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27310365d5
This implements H264 encoding support using generic V4L2 interface. It is reported to work with Samsung MFC driver, IXM.6 CODA driver and Qualcomm mainline Venus driver. Other platform should be supported as none of this work is platform specific. The implementation consist of a GstV4l2VideoEnc base class, which implements the core streaming functionality. This base class is implemented by GstV4l2H264Enc class that implements the caps negotiation specific to H264 profiles and level. This implementation supports hardware with multiple H264 encoder. Though, to make it simplier to use, the first discovered H264 encoder will be named v4l2h264enc. Other encoder found during discovery will have a unique name like v4l2video0h264enc. This work is the combined work of multiple developpers in the last 3 years. Thanks to all of the contributors: Ayaka <ayaka@soulik.info> Frédéric Sureau <frederic.sureau@vodalys.com> Jean-Michel Hautbois <jean-michel.hautbois@veo-labs.com> Nicolas Dufresne <nicolas.dufresne@collabora.com> Pablo Anton <pablo.anton@vodalys-labs.com> https://bugzilla.gnome.org/show_bug.cgi?id=728438
87 lines
2.5 KiB
C
87 lines
2.5 KiB
C
/*
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* Copyright (C) 2014 SUMOMO Computer Association.
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* Author: ayaka <ayaka@soulik.info>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*
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*/
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#ifndef __GST_V4L2_VIDEO_ENC_H__
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#define __GST_V4L2_VIDEO_ENC_H__
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#include <gst/gst.h>
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#include <gst/video/video.h>
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#include <gst/video/gstvideoencoder.h>
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#include <gst/video/gstvideometa.h>
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#include <gstv4l2object.h>
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#include <gstv4l2bufferpool.h>
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GST_DEBUG_CATEGORY_EXTERN (v4l2videoenc_debug);
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G_BEGIN_DECLS
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#define GST_TYPE_V4L2_VIDEO_ENC \
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(gst_v4l2_video_enc_get_type())
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#define GST_V4L2_VIDEO_ENC(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_V4L2_VIDEO_ENC,GstV4l2VideoEnc))
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#define GST_V4L2_VIDEO_ENC_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_V4L2_VIDEO_ENC,GstV4l2VideoEncClass))
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#define GST_IS_V4L2_VIDEO_ENC(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_V4L2_VIDEO_ENC))
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#define GST_IS_V4L2_VIDEO_ENC_CLASS(obj) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_V4L2_VIDEO_ENC))
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typedef struct _GstV4l2VideoEnc GstV4l2VideoEnc;
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typedef struct _GstV4l2VideoEncClass GstV4l2VideoEncClass;
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struct _GstV4l2VideoEnc
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{
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GstVideoEncoder parent;
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/* < private > */
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GstV4l2Object *v4l2output;
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GstV4l2Object *v4l2capture;
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/* pads */
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GstCaps *probed_srccaps;
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GstCaps *probed_sinkcaps;
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/* State */
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GstVideoCodecState *input_state;
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gboolean active;
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gboolean processing;
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GstFlowReturn output_flow;
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};
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struct _GstV4l2VideoEncClass
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{
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GstVideoEncoderClass parent_class;
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gchar *default_device;
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GstFlowReturn (*get_output_caps) (GstVideoEncoder * encoder,
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GstCaps ** outcaps);
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};
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GType gst_v4l2_video_enc_get_type (void);
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gboolean gst_v4l2_video_enc_register (GstPlugin * plugin, GType type,
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const char *codec, const gchar * basename, const gchar * device_path,
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GstCaps * sink_caps, GstCaps *codec_caps, GstCaps * src_caps);
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G_END_DECLS
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#endif /* __GST_V4L2_VIDEO_ENC_H__ */
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