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qtdemux: add support for 'wma ' mapping as found in some ismv files

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e.g. To_The_Limit_720_2962.ismv
This commit is contained in:
Tim-Philipp Müller 2014-08-09 20:46:04 +01:00
parent 6183f83190
commit f41d03cd4d
1 changed files with 108 additions and 0 deletions
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108
gst/isomp4/qtdemux.c
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@ -8384,6 +8384,113 @@ qtdemux_parse_trak (GstQTDemux * qtdemux, GNode * trak)
}
break;
}
case GST_MAKE_FOURCC ('w', 'm', 'a', ' '):
{
gint len = QT_UINT32 (stsd_data) - offset;
const guint8 *wfex_data = stsd_data + offset;
const gchar *codec_name = NULL;
gint version = 1;
/* from http://msdn.microsoft.com/en-us/library/dd757720(VS.85).aspx */
/* FIXME this should also be gst_riff_strf_auds,
* but the latter one is actually missing bits-per-sample :( */
typedef struct
{
gint16 wFormatTag;
gint16 nChannels;
gint32 nSamplesPerSec;
gint32 nAvgBytesPerSec;
gint16 nBlockAlign;
gint16 wBitsPerSample;
gint16 cbSize;
} WAVEFORMATEX;
WAVEFORMATEX wfex;
/* FIXME: unify with similar wavformatex parsing code above */
GST_DEBUG_OBJECT (qtdemux, "parse wma, looking for wfex");
/* find wfex */
while (len >= 8) {
gint size;
if (QT_UINT32 (wfex_data) <= len)
size = QT_UINT32 (wfex_data) - 8;
else
size = len - 8;
if (size < 1)
/* No real data, so break out */
break;
switch (QT_FOURCC (wfex_data + 4)) {
case GST_MAKE_FOURCC ('w', 'f', 'e', 'x'):
{
GST_DEBUG_OBJECT (qtdemux, "found wfex in stsd");
if (size < 8 + 18)
break;
wfex.wFormatTag = GST_READ_UINT16_LE (wfex_data + 8 + 0);
wfex.nChannels = GST_READ_UINT16_LE (wfex_data + 8 + 2);
wfex.nSamplesPerSec = GST_READ_UINT32_LE (wfex_data + 8 + 4);
wfex.nAvgBytesPerSec = GST_READ_UINT32_LE (wfex_data + 8 + 8);
wfex.nBlockAlign = GST_READ_UINT16_LE (wfex_data + 8 + 12);
wfex.wBitsPerSample = GST_READ_UINT16_LE (wfex_data + 8 + 14);
wfex.cbSize = GST_READ_UINT16_LE (wfex_data + 8 + 16);
GST_LOG_OBJECT (qtdemux, "Found wfex box in stsd:");
GST_LOG_OBJECT (qtdemux, "FormatTag = 0x%04x, Channels = %u, "
"SamplesPerSec = %u, AvgBytesPerSec = %u, BlockAlign = %u, "
"BitsPerSample = %u, Size = %u", wfex.wFormatTag,
wfex.nChannels, wfex.nSamplesPerSec, wfex.nAvgBytesPerSec,
wfex.nBlockAlign, wfex.wBitsPerSample, wfex.cbSize);
if (wfex.wFormatTag == 0x0161) {
codec_name = "Windows Media Audio";
version = 2;
} else if (wfex.wFormatTag == 0x0162) {
codec_name = "Windows Media Audio 9 Pro";
version = 3;
} else if (wfex.wFormatTag == 0x0163) {
codec_name = "Windows Media Audio 9 Lossless";
/* is that correct? gstffmpegcodecmap.c is missing it, but
* fluendo codec seems to support it */
version = 4;
}
gst_caps_set_simple (stream->caps,
"wmaversion", G_TYPE_INT, version,
"block_align", G_TYPE_INT, wfex.nBlockAlign,
"bitrate", G_TYPE_INT, wfex.nAvgBytesPerSec,
"width", G_TYPE_INT, wfex.wBitsPerSample,
"depth", G_TYPE_INT, wfex.wBitsPerSample, NULL);
if (size > wfex.cbSize) {
GstBuffer *buf;
buf = gst_buffer_new_and_alloc (size - wfex.cbSize);
gst_buffer_fill (buf, 0, wfex_data + 8 + wfex.cbSize,
size - wfex.cbSize);
gst_caps_set_simple (stream->caps,
"codec_data", GST_TYPE_BUFFER, buf, NULL);
gst_buffer_unref (buf);
} else {
GST_WARNING_OBJECT (qtdemux, "no codec data");
}
if (codec_name) {
g_free (codec);
codec = g_strdup (codec_name);
}
break;
}
default:
break;
}
len -= size + 8;
wfex_data += size + 8;
}
break;
}
default:
break;
}
@ -11177,6 +11284,7 @@ qtdemux_audio_caps (GstQTDemux * qtdemux, QtDemuxStream * stream,
_codec ("QualComm PureVoice");
caps = gst_caps_from_string ("audio/qcelp");
break;
case GST_MAKE_FOURCC ('w', 'm', 'a', ' '):
case FOURCC_owma:
_codec ("WMA");
caps = gst_caps_new_empty_simple ("audio/x-wma");