gstreamer/omx/gstomxh264dec.c
Philippe Normand e0327521f6 omxh264dec: implement is_format_change
The omxvideodecoder class only checks some of the caps parameters but if
other fields change such as h264 profile and/or level it wouldn't trigger a
reconfiguration.

https://bugzilla.gnome.org/show_bug.cgi?id=752376
2015-08-16 15:48:16 +02:00

126 lines
3.9 KiB
C

/*
* 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 "gstomxh264dec.h"
GST_DEBUG_CATEGORY_STATIC (gst_omx_h264_dec_debug_category);
#define GST_CAT_DEFAULT gst_omx_h264_dec_debug_category
/* prototypes */
static gboolean gst_omx_h264_dec_is_format_change (GstOMXVideoDec * dec,
GstOMXPort * port, GstVideoCodecState * state);
static gboolean gst_omx_h264_dec_set_format (GstOMXVideoDec * dec,
GstOMXPort * port, GstVideoCodecState * state);
enum
{
PROP_0
};
/* class initialization */
#define DEBUG_INIT \
GST_DEBUG_CATEGORY_INIT (gst_omx_h264_dec_debug_category, "omxh264dec", 0, \
"debug category for gst-omx video decoder base class");
G_DEFINE_TYPE_WITH_CODE (GstOMXH264Dec, gst_omx_h264_dec,
GST_TYPE_OMX_VIDEO_DEC, DEBUG_INIT);
static void
gst_omx_h264_dec_class_init (GstOMXH264DecClass * 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_h264_dec_is_format_change);
videodec_class->set_format = GST_DEBUG_FUNCPTR (gst_omx_h264_dec_set_format);
videodec_class->cdata.default_sink_template_caps = "video/x-h264, "
"parsed=(boolean) true, "
"alignment=(string) au, "
"stream-format=(string) byte-stream, "
"width=(int) [1,MAX], " "height=(int) [1,MAX]";
gst_element_class_set_static_metadata (element_class,
"OpenMAX H.264 Video Decoder",
"Codec/Decoder/Video",
"Decode H.264 video streams",
"Sebastian Dröge <sebastian.droege@collabora.co.uk>");
gst_omx_set_default_role (&videodec_class->cdata, "video_decoder.avc");
}
static void
gst_omx_h264_dec_init (GstOMXH264Dec * self)
{
}
static gboolean
gst_omx_h264_dec_is_format_change (GstOMXVideoDec * dec,
GstOMXPort * port, GstVideoCodecState * state)
{
GstCaps *old_caps = NULL;
GstCaps *new_caps = state->caps;
GstStructure *old_structure, *new_structure;
const gchar *old_profile, *old_level, *new_profile, *new_level;
if (dec->input_state) {
old_caps = dec->input_state->caps;
}
if (!old_caps) {
return FALSE;
}
old_structure = gst_caps_get_structure (old_caps, 0);
new_structure = gst_caps_get_structure (new_caps, 0);
old_profile = gst_structure_get_string (old_structure, "profile");
old_level = gst_structure_get_string (old_structure, "level");
new_profile = gst_structure_get_string (new_structure, "profile");
new_level = gst_structure_get_string (new_structure, "level");
if (g_strcmp0 (old_profile, new_profile) != 0
|| g_strcmp0 (old_level, new_level) != 0) {
return TRUE;
}
return FALSE;
}
static gboolean
gst_omx_h264_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_CodingAVC;
ret = gst_omx_port_update_port_definition (port, &port_def) == OMX_ErrorNone;
return ret;
}