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-rw-r--r--common/recipes-multimedia/gstreamer/gst-plugins-ugly/0001-asfdemux-asfpacket-set-frame-start-code-to-VC-1-adva.patch99
1 files changed, 99 insertions, 0 deletions
diff --git a/common/recipes-multimedia/gstreamer/gst-plugins-ugly/0001-asfdemux-asfpacket-set-frame-start-code-to-VC-1-adva.patch b/common/recipes-multimedia/gstreamer/gst-plugins-ugly/0001-asfdemux-asfpacket-set-frame-start-code-to-VC-1-adva.patch
new file mode 100644
index 0000000..d065c7c
--- /dev/null
+++ b/common/recipes-multimedia/gstreamer/gst-plugins-ugly/0001-asfdemux-asfpacket-set-frame-start-code-to-VC-1-adva.patch
@@ -0,0 +1,99 @@
+From 258bf9862e5b7179562f0cae9fb470f6486dca3a Mon Sep 17 00:00:00 2001
+From: Kazunori Kobayashi <kkobayas@igel.co.jp>
+Date: Thu, 12 Jul 2012 12:08:15 +0900
+Subject: [PATCH] asfdemux/asfpacket: set frame start code to VC-1 advanced
+ profile stream
+
+VC-1 advanced profile constrains the bitstream format to pair
+the frame data with the frame start code.
+---
+ gst/asfdemux/asfpacket.c | 36 +++++++++++++++++++++++++++++++++---
+ 1 file changed, 33 insertions(+), 3 deletions(-)
+
+diff --git a/gst/asfdemux/asfpacket.c b/gst/asfdemux/asfpacket.c
+index 552a559..77209f1 100644
+--- a/gst/asfdemux/asfpacket.c
++++ b/gst/asfdemux/asfpacket.c
+@@ -71,9 +71,10 @@ asf_packet_read_varlen_int (guint lentype_flags, guint lentype_bit_offset,
+
+ static GstBuffer *
+ asf_packet_create_payload_buffer (AsfPacket * packet, const guint8 ** p_data,
+- guint * p_size, guint payload_len)
++ guint * p_size, guint payload_len, gboolean need_st_code)
+ {
+ guint off;
++ guint8 *st_code;
+
+ g_assert (payload_len <= *p_size);
+
+@@ -83,6 +84,21 @@ asf_packet_create_payload_buffer (AsfPacket * packet, const guint8 ** p_data,
+ *p_data += payload_len;
+ *p_size -= payload_len;
+
++ /* set start code for VC-1 advanced profile */
++ if (need_st_code && off >= 4) {
++ st_code = GST_BUFFER_DATA (packet->buf) + (off - 4);
++ /* check if this packet has a start code */
++ if (st_code[4] != 0x00 || st_code[5] != 0x00 || st_code[6] != 0x01 ||
++ st_code[7] != 0x0d) {
++ st_code[0] = 0x00;
++ st_code[1] = 0x00;
++ st_code[2] = 0x01;
++ st_code[3] = 0x0d;
++
++ return gst_buffer_create_sub (packet->buf, off - 4, payload_len + 4);
++ }
++ }
++
+ return gst_buffer_create_sub (packet->buf, off, payload_len);
+ }
+
+@@ -274,6 +290,9 @@ gst_asf_demux_parse_payload (GstASFDemux * demux, AsfPacket * packet,
+ gboolean is_compressed;
+ guint payload_len;
+ guint stream_num;
++ GstStructure *structure;
++ guint32 fourcc;
++ gboolean need_st_code = FALSE;
+
+ if (G_UNLIKELY (*p_size < 1)) {
+ GST_WARNING_OBJECT (demux, "Short packet!");
+@@ -353,6 +372,17 @@ gst_asf_demux_parse_payload (GstASFDemux * demux, AsfPacket * packet,
+ return TRUE;
+ }
+
++ structure = gst_caps_get_structure (stream->caps, 0);
++ if (gst_structure_get_fourcc (structure, "format", &fourcc)) {
++ /*
++ * set start code for VC-1 advanced profile if fourcc is 'WVC1' and this
++ * packet is at the head of a payload.
++ */
++ if (fourcc == GST_MAKE_FOURCC ('W', 'V', 'C', '1')
++ && payload.mo_offset == 0)
++ need_st_code = TRUE;
++ }
++
+ if (G_UNLIKELY (!is_compressed)) {
+ GST_LOG_OBJECT (demux, "replicated data length: %u", payload.rep_data_len);
+
+@@ -384,7 +414,7 @@ gst_asf_demux_parse_payload (GstASFDemux * demux, AsfPacket * packet,
+ if ((stream = gst_asf_demux_get_stream (demux, stream_num))
+ && payload_len) {
+ payload.buf = asf_packet_create_payload_buffer (packet, p_data, p_size,
+- payload_len);
++ payload_len, need_st_code);
+
+ /* n-th fragment of a fragmented media object? */
+ if (payload.mo_offset != 0) {
+@@ -443,7 +473,7 @@ gst_asf_demux_parse_payload (GstASFDemux * demux, AsfPacket * packet,
+
+ if (G_LIKELY (sub_payload_len > 0)) {
+ payload.buf = asf_packet_create_payload_buffer (packet,
+- &payload_data, &payload_len, sub_payload_len);
++ &payload_data, &payload_len, sub_payload_len, need_st_code);
+
+ payload.ts = ts;
+ if (G_LIKELY (ts_delta))
+--
+1.7.9.5
+