1 files changed, 156 insertions, 0 deletions
diff --git a/omx/gstomxtheoradec.c b/omx/gstomxtheoradec.c
new file mode 100644
index 0000000..e1410df
--- /dev/null
+++ b/omx/gstomxtheoradec.c
@@ -0,0 +1,156 @@
+/*
+ * Copyright (C) 2011, Hewlett-Packard Development Company, L.P.
+ *   Author: Sebastian Dröge <sebastian.droege@collabora.co.uk>, Collabora Ltd.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation
+ * version 2.1 of the License.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <gst/gst.h>
+
+#include "gstomxtheoradec.h"
+
+GST_DEBUG_CATEGORY_STATIC (gst_omx_theora_dec_debug_category);
+#define GST_CAT_DEFAULT gst_omx_theora_dec_debug_category
+
+/* prototypes */
+static gboolean gst_omx_theora_dec_is_format_change (GstOMXVideoDec * dec,
+    GstOMXPort * port, GstVideoCodecState * state);
+static gboolean gst_omx_theora_dec_set_format (GstOMXVideoDec * dec,
+    GstOMXPort * port, GstVideoCodecState * state);
+static GstFlowReturn gst_omx_theora_dec_handle_frame (GstVideoDecoder * decoder,
+    GstVideoCodecFrame * frame);
+static gboolean gst_omx_theora_dec_stop (GstVideoDecoder * decoder);
+
+enum
+{
+  PROP_0
+};
+
+/* class initialization */
+
+#define DEBUG_INIT \
+  GST_DEBUG_CATEGORY_INIT (gst_omx_theora_dec_debug_category, "omxtheoradec", 0, \
+      "debug category for gst-omx video decoder base class");
+
+G_DEFINE_TYPE_WITH_CODE (GstOMXTheoraDec, gst_omx_theora_dec,
+    GST_TYPE_OMX_VIDEO_DEC, DEBUG_INIT);
+
+static void
+gst_omx_theora_dec_class_init (GstOMXTheoraDecClass * klass)
+{
+  GstVideoDecoderClass *gstvideodec_class = GST_VIDEO_DECODER_CLASS (klass);
+  GstOMXVideoDecClass *videodec_class = GST_OMX_VIDEO_DEC_CLASS (klass);
+  GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
+
+  videodec_class->is_format_change =
+      GST_DEBUG_FUNCPTR (gst_omx_theora_dec_is_format_change);
+  videodec_class->set_format =
+      GST_DEBUG_FUNCPTR (gst_omx_theora_dec_set_format);
+
+  videodec_class->cdata.default_sink_template_caps = "video/x-theora";
+
+  gstvideodec_class->handle_frame = gst_omx_theora_dec_handle_frame;
+  gstvideodec_class->stop = gst_omx_theora_dec_stop;
+
+  gst_element_class_set_static_metadata (element_class,
+      "OpenMAX THEORA Video Decoder",
+      "Codec/Decoder/Video",
+      "Decode THEORA video streams",
+      "Sebastian Dröge <sebastian.droege@collabora.co.uk>");
+
+  gst_omx_set_default_role (&videodec_class->cdata, "video_decoder.theora");
+}
+
+static void
+gst_omx_theora_dec_init (GstOMXTheoraDec * self)
+{
+}
+
+static gboolean
+gst_omx_theora_dec_is_format_change (GstOMXVideoDec * dec,
+    GstOMXPort * port, GstVideoCodecState * state)
+{
+  return FALSE;
+}
+
+static gboolean
+gst_omx_theora_dec_set_format (GstOMXVideoDec * dec, GstOMXPort * port,
+    GstVideoCodecState * state)
+{
+  gboolean ret;
+  OMX_PARAM_PORTDEFINITIONTYPE port_def;
+
+  gst_omx_port_get_port_definition (port, &port_def);
+  port_def.format.video.eCompressionFormat = OMX_VIDEO_CodingTheora;
+  ret = gst_omx_port_update_port_definition (port, &port_def) == OMX_ErrorNone;
+
+  return ret;
+}
+
+static GstFlowReturn
+gst_omx_theora_dec_handle_frame (GstVideoDecoder * decoder,
+    GstVideoCodecFrame * frame)
+{
+  GstOMXTheoraDec *self = GST_OMX_THEORA_DEC (decoder);
+
+  if (GST_BUFFER_FLAG_IS_SET (frame->input_buffer, GST_BUFFER_FLAG_HEADER)) {
+    guint16 size;
+    GstBuffer *sbuf;
+
+    if (!self->header) {
+      self->header = gst_buffer_new ();
+      gst_buffer_copy_into (self->header, frame->input_buffer,
+          GST_BUFFER_COPY_FLAGS | GST_BUFFER_COPY_TIMESTAMPS, 0, -1);
+    }
+
+    size = gst_buffer_get_size (frame->input_buffer);
+    size = GUINT16_TO_BE (size);
+    sbuf = gst_buffer_new_and_alloc (2);
+    gst_buffer_fill (sbuf, 0, &size, 2);
+    self->header = gst_buffer_append (self->header, sbuf);
+
+    self->header =
+        gst_buffer_append (self->header, gst_buffer_ref (frame->input_buffer));
+
+    gst_video_decoder_drop_frame (GST_VIDEO_DECODER (self), frame);
+
+    return GST_FLOW_OK;
+  }
+
+  if (self->header) {
+    gst_buffer_replace (&GST_OMX_VIDEO_DEC (self)->codec_data, self->header);
+    gst_buffer_unref (self->header);
+    self->header = NULL;
+  }
+
+  return
+      GST_VIDEO_DECODER_CLASS (gst_omx_theora_dec_parent_class)->handle_frame
+      (GST_VIDEO_DECODER (self), frame);
+}
+
+static gboolean
+gst_omx_theora_dec_stop (GstVideoDecoder * decoder)
+{
+  GstOMXTheoraDec *self = GST_OMX_THEORA_DEC (decoder);
+
+  gst_buffer_replace (&self->header, NULL);
+
+  return TRUE;
+}