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mssdemux: parse block_align, channels and rate from waveformatex if possible

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wma v2 expects block_align, channels and rate fields set to its caps.
This isn't present direclty on the manifests, so mssdemux should parse
it from the waveformatex structure

https://bugzilla.gnome.org/show_bug.cgi?id=699924
This commit is contained in:
Thiago Santos 2013-05-15 00:48:53 -03:00
parent f74f9cd3ab
commit 27d726fbfa
1 changed files with 60 additions and 34 deletions
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94
ext/smoothstreaming/gstmssmanifest.c
View file

@ -563,50 +563,80 @@ _gst_mss_stream_audio_caps_from_qualitylevel_xml (GstMssStreamQuality * q)
GstCaps *caps;
GstStructure *structure;
gchar *fourcc = (gchar *) xmlGetProp (node, (xmlChar *) "FourCC");
gchar *channels = (gchar *) xmlGetProp (node, (xmlChar *) "Channels");
gchar *rate = (gchar *) xmlGetProp (node, (xmlChar *) "SamplingRate");
gchar *codec_data =
gchar *channels_str = (gchar *) xmlGetProp (node, (xmlChar *) "Channels");
gchar *rate_str = (gchar *) xmlGetProp (node, (xmlChar *) "SamplingRate");
gchar *codec_data_str =
(gchar *) xmlGetProp (node, (xmlChar *) "CodecPrivateData");
GstBuffer *codec_data = NULL;
gint block_align = 0;
gint rate = 0;
gint channels = 0;
if (!fourcc) /* sometimes the fourcc is omitted, we fallback to the Subtype in the StreamIndex node */
fourcc = (gchar *) xmlGetProp (node->parent, (xmlChar *) "Subtype");
if (!codec_data)
codec_data = (gchar *) xmlGetProp (node, (xmlChar *) "WaveFormatEx");
caps = _gst_mss_stream_audio_caps_from_fourcc (fourcc);
if (!caps)
goto end;
structure = gst_caps_get_structure (caps, 0);
if (channels) {
gst_structure_set (structure, "channels", G_TYPE_INT,
(int) g_ascii_strtoull (channels, NULL, 10), NULL);
}
if (rate) {
gst_structure_set (structure, "rate", G_TYPE_INT,
(int) g_ascii_strtoull (rate, NULL, 10), NULL);
}
if (q->bitrate) {
gst_structure_set (structure, "bitrate", G_TYPE_INT, q->bitrate, NULL);
if (codec_data_str && strlen (codec_data_str)) {
codec_data = gst_buffer_from_hex_string ((gchar *) codec_data_str);
}
if (codec_data && strlen (codec_data)) {
GstBuffer *buffer = gst_buffer_from_hex_string ((gchar *) codec_data);
gst_structure_set (structure, "codec_data", GST_TYPE_BUFFER, buffer, NULL);
gst_buffer_unref (buffer);
} else if (strcmp (fourcc, "AACL") == 0 && rate && channels) {
GstBuffer *buffer =
_make_aacl_codec_data (g_ascii_strtoull (rate, NULL, 10),
g_ascii_strtoull (channels, NULL, 10));
gst_caps_set_simple (caps, "codec_data", GST_TYPE_BUFFER, buffer, NULL);
gst_buffer_unref (buffer);
if (rate_str)
rate = (gint) g_ascii_strtoull (rate_str, NULL, 10);
if (channels_str)
channels = (int) g_ascii_strtoull (channels_str, NULL, 10);
if (!codec_data) {
GstMapInfo mapinfo;
codec_data_str = (gchar *) xmlGetProp (node, (xmlChar *) "WaveFormatEx");
if (codec_data_str && strlen (codec_data_str)) {
codec_data = gst_buffer_from_hex_string ((gchar *) codec_data_str);
/* since this is a waveformatex, try to get the block_align and rate */
gst_buffer_map (codec_data, &mapinfo, GST_MAP_READ);
if (mapinfo.size >= 14) {
if (!channels_str) {
channels = GST_READ_UINT16_LE (mapinfo.data + 2);
}
if (!rate_str) {
rate = GST_READ_UINT32_LE (mapinfo.data + 4);
}
block_align = GST_READ_UINT16_LE (mapinfo.data + 12);
}
gst_buffer_unmap (codec_data, &mapinfo);
}
}
if (!codec_data && strcmp (fourcc, "AACL") == 0 && rate && channels) {
codec_data = _make_aacl_codec_data (rate, channels);
}
if (block_align)
gst_structure_set (structure, "block_align", G_TYPE_INT, block_align, NULL);
if (channels)
gst_structure_set (structure, "channels", G_TYPE_INT, channels, NULL);
if (rate)
gst_structure_set (structure, "rate", G_TYPE_INT, rate, NULL);
if (q->bitrate)
gst_structure_set (structure, "bitrate", G_TYPE_INT, q->bitrate, NULL);
if (codec_data)
gst_structure_set (structure, "codec_data", GST_TYPE_BUFFER, codec_data,
NULL);
end:
if (codec_data)
gst_buffer_unref (codec_data);
xmlFree (fourcc);
xmlFree (channels);
xmlFree (rate);
xmlFree (codec_data);
xmlFree (channels_str);
xmlFree (rate_str);
xmlFree (codec_data_str);
return caps;
}
@ -700,13 +730,9 @@ gst_mss_stream_get_caps (GstMssStream * stream)
GstCaps *caps = NULL;
if (streamtype == MSS_STREAM_TYPE_VIDEO)
caps =
_gst_mss_stream_video_caps_from_qualitylevel_xml
(qualitylevel);
caps = _gst_mss_stream_video_caps_from_qualitylevel_xml (qualitylevel);
else if (streamtype == MSS_STREAM_TYPE_AUDIO)
caps =
_gst_mss_stream_audio_caps_from_qualitylevel_xml
(qualitylevel);
caps = _gst_mss_stream_audio_caps_from_qualitylevel_xml (qualitylevel);
return caps;
}