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wavparse: support rf64 format

Browse source 
https://bugzilla.gnome.org/show_bug.cgi?id=735627
This commit is contained in:
Peter G. Baum 2014-08-27 18:55:18 +02:00 committed by Sebastian Dröge
parent bcbdcbf638
commit 5c838af300
2 changed files with 45 additions and 3 deletions
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46
gst/wavparse/gstwavparse.c
View file

@ -66,6 +66,10 @@ GST_DEBUG_CATEGORY_STATIC (wavparse_debug);
#define GST_BWF_TAG_link GST_MAKE_FOURCC ('l','i','n','k')
#define GST_BWF_TAG_axml GST_MAKE_FOURCC ('a','x','m','l')
/* Data size chunk of RF64,
* see http://tech.ebu.ch/docs/tech/tech3306-2009.pdf */
#define GST_RS64_TAG_DS64 GST_MAKE_FOURCC ('d','s','6','4')
static void gst_wavparse_dispose (GObject * object);
static gboolean gst_wavparse_sink_activate (GstPad * sinkpad,
@ -1024,6 +1028,31 @@ gst_wavparse_create_toc (GstWavParse * wav)
#define MAX_BUFFER_SIZE 4096
static gboolean
parse_ds64 (GstWavParse * wav, GstBuffer * buf)
{
GstMapInfo map;
guint32 dataSizeLow, dataSizeHigh;
guint32 sampleCountLow, sampleCountHigh;
gst_buffer_map (buf, &map, GST_MAP_READ);
dataSizeLow = GST_READ_UINT32_LE (map.data + 2 * 4);
dataSizeHigh = GST_READ_UINT32_LE (map.data + 3 * 4);
sampleCountLow = GST_READ_UINT32_LE (map.data + 4 * 4);
sampleCountHigh = GST_READ_UINT32_LE (map.data + 5 * 4);
gst_buffer_unmap (buf, &map);
if (dataSizeHigh != 0xFFFFFFFF && dataSizeLow != 0xFFFFFFFF) {
wav->datasize = ((guint64) dataSizeHigh << 32) | dataSizeLow;
}
if (sampleCountHigh != 0xFFFFFFFF && sampleCountLow != 0xFFFFFFFF) {
wav->fact = ((guint64) sampleCountHigh << 32) | sampleCountLow;
}
GST_DEBUG_OBJECT (wav, "Got 'ds64' TAG, datasize : %" G_GINT64_FORMAT
" fact: %" G_GINT64_FORMAT, wav->datasize, wav->fact);
return TRUE;
}
static GstFlowReturn
gst_wavparse_stream_headers (GstWavParse * wav)
{
@ -1078,6 +1107,13 @@ gst_wavparse_stream_headers (GstWavParse * wav)
continue;
}
if (tag == GST_RS64_TAG_DS64) {
if (!parse_ds64 (wav, buf))
goto fail;
else
continue;
}
if (tag != GST_RIFF_TAG_fmt)
goto invalid_wav;
@ -1238,6 +1274,11 @@ gst_wavparse_stream_headers (GstWavParse * wav)
}
wav->offset += 8;
wav->datastart = wav->offset;
/* use size from ds64 chunk if available */
if (size == -1 && wav->datasize > 0) {
GST_DEBUG_OBJECT (wav, "Using ds64 datasize");
size = wav->datasize;
}
/* If size is zero, then the data chunk probably actually extends to
the end of the file */
if (size == 0 && upstream_size) {
@ -1258,7 +1299,8 @@ gst_wavparse_stream_headers (GstWavParse * wav)
break;
}
case GST_RIFF_TAG_fact:{
if (wav->format != GST_RIFF_WAVE_FORMAT_MPEGL12 &&
if (wav->fact == 0 &&
wav->format != GST_RIFF_WAVE_FORMAT_MPEGL12 &&
wav->format != GST_RIFF_WAVE_FORMAT_MPEGL3) {
const guint data_size = 4;
@ -1295,7 +1337,7 @@ gst_wavparse_stream_headers (GstWavParse * wav)
wav->fact = GUINT32_FROM_LE (wav->fact);
gst_buffer_unref (buf);
}
GST_DEBUG_OBJECT (wav, "have fact %u", wav->fact);
GST_DEBUG_OBJECT (wav, "have fact %" G_GUINT64_FORMAT, wav->fact);
wav->offset += 8 + GST_ROUND_UP_2 (size);
break;
} else {

2
gst/wavparse/gstwavparse.h
View file

@ -86,7 +86,7 @@ struct _GstWavParse {
guint16 blockalign;
guint16 width;
guint32 av_bps;
guint32 fact;
guint64 fact;
/* real bps used or 0 when no bitrate is known */
guint32 bps;