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From b5605b7ce31c43bc29d15507389d980d09eb914a Mon Sep 17 00:00:00 2001
From: Kazunori Kobayashi <kkobayas@igel.co.jp>
Date: Mon, 17 Jun 2013 17:41:05 +0900
Subject: [PATCH 08/14] omxwmvdec: support VC-1 stream decoding
The input sequence header must be sent to the REL OMX component before
pushing the frame data according to the spec.
This patch sets codec_data to the the sequence header first,
then the processing keeps being passed with doing nothing.
Only the Simple/Main profiles are supported by this patch.
Advanced profile isn't supported yet.
---
omx/gstomxwmvdec.c | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 50 insertions(+)
diff --git a/omx/gstomxwmvdec.c b/omx/gstomxwmvdec.c
index 64460d9..0f8f2db 100644
--- a/omx/gstomxwmvdec.c
+++ b/omx/gstomxwmvdec.c
@@ -34,12 +34,16 @@ static gboolean gst_omx_wmv_dec_is_format_change (GstOMXVideoDec * dec,
GstOMXPort * port, GstVideoCodecState * state);
static gboolean gst_omx_wmv_dec_set_format (GstOMXVideoDec * dec,
GstOMXPort * port, GstVideoCodecState * state);
+static GstFlowReturn gst_omx_wmv_dec_prepare_frame (GstOMXVideoDec * self,
+ GstVideoCodecFrame * frame);
enum
{
PROP_0
};
+#define SEQ_PARAM_BUF_SIZE 24
+
/* class initialization */
#define DEBUG_INIT \
@@ -58,6 +62,8 @@ gst_omx_wmv_dec_class_init (GstOMXWMVDecClass * klass)
videodec_class->is_format_change =
GST_DEBUG_FUNCPTR (gst_omx_wmv_dec_is_format_change);
videodec_class->set_format = GST_DEBUG_FUNCPTR (gst_omx_wmv_dec_set_format);
+ videodec_class->prepare_frame =
+ GST_DEBUG_FUNCPTR (gst_omx_wmv_dec_prepare_frame);
videodec_class->cdata.default_sink_template_caps = "video/x-wmv, "
"width=(int) [1,MAX], " "height=(int) [1,MAX]";
@@ -96,3 +102,47 @@ gst_omx_wmv_dec_set_format (GstOMXVideoDec * dec, GstOMXPort * port,
return ret;
}
+
+static GstFlowReturn
+gst_omx_wmv_dec_prepare_frame (GstOMXVideoDec * self,
+ GstVideoCodecFrame * frame)
+{
+ if (self->codec_data) {
+ OMX_PARAM_PORTDEFINITIONTYPE port_def;
+ guint32 *SeqHdrBuf;
+ guint8 *u8ptr;
+ GstMapInfo info;
+
+ gst_omx_port_get_port_definition (self->dec_in_port, &port_def);
+
+ if (!gst_buffer_map (self->codec_data, &info, GST_MAP_READ)) {
+ GST_ERROR_OBJECT (self, "Failed to create a gstbuffer mapping");
+ return GST_FLOW_ERROR;
+ }
+
+ SeqHdrBuf = (guint32 *) g_malloc (SEQ_PARAM_BUF_SIZE);
+ if (SeqHdrBuf == NULL) {
+ GST_ERROR_OBJECT (self, "Failed to g_malloc");
+ return GST_FLOW_ERROR;
+ }
+
+ /* create sequence header */
+ SeqHdrBuf[0] = 0xc5000000;
+ SeqHdrBuf[1] = 0x00000004;
+ u8ptr = (guint8 *) & SeqHdrBuf[2];
+ u8ptr[0] = info.data[0];
+ u8ptr[1] = info.data[1];
+ u8ptr[2] = info.data[2];
+ u8ptr[3] = info.data[3];
+ SeqHdrBuf[3] = port_def.format.video.nFrameHeight;
+ SeqHdrBuf[4] = port_def.format.video.nFrameWidth;
+ SeqHdrBuf[5] = 0x0000000c;
+
+ gst_buffer_unmap (self->codec_data, &info);
+
+ gst_buffer_replace (&self->codec_data, NULL);
+ self->codec_data = gst_buffer_new_wrapped (SeqHdrBuf, SEQ_PARAM_BUF_SIZE);
+ }
+
+ return GST_FLOW_OK;
+}
--
1.8.1.2
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