream_force_key_unit (event, |
| &running_time, &all_headers, &count); |
| |
| GST_INFO_OBJECT (mux, "received upstream force-key-unit event, " |
| "seqnum %d running_time %" GST_TIME_FORMAT " all_headers %d count %d", |
| gst_event_get_seqnum (event), GST_TIME_ARGS (running_time), |
| all_headers, count); |
| |
| if (!all_headers) |
| break; |
| |
| mux->pending_key_unit_ts = running_time; |
| gst_event_replace (&mux->force_key_unit_event, event); |
| |
| iter = gst_element_iterate_sink_pads (GST_ELEMENT_CAST (mux)); |
| done = FALSE; |
| while (!done) { |
| gboolean res = FALSE, tmp; |
| iter_ret = gst_iterator_next (iter, &sinkpad_value); |
| sinkpad = g_value_get_object (&sinkpad_value); |
| |
| switch (iter_ret) { |
| case GST_ITERATOR_DONE: |
| done = TRUE; |
| break; |
| case GST_ITERATOR_OK: |
| GST_INFO_OBJECT (pad, "forwarding"); |
| tmp = gst_pad_push_event (sinkpad, gst_event_ref (event)); |
| GST_INFO_OBJECT (mux, "result %d", tmp); |
| /* succeed if at least one pad succeeds */ |
| res |= tmp; |
| break; |
| case GST_ITERATOR_ERROR: |
| done = TRUE; |
| break; |
| case GST_ITERATOR_RESYNC: |
| break; |
| } |
| g_value_reset (&sinkpad_value); |
| } |
| g_value_unset (&sinkpad_value); |
| gst_iterator_free (iter); |
| break; |
| } |
| default: |
| break; |
| } |
| |
| if (forward) |
| res = gst_pad_event_default (pad, parent, event); |
| else |
| gst_event_unref (event); |
| |
| gst_object_unref (mux); |
| return res; |
| } |
| |
| static GstEvent * |
| check_pending_key_unit_event (GstEvent * pending_event, GstSegment * segment, |
| GstClockTime timestamp, guint flags, GstClockTime pending_key_unit_ts) |
| { |
| GstClockTime running_time, stream_time; |
| gboolean all_headers; |
| guint count; |
| GstEvent *event = NULL; |
| |
| g_assert (segment != NULL); |
| |
| if (pending_event == NULL) |
| goto out; |
| |
| if (GST_CLOCK_TIME_IS_VALID (pending_key_unit_ts) && |
| timestamp == GST_CLOCK_TIME_NONE) |
| goto out; |
| |
| running_time = gst_segment_to_running_time (segment, |
| GST_FORMAT_TIME, timestamp); |
| |
| GST_INFO ("now %" GST_TIME_FORMAT " wanted %" GST_TIME_FORMAT, |
| GST_TIME_ARGS (running_time), GST_TIME_ARGS (pending_key_unit_ts)); |
| if (GST_CLOCK_TIME_IS_VALID (pending_key_unit_ts) && |
| running_time < pending_key_unit_ts) |
| goto out; |
| |
| if (flags & GST_BUFFER_FLAG_DELTA_UNIT) { |
| GST_INFO ("pending force key unit, waiting for keyframe"); |
| goto out; |
| } |
| |
| stream_time = gst_segment_to_stream_time (segment, |
| GST_FORMAT_TIME, timestamp); |
| |
| if (GST_EVENT_TYPE (pending_event) == GST_EVENT_CUSTOM_DOWNSTREAM) { |
| gst_video_event_parse_downstream_force_key_unit (pending_event, |
| NULL, NULL, NULL, &all_headers, &count); |
| } else { |
| gst_video_event_parse_upstream_force_key_unit (pending_event, NULL, |
| &all_headers, &count); |
| } |
| |
| event = |
| gst_video_event_new_downstream_force_key_unit (timestamp, stream_time, |
| running_time, all_headers, count); |
| gst_event_set_seqnum (event, gst_event_get_seqnum (pending_event)); |
| |
| out: |
| return event; |
| } |
| |
| GstFlowReturn |
| mpegtsmux_clip_inc_running_time (GstCollectPads * pads, |
| GstCollectData * cdata, GstBuffer * buf, GstBuffer ** outbuf, |
| gpointer user_data) |
| { |
| MpegTsPadData *pad_data = (MpegTsPadData *) cdata; |
| GstClockTime time; |
| |
| *outbuf = buf; |
| |
| /* PTS */ |
| time = GST_BUFFER_TIMESTAMP (buf); |
| |
| /* invalid left alone and passed */ |
| if (G_LIKELY (GST_CLOCK_TIME_IS_VALID (time))) { |
| time = gst_segment_to_running_time (&cdata->segment, GST_FORMAT_TIME, time); |
| if (G_UNLIKELY (!GST_CLOCK_TIME_IS_VALID (time))) { |
| GST_DEBUG_OBJECT (cdata->pad, "clipping buffer on pad outside segment"); |
| gst_buffer_unref (buf); |
| *outbuf = NULL; |
| goto beach; |
| } else { |
| GST_LOG_OBJECT (cdata->pad, "buffer pts %" GST_TIME_FORMAT " -> %" |
| GST_TIME_FORMAT " running time", |
| GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)), GST_TIME_ARGS (time)); |
| buf = *outbuf = gst_buffer_make_writable (buf); |
| GST_BUFFER_TIMESTAMP (*outbuf) = time; |
| } |
| } |
| |
| /* DTS */ |
| time = GST_BUFFER_DTS (buf); |
| |
| /* invalid left alone and passed */ |
| if (G_LIKELY (GST_CLOCK_TIME_IS_VALID (time))) { |
| time = gst_segment_to_running_time (&cdata->segment, GST_FORMAT_TIME, time); |
| /* may have to decode out-of-segment, so pass INVALID */ |
| if (G_UNLIKELY (!GST_CLOCK_TIME_IS_VALID (time))) { |
| GST_DEBUG_OBJECT (cdata->pad, "running dts outside segment"); |
| } else { |
| GST_LOG_OBJECT (cdata->pad, "buffer dts %" GST_TIME_FORMAT " -> %" |
| GST_TIME_FORMAT " running time", |
| GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)), GST_TIME_ARGS (time)); |
| if (GST_CLOCK_TIME_IS_VALID (pad_data->min_dts) && |
| time < pad_data->min_dts) { |
| /* Ignore DTS going backward */ |
| GST_WARNING_OBJECT (cdata->pad, "ignoring DTS going backward"); |
| time = pad_data->min_dts; |
| } |
| buf = *outbuf = gst_buffer_make_writable (buf); |
| GST_BUFFER_DTS (*outbuf) = time; |
| } |
| } |
| |
| buf = *outbuf; |
| if (pad_data->prepare_func) { |
| MpegTsMux *mux = (MpegTsMux *) user_data; |
| |
| *outbuf = pad_data->prepare_func (buf, pad_data, mux); |
| g_assert (*outbuf); |
| gst_buffer_unref (buf); |
| } |
| |
| beach: |
| return GST_FLOW_OK; |
| } |
| |
| static GstFlowReturn |
| mpegtsmux_collected_buffer (GstCollectPads * pads, GstCollectData * data, |
| GstBuffer * buf, MpegTsMux * mux) |
| { |
| GstFlowReturn ret = GST_FLOW_OK; |
| MpegTsPadData *best = (MpegTsPadData *) data; |
| TsMuxProgram *prog; |
| gint64 pts = -1; |
| guint64 dts = -1; |
| gboolean delta = TRUE; |
| StreamData *stream_data; |
| |
| GST_DEBUG_OBJECT (mux, "Pads collected"); |
| |
| if (G_UNLIKELY (mux->first)) { |
| ret = mpegtsmux_create_streams (mux); |
| if (G_UNLIKELY (ret != GST_FLOW_OK)) |
| return ret; |
| |
| mpegtsmux_prepare_srcpad (mux); |
| |
| mux->first = FALSE; |
| } |
| |
| if (G_UNLIKELY (best == NULL)) { |
| /* EOS */ |
| /* drain some possibly cached data */ |
| new_packet_m2ts (mux, NULL, -1); |
| mpegtsmux_push_packets (mux, TRUE); |
| gst_pad_push_event (mux->srcpad, gst_event_new_eos ()); |
| |
| return GST_FLOW_OK; |
| } |
| |
| prog = best->prog; |
| if (prog == NULL) |
| goto no_program; |
| |
| g_assert (buf != NULL); |
| |
| if (mux->force_key_unit_event != NULL && best->stream->is_video_stream) { |
| GstEvent *event; |
| |
| event = check_pending_key_unit_event (mux->force_key_unit_event, |
| &best->collect.segment, GST_BUFFER_TIMESTAMP (buf), |
| GST_BUFFER_FLAGS (buf), mux->pending_key_unit_ts); |
| if (event) { |
| GstClockTime running_time; |
| guint count; |
| GList *cur; |
| |
| mux->pending_key_unit_ts = GST_CLOCK_TIME_NONE; |
| gst_event_replace (&mux->force_key_unit_event, NULL); |
| |
| gst_video_event_parse_downstream_force_key_unit (event, |
| NULL, NULL, &running_time, NULL, &count); |
| |
| GST_INFO_OBJECT (mux, "pushing downstream force-key-unit event %d " |
| "%" GST_TIME_FORMAT " count %d", gst_event_get_seqnum (event), |
| GST_TIME_ARGS (running_time), count); |
| gst_pad_push_event (mux->srcpad, event); |
| |
| /* output PAT */ |
| mux->tsmux->last_pat_ts = -1; |
| |
| /* output PMT for each program */ |
| for (cur = mux->tsmux->programs; cur; cur = cur->next) { |
| TsMuxProgram *program = (TsMuxProgram *) cur->data; |
| |
| program->last_pmt_ts = -1; |
| } |
| tsmux_program_set_pcr_stream (prog, NULL); |
| } |
| } |
| |
| if (G_UNLIKELY (prog->pcr_stream == NULL)) { |
| /* Take the first data stream for the PCR */ |
| GST_DEBUG_OBJECT (COLLECT_DATA_PAD (best), |
| "Use stream (pid=%d) from pad as PCR for program (prog_id = %d)", |
| MPEG_TS_PAD_DATA (best)->pid, MPEG_TS_PAD_DATA (best)->prog_id); |
| |
| /* Set the chosen PCR stream */ |
| tsmux_program_set_pcr_stream (prog, best->stream); |
| } |
| |
| GST_DEBUG_OBJECT (COLLECT_DATA_PAD (best), |
| "Chose stream for output (PID: 0x%04x)", best->pid); |
| |
| if (GST_CLOCK_TIME_IS_VALID (GST_BUFFER_PTS (buf))) { |
| pts = GSTTIME_TO_MPEGTIME (GST_BUFFER_PTS (buf)); |
| GST_DEBUG_OBJECT (mux, "Buffer has PTS %" GST_TIME_FORMAT " pts %" |
| G_GINT64_FORMAT, GST_TIME_ARGS (GST_BUFFER_PTS (buf)), pts); |
| } |
| |
| if (GST_CLOCK_TIME_IS_VALID (GST_BUFFER_DTS (buf))) { |
| dts = GSTTIME_TO_MPEGTIME (GST_BUFFER_DTS (buf)); |
| GST_DEBUG_OBJECT (mux, "Buffer has DTS %" GST_TIME_FORMAT " dts %" |
| G_GINT64_FORMAT, GST_TIME_ARGS (GST_BUFFER_DTS (buf)), dts); |
| } |
| |
| /* should not have a DTS without PTS */ |
| if (pts == -1 && dts != -1) { |
| GST_DEBUG_OBJECT (mux, "using DTS for unknown PTS"); |
| pts = dts; |
| } |
| |
| if (best->stream->is_video_stream) { |
| delta = GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT); |
| #if 0 |
| GST_OBJECT_LOCK (mux); |
| if (mux->element_index && !delta && best->element_index_writer_id != -1) { |
| gst_index_add_association (mux->element_index, |
| best->element_index_writer_id, |
| GST_ASSOCIATION_FLAG_KEY_UNIT, spn_format, mux->spn_count, |
| pts_format, pts, NULL); |
| } |
| GST_OBJECT_UNLOCK (mux); |
| #endif |
| } |
| GST_DEBUG_OBJECT (mux, "delta: %d", delta); |
| |
| stream_data = stream_data_new (buf); |
| tsmux_stream_add_data (best->stream, stream_data->map_info.data, |
| stream_data->map_info.size, stream_data, pts, dts, !delta); |
| |
| /* outgoing ts follows ts of PCR program stream */ |
| if (prog->pcr_stream == best->stream) { |
| /* prefer DTS if present for PCR as it should be monotone */ |
| mux->last_ts = |
| GST_CLOCK_TIME_IS_VALID (GST_BUFFER_DTS (buf)) ? |
| GST_BUFFER_DTS (buf) : GST_BUFFER_PTS (buf); |
| } |
| |
| mux->is_delta = delta; |
| while (tsmux_stream_bytes_in_buffer (best->stream) > 0) { |
| if (!tsmux_write_stream_packet (mux->tsmux, best->stream)) { |
| /* Failed writing data for some reason. Set appropriate error */ |
| GST_DEBUG_OBJECT (mux, "Failed to write data packet"); |
| GST_ELEMENT_ERROR (mux, STREAM, MUX, |
| ("Failed writing output data to stream %04x", best->stream->id), |
| (NULL)); |
| goto write_fail; |
| } |
| } |
| /* flush packet cache */ |
| return mpegtsmux_push_packets (mux, FALSE); |
| |
| /* ERRORS */ |
| write_fail: |
| { |
| return mux->last_flow_ret; |
| } |
| no_program: |
| { |
| GST_ELEMENT_ERROR (mux, STREAM, MUX, |
| ("Stream on pad %" GST_PTR_FORMAT |
| " is not associated with any program", COLLECT_DATA_PAD (best)), |
| (NULL)); |
| return GST_FLOW_ERROR; |
| } |
| } |
| |
| static GstPad * |
| mpegtsmux_request_new_pad (GstElement * element, GstPadTemplate * templ, |
| const gchar * name, const GstCaps * caps) |
| { |
| MpegTsMux *mux = GST_MPEG_TSMUX (element); |
| gint pid = -1; |
| gchar *pad_name = NULL; |
| GstPad *pad = NULL; |
| MpegTsPadData *pad_data = NULL; |
| |
| if (name != NULL && sscanf (name, "sink_%d", &pid) == 1) { |
| if (tsmux_find_stream (mux->tsmux, pid)) |
| goto stream_exists; |
| } else { |
| pid = tsmux_get_new_pid (mux->tsmux); |
| } |
| |
| pad_name = g_strdup_printf ("sink_%d", pid); |
| pad = gst_pad_new_from_template (templ, pad_name); |
| g_free (pad_name); |
| |
| pad_data = (MpegTsPadData *) |
| gst_collect_pads_add_pad (mux->collect, pad, sizeof (MpegTsPadData), |
| (GstCollectDataDestroyNotify) (mpegtsmux_pad_reset), TRUE); |
| if (pad_data == NULL) |
| goto pad_failure; |
| |
| mpegtsmux_pad_reset (pad_data); |
| pad_data->pid = pid; |
| |
| if (G_UNLIKELY (!gst_element_add_pad (element, pad))) |
| goto could_not_add; |
| |
| return pad; |
| |
| /* ERRORS */ |
| stream_exists: |
| { |
| GST_ELEMENT_ERROR (element, STREAM, MUX, ("Duplicate PID requested"), |
| (NULL)); |
| return NULL; |
| } |
| could_not_add: |
| { |
| GST_ELEMENT_ERROR (element, STREAM, FAILED, |
| ("Internal data stream error."), ("Could not add pad to element")); |
| gst_collect_pads_remove_pad (mux->collect, pad); |
| gst_object_unref (pad); |
| return NULL; |
| } |
| pad_failure: |
| { |
| GST_ELEMENT_ERROR (element, STREAM, FAILED, |
| ("Internal data stream error."), ("Could not add pad to collectpads")); |
| gst_object_unref (pad); |
| return NULL; |
| } |
| } |
| |
| static void |
| mpegtsmux_release_pad (GstElement * element, GstPad * pad) |
| { |
| MpegTsMux *mux = GST_MPEG_TSMUX (element); |
| |
| GST_DEBUG_OBJECT (mux, "Pad %" GST_PTR_FORMAT " being released", pad); |
| |
| if (mux->collect) { |
| gst_collect_pads_remove_pad (mux->collect, pad); |
| } |
| |
| /* chain up */ |
| gst_element_remove_pad (element, pad); |
| } |
| |
| static void |
| new_packet_common_init (MpegTsMux * mux, GstBuffer * buf, guint8 * data, |
| guint len) |
| { |
| /* Packets should be at least 188 bytes, but check anyway */ |
| g_assert (len >= 2 || !data); |
| |
| if (!mux->streamheader_sent && data) { |
| guint pid = ((data[1] & 0x1f) << 8) | data[2]; |
| /* if it's a PAT or a PMT */ |
| if (pid == 0x00 || (pid >= TSMUX_START_PMT_PID && pid < TSMUX_START_ES_PID)) { |
| GstBuffer *hbuf; |
| |
| if (!buf) { |
| hbuf = gst_buffer_new_and_alloc (len); |
| gst_buffer_fill (hbuf, 0, data, len); |
| } else { |
| hbuf = gst_buffer_copy (buf); |
| } |
| mux->streamheader = g_list_append (mux->streamheader, hbuf); |
| } else if (mux->streamheader) { |
| mpegtsmux_set_header_on_caps (mux); |
| mux->streamheader_sent = TRUE; |
| } |
| } |
| |
| if (buf) { |
| if (mux->is_delta) { |
| GST_LOG_OBJECT (mux, "marking as delta unit"); |
| GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT); |
| } else { |
| GST_DEBUG_OBJECT (mux, "marking as non-delta unit"); |
| mux->is_delta = TRUE; |
| } |
| } |
| } |
| |
| static GstFlowReturn |
| mpegtsmux_push_packets (MpegTsMux * mux, gboolean force) |
| { |
| GstBufferList *buffer_list; |
| gint align = mux->alignment; |
| gint av, packet_size; |
| |
| if (mux->m2ts_mode) { |
| packet_size = M2TS_PACKET_LENGTH; |
| if (align < 0) |
| align = 32; |
| } else { |
| packet_size = NORMAL_TS_PACKET_LENGTH; |
| if (align < 0) |
| align = 0; |
| } |
| |
| av = gst_adapter_available (mux->out_adapter); |
| GST_LOG_OBJECT (mux, "align %d, av %d", align, av); |
| |
| if (av == 0) |
| return GST_FLOW_OK; |
| |
| /* no alignment, just push all available data */ |
| if (align == 0) { |
| buffer_list = gst_adapter_take_buffer_list (mux->out_adapter, av); |
| return gst_pad_push_list (mux->srcpad, buffer_list); |
| } |
| |
| align *= packet_size; |
| |
| if (!force && align > av) |
| return GST_FLOW_OK; |
| |
| buffer_list = gst_buffer_list_new_sized ((av / align) + 1); |
| |
| GST_LOG_OBJECT (mux, "aligning to %d bytes", align); |
| while (align <= av) { |
| gst_buffer_list_add (buffer_list, |
| gst_adapter_take_buffer (mux->out_adapter, align)); |
| av -= align; |
| } |
| |
| if (av > 0 && force) { |
| GstBuffer *buf; |
| guint8 *data; |
| guint32 header; |
| gint dummy; |
| GstMapInfo map; |
| |
| GST_LOG_OBJECT (mux, "handling %d leftover bytes", av); |
| buf = gst_buffer_new_and_alloc (align); |
| gst_buffer_map (buf, &map, GST_MAP_READ); |
| data = map.data; |
| |
| gst_adapter_copy (mux->out_adapter, data, 0, av); |
| gst_adapter_clear (mux->out_adapter); |
| |
| data += av; |
| header = GST_READ_UINT32_BE (data - packet_size); |
| |
| dummy = (map.size - av) / packet_size; |
| GST_LOG_OBJECT (mux, "adding %d null packets", dummy); |
| |
| for (; dummy > 0; dummy--) { |
| gint offset; |
| |
| if (packet_size > NORMAL_TS_PACKET_LENGTH) { |
| GST_WRITE_UINT32_BE (data, header); |
| /* simply increase header a bit and never mind too much */ |
| header++; |
| offset = 4; |
| } else { |
| offset = 0; |
| } |
| GST_WRITE_UINT8 (data + offset, TSMUX_SYNC_BYTE); |
| /* null packet PID */ |
| GST_WRITE_UINT16_BE (data + offset + 1, 0x1FFF); |
| /* no adaptation field exists | continuity counter undefined */ |
| GST_WRITE_UINT8 (data + offset + 3, 0x10); |
| /* payload */ |
| memset (data + offset + 4, 0, NORMAL_TS_PACKET_LENGTH - 4); |
| data += packet_size; |
| } |
| |
| gst_buffer_unmap (buf, &map); |
| gst_buffer_list_add (buffer_list, buf); |
| } |
| |
| return gst_pad_push_list (mux->srcpad, buffer_list); |
| } |
| |
| static GstFlowReturn |
| mpegtsmux_collect_packet (MpegTsMux * mux, GstBuffer * buf) |
| { |
| GST_LOG_OBJECT (mux, "collecting packet size %" G_GSIZE_FORMAT, |
| gst_buffer_get_size (buf)); |
| gst_adapter_push (mux->out_adapter, buf); |
| |
| return GST_FLOW_OK; |
| } |
| |
| static gboolean |
| new_packet_m2ts (MpegTsMux * mux, GstBuffer * buf, gint64 new_pcr) |
| { |
| GstBuffer *out_buf; |
| int chunk_bytes; |
| GstMapInfo map; |
| |
| GST_LOG_OBJECT (mux, "Have buffer %p with new_pcr=%" G_GINT64_FORMAT, |
| buf, new_pcr); |
| |
| chunk_bytes = gst_adapter_available (mux->adapter); |
| |
| if (G_LIKELY (buf)) { |
| if (new_pcr < 0) { |
| /* If there is no pcr in current ts packet then just add the packet |
| to the adapter for later output when we see a PCR */ |
| GST_LOG_OBJECT (mux, "Accumulating non-PCR packet"); |
| gst_adapter_push (mux->adapter, buf); |
| goto exit; |
| } |
| |
| /* no first interpolation point yet, then this is the one, |
| * otherwise it is the second interpolation point */ |
| if (mux->previous_pcr < 0 && chunk_bytes) { |
| mux->previous_pcr = new_pcr; |
| mux->previous_offset = chunk_bytes; |
| GST_LOG_OBJECT (mux, "Accumulating non-PCR packet"); |
| gst_adapter_push (mux->adapter, buf); |
| goto exit; |
| } |
| } else { |
| g_assert (new_pcr == -1); |
| } |
| |
| /* interpolate if needed, and 2 points available */ |
| if (chunk_bytes && (new_pcr != mux->previous_pcr)) { |
| gint64 offset = 0; |
| |
| GST_LOG_OBJECT (mux, "Processing pending packets; " |
| "previous pcr %" G_GINT64_FORMAT ", previous offset %d, " |
| "current pcr %" G_GINT64_FORMAT ", current offset %d", |
| mux->previous_pcr, (gint) mux->previous_offset, |
| new_pcr, (gint) chunk_bytes); |
| |
| g_assert (chunk_bytes > mux->previous_offset); |
| /* if draining, use previous rate */ |
| if (G_LIKELY (new_pcr > 0)) { |
| mux->pcr_rate_num = new_pcr - mux->previous_pcr; |
| mux->pcr_rate_den = chunk_bytes - mux->previous_offset; |
| } |
| |
| while (offset < chunk_bytes) { |
| guint64 cur_pcr, ts; |
| |
| /* Loop, pulling packets of the adapter, updating their 4 byte |
| * timestamp header and pushing */ |
| |
| /* interpolate PCR */ |
| if (G_LIKELY (offset >= mux->previous_offset)) |
| cur_pcr = mux->previous_pcr + |
| gst_util_uint64_scale (offset - mux->previous_offset, |
| mux->pcr_rate_num, mux->pcr_rate_den); |
| else |
| cur_pcr = mux->previous_pcr - |
| gst_util_uint64_scale (mux->previous_offset - offset, |
| mux->pcr_rate_num, mux->pcr_rate_den); |
| |
| /* FIXME: what about DTS here? */ |
| ts = gst_adapter_prev_pts (mux->adapter, NULL); |
| out_buf = gst_adapter_take_buffer (mux->adapter, M2TS_PACKET_LENGTH); |
| g_assert (out_buf); |
| offset += M2TS_PACKET_LENGTH; |
| |
| GST_BUFFER_PTS (out_buf) = ts; |
| |
| gst_buffer_map (out_buf, &map, GST_MAP_WRITE); |
| |
| /* The header is the bottom 30 bits of the PCR, apparently not |
| * encoded into base + ext as in the packets themselves */ |
| GST_WRITE_UINT32_BE (map.data, cur_pcr & 0x3FFFFFFF); |
| gst_buffer_unmap (out_buf, &map); |
| |
| GST_LOG_OBJECT (mux, "Outputting a packet of length %d PCR %" |
| G_GUINT64_FORMAT, M2TS_PACKET_LENGTH, cur_pcr); |
| mpegtsmux_collect_packet (mux, out_buf); |
| } |
| } |
| |
| if (G_UNLIKELY (!buf)) |
| goto exit; |
| |
| gst_buffer_map (buf, &map, GST_MAP_WRITE); |
| |
| /* Finally, output the passed in packet */ |
| /* Only write the bottom 30 bits of the PCR */ |
| GST_WRITE_UINT32_BE (map.data, new_pcr & 0x3FFFFFFF); |
| |
| gst_buffer_unmap (buf, &map); |
| |
| GST_LOG_OBJECT (mux, "Outputting a packet of length %d PCR %" |
| G_GUINT64_FORMAT, M2TS_PACKET_LENGTH, new_pcr); |
| mpegtsmux_collect_packet (mux, buf); |
| |
| if (new_pcr != mux->previous_pcr) { |
| mux->previous_pcr = new_pcr; |
| mux->previous_offset = -M2TS_PACKET_LENGTH; |
| } |
| |
| exit: |
| return TRUE; |
| } |
| |
| /* Called when the TsMux has prepared a packet for output. Return FALSE |
| * on error */ |
| static gboolean |
| new_packet_cb (GstBuffer * buf, void *user_data, gint64 new_pcr) |
| { |
| MpegTsMux *mux = (MpegTsMux *) user_data; |
| gint offset = 0; |
| GstMapInfo map; |
| |
| #if 0 |
| GST_LOG_OBJECT (mux, "handling packet %d", mux->spn_count); |
| mux->spn_count++; |
| #endif |
| |
| if (mux->m2ts_mode) { |
| offset = 4; |
| gst_buffer_set_size (buf, NORMAL_TS_PACKET_LENGTH + offset); |
| } |
| |
| gst_buffer_map (buf, &map, GST_MAP_READWRITE); |
| |
| if (offset) { |
| /* there should be a better way to do this */ |
| memmove (map.data + offset, map.data, map.size - offset); |
| } |
| |
| GST_BUFFER_PTS (buf) = mux->last_ts; |
| /* do common init (flags and streamheaders) */ |
| new_packet_common_init (mux, buf, map.data + offset, map.size); |
| |
| gst_buffer_unmap (buf, &map); |
| |
| /* all is meant for downstream, including any prefix */ |
| if (offset) |
| return new_packet_m2ts (mux, buf, new_pcr); |
| else |
| mpegtsmux_collect_packet (mux, buf); |
| |
| return TRUE; |
| } |
| |
| /* called when TsMux needs new packet to write into */ |
| static void |
| alloc_packet_cb (GstBuffer ** _buf, void *user_data) |
| { |
| MpegTsMux *mux = (MpegTsMux *) user_data; |
| GstBuffer *buf; |
| gint offset = 0; |
| |
| if (mux->m2ts_mode == TRUE) |
| offset = 4; |
| |
| buf = gst_buffer_new_and_alloc (NORMAL_TS_PACKET_LENGTH + offset); |
| gst_buffer_set_size (buf, NORMAL_TS_PACKET_LENGTH); |
| |
| *_buf = buf; |
| } |
| |
| static void |
| mpegtsmux_set_header_on_caps (MpegTsMux * mux) |
| { |
| GstBuffer *buf; |
| GstStructure *structure; |
| GValue array = { 0 }; |
| GValue value = { 0 }; |
| GstCaps *caps; |
| GList *sh; |
| |
| caps = gst_caps_make_writable (gst_pad_get_current_caps (mux->srcpad)); |
| structure = gst_caps_get_structure (caps, 0); |
| |
| g_value_init (&array, GST_TYPE_ARRAY); |
| |
| sh = mux->streamheader; |
| while (sh) { |
| buf = sh->data; |
| g_value_init (&value, GST_TYPE_BUFFER); |
| gst_value_take_buffer (&value, buf); |
| gst_value_array_append_value (&array, &value); |
| g_value_unset (&value); |
| sh = g_list_next (sh); |
| } |
| |
| g_list_free (mux->streamheader); |
| mux->streamheader = NULL; |
| |
| gst_structure_set_value (structure, "streamheader", &array); |
| gst_pad_set_caps (mux->srcpad, caps); |
| g_value_unset (&array); |
| gst_caps_unref (caps); |
| } |
| |
| static void |
| mpegtsmux_prepare_srcpad (MpegTsMux * mux) |
| { |
| GstSegment seg; |
| /* we are not going to seek */ |
| GstEvent *new_seg; |
| gchar s_id[32]; |
| GstCaps *caps = gst_caps_new_simple ("video/mpegts", |
| "systemstream", G_TYPE_BOOLEAN, TRUE, |
| "packetsize", G_TYPE_INT, |
| (mux->m2ts_mode ? M2TS_PACKET_LENGTH : NORMAL_TS_PACKET_LENGTH), |
| NULL); |
| |
| /* stream-start (FIXME: create id based on input ids) */ |
| g_snprintf (s_id, sizeof (s_id), "mpegtsmux-%08x", g_random_int ()); |
| gst_pad_push_event (mux->srcpad, gst_event_new_stream_start (s_id)); |
| |
| gst_segment_init (&seg, GST_FORMAT_TIME); |
| new_seg = gst_event_new_segment (&seg); |
| |
| /* Set caps on src pad from our template and push new segment */ |
| gst_pad_set_caps (mux->srcpad, caps); |
| gst_caps_unref (caps); |
| |
| if (!gst_pad_push_event (mux->srcpad, new_seg)) { |
| GST_WARNING_OBJECT (mux, "New segment event was not handled downstream"); |
| } |
| } |
| |
| static GstStateChangeReturn |
| mpegtsmux_change_state (GstElement * element, GstStateChange transition) |
| { |
| MpegTsMux *mux = GST_MPEG_TSMUX (element); |
| GstStateChangeReturn ret; |
| |
| 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; |
| case GST_STATE_CHANGE_READY_TO_NULL: |
| 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: |
| mpegtsmux_reset (mux, TRUE); |
| break; |
| case GST_STATE_CHANGE_READY_TO_NULL: |
| break; |
| default: |
| break; |
| } |
| |
| return ret; |
| } |
| |
| static gboolean |
| mpegtsmux_send_event (GstElement * element, GstEvent * event) |
| { |
| GstMpegtsSection *section; |
| MpegTsMux *mux = GST_MPEG_TSMUX (element); |
| |
| section = gst_event_parse_mpegts_section (event); |
| gst_event_unref (event); |
| |
| if (section) { |
| GST_DEBUG ("Received event with mpegts section"); |
| |
| /* TODO: Check that the section type is supported */ |
| tsmux_add_mpegts_si_section (mux->tsmux, section); |
| |
| return TRUE; |
| } |
| |
| return FALSE; |
| } |
| |
| static gboolean |
| plugin_init (GstPlugin * plugin) |
| { |
| gst_mpegts_initialize (); |
| if (!gst_element_register (plugin, "mpegtsmux", GST_RANK_PRIMARY, |
| mpegtsmux_get_type ())) |
| return FALSE; |
| |
| GST_DEBUG_CATEGORY_INIT (mpegtsmux_debug, "mpegtsmux", 0, |
| "MPEG Transport Stream muxer"); |
| |
| return TRUE; |
| } |
| |
| GST_PLUGIN_DEFINE (GST_VERSION_MAJOR, GST_VERSION_MINOR, |
| mpegtsmux, "MPEG-TS muxer", |
| plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN); |