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matroska-mux: make up an OpusHead block if possible when missing

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This block is needed in the Matroska file, but data coming from
RTP may not have one.

https://bugzilla.gnome.org/show_bug.cgi?id=761489
This commit is contained in:
Vincent Penquerc'h 2016-02-04 10:43:15 +00:00 committed by Sebastian Dröge
parent afad769c78
commit 565607107f
1 changed files with 52 additions and 0 deletions
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52
gst/matroska/matroska-mux.c
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@ -53,6 +53,7 @@
#include <gst/audio/audio.h>
#include <gst/riff/riff-media.h>
#include <gst/tag/tag.h>
#include <gst/pbutils/codec-utils.h>
#include "matroska-mux.h"
#include "matroska-ids.h"
@ -1687,6 +1688,48 @@ wrong_content_type:
}
}
static gboolean
opus_make_codecdata (GstMatroskaTrackContext * context, GstCaps * caps)
{
guint32 rate;
guint8 channels;
guint8 channel_mapping_family;
guint8 stream_count, coupled_count, channel_mapping[256];
GstBuffer *buffer;
GstMapInfo map;
/* Opus headers are not in-band */
context->xiph_headers_to_skip = 0;
context->codec_delay = 0;
context->seek_preroll = 80 * GST_MSECOND;
if (!gst_codec_utils_opus_parse_caps (caps, &rate, &channels,
&channel_mapping_family, &stream_count, &coupled_count,
channel_mapping)) {
GST_WARNING ("Failed to parse caps for Opus");
return FALSE;
}
buffer =
gst_codec_utils_opus_create_header (rate, channels,
channel_mapping_family, stream_count, coupled_count, channel_mapping, 0,
0);
if (!buffer) {
GST_WARNING ("Failed to create Opus header from caps");
return FALSE;
}
gst_buffer_map (buffer, &map, GST_MAP_READ);
context->codec_priv_size = map.size;
context->codec_priv = g_malloc (context->codec_priv_size);
memcpy (context->codec_priv, map.data, map.size);
gst_buffer_unmap (buffer, &map);
gst_buffer_unref (buffer);
return TRUE;
}
/**
* gst_matroska_mux_audio_pad_setcaps:
* @pad: Pad which got the caps.
@ -1909,6 +1952,15 @@ gst_matroska_mux_audio_pad_setcaps (GstPad * pad, GstCaps * caps)
("opus stream headers missing or malformed"));
goto refuse_caps;
}
} else {
/* no streamheader, but we need to have one, so we make one up
based on caps */
gst_matroska_mux_free_codec_priv (context);
if (!opus_make_codecdata (context, caps)) {
GST_ELEMENT_ERROR (mux, STREAM, MUX, (NULL),
("opus stream headers missing or malformed"));
goto refuse_caps;
}
}
} else if (!strcmp (mimetype, "audio/x-ac3")) {
gst_matroska_mux_set_codec_id (context, GST_MATROSKA_CODEC_ID_AUDIO_AC3);