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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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Fix type-punning (poorly). This element needs a lot of work -- it has obvious endianness problems.
Original commit message from CVS: Fix type-punning (poorly). This element needs a lot of work -- it has obvious endianness problems.
This commit is contained in:
David Schleef
parent
b4786e830b
commit
5e6d64e776
1 changed files with 51 additions and 25 deletions
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@ -423,7 +423,7 @@ gst_asf_demux_loop (GstElement *element)
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static guint32 gst_asf_demux_read_var_length (GstASFDemux *asf_demux, guint8 type, guint32 *rsize)
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{
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guint32 got_bytes;
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guint32 *var;
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guint8 *var;
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guint32 ret = 0;
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GstByteStream *bs = asf_demux->bs;
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@ -431,7 +431,7 @@ static guint32 gst_asf_demux_read_var_length (GstASFDemux *asf_demux, guint8 typ
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return 0;
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}
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got_bytes = gst_bytestream_peek_bytes (bs, (guint8**)&var, 4);
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got_bytes = gst_bytestream_peek_bytes (bs, &var, 4);
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while (got_bytes < 4) {
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guint32 remaining;
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@ -440,22 +440,22 @@ static guint32 gst_asf_demux_read_var_length (GstASFDemux *asf_demux, guint8 typ
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gst_bytestream_get_status (bs, &remaining, &event);
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gst_event_unref (event);
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got_bytes = gst_bytestream_peek_bytes (bs, (guint8**)&var, 4);
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got_bytes = gst_bytestream_peek_bytes (bs, &var, 4);
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}
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switch (type) {
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case 1:
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ret = GUINT32_FROM_LE(*var) & 0xff;
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ret = GUINT32_FROM_LE(*(guint32 *)var) & 0xff;
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gst_bytestream_flush (bs, 1);
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*rsize += 1;
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break;
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case 2:
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ret = GUINT32_FROM_LE(*var) & 0xffff;
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ret = GUINT32_FROM_LE(*(guint32 *)var) & 0xffff;
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gst_bytestream_flush (bs, 2);
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*rsize += 2;
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break;
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case 3:
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ret = GUINT32_FROM_LE(*var);
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ret = GUINT32_FROM_LE(*(guint32 *)var);
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gst_bytestream_flush (bs, 4);
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*rsize += 4;
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break;
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@ -481,10 +481,12 @@ static gboolean
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gst_asf_demux_process_file (GstASFDemux *asf_demux, guint64 *filepos, guint64 *obj_size)
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{
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asf_obj_file *object;
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guint8 *ptr;
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guint64 packets;
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/* Get the rest of the header's header */
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gst_asf_demux_read_object_header_rest (asf_demux, (guint8**)&object, 80);
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gst_asf_demux_read_object_header_rest (asf_demux, &ptr, 80);
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object = (asf_obj_file *)ptr;
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packets = GUINT64_FROM_LE (object->packets_count);
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asf_demux->packet_size = GUINT32_FROM_LE (object->max_pktsize);
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asf_demux->play_time = (guint32) GUINT64_FROM_LE (object->play_time) / 10;
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@ -503,6 +505,7 @@ gst_asf_demux_process_bitrate_props_object (GstASFDemux *asf_demux, guint64 *fil
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guint16 num_streams;
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guint8 stream_id;
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guint16 i;
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guint8 *ptr;
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asf_bitrate_record *bitrate_record;
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got_bytes = gst_bytestream_read (asf_demux->bs, &buf, 2);
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@ -511,7 +514,8 @@ gst_asf_demux_process_bitrate_props_object (GstASFDemux *asf_demux, guint64 *fil
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GST_INFO ( "Object is a bitrate properties object with %u streams.", num_streams);
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for (i = 0; i < num_streams; i++) {
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gst_asf_demux_read_object_header_rest (asf_demux, (guint8**)&bitrate_record, 6);
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gst_asf_demux_read_object_header_rest (asf_demux, &ptr, 6);
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bitrate_record = (asf_bitrate_record *)ptr;
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stream_id = GUINT16_FROM_LE (bitrate_record->stream_id) & 0x7f;
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asf_demux->bitrate[stream_id] = GUINT32_FROM_LE (bitrate_record->bitrate);
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}
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@ -528,12 +532,14 @@ gst_asf_demux_process_comment (GstASFDemux *asf_demux, guint64 *filepos, guint64
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guint16 copyright_length;
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guint16 description_length;
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guint16 rating_length;
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guint8 *ptr;
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GstByteStream *bs = asf_demux->bs;
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GST_INFO ( "Object is a comment.");
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/* Get the rest of the comment's header */
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gst_asf_demux_read_object_header_rest (asf_demux, (guint8**)&object, 10);
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gst_asf_demux_read_object_header_rest (asf_demux, &ptr, 10);
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object = (asf_obj_comment *)ptr;
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title_length = GUINT16_FROM_LE (object->title_length);
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author_length = GUINT16_FROM_LE (object->author_length);
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copyright_length = GUINT16_FROM_LE (object->copyright_length);
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@ -558,10 +564,11 @@ gst_asf_demux_process_header (GstASFDemux *asf_demux, guint64 *filepos, guint64
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guint32 num_objects;
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asf_obj_header *object;
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guint32 i;
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guint8 *ptr;
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/* Get the rest of the header's header */
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gst_asf_demux_read_object_header_rest (asf_demux, (guint8**)&object, 6);
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gst_asf_demux_read_object_header_rest (asf_demux, &ptr, 6);
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object = (asf_obj_header *)ptr;
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num_objects = GUINT32_FROM_LE (object->num_objects);
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GST_INFO ( "Object is a header with %u parts", num_objects);
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@ -602,6 +609,7 @@ gst_asf_demux_process_segment (GstASFDemux *asf_demux,
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if (replic_size > 1) {
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asf_replicated_data *replicated_data_header;
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guint8 **replicated_data = NULL;
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guint8 *ptr;
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segment_info.compressed = FALSE;
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@ -610,7 +618,8 @@ gst_asf_demux_process_segment (GstASFDemux *asf_demux,
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gst_element_error (GST_ELEMENT (asf_demux), "The payload has replicated data but the size is less than 8");
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return FALSE;
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}
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gst_asf_demux_read_object_header_rest (asf_demux, (guint8**)&replicated_data_header, 8);
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gst_asf_demux_read_object_header_rest (asf_demux, &ptr, 8);
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replicated_data_header = (asf_replicated_data *)ptr;
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segment_info.frag_timestamp = GUINT32_FROM_LE (replicated_data_header->frag_timestamp);
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segment_info.segment_size = GUINT32_FROM_LE (replicated_data_header->object_size);
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@ -690,9 +699,11 @@ gst_asf_demux_process_data (GstASFDemux *asf_demux, guint64 *filepos, guint64 *o
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guint8 property;
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asf_packet_info packet_info;
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guint32 rsize;
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guint8 *ptr;
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/* Get the rest of the header */
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gst_asf_demux_read_object_header_rest (asf_demux, (guint8**)&object, 26);
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gst_asf_demux_read_object_header_rest (asf_demux, &ptr, 26);
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object = (asf_obj_data *)ptr;
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packets = GUINT64_FROM_LE (object->packets);
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GST_INFO ( "Object is data with %" G_GUINT64_FORMAT " packets", packets);
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@ -703,15 +714,18 @@ gst_asf_demux_process_data (GstASFDemux *asf_demux, guint64 *filepos, guint64 *o
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gst_asf_demux_read_object_header_rest (asf_demux, (guint8**)&buf, 1); rsize=1;
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if (*buf & 0x80) {
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asf_obj_data_correction *correction_object;
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guint8 *ptr;
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/* Uses error correction */
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correction = TRUE;
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GST_DEBUG ("Data has error correction (%x)", *buf);
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gst_asf_demux_read_object_header_rest (asf_demux, (guint8**)&correction_object, 2); rsize += 2;
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gst_asf_demux_read_object_header_rest (asf_demux, &ptr, 2); rsize += 2;
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correction_object = (asf_obj_data_correction *)ptr;
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}
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/* Read the packet flags */
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gst_asf_demux_read_object_header_rest (asf_demux, (guint8**)&packet_properties_object, 2); rsize += 2;
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gst_asf_demux_read_object_header_rest (asf_demux, &ptr, 2); rsize += 2;
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packet_properties_object = (asf_obj_data_packet *)ptr;
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flags = packet_properties_object->flags;
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property = packet_properties_object->property;
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@ -731,9 +745,11 @@ gst_asf_demux_process_data (GstASFDemux *asf_demux, guint64 *filepos, guint64 *o
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packet_info.fragoffsettype = (property >> 2) & 0x03;
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packet_info.seqtype = (property >> 4) & 0x03;
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gst_asf_demux_read_object_header_rest (asf_demux, (guint8**)×tamp, 4);
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gst_asf_demux_read_object_header_rest (asf_demux, &ptr, 4);
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timestamp = (guint32 *)ptr;
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asf_demux->timestamp = *timestamp;
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gst_asf_demux_read_object_header_rest (asf_demux, (guint8**)&duration, 2);
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gst_asf_demux_read_object_header_rest (asf_demux, &ptr, 2);
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duration = (guint16 *)ptr;
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rsize += 6;
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@ -787,9 +803,11 @@ gst_asf_demux_process_stream (GstASFDemux *asf_demux, guint64 *filepos, guint64
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GstBuffer *buf;
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guint32 got_bytes;
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guint16 id;
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guint8 *ptr;
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/* Get the rest of the header's header */
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gst_asf_demux_read_object_header_rest (asf_demux, (guint8**)&object, 54);
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gst_asf_demux_read_object_header_rest (asf_demux, &ptr, 54);
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object = (asf_obj_stream *)ptr;
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/* Identify the stream type */
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stream_id = gst_asf_demux_identify_guid (asf_demux, asf_stream_guids, &(object->type));
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@ -799,7 +817,8 @@ gst_asf_demux_process_stream (GstASFDemux *asf_demux, guint64 *filepos, guint64
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switch (stream_id) {
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case ASF_STREAM_AUDIO:
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gst_asf_demux_read_object_header_rest (asf_demux, (guint8**)&audio_object, 18);
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gst_asf_demux_read_object_header_rest (asf_demux, &ptr, 18);
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audio_object = (asf_stream_audio *)ptr;
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size = GUINT16_FROM_LE (audio_object->size);
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GST_INFO ( "Object is an audio stream with %u bytes of additional data.", size);
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@ -815,7 +834,8 @@ gst_asf_demux_process_stream (GstASFDemux *asf_demux, guint64 *filepos, guint64
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got_bytes = gst_bytestream_read (asf_demux->bs, &buf, 1);
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asf_demux->span = *GST_BUFFER_DATA (buf);
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gst_asf_demux_read_object_header_rest (asf_demux, (guint8**)&correction_object, 7);
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gst_asf_demux_read_object_header_rest (asf_demux, &ptr, 7);
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correction_object = (asf_stream_correction *)ptr;
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GST_DEBUG ("Descrambling: ps:%d cs:%d ds:%d s:%d sd:%d", GUINT16_FROM_LE(correction_object->packet_size), GUINT16_FROM_LE(correction_object->chunk_size), GUINT16_FROM_LE(correction_object->data_size), asf_demux->span, correction_object->silence_data);
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if (asf_demux->span > 1) {
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@ -842,12 +862,14 @@ gst_asf_demux_process_stream (GstASFDemux *asf_demux, guint64 *filepos, guint64
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break;
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case ASF_STREAM_VIDEO:
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gst_asf_demux_read_object_header_rest (asf_demux, (guint8**)&video_object, 11);
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gst_asf_demux_read_object_header_rest (asf_demux, &ptr, 11);
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video_object = (asf_stream_video *)ptr;
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size = GUINT16_FROM_BE(video_object->size) - 40; /* Byte order gets
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* offset by single
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* byte */
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GST_INFO ( "Object is a video stream with %u bytes of additional data.", size);
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gst_asf_demux_read_object_header_rest (asf_demux, (guint8**)&video_format_object, 40);
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gst_asf_demux_read_object_header_rest (asf_demux, &ptr, 40);
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video_format_object = (asf_stream_video_format *)ptr;
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if (!gst_asf_demux_add_video_stream (asf_demux, video_format_object, id))
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return FALSE;
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@ -894,10 +916,12 @@ gst_asf_demux_read_object_header (GstASFDemux *asf_demux, guint32 *obj_id, guint
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ASFGuid *guid;
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guint64 *size;
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GstByteStream *bs = asf_demux->bs;
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guint8 *ptr;
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/* First get the GUID */
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got_bytes = gst_bytestream_peek_bytes (bs, (guint8**)&guid, sizeof(ASFGuid));
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got_bytes = gst_bytestream_peek_bytes (bs, &ptr, sizeof(ASFGuid));
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guid = (ASFGuid *)ptr;
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if (got_bytes < sizeof (ASFGuid)) {
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guint32 remaining;
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GstEvent *event;
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@ -919,7 +943,8 @@ gst_asf_demux_read_object_header (GstASFDemux *asf_demux, guint32 *obj_id, guint
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}
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/* Now get the object size */
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got_bytes = gst_bytestream_peek_bytes (bs, (guint8**)&size, sizeof (guint64));
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got_bytes = gst_bytestream_peek_bytes (bs, &ptr, sizeof (guint64));
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size = (guint64 *)ptr;
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while (got_bytes < sizeof (guint64)) {
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guint32 remaining;
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GstEvent *event;
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@ -927,7 +952,8 @@ gst_asf_demux_read_object_header (GstASFDemux *asf_demux, guint32 *obj_id, guint
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gst_bytestream_get_status (bs, &remaining, &event);
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gst_event_unref (event);
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got_bytes = gst_bytestream_peek_bytes (bs, (guint8**)&size, sizeof (guint64));
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got_bytes = gst_bytestream_peek_bytes (bs, &ptr, sizeof (guint64));
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size = (guint64 *)ptr;
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}
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*obj_size = GUINT64_FROM_LE (*size);
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