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/*
* Copyright (C) 2011, Hewlett-Packard Development Company, L.P.
* Author: Sebastian Dröge <sebastian.droege@collabora.co.uk>, Collabora Ltd.
* Copyright (c) 2014, NVIDIA CORPORATION. All rights reserved.
*
* 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 "gstomxwmvdec.h"
GST_DEBUG_CATEGORY_STATIC (gst_omx_wmv_dec_debug_category);
#define GST_CAT_DEFAULT gst_omx_wmv_dec_debug_category
/* prototypes */
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);
#ifdef USE_OMX_TARGET_TEGRA
static GstFlowReturn gst_omx_wmv_dec_prepare_frame (GstOMXVideoDec * self,
GstVideoCodecFrame * frame);
#endif
enum
{
PROP_0
};
/* class initialization */
#define DEBUG_INIT \
GST_DEBUG_CATEGORY_INIT (gst_omx_wmv_dec_debug_category, "omxwmvdec", 0, \
"debug category for gst-omx video decoder base class");
G_DEFINE_TYPE_WITH_CODE (GstOMXWMVDec, gst_omx_wmv_dec,
GST_TYPE_OMX_VIDEO_DEC, DEBUG_INIT);
static void
gst_omx_wmv_dec_class_init (GstOMXWMVDecClass * klass)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
GstOMXVideoDecClass *videodec_class = GST_OMX_VIDEO_DEC_CLASS (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);
#ifdef USE_OMX_TARGET_TEGRA
videodec_class->prepare_frame =
GST_DEBUG_FUNCPTR (gst_omx_wmv_dec_prepare_frame);
#endif
videodec_class->cdata.default_sink_template_caps = "video/x-wmv, "
"wmvversion= (int) 3, "
"format = (string) {WMV3, WVC1}, "
"width=(int) [1,MAX], " "height=(int) [1,MAX]";
gst_element_class_set_static_metadata (element_class,
"OpenMAX WMV Video Decoder",
"Codec/Decoder/Video",
"Decode WMV video streams",
"Sebastian Dröge <sebastian.droege@collabora.co.uk>");
gst_omx_set_default_role (&videodec_class->cdata, "video_decoder.wmv");
}
static void
gst_omx_wmv_dec_init (GstOMXWMVDec * self)
{
self->wvc1 = FALSE;
}
static gboolean
gst_omx_wmv_dec_is_format_change (GstOMXVideoDec * dec,
GstOMXPort * port, GstVideoCodecState * state)
{
return FALSE;
}
static gboolean
gst_omx_wmv_dec_set_format (GstOMXVideoDec * dec, GstOMXPort * port,
GstVideoCodecState * state)
{
gboolean ret;
OMX_PARAM_PORTDEFINITIONTYPE port_def;
#ifdef USE_OMX_TARGET_TEGRA
GstBuffer *buf;
gint size, width, height, index = 0;
const gchar *format_string;
GstMapInfo read_map = GST_MAP_INFO_INIT;
GstMapInfo write_map = GST_MAP_INFO_INIT;
GstOMXWMVDec *self = GST_OMX_WMV_DEC (dec);
GstCaps *caps = state->caps;
GstStructure *structure = gst_caps_get_structure (caps, 0);
format_string = gst_structure_get_string (structure, "format");
size = gst_buffer_get_size (state->codec_data);
if (!strcmp (format_string, "WVC1") || !strcmp (format_string, "wvc1")) {
self->wvc1 = TRUE;
buf = gst_buffer_make_writable (state->codec_data);
/*openmax decoder want first byte to be skipped */
gst_buffer_resize (buf, 1, -1);
gst_buffer_replace (&state->codec_data, buf);
g_print ("New buffer size = %d\n", gst_buffer_get_size (buf));
} else if (size > 3) {
gst_buffer_map (state->codec_data, &read_map, GST_MAP_READ);
if (read_map.data[3] != 0xc5) {
//Lets code Annex J and L of the SMPTE VC-1 specification
char seq_l1[] = { 0xff, 0xff, 0xff, 0xc5 };
char seq_l2[] = { 0x4, 0, 0, 0 };
char seq_l3[] = { 0xc, 0, 0, 0 };
gst_structure_get_int (structure, "width", &width);
gst_structure_get_int (structure, "height", &height);
buf = gst_buffer_new_allocate (NULL, size + 32, NULL);
gst_buffer_map (buf, &write_map, GST_MAP_WRITE);
memcpy (write_map.data + index, seq_l1, 4);
index += 4;
memcpy (write_map.data + index, seq_l2, 4);
index += 4;
memcpy (write_map.data + index, read_map.data, 4);
index += 4;
memcpy (write_map.data + index, &height, 4);
index += 4;
memcpy (write_map.data + index, &width, 4);
index += 4;
memcpy (write_map.data + index, seq_l3, 4);
index += 4;
memset (write_map.data + index, 0, 12);
gst_buffer_replace (&state->codec_data, buf);
gst_buffer_unmap (buf, &write_map);
}
gst_buffer_unmap (state->codec_data, &read_map);
}
#endif
gst_omx_port_get_port_definition (port, &port_def);
port_def.format.video.eCompressionFormat = OMX_VIDEO_CodingWMV;
ret = gst_omx_port_update_port_definition (port, &port_def) == OMX_ErrorNone;
return ret;
}
#ifdef USE_OMX_TARGET_TEGRA
static GstFlowReturn
gst_omx_wmv_dec_prepare_frame (GstOMXVideoDec * dec, GstVideoCodecFrame * frame)
{
GstOMXWMVDec *self = GST_OMX_WMV_DEC (dec);
GstMemory *mem = NULL;
GstMapInfo read_map = GST_MAP_INFO_INIT;
GstMapInfo write_map = GST_MAP_INFO_INIT;
guint32 start_code;
if (self->wvc1) {
//Handle WVC1 format
gst_buffer_map (frame->input_buffer, &read_map, GST_MAP_READ);
start_code =
(read_map.data[0] << 24) | (read_map.data[1] << 16) | (read_map.
data[2] << 8) | read_map.data[3];
gst_buffer_unmap (frame->input_buffer, &read_map);
if (start_code != 0x10D && start_code != 0x10E) {
mem = gst_allocator_alloc (NULL, 4, NULL);
gst_memory_map (mem, &write_map, GST_MAP_WRITE);
write_map.data[0] = 0;
write_map.data[1] = 0;
write_map.data[2] = 1;
write_map.data[3] = 0xD;
gst_memory_unmap (mem, &write_map);
gst_buffer_prepend_memory (frame->input_buffer, mem);
}
}
return GST_FLOW_OK;
}
#endif
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