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rmdemux: descramble SIPR before pushing out

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Collect and descramble the SIPR packets before pushing.
Descramble ATRAC audio.

Fixes #618098
This commit is contained in:
Wim Taymans 2010-05-13 17:57:57 +02:00
parent 0b73505c61
commit a68951f0bb
1 changed files with 80 additions and 7 deletions
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87
gst/realmedia/rmdemux.c
View file

@ -42,6 +42,8 @@
#define MAX_FRAGS 256
static const guint8 sipr_subpk_size[4] = { 29, 19, 37, 20 };
typedef struct _GstRMDemuxIndex GstRMDemuxIndex;
struct _GstRMDemuxStream
@ -1387,6 +1389,9 @@ gst_rmdemux_add_stream (GstRMDemux * rmdemux, GstRMDemuxStream * stream)
case GST_RM_AUD_ATRC:
codec_name = "Sony ATRAC3";
stream_caps = gst_caps_new_simple ("audio/x-vnd.sony.atrac3", NULL);
stream->needs_descrambling = TRUE;
stream->subpackets_needed = stream->height;
stream->subpackets = NULL;
break;
/* RealAudio G2 audio */
@ -1400,15 +1405,28 @@ gst_rmdemux_add_stream (GstRMDemux * rmdemux, GstRMDemuxStream * stream)
/* RALF is lossless */
case GST_RM_AUD_RALF:
/* FIXME: codec_name = */
codec_name = "Real Audio Lossless (RALF)";
GST_DEBUG_OBJECT (rmdemux, "RALF");
stream_caps = gst_caps_new_simple ("audio/x-ralf-mpeg4-generic", NULL);
break;
/* Sipro/ACELP.NET Voice Codec (MIME unknown) */
case GST_RM_AUD_SIPR:
/* FIXME: codec_name = */
if (stream->flavor > 3) {
GST_WARNING_OBJECT (rmdemux, "bad SIPR flavor %d, freeing it",
stream->flavor);
g_free (stream);
goto beach;
}
codec_name = "Sipro/ACELP.NET Voice";
GST_DEBUG_OBJECT (rmdemux, "SIPR");
stream_caps = gst_caps_new_simple ("audio/x-sipro", NULL);
stream->needs_descrambling = TRUE;
stream->subpackets_needed = stream->height;
stream->subpackets = NULL;
stream->leaf_size = sipr_subpk_size[stream->flavor];
break;
default:
@ -1730,7 +1748,6 @@ gst_rmdemux_parse_mdpr (GstRMDemux * rmdemux, const guint8 * data, int length)
break;
}
}
/* 14_4, 28_8, cook, dnet, sipr, raac, racp, ralf, atrc */
GST_DEBUG_OBJECT (rmdemux,
"Audio stream with rate=%d sample_width=%d n_channels=%d",
@ -1905,8 +1922,7 @@ gst_rmdemux_stream_clear_cached_subpackets (GstRMDemux * rmdemux,
}
static GstFlowReturn
gst_rmdemux_descramble_cook_audio (GstRMDemux * rmdemux,
GstRMDemuxStream * stream)
gst_rmdemux_descramble_audio (GstRMDemux * rmdemux, GstRMDemuxStream * stream)
{
GstFlowReturn ret;
GstBuffer *outbuf;
@ -2036,6 +2052,59 @@ gst_rmdemux_descramble_mp4a_audio (GstRMDemux * rmdemux,
return res;
}
static GstFlowReturn
gst_rmdemux_descramble_sipr_audio (GstRMDemux * rmdemux,
GstRMDemuxStream * stream)
{
GstFlowReturn ret;
GstBuffer *outbuf;
guint packet_size = stream->packet_size;
guint height = stream->subpackets->len;
guint leaf_size = stream->leaf_size;
guint p;
g_assert (stream->height == height);
GST_LOG ("packet_size = %u, leaf_size = %u, height= %u", packet_size,
leaf_size, height);
ret = gst_pad_alloc_buffer_and_set_caps (stream->pad,
GST_BUFFER_OFFSET_NONE, height * packet_size,
GST_PAD_CAPS (stream->pad), &outbuf);
if (ret != GST_FLOW_OK)
goto done;
for (p = 0; p < height; ++p) {
GstBuffer *b = g_ptr_array_index (stream->subpackets, p);
guint8 *b_data = GST_BUFFER_DATA (b);
if (p == 0)
GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (b);
memcpy (GST_BUFFER_DATA (outbuf) + packet_size * p, b_data, packet_size);
}
GST_LOG_OBJECT (rmdemux, "pushing buffer timestamp %" GST_TIME_FORMAT,
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (outbuf)));
if (stream->discont) {
GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DISCONT);
stream->discont = FALSE;
}
outbuf = gst_rm_utils_descramble_sipr_buffer (outbuf);
gst_buffer_set_caps (outbuf, GST_PAD_CAPS (stream->pad));
ret = gst_pad_push (stream->pad, outbuf);
done:
gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
return ret;
}
static GstFlowReturn
gst_rmdemux_handle_scrambled_packet (GstRMDemux * rmdemux,
GstRMDemuxStream * stream, GstBuffer * buf, gboolean keyframe)
@ -2064,12 +2133,16 @@ gst_rmdemux_handle_scrambled_packet (GstRMDemux * rmdemux,
ret = gst_rmdemux_descramble_dnet_audio (rmdemux, stream);
break;
case GST_RM_AUD_COOK:
ret = gst_rmdemux_descramble_cook_audio (rmdemux, stream);
case GST_RM_AUD_ATRC:
ret = gst_rmdemux_descramble_audio (rmdemux, stream);
break;
case GST_RM_AUD_RAAC:
case GST_RM_AUD_RACP:
ret = gst_rmdemux_descramble_mp4a_audio (rmdemux, stream);
break;
case GST_RM_AUD_SIPR:
ret = gst_rmdemux_descramble_sipr_audio (rmdemux, stream);
break;
default:
g_assert_not_reached ();
}