/* ASF muxer plugin for GStreamer * Copyright (C) 2009 Thiago Santos * * 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. */ /* based on: * - avimux (by Ronald Bultje and Mark Nauwelaerts) * - qtmux (by Thiago Santos and Mark Nauwelaerts) */ /** * SECTION:element-asfmux * * Muxes media into an ASF file/stream. * * Pad names are either video_xx or audio_xx, where 'xx' is the * stream number of the stream that goes through that pad. Stream numbers * are assigned sequentially, starting from 1. * * * Example launch lines * (write everything in one line, without the backslash characters) * |[ * gst-launch videotestsrc num-buffers=250 \ * ! "video/x-raw-yuv,format=(fourcc)I420,framerate=(fraction)25/1" ! ffenc_wmv2 \ * ! asfmux name=mux ! filesink location=test.asf \ * audiotestsrc num-buffers=440 ! audioconvert \ * ! "audio/x-raw-int,rate=44100" ! ffenc_wmav2 ! mux. * ]| This creates an ASF file containing an WMV video stream * with a test picture and WMA audio stream of a test sound. * * Live streaming * asfmux and rtpasfpay are capable of generating a live asf stream. * asfmux has to set its 'is-live' property to true, because in this * mode it won't try to seek back to the start of the file to replace * some fields that couldn't be known at the file start. In this mode, * it won't also send indexes at the end of the data packets (the actual * media content) * the following pipelines are an example of this usage. * (write everything in one line, without the backslash characters) * Server (sender) * |[ * gst-launch -ve videotestsrc ! ffenc_wmv2 ! asfmux name=mux is-live=true \ * ! rtpasfpay ! udpsink host=127.0.0.1 port=3333 \ * audiotestsrc ! ffenc_wmav2 ! mux. * ]| * Client (receiver) * |[ * gst-launch udpsrc port=3333 ! "caps_from_rtpasfpay_at_sender" \ * ! rtpasfdepay ! decodebin2 name=d ! queue \ * ! ffmpegcolorspace ! autovideosink \ * d. ! queue ! audioconvert ! autoaudiosink * ]| * */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include #include "gstasfmux.h" #define DEFAULT_SIMPLE_INDEX_TIME_INTERVAL G_GUINT64_CONSTANT (10000000) #define MAX_PAYLOADS_IN_A_PACKET 63 GST_DEBUG_CATEGORY_STATIC (asfmux_debug); #define GST_CAT_DEFAULT asfmux_debug enum { PROP_0, PROP_PACKET_SIZE, PROP_PREROLL, PROP_MERGE_STREAM_TAGS, PROP_PADDING, PROP_IS_LIVE, PROP_STREAMABLE }; /* Stores a tag list for the available/known tags * in an ASF file * Also stores the sizes those entries would use in a * content description object and extended content * description object */ typedef struct { GstTagList *tags; guint64 cont_desc_size; guint64 ext_cont_desc_size; } GstAsfTags; /* Helper struct to be used as user data * in gst_tag_foreach function for writing * each tag for the metadata objects * * stream_num is used only for stream dependent tags */ typedef struct { GstAsfMux *asfmux; guint8 *buf; guint16 count; guint64 size; guint16 stream_num; } GstAsfExtContDescData; typedef GstAsfExtContDescData GstAsfMetadataObjData; #define DEFAULT_PACKET_SIZE 4800 #define DEFAULT_PREROLL 5000 #define DEFAULT_MERGE_STREAM_TAGS TRUE #define DEFAULT_PADDING 0 #define DEFAULT_STREAMABLE FALSE static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src", GST_PAD_SRC, GST_PAD_ALWAYS, GST_STATIC_CAPS ("video/x-ms-asf, " "parsed = (boolean) true") ); static GstStaticPadTemplate video_sink_factory = GST_STATIC_PAD_TEMPLATE ("video_%d", GST_PAD_SINK, GST_PAD_REQUEST, GST_STATIC_CAPS ("video/x-wmv, wmvversion = (int) [1,3]")); static GstStaticPadTemplate audio_sink_factory = GST_STATIC_PAD_TEMPLATE ("audio_%d", GST_PAD_SINK, GST_PAD_REQUEST, GST_STATIC_CAPS ("audio/x-wma, wmaversion = (int) [1,3]; " "audio/mpeg, layer = (int) 3, mpegversion = (int) 1, " "channels = (int) [1,2], rate = (int) [8000,96000]")); static void gst_asf_mux_base_init (gpointer g_class); static void gst_asf_mux_class_init (GstAsfMuxClass * klass); static void gst_asf_mux_init (GstAsfMux * asfmux); static GstPad *gst_asf_mux_request_new_pad (GstElement * element, GstPadTemplate * templ, const gchar * name); static void gst_asf_mux_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec); static void gst_asf_mux_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec); static GstStateChangeReturn gst_asf_mux_change_state (GstElement * element, GstStateChange transition); static gboolean gst_asf_mux_sink_event (GstPad * pad, GstEvent * event); static void gst_asf_mux_pad_reset (GstAsfPad * data); static GstFlowReturn gst_asf_mux_collected (GstCollectPads * collect, gpointer data); static GstElementClass *parent_class = NULL; GType gst_asf_mux_get_type (void) { static GType asfmux_type = 0; if (!asfmux_type) { static const GTypeInfo asfmux_info = { sizeof (GstAsfMuxClass), gst_asf_mux_base_init, NULL, (GClassInitFunc) gst_asf_mux_class_init, NULL, NULL, sizeof (GstAsfMux), 0, (GInstanceInitFunc) gst_asf_mux_init, }; static const GInterfaceInfo tag_setter_info = { NULL, NULL, NULL }; asfmux_type = g_type_register_static (GST_TYPE_ELEMENT, "GstAsfMux", &asfmux_info, 0); g_type_add_interface_static (asfmux_type, GST_TYPE_TAG_SETTER, &tag_setter_info); } return asfmux_type; } static void gst_asf_mux_reset (GstAsfMux * asfmux) { asfmux->state = GST_ASF_MUX_STATE_NONE; asfmux->stream_number = 0; asfmux->data_object_size = 0; asfmux->data_object_position = 0; asfmux->file_properties_object_position = 0; asfmux->total_data_packets = 0; asfmux->file_size = 0; asfmux->packet_size = 0; asfmux->first_ts = GST_CLOCK_TIME_NONE; if (asfmux->payloads) { GSList *walk; for (walk = asfmux->payloads; walk; walk = g_slist_next (walk)) { gst_asf_payload_free ((AsfPayload *) walk->data); walk->data = NULL; } g_slist_free (asfmux->payloads); } asfmux->payloads = NULL; asfmux->payload_data_size = 0; asfmux->file_id.v1 = 0; asfmux->file_id.v2 = 0; asfmux->file_id.v3 = 0; asfmux->file_id.v4 = 0; gst_tag_setter_reset_tags (GST_TAG_SETTER (asfmux)); } static void gst_asf_mux_base_init (gpointer g_class) { GstElementClass *element_class = GST_ELEMENT_CLASS (g_class); gst_element_class_add_pad_template (element_class, gst_static_pad_template_get (&src_factory)); gst_element_class_add_pad_template (element_class, gst_static_pad_template_get (&audio_sink_factory)); gst_element_class_add_pad_template (element_class, gst_static_pad_template_get (&video_sink_factory)); gst_element_class_set_details_simple (element_class, "ASF muxer", "Codec/Muxer", "Muxes audio and video into an ASF stream", "Thiago Santos "); GST_DEBUG_CATEGORY_INIT (asfmux_debug, "asfmux", 0, "Muxer for ASF streams"); } static void gst_asf_mux_finalize (GObject * object) { GstAsfMux *asfmux; asfmux = GST_ASF_MUX (object); gst_asf_mux_reset (asfmux); gst_object_unref (asfmux->collect); G_OBJECT_CLASS (parent_class)->finalize (object); } static void gst_asf_mux_class_init (GstAsfMuxClass * klass) { GObjectClass *gobject_class; GstElementClass *gstelement_class; gobject_class = (GObjectClass *) klass; gstelement_class = (GstElementClass *) klass; parent_class = g_type_class_peek_parent (klass); gobject_class->get_property = gst_asf_mux_get_property; gobject_class->set_property = gst_asf_mux_set_property; gobject_class->finalize = gst_asf_mux_finalize; g_object_class_install_property (gobject_class, PROP_PACKET_SIZE, g_param_spec_uint ("packet-size", "Packet size", "The ASF packets size (bytes)", ASF_MULTIPLE_PAYLOAD_HEADER_SIZE + 1, G_MAXUINT32, DEFAULT_PACKET_SIZE, G_PARAM_READWRITE | G_PARAM_CONSTRUCT)); g_object_class_install_property (gobject_class, PROP_PREROLL, g_param_spec_uint64 ("preroll", "Preroll", "The preroll time (milisecs)", 0, G_MAXUINT64, DEFAULT_PREROLL, G_PARAM_READWRITE | G_PARAM_CONSTRUCT)); g_object_class_install_property (gobject_class, PROP_MERGE_STREAM_TAGS, g_param_spec_boolean ("merge-stream-tags", "Merge Stream Tags", "If the stream metadata (received as events in the sink) should be " "merged to the main file metadata.", DEFAULT_MERGE_STREAM_TAGS, G_PARAM_READWRITE | G_PARAM_CONSTRUCT)); g_object_class_install_property (gobject_class, PROP_PADDING, g_param_spec_uint64 ("padding", "Padding", "Size of the padding object to be added to the end of the header. " "If this less than 24 (the smaller size of an ASF object), " "no padding is added.", 0, G_MAXUINT64, DEFAULT_PADDING, G_PARAM_READWRITE | G_PARAM_CONSTRUCT)); g_object_class_install_property (gobject_class, PROP_IS_LIVE, g_param_spec_boolean ("is-live", "Is Live (deprecated)", "Deprecated in 0.10.20, use 'streamable' instead", DEFAULT_STREAMABLE, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, PROP_STREAMABLE, g_param_spec_boolean ("streamable", "Streamable", "If set to true, the output should be as if it is to be streamed " "and hence no indexes written or duration written.", DEFAULT_STREAMABLE, G_PARAM_READWRITE | G_PARAM_CONSTRUCT)); gstelement_class->request_new_pad = GST_DEBUG_FUNCPTR (gst_asf_mux_request_new_pad); gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_asf_mux_change_state); } static void gst_asf_mux_init (GstAsfMux * asfmux) { GstCaps *caps; asfmux->srcpad = gst_pad_new_from_static_template (&src_factory, "src"); caps = gst_caps_copy (gst_pad_get_pad_template_caps (asfmux->srcpad)); gst_pad_set_caps (asfmux->srcpad, caps); gst_caps_unref (caps); gst_pad_use_fixed_caps (asfmux->srcpad); gst_element_add_pad (GST_ELEMENT (asfmux), asfmux->srcpad); asfmux->collect = gst_collect_pads_new (); gst_collect_pads_set_function (asfmux->collect, (GstCollectPadsFunction) GST_DEBUG_FUNCPTR (gst_asf_mux_collected), asfmux); asfmux->payloads = NULL; asfmux->prop_packet_size = DEFAULT_PACKET_SIZE; asfmux->prop_preroll = DEFAULT_PREROLL; asfmux->prop_merge_stream_tags = DEFAULT_MERGE_STREAM_TAGS; asfmux->prop_padding = DEFAULT_PADDING; asfmux->prop_streamable = DEFAULT_STREAMABLE; gst_asf_mux_reset (asfmux); } static gboolean gst_asf_mux_sink_event (GstPad * pad, GstEvent * event) { gboolean ret; GstAsfMux *asfmux; GstAsfPad *asfpad = (GstAsfPad *) gst_pad_get_element_private (pad); asfmux = GST_ASF_MUX_CAST (gst_pad_get_parent (pad)); switch (GST_EVENT_TYPE (event)) { case GST_EVENT_TAG:{ GST_DEBUG_OBJECT (asfmux, "received tag event"); /* we discard tag events that come after we started * writing the headers, because tags are to be in * the headers */ if (asfmux->state == GST_ASF_MUX_STATE_NONE) { GstTagList *list = NULL; gst_event_parse_tag (event, &list); if (asfmux->merge_stream_tags) { GstTagSetter *setter = GST_TAG_SETTER (asfmux); const GstTagMergeMode mode = gst_tag_setter_get_tag_merge_mode (setter); gst_tag_setter_merge_tags (setter, list, mode); } else { if (asfpad->taglist == NULL) { asfpad->taglist = gst_tag_list_new (); } gst_tag_list_insert (asfpad->taglist, list, GST_TAG_MERGE_REPLACE); } } break; } default: break; } ret = asfmux->collect_event (pad, event); gst_object_unref (asfmux); return ret; } /** * gst_asf_mux_push_buffer: * @asfmux: #GstAsfMux that should push the buffer * @buf: #GstBuffer to be pushed * * Pushes a buffer downstream and adds its size to the total file size * * Returns: the result of #gst_pad_push on the buffer */ static GstFlowReturn gst_asf_mux_push_buffer (GstAsfMux * asfmux, GstBuffer * buf) { GstFlowReturn ret; gst_buffer_set_caps (buf, GST_PAD_CAPS (asfmux->srcpad)); ret = gst_pad_push (asfmux->srcpad, buf); if (ret == GST_FLOW_OK) asfmux->file_size += GST_BUFFER_SIZE (buf); return ret; } /** * content_description_calc_size_for_tag: * @taglist: the #GstTagList that contains the tag * @tag: the tag's name * @user_data: a #GstAsfTags struct for putting the results * * Function that has the #GstTagForEach signature and * is used to calculate the size in bytes for each tag * that can be contained in asf's content description object * and extended content description object. This size is added * to the total size for each of that objects in the #GstAsfTags * struct passed in the user_data pointer. */ static void content_description_calc_size_for_tag (const GstTagList * taglist, const gchar * tag, gpointer user_data) { const gchar *asftag = gst_asf_get_asf_tag (tag); GValue value = { 0 }; guint type; GstAsfTags *asftags = (GstAsfTags *) user_data; guint content_size; if (asftag == NULL) return; if (!gst_tag_list_copy_value (&value, taglist, tag)) { return; } type = gst_asf_get_tag_field_type (&value); switch (type) { case ASF_TAG_TYPE_UNICODE_STR: { const gchar *text; text = g_value_get_string (&value); /* +1 -> because of the \0 at the end * 2* -> because we have uft8, and asf demands utf16 */ content_size = 2 * (1 + g_utf8_strlen (text, -1)); if (gst_asf_tag_present_in_content_description (tag)) { asftags->cont_desc_size += content_size; } } break; case ASF_TAG_TYPE_DWORD: content_size = 4; break; default: GST_WARNING ("Unhandled asf tag field type %u for tag %s", type, tag); g_value_reset (&value); return; } if (asftag) { /* size of the tag content in utf16 + * size of the tag name + * 3 uint16 (size of the tag name string, * size of the tag content string and * type of content */ asftags->ext_cont_desc_size += content_size + (g_utf8_strlen (asftag, -1) + 1) * 2 + 6; } gst_tag_list_add_value (asftags->tags, GST_TAG_MERGE_REPLACE, tag, &value); g_value_reset (&value); } /* FIXME * it is awful to keep track of the size here * and get the same tags in the writing function */ /** * gst_asf_mux_get_content_description_tags: * @asfmux: #GstAsfMux to have its tags proccessed * @asftags: #GstAsfTags to hold the results * * Inspects the tags received by the GstTagSetter interface * or possibly by sink tag events and calculates the total * size needed for the default and extended content description objects. * This results and a copy of the #GstTagList * are stored in the #GstAsfTags. We store a copy so that * the sizes estimated here mantain the same until they are * written to the asf file. */ static void gst_asf_mux_get_content_description_tags (GstAsfMux * asfmux, GstAsfTags * asftags) { const GstTagList *tags; GstTagList *taglist = NULL; tags = gst_tag_setter_get_tag_list (GST_TAG_SETTER (asfmux)); if (tags && !gst_tag_list_is_empty (tags)) { if (asftags->tags != NULL) { gst_tag_list_free (asftags->tags); } asftags->tags = gst_tag_list_new (); asftags->cont_desc_size = 0; asftags->ext_cont_desc_size = 0; taglist = asftags->tags; GST_DEBUG_OBJECT (asfmux, "Processing tags"); gst_tag_list_foreach (tags, content_description_calc_size_for_tag, asftags); } else { GST_DEBUG_OBJECT (asfmux, "No tags received"); } if (asftags->cont_desc_size > 0) { asftags->cont_desc_size += ASF_CONTENT_DESCRIPTION_OBJECT_SIZE; } if (asftags->ext_cont_desc_size > 0) { asftags->ext_cont_desc_size += ASF_EXT_CONTENT_DESCRIPTION_OBJECT_SIZE; } } /** * add_metadata_tag_size: * @taglist: #GstTagList * @tag: tag name * @user_data: pointer to a guint to store the result * * GstTagForeachFunc implementation that accounts the size of * each tag in the taglist and adds them to the guint pointed * by the user_data */ static void add_metadata_tag_size (const GstTagList * taglist, const gchar * tag, gpointer user_data) { const gchar *asftag = gst_asf_get_asf_tag (tag); GValue value = { 0 }; guint type; guint content_size; guint *total_size = (guint *) user_data; if (asftag == NULL) return; if (!gst_tag_list_copy_value (&value, taglist, tag)) { return; } type = gst_asf_get_tag_field_type (&value); switch (type) { case ASF_TAG_TYPE_UNICODE_STR: { const gchar *text; text = g_value_get_string (&value); /* +1 -> because of the \0 at the end * 2* -> because we have uft8, and asf demands utf16 */ content_size = 2 * (1 + g_utf8_strlen (text, -1)); } break; case ASF_TAG_TYPE_DWORD: content_size = 4; break; default: GST_WARNING ("Unhandled asf tag field type %u for tag %s", type, tag); g_value_reset (&value); return; } /* size of reserved (2) + * size of stream number (2) + * size of the tag content in utf16 + * size of the tag name + * 2 uint16 (size of the tag name string and type of content) + * 1 uint32 (size of the data) */ *total_size += 4 + content_size + (g_utf8_strlen (asftag, -1) + 1) * 2 + 4 + 4; g_value_reset (&value); } /** * gst_asf_mux_get_metadata_object_size: * @asfmux: #GstAsfMux * @asfpad: pad for which the metadata object size should be calculated * * Calculates the size of the metadata object for the tags of the stream * handled by the asfpad in the parameter * * Returns: The size calculated */ static guint gst_asf_mux_get_metadata_object_size (GstAsfMux * asfmux, GstAsfPad * asfpad) { guint size = ASF_METADATA_OBJECT_SIZE; if (asfpad->taglist == NULL || gst_tag_list_is_empty (asfpad->taglist)) return 0; gst_tag_list_foreach (asfpad->taglist, add_metadata_tag_size, &size); return size; } /** * gst_asf_mux_get_headers_size: * @asfmux: #GstAsfMux * * Calculates the size of the headers of the asf stream * to be generated by this #GstAsfMux. * Its used for determining the size of the buffer to allocate * to exactly fit the headers in. * Padding and metadata objects sizes are not included. * * Returns: the calculated size */ static guint gst_asf_mux_get_headers_size (GstAsfMux * asfmux) { GSList *walk; gint stream_num = 0; guint size = ASF_HEADER_OBJECT_SIZE + ASF_FILE_PROPERTIES_OBJECT_SIZE + ASF_HEADER_EXTENSION_OBJECT_SIZE; /* per stream data */ for (walk = asfmux->collect->data; walk; walk = g_slist_next (walk)) { GstAsfPad *asfpad = (GstAsfPad *) walk->data; if (asfpad->is_audio) size += ASF_AUDIO_SPECIFIC_DATA_SIZE; else size += ASF_VIDEO_SPECIFIC_DATA_SIZE; if (asfpad->codec_data) size += GST_BUFFER_SIZE (asfpad->codec_data); stream_num++; } size += stream_num * (ASF_STREAM_PROPERTIES_OBJECT_SIZE + ASF_EXTENDED_STREAM_PROPERTIES_OBJECT_SIZE); return size; } /** * gst_asf_mux_write_header_object: * @asfmux: * @buf: pointer to the data pointer * @size: size of the header object * @child_objects: number of children objects inside the main header object * * Writes the main asf header object start. The buffer pointer * is incremented to the next writing position. */ static void gst_asf_mux_write_header_object (GstAsfMux * asfmux, guint8 ** buf, guint64 size, guint32 child_objects) { gst_asf_put_guid (*buf, guids[ASF_HEADER_OBJECT_INDEX]); GST_WRITE_UINT64_LE (*buf + 16, size); /* object size */ GST_WRITE_UINT32_LE (*buf + 24, child_objects); /* # of child objects */ GST_WRITE_UINT8 (*buf + 28, 0x01); /* reserved */ GST_WRITE_UINT8 (*buf + 29, 0x02); /* reserved */ *buf += ASF_HEADER_OBJECT_SIZE; } /** * gst_asf_mux_write_file_properties: * @asfmux: * @buf: pointer to the data pointer * * Writes the file properties object to the buffer. The buffer pointer * is incremented to the next writing position. */ static void gst_asf_mux_write_file_properties (GstAsfMux * asfmux, guint8 ** buf) { gst_asf_put_guid (*buf, guids[ASF_FILE_PROPERTIES_OBJECT_INDEX]); GST_WRITE_UINT64_LE (*buf + 16, ASF_FILE_PROPERTIES_OBJECT_SIZE); /* object size */ gst_asf_put_guid (*buf + 24, asfmux->file_id); GST_WRITE_UINT64_LE (*buf + 40, 0); /* file size - needs update */ gst_asf_put_time (*buf + 48, gst_asf_get_current_time ()); /* creation time */ GST_WRITE_UINT64_LE (*buf + 56, 0); /* data packets - needs update */ GST_WRITE_UINT64_LE (*buf + 64, 0); /* play duration - needs update */ GST_WRITE_UINT64_LE (*buf + 72, 0); /* send duration - needs update */ GST_WRITE_UINT64_LE (*buf + 80, asfmux->preroll); /* preroll */ GST_WRITE_UINT32_LE (*buf + 88, 0x1); /* flags - broadcast on */ GST_WRITE_UINT32_LE (*buf + 92, asfmux->packet_size); /* minimum data packet size */ GST_WRITE_UINT32_LE (*buf + 96, asfmux->packet_size); /* maximum data packet size */ GST_WRITE_UINT32_LE (*buf + 100, 0); /* maximum bitrate TODO */ *buf += ASF_FILE_PROPERTIES_OBJECT_SIZE; } /** * gst_asf_mux_write_stream_properties: * @asfmux: * @buf: pointer to the data pointer * @asfpad: Pad that handles the stream * * Writes the stream properties object in the buffer * for the stream handled by the #GstAsfPad passed. * The pointer is incremented to the next writing position */ static void gst_asf_mux_write_stream_properties (GstAsfMux * asfmux, guint8 ** buf, GstAsfPad * asfpad) { guint32 codec_data_length = 0; guint32 media_specific_data_length = 0; guint16 flags = 0; /* codec specific data length */ if (asfpad->codec_data) codec_data_length = GST_BUFFER_SIZE (asfpad->codec_data); if (asfpad->is_audio) media_specific_data_length = ASF_AUDIO_SPECIFIC_DATA_SIZE; else media_specific_data_length = ASF_VIDEO_SPECIFIC_DATA_SIZE; GST_DEBUG_OBJECT (asfmux, "Stream %" G_GUINT16_FORMAT " codec data length: %" G_GUINT32_FORMAT ", media specific data length: %" G_GUINT32_FORMAT, (guint16) asfpad->stream_number, codec_data_length, media_specific_data_length); gst_asf_put_guid (*buf, guids[ASF_STREAM_PROPERTIES_OBJECT_INDEX]); GST_WRITE_UINT64_LE (*buf + 16, ASF_STREAM_PROPERTIES_OBJECT_SIZE + codec_data_length + media_specific_data_length); /* object size */ /* stream type */ if (asfpad->is_audio) gst_asf_put_guid (*buf + 24, guids[ASF_AUDIO_MEDIA_INDEX]); else gst_asf_put_guid (*buf + 24, guids[ASF_VIDEO_MEDIA_INDEX]); /* error correction */ if (asfpad->is_audio) { gst_asf_put_guid (*buf + 40, guids[ASF_NO_ERROR_CORRECTION_INDEX]); } else { gst_asf_put_guid (*buf + 40, guids[ASF_NO_ERROR_CORRECTION_INDEX]); } GST_WRITE_UINT64_LE (*buf + 56, 0); /* time offset */ GST_WRITE_UINT32_LE (*buf + 64, codec_data_length + media_specific_data_length); /* type specific data length */ GST_WRITE_UINT32_LE (*buf + 68, 0); /* error correction data length */ flags = (asfpad->stream_number & 0x7F); GST_WRITE_UINT16_LE (*buf + 72, flags); GST_WRITE_UINT32_LE (*buf + 74, 0); /* reserved */ *buf += ASF_STREAM_PROPERTIES_OBJECT_SIZE; /* audio specific data */ if (asfpad->is_audio) { GstAsfAudioPad *audiopad = (GstAsfAudioPad *) asfpad; GST_WRITE_UINT16_LE (*buf, audiopad->audioinfo.format); GST_WRITE_UINT16_LE (*buf + 2, audiopad->audioinfo.channels); GST_WRITE_UINT32_LE (*buf + 4, audiopad->audioinfo.rate); GST_WRITE_UINT32_LE (*buf + 8, audiopad->audioinfo.av_bps); GST_WRITE_UINT16_LE (*buf + 12, audiopad->audioinfo.blockalign); GST_WRITE_UINT16_LE (*buf + 14, audiopad->audioinfo.size); GST_WRITE_UINT16_LE (*buf + 16, codec_data_length); GST_DEBUG_OBJECT (asfmux, "wave formatex values: codec_id=%" G_GUINT16_FORMAT ", channels=%" G_GUINT16_FORMAT ", rate=%" G_GUINT32_FORMAT ", bytes_per_sec=%" G_GUINT32_FORMAT ", block_alignment=%" G_GUINT16_FORMAT ", bits_per_sample=%" G_GUINT16_FORMAT ", codec_data_length=%" G_GUINT16_FORMAT, audiopad->audioinfo.format, audiopad->audioinfo.channels, audiopad->audioinfo.rate, audiopad->audioinfo.av_bps, audiopad->audioinfo.blockalign, audiopad->audioinfo.size, codec_data_length); *buf += ASF_AUDIO_SPECIFIC_DATA_SIZE; } else { GstAsfVideoPad *videopad = (GstAsfVideoPad *) asfpad; GST_WRITE_UINT32_LE (*buf, (guint32) videopad->vidinfo.width); GST_WRITE_UINT32_LE (*buf + 4, (guint32) videopad->vidinfo.height); GST_WRITE_UINT8 (*buf + 8, 2); /* the BITMAPINFOHEADER size + codec_data size */ GST_WRITE_UINT16_LE (*buf + 9, ASF_VIDEO_SPECIFIC_DATA_SIZE + codec_data_length - 11); /* BITMAPINFOHEADER */ GST_WRITE_UINT32_LE (*buf + 11, ASF_VIDEO_SPECIFIC_DATA_SIZE + codec_data_length - 11); gst_asf_put_i32 (*buf + 15, videopad->vidinfo.width); gst_asf_put_i32 (*buf + 19, videopad->vidinfo.height); GST_WRITE_UINT16_LE (*buf + 23, 1); /* reserved */ GST_WRITE_UINT16_LE (*buf + 25, videopad->vidinfo.bit_cnt); GST_WRITE_UINT32_LE (*buf + 27, videopad->vidinfo.compression); GST_WRITE_UINT32_LE (*buf + 31, videopad->vidinfo.width * videopad->vidinfo.height * videopad->vidinfo.bit_cnt); GST_WRITE_UINT32_LE (*buf + 35, videopad->vidinfo.xpels_meter); GST_WRITE_UINT32_LE (*buf + 39, videopad->vidinfo.ypels_meter); GST_WRITE_UINT32_LE (*buf + 43, videopad->vidinfo.num_colors); GST_WRITE_UINT32_LE (*buf + 47, videopad->vidinfo.imp_colors); *buf += ASF_VIDEO_SPECIFIC_DATA_SIZE; } if (codec_data_length > 0) memcpy (*buf, GST_BUFFER_DATA (asfpad->codec_data), codec_data_length); *buf += codec_data_length; } /** * gst_asf_mux_write_header_extension: * @asfmux: * @buf: pointer to the buffer pointer * @extension_size: size of the extensions * * Writes the header of the header extension object. The buffer pointer * is incremented to the next writing position (the header extension object * childs should be writen from that point) */ static void gst_asf_mux_write_header_extension (GstAsfMux * asfmux, guint8 ** buf, guint64 extension_size) { gst_asf_put_guid (*buf, guids[ASF_HEADER_EXTENSION_OBJECT_INDEX]); GST_WRITE_UINT64_LE (*buf + 16, ASF_HEADER_EXTENSION_OBJECT_SIZE + extension_size); /* object size */ gst_asf_put_guid (*buf + 24, guids[ASF_RESERVED_1_INDEX]); /* reserved */ GST_WRITE_UINT16_LE (*buf + 40, 6); /* reserved */ GST_WRITE_UINT32_LE (*buf + 42, extension_size); /* header extension data size */ *buf += ASF_HEADER_EXTENSION_OBJECT_SIZE; } /** * gst_asf_mux_write_extended_stream_properties: * @asfmux: * @buf: pointer to the buffer pointer * @asfpad: Pad that handles the stream of the properties to be writen * * Writes the extended stream properties object (that is part of the * header extension objects) for the stream handled by asfpad */ static void gst_asf_mux_write_extended_stream_properties (GstAsfMux * asfmux, guint8 ** buf, GstAsfPad * asfpad) { gst_asf_put_guid (*buf, guids[ASF_EXTENDED_STREAM_PROPERTIES_OBJECT_INDEX]); GST_WRITE_UINT64_LE (*buf + 16, ASF_EXTENDED_STREAM_PROPERTIES_OBJECT_SIZE); GST_WRITE_UINT64_LE (*buf + 24, 0); /* start time */ GST_WRITE_UINT64_LE (*buf + 32, 0); /* end time */ GST_WRITE_UINT32_LE (*buf + 40, asfpad->bitrate); /* bitrate */ GST_WRITE_UINT32_LE (*buf + 44, 0); /* buffer size */ GST_WRITE_UINT32_LE (*buf + 48, 0); /* initial buffer fullness */ GST_WRITE_UINT32_LE (*buf + 52, asfpad->bitrate); /* alternate data bitrate */ GST_WRITE_UINT32_LE (*buf + 56, 0); /* alternate buffer size */ GST_WRITE_UINT32_LE (*buf + 60, 0); /* alternate initial buffer fullness */ GST_WRITE_UINT32_LE (*buf + 64, 0); /* maximum object size */ /* flags */ if (asfpad->is_audio) { /* TODO check if audio is seekable */ GST_WRITE_UINT32_LE (*buf + 68, 0x0); } else { /* video has indexes, so it is seekable unless we are streaming */ if (asfmux->prop_streamable) GST_WRITE_UINT32_LE (*buf + 68, 0x0); else GST_WRITE_UINT32_LE (*buf + 68, 0x2); } GST_WRITE_UINT16_LE (*buf + 72, asfpad->stream_number); GST_WRITE_UINT16_LE (*buf + 74, 0); /* language index */ GST_WRITE_UINT64_LE (*buf + 76, 0); /* avg time per frame */ GST_WRITE_UINT16_LE (*buf + 84, 0); /* stream name count */ GST_WRITE_UINT16_LE (*buf + 86, 0); /* payload extension count */ *buf += ASF_EXTENDED_STREAM_PROPERTIES_OBJECT_SIZE; } /** * gst_asf_mux_write_string_with_size: * @asfmux: * @size_buf: pointer to the memory position to write the size of the string * @str_buf: pointer to the memory position to write the string * @str: the string to be writen (in UTF-8) * @use32: if the string size should be writen with 32 bits (if true) * or with 16 (if false) * * Writes a string with its size as it is needed in many asf objects. * The size is writen to size_buf as a WORD field if use32 is false, and * as a DWORD if use32 is true. The string is writen to str_buf in UTF16-LE. * The string should be passed in UTF-8. * * The string size in UTF16-LE is returned. */ static guint64 gst_asf_mux_write_string_with_size (GstAsfMux * asfmux, guint8 * size_buf, guint8 * str_buf, const gchar * str, gboolean use32) { GError *error = NULL; gsize str_size = 0; gchar *str_utf16 = NULL; GST_LOG_OBJECT (asfmux, "Writing extended content description string: " "%s", str); /* * Covert the string to utf16 * Also force the last bytes to null terminated, * tags were with extra weird characters without it. */ str_utf16 = g_convert (str, -1, "UTF-16LE", "UTF-8", NULL, &str_size, &error); /* sum up the null terminating char */ str_size += 2; if (use32) GST_WRITE_UINT32_LE (size_buf, str_size); else GST_WRITE_UINT16_LE (size_buf, str_size); if (error) { GST_WARNING_OBJECT (asfmux, "Error converting string " "to UTF-16: %s - %s", str, error->message); g_free (error); memset (str_buf, 0, str_size); } else { /* HACK: g_convert seems to add only a single byte null char to * the end of the stream, we force the second one */ memcpy (str_buf, str_utf16, str_size - 1); str_buf[str_size - 1] = 0; } g_free (str_utf16); return str_size; } /** * gst_asf_mux_write_content_description_entry: * @asfmux: * @tags: * @tagname: * @size_buf: * @data_buf: * * Checks if a string tag with tagname exists in the taglist. If it * exists it is writen as an UTF-16LE to data_buf and its size in bytes * is writen to size_buf. It is used for writing content description * object fields. * * Returns: the size of the string */ static guint16 gst_asf_mux_write_content_description_entry (GstAsfMux * asfmux, const GstTagList * tags, const gchar * tagname, guint8 * size_buf, guint8 * data_buf) { gchar *text = NULL; guint16 text_size = 0; if (gst_tag_list_get_string (tags, tagname, &text)) { text_size = gst_asf_mux_write_string_with_size (asfmux, size_buf, data_buf, text, FALSE); g_free (text); } else { GST_WRITE_UINT16_LE (size_buf, 0); } return text_size; } static guint64 gst_asf_mux_write_ext_content_description_dword_entry (GstAsfMux * asfmux, guint8 * buf, const gchar * asf_tag, const guint32 value) { guint64 tag_size; GST_DEBUG_OBJECT (asfmux, "Writing extended content description tag: " "%s (%u)", asf_tag, value); tag_size = gst_asf_mux_write_string_with_size (asfmux, buf, buf + 2, asf_tag, FALSE); buf += tag_size + 2; GST_WRITE_UINT16_LE (buf, ASF_TAG_TYPE_DWORD); GST_WRITE_UINT16_LE (buf + 2, 4); GST_WRITE_UINT32_LE (buf + 4, value); /* tagsize -> string size * 2 -> string size field size * 4 -> dword entry * 4 -> type of entry + entry size */ return tag_size + 2 + 4 + 4; } static guint64 gst_asf_mux_write_ext_content_description_string_entry (GstAsfMux * asfmux, guint8 * buf, const gchar * asf_tag, const gchar * text) { guint64 tag_size = 0; guint64 text_size = 0; GST_DEBUG_OBJECT (asfmux, "Writing extended content description tag: " "%s (%s)", asf_tag, text); tag_size = gst_asf_mux_write_string_with_size (asfmux, buf, buf + 2, asf_tag, FALSE); GST_WRITE_UINT16_LE (buf + tag_size + 2, ASF_TAG_TYPE_UNICODE_STR); buf += tag_size + 2 + 2; text_size = gst_asf_mux_write_string_with_size (asfmux, buf, buf + 2, text, FALSE); /* the size of the strings in utf16-le plus the 3 WORD fields */ return tag_size + text_size + 6; } static void gst_asf_mux_write_content_description (GstAsfMux * asfmux, guint8 ** buf, const GstTagList * tags) { guint8 *values = (*buf) + ASF_CONTENT_DESCRIPTION_OBJECT_SIZE; guint64 size = 0; GST_DEBUG_OBJECT (asfmux, "Writing content description object"); gst_asf_put_guid (*buf, guids[ASF_CONTENT_DESCRIPTION_INDEX]); values += gst_asf_mux_write_content_description_entry (asfmux, tags, GST_TAG_TITLE, *buf + 24, values); values += gst_asf_mux_write_content_description_entry (asfmux, tags, GST_TAG_ARTIST, *buf + 26, values); values += gst_asf_mux_write_content_description_entry (asfmux, tags, GST_TAG_COPYRIGHT, *buf + 28, values); values += gst_asf_mux_write_content_description_entry (asfmux, tags, GST_TAG_DESCRIPTION, *buf + 30, values); /* rating is currently not present in gstreamer tags, so we put 0 */ GST_WRITE_UINT16_LE (*buf + 32, 0); size += values - *buf; GST_WRITE_UINT64_LE (*buf + 16, size); *buf += size; } static void write_ext_content_description_tag (const GstTagList * taglist, const gchar * tag, gpointer user_data) { const gchar *asftag = gst_asf_get_asf_tag (tag); GValue value = { 0 }; guint type; GstAsfExtContDescData *data = (GstAsfExtContDescData *) user_data; if (asftag == NULL) return; if (!gst_tag_list_copy_value (&value, taglist, tag)) { return; } type = gst_asf_get_tag_field_type (&value); switch (type) { case ASF_TAG_TYPE_UNICODE_STR: { const gchar *text; text = g_value_get_string (&value); data->size += gst_asf_mux_write_ext_content_description_string_entry (data->asfmux, data->buf + data->size, asftag, text); } break; case ASF_TAG_TYPE_DWORD: { guint num = g_value_get_uint (&value); data->size += gst_asf_mux_write_ext_content_description_dword_entry (data->asfmux, data->buf + data->size, asftag, num); } break; default: GST_WARNING_OBJECT (data->asfmux, "Unhandled asf tag field type %u for tag %s", type, tag); g_value_reset (&value); return; } data->count++; g_value_reset (&value); } static void gst_asf_mux_write_ext_content_description (GstAsfMux * asfmux, guint8 ** buf, GstTagList * tags) { GstAsfExtContDescData extContDesc; extContDesc.asfmux = asfmux; extContDesc.buf = *buf; extContDesc.count = 0; extContDesc.size = ASF_EXT_CONTENT_DESCRIPTION_OBJECT_SIZE; GST_DEBUG_OBJECT (asfmux, "Writing extended content description object"); gst_asf_put_guid (*buf, guids[ASF_EXT_CONTENT_DESCRIPTION_INDEX]); gst_tag_list_foreach (tags, write_ext_content_description_tag, &extContDesc); GST_WRITE_UINT64_LE (*buf + 16, extContDesc.size); GST_WRITE_UINT16_LE (*buf + 24, extContDesc.count); *buf += extContDesc.size; } static void write_metadata_tag (const GstTagList * taglist, const gchar * tag, gpointer user_data) { const gchar *asftag = gst_asf_get_asf_tag (tag); GValue value = { 0 }; guint type; GstAsfMetadataObjData *data = (GstAsfMetadataObjData *) user_data; guint16 tag_size; guint32 content_size; if (asftag == NULL) return; if (!gst_tag_list_copy_value (&value, taglist, tag)) { return; } type = gst_asf_get_tag_field_type (&value); switch (type) { case ASF_TAG_TYPE_UNICODE_STR: { const gchar *text; text = g_value_get_string (&value); GST_WRITE_UINT16_LE (data->buf + data->size, 0); GST_WRITE_UINT16_LE (data->buf + data->size + 2, data->stream_num); data->size += 4; tag_size = gst_asf_mux_write_string_with_size (data->asfmux, data->buf + data->size, data->buf + data->size + 8, asftag, FALSE); data->size += 2; GST_WRITE_UINT16_LE (data->buf + data->size, type); data->size += 2; content_size = gst_asf_mux_write_string_with_size (data->asfmux, data->buf + data->size, data->buf + data->size + tag_size + 4, text, TRUE); data->size += tag_size + content_size + 4; } break; case ASF_TAG_TYPE_DWORD: { guint num = g_value_get_uint (&value); GST_WRITE_UINT16_LE (data->buf + data->size, 0); GST_WRITE_UINT16_LE (data->buf + data->size + 2, data->stream_num); data->size += 4; tag_size = gst_asf_mux_write_string_with_size (data->asfmux, data->buf + data->size, data->buf + data->size + 8, asftag, FALSE); data->size += 2; GST_WRITE_UINT16_LE (data->buf + data->size, type); data->size += 2; /* dword length */ GST_WRITE_UINT32_LE (data->buf + data->size, 4); data->size += 4 + tag_size; GST_WRITE_UINT32_LE (data->buf + data->size, num); data->size += 4; } break; default: GST_WARNING_OBJECT (data->asfmux, "Unhandled asf tag field type %u for tag %s", type, tag); g_value_reset (&value); return; } data->count++; g_value_reset (&value); } static void gst_asf_mux_write_metadata_object (GstAsfMux * asfmux, guint8 ** buf, GstAsfPad * asfpad) { GstAsfMetadataObjData metaObjData; metaObjData.asfmux = asfmux; metaObjData.buf = *buf; metaObjData.count = 0; metaObjData.size = ASF_METADATA_OBJECT_SIZE; metaObjData.stream_num = asfpad->stream_number; if (asfpad->taglist == NULL || gst_tag_list_is_empty (asfpad->taglist)) return; GST_DEBUG_OBJECT (asfmux, "Writing metadata object"); gst_asf_put_guid (*buf, guids[ASF_METADATA_OBJECT_INDEX]); gst_tag_list_foreach (asfpad->taglist, write_metadata_tag, &metaObjData); GST_WRITE_UINT64_LE (*buf + 16, metaObjData.size); GST_WRITE_UINT16_LE (*buf + 24, metaObjData.count); *buf += metaObjData.size; } static void gst_asf_mux_write_padding_object (GstAsfMux * asfmux, guint8 ** buf, guint64 padding) { if (padding < ASF_PADDING_OBJECT_SIZE) { return; } GST_DEBUG_OBJECT (asfmux, "Writing padding object of size %" G_GUINT64_FORMAT, padding); gst_asf_put_guid (*buf, guids[ASF_PADDING_OBJECT_INDEX]); GST_WRITE_UINT64_LE (*buf + 16, padding); memset (*buf + 24, 0, padding - ASF_PADDING_OBJECT_SIZE); *buf += padding; } static void gst_asf_mux_write_data_object (GstAsfMux * asfmux, guint8 ** buf) { gst_asf_put_guid (*buf, guids[ASF_DATA_OBJECT_INDEX]); /* Data object size. This is always >= ASF_DATA_OBJECT_SIZE. The standard * specifically accepts the value 0 in live streams, but WMP is not accepting * this while streaming using WMSP, so we default to minimum size also for * live streams. Otherwise this field must be updated later on when we know * the complete stream size. */ GST_WRITE_UINT64_LE (*buf + 16, ASF_DATA_OBJECT_SIZE); gst_asf_put_guid (*buf + 24, asfmux->file_id); GST_WRITE_UINT64_LE (*buf + 40, 0); /* total data packets */ GST_WRITE_UINT16_LE (*buf + 48, 0x0101); /* reserved */ *buf += ASF_DATA_OBJECT_SIZE; } static void gst_asf_mux_put_buffer_in_streamheader (GValue * streamheader, GstBuffer * buffer) { GValue value = { 0 }; GstBuffer *buf; g_value_init (&value, GST_TYPE_BUFFER); buf = gst_buffer_copy (buffer); gst_value_set_buffer (&value, buf); gst_buffer_unref (buf); gst_value_array_append_value (streamheader, &value); g_value_unset (&value); } static guint gst_asf_mux_find_payload_parsing_info_size (GstAsfMux * asfmux) { /* Minimum payload parsing information size is 8 bytes */ guint size = 8; if (asfmux->prop_packet_size > 65535) size += 4; else size += 2; if (asfmux->prop_padding > 65535) size += 4; else size += 2; return size; } /** * gst_asf_mux_start_file: * @asfmux: #GstAsfMux * * Starts the asf file/stream by creating and pushing * the headers downstream. */ static GstFlowReturn gst_asf_mux_start_file (GstAsfMux * asfmux) { GstBuffer *buf = NULL; guint8 *bufdata = NULL; GSList *walk; guint stream_num = g_slist_length (asfmux->collect->data); guint metadata_obj_size = 0; GstAsfTags *asftags; GValue streamheader = { 0 }; GstCaps *caps; GstStructure *structure; guint64 padding = asfmux->prop_padding; if (padding < ASF_PADDING_OBJECT_SIZE) padding = 0; /* from this point we started writing the headers */ GST_INFO_OBJECT (asfmux, "Writing headers"); asfmux->state = GST_ASF_MUX_STATE_HEADERS; /* let downstream know we think in BYTES and expect to do seeking later */ gst_pad_push_event (asfmux->srcpad, gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_BYTES, 0, -1, 0)); gst_asf_generate_file_id (&asfmux->file_id); /* Get the metadata for content description object. * We store our own taglist because it might get changed from now * to the time we actually add its contents to the file, changing * the size of the data we already calculated here. */ asftags = g_new0 (GstAsfTags, 1); gst_asf_mux_get_content_description_tags (asfmux, asftags); /* get the total metadata objects size */ for (walk = asfmux->collect->data; walk; walk = g_slist_next (walk)) { metadata_obj_size += gst_asf_mux_get_metadata_object_size (asfmux, (GstAsfPad *) walk->data); } /* alloc a buffer for all header objects */ buf = gst_buffer_new_and_alloc (gst_asf_mux_get_headers_size (asfmux) + asftags->cont_desc_size + asftags->ext_cont_desc_size + metadata_obj_size + padding + ASF_DATA_OBJECT_SIZE); bufdata = GST_BUFFER_DATA (buf); gst_asf_mux_write_header_object (asfmux, &bufdata, GST_BUFFER_SIZE (buf) - ASF_DATA_OBJECT_SIZE, 2 + stream_num); /* get the position of the file properties object for * updating it in gst_asf_mux_stop_file */ asfmux->file_properties_object_position = bufdata - GST_BUFFER_DATA (buf); gst_asf_mux_write_file_properties (asfmux, &bufdata); for (walk = asfmux->collect->data; walk; walk = g_slist_next (walk)) { gst_asf_mux_write_stream_properties (asfmux, &bufdata, (GstAsfPad *) walk->data); } if (asftags->cont_desc_size) { gst_asf_mux_write_content_description (asfmux, &bufdata, asftags->tags); } if (asftags->ext_cont_desc_size) { gst_asf_mux_write_ext_content_description (asfmux, &bufdata, asftags->tags); } if (asftags) { if (asftags->tags) gst_tag_list_free (asftags->tags); g_free (asftags); } /* writing header extension objects */ gst_asf_mux_write_header_extension (asfmux, &bufdata, stream_num * ASF_EXTENDED_STREAM_PROPERTIES_OBJECT_SIZE + metadata_obj_size); for (walk = asfmux->collect->data; walk; walk = g_slist_next (walk)) { gst_asf_mux_write_extended_stream_properties (asfmux, &bufdata, (GstAsfPad *) walk->data); } for (walk = asfmux->collect->data; walk; walk = g_slist_next (walk)) { gst_asf_mux_write_metadata_object (asfmux, &bufdata, (GstAsfPad *) walk->data); } gst_asf_mux_write_padding_object (asfmux, &bufdata, padding); /* store data object position for later updating some fields */ asfmux->data_object_position = bufdata - GST_BUFFER_DATA (buf); gst_asf_mux_write_data_object (asfmux, &bufdata); /* set streamheader in source pad if 'streamable' */ if (asfmux->prop_streamable) { g_value_init (&streamheader, GST_TYPE_ARRAY); gst_asf_mux_put_buffer_in_streamheader (&streamheader, buf); caps = gst_caps_ref (GST_PAD_CAPS (asfmux->srcpad)); caps = gst_caps_make_writable (caps); structure = gst_caps_get_structure (caps, 0); gst_structure_set_value (structure, "streamheader", &streamheader); gst_pad_set_caps (asfmux->srcpad, caps); GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_IN_CAPS); g_value_unset (&streamheader); gst_caps_unref (caps); } g_assert (bufdata - GST_BUFFER_DATA (buf) == GST_BUFFER_SIZE (buf)); return gst_asf_mux_push_buffer (asfmux, buf); } /** * gst_asf_mux_add_simple_index_entry: * @asfmux: * @videopad: * * Adds a new entry to the simple index of the stream handler by videopad. * This functions doesn't check if the time ellapsed * is larger than the established time interval between entries. The caller * is responsible for verifying this. */ static void gst_asf_mux_add_simple_index_entry (GstAsfMux * asfmux, GstAsfVideoPad * videopad) { SimpleIndexEntry *entry = NULL; GST_DEBUG_OBJECT (asfmux, "Adding new simple index entry " "packet number: %" G_GUINT32_FORMAT ", " "packet count: %" G_GUINT16_FORMAT, videopad->last_keyframe_packet, videopad->last_keyframe_packet_count); entry = g_malloc0 (sizeof (SimpleIndexEntry)); entry->packet_number = videopad->last_keyframe_packet; entry->packet_count = videopad->last_keyframe_packet_count; if (entry->packet_count > videopad->max_keyframe_packet_count) videopad->max_keyframe_packet_count = entry->packet_count; videopad->simple_index = g_slist_append (videopad->simple_index, entry); } /** * gst_asf_mux_send_packet: * @asfmux: * @buf: The asf data packet * * Pushes an asf data packet downstream. The total number * of packets and bytes of the stream are incremented. * * Returns: the result of pushing the buffer downstream */ static GstFlowReturn gst_asf_mux_send_packet (GstAsfMux * asfmux, GstBuffer * buf) { g_assert (GST_BUFFER_SIZE (buf) == asfmux->packet_size); asfmux->total_data_packets++; GST_LOG_OBJECT (asfmux, "Pushing a packet of size %u and timestamp %" G_GUINT64_FORMAT, GST_BUFFER_SIZE (buf), GST_BUFFER_TIMESTAMP (buf)); GST_LOG_OBJECT (asfmux, "Total data packets: %" G_GUINT64_FORMAT, asfmux->total_data_packets); return gst_asf_mux_push_buffer (asfmux, buf); } /** * gst_asf_mux_flush_payloads: * @asfmux: #GstAsfMux to flush the payloads from * * Fills an asf packet with asfmux queued payloads and * pushes it downstream. * * Returns: The result of pushing the packet */ static GstFlowReturn gst_asf_mux_flush_payloads (GstAsfMux * asfmux) { GstBuffer *buf; guint8 payloads_count = 0; /* we only use 6 bits, max is 63 */ guint i; GstClockTime send_ts = GST_CLOCK_TIME_NONE; guint64 size_left; guint8 *data; GSList *walk; GstAsfPad *pad; gboolean has_keyframe; AsfPayload *payload; guint32 payload_size; guint offset; if (asfmux->payloads == NULL) return GST_FLOW_OK; /* nothing to send is ok */ GST_LOG_OBJECT (asfmux, "Flushing payloads"); buf = gst_buffer_new_and_alloc (asfmux->packet_size); memset (GST_BUFFER_DATA (buf), 0, asfmux->packet_size); /* 1 for the multiple payload flags */ data = GST_BUFFER_DATA (buf) + asfmux->payload_parsing_info_size + 1; size_left = asfmux->packet_size - asfmux->payload_parsing_info_size - 1; has_keyframe = FALSE; walk = asfmux->payloads; while (walk && payloads_count < MAX_PAYLOADS_IN_A_PACKET) { payload = (AsfPayload *) walk->data; pad = (GstAsfPad *) payload->pad; payload_size = gst_asf_payload_get_size (payload); if (size_left < payload_size) { break; /* next payload doesn't fit fully */ } if (G_UNLIKELY (!GST_CLOCK_TIME_IS_VALID (send_ts))) { send_ts = GST_BUFFER_TIMESTAMP (payload->data); } /* adding new simple index entry (if needed) */ if (!pad->is_audio && GST_CLOCK_TIME_IS_VALID (GST_BUFFER_TIMESTAMP (payload->data))) { GstAsfVideoPad *videopad = (GstAsfVideoPad *) pad; if (videopad->has_keyframe) { for (; videopad->next_index_time <= ASF_MILI_TO_100NANO (payload->presentation_time); videopad->next_index_time += videopad->time_interval) { gst_asf_mux_add_simple_index_entry (asfmux, videopad); } } } /* serialize our payload */ GST_DEBUG_OBJECT (asfmux, "Serializing payload into packet"); GST_DEBUG_OBJECT (asfmux, "stream number: %d", pad->stream_number & 0x7F); GST_DEBUG_OBJECT (asfmux, "media object number: %d", (gint) payload->media_obj_num); GST_DEBUG_OBJECT (asfmux, "offset into media object: %" G_GUINT16_FORMAT, payload->offset_in_media_obj); GST_DEBUG_OBJECT (asfmux, "media object size: %" G_GUINT32_FORMAT, payload->media_object_size); GST_DEBUG_OBJECT (asfmux, "replicated data length: %d", (gint) payload->replicated_data_length); GST_DEBUG_OBJECT (asfmux, "payload size: %u", GST_BUFFER_SIZE (payload->data)); GST_DEBUG_OBJECT (asfmux, "presentation time: %" G_GUINT32_FORMAT " (%" GST_TIME_FORMAT ")", payload->presentation_time, GST_TIME_ARGS (payload->presentation_time * GST_MSECOND)); GST_DEBUG_OBJECT (asfmux, "keyframe: %s", (payload->stream_number & 0x80 ? "yes" : "no")); GST_DEBUG_OBJECT (asfmux, "buffer timestamp: %" GST_TIME_FORMAT, GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (payload->data))); GST_DEBUG_OBJECT (asfmux, "buffer duration %" GST_TIME_FORMAT, GST_TIME_ARGS (GST_BUFFER_DURATION (payload->data))); gst_asf_put_payload (data, payload); if (!payload->has_packet_info) { payload->has_packet_info = TRUE; payload->packet_number = asfmux->total_data_packets; } GST_DEBUG_OBJECT (asfmux, "packet number: %" G_GUINT32_FORMAT, payload->packet_number); if (ASF_PAYLOAD_IS_KEYFRAME (payload)) { has_keyframe = TRUE; if (!pad->is_audio) { GstAsfVideoPad *videopad = (GstAsfVideoPad *) pad; videopad->last_keyframe_packet = payload->packet_number; videopad->last_keyframe_packet_count = payload->packet_count; videopad->has_keyframe = TRUE; } } /* update our variables */ data += payload_size; size_left -= payload_size; payloads_count++; walk = g_slist_next (walk); } /* remove flushed payloads */ GST_LOG_OBJECT (asfmux, "Freeing already used payloads"); for (i = 0; i < payloads_count; i++) { GSList *aux = g_slist_nth (asfmux->payloads, 0); AsfPayload *payload; g_assert (aux); payload = (AsfPayload *) aux->data; asfmux->payloads = g_slist_remove (asfmux->payloads, payload); asfmux->payload_data_size -= (GST_BUFFER_SIZE (payload->data) + ASF_MULTIPLE_PAYLOAD_HEADER_SIZE); gst_asf_payload_free (payload); } /* check if we can add part of the next payload */ if (asfmux->payloads && size_left > ASF_MULTIPLE_PAYLOAD_HEADER_SIZE) { AsfPayload *payload = (AsfPayload *) g_slist_nth (asfmux->payloads, 0)->data; guint16 bytes_writen; GST_DEBUG_OBJECT (asfmux, "Adding part of a payload to a packet"); if (ASF_PAYLOAD_IS_KEYFRAME (payload)) has_keyframe = TRUE; if (G_UNLIKELY (!GST_CLOCK_TIME_IS_VALID (send_ts))) { send_ts = GST_BUFFER_TIMESTAMP (payload->data); } bytes_writen = gst_asf_put_subpayload (data, payload, size_left); if (!payload->has_packet_info) { payload->has_packet_info = TRUE; payload->packet_number = asfmux->total_data_packets; } asfmux->payload_data_size -= bytes_writen; size_left -= (bytes_writen + ASF_MULTIPLE_PAYLOAD_HEADER_SIZE); payloads_count++; } GST_LOG_OBJECT (asfmux, "Payload data size: %" G_GUINT32_FORMAT, asfmux->payload_data_size); /* fill payload parsing info */ data = GST_BUFFER_DATA (buf); /* flags */ GST_WRITE_UINT8 (data, (0x0 << 7) | /* no error correction */ (ASF_FIELD_TYPE_DWORD << 5) | /* packet length type */ (ASF_FIELD_TYPE_DWORD << 3) | /* padding length type */ (ASF_FIELD_TYPE_NONE << 1) | /* sequence type type */ 0x1); /* multiple payloads */ offset = 1; /* property flags - according to the spec, this should not change */ GST_WRITE_UINT8 (data + offset, (ASF_FIELD_TYPE_BYTE << 6) | /* stream number length type */ (ASF_FIELD_TYPE_BYTE << 4) | /* media obj number length type */ (ASF_FIELD_TYPE_DWORD << 2) | /* offset info media object length type */ (ASF_FIELD_TYPE_BYTE)); /* replicated data length type */ offset++; /* Due to a limitation in WMP while streaming through WMSP we reduce the * packet & padding size to 16bit if theay are <= 65535 bytes */ if (asfmux->packet_size > 65535) { GST_WRITE_UINT32_LE (data + offset, asfmux->packet_size - size_left); offset += 4; } else { *data &= ~(ASF_FIELD_TYPE_MASK << 5); *data |= ASF_FIELD_TYPE_WORD << 5; GST_WRITE_UINT16_LE (data + offset, asfmux->packet_size - size_left); offset += 2; } if (asfmux->prop_padding > 65535) { GST_WRITE_UINT32_LE (data + offset, size_left); offset += 4; } else { *data &= ~(ASF_FIELD_TYPE_MASK << 3); *data |= ASF_FIELD_TYPE_WORD << 3; GST_WRITE_UINT16_LE (data + offset, size_left); offset += 2; } /* packet send time */ if (GST_CLOCK_TIME_IS_VALID (send_ts)) { GST_WRITE_UINT32_LE (data + offset, (send_ts / GST_MSECOND)); GST_BUFFER_TIMESTAMP (buf) = send_ts; } offset += 4; /* packet duration */ GST_WRITE_UINT16_LE (data + offset, 0); /* FIXME send duration needs to be estimated */ offset += 2; /* multiple payloads flags */ GST_WRITE_UINT8 (data + offset, 0x2 << 6 | payloads_count); if (payloads_count == 0) { GST_WARNING_OBJECT (asfmux, "Sending packet without any payload"); } asfmux->data_object_size += GST_BUFFER_SIZE (buf); if (!has_keyframe) GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT); return gst_asf_mux_send_packet (asfmux, buf); } /** * stream_number_compare: * @a: a #GstAsfPad * @b: another #GstAsfPad * * Utility function to compare #GstAsfPad by their stream numbers * * Returns: The difference between their stream numbers */ static gint stream_number_compare (gconstpointer a, gconstpointer b) { GstAsfPad *pad_a = (GstAsfPad *) a; GstAsfPad *pad_b = (GstAsfPad *) b; return pad_b->stream_number - pad_a->stream_number; } static GstFlowReturn gst_asf_mux_push_simple_index (GstAsfMux * asfmux, GstAsfVideoPad * pad) { guint64 object_size = ASF_SIMPLE_INDEX_OBJECT_SIZE + g_slist_length (pad->simple_index) * ASF_SIMPLE_INDEX_ENTRY_SIZE; GstBuffer *buf = gst_buffer_new_and_alloc (object_size); GSList *walk; guint8 *data = GST_BUFFER_DATA (buf); guint32 entries_count = g_slist_length (pad->simple_index); gst_asf_put_guid (data, guids[ASF_SIMPLE_INDEX_OBJECT_INDEX]); GST_WRITE_UINT64_LE (data + 16, object_size); gst_asf_put_guid (data + 24, asfmux->file_id); GST_WRITE_UINT64_LE (data + 40, pad->time_interval); GST_WRITE_UINT32_LE (data + 48, pad->max_keyframe_packet_count); GST_WRITE_UINT32_LE (data + 52, entries_count); data += ASF_SIMPLE_INDEX_OBJECT_SIZE; GST_DEBUG_OBJECT (asfmux, "Simple index object values - size:%" G_GUINT64_FORMAT ", time interval:%" G_GUINT64_FORMAT ", max packet count:%" G_GUINT32_FORMAT ", entries:%" G_GUINT16_FORMAT, object_size, pad->time_interval, pad->max_keyframe_packet_count, entries_count); for (walk = pad->simple_index; walk; walk = g_slist_next (walk)) { SimpleIndexEntry *entry = (SimpleIndexEntry *) walk->data; GST_DEBUG_OBJECT (asfmux, "Simple index entry: packet_number:%" G_GUINT32_FORMAT " packet_count:%" G_GUINT16_FORMAT, entry->packet_number, entry->packet_count); GST_WRITE_UINT32_LE (data, entry->packet_number); GST_WRITE_UINT16_LE (data + 4, entry->packet_count); data += ASF_SIMPLE_INDEX_ENTRY_SIZE; } GST_DEBUG_OBJECT (asfmux, "Pushing the simple index"); g_assert (data - GST_BUFFER_DATA (buf) == object_size); return gst_asf_mux_push_buffer (asfmux, buf); } static GstFlowReturn gst_asf_mux_write_indexes (GstAsfMux * asfmux) { GSList *ordered_pads; GSList *walker; GstFlowReturn ret = GST_FLOW_OK; /* write simple indexes for video medias */ ordered_pads = g_slist_sort (g_slist_copy (asfmux->collect->data), (GCompareFunc) stream_number_compare); for (walker = ordered_pads; walker; walker = g_slist_next (walker)) { GstAsfPad *pad = (GstAsfPad *) walker->data; if (!pad->is_audio) { ret = gst_asf_mux_push_simple_index (asfmux, (GstAsfVideoPad *) pad); if (ret != GST_FLOW_OK) { GST_ERROR_OBJECT (asfmux, "Failed to write simple index for stream %" G_GUINT16_FORMAT, (guint16) pad->stream_number); goto cleanup_and_return; } } } cleanup_and_return: g_slist_free (ordered_pads); return ret; } /** * gst_asf_mux_stop_file: * @asfmux: #GstAsfMux * * Finalizes the asf stream by pushing the indexes after * the data object. Also seeks back to the header positions * to rewrite some fields such as the total number of bytes * of the file, or any other that couldn't be predicted/known * back on the header generation. * * Returns: GST_FLOW_OK on success */ static GstFlowReturn gst_asf_mux_stop_file (GstAsfMux * asfmux) { GstEvent *event; GstBuffer *buf; GstFlowReturn ret = GST_FLOW_OK; GSList *walk; GstClockTime play_duration = 0; guint32 bitrate = 0; /* write indexes */ ret = gst_asf_mux_write_indexes (asfmux); if (ret != GST_FLOW_OK) { GST_ERROR_OBJECT (asfmux, "Failed to write indexes"); return ret; } /* find max stream duration and bitrate */ for (walk = asfmux->collect->data; walk; walk = g_slist_next (walk)) { GstAsfPad *pad = (GstAsfPad *) walk->data; bitrate += pad->bitrate; if (pad->play_duration > play_duration) play_duration = pad->play_duration; } /* going back to file properties object to fill in * values we didn't know back then */ GST_DEBUG_OBJECT (asfmux, "Sending new segment to file properties object position"); event = gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_BYTES, asfmux->file_properties_object_position + 40, GST_CLOCK_TIME_NONE, 0); if (!gst_pad_push_event (asfmux->srcpad, event)) { GST_ERROR_OBJECT (asfmux, "Failed to update file properties object"); return GST_FLOW_ERROR; } /* All file properties fields except the first 40 bytes */ buf = gst_buffer_new_and_alloc (ASF_FILE_PROPERTIES_OBJECT_SIZE - 40); GST_WRITE_UINT64_LE (GST_BUFFER_DATA (buf), asfmux->file_size); gst_asf_put_time (GST_BUFFER_DATA (buf) + 8, gst_asf_get_current_time ()); GST_WRITE_UINT64_LE (GST_BUFFER_DATA (buf) + 16, asfmux->total_data_packets); GST_WRITE_UINT64_LE (GST_BUFFER_DATA (buf) + 24, (play_duration / 100) + ASF_MILI_TO_100NANO (asfmux->preroll)); GST_WRITE_UINT64_LE (GST_BUFFER_DATA (buf) + 32, (play_duration / 100)); /* TODO send duration */ /* if play duration is smaller then preroll, player might have problems */ if (asfmux->preroll > play_duration / GST_MSECOND) { GST_ELEMENT_WARNING (asfmux, STREAM, MUX, (_("Generated file has a larger" " preroll time than its streams duration")), ("Preroll time larger than streams duration, " "try setting a smaller preroll value next time")); } GST_WRITE_UINT64_LE (GST_BUFFER_DATA (buf) + 40, asfmux->preroll); GST_WRITE_UINT32_LE (GST_BUFFER_DATA (buf) + 48, 0x2); /* flags - seekable */ GST_WRITE_UINT32_LE (GST_BUFFER_DATA (buf) + 52, asfmux->packet_size); GST_WRITE_UINT32_LE (GST_BUFFER_DATA (buf) + 56, asfmux->packet_size); /* FIXME - we want the max instantaneous bitrate, for vbr streams, we can't * get it this way, this would be the average, right? */ GST_WRITE_UINT32_LE (GST_BUFFER_DATA (buf) + 60, bitrate); /* max bitrate */ /* we don't use gst_asf_mux_push_buffer because we are overwriting * already sent data */ ret = gst_pad_push (asfmux->srcpad, buf); if (ret != GST_FLOW_OK) { GST_ERROR_OBJECT (asfmux, "Failed to update file properties object"); return ret; } GST_DEBUG_OBJECT (asfmux, "Seeking back to data object"); /* seek back to the data object */ event = gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_BYTES, asfmux->data_object_position + 16, GST_CLOCK_TIME_NONE, 0); if (!gst_pad_push_event (asfmux->srcpad, event)) { GST_ERROR_OBJECT (asfmux, "Seek to update data object failed"); return GST_FLOW_ERROR; } buf = gst_buffer_new_and_alloc (32); /* qword+guid+qword */ GST_WRITE_UINT64_LE (GST_BUFFER_DATA (buf), asfmux->data_object_size + ASF_DATA_OBJECT_SIZE); gst_asf_put_guid (GST_BUFFER_DATA (buf) + 8, asfmux->file_id); GST_WRITE_UINT64_LE (GST_BUFFER_DATA (buf) + 24, asfmux->total_data_packets); return gst_pad_push (asfmux->srcpad, buf); } /** * gst_asf_mux_process_buffer: * @asfmux: * @pad: stream of the buffer * @buf: The buffer to be processed * * Processes the buffer by parsing it and * queueing it up as an asf payload for later * being added and pushed inside an asf packet. * * Returns: a #GstFlowReturn */ static GstFlowReturn gst_asf_mux_process_buffer (GstAsfMux * asfmux, GstAsfPad * pad, GstBuffer * buf) { guint8 keyframe; AsfPayload *payload; payload = g_malloc0 (sizeof (AsfPayload)); payload->pad = (GstCollectData *) pad; payload->data = buf; GST_LOG_OBJECT (asfmux, "Processing payload data for stream number %" G_GUINT16_FORMAT, pad->stream_number); /* stream number */ if (GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT)) { keyframe = 0; } else { keyframe = 0x1 << 7; } payload->stream_number = keyframe | pad->stream_number; payload->media_obj_num = pad->media_object_number; payload->offset_in_media_obj = 0; payload->replicated_data_length = 8; /* replicated data - 1) media object size */ payload->media_object_size = GST_BUFFER_SIZE (buf); /* replicated data - 2) presentation time */ if (!GST_CLOCK_TIME_IS_VALID (GST_BUFFER_TIMESTAMP (buf))) { GST_ERROR_OBJECT (asfmux, "Received buffer without timestamp"); gst_asf_payload_free (payload); return GST_FLOW_ERROR; } g_assert (GST_CLOCK_TIME_IS_VALID (asfmux->first_ts)); g_assert (GST_CLOCK_TIME_IS_VALID (pad->first_ts)); payload->presentation_time = asfmux->preroll + ((GST_BUFFER_TIMESTAMP (buf) - asfmux->first_ts) / GST_MSECOND); /* update counting values */ pad->media_object_number = (pad->media_object_number + 1) % 256; if (GST_BUFFER_DURATION (buf) != GST_CLOCK_TIME_NONE) { pad->play_duration += GST_BUFFER_DURATION (buf); } else { GST_WARNING_OBJECT (asfmux, "Received buffer without duration, it will not " "be accounted in the total file time"); } asfmux->payloads = g_slist_append (asfmux->payloads, payload); asfmux->payload_data_size += GST_BUFFER_SIZE (buf) + ASF_MULTIPLE_PAYLOAD_HEADER_SIZE; GST_LOG_OBJECT (asfmux, "Payload data size: %" G_GUINT32_FORMAT, asfmux->payload_data_size); while (asfmux->payload_data_size + asfmux->payload_parsing_info_size >= asfmux->packet_size) { GstFlowReturn ret = gst_asf_mux_flush_payloads (asfmux); if (ret != GST_FLOW_OK) return ret; } return GST_FLOW_OK; } static GstFlowReturn gst_asf_mux_collected (GstCollectPads * collect, gpointer data) { GstAsfMux *asfmux = GST_ASF_MUX_CAST (data); GstFlowReturn ret = GST_FLOW_OK; GstAsfPad *best_pad = NULL; GstClockTime best_time = GST_CLOCK_TIME_NONE; GstBuffer *buf = NULL; GSList *walk; if (G_UNLIKELY (asfmux->state == GST_ASF_MUX_STATE_NONE)) { ret = gst_asf_mux_start_file (asfmux); if (ret != GST_FLOW_OK) { GST_WARNING_OBJECT (asfmux, "Failed to send headers"); return ret; } else { asfmux->state = GST_ASF_MUX_STATE_DATA; } } if (G_UNLIKELY (asfmux->state == GST_ASF_MUX_STATE_EOS)) return GST_FLOW_UNEXPECTED; /* select the earliest buffer */ walk = asfmux->collect->data; while (walk) { GstAsfPad *pad; GstCollectData *data; GstClockTime time; data = (GstCollectData *) walk->data; pad = (GstAsfPad *) data; walk = g_slist_next (walk); buf = gst_collect_pads_peek (collect, data); if (buf == NULL) { GST_LOG_OBJECT (asfmux, "Pad %s has no buffers", GST_PAD_NAME (pad->collect.pad)); continue; } time = GST_BUFFER_TIMESTAMP (buf); /* check the ts for getting the first time */ if (!GST_CLOCK_TIME_IS_VALID (pad->first_ts) && GST_CLOCK_TIME_IS_VALID (time)) { GST_DEBUG_OBJECT (asfmux, "First ts for stream number %" G_GUINT16_FORMAT ": %" GST_TIME_FORMAT, pad->stream_number, GST_TIME_ARGS (time)); pad->first_ts = time; if (!GST_CLOCK_TIME_IS_VALID (asfmux->first_ts) || time < asfmux->first_ts) { GST_DEBUG_OBJECT (asfmux, "New first ts for file %" GST_TIME_FORMAT, GST_TIME_ARGS (time)); asfmux->first_ts = time; } } gst_buffer_unref (buf); if (best_pad == NULL || !GST_CLOCK_TIME_IS_VALID (time) || (GST_CLOCK_TIME_IS_VALID (best_time) && time < best_time)) { best_pad = pad; best_time = time; } } if (best_pad != NULL) { /* we have data */ GST_LOG_OBJECT (asfmux, "selected pad %s with time %" GST_TIME_FORMAT, GST_PAD_NAME (best_pad->collect.pad), GST_TIME_ARGS (best_time)); buf = gst_collect_pads_pop (collect, &best_pad->collect); ret = gst_asf_mux_process_buffer (asfmux, best_pad, buf); } else { /* no data, let's finish it up */ while (asfmux->payloads) { ret = gst_asf_mux_flush_payloads (asfmux); if (ret != GST_FLOW_OK) { return ret; } } g_assert (asfmux->payloads == NULL); g_assert (asfmux->payload_data_size == 0); /* in not on 'streamable' mode we need to push indexes * and update headers */ if (!asfmux->prop_streamable) { ret = gst_asf_mux_stop_file (asfmux); } if (ret == GST_FLOW_OK) { gst_pad_push_event (asfmux->srcpad, gst_event_new_eos ()); ret = GST_FLOW_UNEXPECTED; } asfmux->state = GST_ASF_MUX_STATE_EOS; } return ret; } static void gst_asf_mux_pad_reset (GstAsfPad * pad) { pad->stream_number = 0; pad->media_object_number = 0; pad->play_duration = (GstClockTime) 0; pad->bitrate = 0; if (pad->codec_data) gst_buffer_unref (pad->codec_data); pad->codec_data = NULL; if (pad->taglist) gst_tag_list_free (pad->taglist); pad->taglist = NULL; pad->first_ts = GST_CLOCK_TIME_NONE; if (pad->is_audio) { GstAsfAudioPad *audiopad = (GstAsfAudioPad *) pad; audiopad->audioinfo.rate = 0; audiopad->audioinfo.channels = 0; audiopad->audioinfo.format = 0; audiopad->audioinfo.av_bps = 0; audiopad->audioinfo.blockalign = 0; audiopad->audioinfo.size = 0; } else { GstAsfVideoPad *videopad = (GstAsfVideoPad *) pad; videopad->vidinfo.size = 0; videopad->vidinfo.width = 0; videopad->vidinfo.height = 0; videopad->vidinfo.planes = 1; videopad->vidinfo.bit_cnt = 0; videopad->vidinfo.compression = 0; videopad->vidinfo.image_size = 0; videopad->vidinfo.xpels_meter = 0; videopad->vidinfo.ypels_meter = 0; videopad->vidinfo.num_colors = 0; videopad->vidinfo.imp_colors = 0; videopad->last_keyframe_packet = 0; videopad->has_keyframe = FALSE; videopad->last_keyframe_packet_count = 0; videopad->max_keyframe_packet_count = 0; videopad->next_index_time = 0; videopad->time_interval = DEFAULT_SIMPLE_INDEX_TIME_INTERVAL; if (videopad->simple_index) { GSList *walk; for (walk = videopad->simple_index; walk; walk = g_slist_next (walk)) { g_free (walk->data); walk->data = NULL; } g_slist_free (videopad->simple_index); } videopad->simple_index = NULL; } } static gboolean gst_asf_mux_audio_set_caps (GstPad * pad, GstCaps * caps) { GstAsfMux *asfmux; GstAsfAudioPad *audiopad; GstStructure *structure; const gchar *caps_name; gint channels, rate; gchar *aux; const GValue *codec_data; asfmux = GST_ASF_MUX (gst_pad_get_parent (pad)); audiopad = (GstAsfAudioPad *) gst_pad_get_element_private (pad); g_assert (audiopad); aux = gst_caps_to_string (caps); GST_DEBUG_OBJECT (asfmux, "%s:%s, caps=%s", GST_DEBUG_PAD_NAME (pad), aux); g_free (aux); structure = gst_caps_get_structure (caps, 0); caps_name = gst_structure_get_name (structure); if (!gst_structure_get_int (structure, "channels", &channels) || !gst_structure_get_int (structure, "rate", &rate)) goto refuse_caps; audiopad->audioinfo.channels = (guint16) channels; audiopad->audioinfo.rate = (guint32) rate; /* taken from avimux * codec initialization data, if any */ codec_data = gst_structure_get_value (structure, "codec_data"); if (codec_data) { audiopad->pad.codec_data = gst_value_get_buffer (codec_data); gst_buffer_ref (audiopad->pad.codec_data); } if (strcmp (caps_name, "audio/x-wma") == 0) { gint version; gint block_align = 0; gint bitrate = 0; if (!gst_structure_get_int (structure, "wmaversion", &version)) { goto refuse_caps; } if (gst_structure_get_int (structure, "block_align", &block_align)) { audiopad->audioinfo.blockalign = (guint16) block_align; } if (gst_structure_get_int (structure, "bitrate", &bitrate)) { audiopad->pad.bitrate = (guint32) bitrate; audiopad->audioinfo.av_bps = bitrate / 8; } if (version == 1) { audiopad->audioinfo.format = GST_RIFF_WAVE_FORMAT_WMAV1; } else if (version == 2) { audiopad->audioinfo.format = GST_RIFF_WAVE_FORMAT_WMAV2; } else if (version == 3) { audiopad->audioinfo.format = GST_RIFF_WAVE_FORMAT_WMAV3; } else { goto refuse_caps; } } else if (strcmp (caps_name, "audio/mpeg") == 0) { gint version; gint layer; if (!gst_structure_get_int (structure, "mpegversion", &version) || !gst_structure_get_int (structure, "layer", &layer)) { goto refuse_caps; } if (version != 1 || layer != 3) { goto refuse_caps; } audiopad->audioinfo.format = GST_RIFF_WAVE_FORMAT_MPEGL3; } else { goto refuse_caps; } gst_object_unref (asfmux); return TRUE; refuse_caps: GST_WARNING_OBJECT (asfmux, "pad %s refused caps %" GST_PTR_FORMAT, GST_PAD_NAME (pad), caps); gst_object_unref (asfmux); return FALSE; } /* TODO Read pixel aspect ratio */ static gboolean gst_asf_mux_video_set_caps (GstPad * pad, GstCaps * caps) { GstAsfMux *asfmux; GstAsfVideoPad *videopad; GstStructure *structure; const gchar *caps_name; gint width, height; gchar *aux; const GValue *codec_data; asfmux = GST_ASF_MUX (gst_pad_get_parent (pad)); videopad = (GstAsfVideoPad *) gst_pad_get_element_private (pad); g_assert (videopad); aux = gst_caps_to_string (caps); GST_DEBUG_OBJECT (asfmux, "%s:%s, caps=%s", GST_DEBUG_PAD_NAME (pad), aux); g_free (aux); structure = gst_caps_get_structure (caps, 0); caps_name = gst_structure_get_name (structure); if (!gst_structure_get_int (structure, "width", &width) || !gst_structure_get_int (structure, "height", &height)) goto refuse_caps; videopad->vidinfo.width = (gint32) width; videopad->vidinfo.height = (gint32) height; /* taken from avimux * codec initialization data, if any */ codec_data = gst_structure_get_value (structure, "codec_data"); if (codec_data) { videopad->pad.codec_data = gst_value_get_buffer (codec_data); gst_buffer_ref (videopad->pad.codec_data); } if (strcmp (caps_name, "video/x-wmv") == 0) { guint32 fourcc; videopad->vidinfo.bit_cnt = 24; /* in case we have a fourcc, we use it */ if (gst_structure_get_fourcc (structure, "format", &fourcc)) { videopad->vidinfo.compression = fourcc; } else { gint version; if (!gst_structure_get_int (structure, "wmvversion", &version)) goto refuse_caps; if (version == 2) { videopad->vidinfo.compression = GST_MAKE_FOURCC ('W', 'M', 'V', '2'); } else if (version == 1) { videopad->vidinfo.compression = GST_MAKE_FOURCC ('W', 'M', 'V', '1'); } else if (version == 3) { videopad->vidinfo.compression = GST_MAKE_FOURCC ('W', 'M', 'V', '3'); } else { goto refuse_caps; } } } else { goto refuse_caps; } gst_object_unref (asfmux); return TRUE; refuse_caps: GST_WARNING_OBJECT (asfmux, "pad %s refused caps %" GST_PTR_FORMAT, GST_PAD_NAME (pad), caps); gst_object_unref (asfmux); return FALSE; } static GstPad * gst_asf_mux_request_new_pad (GstElement * element, GstPadTemplate * templ, const gchar * req_name) { GstElementClass *klass = GST_ELEMENT_GET_CLASS (element); GstAsfMux *asfmux = GST_ASF_MUX_CAST (element); GstPad *newpad; GstAsfPad *collect_pad; gboolean is_audio; guint collect_size = 0; gchar *name; GST_DEBUG_OBJECT (asfmux, "Requested pad: %s", GST_STR_NULL (req_name)); if (asfmux->state != GST_ASF_MUX_STATE_NONE) { GST_WARNING_OBJECT (asfmux, "Not providing request pad after element is at " "paused/playing state."); return NULL; } if (templ == gst_element_class_get_pad_template (klass, "audio_%d")) { name = g_strdup_printf ("audio_%02d", asfmux->stream_number + 1); GST_DEBUG_OBJECT (asfmux, "Adding new pad %s", name); newpad = gst_pad_new_from_template (templ, name); g_free (name); is_audio = TRUE; gst_pad_set_setcaps_function (newpad, GST_DEBUG_FUNCPTR (gst_asf_mux_audio_set_caps)); } else if (templ == gst_element_class_get_pad_template (klass, "video_%d")) { name = g_strdup_printf ("video_%02d", asfmux->stream_number + 1); GST_DEBUG_OBJECT (asfmux, "Adding new pad %s", name); newpad = gst_pad_new_from_template (templ, name); g_free (name); is_audio = FALSE; gst_pad_set_setcaps_function (newpad, GST_DEBUG_FUNCPTR (gst_asf_mux_video_set_caps)); } else { GST_WARNING_OBJECT (asfmux, "This is not our template!"); return NULL; } /* add pad to collections */ if (is_audio) { collect_size = sizeof (GstAsfAudioPad); } else { collect_size = sizeof (GstAsfVideoPad); } collect_pad = (GstAsfPad *) gst_collect_pads_add_pad_full (asfmux->collect, newpad, collect_size, (GstCollectDataDestroyNotify) (gst_asf_mux_pad_reset)); /* set up pad */ collect_pad->is_audio = is_audio; if (!is_audio) ((GstAsfVideoPad *) collect_pad)->simple_index = NULL; collect_pad->taglist = NULL; gst_asf_mux_pad_reset (collect_pad); /* set pad stream number */ asfmux->stream_number += 1; collect_pad->stream_number = asfmux->stream_number; /* 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. */ asfmux->collect_event = (GstPadEventFunction) GST_PAD_EVENTFUNC (newpad); gst_pad_set_event_function (newpad, GST_DEBUG_FUNCPTR (gst_asf_mux_sink_event)); gst_pad_set_active (newpad, TRUE); gst_element_add_pad (element, newpad); return newpad; } static void gst_asf_mux_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec) { GstAsfMux *asfmux; asfmux = GST_ASF_MUX (object); switch (prop_id) { case PROP_PACKET_SIZE: g_value_set_uint (value, asfmux->prop_packet_size); break; case PROP_PREROLL: g_value_set_uint64 (value, asfmux->prop_preroll); break; case PROP_MERGE_STREAM_TAGS: g_value_set_boolean (value, asfmux->prop_merge_stream_tags); break; case PROP_PADDING: g_value_set_uint64 (value, asfmux->prop_padding); break; case PROP_IS_LIVE: GST_WARNING_OBJECT (object, "The 'is-live' property is deprecated, use " "the 'streamable' property instead"); g_value_set_boolean (value, asfmux->prop_streamable); break; case PROP_STREAMABLE: g_value_set_boolean (value, asfmux->prop_streamable); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gst_asf_mux_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec) { GstAsfMux *asfmux; asfmux = GST_ASF_MUX (object); switch (prop_id) { case PROP_PACKET_SIZE: asfmux->prop_packet_size = g_value_get_uint (value); break; case PROP_PREROLL: asfmux->prop_preroll = g_value_get_uint64 (value); break; case PROP_MERGE_STREAM_TAGS: asfmux->prop_merge_stream_tags = g_value_get_boolean (value); break; case PROP_PADDING: asfmux->prop_padding = g_value_get_uint64 (value); break; case PROP_IS_LIVE: g_warning ("This property is deprecated, use 'streamable' instead"); asfmux->prop_streamable = g_value_get_boolean (value); break; case PROP_STREAMABLE: asfmux->prop_streamable = g_value_get_boolean (value); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static GstStateChangeReturn gst_asf_mux_change_state (GstElement * element, GstStateChange transition) { GstAsfMux *asfmux; GstStateChangeReturn ret; asfmux = GST_ASF_MUX (element); switch (transition) { case GST_STATE_CHANGE_READY_TO_PAUSED: /* TODO - check if it is possible to mux 2 files without going * through here */ asfmux->payload_parsing_info_size = gst_asf_mux_find_payload_parsing_info_size (asfmux); asfmux->packet_size = asfmux->prop_packet_size; asfmux->preroll = asfmux->prop_preroll; asfmux->merge_stream_tags = asfmux->prop_merge_stream_tags; gst_collect_pads_start (asfmux->collect); break; case GST_STATE_CHANGE_PAUSED_TO_PLAYING: break; case GST_STATE_CHANGE_PAUSED_TO_READY: gst_collect_pads_stop (asfmux->collect); asfmux->state = GST_ASF_MUX_STATE_NONE; break; default: break; } ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition); if (ret == GST_STATE_CHANGE_FAILURE) goto done; switch (transition) { case GST_STATE_CHANGE_PLAYING_TO_PAUSED: break; case GST_STATE_CHANGE_PAUSED_TO_READY: break; case GST_STATE_CHANGE_READY_TO_NULL: break; default: break; } done: return ret; } gboolean gst_asf_mux_plugin_init (GstPlugin * plugin) { return gst_element_register (plugin, "asfmux", GST_RANK_PRIMARY, GST_TYPE_ASF_MUX); }