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/*
* GStreamer
* Copyright (c) 2010, Texas Instruments Incorporated
*
* 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
*/
/**
* SECTION:element-ducativc1dec
*
* FIXME:Describe ducativc1dec here.
*
* <refsect2>
* <title>Example launch line</title>
* |[
* gst-launch -v -m fakesrc ! ducativc1dec ! fakesink silent=TRUE
* ]|
* </refsect2>
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include "gstducativc1dec.h"
#define PADX 32
#define PADY 40
GST_BOILERPLATE (GstDucatiVC1Dec, gst_ducati_vc1dec, GstDucatiVidDec,
GST_TYPE_DUCATIVIDDEC);
static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("video/x-wmv, "
"wmvversion = (int)[ 2, 3 ], "
"format = (fourcc){ WVC1, WMV3, WMV2, WMV1 }, "
"width = (int)[ 16, 2048 ], "
"height = (int)[ 16, 2048 ], "
"framerate = (fraction)[ 0, max ];")
);
/* GstDucatiVidDec vmethod implementations */
static gboolean
gst_ducati_vc1dec_parse_caps (GstDucatiVidDec * vdec, GstStructure * s)
{
GstDucatiVC1Dec *self = GST_DUCATIVC1DEC (vdec);
if (parent_class->parse_caps (vdec, s)) {
guint32 format;
gboolean ret = gst_structure_get_fourcc (s, "format", &format);
if (ret) {
switch (format) {
case GST_MAKE_FOURCC ('W', 'V', 'C', '1'):
self->level = 4;
break;
case GST_MAKE_FOURCC ('W', 'M', 'V', '3'):
self->level = 3;
break;
case GST_MAKE_FOURCC ('W', 'M', 'V', '2'):
self->level = 2;
break;
case GST_MAKE_FOURCC ('W', 'M', 'V', '1'):
self->level = 1;
break;
default:
ret = FALSE;
break;
}
}
return ret;
}
GST_INFO_OBJECT (vdec, "level %d", self->level);
return FALSE;
}
static void
gst_ducati_vc1dec_update_buffer_size (GstDucatiVidDec * self)
{
gint w = self->width;
gint h = self->height;
/* calculate output buffer parameters: */
self->padded_width = ALIGN2 (w + (2 * PADX), 7);
self->padded_height = (ALIGN2 (h / 2, 4) * 2) + 2 * PADY;
self->min_buffers = 8;
}
static gboolean
gst_ducati_vc1dec_allocate_params (GstDucatiVidDec * self, gint params_sz,
gint dynparams_sz, gint status_sz, gint inargs_sz, gint outargs_sz)
{
gboolean ret = parent_class->allocate_params (self,
sizeof (IVC1VDEC_Params), sizeof (IVC1VDEC_DynamicParams),
sizeof (IVC1VDEC_Status), sizeof (IVC1VDEC_InArgs),
sizeof (IVC1VDEC_OutArgs));
if (ret) {
IVC1VDEC_Params *params = (IVC1VDEC_Params *) self->params;
self->params->maxBitRate = 45000000;
self->params->displayDelay = IVIDDEC3_DISPLAY_DELAY_AUTO;
/* this indicates whether buffers are prefixed with the frame layer struct
* or not. See Table 266: Frame Layer Data Structure from the spec */
params->frameLayerDataPresentFlag = TRUE;
/* enable concealment */
params->ErrorConcealmentON = 1;
/* codec wants lateAcquireArg = -1 */
self->dynParams->lateAcquireArg = -1;
}
return ret;
}
static GstBuffer *
gst_ducati_vc1dec_push_input (GstDucatiVidDec * vdec, GstBuffer * buf)
{
GstDucatiVC1Dec *self = GST_DUCATIVC1DEC (vdec);
if (G_UNLIKELY (vdec->first_in_buffer) && vdec->codec_data) {
if (self->level == 4) {
/* for VC-1 Advanced Profile, strip off first byte, and
* send rest of codec_data unmodified;
*/
push_input (vdec, GST_BUFFER_DATA (vdec->codec_data) + 1,
GST_BUFFER_SIZE (vdec->codec_data) - 1);
} else {
guint32 val;
/* for VC-1 Simple and Main Profile, build the Table 265 Sequence
* Layer Data Structure header (refer to VC-1 spec, Annex L):
*/
val = 0xc5ffffff; /* we don't know the number of frames */
push_input (vdec, (guint8 *) & val, 4);
/* STRUCT_C (preceded by length).. see Table 263, 264 */
val = GST_BUFFER_SIZE (vdec->codec_data);
push_input (vdec, (guint8 *) & val, 4);
push_input (vdec, GST_BUFFER_DATA (vdec->codec_data), val);
/* STRUCT_A.. see Table 260 and Annex J.2 */
push_input (vdec, (guint8 *) & vdec->height, 4);
push_input (vdec, (guint8 *) & vdec->width, 4);
val = 0x0000000c;
push_input (vdec, (guint8 *) & val, 4);
/* STRUCT_B.. see Table 261, 262 */
val = 0x00000000; /* not sure how to populate, but codec ignores anyways */
push_input (vdec, (guint8 *) & val, 4);
push_input (vdec, (guint8 *) & val, 4);
push_input (vdec, (guint8 *) & val, 4);
}
}
/* VC-1 Advanced profile needs start-code prepended: */
if (self->level == 4) {
static guint8 sc[] = { 0x00, 0x00, 0x01, 0x0d }; /* start code */
push_input (vdec, sc, sizeof (sc));
}
push_input (vdec, GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
gst_buffer_unref (buf);
return NULL;
}
/* GObject vmethod implementations */
static void
gst_ducati_vc1dec_base_init (gpointer gclass)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (gclass);
gst_element_class_set_details_simple (element_class,
"DucatiVC1Dec",
"Codec/Decoder/Video",
"Decodes video in WMV/VC-1 format with ducati",
"Rob Clark <rob@ti.com>");
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&sink_factory));
}
static void
gst_ducati_vc1dec_class_init (GstDucatiVC1DecClass * klass)
{
GstDucatiVidDecClass *bclass = GST_DUCATIVIDDEC_CLASS (klass);
bclass->codec_name = "ivahd_vc1vdec";
bclass->parse_caps =
GST_DEBUG_FUNCPTR (gst_ducati_vc1dec_parse_caps);
bclass->update_buffer_size =
GST_DEBUG_FUNCPTR (gst_ducati_vc1dec_update_buffer_size);
bclass->allocate_params =
GST_DEBUG_FUNCPTR (gst_ducati_vc1dec_allocate_params);
bclass->push_input =
GST_DEBUG_FUNCPTR (gst_ducati_vc1dec_push_input);
}
static void
gst_ducati_vc1dec_init (GstDucatiVC1Dec * self,
GstDucatiVC1DecClass * gclass)
{
}
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