theoradec: parse and use codec_data in the caps

Parse the codec_data in the caps and use this as the headers.
Fixes #574169.

1 files changed, 46 insertions, 1 deletions

diff --git a/ext/theora/theoradec.c b/ext/theora/theoradec.c
index baefd2021..d02c64b99 100644
--- a/ext/theora/theoradec.c
+++ b/ext/theora/theoradec.c
@@ -741,6 +741,7 @@ theora_dec_setcaps (GstPad * pad, GstCaps * caps)
 {
   GstTheoraDec *dec;
   GstStructure *s;
+  const GValue *codec_data;
 
   dec = GST_THEORA_DEC (gst_pad_get_parent (pad));
 
@@ -750,6 +751,49 @@ theora_dec_setcaps (GstPad * pad, GstCaps * caps)
   dec->have_par = gst_structure_get_fraction (s, "pixel-aspect-ratio",
       &dec->par_num, &dec->par_den);
 
+  if ((codec_data = gst_structure_get_value (s, "codec_data"))) {
+    if (G_VALUE_TYPE (codec_data) == GST_TYPE_BUFFER) {
+      GstBuffer *buffer;
+      guint8 *data;
+      guint size;
+      guint offset;
+
+      buffer = gst_value_get_buffer (codec_data);
+
+      offset = 0;
+      size = GST_BUFFER_SIZE (buffer);
+      data = GST_BUFFER_DATA (buffer);
+
+      while (size > 2) {
+        guint psize;
+        GstBuffer *buf;
+
+        psize = (data[0] << 8) | data[1];
+        /* skip header */
+        data += 2;
+        size -= 2;
+        offset += 2;
+
+        /* make sure we don't read too much */
+        psize = MIN (psize, size);
+
+        buf = gst_buffer_create_sub (buffer, offset, psize);
+
+        /* first buffer is a discont buffer */
+        if (offset == 2)
+          GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
+
+        /* now feed it to the decoder we can ignore the error */
+        theora_dec_chain (pad, buf);
+
+        /* skip the data */
+        size -= psize;
+        data += psize;
+        offset += psize;
+      }
+    }
+  }
+
   gst_object_unref (dec);
 
   return TRUE;
@@ -1132,7 +1176,8 @@ theora_handle_data_packet (GstTheoraDec * dec, ogg_packet * packet,
   stride_y = GST_ROUND_UP_4 (width);
   stride_uv = GST_ROUND_UP_8 (width) / 2;
 
-  out_size = stride_y * GST_ROUND_UP_2 (height) + stride_uv * GST_ROUND_UP_2 (height);
+  out_size =
+      stride_y * GST_ROUND_UP_2 (height) + stride_uv * GST_ROUND_UP_2 (height);
 
   /* now copy over the area contained in offset_x,offset_y,
    * frame_width, frame_height */