@christophecvr, below is the schwerkraft (aka dreambox) gst_dvbaudiosink_set_caps:
995 else if (!strcmp(type, "audio/x-raw-int")) {
996 GST_INFO_OBJECT (self, "MIMETYPE %s",type);
997 bypass = 0xf;
998 gint block_align, width, rate, depth, channels, bitrate;
999 gst_structure_get_int (structure, "channels", &channels);
1000 gst_structure_get_int (structure, "rate", &rate);
1001 gst_structure_get_int (structure, "width", &width);
1002 gst_structure_get_int (structure, "depth", &depth);
1003 // calc size of pcm data for 30ms
1004 self->block_align = rate * 30 / 1000;
1005 self->block_align *= channels * depth / 8;
1006 block_align = channels * width / 8;
1007 bitrate = channels * rate * width;
1008 self->temp_offset = 18+8;
1009 self->temp_buffer = gst_buffer_new_and_alloc(self->temp_offset+self->block_align);
1010 guint8 *d = GST_BUFFER_DATA(self->temp_buffer);
1011 memcpy(d, "BCMA", 4);
1012 d[4] = (self->block_align & 0xFF000000) >> 24;
1013 d[5] = (self->block_align & 0xFF0000) >> 16;
1014 d[6] = (self->block_align & 0xFF00) >> 8;
1015 d[7] = (self->block_align & 0xFF);
1016 // rebuild WAVFORMAT
1017 d[8] = 0x01; // format tag
1018 d[9] = 0x00;
1019 d[10] = channels & 0xFF;
1020 d[11] = (channels >> 8) & 0xFF;
1021 d[12] = rate & 0xFF; // sample rate
1022 d[13] = (rate & 0xFF00) >> 8;
1023 d[14] = (rate & 0xFF0000) >> 16;
1024 d[15] = (rate & 0xFF000000) >> 24;
1025 d[16] = (bitrate >> 3) & 0xFF; // byte rate
1026 d[17] = (bitrate >> 11) & 0xFF;
1027 d[18] = (bitrate >> 19) & 0xFF;
1028 d[19] = (bitrate >> 27) & 0xFF;
1029 d[20] = block_align & 0xFF; // block align
1030 d[21] = (block_align >> 8) & 0xFF;
1031 d[22] = depth & 0xFF; // word size
1032 d[23] = (depth >> 8) & 0xFF;
1033 d[24] = 0; // codec data len
1034 d[25] = 0;
1035 }
Below is the your version of gst_dvbaudiosink_set_caps:666 else if (!strcmp(type, XRAW))
667 {
668 guint8 *data;
669 gint size;
670 gint format = 0x01;
671 #if GST_VERSION_MAJOR >= 1
672 const gchar *formatstring = NULL;
673 #endif
674 gint width = 0, depth = 0, rate = 0, channels, block_align, byterate;
675 self->codec_data = gst_buffer_new_and_alloc(18);
676 #if GST_VERSION_MAJOR < 1
677 data = GST_BUFFER_DATA(self->codec_data);
678 size = GST_BUFFER_SIZE(self->codec_data);
679 #else
680 GstMapInfo map;
681 gst_buffer_map(self->codec_data, &map, GST_MAP_WRITE);
682 data = map.data;
683 size = map.size;
684 #endif
685 #if GST_VERSION_MAJOR < 1
686 gst_structure_get_int(structure, "width", &width);
687 gst_structure_get_int(structure, "depth", &depth);
688 #else
689 formatstring = gst_structure_get_string(structure, "format");
690 if (formatstring)
691 {
692 if (!strncmp(&formatstring[1], "32", 2))
693 {
694 width = depth = 32;
695 }
696 else if (!strncmp(&formatstring[1], "24", 2))
697 {
698 width = depth = 24;
699 }
700 else if (!strncmp(&formatstring[1], "16", 2))
701 {
702 width = depth = 16;
703 }
704 else if (!strncmp(&formatstring[1], "8", 1))
705 {
706 width = depth = 8;
707 }
708 }
709 #endif
710 gst_structure_get_int(structure, "rate", &rate);
711 gst_structure_get_int(structure, "channels", &channels);
712 byterate = channels * rate * width / 8;
713 block_align = channels * width / 8;
714 memset(data, 0, size);
715 /* format tag */
716 *(data++) = format & 0xff;
717 *(data++) = (format >> 8) & 0xff;
718 /* channels */
719 *(data++) = channels & 0xff;
720 *(data++) = (channels >> 8) & 0xff;
721 /* sample rate */
722 *(data++) = rate & 0xff;
723 *(data++) = (rate >> 8) & 0xff;
724 *(data++) = (rate >> 16) & 0xff;
725 *(data++) = (rate >> 24) & 0xff;
726 /* byte rate */
727 *(data++) = byterate & 0xff;
728 *(data++) = (byterate >> 8) & 0xff;
729 *(data++) = (byterate >> 16) & 0xff;
730 *(data++) = (byterate >> 24) & 0xff;
731 /* block align */
732 *(data++) = block_align & 0xff;
733 *(data++) = (block_align >> 8) & 0xff;
734 /* word size */
735 *(data++) = depth & 0xff;
736 *(data++) = (depth >> 8) & 0xff;
737 self->fixed_buffersize = rate * 30 / 1000;
738 self->fixed_buffersize *= channels * depth / 8;
739 self->fixed_buffertimestamp = GST_CLOCK_TIME_NONE;
740 self->fixed_bufferduration = GST_SECOND * (GstClockTime)self->fixed_buffersize / (GstClockTime)byterate;
741 GST_INFO_OBJECT(self, "MIMETYPE %s", type);
742 bypass = AUDIOTYPE_RAW;
743 #if GST_VERSION_MAJOR >= 1
744 gst_buffer_unmap(self->codec_data, &map);
745 #endif
746 }
I have the impression that produced data for "RAW" are not the same.WAVFORMAT (d[8] to d[23]) seems same for both dvbmediasinks.
But schwerkraft starts with BCMA (d[0] to d[3]), then size of pcm data for 30ms is stored (d[4] to d[7]), finaly codec data len is added (d[24] to d[25]).
Did you compare produced data produced with OpenPLi dvbmediasink patched for dreambox?
PS. Regarding codec data len, I guess OpenPLi version silently does the same with memset(data, 0, size);
Edited by athoik, 20 March 2015 - 20:08.
